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Home My WebLink About17327 67th Ave NE_PWD1860_2026 (3) DRAINAGE REPORT Centennial Park 67th Ave and 172nd Street NE Arlington, WA 98223 07/30/19 CG Project No.: 18386.20 250 4th Ave S Ste 200 Edmonds, WA 98020 Phone: (425) 778-8500 Fax: (425) 778-5536 Table of Contents Section I â€“ Project Overview Section II â€“ Minimum Requirements Section III â€“ Off-Site Analysis Section IV â€“ Permanent Stormwater Control Plan Section V â€“ Construction Stormwater Pollution Prevention Section VI â€“ Special Reports and/or Studies Section VII â€“ Other Permits Section VIII â€“ Operation and Maintenance Manual Appendix A â€“ WWHM Reports 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section I, Page 1 Section I â€“ Project Overview Section I Summary Overview Existing Condition Developed Condition Vicinity Map Aerial Photograph Overview This project is the development of twelve buildings (mostly for apartments), along with associated driveways, parking, sidewalks, and common areas to an 8.81-acre site at the northeast corner of the 67th Ave and 172nd Street NE Arlington, WA 98223 (TPN: 31052300300800). The site is currently undeveloped, forested along its south and east sides and with a Category IV wetland is located at the northwest corner. There is also a potentially regulated stream on the south side of the site that cannot be altered until permanently declassified. The rest of the site is cleared. In the developed condition, most of the site will be cleared and regraded, excluding some areas near the northeastern corner where the existing wetland is located and the south side where the stream flows through. Two entrances will be off 67th and due to the channel at the south side of the site no entrances will be from 172nd. The project will comply with the 2014 Stormwater Management Manual for Western Washington (herein referred to as the SWMMWW). The project must comply with Minimum Requirements #1-9 of the SWMMWW and must also submit a Construction Stormwater General Permit to the Washington State Department of Ecology because land disturbance will be over an acre. The site is within the Mixed-Use NC-Neighborhood Commercial zone. Surrounding areas include RLMD- Low to Moderate Density Residential to the north and east, GI- General Industrial to the west, and GC- General Commercial to the southwest. The site is at the southern border of the City of Arlington. Existing Condition The site totals 8.81 ac and is currently undeveloped. It is forested along the south and east sides of the site and has a Category IV wetland is located at the northwest corner. There also is a stream at the south side that will not be altered until permanently declassified. The rest of the site is cleared. In general, the site slopes from east to west with slopes ranging from 2.5% at the west side of the site to 24% at the east side of the site. Most of the site is flat to moderate except for a steep slope near the east side of the site where there is a maximum slope of about 24%. Per the geotechnical report, the 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section I, Page 2 underlying soil underneath 1.5 to 3 feet of fill on the western side of the site is Alluvium/Marysville Sand a medium dense, brown, gravelly sand. On the eastern side of the site it is Advance Outwash a medium dense, to very dense, gravely sand. The soils correspond to hydrologic soil group â€œC.â€ Groundwater was visible in the test pits and borings done for the geotechnical report. In addition to the groundwater table, there is also several instances of perched groundwater nearer the surface. Developed Condition Most of the site will be developed with fifteen apartment and mixed-use buildings along with associated parking, and common areas both indoor and outdoor. Vegetation will be preserved along the perimeter for open space and for community garden space, and an open play area is proposed in the center of the development. The wetland and its buffer near the northeast corner of the site and the stream and its buffer near the south property line will not be disturbed Water and sewer mains will be extended into the development, and stormwater will be controlled on site and will overflow to the city infrastructure in 67th Ave NE. Two entrances will be off 67th Ave NE to the west. A 30â€™ ROW dedication is required for the portion of the site adjacent to 67th Ave NE. Street improvements include a new sidewalk and planter strip along 67th Ave NE. As the stream and its buffer are not being impacted no street improvements along 172nd are required. The site totals 6.214 ac in the proposed condition. The proposed lot coverage is as follows: Total Property: 383,609 sf (8.806 ac) Wetland and buffer(excluded): 39,816 sf (0.914 ac) Stream and buffer(excluded): 73,096 sf (1.678 ac) ROW area(included): 6,116 sf (0.140 ac) Pervious Area Landscaping, Flat, C: 83,860 sf (1.925 ac) Total: 83,860 sf (1.925 ac) Impervious Areas Parking, Flat: 79,578 sf (1.827 ac) Roof, Flat: 57,651 sf (1.323 ac) Walkway, Flat: 55,724 sf (1.279 ac) Total: 192,953 sf (4.430 ac) Total Project Site: 276,813 sf (6.355 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section I, Page 3 PROJECT SITE Figure I-1 Vicinity Map 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section I, Page 4 PROJECT SITE Figure I-2 Aerial Photograph 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section II, Page 1 Section II â€“ Minimum Requirements Section II Summary Narrative Stormwater requirements were determined from the 2014 SWMMWW. This report is based on the steps recommended in Chapter 3 of Volume I in the SWMMWW. The project will comply with Minimum Requirements #1-9. Minimum Requirement #1: Preparation of Stormwater Site Plans: The stormwater site plan consists of this report and the civil drawings and is prepared in accordance with Chapter 3 of Volume 1 of the SWMMWW. Minimum Requirement #2: Construction Stormwater Pollution Prevention Plan (SWPPP): The SWPPP shall include a narrative and drawings. The SWPPP narrative shall include documentation that addresses the 13 elements of Construction Stormwater Pollution Prevention. See Section V and the civil drawings. A Construction Stormwater General Permit must also be submitted to the Washington State Department of Ecology because land disturbance will be over an acre. Minimum Requirement #3: Source Control of Pollution: Source control BMPs during construction are described in Section IV. For this site we have looked at the pool for compliance with 2014 SWMMWW S433. Minimum Requirement #4: Preservation of Natural Drainage Systems and Outfalls: Natural drainage patterns shall be maintained, and discharges from the project site shall occur at the natural location, to the maximum extent practicable. The manner by which runoff is discharged from the project site must not cause a significant adverse impact to downstream receiving waters and down-gradient properties. All projects shall submit an off-site qualitative analysis. A qualitative analysis of the upstream and downstream system entering the site is presented in Section III. Minimum Requirement #5: On-Site Stormwater Management: Per Table 2.5.1 from the SWMMWW, new development projects on any parcel inside the Urban Growth Area that trigger Minimum Requirements #1 through #9 must demonstrate compliance with the Low Impact Development Performance Standard and BMP T5.13; or use On-Site Stormwater Management BMPs from List #2. The project proposes to meet the Low Impact Development Standard using gravel infiltration trenches and BMP T5.13. See Section IV. Minimum Requirement #6: Runoff Treatment: This requirement applies to the new plus replaced hard surfaces and the converted vegetation areas. Runoff treatment is required because the project adds more than 5,000 sf of pollution-generating hard surface. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section II, Page 2 Minimum Requirement #7: Flow Control: Projects must provide flow control to reduce the impacts of stormwater runoff from hard surfaces and land cover conversions. The project will meet the flow control duration standard using gravel infiltration trenches designed to infiltrate 100% of site runoff. See Section IV. Minimum Requirement #8: Wetlands Protection: This requirement applies only to projects whose stormwater discharges into a wetland, either directly or indirectly through a conveyance system. Stormwater from the site does not discharge into a wetland and therefore this requirement is not applicable. The Category IV wetland on the north is not anticipated to be the discharge location of the existing site due to the existing layout of the site topography. The existing inflow via a swale along the north property line will be maintained. Minimum Requirement #9: Operation and Maintenance: An Operation and Maintenance Manual that is consistent with the provisions in Volume V of the SWMMWW is required for proposed Stormwater Treatment and Flow Control BMPs/facilities. The party (or parties) responsible for maintenance and operation shall be identified in the operation and maintenance manual. For private facilities, a copy of the Operation and Maintenance Manual shall be retained on-site or within reasonable access to the site and shall be transferred with the property to the new owner. For public facilities, a copy of the operation and maintenance manual shall be retained in the appropriate department. A log of maintenance activity that indicates what actions were taken shall be kept and be available for inspection. Please see Section VIII. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section III, Page 1 Section III â€“ Off-Site Analysis Section III Summary Task 1 â€“ Define and map the study area Task 2 â€“ Review all available information of the study area Task 3 â€“ Field inspect the area Task 4 - Describe the drainage system, and its existing and predicted problems Task 1 â€“ Define and map the study area Development projects that discharge stormwater off-site shall submit an off-site analysis report that assesses the potential off-site water quality, erosion, slope stability, and drainage impacts associated with the project and that proposes appropriate mitigation of those impacts. An initial qualitative analysis shall extend downstream for the entire flow path from the project site to the receiving water or up to one mile, whichever is less. Nearly all runoff from developed areas will be directed to infiltration trenches designed to infiltrate 100% of contributing runoff. The infiltration trenches are designed with the overflow discharge pipes from the trenches connecting to city infrastructure in 67th Ave NE. The overflow paths will be studied in this section. City Infrastructure OVERFLOW CATCH BASIN INFILTRATION ONSITE EDGECOMB CREEK (MIDDLE FORK OF QUILCEDA CREEK) Figure III-1 Study Area from Stormwater Infrastructure Map of City of Arlington. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section III, Page 2 Figure III- 1 depicts the downstream flow path from the site. Existing drainage in 67th Ave flows north and outfalls into a bioretention pond on the west side of the street. From there through a ditch and culvert system and a piped system the stormwater outfalls into the Edgecomb Creek/Middle Fork Quilceda Creek which outfalls into the Possession Sound (Puget Sound) Task 2 â€“ Review all available information on the study area The project site is currently cleared but does not contain any stormwater improvements. A wetland at the northeast corner will not be impacted by the construction activity. Existing stormwater infrastructure in the adjacent streets was determined from the survey and the Cityâ€™s online maps. The site is within the Edgecomb Creek/Quilceda Creek drainage basin which outlets to the Possession Sound. The north side 172nd Street NE (SR 531) flows into ditch system on the south side of the subject property, and the south side flows into Edgecomb Creek. Edgecomb Creek used to cross SR 531 from south to north in a 36-inch culvert, where it would then flow through the subject property before crossing back under SR 531 again in a 60-inch culvert back to the south side of the road. WSDOT Job Number 16A032 realigned this Creek to be entirely on the south side of the right of way. As part of this work, the 36-inch pipe was abandoned. The 60-inch culvert remains in place. As built drawings from that project are provided in this report. See Figures III-2 and III-3. There are catch basins and conveyance pipes in 67th Ave NE which discharge to the north into stormwater ponds which overflow to the southwest into Edgecombe Creek (Figure III-4). According to the wetland report in Section VI the wetland at the northeast corner of the site is a Type IV wetland. The wetland will not be impacted during construction, and its buffer will only be impacted as allowed by the wetland report by Soundview Consultants. Task 3 â€“ Field inspect the study area A site visit was conducted on May 29, 2019. Weather was warm and rain had not recently occurred. The area reviewed was the site (with emphasis on the onsite ditch that was previously a portion of Edgecomb Creek), SR 531, 67th, and several nearby drainage areas and culverts. The on-site ditch takes flows from the north side of SR 531 for roughly four thousand feet upstream of the project. These entire the site via a ditch system from the Atonement Free Lutheran Church. The Edgecomb Creek basin no longer flows through the site, so on the ditch was mostly dry, other than some puddled areas following the various log drops within the bottom of the channel. For the current project, the ditch system is expected to remain, with a 150â€™ buffer, and will continue to convey along the same upstream flows. Flows have been preliminarily quantified to evaluate the upstream drainage entering and exiting the site. Running the upstream calculations using the SBUH method in HydroCAD, the upstream flows through the stream are as follows: 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section III, Page 3 2 Year Peak Flow: 12.32 cfs 25 Year Peak Flow: 26.63 cfs 100 Year Peak Flow: 33.79 cfs Calculations are included within this section of the report, but for the current proposed project, we have considered this area to be undisturbed, bypassing through the site. The area of development on the site is generally the portion of the property which flows westerly toward 67th Ave NE. The infiltration trenches on site are being designed to infiltrate 100% of contributing runoff, with the street improvements and small portions of the site driveways bypassing directly into the storm system, at a level meeting flow control standards. Task 4 â€“ Describe the drainage system, and its existing and predicted problems The drainage system is described in Task 2. Further site visits may be necessary and will be done for the future full engineering submittal to determine if there are any existing drainage problems. As the main contributing upstream flows will remain undisturbed by the development, and much of the existing site is being infiltrated, downstream drainage problems are not anticipated. Figure III-2 Upstream flows entering site from SR 531 roadside ditch 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section III, Page 4 Figure III-3 On-site ditch (formally Edgecomb Creek route) Figure III-4 Looking north on 67th. Trees on left side of picture border off site pond/bioretention 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section III, Page 5 Figure III-5 Edgecomb Creek now flow on south side of SR 531 without crossing. Shown here crossing under 67th, south of intersection. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section IV, Page 1 Section IV â€“ Permanent Stormwater Control Plan Section IV Summary On-Site Stormwater Management Runoff Treatment Flow Control Source Control On-Site Stormwater Management The project must meet Minimum Requirement #5. Per Table 2.5.1 from the SWMMWW, new development projects on any parcel inside the Urban Growth Area that trigger Minimum Requirements #1 through #9 must either: 1. Use On-Site Stormwater Management BMPs from List #2 for all surfaces within each type of surface in List #2; or 2. Demonstrate compliance with the LID Performance Standard and BMP T5.13. The project proposes to meet the LID Performance Standard and BMP T5.13. Infiltration was only found to be feasible by raising the site above the groundwater and using shallow trenches. All hard surfaces will be routed to infiltration trenches on-site. Because the site was raised, an appropriate fill material for underneath the proposed infiltration beds was selected. The infiltration rate used for design was 0.94 in/hr per the recommendations in the geotechnical report. This rate will need to be field verified as construction occurs. WWHM2012 was used to determine the total amount of gravel infiltration trench required to infiltrate 100% of the runoff created by on-site impervious areas. Only areas of disturbance on-site and within the right- of-way are included in this design. That being said, we have run the areas of these improvements versus the historic condition of the site and verified that by providing 100% infiltration of the site that these remaining areas can be simply connected to the storm drainage without flow control being needed. The total trench area outputted in the WWHM report of 37,000 sf was divided into 14 trenches as shown on the construction plans. The trenches are designed with a total surface area of 37,950 sf. Catch basins, area drains, roof drains and the pool drain all connect to the infiltration trenches for on- site stormwater management. The trenches infiltrate 100% of the runoff and on overflow is provided conveying the stormwater west off-site. The predeveloped (forested) and developed land cover used in the WWHM model is as follows (excluding wetland area and the stream area, as well as their buffers). The right of way area and a 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section IV, Page 2 portion of the site is shown as a separate basin which bypasses the infiltration trench but still passes for flow control at the point of compliance. See Appendix A for more detail within the WHHM report. Predeveloped: Pervious Areas Forested, Flat, C: 1999,108 sf (4.571 ac) Forested, Moderate, C: 20,021 sf (0.460ac) Forested, Steep, C: 57,684 sf (1.324 ac) Total: 276,813 sf (6.355 ac) Developed Project Site- To Infiltration Trench Pervious Area Landscaping, Flat, C: 72,970 sf (1.675 ac) Total: 72,970 sf (1.675 ac) Impervious Areas Parking, Flat: 79,578 sf (1.827 ac) Roof, Flat: 57,651 sf (1.323 ac) Walkway, Flat: 34,380 sf (0.789 ac) Total: 171,609 sf (3.939 ac) Total Area to Infiltration Trench: 244,579 sf (5.615 ac) Developed Project Site- Bypass Pervious Area Landscaping, Flat, C: 10,890 sf (0.250ac) Total: 10,890 sf (0.250ac) Impervious Areas Walkway, Flat: 21,344 sf (0.490 ac) Total: 21,344 sf (0.490 ac) Total Bypass Area: 32,234 sf (0.740 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section IV, Page 3 Flow Control The infiltration trenches were sized in WWHM to infiltrate 100% and will therefore be used to meet the Flow Control Duration Standard for Minimum Requirement #7. Please see the WWHM report in Appendix A for both basins. Runoff Treatment Runoff treatment is required for pollution-generating hard surfaces (PGHS). Per Chapter 2.1 of Volume V of the SWMMWW, enhanced treatment is required since the project is a multi-family residential project that discharges directly to fresh waters or conveyance systems tributary to fresh waters designed for aquatic life use. According to the geotechnical report attached in Section VI the surface soil is suitable for on-site pollutant treatment. This soil will not be used in design however, as the perched groundwater could be present. The fill selected for areas underlying treatment areas has the appropriate cation exchange capacity to treat the stormwater. Oil water separator fittings per City details are included in upstream catch basins collecting pollution generating impervious surfaces to provide pretreatment prior to discharge into the trenches. Source Control The pool is required to go into the stormwater system and must meet the requirements of S433: BMPs for Pools, Spas, Hot Tubs and Fountains in the SWMMWW. Many of the requirements in this Source Control standard are regarding standard maintenance of the pool such as cleaning, monitoring chemical & pH levels, etc. The civil engineering design requirements are as follows: Discharge to the ground must comply with Ecologyâ€™s Ground Water Standards, Chapter 173-200 WAC o The project routes runoff from impervious surfaces, including the pool to infiltration trenches, so this requirement applies. This section of the WAC allows for 250 ppm (parts per million) of chlorides, while the proposed pool will only be dosed at 2 ppm, well below the maximum. Pollutant Control o It is not typically recommended that pools be drained, but were this to be needed, the City of Arlington does not allow connections into the sanitary sewer. It is expected that if the pool is drained, it will not be during rain events, and that the water can be conveyed to the on-site stormwater system, where it will infiltrate within the requirements of Chapter 173-200 WAC mentioned above. The infiltration system stubs to the infiltration system, which has significantly more volume than the pool. It will infiltrate prior to discharge to the storm system. Discharges to Storm System o It is not expected that pool will get past the onsite stormwater management facilities and into the City storm drains. The requirement is 0.1 ppm, but it is our expectation that it will all be infiltrated on site per the discussions in the previous two bullet points. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section IV, Page 4 Permanent Links to Storm System o The pool is not supposed to be permanently connected to storm. The pool facilities will not be, other than trench drains spaced 5 feet off their perimeters. These will capture mostly rain, but also splashes, pool water dripping off of people, etc. If the entire pool needs to be drained to the storm, it should be done with a hose or sump pump. For the more typical civil engineering calculations, such as flow control, the amenity area including the pool, hot tub and splash pad have simply been modeled as impervious surface. Many other items will be noted for the pool permit, including typical operations, information about the chemical storage, sludge disposal, etc., but those are not with the permit requirements for the site development. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section V, Page 1 Section V â€“ Construction Stormwater Pollution Prevention Section V Summary Narrative Calculations Erosion control details are provided consistent with the 2014 DOE Manual. Erosion control plan sheets are provided in full size as a part of the civil drawing set. A Construction Stormwater General Permit (CSGP) is required through the Department of Ecology because land disturbing activities total over one acre. This will be performed roughly on the same timeline as full engineering submittals to the City of Arlington. A summary of the elements is provided below. Element 1: Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land-disturbing activities begin. Clearing limits will be to the extents of necessary land disturbance. The BMPs relevant to marking the clearing limits that will be applied for this project include: High Visibility Plastic or Metal Fence (BMP C103) Element 2: Establish Construction Access Construction access or activities occurring on unpaved areas shall be minimized, yet where necessary, access points shall be stabilized to minimize the tracking of sediment onto public roads. Stabilized construction entrances will be added on the west and east south of the site at the locations of the proposed entrances to the apartment complex. This will help to prevent sediment tracking into the right of way. Stabilized Construction Entrance (BMP C105) Element 3: Control Flow Rates Stormwater will be directed to a temporary sediment pond at the northwest corner of the site, and flow rates will be controlled per the BMPs listed below. The construction of the temporary sediment pond must be done as one of the first steps in grading. Stormwater should not be directed to infiltration facilities until the site has been stabilized. Protect Low Impact Development BMPs from compaction and sedimentation per Element 13. Temporary Sediment Pond (BMP C241) Check Dams (C207) Silt Fence (BMP C233) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section V, Page 2 Element 4: Install Sediment Controls Stormwater must be filtered prior to being discharged to an infiltration system or leaving the construction site. A silt fence will be installed around the entire perimeter of the site. A temporary sediment pond will be installed at the northwest corner of the site where some sediment will be able to settle out prior to discharge to the public storm system. If sediment controls are ineffective and turbid water is observed discharging from the site, additional energy dissipation BMPs and sediment control BMPs should be installed such as wattles. It may also be necessary to stabilize soils per Element 5 that are not being worked on. The specific BMPs to be used for controlling sediment on this project include: Silt Fence (BMP C233) Temporary Sediment Pond (BMP C241) Wattles (BMP C235) Element 5: Stabilize Soils Exposed and unworked soils shall be stabilized with the application of effective BMPs to prevent erosion throughout the life of the project. The specific BMPs for soil stabilization that shall be used on this project include: Temporary and Permanent Seeding (BMP C120) Mulching (BMP C121) Nets and Blankets (BMP C122) Plastic Covering (BMP C123) Sodding (BMP C124) Topsoiling/Composting (BMP C125) Surface Roughening (BMP C130) Dust Control (BMP C140) Element 6: Protect Slopes Exposed slopes shall be stabilized with BMPs found in Element 5. Element 7: Protect Drain Inlets Drain inlets near the site and those made operable on-site will be protected from sedimentation. Stormwater shall not enter the conveyance system without first being filtered or treated to remove sediment. Inlet protection devices shall be cleaned or removed and replaced when sediment has filled one-third of the available storage (or as specified by the manufacturer). The specific BMPs to be used for protecting drain inlets are: Storm Drain Inlet Protection (BMP C220) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section V, Page 3 Element 8: Stabilize Channels and Outlets All temporary on-site conveyance channels shall be designed, constructed, and stabilized to prevent erosion during construction. The specific BMPs to be used for are: Channel Lining (BMP C202) Check Dams (BMP C207) Outlet Protection (BMP C209) Element 9: Control Pollutants Design, install, implement and maintain effective pollution prevention measures to minimize the discharge of pollutants. The suggested BMPs are: Concrete Handling (BMP C151) Sawcutting and Surfacing Pollution Prevention (BMP C152) Material Delivery, Storage and Containment (BMP C153) Element 10: Control Dewatering De-watering is not anticipated. Element 11: Maintain BMPs All temporary and permanent erosion and sediment control BMPs shall be maintained and repaired as needed to ensure continued performance of their intended function. Element 12: Manage the Project â€¢ Phase development projects to the maximum degree practicable and consider seasonal work limits. â€¢ Inspection and monitoring â€“ Inspect, maintain, and repair all BMPs as needed to assure continued performance of their intended function. Conduct site inspections and monitoring in accordance with the Construction Stormwater General Permit or local plan approval authority. â€¢ Maintain an Updated Construction SWPPP - This SWPPP shall be retained on-site or within reasonable access to the site. - The SWPPP shall be modified whenever there is a change in the design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the state. - The SWPPP shall be modified if, during inspections or investigations conducted by the owner/operator, or the applicable local or state regulatory authority, it is determined that the SWPPP is ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. The SWPPP shall be modified as necessary to include additional or modified BMPs designed to correct problems identified. Revisions to the SWPPP shall be completed within seven (7) days following the inspection. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section V, Page 4 Element 13: Protect Low Impact Development BMPs Gravel infiltration trenches are proposed throughout the site. All heavy equipment should be kept off infiltration facilities that have been excavated to final grade to retain the infiltration rate of the soil. The proposed trenches shall be protected from compaction during construction with orange protective fencing. Calculations Figure V-1 Sediment Pond Sizing 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Construction Stormwater General Permit Stormwater Pollution Prevention Plan (SWPPP) for Centennial Park Prepared for: The Washington State Department of Ecology Northwest Regional Office Permittee / Owner Developer Operator / Contractor Williams Investments Williams Investments Exxel Pacific 67th Ave and 172nd Street NE, Arlington, WA 98223 Certified Erosion and Sediment Control Lead (CESCL) Name Organization Contact Phone Number Joshua Taylor Taylor Excavating 360.629.3078 SWPPP Prepared By Name Organization Contact Phone Number Darina Litushko CG Engineering 425.778.8500 SWPPP Preparation Date July 2019 Project Construction Dates Activity / Phase Start Date End Date Construction August 2019 December 2020 Table of Contents 1 Project Information .............................................................................................................. 4 1.1 Existing Conditions ...................................................................................................... 4 1.2 Proposed Construction Activities .................................................................................. 5 2 Construction Stormwater Best Management Practices (BMPs) ........................................... 6 2.1 The 13 Elements .......................................................................................................... 6 2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits ........................................ 6 2.1.2 Element 2: Establish Construction Access ............................................................ 7 2.1.3 Element 3: Control Flow Rates ............................................................................. 8 2.1.4 Element 4: Install Sediment Controls .................................................................... 9 2.1.5 Element 5: Stabilize Soils ....................................................................................10 2.1.6 Element 6: Protect Slopes....................................................................................11 2.1.7 Element 7: Protect Drain Inlets ............................................................................12 2.1.8 Element 8: Stabilize Channels and Outlets ..........................................................13 2.1.9 Element 9: Control Pollutants ...............................................................................14 2.1.10 Element 10: Control Dewatering ..........................................................................16 2.1.11 Element 11: Maintain BMPs .................................................................................17 2.1.12 Element 12: Manage the Project ..........................................................................18 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs .................................21 3 Pollution Prevention Team .................................................................................................22 4 Monitoring and Sampling Requirements ............................................................................23 4.1 Site Inspection ............................................................................................................23 4.2 Stormwater Quality Sampling ......................................................................................23 4.2.1 Turbidity Sampling ...............................................................................................23 4.2.2 pH Sampling ........................................................................................................25 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies .........................26 5.1 303(d) Listed Waterbodies ..........................................................................................26 5.2 TMDL Waterbodies .....................................................................................................26 6 Reporting and Record Keeping ..........................................................................................27 6.1 Record Keeping ..........................................................................................................27 6.1.1 Site Log Book ......................................................................................................27 6.1.2 Records Retention ...............................................................................................27 6.1.3 Updating the SWPPP ...........................................................................................27 6.2 Reporting ....................................................................................................................28 6.2.1 Discharge Monitoring Reports ..............................................................................28 6.2.2 Notification of Noncompliance ..............................................................................28 P a g e | 1 List of Tables Table 1 â€“ Summary of Site Pollutant Constituents ..................................................................... 4 Table 2 â€“ Pollutants ..................................................................................................................14 Table 3 â€“ pH-Modifying Sources ...............................................................................................14 Table 4 â€“ Dewatering BMPs ......................................................................................................16 Table 5 â€“ Management .............................................................................................................18 Table 6 â€“ BMP Implementation Schedule .................................................................................19 Table 7 â€“ Team Information ......................................................................................................22 Table 8 â€“ Turbidity Sampling Method ........................................................................................23 Table 9 â€“ pH Sampling Method .................................................................................................25 List of Appendices Appendix/Glossary A. Site Map B. BMP Detail C. Correspondence D. Site Inspection Form E. Construction Stormwater General Permit (CSWGP) F. 303(d) List Waterbodies / TMDL Waterbodies Information G. Contaminated Site Information H. Engineering Calculations P a g e | 2 List of Acronyms and Abbreviations Acronym / Abbreviation Explanation 303(d) Section of the Clean Water Act pertaining to Impaired Waterbodies BFO Bellingham Field Office of the Department of Ecology BMP(s) Best Management Practice(s) CESCL Certified Erosion and Sediment Control Lead CO2 Carbon Dioxide CRO Central Regional Office of the Department of Ecology CSWGP Construction Stormwater General Permit CWA Clean Water Act DMR Discharge Monitoring Report DO Dissolved Oxygen Ecology Washington State Department of Ecology EPA United States Environmental Protection Agency ERO Eastern Regional Office of the Department of Ecology ERTS Environmental Report Tracking System ESC Erosion and Sediment Control GULD General Use Level Designation NPDES National Pollutant Discharge Elimination System NTU Nephelometric Turbidity Units NWRO Northwest Regional Office of the Department of Ecology pH Power of Hydrogen RCW Revised Code of Washington SPCC Spill Prevention, Control, and Countermeasure su Standard Units SWMMEW Stormwater Management Manual for Eastern Washington SWMMWW Stormwater Management Manual for Western Washington SWPPP Stormwater Pollution Prevention Plan TESC Temporary Erosion and Sediment Control SWRO Southwest Regional Office of the Department of Ecology TMDL Total Maximum Daily Load VFO Vancouver Field Office of the Department of Ecology WAC Washington Administrative Code WSDOT Washington Department of Transportation WWHM Western Washington Hydrology Model P a g e | 3 1 Project Information Project/Site Name: Centennial Park Street/Location: 18506 Smokey Point Blvd. City: Arlington State: WA Zip code: 98223 Subdivision: N/A Receiving waterbody: Creek 1.1 Existing Conditions Total acreage (including support activities such as off-site equipment staging yards, material storage areas, borrow areas). Total acreage: 8.81 ac Disturbed acreage: 6.36 ac Existing structures: 0 ac Landscape 0 ac Drainage patterns: The site generally slopes downward from the E to the W. Grades are moderate to steep on the east side of the property and mostly flat otherwise. Existing Bushes, shrubs, grass, wetland, trees Vegetation: Critical Areas (wetlands, streams, high Slopes on east property line, Relict erosion risk, steep or difficult to stabilize Stream Channel, Category IV Wetland slopes): List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL) for the receiving waterbody: Edgecomb Creek is not listed as having impairments on the EPA website.. Table 1 includes a list of suspected and/or known contaminants associated with the construction activity. No known or suspected contaminants are associated with the site. Table 1 â€“ Summary of Site Pollutant Constituents Constituent Location Depth Concentration (Pollutant) P a g e | 4 1.2 Proposed Construction Activities Description of site development (example: subdivision): Multi-family residential. The project will add 15 buildings. These include one mixed use building, two common buildings, and 12 apartment buildings. Description of construction activities (example: site preparation, demolition, excavation): Clearing and grubbing of existing forested and brushed areas; excavating, filling, and grading; utility installation, parking lot surfacing, building construction and frontage improvements. Description of site drainage including flow from and onto adjacent properties. Must be consistent with Site Map in Appendix A: The site generally slopes downward from the east to the west and drainage in the developed condition is expected to flow in the same direction. Description of final stabilization (example: extent of revegetation, paving, landscaping): Buildings, parking lots and driveways will cover about 50% of the site, with approximately 20% of the site being landscaping and the remaining 30% being encombered by critical areas (Category IV wetland and stream). Contaminated Site Information: Proposed activities regarding contaminated soils or groundwater (example: on-site treatment system, authorized sanitary sewer discharge): N/A P a g e | 5 2 Construction Stormwater Best Management Practices (BMPs) The SWPPP is a living document reflecting current conditions and changes throughout the life of the project. These changes may be informal (i.e., hand-written notes and deletions). Update the SWPPP when the CESCL has noted a deficiency in BMPs or deviation from original design. 2.1 The 13 Elements 2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land-disturbing activities begin. Trees that are to be preserved, as well as all sensitive areas and their buffers, shall be clearly delineated in the field. In general, natural vegetation and native topsoil shall be retained in an undisturbed state to the maximum extent possible. A protective barrier shall be placed aound the protected trees prior to land preparation or construction activities, and shall remain in place until all construction activity is terminated. No equipment, chemicals, soil deposits or construction materials shall be placed within the protective barriers. Any landscaping activities subsequent to the removal of the barriers shall be accomplished with light machinery or hand labor. High Visibility Fence will be placed around the entire site running along the property lines. List and describe BMPs: â€¢ BMP C101: Preserving Natural Vegetation â€¢ BMP C102: Buffer Zones â€¢ BMP C103: High Visibility Plastic or Metal Fence â€¢ BMP C233: Silt Fence Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. P a g e | 6 2.1.2 Element 2: Establish Construction Access Limit vehicle access to one route, if possible. Construction access or activities occurring on unpaved areas shall be minimized, yet where necessary, access points shall be stabilized to minimize the tracking of sediment onto public roads.Street sweeping, street cleaning, or wheel wash/tire baths may be necessary if the stabilized construction access is not effective. If sediment is tracked off site, clean the affected roadway thoroughly at the end of each day, or more necessary as needed. All wheel wash wastewater shall be controlled on-site and CANNOT be discharged into waters of the State. Stabilized construction entrances will be added along the west edges of the site at the locations of the proposed entrances to the complex. This will help to prevent sediment tracking into the right of way. List and describe BMPs: â€¢ BMP C105: Stabilized Construction Entrance/Exit â€¢ BMP C107: Construction Road/Parking Area Stabilization Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. P a g e | 7 2.1.3 Element 3: Control Flow Rates The project site has a gentle slope from east to west for most of the site (<2%). There is a moderate slope near the west side of the site (12%). Stormwater will be directed to a temporary detention pond at the northwest corner of the site, and flow rates will be controlled per the BMPs listed below. The construction of the temporary sediment pond must be done as one of the first steps in grading. Infitration facilities will be constructed for permanent stormwater control. Stormwater should not be directed to these facilities until the site has been stabilized. Protect Low Impact Development BMPs from compaction and sedimentation per Element 13. Flow rates around the rest of the site will be controlled by the silt fence that will be placed around the entire site. Will you construct stormwater retention and/or detention facilities? Yes No Will you use permanent infiltration ponds or other low impact development (example: rain gardens, bio-retention, porous pavement) to control flow during construction? Yes No List and describe BMPs: â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection â€¢ BMP C241: Temporary Sediment Pond Installation Schedules: Install BMPs prior to grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. P a g e | 8 2.1.4 Element 4: Install Sediment Controls Stormwater must be filtered prior to being discharged to an infiltration system or leaving the construction site. Sediment control BMPs will be installed as one of the first steps of grading. These BMPs must be functional before other land-disturbing activities, especially grading and filling, take place. A silt fence will be installed around the perimeter of the developed site areas. A temporary sediment pond will be installed at the northwest corner of the site where some sediment will be able to settle out prior to discharge to the public storm system. If sediment controls are ineffective and turbid water is observed discharging from the site, additional energy dissipation BMPs and sediment control BMPs should be installed such as wattles. It may also be necessary to stabilize soils per Element 5 that are not being worked on. List and describe BMPs: â€¢ BMP C233: Silt Fence â€¢ BMP C235: Wattles â€¢ BMP C241: Temporary Sediment Pond Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: Repair sediment controls as needed. Remove sediment from pond as needed. Responsible Staff: CESCL. P a g e | 9 2.1.5 Element 5: Stabilize Soils Stabilize exposed and unworked soils by the BMPs listed below to prevent erosion. Protect stockpiles with plastic covering or other approved sediment trapping measures. Stabilize exposed soils with Temporary and Permanent Seeding, Mulching, Sodding, Topsoiling/Compost, or Surface Roughening. Minimize soil compaction by applying gravel base early on areas to be paved. The ESC Supervisor shall be familiar with BMPs for soil stabilization and dust control and implement these BMPs where needed on the proposed site. West of the Cascade Mountains Crest Number of Days Soils Can Season Dates be Left Exposed During the Dry Season May 1 â€“ September 30 7 days During the Wet Season October 1 â€“ April 30 2 days Soils must be stabilized at the end of the shift before a holiday or weekend if needed based on the weather forecast. Anticipated project dates: Start date: August 2019 End date: December 2020 Will you construct during the wet season? Yes No List and describe BMPs: â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C125: Topsoiling/Composting â€¢ BMP C130: Surface Roughening â€¢ BMP C131: Gradient Terraces â€¢ BMP C140: Dust Control Installation Schedules: As needed as soil is exposed. Inspection and Maintenance plan: End of the shift before a holiday or weekend and prior to forecasted rain events. Responsible Staff: CESCL. P a g e | 10 2.1.6 Element 6: Protect Slopes All cut and fill slopes will be designed, constructed, and protected in a manner that minimizes erosion. The interceptor swale and check dams will be located along the west side of the site as needed. Will steep slopes be present at the site during construction? Yes No (temporary excavations may create brief temporary slopes during wall construction) List and describe BMPs: â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C130: Surface Roughening â€¢ BMP C200: Interceptor Dike and Swale â€¢ BMP C201: Grass-Lined Channels â€¢ BMP C207: Check Dams Installation Schedules: Install BMPs prior to grading and as needed to minimize erosion. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. P a g e | 11 2.1.7 Element 7: Protect Drain Inlets All storm drain inlets and culverts made operable during construction shall be protected to prevent unfiltered or untreated water from entering the drainage conveyance system. However, the first priority is to keep all access roads clean of sediment and keep street wash water separate from entering storm drains until treatment can be provided. Storm Drain Inlet Protection will be implemented for all drainage inlets and culverts that could potentially be impacted by sediment-laden runoff on and near the project site. Inlet protection should be provided as shown on the C2.1 Plan. Inlet protection devices will be cleaned (or removed and replaced), when sediment has filled the device by one third (1/3) or as specified by the manufacturer. List and describe BMPs: â€¢ BMP C220: Storm Drain Inlet Protection Installation Schedules: Before land disturbance for existing catch basins and as new catch basins are made operable. Inspection and Maintenance plan: Inlets will be inspected weekly at a minimum and daily during storm events. Responsible Staff: CESCL. P a g e | 12 2.1.8 Element 8: Stabilize Channels and Outlets Where site runoff is to be conveyed in channels, or discharged to a stream or some other natural drainage point, efforts will be taken to prevent downstream erosion. The project site is located west of the Cascade Mountain Crest. As such, all temporary on-site conveyance channels shall be designed, constructed, and stabilized to prevent erosion from the expected peak 10 minute velocity of flow from a Type 1A, 10-year, 24-hour recurrence interval storm for the developed condition. Alternatively, the 10-year, 1-hour peak flow rate indicated by an approved continuous runoff simulation model, increased by a factor of 1.6, shall be used. Provide stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes, and downstream reaches, will be installed at the outlets of all conveyance systems. List and describe BMPs: â€¢ BMP C202: Channel Lining â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection Installation Schedules: Install BMPs prior to grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. P a g e | 13 2.1.9 Element 9: Control Pollutants The following pollutants are anticipated to be present on-site: Table 2 â€“ Pollutants Pollutant (List pollutants and source, if applicable) Concrete Concrete process water Concrete slurry Asphalt materials Utility Materials List and describe BMPs: â€¢ BMP C151: Concrete Handling â€¢ BMP C152: Sawcutting and Surfacing Pollution Prevention â€¢ BMP C153: Material Delivery, Storage and Containment Installation Schedules: As needed as pollutant source materials are used on-site. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. Will maintenance, fueling, and/or repair of heavy equipment and vehicles occur on-site? Yes No Will wheel wash or tire bath system BMPs be used during construction? Yes No Will pH-modifying sources be present on-site? Yes No Table 3 â€“ pH-Modifying Sources None Bulk cement Cement kiln dust Fly ash Other cementitious materials New concrete washing or curing waters Waste streams generated from concrete grinding and sawing Exposed aggregate processes Dewatering concrete vaults Concrete pumping and mixer washout waters P a g e | 14 Recycled concrete Recycled concrete stockpiles Other (i.e., calcium lignosulfate) [please describe: ] Concrete trucks must not be washed out onto the ground, or into storm drains, open ditches, streets, or streams. Excess concrete must not be dumped on-site, except in designated concrete washout areas with appropriate BMPs installed. Will uncontaminated water from water-only based shaft drilling for construction of building, road, and bridge foundations be infiltrated provided the wastewater is managed in a way that prohibits discharge to surface waters? Yes No P a g e | 15 2.1.10 Element 10: Control Dewatering Dewatering is not anticipated to be associated with this construction project. Most excavations are intended to occur in the dry seasons above the groundwater table, although several instances of â€œperchedâ€ groundwater were found in the geotechnical test pits. If necessary, only clean, non-turbid dewatering water (such as well-point groundwater) may be discharged to systems tributary to, or directly into, surface waters of the State, provided the dewatering flow does not cause erosion or flooding of receiving waters. Table 4 â€“ Dewatering BMPs Infiltration Transport off-site in a vehicle (vacuum truck for legal disposal) Ecology-approved on-site chemical treatment or other suitable treatment technologies Sanitary or combined sewer discharge with local sewer district approval (last resort) Use of sedimentation bag with discharge to ditch or swale (small volumes of localized dewatering) List and describe BMPs: N/A. Installation Schedules: N/A. Inspection and Maintenance plan: N/A. Responsible Staff: CESCL. P a g e | 16 2.1.11 Element 11: Maintain BMPs All temporary and permanent Erosion and Sediment Control (ESC) BMPs shall be maintained and repaired as needed to ensure continued performance of their intended function. Maintenance and repair shall be conducted in accordance with each particular BMP specification (see Volume II of the SWMMWW or Chapter 7 of the SWMMEW). Visual monitoring of all BMPs installed at the site will be conducted at least once every calendar week and within 24 hours of any stormwater or non-stormwater discharge from the site. If the site becomes inactive and is temporarily stabilized, the inspection frequency may be reduced to once every calendar month. All temporary ESC BMPs shall be removed within 30 days after final site stabilization is achieved or after the temporary BMPs are no longer needed. Trapped sediment shall be stabilized on-site or removed. Disturbed soil resulting from removal of either BMPs or vegetation shall be permanently stabilized. Additionally, protection must be provided for all BMPs installed for the permanent control of stormwater from sediment and compaction. BMPs that are to remain in place following completion of construction shall be examined and restored to full operating condition. If sediment enters these BMPs during construction, the sediment shall be removed and the facility shall be returned to conditions specified in the construction documents. P a g e | 17 2.1.12 Element 12: Manage the Project The project will be managed based on the following principles: â€¢ Projects will be phased to the maximum extent practicable and seasonal work limitations will be taken into account. â€¢ Inspection and monitoring: o Inspection, maintenance and repair of all BMPs will occur as needed to ensure performance of their intended function. o Site inspections and monitoring will be conducted in accordance with Special Condition S4 of the CSWGP. Sampling locations are indicated on the Site Map. Sampling station(s) are located in accordance with applicable requirements of the CSWGP. â€¢ Maintain an updated SWPPP. o The SWPPP will be updated, maintained, and implemented in accordance with Special Conditions S3, S4, and S9 of the CSWGP. As site work progresses the SWPPP will be modified routinely to reflect changing site conditions. The SWPPP will be reviewed monthly to ensure the content is current. Table 5 â€“ Management Design the project to fit the existing topography, soils, and drainage patterns Emphasize erosion control rather than sediment control Minimize the extent and duration of the area exposed Keep runoff velocities low Retain sediment on-site Thoroughly monitor site and maintain all ESC measures Schedule major earthwork during the dry season Other (please describe) P a g e | 18 Table 6 â€“ BMP Implementation Schedule In general it is expected that most early grading will occur in the dry season of 2019 and be picked up again in dry season of 2020. Phase of Construction Wet/Dry Stormwater BMPs Date Project Season Pre-construction Preserving Natural Vegetation 8/19/2019 Dry (BMP C101) Pre-construction High Visibility Fence (BMP C103) 8/21/2019 Dry Pre-construction Silt Fence (BMP C233) 8/21/2019 Dry Land disturbance Stabilized Construction 8/23/2019 Dry Entrance/Exit (BMP C105) Land disturbance Sediment Trap (BMP C240) NA Dry Land disturbance Temporary Sediment Pond (BMP 8/26/2019 Dry C241) Land disturbance Temporary and Permanent Throughout Dry Seeding (BMP C120) project as needed Land disturbance Mulching (BMP C121) Throughout Dry project as needed Land disturbance Nets and Blankets (BMP C122) NA Dry Land disturbance Plastic Covering (BMP C123) 10/15/2019 Dry Land disturbance Sodding (BMP C124) Throughout Dry project as needed Land disturbance Topsoiling/Composting (BMP Throughout Dry C125) project as needed Land disturbance Surface Roughening (BMP C130) Throughout Dry project as needed Land disturbance Dust Control (BMP C140) Throughout Dry project as needed Land disturbance Interceptor Dike and Swale (BMP 8/23/2019 Dry C200) Land disturbance Channel Lining (BMP C202) 8/23/2019 Dry Land disturbance Check Dams (BMP C207) 8/23/2019 Dry Land disturbance Outlet protection (BMP C209) 8/26/2019 Dry P a g e | 19 Land disturbance Storm Drain Inlet Protection 8/19/19 Dry (BMP C220) Construction Wattles (BMP C235) NA Dry Construction Concrete handling (BMP C151) NA Dry Construction Sawcutting and Surfacing 4/30/2020 Dry Pollution Prevention (BMP C152) Construction Material Delivery, Storage and 8/26/19 Dry Containment (BMP C153) P a g e | 20 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs Gravel Infiltration Trenches (SWMMWW Section 3.3.11) will be the primary means of stormwater mitigation for the roofs and other hard surfaces on this project. The infiltration trenches will need to be protected from compaction during construction. This can be done by placing orange protective fencing around the trenches as they are constructed in order to avoid compaction from vehicle traffic. P a g e | 21 3 Pollution Prevention Team Table 7 â€“ Team Information Title Name(s) Phone Number Certified Erosion and Sediment Joshua Taylor 360.629.3078 Control Lead (CESCL) Resident Engineer CG Engineering 425.778.8500 Emergency Ecology Contact Jess Eakens 360.407.6442 Emergency Permittee/ Owner Contact Ryan Kilby 425.750.7926 Non-Emergency Owner Contact Ryan Kilby 425.750.7926 Monitoring Personnel TBD TBD Ecology Regional Office Northwest Regional Office 425.649.7000 P a g e | 22 4 Monitoring and Sampling Requirements Monitoring includes visual inspection, sampling for water quality parameters of concern, and documentation of the inspection and sampling findings in a site log book. A site log book will be maintained for all on-site construction activities and will include: â€¢ A record of the implementation of the SWPPP and other permit requirements â€¢ Site inspections â€¢ Stormwater sampling data File a blank form under Appendix D. The site log book must be maintained on-site within reasonable access to the site and be made available upon request to Ecology or the local jurisdiction. Numeric effluent limits may be required for certain discharges to 303(d) listed waterbodies. See CSWGP Special Condition S8 and Section 5 of this template. 4.1 Site Inspection Site inspections will be conducted at least once every calendar week and within 24 hours following any discharge from the site. For sites that are temporarily stabilized and inactive, the required frequency is reduced to once per calendar month. The discharge point(s) are indicated on the Site Map (see Appendix A) and in accordance with the applicable requirements of the CSWGP. 4.2 Stormwater Quality Sampling 4.2.1 Turbidity Sampling Requirements include calibrated turbidity meter or transparency tube to sample site discharges for compliance with the CSWGP. Sampling will be conducted at all discharge points at least once per calendar week. Method for sampling turbidity: Table 8 â€“ Turbidity Sampling Method Turbidity Meter/Turbidimeter (required for disturbances 5 acres or greater in size) Transparency Tube (option for disturbances less than 1 acre and up to 5 acres in size) The benchmark for turbidity value is 25 nephelometric turbidity units (NTU) and a transparency less than 33 centimeters. If the dischargeâ€™s turbidity is 26 to 249 NTU or the transparency is less than 33 cm but equal to or greater than 6 cm, the following steps will be conducted: P a g e | 23 1. Review the SWPPP for compliance with Special Condition S9. Make appropriate revisions within 7 days of the date the discharge exceeded the benchmark. 2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 10 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period. 3. Document BMP implementation and maintenance in the site log book. If the turbidity exceeds 250 NTU or the transparency is 6 cm or less at any time, the following steps will be conducted: 1. Telephone or submit an electronic report to the applicable Ecology Regionâ€™s Environmental Report Tracking System (ERTS) within 24 hours. â€¢ Central Region (Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, Yakima): (509) 575-2490 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/CRO_nerts_online.html â€¢ Eastern Region (Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, Whitman): (509) 329-3400 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/ERO_nerts_online.html â€¢ Northwest Region (King, Kitsap, Island, San Juan, Skagit, Snohomish, Whatcom): (425) 649-7000 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/NWRO_nerts_online.html â€¢ Southwest Region (Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, Wahkiakum,): (360) 407-6300 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/SWRO_nerts_online.html 2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 10 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period 3. Document BMP implementation and maintenance in the site log book. 4. Continue to sample discharges daily until one of the following is true: â€¢ Turbidity is 25 NTU (or lower). â€¢ Transparency is 33 cm (or greater). â€¢ Compliance with the water quality limit for turbidity is achieved. o 1 - 5 NTU over background turbidity, if background is less than 50 NTU o 1% - 10% over background turbidity, if background is 50 NTU or greater â€¢ The discharge stops or is eliminated. P a g e | 24 4.2.2 pH Sampling pH monitoring is required for â€œSignificant concrete workâ€ (i.e., greater than 1000 cubic yards poured concrete over the life of the project). The use of recycled concrete or engineered soils (soil amendments including but not limited to Portland cement-treated base [CTB], cement kiln dust [CKD] or fly ash) also requires pH monitoring. For significant concrete work, pH sampling will start the first day concrete is poured and continue until it is cured, typically three (3) weeks after the last pour. For engineered soils and recycled concrete, pH sampling begins when engineered soils or recycled concrete are first exposed to precipitation and continues until the area is fully stabilized. If the measured pH is 8.5 or greater, the following measures will be taken: 1. Prevent high pH water from entering storm sewer systems or surface water. 2. Adjust or neutralize the high pH water to the range of 6.5 to 8.5 su using appropriate technology such as carbon dioxide (CO2) sparging (liquid or dry ice). 3. Written approval will be obtained from Ecology prior to the use of chemical treatment other than CO2 sparging or dry ice. Method for sampling pH: Table 9 â€“ pH Sampling Method pH meter pH test kit Wide range pH indicator paper P a g e | 25 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies 5.1 303(d) Listed Waterbodies Is the receiving water 303(d) (Category 5) listed for turbidity, fine sediment, phosphorus, or pH? Yes No List the impairment(s): N/A 5.2 TMDL Waterbodies Waste Load Allocation for CSWGP discharges: N/A List and describe BMPs: N/A Discharges to TMDL receiving waterbodies will meet in-stream water quality criteria at the point of discharge. The Construction Stormwater General Permit Proposed New Discharge to an Impaired Water Body form is included in Appendix F. P a g e | 26 6 Reporting and Record Keeping 6.1 Record Keeping 6.1.1 Site Log Book A site log book will be maintained for all on-site construction activities and will include: â€¢ A record of the implementation of the SWPPP and other permit requirements â€¢ Site inspections â€¢ Sample logs 6.1.2 Records Retention Records will be retained during the life of the project and for a minimum of three (3) years following the termination of permit coverage in accordance with Special Condition S5.C of the CSWGP. Permit documentation to be retained on-site: â€¢ CSWGP â€¢ Permit Coverage Letter â€¢ SWPPP â€¢ Site Log Book Permit documentation will be provided within 14 days of receipt of a written request from Ecology. A copy of the SWPPP or access to the SWPPP will be provided to the public when requested in writing in accordance with Special Condition S5.G.2.b of the CSWGP. 6.1.3 Updating the SWPPP The SWPPP will be modified if: â€¢ Found ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. â€¢ There is a change in design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the State. The SWPPP will be modified within seven (7) days if inspection(s) or investigation(s) determine additional or modified BMPs are necessary for compliance. An updated timeline for BMP implementation will be prepared. P a g e | 27 6.2 Reporting 6.2.1 Discharge Monitoring Reports Cumulative soil disturbance is one (1) acre or larger; therefore, Discharge Monitoring Reports (DMRs) will be submitted to Ecology monthly. If there was no discharge during a given monitoring period the DMR will be submitted as required, reporting â€œNo Dischargeâ€. The DMR due date is fifteen (15) days following the end of each calendar month. DMRs will be reported online through Ecologyâ€™s WQWebDMR System. 6.2.2 Notification of Noncompliance If any of the terms and conditions of the permit is not met, and the resulting noncompliance may cause a threat to human health or the environment, the following actions will be taken: 1. Ecology will be notified within 24-hours of the failure to comply by calling the applicable Regional office ERTS phone number (Regional office numbers listed below). 2. Immediate action will be taken to prevent the discharge/pollution or otherwise stop or correct the noncompliance. If applicable, sampling and analysis of any noncompliance will be repeated immediately and the results submitted to Ecology within five (5) days of becoming aware of the violation. 3. A detailed written report describing the noncompliance will be submitted to Ecology within five (5) days, unless requested earlier by Ecology. Anytime turbidity sampling indicates turbidity is 250 NTUs or greater, or water transparency is 6 cm or less, the Ecology Regional office will be notified by phone within 24 hours of analysis as required by Special Condition S5.A of the CSWGP. â€¢ Central Region at (509) 575-2490 for Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, or Yakima County â€¢ Eastern Region at (509) 329-3400 for Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, or Whitman County â€¢ Northwest Region at (425) 649-7000 for Island, King, Kitsap, San Juan, Skagit, Snohomish, or Whatcom County â€¢ Southwest Region at (360) 407-6300 for Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, or Wahkiakum Include the following information: 1. Your name and / Phone number 2. Permit number 3. City / County of project 4. Sample results P a g e | 28 5. Date / Time of call 6. Date / Time of sample 7. Project name In accordance with Special Condition S4.D.5.b of the CSWGP, the Ecology Regional office will be notified if chemical treatment other than CO2 sparging is planned for adjustment of high pH water. P a g e | 29 Appendix/Glossary A. Site Map Figure A-1. Site map. P a g e | 30 B. BMP Detail BMP details are shown on the approved TESC plan. Additional/alternative BMPs are listed below and available for download from the Ecology Construction Stormwater website: http://www.ecy.wa.gov/programs/wq/stormwater/construction/index.html Element #1 - Mark Clearing Limits â€¢ BMP C101: Preserving Natural Vegetation â€¢ BMP C102: Buffer Zones â€¢ BMP C103: High Visibility Plastic or Metal Fence â€¢ BMP C233: Silt Fence Element #2 - Establish Construction Access â€¢ BMP C105: Stabilized Construction Entrance/Exit â€¢ BMP C107: Construction Road/Parking Area Stabilization Element #3 - Control Flow Rates â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection â€¢ BMP C241: Temporary Sediment Pond Element #4 - Install Sediment Controls â€¢ BMP C233: Silt Fence â€¢ BMP C235: Wattles â€¢ BMP C241: Temporary Sediment Pond Element #5 - Stabilize Soils â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C125: Topsoiling/Composting â€¢ BMP C130: Surface Roughening â€¢ BMP C131: Gradient Terraces â€¢ BMP C140: Dust Control Element #6 - Protect Slopes â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C130: Surface Roughening â€¢ BMP C200: Interceptor Dike and Swale â€¢ BMP C201: Grass-Lined Channels â€¢ BMP C207: Check Dams Element #7 - Protect Drain Inlets â€¢ BMP C220: Storm Drain Inlet Protection Element #8 - Stabilize Channels and Outlets P a g e | 31 â€¢ BMP C202: Channel Lining â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection Element #9 â€“ Control Pollutants â€¢ BMP C151: Concrete Handling â€¢ BMP C152: Sawcutting and Surfacing Pollution Prevention â€¢ BMP C153: Material Delivery, Storage and Containment â€¢ See Volume IV â€“ Source Control BMPs Element #10 - Control Dewatering NA Element #11: Maintain BMPs â€¢ BMP C150: Materials On Hand â€¢ BMP C160: Certified Erosion and Sediment Control Lead Element #12: Manage the Project â€¢ BMP C150: Materials On Hand â€¢ BMP C160: Certified Erosion and Sediment Control Lead â€¢ BMP C162: Scheduling Element #13: Protect LID BMPs â€¢ BMP C103: High Visibility Fence P a g e | 32 C. Correspondence P a g e | 33 D. Site Inspection Form Permit # Inspection Time Project Date Name Name of Certified Erosion Sediment Control Lead (CESCL) or qualified inspector if less than one acre Print Name: Approximate rainfall amount since the last inspection (in inches): Approximate rainfall amount in the last 24 hours (in inches): Current Weather Clear Cloudy Mist Rain Wind Fog A. Type of inspection: Weekly Post Storm Event Other B. Phase of Active Construction (check all that apply): Pre Construction/installation of Clearing/Demo/Grading Infrastructure/storm/roads erosion/sediment controls Concrete pours Vertical Utilities Construction/buildings Offsite improvements Site temporary stabilized Final stabilization C. Questions: 1. Were all areas of construction and discharge points inspected? Yes No 2. Did you observe the presence of suspended sediment, turbidity, discoloration, Yes No or oil sheen 3. Was a water quality sample taken during inspection? (refer to permit Yes No conditions S4 & S5) 4. Was there a turbid discharge 250 NTU or greater, or Transparency 6 cm or Yes No less?* 5. If yes to #4 was it reported to Ecology? Yes No 6. Is pH sampling required? pH range required is 6.5 to 8.5. Yes No P a g e | 34 If answering yes to a discharge, describe the event. Include when, where, and why it happened; what action was taken, and when. *If answering yes to # 4 record NTU/Transparency with continual sampling daily until turbidity is 25 NTU or less/ transparency is 33 cm or greater. Sampling Date: Results: Parameter Method (circle one) Result Other/Note NTU cm pH Turbidity tube, meter, laboratory pH Paper, kit, meter D. Check the observed status of all items. Provide â€œAction Required â€œdetails and dates. Element # Inspection BMPs BMP BMP Action Inspected needs failed required yes no n/a maintena (describe nce in section F) 1 Before beginning land disturbing Clearing activities are all clearing limits, Limits natural resource areas (streams, wetlands, buffers, trees) protected with barriers or similar BMPs? (high visibility recommended) 2 Construction access is stabilized Construction with quarry spalls or equivalent Access BMP to prevent sediment from being tracked onto roads? Sediment tracked onto the road way was cleaned thoroughly at the end of the day or more frequent as necessary. 3 Are flow control measures Control Flow installed to control stormwater Rates volumes and velocity during construction and do they protect P a g e | 35 downstream properties and waterways from erosion? If permanent infiltration ponds are used for flow control during construction, are they protected from siltation? 4 All perimeter sediment controls Sediment (e.g. silt fence, wattles, compost Controls socks, berms, etc.) installed, and maintained in accordance with the Stormwater Pollution Prevention Plan (SWPPP). Sediment control BMPs (sediment ponds, traps, filters etc.) have been constructed and functional as the first step of grading. Stormwater runoff from disturbed areas is directed to sediment removal BMP. 5 Have exposed un-worked soils Stabilize Soils been stabilized with effective BMP to prevent erosion and sediment deposition? Are stockpiles stabilized from erosion, protected with sediment trapping measures and located away from drain inlet, waterways, and drainage channels? Have soils been stabilized at the end of the shift, before a holiday or weekend if needed based on the weather forecast? Has stormwater and ground water 6 been diverted away from slopes and Protect Slopes disturbed areas with interceptor dikes, pipes and or swales? Is off-site storm water managed separately from stormwater generated on the site? Is excavated material placed on uphill side of trenches consistent with safety and space considerations? Have check dams been placed at regular intervals within constructed channels that are cut down a slope? 7 Storm drain inlets made operable Drain Inlets during construction are protected. Are existing storm drains within the influence of the project protected? P a g e | 36 8 Have all on-site conveyance channels Stabilize been designed, constructed and Channel and stabilized to prevent erosion from Outlets expected peak flows? Is stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes and downstream conveyance systems? 9 Are waste materials and demolition Control debris handled and disposed of to Pollutants prevent contamination of stormwater? Has cover been provided for all chemicals, liquid products, petroleum products, and other material? Has secondary containment been provided capable of containing 110% of the volume? Were contaminated surfaces cleaned immediately after a spill incident? Were BMPs used to prevent contamination of stormwater by a pH modifying sources? Wheel wash wastewater is handled and disposed of properly. 10 Concrete washout in designated Control areas. No washout or excess concrete Dewatering on the ground. Dewatering has been done to an approved source and in compliance with the SWPPP. Were there any clean non turbid dewatering discharges? 11 Are all temporary and permanent Maintain BMP erosion and sediment control BMPs maintained to perform as intended? 12 Has the project been phased to the Manage the maximum degree practicable? Project Has regular inspection, monitoring and maintenance been performed as required by the permit? Has the SWPPP been updated, implemented and records maintained? 13 Is all Bioretention and Rain Garden Protect LID Facilities protected from sedimentation with appropriate BMPs? P a g e | 37 Is the Bioretention and Rain Garden protected against over compaction of construction equipment and foot traffic to retain its infiltration capabilities? Permeable pavements are clean and free of sediment and sediment laden- water runoff. Muddy construction equipment has not been on the base material or pavement. Have soiled permeable pavements been cleaned of sediments and pass infiltration test as required by stormwater manual methodology? Heavy equipment has been kept off existing soils under LID facilities to retain infiltration rate. E. Check all areas that have been inspected. All in place All disturbed All concrete wash out All material storage BMPs soils area areas All discharge All equipment storage All construction locations areas entrances/exits F. Elements checked â€œAction Requiredâ€ (section D) describe corrective action to be taken. List the element number; be specific on location and work needed. Document, initial, and date when the corrective action has been completed and inspected. Element Description and Location Action Required Completion Initials # Date Attach additional page if needed Sign the following certification: â€œI certify that this report is true, accurate, and complete, to the best of my knowledge and beliefâ€ Inspected by: (Signature) Date: (print) Title/Qualification of Inspector: P a g e | 38 E. Construction Stormwater General Permit (CSWGP) P a g e | 39 F. 303(d) List Waterbodies / TMDL Waterbodies Information P a g e | 40 G. Contaminated Site Information P a g e | 41 H. Engineering Calculations P a g e | 42 Centennial Park 18386.20 July 30, 2019 Drainage Report Section VI, Page 1 Section VI â€“ Special Reports and/or Studies Section VI Summary Narrative The following reports are included in this section: 1. Geotechnical Engineering Report by Geotest, dated May 01, 2019. 2. Wetlands Delineation and Fish and Wildlife Habitat Report and Buffer Enhancement Plan by Soundview Consultants dated February 10, 2019. 3. As Built Drawings from Edgecomb Creek Rerouting 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com WETLAND DELINEATION AND FISH AND WILDLIFE HABITAT ASSESSMENT REPORT AND BUFFER ENHANCEMENT PLAN CENTENNIAL PARK FEBRUARY 2019 WETLAND DELINEATION AND FISH AND WILDLIFE HABITAT ASSESSMENT REPORT AND BUFFER ENHANCEMENT PLAN CENTENNIAL PARK FEBRUARY 10, 2019 PROJECT LOCATION 67TH AVE NE & 172ND ST NE/HWY 531 ARLINGTON, WASHINGTON 98030 PREPARED FOR WILLIAMS INVESTMENTS 2517 COLBY AVENUE, EVERETT, WASHINGTON 98201 PREPARED BY SOUNDVIEW CONSULTANTS LLC 2907 HARBORVIEW DRIVE, SUITE D GIG HARBOR, WASHINGTON 98335 (253) 514-8952 Executive Summary Soundview Consultants LLC (SVC) is assisting Williams Investments (Applicant) with a Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan for a proposed multi-family residential and retail commercial development of an 8.81-acre site located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington. The subject property consists of one parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). SVC investigated the subject property for the presence of potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species in the fall of 2018 and winter of 2019. Using current methodology, the site assessment identified one potentially-regulated wetland (Wetland A) and one relict stream channel (Edgecomb Creek) on the subject property and one newly relocated stream (Edgecomb Creek) offsite to the south within 225 feet of the site. Wetland A is considered a Category IV wetland with a standard 40-foot buffer based on the low habitat score per Arlington Municipal Code (AMC) 20.93.830(b). Edgecomb Creek was previously located onsite but was successfully relocated offsite as part of a Washington State Department of Transportation (WSDOT) restoration project. The relict stream channel remains onsite, and the Applicant is seeking to declassify it from being considered a stream as this relict channel no longer meets the stream definition criteria as described in the Washington Administrative Code (WAC) 222-16-030. A technical memorandum regarding this stream declassification request and a water type modification form has been submitted to the Washington Department of Natural Resources (DNR) under separate cover (SVC, 2019). The newly relocated Edgecomb Creek offsite to the south is considered a Type F water with an associated 100-foot buffer per AMC 20.93.730. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species were identified within 225 feet of the subject property. The Applicant proposes a mixed land use development consisting of multi-family residential units and commercial retail space with associated infrastructure to provide additional housing and commercial space within the City of Arlington. A total of 200 residential units and approximately 8,000 square feet of retail area are proposed. The project was carefully designed in order to avoid and minimize impacts to critical areas to the greatest extent feasible, and no direct or indirect wetland impacts are proposed; however, unavoidable fill is required within the relict stream channel which is anticipated to be declassified as a regulated stream feature. Size Category/ Regulated Under Regulated Under Regulated Under Wetland Name Onsite Type1 AMC Chapter 20.93 RCW 90.48 Clean Water Act ~ 21,823 Wetland A IV Yes Yes Yes SF Relict Edgecomb N/A N/A No No Potentially Creek Channel 1. Washington State Department of Ecology (WSDOE) wetland rating system (Hruby, 2014) per AMC 20.93.730 and AMC 20.93.800. 1778.0001 Centennial Park i Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Table of Contents Chapter 1. Introduction ................................................................................................................................... 1 Chapter 2. Proposed Project ........................................................................................................................... 2 2.1 Location ................................................................................................................................................... 2 2.2 Proposed Project .................................................................................................................................... 2 Chapter 3. Methods .......................................................................................................................................... 4 Chapter 4. Background .................................................................................................................................... 5 4.1 Landscape Setting ................................................................................................................................... 5 4.2 Vegetation ................................................................................................................................................ 5 4.3 Soils .......................................................................................................................................................... 6 4.4 Stream and Wetland Inventories .......................................................................................................... 6 4.5 Priority Habitats and Species ................................................................................................................ 6 4.6 Precipitation ............................................................................................................................................ 6 Chapter 5. Results ............................................................................................................................................. 8 5.1 Wetlands .................................................................................................................................................. 8 5.2 Relict Edgecomb Creek Channel ....................................................................................................... 10 5.3 Artificial Drainage Ditches ................................................................................................................. 11 5.4 Offsite Improvements ......................................................................................................................... 12 5.5 Previously Identified Features ............................................................................................................ 13 Chapter 6. Regulatory Considerations ......................................................................................................... 15 6.1 Local Critical Areas Requirements ..................................................................................................... 15 6.2 State and Federal Considerations ....................................................................................................... 16 Chapter 7. Buffer Enhancement Plan .......................................................................................................... 20 7.1 Purpose and Need ................................................................................................................................ 20 7.2 Description of Impacts and Mitigation Strategy .............................................................................. 20 7.3 Approach and Best Management Practices ...................................................................................... 21 7.4 Goals, Objectives, and Performance Standards ............................................................................... 21 7.5 Plant Materials and Installation .......................................................................................................... 22 7.6 Maintenance & Monitoring Plan ........................................................................................................ 24 7.7 Reporting ............................................................................................................................................... 24 7.8 Contingency Plan ................................................................................................................................. 24 Chapter 8. Closure .......................................................................................................................................... 26 Chapter 9. References .................................................................................................................................... 27 Figures Figure 1. Vicinity Map. ................................................................................................................ 2 Figure 2. Aerial Image of the Subject Property. ........................................................................... 5 Tables Table 1. Precipitation Summary1. ................................................................................................. 7 Table 2. Wetland Summary .......................................................................................................... 8 Table 3. Wetland A Summary. ..................................................................................................... 9 Table 4. Precipitation Summary1. ............................................................................................... 13 1778.0001 Centennial Park ii Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Table 5. Measures to Minimize Impacts to Wetlands .................................................................. 15 Appendices Appendix A â€” Methods and Tools Appendix B â€” Background Information Appendix C â€” Site Plans Appendix D â€” Data Forms Appendix E â€” Wetland Rating Forms Appendix F â€” Wetland Rating Maps Appendix G â€” Edgecomb Creek Relocation Documentation Appendix H â€” Qualifications 1778.0001 Centennial Park iii Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 1. Introduction Soundview Consultants LLC (SVC) is assisting Williams Investments (Applicant) with a Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan for a proposed multi-family residential and retail commercial development of an 8.81-acre site located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington. The subject property consists of one parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). The purpose of this Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan is to identify the presence of potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species that may be found on or near the subject property and to assess potential impacts to any such critical areas and/or species from the proposed project. The WSDOT recently completed a stream restoration project for Edgecomb Creek, which was previously located on the subject property; the stream has since been relocated offsite and associated offsite mitigation has already occurred for these impacts. This report provides conclusions and recommendations regarding: â€¢ Site description and areas of assessment; â€¢ Background research, identification, and assessment of potentially-regulated wetlands and fish and wildlife habitat and/or species in the vicinity of the proposed project; â€¢ Standard buffer recommendations, building setbacks, and development limitations; â€¢ Existing site map detailing identified critical areas; â€¢ Federal regulatory Considerations; â€¢ Proposed site plan with proposed project details; and â€¢ Supplemental information necessary for local, state, and federal regulatory review. 1778.0001 Centennial Park 1 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 2. Proposed Project 2.1 Location The subject property is located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington (Figure 1). The subject property consists of one tax parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). To access the subject property from I-5 North take Exit 206 for WA-531E/172nd Street Northeast/Edgecomb Road toward Lakewood/Smokey Point. Continue for approximately 2.3 miles, where the subject property will be on the left at the intersection of 172nd Street Northeast and 67th Avenue Northeast. Figure 1. Vicinity Map. Subject Property Location 2.2 Proposed Project The Applicant proposes a mixed land use development consisting of multi-family residential units and commercial retail space with associated infrastructure. Approximately 200 residential units and approximately 8,000-square feet of retail area are proposed, with associated parking, a recreational park, garden and open space. Both the park and open space meet the City of Arlingtonâ€™s requirements, and these areas will be vegetated with appropriate plant species. The project was carefully designed in order to avoid and minimize impacts to critical areas to the greatest extent feasible, and no direct or indirect wetland impacts are proposed; however, unavoidable fill is required for the relict stream channel. 1778.0001 Centennial Park 2 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 The proposed project includes declassification of a relict stream (relict Edgecomb Creek channel) that has been successfully relocated offsite to the south by a WSDOT fish passage barrier culvert removal project. Additional information regarding the relict stream channel and its proposed declassification is provided in Section 5.2 of this report. The onsite relict stream channel will be filled to support the proposed development. The existing wetland (Wetland A) will not be directly impacted by the proposed development, and minor work within the outer 25 percent of the buffer is proposed for the recreational path, as allowed per AMC 20.93.820.1.3(A). 1778.0001 Centennial Park 3 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 3. Methods SVC investigated, assessed, and delineated any potentially-regulated wetlands, waterbodies, and other fish and wildlife habitat on and within 225 feet of the subject property in October and November 2018. All determinations were made using observable vegetation, hydrology, and soils in conjunction with data from the U.S. Geological Survey (USGS) topographic maps, the Natural Resource Conservation Service (NRCS) soil survey, U.S. Fish and Wildlife Service (USFWS) National Wetland Inventory (NWI), Washington Department of Fish and Wildlife (WDFW) Priority Habitats and Species (PHS) and SalmonScape mapping tools, Department of Natural Resources (DNR) water typing system, Snohomish Countyâ€™s public geographic information systems (GIS), local precipitation data, and various orthophotographic resources. Appendix A contains further details for the methods and tools used to prepare this report. Wetland boundaries were determined in accordance with AMC 20.93.810, and as outlined in the U.S. Army Corps of Engineersâ€™ (USACE) Wetlands Delineation Manual (Environmental Laboratory, 1987) as modified according to the guidelines established in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, Version 2.0 (USACE, 2010) and Field Indicators of Hydric Soils in the United States (USDA, 2018). Qualified wetland scientists marked boundaries of the onsite wetland with orange surveyorâ€™s flagging labeled alpha-numerically and tied to 3-foot lath or vegetation along the wetland boundary. Pink surveyorâ€™s flagging was labeled alpha- numerically and tied to 3-foot lath or vegetation at formal sampling locations to mark the points where detailed data was collected (DP-1 to DP-9). Additional tests pits were excavated at regular intervals inside and outside of the wetland boundary to further confirm the delineation. SVC classified all wetlands using both the hydrogeomorphic (Brinson, 1993) and Cowardin (Cowardin, 1979; Federal Geographic Data Committee, 2013) classification systems. Following classification and assessment, all wetlands were rated and categorized using the Washington State Wetlands Rating System for Western Washington (Hruby, 2014) and the definitions established in AMC 20.93.800(a). The fish and wildlife habitat assessment was conducted during the same site visits by qualified fish and wildlife biologists. The experienced biologists made visual observations using stationary and walking survey methods for both aquatic and upland habitats noting any special habitat features or signs of fish and wildlife activity. 1778.0001 Centennial Park 4 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 4. Background 4.1 Landscape Setting The subject property is located in the City of Arlington in a mixed-use setting and is currently undeveloped (Figure 2). The subject property abuts 67th Avenue Northeast to the west with commercial properties beyond; 172nd Street Northeast/Highway 531 to the south; a church to the west; and single-family residential and undeveloped forested areas to the north. Topography on the eastern portion of the site slopes down approximately 20 feet to the center, and then remains flat at approximately 140 feet above mean sea level to the western property boundary (Appendix B1). The study area is within the Snohomish River Watershed (Water Resources Inventory Area 7). Figure 2. Aerial Image of the Subject Property. Subject Property Location 4.2 Vegetation Vegetation on the subject property is dominated by upland grasses and forbs throughout the majority of the site, including orchard grass (Dactylis glomerata), colonial bentgrass (Agrostis capillaris), narrowleaf plantain (Plantago lanceolata), and common velvetgrass (Holcus lanatus). Forested cover is present through the center and southern site boundary following the relict stream channel. Dominant forest vegetation includes western red cedar (Thuja plicata), Douglas fir (Pseudotsuga menziesii), and red alder (Alnus rubra) with an understory of red-osier dogwood (Cornus alba), salmonberry (Rubus spectabilis), salal (Gaultheria shallon), and western swordfern (Polystichum munitum). 1778.0001 Centennial Park 5 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 4.3 Soils The NRCS soil survey identifies two soil series on the subject property: Everett gravelly sandy loam, 8 to 15 percent slopes, and Norma loam. An NRCS soil survey map is provided in Appendix B3. A description of the soil profiles is below. Everett gravelly sandy loam, 8 to 15 percent slopes (18) According to the NRCS survey, Everett gravelly sandy loam, 8 to 15 percent slopes, is a somewhat excessively drained soil formed in glacial outwash. Permeability is rapid, and water capacity is low. In a typical profile, the surface layer is dark brown very gravelly sandy loam about 12 inches thick. The upper part of the subsoil is brown very gravelly loamy sand about 5 inches thick. The lower part of the subsoil is a dark brown extremely gravelly sand to a depth of 60 inches of more. The subsoil is cemented in some locations. This soil is listed as non-hydric by NRCS. Norma loam (39) According to the NRCS survey, Norma loam is a deep, poorly drained soil formed in alluvium. In a typical profile, the surface layer is very dark gray loam about 10 inches thick. The subsoil is dark grayish brown sandy loam about 18 inches thick. The substratum is a dark gray sandy loam to a depth of 60 inches or more. This soil is listed as hydric by NRCS. 4.4 Stream and Wetland Inventories The USFWS NWI map (Appendix B2) identifies a potential riverine intermittent streambed seasonally flooded (R4SBC) watercourse along the southern property boundary in the same vicinity as the mapped DNR stream. The NWI also identifies a potential emergent wetland in the northeast corner of the site. The Snohomish County wetland and stream inventory (Appendix B4) identifies a stream (Edgecomb Creek) along the southern parcel boundary (DNR and WDFW refer to this stream as Middle Fork Quilceda Creek). The DNR stream typing map (Appendix B7) identifies Middle Fork Quilceda Creek, a Type F (fish-bearing) stream, running west to east along the southern property boundary. No other potentially-regulated streams or wetlands are documented within 225 feet of the subject property. 4.5 Priority Habitats and Species The WDFW PHS map (Appendix B4) identifies the potential presence of coho, Dolly Varden/bull trout, and fall chum in Middle Fork Quilceda Creek along the southern portion of the subject property. The WDFW Salmonscape map (Appendix B6) lists the documented presence of coho and chum salmon; modeled presence of chinook salmon, pink salmon, and winter steelhead trout; and presumed presence of Dolly Varden/bull trout in the stream along the southern portion of the subject property. No other priority habitats or species are documented within 225 feet of the subject property. 4.6 Precipitation Precipitation data was obtained from the National Oceanic and Atmospheric Administration (NOAA) weather station at Seattle-Tacoma Airport in order to acquire precipitation values during and preceding the field investigation. A summary of data collected is provided in Table 1. 1778.0001 Centennial Park 6 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Table 1. Precipitation Summary1. Percent of Day 1 Week 2 Weeks Last 30 days Year-to-Date2 Date Day Of Before Prior Prior (Observed/Normal) (Observed/Normal) Normal (month/year) 10/12/18 0.00 0.00 0.78 1.15 1.91/2.01 1.09/0.97 95/112 11/4/18 0.03 0.18 1.23 3.24 4.02/3.98 4.33/4.26 101/102 Notes: 1. Precipitation level provided in inches. Data obtained from the NOAA (http://w2.weather.gov/climate/xmacis.php?wfo=sew) for Seattle- Tacoma airport. 2. Year-to-date precipitation is the total for the water year from October 1st to the onsite date(s). Precipitation levels during both site visits were within the statistical normal range. The first site visit was conducted in the beginning of the water year and shows that the precipitation levels were 112 percent of normal at that time. Precipitation levels during the second site visit were also noted to be within the statistical normal range; however, significant rainfall was recorded (3.24 inches) in the two weeks leading up to the site investigation during the November site visit, and over 1 inch was recorded in the week prior. Such conditions were considered in making professional wetland boundary determinations. 1778.0001 Centennial Park 7 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 5. Results The October 2018 site investigation identified one potentially-regulated wetland (Wetland A) and one relict stream channel (Edgecomb Creek) on the subject property and one newly relocated stream (Edgecomb Creek) offsite to the south within 225 feet of the site. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, or priority species were identified in the vicinity of the subject property. 5.1 Wetlands The identified wetland contained indicators of wetland hydrology, hydric soils, and a predominance of hydrophytic vegetation according to current wetland delineation methodology. A map depicting the location and sizes of the wetland is presented in Appendix C. Data forms are provided in Appendix D, wetland rating forms are provided in Appendix E, and wetland rating maps are provided in Appendix F. Table 2 below summarizes the wetland identified during the site investigation. Table 2. Wetland Summary Predominant Wetland Classification / Rating Wetland Standard Wetland City of Size Onsite Buffer Width Cowardin1 HGM2 WSDOE3 5 Arlington4 (SF) (feet) A PSS/EMBC Depressional IV IV ~21,823 40 Notes: 1. Cowardin et al. (1979), Federal Geographic Data Committee (2013), or NWI Class based on vegetation: PSS = Palustrine Scrub Shrub, PEM = Palustrine Emergent; Modifiers for Water Regime: B = Seasonally Saturated, C = Seasonally Flooded. 2. Brinson, M. M. (1993). 3. Current WSDOE rating (Hruby, 2014). 4. AMC 20.93.800 wetland classification Arlington rating according to Washington State Wetland Rating System for Western Washington (Hruby, 2014). 5. AMC 20.93.830(b) standard buffer widths. Wetland A Wetland A is approximately 21,823 square feet (0.50 acre) in size and is located on the northern portion of the subject property, extending a little offsite to the north. Hydrology for Wetland A is provided by a seasonally-high water table, direct precipitation, surface runoff from adjacent uplands, and flow from a ditch that runs south to north through the wetland. Wetland vegetation is dominated by red alder saplings (Alnus rubra), salmonberry (Rubus spectabilis), and non-native invasive reed canarygrass (Phalaris arundinacea). Wetland A is a Palustrine Scrub Shrub/Emergent, Seasonally Saturated, and Seasonally Flooded wetland (PSS/EMBC). Per AMC 20.93.800, Wetland A is considered a Category IV depressional wetland. Table 3 provides a summary of Wetland A. 1778.0001 Centennial Park 8 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Table 3. Wetland A Summary. WETLAND A â€“ INFORMATION SUMMARY Location: Wetland A is located on the northern portion of the subject property, extending a little offsite to the north. Local Jurisdiction City of Arlington WRIA 7 â€“ Snohomish River WSDOE Rating IV (Hruby, 2014) City of Arlington IV Rating City of Arlington 40 feet Buffer Width Wetland Size ~ 21,823 SF Cowardin PSS/EMBC Classification HGM Classification Depressional Wetland Data Sheet(s) DP-4 Upland Data Sheet (s) DP-5 Boundary Flag color Orange Dominant Wetland vegetation is dominated by red alder saplings, salmonberry, and non-native Vegetation invasive reed canarygrass. Soils Hydric soil indicator A11 (Depleted Below Dark Surface) was observed. Hydrology is likely provided by a seasonally-high water table, direct precipitation, Hydrology surface runoff from adjacent uplands, and flow from a ditch that runs south to north through the wetland. Rationale for Wetland boundaries were determined by a transition to hydric soils. Delineation Rationale for Local rating is based upon WSDOEâ€™s current rating system per AMC 20.93.800(a). Local Rating Wetland Functions Summary Wetland A provides moderate water quality functions. The wetland retains water seasonally and can provide some pollutant filtration as dense, herbaceous plants cover at Water Quality least half the area. This ability to provide pollutant filtration is valuable as the unit is in a sub-basin where water quality is an issue and TMDLs are in place. Wetland A scores 6 out of 9 points for water quality functions. Wetland A provides low hydrologic functions due to its small size, relative position within Hydrologic the sub-basin, and minimal cover of dense, rigid plants that would help slow surface flows. Wetland A scores 3 out of 9 points for hydrologic functions. Wetland A scores low for habitat functions due to lack of priority habitats, location within Habitat a high intensity land use landscape, and presence of invasive species. Wetland A scores 3 out of 9 points for habitat functions. The buffer surrounding Wetland A consists of fields and shrub areas that are degraded by Buffer Condition non-native invasive speciec such as cutleaf blackberry (Rubus laciniatus) and Himalayan blackberry (Rubus armeniacus). 1778.0001 Centennial Park 9 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 5.1.1 Wetland Buffers Under AMC 20.93.830(b)(1), the standard buffer for a Category IV wetlands is 40 feet by following the typical minimization measures. A 15-foot building setback is also required from the edge of all critical area buffers per AMC 20.93.340. The buffer for the onsite wetland is generally low functioning due the dominance of non-native invasive species such as blackberry and reed canarygrass. 5.2 Relict Edgecomb Creek Channel The site investigations identified a relict stream channel associated with Edgecomb Creek on the southern portion of the site. Until recently, Edgecomb Creek entered the subject property through a culvert (barrier 99058) in the southeastern portion of the subject property, flowing north under SR 531. The stream flowed west along the southern border of the subject property, and then continued offsite through an additional culvert (barrier 99059) that conveyed flow south, back under SR 531. Both culverts are identified as barriers to fish passage in the completed SR 531 Edgecomb Creek Fish Passage Project, and the approved WSDOT USFWS, and National Marine Fisheries Service (NMFS) No Effect Project Notification Form (NMFS and USFWS, 2016). The upstream barrier was removed with the elimination of that culvert during the 2017 implementation of the Edgecomb Creek Fish Passage Project, but the downstream fish passage barrier culvert remains. The 2017, SR 531 Edgecomb Creek Fish Passage Project relocated â€œa 330-foot section of channel between two culvert fish barriers that [had] non-functioning weirs that [posed] additional barriers to fish migrationâ€ (USFWS, 2016). Of this section of relocated stream, 275 feet were previously located on the subject property and covered approximately 5,000 square feet of area. The relocation of the stream offsite and elimination of both culverts was expected to eliminate the fish passage barriers and potential fish stranding under SR 531. The downstream culvert was not removed with this 2017 construction project and it remains in place; however, it conveys only stormwater and untreated sheet flow from the road during precipitation events since the stream was rerouted to the new channel. The stream relocation project resulted in the creation of over 650 linear feet of meandering stream channel offsite to south of the SR 531 as mitigation for the project. Both culverts which originally connected onsite portions of the drainage to Edgecomb creek were identified as fish passage barriers, and the proposed project action included â€œconstructing the new stream channel, screening and blocking barrier 99058, plugging and abandoning barrier 99059, diverting the stream into the new section of channel, and turning over the existing channel to the City of Arlington for stormwater treatmentâ€. Furthermore, the project was implemented to â€œimprove access for salmon to 1.77 miles of upstream habitat, after removing the fish barrierâ€. The documents state that â€œthe abandoned channel is considered fish habitat that will be displaced and replaced by the constructed and improved stream channelâ€¦â€ (USFWS, 2016). In addition to increased fish habitat function, the completed project was constructed to improve water quality; the project findings include the statement: â€œexisting stormwater drainage from SR 531 drains north directly to Edgecomb Creek, and this section of the stream will be moved, thus improving water quality for Edgecomb Creek. The project removes two fish barriers and a series of weir barriers in the stream to improve passage. Following relocation, more of the stream will be connected to adjacent wetlands increasing the quantity of rearing habitat available to salmon that spawn in the creek. Edgecomb Creek will have at least 200 additional feet of stream length due to the stream relocationâ€ (USFWS, 2016). In addition to the USFWS consultation, NMFS was consulted and includes similar description to the USFWS form, with the exception on pages 2 and 4 of the NMFS document which indicate barrier 1778.0001 Centennial Park 10 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 99058 will be left open to allow Edgecomb Creek to backwater into a portion of the remnant channel and retain this area as refugia habitat during high flows. However, further in this document on page 10 under â€œproject descriptionâ€, the document states that fish will be excluded from the existing channel and moved downstream of the project area with the remnant channel and dysfunction weirs turned over to the City of Arlington. The document also states that barrier 99059 will be screened and blocked with structural rock and streambank material to allow drainage from the abandoned stream channel that will continue to drain stormwater runoff, effectively isolating the remnant portions of the onsite drainage from stream habitat function. In addition, the construction plan set included in the NMFS document shows the culvert (barrier 99059) â€œTo be Abandonedâ€. As a result of the stream relocation, the relict channel no longer supports baseflow and appears to only convey stormwater from direct precipitation, overland flow from a nearby roadside ditch, and untreated runoff from SR 531. During the October 2018 site visit, no baseflow was noted in the relict channel, although pooled water was observed in scour holes and in the culvert itself. Similarly, during the November 2018 site visit, only shallow pools of water were observed in scoured areas despite recent heavy rainfall. Although the stream channel is abandoned, the culvert on the downstream reach is still in place, allowing for the stormwater that flows through the channel to enter Edgecomb Creek south of the subject property. As untreated stormwater during storm events is the main hydrology source for the relict channel, the channel will likely accumulate large loads of sediment and debris from SR 531 and the roadside ditch over time, and the relict channel could begin to fill in. The relict channel does not provide fish habitat due to the lack of stream hydrology and habitat connectivity to downstream fish-bearing waters. In addition, as identified on the USFWS form, barrier 99059 is a fish blockage culvert and presents the potential for fish stranding in the event high flood waters if fish are able to access the remaining onsite channel. Due to the successful relocation of the channel offsite, the Applicant is in the process of declassifying the relict channel as a stream as it no longer meets the definition of a typed waterbody described in WAC 222-16-030. A technical memorandum and water type modification form has been submitted to DNR under separate cover (SVC, 2019). As such, no stream buffers should be required for the relict channel. The relocated offsite Edgecomb Creek channel is considered a Type F water and therefore requires a standard 100-foot buffer per AMC 20.93.730 as no ESA-listed fish species are identified to have documented or presumed use, according to WDFW SalmonScape inventory. However, SR 531 intersects the buffer associated with offsite Edgecomb Creek, entirely interrupting the buffer from projecting onto the subject property, therefore, no buffer associated with Edgecomb Creek should be located on the subject property. 5.3 Artificial Drainage Ditches Three onsite linear ditches were observed on or near the subject property; all of which appear to be artificial and intentionally created. While the soils on-site are largely mapped as hydric, investigations found the soils throughout the site lack redoximorphic features and represent upland soil conditions. Therefore, all the ditches appear to have been excavated from non-hydric soils. Northern Ditch 1778.0001 Centennial Park 11 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 The northern ditch runs east to west along the northern parcel boundary and through Wetland A, receiving flows from the central ditch, and then continues offsite to the east into the Cityâ€™s stormwater system at the intersection of 67th Avenue Northeast and Highland View Drive, as documented in the Cityâ€™s stormwater infrastructure inventory. Historic aerials indicate that the site was previously used as agricultural land in the 1950s and 1960s (Appendices B8 and B9); the ditch is faintly visible in these aerials in the northern portion of the site. The ditch appears to be manmade and only conveys stormwater through the site. Central Ditch The central ditch flows south to north through the center of the site, beginning as a swale and flowing through Wetland A, and then flowing into the northern ditch. This ditch does not appear to be present in the 1954 and 1969 historic aerial photographs, but does appear in a the 1990 aerial photograph, suggesting that it was likely established sometime between 1969 and 1990. The ditch appeared to be intentionally excavated to help drain the site for agricultural purposes. Roadside Ditch A manmade roadside ditch is present along the southern portion of the site which originates offsite to the east. The ditch flows in an east to west orientation, eventually discharging into the relict Edgecomb Creek channel and is the only source of hydrology for the relict channel. The ditch appears to have been previously excavated and is vegetated by grass upslope along the sides of the banks to the east. The ditch conveys only stormwater from upslope and surface flow from the highway as documented on the Cityâ€™s stormwater infrastructure map. 5.4 Offsite Improvements The WSDOT completed the Edgecomb Creek restoration project in order to improve fish passage of the stream. Edgecomb Creek has been relocated offsite to the south of the subject property. The new reach of the channel is located entirely south of SR 531, eliminating the roadway crossings, and therefore, also eliminating the need for the culverts which may present barriers to fish passage. The relocation project has resulted in an increase of 650 linear feet of new stream channel, restored habitat features, and unimpeded access to upstream spawning habitat. The project has provided an overall benefit to the function of the stream by removing these fish barriers. According to the memorandum by WSDOT, approximately 0.13 acres and 329 linear feet of the stream were permanently impacted by this project due to abandonment of the channel on the subject property. Approximately 0.09 acre and 189 linear feet of the riffle and pool habitat within Edgecomb Creek were impacted temporarily for construction access and water handling. Mitigation for these impacts included the creation of 0.15 acre/665 linear feet of new stream area, as well as restoration within the stream channel; restoration of 0.48 acre of an adjacent wetland; and improved connectivity between Edgecomb Creek and the adjacent wetlands. The instream restoration and improvements included the elimination of fish barriers, increased channel meander and overall stream habitat area, improved floodplain connectivity to adjacent wetlands, addition of gravel substrate, limiting the extent of downstream grading, and stabilizing new stream meander banks to provide habitat for adult and juvenile salmon. Restoration for the adjacent riparian habitat was also completed and included: replanting affected areas with native vegetation; stabilizing stream meander bends; planting roadside areas with low growing woody vegetation; 1778.0001 Centennial Park 12 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 planting occasionally or seasonally flooded streambanks with appropriate native plant species that will aid in detaining flows and providing shade and cover habitat for juvenile fish and wildlife species; and planting seasonally flooded streambanks with emergent plants with fibrous roots to stabilize the banks and produce organic matter and support habitat development for macroinvertebrates. The restoration site will be monitored annually for 10 years following its construction. The riparian plantings will be monitored for three years to ensure planting survival, and the stream will be monitored in years 1, 5, and 10 for fish passage. A contingency plan is in place to address fish passage, plant survival, herbivory, weed control, and vandalism. 5.5 Previously Identified Features According to WSDOTâ€™s â€œAquatic Resources Assessment Reportâ€ dated November 2016, an area along the northeastern extent of the relict onsite channel was considered a potential wetland during the project and was identified as â€œWetland 3â€. Additionally, WSDOT identified the roadside ditch as a potential jurisdictional WOTUS. Please refer to Chapter 6 for WOTUS considerations. The WSDOT delineation occurred during January and February of 2016 (wet season), during a period of time in which precipitation was above statistically normal levels. Precipitation data was obtained from the NOAA weather station at Seattle-Tacoma Airport in order to obtain precipitation values during and preceding the prior field investigation efforts from WSDOT for the general Puget Sound area. While this weather station is not in the immediate vicinity of the subject property, it is the most reliable weather station with consistent and scientifically accurate measurements. A summary of data collected is provided in Table 4. Table 4. Precipitation Summary1. Percent of Day 1 Week 2 Weeks Last 30 days Year-to-Date2 Date Day Of Before Prior Prior (Observed/Normal) (Observed/Normal) Normal (month/year) 1/28/16 0.61 0.82 3.91 5.51 7.21/5.58 31.60/20.50 129/154 2/25/16 0.00 0.02 0.76 3.61 12.04/7.96 36.60/24.10 151/152 Notes: 3. Precipitation levels provided in inches. Data obtained from the NOAA (http://w2.weather.gov/climate/xmacis.php?wfo=sew) for Seattle- Tacoma airport. 4. Year-to-date precipitation is the total for the water year from October 1st to the onsite date(s). Precipitation levels during the January 2016 site visits during which time Wetland 3 was delineated were well above the statistical normal for the water year and 30 days prior to the visit. In addition, over 5.5 inches of precipitation was recorded in the two weeks leading up to the site investigation and almost 4 inches was recorded one week leading up to the site investigation. Therefore, hydrologic conditions encountered by WSDOT would have been much wetter than normal, potentially resulting in false-positive indicators of wetland hydrology. The area identified by WSDOT as Wetland 3 was investigated by SVC and was determined to be non- wetland as it lacks hydric soils. While hydrophytic vegetation is present due to the presence of common facultative (FAC) species typical of disturbed and/or upland area, and wetland hydrology is present during the wet season in one of the data plots, the hydrology does not appear to be sustained long enough throughout the growing season to develop redoximorphic features in the soil. Previous 1778.0001 Centennial Park 13 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 investigations by WSDOT identified hydric soils onsite; however, multiple test pits and formalized data plots in this area were unable to replicate these findings. SVC found that the soils in these areas lacked redox starting within the first 12 inches of the soil profile, indicating that a seasonally high- water table (water table within 12 inches of the soil surface) is not present during the growing season, and therefore the redox features have not formed. In addition, a depleted layer was also not found within 12-inches of the soil surface. SVC collected two data plots (DP-8 and DP-9) in this area which confirm the lack of hydric soils. The WSDOT assessment report indicates that the roadside ditch that contributes to the relict Edgecomb Creek is considered a jurisdictional ditch. According to the report the ditch exhibited signs of scour, the presence of a defined channel with bed and bank, debris rack, areas of flowing or standing water, and clear areas of gravel devoid of vegetation. The report later notes that no stream gravel was observed in the ditch. It should be noted that both the WSDOT investigations occurred during a wet season with significantly higher levels of precipitation than normal, which likely exaggerated hydrology both on and offsite. SVC completed investigations during statically normal precipitation levels and did not observe any of these characteristics. No flowing or standing water was observed during the fall investigation, and the ditch was noted to be vegetated with grass throughout the channel as well as the banks. No stream cobble or gravel was observed in the ditch. 1778.0001 Centennial Park 14 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 6. Regulatory Considerations The site investigations in fall of 2018 identified and delineated one potentially-regulated wetland (Wetlands A) and one relict stream channel on the subject property, and one regulated stream channel offsite to the south within 225 feet of the site. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, or priority species were identified on or adjacent to the subject property during the site investigations. 6.1 Local Critical Areas Requirements 6.1.1 Wetland Buffers AMC 20.93.800(a) has adopted the 2014 Revised Washington State Wetland Rating System for Western Washington (Hruby, 2014). With this system, Category IV wetlands are those that generally provide low levels of function and score less than 16 points. The onsite Wetland A is classified as a Category IV wetland. Under AMC 20.93.830, the standard buffers for a Category IV wetland is 40 feet assuming the implementation of all minimization measures listed in ACM Table 20.93-5 (Table 5 below). Walking trails are proposed within outer twenty-five percent of the wetland buffer. Per AMC 20.93.430.3.A, walking trails are allowed in this portion of the buffer provided that they avoid the removal of significant trees, utilize pervious surfaces, are no more than five feet in width, and are limited to pedestrian use. Per AMC 20.93.830.b.3, the standard buffer widths assume that the buffer is vegetated with an appropriate native plant community; if the buffer is unvegetated, sparsely vegetated, or vegetated with non-native invasive, then the buffer should be planted or widened. The existing buffer for Wetland A is currently degraded with a presence of non-native, invasive species. Therefore, a buffer enhancements plan is proposed, and will include removing non-native, invasive species and replanting with native species, which will result in an improvement of ecological function of the wetlands and buffers over current conditions. Table 5. Measures to Minimize Impacts to Wetlands Examples of Activities and Uses that Cause Examples of Measures to Minimize Impacts Disturbance Disturbances Lights â€¢Parking lots â€¢Direct lights away from critical areas and â€¢Warehouses buffers â€¢Manufacturing â€¢Day use only regulations preventing the need â€¢Residential for lights â€¢Parks â€¢Timer on lights Noise â€¢Manufacturing â€¢Locate activity that generates noise away from â€¢Residential wetlands â€¢Seasonal limitations on hours of operation Toxic runoff* â€¢Parking lots â€¢Route all new, untreated runoff away from â€¢Roads wetland while ensuring wetland is not dewatered â€¢Manufacturing â€¢Establish covenants limiting use of pesticides â€¢Residential areas 1778.0001 Centennial Park 15 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Examples of Activities and Uses that Cause Examples of Measures to Minimize Impacts Disturbance Disturbances â€¢Application of agricultural pesticides within 150 ft of critical area or buffer â€¢Landscaping â€¢Apply integrated pest management Stormwater runoff â€¢Parking lots â€¢Retrofit stormwater detention and treatment for â€¢Roads roads and existing adjacent development â€¢Manufacturing â€¢Prevent channelized flow from lawns that â€¢Residential areas directly enters the buffer â€¢Commercial â€¢Landscaping Change in water â€¢Impermeable surfaces â€¢Infiltrate or treat, detain, and disperse into regime â€¢Lawns buffer new runoff from impervious surfaces and â€¢Tilling new lawns â€¢Forest and forest duff removal â€¢Retain minimum forest and forest duff Pets and human â€¢Residential areas â€¢Use privacy fencing; plant dense vegetation to disturbance â€¢Parks delineate buffer edge and to discourage disturbance using vegetation appropriate for the ecoregion; place wetland and its buffer in a separate tract Dust â€¢Construction sites â€¢Use best management practices to control dust Disruption of â€¢Roads â€¢Maintain connection to offsite areas that are corridors or â€¢Residential undisturbed connections â€¢Commercial â€¢Restore corridors or connections to offsite â€¢Manufacturing habitats by replanting â€¢Landscaping â€¢Stormwater * These examples are not necessarily adequate for minimizing toxic runoff if threatened or endangered species are present at the site. 6.1.2 Stream Buffers The relocated offsite Edgecomb Creek channel is considered a Type F water and therefore requires a standard 100-foot buffer per AMC 20.93.730 as no ESA-listed fish species are identified to have documented or presumed use, according to WDFW SalmonScape inventory. However, SR 531 intersects the buffer associated with offsite Edgecomb Creek, entirely interrupting the buffer from projecting onto the subject property, therefore, no buffer associated with Edgecomb Creek should be located on the subject property. 6.2 State and Federal Considerations 6.2.1 Potential Waters of the United States (WOTUS) The results of the 2018 site investigations identified one wetland, one relict stream channel (Edgecomb Creek), and three excavated drainage ditches on the subject property. Additional wetlands were 1778.0001 Centennial Park 16 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 identified by WSDOT offsite to the south of SR 531 and are associated with Edgecomb Creek restoration area. The onsite wetland is a small depressional wetland that receives water primarily from direct precipitation and surface runoff from adjacent upland areas. The offsite wetland to the south appear to be larger depressional and riverine systems associated with Edgecomb Creek. The ditches appear to have been originally constructed in upland areas for the purpose of making property boundaries and conveying stormwater runoff from adjacent roads, uplands, and for agricultural purposes. 6.2.2 The Federal Clean Water Rule The Federal Register published a final revised Clean Water Rule: â€œDefinition of Waters of the United Statesâ€ on 29 June 2015 (FR Vol 30, No. 124; pages 37054 â€“ 37127) that defines the scope of waters protected under the Federal Clean Water Act (CWA). The effective date of this rule was to be 28 August 2015. This rule provided a definition of Waters of the United States (WOTUS) that differed from that in the 2 December 2008 joint memorandum from EPA and USACE following the U.S. Supreme Courtâ€™s Decision in Rapanos v. United States & Carabell v. United States (USACE, 2008). Implementation of the 2015 Clean Water Rule was stayed by the U.S. 6th Circuit Court of Appeals on October 9, 2015-- a little over one month after that ruleâ€™s effective dateâ€”until recently. On February 28, 2017 President Trump issued Executive Order 13778 ordering EPA and USACE to review and or rescind the 2015 Clean Water Rule. This was followed by the Suspension Rule (6 February 2018), which delayed implementation of the 2015 Clean Water Rule to 6 February 2020 and provided time for a two-part rulemaking process to revise the definition of WOTUS. But in August 2018, Judge David C. Norton of the U.S. District Court for South Carolina issued an injunction claiming that the Suspension Rule was in violation of the Administrative Procedures Act. This injunction effectively reinstated the 2015 Clean Water Rule in 26 states, including Washington. Therefore, at the time of writing this report, the 2015 Clean Water Rule is currently in use within the State of Washington to describe waters that are to be regulated under Section 404 of the CWA. The 2015 Clean Water Rule generally describes waters that are WOTUS directly, that are waters of the US because they are impoundments or tributaries to WOTUS, and that are waters of the US because they are adjacent to or because they have a significant nexus to WOTUS. The Rule also describes waters that are not WOTUS. These general descriptions are summarized in the paragraphs that follow. The 2015 Clean Water Rule describes the following waters where Section 404 jurisdiction would be asserted and considered waters of the United States (WOTUS): (1) traditional navigable waters: all waters which are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce, included all waters which are subject to the ebb and flow of the tide, (2) interstate waters (including interstate wetlands), and (3) the territorial seas. The following additional waters may be considered WOTUS in Washington State: (4) all impoundments of traditional navigable waters, interstate waters, and territorial seas, (5) all â€œtributariesâ€ to a traditional navigable water, interstate water, or territorial sea, (6) all waters â€œadjacentâ€ to waters within categories 1 through 5 above, (7) all waters located within the 100-year floodplain of a traditional navigable water, interstate water, or territorial sea, and (8) all waters within 4,000 feet of the high tide line or ordinary high water of a WOTUS that are determined on a case-specific basis to have a â€œsignificant nexusâ€ to a traditional navigable water, interstate water, or territorial sea. 1778.0001 Centennial Park 17 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Edgecomb Creek is not a traditional navigable water (TNW), but is a tributary to the Puget Sound, which is identified as a TNW (USACE, 2008). Therefore, Edgecomb Creek is likely considered a WOTUS through criterion 5 above. Wetland A is located within 4,000 feet from the Edgecomb Creek channel, and would likely be considered a WOTUS through a significant nexus test (criterion 8 above), subject to Section 404 jurisdiction. In addition, the 2015 Clean Water Rule identifies fifteen waters or areas where jurisdiction will NOT be asserted, even if they otherwise meet the description of WOTUS: (1) waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of the CWA, (2) prior converted cropland, (3) ephemeral ditches that are not a relocated tributary or excavated tributary, (4) ditches with intermittent flow that are not a relocated tributary, excavated in a tributary, and that do not drain wetlands, (5) ditches that do not flow, directly or indirectly, into a traditional navigable water, interstate water, or territorial sea, (6) artificially irrigated areas that would revert to dry land should irrigation cease, (7) artificially constructed lakes and ponds, created in dry land, such as farm and stock watering ponds, irrigation ponds, settling basins, fields flooded for rice growing, log cleaning ponds, or cooling ponds, (8) artificial reflecting pools or swimming pools created in dry land, (9) small ornamental waters created in dry land, (10) water-filled depressions created in dry land incidental to mining or construction activity, including pits excavated for obtaining fill, sand, or gravel that fill with water, (11) erosional features, including gullies, rills, and other ephemeral features that do not meet the definition of tributary, non-wetland swales, and lawfully constructed grassed waterways, (12) puddles, (13) groundwater, including groundwater drained through subsurface drainage systems, (14) stormwater control features constructed to convey, treat, or store stormwater that are created in dry land, and (15) wastewater recycling structures constructed in dry land; detention and retention basins built for wastewater recycling; groundwater recharge basins; percolation ponds built for wastewater recycling; and water distributary structures built for wastewater recycling. All three of the identified ditches onsite appear to have been excavated from dry land. The ditches are within a soil map unit classified as hydric soil, however test pits adjacent to the ditches and data plots throughout the site do not meet for hydric soils. The ditches meet criteria 3 and 5 listed above and therefore appear to not be subject to regulation under Section 404 of the CWA. 6.2.3 Permitting Requirements Wetland development approvals, including local review, Federal permits, and State certification, are necessary in order for the proposed project to proceed. The project does not propose any fill within a wetland or its buffer. The project does propose the filling of the relict stream channel in order to construct a portion of the multi-family dwellings. The required fill within the channel accounts for 210 linear feet of the relict channel, confirmation of coverage under a simplified CWA Section 404 Nationwide Permit (NWP) should be the limit of State and Federal permitting efforts under Sections 401 and 404 of the CWA. Final determination of NWP coverage is at the discretion of the USACE, and other minor NWPs, such as NWPs 29 and 39, may be also be used to authorize this project. Therefore, careful consideration of regional permit conditions transpired during the planning process in order to satisfy the requirements for a variety of NWPs. Given that the stream channel has already been relocated offsite and appropriate mitigation has been completed in the form of channel creation, stream 1778.0001 Centennial Park 18 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 restoration, and riparian habitat restoration, no further mitigation or restoration should be required for the proposed filling activity. 1778.0001 Centennial Park 19 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 7. Buffer Enhancement Plan The following sections present the proposed buffer enhancement plan to address the low functioning buffer of onsite Wetland A. The proposed plan closely adheres to local Critical Areas regulations specified in AMC Chapter 20.93. 7.1 Purpose and Need The purpose of the proposed project is to provide additional housing units, park, open space, and retail area the City of Arlington. The project does not propose the loss of any wetland area or habitat; however, the existing buffer is degraded by non-native invasive species including reed canarygrass and Himalayan blackberry. Per AMC 20.93.830(b)(3), in order to utilize the standard buffer width, the buffer must be planted with appropriate native vegetation to ensure adequate buffer functionality. As a result, a buffer enhancement plan is proposed. 7.2 Description of Impacts and Mitigation Strategy The project was carefully designed in order to avoid impacts to critical areas to the greatest extent feasible, and no direct impacts to the wetland nor its buffer are proposed. However, the existing buffer is degraded by the presence of non-native invasive species, and therefore does not provide adequate buffer functions. The proposed buffer enhancement actions will improve ecological functions and value by providing additional functions according to the needs of the site and watershed and providing an overall improvement to wetland and buffer function. Removing wetland buffer degradations such as non-native, invasive vegetation and replacing with native plantings within the buffer will restore the habitat functions and critical area protection provided by the site and improve hydrology and quality of water leaving the project site. A diverse herbaceous layer will be established to provide browse, cover, and nesting for small mammals, which in turn provide prey for raptors and other small mammals. The proposed enhancement plan will provide a net gain in function and improved protection to the wetlands from the proposed development. The wetland buffer enhancements proposed will include, but may not be limited to, the following recommendations: â€¢ Enhance a total of 18,660 square feet of onsite buffer area for Wetland A. â€¢ Pre-treat invasive plants with a Washington Department of Agriculture approved herbicide. After pre-treatment, grub to remove the invasive plants and replant all cleared areas with native trees, shrubs, and ground covers listed in Appendix C; Pre-treatment of the invasive plants should occur a minimum of two weeks prior to removal; â€¢ Replant the enhancement area with native trees, shrubs, and groundcovers listed in Appendix C, or substitutes approved by the responsible wetland scientist, to help retain soils, filter stormwater, and increase biodiversity; â€¢ An approved native seed mix will be used to seed the disturbed mitigation areas after planting; â€¢ Maintain and control invasive plants annually, at a minimum, or more frequently if necessary. Maintenance to reduce the growth and spread of invasive plants is not restricted to chemical applications but may include hand removal, if warranted; â€¢ Provide dry-season irrigation as necessary to ensure native plant survival; 1778.0001 Centennial Park 20 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 â€¢ Direct exterior lights away from the wetlands wherever possible; and â€¢ Place all activities that generate excessive noise (e.g., generators and air conditioning equipment) away from the wetlands where feasible. 7.3 Approach and Best Management Practices The proposed wetland buffer enhancement plan is intended to provide increased wetland protections by maintenance and improvement of wetland buffer functions. Enhancement of the wetland buffer should occur concurrently with the proposed development construction. TESC measures will be implemented that consists of high-visibility fencing (HVF) installed around native vegetation along the modified perimeter of the buffer, silt fencing between the graded areas and undisturbed buffer, plastic sheeting on stockpiled materials, and seeding of disturbed soils. These TESC measures should be installed prior to the start of development or enhancement actions and actively managed for the duration of the project. All equipment staging and materials stockpiles should be kept out of the identified wetland and associated buffer, and the area will need to be kept free of spills and/or hazardous materials. All fill material and road surfacing will be sourced from upland areas onsite or from approved suppliers and will be free of pollutants and hazardous materials. Construction materials along with all construction waste and debris will be effectively managed and stockpiled on paved surfaces and kept free of the remaining wetland and buffer areas. Following completion of the development, the entire site will be cleaned and detail graded using hand tools wherever necessary, and TESC measures will be removed. 7.4 Goals, Objectives, and Performance Standards The goals and objectives for the proposed wetland buffer enhancement actions will be based on providing additional habitat and protection for the onsite wetland and providing supplementary water quality and hydrological functions. Wetland buffer enhancement actions are capable of improving habitat function for the wetland over time by establishment of a dense vegetation barrier between the project and the critical area. The goals and performance standards for the enhancement actions are outlined below. Goal 1 â€“ Improve and protect wetland buffer functions. Objective 1 â€“ Establish areas of native trees, shrubs, and emergent plants to create diverse horizontal and vertical vegetation structure and additional wildlife habitat. Performance Standard 1 â€“ By the end of Year 5, the non-compensatory buffer enhancement area will have at least 2 species of native trees, 3 species of native shrubs; native volunteer species will be included in the count. To be considered, the native species must make up at least 5 percent of the vegetation class. Performance Standard 2 â€“ Minimum plant survivorship will be at 100 percent of installed plants at the end of Year 1 (replacement of lost plants allowed), 85 percent at the end of Year 2, and 75 percent at the end of Year 3. 1778.0001 Centennial Park 21 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Performance Standard 3 â€“ Non-native invasive plants will not make up more than 20 percent total cover in any growing season during the monitoring period following Year 1. 7.5 Plant Materials and Installation 7.5.1 Plant Materials All plant materials to be used for the enhancement actions will be nursery grown stock from a reputable, local source. Only native species are to be used; no hybrids or cultivars will be allowed. Plant material provided will be typical of their species or variety; if not cuttings they will exhibit normal, densely-developed branches and vigorous, fibrous root systems. Plants will be sound, healthy, vigorous plants free from defects, and all forms of disease and infestation. Container stock shall have been grown in its delivery container for not less than six months but not more than two years. Plants shall not exhibit rootbound conditions. Under no circumstances shall container stock be handled by their trunks, stems, or tops. Seed mixture used for hand or hydroseeding shall contain fresh, clean, and new crop seed mixed by an approved method. The mixture is specified in the plan set. All plant material shall be inspected by a qualified Wetland Scientist upon delivery. Plant material not conforming to the specifications below will be rejected and replaced by the planting contractor. Rejected plant materials shall be immediately removed from the site. Fertilizer will be in the form of Agroform plant tabs or an approved like form. Mulch will consist of sterile wheat straw for seeded areas (if necessary) and clean recycled wood chips approximately Â½- inch to 1-inch in size and Â½-inch thick for woody plants. The mulch material may be sourced from non-invasive woody materials sourced from the land clearing activities. 7.5.2 Plant Scheduling, Species, Density, and Location Plant installation should occur as close to conclusion of clearing and grading activities as possible to limit erosion and limit the temporal loss of function provided by the wetland and buffer. All planting should occur between September 1 and May 1 to ensure plants do not dry out after installation, or temporary irrigation measures may be necessary. All planting will be installed according to the procedures detailed in the following subsections and as outlined on the site plans in Appendix C. 7.5.3 Quality Control for Planting Plan All plant material shall be inspected by the Wetland Scientist upon delivery. Plant material not conforming to the specifications above will be rejected and replaced by the planting contractor. Rejected plant materials shall be immediately removed from the site. Under no circumstances shall container stock be handled by their trunks, stems, or tops. The landscape contractor shall provide the Wetland Scientist with documentation of plant material that includes the supplying nursery contact information, location of genetic source, plant species, plant quantities, and plant sizes. 7.5.4 Product Handling, Delivery, and Storage All seed should be delivered in original, unopened, and undamaged containers showing weight, analysis, and name of manufacturer. This material should be stored in a manner to prevent wetting 1778.0001 Centennial Park 22 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 and deterioration. All precautions customary in good trade practice shall be taken in preparing plants for moving. Workmanship that fails to meet industry standards will be rejected. Plants will be packed, transported, and handled with care to ensure protection against injury and from drying out. If plants cannot be planted immediately upon delivery they should be protected with soil, wet peat moss, or in a manner acceptable to the Wetland Scientist. Plants and mulch not installed immediately upon delivery shall be secured on the site to prevent theft or tampering. No plant shall be bound with rope or wire in a manner that could damage or break the branches. Plants transported on open vehicles should be secured with a protective covering to prevent windburn. 7.5.5 Preparation and Installation of Plant Materials The planting contractor shall verify the location of all elements of the wetland buffer enhancement plan with the responsible Wetland Scientist prior to installation. The responsible Wetland Scientist reserves the right to adjust the locations of landscape elements during the installation period as appropriate. If obstructions are encountered that are not shown on the drawings, planting operations will cease until alternate plant locations have been selected by and/or approved by the Wetland Scientist. Circular plant pits with vertical sides will be excavated for all container stock. The pits should be at least 1.5 times the width of the rootball, and the depth of the pit should accommodate the entire root system. Please refer to planting detail in Appendix C. Broken roots should be pruned with a sharp instrument and rootballs should be thoroughly soaked prior to installation. Set plant material upright in the planting pit to proper grade and alignment. Water plants thoroughly midway through backfilling and add Agroform tablets. Water pits again upon completion of backfilling. No filling should occur around trunks or stems. Do not use frozen or muddy mixtures for backfilling. Form a ring of soil around the edge of each planting pit to retain water and install a 4- to 6-inch layer of mulch around the base of each container plant. 7.5.6 Temporary Irrigation Specifications While the native species selected for the wetland buffer enhancement actions are hardy and typically thrive in northwest conditions and the proposed actions are planned in areas with sufficient hydroperiods for the species selected, some individual plants might perish due to dry conditions. Therefore, irrigation or regular watering may be provided as necessary for the duration of the first two growing seasons, two times per week while the native plantings become established. If used, irrigation will be discontinued after two growing seasons. Frequency and amount of irrigation will be dependent upon climatic conditions and may require more or less frequency watering than two times per week. 7.5.7 Invasive Plant Control and Removal Invasive species to be removed include Himalayan blackberry, reed canarygrass, and all listed noxious weeds. Non-native invasive plant species are well-established within a portion of Wetland A and the onsite wetland buffer and require an effective control strategy. To ensure non-native invasive species do not expand following the wetland buffer enhancement actions, non-native invasive plants within the entire mitigation area will be pretreated with a root-killing herbicide approved for use in aquatic sites (i.e. Rodeo) a minimum of two weeks prior to being cleared and grubbed from the enhancement area. A second application is strongly recommended. The pre-treatment with herbicide should occur prior to all planned enhancement actions, and spot treatment of surviving non-native invasive vegetation should be performed again each fall prior to senescence for a minimum of five years. 1778.0001 Centennial Park 23 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 7.6 Maintenance & Monitoring Plan The conceptual maintenance and monitoring plan is described below in accordance with AMC 20.93.850. The Applicant is committed to compliance with the wetland buffer enhancement plan and overall success of the project. As such, the Applicant will continue to maintain the project, keeping the site free from of non-native invasive vegetation, trash, and yard waste. The wetland buffer enhancement plan will require continued monitoring and maintenance to ensure the actions are successful. Therefore, the project site will be monitored for a period of five years with formal inspections by a qualified Wetland Scientist. The site will be monitored for a minimum of five years with monitoring plans submitted for zero, one, two, three and five years. Closeout assessment will also be conducted in Year 5 to ensure the adequate enhancement areas were established. Monitoring will consist of percent cover measurements at permanent monitoring stations, walk- through surveys to identify invasive species presence and dead or dying enhancement plantings, photographs taken at fixed photo points, wildlife observations, and general qualitative habitat and stream function observations. To determine percent cover, observed vegetation will be identified and recorded by species and an estimate of areal cover of dominant species within each sampling plots. Circular sample plots, approximately 30 feet in diameter (706 square feet), are centered at each monitoring station. The sample plots encompass the specified wetland buffer areas and terminate at the observed wetland boundary. Trees and shrubs within each 30-foot diameter monitoring plot are then recorded to species and areal cover. Herbaceous vegetation is sampled from a 10-foot diameter (78.5 square feet) within each monitoring plot, established at the same location as the center of each tree and shrub sample plot. Herbaceous vegetation within each monitoring plot is then recorded to species and includes an estimate of percent areal cover. A list of observed tree, shrub, and herbaceous species including percent areal cover of each species and wetland indicator status is included within the monitoring report. Plant survivorship of planted stock will be estimate at as-built/time zero and for each monitoring year by counting the number of dead/dying and live planted stock in each monitoring plot. Percent survival will equate to the number plants alive divided by the total number plants counted, multiplied by 100. 7.7 Reporting Following each monitoring event, a monitoring report detailing the current ecological status of the wetland buffer enhancement actions, measurement of performance standards, and management recommendations will be prepared and submitted to the City within 90 days of each monitoring event to ensure full compliance with the wetland buffer enhancement plan, performance standards, and conditions of approval. 7.8 Contingency Plan If monitoring results indicate that performance standards are not being met, it may be necessary to implement all or part of the contingency plan. Careful attention to maintenance is essential in ensuring that problems do not arise. Should any portion of the site fail to meet the success criteria, a contingency plan will be developed and implemented with regulatory approval. Such plans are adaptive and should be prepared on a case-by-case basis to reflect the failed mitigation characteristics. 1778.0001 Centennial Park 24 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Contingency plans can include additional plant installation, erosion control, and plant substitutions including type, size, and location. Contingency/maintenance activities may include, but are not limited to: 1. Replacing plants lost to vandalism, drought, or disease, as necessary; 2. Replacing any plant species with a 20 percent or greater mortality rate after two growing seasons with the same species or native species of similar form and function; 3. Irrigating the mitigation areas only as necessary during dry weather if plants appear to be too dry, with a minimal quantity of water; 4. Reseeding and/or repair of wetland buffer areas as necessary if erosion or sedimentation occurs; 5. Spot treat non-native invasive plant species; and 6. Removing all trash or undesirable debris from the stream and buffer areas as necessary. 1778.0001 Centennial Park 25 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 8. Closure The findings and conclusions documented in this report have been prepared for specific application to this project. They have been developed in a manner consistent with that level of care and skill normally exercised by members of the environmental science profession currently practicing under similar conditions in the area. Our work was also performed in accordance with the terms and conditions set forth in our proposal. The conclusions and recommendations presented in this report are professional opinions based on an interpretation of information currently available to us and are made within the operation scope, budget, and schedule of this project. No warranty, expressed or implied, is made. In addition, changes in government codes, regulations, or laws may occur. Due to such changes, our observations and conclusions applicable to this project may need to be revised wholly or in part. All wetland boundaries identified by SVC are based on conditions present at the time of the site inspection and considered preliminary until the flagged wetland boundaries are validated by the jurisdictional agencies. Validation of the wetland boundaries by the regulating agency provides a certification, usually written, that the wetland boundaries verified are the boundaries that will be regulated by the agencies until a specific date or until the regulations are modified. Only the regulating agencies can provide this certification. As wetlands are dynamic communities affected by both natural and human activities, changes in wetland boundaries may be expected; therefore, wetland delineations cannot remain valid for an indefinite period of time. Local agencies typically recognize the validity of wetland delineations for a period of five years after completion of a wetland delineation report. Development activities on a site five years after the completion of this wetland delineation report may require revision of the wetland delineation. In addition, changes in government codes, regulations, or laws may occur. Due of such changes, our observations and conclusions applicable to this site may need to be revised wholly or in part. 1778.0001 Centennial Park 26 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Chapter 9. References Arlington Municipal Code (AMC). 2018. Chapter 20.93 Environmentally Critical Areas - https://library.municode.com/wa/arlington/codes/code_of_ordinances?nodeId=TIT20ZO_C H20.93ENCRAR. Current through October 16, 2018. Brinson, M. M. 1993. A hydrogeomorphic classification for wetlands, Technical Report WRP-DE-4. U.S. Army Corps of Engineer Waterways Experiment Station. Vicksburg, MS. Cowardin, L.M., V. Carter, F. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Fish & Wildlife Service. Washington D.C. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Granger, T., T. Hruby, A. McMillan, D. Peters, J. Rubey, D. Sheldon, S. Stanley, and E. Stockdale. 2005. Wetlands in Washington State - Volume 2: Guidance for Protecting and Managing Wetlands. Washington State Department of Ecology. Publication #05-06-008. Olympia, Washington. April, 2005. Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Hruby, T. 2014. Washington State Wetland Rating System for Western Washington â€“ Revised. Washington State Department of Ecology Publication # 14-06-29. Debose A., and Klungland, M.W. 1983. Soil Survey of Snohomish County Area, Washington. United States Department of Agriculture, Soil Conservation Service in cooperation with Washington State Department of Natural Resources, and Washington State University, Agriculture Research Center. Washington, D.C. Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X Munsellï£¨ Color, 2000. Munsellï£¨ soil color charts. New Windsor, New York. Munsellï£¨ Color, 2000. Munsellï£¨ Soil Color Charts. New Windsor, New York. Nationwide Environmental Title Research. 2019. Historic Aerials by NETROnline. Website: https://www.historicaerials.com/viewer Natural Resources Conservation Service (NRCS). 1995. Hydric Soils of Washington. U.S. Department of Agriculture. Washington D.C. Sheldon, D., T. Hruby, P. Johnson, K. Harper, A. McMillan, T. Granger, S. Stanley, and E. Stockdale. 2005. Wetlands in Washington State - Volume 1: A Synthesis of the Science. Washington State Department of Ecology. Publication #05-06-006. Olympia, Washington. March, 2005. 1778.0001 Centennial Park 27 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Shramek, Joe. 2017. Washington Department of Natural Resources. 2017 Protocol Stream Survey Process and Water Level and Streamflow Forecast memorandum. February 28, 2017. Website: https://www.dnr.wa.gov/publications/fp_wt_streamsurvey_20170228.pdf?vwlt7i. United States Army Corps of Engineers (USACE). 2008. Navigable Waters of the U.S. in Washington State. Revised December 31, 2008. Website: https://www.nws.usace.army.mil/Portals/27/docs/regulatory/permit%20guidebook/Navigable _Waters_of_the_US_in_WA_State.pdf USACE. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Ver 2.0), ed. J.S. Wakeley, Lichvar, R.W. and Noble, C.V. ERDC/EL TR- 10-3. Vicksburg, MSS: U.S. Army Engineer Research and Development Center. United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS). 2018. Field Indicators of Hydric Soils in the United States, Version 8.2. L.M. Vasilas, G.W. Hurt, and J.F. Berkowitz (eds.). USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils Washington Administrative Code (WAC). 2006. Section 222-16-030 and -031 â€“ Water Typing System. Website: https://app.leg.wa.gov/WAC/default.aspx?cite=222-16-030. Effective date December 16, 2006. Washington Administrative Code (WAC). 2006. Section 222-16-030 and -031 â€“ Water Typing System. Website: https://app.leg.wa.gov/WAC/default.aspx?cite=222-16-030. Effective date December 16, 2006. Washington Department of Transportation (WSDOT). 2016. WSDOT USFWS No Effect Project Form. Submitted March 3, 2016. WSDOT. 2016. WSDOT NOAA Short Project Form. Submitted March 3, 2016. Washington Department of Natural Resources (DNR). 2002. Forest Practice Board Manual, Section 13 â€“ Guidelines for Determining Fish Use for the Purpose of Typing Waters. DNR. 2018. Forest Practices Water Typing. Website: https://www.dnr.wa.gov/forest-practices-water- typing. 1778.0001 Centennial Park 28 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix A â€” Methods and Tools Table A-1. Methods and tools used to prepare the report. Parameter Method or Tool Website Reference Wetland USACE 1987 http://el.erdc.usace.army.mi Environmental Laboratory. 1987. Corps of Delineation Wetland l/elpubs/pdf/wlman87.pdf Engineers Wetlands Delineation Manual. Delineation Technical Report Y-87-1, US Army Engineer Manual Waterways Experiment Station, Vicksburg, Mississippi. Regional http://www.usace.army.mil U.S. Army Corps of Engineers. 2010. Supplement to the /CECW/Documents/cecw Regional Supplement to the Corps of Engineers Core of Engineers o/reg/west_mt_finalsupp.p Wetland Delineation Manual: Western Wetland df Mountains, Valleys, and Coast Region (Version Delineation 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Manual: Western Noble. ERDC/EL TR-10-3. Vicksburg, MS: Mountains, U.S. Army Engineer Research and Valleys, and Coast Development Center. Region (Version 2.0) Wetland USFWS / http://www.fws.gov/wetlan Cowardin, L. M., V. Carter, F. C. Golet, E. T. Classification Cowardin ds/Documents/Classificatio LaRoe. 1979. Classification of wetlands and Classification n-of-Wetlands-and- deepwater habitats of the United States. System Deepwater-Habitats-of-the- Government Printing Office, Washington, D.C. United-States.pdf https://www.fgdc.gov/stan Federal Geographic Data Committee. 2013. dards/projects/wetlands/nv Classification of Wetlands and Deepwater cs-2013 Habitats of the United States. FGDC-STD-004- 2013. Second Edition. Wetlands Subcommittee, Federal Geographic Data Committee and U.S. Fish and Wildlife Service, Washington, DC. Hydrogeomorphic http://el.erdc.usace.army.mi Brinson, M. M. (1993). â€œA hydrogeomorphic Classification l/wetlands/pdfs/wrpde4.pd classification for wetlands,â€ Technical Report (HGM) System f WRP-DE-4, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. Wetland Washington State https://fortress.wa.gov/ecy Hruby, T. (2014). Washington State Wetland Rating Wetland Rating /publications/documents/1 Rating System for Western Washington: 2014 Update. System 406029.pdf (Publication #14-06-029). Olympia, WA: Washington Department of Ecology. Wetland 2016 National https://www.fws.gov/wetla Lichvar, R.W., D.L. Banks, W.N. Kirchner, and Indicator Wetland Plant List nds/documents/National- N.C. Melvin. 2016. The National Wetland Plant Status Wetland-Plant-List-2016- List: 2016 wetland ratings. Phytoneuron 2016-30: Wetland-Ratings.pdf 1-17. Published 28 April 2016. ISSN 2153 733X Stream Department of http://www.stage.dnr.wa.go Washington Administrative Code (WAC) 222- Classification Natural Resources v/forestpractices/watertypi 16-030. DNR Water typing system. (DNR) Water ng/ Typing System 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Parameter Method or Tool Website Reference Stream Determining the https://fortress.wa.gov/ecy Anderson, P.S., S. Meyer, P. Olson, and E. Delineation OHW /publications/documents/1 Stockdale. 2016. Determining the Ordinary 606029.pdf High Water Mark for Shoreline Management Act Compliance in Washington State. Publication No. 16-06-029. Final Review Draft. Shorelands and Environmental Assistance Program, Washington State Department of Ecology. Olympia, Washington. Plant Names USDA Plant http://plants.usda.gov/ Website Database Flora of the Pacific http://www.washington.ed Hitchcock, C.L. and A. Cronquist. 1973. Flora Northwest u/uwpress/search/books/ of the Pacific Northwest. University of HITFLC.html Washington Press. Seattle, Washington. Soils Data NRCS Soil Survey http://websoilsurvey.nrcs.u Website GIS data based upon: sda.gov/app/ Debose A., and Klungland, M.W. 1983. Soil Survey of Snohomish County Area, Washington. United States Department of Agriculture, Soil Conservation Service in cooperation with Washington State Department of Natural Resources, and Washington State University, Agriculture Research Center. Washington, D.C. Snohomish http://www.wa.nrcs.usda.g Natural Resources Conservation Service. County Hydric ov/technical/soils/hydric_li 1983. Hydric Soils List: Snohomish County, Soils List sts/hydsoil-wa-653.pdf Washington. U.S. Department of Agriculture. Washington D.C. Soil Color Charts Munsellï£¨ Color. 2000. Munsellï£¨ Soil Color Charts. New Windsor, New York. Field Indicators of United States Department of Agriculture, Hydric Soils in the Natural Resources Conservation Service. 2018. https://www.nrcs.usda.gov U.S. Version 8.2 Field Indicators of Hydric Soils in the United /Internet/FSE_DOCUME States, Version 8.2. L.M. Vasilas, G.W. Hurt, NTS/nrcs142p2_053171.pd and J.F. Berkowitz (eds.). USDA, NRCS, in f cooperation with the National Technical Committee for Hydric Soils Threatened Washington http://data- Washington Natural Heritage Program and Natural Heritage wadnr.opendata.arcgis.com/ (Data published 07/19/17). Endangered, Endangered Program datasets/wnhp-current- threatened, and sensitive plants of Washington. Species element-occurrences Washington State Department of Natural Resources, Washington Natural Heritage Program, Olympia, WA Washington http://wdfw.wa.gov/hab/p Priority Habitats and Species (PHS) Priority Habitats hspage.htm Program (Data requested 06/13/18). Map of and Species priority habitats and species in project vicinity. Washington Department of Fish and Wildlife (WDFW). NOAA fisheries http://www.nwr.noaa.gov/ Website species list and ESA-Salmon- maps Listings/Salmon- Populations/Index.cfm 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Parameter Method or Tool Website Reference and http://www.nmfs.noaa.gov /pr/species/ USFWS species http://www.fws.gov/westw Website lists by County afwo/se/SE_List/endanger ed_Species.asp Species of WDFW GIS Data http://wdfw.wa.gov/mappi Website Local ng/salmonscape/ Importance Arlington https://library.municode.co AMC Chapter 20.93 Environmentally Critical Municipal Code m/wa/arlington/codes/cod Areas Report e_of_ordinances?nodeId=T Preparation IT20ZO_CH20.93ENCRA R Historic NETROnline https://www.historicaerials. Website Aerials com/viewer 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B â€” Background Information This appendix includes a USGS Topographic Map (B1); USFWS NWI map (B2); NRCS soil survey map (B3); Snohomish County wetland inventory (B4); WDFW PHS map (B5); WDFW SalmonScape map (B6); DNR stream typing map (B7); 1954 Historic Aerial Photograph (B8); and 1969 Historic Aerial Photograph (B9). 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B1 â€“ USGS Topographic Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B2 â€“ USFWS NWI Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B3 â€“ NRCS Soil Survey Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B4 â€“ Snohomish County Wetland Inventory Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B5 â€“ WDFW PHS Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B6 â€“ WDFW SalmonScape Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B7 â€“ DNR Steam Typing Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B8 â€“ 1954 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B9 â€“ 1969 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix B9 â€“ 1990 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Appendix C â€” Site Plans 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 LOCATION: THE SW 1 4 OF SECTION 23, TOWNSHIP 31 N, RANGE 05 E, W.M. SNOHOMISH COUNTY PARCEL NUMBER: 31052300300800 LAT 48Â°9'10.36" N LONG -122Â°8'20.89" W VICINITY MAP ADJACENT OWNERSHIP SITE VICINITY HIGHLAND VIEW DR 1 2 3 4 5 6 7 8 SITE SITE 71ST PL S 172ND STREET NE / SR 531 SOURCE: ESRI, OSM, USGS SOURCE: SNOHOMISH COUNTY GIS ADJACENT OWNERS: 6. WILLDEN, LESLIE W PROJECT: CENTENNIAL PARK 1. PETTERSSON, RAGNAR 7. CLIMACO, WILLIAM PURPOSE: RESIDENTIAL DEVELOPMENT / REFERENCE #: 2. PETTERSSON, RAGNAR 8. ATONEMENT FREE OPEN SPACE IN: CITY OF ARLINGTON 3. TODD, BRIAN D LUTHERAN CHURCH - NEAR: 4. HARDCASTLE, RONDA A ARLINGTON SITE ADDRESS: 67TH AVE NE AND COUNTY: SNOHOMISH 5. MARTIN, NICHOLAS A & 172ND ST NE/HWY 531 APPLICANT: KILBY, RYAN WOLD, ALEXIS A ARLINGTON, WA 98223 SHEET: 1 of 5 DATE: 2/11/2019 PROPERTY BOUNDARY PRELIMINARY DP3U INFORMATION ONLY NOT FOR CONSTRUCTION DP6U DP4W SOUNDVIEW CONSULTANTS LLC ASSUMES DP5U NO LIABILITY OR RESPONSIBILITY FOR CONSTRUCTION, IMPROVEMENTS, OR ESTIMATES BASED ON THIS PLAN SET DP7U WETLAND A CATEGORY IV ~21,823 SF STD. 40' BUFFER 67TH AVE NE67TH AVE. N.E. DP2U PROPERTY BOUNDARY RELICT STREAM CHANNEL DP1U FISH PASSAGE DP8U BARRIER CULVERT DP9U APROX. LOCATION OF RELOCATED STREAM V STANDARD 100' BUFFER BLOCKED V 172ND ST NE CULVERT V V 172ND ST. N.E. V APROX. LOCATION OF RELOCATED V V STREAM CHANNEL (OFF-SITE) V LIKELY LOCATION OF TYPE F WITH 100' BUFFER V RELOCATED STREAM V V V V V INTERRUPTED BUFFER V V EXISTING CONDITIONS PROJECT: CENTENNIAL PARK V REFERENCE# APPLICANT: KILBY, RYAN LOCATION: 67TH AVE NE AND 172ND ST NE ARLINGTON, WA 98223 SHEET: of 52 DATE: 2/11/2019 ASSUMED WSDOT EASMENT LINE PROPERTY BOUNDARY PRELIMINARY OPEN SPACE 6,274SF INFORMATION ONLY WETLAND A NOT FOR CONSTRUCTION CARPORT CATEGORY IV ADA RAMP TYPE A.1 (1) STUDIO BUILDING D TYPE E.2 BUILDING E BUILDING M SOUNDVIEW CONSULTANTS LLC ASSUMES TYPE E.1 (2)2BR LOFT (3)1BR LOFT (4)1BR (2) 2BR (1) 1BR LOFT (4) 1BR NO LIABILITY OR RESPONSIBILITY FOR (2) STUDIO Centennial Trail (2) 3BR LOFT (4) 2BR LOFT (2) 2BR POCKET PARK MINI-PARK D 1,872SF CONSTRUCTION, IMPROVEMENTS, OR 3 3 ESTIMATES BASED ON THIS PLAN SET 40FT WETLAND BUFFER ZONE 25% OF BUFFER ZONE (18,948SF) TO COUNT TOWARDS OPEN SPACE PER AMC 20.52.030 (B)(6) 3 1 4,737SF 4 PLAYGROUND MINI-PARK C 5 4,969SF WETLAND BUFFER ENHANCEMENT TYPE E.2 BUILDING N PLANTING ~18,632 SF (SEE PLANT 8 ADA RAMP TYPE E.1 (2) STUDIO (2) 3BR LOFT (4) 2BR LOFT (2) 2BR SCHEDULE ON NEXT SHEET) TYPE A.1 BUILDING F 5 (1) STUDIO BUILDING C 1 (2) 2BR (1) 1BR LOFT (4) 1BR (2)2BR LOFT (3)1BR LOFT (4)1BR BUILDING L WETLAND A TYPE D.1 (3)2BR (9)1BR CATEGORY IV BUILDING K TYPE C.1 TYPE E.1 (2) STUDIO BUILDING O ~21,823 SF WITH 11 11 Centennial Trail (2)3BR (4)2BR (12)1BR COMMUNITY GREEN TYPE E.1 MINI-PARK A (2) 2BR (1) 1BR LOFT (4) 1BR (2) STUDIO 8,780SF STD. 40' BUFFER 67TH AVE. N.E. BUILDING G 67TH AVE NE 6 11 ADA RAMP (2) 2BR (1) 1BR LOFT (4) 1BR TYPE B.2 BUILDING B TYPE E.1 (2) 2BR (1) 1BR LOFT (4) 1BR (2) STUDIO COMMUNITY GARDEN OPEN SPACE 7,820SF BUILDING J (2)2BR LOFT (4)1BR LOFT (4)1BR (2) STUDIO OPEN SPACE 1,036SF 67th Ave NE CARPORT TYPE E.1 (2) STUDIO BUILDING P APROX. LOCATION OF 100' BUFFER 3 PROPERTY BOUNDARY (2) 2BR (1) 1BR LOFT (4) 1BR CARPORT OF RELOCATED STREAM CHANNEL 3 OPEN SPACE 5% SLOPE UP MINI-PARK B 1,182SF 6,555SF POTENTIAL LOCATION OF ADA RAMP BUILDING H BUILDING I 3 COMM. AREA TYPE C.1 POOL (2)3BR (4)2BR (12)1BR (3)1BR OVER TRASH RELOCATED STREAM COMMS Centennial Trail INTERRUPTED BUFFER 12 BUILDING A 12 BUILDING Q TYPE B.1 2 (8)1BR (1) STUDIO (2)2BR OVER RETAIL BUILDING S 2 (4)2BR LOFT (2)1BR LOFT (4)1BR (2) STUDIO BUILDING R BLDG TYPE B.1 TYPE B.1 (1) ADA UNIT GROUND LEVEL (4)2BR LOFT (2)1BR LOFT (4)1BR (2) STUDIO (4)2BR LOFT (2)1BR LOFT (4)1BR (2) STUDIO RETAIL 7,665SF ASSUMED WSDOT V EASMENT LINE V FUTURE APROX. LOCATION OF RELOCATED WSDOT 172nd St NE V V ROADWORKS 172ND ST NE 172ND ST. N.E. STREAM CHANNEL FUTURE BUS V STOP PROPOSED PROJECT PROJECT: CENTENNIAL PARK REFERENCE# APPLICANT: KILBY, RYAN LOCATION: 67TH AVE NE AND 172ND ST NE ARLINGTON, WA 98223 SHEET: of 53 DATE: 2/11/2019 PRELIMINARY NATIVE PLANT SCHEDULE PROJECT: CENTENNIAL PARK INFORMATION ONLY NOT FOR CONSTRUCTION REFERENCE# APPLICANT: KILBY, RYAN SOUNDVIEW CONSULTANTS LLC ASSUMES LOCATION: 67TH AVE NE AND 172ND ST NE NO LIABILITY OR RESPONSIBILITY FOR CONSTRUCTION, IMPROVEMENTS, OR ARLINGTON, WA 98223 ESTIMATES BASED ON THIS PLAN SET SHEET: of 54 DATE: 2/11/2019 TREE PLANTING DETAIL SHRUB PLANTING DETAIL NOT TO SCALE NOT TO SCALE LOCATOR LATH (IF SPECIFIED) LOCATOR LATH (IF SPECIFIED) SET TOP OF ROOT MASS / ROOT BALL FLUSH SET TOP OF ROOT MASS / ROOT BALL FLUSH WITH FINISH GRADE OR SLIGHTLY ABOVE WITH FINISH GRADE OR SLIGHTLY ABOVE 2 to 3 INCH LAYER OF MULCH - KEEP MULCH 2 to 3 INCH LAYER OF MULCH - KEEP MULCH MIN. 3" AWAY FROM TRUNK OF TREE MIN. 3" AWAY FROM TRUNK OF SHRUB NOTES: NOTES: 1. PLANT SHRUBS OF THE SAME SPECIES IN 1. PLANT TREES AS INDICATED ON PLAN. AVOID GROUPS OF 3 to 9 AS APPROPRIATE, OR AS SHOWN INSTALLING PLANTS IN STRAIGHT LINES. ON PLAN. AVOID INSTALLING PLANTS IN STRAIGHT 2. EXCAVATE PIT TO FULL DEPTH OF ROOT MASS LINES TO ACHIEVE A NATURAL-LOOKING LAYOUT. AND 2 X ROOT MASS DIAMETER. SPREAD ROOTS TO 2. EXCAVATE PIT TO FULL DEPTH OF ROOT MASS FULL WIDTH OF CANOPY. SCARIFY SIDES OF PIT. AND 2 X ROOT MASS DIAMETER. SPREAD ROOTS TO 3. MIDWAY THROUGH PLANTING ADD AGROFORM FULL WIDTH OF CANOPY. SCARIFY SIDES OF PIT. TABLET AND WATER THOROUGHLY. 3. MIDWAY THROUGH PLANTING ADD AGROFORM 4. BACKFILL TO BE COMPACTED USING WATER ONLY. TABLET AND WATER THOROUGHLY. 5. WATER IMMEDIATELY AFTER INSTALLATION. 4. BACKFILL TO BE COMPACTED USING WATER ONLY. 5. WATER IMMEDIATELY AFTER INSTALLATION. UNDISTURBED OR UNDISTURBED OR COMPACTED SUBGRADE COMPACTED SUBGRADE LIVE STAKE PLANTING DETAIL NOT TO SCALE NOTES: 1. LIVE STAKES TO BE 1 TO 2 INCH DIAMETER 24 TO 32 INCHES LENGTH. 2. USE 1/2 INCH DIAMETER REBAR OR ROCK BAR TO MAKE PILOT HOLE. 3. INSTALL LIVE STAKES TAPER END DOWN WITH BUDS POINTED UP. 4. MINUMUM TWO BUDS ABOVE GRADE. PRELIMINARY 5. SET LIVE STAKES WITH DEAD-BLOW HAMMER. INFORMATION ONLY 6. WATER IMMEDIATELY AFTER INSTALLATION. STORAGE OF LIVE STAKES NOT FOR CONSTRUCTION ALL WOODY PLANT CUTTINGS COLLECTED MORE THAN 12 HR PRIOR TO INSTALLATION, SOUNDVIEW CONSULTANTS LLC ASSUMES MUST BE CAREFULLY BOUND, SECURED, NO LIABILITY OR RESPONSIBILITY FOR AND STORED OUT OF DIRECT SUNLIGHT CONSTRUCTION, IMPROVEMENTS, OR AND SUBMERGED IN CLEAN FRESH WATER ESTIMATES BASED ON THIS PLAN SET FOR A PERIOD OF UP TO TWO WEEKS. OUTDOOR TEMPERATURES MUST BE LESS THAN 50 DEGREES F AND TEMPERATURE PLANTING DETAILS PROJECT: CENTENNIAL PARK INDOORS AND IN STORAGE CONTAINERS MUST BE BETWEEN 34 AND 50 DEGREES F. IF THE LIVE STAKES CANNOT BE INSTALLED REFERENCE# DURING THE DORMANT SEASON, CUT DURING THE DORMANT SEASON AND HOLD APPLICANT: KILBY, RYAN 70-80 % OF STAKE INSTALLED BELOW GRADE IN COLD STORAGE AT TEMPERATURES LOCATION: 67TH AVE NE AND 172ND ST NE BETWEEN 33 AND 39 DEGREES F FOR UP TO ARLINGTON, WA 98223 2 MONTHS. SHEET: of 55 DATE: 2/11/2019 Appendix D â€” Data Forms 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-1 Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 2 Subregion (LRR): A2 Lat: 48.15232781 Long: -122.13997093 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria were present; only hydrophytic vegetation was observed. Data collected in the southwest corner of the site. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 2 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 2 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 95 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 95 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 5 Remarks: Hydrophytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 13 10YR 2/1 100 - - - - SiLo Gravelly silt loam 13 - 18 10YR 2/2 95 10YR 3/6 5 CS M SaLo Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria observed; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-2 Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): None Slope (%): 0 Subregion (LRR): A2 Lat: 48.15270064 Long: -122.13943818 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria observed, only hydrophytic vegetation observed. Data collected in the western portion of the site in a field. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 3 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 67% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 1 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 1 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Plantago lanceolata 60 Yes FACU Column Totals: (A) (B) 2. Agrostis capillaris 30 Yes FAC 3. Ranunculus repens 10 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydrophytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-2 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 15 10YR 2/2 100 - - - - SaLo Gravelly sandy loam 15 - 17 10YR 2/2 95 10YR 3/6 5 CS M SaLo Gravelly 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. Roots observed from 0 to 6 inches. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrology criteria observed. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-3 Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Convex Slope (%): 15 Subregion (LRR): A2 Lat: 48.15356159 Long: -122.13967423 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria observed, only hydrophytic vegetation observed. Data collected in the northern portion of the site. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 1 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-3 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 8 10YR 3/1 100 - - - - SiLo Silt loam 8 - 18 10YR 3/2 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria observed; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/18 Applicant/Owner: Williams Investment State: WA Sampling Point: DP-4W Investigator(s): Matthew Murphy, Erin Harker Section, Township, Range: 23 / 31N / 5E Landform (hillslope, terrace, etc.): ? Local relief (concave, convex, none): ? Slope (%): ? Subregion (LRR): A2 Lat: 48.153484 Long: -122.13886242 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: All three wetland criteria observed. Data collected WHERE?? Description? VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 0 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 0% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydrophytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-4W Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-16 10YR 2/1 100 SiLo Silt loam 16-18 10YR 2/1 100 Organic Muck 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________N/A Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): 14 Saturation Present? Yes No Depth (inches): 6 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic criteria observed through primary indicator A3. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-5 Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 2 Subregion (LRR): A2 Lat: 48.15338214 Long: -122.13902839 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria observed, only hydrophytic vegetation observed. Data collected west of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 1 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-5 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 11 10YR 2/1 100 - - - - SaLo Sandy loam 11 - 16 10YR 3/1 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria observed; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-6 Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Convex Slope (%): 20 Subregion (LRR): A2 Lat: 48.1535363 Long: -122.13832539 Datum: WGS 84 Soil Map Unit Name: Everett gravell sandy loam, 8 to 15 percent slopes NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria observed, only hydrophytic vegetation observed. Data collected east of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 20 Yes FAC That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 20 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-6 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 16 10YR 2/1 100 - - - - LoSa Loamy sand 16 - 18 10YR 3/1 100 - - - - LoSa 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria observed; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-7 Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.15328337 Long: -122.13887554 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria observed, only hydrophytic vegetation observed. Data collected southwest of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 10 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 10 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-7 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 11 10YR 2/1 100 - - - - SiLo Silt loam 11 - 16 10YR 3/2 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): 17 Saturation Present? Yes No Depth (inches): 16 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria observed; only one secondary indicator (D5) was met indirectly. Groundwater table is present but begins too low to be meet any indicator. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 11/4/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-8 Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152198 Long: -122.13838064 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria observed, only hydrophytic vegetation and hydrology observed. Data collected north of the relict stream channel. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Thuja plicata 20 Yes FAC That Are OBL, FACW, or FAC: 5 (A) 2. Alnus rubra 15 Yes FAC Total Number of Dominant 3. Species Across All Strata: 5 (B) 4. Percent of Dominant Species 35 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 40 Yes FAC Prevalence Index worksheet: 2. Sambucus racemosa 10 No FACU Total % Cover of: Multiply by: 3. Lonicera involucrata 10 No FAC OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 60 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 40 Yes FACW Column Totals: (A) (B) 2. Urtica dioica 15 Yes FAC 3. Equisetum arvense 10 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 65 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 35 Remarks: Hydropytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-8 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 6 10YR 3/2 100 - - - - SiLo Silt loam 6-13 10YR 3/2 100 - - - - SiLo Gravelly silt loam 13-15 5Y 4/1 98 10YR 3/6 2 C M SiLo Silt loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): 10 Saturation Present? Yes No Depth (inches): 8 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrology criteria observed through primary indicators A2 and A3; however, 3.24-inches of precipitation was recorded 2 weeks prior to the site investigation which likely caused areas a false positive hydrology indicator US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 11/4/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-9 Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152120 Long: -122.13842892 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria observed, only hydrophytic vegetation observed. Data collected north of the relict stream channel. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 40 Yes FAC That Are OBL, FACW, or FAC: 4 (A) 2. Thuja plicata 15 Yes FAC Total Number of Dominant 3. Species Across All Strata: 5 (B) 4. Percent of Dominant Species 55 = Total Cover That Are OBL, FACW, or FAC: 80% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 30 Yes FAC Prevalence Index worksheet: 2. Rubus spectabilis 15 Yes FAC Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 45 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Moss sp. 5 NI Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 5 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hedera helix 10 Yes FACU Hydrophytic 2. Vegetation 10 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 95 Remarks: Hydropytic vegetation criteria observed through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-9 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 14 10YR 3/1 100 - - - - SaLo Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________ Hydric Soil Present? Yes No Remarks: No hydric soil indicators observed. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): Water Table Present? Yes No Depth (inches): 14 Saturation Present? Yes No Depth (inches): 13 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Wetland hydrology not observed. 3.24-inches of precipitation was recorded 2 weeks prior to the site investigation. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 Appendix E â€” Wetland Rating Forms 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 Wetland name or number ______ A RATING SUMMARY â€“ Western Washington Name of wetland (or ID #): _________________________________ Date of site visit: _____ A 10/12/18 Rated by____________________________ Trained by Ecology?__ Yes ___No Date of training______ Erin Harker, Jon Pickett âœ” HGM Class used for rating_________________ Depressional Wetland has multiple HGM classes?___Y ____Nâœ” NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map ______________________________________ OVERALL WETLAND CATEGORY ____ IV (based on functions___ or special characteristics___)âœ” 1. Category of wetland based on FUNCTIONS _______Category I â€“ Total score = 23 - 27 Score for each _______Category II â€“ Total score = 20 - 22 function based on three _______Category III â€“ Total score = 16 - 19 ratings _______Category IV â€“ Total score = 9 - 15 (order of ratings is not important) FUNCTION Improving Hydrologic Habitat Water Quality 9 = H,H,H Circle the appropriate ratings 8 = H,H,M Site Potential L L L 7 = H,H,L Landscape Potential L L L 7 = H,M,M Value H L L TOTAL 6 = H,M,L 6 = M,M,M Score Based on 5 3 3 11 5 = H,L,L Ratings 5 = M,M,L 4 = M,L,L 3 = L,L,L 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above N/A Wetland Rating System for Western WA: 2014 Update 1 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______A Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 Hydroperiods D 1.4, H 1.2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 Map of the contributing basin D 4.3, D 5.3 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Ponded depressions R 1.1 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 Width of unit vs. width of stream (can be added to another figure) R 4.1 Map of the contributing basin R 2.2, R 2.3, R 5.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 Plant cover of dense, rigid trees, shrubs, and herbaceous plants S 4.1 (can be added to figure above) Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 Wetland Rating System for Western WA: 2014 Update 2 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______A HGM Classification of Wetlands in Western Washington For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides except during floods? NO â€“ go to 2 YES â€“ the wetland class is Tidal Fringe â€“ go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO â€“ Saltwater Tidal Fringe (Estuarine) YES â€“ Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. NO â€“ go to 3 YES â€“ The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ___The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ___At least 30% of the open water area is deeper than 6.6 ft (2 m). NO â€“ go to 4 YES â€“ The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ____The wetland is on a slope (slope can be very gradual), ____The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ____The water leaves the wetland without being impounded. NO â€“ go to 5 YES â€“ The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ____The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ____The overbank flooding occurs at least once every 2 years. Wetland Rating System for Western WA: 2014 Update 3 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______A NO â€“ go to 6 YES â€“ The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. NO â€“ go to 7 YES â€“ The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. NO â€“ go to 8 YES â€“ The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit HGM class to being rated use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream Depressional within boundary of depression Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other Treat as class of freshwater wetland ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating System for Western WA: 2014 Update 4 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A DEPRESSIONAL AND FLATS WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality D 1.0. Does the site have the potential to improve water quality? D 1.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet). points = 3 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet. 1 points = 2 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 1 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch. points = 1 D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions).Yes = 4 No = 0 0 D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or Forested Cowardin classes): Wetland has persistent, ungrazed, plants > 95% of area points = 5 Wetland has persistent, ungrazed, plants > Â½ of area points = 3 3 Wetland has persistent, ungrazed plants > 1/ of area points = 1 10 Wetland has persistent, ungrazed plants <1/ of area points = 0 10 D 1.4. Characteristics of seasonal ponding or inundation: This is the area that is ponded for at least 2 months. See description in manual. Area seasonally ponded is > Â½ total area of wetland points = 4 0 Area seasonally ponded is > Â¼ total area of wetland points = 2 Area seasonally ponded is < Â¼ total area of wetland points = 0 Total for D 1 Add the points in the boxes above 4 Rating of Site Potential If score is: 12-16 = H 6-11 = M 0-5 = L Record the rating on the first page D 2.0. Does the landscape have the potential to support the water quality function of the site? D 2.1. Does the wetland unit receive stormwater discharges? Yes = 1 No = 0 0 D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 0 D 2.3. Are there septic systems within 250 ft of the wetland? Yes = 1 No = 0 0 D 2.4. Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1-D 2.3? 0 Source_______________ Yes = 1 No = 0 Total for D 2 Add the points in the boxes above 0 Rating of Landscape Potential If score is: 3 or 4 = H 1 or 2 = M 0 = L Record the rating on the first page D 3.0. Is the water quality improvement provided by the site valuable to society? D 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 1 303(d) list? Yes = 1 No = 0 D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list? Yes = 1 No = 0 1 D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer YES 2 if there is a TMDL for the basin in which the unit is found)? Yes = 2 No = 0 Total for D 3 Add the points in the boxes above 4 Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page NOTES and FIELD OBSERVATIONS: Wetland Rating System for Western WA: 2014 Update 5 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A DEPRESSIONAL AND FLATS WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation D 4.0. Does the site have the potential to reduce flooding and erosion? D 4.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression with no surface water leaving it (no outlet) points = 4 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outletpoints = 2 0 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0 D 4.2. Depth of storage during wet periods: Estimate the height of ponding above the bottom of the outlet. For wetlands with no outlet, measure from the surface of permanent water or if dry, the deepest part. Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 0 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 The wetland is a â€œheadwaterâ€ wetland points = 3 Wetland is flat but has small depressions on the surface that trap water points = 1 Marks of ponding less than 0.5 ft (6 in) points = 0 D 4.3. Contribution of the wetland to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of the unit points = 5 3 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 times the area of the unit points = 0 Entire wetland is in the Flats class points = 5 Total for D 4 Add the points in the boxes above 3 Rating of Site Potential If score is: 12-16 = H 6-11 = M 0-5 = L Record the rating on the first page D 5.0. Does the landscape have the potential to support hydrologic functions of the site? D 5.1. Does the wetland receive stormwater discharges? Yes = 1 No = 0 0 D 5.2. Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes = 1 No = 0 0 D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at 0 >1 residence/ac, urban, commercial, agriculture, etc.)? Yes = 1 No = 0 Total for D 5 Add the points in the boxes above 0 Rating of Landscape Potential If score is: 3 = H 1 or 2 = M 0 = L Record the rating on the first page D 6.0. Are the hydrologic functions provided by the site valuable to society? D 6.1. The unit is in a landscape that has flooding problems. Choose the description that best matches conditions around the wetland unit being rated. Do not add points. Choose the highest score if more than one condition is met. The wetland captures surface water that would otherwise flow down-gradient into areas where flooding has damaged human or natural resources (e.g., houses or salmon redds): ï‚· Flooding occurs in a sub-basin that is immediately down-gradient of unit. points = 2 ï‚· Surface flooding problems are in a sub-basin farther down-gradient. points = 1 0 Flooding from groundwater is an issue in the sub-basin. points = 1 The existing or potential outflow from the wetland is so constrained by human or natural conditions that the water stored by the wetland cannot reach areas that flood. Explain why __________________Wetland discharges into ditches and stormwater featurespoints = 0 There are no problems with flooding downstream of the wetland. points = 0 D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? 0 Yes = 2 No = 0 Total for D 6 Add the points in the boxes above 0 Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page Wetland Rating System for Western WA: 2014 Update 6 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______A These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - Indicators that site functions to provide important habitat H 1.0. Does the site have the potential to provide habitat? H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be combined for each class to meet the threshold of Â¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ____Aquatic bed 4 structures or more: points = 4 ____Emergent 3 structures: points = 2 ____Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points = 1 1 ____Forested (areas where trees have > 30% cover) 1 structure: points = 0 If the unit has a Forested class, check if: ____The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the Forested polygon H 1.2. Hydroperiods Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or Â¼ ac to count (see text for descriptions of hydroperiods). ____Permanently flooded or inundated 4 or more types present: points = 3 ____Seasonally flooded or inundated 3 types present: points = 2 ____Occasionally flooded or inundated 2 types present: points = 1 1 ____Saturated only 1 type present: points = 0 ____Permanently flowing stream or river in, or adjacent to, the wetland ____Seasonally flowing stream in, or adjacent to, the wetland ____Lake Fringe wetland 2 points ____Freshwater tidal wetland 2 points H 1.3. Richness of plant species Count the number of plant species in the wetland that cover at least 10 ft2. Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle 1 If you counted: > 19 species points = 2 5 - 19 species points = 1 < 5 species points = 0 H 1.4. Interspersion of habitats Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none. If you have four or more plant classes or three classes and open water, the rating is always high. 0 None = 0 points Low = 1 point Moderate = 2 points All three diagrams in this row are HIGH = 3points Wetland Rating System for Western WA: 2014 Update 13 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ____Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ____Standing snags (dbh > 4 in) within the wetland ____Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) 1 ____Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ____At least Â¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ____Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) Total for H 1 Add the points in the boxes above 4 Rating of Site Potential If score is: 15-18 = H 7-14 = M 0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: 0.88 % undisturbed habitat + [(% moderate and low intensity land uses) 3.10 /2] = _______%2.43 If total accessible habitat is: > 1/ (33.3%) of 1 km Polygon points = 3 3 0 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: 2.51 % undisturbed habitat + [(% moderate and low intensity land uses) 34.89 /2] = _______%19.955 Undisturbed habitat > 50% of Polygon points = 3 1 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) -2 â‰¤ 50% of 1 km Polygon is high intensity points = 0 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: 4-6 = H 1-3 = M < 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ï‚¾ It has 3 or more priority habitats within 100 m (see next page) ï‚¾ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ï‚¾ It is mapped as a location for an individual WDFW priority species 0 ï‚¾ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ï‚¾ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 Rating of Value If score is: 2 = H 1 = M 0 = L Record the rating on the first page Wetland Rating System for Western WA: 2014 Update 14 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ï‚¾ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ï‚¾ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ï‚¾ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ï‚¾ Old-growth/Mature forests: Old-growth west of Cascade crest â€“ Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests â€“ Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ï‚¾ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 â€“ see web link above). ï‚¾ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ï‚¾ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 â€“ see web link above). ï‚¾ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ï‚¾ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report â€“ see web link on previous page). ï‚¾ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ï‚¾ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ï‚¾ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ï‚¾ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland Rating System for Western WA: 2014 Update 15 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Category Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ï‚¾ The dominant water regime is tidal, ï‚¾ Vegetated, and ï‚¾ With a salinity greater than 0.5 ppt Yes â€“Go to SC 1.1 No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? Yes = Category I No - Go to SC 1.2 SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ï‚¾ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ï‚¾ At least Â¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ï‚¾ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Yes = Category I No = Category II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? Yes â€“ Go to SC 2.2 No â€“ Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? Yes = Category I No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf Yes â€“ Contact WNHP/WDNR and go to SC 2.4 No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? Yes = Category I No = Not a WHCV SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? Yes â€“ Go to SC 3.3 No â€“ Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? Yes â€“ Go to SC 3.3 No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? Yes = Is a Category I bog No â€“ Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? Yes = Is a Category I bog No = Is not a bog Wetland Rating System for Western WA: 2014 Update 16 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlifeâ€™s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ï‚¾ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ï‚¾ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). Yes = Category I No = Not a forested wetland for this section SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ï‚¾ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ï‚¾ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) Yes â€“ Go to SC 5.1 No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ï‚¾ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ï‚¾ At least Â¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ï‚¾ The wetland is larger than 1/ ac (4350 ft2) 10 Yes = Category I No = Category II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ï‚¾ Long Beach Peninsula: Lands west of SR 103 ï‚¾ Grayland-Westport: Lands west of SR 105 ï‚¾ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 Yes â€“ Go to SC 6.1 No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? Yes = Category I No â€“ Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? Yes = Category II No â€“ Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? Yes = Category III No = Category IV Category of wetland based on Special Characteristics If you answered No for all types, enter â€œNot Applicableâ€ on Summary Form Wetland Rating System for Western WA: 2014 Update 17 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______A This page left blank intentionally Wetland Rating System for Western WA: 2014 Update 18 Rating Form â€“ Effective January 1, 2015 Appendix F â€” Wetland Rating Maps 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 CENTENNIAL PARK - WETLAND RATING MAP Cowardin Map 330' Boundary Emergent Â¢ Scrub-Shrub Site Boundary 0 75 150 300 Feet DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 125 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 51 CENTENNIAL PARK - WETLAND RATING MAP Hydroperiod Map 150' Boundary Saturated Â¢ Seasonally Flooded Site Boundary 0 37.5 75 150 Feet DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 75 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 52 CENTENNIAL PARK - WETLAND RATING MAP Contributing Basin Map Ã Ã Ã Site Boundary Ã Ã Ã Ã Ã Ã Ã Wetland Ã Ã Ã Ã Contributing Basin Â¢ Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Old Stream Channel 0 125 250 500Feet (Relocated South of 172nd Street) D.4.0 D.4.3 Area of Contributing Basin (SF) 1,211,949 Area of Wetland A (SF) 23,130 Percent of Wetland A within Contributing Basin 1.908% D.5.0 D.5.3 Area of Contributing Basin 1,211,949 Area of Intensive Human Land Uses 30,464 Percent of Intensive Human Land Use within Contributing Basin 3% DATE:1/3/2019 CENTENNIAL PARK JOB:1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview ConsultantsLLC ARLINGTON, WA 98223 BY:DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 250 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 53 CENTENNIAL PARK - WETLAND RATING MAP Habitat Map Ã Ã Ã Ã Ã Ã Ã Ã Site Boundary Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Wetland Ã Ã Ã Ã High Intensity Â¢ Moderate and Low Intensity Relatively Undisturbed Ã Ã Ã Ã Ã Ã Ã Ã 0 650 1,300 2,600 Feet H.2.0 Wetland A H.2.1 Abutting Undisturbed Habitat 0.88% Abutting Moderate & Low Intensity Land Uses 3.10% Accessible Habitat 2.43% H.2.2 Undisturbed Habitat 2.51% Moderate & Low Intensity Land Uses 34.89% Undisturbed Habitat in 1 KM Polygon 19.96% H.2.3 High Intensity Land Use in 1 KM Polygon 62.60% DATE:1/3/2019 CENTENNIAL PARK JOB:1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview ConsultantsLLC ARLINGTON, WA 98223 BY:DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 1,300 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 54 CENTENNIAL PARK - WETLAND RATING MAP SITE Â¢ 303d Map Sub Basin Category 4A Assessed Waters Category 5 Assessed Waters DNR Hydrology 0 1 2 4 Miles LISTING ID CATEGORY PARAMETER MEDIA WATERBODY WATERBODY TYPE 47512 5 Dissolved Oxygen Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 45266 4A Bacteria Water QUILCEDA CREEK, W.F. Rivers/Streams 7299 5 Dissolved Oxygen Water QUILCEDA CREEK, W.F. Rivers/Streams 47492 5 Dissolved Oxygen Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK) Rivers/Streams 46286 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7307 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 71215 5 pH Water QUILCEDA CREEK, W.F. Rivers/Streams 71213 5 pH Water QUILCEDA CREEK, W.F. Rivers/Streams 7306 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7304 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 71212 5 pH Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 71221 5 pH Water UNNAMED DITCH (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 7305 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7302 5 Dissolved Oxygen Water QUILCEDA CREEK Rivers/Streams 47506 5 Dissolved Oxygen Water UNNAMED DITCH (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 7298 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 47502 5 Dissolved Oxygen Water QUILCEDA CREEK, W.F. Rivers/Streams 9806 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 74184 4A Bacteria Water QUILCEDA CREEK, W.F. Rivers/Streams DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 2 mi Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 55 Appendix G â€” Edgecomb Creek Relocation Documentation 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 WSDOT USFW No Effect Project Notification Form Note: The proper version of this form must be submitted to either the National Marine Fisheries Service or the U.S. Fish and Wildlife Service (or both). See http://wwwi.wsdot.wa.gov/Environment/FishWildlife/ for submittal procedures. Project Name: SR531/Edgecomb Creek - Fish Passage Submittal Date: March 3, 2016 Work Order: XL4697 WIN: A53175A Project Location: State Route 531, Mile Post 8.60 to 8.80 Geographical Coordinates: 48.15190300 / -122.14037700 to 48.15249500 / -122.13623100 Indicate Township / Range / Section Township 31 North, Range 5 East, Sections 23 and 26. County: Snohomish Region: Northwest Project Biologist: Beth Toberer, tobereb@wsdot.wa.gov, 360-757-5996 Reviewing Biologist: Mark E. Bakeman, bakemam@wsdot.wa.gov, 360-705-7494 Signed 3/3/16 Signed March 3, 2016 @ 8:09 PM Form Completed Date: February 5, 2016 WRIA: 7: Snohomish 6th Field Hydrologic Unit Code (HUC) Name Quilceda Creek Page 1 of 40 6th Field HUC number 171100110204 Site Visit Date: January 28, 2016 Date of Early Coordination: February 4, 2016 Explain and summarize Early Coordination activities with the Services: A pre-BA meeting was held for the project on April 16, 2015 and it was generally agreed by USFWS/NMFS it could be covered under the former Programmatic BA that WSDOT had with USFWS and NMFS. NMFS sent an email on May 18, 2015 that the project qualified for Fast Track. The project finally received right of entries for specialty groups in January 2016; therefore, early coordination was continued via an email sent on 2/4/2016 to request use of the existing Programmatic and update USFWS/NMFS on any design features. Updated design plans were emailed to USFWS/NMFS on 2/18/2016. For USFWS jurisdiction species and critical habitats, this is a: No Effect Does the project meet the conditions of the programmatic biological assessment? Ã¾ Yes Â¨ No Is this a reference biological assessment? Â¨ Yes Ã¾ No Is this an after the fact consultation for the USFWS? Â¨ Yes Ã¾ No Will this project be submitted Fast Track for the NMFS? Ã¾ Yes Â¨ No Will this project be submitted Fast Track for the USFWS? Â¨ Yes Ã¾ No Effect determinations for USFWS species and critical habitats that can occur in the project action area: No Effect: Marbled Murrelet Northern Spotted Owl Bull Trout Streaked Horned Lark Canada Lynx Gray Wolf Grizzly Bear Western Yellow-billed Cuckoo Oregon Spotted Frog Page 2 of 40 Check all project activities that apply (for both NMFS and USFWS projects) Upland vegetation removal & management Riparian and Wetland Vegetation Removal and Management Work Area Exclusion and Dewatering Heavy equipment operation Cut and fill operations Fish Handling Other (explain in Project Description) Check all project activities that apply (USFWS projects only) Fish Passage Environmental Retrofit and Enhancement Project action area: The project action area includes all terrestrial and aquatic habitats that will be affected by the project during construction of the proposed action. The proposed action includes constructing the new stream channel, screening and blocking barrier 99058, plugging and abandoning barrier 99059, diverting the stream into the new section of channel, and turning over the existing channel to the City of Arlington for stormwater treatment. The action area includes a one-quarter of a mile radius from the proposed stream work for terrestrial habitats. The action area includes the existing stream channel in the project footprint, the new connection point upstream of Barrier 99059, the new connection point downstream of Barrier 99058, and 220 feet downstream of the stream channel connection point up to the existing culvert under 67th Avenue NE. Aquatic habitats in the action area include wetland areas south of the existing and proposed stream location where WSDOT will do weed control (reed canarygrass) to enhance existing aquatic habitats. The project will improve access for salmon to 1.77 miles of upstream habitat, after removing the fish barriers; therefore, upstream aquatic areas are included in the action area. Attach map and photographs: Page 3 of 40 Page 4 of 40 Page 5 of 40 Page 6 of 40 Page 7 of 40 Page 8 of 40 Page 9 of 40 Project Description: The project is located on and adjacent to SR 531 where Edgecomb Creek (Middle Fork Quilceda Creek) flows underneath SR 531 through two fish passage barrier culverts at Mileposts 8.65 (Barrier 99058) and 8.71 (99059) (action area map). The proposed project will correct both fish barriers by eliminating the barriers and moving a 330 foot section of the stream to the south side of SR 531. Buildings and structural fill material will be removed in the pathway of the new stream and the new stream channel will be built with natural meanders to connect Edgecomb Creek upstream and downstream habitats. A fish passable driveway box culvert measuring 16 foot wide by 20 feet long will be installed south of SR 531 to provide stream passage under a private driveway near the eastern stream connection point. The new channel will provide 600 feet of new stream length, south of SR 531 to connect upstream and downstream habitats in Edgecomb Creek and eliminate the fish barriers and broken weirs in the existing channel. Stream bed gravel will be placed in the new channel and large woody material (LWM) will be installed along outer meander bends to provide habitat in the new stream channel for multiple life history phases of salmon and trout. The new stream channel will replace fill material and buildings and will be planted with native vegetation, thus it will enhance water quality and quantity functions for overland flow of runoff that flows into Edgecomb Creek. Stormwater from SR 531 will continue to be treated by the vegetated filter strip located north of SR 531. The project includes minimal work below the existing OHWM, because the new stream channel will be built first during construction. Following construction of the new channel, fish will be excluded from the existing channel and moved downstream of the project area. Flow will then be diverted into the new channel. The remnant channel and dysfunctional weirs will be turned over the City of Arlington to be used as a storm water treatment facility. Barrier 99059 will be plugged and abandoned and barrier 99058 will be screened and blocked with structural rock and streambank material to allow drainage from the abandoned stream channel that will continue to drain stormwater runoff. The project will be designed and constructed in accordance with Integrated Stream Habitat Protection Guidelines. Non-galvanized wire will be used to secure LWM structures specified in the proposed design to provide habitat for juvenile salmon. Small sections of structural rock may be needed next to SR 531 to prevent roadway scour, but any structural fill material will be placed away from the OHWM and buried in the streambank. Structural material will be covered with layers of gravel and will not be exposed to fish in the creek. All structural material buried in the streambank will be planted with native woody species to enhance stability and provide riparian function near the stream. The project will not add new impervious surface to SR 531 and will not include roadway improvements. Traffic control will be necessary to perform stream relocation construction safely and effectively. The project will be constructed during daytime hours; minor night work may only be used if the project requires minor traffic control near SR 531 and private residences for safety. Project Equipment List Excavator, backhoe, grading machine, earth mover, dump truck, hauling truck. Indicate equipment that will be working below the ordinary high water mark (OHWM) Excavator arm will work below the existing OHWM. Earth mover and excavator will work below the proposed OHWM. Is this an emergency project? Â¨ Yes Ã¾ No Page 10 of 40 Does the project have any USFWS listed species or critical habitats on the county list? If no, then no effect for USFWS. Ã¾ Yes Â¨ No Does the project have any USFWS listed species or critical habitats in the mapped project area on IPaC (you can use an unofficial list if you think you have a no effect project)? If no, then no effect. Fill in the remaining required fields and the minimization measures and print the USFWS no effect form. If yes, continue with the rest of the form. Ã¾ Yes Â¨ No Does the project have sensitive habitats (within 200 feet of wetlands or surface waters) where staging, refueling, or other activities should be restricted? Ã¾ Yes Â¨ No Indicate mileposts within project area where restrictions apply. Entire project area between Milepost 8.65 and 8.71 has streams and wetlands, which have been delineated for avoidance and minimization planning. Will the project have construction equipment operating within the wetted channel of any waterbody? Ã¾ Yes Â¨ No Will detours be used? Â¨ Yes Ã¾ No Will the project include work at night? Â¨ Yes Ã¾ No Will artificial lights be used over or adjacent to an aquatic area? Ã¾ Yes Â¨ No Will blasting occur? Â¨ Yes Ã¾ No Will impact pile driving occur? Â¨ Yes Ã¾ No Will piles be removed on the project? Â¨ Yes Ã¾ No Is the project for slide abatement and repair? Â¨ Yes Ã¾ No Will cutting or filling occur? Ã¾ Yes Â¨ No Indicate cut area (excavated area) above the ordinary high water mark (OHWM). Area: 14,125 square feet (.324 acres) Indicate cut area (excavated area) below the ordinary high water mark. Area: 0 square feet Page 11 of 40 Indicate fill area below the ordinary high water mark (OHWM) Area: 5,110 square feet (.117 acres) Will cutting or filling occur within 300 ft of a water body that has listed aquatic species or their habitat? Ã¾ Yes Â¨ No Will any soils be exposed? Ã¾ Yes Â¨ No What is the erosion potential? Medium Will bare soils be revegetated or hydroseeded after construction? Ã¾ Yes Â¨ No Describe the proposed methods. Erosion control BMPs may include stabilized construction entrances, straw ground cover, straw wattles, silt fence, compost socks, or erosion control blankets to stabilize soils in the project area. Additional BMPs may be used if deemed more effective for the project site. Project Timing Construction Start Date April 1, 2016 Construction End Date December 31, 2016 Total Working Days 160 Will the project need a Hydraulic Project Approval (HPA) or have an aquatic zone of impact requiring in-water work? Ã¾ Yes Â¨ No Will the project use a WDFW published in-water work window? Ã¾ Yes Â¨ No Begin of in-water work window July 15, 2016 End of in-water work window September 15, 2016 Project Aquatic Habitat Impacts Elevated pollutant delivery (non-sediment)? Â¨ Yes Ã¾ No Page 12 of 40 Will there be elevated sediment/turbidity? Ã¾ Yes Â¨ No Estimate the lineal extent of stream or shoreline that will be exposed to elevated turbidity (ft). 150 Explain The new channel will tie into the existing channel; therefore, minor streambed disturbance is expected within 150 feet downstream of the connection. Any elevated turbidity is expected to be temporary and will comply with the downstream point of water quality compliance during construction. The action area for aquatic habitats was extended downstream up to 220 feet, due to minor changes in hydrology and expected benefits to fish habitat up to 67th Avenue NE. Will riparian habitat functions be altered? Ã¾ Yes Â¨ No Explain The project will remove buildings and fill material in a new area and convert it to stream and riparian area. The new riparian area will be vegetated with native species, will have LWM installed, and will connect to off site wetlands for an additional functional lift of rearing habitat for juvenile salmonids. The existing stream channel and adjacent vegetation north of SR 531 will be abandoned between the two fish barriers and will no longer directly provide riparian function. This vegetation includes non-mature red alder, Pacific willow, and western redcedar trees and shrubs that were planted in 1997 to restore a section of Edgecomb Creek that was impacted by SR 531/67th Avenue intersection improvements. The vegetation is invaded by reed canarygrass and Himalayan blackberry in the vegetation understory reducing existing riparian function. Will there be elevated surface water temperature? Â¨ Yes Ã¾ No Will there be substrate disturbance? Ã¾ Yes Â¨ No Indicate disturbed area if known Area: 5,110 square feet (.117 acres) Explain. An area of stream channel immediately downstream of barrier 991058 will be screened and partially filled to form the streambank of the newly connected channel. An area of stream channel immediately upstream of barrier 991059 will be filled to realign the stream channel to the south away from the road. This area is equal to the proposed fill below the OHWM reported above. The stream substrate area north of SR 531 between the barriers will no longer be used by salmon, and is equal to about 5,425 sq ft. The new channel will provide about 600 ft (9,972 sq ft) of new substrate area to connect upstream and downstream habitats in Edgecomb Creek. Will substrate disturbance mobilize contaminants? Â¨ Yes Ã¾ No Page 13 of 40 Will there be loss of benthic invertebrate habitat and potential food web effects? Ã¾ Yes Â¨ No Indicate area of benthic invertebrate habitat disturbance Area: 10,535 square feet (.242 acres) Explain. Benthic habitat is likely present in areas of streambed to be relocated north of SR 531 (5,425 sq ft). Benthic habitat has been scoured and deposition has occurred in benthic areas by the disfunctional weirs in this area. Areas to be filled near the stream connection points (5,110 sq ft) south of SR 531 will be partially filled with streambank material and planted to provide riparian habitat next to stream bank habitat. Riparian habitat areas will support development of benthic habitat adjacent to the new stream channel south of SR 531. The new channel will create 9972 sq ft of new benthic area and enhance adjacent riparian habitat adjacent to the stream channel. Will there be elevated in-water noise from pile driving? Â¨ Yes Ã¾ No Fish harm or harassment from in-water work or handling? Ã¾ Yes Â¨ No Explain. The new stream channel will be constructed first with plugs in place to isolate it from the existing channel. Fish will need to be removed and excluded from the existing channel before it is abandoned. Fish block nets and fish exclusion will also be needed to isolate any fill areas near the connection points on the south side of SR 531. Will there be effects on fish migration? Ã¾ Yes Â¨ No Will project actions reduce the channel width, or block a shoreline migration use area, and if so, how much of channel/shoreline area (%) is available for fish movement? The project will relocate a 330 foot section (5,425 sq ft) of channel between two culvert fish barriers that has non-functioning weirs that pose additional barriers to fish migration. The project will greatly improve fish migration in the project area for improved access to 1.77 miles of upstream spawning habitat. Although the project will relocate 330 feet of stream channel it will remove fill material, impervious surface, and building structures and replace it with about 600 lineal feet of stream channel (9,972 sq ft)of new streambed south of SR 531. More habitat will be available for juvenile fish due to connection to offsite wetlands flooded by Edgecomb Creek on the south side of SR 531. The proposed stream channel will have wider channel widths, no weirs, and will include LWM to enhance juvenile salmon survival. Moreover, instream barriers will be removed permanently to maintain future fish passage through this area. Will there be impacts to wetlands that have fish habitat? Â¨ Yes Ã¾ No Will there be permanent or temporary fish habitat displacement? Ã¾ Yes Â¨ No Page 14 of 40 Explain. The abandoned channel is considered fish habitat that will be displaced and replaced by the constructed and improved stream channel that connects high quality habitat areas. Will there be altered water quality delivery, such as a change to a stormwater conveyance structure? Â¨ Yes Ã¾ No Will there be streambank/shoreline habitat loss/modification or reduced habitat connectivity? Â¨ Yes Ã¾ No Will natural stream processes and/or floodplains be altered? Â¨ Yes Ã¾ No Will the project have beneficial effects? Ã¾ Yes Â¨ No Explain. Existing stormwater drainage from SR 531 drains north directly to Edgecomb Creek, and this section of the stream will be moved, thus improving water quality for Edgecomb Creek. The project removes two fish barriers and a series of weir barriers in the stream to improve passage. Following relocation, more of the stream will be connected to adjacent wetlands increasing the quantity of rearing habitat available to salmon that spawn in the creek. Edgecomb Creek will have at least 200 additional feet of stream length due to the stream relocation. If project removes a fish barrier, indicate length of fish habitat gain on the stream (feet) 9,365 If project removes a fish barrier, indicate the area of new spawning area gained above the culvert (square feet or acres) Area: .709 acres (30,882 square feet) If project removes a fish barrier, indicate the area of new rearing area gained above the culvert (square feet or acres) Area: 1.19 acres (51,836 square feet) Fish Habitat Improvement As part of the project, check all that apply: Water quality improvements will occur to waters with listed species. Fish barriers will be eliminated. Revegetation of streambanks or riparian areas will occur. Large woody debris or habitat structures will be placed in streams. Fish habitat will be created. Will large woody material (LWM) be removed from the site? Â¨ Yes Ã¾ No Page 15 of 40 Environmental Setting Baseline Conditions. Document general baseline conditions in the action area as they relate to the proposed action and effects. Discuss surrounding land use if appropriate. The project is located primarily within Snohomish County, where land use includes rural roads, residential homes, a church, railroad parcels, Edgecomb Creek, and wetlands. SR 531 demarcates the jurisdictional boundary between the County and City of Arlington. The stream channel to be abandoned is located on City property north of SR 531. City property is zoned for commercial development. Riparian zone is relatively narrow and north of the stream channel historical wetlands have been filled and disturbed to create a developable lot. Describe the vegetation in the project action area: Vegetation in filled and developed areas includes mowed grass, pasture, dandelions, hairy cats ear, and reed canary grass with European birch and Douglas fir trees scattered across the residential lawn. Next to the residental filled parcel an existing wetland and riparian area supports non-mature red alder, Pacific ninebark, salmonberry, reed canarygrass, lady fern, and willows. The stream channel to be abandoned includes a narrow riparian forested zone on either side of the creek non-mature red alder, Pacific willow, and western redcedar trees. North of the Creek, the lot is dominated by pasture grasses, reed canarygrass, and Himalayan blackberry with other unidentified noxious weeds. Habitat in the project action area 35% Riparian, 3% Wetlands, and 62% Developed Do streams, rivers, or other waterbodies occur in the project action area? Ã¾ Yes Â¨ No Stream name 1 in action area and describe spawning gravels, embeddedness, riparian cover, refuge area riffles, etc. Focus on areas where impacts may occur. If the stream is a tributary of a larger stream or river, indicate distance to nearest confluence. Edgecomb Creek in the action area includes the section of the creek that will be relocated to the south side of SR 531. This stream section is a result of a constructed restoration project to improve fish passage upstream of the existing fish barrier under SR 531. Currently, the most upstream log control does not backwater the culvert, and the 2nd from the outlet has an excessive water surface drop of 0.5 meter (WDFW 2013). Weir connections are broken from their original supports and streambanks are scouring around the structures. Spawning in the action area includes abundant adult chum and Coho salmon in the reach immediately downstream of barrier 991059, and less abundant numbers of Coho observed upstream up to the first impassable barrier dam at 940 meters upstream. Chum were not observed upstream of the 0.5 meter water surface drop at the log control in the section of channel to be abandoned, and a Coho was observed drifting in and out of the outlet of barrier 991059 in December 2010. Culvert site 991058 downstream of the weirs has also been determined a partial barrier. Edgecomb Creek has spawning gravels, small and large woody material. The section to be abandoned has scour occurring near weir structures, which likely degrades potential spawning potential. During the site visit in January 2016, WSDOT biologists did not observe any carcasses, but decaying salmon smell was abundant in the stream vicinity. Project Impacts to Streambank, Streambed, and Shoreline Will there be riprap placement in the project area along streambanks or shorelines ? Â¨ Yes Ã¾ No Page 16 of 40 Will work on streambanks or shorelines improve fish habitat? Ã¾ Yes Â¨ No Describe the proposed work: Structural rock may be buried and planted along proposed streambanks that are located next to SR 531, thus it will not be exposed to fish. Stream meanders with large woody material and riparian plantings that connect to wetland habitat will provide habitat for multiple life history phases of salmon. Will the stream bed, lake bed or marine bed be disturbed? Ã¾ Yes Â¨ No What is the area of disturbance? Area: 5,110 square feet (.117 acres) If the project has a net reduced structural in-water footprint, please indicate the reduced area. Area: 413 square feet (.009 acres) Will all materials, such as riprap or gravel, placed within the water be free of rock fines, silt, soil, or other extraneous material? An exception to the presence of fines is permitted if they are required as part of channel bed reconstruction. Ã¾ Yes Â¨ No For fish passage projects with USFWS listed species, does the stream have an incised channel profile (longitudinal profile downstream from culvert is offset below upstream profile by 1 foot or more) Â¨ Yes Ã¾ No For fish passage projects with USFWS listed species, are there incision issues other than a localized scour hole at the outlet of an existing undersized culvert? Â¨ Yes Ã¾ No Pollution Generating Impervious Surface Will the project create new PGIS? Â¨ Yes Ã¾ No Fish Handling Will the project have fish handling? Ã¾ Yes Â¨ No Indicate all that apply Seining Herding Electrofishing Minnow traps Other? Page 17 of 40 Will an HPA be needed? Ã¾ Yes Â¨ No Number of days with in-water work 15 Project Terrestrial Impacts Total permanent vegetation impact area (all vegetation types including riparian) Area: 5,425 square feet (.125 acres) Total temporary vegetation impact area (all vegetation types) Area: 14,125 square feet (.324 acres) Total vegetation impact area (all vegetation types) Area: 19,550 square feet (.449 acres) Will the project have riparian vegetation impacts? Ã¾ Yes Â¨ No Temporary riparian impact area Area: 1,500 square feet (.034 acres) Permanent riparian imapact area Area: 5,425 square feet (.125 acres) Total riparian impact area. Area: 6,925 square feet (.159 acres) Indicate number and species of trees greater than 6 inches to 14 inches dbh that will be removed. Red alder (new stream alignment connections)=10 count Indicate number and species of trees greater than 14 inches dbh that will be removed. Douglas fir-2 count European birch-2 count Red alder-5 count Sitka Spruce-1 count Bigleaf maple-2 Area of on-site riparian restoration Area: 20,000 square feet (.459 acres) Area of off-site riparian restoration Area: 0 square feet Page 18 of 40 USFWS Listed Species/Critical Habitat Impacts & Effect Determinations Only fill out the USFWS species that are on your IPaC list. Leave the others blank. Marbled Murrelet The programmatic will provide formal coverage for marbled murrelet Is the project located in a county where marbled murrelet is on the USFWS species list? Â¨ No Ã¾ Yes After mapping your project in IPaC, was marbled murrelet on the species list returned by IPaC? Ã¾ Yes Â¨ No Is the project located within 70 miles of marine waters? Ã¾ Yes Â¨ No Is the project located within a covered mapped city boundary? Â¨ Yes Ã¾ No Does the project have suitable murrelet habitat either within the action area, or within 0.25 mile of disturbance activities, or 1 mile for blasting? Â¨ Yes Ã¾ No Effect Determination: No Effect Rationale No suitable habitat was identified within 0.25 miles of the project; therefore, marbled murrelets will not be impacted. The project will have no effect on marbled murrelet. Marbled Murrelet Critical Habitat The programmatic will provide formal coverage for marbled murrelet critical habitat. Is the project located within a critical habitat unit? If not, is it within 0.5 mile of suitable habitat that is also within a critical habitat unit? Ã¾ No Â¨ Yes Northern Spotted Owl The programmatic will provide formal coverage for n. spotted owl Is the project located in a county where n. spotted owl is on the USFWS species list? Â¨ No Ã¾ Yes After mapping your project in IPaC, was n. spotted owl on the species list returned by IPaC? Â¨ Yes Ã¾ No Page 19 of 40 Is the project within the Western Washington lowlands province? If so, both disturbance and habitat effects will be informal or no effect, depending on the presence or absence of suitable habitat. Ã¾ Yes Â¨ No Is there potential n. spotted owl nesting/roosting/foraging or dispersal habitat within the action area, or for disturbance effects, within 0.25 mile of the activity, or 1 mile for blasting? Â¨ Yes Ã¾ No Effect Determination: No Effect Rationale The IPAC list from USFWS does not include spotted owl and no habitat is located within 0.25 miles of the project; therefore, this species will not be impacted. The project will have no effect on n. spotted owl. Northern Spotted Owl Critical Habitat The programmatic will provide formal coverage for n. spotted owl critical habitat. Is the project located within a critical habitat unit, or adjacent to critical habitat? Ã¾ No Â¨ Yes Bull Trout The programmatic will provide formal coverage for bull trout Is the project located in a county where bull trout is on the USFWS species list? Â¨ No Ã¾ Yes After mapping your project in IPaC, was bull trout on the species list returned by IPaC? Ã¾ Yes Â¨ No Is there bull trout spawning/rearing, FMO habitat in your project area, or do bull trout have access to your action area through FMO or spawning/rearing habitat? Ã¾ Yes Â¨ No Will juvenile bull trout or eggs be exposed to elevated turbidity levels? Â¨ Yes Ã¾ No Will your project have new PGIS? Â¨ Yes Ã¾ No Will the project include pile removal in marine/estuarine or freshwaters? Â¨ Yes Ã¾ No Will the project have cut and fill activities adjacent to bull trout FMO or spawning/rearing habitat? Â¨ Yes Ã¾ No Page 20 of 40 Will the project affect either streambanks/shorelines or streambeds/lakebeds/marine bottoms in FMO habitat? Â¨ Yes Ã¾ No Will the project affect either streambanks/shorelines or streambeds/lakebeds/marine bottoms in spawning/rearing habitat? Â¨ Yes Ã¾ No Will there be streambank/shoreline hardening from placement of rock, rip-rap, concrete or other structural features in any bull trout habitat (FMO and/or spawning/rearing)? Â¨ Yes Ã¾ No Will there be riparian vegetation removal adjacent to bull trout habitat (FMO or spawning/rearing)? Â¨ Yes Ã¾ No Will the project have in-water pile driving in any bull trout habitat? Â¨ Yes Ã¾ No Will the project have fish moving within bull trout habitat? If so, please report all bull trout handled to HQ via email. Â¨ Yes Ã¾ No Effect Determination: No Effect Rationale The nearest bull trout FMO is located 4.5 miles downstream of the project; therefore, no habitat will be affected. The project will have no effect on bull trout. Bull Trout Critical Habitat The programmatic will provide formal coverage for bull trout critical habitat. Is the project located within designated critical habitat? Ã¾ No Â¨ Yes Canada Lynx The programmatic will provide informal coverage for Canada Lynx Is the project located in a county where Canada lynx is on the USFWS species list? These areas are located within the montane areas of the Okanogan highlands or the Cascade Mountains. Â¨ No Ã¾ Yes After mapping your project in IPaC, was Canada lynx on the species list returned by IPaC? Ã¾ Yes Â¨ No Will the project be within the developed limits of a city or town? Â¨ Yes Ã¾ No Is suitable spruce-fir habitat present within the action area? Â¨ Yes Ã¾ No Page 21 of 40 Effect Determination: No Effect Rationale Habitat for this species is not located in the project area or within 0.25 miles of the project. The project will have no effect on Canada lynx. Canada Lynx Critical Habitat The programmatic will provide formal coverage for Canada Lynx critical habitat. Lynx critical habitat occurs on SR 20 between MP 157.4 to 167.04 and MP 214.34 to 214.70. Is there designated critical habitat within the project action area? If no, done Ã¾ No Â¨ Yes Gray Wolf The programmatic will provide informal coverage for gray wolf Is the project located in a county where gray wolf is on the USFWS species list? Â¨ No Ã¾ Yes After mapping your project in IPaC, was gray wolf on the species list returned by IPaC? Â¨ Yes Ã¾ No Effect Determination: No Effect Rationale This species is not listed on the IPAC list and no habitat for gray wolf is present within the project action area. The project will have no effect on gray wolf. Grizzly Bear The programmatic will provide informal coverage for Grizzly Bear Is the project located in a county where grizzly bear is on the USFWS species list? Â¨ No Ã¾ Yes After mapping your project in IPaC, was grizzly bear on the species list returned by IPaC? Â¨ Yes Ã¾ No Effect Determination: No Effect Rationale Grizzly bear is not on the IPAC list from USFWS. No habitat for grizzly bears is located in the project action area. The project will have no effect on grizzly bear. Page 22 of 40 Western Snowy Plover The programmatic will provide informal coverage for W. Snowy Plover Is the project located in Pacific or Grays Harbor counties? Ã¾ No Â¨ Yes Streaked Horned Lark The programmatic will provide informal coverage for Streaked Horned Lark Is streaked horned lark on the county list, or does the activity occur in Pierce, Thurston, Mason, Grays Harbor, Pacific, Wahkiakum, or Cowlitz Counties? Â¨ No Ã¾ Yes After mapping your project in IPaC, was streaked horned lark on the species list returned by IPaC? Ã¾ Yes Â¨ No Will there be ground disturbing activities (either permanent or temporary) to potential suitable nesting habitat during the breeding or non-breeding season as identified by the project biologist? Â¨ Yes Ã¾ No Will the project have visual or noise disturbance in streaked horned lark potential nesting habitat from April 15 to August 31? Ã¾ No Â¨ Yes Effect Determination: No Effect Rationale: The project action area does not support habitat for this species. The project will have no effect on streaked horned lark. Streaked Horned Lark Critical Habitat The programmatic will provide informal coverage for Streaked Horned Lark critical habitat. Is streaked horned lark critical habitat on the county list, or does the activity occur in Pierce, Thurston, Mason, Grays Harbor, Pacific, Wahkiakum, or Cowlitz Counties? Ã¾ No Â¨ Yes Taylor's Checkerspot Butterfly The programmatic will provide informal coverage for Taylor's Checkerspot Butterfly Is the Taylorâ€™s checkerspot butterfly on the county list, or does the activity occur in Island, San Juan, Clallam, Pierce, Lewis, Mason, or Thurston counties? Ã¾ No Â¨ Yes Page 23 of 40 Taylor's Checkerspot Butterfly Critical Habitat The programmatic will provide informal coverage for Taylor's Checkerspot Butterfly critical habitat. Is Taylorâ€™s Checkerspot Butterfly critical habitat on the county list, or is the project in Thurston, Pierce, Skagit, Island or Clallam Counties? Â¨ No Ã¾ Yes Does the project action area overlap with designated critical habitat? Â¨ Yes Ã¾ No Western Yellow-billed Cuckoo The programmatic will provide informal coverage for Yellow-billed Cuckoo. This bird is listed in all of Washington State. There is no proposed or designated critical habitat in Washington State. Is yellow-billed cuckoo on the IPaC county or project-specific list? Ã¾ Yes Â¨ No Does the project action area contain mature, wooded, non-coniferous riparian areas that are equal or greater than 50 acres in size? Â¨ Yes Ã¾ No Will the project occur during October-April? Ã¾ Yes Â¨ No Will the project have effects to potential riparian habitat, in hardwood stands that are a minimum of 50 acres in size? Â¨ Yes Ã¾ No Effect Determination: No Effect Rationale The project action area does not support habitat for this species. The project will have no effect on yellow-billed cuckoo. Oregon Spotted Frog The programmatic will provide informal coverage for Oregon Spotted Frog. Is the project in Whatcom, Skagit, Snohomish, King, Pierce, Thurston, Clark, Skamania, Yakima, or Klickitat Counties? Â¨ No Ã¾ Yes Is the project in one or more of the 5th or 6th field HUCs identified in the above counties, or in proposed critical habitat? Â¨ No Ã¾ Yes Page 24 of 40 Will the project have ground disturbance activities, new PGIS, use herbicides outside the road prism, or alter hydrologic conditions in suitable habitat? If no for all of these activities, then no effect for Oregon spotted frog. Proceed to effect determination. Ã¾ Yes Â¨ No Will the project be near any aquatic (pond, channel, ditch, river, stream, lake) or wetland (including seasonally flooded pastures, disturbed or farmed wetlands etc.) habitat? Ã¾ Yes Â¨ No Explain soil conditions at the site Soils consists of gravelly loams that may or may not contain fill material. In developed areas, sandy fill material was found on top of a fill layer, but native soil areas had a dominant component of Loam. NRCS mapping of soils is Norma Loam, which is on the National List of Hydric Soils in Snohomish County (2015). Office Screening Model, Elevation. Indicate the elevation of the project action area and discuss relative to the Oregon spotted frog habitat HUCs indicated. The elevation in the project area lies between 135 feet elevation and 200 feet elevation within the 5th HUC 1711001102-Quilceda Creek/Frontal Puget Sound. The project is located in the upper portion of this watershed. Office Screening Model, Wetland and Hydrology GIS layers. Select the wetland and hydrology layers present within the action area. Do not assess for OSF if the attributes are within marine, or brackish, or tidally influence bodies of water. Washington Department of Ecology 2011 Modeled wetland layer/grid code attributes, Grid Code 1, Class_Name Potentially Disturbed Wetlands. National Hydrology Dataset 2011: This layer should be used as a tool to look for connectivity between permanent water and refugia/summer habitat. a. Waterways, including ditches, channels, canals, streams, and rivers. Provide a map of the wetland/hydrology layers present in the action area Page 25 of 40 Page 26 of 40 Page 27 of 40 On-Site Screening. Select the elements of breeding habitat that are present in the action area Inundated for at least 5 weeks during late winter/early spring, starting as early as February. Discuss breeding habitat or the lack thereof in the action area The project area supports one wetland in the southern portion of the action area that is inundated with seasonal ponding for at least 5 weeks; however, most of the wetland is located on a gentle slope and inundated areas are not ponded to a depth greater than 1 foot. The wetland is typically wet in February and stays inundated through April, when it begins to dry up and hydrologically separates from Edgecomb Creek. The wetland dries up to the surface by June 30th. The majority of wetland vegetation is scrub shrub with some forest; sole emergent areas lie in the center of the wetland and cover about 0.5 acre, whereas the entire wetland feature is 3 acres. The wetland remains surrounded by roads and a house, thus its buffer is disconnected from other wetlands. The remaining water body in the action area is perennial flow in Edgecomb Creek that lacks low gradient shallows and extensive emergent vegetation during the breeding season. The remainder of the action area includes non-wetland areas and the section of Edgecomb Creek to be abandoned. The section of Edgecomb Creek to be abandoned lacks low gradient shallows and lacks emergent vegetation that is inundated to a depth of 12 inches deep. The action area is lacking breeding habitat for Oregon Spotted Frog. Page 28 of 40 Discuss summer habitat or lack thereof in the action area The riparian corridor next to Edgecomb Creek downstream of barrier 99059 is forested with red alder to provide partial shading of stream flows during the summer. Edgecomb Creek is hydrologically disconnected from the adjacent wetland in the summer months and this aforementioned wetland lacks perennial ponding. The flow in Edgecomb Creek would not support the presence of the frogs in the summer, who need still lentic ponded water. Discuss winter habitat or the lack thereof in the action area The wetland south of Edgecomb Creek is inundated seasonally, but dries up in the summer. The wetland is not inundated in October; therefore, it would not support wintering habitat. Any frogs passing through this area during the winter months, would need to relocate before the wetland becomes disconnected from other water bodies and dries up during the summer. Habitat is not present for the Oregon Spotted Frog to complete its life cycle. Comments Biological Opinion (page 49) indicates one culvert on SR 531 with potential lentic habitat for Oregon Spotted Frog. Identified fish passage barriers on ArcMap GIS include barrier 991750 (Fish Creek) with adjacent mapped Palustrine aquatic bed wetlands. Barrier 991750 location potentially intersects suitable lentic habitat, however, it is located on a tributary to Portage Creek at least 6 miles west of Edgecomb Creek project action area. Effect Determination: No Effect Rationale The site is located in a watershed historically documented to support this species. The site supports aquatic areas; however, the action area lacks lentic habitat for the Oregon Spotted Frog to complete its life cycle. The project will have no effect on Oregon spotted frog. Oregon Spotted Frog Proposed Critical Habitat The programmatic will provide informal conferencing for Oregon Spotted Frog proposed critical habitat. Is the project in Whatcom, Skagit, Thurston, Skamania, or Klickitat Counties? Ã¾ No Â¨ Yes Page 29 of 40 Project Minimization Measures Stormwater Quality and Quantity Minimization Measures MM-1. All projects (except exempt activities as listed in section 3-2.2 of the Highway Runoff Manual (HRM, WSDOT 2014), are subject to minimum stormwater management requirements as outlined in Section 3-3 of the HRM. Non-exempt projects must address erosion control if = 7,000 ft2 of soil will be disturbed or if there is = 2000 ft2 of new, replaced, or new + replaced impervious surface. Erosion control requirements include: 1) a temporary erosion and sediment control (TESC) plan (see TESC Manual), and a project specific spill prevention, control and countermeasures (SPCC) Plan as required in Standard Specification 1.07-15(1). Â¨ Yes Ã¾ No MM-2. Projects within 200 feet of surface water will install and maintain Best Management Practices (BMPs) as stated in the Temporary Erosion and Sediment Control Manual to ensure that no foreign material, such as pavement slurry from asphalt grinding equipment, is sidecast, and to control and prevent sediments from entering aquatic systems. Ã¾ Yes Â¨ No MM-3. Projects will at a minimum comply with Washington Department of Ecologyâ€™s State Water Quality Standards or permit modifications. Permit modifications are limited to temporary extension of the turbidity plume. Ã¾ Yes Â¨ No MM-4. Projects that drain to waters that may be used by listed fish species and create more than 500 ft2 of new pollution generating impervious surface in any TDA will use the most current WSDOT stormwater effects analysis guidance to evaluate the potential effects of each proposed project. The PBA Determination Form and/or supplemented documents must include the following information at a minimum: 1) Sufficient information to assess pre-project and post-project stormwater pollutant loadings and end of pipe concentrations. 2) Identify the receiving waterbodies for the stormwater runoff associated with the new pollution generating impervious surface. 3) Identify any proposed new (or modified) stormwater outfalls/structures. Â¨ Yes Ã¾ No MM-4 cont'd. 4) A qualitative or quantitative description of pre-and post-project mixing zones or dilution analysis, consistent with WSDOT stormwater effects analysis guidance. If exposure to listed fish species in the dilution zone cannot be discounted, a quantitative description is recommended. 5) Describe potential effects to hydrology (i.e., peak flows, base flows, flow durations, etc.) and in-stream conditions (i.e., bed and bank scour or erosion, channel stability, etc.) due to the proposed project. Â¨ Yes Ã¾ No MM-5. The project will not cause or contribute to bed or bank scour or erosion (channel instability), and will not measurably affect base, peak, or flow durations in any Threshold Discharge Area (TDA) or receiving waterbody. Â¨ Yes Ã¾ No MM-6. Stormwater will be infiltrated and/or dispersed when possible. Â¨ Yes Ã¾ No Page 30 of 40 Aquatic Area Buffers Minimization Measures MM-7. No contractor staging areas will be allowed within 200 feet of potentially suitable wetland, stream, estuarine, river or marine drainage as identified by the project biologist, unless site specific review completed by the project biologist indicates that no impacts to the sensitive resource areas will occur due to topography or other factors. Ã¾ Yes Â¨ No MM-8. Temporary material storage piles consisting of erosive materials will be placed outside the 100-year floodplain during the rainy season (October 1 through June 1) except for emergency projects, or unless site specific review completed by the project biologist indicates that topography or other factors preclude runoff from entering waterbodies containing listed fish species or their prey. Such temporary storage piles will be stabilized with plastic sheeting, straw bales, or other BMPs, to prevent sediment delivery to these waterbodies. Material to be used within 12 hours of deposition will not be considered a temporary material storage pile. Ã¾ Yes Â¨ No MM-9. All excavated materials will be removed to an upland location where they cannot enter the water body. Ã¾ Yes Â¨ No Vegetation Removal Minimization Measures MM-10. To facilitate compliance with the Northwest Forest Plan Standards and Guidelines, WSDOT will coordinate with the appropriate Forest Service ranger district if tree removal, including dying, dead, or downed wood is proposed on lands identified in the plan Â¨ Yes Ã¾ No MM-11. Minimize removal of riparian vegetation and replant riparian vegetation. Replanting may not be possible in permanent impact areas, the roadway clear zone, or adjacent to or under bridges. However, potential replanting of riparian vegetation near the site should be evaluated. The PBA Determination Form will provide the justification for the removal of riparian vegetation and will include the proposed replanting plans, if applicable. Ã¾ Yes Â¨ No MM-12. Vegetation will only be grubbed from areas undergoing permanent alteration. No grubbing will occur in areas slated for temporary impacts. Ã¾ Yes Â¨ No MM-13. Disturbance to riparian vegetation from the operation of heavy equipment will be minimized as practicable by straddling it with heavy equipment or by pruning it without damaging the roots. Existing riparian vegetation outside of the work area will not be removed or disturbed. Ã¾ Yes Â¨ No Page 31 of 40 In-Water Work Minimization Measures MM-14. Seasonal restrictions applied to work conducted within or below the OHWM or MHHW, will follow requirements within the HPA issued by the Washington Department of Fish and Wildlife, and Water Quality Standards for Surface Waters of the State of Washington (Chapter 173-201A WAC). In-water work duration will be minimized as practicable. Ã¾ Yes Â¨ No MM-15. No temporary floating work platform will place its anchors or allow grounding in fish spawning areas in freshwater or in eelgrass, kelp, macro algae, or intertidal wetlands. Anchoring above beds or eelgrass, kelp, or macro algae will be kept to a minimum. Â¨ Yes Ã¾ No MM-16. Construction equipment will not enter any water body without authorization from the Washington Department of Fish and Wildlife, USFWS, and the NMFS. Equipment will be operated as far from the waterâ€™s edge as possible. Ã¾ Yes Â¨ No MM-17. Anthropogenic debris from bridge demolition will be directed toward storage areas on land or barges. Bridge demolition will include sectioning the structure to the extent possible to provide for safer disposal and to minimize debris falling into surface waters. Â¨ Yes Ã¾ No Revegetation and Slope Stability Minimization Measures MM-18. All unstable slopes resulting from construction activities with a high likelihood of delivery of material to listed species-bearing waters will be stabilized within 2 days from October 1 to April 30, and within 7 days from May 1 to September 30. Ã¾ Yes Â¨ No MM-19. Temporarily disturbed areas will be restored to pre-work conditions to the extent possible, including protecting existing root systems and allowing re-sprouting of herbaceous and woody plants. Native trees and shrubs will be used that are endemic to the project vicinity or region of the State where the activity is occurring. Ã¾ Yes Â¨ No MM-20. All exposed areas will be mulched and seeded with an approved native or noninvasive herbaceous seed mix following construction and/or planted with native woody vegetation and trees (if appropriate) during the first available planting season. Ã¾ Yes Â¨ No General Construction Minimization Measures MM-21. Construction impacts will be confined to the minimum area necessary to complete the project. Ã¾ Yes Â¨ No Page 32 of 40 MM-22. Boundaries of clearing limits will be clearly flagged to prevent disturbance outside of the limits. Ã¾ Yes Â¨ No Pollutant Protection Minimization Measures MM-23. BMPs, as stated in the Highway Runoff Manual, will be used to ensure that no foreign material such as oil or fuel from construction equipment will enter any wetlands, flowing or standing water. Ã¾ Yes Â¨ No MM-24. All equipment will be fueled and maintained more than 200 feet from the nearest wetland, ditches, flowing or standing water, unless site specific review completed by the project biologist indicates that no impacts to the resource areas will result due to topography or other factors. Exceptions to this requirement are allowed for large cranes, pile drivers, and drill rigs if they cannot be easily moved. Ã¾ Yes Â¨ No MM-25. Equipment will be checked daily for leaks and will be well maintained to prevent lubricants and any other deleterious materials from entering waters of the State. Prior to entering the water or below the OHWM, all equipment will be free of any external petroleum products, hydraulic fluid, coolants, and other deleterious materials. Wash water will not be discharged to any water body without pre-treatment. Ã¾ Yes Â¨ No MM-26. All equipment entering waters that may be used by listed fish species and/or if the waters are critical habitat, will use vegetable oil or other biodegradable acceptable hydraulic fluid substitute, unless the project is an emergency action. Ã¾ Yes Â¨ No Access Roads and Bridges Minimization Measures MM-30. The establishment and use of temporary access roads will meet the following conditions: 1) Existing roadways or travel paths will be used whenever they provide the needed access. 2) Where stream crossings are essential, the crossing design will accommodate reasonably foreseeable risks (such as flooding and associated bedload and debris) to prevent diversion of stream flow out of the channel and down the road in the event of a crossing failure. 3) Vehicles and machinery must cross riparian areas and streams perpendicular to the main channel unless site specific conditions require an alternate approach. 4) Vehicles and machinery will not cross within a wetted stream, unless necessary as part of an emergency action. The PBA Determination Form must state why avoidance of crossing a wetted stream is not possible if proposed as part of an emergency action. Ã¾ Yes Â¨ No MM-30 cont'd. 5) Temporary roads within 300 feet of streams will avoid, minimize, and mitigate soil disturbance and compaction by clearing vegetation to ground level, and placing clean gravel over geotextile fabric. 6) Vehicles and machinery operating below the OHWM (except if operating in the dry or during emergency actions) will use biodegradable hydraulic fluids and lubricants to reduce the potential impacts associated a potential oil spill or leak. 7) The number of stream crossings will be minimized. Ã¾ Yes Â¨ No Page 33 of 40 MM-31. New stream crossing structures, including channel-spanning bridges, will not reduce the existing stream width. Ã¾ Yes Â¨ No Bank Protection Minimization Measures MM-49. If site-specific conditions allow, improve fish habitat by incorporating LWD into bank protection projects. Ã¾ Yes Â¨ No MM-50. Installation of riprap and other materials will occur from the banks or outside the wetted perimeter as much as possible. Ã¾ Yes Â¨ No MM-51. Project areas with existing riprap will be allowed to increase the lineal distance of the riprapped area below the OHWM by an additional 5 percent. If the project footprint needs to be increased beyond this, riprap placement will demonstrate consistency with the Integrated Streambank Protection techniques that are defined for WSDOT projects (see Working Document) Ã¾ Yes Â¨ No MM-52. All materials, such as riprap or gravel, placed within the water will be free of rock fines, silt, soil, or other extraneous material. An exception to the presence of fines is permitted if they are required as part of channel bed reconstruction. Ã¾ Yes Â¨ No Work Area Isolation and Fish Handling Minimization Measures MM-53. Listed fish species, including their forage fish, will be removed from the work area prior to any in-water work activities, unless removal would affect the individuals more than leaving them on-site. Fish exclusion activities will follow the most recent WSDOT protocol that has been approved by the NMFS and USFWS. Ã¾ Yes Â¨ No MM-54. Water pumped out of the isolated project area will be discharged to a temporary storage and treatment site or to upland areas and filtered through vegetation prior to reentering the stream channel. Ã¾ Yes Â¨ No MM-55. All intake pumps within fish bearing streams will have a fish screen installed, operated and maintained. Screening techniques must utilize the specifications in the HPA and be in compliance with RCW 77.55.010, RCW 77.57.040 and RCW 77.57.070 or the specifications in the NMFS Anadromous Salmonid Passage Facility Design manual (2008) and NMFS Fish Screening Criteria for Anadromous Salmonids (1997), whichever is more restrictive. Ã¾ Yes Â¨ No MM-56. Temporary diversion structures will be non-erosive (e.g., sand bags filled with clean gravel and covered with plastic sheeting, portable bladder dam). Ã¾ Yes Â¨ No Page 34 of 40 MM-57. Temporary bypass systems will utilize non-erosive techniques, such as pipe or a plastic-lined channel that will accommodate the predicted peak flow rate during construction. Ã¾ Yes Â¨ No MM-58. Temporary bypass structures will have energy dissipaters at the outflow to prevent erosion. Ã¾ Yes Â¨ No MM-59. Work area isolation, fish capture and removal, and dewatering/re-watering are conducted using the WSDOT Fish Exclusion Protocols and Standards. Implementing these factors depends to some degree on local conditions and the professional judgment of the biologist. If block nets are in use, they will be checked 3 times daily for the first 48 hours after block net installation, and for the first 24 hours after significant rainfall. Flows shall be gradually reintroduced to the isolated work area, to prevent channel bed or bank instability, excessive scour, or turbidity and sedimentation. The directing biologist shall inspect the work area downstream reach to ensure no fish are stranded or in distress during reintroduction of flows. Ã¾ Yes Â¨ No MM-60. Upon completion of all in-water work, all stream diversion devices, equipment, pipe, and conduits will be removed and disturbed soil will be restored after diversions are removed. Streambank plantings may occur at a later date during the planting season. Ã¾ Yes Â¨ No MM-61. Projects will not inhibit passage of any listed fish species life stage following completion. When feasible, a bypass system will be installed during construction to permit both upstream and downstream passage of listed fish and their prey. Ã¾ Yes Â¨ No Culvert Work Minimization Measures MM-62. Culvert cleaning, repair, and maintenance will occur during the dry or when listed fish are least likely to be present. Â¨ Yes Ã¾ No MM-63. For waters that may be used by listed fish species and include critical habitat, culvert cleaning will occur either by hand or from the top of the bank when flow is in the channel or when the stream is either dry or a flow bypass is installed. Â¨ Yes Ã¾ No MM-64. All culverts conveying fish bearing streams will be designed and constructed in accordance with WDFWâ€™s Water Crossing Design Guidelines (Barnard et al. 2013) or most current document and related Washington Administrative Code criteria. Culverts must be designed to either meet the â€œno slopeâ€ or the â€œstream simulationâ€ model design, whichever is most appropriate. Ã¾ Yes Â¨ No MM-65. Repair or extension of culverts that are partial or complete fish passage barriers will incorporate measures to improve fish passage for all life stages. The retrofit of an existing culvert to provide fish passage will require approval of the project design from the WDFWâ€™s Area Habitat Biologist and WDFWâ€™s Area Engineer. Ã¾ Yes Â¨ No Page 35 of 40 Cutting and Filling Minimization Measures MM-66. Fill material will only be placed in specified and permitted locations. Fill placement may be permanent or temporary and will be located in a way that minimizes impacts to sensitive areas. Ã¾ Yes Â¨ No MM-67. Temporary fills must be entirely removed and the site restored to pre-existing contours. Ã¾ Yes Â¨ No Herbicide Use Minimization Measures MM-75. Herbicides will not be used within 200 ft of listed fish species spawning and rearing streams unless site specific review completed by the project biologist indicates that topography or other factors preclude herbicides from reaching spawning and rearing stream occupied by listed fish species. Â¨ Yes Ã¾ No Lighting Minimization Measures MM-76. Temporary lights for night work will be directed away from waters with listed fish species to the greatest extent possible, with the intent to prevent light from shining on surface waters. Ã¾ Yes Â¨ No MM-77. When permanent lighting is needed on a bridge or road segment adjacent to surface waters with listed fish species, individual â€œcobra headâ€ or similar lamps will be used when possible, rather than area lights that illuminate larger areas. Lights will be directed away from waters with listed fish species to the extent possible. Â¨ Yes Ã¾ No MM-78. Walkways and bicycle lanes on bridges will be lit from below if possible to minimize nighttime light exposure of waters with listed fish species. Â¨ Yes Ã¾ No MM-79. When permanent lighting is needed on a road segment adjacent to prairie species habitat, individual â€œcobra headâ€ or similar lamps will be used when possible, rather than area lights that illuminate larger areas. Lights will be directed away from prairie species habitat to the extent possible. Â¨ Yes Ã¾ No Geotechnical Investigations Minimization Measures MM-80. For Geotechnical Drilling: No geared mechanisms (e.g., tires, tracks) will enter the wetted perimeter of a waterbody. Truck mounted and tracked drilling equipment will work from a location outside of the wetted perimeter unless working off a temporary floating work platform or barge. The temporary work platform will not ground on the bed of State waters. Â¨ Yes Ã¾ No Page 36 of 40 Grizzly Bear Minimization Measures MM-96. Projects involving bridge replacements within the range of the grizzly bear will design the new structure to accommodate the passage of wildlife when practicable. Â¨ Yes Ã¾ No Oregon Spotted Frog Minimization Measures MM-97. An Environmentally Sensitive Area fence (for example, high visibility exclusion fencing) will be installed as necessary along project boundaries to protect offsite habitat including potential breeding sites for Oregon spotted frog. A separate fencing plan should include a map showing the preliminary location of the fence for the project. Construction personnel will not enter the Environmentally Sensitive Areas. Â¨ Yes Ã¾ No MM-98. For Oregon spotted frog projects (except exempt activities as listed in section 3-2.2 of the Highway Runoff Manual (HRM, WSDOT 2014), are subject to minimum stormwater management requirements as outlined in Section 3-3 of the HRM. Non-exempt projects must address erosion control if = 7,000 ft2 of soil will be disturbed or if there is = 2000 ft2 of new, replaced, or new + replaced impervious surface. Erosion control requirements include: 1) a temporary erosion and sediment control (TESC) plan (see TESC Manual), and a project specific spill prevention, control and countermeasures (SPCC) Plan as required in Standard Specification 1.07-15(1). Â¨ Yes Ã¾ No MM-99. Stormwater will not be discharged to habitat potentially suitable for Oregon Spotted Frog. Detention ponds will be designed to not attract or promote bullfrogs. Â¨ Yes Ã¾ No MM-100. Projects within 200 ft of surface water or areas inundated for four or more months per year will install and maintain BMPs as stated in the HRM and TESC manuals to ensure that no foreign material, such as pavement slurry from asphalt grinding equipment, is sidecast, and to control and prevent sediments from entering aquatic systems. Â¨ Yes Ã¾ No MM-101. Minimize removal of riparian vegetation and replant riparian vegetation. Replanting may not be possible in permanent impact areas, the roadway clear zone, or adjacent to or under bridges. However, potential replanting of riparian vegetation near the site should be evaluated. In areas containing suitable OSF habitat, ensure revegetation does not change vegetation from a low vegetation type to a high vegetation type. Â¨ Yes Ã¾ No MM-102. Upon completion of all in-water work, all stream diversion devices, equipment, pipe, and conduits will be removed and disturbed soil will be restored after diversions are removed. Streambank plantings may occur at a later date during the planting season. In areas with suitable Oregon Spotted Frog breeding habitat, do not plant trees, especially conifers, along the shoreline to avoid shading of potential breeding sites. Â¨ Yes Ã¾ No Page 37 of 40 MM-103. Herbicides will not be used within 200 ft of waterbodies unless site specific review completed by the project biologist indicates that topography or other factors preclude herbicides from reaching habitats used by Oregon Spotted Frog. Herbicides applied during the dry season on lands that flood during the winter/spring must break down in the environment before the next inundation Â¨ Yes Ã¾ No MM-104. For waters that may be used by Oregon Spotted Frog, culvert cleaning will occur either by hand or from the top of the bank when flow is in the channel, when the stream is either dry, or a flow bypass is installed. Â¨ Yes Ã¾ No Minimization Measures Documentation Will the project use all applicable minimization measures? Ã¾ Yes Â¨ No Indicate which minimization measures will not be used and why. MM 75-Selective weed control with herbicides will generally be used to treat the adjacent wetland in the buffer of Edgecomb Creek. The entire buffer will be treated in the summer with selective weed control when flows are low in the creek. Recommendations have been made to clear the blackberry and reed canarygrass after treating it to reduce amount of potential herbicide in aquatic areas. Adjacent wetland is disconnected hydrologically from Edgecomb Creek during summer time. Biologist indicates that weed reduction in buffer areas will result in a net functional lift for salmon habitat. Vicinity Map & Photos Page 38 of 40 Page 39 of 40 Page 40 of 40 WSDOT NOAA Short Project Notification Form Note: The proper version of this form must be submitted to either the National Marine Fisheries Service or the U.S. Fish and Wildlife Service (or both). See http://wwwi.wsdot.wa.gov/Environment/FishWildlife/ for submittal procedures. Project Name: SR 531/Edgecomb Creek - Fish Passage Submittal Date: March 3, 2016 Work Order: XL4697 WIN: A53175A Project Location: State Route 531, Mile Post 8.60 to 8.80 Geographical Coordinates: 48.15190300 / -122.14037700 to 48.15249500 / -122.13623100 Indicate Township / Range / Section Township 31 North, Range 5 East, Sections 23 and 26. Date of NMFS concurrence March 3, 2016 County: Snohomish Region: Northwest Page 1 of 33 Project Biologist: Toberer, Beth, tobereb@wsdot.wa.gov, 509-667-3036 ACTION AREA DESCRIPTION WAS MODIFIED TO READ THE FOLLOWING. "THE PROPOSED ACTION INCLUDES CONSTRUCTING THE NEW STREAM CHANNEL, PLUGGING AND ABANDONING BARRIER 99059, AND DIVERTING THE STREAM INTO THE NEW SECTION OF CHANNEL. BARRIER 99058 WILL BE LEFT OPEN TO ALLOW EDGECOMB CREEK TO BACKWATER INTO A PORTION OF THE REMNANT CHANNEL AND RETAIN THIS AREA AS REFUGIA HABITAT DURING HIGH FLOWS." Benthic habitat is likely present in areas of streambed to be relocated north of SR 531 (5,425 sq ft); HOWEVER, ABOUT 1,500 SQUARE FEET OF THIS AREA BELOW THE LOWEST WEIR WILL BE ALLOWED TO BACKWATER UNDER SR 531, THUS IT WILL RETAIN POTENTIAL FOR BENTHIC DEVELOPMENT. Benthic habitat has been scoured and deposition has occurred in benthic areas by the dysfunctional weirs UPSTREAM OF THE PROPOSED BACKWATER area. 9/15/17-The unstable slope design delayed construction; therefore, WDFW and NMFS approved WSDOT to extend their in-water work window until October 15, 2017 (attached). Vegetation impacts were updated to match the final permitted impact quantities and include an additional 200 square feet of temporary impact to riparian vegetation impact to repair an unstable slope during construction. All of the temporary vegetation impacts will be re-vegetated with native trees and shrubs in the impact area. An off site riparian restoration area was added to the project during 90% design that is located next to construction (behind the High Visibility Fence) in the buffer of Edgecomb Creek. The restoration area was added to the offsite restoration section. Construction is still not complete and channel is still diverted as of 10/17/2017; therefore, WSDOT was approved to finish the stream and re-water Edgecomb Creek by 10/25/17. WSDOT/DFW/Tulalip Tribes currently monitoring the stream channel to report on status of Coho salmon downstream of the stream diversion and block net. Currently no adult salmon have been reported to be migrating upstream in Edgecomb Creek near the project. Reviewing Biologist: Bakeman, Mark E, bakemam@wsdot.wa.gov, 509-667-3036 Signed 3/3/16 Signed March 3, 2016 @ 8:09 PM Form Completed Date: February 5, 2016 Form updated on: September 26, 2016 WRIA: 7: Snohomish 6th Field Hydrologic Unit Code (HUC) Name Quilceda Creek Page 2 of 33 6th Field HUC number 171100110204 Site Visit Date: January 28, 2016 Date of Early Coordination: February 4, 2016 Explain and summarize Early Coordination activities with the Services: A pre-BA meeting was held for the project on April 16, 2015 and it was generally agreed by USFWS/NMFS it could be covered under the former Programmatic BA that WSDOT had with USFWS and NMFS. NMFS sent an email on May 18, 2015 that the project qualified for Fast Track. The project finally received right of entries for specialty groups in January 2016; therefore, early coordination was continued via an email sent on 2/4/2016 to request use of the existing Programmatic and update USFWS/NMFS on any design features. Updated design plans were emailed to USFWS/NMFS on 2/18/2016. Does the project meet the conditions of the programmatic biological assessment? Ã¾ Yes Â¨ No Is this a reference biological assessment? Â¨ Yes Ã¾ No Is this an Essential Fish Habitat (EFH) only submittal for NMFS? Â¨ Yes Ã¾ No Is this an after the fact consultation for NMFS? Â¨ Yes Ã¾ No Will this project be submitted Fast Track for the NMFS? Ã¾ Yes Â¨ No Will this project be submitted Fast Track for the USFWS? Â¨ Yes Ã¾ No NMFS summary of species and critical habitats in the project action area: Puget Sound Steelhead Check all project activities that apply (for both NMFS and USFWS projects) Upland vegetation removal & management Riparian and Wetland Vegetation Removal and Management Work Area Exclusion and Dewatering Heavy equipment operation Cut and fill operations Fish Handling Other (explain in Project Description) Page 3 of 33 Project action area: The project action area includes all terrestrial and aquatic habitats that will be affected by the project during construction of the proposed action. THE PROPOSED ACTION INCLUDES CONSTRUCTING THE NEW STREAM CHANNEL, PLUGGING AND ABANDONING BARRIER 99059, AND DIVERTING THE STREAM INTO THE NEW SECTION OF CHANNEL. BARRIER 99058 WILL BE LEFT OPEN TO ALLOW EDGECOMB CREEK TO BACKWATER INTO A PORTION OF THE REMNANT CHANNEL AND RETAIN THIS AREA AS REFUGIA HABITAT DURING HIGH FLOWS. The action area includes a one-quarter of a mile radius from the proposed stream work for terrestrial habitats. The action area includes the existing stream channel in the project footprint, the new connection point upstream of Barrier 99059, the new connection point downstream of Barrier 99058, and 220 feet downstream of the stream channel connection point up to the existing culvert under 67th Avenue NE. Aquatic habitats in the action area include wetland areas south of the existing and proposed stream location where WSDOT will do weed control (reed canarygrass) to enhance existing aquatic habitats. The project will improve access for salmon to 1.77 miles of upstream habitat, after removing the fish barriers; therefore, upstream aquatic areas are included in the action area. Attach map and photographs: Page 4 of 33 Page 5 of 33 Page 6 of 33 Page 7 of 33 Page 8 of 33 Page 9 of 33 Project Description: The project is located on and adjacent to SR 531 where Edgecomb Creek (Middle Fork Quilceda Creek) flows underneath SR 531 through two fish passage barrier culverts at Mileposts 8.65 (Barrier 99058) and 8.71 (99059) (action area map). The proposed project will correct both fish barriers by eliminating the barriers and moving a 330 foot section of the stream to the south side of SR 531. Buildings and structural fill material will be removed in the pathway of the new stream and the new stream channel will be built with natural meanders to connect Edgecomb Creek upstream and downstream habitats. A fish passable driveway box culvert measuring 16 foot wide by 20 feet long will be installed south of SR 531 to provide stream passage under a private driveway near the eastern stream connection point. The new channel will provide 600 feet of new stream length, south of SR 531 to connect upstream and downstream habitats in Edgecomb Creek and eliminate the fish barriers and broken weirs in the existing channel. Stream bed gravel will be placed in the new channel and large woody material (LWM) will be installed along outer meander bends to provide habitat in the new stream channel for multiple life history phases of salmon and trout. The new stream channel will replace fill material and buildings and will be planted with native vegetation, thus it will enhance water quality and quantity functions for overland flow of runoff that flows into Edgecomb Creek. Stormwater from SR 531 will continue to be treated by the vegetated filter strip located north of SR 531. The project includes minimal work below the existing OHWM, because the new stream channel will be built first during construction. Following construction of the new channel, fish will be excluded from the existing channel and moved downstream of the project area. Flow will then be diverted into the new channel. The remnant channel and dysfunctional weirs will be turned over the City of Arlington to be used as a storm water treatment facility. Barrier 99059 will be plugged and abandoned and barrier 99058 will be screened and blocked with structural rock and streambank material to allow drainage from the abandoned stream channel that will continue to drain stormwater runoff. The project will be designed and constructed in accordance with Integrated Stream Habitat Protection Guidelines. Non-galvanized wire will be used to secure LWM structures specified in the proposed design to provide habitat for juvenile salmon. Small sections of structural rock may be needed next to SR 531 to prevent roadway scour, but any structural fill material will be placed away from the OHWM and buried in the streambank. Structural material will be covered with layers of gravel and will not be exposed to fish in the creek. All structural material buried in the streambank will be planted with native woody species to enhance stability and provide riparian function near the stream. The project will not add new impervious surface to SR 531 and will not include roadway improvements. Traffic control will be necessary to perform stream relocation construction safely and effectively. The project will be constructed during daytime hours; minor night work may only be used if the project requires minor traffic control near SR 531 and private residences for safety. Project Equipment List Excavator, backhoe, grading machine, earth mover, dump truck, hauling truck. Indicate equipment that will be working below the ordinary high water mark (OHWM) Excavator arm will work below the existing OHWM. Earth mover and excavator will work below the proposed OHWM. Is this an emergency project? Â¨ Yes Ã¾ No Page 10 of 33 Does the project have sensitive habitats (within 200 feet of wetlands or surface waters) where staging, refueling, or other activities should be restricted? Ã¾ Yes Â¨ No Indicate mileposts within project area where restrictions apply. Entire project area between Milepost 8.65 and 8.71 has streams and wetlands, which have been delineated for avoidance and minimization planning. Will the project have construction equipment operating within the wetted channel of any waterbody? Ã¾ Yes Â¨ No Will detours be used? Â¨ Yes Ã¾ No Will the project include work at night? Â¨ Yes Ã¾ No Will artificial lights be used over or adjacent to an aquatic area? Ã¾ Yes Â¨ No Will blasting occur? Â¨ Yes Ã¾ No Will impact pile driving occur? Â¨ Yes Ã¾ No Will piles be removed on the project? Â¨ Yes Ã¾ No Is the project for slide abatement and repair? Â¨ Yes Ã¾ No Will cutting or filling occur? Ã¾ Yes Â¨ No Indicate cut area (excavated area) above the ordinary high water mark (OHWM). Area: 14,125 square feet (.324 acres) Indicate cut area (excavated area) below the ordinary high water mark. Area: 0 square feet Indicate fill area below the ordinary high water mark (OHWM) Area: 5,110 square feet (.117 acres) Will cutting or filling occur within 300 ft of a water body that has listed aquatic species or their habitat? Ã¾ Yes Â¨ No Will any soils be exposed? Ã¾ Yes Â¨ No Page 11 of 33 What is the erosion potential? Medium Will bare soils be revegetated or hydroseeded after construction? Ã¾ Yes Â¨ No Describe the proposed methods. Erosion control BMPs may include stabilized construction entrances, straw ground cover, straw wattles, silt fence, compost socks, or erosion control blankets to stabilize soils in the project area. Additional BMPs may be used if deemed more effective for the project site. Project Timing Construction Start Date June 1, 2016 Construction End Date December 31, 2016 Total Working Days 120 Revised Construction Start Date June 1, 2017 Revised Construction End Date November 15, 2017 Will the project need a Hydraulic Project Approval (HPA) or have an aquatic zone of impact requiring in-water work? Ã¾ Yes Â¨ No Will the project use a WDFW published in-water work window? Â¨ Yes Ã¾ No If the project cannot use the published window, indicate why and provide approval from WDFW The project received a work window extension to compensate for time lost during construction to re-design the slope repair. WDFW approved a work window from July 15 through October 15. The work window extension letter is attached to the PNF. Project Aquatic Habitat Impacts Elevated pollutant delivery (non-sediment)? Â¨ Yes Ã¾ No Will there be elevated sediment/turbidity? Ã¾ Yes Â¨ No Estimate the lineal extent of stream or shoreline that will be exposed to elevated turbidity (ft). 150 Page 12 of 33 Explain The new channel will tie into the existing channel; therefore, minor streambed disturbance is expected within 150 feet downstream of the connection. Any elevated turbidity is expected to be temporary and will comply with the downstream point of water quality compliance during construction. The action area for aquatic habitats was extended downstream up to 220 feet, due to minor changes in hydrology and expected benefits to fish habitat up to 67th Avenue NE. Will riparian habitat functions be altered? Ã¾ Yes Â¨ No Explain The project will remove buildings and fill material in a new area and convert it to stream and riparian area. The new riparian area will be vegetated with native species, will have LWM installed, and will connect to off site wetlands for an additional functional lift of rearing habitat for juvenile salmonids. The existing stream channel and adjacent vegetation north of SR 531 will be abandoned between the two fish barriers and will no longer directly provide riparian function. This vegetation includes non-mature red alder, Pacific willow, and western redcedar trees and shrubs that were planted in 1997 to restore a section of Edgecomb Creek that was impacted by SR 531/67th Avenue intersection improvements. The vegetation is invaded by reed canarygrass and Himalayan blackberry in the vegetation understory reducing existing riparian function. Will there be elevated surface water temperature? Â¨ Yes Ã¾ No Will there be substrate disturbance? Ã¾ Yes Â¨ No Indicate disturbed area if known Area: 5,110 square feet (.117 acres) Explain. An area of stream channel immediately downstream of barrier 991058 will be screened and partially filled to form the streambank of the newly connected channel. An area of stream channel immediately upstream of barrier 991059 will be filled to realign the stream channel to the south away from the road. This area is equal to the proposed fill below the OHWM reported above. The stream substrate area north of SR 531 between the barriers will no longer be used by salmon, and is equal to about 5,425 sq ft. The new channel will provide about 600 ft (9,972 sq ft) of new substrate area to connect upstream and downstream habitats in Edgecomb Creek. Will substrate disturbance mobilize contaminants? Â¨ Yes Ã¾ No Will there be loss of benthic invertebrate habitat and potential food web effects? Ã¾ Yes Â¨ No Indicate area of benthic invertebrate habitat disturbance Area: 10,535 square feet (.242 acres) Page 13 of 33 Explain. Benthic habitat is likely present in areas of streambed to be relocated north of SR 531 (5,425 sq ft); HOWEVER, ABOUT 1,500 SQUARE FEET OF THIS AREA BELOW THE LOWEST WEIR WILL BE ALLOWED TO BACKWATER UNDER SR 531, THUS IT WILL RETAIN POTENTIAL FOR BENTHIC DEVELOPMENT. Benthic habitat has been scoured and deposition has occurred in benthic areas by the dysfunctional weirs UPSTREAM OF THE PROPOSED BACKWATER area. Areas to be filled near the stream connection points (5,110 sq ft) south of SR 531 will be partially filled with streambank material and planted to provide riparian habitat next to stream bank habitat. Riparian habitat areas will support development of benthic habitat adjacent to the new stream channel south of SR 531. The new channel will create 9972 sq ft of new benthic area and enhance adjacent riparian habitat adjacent to the stream channel. Will there be elevated in-water noise from pile driving? Â¨ Yes Ã¾ No Fish harm or harassment from in-water work or handling? Ã¾ Yes Â¨ No Explain. The new stream channel will be constructed first with plugs in place to isolate it from the existing channel. Fish will need to be removed and excluded from the existing channel before it is abandoned. Fish block nets and fish exclusion will also be needed to isolate any fill areas near the connection points on the south side of SR 531. Will there be effects on fish migration? Ã¾ Yes Â¨ No Will project actions reduce the channel width, or block a shoreline migration use area, and if so, how much of channel/shoreline area (%) is available for fish movement? The project will relocate a 330 foot section (5,425 sq ft) of channel between two culvert fish barriers that has non-functioning weirs that pose additional barriers to fish migration. The project will greatly improve fish migration in the project area for improved access to 1.77 miles of upstream spawning habitat. Although the project will relocate 330 feet of stream channel it will remove fill material, impervious surface, and building structures and replace it with about 600 lineal feet of stream channel (9,972 sq ft)of new streambed south of SR 531. More habitat will be available for juvenile fish due to connection to offsite wetlands flooded by Edgecomb Creek on the south side of SR 531. The proposed stream channel will have wider channel widths, no weirs, and will include LWM to enhance juvenile salmon survival. Moreover, instream barriers will be removed permanently to maintain future fish passage through this area. Will there be impacts to wetlands that have fish habitat? Â¨ Yes Ã¾ No Will there be permanent or temporary fish habitat displacement? Ã¾ Yes Â¨ No Explain. The abandoned channel is considered fish habitat that will be displaced and replaced by the constructed and improved stream channel that connects high quality habitat areas. Page 14 of 33 Will there be altered water quality delivery, such as a change to a stormwater conveyance structure? Â¨ Yes Ã¾ No Will there be streambank/shoreline habitat loss/modification or reduced habitat connectivity? Â¨ Yes Ã¾ No Will natural stream processes and/or floodplains be altered? Â¨ Yes Ã¾ No Will the project have beneficial effects? Ã¾ Yes Â¨ No Explain. Existing stormwater drainage from SR 531 drains north directly to Edgecomb Creek, and this section of the stream will be moved, thus improving water quality for Edgecomb Creek. The project removes two fish barriers and a series of weir barriers in the stream to improve passage. Following relocation, more of the stream will be connected to adjacent wetlands increasing the quantity of rearing habitat available to salmon that spawn in the creek. Edgecomb Creek will have at least 200 additional feet of stream length due to the stream relocation. If project removes a fish barrier, indicate length of fish habitat gain on the stream (feet) 9,365 If project removes a fish barrier, indicate the area of new spawning area gained above the culvert (square feet or acres) Area: .709 acres (30,882 square feet) If project removes a fish barrier, indicate the area of new rearing area gained above the culvert (square feet or acres) Area: 1.19 acres (51,836 square feet) Fish Habitat Improvement As part of the project, check all that apply: Water quality improvements will occur to waters with listed species. Fish barriers will be eliminated. Revegetation of streambanks or riparian areas will occur. Large woody debris or habitat structures will be placed in streams. Fish habitat will be created. Will large woody material (LWM) be removed from the site? Â¨ Yes Ã¾ No Page 15 of 33 Environmental Setting Baseline Conditions. Document general baseline conditions in the action area as they relate to the proposed action and effects. Discuss surrounding land use if appropriate. The project is located primarily within Snohomish County, where land use includes rural roads, residential homes, a church, railroad parcels, Edgecomb Creek, and wetlands. SR 531 demarcates the jurisdictional boundary between the County and City of Arlington. The stream channel to be abandoned is located on City property north of SR 531. City property is zoned for commercial development. Riparian zone is relatively narrow and north of the stream channel historical wetlands have been filled and disturbed to create a developable lot. Describe the vegetation in the project action area: Vegetation in filled and developed areas includes mowed grass, pasture, dandelions, hairy cats ear, and reed canary grass with European birch and Douglas fir trees scattered across the residential lawn. Next to the residental filled parcel an existing wetland and riparian area supports non-mature red alder, Pacific ninebark, salmonberry, reed canarygrass, lady fern, and willows. The stream channel to be abandoned includes a narrow riparian forested zone on either side of the creek non-mature red alder, Pacific willow, and western redcedar trees. North of the Creek, the lot is dominated by pasture grasses, reed canarygrass, and Himalayan blackberry with other unidentified noxious weeds. Habitat in the project action area 35% Riparian, 3% Wetlands, and 62% Developed Do streams, rivers, or other waterbodies occur in the project action area? Ã¾ Yes Â¨ No Stream name 1 in action area and describe spawning gravels, embeddedness, riparian cover, refuge area riffles, etc. Focus on areas where impacts may occur. If the stream is a tributary of a larger stream or river, indicate distance to nearest confluence. Edgecomb Creek in the action area includes the section of the creek that will be relocated to the south side of SR 531. This stream section is a result of a constructed restoration project to improve fish passage upstream of the existing fish barrier under SR 531. Currently, the most upstream log control does not backwater the culvert, and the 2nd from the outlet has an excessive water surface drop of 0.5 meter (WDFW 2013). Weir connections are broken from their original supports and streambanks are scouring around the structures. Spawning in the action area includes abundant adult chum and Coho salmon in the reach immediately downstream of barrier 991059, and less abundant numbers of Coho observed upstream up to the first impassable barrier dam at 940 meters upstream. Chum were not observed upstream of the 0.5 meter water surface drop at the log control in the section of channel to be abandoned, and a Coho was observed drifting in and out of the outlet of barrier 991059 in December 2010. Culvert site 991058 downstream of the weirs has also been determined a partial barrier. Edgecomb Creek has spawning gravels, small and large woody material. The section to be abandoned has scour occurring near weir structures, which likely degrades potential spawning potential. During the site visit in January 2016, WSDOT biologists did not observe any carcasses, but decaying salmon smell was abundant in the stream vicinity. Project Impacts to Streambank, Streambed, and Shoreline Will there be riprap placement in the project area along streambanks or shorelines ? Â¨ Yes Ã¾ No Page 16 of 33 Will work on streambanks or shorelines improve fish habitat? Ã¾ Yes Â¨ No Describe the proposed work: Structural rock may be buried and planted along proposed streambanks that are located next to SR 531, thus it will not be exposed to fish. Stream meanders with large woody material and riparian plantings that connect to wetland habitat will provide habitat for multiple life history phases of salmon. Will the stream bed, lake bed or marine bed be disturbed? Ã¾ Yes Â¨ No What is the area of disturbance? Area: 5,110 square feet (.117 acres) If the project has a net reduced structural in-water footprint, please indicate the reduced area. Area: 413 square feet (.009 acres) Will all materials, such as riprap or gravel, placed within the water be free of rock fines, silt, soil, or other extraneous material? An exception to the presence of fines is permitted if they are required as part of channel bed reconstruction. Ã¾ Yes Â¨ No Project Impacts to Marine Mammals The NMFS programmatic only covers informal effects to marine mammals Will the project affect marine mammal migration? Â¨ Yes Ã¾ No Will there be effects to marine mammal prey species or food webs? Â¨ Yes Ã¾ No Will the project alter shorelines or other natural processes? Â¨ Yes Ã¾ No Pollution Generating Impervious Surface Will the project create new PGIS? Â¨ Yes Ã¾ No Fish Handling Will the project have fish handling? Ã¾ Yes Â¨ No Page 17 of 33 Indicate all that apply Seining Herding Electrofishing Minnow traps Other? Will an HPA be needed? Ã¾ Yes Â¨ No Number of days with in-water work 15 Project Terrestrial Impacts Total permanent vegetation impact area (all vegetation types including riparian) Area: 9,583 square feet (.22 acres) Total temporary vegetation impact area (all vegetation types) Area: 21,344 square feet (.49 acres) Total vegetation impact area (all vegetation types) Area: .71 acres (30,928 square feet) Will the project have riparian vegetation impacts? Ã¾ Yes Â¨ No Temporary riparian impact area Area: 17,424 square feet (.4 acres) Permanent riparian imapact area Area: 7,841 square feet (.18 acres) Total riparian impact area. Area: .58 acres (25,265 square feet) Indicate number and species of trees from 0-6 inches dbh that will be removed. Salmonberry, Osoberry, red alder, and reed canarygrass Indicate number and species of trees greater than 6 inches to 14 inches dbh that will be removed. Red alder (new stream alignment connections)=10 count Indicate number and species of trees greater than 14 inches dbh that will be removed. Douglas fir-2 count European birch-2 count Red alder-5 count Sitka Spruce-1 count Bigleaf maple-2 Black Cottonwood-2 Page 18 of 33 Area of on-site riparian restoration Area: 17,424 square feet (.4 acres) Area of off-site riparian restoration Area: 20,909 square feet (.48 acres) Page 19 of 33 NMFS and USFWS Pre-Approved Enhancement Projects (Fast Track ) These are projects that benefit listed species and habitat. All Fast Track projects must be submitted for final review to WSDOT Headquarters. Check the box if your project meets the stated conditions and fill in the required information. There are 6 project types. Fast Track Project Types Fast Track is an accelerated review for projects that have benefits for listed species. Fast Track is offered for both the NMFS and USFWS programmatics, but some Fast Track project types only apply to one agency, some to both. Check all that apply. 5. Will the project replace a culvert for fish passage, and there are no other activities that would result in adverse effects? Fish handling is allowed as part of this activity. USFWS coverage is allowed if there is a low risk for channel incision when listed species could be affected. Ã¾ Yes Â¨ No Page 20 of 33 Essential Fish Habitat The analysis of Essential Fish Habitat is usually conducted for all projects submitted to the National Marine Fisheries Service in conjunction with the Endangered Species Act analysis. However, an EFH analysis can be done as a stand-alone submittal. Pacific salmon EFH is based on habitat for Chinook, coho, and pink salmon. Is there Coastal Pelagic Essential Fish Habitat present in the project action area? Â¨ Yes Ã¾ No Is there Groundfish Essential Fish Habitat present in the project action area? Â¨ Yes Ã¾ No Is there Pacific Salmon Essential Fish Habitat present in the project action area? Ã¾ Yes Â¨ No Will the project adversely affect Pacific Salmon EFH? Ã¾ Yes Â¨ No Indicate the area affected Area: 10,525 square feet (.242 acres) Page 21 of 33 Project Minimization Measures Stormwater Quality and Quantity Minimization Measures MM-1. All projects (except exempt activities as listed in section 3-2.2 of the Highway Runoff Manual (HRM, WSDOT 2014), are subject to minimum stormwater management requirements as outlined in Section 3-3 of the HRM. Non-exempt projects must address erosion control if = 7,000 ft2 of soil will be disturbed or if there is = 2000 ft2 of new, replaced, or new + replaced impervious surface. Erosion control requirements include: 1) a temporary erosion and sediment control (TESC) plan (see TESC Manual), and a project specific spill prevention, control and countermeasures (SPCC) Plan as required in Standard Specification 1.07-15(1). Â¨ Yes Ã¾ No MM-2. Projects within 200 feet of surface water will install and maintain Best Management Practices (BMPs) as stated in the Temporary Erosion and Sediment Control Manual to ensure that no foreign material, such as pavement slurry from asphalt grinding equipment, is sidecast, and to control and prevent sediments from entering aquatic systems. Ã¾ Yes Â¨ No MM-3. Projects will at a minimum comply with Washington Department of Ecologyâ€™s State Water Quality Standards or permit modifications. Permit modifications are limited to temporary extension of the turbidity plume. Ã¾ Yes Â¨ No MM-4. Projects that drain to waters that may be used by listed fish species and create more than 500 ft2 of new pollution generating impervious surface in any TDA will use the most current WSDOT stormwater effects analysis guidance to evaluate the potential effects of each proposed project. The PBA Determination Form and/or supplemented documents must include the following information at a minimum: 1) Sufficient information to assess pre-project and post-project stormwater pollutant loadings and end of pipe concentrations. 2) Identify the receiving waterbodies for the stormwater runoff associated with the new pollution generating impervious surface. 3) Identify any proposed new (or modified) stormwater outfalls/structures. Â¨ Yes Ã¾ No MM-4 cont'd. 4) A qualitative or quantitative description of pre-and post-project mixing zones or dilution analysis, consistent with WSDOT stormwater effects analysis guidance. If exposure to listed fish species in the dilution zone cannot be discounted, a quantitative description is recommended. 5) Describe potential effects to hydrology (i.e., peak flows, base flows, flow durations, etc.) and in-stream conditions (i.e., bed and bank scour or erosion, channel stability, etc.) due to the proposed project. Â¨ Yes Ã¾ No MM-5. The project will not cause or contribute to bed or bank scour or erosion (channel instability), and will not measurably affect base, peak, or flow durations in any Threshold Discharge Area (TDA) or receiving waterbody. Â¨ Yes Ã¾ No MM-6. Stormwater will be infiltrated and/or dispersed when possible. Â¨ Yes Ã¾ No Page 22 of 33 Aquatic Area Buffers Minimization Measures MM-7. No contractor staging areas will be allowed within 200 feet of potentially suitable wetland, stream, estuarine, river or marine drainage as identified by the project biologist, unless site specific review completed by the project biologist indicates that no impacts to the sensitive resource areas will occur due to topography or other factors. Ã¾ Yes Â¨ No MM-8. Temporary material storage piles consisting of erosive materials will be placed outside the 100-year floodplain during the rainy season (October 1 through June 1) except for emergency projects, or unless site specific review completed by the project biologist indicates that topography or other factors preclude runoff from entering waterbodies containing listed fish species or their prey. Such temporary storage piles will be stabilized with plastic sheeting, straw bales, or other BMPs, to prevent sediment delivery to these waterbodies. Material to be used within 12 hours of deposition will not be considered a temporary material storage pile. Ã¾ Yes Â¨ No MM-9. All excavated materials will be removed to an upland location where they cannot enter the water body. Ã¾ Yes Â¨ No Vegetation Removal Minimization Measures MM-10. To facilitate compliance with the Northwest Forest Plan Standards and Guidelines, WSDOT will coordinate with the appropriate Forest Service ranger district if tree removal, including dying, dead, or downed wood is proposed on lands identified in the plan Â¨ Yes Ã¾ No MM-11. Minimize removal of riparian vegetation and replant riparian vegetation. Replanting may not be possible in permanent impact areas, the roadway clear zone, or adjacent to or under bridges. However, potential replanting of riparian vegetation near the site should be evaluated. The PBA Determination Form will provide the justification for the removal of riparian vegetation and will include the proposed replanting plans, if applicable. Ã¾ Yes Â¨ No MM-12. Vegetation will only be grubbed from areas undergoing permanent alteration. No grubbing will occur in areas slated for temporary impacts. Ã¾ Yes Â¨ No MM-13. Disturbance to riparian vegetation from the operation of heavy equipment will be minimized as practicable by straddling it with heavy equipment or by pruning it without damaging the roots. Existing riparian vegetation outside of the work area will not be removed or disturbed. Ã¾ Yes Â¨ No Page 23 of 33 In-Water Work Minimization Measures MM-14. Seasonal restrictions applied to work conducted within or below the OHWM or MHHW, will follow requirements within the HPA issued by the Washington Department of Fish and Wildlife, and Water Quality Standards for Surface Waters of the State of Washington (Chapter 173-201A WAC). In-water work duration will be minimized as practicable. Ã¾ Yes Â¨ No MM-15. No temporary floating work platform will place its anchors or allow grounding in fish spawning areas in freshwater or in eelgrass, kelp, macro algae, or intertidal wetlands. Anchoring above beds or eelgrass, kelp, or macro algae will be kept to a minimum. Â¨ Yes Ã¾ No MM-16. Construction equipment will not enter any water body without authorization from the Washington Department of Fish and Wildlife, USFWS, and the NMFS. Equipment will be operated as far from the waterâ€™s edge as possible. Ã¾ Yes Â¨ No MM-17. Anthropogenic debris from bridge demolition will be directed toward storage areas on land or barges. Bridge demolition will include sectioning the structure to the extent possible to provide for safer disposal and to minimize debris falling into surface waters. Â¨ Yes Ã¾ No Revegetation and Slope Stability Minimization Measures MM-18. All unstable slopes resulting from construction activities with a high likelihood of delivery of material to listed species-bearing waters will be stabilized within 2 days from October 1 to April 30, and within 7 days from May 1 to September 30. Ã¾ Yes Â¨ No MM-19. Temporarily disturbed areas will be restored to pre-work conditions to the extent possible, including protecting existing root systems and allowing re-sprouting of herbaceous and woody plants. Native trees and shrubs will be used that are endemic to the project vicinity or region of the State where the activity is occurring. Ã¾ Yes Â¨ No MM-20. All exposed areas will be mulched and seeded with an approved native or noninvasive herbaceous seed mix following construction and/or planted with native woody vegetation and trees (if appropriate) during the first available planting season. Ã¾ Yes Â¨ No General Construction Minimization Measures MM-21. Construction impacts will be confined to the minimum area necessary to complete the project. Ã¾ Yes Â¨ No Page 24 of 33 MM-22. Boundaries of clearing limits will be clearly flagged to prevent disturbance outside of the limits. Ã¾ Yes Â¨ No Pollutant Protection Minimization Measures MM-23. BMPs, as stated in the Highway Runoff Manual, will be used to ensure that no foreign material such as oil or fuel from construction equipment will enter any wetlands, flowing or standing water. Ã¾ Yes Â¨ No MM-24. All equipment will be fueled and maintained more than 200 feet from the nearest wetland, ditches, flowing or standing water, unless site specific review completed by the project biologist indicates that no impacts to the resource areas will result due to topography or other factors. Exceptions to this requirement are allowed for large cranes, pile drivers, and drill rigs if they cannot be easily moved. Ã¾ Yes Â¨ No MM-25. Equipment will be checked daily for leaks and will be well maintained to prevent lubricants and any other deleterious materials from entering waters of the State. Prior to entering the water or below the OHWM, all equipment will be free of any external petroleum products, hydraulic fluid, coolants, and other deleterious materials. Wash water will not be discharged to any water body without pre-treatment. Ã¾ Yes Â¨ No MM-26. All equipment entering waters that may be used by listed fish species and/or if the waters are critical habitat, will use vegetable oil or other biodegradable acceptable hydraulic fluid substitute, unless the project is an emergency action. Ã¾ Yes Â¨ No Access Roads and Bridges Minimization Measures MM-30. The establishment and use of temporary access roads will meet the following conditions: 1) Existing roadways or travel paths will be used whenever they provide the needed access. 2) Where stream crossings are essential, the crossing design will accommodate reasonably foreseeable risks (such as flooding and associated bedload and debris) to prevent diversion of stream flow out of the channel and down the road in the event of a crossing failure. 3) Vehicles and machinery must cross riparian areas and streams perpendicular to the main channel unless site specific conditions require an alternate approach. 4) Vehicles and machinery will not cross within a wetted stream, unless necessary as part of an emergency action. The PBA Determination Form must state why avoidance of crossing a wetted stream is not possible if proposed as part of an emergency action. Ã¾ Yes Â¨ No MM-30 cont'd. 5) Temporary roads within 300 feet of streams will avoid, minimize, and mitigate soil disturbance and compaction by clearing vegetation to ground level, and placing clean gravel over geotextile fabric. 6) Vehicles and machinery operating below the OHWM (except if operating in the dry or during emergency actions) will use biodegradable hydraulic fluids and lubricants to reduce the potential impacts associated a potential oil spill or leak. 7) The number of stream crossings will be minimized. Ã¾ Yes Â¨ No Page 25 of 33 MM-31. New stream crossing structures, including channel-spanning bridges, will not reduce the existing stream width. Ã¾ Yes Â¨ No Bank Protection Minimization Measures MM-49. If site-specific conditions allow, improve fish habitat by incorporating LWD into bank protection projects. Ã¾ Yes Â¨ No MM-50. Installation of riprap and other materials will occur from the banks or outside the wetted perimeter as much as possible. Ã¾ Yes Â¨ No MM-51. Project areas with existing riprap will be allowed to increase the lineal distance of the riprapped area below the OHWM by an additional 5 percent. If the project footprint needs to be increased beyond this, riprap placement will demonstrate consistency with the Integrated Streambank Protection techniques that are defined for WSDOT projects (see Working Document) Ã¾ Yes Â¨ No MM-52. All materials, such as riprap or gravel, placed within the water will be free of rock fines, silt, soil, or other extraneous material. An exception to the presence of fines is permitted if they are required as part of channel bed reconstruction. Ã¾ Yes Â¨ No Work Area Isolation and Fish Handling Minimization Measures MM-53. Listed fish species, including their forage fish, will be removed from the work area prior to any in-water work activities, unless removal would affect the individuals more than leaving them on-site. Fish exclusion activities will follow the most recent WSDOT protocol that has been approved by the NMFS and USFWS. Ã¾ Yes Â¨ No MM-54. Water pumped out of the isolated project area will be discharged to a temporary storage and treatment site or to upland areas and filtered through vegetation prior to reentering the stream channel. Ã¾ Yes Â¨ No MM-55. All intake pumps within fish bearing streams will have a fish screen installed, operated and maintained. Screening techniques must utilize the specifications in the HPA and be in compliance with RCW 77.55.010, RCW 77.57.040 and RCW 77.57.070 or the specifications in the NMFS Anadromous Salmonid Passage Facility Design manual (2008) and NMFS Fish Screening Criteria for Anadromous Salmonids (1997), whichever is more restrictive. Ã¾ Yes Â¨ No MM-56. Temporary diversion structures will be non-erosive (e.g., sand bags filled with clean gravel and covered with plastic sheeting, portable bladder dam). Ã¾ Yes Â¨ No Page 26 of 33 MM-57. Temporary bypass systems will utilize non-erosive techniques, such as pipe or a plastic-lined channel that will accommodate the predicted peak flow rate during construction. Ã¾ Yes Â¨ No MM-58. Temporary bypass structures will have energy dissipaters at the outflow to prevent erosion. Ã¾ Yes Â¨ No MM-59. Work area isolation, fish capture and removal, and dewatering/re-watering are conducted using the WSDOT Fish Exclusion Protocols and Standards. Implementing these factors depends to some degree on local conditions and the professional judgment of the biologist. If block nets are in use, they will be checked 3 times daily for the first 48 hours after block net installation, and for the first 24 hours after significant rainfall. Flows shall be gradually reintroduced to the isolated work area, to prevent channel bed or bank instability, excessive scour, or turbidity and sedimentation. The directing biologist shall inspect the work area downstream reach to ensure no fish are stranded or in distress during reintroduction of flows. Ã¾ Yes Â¨ No MM-60. Upon completion of all in-water work, all stream diversion devices, equipment, pipe, and conduits will be removed and disturbed soil will be restored after diversions are removed. Streambank plantings may occur at a later date during the planting season. Ã¾ Yes Â¨ No MM-61. Projects will not inhibit passage of any listed fish species life stage following completion. When feasible, a bypass system will be installed during construction to permit both upstream and downstream passage of listed fish and their prey. Ã¾ Yes Â¨ No Culvert Work Minimization Measures MM-62. Culvert cleaning, repair, and maintenance will occur during the dry or when listed fish are least likely to be present. Â¨ Yes Ã¾ No MM-63. For waters that may be used by listed fish species and include critical habitat, culvert cleaning will occur either by hand or from the top of the bank when flow is in the channel or when the stream is either dry or a flow bypass is installed. Â¨ Yes Ã¾ No MM-64. All culverts conveying fish bearing streams will be designed and constructed in accordance with WDFWâ€™s Water Crossing Design Guidelines (Barnard et al. 2013) or most current document and related Washington Administrative Code criteria. Culverts must be designed to either meet the â€œno slopeâ€ or the â€œstream simulationâ€ model design, whichever is most appropriate. Ã¾ Yes Â¨ No MM-65. Repair or extension of culverts that are partial or complete fish passage barriers will incorporate measures to improve fish passage for all life stages. The retrofit of an existing culvert to provide fish passage will require approval of the project design from the WDFWâ€™s Area Habitat Biologist and WDFWâ€™s Area Engineer. Ã¾ Yes Â¨ No Page 27 of 33 Cutting and Filling Minimization Measures MM-66. Fill material will only be placed in specified and permitted locations. Fill placement may be permanent or temporary and will be located in a way that minimizes impacts to sensitive areas. Ã¾ Yes Â¨ No MM-67. Temporary fills must be entirely removed and the site restored to pre-existing contours. Ã¾ Yes Â¨ No Herbicide Use Minimization Measures MM-75. Herbicides will not be used within 200 ft of listed fish species spawning and rearing streams unless site specific review completed by the project biologist indicates that topography or other factors preclude herbicides from reaching spawning and rearing stream occupied by listed fish species. Â¨ Yes Ã¾ No Lighting Minimization Measures MM-76. Temporary lights for night work will be directed away from waters with listed fish species to the greatest extent possible, with the intent to prevent light from shining on surface waters. Ã¾ Yes Â¨ No MM-77. When permanent lighting is needed on a bridge or road segment adjacent to surface waters with listed fish species, individual â€œcobra headâ€ or similar lamps will be used when possible, rather than area lights that illuminate larger areas. Lights will be directed away from waters with listed fish species to the extent possible. Â¨ Yes Ã¾ No MM-78. Walkways and bicycle lanes on bridges will be lit from below if possible to minimize nighttime light exposure of waters with listed fish species. Â¨ Yes Ã¾ No MM-79. When permanent lighting is needed on a road segment adjacent to prairie species habitat, individual â€œcobra headâ€ or similar lamps will be used when possible, rather than area lights that illuminate larger areas. Lights will be directed away from prairie species habitat to the extent possible. Â¨ Yes Ã¾ No Geotechnical Investigations Minimization Measures MM-80. For Geotechnical Drilling: No geared mechanisms (e.g., tires, tracks) will enter the wetted perimeter of a waterbody. Truck mounted and tracked drilling equipment will work from a location outside of the wetted perimeter unless working off a temporary floating work platform or barge. The temporary work platform will not ground on the bed of State waters. Â¨ Yes Ã¾ No Page 28 of 33 Minimization Measures Documentation Will the project use all applicable minimization measures? Ã¾ Yes Â¨ No Indicate which minimization measures will not be used and why. MM 75-Selective weed control with herbicides will generally be used to treat the adjacent wetland in the buffer of Edgecomb Creek. The entire buffer will be treated in the summer with selective weed control when flows are low in the creek. Recommendations have been made to clear the blackberry and reed canarygrass after treating it to reduce amount of potential herbicide in aquatic areas. Adjacent wetland is disconnected hydrologically from Edgecomb Creek during summer time. Biologist indicates that weed reduction in buffer areas will result in a net functional lift for salmon habitat. Vicinity Map & Photos Page 29 of 33 Page 30 of 33 Page 31 of 33 Page 32 of 33 Page 33 of 33 Appendix H â€” Qualifications All field inspections, jurisdictional wetland boundary delineations, habitat assessments, and supporting documentation, including this Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan prepared for the Centennial Park project site were prepared by, or under the direction of, Jon Pickett of SVC. In addition, the site investigations were performed by Erin Harker, and report preparation was completed by Rachael Hyland. Jon Pickett Senior Environmental Planner Professional Experience: 9 years Jon Pickett is a Senior Scientist/Environmental Planner with diverse professional experience in habitat development as a Regional Biologist and Environmental Project Manager, with an emphasis in wetland restoration and enhancement. Jon has extensive experience successfully planning, developing, securing funding, managing and implementing numerous large-scale wetland habitat projects aimed at restoring the biological and physical functions of wetlands throughout Californiaâ€™s Central Valley and Southern California. During this time he managed a 2,200 acre private wetland and upland habitat complex as a public trust resource for conservation and consumptive use. He worked to ensure projects were designed and implemented to achieve habitat restoration goals, including reclamation of wetland and floodplain habitats, reintroduction of aquatic complexity and habitat, and reestablishment of riparian corridor. Jon has worked with Federal and State agencies and private entities on land acquisitions for conservational habitat and public use, including prioritizing acquisitions relative to value and opportunity and funding. In addition, Jon has experience in regulatory coordination to ensure projects operated in compliance with Federal, State and local environmental regulations, preparing permit documentation, coordinating with all pertinent agencies and stakeholders, and developing and maintaining appropriate permitting timelines to ensure timely approvals. He also oversaw earthwork construction components and revegetation efforts, as well as post-project monitoring, with an emphasis in native vegetation establishment and natural channel morphology. Jon earned a Bachelor of Science degree in Natural Resource Sciences from Washington State University and Bachelor of Science Minor in Forestry from Washington State University. He has been formally trained in the use of the Washington State Wetland Rating System, USACE 40-hour wetland delineation training, Determination of Ordinary High Water Mark, Using Field Indicators for Hydric Soils, and the Washington State Department of Ecology Credit and Debit Method. Erin Harker Staff Wetland Scientist Professional Experience: 3 years Erin Harker is a Staff Wetland Scientist with diverse ecological experience in both field and laboratory settings in the Pacific Northwest. She has gained hands-on experience involving research on water quality, salmon runs, amphibian surveys, restoration project performance, and marine mammal hydro- acoustics. Erin is proficient in collecting and analyzing environmental data; riparian restoration and wetland mitigation monitoring principles and techniques; analyzing local, state, and federal 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 environmental code and regulations; and technical writing. Erin has additional experience engaging students and volunteers in a suite of environmental curriculums. She currently performs wetland, ordinary high water, and forensic delineations, in addition to assisting clients through the various stages of land use planning by conducting environmental code analysis; preparing environmental assessments, mitigation reports, and biological evaluations; and completing permit applications. Erin graduated from Western Washington University with a Bachelor of Science degree in Environmental Science with a Marine Ecology focus. She has received has received 40-hour Wetland Delineation Training through the USACE and formal training through the WSDOE and Coastal Training Program in conducting forage fish surveys; using the credit-debit system for estimating wetland mitigation needs, determining the ordinary high water mark; Puget Sound coastal processes; conducting eelgrass delineations; using the 2014 wetland rating system; using field indicators for hydric soils; and administering permits in the shoreline jurisdiction. Rachael Hyland Environmental Scientist Professional Experience: 5 years Rachael Hyland is a wetland profession in training (WPIT) through the Society of Wetland Scientists and a Certified Associated Ecologist through the Ecological Society of America. Rachael has a background in wetland and ecological habitat assessments in various states, most notably Connecticut, Massachusetts, Rhode Island, and Ohio. She has experience in assessing tidal, stream, and wetland systems, reporting on biological evaluations, permitting, and site assessments. She also has extensive knowledge of bats and White Nose Syndrome (Pseudogymnoascus destructans), a fungal disease attacking bats, which was recently documented in Washington. Rachael earned a Bachelor of Science degree in Ecology and Evolutionary Biology from the University of Connecticut, with additional ecology studies at the graduate level. Rachael has completed Basic Wetland Delineator Training with the Institute for Wetland Education and Environmental Research, received 40-hour USACE wetland delineation training, and received formal training from the Washington State Department of Ecology in Selecting Wetland Mitigation Sites Using a Watershed Approach. 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan February 10, 2019 0 0 LEGEND + 6 22+00 PROPOSED STREAM ALIGNMENT 6+00 M 145 A EXISTING CULVERT T EXISTING STREAM CENTERLINE C TO BE ABANDONED H S L EXISTING INDEX CONTOUR E I E N E EXISTING INTERMEDIATE CONTOUR S H S E T E A LIMITS OF EXCAVATION T E H C LIMITS OF FILL Y S 2 2 4 + EXISTING EDGE OF PAVEMENT SR 531 1 5 . 7 EXISTING CULVERT 1 150 145 10:1 24+00 LARGE WOODY MATERIAL TYPE B (TYP) (SEE NOTE 2) 0:1 1 2 : 1 % 1 0 : 2 FILL OLD CREEKBED (SEE NOTE 1) 1 1 1 0 0% 0:1 : : 2 1 1 1 145 : 0:1 0 2 0 10:1 + 1 0 0 5 :1 % 2 :1 2:1 1 0 : 1 LARGE WOODY MATERIAL TYPE D (TYP) 0 1 2 0 0 : (SEE NOTE 2) :1 1 + K 2 E 2 E % R 155 2:1 2 23 0 C :1 +0 B 2:1 0 M 0% CO 1 % DGE : 0 E 1 0 0 1 :1 1 : 10:1 2 10 :1 2:1 0 % 1 2 : 1 1 : 0 + 2 1 0 :1 2:1 0 2 LARGE WOODY MATERIAL TYPE A (TYP) (SEE NOTE 2) E C 140 L IN E 140 BEGIN CHANNEL GRADING EC 20+00.00 150 145 NOTES: 0 10 20 1. FILL OLD CREEKBED. AT THE NORTH END START AT ELEVATION 142.1â€™ . SCALE IN FEET TAPER TO MATCH NEW EDGE OF STREAMBED. TAPER TO PREVENT WATER FROM FLOWING INTO OLD STREAMBED. LARGE WOODY MATERIAL TYPE C (TYP) 2. SEE SHEETS HYD2 AND HYD3 FOR LARGE WOODY MATERIAL DETAILS. (SEE NOTE 2) PRELIMINARY - NOT FOR CONSTRUCTION FILE NAME X:\AA_NewX\Projects\SR531\MP008.71_XL0000 Edgecomb Creek\CAD\Sheet_Files\Edgecomb Creek Sheets.dgn Plot 1 TIME 2:25:44 PM REGION STATE FED.AID PROJ.NO. PLAN REF NO NO. SR 531 DATE 7/18/2016 HYS1 WASH EDGECOMB CREEK PLOTTED BY lapoinc DESIGNED BY L. ASSINK JOB NUMBER Washington State FISH PASSAGE SHEET ENTERED BY C. LAPOINTE 1 CHECKED BY J. HIELMAN CONTRACT NO. LOCATION NO. Department of Transportation OF 7 PROJ. ENGR. J.CHI STREAM PLAN DATE DATE SHEETS REGIONAL ADM. L. ENG REVISION DATE BY P.E. STAMP BOX P.E. STAMP BOX LEGEND 22+00 PROPOSED STREAM ALIGNMENT WING WALL EXISTING STRUCTURE 155 EXISTING WEIR 160 LIMITS OF EXCAVATION LIMITS OF FILL EXISTING EDGE OF PAVEMENT EXISTING CULVERT 1 53 SR EXISTING INDEX CONTOUR 155 EXISTING INTERMEDIATE CONTOUR 0% EXISTING STUMP EXISTING CULVERT 150 TO BE ABANDONED 1 : 00 0 2 6+ 1 :1 2 1 2:1 : 0 155 1 0 % 155 150 0 PRECAST CONCRETE BOX % 2:1 16â€™ WIDE X 6â€™ HIGH 2 155 : 1 10:1 2:1 E IN L 1 0 EC : 1 1 25+00 0 : 1 1 2: 10:1 END CHANNEL GRADING EC 26+65.16 M EK 160 A 155 E T CR C 2 H B : :1 1 :1 2 M S 10 O L E C I E E N G E D S E H S E T A 1 E 0 T : E 1 0:1 165 H C 1 :1 1 Y 0 2 S 2 : 2 1 4 1 : + 1 1 5 . 7 1 170 2 165 : 1 160 175 170 180 0 10 20 SCALE IN FEET NOTES: 1. CUT/FILL LINE IS FOR ILLUSTRATION ONLY. FINAL LIMITS OF EXCAVATION TO BE DETERMINED BE STRUCTURE TYPE AND LOCATION. PRELIMINARY - NOT FOR CONSTRUCTION FILE NAME X:\AA_NewX\Projects\SR531\MP008.71_XL0000 Edgecomb Creek\CAD\Sheet_Files\Edgecomb Creek Sheets.dgn Plot 2 TIME 2:25:44 PM REGION STATE FED.AID PROJ.NO. PLAN REF NO NO. SR 531 DATE 7/18/2016 HYS2 WASH EDGECOMB CREEK PLOTTED BY lapoinc DESIGNED BY L. ASSINK JOB NUMBER Washington State FISH PASSAGE SHEET ENTERED BY C. LAPOINTE 2 CHECKED BY J. HIELMAN CONTRACT NO. LOCATION NO. Department of Transportation OF 7 PROJ. ENGR. J.CHI STREAM PLAN DATE DATE SHEETS REGIONAL ADM. L. ENG REVISION DATE BY P.E. STAMP BOX P.E. STAMP BOX Centennial Park 18386.20 July 30, 2019 Drainage Report Section VII, Page 1 Section VII â€“ Other Permits Section VII Summary Narrative This project will require the following additional permits/approvals beyond those required by the City of Arlington. 1. Construction Stormwater General Permit by the Washington State Department of Ecology. 2. The potentially unregulated channel needs to be approved as unregulated by the Department of Natural Resources prior to any work occurring within the buffer or channel. The current proposal does not include this work. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section VIII, Page 1 Section VIII â€“ Operation and Maintenance Manual Section VIII Summary Narrative The Operation and Maintenance Manual is a standalone document that will be given to the property manager following the construction of the project. The contractor will be responsible for the maintenance and operation of all stormwater structures and BMPs requiring maintenance during construction and, after construction, responsibility will pass to the property management company. The manual shall be kept in the offices of the proposed buildings. Upon request by the City, it shall be made available for their inspection. It is generally expected that few to none of these defects will be present upon the yearly inspection of each facility. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section VIII, Page 2 Centennial Park 67th Ave and 172nd Street NE Arlington, WA 98223 OPERATION AND MAINTENANCE MANUAL Date: July 2019 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section VIII, Page 3 Operation and Maintenance Manual This Operation and Maintenance Manual has been created for Centennial Park, a 8.81 ac site located at 67th Ave and 172nd Street NE Arlington, WA 98223. The proposed stormwater management system consists of catch basins, water quality systems, and conveyance pipes that collect runoff from roofs, parking, and new landscaping, and route them to gravel infiltration trenches under parking lots throughout the site. Included in this Operation and Maintenance Manual is an 11â€ x 17â€ grading and drainage plan sheet showing the locations of the infiltration system and catch basins. Please note that this map is generated during the design phase and may not reflect all changes made in permitting and construction. CG Engineering may be contacted for an updated copy of this map once the as-built drawings are completed for the site. Maintenance sheets from the 2014 Stormwater Management Manual for Western Washington are included for the following facilities: Catch Basins: Concrete structures with steel grates that collect stormwater runoff from the site and act as junctions for storm conveyance pipes. See â€œNo. 5â€ for maintenance. Gravel Infiltration Trench: Subsurface trenches backfilled with a coarse stone aggregate, allowing for temporary storage of stormwater runoff in the voids of the aggregate. Runoff is distributed through the trench with a perforated pipe and gradually infiltrates into the surrounding soil. Vegetation Management: Landscaping can include grading, soil transfer, vegetation removal, pesticide and fertilizer applications, and watering. Stormwater contaminants include toxic organic compounds, heavy metals, oils, total suspended solids, coliform bacteria, fertilizers, and pesticides. Facilities shall be inspected for defects listed in the following facility sheets. Most maintenance tasks are generally reactionary to a defect being found, rather than a matter of constant upkeep. It is generally expected that few to none of these defects will be present upon the yearly inspection of each facility. The facility sheets list the potential conditions warranting maintenance and the expected result following any maintenance. Several engineerâ€™s notes for specific tasks are provided within the facility sheets. Unless otherwise noted on the facility sheets the maintenance tasks should be performed on an â€œas neededâ€ basis: (a) When the described defect is visible to whomever performs the yearly inspection, (b) Should any defect become apparent between inspections. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Section VIII, Page 4 SAMPLE ACTIVITY LOG DATE FACILITY MAINTENANCE PERFORMED RESULTS / NOTES 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 1 Appendix A â€“ WWHM Reports Appendix A Summary Trench (p. A-2) All the trenches were first sized as one and then were divided to fit on-site. The total surface area of all the designed trenches across the site is more than the surface area that the original trench had per the WWHM output. The surface area The WWHM reports for the infiltration trenches demonstrate compliance with Minimum Requirement #5 and On-Site Stormwater Management and Minimum Requirement #7. The below WWHM output for the infiltration trench shows that the area including the ROW sidewalk and the two driveways off 67th Ave can bypass the infiltration trench and the system can still pass the point of compliance for flow control. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 2 WWHM2012 PROJECT REPORT Project Name: 100% Infiltration with Bypass Area Site Name: Centennial Park Site Address: 67th Ave and 172nd St NE City : Arlington Report Date: 6/17/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 Low Flow Threshold for POC 1 : 50 Percent of the 2 Year High Flow Threshold for POC 1: 50 year PREDEVELOPED LAND USE Name : Total Site with ROW no wetland/stream Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat 4.571 C, Forest, Mod .46 C, Forest, Steep 1.324 Pervious Total 6.355 Impervious Land Use acre Impervious Total 0 Basin Total 6.355 Element Flows To: Surface Interflow Groundwater 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 3 MITIGATED LAND USE Name : Site Area (no wetland/stream) to infiltration trench Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat 1.677 Pervious Total 1.677 Impervious Land Use acre ROOF TOPS FLAT 1.323 DRIVEWAYS FLAT 1.827 SIDEWALKS FLAT 0.789 Impervious Total 3.939 Basin Total 5.616 Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 1 Gravel Trench Bed 1 Name : Gravel Trench Bed 1 Bottom Length: 1850.00 ft. Bottom Width: 20.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 943.976 Total Volume Through Riser (ac-ft.): 0.006 Total Volume Through Facility (ac-ft.): 943.982 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 4 Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.849 0.000 0.000 0.000 0.0167 0.849 0.005 0.000 0.805 0.0333 0.849 0.009 0.000 0.805 0.0500 0.849 0.014 0.000 0.805 0.0667 0.849 0.019 0.000 0.805 0.0833 0.849 0.024 0.000 0.805 0.1000 0.849 0.029 0.000 0.805 0.1167 0.849 0.034 0.000 0.805 0.1333 0.849 0.039 0.000 0.805 0.1500 0.849 0.044 0.000 0.805 0.1667 0.849 0.049 0.000 0.805 0.1833 0.849 0.054 0.000 0.805 0.2000 0.849 0.059 0.000 0.805 0.2167 0.849 0.064 0.000 0.805 0.2333 0.849 0.069 0.000 0.805 0.2500 0.849 0.074 0.000 0.805 0.2667 0.849 0.079 0.000 0.805 0.2833 0.849 0.084 0.000 0.805 0.3000 0.849 0.089 0.000 0.805 0.3167 0.849 0.094 0.000 0.805 0.3333 0.849 0.099 0.000 0.805 0.3500 0.849 0.104 0.000 0.805 0.3667 0.849 0.109 0.000 0.805 0.3833 0.849 0.114 0.000 0.805 0.4000 0.849 0.118 0.000 0.805 0.4167 0.849 0.123 0.000 0.805 0.4333 0.849 0.128 0.000 0.805 0.4500 0.849 0.133 0.000 0.805 0.4667 0.849 0.138 0.000 0.805 0.4833 0.849 0.143 0.000 0.805 0.5000 0.849 0.148 0.000 0.805 0.5167 0.849 0.153 0.000 0.805 0.5333 0.849 0.158 0.000 0.805 0.5500 0.849 0.163 0.000 0.805 0.5667 0.849 0.168 0.000 0.805 0.5833 0.849 0.173 0.000 0.805 0.6000 0.849 0.178 0.000 0.805 0.6167 0.849 0.183 0.000 0.805 0.6333 0.849 0.188 0.000 0.805 0.6500 0.849 0.193 0.000 0.805 0.6667 0.849 0.198 0.000 0.805 0.6833 0.849 0.203 0.000 0.805 0.7000 0.849 0.208 0.000 0.805 0.7167 0.849 0.213 0.000 0.805 0.7333 0.849 0.218 0.000 0.805 0.7500 0.849 0.223 0.000 0.805 0.7667 0.849 0.227 0.000 0.805 0.7833 0.849 0.232 0.000 0.805 0.8000 0.849 0.237 0.000 0.805 0.8167 0.849 0.242 0.000 0.805 0.8333 0.849 0.247 0.000 0.805 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 5 0.8500 0.849 0.252 0.000 0.805 0.8667 0.849 0.257 0.000 0.805 0.8833 0.849 0.262 0.000 0.805 0.9000 0.849 0.267 0.000 0.805 0.9167 0.849 0.272 0.000 0.805 0.9333 0.849 0.277 0.000 0.805 0.9500 0.849 0.282 0.000 0.805 0.9667 0.849 0.287 0.000 0.805 0.9833 0.849 0.292 0.000 0.805 1.0000 0.849 0.297 0.000 0.805 1.0167 0.849 0.302 0.000 0.805 1.0333 0.849 0.307 0.000 0.805 1.0500 0.849 0.312 0.000 0.805 1.0667 0.849 0.317 0.000 0.805 1.0833 0.849 0.322 0.000 0.805 1.1000 0.849 0.327 0.000 0.805 1.1167 0.849 0.332 0.000 0.805 1.1333 0.849 0.336 0.000 0.805 1.1500 0.849 0.341 0.000 0.805 1.1667 0.849 0.346 0.000 0.805 1.1833 0.849 0.351 0.000 0.805 1.2000 0.849 0.356 0.000 0.805 1.2167 0.849 0.361 0.000 0.805 1.2333 0.849 0.366 0.000 0.805 1.2500 0.849 0.371 0.000 0.805 1.2667 0.849 0.376 0.000 0.805 1.2833 0.849 0.381 0.000 0.805 1.3000 0.849 0.386 0.000 0.805 1.3167 0.849 0.391 0.000 0.805 1.3333 0.849 0.396 0.000 0.805 1.3500 0.849 0.401 0.000 0.805 1.3667 0.849 0.406 0.000 0.805 1.3833 0.849 0.411 0.000 0.805 1.4000 0.849 0.416 0.000 0.805 1.4167 0.849 0.421 0.000 0.805 1.4333 0.849 0.426 0.000 0.805 1.4500 0.849 0.431 0.000 0.805 1.4667 0.849 0.436 0.015 0.805 1.4833 0.849 0.441 0.043 0.805 1.5000 0.849 0.445 0.078 0.805 Name : ROW and site to Bypass Bypass: Yes GroundWater: No Pervious Land Use acre C, Lawn, Flat .25 Pervious Total 0.25 Impervious Land Use acre SIDEWALKS FLAT 0.489 Impervious Total 0.489 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 6 Basin Total 0.739 Element Flows To: Surface Interflow Groundwater ANALYSIS RESULTS Stream Protection Duration Predeveloped Landuse Totals for POC #1 Total Pervious Area:6.355 Total Impervious Area:0 Mitigated Landuse Totals for POC #1 Total Pervious Area:1.927 Total Impervious Area:4.428 Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.241518 5 year 0.376867 10 year 0.4826 25 year 0.635403 50 year 0.763771 100 year 0.905112 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.292351 5 year 0.410162 10 year 0.498756 25 year 0.623383 50 year 0.725855 100 year 0.836948 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 7 Stream Protection Duration Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.247 0.340 1950 0.262 0.369 1951 0.216 0.324 1952 0.181 0.270 1953 0.152 0.365 1954 0.827 0.490 1955 0.305 0.340 1956 0.264 0.150 1957 0.334 0.286 1958 0.434 0.747 1959 0.232 0.260 1960 0.223 0.287 1961 0.586 0.986 1962 0.222 0.301 1963 0.365 0.410 1964 0.262 0.203 1965 0.197 0.228 1966 0.122 0.241 1967 0.246 0.518 1968 0.300 0.303 1969 0.753 0.682 1970 0.167 0.223 1971 0.276 0.337 1972 0.199 0.441 1973 0.183 0.346 1974 0.433 0.432 1975 0.175 0.342 1976 0.172 0.223 1977 0.146 0.216 1978 0.170 0.161 1979 0.482 0.411 1980 0.226 0.230 1981 0.172 0.225 1982 0.227 0.216 1983 0.397 0.330 1984 0.223 0.282 1985 0.282 0.378 1986 0.652 0.411 1987 0.303 0.348 1988 0.161 0.273 1989 0.181 0.294 1990 0.210 0.217 1991 0.219 0.251 1992 0.165 0.277 1993 0.152 0.209 1994 0.154 0.220 1995 0.222 0.189 1996 0.408 0.311 1997 0.782 0.382 1998 0.144 0.391 1999 0.182 0.162 2000 0.138 0.602 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 8 2001 0.057 0.184 2002 0.208 0.178 2003 0.163 0.242 2004 0.272 0.524 2005 0.193 0.235 2006 0.535 0.317 2007 0.424 0.311 2008 0.575 0.232 2009 0.170 0.238 Stream Protection Duration Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.8269 0.9862 2 0.7824 0.7473 3 0.7531 0.6823 4 0.6523 0.6015 5 0.5857 0.5243 6 0.5750 0.5182 7 0.5348 0.4904 8 0.4822 0.4411 9 0.4336 0.4319 10 0.4332 0.4115 11 0.4236 0.4110 12 0.4084 0.4104 13 0.3971 0.3911 14 0.3653 0.3816 15 0.3341 0.3777 16 0.3050 0.3693 17 0.3029 0.3650 18 0.2999 0.3483 19 0.2824 0.3462 20 0.2756 0.3417 21 0.2719 0.3402 22 0.2637 0.3395 23 0.2620 0.3374 24 0.2616 0.3301 25 0.2473 0.3239 26 0.2458 0.3173 27 0.2317 0.3109 28 0.2266 0.3106 29 0.2265 0.3028 30 0.2235 0.3009 31 0.2228 0.2945 32 0.2225 0.2870 33 0.2218 0.2865 34 0.2193 0.2822 35 0.2164 0.2774 36 0.2103 0.2726 37 0.2076 0.2703 38 0.1985 0.2597 39 0.1965 0.2505 40 0.1926 0.2420 41 0.1828 0.2410 42 0.1817 0.2376 43 0.1813 0.2355 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 9 44 0.1810 0.2324 45 0.1750 0.2299 46 0.1723 0.2277 47 0.1717 0.2248 48 0.1702 0.2228 49 0.1695 0.2226 50 0.1665 0.2201 51 0.1650 0.2170 52 0.1630 0.2163 53 0.1611 0.2157 54 0.1538 0.2093 55 0.1524 0.2035 56 0.1521 0.1893 57 0.1461 0.1844 58 0.1442 0.1782 59 0.1377 0.1618 60 0.1224 0.1614 61 0.0571 0.1497 Stream Protection Duration POC #1 The Facility PASSED The Facility PASSED. Flow(cfs) Predev Mit Percentage Pass/Fail 0.1208 16213 1756 10 Pass 0.1273 13691 1470 10 Pass 0.1337 11775 1270 10 Pass 0.1402 9901 1069 10 Pass 0.1467 8491 934 10 Pass 0.1532 7112 794 11 Pass 0.1597 6134 701 11 Pass 0.1662 5146 604 11 Pass 0.1727 4522 535 11 Pass 0.1792 3861 448 11 Pass 0.1857 3313 403 12 Pass 0.1922 2838 361 12 Pass 0.1987 2494 323 12 Pass 0.2052 2194 283 12 Pass 0.2117 1943 263 13 Pass 0.2182 1684 230 13 Pass 0.2247 1516 206 13 Pass 0.2312 1339 184 13 Pass 0.2377 1207 172 14 Pass 0.2442 1055 161 15 Pass 0.2507 988 148 14 Pass 0.2572 913 133 14 Pass 0.2637 859 121 14 Pass 0.2701 795 114 14 Pass 0.2766 753 104 13 Pass 0.2831 706 90 12 Pass 0.2896 659 82 12 Pass 0.2961 621 79 12 Pass 0.3026 589 76 12 Pass 0.3091 568 71 12 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 10 0.3156 552 68 12 Pass 0.3221 535 65 12 Pass 0.3286 518 61 11 Pass 0.3351 478 56 11 Pass 0.3416 454 49 10 Pass 0.3481 433 44 10 Pass 0.3546 409 42 10 Pass 0.3611 388 41 10 Pass 0.3676 374 37 9 Pass 0.3741 357 36 10 Pass 0.3806 346 33 9 Pass 0.3871 332 28 8 Pass 0.3936 325 25 7 Pass 0.4000 316 24 7 Pass 0.4065 308 22 7 Pass 0.4130 300 17 5 Pass 0.4195 292 17 5 Pass 0.4260 279 14 5 Pass 0.4325 274 13 4 Pass 0.4390 259 11 4 Pass 0.4455 248 10 4 Pass 0.4520 238 9 3 Pass 0.4585 230 9 3 Pass 0.4650 217 9 4 Pass 0.4715 209 8 3 Pass 0.4780 201 8 3 Pass 0.4845 181 8 4 Pass 0.4910 173 8 4 Pass 0.4975 166 7 4 Pass 0.5040 160 7 4 Pass 0.5105 151 7 4 Pass 0.5170 146 7 4 Pass 0.5235 135 6 4 Pass 0.5299 131 5 3 Pass 0.5364 121 5 4 Pass 0.5429 112 5 4 Pass 0.5494 94 5 5 Pass 0.5559 83 5 6 Pass 0.5624 69 5 7 Pass 0.5689 58 5 8 Pass 0.5754 50 5 10 Pass 0.5819 44 5 11 Pass 0.5884 39 5 12 Pass 0.5949 37 5 13 Pass 0.6014 34 5 14 Pass 0.6079 29 4 13 Pass 0.6144 25 4 16 Pass 0.6209 19 4 21 Pass 0.6274 16 4 25 Pass 0.6339 15 4 26 Pass 0.6404 11 4 36 Pass 0.6469 7 4 57 Pass 0.6534 5 4 80 Pass 0.6598 4 4 100 Pass 0.6663 4 4 100 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 July 30, 2019 Drainage Report Appendix A, Page 11 0.6728 4 4 100 Pass 0.6793 4 4 100 Pass 0.6858 4 3 75 Pass 0.6923 4 3 75 Pass 0.6988 3 3 100 Pass 0.7053 3 3 100 Pass 0.7118 3 3 100 Pass 0.7183 3 3 100 Pass 0.7248 3 3 100 Pass 0.7313 3 3 100 Pass 0.7378 3 3 100 Pass 0.7443 3 3 100 Pass 0.7508 3 2 66 Pass 0.7573 2 2 100 Pass 0.7638 2 2 100 Pass Water Quality BMP Flow and Volume for POC #1 On-line facility volume: 0 acre-feet On-line facility target flow: 0 cfs. Adjusted for 15 min: 0 cfs. Off-line facility target flow: 0 cfs. Adjusted for 15 min: 0 cfs. LID Report LID Technique Used for Total Volume Volume Infiltration Cumulative Percent Water Quality Percent Comment Treatment? Needs Through Volume Volume Volume Water Quality Treatment Facility (ac-ft.) Infiltration Infiltrated Treated (ac-ft) (ac-ft) Credit Gravel Trench Bed 1 POC N 859.02 N 100.00 Total Volume Infiltrated 859.02 0.00 0.00 100.00 0.00 0% No Treat. Credit Compliance with LID Standard 8 Duration Analysis Result = Passed Perlnd and Implnd Changes No changes have been made. This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com CONTRUCTION PLAN REVIEW & INSPECTION FEE WORKSHEET Community & Economic Development Department 18204 59th Avenue NE City of Arlington ï¬ ï¬ Arlington WA 98223 ï¬ (360) 403-3551 This form is to be completed and submitted with Type I , Type II Type III Construction Permit Application. 1) Based on permit type requested (Type I, Type II or Type III), complete the form as follows: ï¬ Type I permits complete all sections. ï¬ Type II permits complete as follows: - Grading Only - Complete Temporary Erosion and Sediment Control (TESC). - Stormwater Drainage Only - Complete the Temporary Erosion and Sediment Control and Stormwater Drainage Section for Public or Private ï¬ Type III permits complete the Temporary Erosion and Sediment Control (TESC). 2) The developer shall enter the quantities shown on the construction drawings into the Construction Calculation Worksheet. This document is used to determine the amount of plan reivew and inspection fees due to the city. 3) Excel will auto-calculate the relevant fields and subtotals throughout the document. Only the 'Quantity' columns should be completed. 4) The summary page calculates the fees due at intake for Civil and Stormwater Drainage construction permits only. This does not include fees for Grading or those required by other departments or agencies. Grading fees are based on Cubic Yard Quantity and shall be calculated at time of permit submittal. Grading fees shall be paid at permit submittal. 5) If an item that is part of your project does not exist in the spreadsheet complete the Write-In-Items section with the item, quantity and associated unit cost. There are a few unit prices that are blank, please complete them accordingly. 6) Inspection fees shall be calculated for Private Development during the review process and shall be paid upon permit issuance. PROJECT COSTS PUBLIC TOTAL PRIVATE TOTAL TOTAL PROJECT COST $ 126,655.63 $ 1,981,606.25 $ 2,108,261.88 OK PLAN REVIEW & INSPECTION FEES PLAN REVIEW & INSPECTION FEE (6% of Project Value) $ - GRADING FEE (4) (Cubic Yard ) $ - Review fees due at time of submittal Total Review Fees Due $ - An Assurance Device such as a Performance Bond or Assignment of Funds needs to be on file with the City of Arlington prior to permit issuance. The Assurance Device shall be 150% of the Construction Calculation Worksheet which are as follows: ï¬ Road and Alley (Public) ï¬ Stormwater Drainage and Grading (Public) ï¬ Utilities (Public) ï¬ Temporary Erosion and Sediment Control (Public and Private) ASSURANCE DEVICE Base Calculation of Performance Device $ 126,655.63 PERFORMANCE DEVICE 150% Amount Due $ 189,983.44 Base Calculation of Maintenance Device $ 64,079.38 MAINTENANCE DEVICE 20% Amount Due $ 12,815.88 1 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET TEMPORARY EROSION & SEDIMENT CONTROL Include Public Improvements & Private Development Description Unit Price Unit Quantity Cost Reference # Backfill & compaction-embankment $ 6.50 CY $ - Check dams $ 78.00 EACH 4 $ 312.00 BMP C207 Catch Basin Protection $ 35.50 EACH 15 $ 532.50 Crushed surfacing 1 1/4" minus $ 18.00 TON $ - WSDOT 9-03.9(3) Ditching $ 8.00 CY $ - Excavation-bulk $ 3.00 CY $ - Fence, silt $ 2.00 LF 2090 $ 4,180.00 BMP C233 Fence, Temporary (NGPA) $ 2.00 LF $ - Geotextile Fabric $ 2.50 SY $ - Hay Bale Silt Trap $ 0.50 EACH $ - Hydroseeding $ 4,200.00 ACRE $ - BMP C120 Interceptor Swale / Dike $ 1.00 LF 400 $ 400.00 Jute Mesh $ 2.00 SY $ - BMP C122 Level Spreader $ 1.75 LF $ - Mulch, by hand, straw, 3" deep $ 3.00 SY $ - BMP C121 Mulch, by machine, straw, 2" deep $ 1.00 SY $ - BMP C121 Piping, temporary, CPP, 6" $ 12.50 LF 105 $ 1,312.50 Piping, temporary, CPP, 8" $ 19.00 LF $ - Piping, temporary, CPP, 12" $ 24.00 LF 30 $ 720.00 Plastic covering, 6mm thick, sandbagged $ 3.00 SY $ 10,000.00 BMP C123 Rip Rap, machine placed; slopes $ 50.00 CY $ - WSDOT 9-13.1(2) Rock Construction Entrance, 50'x15'x1' $ 1,800.00 EACH $ - BMP C105 Rock Construction Entrance, 100'x15'x1' $ 3,600.00 EACH 1 $ 3,600.00 BMP C105 Sediment pond riser assembly $ 3,050.00 EACH 1 $ 3,050.00 BMP C241 Sediment trap, 5' high berm $ 21.00 LF 422 $ 8,862.00 BMP C240 Sed. trap, 5' high, riprapped spillway berm section $ 79.00 LF 108 $ 8,532.00 BMP C240 Seeding, by hand $ 1.00 SY $ - BMP C120 Sodding, 1" deep, level ground $ 8.00 SY $ - BMP C120 Sodding, 1" deep, sloped ground $ 9.50 SY $ - BMP C120 TESC Supervisor $ 84.00 HR 40 $ 3,360.00 Water truck, dust control $ 130.00 HR 40 $ 5,200.00 BMP C140 WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - SUBTOTAL (TESC Only): $ 50,061.00 MOBILIZATION 10%: $ 5,006.10 CONTINGENCY 15%: $ 7,509.15 TOTAL: $ 62,576.25 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET GENERAL ITEMS Public Improvements Description Unit Price Unit Quantity Cost Backfill & Compaction- embankment $ 8.00 CY $ - Backfill & Compaction- trench $ 11.00 CY 14 $ 154.00 Clear/Remove Brush, by hand (acre) $ 2,363.00 ACRE $ - Bollards - fixed $ 325.00 EACH $ - Bollards - removable $ 600.00 EACH $ - Clearing/Grubbing/Tree Removal $ 6,000.00 ACRE $ - Excavation - bulk $ 2.50 CY $ - Excavation - Trench $ 5.00 CY 27 $ 135.00 Fencing, cedar, 6' high $ 25.00 LF $ - Fencing, chain link, 4' $ 19.50 LF $ - Fencing, chain link, vinyl coated, 6' high $ 18.00 LF $ - Fencing, chain link, gate, vinyl coated, 20' $ 1,563.00 EACH $ - Fencing, split rail, 3' high $ 14.00 LF $ - Fill & compact - common barrow $ 27.00 CY $ - Fill & compact - gravel base $ 30.00 CY $ - Fill & compact - screened topsoil $ 45.00 CY $ - Gabion, 12" deep, stone filled mesh $ 62.00 SY $ - Gabion, 18" deep, stone filled mesh $ 86.00 SY $ - Gabion, 36" deep, stone filled mesh $ 152.00 SY $ - Grading, fine, by hand $ 2.00 SY 500 $ 1,000.00 Grading, fine, with grader $ 1.25 SY 1000 $ 1,250.00 Guard Post $ 90.00 EACH $ - Monuments $ 104.00 EACH $ - Sensitive Areas Sign $ 20.00 EACH $ - Sodding, 1" deep, sloped ground $ 10.00 SY $ - Topsoil Type A (imported) $ 30.00 CY $ - Traffic control crew ( 2 flaggers ) $ 98.00 HR $ - Trail, 4" chipped wood $ 9.00 SY $ - Trail, 4" crushed cinder $ 10.00 SY $ - Trail, 4" top course $ 9.50 SY $ - Wall, retaining, concrete $ 66.00 SF $ - Wall, rockery $ 13.00 SF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 2,539.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET IMPROVEMENT Public Improvements Description Unit Price Unit Quantity Cost AC Grinding, 4' wide machine < 1000sy $ 35.00 SY $ - AC Grinding, 4' wide machine 1000-2000sy $ 8.50 SY $ - AC Grinding, 4' wide machine > 2000sy $ 2.50 SY $ - AC Removal/Disposal/Repair $ 60.00 SY $ - Barricade, Type I $ 36.00 LF $ - Barricade Type II $ 25.00 LF $ - Barricade, Type III ( Permanent ) $ 55.00 LF $ - Conduit, 2" $ 5.00 LF $ - Curb & Gutter, rolled $ 20.00 LF $ - Curb & Gutter, vertical $ 15.00 LF 667 $ 10,005.00 Curb and Gutter, demolition and disposal $ 20.00 LF 110 $ 2,200.00 Curb, extruded asphalt $ 5.00 LF $ - Curb, extruded concrete $ 4.50 LF $ - Guard Rail $ 30.00 LF $ - Sawcut, asphalt, 3" depth $ 3.50 LF 667 $ 2,334.50 Sawcut, concrete, per 1" depth $ 3.00 LF $ - Sealant, asphalt $ 2.00 LF $ - Shoulder, gravel, 4" thick $ 11.00 SY $ - Sidewalk, 4" thick $ 40.00 SY $ - Sidewalk, 4" thick, demolition and disposal $ 36.00 SY $ - Sidewalk, 6" thick $ 45.00 SY 593 $ 26,685.00 Sidewalk, 6" thick, demolition and disposal $ 45.00 SY $ - Signs $ - LS $ - Sign, Handicap $ 100.00 EACH $ - Striping, per stall $ 7.50 EACH $ - Street Light System $ - LS $ - Traffic Signal $ - LS $ - Traffic Signal Modification $ - LS $ - Striping, thermoplastic, ( for crosswalk ) $ 3.50 SF $ - Striping, 4" reflectorized line $ 0.40 LF $ - AC Patching/Trenching Restoration $ 100.00 TON $ - Controlled Density Fill (CDF) $ 90.00 CY $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 41,224.50 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET SURFACING/PAVEMENT Public Improvements Description Unit Price Unit Quantity Cost Asphalt Overlay, 1.5" AC $ 12.00 SY $ - Asphalt Overlay, 2" AC $ 15.00 SY $ - Asphalt Road 2", First 2500 SY $ 10.00 SY $ - Asphalt Road 2", Qty. over 2500SY $ 9.00 SY $ - Asphalt Road 3", First 2500 SY $ 15.00 SY $ - Asphalt Road 3", Qty. over 2500 SY $ 13.00 SY $ - Asphalt Road 5", First 2500 SY $ 22.00 SY $ - Asphalt Road 5", Qty. Over 2500 SY $ 22.00 SY $ - Asphalt Road 6", First 2500 SY $ 25.00 SY $ - Asphalt Road 6", Qty. Over 2500 SY $ 24.00 SY $ - Asphalt Treated Base, 4" thick $ 14.00 SY $ - Gravel Base Course 2" $ 7.50 SY $ - Gravel Base Course 4" $ 15.00 SY $ - Gravel Base Course 6" $ 22.50 SY $ - Gravel Road, 4" rock, First 2500 SY $ 15.00 SY $ - Gravel Road, 4" rock, Qty. over 2500 SY $ 11.00 SY $ - Concrete Road, 5", no base, over 2500 SY $ 22.00 SY $ - Concrete Road, 6", no base, over 2500 SY $ 32.00 SY $ - Thickened Edge $ 11.00 LF $ - WRITE-IN-ITEMS Gravel Base Course 9" $ 33.75 SY $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET WATER SYSTEM Public Improvements Description Unit Price Unit Quantity Cost Blowoff $ 1,800.00 EACH $ - Connection to Existing Water Main $ 2,000.00 EACH 1 $ 2,000.00 Ductile Iron Watermain, CL 52, 6 Inch Dia $ 65.00 LF $ - Ductile Iron Watermain, CL 52, 8 Inch Dia $ 85.00 LF $ - Ductile Iron Watermain, CL 52, 10 Inch Dia $ 103.00 LF $ - Ductile Iron Watermain, CL 52, 12 Inch Dia. $ 125.00 LF $ - Gate Valve, 6 inch Dia $ 250.00 EACH $ - Gate Valve, 8 Inch Dia $ 380.00 EACH $ - Gate Valve, 10 Inch Dia $ 425.00 EACH $ - Gate Valve, 12 Inch Dia $ 500.00 EACH $ - Fire Hydrant Assembly, with Guard Posts $ 3,000.00 EACH $ - Fire Hydrant Assembly, without Guard Posts $ 2,500.00 EACH 1 $ 2,500.00 Air-Vac, 8 Inch Dia $ 6,000.00 EACH $ - Air-Vac,10 Inch Dia $ 7,500.00 EACH $ - Air-Vac, 12 Inch Dia $ 12,000.00 EACH $ - Pressure Reducing Valve Assembly, 8 In. Dia $ 3,800.00 EACH $ - Pressure Reducing Valve Assembly, 10 In. Dia $ 4,200.00 EACH $ - Pressure Reducing Valve Assembly, 12 In. Dia $ 5,000.00 EACH $ - Valve Marker Post $ 350.00 EACH $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - Subtotal $ 4,500.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET SANITARY SEWER Public Improvements Description Unit Price Unit Quantity Cost Connection to Existing Sewer Main $ - EACH $ - Clean Outs $ 500.00 EACH $ - Grease Interceptor, 500 gallon $ 6,000.00 EACH $ - Grease Interceptor, 1000 gallon $ 10,000.00 EACH $ - Grease Interceptor, 1500 gallon $ 15,000.00 EACH $ - Side Sewer Pipe, PVC. 4 Inch Dia $ 8.00 LF $ - Side Sewer Pipe, PVC. 6 Inch Dia $ 12.00 LF $ - Sewer Pipe, PVC, 8 inch Dia $ 33.00 LF $ - Sewer Pipe, PVC, 12 Inch Dia $ 41.00 LF $ - Sewer Pipe, PVC, _10_ Inch Dia $ 38.00 LF $ - Lift Station (Entire System) $ - LS $ - Manhole, 48 Inch Dia $ 3,000.00 EACH 1 $ 3,000.00 for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 54 Inch Dia $ 3,500.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 60 Inch Dia $ 3,700.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 72 Inch Dia $ 4,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Manhole, 96 Inch Dia $ 5,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Outside Drop $ - LS $ - Inside Drop $ - LS $ - Pipe, C-900 $ 90.00 LF $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 3,000.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET LANDSCAPING & VEGETATION Include Public Improvements & Priva Description Unit Price Unit Quantity Cost Street Trees $ 500.00 EACH $ - Root Barrier EACH $ - Median Landscaping $ - LS $ - Right-of-Way Landscaping $ - LS $ - Wetland Landscaping $ - LS $ - Private Landscaping $ - LS $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ - (INCLUDES GENERAL, STREET, SURFACING, WATER, SEWER, PUBLIC LANDSCAPING) SUBTOTAL $ 51,263.50 MOBILIZATION 10%: $ 5,126.35 CONTINGENCY 15%: $ 7,689.53 GRANDTOTAL: $ 64,079.38 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STORMWATER DRAINAGE Public Private Public Improvements Private Development Description Unit Price Unit Quantity Cost Quantity Cost Access Road, Retention / Detention $ 26.00 SY $ - $ - * (CBs include frame and lid) Beehive $ 90.00 EACH $ - $ - CB Type I $ 1,650.00 EACH $ - $ - CB Type IL $ 1,850.00 EACH $ - 19 $ 35,150.00 CB Type II, 48" Dia $ 2,550.00 EACH $ - $ - for additional depth over 4' $ 650.00 FT $ - $ - CB Type II, 54" Dia $ 2,700.00 EACH $ - $ - for additional depth over 4' $ 600.00 FT $ - $ - CB Type II, 60" Dia $ 2,900.00 EACH $ - $ - for additional depth over 4' $ 750.00 FT $ - $ - CB Type II, 72" Dia $ 4,000.00 EACH $ - $ - for additional depth over 4' $ 900.00 FT $ - $ - Through-curb Inlet Framework (Add) $ 550.00 EACH $ - $ - Cleanout, PVC, 4" $ 200.00 EACH $ - $ - Cleanout, PVC, 6" $ 250.00 EACH $ - $ - Cleanout, PVC, 8" $ 300.00 EACH $ - $ - Culvert, Box __ ft x __ ft $ - LS $ - $ - Culvert, PVC, 4" $ 12.00 LF $ - 5996 $ 71,952.00 Culvert, PVC, 6" $ 17.00 LF $ - 12,059 $ 205,003.00 Culvert, PVC, 8" $ 19.00 LF $ - $ - Culvert, PVC, 10" $ 25.00 LF $ - $ - Culvert, PVC, 12" $ 30.00 LF $ - 453 $ 13,590.00 Culvert, CMP, 8" $ 23.00 LF $ - $ - Culvert, CMP, 12" $ 35.00 LF $ - $ - Culvert, CMP, 15" $ 42.00 LF $ - $ - Culvert, CMP, 18" $ 47.00 LF $ - $ - Culvert, CMP, 24" $ 69.00 LF $ - $ - Culvert, CMP, 30" $ 100.00 LF $ - $ - Culvert, CMP, 36" $ 150.00 LF $ - $ - Culvert, CMP, 48" $ 194.00 LF $ - $ - Culvert, CMP, 60" $ 310.00 LF $ - $ - Culvert, CMP, 72" $ 400.00 LF $ - $ - Culvert, Concrete, 8" $ 36.00 LF $ - $ - Culvert, Concrete, 12" $ 43.00 LF $ - $ - Culvert, Concrete, 15" $ 52.00 LF $ - $ - Culvert, Concrete, 18" $ 55.00 LF $ - $ - Culvert, Concrete, 24" $ 85.00 LF $ - $ - Culvert, Concrete, 30" $ 136.00 LF $ - $ - Culvert, Concrete, 36" $ 165.00 LF $ - $ - Culvert, Concrete, 42" $ 196.00 LF $ - $ - Culvert, Concrete, 48" $ 210.00 LF $ - $ - Culvert, CPP, 6" $ 16.00 LF $ - $ - Culvert, CPP, 8" $ 22.00 LF $ - $ - Culvert, CPP, 12" $ 28.00 LF $ - $ - Culvert, CPP, 15" $ 34.00 LF $ - $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Culvert, CPP, 18" $ 39.00 LF $ - $ - Culvert, CPP, 24" $ 49.00 LF $ - $ - Culvert, CPP, 30" $ 62.00 LF $ - $ - Culvert, CPP, 36" $ 69.00 LF $ - $ - Ditching $ 12.00 CY $ - $ - Flow Dispersal Trench (1,436 base+) $ 40.00 LF $ - $ - French Drain (3' depth) $ 39.00 LF $ - $ - Geotextile, laid in trench, polypropylene $ 5.00 SY $ - 4623 $ 23,115.00 Infiltration pond testing $ 125.00 HR $ - $ - Mid-tank Access Riser, 48" dia, 6' deep $ 2,025.00 EACH $ - $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - $ - Pipe, C900 $ 90.00 LF $ - $ - Pond Overflow Spillway $ 18.00 SY $ - $ - Restrictor/Oil Separator, 12" $ 1,500.00 EACH $ - $ - Restrictor/Oil Separator, 15" $ 1,550.00 EACH $ - $ - Restrictor/Oil Separator, 18" $ 1,680.00 EACH $ - $ - Riprap, placed $ 52.00 CY $ - $ - Tank End Reducer (36" Dia) $ 1,280.00 EACH $ - $ - Thru-Inlet at CB $ 150.00 EACH $ - $ - Trash Rack, 12" $ 320.00 EACH $ - $ - Trash Rack, 15" $ 325.00 EACH $ - $ - Trash Rack, 18" $ 350.00 EACH $ - $ - Trash Rack, 21" $ 375.00 EACH $ - $ - WRITE-IN-ITEMS 18" Concrete Yard Drain $ 250.00 LF $ - 21 $ 5,250.00 Culvert, PVC, 24" $ 60.00 LF $ - 260 $ 15,600.00 LF $ - $ - LF $ - $ - SUBTOTAL: $ - $ 369,660.00 MOBILIZATION 10%: $ - CONTINGENCY 15%: $ - TOTAL: $ - $ 369,660.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Rev 7/2017 Geotextile syardage R/F pipe co 270 3 90 20 1800 3 60 300 180 3 60 20 1200 3 60 147 150 3 50 20 1000 3 60 305 180 3 60 40 2400 3 120 309 165 3 55 30 1650 3 90 339 180 3 60 20 1200 3 60 316 330 3 110 30 3300 3 90 305 60 3 20 20 400 3 60 306 180 3 60 30 1800 3 90 483 525 3 175 20 3500 3 60 384 240 3 80 40 3200 3 120 384 120 3 40 20 800 3 60 385 630 3 210 20 4200 3 60 345 150 3 50 30 1500 3 90 340 420 3 140 20 2800 3 60 339 210 3 70 30 2100 3 90 120 3 40 30 1200 3 90 270 3 90 20 1800 3 60 4380 35850 1380 4987 3983.333 6520 sf 41610 535 sy 4623.333 606 infil trench pipe count 343 pipe count pipe lengthpipe count pipe width total pipe length 12059 101 2 80 2 10 180 102 2 50 4 10 140 102.1 2 40 12 10 200 103 4 50 2 30 260 104 3 45 2 20 175 105 2 50 2 10 120 106 3 100 2 20 340 106.1 2 10 20 106.2 3 50 2 20 190 107 2 165 2 30 390 108 4 70 2 30 340 108.1 2 30 2 20 100 109 2 200 2 10 420 110 2 40 2 20 120 111 3 130 2 10 410 112 2 60 2 20 160 112.1 3 30 2 30 150 113 4 80 2 10 340 4055 perf 6" ount wall 4" pvc 1009 4" perf pipe 5996 4" perf pvc 6" pipe for roof 6" pipe from roof to cb 6"pipe between trenches 6" pipe between cbs 1 2 3 4 5 FENCE AF#9707175004 138 D TR. B TR. C TR. D 142 140 139 TR. L WETLAND TRAIL SIGN PATHWAY 6' PERIMETER FENCE 141 W 24" PVC W/TRASH RACK S IE=133.79 PLANTING LEGEND SPLIT RAIL FENCE 146 148 150 152 154 156 Header 144 SSMH WV 138 138 134 136 136 S. SIDE OF DITCH Trees S < SS < SS < SS < SS 140 Landscape Statistics CL SWALE Symbol | Num | Species Common Name 140 DP 3-U 35 No. Acer circinatum Vine Maple W WA WA136 WA WA WA WA SILT FENCE* INTERIOR SHADE 1-1/2" caliper to be provided 142 MINI-PARK B; TREES provided between per code. S River birch E.2 SEE SHEET PL-2 148 5 No. Acer palmatum 'Bloodgood' Japanese Maple 'Bloodgood' buildings FFE:142.5 SS PARKING LOT PAVEMENT STRIPED AS SHARO FOR LANDSCAPE W PEDESTRIANS 12 No. Acer rubrum 'Karpick' Karpick Red Maple 225 SF OF Area of Parking 79,920 SF BLDG SHADE 142 4'-0" TYP. D 142 Shade Required 15,984 SF FFE:142.5 FOR PARKING BLDG (.20 x SF) 136 142 158 E * SILT FENCE BLDG 12 No. Acer rubrum 'October Glory' CONSULTANT: FFE:142.5 K Shade Provided 17,230 SF W FFE:157.0 PRKG MAX:148.0 SS 138 DP 4-U 9 No. Betula nigra River birch eccosDesign 2" caliper approved tree provided Landscape Architecture 100 SF OF DP 6-U STREET FRONTAGE every 30' o.c. required per code. 142 POOL SHADE 146 and Planning 142 9 No. Fraxinus americana 'Junginger' Autumn Purple Ash 146 142 Mount Vernon, WA 99273 W WA > 140 142 DP 5-U 3 No. Liquidambar styraciflua 'Slender Slihouette Sweetgum p. 360.419.7400 HYD J eccosDesign SEC SS * < SS WA SS WA WA WASS WA WA WA WA WA< WA Silhouette' f. 800.508.2017 140 142 138 WA WA SS WA SEC 170 SF OF Autumn Purple Ash < DP 7-U MINI PARK C WA WA < 4 No. Magnolia kobus SHADE 142 142 (SHEET PL-2) WA WA SS SS W < SS < SS < SS < SS < SS < SS Flowering Pear 'Chanticleer' SWITCH WA 142 STAMP: WA < < < 5 No. Nyssa sylvatica Sour gum WA WA SS100 SF OF SS SHADE SS WA L A W N W WA SS 142 < 13 No. Parrotia persica 'Vanessa' Vanessa Parrotia W < 200 SF OF 144 WA < BLDG J C SHADE SS L A W N L C CB 142 WA WA FFE:154.0 SS Flowering Cherry WA WA WA PRKG MAX:145.0 18 No. Prunus 'Amanogawa' Flowering Cherry WA WA < WA WA SS WA WA 138 BLDG WA144 BLDG SS H 144 C < SS < SS F YD < FFE:142.5138 MINI-PARK C; 32 No. Pyrus calleryana 'Chanticleer' Flowering Pear 'Chanticleer' FFE:142.5 WA BIKE RACK W SEE SHEET PL-2 N.E. SS < BERM WA MINI PARK D- 158 11 No. Zelkova serrata 'Greenvase' Green Vase Zelkova SS SEE SHEET PL-2 ASTM_07 < 6'-7" < WA [2.00M] 6'-3" SS GLIDE8[1.91M] GLIDE SLIDE SLIDE 6'-2"TRANSFERTRANSFER 156 FL VERT. CURB [1.88M]STATIONSTATION7 SS W/ STEP6W/ STEP SS SLIDING10 SLIDINGPOLE 144 12 POLE L A W N 152 154 DRIVER 13 H 6'-2" 124" HEX D PANEL (deck) 184" Y [1.89M] ADA BELL CAMBER 16 18 ROOF TWISTED 136" PANEL (ground) 184" CLIMBERTWISTED 160 136" 36" 184" CLIMBER < 124" 72" 6'-3" < SPIRAL 0,92M 1,83M [1.91M] SPIRAL LADDER17 < LADDER 136" 184" W W/ ACCESS LADDERW/ ACCESS136" 184" 19 LADDER 124" ADA ADA 184" STAIRS20 6'-2" LEG STAIRS POST 146 [1.87M] LIFT 11 15 MOUNT 148 WA WHEEL TOWER14TOWER Conifer CLIMBER CLIMBER 3-WV GLIDE9 SS WA SLIDEGLIDE 8 SLIDE6'-5" PROJECT IDENTIFICATION: [1.96M] GLIDE SLIDE6'-2" WA GLIDE 150 WA SS WA WA Vanessa Parrotia ASTM_07 SLIDE[1.89M] Symbol | Num | Species Common Name H WA WA WA ASTM_07 SS WA Y D WA WA WA J 6 No. Chamaecyparis nootkatensis 'Green Weeping Alaska Cedar SS 142 CL SWALE AVE. WA WA WA 144 N.E. Arrow' < < WA BLDG Centennial Park SEC H WA W S SS 142 FFE:143.25 144 BLDG 13 No. Pseudotsuga menziesii Douglas fir WA 6'-6" J SS Mixed Use WA TYP. FOR CARPORT FFE:146.0 < < WA BLDG M FFE:156.25 SS SS WA PRKG MAX:147.25 146SS FOR W BLDG 67TH B WA < 138 W FFE:142.5 BLDG < Williams Investments, < SS < SS 140 W WA G < FFE:142.75 I 3-WV FFE:145.0 BLDG SS WA S DP 2-U I WA SS WA SS H H OPEN TRELLIS AND FENCE Y WA WA D < WA Y L A W N D TO DEFINE PRIVATE / SS SEC WA WA WA < 144 144 WA SS WA WA PUBLIC SPACE 142 WA WA SS AVE. AT WA WA SEC J SS WA < WA SS 138 142 WA< 2517 Colby Ave H YD < WA WA WA 158 < 144 WA SSMH-956 Everett, WA 98201 ASPHALT PATH WAWA WAWA WAWA WA MINI-PARK A; 146 115 SF OF SS 138 SS SEE SHEET PL-2 156 S W SS 138 140 142 SHADE S CENTENNIAL TRAIL B SS WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA 154 B SS WAWA BUILDING PLANTING < 152 < PLAN - SEE THIS SHEET J 148 WA This drawing is: < SS < SS < SS < SS < SS < SS < SS < SS < SS < SS < SS < SS < SS < SS WA 1. Copyright 2018 Dykeman, Inc. < J WAWA 142 146 < 2. The Architect's Instrument of Professional Service. 138 SS < SEC WA 3. For use on this project only. Obtain Architect's WA SS written permission for any other use or reproduction. J Slihouette Sweetgum 150' BUFFER STAIRS SS SS SEC 150 SS ISSUED: 4'-0" TYP. 160 FOR PARKING 150' BUFFER W BLDG MARK DATE DESCRIPTION BLDG A B OUTDOOR LIVING AREA FFE:142.5 BLDG - N 67TH 138 FFE:142.5 SEE WETLAND REPORT FOR ANY N MITIGATION REQUIREMENTS IN BUFFER FFE:150.0 < AREA SS < SSMH-955 RIM=161.33 AT GRADE PANTER IE=153.48 S SS 158 PATIO AREA PROJECT NUMBER: 1901ed SS SS S 140 158 SS DITCH SS PROJECT MANAGER: Patrik Dylan SWITCH < SS 148 CHECKED BY: SS 144 146 SS 32.17 SS 158 SS CB-964 142EMPHASIS ON NATIVE PLANTS RIM=138.18 48" CMP SS WITH APPROPRIATE SCALE DRAWING TITLE: N IE=137.09 12" S IE=135.96 SS 142 156 SS SUCH AS VINE MAPLE, 142 140 S SS SS SWORD FERN, DWARF SS SS SS S SS SS < UB R SS R SS WA WA RED-TWIG, ETC... R UB R SS S UR 154 EDGE OF ASPHALT STREET AND INTERIOR TREE 144 R ASPHALT PATH WA WA 12" PVC NW IE=132.05A CB-965 FL VERT. CURB R 138 PLAN A 12" PVC E IE=132.15 RIM=140.50 142 23 12" S IE=137.60 S. LINE, S.W. 1/4, S.W. 1/4, SEC. 23-31-5 FOG LINE 138 140 SS 26 SS WAWA CB-966 SEC. COR. 23-31-5 RIM=140.21 SSMH-958 172ND ST. N.E. 152 FND CONC. MON IN 12" N IE=136.71 RIM=143.52 FOG LINE BUILDING PLANTING PLAN - typical CASE W/2" CONC. 12" W IE=136.86 12" PVC E IE=133.73 APPROX. LOCATION OF 150 FILED PIPE 10-31-16 12" PVC W IE=133.63 148 146 SEWER MANHOLE PER PP 1" = 20'-0" (CHECK SCALE BAR FOR ACCURACY) DRAWING NUMBER: PP RECORDED INFORMATION STREET AND INTERIOR TREE LANDSCAPE PLAN 1" = 40'-0" (CHECK SCALE BAR FOR ACCURACY) one inch July 8, 2019 L 1.1 (base v.4ed3) NORTH 0' 40' 80' 120' 160' 1" = 40'-0" 1 2 3 4 5 1 2 3 4 5 D H Y D 136 136 6' PERIMETER FENCE CL SWALE DP 3-U SPLIT RAIL FENCE TO OPEN LAWN PLAY AREA SILT FENCE PROTECT WETLAND WITH MINOR BERMING * 142 ASTM_07 6'-7" [2.00M] 6'-3" GLIDE8[1.91M] GLIDE SLIDE SLIDE 6'-2"TRANSFERTRANSFER [1.88M]STATION STATION 7 W/ STEP6W/ STEPSTATIONTRANSFER STATIONTRANSFER PLAY STRUCTURE SLIDING10 SLIDINGPOLE 144 12 POLE 5' WIDE FIRM AND STABLE DRIVER 13 6'-2" 124" HEX PANEL (deck) 184" [1.89M] ADA BELL CAMBER 16 Driver Panel(deck level)Bell Panel 18 ROOF TWISTED 136" ADA AccessiblePANEL (ground) 184" CLIMBERTWISTED GRAVEL PATH 136" 36" 184" CLIMBER 124" 72" 6'-3" CONSULTANT: SPIRAL 0,92M 1,83M [1.91M] SPIRAL LADDER 17 LADDER 136" 184" W/ ACCESS LADDERW/ ACCESS136" 184" 19 LADDER 124" ADA ADA 184" STAIRS20 6'-2" LEG STAIRS POST [1.87M] LIFT 11 15 MOUNT WHEEL TOWER14TOWER CLIMBER CLIMBER GLIDE9 BENCH SEATING SLIDEGLIDE 8 eccosDesign SLIDE6'-5" [1.96M] GLIDE SLIDE6'-2" GLIDE ASTM_07 SLIDE[1.89M] ACCENT LANDSCAPE WITH Landscape Architecture ASTM_07 NATIVE PLANT EMPHASIS and Planning LANDSCAPE SURROUNDS 142 Mount Vernon, WA 99273 CL SWALE CENTER SPACE p. 360.419.7400 eccosDesign 136 INTERPRETIVE SIGN ON f. 800.508.2017 E FENCE H ACCENT PAVING * FFE:142.5 FFE:143.25 144 STAMP: J TABLES AND CHAIRS OUTDOOR POOL AREA WITH FFE:146.0 FURNISHINGS PICNIC PAVILION AND C TRELLIS ELEMENT CLUBHOUSE / COMMUNITY C BUILDING PARK WALKWAYS POOL FENCING PER CODE PRIVATE WALKWAYS 142 WETLAND TRAIL SIGN I SS * FFE:145.0 WA WA PROJECT IDENTIFICATION: WA < Centennial Park Mixed Use MINI PARK A - NEIGHBORHOOD GREEN MINI PARK B - COMMUNITY POOL 1" = 20'-0" (CHECK SCALE BAR FOR ACCURACY) 1" = 20'-0" (CHECK SCALE BAR FOR ACCURACY) FOR Williams Investments, AT 2517 Colby Ave WA Everett, WA 98201 B B 146 This drawing is: PATIO AREA WITH ACCENT 1. Copyright 2018 Dykeman, Inc. 140 WA SCORING 2. The Architect's Instrument of Professional Service. DP 5-U WA 3. For use on this project only. Obtain Architect's WA Vanessa Parrotia written permission for any other use or reproduction. STRING LIGHTS ON 'HOPS' < WA POSTS WA J ISSUED: WA WA SEC WA DP 7-U WA STONE COUNTER FOR PORTABLE MARK DATE DESCRIPTION WA BBQ SETUP SS WA SEC 142 ACCENT LANDSCAPE < WA WA WA SS W PROJECT NUMBER: 1901ed WA < PROJECT MANAGER: Patrik Dylan 144 J WA CHECKED BY: WA WA WA WA MINI PARK D - PATIO AREA WA WA SS WA WA WA 1" = 20'-0" (CHECK SCALE BAR FOR ACCURACY) DRAWING TITLE: WA144 BENCH INTERPRETIVE SIGN ALL WEATHER SHELTER PARK ENLARGEMENT PLANS OVERLOOKING WETLAND FOR DOG OWNERS A A ACCENT LANDSCAPE OPEN LAWN AREA LARGE BOULDER IN PLAY CHIPS SPLIT RAIL FENCE CONCRETE WALKWAY 4' SECURITY FENCE ON LOW RETAINING WALL DRAWING NUMBER: MINI PARK C - DOGPARK AND SEATING AREA 1" = 20'-0" (CHECK SCALE BAR FOR ACCURACY) one inch July 8, 2019 L 1.2 0' 20' 40' 60' 80' (base v.4ed3) NORTH 1" = 20'-0" 1 2 3 4 5 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 1. NEH The grade of the driveways off 67th are about 8%. Please evaluate the transition from the ADA walkway to the 8% and then back to the flat driveway areas to ensure there will not be issues with cars bottoming out. Consider designing vertical curves to smooth transition. 2. NEH Distance between CB G2 and 12 is long and fairly flat, consider adding CB to ensure drainage. 3. NEH There isn't a 20' offset from the infiltration trenches to buildings. 4. NEH C3.1 Notes on infiltration section, CSBC is listed as CBDS on 3rd note from top. 5. NEH C6.2 Texture concrete at driveway intersections with the trail, 4'x4' scoring at a 45 degree angle. To increase driver awareness. 6. NEH Lighting plan needed, path lighting 7. NEH Lighting for centennial trail required, see city standard. attached 8. NEH Street lighting for driveways is required. 9. NEH Drainage Task 4, Says further site visits will be done for the full Report Section 3 engineering submittal. Please update, as this is the full engineering submittal. 10. NEH Drainage WWHM The pre-developed basin is larger than the mitigated Report basin, these areas must be equal. 11. NEH Drainage Report needs to include a table, summarizing the Report required infiltration area and storage volume, and comparing it to the proposed design infiltration areas Page 1 of 5 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved and storage volumes. Demonstrating that the proposal meets or exceeds the requirements of the analysis. 12. NEH Drainage WWHM All information must be explained clearly in the body Report of the report, the WWHM output should be for my reference, all necessary information should be in the body of the report. 13. NEH Drainage Demonstrate and discuss that time of infiltration Report meets requirements (draw down time) 14. NEH Drainage By bypassing 0.74 acres you are not fully infiltrating Report the site, not meeting the requirements of LID design. 15. NEH Drainage Must detail a discussion of the mounding analysis in Report the report. 16. NEH Drainage Must discuss the drainage of the wall in the report. Report 17. NEH Drainage A clear basin map is required, showing, the bypass Report area and justification of how/why it can be bypassed. 18. NEH Drainage Show all pollution generating areas are going to Report treatment areas. 19. NEH Drainage It would appear the bypass areas are bypassing Report treatment. All pollution generating areas must be directed to treatment, including the impacted ROW areas. 20. NEH Drainage See drainage report requirements for tables, executive Report summary, etc. 21. NEH Drainage Provide conveyance sizing. Report Page 2 of 5 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 22. NEH Drainage Downstream area of this project has been problematic Report in the past, including stormwater related lawsuits. The report needs to clearly demonstrate that this development meets or exceeds all stormwater requirements. 23. NEH Public and Private landscaping costs need to be added to the Construction Cost Worksheet. 24. NEH On-site water and sewer mains and hydrants will be public. Update Construction Cost Worksheet accordingly. 25. NEH Show easements for public water and sewer. 26. NEH If speed bumps are to be proposed provide in civil plans. 27. NCF- Fire Fire department connections (FDCs) shall NOT be MM remote for this project. FDCs shall be a single inlet installed on the exterior wall of each fire sprinkler riser closet on each building. Sprinkler designer shall calculate size of FDC inlet needed and get approval from AFD after sprinkler permit applied for. 28. NCF- Fire Fire hydrant located on west side of bldg. G is blocked MM by parking stall. Parking stall to be changed to no parking area. No parking areas in front of hydrants, shall be in accordance with AMC 15.20.160. 29. NCF- Fire Fire hydrant located to northeast of bldg. H is blocked MM by parking stall. Parking stall to be changed to no parking area. No parking areas in front of hydrants, shall be in accordance with AMC 15.20.160. Page 3 of 5 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 30. NCF- Fire Fire lanes shall be marked in accordance with AMC MM 15.10.070 Section 503.3. 31. RM Per COA Standards W-220 and W-225 Fire Service lines shall be ductile iron and a minimum of 4â€ into buildings. 32. RM C4.11 Water Water crossings with sewer shall have minimum of 18â€ vertical clearance per COA Standards 4-1.06. Marks 1, 2, 4, 29, 35 and 38 do not meet this requirement. 33. RM C4.5 Water Extend 12â€ main along the north side of Building N to East property line for future extension. Install blowoff per COA Standard W-180 at property line. 34. RM C4.4 Water C4.4: Extend main west through southern driveway entrance and then north to connect to existing water main on the east side of 67th (approximate station 3+15). There is an existing stub extending east out of the roadway at the valve cluster for the hydrant that is on the west side of 67th. 35. FR Sewer attached 10.2.19 Sewer Redline 1 10.2.19 Sewer Redline 2 36. FR Sewer Alignment of side sewers to mainline should be perpendicular to main line sewer. 37. FR Sewer Alignment of Sewer main should be located in the lane of travel see redlines. 38. LP All sheets Change construction approval block to Development Services Block. attached Page 4 of 5 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved Page 5 of 5 City of Arlington Street Lighting Guide November 2018 Prepared in conjuction with: City of Arlington Street Lighting Guide November 2018 Introduction All public streets, sidewalks, and other common areas or facilities shall be sufficiently illuminated to ensure the security of property and the safety of persons using such streets, sidewalks, and other common areas or facilities. The City currently uses four types of street lights: 1. Standard street lights maintained by Snohomish County PUD 2. Street lights maintained by the City of Arlington 3. Pedestrian lights maintained by the City of Arlington 4. Street lights maintained by WSDOT All roads, driveways, sidewalk, parking lots, entrances, exits and other common areas and facilities in commercial/industrial and multifamily developments shall be sufficiently illuminated to ensure the security of property and the safety of persons using such areas and facilities. Street lighting systems shall conform to AMC 20.60.400 and the Engineering Standards, Chapter 2-8, and PUD Standards. All street lighting shall consist of LED fixtures unless approved by the City Engineer. Street light locations must be shown in site/civil plans and be energized with underground conduit to the maximum extent feasible. The City may require the Developer to add, reduce, or relocate street lights at Developerâ€™s expense. Maintenance of the completed lighting system in City Right of Way is provided by PUD and paid for by the City. Maintenance of private lighting systems shall be the responsibility of the property owner. Illumination shall be required on all new roadways. Widening of roadways will require maintaining the existing illumination or designing to current standards, if existing illumination cannot be maintained due to the ultimate roadway width. New roadway lighting shall meet the minimum illumination requirements as prescribed in Table 2-5, as measured in foot-candles (fc). The City Engineer may require a Photometric analysis be completed to demonstrate required illumination levels are met. Table 2-5 Minimum Roadway Illumination Roadway Area Classification Classification Commercial Industrial Residential Arterial 2.0 fc 2.0 fc 1.0 fc Collector 1.2 fc 0.9 fc 0.6 fc Residential/Local 0.9 fc 0.6 fc 0.6 fc 2 | P a g e City of Arlington Street Lighting Guide November 2018 The following roadway lighting luminaire fixtures and poles, or approved equals as determined by the City Engineer, are required on City corridors: 1. LeoTek GreenCobra LED Street Light a. Color Temperature: 3000K b. Approved Dark Sky Friendly Fixture 2. 1254 Industries Huntington Series tapered decorative pole The following pedestrian or trail lighting luminaire fixtures, and poles or approved equals as determined by the City Engineer, are required on designated City trails: 1. K199 California - LED Acorn a. Color Temperature: 3000K b. BUG Rating: B2U3G2 2. 1254 Industries Huntington Series tapered decorative pole 3 | P a g e K199 CALIFORNIA - LED ACORN The K199 California luminaire was one of the original acorn styles that graced the streets of North American PROJECT: towns and cities, particularly in Southern California. Teamed with King Luminaireâ€™s high performance LED engines it makes for a perfect solution for city streets, PREPARED BY: parks, schools and commercial areas. DATE: PRODUCT SPECIFICATIONS LED ENGINE quickly removed from the globe it will be necessary only to attach Light engine shall be an array of assembly. The globe assembly the incoming supply connectors 36, 42, 54 or 63 solid state Cree is secured to the main housing to Mate-N-Lok connectors or to a X-Series high power LEDs (light by means of a spring-tensioned, terminal block. Mate-N-Lok shall emitting diodes) mounted to a twist-locking Rotolockâ„¢ unit to al- be certified for 600V operation. multi-sided, vertical heat sink of low tool-less removal of the globe, Internal wire connectors shall be highly conductive aluminum. The while maintaining a secure seal be- crimp connector only and rated LED emitters are mounted to re- tween the globe assembly and the at 1000V and 150Â°C. All wiring to movable circuit boards such that main body of the luminaire, making be CSA certified and/or UL listed, they are in full thermal contact with the K199 California suitable for an type SFF-2, SEWF-2, or SEW-2 No. the vertical heat sink. The vertical outdoor environment. 14 gauge, 150Â°C, 600V, and color 39 1/8" heat sink is open at the bottom and coded for the required voltage. vented at the top to provide appro- High performance protection priate dynamic airflow cooling for against water or dust particle in- THERMALS the LED array. The emitters are ar- gress is available by means of a Fixtures tested by a DOE sanc- ranged in various patterns on each non-porous, closed-cell silicon rub- tioned test facility to determine the face of the vertical heat sink to pro- ber o-ring gasket which is highly maximum in-situ solder-point or vide the required light distribution. efficient in sealing against particle junction-point temperatures of the ingress over a wide temperature LED emitters. This report is avail- OPTICS range (-40Â°F to 310Â°F). able upon request. The LED arrays include optical baf- fles constructed of optical grade DRIVER FINISH CERTIFICATION: ABS plastic with a vacuum met- The LED universal dimmable driver Housing is finished with a 13 step CSA US Listed allized reflective surface or clear will be class 2 and capable of 120 KingCoatâ„¢ SuperDurable polyester Suitable for wet locations acrylic precision refractors over - 277V or 347 - 480V input volt- TGIC powder coat. Standard colors ISO 9001 each diode. Both optical options age, greater than 0.9 power fac- include strobe white, brown metal, IP66 are designed to efficiently control tor, less than 20% total harmonic marina blue, gate gray, Chicago ARRA Compliant light distribution in IESNA Type IV distortion and features an ambi- bronze, standard gold, standard LM79 / LM80 Compliant & V for the B3 and Type III & V for ent temperature range of -35Â°C up black, federal green and rain forest. the R1. to 65Â°C. Each LED system comes Please see our website for a com- DRIVER INFO: with a standard surge protec- plete list of colors. RAL and custom >0.9 Power Factor LUMINAIRE CONSTRUCTION tion designed to withstand up to color matches are available. <20% Total Harmonic Distortion All K199 California cast compo- 20kV/10kA of transient line surge as 120 - 277V & 347 - 480V nents shall consist of a heavy grade per IEEE C62.41.2 C High. An in-line MISCELLANEOUS -35Â°C Min. Case Temperature A319 cast aluminum. The main ferrite choke is utilized to provide All exterior hardware and fasten- 65Â°C Max. Case Temperature body, or capital, acts as an enclo- protection against EFTâ€™s. The driv- ers, wholly or partly exposed, shall Surge Protection: ANSI C136.2 extreme level 20kV/10kA sure for the driver assembly and is er assembly will be mounted on a be stainless steel alloy. All internal of adequate thickness to give suffi- heavy duty fabricated galvanized fasteners are stainless steel or zinc EPA: cient structural rigidity. The capital steel bracket to allow complete coated steel. All remaining internal 1.55 sq. ft. shall have an opening at the base tool-less maintenance. hardware is stainless steel, alumi- tenon body to allow the luminaire num alloy, or zinc coated steel. FIXTURE WEIGHT: to be mounted to a tenon of 3-1/2â€ PHOTOMETRICS 36 lb maximum diameter. The luminaire Fixtures are tested to IESNA LM79 WARRANTY shall be locked in place by means specifications. These reports are The K199 California LED luminaire of heavy duty, stainless steel set- available upon request. comes with a 7 year limited war- screws. ranty. CHROMATICITY GLOBE ASSEMBLY High output LEDs come standard The protective globe shall be mold- at 3000 & 4000K (+/- 300K) with ed of either; rippled polycarbonate a minimum nominal 70 CRI. Addi- Miles Makrolon GP/OP Thermo- tional CCT emitters are available plastic Polymer, or equivalent, or upon request. rippled acrylic Acrylite Plus Acrylic Polymer, or equivalent, having a LUMEN MAINTENANCE minimum thickness of 0.125â€. Reported (TM21) and Calculated (L70) reports are available upon The globe assembly is a self-con- request with a minimum calculated tained unit consisting of the globe, value of 100,000 hrs. rugged cast locking ring, and the LED light engine and optical con- WIRING trol. The LED light engine is of a All internal wiring and connec- modular design, and is able to be tions shall be completed so that LED Product Partner 7-12-2017 POWER & LUMENS K199 CALIFORNIA - LED ACORN Test Voltage: 120V Nominal Color Temperature: 3000K & 4000K1 B3 1036 Engine Series: 36 Emitters (40 - 75W) To learn more about the B3 Optic, please see the B3 Optic Information Sheet 1054 Engine Series: 54 Emitters (100W) LED ENGINE LED Engine + Driver Rated Life = 100,000 hrs2 Photometric Test Decorative Color IES Nominal Engine Delivered Efficacy mA @ Driver BUG HID Report Number Option Temperature Distribution Watts Series Lumens3 (LM/W)3 Emitter Output Current Rating Equivalent4 100NB3AR404030 Open 3000 Type IV 40 1036 2376 58.5 333 2000 1-3-2 50-70 100NB3AR404040 Open 4000 Type IV 40 1036 3116 76.2 333 2000 1-3-2 50-70 100NB3AR504030 Open 3000 Type V 40 1036 2324 57.2 333 2000 2-3-2 50-70 100NB3AR504040 Open 4000 Type V 40 1036 2897 70 333 2000 2-3-2 50-70 100SB3AR404030 SST 3000 Type IV 40 1036 2176 54.1 333 2000 1-3-2 50-70 100SB3AR404040 SST 4000 Type IV 40 1036 2890 71.4 333 2000 1-3-2 50-70 100SB3AR504030 SST 3000 Type V 40 1036 2328 56.9 333 2000 2-3-2 50-70 100SB3AR504040 SST 4000 Type V 40 1036 2816 70.2 333 2000 2-3-2 50-70 100WB3AR504030 SST/Struts 3000 Type V 40 1036 2218 54.8 333 2000 2-3-2 50-70 In Testing SST/Struts 4000 Type V 40 1036 N/A N/A 333 2000 N/A 50-70 In Testing SST/Struts 3000 Type IV 40 1036 N/A N/A 333 2000 N/A 50-70 100WB3AR404040 SST/Struts 4000 Type IV 40 1036 2637 65.3 333 2000 1-3-2 50-70 100NB3AR406030 Open 3000 Type IV 60 1036 3318 54.2 500 3000 1-3-3 70-100 100NB3AR406040 Open 4000 Type IV 60 1036 4378 71.2 500 3000 1-3-3 70-100 100NB3AR506030 Open 3000 Type V 60 1036 3286 53.4 500 3000 2-3-2 70-100 100NB3AR506040 Open 4000 Type V 60 1036 4078 65.1 500 3000 2-3-2 70-100 100SB3AR406030 SST 3000 Type IV 60 1036 3064 50.2 500 3000 1-3-3 70-100 100SB3AR406040 SST 4000 Type IV 60 1036 4093 66.8 500 3000 1-3-3 70-100 100SB3AR506030 SST 3000 Type V 60 1036 3278 53.3 500 3000 2-2-2 70-100 100SB3AR506040 SST 4000 Type V 60 1036 4022 65.5 500 3000 2-3-2 70-100 100WB3AR506030 SST/Struts 3000 Type V 60 1036 3121 51.2 500 3000 2-3-2 70-100 In Testing SST/Struts 4000 Type V 60 1036 N/A N/A 500 3000 N/A 70-100 In Testing SST/Struts 3000 Type IV 60 1036 N/A N/A 500 3000 N/A 70-100 100WB3AR604040 SST/Struts 4000 Type IV 60 1036 3738 61.1 500 3000 1-3-3 70-100 100NB3AR407530 Open 3000 Type IV 75 1036 3835 50.9 667 4000 1-3-3 100-150 100NB3AR407540 Open 4000 Type IV 75 1036 5105 67.3 667 4000 1-3-3 100-150 100NB3AR507530 Open 3000 Type V 75 1036 3837 50.5 667 4000 2-3-2 100-150 100NB3AR507540 Open 4000 Type V 75 1036 4740 61.9 667 4000 3-3-2 100-150 In Testing SST 3000 Type IV 75 1036 N/A N/A 667 4000 N/A 100-150 100SB3AR407540 SST 4000 Type IV 75 1036 4796 63.3 667 4000 1-3-3 100-150 100SB3AR507530 SST 3000 Type V 75 1036 3802 50.1 667 4000 2-3-2 100-150 100SB3AR507540 SST 4000 Type V 75 1036 4746 62.6 667 4000 3-3-3 100-150 100WB3AR507530 SST/Struts 3000 Type V 75 1036 3624 48.3 667 4000 2-3-2 100-150 In Testing SST/Struts 4000 Type V 75 1036 N/A N/A 667 4000 N/A 100-150 In Testing SST/Struts 3000 Type IV 75 1036 N/A N/A 667 4000 N/A 100-150 100WB3AR407540 SST/Struts 4000 Type IV 75 1036 4391 58 667 4000 1-3-3 100-150 100NB3AR410030 Open 3000 Type IV 100 1054 5003 48.8 533 4800 1-3-3 150-200 100NB3AR410040H Open 4000 Type IV 100 1054 8729 97 533 4800 1-3-4 150-200 In Testing Open 3000 Type V 100 1054 N/A N/A 533 4800 N/A 150-200 100NB3AR510040 Open 4000 Type V 100 1054 5936 57.5 533 4800 3-3-3 150-200 100SB3AR410030 SST 3000 Type IV 100 1054 4646 45.3 533 4800 1-3-3 150-200 100SB3AR410040 SST 4000 Type IV 100 1054 5904 57.1 533 4800 1-3-3 150-200 In Testing SST 3000 Type V 100 1054 N/A N/A 533 4800 N/A 150-200 100SB3AR510040 SST 4000 Type V 100 1054 6482 57.4 533 4800 3-3-3 150-200 100WB3AR410030 SST/Struts 3000 Type IV 100 1054 4224 41 533 4800 1-3-3 150-200 100WB3AR410040 SST/Struts 4000 Type IV 100 1054 5378 51.7 533 4800 1-3-3 150-200 In Testing SST/Struts 3000 Type V 100 1054 N/A N/A 533 4800 N/A 150-200 100WB3AR510040 SST/Struts 4000 Type V 100 1054 5344 53.2 533 4800 3-3-3 150-200 B3 = 3rd Generation Baffled Array SST = Solid Spun Top SST/struts = Solid Spun Top + Rings and Struts Open = No Decorative Option 1Color temperature is nominal, please see test report for specific chromaticity information 2Contact factory for TM21 information/Driver specification 3Due to the continuous advancements in LED technology, luminaire delivered lumen and efficacy is subject to change without notice at the discretion of King Luminaire 4Equivalence should always be confirmed by performing a photometric layout, due to the variability of performance requirements and application criteria POWER & LUMENS K199 CALIFORNIA - LED ACORN Test Voltage: 120V Nominal Color Temperature: 3000K & 4000K1 R1 1042 Engine Series: 42 Emitters (40 - 75W) To learn more about the R1 Optic, please see the R1 Optic Information Sheet 1063 Engine Series: 63 Emitters (100 -120W) LED ENGINE LED Engine + Driver Rated Life = 100,000 hrs2 Photometric Test Decorative Color IES Nominal Engine Delivered Efficacy mA @ Driver BUG HID Report Number Option Temperature Distribution Watts Series Lumens3 (LM/W)3 Emitter Output Current Rating Equivalent4 100NR1AR304030 Open 3000 Type III 40 1042 3003 76.4 278 1670 1-3-2 50-70 100NR1AR304040 Open 4000 Type III 40 1042 3676 91.2 278 1670 1-4-2 50-70 In Testing Open 3000 Type V 40 1042 N/A N/A 278 1670 N/A 50-70 100NR1AR504040 Open 4000 Type V 40 1042 3428 87 278 1670 2-4-2 50-70 100SR1AR304030 SST 3000 Type III 40 1042 2645 67.6 278 1670 1-3-2 50-70 100SR1AR304040 SST 4000 Type III 40 1042 3208 81.2 278 1670 1-3-2 50-70 In Testing SST 3000 Type V 40 1042 N/A N/A 278 1670 N/A 50-70 100SR1AR504040 SST 4000 Type V 40 1042 3110 78.3 278 1670 2-3-2 50-70 100WR1AR304030 SST/Struts 3000 Type III 40 1042 2270 57.8 278 1670 1-3-2 50-70 100WR1AR504040 SST/Struts 4000 Type V 40 1042 2630 66.4 278 1670 2-3-2 50-70 100NR1AR306030 Open 3000 Type III 60 1042 3934 72.6 417 2500 1-4-2 70-100 100NR1AR306040 Open 4000 Type III 60 1042 5526 85 417 2500 1-4-3 70-100 In Testing Open 3000 Type V 60 1042 N/A N/A 417 2500 N/A 70-100 100NR1AR506040 Open 4000 Type V 60 1042 5208 81.1 417 2500 2-4-2 70-100 100SR1AR306030 SST 3000 Type III 60 1042 3991 62.7 417 2500 1-3-2 70-100 100SR1AR306040 SST 4000 Type III 60 1042 4905 75.6 417 2500 1-2-3 70-100 In Testing SST 3000 Type V 60 1042 N/A N/A 417 2500 N/A 70-100 100SR1AR506040 SST 4000 Type V 60 1042 4683 72.8 417 2500 2-3-2 70-100 100WR1AR306030 SST/Struts 3000 Type III 60 1042 3401 53.2 417 2500 1-3-2 70-100 100WR1AR506040 SST/Struts 4000 Type V 60 1042 3978 61.7 417 2500 2-3-2 70-100 100NR1AR307530 Open 3000 Type III 75 1042 5258 66.5 566 3400 1-4-3 100-150 100NR1AR307540H Open 4000 Type III 75 1042 7596 100 566 3400 2-5-4 100-150 In Testing Open 3000 Type V 75 1042 N/A N/A 566 3400 N/A 100-150 100NR1AR507540 Open 4000 Type V 75 1042 6127 77.2 566 3400 3-4-3 100-150 100SR1AR307530 SST 3000 Type III 75 1042 4672 59.3 566 3400 1-3-3 100-150 In Testing SST 4000 Type III 75 1042 N/A N/A 566 3400 N/A 100-150 In Testing SST 4000 Type V 75 1042 N/A N/A 566 3400 N/A 100-150 100SR1AR507540 SST 4000 Type V 75 1042 5503 69.3 566 3400 3-3-3 100-150 100WR1AR307530 SST/Struts 3000 Type III 75 1042 3981 50.4 566 3400 1-3-3 100-150 100WR1AR507540 SST/Struts 4000 Type V 75 1042 4661 58.6 566 3400 3-3-2 100-150 100NR1AR310030 Open 3000 Type III 100 1063 6887 68.5 444 4000 2-5-3 150-175 100NR1AR310040H Open 4000 Type III 100 1063 9454 98 444 4000 2-5-4 150-175 In Testing Open 3000 Type V 100 1063 N/A N/A 444 4000 N/A 150-175 100NR1AR510040 Open 4000 Type V 100 1063 7861 76.8 444 4000 3-5-3 150-175 100SR1AR310030 SST 3000 Type III 100 1063 6096 60.5 444 4000 2-3-3 150-175 100SR1AR310040 SST 4000 Type III 100 1063 7064 68.8 444 4000 2-3-3 150-175 In Testing SST 3000 Type V 100 1063 N/A N/A 444 4000 N/A 150-175 In Testing SST 4000 Type V 100 1063 N/A N/A 444 4000 N/A 150-175 In Testing SST/Struts 3000 Type III 100 1063 N/A N/A 444 4000 N/A 150-175 100WR1AR510040 SST/Struts 4000 Type V 100 1063 6116 60 444 4000 3-3-3 150-175 In Testing Open 3000 Type III 120 1063 N/A N/A 555 5000 N/A 150-200 100NR1AR312040H Open 4000 Type III 120 1063 11101 97 555 5000 3-5-4 150-200 In Testing Open 3000 Type V 120 1063 N/A N/A 555 5000 N/A 150-200 In Testing Open 4000 Type V 120 1063 N/A N/A 555 5000 N/A 150-200 In Testing SST 3000 Type III 120 1063 N/A N/A 555 5000 N/A 150-200 In Testing SST 4000 Type III 120 1063 N/A N/A 555 5000 N/A 150-200 In Testing SST 3000 Type V 120 1063 N/A N/A 555 5000 N/A 150-200 In Testing SST 4000 Type V 120 1063 N/A N/A 555 5000 N/A 150-200 In Testing SST/Struts 4000 Type III 120 1063 N/A N/A 555 5000 N/A 150-200 In Testing SST/Struts 4000 Type V 120 1063 N/A N/A 555 5000 N/A 150-200 R1 = 1st Generation Refractive Array SST = Solid Spun Top SST/struts = Solid Spun Top + Rings and Struts Open = No Decorative Option FIXTURE OPTIONS K199 CALIFORNIA - LED ACORN Capital Options Decorative Options: K16 K18 K14 C/W PR K13 K23 C/W PR K24 C/W PR GE Globe Ring Solid Spun Top BELL Ring & Struts Finial Options: #1 #2 #3 4" 4 3/4" 5" HOW TO ORDER LINE VOLTAGE DECORATIVE OPTIONS 120V (120-277) GE - GE Ring SERIES 480V (347-480)* SST - Solid Spun Top 1036 (40 - 75W B3) BRS - BELL Ring & Struts IES LIGHTING CLASSIFICATION 1042 (40 - 75W B2, R1) *Select wattages available within 1054 (100W B3) this range, contact King Luminaire III - Type 3 (B2, R1) PAINT COLOR 1063 (100 - 120W B2, R1) IV - Type 4 (B3) CAPITAL GN - Federal Green V - Type 5 (B3, R1) K13, K14, K16 BE - Blue K18, K24, K23 GY - Gray SOURCE BN - Brown LUMINAIRE STYLE *Additional options BK - Black SSL - Solid State available on website BZ - Bronze K199R - California CCT *Additional options 3K - 3000K available on website 4K - 4000K K199R - - - (SSL) - - - - - - - - WATTAGE 40, 60, 75, 100, 120 PHOTO CONTROL OPTION *120 only available in R1 FINIAL OPTIONS PR - Photo Receptacle c/w cover and PR. Available with K14, K18, K24 & K23 #1, #2, #3 OPTICAL OPTIONS LENS OPTIONS PE - Photo Receptacle c/w cover, *Additional options B2 - B2 Optic (Bafï¬‚ed Array) AR - Acrylic Rippled B3 - B3 Optic (Bafï¬‚ed Array) PR - Polycarbonate Rippled PR and Photo Eye. Available CONNECTION available on website with K14, K18, K24 & K23 R1 - R1 Optic (Refractive Array) TB - Terminal Block PEBC - Photo Electric Buttoncell *leave blank if no photo control required A Member of The StressCrete Group of Companies www.stresscretegroup.com KING LUMINAIRE 1153 State Route 46N Jefferson, OH 44047 Phone: 1.800.268.7809 www.kingluminaire.com Project Type Catalog No. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Data Weight 10 lbs [4.6 kg] EPA 0.44 ft2 Ordering Information Sample Catalog No. GCM2 30H MV NW 2R GY 700 PCR7 WL LED Color 30H Drive Product Voltage Distribution Finish1 Options Code Temperature Current Code2 GCM2 30H MV 120-277V WW 3000K 2S Type 2 Short GY Gray 530 FDC3 Fixed Drive Current HV 347-480V NW 4000K 2R Type 2 Medium DB Dark 610 FFA4 Full field Adjustability CW 5000K 3R Type 3 Medium Bronze 700 LPCR Less Photocontrol 4 Type 4 BK Black 850 Receptacle 5 Type 5 1A PCR75 ANSI 7-wire Photo- control Receptacle 40H Drive PCR7-CR6 Control Ready 7-wire GCM2 40H PC Receptacle Current Code2 WL Utility Wattage Label 575 4B 4-Bolt Mounting 700 Bracket 850 RWG Rubber Wildlife 950 Guard 1A SWTB Straight Wire Terminal Block BBL Bubble Level Notes: 1 Gray, Black, and Dark Bronze standard. Consult factory for other finishes. 2 Specified drive current code is the factory set maximum drive current. Field adjustable current Accessories* selector enables standard dimming to lower wattage drive currents only. Consult factory if wattage HSSGCM7 House Side Shield, Snap-On* limits require a special drive current. CSSGCM8 Cul-De-Sac Side Shield, Snap-On* 3 Non-field adjustable, fixed drive current. Specify required drive current. Not available with PCR7-CR SPB9 Square Pole Horizontal Arm Bracket option. RPB9 Round Pole Horizontal Arm Bracket 4 The FFA option enables full field adjustability from the specified drive current code to all drive PTB9 Pole Top Tenon Horizontal currents available. This option is not DLC qualified. Arm Bracket 5 Field adjustable current selector included to enable standard dimming to lower wattage drive PTB29 Pole Top Tenon Horizontal currents only. Field changeable connectors included to enable connection to PCR7 (wireless node Arm Bracket (2@180o) dimming is disabled by default). WB9 Wall Horizontal Arm Bracket 6 Control-ready wired at factory for wireless node dimming. Supplied at maximum drive current. If a BSK Bird Deterrent Spider Kit lower drive current is required, consult factory. PC10 Twist Lock Photocontrol 7 Flush mounted house side shield. Shield cuts light off at 1/2 mounting height behind luminaire. LLPC10 Long-Life Twist Lock Photocontrol 8 Flush mounted cul-de-sac shield. Shield cuts light off at 1/2 mounting height behind luminaire and SC Twist Lock Shorting Cap 1-1/2 mounting height on either side of luminaire. *Accessories are ordered separately and not to be 9 Specify Color (GY, DB, BK) included in the catalog number. For factory installed 10 Specify MV (120-277V) or HV (347V-480V) HSS, CSS consult factory. Â©2017 Leotek Electronics USA. GCM_H-Series_Spec Sheet_090717. Specifications subject to change without notice. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Specifications Housing Quality Control Finish Die cast aluminum housing with universal Every luminaire is performance tested before Housing receives a durable, fade-resistant two-bolt slip fitter mounts to 1-1/4â€ to 2â€ and after a 2-hour burn-in period. Assembled polyester powder coat finish with 3.0 mil nominal (1-5/8â€ to 2-3/8â€ O.D.) diameter mast arm. in the USA. thickness. Finish tested to withstand 5000 hours in One-piece aluminum housing provides passive salt spray exposure per ASTM B117. Finish meets heat-sinking of the LEDs and has upper surfaces Optical Systems scribe creepage rating 8 per ASTM D1654. Finish that shed precipitation. Four-bolt mounting Micro-lens optical systems produce IESNA tested 500 hours in UV exposure per ASTM G154 bracket is available. Mounting provisions meet Type 2, Type 3, Type 4, or Type 5 distributions and meets ASTM D523 gloss retention. 3G vibration per ANSI C136.31-2010 Normal and are fully sealed to maintain an IP66 rating. Application, Bridge & Overpass. Mounting has Luminaire produces 0% total lumens above Listings/Ratings/Labels leveling adjustment from Â± 5Â° in 2.5Â° steps. 90â° (BUG Rating, U=0). Optional house side Luminaires are UL listed for use in wet locations Electrical components are accessed without shield cuts light off at 1/2 mounting height in the United States and Canada. DesignLights tools via a high-strength, non-conductive behind luminaire. Cul-de-sac shield provides Consortiumâ„¢ qualified product. Consult DLC polycarbonate door with quick-release latches. back and side light control for end of cul-de-sac QPL for Standard and Premium Classification Polycarbonate material meets UL 746C for applications. Both shields are field installable Listings. International Dark Sky Association listed. outdoor usage. Available rubber wildlife guard without tools. Luminaire is qualified to operate at ambient (RWG option) conforms to mast arm with no temperatures of -40Â°C to 40Â°C. gaps. Electrical Rated life of electrical components is 100,000 Photometry Light Emitting Diodes hours. Uses isolated power supply that is Luminaires photometrics are tested by certified High-flux/High-power white LEDs produce a 1-10V dimmable. Power supply is wired with independent testing laboratories in accordance minimum of 90% of initial intensity over 75,000 quick-disconnect terminals. Power supply with IES LM-79 testing procedures. hours of life based on IES TM-21 (L90 â‰¥ 75k features a minimum power factor of .90 and hours). LEDs are tested in accordance with IES <20% Total Harmonic Distortion (THD). EMC Warranty LM-80 testing procedures. LEDs have correlated meets or exceeds FCC CFR Part 15. Terminal 10-year limited warranty is standard on luminaire color temperature of 3000K (WW), 4000K block accommodates 6 to 14 gauge wire. Surge and components. (NW), or 5000K (CW) and 70 CRI minimum. protection complies with IEEE/ANSI C62.41 Vandal Resistance LEDs are 100% mercury and lead free. Category C High, 20kV/10kA and ANSI C136.2- Housing and optics rated to IK10 2015, 20kV/10kA. Field Adjustability Standards LED drive current can be changed in the field Controls Luminaire complies with: to adjust light output for local conditions (not 3-Wire photocontrol receptacle is standard. ANSI: C136.2, C136.3, C136.10, C136.13, C136.15, available with PCR7-CR option). The specified ANSI C136.41 7-wire (PCR7) photocontrol C136.22, C136.31, C136.35, C136.37, C136.41, drive current code will be the factory set receptacle is available. All photocontrol C62.41, C78.377, C82.77 maximum drive current and field adjustments receptacles have tool-less rotatable bases. Other: FCC 47 CFR, IEC 60598, ROHS II, UL 1449, can only be made to available lower wattage Wireless control module is provided by others. UL 1598 drive currents. Select the FFA option if full field adjustability to all available drive currents (1A max) is desired. The FFA option is not DLC qualified. Â©2017 Leotek Electronics USA. GCM_H-Series_Spec Sheet_090717. Specifications subject to change without notice. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Performance Data: 3000K (WW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) 530 48 5770 120 610 58 6700 116 30H 700 68 7620 112 850 82 8800 107 1A 101 10480 104 GCM2 575 73 8780 120 700 88 10230 116 40H 850 107 11960 112 950 121 13040 108 1A 135 14080 104 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Performance Data: 4000K (NW) and 5000K (CW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) 530 48 6330 132 610 58 7440 128 30H 700 68 8550 126 850 82 9830 120 1A 101 11720 116 GCM2 575 73 9590 131 700 88 11260 128 40H 850 107 13270 124 950 121 14390 119 1A 135 15430 114 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Â©2017 Leotek Electronics USA. GCM_H-Series_Spec Sheet_090717. Specifications subject to change without notice. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet BUG Ratings 3000K (WW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 850 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 40H 850 B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 4000K (NW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B3 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 5000K (CW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 Â©2017 Leotek Electronics USA. GCM_H-Series_Spec Sheet_090717. Specifications subject to change without notice. 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 1. NEH The grade of the driveways off 67th are about 8%. Noted. We have added elevations in the drive Please evaluate the transition from the ADA walkway isle and are provide a surface model which is to to the 8% and then back to the flat driveway areas to include the vertical curves to the contractor for ensure there will not be issues with cars bottoming the transition into the flatter, higher portion of out. Consider designing vlm ertical curves to smooth the site. transition. 2. NEH Distance between CB G2 and 12 is long and fairly flat, Added (I-4 on C3.5) consider adding CB to ensure drainage. 3. NEH There isn't a 20' offset from the infiltration trenches 20â€™ offset implemented. to buildings. 4. NEH C3.1 Notes on infiltration section, CSBC is listed as CBDS on Notes now indicate CSBC 3rd note from top. 5. NEH C6.2 Texture concrete at driveway intersections with the Texturing note added at each driveway. trail, 4'x4' scoring at a 45 degree angle. To increase driver awareness. 6. NEH Lighting plan needed, path lighting Lighting Plan included with resubmittal. 7. NEH Lighting for centennial trail required, see city Included with resubmittal standard. attached 8. NEH Street lighting for driveways is required. See lighting plan included with resubmittal. 9. NEH Drainage Task 4, Says further site visits will be done for the full This note was a remnant from the CUP Report Section 3 engineering submittal. Please update, as this is the submittal that had not been deleted. Site visits full engineering submittal. to observe off site conditions are completed. Page 1 of 6 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 10. NEH Drainage WWHM The pre-developed basin is larger than the mitigated The intent is to meet the LID and Flow Control Report basin, these areas must be equal. Standards by bypassing a small portion of the site and fully infiltrating the rest. This calculation has been greatly clarified in the updated report. A calculation showing the Predeveloped Basin vs Developed Basin 1 (Bypass) + Developed Basin 2 (infiltration) is now provided instead. 11. NEH Drainage Report needs to include a table, summarizing the A table breaking the Developed Basin 2 into Report required infiltration area and storage volume, and several sub-basins is provided, showing how comparing it to the proposed design infiltration areas the infiltration trenches mitigate the non- and storage volumes. Demonstrating that the bypassed areas. proposal meets or exceeds the requirements of the analysis. 12. NEH Drainage WWHM All information must be explained clearly in the body Noted. Report of the report, the WWHM output should be for my reference, all necessary information should be in the body of the report. 13. NEH Drainage Demonstrate and discuss that time of infiltration Added to the water quality discussion in Report meets requirements (draw down time) Chapter 4. 14. NEH Drainage By bypassing 0.74 acres you are not fully infiltrating The site is updated to meet the On Site Report the site, not meeting the requirements of LID design. Stormwater Management requirement by meeting the LID Performance Standard. This is clarified and better demonstrated in the updated report. 15. NEH Drainage Must detail a discussion of the mounding analysis in This is added to Section IV in the Flow Control Report the report. Section, but mainly references the geotechnical report included in Section VI of this report. Page 2 of 6 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 16. NEH Drainage Must discuss the drainage of the wall in the report. Discussed in Section III, Task 3. Report 17. NEH Drainage A clear basin map is required, showing, the bypass Provided in Section IV Report area and justification of how/why it can be bypassed. 18. NEH Drainage Show all pollution generating areas are going to Treatment catch basins are provided at the Report treatment areas. bottom of the west driveways. Water quality is met in the remainder of the site in the infiltration beds. 19. NEH Drainage It would appear the bypass areas are bypassing Treatment catch basins are provided at the Report treatment. All pollution generating areas must be bottom of the west driveways. Water quality is directed to treatment, including the impacted ROW met in the remainder of the site in the areas. infiltration beds. 20. NEH Drainage See drainage report requirements for tables, executive Noted. Report summary, etc. 21. NEH Drainage Provide conveyance sizing. Provided, see calculations starting on A-30 in Report the report Appendix. 22. NEH Drainage Downstream area of this project has been problematic Noted. Report in the past, including stormwater related lawsuits. The report needs to clearly demonstrate that this development meets or exceeds all stormwater requirements. 23. NEH Public and Private landscaping costs need to be added Added. Cost Worksheet included in resubmittal. to the Construction Cost Worksheet. 24. NEH On-site water and sewer mains and hydrants will be Updated, including additional water main public. Update Construction Cost Worksheet information noted in Comments 33 & 34, accordingly. additional sewer manhole from sewer redlines, etc Page 3 of 6 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 25. NEH Show easements for public water and sewer. Easements have been added to the overall water and sewer plans (C4.1 and C5.1) and are also depicted on the 4 20 scale sheets within each subset. 26. NEH If speed bumps are to be proposed provide in civil Added, see sheet C6.1 for locations and details. plans. 27. NCF- Fire Fire department connections (FDCs) shall NOT be Noted. Remote FDCs removed. Fire Sprinkler MM remote for this project. FDCs shall be a single inlet sizing was determined to be 4â€. installed on the exterior wall of each fire sprinkler riser closet on each building. Sprinkler designer shall ADDITIONAL COMMENT SENT VIA EMAIL calculate size of FDC inlet needed and get approval (NEH): from AFD after sprinkler permit applied for. The Fire Marshal is asking for 2.5â€ (female) FDC hook-up on the exterior of the buildings just outside the sprinkler riser room for this project. Unless there is some kind of difficult terrain that would make it difficult to access, in that case it should be stand alone, but still a 2.5â€ size. Indicate they are painted red. RESPONSE: Note indicating size and color added to C4.1. FDCs shown on exterior of sprinkler room added on C4.2 thru C4.5 28. NCF- Fire Fire hydrant located on west side of bldg. G is blocked Revised to be located SW of building G on NE MM by parking stall. Parking stall to be changed to no bump out of site intersection. parking area. No parking areas in front of hydrants, shall be in accordance with AMC 15.20.160. 29. NCF- Fire Fire hydrant located to northeast of bldg. H is blocked Moved to other side of drive isle and further MM by parking stall. Parking stall to be changed to no east. Page 4 of 6 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved parking area. No parking areas in front of hydrants, shall be in accordance with AMC 15.20.160. 30. NCF- Fire Fire lanes shall be marked in accordance with AMC Fire Lane Markings and lanes called out (See MM 15.10.070 Section 503.3. C6.1, we have left off of other sheets for plan clarity) 31. RM Per COA Standards W-220 and W-225 Fire Service 4â€ Ductile used. lines shall be ductile iron and a minimum of 4â€ into buildings. 32. RM C4.11 Water Water crossings with sewer shall have minimum of Revised as noted. 18â€ vertical clearance per COA Standards 4-1.06. Marks 1, 2, 4, 29, 35 and 38 do not meet this requirement. 33. RM C4.5 Water Extend 12â€ main along the north side of Building N to Main extended for future extension, but done East property line for future extension. Install blowoff north of Bldg K instead, as there is a large per COA Standard W-180 at property line. retaining wall that will be installed between M and N. 34. RM C4.4 Water C4.4: Extend main west through southern driveway Extended as noted. entrance and then north to connect to existing water main on the east side of 67th (approximate station 3+15). There is an existing stub extending east out of the roadway at the valve cluster for the hydrant that is on the west side of 67th. 35. FR Sewer attached Redlines incorporated. 10.2.19 Sewer Redline 1 10.2.19 Sewer Redline 2 Page 5 of 6 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 10/2/2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 36. FR Sewer Alignment of side sewers to mainline should be Sewers revised as noted in redline to eliminate perpendicular to main line sewer. small angles between SSMH pipes and updated to 90 degrees minimum. Please note that some manholes (#4, #9) include non-perpendicular connections, but at 120 degree angles for appropriate manhole channeling. 37. FR Sewer Alignment of Sewer main should be located in the lane We clarified via email with the City that this of travel see redlines. referred to Bldg D, and an SSMH (#2) is added as depicted in the redline. 38. LP All sheets Change construction approval block to Development Revised as noted. Services Block. attached Page 6 of 6 Table of Contents Section I â€“ Project Overview Section II â€“ Minimum Requirements Section III â€“ Off-Site Analysis Section IV â€“ Permanent Stormwater Control Plan Section V â€“ Construction Stormwater Pollution Prevention 1 Project Information 1.1 Existing Conditions 1.2 Proposed Construction Activities 2 Construction Stormwater Best Management Practices (BMPs) 2.1 The 13 Elements 2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits 2.1.2 Element 2: Establish Construction Access 2.1.3 Element 3: Control Flow Rates 2.1.4 Element 4: Install Sediment Controls 2.1.5 Element 5: Stabilize Soils 2.1.6 Element 6: Protect Slopes 2.1.7 Element 7: Protect Drain Inlets 2.1.8 Element 8: Stabilize Channels and Outlets 2.1.9 Element 9: Control Pollutants 2.1.10 Element 10: Control Dewatering 2.1.11 Element 11: Maintain BMPs 2.1.12 Element 12: Manage the Project 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs 3 Pollution Prevention Team 4 Monitoring and Sampling Requirements 4.1 Site Inspection 4.2 Stormwater Quality Sampling 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com 4.2.1 Turbidity Sampling 4.2.2 pH Sampling 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies 5.1 303(d) Listed Waterbodies 5.2 TMDL Waterbodies 6 Reporting and Record Keeping 6.1 Record Keeping 6.1.1 Site Log Book 6.1.2 Records Retention 6.1.3 Updating the SWPPP 6.2 Reporting 6.2.1 Discharge Monitoring Reports 6.2.2 Notification of Noncompliance Section VI â€“ Special Reports and/or Studies Section VII â€“ Other Permits Section VIII â€“ Operation and Maintenance Manual Appendix A â€“ WWHM Reports 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section I, Page 1 Section I â€“ Project Overview Section I Summary Overview Existing Condition Developed Condition Vicinity Map Aerial Photograph Overview This project is the development of twelve buildings (mostly for apartments), along with associated driveways, parking, sidewalks, and common areas to an 8.81-acre site at the northeast corner of the 67th Ave and 172nd Street NE Arlington, WA 98223 (TPN: 31052300300800). The site is currently undeveloped, forested along its south and east sides and with a Category IV wetland is located at the northwest corner. There is also a potentially regulated stream on the south side of the site that cannot be altered until permanently declassified. The rest of the site is cleared. In the developed condition, most of the site will be cleared and regraded, excluding some areas near the northeastern corner where the existing wetland is located and the south side where the stream flows through. Two entrances will be off 67th and due to the channel at the south side of the site no entrances will be from 172nd. The project will comply with the 2014 Stormwater Management Manual for Western Washington (herein referred to as the SWMMWW). The project must comply with Minimum Requirements #1-9 of the SWMMWW and must also submit a Construction Stormwater General Permit to the Washington State Department of Ecology because land disturbance will be over an acre. The site is within the Mixed-Use NC-Neighborhood Commercial zone. Surrounding areas include RLMD- Low to Moderate Density Residential to the north and east, GI- General Industrial to the west, and GC- General Commercial to the southwest. The site is at the southern border of the City of Arlington. Existing Condition The site totals 8.81 ac and is currently undeveloped. It is forested along the south and east sides of the site and has a Category IV wetland is located at the northwest corner. There also is a stream at the south side that will not be altered until permanently declassified. The rest of the site is cleared. In general, the site slopes from east to west with slopes ranging from 2.5% at the west side of the site to 24% at the east side of the site. Most of the site is flat to moderate except for a steep slope near the east side of the site where there is a maximum slope of about 24%. Per the geotechnical report, the 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section I, Page 2 underlying soil underneath 1.5 to 3 feet of fill on the western side of the site is Alluvium/Marysville Sand a medium dense, brown, gravelly sand. On the eastern side of the site it is Advance Outwash a medium dense, to very dense, gravely sand. The soils correspond to hydrologic soil group â€œC.â€ Groundwater was visible in the test pits and borings done for the geotechnical report. In addition to the groundwater table, there is also several instances of perched groundwater nearer the surface. Developed Condition Most of the site will be developed with fifteen apartment and mixed-use buildings along with associated parking, and common areas both indoor and outdoor. Vegetation will be preserved along the perimeter for open space and for community garden space, and an open play area is proposed in the center of the development. The wetland and its buffer near the northeast corner of the site and the stream and its buffer near the south property line will not be disturbed Water and sewer mains will be extended into the development, and stormwater will be controlled on site and will overflow to the city infrastructure in 67th Ave NE. Two entrances will be off 67th Ave NE to the west. A 30â€™ ROW dedication is required for the portion of the site adjacent to 67th Ave NE. Street improvements include a new sidewalk and planter strip along 67th Ave NE. As the stream and its buffer are not being impacted no street improvements along 172nd are required. The site totals 6.214 ac in the proposed condition with the dedication area included. The total amount of disturbance on and offsite including the right of way improvements totals 6.329 acres. The proposed lot coverage is as follows: Total Property: 374,517 sf (8.598 ac) Wetland and buffer(excluded): 39,840 sf (0.915 ac) Stream and buffer(excluded): 73,096 sf (1.678 ac) ROW dedication: 9,092 sf (0.209 ac) ROW improvements (beyond dedication area): 5,000 sf (0.115 ac) Total Area Used in Design: 275,673 sf (6.329 ac) Pervious Area Landscaping, Flat, C: 82,109 sf (1.885 ac) Total: 82,109 sf (1.885 ac) Impervious Areas Parking, Flat: 75,665 sf (1.737 ac) Roof, Flat: 63,708 sf (1.463 ac) Sidewalk, Flat: 54,191 sf (1.244 ac) Total: 193,564 sf (4.444 ac) Total Project Site: 275,673 sf (6.329 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section I, Page 3 PROJECT SITE Figure I-1 Vicinity Map 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section I, Page 4 PROJECT SITE Figure I-2 Aerial Photograph 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section II, Page 1 Section II â€“ Minimum Requirements Section II Summary Narrative Stormwater requirements were determined from the 2014 SWMMWW. This report is based on the steps recommended in Chapter 3 of Volume I in the SWMMWW. The project will comply with Minimum Requirements #1-9. Minimum Requirement #1: Preparation of Stormwater Site Plans: The stormwater site plan consists of this report and the civil drawings and is prepared in accordance with Chapter 3 of Volume 1 of the SWMMWW. Minimum Requirement #2: Construction Stormwater Pollution Prevention Plan (SWPPP): The SWPPP shall include a narrative and drawings. The SWPPP narrative shall include documentation that addresses the 13 elements of Construction Stormwater Pollution Prevention. See Section V and the civil drawings. A Construction Stormwater General Permit must also be submitted to the Washington State Department of Ecology because land disturbance will be over an acre. Minimum Requirement #3: Source Control of Pollution: Source control BMPs during construction are described in Section IV. For this site we have looked at the pool for compliance with 2014 SWMMWW S433. Minimum Requirement #4: Preservation of Natural Drainage Systems and Outfalls: Natural drainage patterns shall be maintained, and discharges from the project site shall occur at the natural location, to the maximum extent practicable. The manner by which runoff is discharged from the project site must not cause a significant adverse impact to downstream receiving waters and down-gradient properties. All projects shall submit an off-site qualitative analysis. A qualitative analysis of the upstream and downstream system entering the site is presented in Section III. Minimum Requirement #5: On-Site Stormwater Management: Per Table 2.5.1 from the SWMMWW, new development projects on any parcel inside the Urban Growth Area that trigger Minimum Requirements #1 through #9 must demonstrate compliance with the Low Impact Development Performance Standard and BMP T5.13; or use On-Site Stormwater Management BMPs from List #2. The project proposes to meet the Low Impact Development Standard using gravel infiltration trenches and BMP T5.13. See Section IV. Minimum Requirement #6: Runoff Treatment: This requirement applies to the new plus replaced hard surfaces and the converted vegetation areas. Runoff treatment is required because the project adds more than 5,000 sf of pollution-generating hard surface. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section II, Page 2 Minimum Requirement #7: Flow Control: Projects must provide flow control to reduce the impacts of stormwater runoff from hard surfaces and land cover conversions. The project will meet the flow control duration standard using gravel infiltration trenches designed to infiltrate 100% of site runoff. See Section IV. Minimum Requirement #8: Wetlands Protection: This requirement applies only to projects whose stormwater discharges into a wetland, either directly or indirectly through a conveyance system. Stormwater from the site does not discharge into a wetland and therefore this requirement is not applicable. The Category IV wetland on the north is not anticipated to be the discharge location of the existing site due to the existing layout of the site topography. The existing inflow via a swale along the north property line will be maintained. Minimum Requirement #9: Operation and Maintenance: An Operation and Maintenance Manual that is consistent with the provisions in Volume V of the SWMMWW is required for proposed Stormwater Treatment and Flow Control BMPs/facilities. The party (or parties) responsible for maintenance and operation shall be identified in the operation and maintenance manual. For private facilities, a copy of the Operation and Maintenance Manual shall be retained on-site or within reasonable access to the site and shall be transferred with the property to the new owner. For public facilities, a copy of the operation and maintenance manual shall be retained in the appropriate department. A log of maintenance activity that indicates what actions were taken shall be kept and be available for inspection. Please see Section VIII. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section III, Page 1 Section III â€“ Off-Site Analysis Section III Summary Task 1 â€“ Define and map the study area Task 2 â€“ Review all available information of the study area Task 3 â€“ Field inspect the area Task 4 - Describe the drainage system, and its existing and predicted problems Task 1 â€“ Define and map the study area Development projects that discharge stormwater off-site shall submit an off-site analysis report that assesses the potential off-site water quality, erosion, slope stability, and drainage impacts associated with the project and that proposes appropriate mitigation of those impacts. An initial qualitative analysis shall extend downstream for the entire flow path from the project site to the receiving water or up to one mile, whichever is less. Nearly all runoff from developed areas will be directed to infiltration trenches designed to infiltrate 100% of contributing runoff. The infiltration trenches are designed with the overflow discharge pipes from the trenches connecting to city infrastructure in 67th Ave NE. The overflow paths will be studied in this section. City Infrastructure OVERFLOW CATCH BASIN INFILTRATION ONSITE EDGECOMB CREEK (MIDDLE FORK OF QUILCEDA CREEK) Figure III-1 Study Area from Stormwater Infrastructure Map of City of Arlington. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section III, Page 2 Figure III- 1 depicts the downstream flow path from the site. Existing drainage in 67th Ave flows north and outfalls into a bioretention pond on the west side of the street. From there through a ditch and culvert system and a piped system the stormwater outfalls into the Edgecomb Creek/Middle Fork Quilceda Creek which outfalls into the Possession Sound (Puget Sound) Task 2 â€“ Review all available information on the study area The project site is currently cleared but does not contain any stormwater improvements. A wetland at the northeast corner will not be impacted by the construction activity. Existing stormwater infrastructure in the adjacent streets was determined from the survey and the Cityâ€™s online maps. The site is within the Edgecomb Creek/Quilceda Creek drainage basin which outlets to the Possession Sound. The north side 172nd Street NE (SR 531) flows into ditch system on the south side of the subject property, and the south side flows into Edgecomb Creek. Edgecomb Creek used to cross SR 531 from south to north in a 36-inch culvert, where it would then flow through the subject property before crossing back under SR 531 again in a 60-inch culvert back to the south side of the road. WSDOT Job Number 16A032 realigned this Creek to be entirely on the south side of the right of way. As part of this work, the 36-inch pipe was abandoned. The 60-inch culvert remains in place. As built drawings from that project are provided in this report. See Figures III-2 and III-3. There are catch basins and conveyance pipes in 67th Ave NE which discharge to the north into stormwater ponds which overflow to the southwest into Edgecombe Creek (Figure III-4). According to the wetland report in Section VI the wetland at the northeast corner of the site is a Type IV wetland. The wetland will not be impacted during construction, and its buffer will only be impacted as allowed by the wetland report by Soundview Consultants. Task 3 â€“ Field inspect the study area A site visit was conducted on May 29, 2019. Weather was warm and rain had not recently occurred. The area reviewed was the site (with emphasis on the onsite ditch that was previously a portion of Edgecomb Creek), SR 531, 67th, and several nearby drainage areas and culverts. The on-site ditch takes flows from the north side of SR 531 for roughly four thousand feet upstream of the project. These entire the site via a ditch system from the Atonement Free Lutheran Church. The Edgecomb Creek basin no longer flows through the site, so on the ditch was mostly dry, other than some puddled areas following the various log drops within the bottom of the channel. For the current project, the ditch system is expected to remain, with a 150â€™ buffer where currently classified as a stream, and will continue to convey along the same upstream flows. Flows have been preliminarily quantified to evaluate the upstream drainage entering and exiting the site. Running the upstream calculations using the SBUH method in HydroCAD, the upstream flows through the stream are as follows: 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section III, Page 3 2 Year Peak Flow: 12.32 cfs 25 Year Peak Flow: 26.63 cfs 100 Year Peak Flow: 33.79 cfs Calculations are included within this section of the report, but for the current proposed project, we have considered this area to be undisturbed, bypassing through the site. In addition to the upstream conveyance passing through the ditch system, the site also proposes to install a block wall on its eastern edge. Drainage behind the wall is designed on the block wall details by Zipper Geo Associates, included in Section VI of this report. These drains will be conveyed to the ditch system along the north side of the property, which drains to the Category IV Wetland. The area of development on the site is generally the portion of the property which flows westerly toward 67th Ave NE. The infiltration trenches on site are being designed to infiltrate 100% of contributing runoff, with the street improvements and small portions of the siteâ€™s lower, west areas bypassing directly into the storm system, at a level meeting flow control and LID standards. Task 4 â€“ Describe the drainage system, and its existing and predicted problems The drainage system is described in Task 2. As the main contributing upstream flows will remain undisturbed by the development, and much of the existing site is being infiltrated, downstream drainage problems are not anticipated. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section III, Page 4 Figure III-2 Upstream flows entering site from SR 531 roadside ditch Figure III-3 On-site ditch (formally Edgecomb Creek route) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section III, Page 5 Figure III-4 Looking north on 67th. Trees on left side of picture border off site pond/bioretention 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section III, Page 6 Figure III-5 Edgecomb Creek now flow on south side of SR 531 without crossing. Shown here crossing under 67th, south of intersection. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Reserve at Arlington - CG # 19054.20 October 21, 2019 Drainage Report Section IV, Page 1 Section IV â€“ Permanent Stormwater Control Plan Section IV Summary On-Site Stormwater Management Runoff Treatment Flow Control Source Control The developed site is broken into two sub-basins. The first sub-basin (Developed Basin 1) is a bypass. The majority of the site is in the second sub-basin (Developed Basin 2), which is routed to a series of several infiltration beds spaced throughout the project. Figure IV-1 depicts the separation of the basins on site. The site meets the Low Impact Development (LID) Performance standard and the Flow Control Standard by 100% infiltrating the majority of developed runoff, and bypassing areas on the west side of the site where the elevation is too low to infiltrate due to the groundwater table. Water quality is generally addressed by a treatment layer under the infiltration beds. The driveways on the west side of the site are treated with modified catch basins designed for enhanced treatment. The predeveloped (forested) and developed land cover used in the WWHM model is as follows (excluding wetland area and the stream area, as well as their buffers). See Appendix A for more detail within the WHHM report. The proposed lot coverage is as follows: Predeveloped (Basin 1 and 2): Pervious Areas Forested, Flat, C: 183,900 sf (4.222 ac) Forested, Moderate, C: 34,088 sf (0.783 ac) Forested, Steep, C: 57,684 sf (1.324 ac) Total: 275,673 sf (6.329 ac) Developed Project Site- Bypass (Developed Basin 1) Pervious Area Landscaping, Flat, C: 13,927 sf (0.320 ac) Total: 13,927 sf (0.320 ac) Impervious Areas Parking, Flat: 5,015 sf (0.115 ac) Sidewalk, Flat: 14,183 sf (0.326 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Reserve at Arlington - CG # 19054.20 October 21, 2019 Drainage Report Section IV, Page 2 Total: 19,198 sf (0.441 ac) Total Bypass Area: 33,125 sf (0.761 ac) Developed Project Site- To Infiltration Trench (Developed Basin 2) Pervious Area Landscaping, Flat, C: 68,182 sf (1.565 ac) Total: 68,182 sf (1.565 ac) Impervious Areas Parking, Flat: 70,650 sf (1.622 ac) Roof, Flat: 63,708 sf (1.463 ac) Sidewalk, Flat: 40,008 sf (0.918 ac) Total: 174,366 sf (4.003 ac) Total Area to Infiltration Trench: 242,548 sf (5.568 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Reserve at Arlington - CG # 19054.20 October 21, 2019 Drainage Report Section IV, Page 3 Basin 2a- excludes building N Trenches 106-108 Basin 2b - includes Basin 2c- building N Trenches 101-105 Trenches 109-110 Building N drains Basin 1- Bypass to Basin 2b Figure IV-1 Site Infiltration Basins, along with bypass basin. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Reserve at Arlington - CG # 19054.20 October 21, 2019 Drainage Report Section IV, Page 4 Infiltration was only found to be feasible by raising the site above the groundwater and using shallow trenches. Most hard surfaces (all in Developed Sub-basin 2) will be routed to infiltration trenches on- site. Because the site was raised, an appropriate fill material for underneath the proposed infiltration beds was selected. The infiltration rate used for design was 0.94 in/hr. per the recommendations in the geotechnical report. This rate will need to be field verified as construction occurs. WWHM2012 was used to determine the total amount of gravel infiltration trench required to infiltrate 100% of the runoff in Developed Sub-Basin 2. The total trench area outputted in the WWHM report of 37,000 sf was divided into 10 trenches as shown on the construction plans. The trenches depicted on the plans have a total surface area of 37,140 sf. Catch basins, area drains, roof drains and the pool drain all connect to the infiltration trenches for on-site stormwater management, flow control, and the majority of the water quality standard. On-Site Stormwater Management The project must meet Minimum Requirement #5. Per Table 2.5.1 from the SWMMWW, new development projects on any parcel inside the Urban Growth Area that trigger Minimum Requirements #1 through #9 must either: 1. Use On-Site Stormwater Management BMPs from List #2 for all surfaces within each type of surface in List #2; or 2. Demonstrate compliance with the LID Performance Standard and BMP T5.13. The project proposes to meet the LID Performance Standard and BMP T5.13. The modeling results for the site showing the bypassed area and infiltration area combining to meet this standard are provided and begin on A-2 in Appendix A. Flow Control The infiltration trenches were sized in WWHM to infiltrate 100% of Sub-Basin 2. When comparing the two Developed Sub-basins to the Predeveloped the Flow Control Duration Standard for Minimum Requirement #7 is met. Please see the WWHM report in Appendix A (A-2) for compliance shown incorporating the bypassed basin. Beginning on A-12 is a more specific model of basin two, breaking the trenches into sections to verify 100% infiltration. In designing the trenches an important concern was to raise them up enough to avoid issues with the groundwater. Mounding analyses are provided in the â€œStormwater Infiltration Potentialâ€ section of the geotechnical report. The groundwater mounding analysis is described in detail on page 23. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Reserve at Arlington - CG # 19054.20 October 21, 2019 Drainage Report Section IV, Page 5 It is important to note that the table being treated as the layer of concern is perched groundwater and interflow, much of which is anticipated to be removed from the site when developed with appropriate drainage systems as shown on the plan. Figure 3 in the geotechnical report indicates the level of perched and actual groundwater the grade is being built up and drainage behind the wall is expected to â€œcut offâ€ much of this perched groundwater. Runoff Treatment Runoff treatment is required for pollution-generating hard surfaces (PGHS). Per Chapter 2.1 of Volume V of the SWMMWW, enhanced treatment is required since the project is a multi-family residential project that discharges directly to fresh waters or conveyance systems tributary to fresh waters designed for aquatic life use. According to the geotechnical report attached in Section VI the surface soil is suitable for on-site pollutant treatment. This soil will not be used in design however, as the perched groundwater could be present. The fill selected for areas underlying treatment areas has the appropriate cation exchange capacity to treat the stormwater. Oil water separator fittings per City details are included in upstream catch basins collecting pollution generating impervious surfaces to provide pretreatment prior to discharge into the trenches. 37,000 sf of infiltration surface area is provided via 10 large infiltration beds on the site. The mitigated water quality design volume (6-Year, 24-hour rain event) for Basin 2 was calculated to be 0.5288 acre-ft. With an infiltration rate of 0.94 inches per hour the volume can be infiltrated within 48 hours. 0.5288 ac-ft = 23,034 cubic feet (water quality design volume) 37,000 sf * 0.94 in/hr. * 1 ft/12 in * 48 hours = 139,120 cubic feet (infiltration capacity in 48 hours) The drawdown check works with a safety factor of approximately 6. The water quality design volume calculation is included in Appendix A, on page A-25. PGHS in the bypass areas only consists of the two driveways off of 67th. As this area does not flow towards the infiltration trenches providing water quality treatment for the site Oldcastle Precast BioPod Catch Basins are provided to provide Enhanced Treatment to these small areas. The treatment facilities were sized to treat the water quality design flow rate using WWHM. The design flow rate is defined as â€œthe flow rate at or below which 91% of the runoff volume, as estimated by an approved continuous runoff model, will be treatedâ€ (SWMMWW). The BioPod was sized for the entire area draining to each catch basin including driveway and other surfaces draining towards the pollution generating surfaces. Table IV-1 presents the water quality flows for each catch basin. BPU-IB-46 was selected for both catch basins as the water quality flows from the WWHM model for each perspective area are closest to without exceeding the treatment flow capacity of this BioPod. See Figure IV-2 for the BioPod flows. See 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Reserve at Arlington - CG # 19054.20 October 21, 2019 Drainage Report Section IV, Page 6 Appendix A pages A-26 for the water quality WWHM model, and the output values for the online and offline flows used to size the BioPod for each basin. Catch Basin # Driveway(ac) Sidewalk(ac) Landscape 15-Min Online 15-Min Offline (ac) WQ Flow (cfs) WQ Flow (cfs) North 0.049 0.023 0.017 0.0136 0.0077 Driveway South 0.047 0.023 0.058 0.0129 0.072 Driveway Table IV-1. Water Quality flow summary from WWHM report. Figure IV-2 Manufacturer treatment flows for each selected BioPod 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 7 Source Control The pool is required to go into the stormwater system and must meet the requirements of S433: BMPs for Pools, Spas, Hot Tubs and Fountains in the SWMMWW. Many of the requirements in this Source Control standard are regarding standard maintenance of the pool such as cleaning, monitoring chemical & pH levels, etc. The civil engineering design requirements are as follows: Discharge to the ground must comply with Ecologyâ€™s Ground Water Standards, Chapter 173-200 WAC o The project routes runoff from impervious surfaces, including the pool to infiltration trenches, so this requirement applies. This section of the WAC allows for 250 ppm (parts per million) of chlorides, while the proposed pool will only be dosed at 2 ppm, well below the maximum. Pollutant Control o It is not typically recommended that pools be drained, but were this to be needed, the City of Arlington does not allow connections into the sanitary sewer. It is expected that if the pool is drained, it will not be during rain events, and that the water can be conveyed to the on-site stormwater system, where it will infiltrate within the requirements of Chapter 173-200 WAC mentioned above. The infiltration system stubs to the infiltration system, which has significantly more volume than the pool. It will infiltrate prior to discharge to the storm system. Discharges to Storm System o It is not expected that pool will get past the onsite stormwater management facilities and into the City storm drains. The requirement is 0.1 ppm, but it is our expectation that it will all be infiltrated on site per the discussions in the previous two bullet points. Permanent Links to Storm System o The pool is not supposed to be permanently connected to storm. The pool facilities will not be, other than trench drains spaced 5 feet off their perimeters. These will capture mostly rain, but also splashes, pool water dripping off of people, etc. If the entire pool needs to be drained to the storm, it should be done with a hose or sump pump. For the more typical civil engineering calculations, such as flow control, the amenity area including the pool, hot tub and splash pad have simply been modeled as impervious surface. Many other items will be noted for the pool permit, including typical operations, information about the chemical storage, sludge disposal, etc., but those are not with the permit requirements for the site development. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 1 Section V â€“ Construction Stormwater Pollution Prevention Section V Summary Narrative Calculations Erosion control details are provided consistent with the 2014 DOE Manual. Erosion control plan sheets are provided in full size as a part of the civil drawing set. A Construction Stormwater General Permit (CSGP) is required through the Department of Ecology because land disturbing activities total over one acre. This will be performed roughly on the same timeline as full engineering submittals to the City of Arlington. A summary of the elements is provided below. Element 1: Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land-disturbing activities begin. Clearing limits will be to the extents of necessary land disturbance. The BMPs relevant to marking the clearing limits that will be applied for this project include: High Visibility Plastic or Metal Fence (BMP C103) Element 2: Establish Construction Access Construction access or activities occurring on unpaved areas shall be minimized, yet where necessary, access points shall be stabilized to minimize the tracking of sediment onto public roads. Stabilized construction entrances will be added on the west and east south of the site at the locations of the proposed entrances to the apartment complex. This will help to prevent sediment tracking into the right of way. Stabilized Construction Entrance (BMP C105) Element 3: Control Flow Rates Stormwater will be directed to a temporary sediment pond at the northwest corner of the site, and flow rates will be controlled per the BMPs listed below. The construction of the temporary sediment pond must be done as one of the first steps in grading. Stormwater should not be directed to infiltration facilities until the site has been stabilized. Protect Low Impact Development BMPs from compaction and sedimentation per Element 13. Temporary Sediment Pond (BMP C241) Check Dams (C207) Silt Fence (BMP C233) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 2 Element 4: Install Sediment Controls Stormwater must be filtered prior to being discharged to an infiltration system or leaving the construction site. A silt fence will be installed around the entire perimeter of the site. A temporary sediment pond will be installed at the northwest corner of the site where some sediment will be able to settle out prior to discharge to the public storm system. If sediment controls are ineffective and turbid water is observed discharging from the site, additional energy dissipation BMPs and sediment control BMPs should be installed such as wattles. It may also be necessary to stabilize soils per Element 5 that are not being worked on. The specific BMPs to be used for controlling sediment on this project include: Silt Fence (BMP C233) Temporary Sediment Pond (BMP C241) Wattles (BMP C235) Element 5: Stabilize Soils Exposed and unworked soils shall be stabilized with the application of effective BMPs to prevent erosion throughout the life of the project. The specific BMPs for soil stabilization that shall be used on this project include: Temporary and Permanent Seeding (BMP C120) Mulching (BMP C121) Nets and Blankets (BMP C122) Plastic Covering (BMP C123) Sodding (BMP C124) Topsoiling/Composting (BMP C125) Surface Roughening (BMP C130) Dust Control (BMP C140) Element 6: Protect Slopes Exposed slopes shall be stabilized with BMPs found in Element 5. Element 7: Protect Drain Inlets Drain inlets near the site and those made operable on-site will be protected from sedimentation. Stormwater shall not enter the conveyance system without first being filtered or treated to remove sediment. Inlet protection devices shall be cleaned or removed and replaced when sediment has filled one-third of the available storage (or as specified by the manufacturer). The specific BMPs to be used for protecting drain inlets are: Storm Drain Inlet Protection (BMP C220) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 3 Element 8: Stabilize Channels and Outlets All temporary on-site conveyance channels shall be designed, constructed, and stabilized to prevent erosion during construction. The specific BMPs to be used for are: Channel Lining (BMP C202) Check Dams (BMP C207) Outlet Protection (BMP C209) Element 9: Control Pollutants Design, install, implement and maintain effective pollution prevention measures to minimize the discharge of pollutants. The suggested BMPs are: Concrete Handling (BMP C151) Saw Cutting and Surfacing Pollution Prevention (BMP C152) Material Delivery, Storage and Containment (BMP C153) Element 10: Control Dewatering De-watering is not anticipated. Element 11: Maintain BMPs All temporary and permanent erosion and sediment control BMPs shall be maintained and repaired as needed to ensure continued performance of their intended function. Element 12: Manage the Project â€¢ Phase development projects to the maximum degree practicable and consider seasonal work limits. â€¢ Inspection and monitoring â€“ Inspect, maintain, and repair all BMPs as needed to assure continued performance of their intended function. Conduct site inspections and monitoring in accordance with the Construction Stormwater General Permit or local plan approval authority. â€¢ Maintain an Updated Construction SWPPP - This SWPPP shall be retained on-site or within reasonable access to the site. - The SWPPP shall be modified whenever there is a change in the design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the state. - The SWPPP shall be modified if, during inspections or investigations conducted by the owner/operator, or the applicable local or state regulatory authority, it is determined that the SWPPP is ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. The SWPPP shall be modified as necessary to include additional or modified BMPs designed to correct problems identified. Revisions to the SWPPP shall be completed within seven (7) days following the inspection. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 4 Element 13: Protect Low Impact Development BMPs Gravel infiltration trenches are proposed throughout the site. All heavy equipment should be kept off infiltration facilities that have been excavated to final grade to retain the infiltration rate of the soil. The proposed trenches shall be protected from compaction during construction with orange protective fencing. Calculations Figure V-1 Sediment Pond Sizing 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 5 Construction Stormwater General Permit Stormwater Pollution Prevention Plan (SWPPP) for Centennial Park Prepared for: The Washington State Department of Ecology Northwest Regional Office Permittee / Owner Developer Operator / Contractor Williams Investments Williams Investments Exxel Pacific 67th Ave and 172nd Street NE, Arlington, WA 98223 Certified Erosion and Sediment Control Lead (CESCL) Name Organization Contact Phone Number Joshua Taylor Taylor Excavating 360.629.3078 SWPPP Prepared By Name Organization Contact Phone Number Darina Litushko CG Engineering 425.778.8500 SWPPP Preparation Date July 2019 Project Construction Dates Activity / Phase Start Date End Date Construction August 2019 December 2020 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 6 Table of Contents 1 Project Information .............................................................................................................. 9 1.1 Existing Conditions ........................................................................................................................ 9 1.2 Proposed Construction Activities ................................................................................................ 10 2 Construction Stormwater Best Management Practices (BMPs) ........................................ 11 2.1 The 13 Elements .......................................................................................................................... 11 2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits .................................................... 11 2.1.2 Element 2: Establish Construction Access .......................................................................... 12 2.1.3 Element 3: Control Flow Rates ........................................................................................... 13 2.1.4 Element 4: Install Sediment Controls ................................................................................. 14 2.1.5 Element 5: Stabilize Soils .................................................................................................... 15 2.1.6 Element 6: Protect Slopes .................................................................................................. 16 2.1.7 Element 7: Protect Drain Inlets .......................................................................................... 17 2.1.8 Element 8: Stabilize Channels and Outlets ......................................................................... 18 2.1.9 Element 9: Control Pollutants ............................................................................................ 19 2.1.10 Element 10: Control Dewatering ........................................................................................ 22 2.1.11 Element 11: Maintain BMPs ............................................................................................... 23 2.1.12 Element 12: Manage the Project ........................................................................................ 24 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs ............................................... 27 3 Pollution Prevention Team ................................................................................................. 28 4 Monitoring and Sampling Requirements ........................................................................... 29 4.1 Site Inspection ............................................................................................................................. 29 4.2 Stormwater Quality Sampling ..................................................................................................... 29 4.2.1 Turbidity Sampling .............................................................................................................. 29 4.2.2 pH Sampling ........................................................................................................................ 31 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies ....................... 32 5.1 303(d) Listed Waterbodies .......................................................................................................... 32 5.2 TMDL Waterbodies ..................................................................................................................... 32 6 Reporting and Record Keeping ........................................................................................... 33 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 7 6.1 Record Keeping ........................................................................................................................... 33 6.1.1 Site Log Book ...................................................................................................................... 33 6.1.2 Records Retention .............................................................................................................. 33 6.1.3 Updating the SWPPP .......................................................................................................... 33 6.2 Reporting..................................................................................................................................... 34 6.2.1 Discharge Monitoring Reports ........................................................................................... 34 6.2.2 Notification of Noncompliance .......................................................................................... 34 List of Tables Table 1 â€“ Summary of Site Pollutant Constituents ....................................................................................... 9 Table 2 â€“ Pollutants ..................................................................................................................................... 19 Table 3 â€“ pH-Modifying Sources ................................................................................................................. 19 Table 4 â€“ Dewatering BMPs ........................................................................................................................ 22 Table 5 â€“ Management ............................................................................................................................... 24 Table 6 â€“ BMP Implementation Schedule ................................................................................................... 25 Table 7 â€“ Team Information ........................................................................................................................ 28 Table 8 â€“ Turbidity Sampling Method ......................................................................................................... 29 Table 9 â€“ pH Sampling Method ................................................................................................................... 31 List of Appendices Appendix/Glossary A. Site Map B. BMP Detail C. Correspondence D. Site Inspection Form E. Construction Stormwater General Permit (CSWGP) F. 303(d) List Waterbodies / TMDL Waterbodies Information G. Contaminated Site Information H. Engineering Calculations 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 8 List of Acronyms and Abbreviations Acronym / Abbreviation Explanation 303(d) Section of the Clean Water Act pertaining to Impaired Waterbodies BFO Bellingham Field Office of the Department of Ecology BMP(s) Best Management Practice(s) CESCL Certified Erosion and Sediment Control Lead CO2 Carbon Dioxide CRO Central Regional Office of the Department of Ecology CSWGP Construction Stormwater General Permit CWA Clean Water Act DMR Discharge Monitoring Report DO Dissolved Oxygen Ecology Washington State Department of Ecology EPA United States Environmental Protection Agency ERO Eastern Regional Office of the Department of Ecology ERTS Environmental Report Tracking System ESC Erosion and Sediment Control GULD General Use Level Designation NPDES National Pollutant Discharge Elimination System NTU Nephelometric Turbidity Units NWRO Northwest Regional Office of the Department of Ecology pH Power of Hydrogen RCW Revised Code of Washington SPCC Spill Prevention, Control, and Countermeasure su Standard Units SWMMEW Stormwater Management Manual for Eastern Washington SWMMWW Stormwater Management Manual for Western Washington SWPPP Stormwater Pollution Prevention Plan TESC Temporary Erosion and Sediment Control SWRO Southwest Regional Office of the Department of Ecology TMDL Total Maximum Daily Load VFO Vancouver Field Office of the Department of Ecology WAC Washington Administrative Code WSDOT Washington Department of Transportation WWHM Western Washington Hydrology Model 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 9 1 Project Information Project/Site Name: Centennial Park Street/Location: 18506 Smokey Point Blvd. City: Arlington State: WA Zip code: 98223 Subdivision: N/A Receiving waterbody: Creek 1.1 Existing Conditions Total acreage (including support activities such as off-site equipment staging yards, material storage areas, borrow areas). Total acreage: 8.81 ac Disturbed acreage: 6.36 ac Existing structures: 0 ac Landscape 0 ac Drainage patterns: The site generally slopes downward from the E to the W. Grades are moderate to steep on the east side of the property and mostly flat otherwise. Existing Bushes, shrubs, grass, wetland, trees Vegetation: Critical Areas (wetlands, streams, high Slopes on east property line, Relict erosion risk, steep or difficult to stabilize Stream Channel, Category IV Wetland slopes): List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL) for the receiving waterbody: Edgecomb Creek is not listed as having impairments on the EPA website. Table 1 includes a list of suspected and/or known contaminants associated with the construction activity. No known or suspected contaminants are associated with the site. Table 1 â€“ Summary of Site Pollutant Constituents Constituent Location Depth Concentration (Pollutant) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 10 1.2 Proposed Construction Activities Description of site development (example: subdivision): Multi-family residential. The project will add 15 buildings. These include one mixed use building, two common buildings, and 12 apartment buildings. Description of construction activities (example: site preparation, demolition, excavation): Clearing and grubbing of existing forested and brushed areas; excavating, filling, and grading; utility installation, parking lot surfacing, building construction and frontage improvements. Description of site drainage including flow from and onto adjacent properties. Must be consistent with Site Map in Appendix A: The site generally slopes downward from the east to the west and drainage in the developed condition is expected to flow in the same direction. Description of final stabilization (example: extent of revegetation, paving, landscaping): Buildings, parking lots and driveways will cover about 50% of the site, with approximately 20% of the site being landscaping and the remaining 30% being encombered by critical areas (Category IV wetland and stream). Contaminated Site Information: Proposed activities regarding contaminated soils or groundwater (example: on-site treatment system, authorized sanitary sewer discharge): N/A 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 11 2 Construction Stormwater Best Management Practices (BMPs) The SWPPP is a living document reflecting current conditions and changes throughout the life of the project. These changes may be informal (i.e., hand-written notes and deletions). Update the SWPPP when the CESCL has noted a deficiency in BMPs or deviation from original design. 2.1 The 13 Elements 2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land-disturbing activities begin. Trees that are to be preserved, as well as all sensitive areas and their buffers, shall be clearly delineated in the field. In general, natural vegetation and native topsoil shall be retained in an undisturbed state to the maximum extent possible. A protective barrier shall be placed around the protected trees prior to land preparation or construction activities, and shall remain in place until all construction activity is terminated. No equipment, chemicals, soil deposits or construction materials shall be placed within the protective barriers. Any landscaping activities subsequent to the removal of the barriers shall be accomplished with light machinery or hand labor. High Visibility Fence will be placed around the entire site running along the property lines. List and describe BMPs: â€¢ BMP C101: Preserving Natural Vegetation â€¢ BMP C102: Buffer Zones â€¢ BMP C103: High Visibility Plastic or Metal Fence â€¢ BMP C233: Silt Fence Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 12 2.1.2 Element 2: Establish Construction Access Limit vehicle access to one route, if possible. Construction access or activities occurring on unpaved areas shall be minimized, yet where necessary, access points shall be stabilized to minimize the tracking of sediment onto public roads. Street sweeping, street cleaning, or wheel wash/tire baths may be necessary if the stabilized construction access is not effective. If sediment is tracked off site, clean the affected roadway thoroughly at the end of each day, or more necessary as needed. All wheel wash wastewater shall be controlled on-site and CANNOT be discharged into waters of the State. Stabilized construction entrances will be added along the west edges of the site at the locations of the proposed entrances to the complex. This will help to prevent sediment tracking into the right of way. List and describe BMPs: â€¢ BMP C105: Stabilized Construction Entrance/Exit â€¢ BMP C107: Construction Road/Parking Area Stabilization Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 13 2.1.3 Element 3: Control Flow Rates The project site has a gentle slope from east to west for most of the site (<2%). There is a moderate slope near the west side of the site (12%). Stormwater will be directed to a temporary detention pond at the northwest corner of the site, and flow rates will be controlled per the BMPs listed below. The construction of the temporary sediment pond must be done as one of the first steps in grading. Infiltration facilities will be constructed for permanent stormwater control. Stormwater should not be directed to these facilities until the site has been stabilized. Protect Low Impact Development BMPs from compaction and sedimentation per Element 13. Flow rates around the rest of the site will be controlled by the silt fence that will be placed around the entire site. Will you construct stormwater retention and/or detention facilities? Yes No Will you use permanent infiltration ponds or other low impact development (example: rain gardens, bio-retention, porous pavement) to control flow during construction? Yes No List and describe BMPs: â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection â€¢ BMP C241: Temporary Sediment Pond Installation Schedules: Install BMPs prior to grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 14 2.1.4 Element 4: Install Sediment Controls Stormwater must be filtered prior to being discharged to an infiltration system or leaving the construction site. Sediment control BMPs will be installed as one of the first steps of grading. These BMPs must be functional before other land-disturbing activities, especially grading and filling, take place. A silt fence will be installed around the perimeter of the developed site areas. A temporary sediment pond will be installed at the northwest corner of the site where some sediment will be able to settle out prior to discharge to the public storm system. If sediment controls are ineffective and turbid water is observed discharging from the site, additional energy dissipation BMPs and sediment control BMPs should be installed such as wattles. It may also be necessary to stabilize soils per Element 5 that are not being worked on. List and describe BMPs: â€¢ BMP C233: Silt Fence â€¢ BMP C235: Wattles â€¢ BMP C241: Temporary Sediment Pond Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: Repair sediment controls as needed. Remove sediment from pond as needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 15 2.1.5 Element 5: Stabilize Soils Stabilize exposed and unworked soils by the BMPs listed below to prevent erosion. Protect stockpiles with plastic covering or other approved sediment trapping measures. Stabilize exposed soils with Temporary and Permanent Seeding, Mulching, Sodding, Topsoiling/Compost, or Surface Roughening. Minimize soil compaction by applying gravel base early on areas to be paved. The ESC Supervisor shall be familiar with BMPs for soil stabilization and dust control and implement these BMPs where needed on the proposed site. West of the Cascade Mountains Crest Number of Days Soils Can Season Dates be Left Exposed During the Dry Season May 1 â€“ September 30 7 days During the Wet Season October 1 â€“ April 30 2 days Soils must be stabilized at the end of the shift before a holiday or weekend if needed based on the weather forecast. Anticipated project dates: Start date: August 2019 End date: December 2020 Will you construct during the wet season? Yes No List and describe BMPs: â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C125: Topsoiling/Composting â€¢ BMP C130: Surface Roughening â€¢ BMP C131: Gradient Terraces â€¢ BMP C140: Dust Control Installation Schedules: As needed as soil is exposed. Inspection and Maintenance plan: End of the shift before a holiday or weekend and prior to forecasted rain events. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 16 2.1.6 Element 6: Protect Slopes All cut and fill slopes will be designed, constructed, and protected in a manner that minimizes erosion. The interceptor swale and check dams will be located along the west side of the site as needed. Will steep slopes be present at the site during construction? Yes No (temporary excavations may create brief temporary slopes during wall construction) List and describe BMPs: â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C130: Surface Roughening â€¢ BMP C200: Interceptor Dike and Swale â€¢ BMP C201: Grass-Lined Channels â€¢ BMP C207: Check Dams Installation Schedules: Install BMPs prior to grading and as needed to minimize erosion. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 17 2.1.7 Element 7: Protect Drain Inlets All storm drain inlets and culverts made operable during construction shall be protected to prevent unfiltered or untreated water from entering the drainage conveyance system. However, the first priority is to keep all access roads clean of sediment and keep street wash water separate from entering storm drains until treatment can be provided. Storm Drain Inlet Protection will be implemented for all drainage inlets and culverts that could potentially be impacted by sediment-laden runoff on and near the project site. Inlet protection should be provided as shown on the C2.1 Plan. Inlet protection devices will be cleaned (or removed and replaced), when sediment has filled the device by one third (1/3) or as specified by the manufacturer. List and describe BMPs: â€¢ BMP C220: Storm Drain Inlet Protection Installation Schedules: Before land disturbance for existing catch basins and as new catch basins are made operable. Inspection and Maintenance plan: Inlets will be inspected weekly at a minimum and daily during storm events. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 18 2.1.8 Element 8: Stabilize Channels and Outlets Where site runoff is to be conveyed in channels, or discharged to a stream or some other natural drainage point, efforts will be taken to prevent downstream erosion. The project site is located west of the Cascade Mountain Crest. As such, all temporary on-site conveyance channels shall be designed, constructed, and stabilized to prevent erosion from the expected peak 10 minute velocity of flow from a Type 1A, 10-year, 24-hour recurrence interval storm for the developed condition. Alternatively, the 10-year, 1-hour peak flow rate indicated by an approved continuous runoff simulation model, increased by a factor of 1.6, shall be used. Provide stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes, and downstream reaches, will be installed at the outlets of all conveyance systems. List and describe BMPs: â€¢ BMP C202: Channel Lining â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection Installation Schedules: Install BMPs prior to grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 19 2.1.9 Element 9: Control Pollutants The following pollutants are anticipated to be present on-site: Table 2 â€“ Pollutants Pollutant (List pollutants and source, if applicable) Concrete Concrete process water Concrete slurry Asphalt materials Utility Materials List and describe BMPs: â€¢ BMP C151: Concrete Handling â€¢ BMP C152: Sawcutting and Surfacing Pollution Prevention â€¢ BMP C153: Material Delivery, Storage and Containment Installation Schedules: As needed as pollutant source materials are used on-site. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. Will maintenance, fueling, and/or repair of heavy equipment and vehicles occur on-site? Yes No Will wheel wash or tire bath system BMPs be used during construction? Yes No Will pH-modifying sources be present on-site? Yes No Table 3 â€“ pH-Modifying Sources None Bulk cement Cement kiln dust Fly ash Other cementitious materials New concrete washing or curing waters Waste streams generated from concrete grinding and sawing Exposed aggregate processes 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 20 Dewatering concrete vaults Concrete pumping and mixer washout waters Recycled concrete Recycled concrete stockpiles Other (i.e., calcium lignosulfate) [please describe: ] Concrete trucks must not be washed out onto the ground, or into storm drains, open ditches, streets, or streams. Excess concrete must not be dumped on-site, except in designated concrete washout areas with appropriate BMPs installed. Will uncontaminated water from water-only based shaft drilling for construction of building, road, and bridge foundations be infiltrated provided the wastewater is managed in a way that prohibits discharge to surface waters? Yes No 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 21 2.1.10 Element 10: Control Dewatering Dewatering is not anticipated to be associated with this construction project. Most excavations are intended to occur in the dry seasons above the groundwater table, although several instances of â€œperchedâ€ groundwater were found in the geotechnical test pits. If necessary, only clean, non-turbid dewatering water (such as well-point groundwater) may be discharged to systems tributary to, or directly into, surface waters of the State, provided the dewatering flow does not cause erosion or flooding of receiving waters. Table 4 â€“ Dewatering BMPs Infiltration Transport off-site in a vehicle (vacuum truck for legal disposal) Ecology-approved on-site chemical treatment or other suitable treatment technologies Sanitary or combined sewer discharge with local sewer district approval (last resort) Use of sedimentation bag with discharge to ditch or swale (small volumes of localized dewatering) List and describe BMPs: N/A. Installation Schedules: N/A. Inspection and Maintenance plan: N/A. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 22 2.1.11 Element 11: Maintain BMPs All temporary and permanent Erosion and Sediment Control (ESC) BMPs shall be maintained and repaired as needed to ensure continued performance of their intended function. Maintenance and repair shall be conducted in accordance with each particular BMP specification (see Volume II of the SWMMWW or Chapter 7 of the SWMMEW). Visual monitoring of all BMPs installed at the site will be conducted at least once every calendar week and within 24 hours of any stormwater or non-stormwater discharge from the site. If the site becomes inactive and is temporarily stabilized, the inspection frequency may be reduced to once every calendar month. All temporary ESC BMPs shall be removed within 30 days after final site stabilization is achieved or after the temporary BMPs are no longer needed. Trapped sediment shall be stabilized on-site or removed. Disturbed soil resulting from removal of either BMPs or vegetation shall be permanently stabilized. Additionally, protection must be provided for all BMPs installed for the permanent control of stormwater from sediment and compaction. BMPs that are to remain in place following completion of construction shall be examined and restored to full operating condition. If sediment enters these BMPs during construction, the sediment shall be removed and the facility shall be returned to conditions specified in the construction documents. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 23 2.1.12 Element 12: Manage the Project The project will be managed based on the following principles: â€¢ Projects will be phased to the maximum extent practicable and seasonal work limitations will be taken into account. â€¢ Inspection and monitoring: o Inspection, maintenance and repair of all BMPs will occur as needed to ensure performance of their intended function. o Site inspections and monitoring will be conducted in accordance with Special Condition S4 of the CSWGP. Sampling locations are indicated on the Site Map. Sampling station(s) are located in accordance with applicable requirements of the CSWGP. â€¢ Maintain an updated SWPPP. o The SWPPP will be updated, maintained, and implemented in accordance with Special Conditions S3, S4, and S9 of the CSWGP. As site work progresses the SWPPP will be modified routinely to reflect changing site conditions. The SWPPP will be reviewed monthly to ensure the content is current. Table 5 â€“ Management Design the project to fit the existing topography, soils, and drainage patterns Emphasize erosion control rather than sediment control Minimize the extent and duration of the area exposed Keep runoff velocities low Retain sediment on-site Thoroughly monitor site and maintain all ESC measures Schedule major earthwork during the dry season Other (please describe) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 24 Table 6 â€“ BMP Implementation Schedule In general it is expected that most early grading will occur in the dry season of 2019 and be picked up again in dry season of 2020. Phase of Construction Wet/Dry Stormwater BMPs Date Project Season Pre-construction Preserving Natural Vegetation 8/19/2019 Dry (BMP C101) Pre-construction High Visibility Fence (BMP C103) 8/21/2019 Dry Pre-construction Silt Fence (BMP C233) 8/21/2019 Dry Land disturbance Stabilized Construction 8/23/2019 Dry Entrance/Exit (BMP C105) Land disturbance Sediment Trap (BMP C240) NA Dry Land disturbance Temporary Sediment Pond (BMP 8/26/2019 Dry C241) Land disturbance Temporary and Permanent Throughout Dry Seeding (BMP C120) project as needed Land disturbance Mulching (BMP C121) Throughout Dry project as needed Land disturbance Nets and Blankets (BMP C122) NA Dry Land disturbance Plastic Covering (BMP C123) 10/15/2019 Dry Land disturbance Sodding (BMP C124) Throughout Dry project as needed Land disturbance Topsoiling/Composting (BMP Throughout Dry C125) project as needed Land disturbance Surface Roughening (BMP C130) Throughout Dry project as needed Land disturbance Dust Control (BMP C140) Throughout Dry project as needed Land disturbance Interceptor Dike and Swale (BMP 8/23/2019 Dry C200) Land disturbance Channel Lining (BMP C202) 8/23/2019 Dry Land disturbance Check Dams (BMP C207) 8/23/2019 Dry 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 25 Land disturbance Outlet protection (BMP C209) 8/26/2019 Dry Land disturbance Storm Drain Inlet Protection 8/19/19 Dry (BMP C220) Construction Wattles (BMP C235) NA Dry Construction Concrete handling (BMP C151) NA Dry Construction Sawcutting and Surfacing 4/30/2020 Dry Pollution Prevention (BMP C152) Construction Material Delivery, Storage and 8/26/19 Dry Containment (BMP C153) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 26 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs Gravel Infiltration Trenches (SWMMWW Section 3.3.11) will be the primary means of stormwater mitigation for the roofs and other hard surfaces on this project. The infiltration trenches will need to be protected from compaction during construction. This can be done by placing orange protective fencing around the trenches as they are constructed in order to avoid compaction from vehicle traffic. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 27 3 Pollution Prevention Team Table 7 â€“ Team Information Title Name(s) Phone Number Certified Erosion and Sediment Joshua Taylor 360.629.3078 Control Lead (CESCL) Resident Engineer CG Engineering 425.778.8500 Emergency Ecology Contact Jess Eakens 360.407.6442 Emergency Permittee/ Owner Contact Ryan Kilby 425.750.7926 Non-Emergency Owner Contact Ryan Kilby 425.750.7926 Monitoring Personnel TBD TBD Ecology Regional Office Northwest Regional Office 425.649.7000 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 28 4 Monitoring and Sampling Requirements Monitoring includes visual inspection, sampling for water quality parameters of concern, and documentation of the inspection and sampling findings in a site log book. A site log book will be maintained for all on-site construction activities and will include: â€¢ A record of the implementation of the SWPPP and other permit requirements â€¢ Site inspections â€¢ Stormwater sampling data File a blank form under Appendix D. The site log book must be maintained on-site within reasonable access to the site and be made available upon request to Ecology or the local jurisdiction. Numeric effluent limits may be required for certain discharges to 303(d) listed waterbodies. See CSWGP Special Condition S8 and Section 5 of this template. 4.1 Site Inspection Site inspections will be conducted at least once every calendar week and within 24 hours following any discharge from the site. For sites that are temporarily stabilized and inactive, the required frequency is reduced to once per calendar month. The discharge point(s) are indicated on the Site Map (see Appendix A) and in accordance with the applicable requirements of the CSWGP. 4.2 Stormwater Quality Sampling 4.2.1 Turbidity Sampling Requirements include calibrated turbidity meter or transparency tube to sample site discharges for compliance with the CSWGP. Sampling will be conducted at all discharge points at least once per calendar week. Method for sampling turbidity: Table 8 â€“ Turbidity Sampling Method Turbidity Meter/Turbidimeter (required for disturbances 5 acres or greater in size) Transparency Tube (option for disturbances less than 1 acre and up to 5 acres in size) The benchmark for turbidity value is 25 nephelometric turbidity units (NTU) and a transparency less than 33 centimeters. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 29 If the dischargeâ€™s turbidity is 26 to 249 NTU or the transparency is less than 33 cm but equal to or greater than 6 cm, the following steps will be conducted: 1. Review the SWPPP for compliance with Special Condition S9. Make appropriate revisions within 7 days of the date the discharge exceeded the benchmark. 2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 10 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period. 3. Document BMP implementation and maintenance in the site log book. If the turbidity exceeds 250 NTU or the transparency is 6 cm or less at any time, the following steps will be conducted: 1. Telephone or submit an electronic report to the applicable Ecology Regionâ€™s Environmental Report Tracking System (ERTS) within 24 hours. â€¢ Central Region (Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, Yakima): (509) 575-2490 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/CRO_nerts_online.html â€¢ Eastern Region (Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, Whitman): (509) 329-3400 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/ERO_nerts_online.html â€¢ Northwest Region (King, Kitsap, Island, San Juan, Skagit, Snohomish, Whatcom): (425) 649-7000 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/NWRO_nerts_online.html â€¢ Southwest Region (Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, Wahkiakum,): (360) 407-6300 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/SWRO_nerts_online.html 2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 10 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period 3. Document BMP implementation and maintenance in the site log book. 4. Continue to sample discharges daily until one of the following is true: â€¢ Turbidity is 25 NTU (or lower). â€¢ Transparency is 33 cm (or greater). â€¢ Compliance with the water quality limit for turbidity is achieved. o 1 - 5 NTU over background turbidity, if background is less than 50 NTU o 1% - 10% over background turbidity, if background is 50 NTU or greater â€¢ The discharge stops or is eliminated. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 30 4.2.2 pH Sampling pH monitoring is required for â€œSignificant concrete workâ€ (i.e., greater than 1000 cubic yards poured concrete over the life of the project). The use of recycled concrete or engineered soils (soil amendments including but not limited to Portland cement-treated base [CTB], cement kiln dust [CKD] or fly ash) also requires pH monitoring. For significant concrete work, pH sampling will start the first day concrete is poured and continue until it is cured, typically three (3) weeks after the last pour. For engineered soils and recycled concrete, pH sampling begins when engineered soils or recycled concrete are first exposed to precipitation and continues until the area is fully stabilized. If the measured pH is 8.5 or greater, the following measures will be taken: 1. Prevent high pH water from entering storm sewer systems or surface water. 2. Adjust or neutralize the high pH water to the range of 6.5 to 8.5 su using appropriate technology such as carbon dioxide (CO2) sparging (liquid or dry ice). 3. Written approval will be obtained from Ecology prior to the use of chemical treatment other than CO2 sparging or dry ice. Method for sampling pH: Table 9 â€“ pH Sampling Method pH meter pH test kit Wide range pH indicator paper 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 31 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies 5.1 303(d) Listed Waterbodies Is the receiving water 303(d) (Category 5) listed for turbidity, fine sediment, phosphorus, or pH? Yes No List the impairment(s): N/A 5.2 TMDL Waterbodies Waste Load Allocation for CSWGP discharges: N/A List and describe BMPs: N/A Discharges to TMDL receiving waterbodies will meet in-stream water quality criteria at the point of discharge. The Construction Stormwater General Permit Proposed New Discharge to an Impaired Water Body form is included in Appendix F. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 32 6 Reporting and Record Keeping 6.1 Record Keeping 6.1.1 Site Log Book A site log book will be maintained for all on-site construction activities and will include: â€¢ A record of the implementation of the SWPPP and other permit requirements â€¢ Site inspections â€¢ Sample logs 6.1.2 Records Retention Records will be retained during the life of the project and for a minimum of three (3) years following the termination of permit coverage in accordance with Special Condition S5.C of the CSWGP. Permit documentation to be retained on-site: â€¢ CSWGP â€¢ Permit Coverage Letter â€¢ SWPPP â€¢ Site Log Book Permit documentation will be provided within 14 days of receipt of a written request from Ecology. A copy of the SWPPP or access to the SWPPP will be provided to the public when requested in writing in accordance with Special Condition S5.G.2.b of the CSWGP. 6.1.3 Updating the SWPPP The SWPPP will be modified if: â€¢ Found ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. â€¢ There is a change in design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the State. The SWPPP will be modified within seven (7) days if inspection(s) or investigation(s) determine additional or modified BMPs are necessary for compliance. An updated timeline for BMP implementation will be prepared. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 33 6.2 Reporting 6.2.1 Discharge Monitoring Reports Cumulative soil disturbance is one (1) acre or larger; therefore, Discharge Monitoring Reports (DMRs) will be submitted to Ecology monthly. If there was no discharge during a given monitoring period the DMR will be submitted as required, reporting â€œNo Dischargeâ€. The DMR due date is fifteen (15) days following the end of each calendar month. DMRs will be reported online through Ecologyâ€™s WQWebDMR System. 6.2.2 Notification of Noncompliance If any of the terms and conditions of the permit is not met, and the resulting noncompliance may cause a threat to human health or the environment, the following actions will be taken: 1. Ecology will be notified within 24-hours of the failure to comply by calling the applicable Regional office ERTS phone number (Regional office numbers listed below). 2. Immediate action will be taken to prevent the discharge/pollution or otherwise stop or correct the noncompliance. If applicable, sampling and analysis of any noncompliance will be repeated immediately and the results submitted to Ecology within five (5) days of becoming aware of the violation. 3. A detailed written report describing the noncompliance will be submitted to Ecology within five (5) days, unless requested earlier by Ecology. Anytime turbidity sampling indicates turbidity is 250 NTUs or greater, or water transparency is 6 cm or less, the Ecology Regional office will be notified by phone within 24 hours of analysis as required by Special Condition S5.A of the CSWGP. â€¢ Central Region at (509) 575-2490 for Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, or Yakima County â€¢ Eastern Region at (509) 329-3400 for Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, or Whitman County â€¢ Northwest Region at (425) 649-7000 for Island, King, Kitsap, San Juan, Skagit, Snohomish, or Whatcom County â€¢ Southwest Region at (360) 407-6300 for Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, or Wahkiakum 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 34 Include the following information: 1. Your name and / Phone number 2. Permit number 3. City / County of project 4. Sample results 5. Date / Time of call 6. Date / Time of sample 7. Project name In accordance with Special Condition S4.D.5.b of the CSWGP, the Ecology Regional office will be notified if chemical treatment other than CO2 sparging is planned for adjustment of high pH water. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 35 Appendix/Glossary A. Site Map Figure A-1. Site map. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 36 B. BMP Detail BMP details are shown on the approved TESC plan. Additional/alternative BMPs are listed below and available for download from the Ecology Construction Stormwater website: http://www.ecy.wa.gov/programs/wq/stormwater/construction/index.html Element #1 - Mark Clearing Limits â€¢ BMP C101: Preserving Natural Vegetation â€¢ BMP C102: Buffer Zones â€¢ BMP C103: High Visibility Plastic or Metal Fence â€¢ BMP C233: Silt Fence Element #2 - Establish Construction Access â€¢ BMP C105: Stabilized Construction Entrance/Exit â€¢ BMP C107: Construction Road/Parking Area Stabilization Element #3 - Control Flow Rates â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection â€¢ BMP C241: Temporary Sediment Pond Element #4 - Install Sediment Controls â€¢ BMP C233: Silt Fence â€¢ BMP C235: Wattles â€¢ BMP C241: Temporary Sediment Pond Element #5 - Stabilize Soils â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C125: Topsoiling/Composting â€¢ BMP C130: Surface Roughening â€¢ BMP C131: Gradient Terraces â€¢ BMP C140: Dust Control Element #6 - Protect Slopes â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C130: Surface Roughening â€¢ BMP C200: Interceptor Dike and Swale â€¢ BMP C201: Grass-Lined Channels â€¢ BMP C207: Check Dams Element #7 - Protect Drain Inlets â€¢ BMP C220: Storm Drain Inlet Protection 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 37 Element #8 - Stabilize Channels and Outlets â€¢ BMP C202: Channel Lining â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection Element #9 â€“ Control Pollutants â€¢ BMP C151: Concrete Handling â€¢ BMP C152: Sawcutting and Surfacing Pollution Prevention â€¢ BMP C153: Material Delivery, Storage and Containment â€¢ See Volume IV â€“ Source Control BMPs Element #10 - Control Dewatering NA Element #11: Maintain BMPs â€¢ BMP C150: Materials On Hand â€¢ BMP C160: Certified Erosion and Sediment Control Lead Element #12: Manage the Project â€¢ BMP C150: Materials On Hand â€¢ BMP C160: Certified Erosion and Sediment Control Lead â€¢ BMP C162: Scheduling Element #13: Protect LID BMPs â€¢ BMP C103: High Visibility Fence 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 38 C. Correspondence 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 39 D. Site Inspection Form Permit # Inspection Time Project Date Name Name of Certified Erosion Sediment Control Lead (CESCL) or qualified inspector if less than one acre Print Name: Approximate rainfall amount since the last inspection (in inches): Approximate rainfall amount in the last 24 hours (in inches): Current Weather Clear Cloudy Mist Rain Wind Fog A. Type of inspection: Weekly Post Storm Event Other B. Phase of Active Construction (check all that apply): Pre Construction/installation of Clearing/Demo/Grading Infrastructure/storm/roads erosion/sediment controls Concrete pours Vertical Utilities Construction/buildings Offsite improvements Site temporary stabilized Final stabilization C. Questions: 1. Were all areas of construction and discharge points inspected? Yes No 2. Did you observe the presence of suspended sediment, turbidity, discoloration, Yes No or oil sheen 3. Was a water quality sample taken during inspection? (refer to permit Yes No conditions S4 & S5) 4. Was there a turbid discharge 250 NTU or greater, or Transparency 6 cm or Yes No less?* 5. If yes to #4 was it reported to Ecology? Yes No 6. Is pH sampling required? pH range required is 6.5 to 8.5. Yes No 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 40 If answering yes to a discharge, describe the event. Include when, where, and why it happened; what action was taken, and when. *If answering yes to # 4 record NTU/Transparency with continual sampling daily until turbidity is 25 NTU or less/ transparency is 33 cm or greater. Sampling Date: Results: Parameter Method (circle one) Result Other/Note NTU cm pH Turbidity tube, meter, laboratory pH Paper, kit, meter D. Check the observed status of all items. Provide â€œAction Required â€œdetails and dates. Element # Inspection BMPs BMP BMP Action Inspected needs failed required yes no n/a maintena (describe nce in section F) 1 Before beginning land disturbing Clearing activities are all clearing limits, Limits natural resource areas (streams, wetlands, buffers, trees) protected with barriers or similar BMPs? (high visibility recommended) 2 Construction access is stabilized Construction with quarry spalls or equivalent Access BMP to prevent sediment from being tracked onto roads? Sediment tracked onto the road way was cleaned thoroughly at the end of the day or more frequent as necessary. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 41 3 Are flow control measures Control Flow installed to control stormwater Rates volumes and velocity during construction and do they protect downstream properties and waterways from erosion? If permanent infiltration ponds are used for flow control during construction, are they protected from siltation? 4 All perimeter sediment controls Sediment (e.g. silt fence, wattles, compost Controls socks, berms, etc.) installed, and maintained in accordance with the Stormwater Pollution Prevention Plan (SWPPP). Sediment control BMPs (sediment ponds, traps, filters etc.) have been constructed and functional as the first step of grading. Stormwater runoff from disturbed areas is directed to sediment removal BMP. 5 Have exposed un-worked soils Stabilize Soils been stabilized with effective BMP to prevent erosion and sediment deposition? Are stockpiles stabilized from erosion, protected with sediment trapping measures and located away from drain inlet, waterways, and drainage channels? Have soils been stabilized at the end of the shift, before a holiday or weekend if needed based on the weather forecast? Has stormwater and ground water 6 been diverted away from slopes and Protect Slopes disturbed areas with interceptor dikes, pipes and or swales? 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 42 Is off-site storm water managed separately from stormwater generated on the site? Is excavated material placed on uphill side of trenches consistent with safety and space considerations? Have check dams been placed at regular intervals within constructed channels that are cut down a slope? 7 Storm drain inlets made operable Drain Inlets during construction are protected. Are existing storm drains within the influence of the project protected? 8 Have all on-site conveyance channels Stabilize been designed, constructed and Channel and stabilized to prevent erosion from Outlets expected peak flows? Is stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes and downstream conveyance systems? 9 Are waste materials and demolition Control debris handled and disposed of to Pollutants prevent contamination of stormwater? Has cover been provided for all chemicals, liquid products, petroleum products, and other material? Has secondary containment been provided capable of containing 110% of the volume? Were contaminated surfaces cleaned immediately after a spill incident? Were BMPs used to prevent contamination of stormwater by a pH modifying sources? Wheel wash wastewater is handled and disposed of properly. 10 Concrete washout in designated Control areas. No washout or excess concrete Dewatering on the ground. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 43 Dewatering has been done to an approved source and in compliance with the SWPPP. Were there any clean non turbid dewatering discharges? 11 Are all temporary and permanent Maintain BMP erosion and sediment control BMPs maintained to perform as intended? 12 Has the project been phased to the Manage the maximum degree practicable? Project Has regular inspection, monitoring and maintenance been performed as required by the permit? Has the SWPPP been updated, implemented and records maintained? 13 Is all Bioretention and Rain Garden Protect LID Facilities protected from sedimentation with appropriate BMPs? Is the Bioretention and Rain Garden protected against over compaction of construction equipment and foot traffic to retain its infiltration capabilities? Permeable pavements are clean and free of sediment and sediment laden- water runoff. Muddy construction equipment has not been on the base material or pavement. Have soiled permeable pavements been cleaned of sediments and pass infiltration test as required by stormwater manual methodology? Heavy equipment has been kept off existing soils under LID facilities to retain infiltration rate. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 44 E. Check all areas that have been inspected. All in place All disturbed All concrete wash out All material storage BMPs soils area areas All discharge All equipment storage All construction locations areas entrances/exits F. Elements checked â€œAction Requiredâ€ (section D) describe corrective action to be taken. List the element number; be specific on location and work needed. Document, initial, and date when the corrective action has been completed and inspected. Element Description and Location Action Required Completion Initials # Date Attach additional page if needed Sign the following certification: â€œI certify that this report is true, accurate, and complete, to the best of my knowledge and beliefâ€ Inspected by: (Signature) Date: (print) Title/Qualification of Inspector: 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 45 E. Construction Stormwater General Permit (CSWGP) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 46 F. 303(d) List Waterbodies / TMDL Waterbodies Information 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 47 G. Contaminated Site Information 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section V, Page 48 H. Engineering Calculations 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section VI, Page 1 Section VI â€“ Special Reports and/or Studies Section VI Summary Narrative The following reports are included in this section: 1. Geotechnical Engineering Report by Geotest, dated May 17, 2019. 2. Wetlands Delineation and Fish and Wildlife Habitat Report and Buffer Enhancement Plan by Soundview Consultants dated February 10, 2019. 3. As Built Drawings from Edgecomb Creek Rerouting 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com WETLAND DELINEATION AND FISH AND WILDLIFE HABITAT ASSESSMENT REPORT AND BUFFER ENHANCEMENT PLAN CENTENNIAL PARK JUNE 2019 WETLAND DELINEATION AND FISH AND WILDLIFE HABITAT ASSESSMENT REPORT AND BUFFER ENHANCEMENT PLAN CENTENNIAL PARK JUNE 28, 2019 PROJECT LOCATION 67TH AVE NE & 172ND ST NE/HWY 531 ARLINGTON, WASHINGTON 98030 PREPARED FOR WILLIAMS INVESTMENTS 2517 COLBY AVENUE, EVERETT, WASHINGTON 98201 PREPARED BY SOUNDVIEW CONSULTANTS LLC 2907 HARBORVIEW DRIVE, SUITE D GIG HARBOR, WASHINGTON 98335 (253) 514-8952 Executive Summary Soundview Consultants LLC (SVC) is assisting Williams Investments (Applicant) with a Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan for a proposed multi-family residential and retail commercial development of an 8.81-acre site located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington. The subject property consists of one parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). SVC investigated the subject property for the presence of potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species in the fall of 2018 and winter of 2019. Using current methodology, the site assessment identified one potentially-regulated wetland (Wetland A) and one relict stream channel (Edgecomb Creek) on the subject property and one newly relocated stream (Edgecomb Creek) offsite to the south within 225 feet of the site. Wetland A is considered a Category IV wetland with a standard 40-foot buffer based on the low habitat score per Arlington Municipal Code (AMC) 20.93.830(b). Edgecomb Creek was previously located onsite but was successfully relocated offsite as part of a Washington State Department of Transportation (WSDOT) restoration project. The relict stream channel remains onsite, and the Applicant is seeking to declassify it from being considered a stream as this relict channel no longer meets the stream definition criteria as described in the Washington Administrative Code (WAC) 222-16-030. A technical memorandum regarding this stream declassification request and a water type modification form has been submitted to the Washington Department of Natural Resources (DNR) under separate cover (SVC, 2019). The relict channel was previously utilized by salmonid species and therefore is considered Fish and Wildlife Habitat Conservation Area (FHWCA) under AMC 20.93.400. SVC is currently completing a bed gradient study to determine if the channel continues to qualify as a FWHCA and should be deregulated. However, until it is formally declassified and deregulated, it is subject to a 100-foot native growth protection easement and additional 50-foot management zone per AMC 20.93.440(a). The newly relocated Edgecomb Creek offsite to the south is considered a Type F-ESA water with an associated 150-foot buffer per AMC Table 20.93-3. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species were identified within 225 feet of the subject property. The Applicant proposes a phased mixed land use development consisting of multi-family residential units and commercial retail space with associated infrastructure to provide additional housing and commercial space within the City of Arlington. This report addresses Phase 1 of the development, which proposes approximately 152 residential units and approximately 8,000 square feet of retail area with associated parking, a recreational park, garden and open space. Both the park and open space meet the City of Arlingtonâ€™s requirements, and these areas will be vegetated with appropriate plant species. Phase 2 proposes an additional 36 residential units and associated parking spaces and is contingent upon the declassification and deregulation of the relict Edgecomb Creek channel present on the southern portion of the site. The project was carefully designed in order to avoid and minimize impacts to critical areas to the greatest extent feasible, and no direct or indirect wetland impacts are proposed. However, Phase 2 of the project will require the unavoidable fill of the relict stream channel. 1778.0001 Centennial Park i Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Size Category/ Regulated Under Regulated Under Regulated Under Wetland Name Onsite Type1 AMC Chapter 20.93 RCW 90.48 Clean Water Act ~ 21,823 Wetland A IV Yes Yes Yes SF Relict Edgecomb N/A N/A Yes2 Yes2 Potentially Creek Channel Relocated Edgecomb Type Offsite Yes Yes Yes Creek F/ESA 1. Washington State Department of Ecology (WSDOE) wetland rating system (Hruby, 2014) per AMC 20.93.730 and AMC 20.93.800. 2. The relict channel is regulated by the local and state jurisdiction until appropriate documentation has been submitted to support its deregulation. 1778.0001 Centennial Park ii Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table of Contents Chapter 1. Introduction ................................................................................................................................... 1 Chapter 2. Proposed Project ........................................................................................................................... 2 2.1 Location ................................................................................................................................................... 2 2.2 Proposed Project .................................................................................................................................... 2 Chapter 3. Methods .......................................................................................................................................... 4 Chapter 4. Background .................................................................................................................................... 5 4.1 Landscape Setting ................................................................................................................................... 5 4.2 Vegetation ................................................................................................................................................ 5 4.3 Soils .......................................................................................................................................................... 6 4.4 Stream and Wetland Inventories .......................................................................................................... 6 4.5 Priority Habitats and Species ................................................................................................................ 6 4.6 Precipitation ............................................................................................................................................ 6 Chapter 5. Results ............................................................................................................................................. 8 5.1 Wetlands .................................................................................................................................................. 8 5.2 Relict Edgecomb Creek Channel ....................................................................................................... 10 5.3 Artificial Drainage Ditches ................................................................................................................. 11 5.4 Offsite Improvements ......................................................................................................................... 12 5.5 Previously Identified Features ............................................................................................................ 13 Chapter 6. Regulatory Considerations ......................................................................................................... 15 6.1 Local Critical Areas Requirements ..................................................................................................... 15 6.2 State and Federal Considerations ....................................................................................................... 17 Chapter 7. Buffer Enhancement Plan .......................................................................................................... 20 7.1 Purpose and Need ................................................................................................................................ 20 7.2 Description of Impacts and Mitigation Strategy .............................................................................. 20 7.3 Approach and Best Management Practices ...................................................................................... 21 7.4 Goals, Objectives, and Performance Standards ............................................................................... 21 7.5 Plant Materials and Installation .......................................................................................................... 22 7.6 Maintenance & Monitoring Plan ........................................................................................................ 24 7.7 Reporting ............................................................................................................................................... 24 7.8 Contingency Plan ................................................................................................................................. 24 Chapter 8. Closure .......................................................................................................................................... 26 Chapter 9. References .................................................................................................................................... 27 Figures Figure 1. Vicinity Map. ................................................................................................................ 2 Figure 2. Aerial Image of the Subject Property. ........................................................................... 5 Tables Table 1. Precipitation Summary1. ................................................................................................. 7 Table 2. Wetland Summary .......................................................................................................... 8 Table 3. Wetland A Summary. ..................................................................................................... 9 Table 4. Precipitation Summary1. ............................................................................................... 13 1778.0001 Centennial Park iii Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table 5. Measures to Minimize Impacts to Wetlands .................................................................. 15 Appendices Appendix A â€” Methods and Tools Appendix B â€” Background Information Appendix C â€” Site Plans Appendix D â€” Data Forms Appendix E â€” Wetland Rating Forms Appendix F â€” Wetland Rating Maps Appendix G â€” Edgecomb Creek Relocation Documentation Appendix H â€” Qualifications 1778.0001 Centennial Park iv Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 1. Introduction Soundview Consultants LLC (SVC) is assisting Williams Investments (Applicant) with a Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan for a proposed multi-family residential and retail commercial development of an 8.81-acre site located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington. The subject property consists of one parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). The purpose of this Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan is to identify the presence of potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species that may be found on or near the subject property and to assess potential impacts to any such critical areas and/or species from the proposed project. The WSDOT recently completed a stream restoration project for Edgecomb Creek, which was previously located on the subject property; the stream has since been relocated offsite and associated offsite mitigation has already occurred for these impacts. This report provides conclusions and recommendations regarding: â€¢ Site description and areas of assessment; â€¢ Background research, identification, and assessment of potentially-regulated wetlands and fish and wildlife habitat and/or species in the vicinity of the proposed project; â€¢ Standard buffer recommendations, building setbacks, and development limitations; â€¢ Existing site map detailing identified critical areas; â€¢ Federal regulatory Considerations; â€¢ Proposed site plan with proposed project details; and â€¢ Supplemental information necessary for local, state, and federal regulatory review. 1778.0001 Centennial Park 1 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 2. Proposed Project 2.1 Location The subject property is located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington (Figure 1). The subject property consists of one tax parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). To access the subject property from I-5 North take Exit 206 for WA-531E/172nd Street Northeast/Edgecomb Road toward Lakewood/Smokey Point. Continue for approximately 2.3 miles, where the subject property will be on the left at the intersection of 172nd Street Northeast and 67th Avenue Northeast. Figure 1. Vicinity Map. Subject Property Location 2.2 Proposed Project The Applicant proposes a phased mixed land use development consisting of multi-family residential units and commercial retail space with associated infrastructure to provide additional housing and commercial space within the City of Arlington. This report addresses Phase 1 of the development, which proposes approximately 152 residential units and approximately 8,000-square feet of retail area with associated parking, a recreational park, garden and open space. Both the park and open space meet the City of Arlingtonâ€™s requirements, and these areas will be vegetated with appropriate plant species. Phase 2 proposes an additional 36 residential units and associated parking spaces. The project was carefully designed in order to avoid and minimize impacts to critical areas to the greatest extent 1778.0001 Centennial Park 2 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 feasible, and no direct or indirect wetland impacts are proposed; however, Phase 2 of the project will require the unavoidable fill of the relict stream channel. Phase 2 of the proposed project is contingent on the declassification and deregulation of a relict stream (relict Edgecomb Creek channel) that has been successfully relocated offsite to the south by a WSDOT fish passage barrier culvert removal project. Additional information regarding the relict stream channel and its proposed declassification is provided in Section 5.2 of this report. SVC is currently gathering data and completing an analysis of the relict stream bed to determine if this portion of channel provides off-channel habitat for listed salmonids or if no habitat exists to support deregulating the area as an Fish and Wildlife Conservation Area (FHWCA). Phase 2 development proposes to fill the relict stream channel. The existing wetland (Wetland A) will not be directly impacted by the proposed development during Phase 1 or 2 of the proposed work, and minor work within the outer 25 percent of the buffer is proposed for the recreational path, as allowed per AMC 20.93.820.1.3(A). 1778.0001 Centennial Park 3 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 3. Methods SVC investigated, assessed, and delineated any potentially-regulated wetlands, waterbodies, and other fish and wildlife habitat on and within 225 feet of the subject property in October and November 2018. All determinations were made using observable vegetation, hydrology, and soils in conjunction with data from the U.S. Geological Survey (USGS) topographic maps, the Natural Resource Conservation Service (NRCS) soil survey, U.S. Fish and Wildlife Service (USFWS) National Wetland Inventory (NWI), Washington Department of Fish and Wildlife (WDFW) Priority Habitats and Species (PHS) and SalmonScape mapping tools, Department of Natural Resources (DNR) water typing system, Snohomish Countyâ€™s public geographic information systems (GIS), local precipitation data, and various orthophotographic resources. Appendix A contains further details for the methods and tools used to prepare this report. Wetland boundaries were determined in accordance with AMC 20.93.810, and as outlined in the U.S. Army Corps of Engineersâ€™ (USACE) Wetlands Delineation Manual (Environmental Laboratory, 1987) as modified according to the guidelines established in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, Version 2.0 (USACE, 2010) and Field Indicators of Hydric Soils in the United States (USDA, 2018). Qualified wetland scientists marked boundaries of the onsite wetland with orange surveyorâ€™s flagging labeled alpha-numerically and tied to 3-foot lath or vegetation along the wetland boundary. Pink surveyorâ€™s flagging was labeled alpha- numerically and tied to 3-foot lath or vegetation at formal sampling locations to mark the points where detailed data was collected (DP-1 to DP-11). Additional tests pits were excavated at regular intervals inside and outside of the wetland boundary to further confirm the delineation. SVC classified all wetlands using both the hydrogeomorphic (Brinson, 1993) and Cowardin (Cowardin, 1979; Federal Geographic Data Committee, 2013) classification systems. Following classification and assessment, all wetlands were rated and categorized using the Washington State Wetlands Rating System for Western Washington (Hruby, 2014) and the definitions established in AMC 20.93.800(a). The fish and wildlife habitat assessment was conducted during the same site visits by qualified fish and wildlife biologists. The experienced biologists made visual observations using stationary and walking survey methods for both aquatic and upland habitats noting any special habitat features or signs of fish and wildlife activity. 1778.0001 Centennial Park 4 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 4. Background 4.1 Landscape Setting The subject property is located in the City of Arlington in a mixed-use setting and is currently undeveloped (Figure 2). The subject property abuts 67th Avenue Northeast to the west with commercial properties beyond; 172nd Street Northeast/Highway 531 to the south; a church to the west; and single-family residential and undeveloped forested areas to the north. Topography on the eastern portion of the site slopes down approximately 20 feet to the center, and then remains flat at approximately 140 feet above mean sea level to the western property boundary (Appendix B1). The study area is within the Snohomish River Watershed (Water Resources Inventory Area 7). Figure 2. Aerial Image of the Subject Property. Subject Property Location 4.2 Vegetation Vegetation on the subject property is dominated by upland grasses and forbs throughout the majority of the site, including orchard grass (Dactylis glomerata), colonial bentgrass (Agrostis capillaris), narrowleaf plantain (Plantago lanceolata), and common velvetgrass (Holcus lanatus). Forested cover is present through the center and southern site boundary following the relict stream channel. Dominant forest vegetation includes western red cedar (Thuja plicata), Douglas fir (Pseudotsuga menziesii), and red alder (Alnus rubra) with an understory of red-osier dogwood (Cornus alba), salmonberry (Rubus spectabilis), salal (Gaultheria shallon), and western swordfern (Polystichum munitum). 1778.0001 Centennial Park 5 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 4.3 Soils The NRCS soil survey identifies two soil series on the subject property: Everett gravelly sandy loam, 8 to 15 percent slopes, and Norma loam. An NRCS soil survey map is provided in Appendix B3. A description of the soil profiles is below. Everett gravelly sandy loam, 8 to 15 percent slopes (18) According to the NRCS survey, Everett gravelly sandy loam, 8 to 15 percent slopes, is a somewhat excessively drained soil formed in glacial outwash. Permeability is rapid, and water capacity is low. In a typical profile, the surface layer is dark brown very gravelly sandy loam about 12 inches thick. The upper part of the subsoil is brown very gravelly loamy sand about 5 inches thick. The lower part of the subsoil is a dark brown extremely gravelly sand to a depth of 60 inches of more. The subsoil is cemented in some locations. This soil is listed as non-hydric by NRCS. Norma loam (39) According to the NRCS survey, Norma loam is a deep, poorly drained soil formed in alluvium. In a typical profile, the surface layer is very dark gray loam about 10 inches thick. The subsoil is dark grayish brown sandy loam about 18 inches thick. The substratum is a dark gray sandy loam to a depth of 60 inches or more. This soil is listed as hydric by NRCS. 4.4 Stream and Wetland Inventories The USFWS NWI map (Appendix B2) identifies a potential riverine intermittent streambed seasonally flooded (R4SBC) watercourse along the southern property boundary in the same vicinity as the mapped DNR stream. The NWI also identifies a potential emergent wetland in the northeast corner of the site. The Snohomish County wetland and stream inventory (Appendix B4) identifies a stream (Edgecomb Creek) along the southern parcel boundary (DNR and WDFW refer to this stream as Middle Fork Quilceda Creek). The DNR stream typing map (Appendix B7) identifies Middle Fork Quilceda Creek, a Type F (fish-bearing) stream, running west to east along the southern property boundary. No other potentially-regulated streams or wetlands are documented within 225 feet of the subject property. 4.5 Priority Habitats and Species The WDFW PHS map (Appendix B4) identifies the potential presence of coho, Dolly Varden/bull trout, and fall chum in Middle Fork Quilceda Creek along the southern portion of the subject property. The WDFW Salmonscape map (Appendix B6) lists the documented presence of coho and chum salmon; modeled presence of chinook salmon, pink salmon, and winter steelhead trout; and presumed presence of Dolly Varden/bull trout in the stream along the southern portion of the subject property. No other priority habitats or species are documented within 225 feet of the subject property. 4.6 Precipitation Precipitation data was obtained from the National Oceanic and Atmospheric Administration (NOAA) weather station at Seattle-Tacoma Airport in order to acquire precipitation values during and preceding the field investigation. A summary of data collected is provided in Table 1. 1778.0001 Centennial Park 6 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table 1. Precipitation Summary1. Percent of Day 1 Week 2 Weeks Last 30 days Year-to-Date2 Date Day Of Before Prior Prior (Observed/Normal) (Observed/Normal) Normal (month/year) 10/12/18 0.00 0.00 0.78 1.15 1.91/2.01 1.09/0.97 95/112 11/4/18 0.03 0.18 1.23 3.24 4.02/3.98 4.33/4.26 101/102 5/7/19 0.00 0.00 0.00 0.14 2.86/2.53 28.63/31.36 113/91 Notes: 1. Precipitation level provided in inches. Data obtained from the NOAA (http://w2.weather.gov/climate/xmacis.php?wfo=sew) for Seattle- Tacoma airport. 2. Year-to-date precipitation is the total for the water year from October 1st to the onsite date(s). Precipitation levels during all the site visits were within the statistical normal range. The first site visit was conducted in the beginning of the water year and shows that the precipitation levels were 112 percent of normal at that time for the water year and within statistical normal for the previous 30 days (95 percent of normal). Precipitation levels during the second site visit were also noted to be within the statistical normal range; however, significant rainfall was recorded (3.24 inches) in the two weeks leading up to the site investigation during the November site visit, and over 1 inch was recorded in the week prior. Precipitation levels were also within statistical normal for the water year (91 percent of normal) and for the previous 30 days (113 percent of normal) during the May site visit, at the end of the water year. Such conditions were considered in making professional wetland boundary determinations. 1778.0001 Centennial Park 7 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 5. Results The October 2018 site investigation identified one potentially-regulated wetland (Wetland A) and one relict stream channel (Edgecomb Creek) on the subject property and one newly relocated stream (Edgecomb Creek) offsite to the south within 225 feet of the site. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, or priority species were identified in the vicinity of the subject property. 5.1 Wetlands The identified wetland contained indicators of wetland hydrology, hydric soils, and a predominance of hydrophytic vegetation according to current wetland delineation methodology. A map depicting the location and sizes of the wetland is presented in Appendix C. Data forms are provided in Appendix D, wetland rating forms are provided in Appendix E, and wetland rating maps are provided in Appendix F. Table 2 below summarizes the wetland identified during the site investigation. Table 2. Wetland Summary Predominant Wetland Classification / Rating Wetland Standard Wetland City of Size Onsite Buffer Width Cowardin1 HGM2 WSDOE3 4 (feet)5 Arlington (SF) A PSS/EMBC Depressional IV IV ~21,823 40 Notes: 1. Cowardin et al. (1979), Federal Geographic Data Committee (2013), or NWI Class based on vegetation: PSS = Palustrine Scrub Shrub, PEM = Palustrine Emergent; Modifiers for Water Regime: B = Seasonally Saturated, C = Seasonally Flooded. 2. Brinson, M. M. (1993). 3. Current WSDOE rating (Hruby, 2014). 4. AMC 20.93.800 wetland classification Arlington rating according to Washington State Wetland Rating System for Western Washington (Hruby, 2014). 5. AMC 20.93.830(b) standard buffer widths. Wetland A Wetland A is approximately 21,823 square feet (0.50 acre) in size and is located on the northern portion of the subject property, extending a little offsite to the north. Hydrology for Wetland A is provided by a seasonally-high water table, direct precipitation, surface runoff from adjacent uplands, and flow from a ditch that runs south to north through the wetland. Wetland vegetation is dominated by red alder saplings (Alnus rubra), salmonberry (Rubus spectabilis), and non-native invasive reed canarygrass (Phalaris arundinacea). Wetland A is a Palustrine Scrub Shrub/Emergent, Seasonally Saturated, and Seasonally Flooded wetland (PSS/EMBC). Per AMC 20.93.800, Wetland A is considered a Category IV depressional wetland. Table 3 provides a summary of Wetland A. 1778.0001 Centennial Park 8 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table 3. Wetland A Summary. WETLAND A â€“ INFORMATION SUMMARY Location: Wetland A is located on the northern portion of the subject property, extending a little offsite to the north. Local Jurisdiction City of Arlington WRIA 7 â€“ Snohomish River WSDOE Rating IV (Hruby, 2014) City of Arlington IV Rating City of Arlington 40 feet Buffer Width Wetland Size ~ 21,823 SF Cowardin PSS/EMBC Classification HGM Classification Depressional Wetland Data Sheet(s) DP-4 Upland Data Sheet (s) DP-5 Boundary Flag color Orange Dominant Wetland vegetation is dominated by red alder saplings, salmonberry, and non-native Vegetation invasive reed canarygrass. Soils Hydric soil indicator A4 (Hydrogen Sulfide) was observed. Hydrology is likely provided by a seasonally-high water table, direct precipitation, Hydrology surface runoff from adjacent uplands, and flow from a ditch that runs south to north through the wetland. Rationale for Wetland boundaries were determined by a transition to hydric soils. Delineation Rationale for Local rating is based upon WSDOEâ€™s current rating system per AMC 20.93.800(a). Local Rating Wetland Functions Summary Wetland A provides moderate water quality functions. The wetland retains water seasonally and can provide some pollutant filtration as dense, herbaceous plants cover at Water Quality least half the area. This ability to provide pollutant filtration is valuable as the unit is in a sub-basin where water quality is an issue and TMDLs are in place. Wetland A scores 6 out of 9 points for water quality functions. Wetland A provides low hydrologic functions due to its small size, relative position within Hydrologic the sub-basin, and minimal cover of dense, rigid plants that would help slow surface flows. Wetland A scores 3 out of 9 points for hydrologic functions. Wetland A scores low for habitat functions due to lack of priority habitats, location within Habitat a high intensity land use landscape, and presence of invasive species. Wetland A scores 3 out of 9 points for habitat functions. The buffer surrounding Wetland A consists of fields and shrub areas that are degraded by Buffer Condition non-native invasive speciec such as cutleaf blackberry (Rubus laciniatus) and Himalayan blackberry (Rubus armeniacus). 1778.0001 Centennial Park 9 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 5.1.1 Wetland Buffers Under AMC 20.93.830(b)(1), the standard buffer for a Category IV wetlands is 40 feet by following the typical minimization measures. A 15-foot building setback is also required from the edge of all critical area buffers per AMC 20.93.340. The buffer for the onsite wetland is generally low functioning due the dominance of non-native invasive species such as blackberry and reed canarygrass. 5.2 Relict Edgecomb Creek Channel The site investigations identified a relict stream channel associated with Edgecomb Creek on the southern portion of the site. Until recently, Edgecomb Creek entered the subject property through a culvert (barrier 99058) in the southeastern portion of the subject property, flowing north under SR 531. The stream flowed west along the southern border of the subject property, and then continued offsite through an additional culvert (barrier 99059) that conveyed flow south, back under SR 531. Both culverts are identified as barriers to fish passage in the completed SR 531 Edgecomb Creek Fish Passage Project, and the approved WSDOT USFWS, and National Marine Fisheries Service (NMFS) No Effect Project Notification Form (NMFS and USFWS, 2016). The upstream barrier was removed with the elimination of that culvert during the 2017 implementation of the Edgecomb Creek Fish Passage Project, but the downstream fish passage barrier culvert remains. The 2017, SR 531 Edgecomb Creek Fish Passage Project relocated â€œa 330-foot section of channel between two culvert fish barriers that [had] non-functioning weirs that [posed] additional barriers to fish migrationâ€ (USFWS, 2016). Of this section of relocated stream, 275 feet were previously located on the subject property and covered approximately 5,000 square feet of area. The relocation of the stream offsite and elimination of both culverts was expected to eliminate the fish passage barriers and potential fish stranding under SR 531. The downstream culvert was not removed with this 2017 construction project and it remains in place; however, it conveys only stormwater and untreated sheet flow from the road during precipitation events since the stream was rerouted to the new channel. The stream relocation project resulted in the creation of over 650 linear feet of meandering stream channel offsite to south of the SR 531 as mitigation for the project. Both culverts which originally connected onsite portions of the drainage to Edgecomb creek were identified as fish passage barriers, and the proposed project action included â€œconstructing the new stream channel, screening and blocking barrier 99058, plugging and abandoning barrier 99059, diverting the stream into the new section of channel, and turning over the existing channel to the City of Arlington for stormwater treatmentâ€. Furthermore, the project was implemented to â€œimprove access for salmon to 1.77 miles of upstream habitat, after removing the fish barrierâ€. The documents state that â€œthe abandoned channel is considered fish habitat that will be displaced and replaced by the constructed and improved stream channelâ€¦â€ (USFWS, 2016). In addition to increased fish habitat function, the completed project was constructed to improve water quality; the project findings include the statement: â€œexisting stormwater drainage from SR 531 drains north directly to Edgecomb Creek, and this section of the stream will be moved, thus improving water quality for Edgecomb Creek. The project removes two fish barriers and a series of weir barriers in the stream to improve passage. Following relocation, more of the stream will be connected to adjacent wetlands increasing the quantity of rearing habitat available to salmon that spawn in the creek. Edgecomb Creek will have at least 200 additional feet of stream length due to the stream relocationâ€ (USFWS, 2016). 1778.0001 Centennial Park 10 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 In addition to the USFWS consultation, NMFS was consulted and includes similar description to the USFWS form, with the exception on pages 2 and 4 of the NMFS document which indicate barrier 99058 will be left open to allow Edgecomb Creek to backwater into a portion of the remnant channel and retain this area as refugia habitat during high flows. However, further in this document on page 10 under â€œproject descriptionâ€, the document states that fish will be excluded from the existing channel and moved downstream of the project area with the remnant channel and dysfunction weirs turned over to the City of Arlington. The document also states that barrier 99059 will be screened and blocked with structural rock and streambank material to allow drainage from the abandoned stream channel that will continue to drain stormwater runoff, effectively isolating the remnant portions of the onsite drainage from stream habitat function. In addition, the construction plan set included in the NMFS document shows the culvert (barrier 99059) â€œTo be Abandonedâ€. As a result of the stream relocation, the relict channel no longer supports baseflow and appears to only convey stormwater from direct precipitation, overland flow from a nearby roadside ditch, and untreated runoff from SR 531. During the October 2018 site visit, no baseflow was noted in the relict channel, although pooled water was observed in scour holes and in the culvert itself. Similarly, during the November 2018 site visit, only shallow pools of water were observed in scoured areas despite recent heavy rainfall. Although the stream channel is abandoned, the culvert on the downstream reach is still in place, allowing for the stormwater that flows through the channel to enter Edgecomb Creek south of the subject property. As untreated stormwater during storm events is the main hydrology source for the relict channel, the channel will likely accumulate large loads of sediment and debris from SR 531 and the roadside ditch over time, and the relict channel could begin to fill in. The relict channel does not provide fish habitat due to the lack of stream hydrology and habitat connectivity to downstream fish-bearing waters. In addition, as identified on the USFWS form, barrier 99059 is a fish blockage culvert and presents the potential for fish stranding in the event high flood waters if fish are able to access the remaining onsite channel. As the relict channel is not considered a typed stream, it is not subject to stream buffers under AMC 20.93.700, but it will be considered a FHWCA per AMC 20.93.400 as the channel previously provided habitat for salmonids. Therefore, the relict channel will be subject to a 100-foot native growth protection easement and additional 50-foot management zone until such a time that this portion of channel is deregulated as a FHWCA. 5.2.1 Stream Buffers The relocated offsite Edgecomb Creek channel is considered a Type F water with documented Coho and Chum presence according to the WDFW SalmonScape inventory, which are considered ESA species, and therefore requires a standard 150-foot buffer per AMC Table 20.93-3 SalmonScape inventory. However, SR 531 intersects the buffer associated with offsite Edgecomb Creek, entirely interrupting the buffer from projecting onto the subject property, therefore, no buffer associated with Edgecomb Creek should be located on the subject property. 5.3 Artificial Drainage Ditches Three onsite linear ditches were observed on or near the subject property; all of which appear to be artificial and intentionally created. While the soils on-site are largely mapped as hydric, investigations 1778.0001 Centennial Park 11 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 found the soils throughout the site lack redoximorphic features and represent upland soil conditions. Therefore, all the ditches appear to have been excavated from non-hydric soils. Northern Ditch The northern ditch runs east to west along the northern parcel boundary and through Wetland A, receiving flows from the central ditch, and then continues offsite to the east into the Cityâ€™s stormwater system at the intersection of 67th Avenue Northeast and Highland View Drive, as documented in the Cityâ€™s stormwater infrastructure inventory. Historic aerials indicate that the site was previously used as agricultural land in the 1950s and 1960s (Appendices B8 and B9); the ditch is faintly visible in these aerials in the northern portion of the site. The ditch appears to be manmade and only conveys stormwater through the site. Central Ditch The central ditch flows south to north through the center of the site, beginning as a swale and flowing through Wetland A, and then flowing into the northern ditch. This ditch does not appear to be present in the 1954 and 1969 historic aerial photographs, but does appear in a 1990 aerial photograph, suggesting that it was likely established sometime between 1969 and 1990. The ditch appeared to be intentionally excavated to help drain the site for agricultural purposes. Roadside Ditch A manmade roadside ditch is present along the southern portion of the site which originates offsite to the east. The ditch flows in an east to west orientation, eventually discharging into the relict Edgecomb Creek channel and is the only source of hydrology for the relict channel. The ditch appears to have been previously excavated and is vegetated by grass upslope along the sides of the banks to the east. The ditch conveys only stormwater from upslope and surface flow from the highway as documented on the Cityâ€™s stormwater infrastructure map. 5.4 Offsite Improvements The WSDOT completed the Edgecomb Creek restoration project in order to improve fish passage of the stream. Edgecomb Creek has been relocated offsite to the south of the subject property. The new reach of the channel is located entirely south of SR 531, eliminating the roadway crossings, and therefore, also eliminating the need for the culverts which may present barriers to fish passage. The relocation project has resulted in an increase of 650 linear feet of new stream channel, restored habitat features, and unimpeded access to upstream spawning habitat. The project has provided an overall benefit to the function of the stream by removing these fish barriers. According to the memorandum by WSDOT, approximately 0.13 acres and 329 linear feet of the stream were permanently impacted by this project due to abandonment of the channel on the subject property. Approximately 0.09 acre and 189 linear feet of the riffle and pool habitat within Edgecomb Creek were impacted temporarily for construction access and water handling. Mitigation for these impacts included the creation of 0.15 acre/665 linear feet of new stream area, as well as restoration within the stream channel; restoration of 0.48 acre of an adjacent wetland; and improved connectivity between Edgecomb Creek and the adjacent wetlands. 1778.0001 Centennial Park 12 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 The instream restoration and improvements included the elimination of fish barriers, increased channel meander and overall stream habitat area, improved floodplain connectivity to adjacent wetlands, addition of gravel substrate, limiting the extent of downstream grading, and stabilizing new stream meander banks to provide habitat for adult and juvenile salmon. Restoration for the adjacent riparian habitat was also completed and included: replanting affected areas with native vegetation; stabilizing stream meander bends; planting roadside areas with low growing woody vegetation; planting occasionally or seasonally flooded streambanks with appropriate native plant species that will aid in detaining flows and providing shade and cover habitat for juvenile fish and wildlife species; and planting seasonally flooded streambanks with emergent plants with fibrous roots to stabilize the banks and produce organic matter and support habitat development for macroinvertebrates. The restoration site will be monitored annually for 10 years following its construction. The riparian plantings will be monitored for three years to ensure planting survival, and the stream will be monitored in years 1, 5, and 10 for fish passage. A contingency plan is in place to address fish passage, plant survival, herbivory, weed control, and vandalism. 5.5 Previously Identified Features According to WSDOTâ€™s â€œAquatic Resources Assessment Reportâ€ dated November 2016, an area along the northeastern extent of the relict onsite channel was considered a potential wetland during the project and was identified as â€œWetland 3â€. Additionally, WSDOT identified the roadside ditch as a potential jurisdictional WOTUS. Please refer to Chapter 6 for WOTUS considerations. The WSDOT delineation occurred during January and February of 2016 (wet season), during a period of time in which precipitation was above statistically normal levels. Precipitation data was obtained from the NOAA weather station at Seattle-Tacoma Airport in order to obtain precipitation values during and preceding the prior field investigation efforts from WSDOT for the general Puget Sound area. While this weather station is not in the immediate vicinity of the subject property, it is the most reliable weather station with consistent and scientifically accurate measurements. A summary of data collected is provided in Table 4. Table 4. Precipitation Summary1. Percent of Day 1 Week 2 Weeks Last 30 days Year-to-Date2 Date Day Of Before Prior Prior (Observed/Normal) (Observed/Normal) Normal (month/year) 1/28/16 0.61 0.82 3.91 5.51 7.21/5.58 31.60/20.50 129/154 2/25/16 0.00 0.02 0.76 3.61 12.04/7.96 36.60/24.10 151/152 Notes: 3. Precipitation levels provided in inches. Data obtained from the NOAA (http://w2.weather.gov/climate/xmacis.php?wfo=sew) for Seattle- Tacoma airport. 4. Year-to-date precipitation is the total for the water year from October 1st to the onsite date(s). Precipitation levels during the January 2016 site visits during which time Wetland 3 was delineated were well above the statistical normal for the water year and 30 days prior to the visit. In addition, over 5.5 inches of precipitation was recorded in the two weeks leading up to the site investigation and almost 4 inches was recorded one week leading up to the site investigation. Therefore, hydrologic conditions encountered by WSDOT would have been much wetter than normal, potentially resulting in false-positive indicators of wetland hydrology. 1778.0001 Centennial Park 13 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 The area identified by WSDOT as Wetland 3 was investigated by SVC and was determined to be non- wetland as it lacks hydric soils. While hydrophytic vegetation is present due to the presence of common facultative (FAC) species typical of disturbed and/or upland area, and wetland hydrology is present during the wet season in one of the data plots, the hydrology does not appear to be sustained long enough throughout the growing season to develop redoximorphic features in the soil. Previous investigations by WSDOT identified hydric soils onsite; however, multiple test pits and formalized data plots in this area were unable to replicate these findings. SVC found that the soils in these areas lacked redox starting within the first 12 inches of the soil profile, indicating that a seasonally high- water table (water table within 12 inches of the soil surface) is not present during the growing season, and therefore the redox features have not formed. In addition, a depleted layer was also not found within 12-inches of the soil surface. SVC collected two data plots (DP-8 and DP-9) in this area which confirm the lack of hydric soils. The WSDOT assessment report indicates that the roadside ditch that contributes to the relict Edgecomb Creek is considered a jurisdictional ditch. According to the report the ditch exhibited signs of scour, the presence of a defined channel with bed and bank, debris rack, areas of flowing or standing water, and clear areas of gravel devoid of vegetation. The report later notes that no stream gravel was observed in the ditch. It should be noted that both the WSDOT investigations occurred during a wet season with significantly higher levels of precipitation than normal, which likely exaggerated hydrology both on and offsite. SVC completed investigations during statically normal precipitation levels and did not observe any of these characteristics. No flowing or standing water was observed during the fall investigation, and the ditch was noted to be vegetated with grass throughout the channel as well as the banks. No stream cobble or gravel was observed in the ditch. A conditionally approved site plan dated September 12, 2006 depicts a wetland, labeled â€œWetland Zâ€, in the forested area in the center of the site. SVC collected two additional data plots (DP-10 and 11) in this area to support a non-wetland determination. While both areas exhibit a predominance of hydrophytic vegetation, neither location displays evidence of primary wetland hydrology or hydric soils. In fact, soils lacked all evidence of redoximorphic features. Soils at DP-10 are characterized by 13 inches of very dark brown sandy loam underlain by three inches of a dual matrix of very dark grayish brown and very dark brown sandy loam, over black silt loam. DP-11 is characterized by 8 inches of very dark brown sandy loam underlain by a dual matrix of dark yellowish brown and very dark grayish brown gravelly sandy loam soils. It should be noted that the delineation that identified this area as wetland was completed sometime between 2001 and 2006 using an older methodology. The Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, Version 2.0 (USACE, 2010) has since been published and is acknowledged as the best available science, and therefore is used as the standard methodology for delineations. This is an important distinction as the old methodology identified any â€œdarkâ€ soil as being hydric, whereas the new methodology requires additional features such as a depleted matrix or redox in addition to a â€œdarkâ€ surface soil. Hydric soil indicators are also periodically reviewed and updated and published in the Field Indicators of Hydric Soils in the United States (USDA, 2018). Therefore, the area identified on the 2006 plan as â€œWetland Zâ€ may have previously met the old wetland criteria but is not considered wetland under the updated delineation methodology. 1778.0001 Centennial Park 14 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 6. Regulatory Considerations The site investigations in fall of 2018 identified and delineated one potentially-regulated wetland (Wetlands A) and one relict stream channel on the subject property, and one regulated stream channel offsite to the south within 225 feet of the site. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, or priority species were identified on or adjacent to the subject property during the site investigations. 6.1 Local Critical Areas Requirements 6.1.1 Wetland Buffers AMC 20.93.800(a) has adopted the 2014 Revised Washington State Wetland Rating System for Western Washington (Hruby, 2014). With this system, Category IV wetlands are those that generally provide low levels of function and score less than 16 points. The onsite Wetland A is classified as a Category IV wetland. Under AMC 20.93.830, the standard buffers for a Category IV wetland is 40 feet assuming the implementation of all minimization measures listed in ACM Table 20.93-5 (Table 5 below). Walking trails are proposed within outer twenty-five percent of the wetland buffer. Per AMC 20.93.430.3.A, walking trails are allowed in this portion of the buffer provided that they avoid the removal of significant trees, utilize pervious surfaces, are no more than five feet in width, and are limited to pedestrian use. Per AMC 20.93.830.b.3, the standard buffer widths assume that the buffer is vegetated with an appropriate native plant community; if the buffer is unvegetated, sparsely vegetated, or vegetated with non-native invasive, then the buffer should be planted or widened. The existing buffer for Wetland A is currently degraded with a presence of non-native, invasive species. Therefore, a buffer enhancements plan is proposed, and will include removing non-native, invasive species and replanting with native species, which will result in an improvement of ecological function of the wetlands and buffers over current conditions. Table 5. Measures to Minimize Impacts to Wetlands Examples of Activities and Uses that Cause Examples of Measures to Minimize Impacts Disturbance Disturbances Lights â€¢Parking lots â€¢Direct lights away from critical areas and â€¢Warehouses buffers â€¢Manufacturing â€¢Day use only regulations preventing the need â€¢Residential for lights â€¢Parks â€¢Timer on lights Noise â€¢Manufacturing â€¢Locate activity that generates noise away from â€¢Residential wetlands â€¢Seasonal limitations on hours of operation Toxic runoff* â€¢Parking lots â€¢Route all new, untreated runoff away from â€¢Roads wetland while ensuring wetland is not dewatered â€¢Manufacturing â€¢Establish covenants limiting use of pesticides â€¢Residential areas 1778.0001 Centennial Park 15 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Examples of Activities and Uses that Cause Examples of Measures to Minimize Impacts Disturbance Disturbances â€¢Application of agricultural pesticides within 150 ft of critical area or buffer â€¢Landscaping â€¢Apply integrated pest management Stormwater runoff â€¢Parking lots â€¢Retrofit stormwater detention and treatment for â€¢Roads roads and existing adjacent development â€¢Manufacturing â€¢Prevent channelized flow from lawns that â€¢Residential areas directly enters the buffer â€¢Commercial â€¢Landscaping Change in water â€¢Impermeable surfaces â€¢Infiltrate or treat, detain, and disperse into regime â€¢Lawns buffer new runoff from impervious surfaces and â€¢Tilling new lawns â€¢Forest and forest duff removal â€¢Retain minimum forest and forest duff Pets and human â€¢Residential areas â€¢Use privacy fencing; plant dense vegetation to disturbance â€¢Parks delineate buffer edge and to discourage disturbance using vegetation appropriate for the ecoregion; place wetland and its buffer in a separate tract Dust â€¢Construction sites â€¢Use best management practices to control dust Disruption of â€¢Roads â€¢Maintain connection to offsite areas that are corridors or â€¢Residential undisturbed connections â€¢Commercial â€¢Restore corridors or connections to offsite â€¢Manufacturing habitats by replanting â€¢Landscaping â€¢Stormwater * These examples are not necessarily adequate for minimizing toxic runoff if threatened or endangered species are present at the site. 6.1.2 Stream Buffers The relocated offsite Edgecomb Creek channel is considered a Type F-ESA water with documented Coho and Chum presence according to the WDFW SalmonScape inventory, and therefore requires a standard 150-foot buffer per AMC Table 20.93-3 . However, SR 531 intersects the buffer associated with offsite Edgecomb Creek, entirely interrupting the buffer from projecting onto the subject property, therefore, no buffer associated with Edgecomb Creek should be located on the subject property. 6.1.3 Fish and Wildlife Habitat Conservation Area Due to the successful relocation of the channel offsite, the Applicant is in the process of declassifying the relict channel as a stream as it no longer meets the definition of a typed waterbody described in WAC 222-16-030 or AMC 20.93.700. A technical memorandum and water type modification form has been submitted to DNR under separate cover (SVC, 2019). The relict channel was previously utilized by salmonid species and therefore is considered FHWCA under AMC 20.93.400. SVC is 1778.0001 Centennial Park 16 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 currently completing a bed gradient study to determine if the channel continues to provide habitat and qualify as a FWHCA or if it should be deregulated; the findings will be submitted under separate cover. However, until it is formally declassified and deregulated, the relict channel is subject to a 100-foot native growth protection easement and additional 50-foot management zone per AMC 20.93.440(a). Activities proposed during Phase 1 of the development will avoid all impacts to the 100-foot native growth protection easement, and 50-foot management zone. Should the relict channel no longer meet the FHWCA, the Client will seek to deregulate the relict stream channel, and plan to develop that portion of the site during Phase 2. 6.2 State and Federal Considerations 6.2.1 Potential Waters of the United States (WOTUS) The results of the 2018 site investigations identified one wetland, one relict stream channel (Edgecomb Creek), and three excavated drainage ditches on the subject property. Additional wetlands were identified by WSDOT offsite to the south of SR 531 and are associated with Edgecomb Creek restoration area. The onsite wetland is a small depressional wetland that receives water primarily from direct precipitation and surface runoff from adjacent upland areas. The offsite wetland to the south appears to be larger depressional and riverine systems associated with Edgecomb Creek. The ditches appear to have been originally constructed in upland areas for the purpose of making property boundaries and conveying stormwater runoff from adjacent roads, uplands, and for agricultural purposes. 6.2.2 The Federal Clean Water Rule The Federal Register published a final revised Clean Water Rule: â€œDefinition of Waters of the United Statesâ€ on 29 June 2015 (FR Vol 30, No. 124; pages 37054 â€“ 37127) that defines the scope of waters protected under the Federal Clean Water Act (CWA). The effective date of this rule was to be 28 August 2015. This rule provided a definition of Waters of the United States (WOTUS) that differed from that in the 2 December 2008 joint memorandum from EPA and USACE following the U.S. Supreme Courtâ€™s Decision in Rapanos v. United States & Carabell v. United States (USACE, 2008). Implementation of the 2015 Clean Water Rule was stayed by the U.S. 6th Circuit Court of Appeals on October 9, 2015-- a little over one month after that ruleâ€™s effective dateâ€”until recently. On February 28, 2017 President Trump issued Executive Order 13778 ordering EPA and USACE to review and or rescind the 2015 Clean Water Rule. This was followed by the Suspension Rule (6 February 2018), which delayed implementation of the 2015 Clean Water Rule to 6 February 2020 and provided time for a two-part rulemaking process to revise the definition of WOTUS. But in August 2018, Judge David C. Norton of the U.S. District Court for South Carolina issued an injunction claiming that the Suspension Rule was in violation of the Administrative Procedures Act. This injunction effectively reinstated the 2015 Clean Water Rule in 26 states, including Washington. Therefore, at the time of writing this report, the 2015 Clean Water Rule is currently in use within the State of Washington to describe waters that are to be regulated under Section 404 of the CWA. The 2015 Clean Water Rule generally describes waters that are WOTUS directly, that are waters of the US because they are impoundments or tributaries to WOTUS, and that are waters of the US because 1778.0001 Centennial Park 17 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 they are adjacent to or because they have a significant nexus to WOTUS. The Rule also describes waters that are not WOTUS. These general descriptions are summarized in the paragraphs that follow. The 2015 Clean Water Rule describes the following waters where Section 404 jurisdiction would be asserted and considered waters of the United States (WOTUS): (1) traditional navigable waters: all waters which are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce, included all waters which are subject to the ebb and flow of the tide, (2) interstate waters (including interstate wetlands), and (3) the territorial seas. The following additional waters may be considered WOTUS in Washington State: (4) all impoundments of traditional navigable waters, interstate waters, and territorial seas, (5) all â€œtributariesâ€ to a traditional navigable water, interstate water, or territorial sea, (6) all waters â€œadjacentâ€ to waters within categories 1 through 5 above, (7) all waters located within the 100-year floodplain of a traditional navigable water, interstate water, or territorial sea, and (8) all waters within 4,000 feet of the high tide line or ordinary high water of a WOTUS that are determined on a case-specific basis to have a â€œsignificant nexusâ€ to a traditional navigable water, interstate water, or territorial sea. Edgecomb Creek is not a traditional navigable water (TNW), but is a tributary to the Puget Sound, which is identified as a TNW (USACE, 2008). Therefore, the relocated Edgecomb Creek is likely considered a WOTUS through criterion 5 above. Wetland A is located within 4,000 feet from the Edgecomb Creek channel and would likely be considered a WOTUS through a significant nexus test (criterion 8 above), subject to Section 404 jurisdiction. In addition, the 2015 Clean Water Rule identifies fifteen waters or areas where jurisdiction will NOT be asserted, even if they otherwise meet the description of WOTUS: (1) waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of the CWA, (2) prior converted cropland, (3) ephemeral ditches that are not a relocated tributary or excavated tributary, (4) ditches with intermittent flow that are not a relocated tributary, excavated in a tributary, and that do not drain wetlands, (5) ditches that do not flow, directly or indirectly, into a traditional navigable water, interstate water, or territorial sea, (6) artificially irrigated areas that would revert to dry land should irrigation cease, (7) artificially constructed lakes and ponds, created in dry land, such as farm and stock watering ponds, irrigation ponds, settling basins, fields flooded for rice growing, log cleaning ponds, or cooling ponds, (8) artificial reflecting pools or swimming pools created in dry land, (9) small ornamental waters created in dry land, (10) water-filled depressions created in dry land incidental to mining or construction activity, including pits excavated for obtaining fill, sand, or gravel that fill with water, (11) erosional features, including gullies, rills, and other ephemeral features that do not meet the definition of tributary, non-wetland swales, and lawfully constructed grassed waterways, (12) puddles, (13) groundwater, including groundwater drained through subsurface drainage systems, (14) stormwater control features constructed to convey, treat, or store stormwater that are created in dry land, and (15) wastewater recycling structures constructed in dry land; detention and retention basins built for wastewater recycling; groundwater recharge basins; percolation ponds built for wastewater recycling; and water distributary structures built for wastewater recycling. All three of the identified ditches onsite appear to have been excavated from dry land. The ditches are within a soil map unit classified as hydric soil, however test pits in some areas adjacent to the ditches and other data plots in upland areas of the site do not meet for hydric soils. The ditches meet 1778.0001 Centennial Park 18 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 criteria 3 and 5 listed above and therefore appear to not be subject to regulation under Section 404 of the CWA. 6.2.3 Permitting Requirements Wetland development approvals, including local review, Federal permits, and State certification, are necessary in order for the proposed project to proceed. The project does not propose any fill within a wetland or its buffer. During Phase 2, the project will propose the filling of the relict stream channel in order to construct a portion of the multi-family dwellings. The required fill within the channel will account for 210 linear feet of the relict channel, confirmation of coverage under a simplified CWA Section 404 Nationwide Permit (NWP) should be the limit of State and Federal permitting efforts under Sections 401 and 404 of the CWA. Final determination of NWP coverage is at the discretion of the USACE, and other minor NWPs, such as NWPs 29 and 39, may be also be used to authorize this project. Therefore, careful consideration of regional permit conditions has transpired during the planning process in order to satisfy the requirements for a variety of NWPs. Given that the stream channel has already been relocated offsite and appropriate mitigation has been completed in the form of channel creation, stream restoration, and riparian habitat restoration, no further mitigation or restoration should be required for the proposed filling activity. 1778.0001 Centennial Park 19 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 7. Buffer Enhancement Plan The following sections present the proposed buffer enhancement plan to address the low functioning buffer of onsite Wetland A. The proposed plan closely adheres to local Critical Areas regulations specified in AMC Chapter 20.93. 7.1 Purpose and Need The purpose of the proposed project is to provide additional housing units, park, open space, and retail area the City of Arlington. The project does not propose the loss of any wetland area or habitat; however, the existing buffer is degraded by non-native invasive species including reed canarygrass and Himalayan blackberry. Per AMC 20.93.830(b)(3), in order to utilize the standard buffer width, the buffer must be planted with appropriate native vegetation to ensure adequate buffer functionality. As a result, a buffer enhancement plan is proposed. 7.2 Description of Impacts and Mitigation Strategy The project was carefully designed in order to avoid impacts to critical areas to the greatest extent feasible, and no direct impacts to the wetland nor its buffer are proposed. However, the existing buffer is degraded by the presence of non-native invasive species, and therefore does not provide adequate buffer functions. The proposed buffer enhancement actions will improve ecological functions and value by providing additional functions according to the needs of the site and watershed and providing an overall improvement to wetland and buffer function. Removing wetland buffer degradations such as non-native, invasive vegetation and replacing with native plantings within the buffer will restore the habitat functions and critical area protection and improve hydrologic function and water quality of runoff leaving the project site. A diverse herbaceous layer will be established to provide browse, cover, and nesting for small mammals, which in turn provide prey for raptors and other small mammals. The proposed enhancement plan will provide a net gain in function and improved protection to the wetlands from the proposed development. The wetland buffer enhancements proposed will include, but may not be limited to, the following recommendations: â€¢ Enhance a total of 18,632 square feet of onsite buffer area for Wetland A. â€¢ Pre-treat invasive plants with a Washington Department of Agriculture approved herbicide. After pre-treatment, grub to remove the invasive plants and replant all cleared areas with native trees, shrubs, and ground covers listed in Appendix C; Pre-treatment of the invasive plants should occur a minimum of two weeks prior to removal; â€¢ Replant the enhancement area with native trees, shrubs, and groundcovers listed in Appendix C, or substitutes approved by the responsible wetland scientist, to help retain soils, filter stormwater, and increase biodiversity; â€¢ An approved native seed mix will be used to seed the disturbed mitigation areas after planting; â€¢ Maintain and control invasive plants annually, at a minimum, or more frequently if necessary. Maintenance to reduce the growth and spread of invasive plants is not restricted to chemical applications but may include hand removal, if warranted; â€¢ Provide dry-season irrigation as necessary to ensure native plant survival; 1778.0001 Centennial Park 20 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 â€¢ Direct exterior lights away from the wetlands wherever possible; and â€¢ Place all activities that generate excessive noise (e.g., generators and air conditioning equipment) away from the wetlands where feasible. 7.3 Approach and Best Management Practices The proposed wetland buffer enhancement plan is intended to provide increased wetland protections by maintenance and improvement of wetland buffer functions. Enhancement of the wetland buffer should occur concurrently with the proposed development construction. TESC measures will be implemented according to the Stormwater Pollution Prevention Plan submitted as a part of the site development permit. Recommended TESC measures include high-visibility fencing (HVF) installed around native vegetation along the modified perimeter of the buffer, silt fencing between the graded areas and undisturbed buffer, plastic sheeting on stockpiled materials, and seeding of disturbed soils. These TESC measures should be installed prior to the start of development or enhancement actions and actively managed and overseen by the Certified Erosion and Sedimentation Control Lead (CESCL) for the duration of the project. All equipment staging and materials stockpiles should be kept out of the identified wetland and associated buffer, and the area will need to be kept free of spills and/or hazardous materials. All fill material and road surfacing will be sourced from upland areas onsite or from approved suppliers and will be free of pollutants and hazardous materials. Construction materials along with all construction waste and debris will be effectively managed and stockpiled on paved surfaces and kept free of the remaining wetland and buffer areas. Following completion of the development, the entire site will be cleaned and detail graded using hand tools wherever necessary, and TESC measures will be removed. 7.4 Goals, Objectives, and Performance Standards The goals and objectives for the proposed wetland buffer enhancement actions will be based on providing additional habitat and protection for the onsite wetland and providing supplementary water quality and hydrological functions. Wetland buffer enhancement actions are capable of improving habitat function for the wetland over time by establishment of a dense vegetated barrier between the project and the critical area. The goals and performance standards for the enhancement actions are outlined below. Goal 1 â€“ Improve and protect wetland buffer functions. Objective 1 â€“ Establish areas of native trees and shrubs to create diverse horizontal and vertical canopy structure and additional wildlife habitat. Performance Standard 1 â€“ By the end of Year 5, the non-compensatory buffer enhancement area will have at least 2 species of native trees, 3 species of native shrubs; native volunteer species will be included in the count. To be considered, the native species must make up at least 5 percent of the vegetation class. Performance Standard 2 â€“ Minimum plant survivorship will be at 100 percent of installed plants at the end of Year 1 (replacement of lost plants allowed), 85 percent at the end of Year 2, and 75 percent at the end of Year 3. 1778.0001 Centennial Park 21 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Performance Standard 3 â€“ Non-native invasive plants will not make up more than 20 percent total cover in any growing season during the monitoring period following Year 1. 7.5 Plant Materials and Installation 7.5.1 Plant Materials All plant materials to be used for the enhancement actions will be nursery grown stock from a reputable, local source. Only native species are to be used; no hybrids or cultivars will be allowed. Plant material provided will be typical of their species or variety; if not cuttings they will exhibit normal, densely-developed branches and vigorous, fibrous root systems. Plants will be sound, healthy, vigorous plants free from defects, and all forms of disease and infestation. Container stock shall have been grown in its delivery container for not less than six months but not more than two years. Plants shall not exhibit rootbound conditions. Under no circumstances shall container stock be handled by their trunks, stems, or tops. Seed mixture used for hand or hydroseeding shall contain fresh, clean, and new crop seed mixed by an approved method. The mixture is specified in the plan set. All plant material shall be inspected by a qualified Wetland Scientist upon delivery. Plant material not conforming to the specifications below will be rejected and replaced by the planting contractor. Rejected plant materials shall be immediately removed from the site. Fertilizer will be in the form of Agroform plant tabs or an approved like form. Mulch will consist of sterile wheat straw for seeded areas (if necessary) and clean recycled wood chips approximately Â½- inch to 1-inch in size and Â½-inch thick for woody plants. The mulch material may be sourced from non-invasive woody materials sourced from the land clearing activities. 7.5.2 Plant Scheduling, Species, Density, and Location Plant installation should occur as close to conclusion of clearing and grading activities as possible to limit erosion and limit the temporal loss of function provided by the wetland and buffer. All planting should occur between September 1 and May 1 to ensure plants do not dry out after installation, or temporary irrigation measures may be necessary. All planting will be installed according to the procedures detailed in the following subsections and as outlined on the site plans in Appendix C. 7.5.3 Quality Control for Planting Plan All plant material shall be inspected by the Wetland Scientist upon delivery. Plant material not conforming to the specifications above will be rejected and replaced by the planting contractor. Rejected plant materials shall be immediately removed from the site. Under no circumstances shall container stock be handled by their trunks, stems, or tops. The landscape contractor shall provide the Wetland Scientist with documentation of plant material that includes the supplying nursery contact information, location of genetic source, plant species, plant quantities, and plant sizes. 7.5.4 Product Handling, Delivery, and Storage All seed should be delivered in original, unopened, and undamaged containers showing weight, analysis, and name of manufacturer. This material should be stored in a manner to prevent wetting 1778.0001 Centennial Park 22 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 and deterioration. All precautions customary in good trade practice shall be taken in preparing plants for moving. Workmanship that fails to meet industry standards will be rejected. Plants will be packed, transported, and handled with care to ensure protection against injury and from drying out. If plants cannot be planted immediately upon delivery they should be protected with soil, wet peat moss, or in a manner acceptable to the Wetland Scientist. Plants and mulch not installed immediately upon delivery shall be secured on the site to prevent theft or tampering. No plant shall be bound with rope or wire in a manner that could damage or break the branches. Plants transported on open vehicles should be secured with a protective covering to prevent windburn. 7.5.5 Preparation and Installation of Plant Materials The planting contractor shall verify the location of all elements of the wetland buffer enhancement plan with the responsible Wetland Scientist prior to installation. The responsible Wetland Scientist reserves the right to adjust the locations of landscape elements during the installation period as appropriate. If obstructions are encountered that are not shown on the drawings, planting operations will cease until alternate plant locations have been selected by and/or approved by the Wetland Scientist. Circular plant pits with vertical sides will be excavated for all container stock. The pits should be at least 1.5 times the width of the rootball, and the depth of the pit should accommodate the entire root system. Please refer to planting detail in Appendix C. Broken roots should be pruned with a sharp instrument and rootballs should be thoroughly soaked prior to installation. Set plant material upright in the planting pit to proper grade and alignment. Water plants thoroughly midway through backfilling and add Agroform tablets. Water pits again upon completion of backfilling. No filling should occur around trunks or stems. Do not use frozen or muddy mixtures for backfilling. Form a ring of soil around the edge of each planting pit to retain water and install a 4- to 6-inch layer of mulch around the base of each container plant. 7.5.6 Temporary Irrigation Specifications While the native species selected for the wetland buffer enhancement actions are hardy and typically thrive in northwest conditions and the proposed actions are planned in areas with sufficient hydroperiods for the species selected, some individual plants might perish due to dry conditions. Therefore, irrigation or regular watering may be provided as necessary for the duration of the first two growing seasons, two times per week while the native plantings become established. If used, irrigation will be discontinued after two growing seasons. Frequency and amount of irrigation will be dependent upon climatic conditions and may require more or less frequency watering than two times per week. 7.5.7 Invasive Plant Control and Removal Invasive species to be removed include Himalayan blackberry, reed canarygrass, and all listed noxious weeds. Non-native invasive plant species are well-established within a portion of Wetland A and the onsite wetland buffer and require an effective control strategy. To ensure non-native invasive species do not expand following the wetland buffer enhancement actions, non-native invasive plants within the entire mitigation area will be pretreated with a root-killing herbicide approved for use in aquatic sites (i.e. Rodeo) a minimum of two weeks prior to being cleared and grubbed from the enhancement area. A second application is strongly recommended. The pre-treatment with herbicide should occur prior to all planned enhancement actions, and spot treatment of surviving non-native invasive vegetation should be performed again each fall prior to senescence for a minimum of five years. 1778.0001 Centennial Park 23 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 7.6 Maintenance & Monitoring Plan The conceptual maintenance and monitoring plan is described below in accordance with AMC 20.93.850. The Applicant is committed to compliance with the wetland buffer enhancement plan and overall success of the project. As such, the Applicant will continue to maintain the project, keeping the site free from of non-native invasive vegetation, trash, and yard waste. The wetland buffer enhancement plan will require continued monitoring and maintenance to ensure the actions are successful. Therefore, the project site will be monitored for a period of five years with formal inspections by a qualified Wetland Scientist. The site will be monitored for a minimum of five years with monitoring plans submitted for zero, one, two, three and five years. Closeout assessment will also be conducted in Year 5 to ensure the adequate enhancement areas were established. Monitoring will consist of percent cover measurements at permanent monitoring stations, walk- through surveys to identify invasive species presence and dead or dying enhancement plantings, photographs taken at fixed photo points, wildlife observations, and general qualitative habitat and stream function observations. To determine percent cover, observed vegetation will be identified and recorded by species and an estimate of areal cover of dominant species within each sampling plots. Circular sample plots, approximately 30 feet in diameter (706 square feet), are centered at each monitoring station. The sample plots encompass the specified wetland buffer areas and terminate at the observed wetland boundary. Trees and shrubs within each 30-foot diameter monitoring plot are then recorded to species and areal cover. Herbaceous vegetation is sampled from a 10-foot diameter (78.5 square feet) within each monitoring plot, established at the same location as the center of each tree and shrub sample plot. Herbaceous vegetation within each monitoring plot is then recorded to species and includes an estimate of percent areal cover. A list of observed tree, shrub, and herbaceous species including percent areal cover of each species and wetland indicator status is included within the monitoring report. Plant survivorship of planted stock will be estimate at as-built/time zero and for each monitoring year by counting the number of dead/dying and live planted stock in each monitoring plot. Percent survival will equate to the number plants alive divided by the total number plants counted, multiplied by 100. 7.7 Reporting Following each monitoring event, a monitoring report detailing the current ecological status of the wetland buffer enhancement actions, measurement of performance standards, and management recommendations will be prepared and submitted to the City within 90 days of each monitoring event to ensure full compliance with the wetland buffer enhancement plan, performance standards, and conditions of approval. 7.8 Contingency Plan If monitoring results indicate that performance standards are not being met, it may be necessary to implement all or part of the contingency plan. Careful attention to maintenance is essential in ensuring that problems do not arise. Should any portion of the site fail to meet the success criteria, a contingency plan will be developed and implemented with regulatory approval. Such plans are adaptive and should be prepared on a case-by-case basis to reflect the failed mitigation characteristics. 1778.0001 Centennial Park 24 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Contingency plans can include additional plant installation, erosion control, and plant substitutions including type, size, and location. Contingency/maintenance activities may include, but are not limited to: 1. Replacing plants lost to vandalism, drought, or disease, as necessary; 2. Replacing any plant species with a 20 percent or greater mortality rate after two growing seasons with the same species or native species of similar form and function; 3. Irrigating the mitigation areas only as necessary during dry weather if plants appear to be too dry, with a minimal quantity of water; 4. Reseeding and/or repair of wetland buffer areas as necessary if erosion or sedimentation occurs; 5. Spot treat non-native invasive plant species; and 6. Removing all trash or undesirable debris from the stream and buffer areas as necessary. 1778.0001 Centennial Park 25 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 8. Closure The findings and conclusions documented in this report have been prepared for specific application to this project. They have been developed in a manner consistent with that level of care and skill normally exercised by members of the environmental science profession currently practicing under similar conditions in the area. Our work was also performed in accordance with the terms and conditions set forth in our proposal. The conclusions and recommendations presented in this report are professional opinions based on an interpretation of information currently available to us and are made within the operation scope, budget, and schedule of this project. No warranty, expressed or implied, is made. In addition, changes in government codes, regulations, or laws may occur. Due to such changes, our observations and conclusions applicable to this project may need to be revised wholly or in part. All wetland boundaries identified by SVC are based on conditions present at the time of the site inspection and considered preliminary until the flagged wetland boundaries are validated by the jurisdictional agencies. Validation of the wetland boundaries by the regulating agency provides a certification, usually written, that the wetland boundaries verified are the boundaries that will be regulated by the agencies until a specific date or until the regulations are modified. Only the regulating agencies can provide this certification. As wetlands are dynamic communities affected by both natural and human activities, changes in wetland boundaries may be expected; therefore, wetland delineations cannot remain valid for an indefinite period of time. Local agencies typically recognize the validity of wetland delineations for a period of five years after completion of a wetland delineation report. Development activities on a site five years after the completion of this wetland delineation report may require revision of the wetland delineation. In addition, changes in government codes, regulations, or laws may occur. Due of such changes, our observations and conclusions applicable to this site may need to be revised wholly or in part. 1778.0001 Centennial Park 26 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 9. References Arlington Municipal Code (AMC). 2018. Chapter 20.93 Environmentally Critical Areas - https://library.municode.com/wa/arlington/codes/code_of_ordinances?nodeId=TIT20ZO_C H20.93ENCRAR. Current through October 16, 2018. Brinson, M. M. 1993. A hydrogeomorphic classification for wetlands, Technical Report WRP-DE-4. U.S. Army Corps of Engineer Waterways Experiment Station. Vicksburg, MS. Cowardin, L.M., V. Carter, F. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Fish & Wildlife Service. Washington D.C. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Granger, T., T. Hruby, A. McMillan, D. Peters, J. Rubey, D. Sheldon, S. Stanley, and E. Stockdale. 2005. Wetlands in Washington State - Volume 2: Guidance for Protecting and Managing Wetlands. Washington State Department of Ecology. Publication #05-06-008. Olympia, Washington. April, 2005. Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Hruby, T. 2014. Washington State Wetland Rating System for Western Washington â€“ Revised. Washington State Department of Ecology Publication # 14-06-29. Debose A., and Klungland, M.W. 1983. Soil Survey of Snohomish County Area, Washington. United States Department of Agriculture, Soil Conservation Service in cooperation with Washington State Department of Natural Resources, and Washington State University, Agriculture Research Center. Washington, D.C. Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X Munsellïƒ¢ Color, 2000. Munsellïƒ¢ soil color charts. New Windsor, New York. Munsellïƒ¢ Color, 2000. Munsellïƒ¢ Soil Color Charts. New Windsor, New York. Nationwide Environmental Title Research. 2019. Historic Aerials by NETROnline. Website: https://www.historicaerials.com/viewer Natural Resources Conservation Service (NRCS). 1995. Hydric Soils of Washington. U.S. Department of Agriculture. Washington D.C. Sheldon, D., T. Hruby, P. Johnson, K. Harper, A. McMillan, T. Granger, S. Stanley, and E. Stockdale. 2005. Wetlands in Washington State - Volume 1: A Synthesis of the Science. Washington State Department of Ecology. Publication #05-06-006. Olympia, Washington. March, 2005. 1778.0001 Centennial Park 27 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Shramek, Joe. 2017. Washington Department of Natural Resources. 2017 Protocol Stream Survey Process and Water Level and Streamflow Forecast memorandum. February 28, 2017. Website: https://www.dnr.wa.gov/publications/fp_wt_streamsurvey_20170228.pdf?vwlt7i. United States Army Corps of Engineers (USACE). 2008. Navigable Waters of the U.S. in Washington State. Revised December 31, 2008. Website: https://www.nws.usace.army.mil/Portals/27/docs/regulatory/permit%20guidebook/Navigable _Waters_of_the_US_in_WA_State.pdf USACE. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Ver 2.0), ed. J.S. Wakeley, Lichvar, R.W. and Noble, C.V. ERDC/EL TR- 10-3. Vicksburg, MSS: U.S. Army Engineer Research and Development Center. United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS). 2018. Field Indicators of Hydric Soils in the United States, Version 8.2. L.M. Vasilas, G.W. Hurt, and J.F. Berkowitz (eds.). USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils Washington Administrative Code (WAC). 2006. Section 222-16-030 and -031 â€“ Water Typing System. Website: https://app.leg.wa.gov/WAC/default.aspx?cite=222-16-030. Effective date December 16, 2006. Washington Administrative Code (WAC). 2006. Section 222-16-030 and -031 â€“ Water Typing System. Website: https://app.leg.wa.gov/WAC/default.aspx?cite=222-16-030. Effective date December 16, 2006. Washington Department of Transportation (WSDOT). 2016. WSDOT USFWS No Effect Project Form. Submitted March 3, 2016. WSDOT. 2016. WSDOT NOAA Short Project Form. Submitted March 3, 2016. Washington Department of Natural Resources (DNR). 2002. Forest Practice Board Manual, Section 13 â€“ Guidelines for Determining Fish Use for the Purpose of Typing Waters. DNR. 2018. Forest Practices Water Typing. Website: https://www.dnr.wa.gov/forest-practices-water- typing. 1778.0001 Centennial Park 28 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix A â€” Methods and Tools Table A-1. Methods and tools used to prepare the report. Parameter Method or Tool Website Reference Wetland USACE 1987 http://el.erdc.usace.army.mi Environmental Laboratory. 1987. Corps of Delineation Wetland l/elpubs/pdf/wlman87.pdf Engineers Wetlands Delineation Manual. Delineation Technical Report Y-87-1, US Army Engineer Manual Waterways Experiment Station, Vicksburg, Mississippi. Regional http://www.usace.army.mil U.S. Army Corps of Engineers. 2010. Supplement to the /CECW/Documents/cecw Regional Supplement to the Corps of Engineers Core of Engineers o/reg/west_mt_finalsupp.p Wetland Delineation Manual: Western Wetland df Mountains, Valleys, and Coast Region (Version Delineation 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Manual: Western Noble. ERDC/EL TR-10-3. Vicksburg, MS: Mountains, U.S. Army Engineer Research and Valleys, and Coast Development Center. Region (Version 2.0) Wetland USFWS / http://www.fws.gov/wetlan Cowardin, L. M., V. Carter, F. C. Golet, E. T. Classification Cowardin ds/Documents/Classificatio LaRoe. 1979. Classification of wetlands and Classification n-of-Wetlands-and- deepwater habitats of the United States. System Deepwater-Habitats-of-the- Government Printing Office, Washington, D.C. United-States.pdf https://www.fgdc.gov/stan Federal Geographic Data Committee. 2013. dards/projects/wetlands/nv Classification of Wetlands and Deepwater cs-2013 Habitats of the United States. FGDC-STD-004- 2013. Second Edition. Wetlands Subcommittee, Federal Geographic Data Committee and U.S. Fish and Wildlife Service, Washington, DC. Hydrogeomorphic http://el.erdc.usace.army.mi Brinson, M. M. (1993). â€œA hydrogeomorphic Classification l/wetlands/pdfs/wrpde4.pd classification for wetlands,â€ Technical Report (HGM) System f WRP-DE-4, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. Wetland Washington State https://fortress.wa.gov/ecy Hruby, T. (2014). Washington State Wetland Rating Wetland Rating /publications/documents/1 Rating System for Western Washington: 2014 Update. System 406029.pdf (Publication #14-06-029). Olympia, WA: Washington Department of Ecology. 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Parameter Method or Tool Website Reference Wetland 2016 National Lichvar, R.W., D.L. Banks, W.N. Kirchner, and Indicator Wetland Plant List N.C. Melvin. 2016. The National Wetland Plant Status List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X https://www.fws.gov/wetla nds/documents/National- Wetland-Plant-List-2016- Wetland-Ratings.pdf Stream Department of http://www.stage.dnr.wa.go Washington Administrative Code (WAC) 222- Classification Natural Resources v/forestpractices/watertypi 16-030. DNR Water typing system. (DNR) Water ng/ Typing System Stream Determining the https://fortress.wa.gov/ecy Anderson, P.S., S. Meyer, P. Olson, and E. Delineation OHW /publications/documents/1 Stockdale. 2016. Determining the Ordinary 606029.pdf High Water Mark for Shoreline Management Act Compliance in Washington State. Publication No. 16-06-029. Final Review Draft. Shorelands and Environmental Assistance Program, Washington State Department of Ecology. Olympia, Washington. Plant Names USDA Plant http://plants.usda.gov/ Website Database 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Parameter Method or Tool Website Reference Flora of the Pacific http://www.washington.ed Hitchcock, C.L. and A. Cronquist. 1973. Flora Northwest u/uwpress/search/books/ of the Pacific Northwest. University of HITFLC.html Washington Press. Seattle, Washington. Soils Data NRCS Soil Survey http://websoilsurvey.nrcs.u Website GIS data based upon: sda.gov/app/ Debose A., and Klungland, M.W. 1983. Soil Survey of Snohomish County Area, Washington. United States Department of Agriculture, Soil Conservation Service in cooperation with Washington State Department of Natural Resources, and Washington State University, Agriculture Research Center. Washington, D.C. Snohomish http://www.wa.nrcs.usda.g Natural Resources Conservation Service. County Hydric ov/technical/soils/hydric_li 1983. Hydric Soils List: Snohomish County, Soils List sts/hydsoil-wa-653.pdf Washington. U.S. Department of Agriculture. Washington D.C. Soil Color Charts Munsellïƒ¢ Color. 2000. Munsellïƒ¢ Soil Color Charts. New Windsor, New York. Field Indicators of United States Department of Agriculture, Hydric Soils in the Natural Resources Conservation Service. 2018. https://www.nrcs.usda.gov U.S. Version 8.2 Field Indicators of Hydric Soils in the United /Internet/FSE_DOCUME States, Version 8.2. L.M. Vasilas, G.W. Hurt, NTS/nrcs142p2_053171.pd and J.F. Berkowitz (eds.). USDA, NRCS, in f cooperation with the National Technical Committee for Hydric Soils Threatened Washington http://data- Washington Natural Heritage Program and Natural Heritage wadnr.opendata.arcgis.com/ (Data published 07/19/17). Endangered, Endangered Program datasets/wnhp-current- threatened, and sensitive plants of Washington. Species element-occurrences Washington State Department of Natural Resources, Washington Natural Heritage Program, Olympia, WA Washington http://wdfw.wa.gov/hab/p Priority Habitats and Species (PHS) Priority Habitats hspage.htm Program (Data requested 06/13/18). Map of and Species priority habitats and species in project vicinity. Washington Department of Fish and Wildlife (WDFW). NOAA fisheries http://www.nwr.noaa.gov/ Website species list and ESA-Salmon- maps Listings/Salmon- Populations/Index.cfm and http://www.nmfs.noaa.gov /pr/species/ USFWS species http://www.fws.gov/westw Website lists by County afwo/se/SE_List/endanger ed_Species.asp Species of WDFW GIS Data http://wdfw.wa.gov/mappi Website Local ng/salmonscape/ Importance 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Parameter Method or Tool Website Reference Arlington https://library.municode.co AMC Chapter 20.93 Environmentally Critical Municipal Code m/wa/arlington/codes/cod Areas Report e_of_ordinances?nodeId=T Preparation IT20ZO_CH20.93ENCRA R Historic NETROnline https://www.historicaerials. Website Aerials com/viewer 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B â€” Background Information This appendix includes a USGS Topographic Map (B1); USFWS NWI map (B2); NRCS soil survey map (B3); Snohomish County wetland inventory (B4); WDFW PHS map (B5); WDFW SalmonScape map (B6); DNR stream typing map (B7); 1954 Historic Aerial Photograph (B8); and 1969 Historic Aerial Photograph (B9). 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B1 â€“ USGS Topographic Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B2 â€“ USFWS NWI Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B3 â€“ NRCS Soil Survey Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B4 â€“ Snohomish County Wetland Inventory Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B5 â€“ WDFW PHS Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B6 â€“ WDFW SalmonScape Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B7 â€“ DNR Steam Typing Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B8 â€“ 1954 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B9 â€“ 1969 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B9 â€“ 1990 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix C â€” Site Plans 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 CENTENNIAL PARK - EXISTING CONDITIONS PRELIMINARY INFORMATION ONLY Wetland Flag ! ! ! ! ! ! Drainage NOT FOR CONSTRUCTION &' Data Point Ã Ã Ã ` Ã Ã Ã ` Type F Stream SOUNDVIEW CONSULTANTS LLC ASSUMES Ã Ã Ã NO LIABILITY OR RESPONSIBILITY FOR Standard 40' Wetland BufferÃ Ã Ã Category IV Wetland CONSTRUCTION, IMPROVEMENTS, OR Delineated Wetland Edge Ã Ã Ã Site Boundary ESTIMATES BASED ON THIS PLAN SET Â¢ Estimated Wetland Edge Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã A-1Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !DP-3U! ! ! ! ! ! ! ! ! ! ! ! ! !Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! ! ! ! ! ! ! ! ! ! ! A-11 ' Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! & ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã A-2 ! A-10 Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! Wetland A Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! A-3 ! Category IV Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! A-9 ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! DP-4W Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! ' DP-6U Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã A-4 ! & Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! A-8' DP-5U ! & ! A-7 Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ' A-6! & ! A-5 ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! DP-7U! ' ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã & ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! DP-2U &' DP-1U &' ` ` Relocated ` ` Type F Stream ` ` (Estimated) ` ` ` ` ` ` ` ` ` ` ` ` ` ` 0 55 110 220 Feet ` ` ` ` ` ` ` ` ` ` ` ` ` DATE: 10/30/2018 ` ` ` ` ` ` CENTENNIAL PARK ` JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions ` 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 110 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: ` 31052300300800 FIGURE NO. www.soundviewconsultants.com 1 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` CENTENNIAL PARK - EXISTING CONDITIONS HIGHLAND VIEW DR. HIGHLAND VIEW DR. PROPERTY BOUNDARY DP3U DP6U DP4W SOURCES: DP5U DP7U WETLAND A CATEGORY IV ~21,823 SF DP11U STD. 40' BUFFER 67TH AVE. N.E. DP10U DP2U 67TH AVE NE PROPERTY BOUNDARY APROX. LOCATION OF 150' BUFFER OF RELICT STREAM CHANNEL DP1U RELICT STREAM CHANNEL FROM SURVEY DP8U CULVERT V DP9U V APROX. LOCATION OF V V V V RELOCATED STREAM RANGE 05E, W.M. V OF SECTION 23, TOWNSHIP 31N, STANDARD 100' BUFFER 1 4 BLOCKED V V V CENTENNIAL PARK 172ND ST NE CULVERT ARLINGTON, WASHINGTON 98223 172ND ST. N.E. V APROX. LOCATION OF RELOCATED PRELIMINARY 67TH AVE NE & 172ND ST NE/HWY 531 THE SW V V STREAM CHANNEL (OFF-SITE) INFORMATION ONLY V LIKELY LOCATION OF TYPE F WITH 100' BUFFER DATE: 6/27/2019 V RELOCATED STREAM NOT FOR CONSTRUCTION V V V V JOB: 1778.0001 V INTERRUPTED BUFFER V SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS V NO LIABILITY OR RESPONSIBILITY FOR V CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 1 OF 4 CENTENNIAL PARK - PROPOSED PROJECT HIGHLAND VIEW DR. HIGHLAND VIEW DR. BUILDING E.2 PROPERTY BOUNDARY6' PERIMETER 6' PERIMETER FENCING FENCING OPEN SPACE C 20' - 5" BUILDING D REAR SETBACK 30' - 1" REAR SETBACK WETLAND A CATEGORY IV BUILDINGS B, C BUILDING E SPLIT RAIL SPLIT RAIL COMM. AREA BUILDINGS B, C FENCING FENCING BLDG & D PROVIDED WITH LOFT RECREATIONAL PROPOSED VAULT Centennial Trail AREA B LOCATION. CONFIRM BUILDING K LAYOUT W/PUD POOL SOURCES: PARKING BACK ALLEY PARKING BACK ALLEY PARKING BACK ALLEY J SEC 40FT WETLAND BUFFER ZONE MAIN 25% OF BUFFER ZONE (18,948SF) TO SEC ENTRY/EXIT RESIDENTIAL FRONTAGE STREET COUNT TOWARDS OPEN SPACE PER CARPORTS SWITCH SPLIT RAIL AMC 20.52.030 (B)(6) FENCING 4,737SF OPEN SPACE E DOG RUN MINI-PARK C WETLAND BUFFER ENHANCEMENT BUILDING C J PLANTING ~18,632 SF (SEE PLANT OPEN SPACE F RESIDENTIAL FRONTAGE STREET PLAYGROUND BUILDING L SCHEDULE ON NEXT SHEET) EQUIPMENT BUILDING F SHELTER AND BUILDINGS B, C & TRELLISES D PROVIDED WITH STRUCTURES LOFT UNITS AT WETLAND A LEV 1 FOR FUTURE RETAIL OPEN CONVERSION SPACE A J OPEN COMMUNITY GREEN CATEGORY IV SPACE B BUILDING H MINI-PARK A SEC Centennial Trail ~21,823 SF WITH BUILDING J PARKING BACK ALLEY RESIDENTIAL FRONTAGE STREET STD. 40' BUFFER BUILDING B67TH AVE. N.E. BUILDING M BUILDING I BUILDING G PARKING BACK ALLEY SEC SEC J APROX. LOCATION OF 150' BUFFER 67TH AVE NE TRASH/ MONUMENT SIGN RELICT STREAM RECYCLING OF RELICT STREAM CHANNEL CHANNEL, 150' CL RESIDENTIAL FRONTAGE STREET PROPERTY BOUNDARY SECONDARY BUFFER ENTRY/EXIT J J SEC BICYCLE SURVEYED LOCATION OF RACK J 25% OF BUFFER ZONE (73,093SF) TO RELICT STREAM CHANNEL BUILDING A SEC COUNT TOWARDS OPEN SPACE PER AMC 20.52.030 (B)(6) 18,273SF OPEN SPACE E APROX. LOCATION OF 100' BUFFER BUILDING N OF RELOCATED STREAM CHANNEL BUILDING A DASHED GREY PHASE 2 LINES INDICATE Centennial Trail BUILDING O PHASE 2 SITE DEVELOPMENT AND BUILDINGS SWITCH POTENTIAL LOCATION OF PHASE 2 PHASE 2 V BUILDING P BUILDING S V RELOCATED STREAM V V V PHASE 2 V SECONDARY RANGE 05E, W.M. ENTRY/EXIT V INTERRUPTED BUFFER OF SECTION 23, TOWNSHIP 31N, 4 1 V APROX. LOCATION OF RELOCATED RELICT STREAM CHANNEL; V V CENTENNIAL PARK 172ND ST NE FISH PRESENCE UNLIKELY ARLINGTON, WASHINGTON 98223 172ND ST. N.E. V STREAM CHANNEL PRELIMINARY 67TH AVE NE & 172ND ST NE/HWY 531 THE SW V V INFORMATION ONLY V DATE: 6/27/2019 V NOT FOR CONSTRUCTION V V V V JOB: 1778.0001 V V SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS V NO LIABILITY OR RESPONSIBILITY FOR V CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 2 OF 4 CENTENNIAL PARK - NATIVE PLANT SCHEDULE TREE PLANTING DETAIL SOURCES: RANGE 05E, W.M. OF SECTION 23, TOWNSHIP 31N, 4 1 CENTENNIAL PARK PRELIMINARY ARLINGTON, WASHINGTON 98223 67TH AVE NE & 172ND ST NE/HWY 531 THE SW INFORMATION ONLY DATE: 6/27/2019 NOT FOR CONSTRUCTION JOB: 1778.0001 SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS NO LIABILITY OR RESPONSIBILITY FOR CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 3 OF 4 CENTENNIAL PARK - SITE DETAILS TREE PLANTING DETAIL SHRUB PLANTING DETAIL NOT TO SCALE NOT TO SCALE LOCATOR LATH (IF SPECIFIED) LOCATOR LATH (IF SPECIFIED) SET TOP OF ROOT MASS / ROOT BALL FLUSH SET TOP OF ROOT MASS / ROOT BALL FLUSH WITH FINISH GRADE OR SLIGHTLY ABOVE WITH FINISH GRADE OR SLIGHTLY ABOVE 2 to 3 INCH LAYER OF MULCH - KEEP MULCH 2 to 3 INCH LAYER OF MULCH - KEEP MULCH MIN. 3" AWAY FROM TRUNK OF TREE MIN. 3" AWAY FROM TRUNK OF SHRUB NOTES: NOTES: 1. PLANT SHRUBS OF THE SAME SPECIES IN 1. PLANT TREES AS INDICATED ON PLAN. AVOID GROUPS OF 3 to 9 AS APPROPRIATE, OR AS SHOWN INSTALLING PLANTS IN STRAIGHT LINES. SOURCES: ON PLAN. AVOID INSTALLING PLANTS IN STRAIGHT 2. EXCAVATE PIT TO FULL DEPTH OF ROOT MASS LINES TO ACHIEVE A NATURAL-LOOKING LAYOUT. AND 2 X ROOT MASS DIAMETER. SPREAD ROOTS TO 2. EXCAVATE PIT TO FULL DEPTH OF ROOT MASS FULL WIDTH OF CANOPY. SCARIFY SIDES OF PIT. AND 2 X ROOT MASS DIAMETER. SPREAD ROOTS TO 3. MIDWAY THROUGH PLANTING ADD AGROFORM FULL WIDTH OF CANOPY. SCARIFY SIDES OF PIT. TABLET AND WATER THOROUGHLY. 3. MIDWAY THROUGH PLANTING ADD AGROFORM 4. BACKFILL TO BE COMPACTED USING WATER ONLY. TABLET AND WATER THOROUGHLY. 5. WATER IMMEDIATELY AFTER INSTALLATION. 4. BACKFILL TO BE COMPACTED USING WATER ONLY. 5. WATER IMMEDIATELY AFTER INSTALLATION. UNDISTURBED OR UNDISTURBED OR COMPACTED SUBGRADE COMPACTED SUBGRADE LIVE STAKE PLANTING DETAIL NOT TO SCALE NOTES: 1. LIVE STAKES TO BE 1 TO 2 INCH DIAMETER 24 TO 32 INCHES LENGTH. 2. USE 1/2 INCH DIAMETER REBAR OR ROCK BAR TO MAKE PILOT HOLE. 3. INSTALL LIVE STAKES TAPER END DOWN WITH BUDS POINTED UP. 4. MINUMUM TWO BUDS ABOVE GRADE. 5. SET LIVE STAKES WITH DEAD-BLOW HAMMER. 6. WATER IMMEDIATELY AFTER INSTALLATION. STORAGE OF LIVE STAKES ALL WOODY PLANT CUTTINGS COLLECTED MORE THAN 12 HR PRIOR TO INSTALLATION, MUST BE CAREFULLY BOUND, SECURED, AND STORED OUT OF DIRECT SUNLIGHT AND SUBMERGED IN CLEAN FRESH WATER FOR A PERIOD OF UP TO TWO WEEKS. RANGE 05E, W.M. OUTDOOR TEMPERATURES MUST BE LESS OF SECTION 23, TOWNSHIP 31N,4 THAN 50 DEGREES F AND TEMPERATURE 1 INDOORS AND IN STORAGE CONTAINERS CENTENNIAL PARK MUST BE BETWEEN 34 AND 50 DEGREES F. PRELIMINARY ARLINGTON, WASHINGTON 98223 67TH AVE NE & 172ND ST NE/HWY 531 THE SW INFORMATION ONLY IF THE LIVE STAKES CANNOT BE INSTALLED DURING THE DORMANT SEASON, CUT DATE: 6/27/2019 DURING THE DORMANT SEASON AND HOLD NOT FOR CONSTRUCTION 70-80 % OF STAKE INSTALLED BELOW GRADE JOB: 1778.0001 IN COLD STORAGE AT TEMPERATURES BETWEEN 33 AND 39 DEGREES F FOR UP TO SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS NO LIABILITY OR RESPONSIBILITY FOR 2 MONTHS. CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 4 OF 4 Appendix D â€” Data Forms 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-1U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 2 Subregion (LRR): A2 Lat: 48.15232781 Long: -122.13997093 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met; only hydrophytic vegetation. Data collected in the southwest corner of the site. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 2 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 2 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 95 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 95 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 5 Remarks: Hydrophytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-1U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 13 10YR 2/1 100 - - - - SiLo Gravelly silt loam 13 - 18 10YR 2/2 95 10YR 3/6 5 CS M SaLo Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-2U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): None Slope (%): 0 Subregion (LRR): A2 Lat: 48.15270064 Long: -122.13943818 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in the western portion of the site in a field. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 3 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 67% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 1 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 1 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Plantago lanceolata 60 Yes FACU Column Totals: (A) (B) 2. Agrostis capillaris 30 Yes FAC 3. Ranunculus repens 10 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydrophytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-2U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 15 10YR 2/2 100 - - - - SaLo Gravelly sandy loam 15 - 17 10YR 2/2 95 10YR 3/6 5 CS M SaLo Gravelly sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. Roots observed from 0 to 6 inches. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrology criteria met. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-3U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Convex Slope (%): 15 Subregion (LRR): A2 Lat: 48.15356159 Long: -122.13967423 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in the northern portion of the site in a drainage. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 1 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-3U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 8 10YR 3/1 100 - - - - SiLo Silt loam 8 - 18 10YR 3/2 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/18 Applicant/Owner: Williams Investment State: WA Sampling Point: DP-4W Investigator(s): Matthew Murphy, Erin Harker Section, Township, Range: 23 / 31N / 5E Landform (hillslope, terrace, etc.): Swale Local relief (concave, convex, none): Concave Slope (%): 0 Subregion (LRR): A2 Lat: 48.153484 Long: -122.13886242 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: All three wetland criteria met. Data collected in northern portion of the site in Wetland A. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 0 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 0% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydrophytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-4W Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-16 10YR 2/1 100 - - - - SiLo Silt loam 16-18 10YR 2/1 100 - - - - Organic Muck 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: Hydric soils met through indicator A4. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 14 Saturation Present? Yes No Depth (inches): 11 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic criteria met through primary indicator A3. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-5U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 2 Subregion (LRR): A2 Lat: 48.15338214 Long: -122.13902839 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected west of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 1 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-5U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 11 10YR 2/1 100 - - - - SaLo Sandy loam 11 - 16 10YR 3/1 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-6U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Convex Slope (%): 20 Subregion (LRR): A2 Lat: 48.1535363 Long: -122.13832539 Datum: WGS 84 Soil Map Unit Name: Everett gravelly sandy loam, 8 to 15 percent slopes NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected east of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 20 Yes FAC That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 20 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-6U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 16 10YR 2/1 100 - - - - LoSa Loamy sand 16 - 18 10YR 3/1 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-7U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.15328337 Long: -122.13887554 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met; only hydrophytic vegetation. Data collected southwest of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 10 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 10 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-7U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 11 10YR 2/1 100 - - - - SiLo Silt loam 11 - 16 10YR 3/2 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 17 Saturation Present? Yes No Depth (inches): 16 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. Groundwater table is present but begins too deep to be meet A2 or A3. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 11/4/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-8U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152198 Long: -122.13838064 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria omet; only hydrophytic vegetation and hydrology. Data collected north of the relict stream channel. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Thuja plicata 20 Yes FAC That Are OBL, FACW, or FAC: 5 (A) 2. Alnus rubra 15 Yes FAC Total Number of Dominant 3. Species Across All Strata: 5 (B) 4. Percent of Dominant Species 35 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 40 Yes FAC Prevalence Index worksheet: 2. Sambucus racemosa 10 No FACU Total % Cover of: Multiply by: 3. Lonicera involucrata 10 No FAC OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 60 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 40 Yes FACW Column Totals: (A) (B) 2. Urtica dioica 15 Yes FAC 3. Equisetum arvense 10 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 65 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 35 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-8U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 6 10YR 3/2 100 - - - - SiLo Silt loam 6-13 10YR 3/2 100 - - - - SiLo Gravelly silt loam 13-15 5Y 4/1 98 10YR 3/6 2 C M SiLo Silt loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 10 Saturation Present? Yes No Depth (inches): 8 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrology criteria met through primary indicators A2 and A3; however, 3.24-inches of precipitation was recorded 2 weeks prior to the site investigation which likely caused areas a false positive hydrology indicator US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 11/4/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-9U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152120 Long: -122.13842892 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected north of the relict stream channel. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 40 Yes FAC That Are OBL, FACW, or FAC: 4 (A) 2. Thuja plicata 15 Yes FAC Total Number of Dominant 3. Species Across All Strata: 5 (B) 4. Percent of Dominant Species 55 = Total Cover That Are OBL, FACW, or FAC: 80% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 30 Yes FAC Prevalence Index worksheet: 2. Rubus spectabilis 15 Yes FAC Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 45 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Moss sp. 5 NI Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 5 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hedera helix 10 Yes FACU Hydrophytic 2. Vegetation 10 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 95 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-9U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 14 10YR 3/1 100 - - - - SaLo Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 14 Saturation Present? Yes No Depth (inches): 13 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Wetland hydrology not met. Water table too deep to meet A2 or A3, and 3.24-inches of precipitation was recorded 2 weeks prior to the site investigation. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 5/7/2019 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-10U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152830 Long: -122.13840503 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in eastern-central portion of the property in a forested area. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 70 Yes FAC That Are OBL, FACW, or FAC: 3 (A) 2. Total Number of Dominant 3. Species Across All Strata: 3 (B) 4. Percent of Dominant Species 70 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 10 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 10 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 80 Yes FACW Column Totals: (A) (B) 2. Equisetum arvense 20 No FAC 3. Juncus sp.* 3 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 103 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum -3 Remarks: Hydropytic vegetation criteria met through dominance test. *Could not be identified to species level, assumed FAC for scoring purposes. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-10U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 13 10YR 2/2 100 - - - - SaLo Gravelly sandy loam 13-16 10YR 3/2 60 - - - - SaLo Sandy loam, dual matrix 10YR 2/2 40 - - - - SaLo Sandy loam, dual matrix 16-20 10YR 2/1 100 - - - - SiLo Silt loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 18 Saturation Present? Yes No Depth (inches): 14 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Wetland hydrology not met; saturation and water table too deep to meet A2 or A3. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 5/7/2019 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-11U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.153032 Long: -122.13839143 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in eastern-central portion of the property in a forested area. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 75 Yes FAC That Are OBL, FACW, or FAC: 3 (A) 2. Total Number of Dominant 3. Species Across All Strata: 3 (B) 4. Percent of Dominant Species 75 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Equisetum arvense 30 Yes FAC Column Totals: (A) (B) 2. Phalaris arundinacea 25 Yes FACW 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 55 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 40 Remarks: Mosses 5% of herbaceous stratum. Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-11U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 8 10YR 2/2 100 - - - - SaLo Sandy loam 8-15 10YR 4/4 60 - - - - SaLo Gravelly sandy loam, dual matrix 10YR 3/2 40 - - - - SaLo Gravelly sandy loam, dual matrix 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Wetland hydrology not met. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 Appendix E â€” Wetland Rating Forms 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Wetland name or number ______ A RATING SUMMARY â€“ Western Washington Name of wetland (or ID #): _________________________________ Date of site visit: _____ A 10/12/18 Rated by____________________________ Trained by Ecology?__ Yes ___No Date of training______ Erin Harker, Jon Pickett âœ” HGM Class used for rating_________________ Depressional Wetland has multiple HGM classes?___Y ____Nâœ” NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map ______________________________________ OVERALL WETLAND CATEGORY ____ IV (based on functions___ or special characteristics___)âœ” 1. Category of wetland based on FUNCTIONS _______Category I â€“ Total score = 23 - 27 Score for each _______Category II â€“ Total score = 20 - 22 function based on three _______Category III â€“ Total score = 16 - 19 ratings _______Category IV â€“ Total score = 9 - 15 (order of ratings is not important) FUNCTION Improving Hydrologic Habitat Water Quality 9 = H,H,H Circle the appropriate ratings 8 = H,H,M Site Potential L L L 7 = H,H,L Landscape Potential L L L 7 = H,M,M Value H L L TOTAL 6 = H,M,L 6 = M,M,M Score Based on 5 3 3 11 5 = H,L,L Ratings 5 = M,M,L 4 = M,L,L 3 = L,L,L 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above N/A Wetland Rating System for Western WA: 2014 Update 1 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 Hydroperiods D 1.4, H 1.2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 Map of the contributing basin D 4.3, D 5.3 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Ponded depressions R 1.1 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 Width of unit vs. width of stream (can be added to another figure) R 4.1 Map of the contributing basin R 2.2, R 2.3, R 5.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 Plant cover of dense, rigid trees, shrubs, and herbaceous plants S 4.1 (can be added to figure above) Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 Wetland Rating System for Western WA: 2014 Update 2 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A HGM Classification of Wetlands in Western Washington For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides except during floods? NO â€“ go to 2 YES â€“ the wetland class is Tidal Fringe â€“ go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO â€“ Saltwater Tidal Fringe (Estuarine) YES â€“ Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. NO â€“ go to 3 YES â€“ The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ___The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ___At least 30% of the open water area is deeper than 6.6 ft (2 m). NO â€“ go to 4 YES â€“ The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ____The wetland is on a slope (slope can be very gradual), ____The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ____The water leaves the wetland without being impounded. NO â€“ go to 5 YES â€“ The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ____The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ____The overbank flooding occurs at least once every 2 years. Wetland Rating System for Western WA: 2014 Update 3 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A NO â€“ go to 6 YES â€“ The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. NO â€“ go to 7 YES â€“ The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. NO â€“ go to 8 YES â€“ The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit HGM class to being rated use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream Depressional within boundary of depression Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other Treat as class of freshwater wetland ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating System for Western WA: 2014 Update 4 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A DEPRESSIONAL AND FLATS WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality D 1.0. Does the site have the potential to improve water quality? D 1.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet). points = 3 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet. 1 points = 2 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 1 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch. points = 1 D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions).Yes = 4 No = 0 0 D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or Forested Cowardin classes): Wetland has persistent, ungrazed, plants > 95% of area points = 5 Wetland has persistent, ungrazed, plants > Â½ of area points = 3 3 Wetland has persistent, ungrazed plants > 1/ of area points = 1 10 Wetland has persistent, ungrazed plants <1/ of area points = 0 10 D 1.4. Characteristics of seasonal ponding or inundation: This is the area that is ponded for at least 2 months. See description in manual. Area seasonally ponded is > Â½ total area of wetland points = 4 0 Area seasonally ponded is > Â¼ total area of wetland points = 2 Area seasonally ponded is < Â¼ total area of wetland points = 0 Total for D 1 Add the points in the boxes above 4 Rating of Site Potential If score is: 12-16 = H 6-11 = M 0-5 = L Record the rating on the first page D 2.0. Does the landscape have the potential to support the water quality function of the site? D 2.1. Does the wetland unit receive stormwater discharges? Yes = 1 No = 0 0 D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 0 D 2.3. Are there septic systems within 250 ft of the wetland? Yes = 1 No = 0 0 D 2.4. Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1-D 2.3? 0 Source_______________ Yes = 1 No = 0 Total for D 2 Add the points in the boxes above 0 Rating of Landscape Potential If score is: 3 or 4 = H 1 or 2 = M 0 = L Record the rating on the first page D 3.0. Is the water quality improvement provided by the site valuable to society? D 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 1 303(d) list? Yes = 1 No = 0 D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list? Yes = 1 No = 0 1 D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer YES 2 if there is a TMDL for the basin in which the unit is found)? Yes = 2 No = 0 Total for D 3 Add the points in the boxes above 4 Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page NOTES and FIELD OBSERVATIONS: Wetland Rating System for Western WA: 2014 Update 5 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A DEPRESSIONAL AND FLATS WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation D 4.0. Does the site have the potential to reduce flooding and erosion? D 4.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression with no surface water leaving it (no outlet) points = 4 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outletpoints = 2 0 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0 D 4.2. Depth of storage during wet periods: Estimate the height of ponding above the bottom of the outlet. For wetlands with no outlet, measure from the surface of permanent water or if dry, the deepest part. Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 0 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 The wetland is a â€œheadwaterâ€ wetland points = 3 Wetland is flat but has small depressions on the surface that trap water points = 1 Marks of ponding less than 0.5 ft (6 in) points = 0 D 4.3. Contribution of the wetland to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of the unit points = 5 3 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 times the area of the unit points = 0 Entire wetland is in the Flats class points = 5 Total for D 4 Add the points in the boxes above 3 Rating of Site Potential If score is: 12-16 = H 6-11 = M 0-5 = L Record the rating on the first page D 5.0. Does the landscape have the potential to support hydrologic functions of the site? D 5.1. Does the wetland receive stormwater discharges? Yes = 1 No = 0 0 D 5.2. Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes = 1 No = 0 0 D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at 0 >1 residence/ac, urban, commercial, agriculture, etc.)? Yes = 1 No = 0 Total for D 5 Add the points in the boxes above 0 Rating of Landscape Potential If score is: 3 = H 1 or 2 = M 0 = L Record the rating on the first page D 6.0. Are the hydrologic functions provided by the site valuable to society? D 6.1. The unit is in a landscape that has flooding problems. Choose the description that best matches conditions around the wetland unit being rated. Do not add points. Choose the highest score if more than one condition is met. The wetland captures surface water that would otherwise flow down-gradient into areas where flooding has damaged human or natural resources (e.g., houses or salmon redds): ï‚· Flooding occurs in a sub-basin that is immediately down-gradient of unit. points = 2 ï‚· Surface flooding problems are in a sub-basin farther down-gradient. points = 1 0 Flooding from groundwater is an issue in the sub-basin. points = 1 The existing or potential outflow from the wetland is so constrained by human or natural conditions that the water stored by the wetland cannot reach areas that flood. Explain why __________________Wetland discharges into ditches and stormwater featurespoints = 0 There are no problems with flooding downstream of the wetland. points = 0 D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? 0 Yes = 2 No = 0 Total for D 6 Add the points in the boxes above 0 Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page Wetland Rating System for Western WA: 2014 Update 6 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - Indicators that site functions to provide important habitat H 1.0. Does the site have the potential to provide habitat? H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be combined for each class to meet the threshold of Â¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ____Aquatic bed 4 structures or more: points = 4 ____Emergent 3 structures: points = 2 ____Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points = 1 1 ____Forested (areas where trees have > 30% cover) 1 structure: points = 0 If the unit has a Forested class, check if: ____The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the Forested polygon H 1.2. Hydroperiods Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or Â¼ ac to count (see text for descriptions of hydroperiods). ____Permanently flooded or inundated 4 or more types present: points = 3 ____Seasonally flooded or inundated 3 types present: points = 2 ____Occasionally flooded or inundated 2 types present: points = 1 1 ____Saturated only 1 type present: points = 0 ____Permanently flowing stream or river in, or adjacent to, the wetland ____Seasonally flowing stream in, or adjacent to, the wetland ____Lake Fringe wetland 2 points ____Freshwater tidal wetland 2 points H 1.3. Richness of plant species Count the number of plant species in the wetland that cover at least 10 ft2. Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle 1 If you counted: > 19 species points = 2 5 - 19 species points = 1 < 5 species points = 0 H 1.4. Interspersion of habitats Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none. If you have four or more plant classes or three classes and open water, the rating is always high. 0 None = 0 points Low = 1 point Moderate = 2 points All three diagrams in this row are HIGH = 3points Wetland Rating System for Western WA: 2014 Update 13 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ____Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ____Standing snags (dbh > 4 in) within the wetland ____Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) 1 ____Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ____At least Â¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ____Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) Total for H 1 Add the points in the boxes above 4 Rating of Site Potential If score is: 15-18 = H 7-14 = M 0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: 0.88 % undisturbed habitat + [(% moderate and low intensity land uses) 3.10 /2] = _______%2.43 If total accessible habitat is: > 1/ (33.3%) of 1 km Polygon points = 3 3 0 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: 2.51 % undisturbed habitat + [(% moderate and low intensity land uses) 34.89 /2] = _______%19.955 Undisturbed habitat > 50% of Polygon points = 3 1 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) -2 â‰¤ 50% of 1 km Polygon is high intensity points = 0 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: 4-6 = H 1-3 = M < 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ï‚¾ It has 3 or more priority habitats within 100 m (see next page) ï‚¾ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ï‚¾ It is mapped as a location for an individual WDFW priority species 0 ï‚¾ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ï‚¾ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 Rating of Value If score is: 2 = H 1 = M 0 = L Record the rating on the first page Wetland Rating System for Western WA: 2014 Update 14 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ï‚¾ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ï‚¾ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ï‚¾ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ï‚¾ Old-growth/Mature forests: Old-growth west of Cascade crest â€“ Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests â€“ Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ï‚¾ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 â€“ see web link above). ï‚¾ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ï‚¾ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 â€“ see web link above). ï‚¾ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ï‚¾ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report â€“ see web link on previous page). ï‚¾ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ï‚¾ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ï‚¾ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ï‚¾ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland Rating System for Western WA: 2014 Update 15 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Category Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ï‚¾ The dominant water regime is tidal, ï‚¾ Vegetated, and ï‚¾ With a salinity greater than 0.5 ppt Yes â€“Go to SC 1.1 No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? Yes = Category I No - Go to SC 1.2 SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ï‚¾ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ï‚¾ At least Â¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ï‚¾ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Yes = Category I No = Category II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? Yes â€“ Go to SC 2.2 No â€“ Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? Yes = Category I No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf Yes â€“ Contact WNHP/WDNR and go to SC 2.4 No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? Yes = Category I No = Not a WHCV SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? Yes â€“ Go to SC 3.3 No â€“ Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? Yes â€“ Go to SC 3.3 No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? Yes = Is a Category I bog No â€“ Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? Yes = Is a Category I bog No = Is not a bog Wetland Rating System for Western WA: 2014 Update 16 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlifeâ€™s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ï‚¾ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ï‚¾ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). Yes = Category I No = Not a forested wetland for this section SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ï‚¾ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ï‚¾ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) Yes â€“ Go to SC 5.1 No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ï‚¾ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ï‚¾ At least Â¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ï‚¾ The wetland is larger than 1/ ac (4350 ft2) 10 Yes = Category I No = Category II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ï‚¾ Long Beach Peninsula: Lands west of SR 103 ï‚¾ Grayland-Westport: Lands west of SR 105 ï‚¾ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 Yes â€“ Go to SC 6.1 No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? Yes = Category I No â€“ Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? Yes = Category II No â€“ Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? Yes = Category III No = Category IV Category of wetland based on Special Characteristics If you answered No for all types, enter â€œNot Applicableâ€ on Summary Form Wetland Rating System for Western WA: 2014 Update 17 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A This page left blank intentionally Wetland Rating System for Western WA: 2014 Update 18 Rating Form â€“ Effective January 1, 2015 Appendix F â€” Wetland Rating Maps 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 CENTENNIAL PARK - WETLAND RATING MAP Cowardin Map 330' Boundary Emergent Â¢ Scrub-Shrub Site Boundary 0 75 150 300 Feet DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 125 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 51 CENTENNIAL PARK - WETLAND RATING MAP Hydroperiod Map 150' Boundary Saturated Â¢ Seasonally Flooded Site Boundary 0 37.5 75 150 Feet DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 75 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 52 CENTENNIAL PARK - WETLAND RATING MAP Contributing Basin Map Ã Ã Ã Site Boundary Ã Ã Ã Ã Ã Ã Ã Wetland Ã Ã Ã Ã Contributing Basin Â¢ Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Old Stream Channel 0 125 250 500Feet (Relocated South of 172nd Street) D.4.0 D.4.3 Area of Contributing Basin (SF) 1,211,949 Area of Wetland A (SF) 23,130 Percent of Wetland A within Contributing Basin 1.908% D.5.0 D.5.3 Area of Contributing Basin 1,211,949 Area of Intensive Human Land Uses 30,464 Percent of Intensive Human Land Use within Contributing Basin 3% DATE:1/3/2019 CENTENNIAL PARK JOB:1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview ConsultantsLLC ARLINGTON, WA 98223 BY:DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 250 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 53 CENTENNIAL PARK - WETLAND RATING MAP Habitat Map Ã Ã Ã Ã Ã Ã Ã Ã Site Boundary Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Wetland Ã Ã Ã Ã High Intensity Â¢ Moderate and Low Intensity Relatively Undisturbed Ã Ã Ã Ã Ã Ã Ã Ã 0 650 1,300 2,600 Feet H.2.0 Wetland A H.2.1 Abutting Undisturbed Habitat 0.88% Abutting Moderate & Low Intensity Land Uses 3.10% Accessible Habitat 2.43% H.2.2 Undisturbed Habitat 2.51% Moderate & Low Intensity Land Uses 34.89% Undisturbed Habitat in 1 KM Polygon 19.96% H.2.3 High Intensity Land Use in 1 KM Polygon 62.60% DATE:1/3/2019 CENTENNIAL PARK JOB:1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview ConsultantsLLC ARLINGTON, WA 98223 BY:DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 1,300 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 54 CENTENNIAL PARK - WETLAND RATING MAP SITE Â¢ 303d Map Sub Basin Category 4A Assessed Waters Category 5 Assessed Waters DNR Hydrology 0 1 2 4 Miles LISTING ID CATEGORY PARAMETER MEDIA WATERBODY WATERBODY TYPE 47512 5 Dissolved Oxygen Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 45266 4A Bacteria Water QUILCEDA CREEK, W.F. Rivers/Streams 7299 5 Dissolved Oxygen Water QUILCEDA CREEK, W.F. Rivers/Streams 47492 5 Dissolved Oxygen Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK) Rivers/Streams 46286 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7307 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 71215 5 pH Water QUILCEDA CREEK, W.F. Rivers/Streams 71213 5 pH Water QUILCEDA CREEK, W.F. Rivers/Streams 7306 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7304 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 71212 5 pH Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 71221 5 pH Water UNNAMED DITCH (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 7305 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7302 5 Dissolved Oxygen Water QUILCEDA CREEK Rivers/Streams 47506 5 Dissolved Oxygen Water UNNAMED DITCH (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 7298 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 47502 5 Dissolved Oxygen Water QUILCEDA CREEK, W.F. Rivers/Streams 9806 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 74184 4A Bacteria Water QUILCEDA CREEK, W.F. Rivers/Streams DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 2 mi Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 55 Appendix G â€” Edgecomb Creek Relocation Documentation 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix H â€” Qualifications All field inspections, jurisdictional wetland boundary delineations, habitat assessments, and supporting documentation, including this Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan prepared for the Centennial Park project site were prepared by, or under the direction of, Jon Pickett of SVC. In addition, the site investigations were performed by Erin Harker, and report preparation was completed by Rachael Hyland. Jon Pickett Senior Environmental Planner Professional Experience: 9 years Jon Pickett is a Senior Scientist/Environmental Planner with diverse professional experience in habitat development as a Regional Biologist and Environmental Project Manager, with an emphasis in wetland restoration and enhancement. Jon has extensive experience successfully planning, developing, securing funding, managing and implementing numerous large-scale wetland habitat projects aimed at restoring the biological and physical functions of wetlands throughout Californiaâ€™s Central Valley and Southern California. During this time he managed a 2,200 acre private wetland and upland habitat complex as a public trust resource for conservation and consumptive use. He worked to ensure projects were designed and implemented to achieve habitat restoration goals, including reclamation of wetland and floodplain habitats, reintroduction of aquatic complexity and habitat, and reestablishment of riparian corridor. Jon has worked with Federal and State agencies and private entities on land acquisitions for conservational habitat and public use, including prioritizing acquisitions relative to value and opportunity and funding. In addition, Jon has experience in regulatory coordination to ensure projects operated in compliance with Federal, State and local environmental regulations, preparing permit documentation, coordinating with all pertinent agencies and stakeholders, and developing and maintaining appropriate permitting timelines to ensure timely approvals. He also oversaw earthwork construction components and revegetation efforts, as well as post-project monitoring, with an emphasis in native vegetation establishment and natural channel morphology. Jon earned a Bachelor of Science degree in Natural Resource Sciences from Washington State University and Bachelor of Science Minor in Forestry from Washington State University. He has been formally trained in the use of the Washington State Wetland Rating System, USACE 40-hour wetland delineation training, Determination of Ordinary High Water Mark, Using Field Indicators for Hydric Soils, and the Washington State Department of Ecology Credit and Debit Method. Erin Harker Staff Wetland Scientist Professional Experience: 3 years Erin Harker is a Staff Wetland Scientist with diverse ecological experience in both field and laboratory settings in the Pacific Northwest. She has gained hands-on experience involving research on water quality, salmon runs, amphibian surveys, restoration project performance, and marine mammal hydro- acoustics. Erin is proficient in collecting and analyzing environmental data; riparian restoration and wetland mitigation monitoring principles and techniques; analyzing local, state, and federal 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 environmental code and regulations; and technical writing. Erin has additional experience engaging students and volunteers in a suite of environmental curriculums. She currently performs wetland, ordinary high water, and forensic delineations, in addition to assisting clients through the various stages of land use planning by conducting environmental code analysis; preparing environmental assessments, mitigation reports, and biological evaluations; and completing permit applications. Erin graduated from Western Washington University with a Bachelor of Science degree in Environmental Science with a Marine Ecology focus. She has received has received 40-hour Wetland Delineation Training through the USACE and formal training through the WSDOE and Coastal Training Program in conducting forage fish surveys; using the credit-debit system for estimating wetland mitigation needs, determining the ordinary high water mark; Puget Sound coastal processes; conducting eelgrass delineations; using the 2014 wetland rating system; using field indicators for hydric soils; and administering permits in the shoreline jurisdiction. Rachael Hyland Environmental Scientist Professional Experience: 5 years Rachael Hyland is a wetland profession in training (WPIT) through the Society of Wetland Scientists and a Certified Associated Ecologist through the Ecological Society of America. Rachael has a background in wetland and ecological habitat assessments in various states, most notably Connecticut, Massachusetts, Rhode Island, and Ohio. She has experience in assessing tidal, stream, and wetland systems, reporting on biological evaluations, permitting, and site assessments. She also has extensive knowledge of bats and White Nose Syndrome (Pseudogymnoascus destructans), a fungal disease attacking bats, which was recently documented in Washington. Rachael earned a Bachelor of Science degree in Ecology and Evolutionary Biology from the University of Connecticut, with additional ecology studies at the graduate level. Rachael has completed Basic Wetland Delineator Training with the Institute for Wetland Education and Environmental Research, received 40-hour USACE wetland delineation training, and received formal training from the Washington State Department of Ecology in Selecting Wetland Mitigation Sites Using a Watershed Approach. 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 0 0 LEGEND + 6 22+00 PROPOSED STREAM ALIGNMENT 6+00 M 145 A EXISTING CULVERT T EXISTING STREAM CENTERLINE C TO BE ABANDONED H S L EXISTING INDEX CONTOUR E I E N E EXISTING INTERMEDIATE CONTOUR S H S E T E A LIMITS OF EXCAVATION T E H C LIMITS OF FILL Y S 2 2 4 + EXISTING EDGE OF PAVEMENT SR 531 1 5 . 7 EXISTING CULVERT 1 150 145 10:1 24+00 LARGE WOODY MATERIAL TYPE B (TYP) (SEE NOTE 2) 0:1 1 2 : 1 % 1 0 : 2 FILL OLD CREEKBED (SEE NOTE 1) 1 1 1 0 0% 0:1 : : 2 1 1 1 145 : 0:1 0 2 0 10:1 + 1 0 0 5 :1 % 2 :1 2:1 1 0 : 1 LARGE WOODY MATERIAL TYPE D (TYP) 0 1 2 0 0 : (SEE NOTE 2) :1 1 + K 2 E 2 E % R 155 2:1 2 23 0 C :1 +0 B 2:1 0 M 0% CO 1 % DGE : 0 E 1 0 0 1 :1 1 : 10:1 2 10 :1 2:1 0 % 1 2 : 1 1 : 0 + 2 1 0 :1 2:1 0 2 LARGE WOODY MATERIAL TYPE A (TYP) (SEE NOTE 2) E C 140 L IN E 140 BEGIN CHANNEL GRADING EC 20+00.00 150 145 NOTES: 0 10 20 1. FILL OLD CREEKBED. AT THE NORTH END START AT ELEVATION 142.1â€™ . SCALE IN FEET TAPER TO MATCH NEW EDGE OF STREAMBED. TAPER TO PREVENT WATER FROM FLOWING INTO OLD STREAMBED. LARGE WOODY MATERIAL TYPE C (TYP) 2. SEE SHEETS HYD2 AND HYD3 FOR LARGE WOODY MATERIAL DETAILS. (SEE NOTE 2) PRELIMINARY - NOT FOR CONSTRUCTION FILE NAME X:\AA_NewX\Projects\SR531\MP008.71_XL0000 Edgecomb Creek\CAD\Sheet_Files\Edgecomb Creek Sheets.dgn Plot 1 TIME 2:25:44 PM REGION STATE FED.AID PROJ.NO. PLAN REF NO NO. SR 531 DATE 7/18/2016 HYS1 WASH EDGECOMB CREEK PLOTTED BY lapoinc DESIGNED BY L. ASSINK JOB NUMBER Washington State FISH PASSAGE SHEET ENTERED BY C. LAPOINTE 1 CHECKED BY J. HIELMAN CONTRACT NO. LOCATION NO. Department of Transportation OF 7 PROJ. ENGR. J.CHI STREAM PLAN DATE DATE SHEETS REGIONAL ADM. L. ENG REVISION DATE BY P.E. STAMP BOX P.E. STAMP BOX LEGEND 22+00 PROPOSED STREAM ALIGNMENT WING WALL EXISTING STRUCTURE 155 EXISTING WEIR 160 LIMITS OF EXCAVATION LIMITS OF FILL EXISTING EDGE OF PAVEMENT EXISTING CULVERT 1 53 SR EXISTING INDEX CONTOUR 155 EXISTING INTERMEDIATE CONTOUR 0% EXISTING STUMP EXISTING CULVERT 150 TO BE ABANDONED 1 : 00 0 2 6+ 1 :1 2 1 2:1 : 0 155 1 0 % 155 150 0 PRECAST CONCRETE BOX % 2:1 16â€™ WIDE X 6â€™ HIGH 2 155 : 1 10:1 2:1 E IN L 1 0 EC : 1 1 25+00 0 : 1 1 2: 10:1 END CHANNEL GRADING EC 26+65.16 M EK 160 A 155 E T CR C 2 H B : :1 1 :1 2 M S 10 O L E C I E E N G E D S E H S E T A 1 E 0 T : E 1 0:1 165 H C 1 :1 1 Y 0 2 S 2 : 2 1 4 1 : + 1 1 5 . 7 1 170 2 165 : 1 160 175 170 180 0 10 20 SCALE IN FEET NOTES: 1. CUT/FILL LINE IS FOR ILLUSTRATION ONLY. FINAL LIMITS OF EXCAVATION TO BE DETERMINED BE STRUCTURE TYPE AND LOCATION. PRELIMINARY - NOT FOR CONSTRUCTION FILE NAME X:\AA_NewX\Projects\SR531\MP008.71_XL0000 Edgecomb Creek\CAD\Sheet_Files\Edgecomb Creek Sheets.dgn Plot 2 TIME 2:25:44 PM REGION STATE FED.AID PROJ.NO. PLAN REF NO NO. SR 531 DATE 7/18/2016 HYS2 WASH EDGECOMB CREEK PLOTTED BY lapoinc DESIGNED BY L. ASSINK JOB NUMBER Washington State FISH PASSAGE SHEET ENTERED BY C. LAPOINTE 2 CHECKED BY J. HIELMAN CONTRACT NO. LOCATION NO. Department of Transportation OF 7 PROJ. ENGR. J.CHI STREAM PLAN DATE DATE SHEETS REGIONAL ADM. L. ENG REVISION DATE BY P.E. STAMP BOX P.E. STAMP BOX Centennial Park 18386.20 October 21, 2019 Drainage Report Section VII, Page 1 Section VII â€“ Other Permits Section VII Summary Narrative This project will require the following additional permits/approvals beyond those required by the City of Arlington. 1. Construction Stormwater General Permit by the Washington State Department of Ecology. 2. The potentially unregulated channel needs to be approved as unregulated by the Department of Natural Resources prior to any work occurring within the buffer or channel. The current proposal does not include this work. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section VIII, Page 1 Section VIII â€“ Operation and Maintenance Manual Section VIII Summary Narrative The Operation and Maintenance Manual is a standalone document that will be given to the property manager following the construction of the project. The contractor will be responsible for the maintenance and operation of all stormwater structures and BMPs requiring maintenance during construction and, after construction, responsibility will pass to the property management company. The manual shall be kept in the offices of the proposed buildings. Upon request by the City, it shall be made available for their inspection. It is generally expected that few to none of these defects will be present upon the yearly inspection of each facility. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section VIII, Page 2 Centennial Park 67th Ave and 172nd Street NE Arlington, WA 98223 OPERATION AND MAINTENANCE MANUAL Date: October 2019 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section VIII, Page 3 Operation and Maintenance Manual This Operation and Maintenance Manual has been created for Centennial Park, a 8.81 ac site located at 67th Ave and 172nd Street NE Arlington, WA 98223. The proposed stormwater management system consists of catch basins, water quality systems, and conveyance pipes that collect runoff from roofs, parking, and new landscaping, and route them to gravel infiltration trenches under parking lots throughout the site. Included in this Operation and Maintenance Manual is an 11â€ x 17â€ grading and drainage plan sheet showing the locations of the infiltration system and catch basins. Please note that this map is generated during the design phase and may not reflect all changes made in permitting and construction. CG Engineering may be contacted for an updated copy of this map once the as-built drawings are completed for the site. Maintenance sheets from the 2014 Stormwater Management Manual for Western Washington are included for the following facilities: Catch Basins: Concrete structures with steel grates that collect stormwater runoff from the site and act as junctions for storm conveyance pipes. See â€œNo. 5â€ for maintenance. Gravel Infiltration Trench: Subsurface trenches backfilled with a coarse stone aggregate, allowing for temporary storage of stormwater runoff in the voids of the aggregate. Runoff is distributed through the trench with a perforated pipe and gradually infiltrates into the surrounding soil. Vegetation Management: Landscaping can include grading, soil transfer, vegetation removal, pesticide and fertilizer applications, and watering. Stormwater contaminants include toxic organic compounds, heavy metals, oils, total suspended solids, coliform bacteria, fertilizers, and pesticides. Water Quality System: Two Oldcastle underground BioPod Biofilters have been chosen and sized as the water quality system to treat stormwater runoff from pollution-generating hard within the driveway entrances, which bypass the infiltration. The project site is required to treat runoff to an â€œEnhanced Treatmentâ€ standard per the 2014 Washington State Department of Ecology Stormwater Management Manual. Facilities shall be inspected for defects listed in the following facility sheets. Most maintenance tasks are generally reactionary to a defect being found, rather than a matter of constant upkeep. It is generally expected that few to none of these defects will be present upon the yearly inspection of each facility. The facility sheets list the potential conditions warranting maintenance and the expected result following any maintenance. Several engineerâ€™s notes for specific tasks are provided within the facility sheets. Unless otherwise noted on the facility sheets the maintenance tasks should be performed on an â€œas neededâ€ basis: (a) When the described defect is visible to whomever performs the yearly inspection, (b) Should any defect become apparent between inspections. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section VIII, Page 4 SAMPLE ACTIVITY LOG DATE FACILITY MAINTENANCE PERFORMED RESULTS / NOTES 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com No. 5 â€“ Catch Basins Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is performed General Trash & Trash or debris which is located immediately No Trash or debris located Debris in front of the catch basin opening or is immediately in front of blocking inletting capacity of the basin by catch basin or on grate more than 10%. opening. Trash or debris (in the basin) that exceeds 60 No trash or debris in the percent of the sump depth as measured from catch basin. the bottom of basin to invert of the lowest pipe into or out of the basin, but in no case less than a minimum of six inches clearance from the debris surface to the invert of the lowest pipe. Trash or debris in any inlet or outlet pipe Inlet and outlet pipes free blocking more than 1/3 of its height. of trash or debris. Dead animals or vegetation that could No dead animals or generate odors that could cause complaints vegetation present within or dangerous gases (e.g., methane). the catch basin. Sediment Sediment (in the basin) that exceeds 60 No sediment in the catch percent of the sump depth as measured from basin the bottom of basin to invert of the lowest pipe into or out of the basin, but in no case less than a minimum of 6 inches clearance from the sediment surface to the invert of the lowest pipe. Structure Top slab has holes larger than 2 square Top slab is free of holes Damage to inches or cracks wider than 1/4 inch and cracks. Frame and/or (Intent is to make sure no material is running Top Slab into basin). Frame not sitting flush on top slab, i.e., Frame is sitting flush on separation of more than 3/4 inch of the frame the riser rings or top slab from the top slab. Frame not securely and firmly attached. attached Fractures or Maintenance person judges that structure is Basin replaced or repaired Cracks in unsound. to design standards. Basin Walls/ Bottom Grout fillet has separated or cracked wider Pipe is regrouted and than 1/2 inch and longer than 1 foot at the secure at basin wall. joint of any inlet/outlet pipe or any evidence of soil particles entering catch basin through cracks. Settlement/ If failure of basin has created a safety, Basin replaced or repaired Misalignment function, or design problem. to design standards. Vegetation Vegetation growing across and blocking more No vegetation blocking than 10% of the basin opening. opening to basin. Vegetation growing in inlet/outlet pipe joints No vegetation or root that is more than six inches tall and less than growth present. six inches apart. Contamination See "Detention Ponds" (No. 1). No pollution present. and Pollution Volume V â€“ Runoff Treatment BMPs â€“ December 2014 4-38 No. 5 â€“ Catch Basins Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is performed Catch Basin Cover Not in Cover is missing or only partially in place. Catch basin cover is Cover Place Any open catch basin requires maintenance. closed Locking Mechanism cannot be opened by one Mechanism opens with Mechanism maintenance person with proper tools. Bolts proper tools. Not Working into frame have less than 1/2 inch of thread. Cover Difficult One maintenance person cannot remove lid Cover can be removed by to Remove after applying normal lifting pressure. one maintenance person. (Intent is keep cover from sealing off access to maintenance.) Ladder Ladder Rungs Ladder is unsafe due to missing rungs, not Ladder meets design Unsafe securely attached to basin wall, standards and allows misalignment, rust, cracks, or sharp edges. maintenance person safe access. Metal Grates Grate opening Grate with opening wider than 7/8 inch. Grate opening meets (If Applicable) Unsafe design standards. Trash and Trash and debris that is blocking more than Grate free of trash and Debris 20% of grate surface inletting capacity. debris. Damaged or Grate missing or broken member(s) of the Grate is in place and Missing. grate. meets design standards. No. 6 â€“ Debris Barriers (e.g., Trash Racks) Maintenance Defect Condition When Maintenance is Results Expected When Components Needed Maintenance is Performed General Trash and Trash or debris that is plugging more Barrier cleared to design flow Debris than 20% of the openings in the barrier. capacity. Metal Damaged/ Bars are bent out of shape more than 3 Bars in place with no bends more Missing inches. than 3/4 inch. Bars. Bars are missing or entire barrier Bars in place according to design. missing. Bars are loose and rust is causing 50% Barrier replaced or repaired to deterioration to any part of barrier. design standards. Inlet/Outlet Debris barrier missing or not attached to Barrier firmly attached to pipe Pipe pipe Volume V â€“ Runoff Treatment BMPs â€“ December 2014 4-39 Applicable Operational BMPs: Recommended Additional Operational BMPs S411 BMPs for Landscaping and Lawn/ Vegetation Management Description of Pollutant Sources: Volume IV - Source Control BMPs â€“ December 2014 2-21 Pollutant Control Approach: Applicable Operational BMPs for Landscaping: Recommended Additional Operational BMPs for Landscaping: Volume IV - Source Control BMPs â€“ December 2014 2-22 Applicable Operational BMPs for the Use of Pesticides: Applicable Operational BMPs for Vegetation Management Volume IV - Source Control BMPs â€“ December 2014 2-23 Recommended Additional Operational BMPs for the use of pesticides: Installing an amended soil/landscape system can preserve both the plant system and the soil system more effectively. This type of approach provides a soil/landscape system with adequate depth, permeability, and organic matter to sustain itself and continue working as an effective stormwater infiltration system and a sustainable nutrient cycle. For more information, contact the Washington State University (WSU) Extension Home-Assist Program, (253) 445-4556, or Bio-Integral Resource Center (BIRC), P.O. Box 7414, Berkeley, CA.94707, or EPA to Volume IV - Source Control BMPs â€“ December 2014 2-24 obtain a publication entitled â€œSuspended, Canceled, and Restricted Pesticidesâ€ which lists all restricted pesticides and the specific uses that are allowed. Applicable Operational BMPs for Vegetation Management: Temporary and Permanent Seeding MulchingPlastic CoveringSodding Volume IV - Source Control BMPs â€“ December 2014 2-25 Irrigation: Fertilizer Management: . Volume IV - Source Control BMPs â€“ December 2014 2-26 Integrated Pest Management S412 BMPs for Loading and Unloading Areas for Liquid or Solid Material Description of Pollutant Sources: Pollutant Control Approach: Applicable Operational BMPs: At All Loading/ Unloading Areas: Volume IV - Source Control BMPs â€“ December 2014 2-27 BIOPODTM SYSTEM WITH STORMMIXâ„¢ MEDIA Inspection and Maintenance Guide INSPECTION AND MAINTENANCE GUIDE BioPodâ„¢ Biofilter with StormMixâ„¢ Biofiltration Media Description The BioPodâ„¢ Biofilter System (BioPod) is a stormwater biofiltration treatment system used to remove pollutants from stormwater runoff. Impervious surfaces and other urban and suburban landscapes generate a variety of contaminants that can enter stormwater and pollute downstream receiving waters unless treatment is provided. The BioPod system uses proprietary StormMixâ„¢ biofiltration media to capture and retain pollutants including total suspended solids (TSS), metals, nutrients, gross solids, trash and debris as well as petroleum hydrocarbons. Function The BioPod system uses engineered, high-flow rate filter media to remove stormwater pollutants, allowing for a smaller footprint than conventional bioretention systems. Contained within a compact precast concrete vault, the BioPod system consists of a biofiltration chamber and an optional integrated high-flow bypass with a contoured inlet rack to minimize scour. The biofiltration chamber is filled with horizontal layers of aggregate (which may or may not include an underdrain), biofiltration media and mulch. Stormwater passes vertically down through the mulch and biofiltration media for treatment. The mulch provides pretreatment by retaining most of the solids or sediment. The biofiltration media provides further treatment by retaining finer sediment and dissolved pollutants. The aggregate allows the media bed to drain evenly for discharge through an underdrain pipe or by infiltration. Configuration The BioPod system can be configured with either an internal or external bypass. The internal bypass allows both water quality and bypass flows to enter the treatment vault. The water quality flows are directed to the biofiltration chamber while the excess flows are diverted over the bypass weir without entering the biofiltration chamber. Both the treatment and bypass flows are combined in the outlet area prior to discharge from the structure. BioPod units without an internal bypass are designed such that only treatment flows enter the treatment structure. When the system has exceeded its treatment capacity, ponding will force bypass flows to continue down the gutter to the nearest standard catch basin or other external bypass structure. The BioPod system can be configured as a tree box filter with tree and grated inlet, as a planter box filter with shrubs, grasses and an open top, or as an underground filter with access risers, doors and a subsurface inlet pipe. The optional internal bypass may be incorporated with any of these configurations. In addition, an open bottom configuration may be used to promote infiltration and groundwater recharge. The configuration and size of the BioPod system is designed to meet the requirements of a specific project. Inspection & Maintenance Overview State and local regulations require all stormwater management systems to be inspected on a regular basis and maintained as necessary to ensure performance and protect downstream receiving waters. Without maintenance, excessive pollutant buildup can limit system performance by reducing the operating capacity of the system and increasing the potential for scouring of pollutants during periods of high flow. Some configurations of the BioPod may require periodic irrigation to establish and maintain vegetation. Vegetation will typically become established about two years after planting. Irrigation requirements are ultimately dependent on climate, rainfall and the type of vegetation selected. 2 Maintenance Frequency Periodic inspection is essential for consistent system performance and is easily completed. Inspection is typically conducted a minimum of twice per year, but since pollutant transport and deposition varies from site to site, a site-specific maintenance frequency should be established during the first two or three years of operation. Inspection Equipment The following equipment is helpful when conducting BioPod inspections: â€¢ Recording device (pen and paper form, voice recorder, iPad, etc.) â€¢ Suitable clothing (appropriate footwear, gloves, hardhat, safety glasses, etc.) â€¢ Traffic control equipment (cones, barricades, signage, flagging, etc.) â€¢ Manhole hook or pry bar â€¢ Flashlight â€¢ Tape measure Inspection Procedures BioPod inspections are visual and are conducted without entering the unit. To complete an inspection, safety measures including traffic control should be deployed before the access covers or tree grates are removed. Once the covers have been removed, the following items should be checked and recorded (see form provided on page 6) to determine whether maintenance is required: â€¢ If the BioPod unit is equipped with an internal bypass, inspect the contoured inlet rack and outlet chamber and note whether there are any broken or missing parts. In the unlikely event that internal parts are broken or missing, contact Oldcastle Stormwater at (800) 579-8819 to determine appropriate corrective action. â€¢ Note whether the curb inlet, inlet pipe, or â€“ if the unit is equipped with an internal bypass â€“ the inlet rack is blocked or obstructed. â€¢ If the unit is equipped with an internal bypass, observe, quantify and record the accumulation of trash and debris in the inlet rack. The significance of accumulated trash and debris is a matter of judgment. Often, much of the trash and debris may be removed manually at the time of inspection if a separate maintenance visit is not yet warranted. â€¢ If it has not rained within the past 24 hours, note whether standing water is observed in the biofiltration chamber. â€¢ Finally, observe, quantify and record presence of invasive vegetation and the amount of trash and debris and sediment load in the biofiltration chamber. Erosion of the mulch and biofiltration media bed should also be recorded. Sediment load may be rated light, medium or heavy depending on the conditions. Loading characteristics may be determined as follows: o Light sediment load â€“ sediment is difficult to distinguish among the mulch fibers at the top of the mulch layer; the mulch appears almost new. o Medium sediment load â€“ sediment accumulation is apparent and may be concentrated in some areas; probing the mulch layer reveals lighter sediment loads under the top 1â€ of mulch. o Heavy sediment load â€“ sediment is readily apparent across the entire top of the mulch layer; individual mulch fibers are difficult to distinguish; probing the mulch layer reveals heavy sediment load under the top 1â€ of mulch. Often, much of the invasive vegetation and trash and debris may be removed manually at the time of inspection if a separate maintenance visit is not yet warranted. 3 Maintenance Indicators Maintenance should be scheduled if any of the following conditions are identified during inspection: â€¢ The concrete structure is damaged or the tree grate or access cover is damaged or missing. â€¢ The curb inlet or inlet rack is obstructed. â€¢ Standing water is observed in the biofiltration chamber more than 24 hours after a rainfall event (use discretion if the BioPod is located downstream of a storage system that attenuates flow). â€¢ Trash and debris in the inlet rack cannot be easily removed at the time of inspection. â€¢ Trash and debris, invasive vegetation or sediment load in the biofiltration chamber is heavy or excessive erosion has occurred. Maintenance Equipment The following equipment is helpful when conducting BioPod maintenance: â€¢ Suitable clothing (appropriate footwear, gloves, hardhat, safety glasses, etc.) â€¢ Traffic control equipment (cones, barricades, signage, flagging, etc.) â€¢ Manhole hook or pry bar â€¢ Flashlight â€¢ Tape measure â€¢ Rake, hoe, shovel and broom â€¢ Bucket â€¢ Pruners â€¢ Vacuum truck (optional) Maintenance Procedures Maintenance should be conducted during dry weather when no flows are entering the system. All maintenance may be conducted without entering the BioPod structure. Once safety measures such as traffic control are deployed, the access covers may be removed and the following activities may be conducted to complete maintenance: â€¢ Remove all trash and debris from the curb inlet and inlet rack manually or by using a vacuum truck as required. â€¢ Remove all trash and debris and invasive vegetation from the biofiltration chamber manually or by using a vacuum truck as required. â€¢ If the sediment load is medium or light but erosion of the biofiltration media bed is evident, redistribute the mulch with a rake or replace missing mulch as appropriate. If erosion persists, rocks may be placed in the eroded area to help dissipate energy and prevent recurring erosion. â€¢ If the sediment load is heavy, remove the mulch layer using a hoe, rake, shovel and bucket, or by using a vacuum truck as required. If the sediment load is particularly heavy, inspect the surface of the biofiltration media once the mulch has been removed. If the media appears clogged with sediment, remove and replace one or two inches of biofiltration media prior to replacing the mulch layer. â€¢ Prune vegetation as appropriate and replace damaged or dead plants as required. â€¢ Replace the tree grate and/or access covers and sweep the area around the BioPod to leave the site clean. â€¢ All material removed from the BioPod during maintenance must be disposed of in accordance with local environmental regulations. In most cases, the material may be handled in the same manner as disposal of material removed from sumped catch basins or manholes. 4 Natural, shredded hardwood mulch should be used in the BioPod. Timely replacement of the mulch layer according to the maintenance indicators described above should protect the biofiltration media below the mulch layer from clogging due to sediment accumulation. However, whenever the mulch is replaced, the BioPod should be visited 24 hours after the next major storm event to ensure that there is no standing water in the biofiltration chamber. Standing water indicates that the biofiltration media below the mulch layer is clogged and must be replaced. Please contact Oldcastle Infrastructure at (800) 579-8819 to purchase the proprietary StormMixâ„¢ biofiltration media. BioPod Tree Module BioPod Media Module BioPod Planter Module BioPod Media Vault 5 BioPod Inspection & Maintenance Log BioPod Model__________________________ Inspection Date________________________ Location______________________________________________________________________________ Condition of Internal Components Notes: Good Damaged Missing Curb Inlet or Inlet Rack Blocked Notes: Yes No Standing Water in Biofiltration Chamber Notes: Yes No Trash and Debris in Inlet Rack Notes: Yes No Trash and Debris in Biofiltration Chamber Notes: Yes No Invasive Vegetation in Biofiltration Chamber Notes: Yes No Sediment in Biofiltration Chamber Notes: Light Medium Heavy Erosion in Biofiltration Chamber Notes: Yes No Maintenance Requirements Yes - Schedule Maintenance No - Schedule Re-Inspection 6 BIOPODTM SYSTEM WITH STORMMIXâ„¢ MEDIA OUR MARKETS BUILDING COMMUNICATIONS ENERGY TRANSPORTATION STRUCTURES WATER www.oldcastleinfrastructure.com 800-579-8819 December 2018 v.1 Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 1 Appendix A â€“ WWHM Reports Appendix A Summary A-1 Narrative A-2 Overall Flow Control and LID Calculation, with Basin A-12 Sub-Basin 2 Infiltration Trench Verification Calculation A-25 Drawdown Volume Calculation A-26 Water Quality Flows for BioPods A-30 Conveyance Analysis Calculations in this section start with a global look at the site to verify compliance with the flow control Standard and the Low Impact Development (LID) Standard. The majority of developed areas on the site area fully infiltrated, but the area on the western side of the site is bypassed at allow rates. The bypassed area is referred to in the forthcoming calculations as Sub-Basin 1. The infiltrated area is Sub-Basin 2. By 100% infiltrating Sub-Basin 2, the bypassed area is small enough that when added together, the LID and flow control standards are met. Following this, it was important to break Sub-Basin 2 into further Sub-Basins. This is because the infiltration Beds are at different elevations, and we wanted to verify that there was not an imbalance that would lead overflows from one trench that would not be caught on the overall calculation, which simply runs all of basin 2 into an element depicting all of the infiltration area as 1. Following this, water quality calculations discussed in Chapter 4 area provided. This includes the Drawdown time water quality volume, along with the water quality treatment flows for the Pollution Generating hard surfaces flowing toward the right of way within the bypass basin. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 2 WWHM2012 PROJECT REPORT FIGURE A-1 DEVELOPED PROJECT FLOW CHART (OVERALL) WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name: 10.14.19 bypass calc Site Name: Site Address: City : Report Date: 10/15/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 ___________________________________________________________________ Low Flow Threshold for POC 1 : 50 Percent of the 2 Year ___________________________________________________________________ High Flow Threshold for POC 1: 50 year ___________________________________________________________________ PREDEVELOPED LAND USE 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 3 Name : Basin 1 Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat 4.222 C, Forest, Mod .783 C, Forest, Steep 1.324 Pervious Total 6.329 Impervious Land Use acre Impervious Total 0 Basin Total 6.329 ____________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ MITIGATED LAND USE Name : Basin 1 BYPASS Bypass: Yes GroundWater: No Pervious Land Use acre C, Lawn, Flat .32 Pervious Total 0.32 Impervious Land Use acre SIDEWALKS FLAT 0.326 PARKING FLAT 0.115 Impervious Total 0.441 Basin Total 0.761 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ Name : Basin 2 TO ON SITE INFILTRATION Bypass: No GroundWater: No 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 4 Pervious Land Use acre C, Lawn, Flat 1.565 Pervious Total 1.565 Impervious Land Use acre ROOF TOPS FLAT 1.463 SIDEWALKS FLAT 0.918 PARKING FLAT 1.622 Impervious Total 4.003 Basin Total 5.568 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 1 Gravel Trench Bed 1 ___________________________________________________________________ Name : Gravel Trench Bed 101-110 Bottom Length: 1850.00 ft. Bottom Width: 20.00 ft. (37,000 SF TOTAL) Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 944.466 Total Volume Through Riser (ac-ft.): 0.013 Total Volume Through Facility (ac-ft.): 944.479 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 ___________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.849 0.000 0.000 0.000 0.0167 0.849 0.005 0.000 0.805 0.0333 0.849 0.009 0.000 0.805 0.0500 0.849 0.014 0.000 0.805 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 5 0.0667 0.849 0.019 0.000 0.805 0.0833 0.849 0.024 0.000 0.805 0.1000 0.849 0.029 0.000 0.805 0.1167 0.849 0.034 0.000 0.805 0.1333 0.849 0.039 0.000 0.805 0.1500 0.849 0.044 0.000 0.805 0.1667 0.849 0.049 0.000 0.805 0.1833 0.849 0.054 0.000 0.805 0.2000 0.849 0.059 0.000 0.805 0.2167 0.849 0.064 0.000 0.805 0.2333 0.849 0.069 0.000 0.805 0.2500 0.849 0.074 0.000 0.805 0.2667 0.849 0.079 0.000 0.805 0.2833 0.849 0.084 0.000 0.805 0.3000 0.849 0.089 0.000 0.805 0.3167 0.849 0.094 0.000 0.805 0.3333 0.849 0.099 0.000 0.805 0.3500 0.849 0.104 0.000 0.805 0.3667 0.849 0.109 0.000 0.805 0.3833 0.849 0.114 0.000 0.805 0.4000 0.849 0.118 0.000 0.805 0.4167 0.849 0.123 0.000 0.805 0.4333 0.849 0.128 0.000 0.805 0.4500 0.849 0.133 0.000 0.805 0.4667 0.849 0.138 0.000 0.805 0.4833 0.849 0.143 0.000 0.805 0.5000 0.849 0.148 0.000 0.805 0.5167 0.849 0.153 0.000 0.805 0.5333 0.849 0.158 0.000 0.805 0.5500 0.849 0.163 0.000 0.805 0.5667 0.849 0.168 0.000 0.805 0.5833 0.849 0.173 0.000 0.805 0.6000 0.849 0.178 0.000 0.805 0.6167 0.849 0.183 0.000 0.805 0.6333 0.849 0.188 0.000 0.805 0.6500 0.849 0.193 0.000 0.805 0.6667 0.849 0.198 0.000 0.805 0.6833 0.849 0.203 0.000 0.805 0.7000 0.849 0.208 0.000 0.805 0.7167 0.849 0.213 0.000 0.805 0.7333 0.849 0.218 0.000 0.805 0.7500 0.849 0.223 0.000 0.805 0.7667 0.849 0.227 0.000 0.805 0.7833 0.849 0.232 0.000 0.805 0.8000 0.849 0.237 0.000 0.805 0.8167 0.849 0.242 0.000 0.805 0.8333 0.849 0.247 0.000 0.805 0.8500 0.849 0.252 0.000 0.805 0.8667 0.849 0.257 0.000 0.805 0.8833 0.849 0.262 0.000 0.805 0.9000 0.849 0.267 0.000 0.805 0.9167 0.849 0.272 0.000 0.805 0.9333 0.849 0.277 0.000 0.805 0.9500 0.849 0.282 0.000 0.805 0.9667 0.849 0.287 0.000 0.805 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 6 0.9833 0.849 0.292 0.000 0.805 1.0000 0.849 0.297 0.000 0.805 1.0167 0.849 0.302 0.000 0.805 1.0333 0.849 0.307 0.000 0.805 1.0500 0.849 0.312 0.000 0.805 1.0667 0.849 0.317 0.000 0.805 1.0833 0.849 0.322 0.000 0.805 1.1000 0.849 0.327 0.000 0.805 1.1167 0.849 0.332 0.000 0.805 1.1333 0.849 0.336 0.000 0.805 1.1500 0.849 0.341 0.000 0.805 1.1667 0.849 0.346 0.000 0.805 1.1833 0.849 0.351 0.000 0.805 1.2000 0.849 0.356 0.000 0.805 1.2167 0.849 0.361 0.000 0.805 1.2333 0.849 0.366 0.000 0.805 1.2500 0.849 0.371 0.000 0.805 1.2667 0.849 0.376 0.000 0.805 1.2833 0.849 0.381 0.000 0.805 1.3000 0.849 0.386 0.000 0.805 1.3167 0.849 0.391 0.000 0.805 1.3333 0.849 0.396 0.000 0.805 1.3500 0.849 0.401 0.000 0.805 1.3667 0.849 0.406 0.000 0.805 1.3833 0.849 0.411 0.000 0.805 1.4000 0.849 0.416 0.000 0.805 1.4167 0.849 0.421 0.000 0.805 1.4333 0.849 0.426 0.000 0.805 1.4500 0.849 0.431 0.000 0.805 1.4667 0.849 0.436 0.015 0.805 1.4833 0.849 0.441 0.043 0.805 1.5000 0.849 0.445 0.078 0.805 ___________________________________________________________________ ___________________________________________________________________ ANALYSIS RESULTS Stream Protection Duration ___________________________________________________________________ Predeveloped Landuse Totals for POC #1 Total Pervious Area:6.329 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #1 Total Pervious Area:1.885 Total Impervious Area:4.444 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.241736 5 year 0.378011 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 7 10 year 0.484637 25 year 0.638926 50 year 0.768682 100 year 0.911671 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.276088 5 year 0.393177 10 year 0.482248 25 year 0.608712 50 year 0.71355 100 year 0.827948 Stream Protection Duration POC #1 The Facility PASSED. Flow(cfs) Predev Mit Percentage Pass/Fail 0.1209 16010 1379 8 Pass 0.1274 13503 1141 8 Pass 0.1340 11644 1008 8 Pass 0.1405 9768 847 8 Pass 0.1470 8147 720 8 Pass 0.1536 7007 634 9 Pass 0.1601 5858 551 9 Pass 0.1667 5067 472 9 Pass 0.1732 4348 407 9 Pass 0.1798 3790 365 9 Pass 0.1863 3189 327 10 Pass 0.1928 2789 296 10 Pass 0.1994 2413 258 10 Pass 0.2059 2160 231 10 Pass 0.2125 1889 198 10 Pass 0.2190 1626 182 11 Pass 0.2256 1470 167 11 Pass 0.2321 1303 156 11 Pass 0.2387 1166 147 12 Pass 0.2452 1031 129 12 Pass 0.2517 965 120 12 Pass 0.2583 900 108 12 Pass 0.2648 840 100 11 Pass 0.2714 778 90 11 Pass 0.2779 742 84 11 Pass 0.2845 693 78 11 Pass 0.2910 641 73 11 Pass 0.2975 609 69 11 Pass 0.3041 581 66 11 Pass 0.3106 560 63 11 Pass 0.3172 544 58 10 Pass 0.3237 528 55 10 Pass 0.3303 504 49 9 Pass 0.3368 465 44 9 Pass 0.3433 442 43 9 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 8 0.3499 423 39 9 Pass 0.3564 402 35 8 Pass 0.3630 384 33 8 Pass 0.3695 367 31 8 Pass 0.3761 350 28 8 Pass 0.3826 338 24 7 Pass 0.3892 328 22 6 Pass 0.3957 321 21 6 Pass 0.4022 310 18 5 Pass 0.4088 304 16 5 Pass 0.4153 295 14 4 Pass 0.4219 286 13 4 Pass 0.4284 275 8 2 Pass 0.4350 266 8 3 Pass 0.4415 254 8 3 Pass 0.4480 241 8 3 Pass 0.4546 234 8 3 Pass 0.4611 218 8 3 Pass 0.4677 211 8 3 Pass 0.4742 203 7 3 Pass 0.4808 193 6 3 Pass 0.4873 174 6 3 Pass 0.4939 168 6 3 Pass 0.5004 160 5 3 Pass 0.5069 153 5 3 Pass 0.5135 146 5 3 Pass 0.5200 138 5 3 Pass 0.5266 132 5 3 Pass 0.5331 123 5 4 Pass 0.5397 115 5 4 Pass 0.5462 98 5 5 Pass 0.5527 83 5 6 Pass 0.5593 70 5 7 Pass 0.5658 59 5 8 Pass 0.5724 51 4 7 Pass 0.5789 46 4 8 Pass 0.5855 40 4 10 Pass 0.5920 37 4 10 Pass 0.5985 35 4 11 Pass 0.6051 29 4 13 Pass 0.6116 26 4 15 Pass 0.6182 19 4 21 Pass 0.6247 16 4 25 Pass 0.6313 15 4 26 Pass 0.6378 11 4 36 Pass 0.6444 7 4 57 Pass 0.6509 6 4 66 Pass 0.6574 4 4 100 Pass 0.6640 4 4 100 Pass 0.6705 4 4 100 Pass 0.6771 4 3 75 Pass 0.6836 4 3 75 Pass 0.6902 4 3 75 Pass 0.6967 3 3 100 Pass 0.7032 3 3 100 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 9 0.7098 3 3 100 Pass 0.7163 3 3 100 Pass 0.7229 3 3 100 Pass 0.7294 3 3 100 Pass 0.7360 3 3 100 Pass 0.7425 3 2 66 Pass 0.7491 3 2 66 Pass 0.7556 3 2 66 Pass 0.7621 2 2 100 Pass 0.7687 2 2 100 Pass ____________________________________________________ LID Duration POC #1 The Facility PASSED. Flow(cfs) Predev Mit Percentage Pass/Fail 0.0193 284899 73898 25 Pass 0.0204 273563 69813 25 Pass 0.0214 262868 66027 25 Pass 0.0224 252816 62519 24 Pass 0.0234 243191 59290 24 Pass 0.0245 234207 56188 23 Pass 0.0255 225652 53344 23 Pass 0.0265 217524 50713 23 Pass 0.0275 209653 48189 22 Pass 0.0286 202124 45772 22 Pass 0.0296 194980 43505 22 Pass 0.0306 188243 41345 21 Pass 0.0316 181676 39227 21 Pass 0.0327 175324 37366 21 Pass 0.0337 169357 35527 20 Pass 0.0347 163560 33794 20 Pass 0.0357 158063 32190 20 Pass 0.0368 152780 30586 20 Pass 0.0378 147690 29132 19 Pass 0.0388 142770 27805 19 Pass 0.0398 138022 26458 19 Pass 0.0409 133466 25153 18 Pass 0.0419 129103 24020 18 Pass 0.0429 124932 22886 18 Pass 0.0440 120889 21817 18 Pass 0.0450 117018 20826 17 Pass 0.0460 113296 19922 17 Pass 0.0470 109767 19017 17 Pass 0.0481 106367 18148 17 Pass 0.0491 103158 17316 16 Pass 0.0501 100078 16489 16 Pass 0.0511 97084 15719 16 Pass 0.0522 94089 15066 16 Pass 0.0532 91266 14399 15 Pass 0.0542 88592 13787 15 Pass 0.0552 85983 13152 15 Pass 0.0563 83438 12557 15 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 10 0.0573 80957 12003 14 Pass 0.0583 78625 11475 14 Pass 0.0593 76358 11000 14 Pass 0.0604 74134 10517 14 Pass 0.0614 71973 10042 13 Pass 0.0624 69899 9589 13 Pass 0.0634 67931 9176 13 Pass 0.0645 65920 8778 13 Pass 0.0655 64038 8412 13 Pass 0.0665 62199 8070 12 Pass 0.0675 60488 7734 12 Pass 0.0686 58734 7392 12 Pass 0.0696 57087 7099 12 Pass 0.0706 55504 6817 12 Pass 0.0716 53985 6509 12 Pass 0.0727 52552 6239 11 Pass 0.0737 51098 5989 11 Pass 0.0747 49729 5736 11 Pass 0.0757 48360 5499 11 Pass 0.0768 47013 5270 11 Pass 0.0778 45751 5069 11 Pass 0.0788 44531 4855 10 Pass 0.0798 43398 4695 10 Pass 0.0809 42200 4537 10 Pass 0.0819 41109 4368 10 Pass 0.0829 39997 4207 10 Pass 0.0839 38992 4068 10 Pass 0.0850 37944 3927 10 Pass 0.0860 36981 3788 10 Pass 0.0870 36019 3651 10 Pass 0.0881 35078 3525 10 Pass 0.0891 34158 3403 9 Pass 0.0901 33302 3300 9 Pass 0.0911 32447 3198 9 Pass 0.0922 31613 3097 9 Pass 0.0932 30800 2999 9 Pass 0.0942 30051 2892 9 Pass 0.0952 29303 2804 9 Pass 0.0963 28575 2710 9 Pass 0.0973 27827 2627 9 Pass 0.0983 27121 2547 9 Pass 0.0993 26437 2460 9 Pass 0.1004 25795 2383 9 Pass 0.1014 25153 2304 9 Pass 0.1024 24490 2227 9 Pass 0.1034 23913 2165 9 Pass 0.1045 23335 2101 9 Pass 0.1055 22779 2042 8 Pass 0.1065 22202 1977 8 Pass 0.1075 21645 1927 8 Pass 0.1086 21139 1871 8 Pass 0.1096 20659 1821 8 Pass 0.1106 20114 1772 8 Pass 0.1116 19654 1721 8 Pass 0.1127 19186 1671 8 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 11 0.1137 18749 1628 8 Pass 0.1147 18257 1590 8 Pass 0.1157 17817 1552 8 Pass 0.1168 17353 1509 8 Pass 0.1178 16946 1466 8 Pass 0.1188 16519 1428 8 Pass 0.1198 16093 1390 8 Pass 0.1209 15682 1361 8 Pass _____________________________________________________ ___________________________________________________________________ Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 12 FIGURE A-2 DEVELOPED BASIN 2 FLOW CHART WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name: 10.16.19 Basin 2 calc Site Name: Centennial Park Site Address: City : Report Date: 10/16/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 ___________________________________________________________________ Low Flow Threshold for POC 1 : 50 Percent of the 2 Year ___________________________________________________________________ High Flow Threshold for POC 1: 50 year 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 13 ___________________________________________________________________ PREDEVELOPED LAND USE Name : Basin 2 â€“ To Onsite Infiltration Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat 3.461 C, Forest, Mod .783 C, Forest, Steep 1.324 Pervious Total 5.568 Impervious Land Use acre Impervious Total 0 Basin Total 5.568 __________________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ MITIGATED LAND USE Name : Basin 2a Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat 1.046 Pervious Total 1.046 Impervious Land Use acre ROOF TOPS FLAT 0.549 SIDEWALKS FLAT 0.566 PARKING FLAT 0.766 Impervious Total 1.881 Basin Total 2.927 _______________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 2a Gravel Trench Bed 2a __________________________________________________________________ 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 14 Name : Gravel Trench Bed 2a (106, 107, 108) Bottom Length: 338.00 ft. Bottom Width: 40.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 89.981 Total Volume Through Riser (ac-ft.): 0.042 Total Volume Through Facility (ac-ft.): 90.023 Percent Infiltrated: 99.95 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 Gravel Trench Bed 2c ___________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.310 0.000 0.000 0.000 0.0167 0.310 0.001 0.000 0.294 0.0333 0.310 0.003 0.000 0.294 0.0500 0.310 0.005 0.000 0.294 0.0667 0.310 0.007 0.000 0.294 0.0833 0.310 0.009 0.000 0.294 0.1000 0.310 0.010 0.000 0.294 0.1167 0.310 0.012 0.000 0.294 0.1333 0.310 0.014 0.000 0.294 0.1500 0.310 0.016 0.000 0.294 0.1667 0.310 0.018 0.000 0.294 0.1833 0.310 0.019 0.000 0.294 0.2000 0.310 0.021 0.000 0.294 0.2167 0.310 0.023 0.000 0.294 0.2333 0.310 0.025 0.000 0.294 0.2500 0.310 0.027 0.000 0.294 0.2667 0.310 0.029 0.000 0.294 0.2833 0.310 0.030 0.000 0.294 0.3000 0.310 0.032 0.000 0.294 0.3167 0.310 0.034 0.000 0.294 0.3333 0.310 0.036 0.000 0.294 0.3500 0.310 0.038 0.000 0.294 0.3667 0.310 0.039 0.000 0.294 0.3833 0.310 0.041 0.000 0.294 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 15 0.4000 0.310 0.043 0.000 0.294 0.4167 0.310 0.045 0.000 0.294 0.4333 0.310 0.047 0.000 0.294 0.4500 0.310 0.048 0.000 0.294 0.4667 0.310 0.050 0.000 0.294 0.4833 0.310 0.052 0.000 0.294 0.5000 0.310 0.054 0.000 0.294 0.5167 0.310 0.056 0.000 0.294 0.5333 0.310 0.057 0.000 0.294 0.5500 0.310 0.059 0.000 0.294 0.5667 0.310 0.061 0.000 0.294 0.5833 0.310 0.063 0.000 0.294 0.6000 0.310 0.065 0.000 0.294 0.6167 0.310 0.067 0.000 0.294 0.6333 0.310 0.068 0.000 0.294 0.6500 0.310 0.070 0.000 0.294 0.6667 0.310 0.072 0.000 0.294 0.6833 0.310 0.074 0.000 0.294 0.7000 0.310 0.076 0.000 0.294 0.7167 0.310 0.077 0.000 0.294 0.7333 0.310 0.079 0.000 0.294 0.7500 0.310 0.081 0.000 0.294 0.7667 0.310 0.083 0.000 0.294 0.7833 0.310 0.085 0.000 0.294 0.8000 0.310 0.086 0.000 0.294 0.8167 0.310 0.088 0.000 0.294 0.8333 0.310 0.090 0.000 0.294 0.8500 0.310 0.092 0.000 0.294 0.8667 0.310 0.094 0.000 0.294 0.8833 0.310 0.096 0.000 0.294 0.9000 0.310 0.097 0.000 0.294 0.9167 0.310 0.099 0.000 0.294 0.9333 0.310 0.101 0.000 0.294 0.9500 0.310 0.103 0.000 0.294 0.9667 0.310 0.105 0.000 0.294 0.9833 0.310 0.106 0.000 0.294 1.0000 0.310 0.108 0.000 0.294 1.0167 0.310 0.110 0.000 0.294 1.0333 0.310 0.112 0.000 0.294 1.0500 0.310 0.114 0.000 0.294 1.0667 0.310 0.115 0.000 0.294 1.0833 0.310 0.117 0.000 0.294 1.1000 0.310 0.119 0.000 0.294 1.1167 0.310 0.121 0.000 0.294 1.1333 0.310 0.123 0.000 0.294 1.1500 0.310 0.124 0.000 0.294 1.1667 0.310 0.126 0.000 0.294 1.1833 0.310 0.128 0.000 0.294 1.2000 0.310 0.130 0.000 0.294 1.2167 0.310 0.132 0.000 0.294 1.2333 0.310 0.134 0.000 0.294 1.2500 0.310 0.135 0.000 0.294 1.2667 0.310 0.137 0.000 0.294 1.2833 0.310 0.139 0.000 0.294 1.3000 0.310 0.141 0.000 0.294 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 16 1.3167 0.310 0.143 0.000 0.294 1.3333 0.310 0.144 0.000 0.294 1.3500 0.310 0.146 0.000 0.294 1.3667 0.310 0.148 0.000 0.294 1.3833 0.310 0.150 0.000 0.294 1.4000 0.310 0.152 0.000 0.294 1.4167 0.310 0.153 0.000 0.294 1.4333 0.310 0.155 0.000 0.294 1.4500 0.310 0.157 0.000 0.294 1.4667 0.310 0.159 0.015 0.294 1.4833 0.310 0.161 0.043 0.294 1.5000 0.310 0.162 0.078 0.294 ___________________________________________________________________ Name : Basin 2b Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .09 Pervious Total 0.09 Impervious Land Use acre ROOF TOPS FLAT 0.284 SIDEWALKS FLAT 0.081 PARKING FLAT 0.25 Impervious Total 0.615 Basin Total 0.705 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 2b Gravel Trench Bed 2b ___________________________________________________________________ Name : Gravel Trench Bed 2b (109, 110) Bottom Length: 290.00 ft. Bottom Width: 25.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 22.389 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 17 Total Volume Through Riser (ac-ft.): 0 Total Volume Through Facility (ac-ft.): 22.389 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 Gravel Trench Bed 2c ___________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.166 0.000 0.000 0.000 0.0167 0.166 0.001 0.000 0.157 0.0333 0.166 0.001 0.000 0.157 0.0500 0.166 0.002 0.000 0.157 0.0667 0.166 0.003 0.000 0.157 0.0833 0.166 0.004 0.000 0.157 0.1000 0.166 0.005 0.000 0.157 0.1167 0.166 0.006 0.000 0.157 0.1333 0.166 0.007 0.000 0.157 0.1500 0.166 0.008 0.000 0.157 0.1667 0.166 0.009 0.000 0.157 0.1833 0.166 0.010 0.000 0.157 0.2000 0.166 0.011 0.000 0.157 0.2167 0.166 0.012 0.000 0.157 0.2333 0.166 0.013 0.000 0.157 0.2500 0.166 0.014 0.000 0.157 0.2667 0.166 0.015 0.000 0.157 0.2833 0.166 0.016 0.000 0.157 0.3000 0.166 0.017 0.000 0.157 0.3167 0.166 0.018 0.000 0.157 0.3333 0.166 0.019 0.000 0.157 0.3500 0.166 0.020 0.000 0.157 0.3667 0.166 0.021 0.000 0.157 0.3833 0.166 0.022 0.000 0.157 0.4000 0.166 0.023 0.000 0.157 0.4167 0.166 0.024 0.000 0.157 0.4333 0.166 0.025 0.000 0.157 0.4500 0.166 0.026 0.000 0.157 0.4667 0.166 0.027 0.000 0.157 0.4833 0.166 0.028 0.000 0.157 0.5000 0.166 0.029 0.000 0.157 0.5167 0.166 0.030 0.000 0.157 0.5333 0.166 0.031 0.000 0.157 0.5500 0.166 0.032 0.000 0.157 0.5667 0.166 0.033 0.000 0.157 0.5833 0.166 0.034 0.000 0.157 0.6000 0.166 0.035 0.000 0.157 0.6167 0.166 0.035 0.000 0.157 0.6333 0.166 0.036 0.000 0.157 0.6500 0.166 0.037 0.000 0.157 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 18 0.6667 0.166 0.038 0.000 0.157 0.6833 0.166 0.039 0.000 0.157 0.7000 0.166 0.040 0.000 0.157 0.7167 0.166 0.041 0.000 0.157 0.7333 0.166 0.042 0.000 0.157 0.7500 0.166 0.043 0.000 0.157 0.7667 0.166 0.044 0.000 0.157 0.7833 0.166 0.045 0.000 0.157 0.8000 0.166 0.046 0.000 0.157 0.8167 0.166 0.047 0.000 0.157 0.8333 0.166 0.048 0.000 0.157 0.8500 0.166 0.049 0.000 0.157 0.8667 0.166 0.050 0.000 0.157 0.8833 0.166 0.051 0.000 0.157 0.9000 0.166 0.052 0.000 0.157 0.9167 0.166 0.053 0.000 0.157 0.9333 0.166 0.054 0.000 0.157 0.9500 0.166 0.055 0.000 0.157 0.9667 0.166 0.056 0.000 0.157 0.9833 0.166 0.057 0.000 0.157 1.0000 0.166 0.058 0.000 0.157 1.0167 0.166 0.059 0.000 0.157 1.0333 0.166 0.060 0.000 0.157 1.0500 0.166 0.061 0.000 0.157 1.0667 0.166 0.062 0.000 0.157 1.0833 0.166 0.063 0.000 0.157 1.1000 0.166 0.064 0.000 0.157 1.1167 0.166 0.065 0.000 0.157 1.1333 0.166 0.066 0.000 0.157 1.1500 0.166 0.067 0.000 0.157 1.1667 0.166 0.068 0.000 0.157 1.1833 0.166 0.068 0.000 0.157 1.2000 0.166 0.069 0.000 0.157 1.2167 0.166 0.070 0.000 0.157 1.2333 0.166 0.071 0.000 0.157 1.2500 0.166 0.072 0.000 0.157 1.2667 0.166 0.073 0.000 0.157 1.2833 0.166 0.074 0.000 0.157 1.3000 0.166 0.075 0.000 0.157 1.3167 0.166 0.076 0.000 0.157 1.3333 0.166 0.077 0.000 0.157 1.3500 0.166 0.078 0.000 0.157 1.3667 0.166 0.079 0.000 0.157 1.3833 0.166 0.080 0.000 0.157 1.4000 0.166 0.081 0.000 0.157 1.4167 0.166 0.082 0.000 0.157 1.4333 0.166 0.083 0.000 0.157 1.4500 0.166 0.084 0.000 0.157 1.4667 0.166 0.085 0.015 0.157 1.4833 0.166 0.086 0.043 0.157 1.5000 0.166 0.087 0.078 0.157 ___________________________________________________________________ Name : Basin 2c 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 19 Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .429 Pervious Total 0.429 Impervious Land Use acre ROOF TOPS FLAT 0.63 SIDEWALKS FLAT 0.271 PARKING FLAT 0.606 Impervious Total 1.507 Basin Total 1.936 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 2c Gravel Trench Bed 2c ___________________________________________________________________ Name : Gravel Trench Bed 2c (101-105) Bottom Length: 406.00 ft. Bottom Width: 40.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 58.717 Total Volume Through Riser (ac-ft.): 0 Total Volume Through Facility (ac-ft.): 58.717 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 _________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.372 0.000 0.000 0.000 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 20 0.0167 0.372 0.002 0.000 0.353 0.0333 0.372 0.004 0.000 0.353 0.0500 0.372 0.006 0.000 0.353 0.0667 0.372 0.008 0.000 0.353 0.0833 0.372 0.010 0.000 0.353 0.1000 0.372 0.013 0.000 0.353 0.1167 0.372 0.015 0.000 0.353 0.1333 0.372 0.017 0.000 0.353 0.1500 0.372 0.019 0.000 0.353 0.1667 0.372 0.021 0.000 0.353 0.1833 0.372 0.023 0.000 0.353 0.2000 0.372 0.026 0.000 0.353 0.2167 0.372 0.028 0.000 0.353 0.2333 0.372 0.030 0.000 0.353 0.2500 0.372 0.032 0.000 0.353 0.2667 0.372 0.034 0.000 0.353 0.2833 0.372 0.037 0.000 0.353 0.3000 0.372 0.039 0.000 0.353 0.3167 0.372 0.041 0.000 0.353 0.3333 0.372 0.043 0.000 0.353 0.3500 0.372 0.045 0.000 0.353 0.3667 0.372 0.047 0.000 0.353 0.3833 0.372 0.050 0.000 0.353 0.4000 0.372 0.052 0.000 0.353 0.4167 0.372 0.054 0.000 0.353 0.4333 0.372 0.056 0.000 0.353 0.4500 0.372 0.058 0.000 0.353 0.4667 0.372 0.060 0.000 0.353 0.4833 0.372 0.063 0.000 0.353 0.5000 0.372 0.065 0.000 0.353 0.5167 0.372 0.067 0.000 0.353 0.5333 0.372 0.069 0.000 0.353 0.5500 0.372 0.071 0.000 0.353 0.5667 0.372 0.073 0.000 0.353 0.5833 0.372 0.076 0.000 0.353 0.6000 0.372 0.078 0.000 0.353 0.6167 0.372 0.080 0.000 0.353 0.6333 0.372 0.082 0.000 0.353 0.6500 0.372 0.084 0.000 0.353 0.6667 0.372 0.087 0.000 0.353 0.6833 0.372 0.089 0.000 0.353 0.7000 0.372 0.091 0.000 0.353 0.7167 0.372 0.093 0.000 0.353 0.7333 0.372 0.095 0.000 0.353 0.7500 0.372 0.097 0.000 0.353 0.7667 0.372 0.100 0.000 0.353 0.7833 0.372 0.102 0.000 0.353 0.8000 0.372 0.104 0.000 0.353 0.8167 0.372 0.106 0.000 0.353 0.8333 0.372 0.108 0.000 0.353 0.8500 0.372 0.110 0.000 0.353 0.8667 0.372 0.113 0.000 0.353 0.8833 0.372 0.115 0.000 0.353 0.9000 0.372 0.117 0.000 0.353 0.9167 0.372 0.119 0.000 0.353 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 21 0.9333 0.372 0.121 0.000 0.353 0.9500 0.372 0.124 0.000 0.353 0.9667 0.372 0.126 0.000 0.353 0.9833 0.372 0.128 0.000 0.353 1.0000 0.372 0.130 0.000 0.353 1.0167 0.372 0.132 0.000 0.353 1.0333 0.372 0.134 0.000 0.353 1.0500 0.372 0.137 0.000 0.353 1.0667 0.372 0.139 0.000 0.353 1.0833 0.372 0.141 0.000 0.353 1.1000 0.372 0.143 0.000 0.353 1.1167 0.372 0.145 0.000 0.353 1.1333 0.372 0.147 0.000 0.353 1.1500 0.372 0.150 0.000 0.353 1.1667 0.372 0.152 0.000 0.353 1.1833 0.372 0.154 0.000 0.353 1.2000 0.372 0.156 0.000 0.353 1.2167 0.372 0.158 0.000 0.353 1.2333 0.372 0.160 0.000 0.353 1.2500 0.372 0.163 0.000 0.353 1.2667 0.372 0.165 0.000 0.353 1.2833 0.372 0.167 0.000 0.353 1.3000 0.372 0.169 0.000 0.353 1.3167 0.372 0.171 0.000 0.353 1.3333 0.372 0.174 0.000 0.353 1.3500 0.372 0.176 0.000 0.353 1.3667 0.372 0.178 0.000 0.353 1.3833 0.372 0.180 0.000 0.353 1.4000 0.372 0.182 0.000 0.353 1.4167 0.372 0.184 0.000 0.353 1.4333 0.372 0.187 0.000 0.353 1.4500 0.372 0.189 0.000 0.353 1.4667 0.372 0.191 0.015 0.353 1.4833 0.372 0.193 0.043 0.353 1.5000 0.372 0.195 0.078 0.353 ___________________________________________________________________ ___________________________________________________________________ ANALYSIS RESULTS Stream Protection Duration ______________________________________________________ Predeveloped Landuse Totals for POC #1 Total Pervious Area:5.568 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #1 Total Pervious Area:1.565 Total Impervious Area:4.003 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.245801 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 22 5 year 0.370564 10 year 0.467621 25 year 0.607738 50 year 0.725502 100 year 0.855329 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0 5 year 0 10 year 0 25 year 0 50 year 0 100 year 0 Stream Protection Duration POC #1 The Facility PASSED. Flow(cfs) Predev Mit Percentage Pass/Fail 0.1229 2517 0 0 Pass 0.1290 2123 0 0 Pass 0.1351 1724 0 0 Pass 0.1412 1459 0 0 Pass 0.1472 1218 0 0 Pass 0.1533 1013 0 0 Pass 0.1594 787 0 0 Pass 0.1655 603 0 0 Pass 0.1716 472 0 0 Pass 0.1777 374 0 0 Pass 0.1838 294 0 0 Pass 0.1899 227 0 0 Pass 0.1959 175 0 0 Pass 0.2020 137 0 0 Pass 0.2081 112 0 0 Pass 0.2142 92 0 0 Pass 0.2203 75 0 0 Pass 0.2264 63 0 0 Pass 0.2325 54 0 0 Pass 0.2386 41 0 0 Pass 0.2446 37 0 0 Pass 0.2507 31 0 0 Pass 0.2568 13 0 0 Pass 0.2629 9 0 0 Pass 0.2690 9 0 0 Pass 0.2751 7 0 0 Pass 0.2812 7 0 0 Pass 0.2872 7 0 0 Pass 0.2933 7 0 0 Pass 0.2994 6 0 0 Pass 0.3055 4 0 0 Pass 0.3116 4 0 0 Pass 0.3177 3 0 0 Pass 0.3238 3 0 0 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 23 0.3299 3 0 0 Pass 0.3359 3 0 0 Pass 0.3420 3 0 0 Pass 0.3481 3 0 0 Pass 0.3542 3 0 0 Pass 0.3603 3 0 0 Pass 0.3664 3 0 0 Pass 0.3725 3 0 0 Pass 0.3785 3 0 0 Pass 0.3846 3 0 0 Pass 0.3907 3 0 0 Pass 0.3968 3 0 0 Pass 0.4029 3 0 0 Pass 0.4090 3 0 0 Pass 0.4151 2 0 0 Pass 0.4212 2 0 0 Pass 0.4272 2 0 0 Pass 0.4333 2 0 0 Pass 0.4394 1 0 0 Pass 0.4455 1 0 0 Pass 0.4516 1 0 0 Pass 0.4577 1 0 0 Pass 0.4638 1 0 0 Pass 0.4699 1 0 0 Pass 0.4759 1 0 0 Pass 0.4820 1 0 0 Pass 0.4881 1 0 0 Pass 0.4942 1 0 0 Pass 0.5003 1 0 0 Pass 0.5064 1 0 0 Pass 0.5125 1 0 0 Pass 0.5185 1 0 0 Pass 0.5246 1 0 0 Pass 0.5307 1 0 0 Pass 0.5368 1 0 0 Pass 0.5429 1 0 0 Pass 0.5490 1 0 0 Pass 0.5551 1 0 0 Pass 0.5612 1 0 0 Pass 0.5672 1 0 0 Pass 0.5733 1 0 0 Pass 0.5794 1 0 0 Pass 0.5855 1 0 0 Pass 0.5916 1 0 0 Pass 0.5977 1 0 0 Pass 0.6038 1 0 0 Pass 0.6099 1 0 0 Pass 0.6159 1 0 0 Pass 0.6220 1 0 0 Pass 0.6281 1 0 0 Pass 0.6342 1 0 0 Pass 0.6403 1 0 0 Pass 0.6464 1 0 0 Pass 0.6525 1 0 0 Pass 0.6585 1 0 0 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 24 0.6646 1 0 0 Pass 0.6707 1 0 0 Pass 0.6768 1 0 0 Pass 0.6829 1 0 0 Pass 0.6890 1 0 0 Pass 0.6951 1 0 0 Pass 0.7012 1 0 0 Pass 0.7072 1 0 0 Pass 0.7133 1 0 0 Pass 0.7194 1 0 0 Pass 0.7255 1 0 0 Pass _____________________________________________________ Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 25 WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name infiltration drawdown calc (BASIN 2 ONLY) Site Name: Centennial Park Site Address: City : Report Date: 10/15/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 MITIGATED LAND USE Pervious Land Use acre C, Lawn, Flat 1.565 Pervious Total 1.565 Impervious Land Use acre ROOF TOPS FLAT 1.463 SIDEWALKS FLAT 0.918 PARKING FLAT 1.622 Impervious Total 4.003 Basin Total 5.568 ________________________________________________________________ Water Quality BMP Flow and Volume for POC #1 On-line facility volume: 0.5288 acre-feet On-line facility target flow: 0.7526 cfs. Adjusted for 15 min: 0.7526 cfs. Off-line facility target flow: 0.425 cfs. Adjusted for 15 min: 0.425 cfs. Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 26 WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name: Driveway WQ flow Sizing Site Name: Centennial Park Site Address: City : Arlington Report Date: 10/15/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 ___________________________________________________________________ PREDEVELOPED LAND USE Name : Basin 1 - North Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat .089 Pervious Total 0.089 Impervious Land Use acre Impervious Total 0 Basin Total 0.089 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ Name : Basin 2 â€“ South Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat .128 Pervious Total 0.128 Impervious Land Use acre Impervious Total 0 Basin Total 0.128 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 27 ________________________________________________________________ Element Flows To: Surface Interflow Groundwater _________________________________________________________________ MITIGATED LAND USE Name : Basin 1 â€“ North Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .017 Pervious Total 0.017 Impervious Land Use acre DRIVEWAYS FLAT 0.049 SIDEWALKS FLAT 0.023 Impervious Total 0.072 Basin Total 0.089 _________________________________________________________________ Element Flows To: Surface Interflow Groundwater __________________________________________________________________ Name : Basin 2 â€“ South Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .058 Pervious Total 0.058 Impervious Land Use acre DRIVEWAYS FLAT 0.047 SIDEWALKS FLAT 0.023 Impervious Total 0.07 Basin Total 0.128 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater _____________________________________________________________________________ ANALYSIS RESULTS 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 28 Stream Protection Duration __________________________________________________________________ Predeveloped Landuse Totals for POC #1 â€“ North Driveway Total Pervious Area:0.089 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #1 â€“ North Driveway Total Pervious Area:0.017 Total Impervious Area:0.072 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #1 â€“ North Driveway Return Period Flow(cfs) 2 year 0.040491 5 year 0.055638 10 year 0.066848 25 year 0.082414 50 year 0.095068 100 year 0.108663 Flow Frequency Return Periods for Mitigated. POC #1 â€“ North Driveway Return Period Flow(cfs) 2 year 0.040491 5 year 0.055638 10 year 0.066848 25 year 0.082414 50 year 0.095068 100 year 0.108663 Water Quality BMP Flow and Volume for POC #1 - North Driveway On-line facility volume: 0.0091 acre-feet On-line facility target flow: 0.0136 cfs. Adjusted for 15 min: 0.0136 cfs. Off-line facility target flow: 0.0077 cfs. Adjusted for 15 min: 0.0077 cfs. Stream Protection Duration _________________________________________________________________ Predeveloped Landuse Totals for POC #2 â€“ South Driveway Total Pervious Area:0.128 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #2 â€“ South Driveway Total Pervious Area:0.058 Total Impervious Area:0.07 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #2 â€“ South Driveway Return Period Flow(cfs) 2 year 0.004301 5 year 0.006598 10 year 0.008369 25 year 0.010903 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 29 50 year 0.013014 100 year 0.015322 Flow Frequency Return Periods for Mitigated. POC #2 â€“ South Driveway Return Period Flow(cfs) 2 year 0.04476 5 year 0.064193 10 year 0.079057 25 year 0.100253 50 year 0.117892 100 year 0.137198 ___________________________________________________________________ Water Quality BMP Flow and Volume for POC #2 - South Driveway On-line facility volume: 0.0102 acre-feet On-line facility target flow: 0.0129 cfs. Adjusted for 15 min: 0.0129 cfs. Off-line facility target flow: 0.0072 cfs. Adjusted for 15 min: 0.0072 cfs. ___________________________________________________________________ Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 30 Conveyance Sizing The conveyance pipes on the site were checked for the 25-year storm on the site. The table below reflects various pipe diameters, slopes and capacities. Runoff was calculated using 15-minute timesteps in WWHM. In general catch basins immediately connect to infiltration trenches without collecting significant runoff areas, but there are several places where this is not the case. In basin 2A extended runs of piping collecting roof drains from several buildings is needed. Conveyance Capacity 4-inch 6-inch 8-inch 10-inch 12-inch Slope (ft/ft) 0.005 0.13 0.40 0.87 1.55 2.52 0.010 0.19 0.56 1.23 2.20 3.57 0.015 0.23 0.69 1.50 2.69 4.37 0.020 0.27 0.79 1.74 3.11 5.05 0.025 0.30 0.89 1.94 3.47 5.65 0.030 0.33 0.97 2.13 3.81 6.18 0.035 0.36 1.05 2.30 4.11 6.68 0.040 0.38 1.12 2.46 4.39 7.14 0.045 0.40 1.19 2.60 4.66 7.57 0.050 0.43 1.26 2.75 4.91 7.98 0.055 0.45 1.32 2.88 5.15 8.37 0.060 0.47 1.38 3.01 5.38 8.75 0.065 0.49 1.43 3.13 5.60 9.10 0.070 0.50 1.49 3.25 5.81 9.45 0.075 0.52 1.54 3.36 6.02 9.78 0.080 0.54 1.59 3.47 6.21 10.10 0.085 0.56 1.64 3.58 6.40 10.41 0.090 0.57 1.68 3.68 6.59 10.71 0.095 0.59 1.73 3.78 6.77 11.01 0.100 0.60 1.78 3.88 6.95 11.29 Table A-1: Conveyance Capacity Table Basin 2 Overflow Sizing Flow Frequency Predeveloped Inflow to Mitigated Mitigated Flow(cfs) 0501 15m 0701 15m 0801 15m 25 Year = 0.6077 1.8815 0.0000 100 Year = 0.8553 2.3452 0.0000 Two 12â€ overflow pipes are provided from the infiltration trenches, with the minimum slope on either being 0.5% connecting from the site into the City storm system on 67th. The conveyance capacity of one 12â€ pipe at that flow (2.52 cfs) exceeds the 100-year mitigated flow for the site (2.34 cfs). 6â€ Roof Drain Capacity Check 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Appendix A, Page 31 Flow Frequency for 6,000 sf building Flow(cfs) Predeveloped Mitigated 25 Year = 0.0111 0.1350 100 Year = 0.0156 0.1751 6â€ conveyance pipes are shown on the plans for all roof drains around each building. With 6,000 sf of roof area used as a conservative typical condition, the roof drain tightlines will convey the 100-Year storm from each building even if the pipe is set at just 0.5%. The mitigated flow from this area is 0.17 cfs, while the 6â€ pipe can convey 0.40 cfs. Site Basin 2A, Upstream of Infiltration Areas In general catch basins on this site pick up small areas and immediately convey into the large infiltration beds distributed throughout the site, but Site Basin 2A includes a significant portion of the site where infiltration was not used due to infeasibility concerns noted in the geotechnical report. This area is on the easternmost side of the site 1.49 acres and includes buildings K, L and M. Total: 64,929 sf 1.490 ac Roof: 13,884 sf 0.318 ac Sidewalk: 9,069 sf 0.208 ac Parking: 15,666 sf 0.359ac Landscaping: 26,310 sf 0.605ac Flow Frequency Flow(cfs) Predeveloped Mitigated 25 Year = 0.1269 1.2030 100 Year = 0.1784 1.6322 Conveyance pipes in this basin were set at a 1.0% minimum and 8â€ in diameter to properly convey the 25-year design storm into the infiltration trenches. Another large portion includes the narrower site driveway between buildings F, G, and H. Due to tuck under parking running right up alongside the drive isle, adequate separation was not there for infiltration beds, leading to longer runs collection more area. Total: 20,516 sf 0.471 ac Roof: 5,837 sf 0.134 ac Sidewalk: 2,144 sf 0.049 ac Parking: 9,134 sf 0.209 ac Landscaping: 3,488 sf 0.079ac Flow Frequency Flow(cfs) Predeveloped Mitigated 25 Year = 0.0401 0.4425 100 Year = 0.0564 0.5821 The 8â€ pipes being collected flow into the infiltration trenches and will function as expected at 0.5% slopes or more. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 11-21-2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved 1. NEH The grade of the driveways off 67th are about 8%. Profiles depicting vertical curves added to Please evaluate the transition from the ADA walkway sheet C3.7 to the 8% and then back to the flat driveway areas to ensure there will not be issues with cars bottoming out. Consider designing vlm ertical curves to smooth transition. This needs to be added to the plans. 2. NEH Distance between CB G2 and 12 is long and fairly flat, Added (I-4 on C3.5). OWS added to this CB. consider adding CB to ensure drainage. Add an OWS to this CB. 3. NEH Public and Private landscaping costs need to be added Added. Cost Worksheet included in resubmittal. to the Construction Cost Worksheet. Both were on the worksheet, although the private landscaping was in the Public column. This is moved and the numbers corrected accordingly. 4. NEH Based on the most recent WSDOT roundabout layout Noted. A right turn only sign and a painted the southern interest will need to be RT in/RT out right turn arrow are added to the plan, C6.2 5. NCF- Fire Fire department connections (FDCs) shall NOT be Noted. Remote FDCs removed. Fire Sprinkler Complete MM remote for this project. FDCs shall be a single inlet sizing was determined to be 4â€. Highlighted installed on the exterior wall of each fire sprinkler comments riser closet on each building. Sprinkler designer shall are ADDITIONAL COMMENT SENT VIA EMAIL calculate size of FDC inlet needed and get approval approved (NEH): from AFD after sprinkler permit applied for. as a The Fire Marshal is asking for 2.5â€ (female) FDC condition. hook-up on the exterior of the buildings just outside the sprinkler riser room for this project. Unless there is some kind of difficult terrain that would make it difficult to access, in that case it should be stand alone, but still a 2.5â€ size. Indicate they are painted red. Page 1 of 2 18204 59th Avenue NE REVIEW COMMENT FORM Arlington, WA 98223 360-403-3551 Project Name: CENTENNIAL PARK Permit No.: PWD#1860 Review Date: 11-21-2019 Contact: Michael-Dykeman Phone No.: Review Phase: 1 Report Date: Jared-CG 425.259.3161/425.355.0353 Reviewing Dept.: CED Applicant: Michael Stevens DWG Issue Date: # Rev. Dwg. or Addâ€™l Ref. City Comment Response/Resolution Spec. Ref. Approved RESPONSE: Note indicating size and color added to C4.1. FDCs shown on exterior of sprinkler room added on C4.2 thru C4.5. Noted. We have added to our C4.1 note from the previous response. 6. NCF- Fire Fire lanes shall be marked in accordance with AMC Fire Lane Markings and lanes called out (See Complete MM 15.10.070 Section 503.3. C6.1, we have left off of other sheets for plan Highlighted clarity). Noted. comment is approved as a condition 7. LP All sheets Change construction approval block to Development Revised as noted. The large block only is now Services Block. Large block on the front page and on the front page. small on all others. Page 2 of 2 CONTRUCTION PLAN REVIEW & INSPECTION FEE WORKSHEET Community & Economic Development Department 18204 59th Avenue NE City of Arlington ï¬ ï¬ Arlington WA 98223 ï¬ (360) 403-3551 This form is to be completed and submitted with Type I , Type II Type III Construction Permit Application. 1) Based on permit type requested (Type I, Type II or Type III), complete the form as follows: ï¬ Type I permits complete all sections. ï¬ Type II permits complete as follows: - Grading Only - Complete Temporary Erosion and Sediment Control (TESC). - Stormwater Drainage Only - Complete the Temporary Erosion and Sediment Control and Stormwater Drainage Section for Public or Private ï¬ Type III permits complete the Temporary Erosion and Sediment Control (TESC). 2) The developer shall enter the quantities shown on the construction drawings into the Construction Calculation Worksheet. This document is used to determine the amount of plan reivew and inspection fees due to the city. 3) Excel will auto-calculate the relevant fields and subtotals throughout the document. Only the 'Quantity' columns should be completed. 4) The summary page calculates the fees due at intake for Civil and Stormwater Drainage construction permits only. This does not include fees for Grading or those required by other departments or agencies. Grading fees are based on Cubic Yard Quantity and shall be calculated at time of permit submittal. Grading fees shall be paid at permit submittal. 5) If an item that is part of your project does not exist in the spreadsheet complete the Write-In-Items section with the item, quantity and associated unit cost. There are a few unit prices that are blank, please complete them accordingly. 6) Inspection fees shall be calculated for Private Development during the review process and shall be paid upon permit issuance. PROJECT COSTS PUBLIC TOTAL PRIVATE TOTAL TOTAL PROJECT COST $ 143,105.63 $ 2,450,356.25 $ 2,593,461.88 OK PLAN REVIEW & INSPECTION FEES PLAN REVIEW & INSPECTION FEE (6% of Project Value) $ - GRADING FEE (4) (Cubic Yard ) $ - Review fees due at time of submittal Total Review Fees Due $ - An Assurance Device such as a Performance Bond or Assignment of Funds needs to be on file with the City of Arlington prior to permit issuance. The Assurance Device shall be 150% of the Construction Calculation Worksheet which are as follows: ï¬ Road and Alley (Public) ï¬ Stormwater Drainage and Grading (Public) ï¬ Utilities (Public) ï¬ Temporary Erosion and Sediment Control (Public and Private) ASSURANCE DEVICE Base Calculation of Performance Device $ 143,105.63 PERFORMANCE DEVICE 150% Amount Due $ 214,658.44 Base Calculation of Maintenance Device $ 80,529.38 MAINTENANCE DEVICE 20% Amount Due $ 16,105.88 1 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET TEMPORARY EROSION & SEDIMENT CONTROL Include Public Improvements & Private Development Description Unit Price Unit Quantity Cost Reference # Backfill & compaction-embankment $ 6.50 CY $ - Check dams $ 78.00 EACH 4 $ 312.00 BMP C207 Catch Basin Protection $ 35.50 EACH 15 $ 532.50 Crushed surfacing 1 1/4" minus $ 18.00 TON $ - WSDOT 9-03.9(3) Ditching $ 8.00 CY $ - Excavation-bulk $ 3.00 CY $ - Fence, silt $ 2.00 LF 2090 $ 4,180.00 BMP C233 Fence, Temporary (NGPA) $ 2.00 LF $ - Geotextile Fabric $ 2.50 SY $ - Hay Bale Silt Trap $ 0.50 EACH $ - Hydroseeding $ 4,200.00 ACRE $ - BMP C120 Interceptor Swale / Dike $ 1.00 LF 400 $ 400.00 Jute Mesh $ 2.00 SY $ - BMP C122 Level Spreader $ 1.75 LF $ - Mulch, by hand, straw, 3" deep $ 3.00 SY $ - BMP C121 Mulch, by machine, straw, 2" deep $ 1.00 SY $ - BMP C121 Piping, temporary, CPP, 6" $ 12.50 LF 105 $ 1,312.50 Piping, temporary, CPP, 8" $ 19.00 LF $ - Piping, temporary, CPP, 12" $ 24.00 LF 30 $ 720.00 Plastic covering, 6mm thick, sandbagged $ 3.00 SY $ 10,000.00 BMP C123 Rip Rap, machine placed; slopes $ 50.00 CY $ - WSDOT 9-13.1(2) Rock Construction Entrance, 50'x15'x1' $ 1,800.00 EACH $ - BMP C105 Rock Construction Entrance, 100'x15'x1' $ 3,600.00 EACH 1 $ 3,600.00 BMP C105 Sediment pond riser assembly $ 3,050.00 EACH 1 $ 3,050.00 BMP C241 Sediment trap, 5' high berm $ 21.00 LF 422 $ 8,862.00 BMP C240 Sed. trap, 5' high, riprapped spillway berm section $ 79.00 LF 108 $ 8,532.00 BMP C240 Seeding, by hand $ 1.00 SY $ - BMP C120 Sodding, 1" deep, level ground $ 8.00 SY $ - BMP C120 Sodding, 1" deep, sloped ground $ 9.50 SY $ - BMP C120 TESC Supervisor $ 84.00 HR 40 $ 3,360.00 Water truck, dust control $ 130.00 HR 40 $ 5,200.00 BMP C140 WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - SUBTOTAL (TESC Only): $ 50,061.00 MOBILIZATION 10%: $ 5,006.10 CONTINGENCY 15%: $ 7,509.15 TOTAL: $ 62,576.25 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET GENERAL ITEMS Public Improvements Description Unit Price Unit Quantity Cost Backfill & Compaction- embankment $ 8.00 CY $ - Backfill & Compaction- trench $ 11.00 CY 14 $ 154.00 Clear/Remove Brush, by hand (acre) $ 2,363.00 ACRE $ - Bollards - fixed $ 325.00 EACH $ - Bollards - removable $ 600.00 EACH $ - Clearing/Grubbing/Tree Removal $ 6,000.00 ACRE $ - Excavation - bulk $ 2.50 CY $ - Excavation - Trench $ 5.00 CY 27 $ 135.00 Fencing, cedar, 6' high $ 25.00 LF $ - Fencing, chain link, 4' $ 19.50 LF $ - Fencing, chain link, vinyl coated, 6' high $ 18.00 LF $ - Fencing, chain link, gate, vinyl coated, 20' $ 1,563.00 EACH $ - Fencing, split rail, 3' high $ 14.00 LF $ - Fill & compact - common barrow $ 27.00 CY $ - Fill & compact - gravel base $ 30.00 CY $ - Fill & compact - screened topsoil $ 45.00 CY $ - Gabion, 12" deep, stone filled mesh $ 62.00 SY $ - Gabion, 18" deep, stone filled mesh $ 86.00 SY $ - Gabion, 36" deep, stone filled mesh $ 152.00 SY $ - Grading, fine, by hand $ 2.00 SY 500 $ 1,000.00 Grading, fine, with grader $ 1.25 SY 1000 $ 1,250.00 Guard Post $ 90.00 EACH $ - Monuments $ 104.00 EACH $ - Sensitive Areas Sign $ 20.00 EACH $ - Sodding, 1" deep, sloped ground $ 10.00 SY $ - Topsoil Type A (imported) $ 30.00 CY $ - Traffic control crew ( 2 flaggers ) $ 98.00 HR $ - Trail, 4" chipped wood $ 9.00 SY $ - Trail, 4" crushed cinder $ 10.00 SY $ - Trail, 4" top course $ 9.50 SY $ - Wall, retaining, concrete $ 66.00 SF $ - Wall, rockery $ 13.00 SF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 2,539.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET IMPROVEMENT Public Improvements Description Unit Price Unit Quantity Cost AC Grinding, 4' wide machine < 1000sy $ 35.00 SY $ - AC Grinding, 4' wide machine 1000-2000sy $ 8.50 SY $ - AC Grinding, 4' wide machine > 2000sy $ 2.50 SY $ - AC Removal/Disposal/Repair $ 60.00 SY $ - Barricade, Type I $ 36.00 LF $ - Barricade Type II $ 25.00 LF $ - Barricade, Type III ( Permanent ) $ 55.00 LF $ - Conduit, 2" $ 5.00 LF $ - Curb & Gutter, rolled $ 20.00 LF $ - Curb & Gutter, vertical $ 15.00 LF 667 $ 10,005.00 Curb and Gutter, demolition and disposal $ 20.00 LF 110 $ 2,200.00 Curb, extruded asphalt $ 5.00 LF $ - Curb, extruded concrete $ 4.50 LF $ - Guard Rail $ 30.00 LF $ - Sawcut, asphalt, 3" depth $ 3.50 LF 667 $ 2,334.50 Sawcut, concrete, per 1" depth $ 3.00 LF $ - Sealant, asphalt $ 2.00 LF $ - Shoulder, gravel, 4" thick $ 11.00 SY $ - Sidewalk, 4" thick $ 40.00 SY $ - Sidewalk, 4" thick, demolition and disposal $ 36.00 SY $ - Sidewalk, 6" thick $ 45.00 SY 593 $ 26,685.00 Sidewalk, 6" thick, demolition and disposal $ 45.00 SY $ - Signs $ - LS $ - Sign, Handicap $ 100.00 EACH $ - Striping, per stall $ 7.50 EACH $ - Street Light System $ - LS $ - Traffic Signal $ - LS $ - Traffic Signal Modification $ - LS $ - Striping, thermoplastic, ( for crosswalk ) $ 3.50 SF $ - Striping, 4" reflectorized line $ 0.40 LF $ - AC Patching/Trenching Restoration $ 100.00 TON $ - Controlled Density Fill (CDF) $ 90.00 CY $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 41,224.50 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET SURFACING/PAVEMENT Public Improvements Description Unit Price Unit Quantity Cost Asphalt Overlay, 1.5" AC $ 12.00 SY $ - Asphalt Overlay, 2" AC $ 15.00 SY $ - Asphalt Road 2", First 2500 SY $ 10.00 SY $ - Asphalt Road 2", Qty. over 2500SY $ 9.00 SY $ - Asphalt Road 3", First 2500 SY $ 15.00 SY $ - Asphalt Road 3", Qty. over 2500 SY $ 13.00 SY $ - Asphalt Road 5", First 2500 SY $ 22.00 SY $ - Asphalt Road 5", Qty. Over 2500 SY $ 22.00 SY $ - Asphalt Road 6", First 2500 SY $ 25.00 SY $ - Asphalt Road 6", Qty. Over 2500 SY $ 24.00 SY $ - Asphalt Treated Base, 4" thick $ 14.00 SY $ - Gravel Base Course 2" $ 7.50 SY $ - Gravel Base Course 4" $ 15.00 SY $ - Gravel Base Course 6" $ 22.50 SY $ - Gravel Road, 4" rock, First 2500 SY $ 15.00 SY $ - Gravel Road, 4" rock, Qty. over 2500 SY $ 11.00 SY $ - Concrete Road, 5", no base, over 2500 SY $ 22.00 SY $ - Concrete Road, 6", no base, over 2500 SY $ 32.00 SY $ - Thickened Edge $ 11.00 LF $ - WRITE-IN-ITEMS Gravel Base Course 9" $ 33.75 SY $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET WATER SYSTEM Public Improvements Description Unit Price Unit Quantity Cost Blowoff $ 1,800.00 EACH $ - Connection to Existing Water Main $ 2,000.00 EACH 1 $ 2,000.00 Ductile Iron Watermain, CL 52, 6 Inch Dia $ 65.00 LF $ - Ductile Iron Watermain, CL 52, 8 Inch Dia $ 85.00 LF $ - Ductile Iron Watermain, CL 52, 10 Inch Dia $ 103.00 LF $ - Ductile Iron Watermain, CL 52, 12 Inch Dia. $ 125.00 LF $ - Gate Valve, 6 inch Dia $ 250.00 EACH $ - Gate Valve, 8 Inch Dia $ 380.00 EACH $ - Gate Valve, 10 Inch Dia $ 425.00 EACH $ - Gate Valve, 12 Inch Dia $ 500.00 EACH $ - Fire Hydrant Assembly, with Guard Posts $ 3,000.00 EACH $ - Fire Hydrant Assembly, without Guard Posts $ 2,500.00 EACH 1 $ 2,500.00 Air-Vac, 8 Inch Dia $ 6,000.00 EACH $ - Air-Vac,10 Inch Dia $ 7,500.00 EACH $ - Air-Vac, 12 Inch Dia $ 12,000.00 EACH $ - Pressure Reducing Valve Assembly, 8 In. Dia $ 3,800.00 EACH $ - Pressure Reducing Valve Assembly, 10 In. Dia $ 4,200.00 EACH $ - Pressure Reducing Valve Assembly, 12 In. Dia $ 5,000.00 EACH $ - Valve Marker Post $ 350.00 EACH $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - Subtotal $ 4,500.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET SANITARY SEWER Public Improvements Description Unit Price Unit Quantity Cost Connection to Existing Sewer Main $ - EACH $ - Clean Outs $ 500.00 EACH $ - Grease Interceptor, 500 gallon $ 6,000.00 EACH $ - Grease Interceptor, 1000 gallon $ 10,000.00 EACH $ - Grease Interceptor, 1500 gallon $ 15,000.00 EACH $ - Side Sewer Pipe, PVC. 4 Inch Dia $ 8.00 LF $ - Side Sewer Pipe, PVC. 6 Inch Dia $ 12.00 LF $ - Sewer Pipe, PVC, 8 inch Dia $ 33.00 LF $ - Sewer Pipe, PVC, 12 Inch Dia $ 41.00 LF $ - Sewer Pipe, PVC, _10_ Inch Dia $ 38.00 LF $ - Lift Station (Entire System) $ - LS $ - Manhole, 48 Inch Dia $ 3,000.00 EACH 1 $ 3,000.00 for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 54 Inch Dia $ 3,500.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 60 Inch Dia $ 3,700.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 72 Inch Dia $ 4,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Manhole, 96 Inch Dia $ 5,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Outside Drop $ - LS $ - Inside Drop $ - LS $ - Pipe, C-900 $ 90.00 LF $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 3,000.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET LANDSCAPING & VEGETATION Include Public Improvements & Priva Description Unit Price Unit Quantity Cost Street Trees $ 500.00 EACH 14 $ 7,000.00 Root Barrier $ 150.00 EACH 14 $ 2,100.00 Median Landscaping NA LS NA Right-of-Way Landscaping $ 3,248.00 sf 1.25 $ 4,060.00 Wetland Landscaping $ - LS $ - Private Landscaping $ 375,000.00 LS $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 13,160.00 (INCLUDES GENERAL, STREET, SURFACING, WATER, SEWER, PUBLIC LANDSCAPING) SUBTOTAL $ 64,423.50 MOBILIZATION 10%: $ 6,442.35 CONTINGENCY 15%: $ 9,663.53 GRANDTOTAL: $ 80,529.38 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STORMWATER DRAINAGE Public Private Public Improvements Private Development Description Unit Price Unit Quantity Cost Quantity Cost Access Road, Retention / Detention $ 26.00 SY $ - $ - * (CBs include frame and lid) Beehive $ 90.00 EACH $ - $ - CB Type I $ 1,650.00 EACH $ - $ - CB Type IL $ 1,850.00 EACH $ - 19 $ 35,150.00 CB Type II, 48" Dia $ 2,550.00 EACH $ - $ - for additional depth over 4' $ 650.00 FT $ - $ - CB Type II, 54" Dia $ 2,700.00 EACH $ - $ - for additional depth over 4' $ 600.00 FT $ - $ - CB Type II, 60" Dia $ 2,900.00 EACH $ - $ - for additional depth over 4' $ 750.00 FT $ - $ - CB Type II, 72" Dia $ 4,000.00 EACH $ - $ - for additional depth over 4' $ 900.00 FT $ - $ - Through-curb Inlet Framework (Add) $ 550.00 EACH $ - $ - Cleanout, PVC, 4" $ 200.00 EACH $ - $ - Cleanout, PVC, 6" $ 250.00 EACH $ - $ - Cleanout, PVC, 8" $ 300.00 EACH $ - $ - Culvert, Box __ ft x __ ft $ - LS $ - $ - Culvert, PVC, 4" $ 12.00 LF $ - 5996 $ 71,952.00 Culvert, PVC, 6" $ 17.00 LF $ - 12,059 $ 205,003.00 Culvert, PVC, 8" $ 19.00 LF $ - $ - Culvert, PVC, 10" $ 25.00 LF $ - $ - Culvert, PVC, 12" $ 30.00 LF $ - 453 $ 13,590.00 Culvert, CMP, 8" $ 23.00 LF $ - $ - Culvert, CMP, 12" $ 35.00 LF $ - $ - Culvert, CMP, 15" $ 42.00 LF $ - $ - Culvert, CMP, 18" $ 47.00 LF $ - $ - Culvert, CMP, 24" $ 69.00 LF $ - $ - Culvert, CMP, 30" $ 100.00 LF $ - $ - Culvert, CMP, 36" $ 150.00 LF $ - $ - Culvert, CMP, 48" $ 194.00 LF $ - $ - Culvert, CMP, 60" $ 310.00 LF $ - $ - Culvert, CMP, 72" $ 400.00 LF $ - $ - Culvert, Concrete, 8" $ 36.00 LF $ - $ - Culvert, Concrete, 12" $ 43.00 LF $ - $ - Culvert, Concrete, 15" $ 52.00 LF $ - $ - Culvert, Concrete, 18" $ 55.00 LF $ - $ - Culvert, Concrete, 24" $ 85.00 LF $ - $ - Culvert, Concrete, 30" $ 136.00 LF $ - $ - Culvert, Concrete, 36" $ 165.00 LF $ - $ - Culvert, Concrete, 42" $ 196.00 LF $ - $ - Culvert, Concrete, 48" $ 210.00 LF $ - $ - Culvert, CPP, 6" $ 16.00 LF $ - $ - Culvert, CPP, 8" $ 22.00 LF $ - $ - Culvert, CPP, 12" $ 28.00 LF $ - $ - Culvert, CPP, 15" $ 34.00 LF $ - $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Culvert, CPP, 18" $ 39.00 LF $ - $ - Culvert, CPP, 24" $ 49.00 LF $ - $ - Culvert, CPP, 30" $ 62.00 LF $ - $ - Culvert, CPP, 36" $ 69.00 LF $ - $ - Ditching $ 12.00 CY $ - $ - Flow Dispersal Trench (1,436 base+) $ 40.00 LF $ - $ - French Drain (3' depth) $ 39.00 LF $ - $ - Geotextile, laid in trench, polypropylene $ 5.00 SY $ - 4623 $ 23,115.00 Infiltration pond testing $ 125.00 HR $ - $ - Mid-tank Access Riser, 48" dia, 6' deep $ 2,025.00 EACH $ - $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - $ - Pipe, C900 $ 90.00 LF $ - $ - Pond Overflow Spillway $ 18.00 SY $ - $ - Restrictor/Oil Separator, 12" $ 1,500.00 EACH $ - $ - Restrictor/Oil Separator, 15" $ 1,550.00 EACH $ - $ - Restrictor/Oil Separator, 18" $ 1,680.00 EACH $ - $ - Riprap, placed $ 52.00 CY $ - $ - Tank End Reducer (36" Dia) $ 1,280.00 EACH $ - $ - Thru-Inlet at CB $ 150.00 EACH $ - $ - Trash Rack, 12" $ 320.00 EACH $ - $ - Trash Rack, 15" $ 325.00 EACH $ - $ - Trash Rack, 18" $ 350.00 EACH $ - $ - Trash Rack, 21" $ 375.00 EACH $ - $ - WRITE-IN-ITEMS 18" Concrete Yard Drain $ 250.00 LF $ - 21 $ 5,250.00 Culvert, PVC, 24" $ 60.00 LF $ - 260 $ 15,600.00 LF $ - $ - LF $ - $ - SUBTOTAL: $ - $ 369,660.00 MOBILIZATION 10%: $ - CONTINGENCY 15%: $ - TOTAL: $ - $ 369,660.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Rev 7/2017 Geotextile syardage R/F pipe co 270 3 90 20 1800 3 60 300 180 3 60 20 1200 3 60 147 150 3 50 20 1000 3 60 305 180 3 60 40 2400 3 120 309 165 3 55 30 1650 3 90 339 180 3 60 20 1200 3 60 316 330 3 110 30 3300 3 90 305 60 3 20 20 400 3 60 306 180 3 60 30 1800 3 90 483 525 3 175 20 3500 3 60 384 240 3 80 40 3200 3 120 384 120 3 40 20 800 3 60 385 630 3 210 20 4200 3 60 345 150 3 50 30 1500 3 90 340 420 3 140 20 2800 3 60 339 210 3 70 30 2100 3 90 120 3 40 30 1200 3 90 270 3 90 20 1800 3 60 4380 35850 1380 4987 3983.333 6520 sf 41610 535 sy 4623.333 606 infil trench pipe count 343 pipe count pipe lengthpipe count pipe width total pipe length 12059 101 2 80 2 10 180 102 2 50 4 10 140 102.1 2 40 12 10 200 103 4 50 2 30 260 104 3 45 2 20 175 105 2 50 2 10 120 106 3 100 2 20 340 106.1 2 10 20 106.2 3 50 2 20 190 107 2 165 2 30 390 108 4 70 2 30 340 108.1 2 30 2 20 100 109 2 200 2 10 420 110 2 40 2 20 120 111 3 130 2 10 410 112 2 60 2 20 160 112.1 3 30 2 30 150 113 4 80 2 10 340 4055 perf 6" ount wall 4" pvc 1009 4" perf pipe 5996 4" perf pvc 6" pipe for roof 6" pipe from roof to cb 6"pipe between trenches 6" pipe between cbs February 26, 2020 Project No. 19-0659 Williams Investments 2517 Colby Avenue Everett, WA 98201 Attention: Mr. Ryan Kilby Regarding: Cut-Off Trench Review Centennial Park Townhomes NE Corner of 67th Avenue NE and State Route 531 Arlington, WA 98223 GeoTest Services Inc. (GeoTest) understands that a cut-off trench is being considered for the eastern portion of the site. GeoTest has been asked by the City of Arlington to provide our opinions on potential impacts to the wetland as a result of the cut-off trench and, where appropriate, provide recommendations for reducing impacts to the wetland. GeoTest has previously completed a Geotechnical Engineering report, titled Geotechnical Engineering Report, Proposed Centennial Park Townhomes, NE Corner of 67th Avenue NE and State Route 531, Arlington, WA 98223, dated May 17, 2019 for the above-referenced property. Background Information GeoTest was provided a copy of the report titled Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan, dated June 28, 2019 and prepared by Soundview Consultants LLC. The report identifies the wetland in question as â€œWetland Aâ€ and states that the hydrology for Wetland A is provided by a seasonally-high water table, precipitation, surface runoff from adjacent uplands, and flow from ditches that historically ran through the wetland. To paraphrase, the report states that Wetland A provides moderately high water quality functions and can provide some pollutant filtration due to the type of vegetative cover. The report also states that Wetland A provides relatively low hydrologic and habitat functions based on the small size of the wetland, minimal amount of vegetative cover, lack of priority habitats, and the presence of invasive species within the wetland. GeoTest was also provided a copy of an updated Civil plan prepared by CG Engineering, dated February 14, 2020. This plan shows the location of the proposed cut-off trench, along with the tightlined portion of the pipe transporting collected water from the trench to the designated discharge area in the northwestern portion of the Wetland A buffer area. The Civil plan directs 1 GeoTest Services, Inc. February 26, 2020 Centenial Townhomes, Arlington, WA Project Number 19-0659 foundation drain discharge for the entirety of Building K into the wetland buffer to the east of Wetland A. Pre-development Conditions A review of previously submitted and accepted documents suggest that the sloping hillside to the east of the pre-developed property conveyed off-site surface water contributions generally west across the project site. An existing man-made swale, documented in the Soundview Report and Civil site plans, ran north across the central third of the property, generally picking up and conveying collected water flows towards Wetland A in the northern portion of the property. Per the Soundview report, an existing ditch runs east to west across the northern property boundary, conveying water off site near the intersection of 67th Avenue and Highland View Drive. Also, a channel runs east to west across the southern property boundary, just north of State Route 531. Post-Development Conditions The submitted and approved construction plan is being augmented to include a cut-off trench that runs south to north along the eastern portion of the project site. The cut-off trench is intended to pick up and collect perched water that exists directly upslope from a number of planned infiltration facilities. The bottom of the infiltration facilities are generally at elevation 136, with the bottom of the cut-off trench being placed somewhere between elevations 137 and 139 per the Civil plan. The trench will span approximately 320 lineal feet, will be placed below drive paths in the eastern portion of the site, and will cross and eventually discharge into the wetland buffer in the northern portion of the project site. Current development plans indicate that the foundation drain from Building K will be collected and discharged into the buffer directly east of Wetland A. This contribution will bypass the cut- off trench. Potential Impacts to Wetland A The proposed cut-off trench extends below paved surfaces in the upslope, eastern portion of the project site, with the vast majority of the trench existing well south of Wetland A. During our review, GeoTest noted that only 23 feet of the cut-off trench extended north of the southern- most edge of Wetland A. See Figure 1. If just the cut-off trench with no mitigation is considered, ignoring contributions from the foundation drains for Building K, it is possible that the very southern edge of the wetland would be impacted by the cut-off trench through the collection of up-slope water that would have otherwise passed under/through Wetland A. 2 GeoTest Services, Inc. February 26, 2020 Centenial Townhomes, Arlington, WA Project Number 19-0659 Figure 1: Potentially Impacted Area Downslope of Cut-Off Trench Due to the relatively minor encroachment of the cut-off drain to areas up-slope of Wetland A, it is difficult to say with certainty that the wetland would be negatively impacted by the presence of the cut-off trench. Notably, the south-to-north man-made swale in the central portion of the property under pre-development conditions is within 100 horizontal feet of the proposed location of the cut-off trench. The bottom of the cut-off trench (elevation 137 to 139) is also within 1 to 3 vertical feet of the bottom of the south-to-north man-made swale (approximate elevation of 140â€™) based on a review of the undeveloped property topography. Thus, the location and vertical alignment of the bottom of the cut-off trench is reasonably close to the pre- development swale location and elevation. Based on our review of the project information, it is prudent to provide reasonable mitigations and/or enhancements to the wetland and buffer area during the construction process. Mitigation and Enhancements to Wetland A Wetland mitigation efforts currently include routing the foundation drains for Building K into the buffer for Wetland A. Building K is approximately 115 feet long, is located east of Wetland A, and will be constructed upslope of the proposed cut-off trench. Notably, the northern end of the cut- off trench extends 23 feet north of the southern-most delineated portion of Wetland A. Thus, the length of the foundation drain for Building K (currently measured at 115 feet long) is greater than the length of the cut-off trench that is being constructed above the wetland. See Figure 2. 3 GeoTest Services, Inc. February 26, 2020 Centenial Townhomes, Arlington, WA Project Number 19-0659 Figure 2: Building K Foundation Drain Discharge Into Wetland A Buffer. In addition to discharging foundation drain contributions from Building K into the buffer for Wetland A, GeoTest recommends that the last 30 feet of the cut-off trench consist of solid pipe and be backfilled with native site materials. The intent of our recommendations is to provide similar soil conditions under developed conditions as those that existed under pre-developed conditions directly upslope from Wetland A. Stated differently, by removing the perforated pipe and backfilling with native soil, it can reasonably be expected that the cut-off trench, over the 30 horizontal feet where this approach is taken, will not remove waters that would otherwise end up along the eastern edge of Wetland A. The 2019 Soundview Consultant report indicates that a number of enhancements are planned for the buffer for Wetland A. The enhancements are expected to include the removal of non- native, invasive vegetation and replacing it with native plantings within the buffer. GeoTest understands that these enhancements will be installed and monitored after construction has been completed. Conclusions Our review of project documents indicate that a relatively small portion of Wetland A exists downslope of the cut-off trench. By removing pipe perforations in the last 30 feet of the cut-off trench and backfilling with native soil, it is anticipated that developed conditions will closely match pre-developed conditions directly upslope from Wetland A. By allowing the foundation drain for Building K to discharge into the buffer east of Wetland A, water is being placed directly 4 GeoTest Services, Inc. February 26, 2020 Centenial Townhomes, Arlington, WA Project Number 19-0659 into the buffer and will maintain a general east to west flow pattern across Wetland A. Thus, removing the cut-off trench directly up-slope from Wetland A, allowing water to discharge into the buffer from Building K foundation drains, and the planned vegetative enhancements per the Soundview Consultants report are all expected to have positive contributions to the overall function of Wetland A. The cut-off trench is intended to pick up and convey collected sources of water across the site and to release those waters near the northern property boundary. As previously stated, the location and elevation of the cut-off trench is expected to be reasonably similar as to the pre- development man-made swale that has since been filled. The inclusion of the post-development cut-off trench is expected to largely serve a similar function as the pre-development man-made swale in that both systems convey water across the site and enter into the buffer to the south of Wetland A. The proposed construction plan includes the collection and distribution of stormwater across the project site through a series of infiltration facilities that exist west (downslope) of the proposed cut-off trench. These infiltration facilities are part of the stormwater plan for the site and are intended for mitigating overall site development and vegetation loss. The introduction of collected stormwater into the ground through infiltration is not expected to impact or influence Wetland A. Finally, the existing drainage ditch along the northern property boundary and the channel located along the southern property boundary are not being altered as part of the construction plan. Thus, similar function of the drainage ditch and existing channel conveying water from east to west across the northern and southern extents of the property will be maintained. Closure Our opinions regarding potential impacts and the provided mitigation recommendations have been peer reviewed by both the Civil Engineer and Land-Use/Environmental Planner. The intent for Civil review was to confirm that elevations for the cut-off drain and tightlined portion of the discharge pipe are correct, and to confirm that foundation drains for Building K are being discharged into the buffer for Wetland A. The intent for the Land-Use/Environmental Planner review was to provide support and input that the discharge from the foundation drain into the buffer of Wetland A would likely only require local jurisdiction review (City of Arlington) as the disturbance is not anticipated to negatively impact the wetland due to additional hydrology input from the Building K foundation drains into the buffer area. GeoTest is not aware of any additional enhancements or mitigations that would be needed for Wetland A in order to allow for the installation of the cut-off drain at the locations shown on the February 14, 2020 Civil plan. 5 GeoTest Services, Inc. February 26, 2020 Centenial Townhomes, Arlington, WA Project Number 19-0659 Should you have any further questions regarding the information contained within the letter, or if we may be of service in other regards, please contact the undersigned. Respectfully, GeoTest Services, Inc. Edwardo Garcia, P.E. Geotechnical Department Manager 6 DRAINAGE REPORT Centennial Park 67th Ave and 172nd Street NE Arlington, WA 98223 CG Project No.: 18386.20 03/26/20 Updating Approved Report dated 10/21/19 250 4th Ave S Ste 200 Edmonds, WA 98020 Phone: (425) 778-8500 Fax: (425) 778-5536 Table of Contents Section I â€“ Project Overview Section II â€“ Minimum Requirements Section III â€“ Off-Site Analysis Section IV â€“ Permanent Stormwater Control Plan Section V â€“ Construction Stormwater Pollution Prevention Section VI â€“ Special Reports and/or Studies Section VII â€“ Other Permits Section VIII â€“ Operation and Maintenance Manual Appendix A â€“ WWHM Reports 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section I, Page 1 Section I â€“ Project Overview Section I Summary Overview Existing Condition Developed Condition Vicinity Map Aerial Photograph Overview This project is the development of fifteen buildings (mostly for apartments), along with associated driveways, parking, sidewalks, and common areas to an 8.81-acre site at the northeast corner of the 67th Ave and 172nd Street NE Arlington, WA 98223 (TPN: 31052300300800). The predeveloped site was undeveloped, forested along its south and east sides and with a Category IV wetland is located near the northwest corner. There is also a potentially regulated drainage channel on the south side of the site that cannot be altered until permanently declassified. The rest of the site is cleared. In the developed condition, most of the site will be cleared and regraded, excluding some areas near the northeastern corner where the existing wetland is located and the south side where the drainage channel flows through. Two entrances will be off 67th and due to the channel at the south side of the site no entrances will be from 172nd. The project will comply with the 2014 Stormwater Management Manual for Western Washington (herein referred to as the SWMMWW). The project must comply with Minimum Requirements #1-9 of the SWMMWW and must also submit a Construction Stormwater General Permit to the Washington State Department of Ecology because land disturbance will be over an acre. The site is within the Mixed-Use NC-Neighborhood Commercial zone. Surrounding areas include RLMD- Low to Moderate Density Residential to the north and east, GI- General Industrial to the west, and GC- General Commercial to the southwest. The site is at the southern border of the City of Arlington. Existing Condition The site totals 8.81 ac and was undeveloped. It was forested along the south and east sides of the site and has a Category IV wetland is located at the northwest corner. There also is a drainage channel at the south side that will not be altered until permanently declassified. The rest of the site is cleared. In general, the site slopes from east to west with slopes ranging from 2.5% at the west side of the site to 24% at the east side of the site. Most of the site is flat to moderate except for a steep slope near the 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section I, Page 2 east side of the site where there is a maximum slope of about 24%. Per the geotechnical report, the underlying soil underneath 1.5 to 3 feet of fill on the western side of the site is Alluvium/Marysville Sand a medium dense, brown, gravelly sand. On the eastern side of the site it is Advance Outwash a medium dense, to very dense, gravely sand. The soils correspond to hydrologic soil group â€œC.â€ Groundwater was visible in the test pits and borings done for the geotechnical report. In addition to the groundwater table, there is also several instances of perched groundwater nearer the surface. Developed Condition Most of the site will be developed with fifteen apartment and mixed-use buildings along with associated parking, and common areas both indoor and outdoor. Vegetation will be preserved along the perimeter for open space and for community garden space, and an open play area is proposed in the center of the development. Water and sewer mains will be extended into the development, and stormwater will be controlled on site and will overflow to the city infrastructure in 67th Ave NE. Two entrances will be off 67th Ave NE to the west. Street improvements include a new sidewalk and planter strip along 67th Ave NE. As the stream and its buffer are not being impacted no street improvements along 172nd are required. The site totals 6.214 ac in the proposed condition with the dedication area included. The total amount of disturbance on and offsite including the right of way improvements totals 6.329 acres. The proposed lot coverage is as follows: Total Property: 374,517 sf (8.598 ac) Wetland and buffer(excluded): 39,840 sf (0.915 ac) Stream and buffer(excluded): 73,096 sf (1.678 ac) ROW dedication: 9,092 sf (0.209 ac) ROW improvements (beyond dedication area): 5,000 sf (0.115 ac) Total Area Used in Design: 275,673 sf (6.329 ac) Pervious Area Landscaping, Flat, C: 82,109 sf (1.885 ac) Total: 82,109 sf (1.885 ac) Impervious Areas Parking, Flat: 75,665 sf (1.737 ac) Roof, Flat: 63,708 sf (1.463 ac) Sidewalk, Flat: 54,191 sf (1.244 ac) Total: 193,564 sf (4.444 ac) Total Project Site: 275,673 sf (6.329 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section I, Page 3 PROJECT SITE Figure I-1 Vicinity Map 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section I, Page 4 PROJECT SITE Figure I-2 Aerial Photograph 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section II, Page 1 Section II â€“ Minimum Requirements Section II Summary Narrative Stormwater requirements were determined from the 2014 SWMMWW. This report is based on the steps recommended in Chapter 3 of Volume I in the SWMMWW. The project will comply with Minimum Requirements #1-9. Minimum Requirement #1: Preparation of Stormwater Site Plans: The stormwater site plan consists of this report and the civil drawings and is prepared in accordance with Chapter 3 of Volume 1 of the SWMMWW. Minimum Requirement #2: Construction Stormwater Pollution Prevention Plan (SWPPP): The SWPPP shall include a narrative and drawings. The SWPPP narrative shall include documentation that addresses the 13 elements of Construction Stormwater Pollution Prevention. See Section V and the civil drawings. A Construction Stormwater General Permit must also be submitted to the Washington State Department of Ecology because land disturbance will be over an acre. Minimum Requirement #3: Source Control of Pollution: Source control BMPs during construction are described in Section IV. For this site we have looked at the pool for compliance with 2014 SWMMWW S433. Minimum Requirement #4: Preservation of Natural Drainage Systems and Outfalls: Natural drainage patterns shall be maintained, and discharges from the project site shall occur at the natural location, to the maximum extent practicable. The manner by which runoff is discharged from the project site must not cause a significant adverse impact to downstream receiving waters and down-gradient properties. All projects shall submit an off-site qualitative analysis. A qualitative analysis of the upstream and downstream system entering the site is presented in Section III. Minimum Requirement #5: On-Site Stormwater Management: Per Table 2.5.1 from the SWMMWW, new development projects on any parcel inside the Urban Growth Area that trigger Minimum Requirements #1 through #9 must demonstrate compliance with the Low Impact Development Performance Standard and BMP T5.13; or use On-Site Stormwater Management BMPs from List #2. The project proposes to meet the Low Impact Development Standard using gravel infiltration trenches and BMP T5.13. See Section IV. Minimum Requirement #6: Runoff Treatment: This requirement applies to the new plus replaced hard surfaces and the converted vegetation areas. Runoff treatment is required because the project adds more than 5,000 sf of pollution-generating hard surface. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section II, Page 2 Minimum Requirement #7: Flow Control: Projects must provide flow control to reduce the impacts of stormwater runoff from hard surfaces and land cover conversions. The project will meet the flow control duration standard using gravel infiltration trenches designed to infiltrate 100% of site runoff. See Section IV. Minimum Requirement #8: Wetlands Protection: This requirement applies only to projects whose stormwater discharges into a wetland, either directly or indirectly through a conveyance system. Stormwater from the site does not discharge into a wetland and therefore this requirement is not applicable. The Category IV wetland on the north is not anticipated to be the discharge location of the existing site due to the existing layout of the site topography. The existing inflow via a swale along the north property line will be maintained. Minimum Requirement #9: Operation and Maintenance: An Operation and Maintenance Manual that is consistent with the provisions in Volume V of the SWMMWW is required for proposed Stormwater Treatment and Flow Control BMPs/facilities. The party (or parties) responsible for maintenance and operation shall be identified in the operation and maintenance manual. For private facilities, a copy of the Operation and Maintenance Manual shall be retained on-site or within reasonable access to the site and shall be transferred with the property to the new owner. For public facilities, a copy of the operation and maintenance manual shall be retained in the appropriate department. A log of maintenance activity that indicates what actions were taken shall be kept and be available for inspection. Please see Section VIII. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section III, Page 1 Section III â€“ Off-Site Analysis Section III Summary Task 1 â€“ Define and map the study area Task 2 â€“ Review all available information of the study area Task 3 â€“ Field inspect the area Task 4 - Describe the drainage system, and its existing and predicted problems Task 1 â€“ Define and map the study area Development projects that discharge stormwater off-site shall submit an off-site analysis report that assesses the potential off-site water quality, erosion, slope stability, and drainage impacts associated with the project and that proposes appropriate mitigation of those impacts. An initial qualitative analysis shall extend downstream for the entire flow path from the project site to the receiving water or up to one mile, whichever is less. Nearly all runoff from developed areas will be directed to infiltration trenches designed to infiltrate 100% of contributing runoff. The infiltration trenches are designed with the overflow discharge pipes from the trenches connecting to city infrastructure in 67th Ave NE. The overflow paths will be studied in this section. City Infrastructure OVERFLOW CATCH BASINS EXISTING DITCH INFILTRATION EDGECOMB CREEK ONSITE (MIDDLE FORK OF QUILCEDA CREEK) Figure III-1 Study Area from Stormwater Infrastructure Map of City of Arlington. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section III, Page 2 Figure III- 1 depicts the downstream flow path from the site. Existing drainage in 67th Ave flows north and outfalls into a large bioretention pond on the west side of the street. From there through a ditch and culvert system and a piped system the stormwater outfalls into the Edgecomb Creek/Middle Fork Quilceda Creek which outfalls into the Possession Sound (Puget Sound) Task 2 â€“ Review all available information on the study area The project site is currently cleared but does not contain any stormwater improvements. A wetland at the northeast corner will not be impacted by the construction activity. Existing stormwater infrastructure in the adjacent streets was determined from the survey and the Cityâ€™s online maps. The site is within the Edgecomb Creek/Quilceda Creek drainage basin which outlets to the Possession Sound. The north side 172nd Street NE (SR 531) flows into ditch system on the south side of the subject property, and the south side flows into Edgecomb Creek. Edgecomb Creek used to cross SR 531 from south to north in a 36-inch culvert, where it would then flow through the subject property before crossing back under SR 531 again in a 60-inch culvert back to the south side of the road. WSDOT Job Number 16A032 realigned this Creek to be entirely on the south side of the right of way. As part of this work, the 36-inch pipe was abandoned. The 60-inch culvert remains in place. As built drawings from that project are provided in this report. See Figures III-3 and III-4. There are catch basins and conveyance pipes in 67th Ave NE which discharge to the north into stormwater ponds which overflow to the southwest into Edgecomb Creek (Figure III-54). This is the natural direction of the existing site. Stormwater arrives to the 67th Ave NE system primarily by sheet flowing off of the west side of the site, or via the existing ditch system, which conveys some flows around the wetland and toward the 24â€ diameter pipe at the northwest corner of the site. According to the wetland report in Section VI the wetland at the northeast corner of the site is a Type IV wetland. The wetland will not be impacted during construction, and its buffer will only be impacted as allowed by the wetland report by Soundview Consultants. Task 3 â€“ Field inspect the study area A site visit was conducted on May 29, 2019. Weather was warm and rain had not recently occurred. The area reviewed was the site (with emphasis on the onsite ditch that was previously a portion of Edgecomb Creek), SR 531, 67th, and several nearby drainage areas and culverts. The on-site drainage channel takes flows from the north side of SR 531 for roughly four thousand feet upstream of the project. These entire the site via a ditch system from the Atonement Free Lutheran Church. Edgecomb Creek no longer flows through the site, so on the ditch was mostly dry, other than some puddled areas following the various log drops within the bottom of the channel. For the current project, the ditch system is expected to remain, with a 150â€™ buffer. It is currently classified as a stream 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section III, Page 3 and will continue to convey along the same upstream flows. Flows have been preliminarily quantified to evaluate the upstream drainage entering and exiting the site. Running the upstream calculations using the SBUH method in HydroCAD, the upstream flows through the stream are as follows: 2 Year Peak Flow: 12.32 cfs 25 Year Peak Flow: 26.63 cfs 100 Year Peak Flow: 33.79 cfs Calculations are included within this section of the report, but for the current proposed project, we have considered this area to be undisturbed, bypassing through the site. In addition to the upstream conveyance passing through the ditch system, the site also proposes to install a block wall on its eastern edge. Drainage behind the wall is designed on the block wall details by Zipper Geo Associates, included in Section VI of this report. These drains will be conveyed to the ditch system along the south side of the property, which drain into the drainage channel. The area of development on the site is generally the portion of the property which flows westerly toward 67th Ave NE. The infiltration trenches on site are being designed to infiltrate 100% of contributing runoff, with the street improvements and small portions of the siteâ€™s lower, west areas bypassing directly into the storm system, at a level meeting flow control and LID standards. Task 4 â€“ Describe the drainage system, and its existing and predicted problems The drainage system is described in Task 2. In design, CG Engineering had stated that the main upstream flows going into the site would remain undisturbed, primarily referring to the ditch and wetland system on the north side of the site, and also the ditch/drainage channel system on the south side of the site. Through the construction of the site however, groundwater has been present throughout excavations, higher than anticipated through design (See Geotechnical Report dated May 17, 2019). This is particularly concerning for the infiltration trenches, which require appropriate separations to function properly. Without the separation the infiltration trenches will not manage the stormwater as required by City of Arlington and Department of Ecology standards. The expectation is that there were significant portions of existing surface water and existing groundwater being â€œcut offâ€ by the swale running through the middle of the site. Without this swale taking water away, it is being found in the various excavations. A cutoff drain has been installed in the field in construction to capture the same groundwater flows. The bottom of the drain has been installed at 137.5, approximately a foot below the elevation of the now- removed ditch. Figure III-2 depicts the approximate areas broken down by the breaks in the pre- construction topography, to depict the cut off drain and how it is collecting groundwater flows in approximately the same are that was connecting to the ditch. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section III, Page 4 This cutoff drain will not capture the surface flows as the existing ditch did. Stormwater will instead connect into the developed projectâ€™s storm system. Site runoff is designed to be mitigated in ten infiltration trenches spaced throughout the site, designed for 100% infiltration. The western most areas of the site are too low to be infiltrated and are being bypassed in the flow calculations. See Section IV and Appendix A for further description and calculations. Ground water in north area will continue to feed the wetland Ground water picked up in preconstruction ditch will be picked up by new cut-off drain. Groundwater to stream will continue to be conveyed to stream. Figure III-2 Cutoff Drain Replicating Preconstruction Ditch 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section III, Page 5 Figure III-3 Upstream flows entering site from SR 531 roadside ditch Figure III-4 On-site ditch (formally Edgecomb Creek route) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section III, Page 6 Figure III-5 Looking north on 67th. Trees on left side of picture border off site pond/bioretention Figure III-6 Edgecomb Creek now flow on south side of SR 531 without crossing. Shown here crossing under 67th, south of intersection. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 7 Section IV â€“ Permanent Stormwater Control Plan Section IV Summary On-Site Stormwater Management Runoff Treatment Flow Control Source Control The developed site is broken into two sub-basins. The first sub-basin (Developed Basin 1) is a bypass. The majority of the site is in the second sub-basin (Developed Basin 2), which is routed to a series of several infiltration beds spaced throughout the project. Figure IV-1 depicts the separation of the basins on site. The site meets the Low Impact Development (LID) Performance standard and the Flow Control Standard by 100% infiltrating the majority of developed runoff, and bypassing areas on the west side of the site where the elevation is too low to infiltrate due to the groundwater table. Water quality is generally addressed by a treatment layer under the infiltration beds. The driveways on the west side of the site are treated with modified catch basins designed for enhanced treatment. The predeveloped (forested) and developed land cover used in the WWHM model is as follows (excluding wetland area and the stream area, as well as their buffers). See Appendix A for more detail within the WHHM report. The proposed lot coverage is as follows: Predeveloped (Basin 1 and 2): Pervious Areas Forested, Flat, C: 183,900 sf (4.222 ac) Forested, Moderate, C: 34,088 sf (0.783 ac) Forested, Steep, C: 57,684 sf (1.324 ac) Total: 275,673 sf (6.329 ac) Developed Project Site- Bypass (Developed Basin 1) Pervious Area Landscaping, Flat, C: 13,927 sf (0.320 ac) Total: 13,927 sf (0.320 ac) Impervious Areas Parking, Flat: 5,015 sf (0.115 ac) Sidewalk, Flat: 14,183 sf (0.326 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 8 Total: 19,198 sf (0.441 ac) Total Bypass Area: 33,125 sf (0.761 ac) Developed Project Site- To Infiltration Trench (Developed Basin 2) Pervious Area Landscaping, Flat, C: 68,182 sf (1.565 ac) Total: 68,182 sf (1.565 ac) Impervious Areas Parking, Flat: 70,650 sf (1.622 ac) Roof, Flat: 63,708 sf (1.463 ac) Sidewalk, Flat: 40,008 sf (0.918 ac) Total: 174,366 sf (4.003 ac) Total Area to Infiltration Trench: 242,548 sf (5.568 ac) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 9 Basin 2a- excludes building N Trenches 106-108 Basin 2b - includes Basin 2c- building N Trenches 101-105 Trenches 109-110 Building N drains Basin 1- Bypass to Basin 2b Figure IV-1 Site Infiltration Basins, along with bypass basin. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 10 Infiltration was only found to be feasible by raising the site above the groundwater and using shallow trenches. Most hard surfaces (all in Developed Sub-basin 2) will be routed to infiltration trenches on- site. Because the site was raised, an appropriate fill material for underneath the proposed infiltration beds was selected. The infiltration rate used for design was 0.94 in/hr. per the recommendations in the geotechnical report. This rate was field verified during the construction as noted in the Supplemental Infiltration Report by Geotest dated March 6, 2020 (included in Section VI). The design rate is conservative based on the field testing performed and was determined to still be adequate. WWHM2012 was used to determine the total amount of gravel infiltration trench required to infiltrate 100% of the runoff in Developed Sub-Basin 2. The total trench area outputted in the WWHM report of 37,000 sf was divided into 10 trenches as shown on the construction plans. The trenches depicted on the plans have a total surface area of 37,140 sf. Catch basins, area drains, roof drains and the pool drain all connect to the infiltration trenches for on-site stormwater management, flow control, and the majority of the water quality standard. On-Site Stormwater Management The project must meet Minimum Requirement #5. Per Table 2.5.1 from the SWMMWW, new development projects on any parcel inside the Urban Growth Area that trigger Minimum Requirements #1 through #9 must either: 1. Use On-Site Stormwater Management BMPs from List #2 for all surfaces within each type of surface in List #2; or 2. Demonstrate compliance with the LID Performance Standard and BMP T5.13. The project proposes to meet the LID Performance Standard and BMP T5.13. The modeling results for the site showing the bypassed area and infiltration area combining to meet this standard are provided and begin on A-2 in Appendix A. Flow Control The infiltration trenches were sized in WWHM to infiltrate 100% of Sub-Basin 2. When comparing the two Developed Sub-basins to the Predeveloped the Flow Control Duration Standard for Minimum Requirement #7 is met. Please see the WWHM report in Appendix A (A-2) for compliance shown incorporating the bypassed basin. Beginning on A-12 is a more specific model of basin two, breaking the trenches into sections to verify 100% infiltration. In designing the trenches an important concern was to raise them up enough to avoid issues with the groundwater. Mounding analyses are provided in the â€œStormwater Infiltration Potentialâ€ section of the 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 11 Geotechnical Report dated May 17, 2019 by Geotest. The groundwater mounding analysis is described in detail on page 23. It is important to note that the water level being treated as the layer of concern in the original design is called out as perched water. With the installation of a cut off drain we are anticipating that this perched water will be removed from the site, at least down to the design levels, rather than the levels being seen in the field during the construction. This issue is documented in Task 4, Section III of this report. The Supplemental Infiltration Report dated March 6, 2020 indicates that the regional groundwater table is at 126.0, more than 10 feet below the bottom of storage. Runoff Treatment Runoff treatment is required for pollution-generating hard surfaces (PGHS). Per Chapter 2.1 of Volume V of the SWMMWW, enhanced treatment is required since the project is a multi-family residential project that discharges directly to fresh waters or conveyance systems tributary to fresh waters designed for aquatic life use. According to the geotechnical report attached in Section VI the surface soil is suitable for on-site pollutant treatment. This soil will not be used in design however, as the perched groundwater could be present. The fill selected for areas underlying treatment areas has the appropriate cation exchange capacity to treat the stormwater. Oil water separator fittings per City details are included in upstream catch basins collecting pollution generating impervious surfaces to provide pretreatment prior to discharge into the trenches. 37,000 sf of infiltration surface area is provided via 10 large infiltration beds on the site. The mitigated water quality design volume (6-Year, 24-hour rain event) for Basin 2 was calculated to be 0.5288 acre-ft. With an infiltration rate of 0.94 inches per hour the volume can be infiltrated within 48 hours. 0.5288 ac-ft = 23,034 cubic feet (water quality design volume) 37,000 sf * 0.94 in/hr. * 1 ft/12 in * 48 hours = 139,120 cubic feet (infiltration capacity in 48 hours) The drawdown check works with a safety factor of approximately 6. The water quality design volume calculation is included in Appendix A, on page A-25. PGHS in the bypass areas only consists of the two driveways off of 67th. As this area does not flow towards the infiltration trenches providing water quality treatment for the site Modular Wetland System Catch Basins are provided to provide Enhanced Treatment to these small areas. The treatment facilities were sized to treat the water quality design flow rate using WWHM. The design flow rate is defined as â€œthe flow rate at or below which 91% of the runoff volume, as estimated by an approved continuous runoff model, will be treatedâ€ (SWMMWW). Table IV-1 presents the water quality flows for each catch basin. 4â€™ x 6â€™ vaults were selected for both catch basins as the water quality flows from the WWHM model for each perspective area are closest to without exceeding the treatment flow capacity of this 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 12 BioPod. See Appendix A pages A-26 for the water quality WWHM model, and the output values for the online and offline flows used to size the BioPod for each basin. Catch Basin # Driveway(ac) Sidewalk(ac) Landscape 15-Min Online 15-Min Offline (ac) WQ Flow (cfs) WQ Flow (cfs) North 0.049 0.023 0.017 0.0136 0.0077 Driveway South 0.047 0.023 0.058 0.0129 0.072 Driveway Table IV-1. Water Quality flow summary from WWHM report. Source Control The pool is required to go into the stormwater system and must meet the requirements of S433: BMPs for Pools, Spas, Hot Tubs and Fountains in the SWMMWW. Many of the requirements in this Source Control standard are regarding standard maintenance of the pool such as cleaning, monitoring chemical & pH levels, etc. The civil engineering design requirements are as follows: Discharge to the ground must comply with Ecologyâ€™s Ground Water Standards, Chapter 173-200 WAC o The project routes runoff from impervious surfaces, including the pool to infiltration trenches, so this requirement applies. This section of the WAC allows for 250 ppm (parts per million) of chlorides, while the proposed pool will only be dosed at 2 ppm, well below the maximum. Pollutant Control o It is not typically recommended that pools be drained, but were this to be needed, the City of Arlington does not allow connections into the sanitary sewer. It is expected that if the pool is drained, it will not be during rain events, and that the water can be conveyed to the on-site stormwater system, where it will infiltrate within the requirements of Chapter 173-200 WAC mentioned above. The infiltration system stubs to the infiltration system, which has significantly more volume than the pool. It will infiltrate prior to discharge to the storm system. Discharges to Storm System o It is not expected that pool will get past the onsite stormwater management facilities and into the City storm drains. The requirement is 0.1 ppm, but it is our expectation that it will all be infiltrated on site per the discussions in the previous two bullet points. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 October 21, 2019 Drainage Report Section IV, Page 13 Permanent Links to Storm System o The pool is not supposed to be permanently connected to storm. The pool facilities will not be, other than trench drains spaced 5 feet off their perimeters. These will capture mostly rain, but also splashes, pool water dripping off of people, etc. If the entire pool needs to be drained to the storm, it should be done with a hose or sump pump. For the more typical civil engineering calculations, such as flow control, the amenity area including the pool, hot tub and splash pad have simply been modeled as impervious surface. Many other items will be noted for the pool permit, including typical operations, information about the chemical storage, sludge disposal, etc., but those are not with the permit requirements for the site development. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 1 Section V â€“ Construction Stormwater Pollution Prevention Section V Summary Narrative Calculations Erosion control details are provided consistent with the 2014 DOE Manual. Erosion control plan sheets are provided in full size as a part of the civil drawing set. A Construction Stormwater General Permit (CSGP) is required through the Department of Ecology because land disturbing activities total over one acre. This will be performed roughly on the same timeline as full engineering submittals to the City of Arlington. A summary of the elements is provided below. Element 1: Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land-disturbing activities begin. Clearing limits will be to the extents of necessary land disturbance. The BMPs relevant to marking the clearing limits that will be applied for this project include: High Visibility Plastic or Metal Fence (BMP C103) Element 2: Establish Construction Access Construction access or activities occurring on unpaved areas shall be minimized, yet where necessary, access points shall be stabilized to minimize the tracking of sediment onto public roads. Stabilized construction entrances will be added on the west and east south of the site at the locations of the proposed entrances to the apartment complex. This will help to prevent sediment tracking into the right of way. Stabilized Construction Entrance (BMP C105) Element 3: Control Flow Rates Stormwater will be directed to a temporary sediment pond at the northwest corner of the site, and flow rates will be controlled per the BMPs listed below. The construction of the temporary sediment pond must be done as one of the first steps in grading. Stormwater should not be directed to infiltration facilities until the site has been stabilized. Protect Low Impact Development BMPs from compaction and sedimentation per Element 13. Temporary Sediment Pond (BMP C241) Check Dams (C207) Silt Fence (BMP C233) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 2 Element 4: Install Sediment Controls Stormwater must be filtered prior to being discharged to an infiltration system or leaving the construction site. A silt fence will be installed around the entire perimeter of the site. A temporary sediment pond will be installed at the northwest corner of the site where some sediment will be able to settle out prior to discharge to the public storm system. If sediment controls are ineffective and turbid water is observed discharging from the site, additional energy dissipation BMPs and sediment control BMPs should be installed such as wattles. It may also be necessary to stabilize soils per Element 5 that are not being worked on. The specific BMPs to be used for controlling sediment on this project include: Silt Fence (BMP C233) Temporary Sediment Pond (BMP C241) Wattles (BMP C235) Element 5: Stabilize Soils Exposed and unworked soils shall be stabilized with the application of effective BMPs to prevent erosion throughout the life of the project. The specific BMPs for soil stabilization that shall be used on this project include: Temporary and Permanent Seeding (BMP C120) Mulching (BMP C121) Nets and Blankets (BMP C122) Plastic Covering (BMP C123) Sodding (BMP C124) Topsoiling/Composting (BMP C125) Surface Roughening (BMP C130) Dust Control (BMP C140) Element 6: Protect Slopes Exposed slopes shall be stabilized with BMPs found in Element 5. Element 7: Protect Drain Inlets Drain inlets near the site and those made operable on-site will be protected from sedimentation. Stormwater shall not enter the conveyance system without first being filtered or treated to remove sediment. Inlet protection devices shall be cleaned or removed and replaced when sediment has filled one-third of the available storage (or as specified by the manufacturer). The specific BMPs to be used for protecting drain inlets are: Storm Drain Inlet Protection (BMP C220) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 3 Element 8: Stabilize Channels and Outlets All temporary on-site conveyance channels shall be designed, constructed, and stabilized to prevent erosion during construction. The specific BMPs to be used for are: Channel Lining (BMP C202) Check Dams (BMP C207) Outlet Protection (BMP C209) Element 9: Control Pollutants Design, install, implement and maintain effective pollution prevention measures to minimize the discharge of pollutants. The suggested BMPs are: Concrete Handling (BMP C151) Saw Cutting and Surfacing Pollution Prevention (BMP C152) Material Delivery, Storage and Containment (BMP C153) Element 10: Control Dewatering De-watering is not anticipated. Element 11: Maintain BMPs All temporary and permanent erosion and sediment control BMPs shall be maintained and repaired as needed to ensure continued performance of their intended function. Element 12: Manage the Project â€¢ Phase development projects to the maximum degree practicable and consider seasonal work limits. â€¢ Inspection and monitoring â€“ Inspect, maintain, and repair all BMPs as needed to assure continued performance of their intended function. Conduct site inspections and monitoring in accordance with the Construction Stormwater General Permit or local plan approval authority. â€¢ Maintain an Updated Construction SWPPP - This SWPPP shall be retained on-site or within reasonable access to the site. - The SWPPP shall be modified whenever there is a change in the design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the state. - The SWPPP shall be modified if, during inspections or investigations conducted by the owner/operator, or the applicable local or state regulatory authority, it is determined that the SWPPP is ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. The SWPPP shall be modified as necessary to include additional or modified BMPs designed to correct problems identified. Revisions to the SWPPP shall be completed within seven (7) days following the inspection. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 4 Element 13: Protect Low Impact Development BMPs Gravel infiltration trenches are proposed throughout the site. All heavy equipment should be kept off infiltration facilities that have been excavated to final grade to retain the infiltration rate of the soil. The proposed trenches shall be protected from compaction during construction with orange protective fencing. Calculations Figure V-1 Sediment Pond Sizing 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 5 Construction Stormwater General Permit Stormwater Pollution Prevention Plan (SWPPP) for Centennial Park Prepared for: The Washington State Department of Ecology Northwest Regional Office Permittee / Owner Developer Operator / Contractor Williams Investments Williams Investments Exxel Pacific 67th Ave and 172nd Street NE, Arlington, WA 98223 Certified Erosion and Sediment Control Lead (CESCL) Name Organization Contact Phone Number Joshua Taylor Taylor Excavating 360.629.3078 SWPPP Prepared By Name Organization Contact Phone Number Darina Litushko CG Engineering 425.778.8500 SWPPP Preparation Date July 2019 Project Construction Dates Activity / Phase Start Date End Date Construction August 2019 December 2020 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 6 Table of Contents 1 Project Information .............................................................................................................. 9 1.1 Existing Conditions ........................................................................................................................ 9 1.2 Proposed Construction Activities ................................................................................................ 10 2 Construction Stormwater Best Management Practices (BMPs) ........................................ 11 2.1 The 13 Elements .......................................................................................................................... 11 2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits .................................................... 11 2.1.2 Element 2: Establish Construction Access .......................................................................... 12 2.1.3 Element 3: Control Flow Rates ........................................................................................... 13 2.1.4 Element 4: Install Sediment Controls ................................................................................. 14 2.1.5 Element 5: Stabilize Soils .................................................................................................... 15 2.1.6 Element 6: Protect Slopes .................................................................................................. 16 2.1.7 Element 7: Protect Drain Inlets .......................................................................................... 17 2.1.8 Element 8: Stabilize Channels and Outlets ......................................................................... 18 2.1.9 Element 9: Control Pollutants ............................................................................................ 19 2.1.10 Element 10: Control Dewatering ........................................................................................ 22 2.1.11 Element 11: Maintain BMPs ............................................................................................... 23 2.1.12 Element 12: Manage the Project ........................................................................................ 24 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs ............................................... 27 3 Pollution Prevention Team ................................................................................................. 28 4 Monitoring and Sampling Requirements ........................................................................... 29 4.1 Site Inspection ............................................................................................................................. 29 4.2 Stormwater Quality Sampling ..................................................................................................... 29 4.2.1 Turbidity Sampling .............................................................................................................. 29 4.2.2 pH Sampling ........................................................................................................................ 31 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies ....................... 32 5.1 303(d) Listed Waterbodies .......................................................................................................... 32 5.2 TMDL Waterbodies ..................................................................................................................... 32 6 Reporting and Record Keeping ........................................................................................... 33 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 7 6.1 Record Keeping ........................................................................................................................... 33 6.1.1 Site Log Book ...................................................................................................................... 33 6.1.2 Records Retention .............................................................................................................. 33 6.1.3 Updating the SWPPP .......................................................................................................... 33 6.2 Reporting..................................................................................................................................... 34 6.2.1 Discharge Monitoring Reports ........................................................................................... 34 6.2.2 Notification of Noncompliance .......................................................................................... 34 List of Tables Table 1 â€“ Summary of Site Pollutant Constituents ....................................................................................... 9 Table 2 â€“ Pollutants ..................................................................................................................................... 19 Table 3 â€“ pH-Modifying Sources ................................................................................................................. 19 Table 4 â€“ Dewatering BMPs ........................................................................................................................ 22 Table 5 â€“ Management ............................................................................................................................... 24 Table 6 â€“ BMP Implementation Schedule ................................................................................................... 25 Table 7 â€“ Team Information ........................................................................................................................ 28 Table 8 â€“ Turbidity Sampling Method ......................................................................................................... 29 Table 9 â€“ pH Sampling Method ................................................................................................................... 31 List of Appendices Appendix/Glossary A. Site Map B. BMP Detail C. Correspondence D. Site Inspection Form E. Construction Stormwater General Permit (CSWGP) F. 303(d) List Waterbodies / TMDL Waterbodies Information G. Contaminated Site Information H. Engineering Calculations 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 8 List of Acronyms and Abbreviations Acronym / Abbreviation Explanation 303(d) Section of the Clean Water Act pertaining to Impaired Waterbodies BFO Bellingham Field Office of the Department of Ecology BMP(s) Best Management Practice(s) CESCL Certified Erosion and Sediment Control Lead CO2 Carbon Dioxide CRO Central Regional Office of the Department of Ecology CSWGP Construction Stormwater General Permit CWA Clean Water Act DMR Discharge Monitoring Report DO Dissolved Oxygen Ecology Washington State Department of Ecology EPA United States Environmental Protection Agency ERO Eastern Regional Office of the Department of Ecology ERTS Environmental Report Tracking System ESC Erosion and Sediment Control GULD General Use Level Designation NPDES National Pollutant Discharge Elimination System NTU Nephelometric Turbidity Units NWRO Northwest Regional Office of the Department of Ecology pH Power of Hydrogen RCW Revised Code of Washington SPCC Spill Prevention, Control, and Countermeasure su Standard Units SWMMEW Stormwater Management Manual for Eastern Washington SWMMWW Stormwater Management Manual for Western Washington SWPPP Stormwater Pollution Prevention Plan TESC Temporary Erosion and Sediment Control SWRO Southwest Regional Office of the Department of Ecology TMDL Total Maximum Daily Load VFO Vancouver Field Office of the Department of Ecology WAC Washington Administrative Code WSDOT Washington Department of Transportation WWHM Western Washington Hydrology Model 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 9 1 Project Information Project/Site Name: Centennial Park Street/Location: 18506 Smokey Point Blvd. City: Arlington State: WA Zip code: 98223 Subdivision: N/A Receiving waterbody: Creek 1.1 Existing Conditions Total acreage (including support activities such as off-site equipment staging yards, material storage areas, borrow areas). Total acreage: 8.81 ac Disturbed acreage: 6.36 ac Existing structures: 0 ac Landscape 0 ac Drainage patterns: The site generally slopes downward from the E to the W. Grades are moderate to steep on the east side of the property and mostly flat otherwise. Existing Bushes, shrubs, grass, wetland, trees Vegetation: Critical Areas (wetlands, streams, high Slopes on east property line, Relict erosion risk, steep or difficult to stabilize Stream Channel, Category IV Wetland slopes): List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL) for the receiving waterbody: Edgecomb Creek is not listed as having impairments on the EPA website. Table 1 includes a list of suspected and/or known contaminants associated with the construction activity. No known or suspected contaminants are associated with the site. Table 1 â€“ Summary of Site Pollutant Constituents Constituent Location Depth Concentration (Pollutant) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 10 1.2 Proposed Construction Activities Description of site development (example: subdivision): Multi-family residential. The project will add 15 buildings. These include one mixed use building, two common buildings, and 12 apartment buildings. Description of construction activities (example: site preparation, demolition, excavation): Clearing and grubbing of existing forested and brushed areas; excavating, filling, and grading; utility installation, parking lot surfacing, building construction and frontage improvements. Description of site drainage including flow from and onto adjacent properties. Must be consistent with Site Map in Appendix A: The site generally slopes downward from the east to the west and drainage in the developed condition is expected to flow in the same direction. Description of final stabilization (example: extent of revegetation, paving, landscaping): Buildings, parking lots and driveways will cover about 50% of the site, with approximately 20% of the site being landscaping and the remaining 30% being encombered by critical areas (Category IV wetland and stream). Contaminated Site Information: Proposed activities regarding contaminated soils or groundwater (example: on-site treatment system, authorized sanitary sewer discharge): N/A 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 11 2 Construction Stormwater Best Management Practices (BMPs) The SWPPP is a living document reflecting current conditions and changes throughout the life of the project. These changes may be informal (i.e., hand-written notes and deletions). Update the SWPPP when the CESCL has noted a deficiency in BMPs or deviation from original design. 2.1 The 13 Elements 2.1.1 Element 1: Preserve Vegetation / Mark Clearing Limits To protect adjacent properties and to reduce the area of soil exposed to construction, the limits of construction will be clearly marked before land-disturbing activities begin. Trees that are to be preserved, as well as all sensitive areas and their buffers, shall be clearly delineated in the field. In general, natural vegetation and native topsoil shall be retained in an undisturbed state to the maximum extent possible. A protective barrier shall be placed around the protected trees prior to land preparation or construction activities and shall remain in place until all construction activity is terminated. No equipment, chemicals, soil deposits or construction materials shall be placed within the protective barriers. Any landscaping activities subsequent to the removal of the barriers shall be accomplished with light machinery or hand labor. High Visibility Fence will be placed around the entire site running along the property lines. List and describe BMPs: â€¢ BMP C101: Preserving Natural Vegetation â€¢ BMP C102: Buffer Zones â€¢ BMP C103: High Visibility Plastic or Metal Fence â€¢ BMP C233: Silt Fence Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 12 2.1.2 Element 2: Establish Construction Access Limit vehicle access to one route, if possible. Construction access or activities occurring on unpaved areas shall be minimized, yet where necessary, access points shall be stabilized to minimize the tracking of sediment onto public roads. Street sweeping, street cleaning, or wheel wash/tire baths may be necessary if the stabilized construction access is not effective. If sediment is tracked off site, clean the affected roadway thoroughly at the end of each day, or more necessary as needed. All wheel wash wastewater shall be controlled on-site and CANNOT be discharged into waters of the State. Stabilized construction entrances will be added along the west edges of the site at the locations of the proposed entrances to the complex. This will help to prevent sediment tracking into the right of way. List and describe BMPs: â€¢ BMP C105: Stabilized Construction Entrance/Exit â€¢ BMP C107: Construction Road/Parking Area Stabilization Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 13 2.1.3 Element 3: Control Flow Rates The project site has a gentle slope from east to west for most of the site (<2%). There is a moderate slope near the west side of the site (12%). Stormwater will be directed to a temporary detention pond at the northwest corner of the site, and flow rates will be controlled per the BMPs listed below. The construction of the temporary sediment pond must be done as one of the first steps in grading. Infiltration facilities will be constructed for permanent stormwater control. Stormwater should not be directed to these facilities until the site has been stabilized. Protect Low Impact Development BMPs from compaction and sedimentation per Element 13. Flow rates around the rest of the site will be controlled by the silt fence that will be placed around the entire site. Will you construct stormwater retention and/or detention facilities? Yes No Will you use permanent infiltration ponds or other low impact development (example: rain gardens, bio-retention, porous pavement) to control flow during construction? Yes No List and describe BMPs: â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection â€¢ BMP C241: Temporary Sediment Pond Installation Schedules: Install BMPs prior to grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 14 2.1.4 Element 4: Install Sediment Controls Stormwater must be filtered prior to being discharged to an infiltration system or leaving the construction site. Sediment control BMPs will be installed as one of the first steps of grading. These BMPs must be functional before other land-disturbing activities, especially grading and filling, take place. A silt fence will be installed around the perimeter of the developed site areas. A temporary sediment pond will be installed at the northwest corner of the site where some sediment will be able to settle out prior to discharge to the public storm system. If sediment controls are ineffective and turbid water is observed discharging from the site, additional energy dissipation BMPs and sediment control BMPs should be installed such as wattles. It may also be necessary to stabilize soils per Element 5 that are not being worked on. List and describe BMPs: â€¢ BMP C233: Silt Fence â€¢ BMP C235: Wattles â€¢ BMP C241: Temporary Sediment Pond Installation Schedules: Install BMPs prior to clearing and grading. Inspection and Maintenance plan: Repair sediment controls as needed. Remove sediment from pond as needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 15 2.1.5 Element 5: Stabilize Soils Stabilize exposed and unworked soils by the BMPs listed below to prevent erosion. Protect stockpiles with plastic covering or other approved sediment trapping measures. Stabilize exposed soils with Temporary and Permanent Seeding, Mulching, Sodding, Top soiling/Compost, or Surface Roughening. Minimize soil compaction by applying gravel base early on areas to be paved. The ESC Supervisor shall be familiar with BMPs for soil stabilization and dust control and implement these BMPs where needed on the proposed site. West of the Cascade Mountains Crest Number of Days Soils Can Season Dates be Left Exposed During the Dry Season May 1 â€“ September 30 7 days During the Wet Season October 1 â€“ April 30 2 days Soils must be stabilized at the end of the shift before a holiday or weekend if needed based on the weather forecast. Anticipated project dates: Start date: August 2019 End date: December 2020 Will you construct during the wet season? Yes No List and describe BMPs: â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C125: Top soiling/Composting â€¢ BMP C130: Surface Roughening â€¢ BMP C131: Gradient Terraces â€¢ BMP C140: Dust Control Installation Schedules: As needed as soil is exposed. Inspection and Maintenance plan: End of the shift before a holiday or weekend and prior to forecasted rain events. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 16 2.1.6 Element 6: Protect Slopes All cut and fill slopes will be designed, constructed, and protected in a manner that minimizes erosion. The interceptor swale and check dams will be located along the west side of the site as needed. Will steep slopes be present at the site during construction? Yes No (temporary excavations may create brief temporary slopes during wall construction) List and describe BMPs: â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C130: Surface Roughening â€¢ BMP C200: Interceptor Dike and Swale â€¢ BMP C201: Grass-Lined Channels â€¢ BMP C207: Check Dams Installation Schedules: Install BMPs prior to grading and as needed to minimize erosion. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 17 2.1.7 Element 7: Protect Drain Inlets All storm drain inlets and culverts made operable during construction shall be protected to prevent unfiltered or untreated water from entering the drainage conveyance system. However, the first priority is to keep all access roads clean of sediment and keep street wash water separate from entering storm drains until treatment can be provided. Storm Drain Inlet Protection will be implemented for all drainage inlets and culverts that could potentially be impacted by sediment-laden runoff on and near the project site. Inlet protection should be provided as shown on the C2.1 Plan. Inlet protection devices will be cleaned (or removed and replaced), when sediment has filled the device by one third (1/3) or as specified by the manufacturer. List and describe BMPs: â€¢ BMP C220: Storm Drain Inlet Protection Installation Schedules: Before land disturbance for existing catch basins and as new catch basins are made operable. Inspection and Maintenance plan: Inlets will be inspected weekly at a minimum and daily during storm events. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 18 2.1.8 Element 8: Stabilize Channels and Outlets Where site runoff is to be conveyed in channels or discharged to a stream or some other natural drainage point, efforts will be taken to prevent downstream erosion. The project site is located west of the Cascade Mountain Crest. As such, all temporary on-site conveyance channels shall be designed, constructed, and stabilized to prevent erosion from the expected peak 10 minute velocity of flow from a Type 1A, 10-year, 24-hour recurrence interval storm for the developed condition. Alternatively, the 10-year, 1-hour peak flow rate indicated by an approved continuous runoff simulation model, increased by a factor of 1.6, shall be used. Provide stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes, and downstream reaches, will be installed at the outlets of all conveyance systems. List and describe BMPs: â€¢ BMP C202: Channel Lining â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection Installation Schedules: Install BMPs prior to grading. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 19 2.1.9 Element 9: Control Pollutants The following pollutants are anticipated to be present on-site: Table 2 â€“ Pollutants Pollutant (List pollutants and source, if applicable) Concrete Concrete process water Concrete slurry Asphalt materials Utility Materials List and describe BMPs: â€¢ BMP C151: Concrete Handling â€¢ BMP C152: Sawcutting and Surfacing Pollution Prevention â€¢ BMP C153: Material Delivery, Storage and Containment Installation Schedules: As needed as pollutant source materials are used on-site. Inspection and Maintenance plan: As needed. Responsible Staff: CESCL. Will maintenance, fueling, and/or repair of heavy equipment and vehicles occur on-site? Yes No Will wheel wash or tire bath system BMPs be used during construction? Yes No Will pH-modifying sources be present on-site? Yes No Table 3 â€“ pH-Modifying Sources None Bulk cement Cement kiln dust Fly ash Other cementitious materials New concrete washing or curing waters Waste streams generated from concrete grinding and sawing Exposed aggregate processes 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 20 Dewatering concrete vaults Concrete pumping and mixer washout waters Recycled concrete Recycled concrete stockpiles Other (i.e., calcium lignosulfate) [please describe: ] Concrete trucks must not be washed out onto the ground, or into storm drains, open ditches, streets, or streams. Excess concrete must not be dumped on-site, except in designated concrete washout areas with appropriate BMPs installed. Will uncontaminated water from water-only based shaft drilling for construction of building, road, and bridge foundations be infiltrated provided the wastewater is managed in a way that prohibits discharge to surface waters? Yes No 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 21 2.1.10 Element 10: Control Dewatering Dewatering is not anticipated to be associated with this construction project. Most excavations are intended to occur in the dry seasons above the groundwater table, although several instances of â€œperchedâ€ groundwater were found in the geotechnical test pits. If necessary, only clean, non-turbid dewatering water (such as well-point groundwater) may be discharged to systems tributary to, or directly into, surface waters of the State, provided the dewatering flow does not cause erosion or flooding of receiving waters. Table 4 â€“ Dewatering BMPs Infiltration Transport off-site in a vehicle (vacuum truck for legal disposal) Ecology-approved on-site chemical treatment or other suitable treatment technologies Sanitary or combined sewer discharge with local sewer district approval (last resort) Use of sedimentation bag with discharge to ditch or swale (small volumes of localized dewatering) List and describe BMPs: N/A. Installation Schedules: N/A. Inspection and Maintenance plan: N/A. Responsible Staff: CESCL. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 22 2.1.11 Element 11: Maintain BMPs All temporary and permanent Erosion and Sediment Control (ESC) BMPs shall be maintained and repaired as needed to ensure continued performance of their intended function. Maintenance and repair shall be conducted in accordance with each particular BMP specification (see Volume II of the SWMMWW or Chapter 7 of the SWMMEW). Visual monitoring of all BMPs installed at the site will be conducted at least once every calendar week and within 24 hours of any stormwater or non-stormwater discharge from the site. If the site becomes inactive and is temporarily stabilized, the inspection frequency may be reduced to once every calendar month. All temporary ESC BMPs shall be removed within 30 days after final site stabilization is achieved or after the temporary BMPs are no longer needed. Trapped sediment shall be stabilized on-site or removed. Disturbed soil resulting from removal of either BMPs or vegetation shall be permanently stabilized. Additionally, protection must be provided for all BMPs installed for the permanent control of stormwater from sediment and compaction. BMPs that are to remain in place following completion of construction shall be examined and restored to full operating condition. If sediment enters these BMPs during construction, the sediment shall be removed, and the facility shall be returned to conditions specified in the construction documents. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 23 2.1.12 Element 12: Manage the Project The project will be managed based on the following principles: â€¢ Projects will be phased to the maximum extent practicable and seasonal work limitations will be taken into account. â€¢ Inspection and monitoring: o Inspection, maintenance and repair of all BMPs will occur as needed to ensure performance of their intended function. o Site inspections and monitoring will be conducted in accordance with Special Condition S4 of the CSWGP. Sampling locations are indicated on the Site Map. Sampling station(s) are located in accordance with applicable requirements of the CSWGP. â€¢ Maintain an updated SWPPP. o The SWPPP will be updated, maintained, and implemented in accordance with Special Conditions S3, S4, and S9 of the CSWGP. As site work progresses the SWPPP will be modified routinely to reflect changing site conditions. The SWPPP will be reviewed monthly to ensure the content is current. Table 5 â€“ Management Design the project to fit the existing topography, soils, and drainage patterns Emphasize erosion control rather than sediment control Minimize the extent and duration of the area exposed Keep runoff velocities low Retain sediment on-site Thoroughly monitor site and maintain all ESC measures Schedule major earthwork during the dry season Other (please describe) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 24 Table 6 â€“ BMP Implementation Schedule In general, it is expected that most early grading will occur in the dry season of 2019 and be picked up again in dry season of 2020. Phase of Construction Wet/Dry Stormwater BMPs Date Project Season Pre-construction Preserving Natural Vegetation 8/19/2019 Dry (BMP C101) Pre-construction High Visibility Fence (BMP C103) 8/21/2019 Dry Pre-construction Silt Fence (BMP C233) 8/21/2019 Dry Land disturbance Stabilized Construction 8/23/2019 Dry Entrance/Exit (BMP C105) Land disturbance Sediment Trap (BMP C240) NA Dry Land disturbance Temporary Sediment Pond (BMP 8/26/2019 Dry C241) Land disturbance Temporary and Permanent Throughout Dry Seeding (BMP C120) project as needed Land disturbance Mulching (BMP C121) Throughout Dry project as needed Land disturbance Nets and Blankets (BMP C122) NA Dry Land disturbance Plastic Covering (BMP C123) 10/15/2019 Dry Land disturbance Sodding (BMP C124) Throughout Dry project as needed Land disturbance Topsoiling/Composting (BMP Throughout Dry C125) project as needed Land disturbance Surface Roughening (BMP C130) Throughout Dry project as needed Land disturbance Dust Control (BMP C140) Throughout Dry project as needed Land disturbance Interceptor Dike and Swale (BMP 8/23/2019 Dry C200) Land disturbance Channel Lining (BMP C202) 8/23/2019 Dry Land disturbance Check Dams (BMP C207) 8/23/2019 Dry 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 25 Land disturbance Outlet protection (BMP C209) 8/26/2019 Dry Land disturbance Storm Drain Inlet Protection 8/19/19 Dry (BMP C220) Construction Wattles (BMP C235) NA Dry Construction Concrete handling (BMP C151) NA Dry Construction Sawcutting and Surfacing 4/30/2020 Dry Pollution Prevention (BMP C152) Construction Material Delivery, Storage and 8/26/19 Dry Containment (BMP C153) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 26 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs Gravel Infiltration Trenches (SWMMWW Section 3.3.11) will be the primary means of stormwater mitigation for the roofs and other hard surfaces on this project. The infiltration trenches will need to be protected from compaction during construction. This can be done by placing orange protective fencing around the trenches as they are constructed in order to avoid compaction from vehicle traffic. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 27 3 Pollution Prevention Team Table 7 â€“ Team Information Title Name(s) Phone Number Certified Erosion and Sediment Joshua Taylor 360.629.3078 Control Lead (CESCL) Resident Engineer CG Engineering 425.778.8500 Emergency Ecology Contact Jess Eakens 360.407.6442 Emergency Permittee/ Owner Contact Ryan Kilby 425.750.7926 Non-Emergency Owner Contact Ryan Kilby 425.750.7926 Monitoring Personnel TBD TBD Ecology Regional Office Northwest Regional Office 425.649.7000 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 28 4 Monitoring and Sampling Requirements Monitoring includes visual inspection, sampling for water quality parameters of concern, and documentation of the inspection and sampling findings in a site logbook. A site logbook will be maintained for all on-site construction activities and will include: â€¢ A record of the implementation of the SWPPP and other permit requirements â€¢ Site inspections â€¢ Stormwater sampling data File a blank form under Appendix D. The site logbook must be maintained on-site within reasonable access to the site and be made available upon request to Ecology or the local jurisdiction. Numeric effluent limits may be required for certain discharges to 303(d) listed waterbodies. See CSWGP Special Condition S8 and Section 5 of this template. 4.1 Site Inspection Site inspections will be conducted at least once every calendar week and within 24 hours following any discharge from the site. For sites that are temporarily stabilized and inactive, the required frequency is reduced to once per calendar month. The discharge point(s) are indicated on the Site Map (see Appendix A) and in accordance with the applicable requirements of the CSWGP. 4.2 Stormwater Quality Sampling 4.2.1 Turbidity Sampling Requirements include calibrated turbidity meter or transparency tube to sample site discharges for compliance with the CSWGP. Sampling will be conducted at all discharge points at least once per calendar week. Method for sampling turbidity: Table 8 â€“ Turbidity Sampling Method Turbidity Meter/Turbidimeter (required for disturbances 5 acres or greater in size) Transparency Tube (option for disturbances less than 1 acre and up to 5 acres in size) The benchmark for turbidity value is 25 nephelometric turbidity units (NTU) and a transparency less than 33 centimeters. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 29 If the dischargeâ€™s turbidity is 26 to 249 NTU or the transparency is less than 33 cm but equal to or greater than 6 cm, the following steps will be conducted: 1. Review the SWPPP for compliance with Special Condition S9. Make appropriate revisions within 7 days of the date the discharge exceeded the benchmark. 2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 10 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period. 3. Document BMP implementation and maintenance in the site logbook. If the turbidity exceeds 250 NTU or the transparency is 6 cm or less at any time, the following steps will be conducted: 1. Telephone or submit an electronic report to the applicable Ecology Regionâ€™s Environmental Report Tracking System (ERTS) within 24 hours. â€¢ Central Region (Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, Yakima): (509) 575-2490 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/CRO_nerts_online.html â€¢ Eastern Region (Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, Whitman): (509) 329-3400 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/ERO_nerts_online.html â€¢ Northwest Region (King, Kitsap, Island, San Juan, Skagit, Snohomish, Whatcom): (425) 649-7000 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/NWRO_nerts_online.html â€¢ Southwest Region (Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, Wahkiakum,): (360) 407-6300 or http://www.ecy.wa.gov/programs/spills/forms/nerts_online/SWRO_nerts_online.html 2. Immediately begin the process to fully implement and maintain appropriate source control and/or treatment BMPs as soon as possible. Address the problems within 10 days of the date the discharge exceeded the benchmark. If installation of necessary treatment BMPs is not feasible within 10 days, Ecology may approve additional time when the Permittee requests an extension within the initial 10-day response period 3. Document BMP implementation and maintenance in the site logbook. 4. Continue to sample discharges daily until one of the following is true: â€¢ Turbidity is 25 NTU (or lower). â€¢ Transparency is 33 cm (or greater). â€¢ Compliance with the water quality limit for turbidity is achieved. o 1 - 5 NTU over background turbidity, if background is less than 50 NTU o 1% - 10% over background turbidity, if background is 50 NTU or greater â€¢ The discharge stops or is eliminated. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 30 4.2.2 pH Sampling pH monitoring is required for â€œSignificant concrete workâ€ (i.e., greater than 1000 cubic yards poured concrete over the life of the project). The use of recycled concrete or engineered soils (soil amendments including but not limited to Portland cement-treated base [CTB], cement kiln dust [CKD] or fly ash) also requires pH monitoring. For significant concrete work, pH sampling will start the first day concrete is poured and continue until it is cured, typically three (3) weeks after the last pour. For engineered soils and recycled concrete, pH sampling begins when engineered soils or recycled concrete are first exposed to precipitation and continues until the area is fully stabilized. If the measured pH is 8.5 or greater, the following measures will be taken: 1. Prevent high pH water from entering storm sewer systems or surface water. 2. Adjust or neutralize the high pH water to the range of 6.5 to 8.5 su using appropriate technology such as carbon dioxide (CO2) sparging (liquid or dry ice). 3. Written approval will be obtained from Ecology prior to the use of chemical treatment other than CO2 sparging or dry ice. Method for sampling pH: Table 9 â€“ pH Sampling Method pH meter pH test kit Wide range pH indicator paper 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 31 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies 5.1 303(d) Listed Waterbodies Is the receiving water 303(d) (Category 5) listed for turbidity, fine sediment, phosphorus, or pH? Yes No List the impairment(s): N/A 5.2 TMDL Waterbodies Waste Load Allocation for CSWGP discharges: N/A List and describe BMPs: N/A Discharges to TMDL receiving waterbodies will meet in-stream water quality criteria at the point of discharge. The Construction Stormwater General Permit Proposed New Discharge to an Impaired Water Body form is included in Appendix F. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 32 6 Reporting and Record Keeping 6.1 Record Keeping 6.1.1 Site Logbook A site logbook will be maintained for all on-site construction activities and will include: â€¢ A record of the implementation of the SWPPP and other permit requirements â€¢ Site inspections â€¢ Sample logs 6.1.2 Records Retention Records will be retained during the life of the project and for a minimum of three (3) years following the termination of permit coverage in accordance with Special Condition S5.C of the CSWGP. Permit documentation to be retained on-site: â€¢ CSWGP â€¢ Permit Coverage Letter â€¢ SWPPP â€¢ Site Logbook Permit documentation will be provided within 14 days of receipt of a written request from Ecology. A copy of the SWPPP or access to the SWPPP will be provided to the public when requested in writing in accordance with Special Condition S5.G.2.b of the CSWGP. 6.1.3 Updating the SWPPP The SWPPP will be modified if: â€¢ Found ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. â€¢ There is a change in design, construction, operation, or maintenance at the construction site that has, or could have, a significant effect on the discharge of pollutants to waters of the State. The SWPPP will be modified within seven (7) days if inspection(s) or investigation(s) determine additional or modified BMPs are necessary for compliance. An updated timeline for BMP implementation will be prepared. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 33 6.2 Reporting 6.2.1 Discharge Monitoring Reports Cumulative soil disturbance is one (1) acre or larger; therefore, Discharge Monitoring Reports (DMRs) will be submitted to Ecology monthly. If there was no discharge during a given monitoring period the DMR will be submitted as required, reporting â€œNo Dischargeâ€. The DMR due date is fifteen (15) days following the end of each calendar month. DMRs will be reported online through Ecologyâ€™s WQWebDMR System. 6.2.2 Notification of Noncompliance If any of the terms and conditions of the permit is not met, and the resulting noncompliance may cause a threat to human health or the environment, the following actions will be taken: 1. Ecology will be notified within 24-hours of the failure to comply by calling the applicable Regional office ERTS phone number (Regional office numbers listed below). 2. Immediate action will be taken to prevent the discharge/pollution or otherwise stop or correct the noncompliance. If applicable, sampling and analysis of any noncompliance will be repeated immediately, and the results submitted to Ecology within five (5) days of becoming aware of the violation. 3. A detailed written report describing the noncompliance will be submitted to Ecology within five (5) days, unless requested earlier by Ecology. Anytime turbidity sampling indicates turbidity is 250 NTUs or greater, or water transparency is 6 cm or less, the Ecology Regional office will be notified by phone within 24 hours of analysis as required by Special Condition S5.A of the CSWGP. â€¢ Central Region at (509) 575-2490 for Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, or Yakima County â€¢ Eastern Region at (509) 329-3400 for Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, or Whitman County â€¢ Northwest Region at (425) 649-7000 for Island, King, Kitsap, San Juan, Skagit, Snohomish, or Whatcom County â€¢ Southwest Region at (360) 407-6300 for Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, or Wahkiakum 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 34 Include the following information: 1. Your name and / Phone number 2. Permit number 3. City / County of project 4. Sample results 5. Date / Time of call 6. Date / Time of sample 7. Project name In accordance with Special Condition S4.D.5.b of the CSWGP, the Ecology Regional office will be notified if chemical treatment other than CO2 sparging is planned for adjustment of high pH water. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 35 Appendix/Glossary A. Site Map Figure A-1. Site map. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 36 B. BMP Detail BMP details are shown on the approved TESC plan. Additional/alternative BMPs are listed below and available for download from the Ecology Construction Stormwater website: http://www.ecy.wa.gov/programs/wq/stormwater/construction/index.html Element #1 - Mark Clearing Limits â€¢ BMP C101: Preserving Natural Vegetation â€¢ BMP C102: Buffer Zones â€¢ BMP C103: High Visibility Plastic or Metal Fence â€¢ BMP C233: Silt Fence Element #2 - Establish Construction Access â€¢ BMP C105: Stabilized Construction Entrance/Exit â€¢ BMP C107: Construction Road/Parking Area Stabilization Element #3 - Control Flow Rates â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection â€¢ BMP C241: Temporary Sediment Pond Element #4 - Install Sediment Controls â€¢ BMP C233: Silt Fence â€¢ BMP C235: Wattles â€¢ BMP C241: Temporary Sediment Pond Element #5 - Stabilize Soils â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C125: Topsoiling/Composting â€¢ BMP C130: Surface Roughening â€¢ BMP C131: Gradient Terraces â€¢ BMP C140: Dust Control Element #6 - Protect Slopes â€¢ BMP C120: Temporary and Permanent Seeding â€¢ BMP C121: Mulching â€¢ BMP C123: Plastic Covering â€¢ BMP C124: Sodding â€¢ BMP C130: Surface Roughening â€¢ BMP C200: Interceptor Dike and Swale â€¢ BMP C201: Grass-Lined Channels â€¢ BMP C207: Check Dams Element #7 - Protect Drain Inlets â€¢ BMP C220: Storm Drain Inlet Protection 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 37 Element #8 - Stabilize Channels and Outlets â€¢ BMP C202: Channel Lining â€¢ BMP C207: Check Dams â€¢ BMP C209: Outlet Protection Element #9 â€“ Control Pollutants â€¢ BMP C151: Concrete Handling â€¢ BMP C152: Sawcutting and Surfacing Pollution Prevention â€¢ BMP C153: Material Delivery, Storage and Containment â€¢ See Volume IV â€“ Source Control BMPs Element #10 - Control Dewatering NA Element #11: Maintain BMPs â€¢ BMP C150: Materials On Hand â€¢ BMP C160: Certified Erosion and Sediment Control Lead Element #12: Manage the Project â€¢ BMP C150: Materials On Hand â€¢ BMP C160: Certified Erosion and Sediment Control Lead â€¢ BMP C162: Scheduling Element #13: Protect LID BMPs â€¢ BMP C103: High Visibility Fence 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 38 C. Correspondence 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 39 D. Site Inspection Form Permit # Inspection Time Project Date Name Name of Certified Erosion Sediment Control Lead (CESCL) or qualified inspector if less than one acre Print Name: Approximate rainfall amount since the last inspection (in inches): Approximate rainfall amount in the last 24 hours (in inches): Current Weather Clear Cloudy Mist Rain Wind Fog A. Type of inspection: Weekly Post Storm Event Other B. Phase of Active Construction (check all that apply): Pre-Construction/installation of Clearing/Demo/Grading Infrastructure/storm/roads erosion/sediment controls Concrete pours Vertical Utilities Construction/buildings Offsite improvements Site temporary stabilized Final stabilization C. Questions: 1. Were all areas of construction and discharge points inspected? Yes No 2. Did you observe the presence of suspended sediment, turbidity, discoloration, Yes No or oil sheen 3. Was a water quality sample taken during inspection? (refer to permit Yes No conditions S4 & S5) 4. Was there a turbid discharge 250 NTU or greater, or Transparency 6 cm or Yes No less?* 5. If yes to #4 was it reported to Ecology? Yes No 6. Is pH sampling required? pH range required is 6.5 to 8.5. Yes No 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 40 If answering yes to a discharge, describe the event. Include when, where, and why it happened; what action was taken, and when. *If answering yes to # 4 record NTU/Transparency with continual sampling daily until turbidity is 25 NTU or less/ transparency is 33 cm or greater. Sampling Date: Results: Parameter Method (circle one) Result Other/Note NTU cm pH Turbidity tube, meter, laboratory pH Paper, kit, meter D. Check the observed status of all items. Provide â€œAction Required â€œdetails and dates. Element # Inspection BMPs BMP BMP Action Inspected needs failed required yes no n/a maintena (describe nce in section F) 1 Before beginning land disturbing Clearing activities are all clearing limits, Limits natural resource areas (streams, wetlands, buffers, trees) protected with barriers or similar BMPs? (high visibility recommended) 2 Construction access is stabilized Construction with quarry spalls or equivalent Access BMP to prevent sediment from being tracked onto roads? Sediment tracked onto the roadway was cleaned thoroughly at the end of the day or more frequent as necessary. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 41 3 Are flow control measures Control Flow installed to control stormwater Rates volumes and velocity during construction and do they protect downstream properties and waterways from erosion? If permanent infiltration ponds are used for flow control during construction, are they protected from siltation? 4 All perimeter sediment controls Sediment (e.g. silt fence, wattles, compost Controls socks, berms, etc.) installed, and maintained in accordance with the Stormwater Pollution Prevention Plan (SWPPP). Sediment control BMPs (sediment ponds, traps, filters etc.) have been constructed and functional as the first step of grading. Stormwater runoff from disturbed areas is directed to sediment removal BMP. 5 Have exposed un-worked soils Stabilize Soils been stabilized with effective BMP to prevent erosion and sediment deposition? Are stockpiles stabilized from erosion, protected with sediment trapping measures and located away from drain inlet, waterways, and drainage channels? Have soils been stabilized at the end of the shift, before a holiday or weekend if needed based on the weather forecast? Has stormwater and ground water 6 been diverted away from slopes and Protect Slopes disturbed areas with interceptor dikes, pipes and or swales? 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 42 Is off-site storm water managed separately from stormwater generated on the site? Is excavated material placed on uphill side of trenches consistent with safety and space considerations? Have check dams been placed at regular intervals within constructed channels that are cut down a slope? 7 Storm drain inlets made operable Drain Inlets during construction are protected. Are existing storm drains within the influence of the project protected? 8 Have all on-site conveyance channels Stabilize been designed, constructed and Channel and stabilized to prevent erosion from Outlets expected peak flows? Is stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent stream banks, slopes and downstream conveyance systems? 9 Are waste materials and demolition Control debris handled and disposed of to Pollutants prevent contamination of stormwater? Has cover been provided for all chemicals, liquid products, petroleum products, and other material? Has secondary containment been provided capable of containing 110% of the volume? Were contaminated surfaces cleaned immediately after a spill incident? Were BMPs used to prevent contamination of stormwater by a pH modifying sources? Wheel wash wastewater is handled and disposed of properly. 10 Concrete washout in designated Control areas. No washout or excess concrete Dewatering on the ground. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 43 Dewatering has been done to an approved source and in compliance with the SWPPP. Were there any clean non turbid dewatering discharges? 11 Are all temporary and permanent Maintain BMP erosion and sediment control BMPs maintained to perform as intended? 12 Has the project been phased to the Manage the maximum degree practicable? Project Has regular inspection, monitoring and maintenance been performed as required by the permit? Has the SWPPP been updated, implemented and records maintained? 13 Is all Bioretention and Rain Garden Protect LID Facilities protected from sedimentation with appropriate BMPs? Is the Bioretention and Rain Garden protected against over compaction of construction equipment and foot traffic to retain its infiltration capabilities? Permeable pavements are clean and free of sediment and sediment laden- water runoff. Muddy construction equipment has not been on the base material or pavement. Have soiled permeable pavements been cleaned of sediments and pass infiltration test as required by stormwater manual methodology? Heavy equipment has been kept off existing soils under LID facilities to retain infiltration rate. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 44 E. Check all areas that have been inspected. All in place All disturbed All concrete wash out All material storage BMPs soils area areas All discharge All equipment storage All construction locations areas entrances/exits F. Elements checked â€œAction Requiredâ€ (section D) describe corrective action to be taken. List the element number; be specific on location and work needed. Document, initial, and date when the corrective action has been completed and inspected. Element Description and Location Action Required Completion Initials # Date Attach additional page if needed Sign the following certification: â€œI certify that this report is true, accurate, and complete, to the best of my knowledge and beliefâ€ Inspected by: (Signature) Date: (print) Title/Qualification of Inspector: 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 45 E. Construction Stormwater General Permit (CSWGP) 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 46 F. 303(d) List Waterbodies / TMDL Waterbodies Information 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 47 G. Contaminated Site Information 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section V, Page 48 H. Engineering Calculations 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section VI, Page 1 Section VI â€“ Special Reports and/or Studies Section VI Summary Narrative The following reports are included in this section: 1. Geotechnical Engineering Report by Geotest, dated May 17, 2019. 2. Wetlands Delineation and Fish and Wildlife Habitat Report and Buffer Enhancement Plan by Soundview Consultants dated February 10, 2019. 3. As Built Drawings from Edgecomb Creek Rerouting 4. Supplemental Infiltration Report by Geotest, dated March 6, 2020 5. Cutoff Trench, Rev 1 by Geotest, dated March 17, 2020 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com WETLAND DELINEATION AND FISH AND WILDLIFE HABITAT ASSESSMENT REPORT AND BUFFER ENHANCEMENT PLAN CENTENNIAL PARK JUNE 2019 WETLAND DELINEATION AND FISH AND WILDLIFE HABITAT ASSESSMENT REPORT AND BUFFER ENHANCEMENT PLAN CENTENNIAL PARK JUNE 28, 2019 PROJECT LOCATION 67TH AVE NE & 172ND ST NE/HWY 531 ARLINGTON, WASHINGTON 98030 PREPARED FOR WILLIAMS INVESTMENTS 2517 COLBY AVENUE, EVERETT, WASHINGTON 98201 PREPARED BY SOUNDVIEW CONSULTANTS LLC 2907 HARBORVIEW DRIVE, SUITE D GIG HARBOR, WASHINGTON 98335 (253) 514-8952 Executive Summary Soundview Consultants LLC (SVC) is assisting Williams Investments (Applicant) with a Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan for a proposed multi-family residential and retail commercial development of an 8.81-acre site located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington. The subject property consists of one parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). SVC investigated the subject property for the presence of potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species in the fall of 2018 and winter of 2019. Using current methodology, the site assessment identified one potentially-regulated wetland (Wetland A) and one relict stream channel (Edgecomb Creek) on the subject property and one newly relocated stream (Edgecomb Creek) offsite to the south within 225 feet of the site. Wetland A is considered a Category IV wetland with a standard 40-foot buffer based on the low habitat score per Arlington Municipal Code (AMC) 20.93.830(b). Edgecomb Creek was previously located onsite but was successfully relocated offsite as part of a Washington State Department of Transportation (WSDOT) restoration project. The relict stream channel remains onsite, and the Applicant is seeking to declassify it from being considered a stream as this relict channel no longer meets the stream definition criteria as described in the Washington Administrative Code (WAC) 222-16-030. A technical memorandum regarding this stream declassification request and a water type modification form has been submitted to the Washington Department of Natural Resources (DNR) under separate cover (SVC, 2019). The relict channel was previously utilized by salmonid species and therefore is considered Fish and Wildlife Habitat Conservation Area (FHWCA) under AMC 20.93.400. SVC is currently completing a bed gradient study to determine if the channel continues to qualify as a FWHCA and should be deregulated. However, until it is formally declassified and deregulated, it is subject to a 100-foot native growth protection easement and additional 50-foot management zone per AMC 20.93.440(a). The newly relocated Edgecomb Creek offsite to the south is considered a Type F-ESA water with an associated 150-foot buffer per AMC Table 20.93-3. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species were identified within 225 feet of the subject property. The Applicant proposes a phased mixed land use development consisting of multi-family residential units and commercial retail space with associated infrastructure to provide additional housing and commercial space within the City of Arlington. This report addresses Phase 1 of the development, which proposes approximately 152 residential units and approximately 8,000 square feet of retail area with associated parking, a recreational park, garden and open space. Both the park and open space meet the City of Arlingtonâ€™s requirements, and these areas will be vegetated with appropriate plant species. Phase 2 proposes an additional 36 residential units and associated parking spaces and is contingent upon the declassification and deregulation of the relict Edgecomb Creek channel present on the southern portion of the site. The project was carefully designed in order to avoid and minimize impacts to critical areas to the greatest extent feasible, and no direct or indirect wetland impacts are proposed. However, Phase 2 of the project will require the unavoidable fill of the relict stream channel. 1778.0001 Centennial Park i Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Size Category/ Regulated Under Regulated Under Regulated Under Wetland Name Onsite Type1 AMC Chapter 20.93 RCW 90.48 Clean Water Act ~ 21,823 Wetland A IV Yes Yes Yes SF Relict Edgecomb N/A N/A Yes2 Yes2 Potentially Creek Channel Relocated Edgecomb Type Offsite Yes Yes Yes Creek F/ESA 1. Washington State Department of Ecology (WSDOE) wetland rating system (Hruby, 2014) per AMC 20.93.730 and AMC 20.93.800. 2. The relict channel is regulated by the local and state jurisdiction until appropriate documentation has been submitted to support its deregulation. 1778.0001 Centennial Park ii Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table of Contents Chapter 1. Introduction ................................................................................................................................... 1 Chapter 2. Proposed Project ........................................................................................................................... 2 2.1 Location ................................................................................................................................................... 2 2.2 Proposed Project .................................................................................................................................... 2 Chapter 3. Methods .......................................................................................................................................... 4 Chapter 4. Background .................................................................................................................................... 5 4.1 Landscape Setting ................................................................................................................................... 5 4.2 Vegetation ................................................................................................................................................ 5 4.3 Soils .......................................................................................................................................................... 6 4.4 Stream and Wetland Inventories .......................................................................................................... 6 4.5 Priority Habitats and Species ................................................................................................................ 6 4.6 Precipitation ............................................................................................................................................ 6 Chapter 5. Results ............................................................................................................................................. 8 5.1 Wetlands .................................................................................................................................................. 8 5.2 Relict Edgecomb Creek Channel ....................................................................................................... 10 5.3 Artificial Drainage Ditches ................................................................................................................. 11 5.4 Offsite Improvements ......................................................................................................................... 12 5.5 Previously Identified Features ............................................................................................................ 13 Chapter 6. Regulatory Considerations ......................................................................................................... 15 6.1 Local Critical Areas Requirements ..................................................................................................... 15 6.2 State and Federal Considerations ....................................................................................................... 17 Chapter 7. Buffer Enhancement Plan .......................................................................................................... 20 7.1 Purpose and Need ................................................................................................................................ 20 7.2 Description of Impacts and Mitigation Strategy .............................................................................. 20 7.3 Approach and Best Management Practices ...................................................................................... 21 7.4 Goals, Objectives, and Performance Standards ............................................................................... 21 7.5 Plant Materials and Installation .......................................................................................................... 22 7.6 Maintenance & Monitoring Plan ........................................................................................................ 24 7.7 Reporting ............................................................................................................................................... 24 7.8 Contingency Plan ................................................................................................................................. 24 Chapter 8. Closure .......................................................................................................................................... 26 Chapter 9. References .................................................................................................................................... 27 Figures Figure 1. Vicinity Map. ................................................................................................................ 2 Figure 2. Aerial Image of the Subject Property. ........................................................................... 5 Tables Table 1. Precipitation Summary1. ................................................................................................. 7 Table 2. Wetland Summary .......................................................................................................... 8 Table 3. Wetland A Summary. ..................................................................................................... 9 Table 4. Precipitation Summary1. ............................................................................................... 13 1778.0001 Centennial Park iii Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table 5. Measures to Minimize Impacts to Wetlands .................................................................. 15 Appendices Appendix A â€” Methods and Tools Appendix B â€” Background Information Appendix C â€” Site Plans Appendix D â€” Data Forms Appendix E â€” Wetland Rating Forms Appendix F â€” Wetland Rating Maps Appendix G â€” Edgecomb Creek Relocation Documentation Appendix H â€” Qualifications 1778.0001 Centennial Park iv Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 1. Introduction Soundview Consultants LLC (SVC) is assisting Williams Investments (Applicant) with a Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan for a proposed multi-family residential and retail commercial development of an 8.81-acre site located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington. The subject property consists of one parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). The purpose of this Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan is to identify the presence of potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species that may be found on or near the subject property and to assess potential impacts to any such critical areas and/or species from the proposed project. The WSDOT recently completed a stream restoration project for Edgecomb Creek, which was previously located on the subject property; the stream has since been relocated offsite and associated offsite mitigation has already occurred for these impacts. This report provides conclusions and recommendations regarding: â€¢ Site description and areas of assessment; â€¢ Background research, identification, and assessment of potentially-regulated wetlands and fish and wildlife habitat and/or species in the vicinity of the proposed project; â€¢ Standard buffer recommendations, building setbacks, and development limitations; â€¢ Existing site map detailing identified critical areas; â€¢ Federal regulatory Considerations; â€¢ Proposed site plan with proposed project details; and â€¢ Supplemental information necessary for local, state, and federal regulatory review. 1778.0001 Centennial Park 1 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 2. Proposed Project 2.1 Location The subject property is located adjacent to 67th Avenue Northeast and 172nd Street Northeast/Highway 531 in the City of Arlington, Washington (Figure 1). The subject property consists of one tax parcel situated in the Southwest Â¼, of Section 23, Township 31 North, Range 5 East, W.M (Snohomish County Tax Parcel Number 31052300300800). To access the subject property from I-5 North take Exit 206 for WA-531E/172nd Street Northeast/Edgecomb Road toward Lakewood/Smokey Point. Continue for approximately 2.3 miles, where the subject property will be on the left at the intersection of 172nd Street Northeast and 67th Avenue Northeast. Figure 1. Vicinity Map. Subject Property Location 2.2 Proposed Project The Applicant proposes a phased mixed land use development consisting of multi-family residential units and commercial retail space with associated infrastructure to provide additional housing and commercial space within the City of Arlington. This report addresses Phase 1 of the development, which proposes approximately 152 residential units and approximately 8,000-square feet of retail area with associated parking, a recreational park, garden and open space. Both the park and open space meet the City of Arlingtonâ€™s requirements, and these areas will be vegetated with appropriate plant species. Phase 2 proposes an additional 36 residential units and associated parking spaces. The project was carefully designed in order to avoid and minimize impacts to critical areas to the greatest extent 1778.0001 Centennial Park 2 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 feasible, and no direct or indirect wetland impacts are proposed; however, Phase 2 of the project will require the unavoidable fill of the relict stream channel. Phase 2 of the proposed project is contingent on the declassification and deregulation of a relict stream (relict Edgecomb Creek channel) that has been successfully relocated offsite to the south by a WSDOT fish passage barrier culvert removal project. Additional information regarding the relict stream channel and its proposed declassification is provided in Section 5.2 of this report. SVC is currently gathering data and completing an analysis of the relict stream bed to determine if this portion of channel provides off-channel habitat for listed salmonids or if no habitat exists to support deregulating the area as an Fish and Wildlife Conservation Area (FHWCA). Phase 2 development proposes to fill the relict stream channel. The existing wetland (Wetland A) will not be directly impacted by the proposed development during Phase 1 or 2 of the proposed work, and minor work within the outer 25 percent of the buffer is proposed for the recreational path, as allowed per AMC 20.93.820.1.3(A). 1778.0001 Centennial Park 3 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 3. Methods SVC investigated, assessed, and delineated any potentially-regulated wetlands, waterbodies, and other fish and wildlife habitat on and within 225 feet of the subject property in October and November 2018. All determinations were made using observable vegetation, hydrology, and soils in conjunction with data from the U.S. Geological Survey (USGS) topographic maps, the Natural Resource Conservation Service (NRCS) soil survey, U.S. Fish and Wildlife Service (USFWS) National Wetland Inventory (NWI), Washington Department of Fish and Wildlife (WDFW) Priority Habitats and Species (PHS) and SalmonScape mapping tools, Department of Natural Resources (DNR) water typing system, Snohomish Countyâ€™s public geographic information systems (GIS), local precipitation data, and various orthophotographic resources. Appendix A contains further details for the methods and tools used to prepare this report. Wetland boundaries were determined in accordance with AMC 20.93.810, and as outlined in the U.S. Army Corps of Engineersâ€™ (USACE) Wetlands Delineation Manual (Environmental Laboratory, 1987) as modified according to the guidelines established in the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, Version 2.0 (USACE, 2010) and Field Indicators of Hydric Soils in the United States (USDA, 2018). Qualified wetland scientists marked boundaries of the onsite wetland with orange surveyorâ€™s flagging labeled alpha-numerically and tied to 3-foot lath or vegetation along the wetland boundary. Pink surveyorâ€™s flagging was labeled alpha- numerically and tied to 3-foot lath or vegetation at formal sampling locations to mark the points where detailed data was collected (DP-1 to DP-11). Additional tests pits were excavated at regular intervals inside and outside of the wetland boundary to further confirm the delineation. SVC classified all wetlands using both the hydrogeomorphic (Brinson, 1993) and Cowardin (Cowardin, 1979; Federal Geographic Data Committee, 2013) classification systems. Following classification and assessment, all wetlands were rated and categorized using the Washington State Wetlands Rating System for Western Washington (Hruby, 2014) and the definitions established in AMC 20.93.800(a). The fish and wildlife habitat assessment was conducted during the same site visits by qualified fish and wildlife biologists. The experienced biologists made visual observations using stationary and walking survey methods for both aquatic and upland habitats noting any special habitat features or signs of fish and wildlife activity. 1778.0001 Centennial Park 4 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 4. Background 4.1 Landscape Setting The subject property is located in the City of Arlington in a mixed-use setting and is currently undeveloped (Figure 2). The subject property abuts 67th Avenue Northeast to the west with commercial properties beyond; 172nd Street Northeast/Highway 531 to the south; a church to the west; and single-family residential and undeveloped forested areas to the north. Topography on the eastern portion of the site slopes down approximately 20 feet to the center, and then remains flat at approximately 140 feet above mean sea level to the western property boundary (Appendix B1). The study area is within the Snohomish River Watershed (Water Resources Inventory Area 7). Figure 2. Aerial Image of the Subject Property. Subject Property Location 4.2 Vegetation Vegetation on the subject property is dominated by upland grasses and forbs throughout the majority of the site, including orchard grass (Dactylis glomerata), colonial bentgrass (Agrostis capillaris), narrowleaf plantain (Plantago lanceolata), and common velvetgrass (Holcus lanatus). Forested cover is present through the center and southern site boundary following the relict stream channel. Dominant forest vegetation includes western red cedar (Thuja plicata), Douglas fir (Pseudotsuga menziesii), and red alder (Alnus rubra) with an understory of red-osier dogwood (Cornus alba), salmonberry (Rubus spectabilis), salal (Gaultheria shallon), and western swordfern (Polystichum munitum). 1778.0001 Centennial Park 5 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 4.3 Soils The NRCS soil survey identifies two soil series on the subject property: Everett gravelly sandy loam, 8 to 15 percent slopes, and Norma loam. An NRCS soil survey map is provided in Appendix B3. A description of the soil profiles is below. Everett gravelly sandy loam, 8 to 15 percent slopes (18) According to the NRCS survey, Everett gravelly sandy loam, 8 to 15 percent slopes, is a somewhat excessively drained soil formed in glacial outwash. Permeability is rapid, and water capacity is low. In a typical profile, the surface layer is dark brown very gravelly sandy loam about 12 inches thick. The upper part of the subsoil is brown very gravelly loamy sand about 5 inches thick. The lower part of the subsoil is a dark brown extremely gravelly sand to a depth of 60 inches of more. The subsoil is cemented in some locations. This soil is listed as non-hydric by NRCS. Norma loam (39) According to the NRCS survey, Norma loam is a deep, poorly drained soil formed in alluvium. In a typical profile, the surface layer is very dark gray loam about 10 inches thick. The subsoil is dark grayish brown sandy loam about 18 inches thick. The substratum is a dark gray sandy loam to a depth of 60 inches or more. This soil is listed as hydric by NRCS. 4.4 Stream and Wetland Inventories The USFWS NWI map (Appendix B2) identifies a potential riverine intermittent streambed seasonally flooded (R4SBC) watercourse along the southern property boundary in the same vicinity as the mapped DNR stream. The NWI also identifies a potential emergent wetland in the northeast corner of the site. The Snohomish County wetland and stream inventory (Appendix B4) identifies a stream (Edgecomb Creek) along the southern parcel boundary (DNR and WDFW refer to this stream as Middle Fork Quilceda Creek). The DNR stream typing map (Appendix B7) identifies Middle Fork Quilceda Creek, a Type F (fish-bearing) stream, running west to east along the southern property boundary. No other potentially-regulated streams or wetlands are documented within 225 feet of the subject property. 4.5 Priority Habitats and Species The WDFW PHS map (Appendix B4) identifies the potential presence of coho, Dolly Varden/bull trout, and fall chum in Middle Fork Quilceda Creek along the southern portion of the subject property. The WDFW Salmonscape map (Appendix B6) lists the documented presence of coho and chum salmon; modeled presence of chinook salmon, pink salmon, and winter steelhead trout; and presumed presence of Dolly Varden/bull trout in the stream along the southern portion of the subject property. No other priority habitats or species are documented within 225 feet of the subject property. 4.6 Precipitation Precipitation data was obtained from the National Oceanic and Atmospheric Administration (NOAA) weather station at Seattle-Tacoma Airport in order to acquire precipitation values during and preceding the field investigation. A summary of data collected is provided in Table 1. 1778.0001 Centennial Park 6 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table 1. Precipitation Summary1. Percent of Day 1 Week 2 Weeks Last 30 days Year-to-Date2 Date Day Of Before Prior Prior (Observed/Normal) (Observed/Normal) Normal (month/year) 10/12/18 0.00 0.00 0.78 1.15 1.91/2.01 1.09/0.97 95/112 11/4/18 0.03 0.18 1.23 3.24 4.02/3.98 4.33/4.26 101/102 5/7/19 0.00 0.00 0.00 0.14 2.86/2.53 28.63/31.36 113/91 Notes: 1. Precipitation level provided in inches. Data obtained from the NOAA (http://w2.weather.gov/climate/xmacis.php?wfo=sew) for Seattle- Tacoma airport. 2. Year-to-date precipitation is the total for the water year from October 1st to the onsite date(s). Precipitation levels during all the site visits were within the statistical normal range. The first site visit was conducted in the beginning of the water year and shows that the precipitation levels were 112 percent of normal at that time for the water year and within statistical normal for the previous 30 days (95 percent of normal). Precipitation levels during the second site visit were also noted to be within the statistical normal range; however, significant rainfall was recorded (3.24 inches) in the two weeks leading up to the site investigation during the November site visit, and over 1 inch was recorded in the week prior. Precipitation levels were also within statistical normal for the water year (91 percent of normal) and for the previous 30 days (113 percent of normal) during the May site visit, at the end of the water year. Such conditions were considered in making professional wetland boundary determinations. 1778.0001 Centennial Park 7 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 5. Results The October 2018 site investigation identified one potentially-regulated wetland (Wetland A) and one relict stream channel (Edgecomb Creek) on the subject property and one newly relocated stream (Edgecomb Creek) offsite to the south within 225 feet of the site. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, or priority species were identified in the vicinity of the subject property. 5.1 Wetlands The identified wetland contained indicators of wetland hydrology, hydric soils, and a predominance of hydrophytic vegetation according to current wetland delineation methodology. A map depicting the location and sizes of the wetland is presented in Appendix C. Data forms are provided in Appendix D, wetland rating forms are provided in Appendix E, and wetland rating maps are provided in Appendix F. Table 2 below summarizes the wetland identified during the site investigation. Table 2. Wetland Summary Predominant Wetland Classification / Rating Wetland Standard Wetland City of Size Onsite Buffer Width Cowardin1 HGM2 WSDOE3 4 (feet)5 Arlington (SF) A PSS/EMBC Depressional IV IV ~21,823 40 Notes: 1. Cowardin et al. (1979), Federal Geographic Data Committee (2013), or NWI Class based on vegetation: PSS = Palustrine Scrub Shrub, PEM = Palustrine Emergent; Modifiers for Water Regime: B = Seasonally Saturated, C = Seasonally Flooded. 2. Brinson, M. M. (1993). 3. Current WSDOE rating (Hruby, 2014). 4. AMC 20.93.800 wetland classification Arlington rating according to Washington State Wetland Rating System for Western Washington (Hruby, 2014). 5. AMC 20.93.830(b) standard buffer widths. Wetland A Wetland A is approximately 21,823 square feet (0.50 acre) in size and is located on the northern portion of the subject property, extending a little offsite to the north. Hydrology for Wetland A is provided by a seasonally-high water table, direct precipitation, surface runoff from adjacent uplands, and flow from a ditch that runs south to north through the wetland. Wetland vegetation is dominated by red alder saplings (Alnus rubra), salmonberry (Rubus spectabilis), and non-native invasive reed canarygrass (Phalaris arundinacea). Wetland A is a Palustrine Scrub Shrub/Emergent, Seasonally Saturated, and Seasonally Flooded wetland (PSS/EMBC). Per AMC 20.93.800, Wetland A is considered a Category IV depressional wetland. Table 3 provides a summary of Wetland A. 1778.0001 Centennial Park 8 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Table 3. Wetland A Summary. WETLAND A â€“ INFORMATION SUMMARY Location: Wetland A is located on the northern portion of the subject property, extending a little offsite to the north. Local Jurisdiction City of Arlington WRIA 7 â€“ Snohomish River WSDOE Rating IV (Hruby, 2014) City of Arlington IV Rating City of Arlington 40 feet Buffer Width Wetland Size ~ 21,823 SF Cowardin PSS/EMBC Classification HGM Classification Depressional Wetland Data Sheet(s) DP-4 Upland Data Sheet (s) DP-5 Boundary Flag color Orange Dominant Wetland vegetation is dominated by red alder saplings, salmonberry, and non-native Vegetation invasive reed canarygrass. Soils Hydric soil indicator A4 (Hydrogen Sulfide) was observed. Hydrology is likely provided by a seasonally-high water table, direct precipitation, Hydrology surface runoff from adjacent uplands, and flow from a ditch that runs south to north through the wetland. Rationale for Wetland boundaries were determined by a transition to hydric soils. Delineation Rationale for Local rating is based upon WSDOEâ€™s current rating system per AMC 20.93.800(a). Local Rating Wetland Functions Summary Wetland A provides moderate water quality functions. The wetland retains water seasonally and can provide some pollutant filtration as dense, herbaceous plants cover at Water Quality least half the area. This ability to provide pollutant filtration is valuable as the unit is in a sub-basin where water quality is an issue and TMDLs are in place. Wetland A scores 6 out of 9 points for water quality functions. Wetland A provides low hydrologic functions due to its small size, relative position within Hydrologic the sub-basin, and minimal cover of dense, rigid plants that would help slow surface flows. Wetland A scores 3 out of 9 points for hydrologic functions. Wetland A scores low for habitat functions due to lack of priority habitats, location within Habitat a high intensity land use landscape, and presence of invasive species. Wetland A scores 3 out of 9 points for habitat functions. The buffer surrounding Wetland A consists of fields and shrub areas that are degraded by Buffer Condition non-native invasive speciec such as cutleaf blackberry (Rubus laciniatus) and Himalayan blackberry (Rubus armeniacus). 1778.0001 Centennial Park 9 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 5.1.1 Wetland Buffers Under AMC 20.93.830(b)(1), the standard buffer for a Category IV wetlands is 40 feet by following the typical minimization measures. A 15-foot building setback is also required from the edge of all critical area buffers per AMC 20.93.340. The buffer for the onsite wetland is generally low functioning due the dominance of non-native invasive species such as blackberry and reed canarygrass. 5.2 Relict Edgecomb Creek Channel The site investigations identified a relict stream channel associated with Edgecomb Creek on the southern portion of the site. Until recently, Edgecomb Creek entered the subject property through a culvert (barrier 99058) in the southeastern portion of the subject property, flowing north under SR 531. The stream flowed west along the southern border of the subject property, and then continued offsite through an additional culvert (barrier 99059) that conveyed flow south, back under SR 531. Both culverts are identified as barriers to fish passage in the completed SR 531 Edgecomb Creek Fish Passage Project, and the approved WSDOT USFWS, and National Marine Fisheries Service (NMFS) No Effect Project Notification Form (NMFS and USFWS, 2016). The upstream barrier was removed with the elimination of that culvert during the 2017 implementation of the Edgecomb Creek Fish Passage Project, but the downstream fish passage barrier culvert remains. The 2017, SR 531 Edgecomb Creek Fish Passage Project relocated â€œa 330-foot section of channel between two culvert fish barriers that [had] non-functioning weirs that [posed] additional barriers to fish migrationâ€ (USFWS, 2016). Of this section of relocated stream, 275 feet were previously located on the subject property and covered approximately 5,000 square feet of area. The relocation of the stream offsite and elimination of both culverts was expected to eliminate the fish passage barriers and potential fish stranding under SR 531. The downstream culvert was not removed with this 2017 construction project and it remains in place; however, it conveys only stormwater and untreated sheet flow from the road during precipitation events since the stream was rerouted to the new channel. The stream relocation project resulted in the creation of over 650 linear feet of meandering stream channel offsite to south of the SR 531 as mitigation for the project. Both culverts which originally connected onsite portions of the drainage to Edgecomb creek were identified as fish passage barriers, and the proposed project action included â€œconstructing the new stream channel, screening and blocking barrier 99058, plugging and abandoning barrier 99059, diverting the stream into the new section of channel, and turning over the existing channel to the City of Arlington for stormwater treatmentâ€. Furthermore, the project was implemented to â€œimprove access for salmon to 1.77 miles of upstream habitat, after removing the fish barrierâ€. The documents state that â€œthe abandoned channel is considered fish habitat that will be displaced and replaced by the constructed and improved stream channelâ€¦â€ (USFWS, 2016). In addition to increased fish habitat function, the completed project was constructed to improve water quality; the project findings include the statement: â€œexisting stormwater drainage from SR 531 drains north directly to Edgecomb Creek, and this section of the stream will be moved, thus improving water quality for Edgecomb Creek. The project removes two fish barriers and a series of weir barriers in the stream to improve passage. Following relocation, more of the stream will be connected to adjacent wetlands increasing the quantity of rearing habitat available to salmon that spawn in the creek. Edgecomb Creek will have at least 200 additional feet of stream length due to the stream relocationâ€ (USFWS, 2016). 1778.0001 Centennial Park 10 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 In addition to the USFWS consultation, NMFS was consulted and includes similar description to the USFWS form, with the exception on pages 2 and 4 of the NMFS document which indicate barrier 99058 will be left open to allow Edgecomb Creek to backwater into a portion of the remnant channel and retain this area as refugia habitat during high flows. However, further in this document on page 10 under â€œproject descriptionâ€, the document states that fish will be excluded from the existing channel and moved downstream of the project area with the remnant channel and dysfunction weirs turned over to the City of Arlington. The document also states that barrier 99059 will be screened and blocked with structural rock and streambank material to allow drainage from the abandoned stream channel that will continue to drain stormwater runoff, effectively isolating the remnant portions of the onsite drainage from stream habitat function. In addition, the construction plan set included in the NMFS document shows the culvert (barrier 99059) â€œTo be Abandonedâ€. As a result of the stream relocation, the relict channel no longer supports baseflow and appears to only convey stormwater from direct precipitation, overland flow from a nearby roadside ditch, and untreated runoff from SR 531. During the October 2018 site visit, no baseflow was noted in the relict channel, although pooled water was observed in scour holes and in the culvert itself. Similarly, during the November 2018 site visit, only shallow pools of water were observed in scoured areas despite recent heavy rainfall. Although the stream channel is abandoned, the culvert on the downstream reach is still in place, allowing for the stormwater that flows through the channel to enter Edgecomb Creek south of the subject property. As untreated stormwater during storm events is the main hydrology source for the relict channel, the channel will likely accumulate large loads of sediment and debris from SR 531 and the roadside ditch over time, and the relict channel could begin to fill in. The relict channel does not provide fish habitat due to the lack of stream hydrology and habitat connectivity to downstream fish-bearing waters. In addition, as identified on the USFWS form, barrier 99059 is a fish blockage culvert and presents the potential for fish stranding in the event high flood waters if fish are able to access the remaining onsite channel. As the relict channel is not considered a typed stream, it is not subject to stream buffers under AMC 20.93.700, but it will be considered a FHWCA per AMC 20.93.400 as the channel previously provided habitat for salmonids. Therefore, the relict channel will be subject to a 100-foot native growth protection easement and additional 50-foot management zone until such a time that this portion of channel is deregulated as a FHWCA. 5.2.1 Stream Buffers The relocated offsite Edgecomb Creek channel is considered a Type F water with documented Coho and Chum presence according to the WDFW SalmonScape inventory, which are considered ESA species, and therefore requires a standard 150-foot buffer per AMC Table 20.93-3 SalmonScape inventory. However, SR 531 intersects the buffer associated with offsite Edgecomb Creek, entirely interrupting the buffer from projecting onto the subject property, therefore, no buffer associated with Edgecomb Creek should be located on the subject property. 5.3 Artificial Drainage Ditches Three onsite linear ditches were observed on or near the subject property; all of which appear to be artificial and intentionally created. While the soils on-site are largely mapped as hydric, investigations 1778.0001 Centennial Park 11 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 found the soils throughout the site lack redoximorphic features and represent upland soil conditions. Therefore, all the ditches appear to have been excavated from non-hydric soils. Northern Ditch The northern ditch runs east to west along the northern parcel boundary and through Wetland A, receiving flows from the central ditch, and then continues offsite to the east into the Cityâ€™s stormwater system at the intersection of 67th Avenue Northeast and Highland View Drive, as documented in the Cityâ€™s stormwater infrastructure inventory. Historic aerials indicate that the site was previously used as agricultural land in the 1950s and 1960s (Appendices B8 and B9); the ditch is faintly visible in these aerials in the northern portion of the site. The ditch appears to be manmade and only conveys stormwater through the site. Central Ditch The central ditch flows south to north through the center of the site, beginning as a swale and flowing through Wetland A, and then flowing into the northern ditch. This ditch does not appear to be present in the 1954 and 1969 historic aerial photographs, but does appear in a 1990 aerial photograph, suggesting that it was likely established sometime between 1969 and 1990. The ditch appeared to be intentionally excavated to help drain the site for agricultural purposes. Roadside Ditch A manmade roadside ditch is present along the southern portion of the site which originates offsite to the east. The ditch flows in an east to west orientation, eventually discharging into the relict Edgecomb Creek channel and is the only source of hydrology for the relict channel. The ditch appears to have been previously excavated and is vegetated by grass upslope along the sides of the banks to the east. The ditch conveys only stormwater from upslope and surface flow from the highway as documented on the Cityâ€™s stormwater infrastructure map. 5.4 Offsite Improvements The WSDOT completed the Edgecomb Creek restoration project in order to improve fish passage of the stream. Edgecomb Creek has been relocated offsite to the south of the subject property. The new reach of the channel is located entirely south of SR 531, eliminating the roadway crossings, and therefore, also eliminating the need for the culverts which may present barriers to fish passage. The relocation project has resulted in an increase of 650 linear feet of new stream channel, restored habitat features, and unimpeded access to upstream spawning habitat. The project has provided an overall benefit to the function of the stream by removing these fish barriers. According to the memorandum by WSDOT, approximately 0.13 acres and 329 linear feet of the stream were permanently impacted by this project due to abandonment of the channel on the subject property. Approximately 0.09 acre and 189 linear feet of the riffle and pool habitat within Edgecomb Creek were impacted temporarily for construction access and water handling. Mitigation for these impacts included the creation of 0.15 acre/665 linear feet of new stream area, as well as restoration within the stream channel; restoration of 0.48 acre of an adjacent wetland; and improved connectivity between Edgecomb Creek and the adjacent wetlands. 1778.0001 Centennial Park 12 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 The instream restoration and improvements included the elimination of fish barriers, increased channel meander and overall stream habitat area, improved floodplain connectivity to adjacent wetlands, addition of gravel substrate, limiting the extent of downstream grading, and stabilizing new stream meander banks to provide habitat for adult and juvenile salmon. Restoration for the adjacent riparian habitat was also completed and included: replanting affected areas with native vegetation; stabilizing stream meander bends; planting roadside areas with low growing woody vegetation; planting occasionally or seasonally flooded streambanks with appropriate native plant species that will aid in detaining flows and providing shade and cover habitat for juvenile fish and wildlife species; and planting seasonally flooded streambanks with emergent plants with fibrous roots to stabilize the banks and produce organic matter and support habitat development for macroinvertebrates. The restoration site will be monitored annually for 10 years following its construction. The riparian plantings will be monitored for three years to ensure planting survival, and the stream will be monitored in years 1, 5, and 10 for fish passage. A contingency plan is in place to address fish passage, plant survival, herbivory, weed control, and vandalism. 5.5 Previously Identified Features According to WSDOTâ€™s â€œAquatic Resources Assessment Reportâ€ dated November 2016, an area along the northeastern extent of the relict onsite channel was considered a potential wetland during the project and was identified as â€œWetland 3â€. Additionally, WSDOT identified the roadside ditch as a potential jurisdictional WOTUS. Please refer to Chapter 6 for WOTUS considerations. The WSDOT delineation occurred during January and February of 2016 (wet season), during a period of time in which precipitation was above statistically normal levels. Precipitation data was obtained from the NOAA weather station at Seattle-Tacoma Airport in order to obtain precipitation values during and preceding the prior field investigation efforts from WSDOT for the general Puget Sound area. While this weather station is not in the immediate vicinity of the subject property, it is the most reliable weather station with consistent and scientifically accurate measurements. A summary of data collected is provided in Table 4. Table 4. Precipitation Summary1. Percent of Day 1 Week 2 Weeks Last 30 days Year-to-Date2 Date Day Of Before Prior Prior (Observed/Normal) (Observed/Normal) Normal (month/year) 1/28/16 0.61 0.82 3.91 5.51 7.21/5.58 31.60/20.50 129/154 2/25/16 0.00 0.02 0.76 3.61 12.04/7.96 36.60/24.10 151/152 Notes: 3. Precipitation levels provided in inches. Data obtained from the NOAA (http://w2.weather.gov/climate/xmacis.php?wfo=sew) for Seattle- Tacoma airport. 4. Year-to-date precipitation is the total for the water year from October 1st to the onsite date(s). Precipitation levels during the January 2016 site visits during which time Wetland 3 was delineated were well above the statistical normal for the water year and 30 days prior to the visit. In addition, over 5.5 inches of precipitation was recorded in the two weeks leading up to the site investigation and almost 4 inches was recorded one week leading up to the site investigation. Therefore, hydrologic conditions encountered by WSDOT would have been much wetter than normal, potentially resulting in false-positive indicators of wetland hydrology. 1778.0001 Centennial Park 13 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 The area identified by WSDOT as Wetland 3 was investigated by SVC and was determined to be non- wetland as it lacks hydric soils. While hydrophytic vegetation is present due to the presence of common facultative (FAC) species typical of disturbed and/or upland area, and wetland hydrology is present during the wet season in one of the data plots, the hydrology does not appear to be sustained long enough throughout the growing season to develop redoximorphic features in the soil. Previous investigations by WSDOT identified hydric soils onsite; however, multiple test pits and formalized data plots in this area were unable to replicate these findings. SVC found that the soils in these areas lacked redox starting within the first 12 inches of the soil profile, indicating that a seasonally high- water table (water table within 12 inches of the soil surface) is not present during the growing season, and therefore the redox features have not formed. In addition, a depleted layer was also not found within 12-inches of the soil surface. SVC collected two data plots (DP-8 and DP-9) in this area which confirm the lack of hydric soils. The WSDOT assessment report indicates that the roadside ditch that contributes to the relict Edgecomb Creek is considered a jurisdictional ditch. According to the report the ditch exhibited signs of scour, the presence of a defined channel with bed and bank, debris rack, areas of flowing or standing water, and clear areas of gravel devoid of vegetation. The report later notes that no stream gravel was observed in the ditch. It should be noted that both the WSDOT investigations occurred during a wet season with significantly higher levels of precipitation than normal, which likely exaggerated hydrology both on and offsite. SVC completed investigations during statically normal precipitation levels and did not observe any of these characteristics. No flowing or standing water was observed during the fall investigation, and the ditch was noted to be vegetated with grass throughout the channel as well as the banks. No stream cobble or gravel was observed in the ditch. A conditionally approved site plan dated September 12, 2006 depicts a wetland, labeled â€œWetland Zâ€, in the forested area in the center of the site. SVC collected two additional data plots (DP-10 and 11) in this area to support a non-wetland determination. While both areas exhibit a predominance of hydrophytic vegetation, neither location displays evidence of primary wetland hydrology or hydric soils. In fact, soils lacked all evidence of redoximorphic features. Soils at DP-10 are characterized by 13 inches of very dark brown sandy loam underlain by three inches of a dual matrix of very dark grayish brown and very dark brown sandy loam, over black silt loam. DP-11 is characterized by 8 inches of very dark brown sandy loam underlain by a dual matrix of dark yellowish brown and very dark grayish brown gravelly sandy loam soils. It should be noted that the delineation that identified this area as wetland was completed sometime between 2001 and 2006 using an older methodology. The Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, Version 2.0 (USACE, 2010) has since been published and is acknowledged as the best available science, and therefore is used as the standard methodology for delineations. This is an important distinction as the old methodology identified any â€œdarkâ€ soil as being hydric, whereas the new methodology requires additional features such as a depleted matrix or redox in addition to a â€œdarkâ€ surface soil. Hydric soil indicators are also periodically reviewed and updated and published in the Field Indicators of Hydric Soils in the United States (USDA, 2018). Therefore, the area identified on the 2006 plan as â€œWetland Zâ€ may have previously met the old wetland criteria but is not considered wetland under the updated delineation methodology. 1778.0001 Centennial Park 14 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 6. Regulatory Considerations The site investigations in fall of 2018 identified and delineated one potentially-regulated wetland (Wetlands A) and one relict stream channel on the subject property, and one regulated stream channel offsite to the south within 225 feet of the site. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, or priority species were identified on or adjacent to the subject property during the site investigations. 6.1 Local Critical Areas Requirements 6.1.1 Wetland Buffers AMC 20.93.800(a) has adopted the 2014 Revised Washington State Wetland Rating System for Western Washington (Hruby, 2014). With this system, Category IV wetlands are those that generally provide low levels of function and score less than 16 points. The onsite Wetland A is classified as a Category IV wetland. Under AMC 20.93.830, the standard buffers for a Category IV wetland is 40 feet assuming the implementation of all minimization measures listed in ACM Table 20.93-5 (Table 5 below). Walking trails are proposed within outer twenty-five percent of the wetland buffer. Per AMC 20.93.430.3.A, walking trails are allowed in this portion of the buffer provided that they avoid the removal of significant trees, utilize pervious surfaces, are no more than five feet in width, and are limited to pedestrian use. Per AMC 20.93.830.b.3, the standard buffer widths assume that the buffer is vegetated with an appropriate native plant community; if the buffer is unvegetated, sparsely vegetated, or vegetated with non-native invasive, then the buffer should be planted or widened. The existing buffer for Wetland A is currently degraded with a presence of non-native, invasive species. Therefore, a buffer enhancements plan is proposed, and will include removing non-native, invasive species and replanting with native species, which will result in an improvement of ecological function of the wetlands and buffers over current conditions. Table 5. Measures to Minimize Impacts to Wetlands Examples of Activities and Uses that Cause Examples of Measures to Minimize Impacts Disturbance Disturbances Lights â€¢Parking lots â€¢Direct lights away from critical areas and â€¢Warehouses buffers â€¢Manufacturing â€¢Day use only regulations preventing the need â€¢Residential for lights â€¢Parks â€¢Timer on lights Noise â€¢Manufacturing â€¢Locate activity that generates noise away from â€¢Residential wetlands â€¢Seasonal limitations on hours of operation Toxic runoff* â€¢Parking lots â€¢Route all new, untreated runoff away from â€¢Roads wetland while ensuring wetland is not dewatered â€¢Manufacturing â€¢Establish covenants limiting use of pesticides â€¢Residential areas 1778.0001 Centennial Park 15 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Examples of Activities and Uses that Cause Examples of Measures to Minimize Impacts Disturbance Disturbances â€¢Application of agricultural pesticides within 150 ft of critical area or buffer â€¢Landscaping â€¢Apply integrated pest management Stormwater runoff â€¢Parking lots â€¢Retrofit stormwater detention and treatment for â€¢Roads roads and existing adjacent development â€¢Manufacturing â€¢Prevent channelized flow from lawns that â€¢Residential areas directly enters the buffer â€¢Commercial â€¢Landscaping Change in water â€¢Impermeable surfaces â€¢Infiltrate or treat, detain, and disperse into regime â€¢Lawns buffer new runoff from impervious surfaces and â€¢Tilling new lawns â€¢Forest and forest duff removal â€¢Retain minimum forest and forest duff Pets and human â€¢Residential areas â€¢Use privacy fencing; plant dense vegetation to disturbance â€¢Parks delineate buffer edge and to discourage disturbance using vegetation appropriate for the ecoregion; place wetland and its buffer in a separate tract Dust â€¢Construction sites â€¢Use best management practices to control dust Disruption of â€¢Roads â€¢Maintain connection to offsite areas that are corridors or â€¢Residential undisturbed connections â€¢Commercial â€¢Restore corridors or connections to offsite â€¢Manufacturing habitats by replanting â€¢Landscaping â€¢Stormwater * These examples are not necessarily adequate for minimizing toxic runoff if threatened or endangered species are present at the site. 6.1.2 Stream Buffers The relocated offsite Edgecomb Creek channel is considered a Type F-ESA water with documented Coho and Chum presence according to the WDFW SalmonScape inventory, and therefore requires a standard 150-foot buffer per AMC Table 20.93-3 . However, SR 531 intersects the buffer associated with offsite Edgecomb Creek, entirely interrupting the buffer from projecting onto the subject property, therefore, no buffer associated with Edgecomb Creek should be located on the subject property. 6.1.3 Fish and Wildlife Habitat Conservation Area Due to the successful relocation of the channel offsite, the Applicant is in the process of declassifying the relict channel as a stream as it no longer meets the definition of a typed waterbody described in WAC 222-16-030 or AMC 20.93.700. A technical memorandum and water type modification form has been submitted to DNR under separate cover (SVC, 2019). The relict channel was previously utilized by salmonid species and therefore is considered FHWCA under AMC 20.93.400. SVC is 1778.0001 Centennial Park 16 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 currently completing a bed gradient study to determine if the channel continues to provide habitat and qualify as a FWHCA or if it should be deregulated; the findings will be submitted under separate cover. However, until it is formally declassified and deregulated, the relict channel is subject to a 100-foot native growth protection easement and additional 50-foot management zone per AMC 20.93.440(a). Activities proposed during Phase 1 of the development will avoid all impacts to the 100-foot native growth protection easement, and 50-foot management zone. Should the relict channel no longer meet the FHWCA, the Client will seek to deregulate the relict stream channel, and plan to develop that portion of the site during Phase 2. 6.2 State and Federal Considerations 6.2.1 Potential Waters of the United States (WOTUS) The results of the 2018 site investigations identified one wetland, one relict stream channel (Edgecomb Creek), and three excavated drainage ditches on the subject property. Additional wetlands were identified by WSDOT offsite to the south of SR 531 and are associated with Edgecomb Creek restoration area. The onsite wetland is a small depressional wetland that receives water primarily from direct precipitation and surface runoff from adjacent upland areas. The offsite wetland to the south appears to be larger depressional and riverine systems associated with Edgecomb Creek. The ditches appear to have been originally constructed in upland areas for the purpose of making property boundaries and conveying stormwater runoff from adjacent roads, uplands, and for agricultural purposes. 6.2.2 The Federal Clean Water Rule The Federal Register published a final revised Clean Water Rule: â€œDefinition of Waters of the United Statesâ€ on 29 June 2015 (FR Vol 30, No. 124; pages 37054 â€“ 37127) that defines the scope of waters protected under the Federal Clean Water Act (CWA). The effective date of this rule was to be 28 August 2015. This rule provided a definition of Waters of the United States (WOTUS) that differed from that in the 2 December 2008 joint memorandum from EPA and USACE following the U.S. Supreme Courtâ€™s Decision in Rapanos v. United States & Carabell v. United States (USACE, 2008). Implementation of the 2015 Clean Water Rule was stayed by the U.S. 6th Circuit Court of Appeals on October 9, 2015-- a little over one month after that ruleâ€™s effective dateâ€”until recently. On February 28, 2017 President Trump issued Executive Order 13778 ordering EPA and USACE to review and or rescind the 2015 Clean Water Rule. This was followed by the Suspension Rule (6 February 2018), which delayed implementation of the 2015 Clean Water Rule to 6 February 2020 and provided time for a two-part rulemaking process to revise the definition of WOTUS. But in August 2018, Judge David C. Norton of the U.S. District Court for South Carolina issued an injunction claiming that the Suspension Rule was in violation of the Administrative Procedures Act. This injunction effectively reinstated the 2015 Clean Water Rule in 26 states, including Washington. Therefore, at the time of writing this report, the 2015 Clean Water Rule is currently in use within the State of Washington to describe waters that are to be regulated under Section 404 of the CWA. The 2015 Clean Water Rule generally describes waters that are WOTUS directly, that are waters of the US because they are impoundments or tributaries to WOTUS, and that are waters of the US because 1778.0001 Centennial Park 17 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 they are adjacent to or because they have a significant nexus to WOTUS. The Rule also describes waters that are not WOTUS. These general descriptions are summarized in the paragraphs that follow. The 2015 Clean Water Rule describes the following waters where Section 404 jurisdiction would be asserted and considered waters of the United States (WOTUS): (1) traditional navigable waters: all waters which are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce, included all waters which are subject to the ebb and flow of the tide, (2) interstate waters (including interstate wetlands), and (3) the territorial seas. The following additional waters may be considered WOTUS in Washington State: (4) all impoundments of traditional navigable waters, interstate waters, and territorial seas, (5) all â€œtributariesâ€ to a traditional navigable water, interstate water, or territorial sea, (6) all waters â€œadjacentâ€ to waters within categories 1 through 5 above, (7) all waters located within the 100-year floodplain of a traditional navigable water, interstate water, or territorial sea, and (8) all waters within 4,000 feet of the high tide line or ordinary high water of a WOTUS that are determined on a case-specific basis to have a â€œsignificant nexusâ€ to a traditional navigable water, interstate water, or territorial sea. Edgecomb Creek is not a traditional navigable water (TNW), but is a tributary to the Puget Sound, which is identified as a TNW (USACE, 2008). Therefore, the relocated Edgecomb Creek is likely considered a WOTUS through criterion 5 above. Wetland A is located within 4,000 feet from the Edgecomb Creek channel and would likely be considered a WOTUS through a significant nexus test (criterion 8 above), subject to Section 404 jurisdiction. In addition, the 2015 Clean Water Rule identifies fifteen waters or areas where jurisdiction will NOT be asserted, even if they otherwise meet the description of WOTUS: (1) waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of the CWA, (2) prior converted cropland, (3) ephemeral ditches that are not a relocated tributary or excavated tributary, (4) ditches with intermittent flow that are not a relocated tributary, excavated in a tributary, and that do not drain wetlands, (5) ditches that do not flow, directly or indirectly, into a traditional navigable water, interstate water, or territorial sea, (6) artificially irrigated areas that would revert to dry land should irrigation cease, (7) artificially constructed lakes and ponds, created in dry land, such as farm and stock watering ponds, irrigation ponds, settling basins, fields flooded for rice growing, log cleaning ponds, or cooling ponds, (8) artificial reflecting pools or swimming pools created in dry land, (9) small ornamental waters created in dry land, (10) water-filled depressions created in dry land incidental to mining or construction activity, including pits excavated for obtaining fill, sand, or gravel that fill with water, (11) erosional features, including gullies, rills, and other ephemeral features that do not meet the definition of tributary, non-wetland swales, and lawfully constructed grassed waterways, (12) puddles, (13) groundwater, including groundwater drained through subsurface drainage systems, (14) stormwater control features constructed to convey, treat, or store stormwater that are created in dry land, and (15) wastewater recycling structures constructed in dry land; detention and retention basins built for wastewater recycling; groundwater recharge basins; percolation ponds built for wastewater recycling; and water distributary structures built for wastewater recycling. All three of the identified ditches onsite appear to have been excavated from dry land. The ditches are within a soil map unit classified as hydric soil, however test pits in some areas adjacent to the ditches and other data plots in upland areas of the site do not meet for hydric soils. The ditches meet 1778.0001 Centennial Park 18 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 criteria 3 and 5 listed above and therefore appear to not be subject to regulation under Section 404 of the CWA. 6.2.3 Permitting Requirements Wetland development approvals, including local review, Federal permits, and State certification, are necessary in order for the proposed project to proceed. The project does not propose any fill within a wetland or its buffer. During Phase 2, the project will propose the filling of the relict stream channel in order to construct a portion of the multi-family dwellings. The required fill within the channel will account for 210 linear feet of the relict channel, confirmation of coverage under a simplified CWA Section 404 Nationwide Permit (NWP) should be the limit of State and Federal permitting efforts under Sections 401 and 404 of the CWA. Final determination of NWP coverage is at the discretion of the USACE, and other minor NWPs, such as NWPs 29 and 39, may be also be used to authorize this project. Therefore, careful consideration of regional permit conditions has transpired during the planning process in order to satisfy the requirements for a variety of NWPs. Given that the stream channel has already been relocated offsite and appropriate mitigation has been completed in the form of channel creation, stream restoration, and riparian habitat restoration, no further mitigation or restoration should be required for the proposed filling activity. 1778.0001 Centennial Park 19 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 7. Buffer Enhancement Plan The following sections present the proposed buffer enhancement plan to address the low functioning buffer of onsite Wetland A. The proposed plan closely adheres to local Critical Areas regulations specified in AMC Chapter 20.93. 7.1 Purpose and Need The purpose of the proposed project is to provide additional housing units, park, open space, and retail area the City of Arlington. The project does not propose the loss of any wetland area or habitat; however, the existing buffer is degraded by non-native invasive species including reed canarygrass and Himalayan blackberry. Per AMC 20.93.830(b)(3), in order to utilize the standard buffer width, the buffer must be planted with appropriate native vegetation to ensure adequate buffer functionality. As a result, a buffer enhancement plan is proposed. 7.2 Description of Impacts and Mitigation Strategy The project was carefully designed in order to avoid impacts to critical areas to the greatest extent feasible, and no direct impacts to the wetland nor its buffer are proposed. However, the existing buffer is degraded by the presence of non-native invasive species, and therefore does not provide adequate buffer functions. The proposed buffer enhancement actions will improve ecological functions and value by providing additional functions according to the needs of the site and watershed and providing an overall improvement to wetland and buffer function. Removing wetland buffer degradations such as non-native, invasive vegetation and replacing with native plantings within the buffer will restore the habitat functions and critical area protection and improve hydrologic function and water quality of runoff leaving the project site. A diverse herbaceous layer will be established to provide browse, cover, and nesting for small mammals, which in turn provide prey for raptors and other small mammals. The proposed enhancement plan will provide a net gain in function and improved protection to the wetlands from the proposed development. The wetland buffer enhancements proposed will include, but may not be limited to, the following recommendations: â€¢ Enhance a total of 18,632 square feet of onsite buffer area for Wetland A. â€¢ Pre-treat invasive plants with a Washington Department of Agriculture approved herbicide. After pre-treatment, grub to remove the invasive plants and replant all cleared areas with native trees, shrubs, and ground covers listed in Appendix C; Pre-treatment of the invasive plants should occur a minimum of two weeks prior to removal; â€¢ Replant the enhancement area with native trees, shrubs, and groundcovers listed in Appendix C, or substitutes approved by the responsible wetland scientist, to help retain soils, filter stormwater, and increase biodiversity; â€¢ An approved native seed mix will be used to seed the disturbed mitigation areas after planting; â€¢ Maintain and control invasive plants annually, at a minimum, or more frequently if necessary. Maintenance to reduce the growth and spread of invasive plants is not restricted to chemical applications but may include hand removal, if warranted; â€¢ Provide dry-season irrigation as necessary to ensure native plant survival; 1778.0001 Centennial Park 20 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 â€¢ Direct exterior lights away from the wetlands wherever possible; and â€¢ Place all activities that generate excessive noise (e.g., generators and air conditioning equipment) away from the wetlands where feasible. 7.3 Approach and Best Management Practices The proposed wetland buffer enhancement plan is intended to provide increased wetland protections by maintenance and improvement of wetland buffer functions. Enhancement of the wetland buffer should occur concurrently with the proposed development construction. TESC measures will be implemented according to the Stormwater Pollution Prevention Plan submitted as a part of the site development permit. Recommended TESC measures include high-visibility fencing (HVF) installed around native vegetation along the modified perimeter of the buffer, silt fencing between the graded areas and undisturbed buffer, plastic sheeting on stockpiled materials, and seeding of disturbed soils. These TESC measures should be installed prior to the start of development or enhancement actions and actively managed and overseen by the Certified Erosion and Sedimentation Control Lead (CESCL) for the duration of the project. All equipment staging and materials stockpiles should be kept out of the identified wetland and associated buffer, and the area will need to be kept free of spills and/or hazardous materials. All fill material and road surfacing will be sourced from upland areas onsite or from approved suppliers and will be free of pollutants and hazardous materials. Construction materials along with all construction waste and debris will be effectively managed and stockpiled on paved surfaces and kept free of the remaining wetland and buffer areas. Following completion of the development, the entire site will be cleaned and detail graded using hand tools wherever necessary, and TESC measures will be removed. 7.4 Goals, Objectives, and Performance Standards The goals and objectives for the proposed wetland buffer enhancement actions will be based on providing additional habitat and protection for the onsite wetland and providing supplementary water quality and hydrological functions. Wetland buffer enhancement actions are capable of improving habitat function for the wetland over time by establishment of a dense vegetated barrier between the project and the critical area. The goals and performance standards for the enhancement actions are outlined below. Goal 1 â€“ Improve and protect wetland buffer functions. Objective 1 â€“ Establish areas of native trees and shrubs to create diverse horizontal and vertical canopy structure and additional wildlife habitat. Performance Standard 1 â€“ By the end of Year 5, the non-compensatory buffer enhancement area will have at least 2 species of native trees, 3 species of native shrubs; native volunteer species will be included in the count. To be considered, the native species must make up at least 5 percent of the vegetation class. Performance Standard 2 â€“ Minimum plant survivorship will be at 100 percent of installed plants at the end of Year 1 (replacement of lost plants allowed), 85 percent at the end of Year 2, and 75 percent at the end of Year 3. 1778.0001 Centennial Park 21 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Performance Standard 3 â€“ Non-native invasive plants will not make up more than 20 percent total cover in any growing season during the monitoring period following Year 1. 7.5 Plant Materials and Installation 7.5.1 Plant Materials All plant materials to be used for the enhancement actions will be nursery grown stock from a reputable, local source. Only native species are to be used; no hybrids or cultivars will be allowed. Plant material provided will be typical of their species or variety; if not cuttings they will exhibit normal, densely-developed branches and vigorous, fibrous root systems. Plants will be sound, healthy, vigorous plants free from defects, and all forms of disease and infestation. Container stock shall have been grown in its delivery container for not less than six months but not more than two years. Plants shall not exhibit rootbound conditions. Under no circumstances shall container stock be handled by their trunks, stems, or tops. Seed mixture used for hand or hydroseeding shall contain fresh, clean, and new crop seed mixed by an approved method. The mixture is specified in the plan set. All plant material shall be inspected by a qualified Wetland Scientist upon delivery. Plant material not conforming to the specifications below will be rejected and replaced by the planting contractor. Rejected plant materials shall be immediately removed from the site. Fertilizer will be in the form of Agroform plant tabs or an approved like form. Mulch will consist of sterile wheat straw for seeded areas (if necessary) and clean recycled wood chips approximately Â½- inch to 1-inch in size and Â½-inch thick for woody plants. The mulch material may be sourced from non-invasive woody materials sourced from the land clearing activities. 7.5.2 Plant Scheduling, Species, Density, and Location Plant installation should occur as close to conclusion of clearing and grading activities as possible to limit erosion and limit the temporal loss of function provided by the wetland and buffer. All planting should occur between September 1 and May 1 to ensure plants do not dry out after installation, or temporary irrigation measures may be necessary. All planting will be installed according to the procedures detailed in the following subsections and as outlined on the site plans in Appendix C. 7.5.3 Quality Control for Planting Plan All plant material shall be inspected by the Wetland Scientist upon delivery. Plant material not conforming to the specifications above will be rejected and replaced by the planting contractor. Rejected plant materials shall be immediately removed from the site. Under no circumstances shall container stock be handled by their trunks, stems, or tops. The landscape contractor shall provide the Wetland Scientist with documentation of plant material that includes the supplying nursery contact information, location of genetic source, plant species, plant quantities, and plant sizes. 7.5.4 Product Handling, Delivery, and Storage All seed should be delivered in original, unopened, and undamaged containers showing weight, analysis, and name of manufacturer. This material should be stored in a manner to prevent wetting 1778.0001 Centennial Park 22 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 and deterioration. All precautions customary in good trade practice shall be taken in preparing plants for moving. Workmanship that fails to meet industry standards will be rejected. Plants will be packed, transported, and handled with care to ensure protection against injury and from drying out. If plants cannot be planted immediately upon delivery they should be protected with soil, wet peat moss, or in a manner acceptable to the Wetland Scientist. Plants and mulch not installed immediately upon delivery shall be secured on the site to prevent theft or tampering. No plant shall be bound with rope or wire in a manner that could damage or break the branches. Plants transported on open vehicles should be secured with a protective covering to prevent windburn. 7.5.5 Preparation and Installation of Plant Materials The planting contractor shall verify the location of all elements of the wetland buffer enhancement plan with the responsible Wetland Scientist prior to installation. The responsible Wetland Scientist reserves the right to adjust the locations of landscape elements during the installation period as appropriate. If obstructions are encountered that are not shown on the drawings, planting operations will cease until alternate plant locations have been selected by and/or approved by the Wetland Scientist. Circular plant pits with vertical sides will be excavated for all container stock. The pits should be at least 1.5 times the width of the rootball, and the depth of the pit should accommodate the entire root system. Please refer to planting detail in Appendix C. Broken roots should be pruned with a sharp instrument and rootballs should be thoroughly soaked prior to installation. Set plant material upright in the planting pit to proper grade and alignment. Water plants thoroughly midway through backfilling and add Agroform tablets. Water pits again upon completion of backfilling. No filling should occur around trunks or stems. Do not use frozen or muddy mixtures for backfilling. Form a ring of soil around the edge of each planting pit to retain water and install a 4- to 6-inch layer of mulch around the base of each container plant. 7.5.6 Temporary Irrigation Specifications While the native species selected for the wetland buffer enhancement actions are hardy and typically thrive in northwest conditions and the proposed actions are planned in areas with sufficient hydroperiods for the species selected, some individual plants might perish due to dry conditions. Therefore, irrigation or regular watering may be provided as necessary for the duration of the first two growing seasons, two times per week while the native plantings become established. If used, irrigation will be discontinued after two growing seasons. Frequency and amount of irrigation will be dependent upon climatic conditions and may require more or less frequency watering than two times per week. 7.5.7 Invasive Plant Control and Removal Invasive species to be removed include Himalayan blackberry, reed canarygrass, and all listed noxious weeds. Non-native invasive plant species are well-established within a portion of Wetland A and the onsite wetland buffer and require an effective control strategy. To ensure non-native invasive species do not expand following the wetland buffer enhancement actions, non-native invasive plants within the entire mitigation area will be pretreated with a root-killing herbicide approved for use in aquatic sites (i.e. Rodeo) a minimum of two weeks prior to being cleared and grubbed from the enhancement area. A second application is strongly recommended. The pre-treatment with herbicide should occur prior to all planned enhancement actions, and spot treatment of surviving non-native invasive vegetation should be performed again each fall prior to senescence for a minimum of five years. 1778.0001 Centennial Park 23 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 7.6 Maintenance & Monitoring Plan The conceptual maintenance and monitoring plan is described below in accordance with AMC 20.93.850. The Applicant is committed to compliance with the wetland buffer enhancement plan and overall success of the project. As such, the Applicant will continue to maintain the project, keeping the site free from of non-native invasive vegetation, trash, and yard waste. The wetland buffer enhancement plan will require continued monitoring and maintenance to ensure the actions are successful. Therefore, the project site will be monitored for a period of five years with formal inspections by a qualified Wetland Scientist. The site will be monitored for a minimum of five years with monitoring plans submitted for zero, one, two, three and five years. Closeout assessment will also be conducted in Year 5 to ensure the adequate enhancement areas were established. Monitoring will consist of percent cover measurements at permanent monitoring stations, walk- through surveys to identify invasive species presence and dead or dying enhancement plantings, photographs taken at fixed photo points, wildlife observations, and general qualitative habitat and stream function observations. To determine percent cover, observed vegetation will be identified and recorded by species and an estimate of areal cover of dominant species within each sampling plots. Circular sample plots, approximately 30 feet in diameter (706 square feet), are centered at each monitoring station. The sample plots encompass the specified wetland buffer areas and terminate at the observed wetland boundary. Trees and shrubs within each 30-foot diameter monitoring plot are then recorded to species and areal cover. Herbaceous vegetation is sampled from a 10-foot diameter (78.5 square feet) within each monitoring plot, established at the same location as the center of each tree and shrub sample plot. Herbaceous vegetation within each monitoring plot is then recorded to species and includes an estimate of percent areal cover. A list of observed tree, shrub, and herbaceous species including percent areal cover of each species and wetland indicator status is included within the monitoring report. Plant survivorship of planted stock will be estimate at as-built/time zero and for each monitoring year by counting the number of dead/dying and live planted stock in each monitoring plot. Percent survival will equate to the number plants alive divided by the total number plants counted, multiplied by 100. 7.7 Reporting Following each monitoring event, a monitoring report detailing the current ecological status of the wetland buffer enhancement actions, measurement of performance standards, and management recommendations will be prepared and submitted to the City within 90 days of each monitoring event to ensure full compliance with the wetland buffer enhancement plan, performance standards, and conditions of approval. 7.8 Contingency Plan If monitoring results indicate that performance standards are not being met, it may be necessary to implement all or part of the contingency plan. Careful attention to maintenance is essential in ensuring that problems do not arise. Should any portion of the site fail to meet the success criteria, a contingency plan will be developed and implemented with regulatory approval. Such plans are adaptive and should be prepared on a case-by-case basis to reflect the failed mitigation characteristics. 1778.0001 Centennial Park 24 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Contingency plans can include additional plant installation, erosion control, and plant substitutions including type, size, and location. Contingency/maintenance activities may include, but are not limited to: 1. Replacing plants lost to vandalism, drought, or disease, as necessary; 2. Replacing any plant species with a 20 percent or greater mortality rate after two growing seasons with the same species or native species of similar form and function; 3. Irrigating the mitigation areas only as necessary during dry weather if plants appear to be too dry, with a minimal quantity of water; 4. Reseeding and/or repair of wetland buffer areas as necessary if erosion or sedimentation occurs; 5. Spot treat non-native invasive plant species; and 6. Removing all trash or undesirable debris from the stream and buffer areas as necessary. 1778.0001 Centennial Park 25 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 8. Closure The findings and conclusions documented in this report have been prepared for specific application to this project. They have been developed in a manner consistent with that level of care and skill normally exercised by members of the environmental science profession currently practicing under similar conditions in the area. Our work was also performed in accordance with the terms and conditions set forth in our proposal. The conclusions and recommendations presented in this report are professional opinions based on an interpretation of information currently available to us and are made within the operation scope, budget, and schedule of this project. No warranty, expressed or implied, is made. In addition, changes in government codes, regulations, or laws may occur. Due to such changes, our observations and conclusions applicable to this project may need to be revised wholly or in part. All wetland boundaries identified by SVC are based on conditions present at the time of the site inspection and considered preliminary until the flagged wetland boundaries are validated by the jurisdictional agencies. Validation of the wetland boundaries by the regulating agency provides a certification, usually written, that the wetland boundaries verified are the boundaries that will be regulated by the agencies until a specific date or until the regulations are modified. Only the regulating agencies can provide this certification. As wetlands are dynamic communities affected by both natural and human activities, changes in wetland boundaries may be expected; therefore, wetland delineations cannot remain valid for an indefinite period of time. Local agencies typically recognize the validity of wetland delineations for a period of five years after completion of a wetland delineation report. Development activities on a site five years after the completion of this wetland delineation report may require revision of the wetland delineation. In addition, changes in government codes, regulations, or laws may occur. Due of such changes, our observations and conclusions applicable to this site may need to be revised wholly or in part. 1778.0001 Centennial Park 26 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Chapter 9. References Arlington Municipal Code (AMC). 2018. Chapter 20.93 Environmentally Critical Areas - https://library.municode.com/wa/arlington/codes/code_of_ordinances?nodeId=TIT20ZO_C H20.93ENCRAR. Current through October 16, 2018. Brinson, M. M. 1993. A hydrogeomorphic classification for wetlands, Technical Report WRP-DE-4. U.S. Army Corps of Engineer Waterways Experiment Station. Vicksburg, MS. Cowardin, L.M., V. Carter, F. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Fish & Wildlife Service. Washington D.C. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Granger, T., T. Hruby, A. McMillan, D. Peters, J. Rubey, D. Sheldon, S. Stanley, and E. Stockdale. 2005. Wetlands in Washington State - Volume 2: Guidance for Protecting and Managing Wetlands. Washington State Department of Ecology. Publication #05-06-008. Olympia, Washington. April, 2005. Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Hruby, T. 2014. Washington State Wetland Rating System for Western Washington â€“ Revised. Washington State Department of Ecology Publication # 14-06-29. Debose A., and Klungland, M.W. 1983. Soil Survey of Snohomish County Area, Washington. United States Department of Agriculture, Soil Conservation Service in cooperation with Washington State Department of Natural Resources, and Washington State University, Agriculture Research Center. Washington, D.C. Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X Munsellïƒ¢ Color, 2000. Munsellïƒ¢ soil color charts. New Windsor, New York. Munsellïƒ¢ Color, 2000. Munsellïƒ¢ Soil Color Charts. New Windsor, New York. Nationwide Environmental Title Research. 2019. Historic Aerials by NETROnline. Website: https://www.historicaerials.com/viewer Natural Resources Conservation Service (NRCS). 1995. Hydric Soils of Washington. U.S. Department of Agriculture. Washington D.C. Sheldon, D., T. Hruby, P. Johnson, K. Harper, A. McMillan, T. Granger, S. Stanley, and E. Stockdale. 2005. Wetlands in Washington State - Volume 1: A Synthesis of the Science. Washington State Department of Ecology. Publication #05-06-006. Olympia, Washington. March, 2005. 1778.0001 Centennial Park 27 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Shramek, Joe. 2017. Washington Department of Natural Resources. 2017 Protocol Stream Survey Process and Water Level and Streamflow Forecast memorandum. February 28, 2017. Website: https://www.dnr.wa.gov/publications/fp_wt_streamsurvey_20170228.pdf?vwlt7i. United States Army Corps of Engineers (USACE). 2008. Navigable Waters of the U.S. in Washington State. Revised December 31, 2008. Website: https://www.nws.usace.army.mil/Portals/27/docs/regulatory/permit%20guidebook/Navigable _Waters_of_the_US_in_WA_State.pdf USACE. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Ver 2.0), ed. J.S. Wakeley, Lichvar, R.W. and Noble, C.V. ERDC/EL TR- 10-3. Vicksburg, MSS: U.S. Army Engineer Research and Development Center. United States Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS). 2018. Field Indicators of Hydric Soils in the United States, Version 8.2. L.M. Vasilas, G.W. Hurt, and J.F. Berkowitz (eds.). USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils Washington Administrative Code (WAC). 2006. Section 222-16-030 and -031 â€“ Water Typing System. Website: https://app.leg.wa.gov/WAC/default.aspx?cite=222-16-030. Effective date December 16, 2006. Washington Administrative Code (WAC). 2006. Section 222-16-030 and -031 â€“ Water Typing System. Website: https://app.leg.wa.gov/WAC/default.aspx?cite=222-16-030. Effective date December 16, 2006. Washington Department of Transportation (WSDOT). 2016. WSDOT USFWS No Effect Project Form. Submitted March 3, 2016. WSDOT. 2016. WSDOT NOAA Short Project Form. Submitted March 3, 2016. Washington Department of Natural Resources (DNR). 2002. Forest Practice Board Manual, Section 13 â€“ Guidelines for Determining Fish Use for the Purpose of Typing Waters. DNR. 2018. Forest Practices Water Typing. Website: https://www.dnr.wa.gov/forest-practices-water- typing. 1778.0001 Centennial Park 28 Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix A â€” Methods and Tools Table A-1. Methods and tools used to prepare the report. Parameter Method or Tool Website Reference Wetland USACE 1987 http://el.erdc.usace.army.mi Environmental Laboratory. 1987. Corps of Delineation Wetland l/elpubs/pdf/wlman87.pdf Engineers Wetlands Delineation Manual. Delineation Technical Report Y-87-1, US Army Engineer Manual Waterways Experiment Station, Vicksburg, Mississippi. Regional http://www.usace.army.mil U.S. Army Corps of Engineers. 2010. Supplement to the /CECW/Documents/cecw Regional Supplement to the Corps of Engineers Core of Engineers o/reg/west_mt_finalsupp.p Wetland Delineation Manual: Western Wetland df Mountains, Valleys, and Coast Region (Version Delineation 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Manual: Western Noble. ERDC/EL TR-10-3. Vicksburg, MS: Mountains, U.S. Army Engineer Research and Valleys, and Coast Development Center. Region (Version 2.0) Wetland USFWS / http://www.fws.gov/wetlan Cowardin, L. M., V. Carter, F. C. Golet, E. T. Classification Cowardin ds/Documents/Classificatio LaRoe. 1979. Classification of wetlands and Classification n-of-Wetlands-and- deepwater habitats of the United States. System Deepwater-Habitats-of-the- Government Printing Office, Washington, D.C. United-States.pdf https://www.fgdc.gov/stan Federal Geographic Data Committee. 2013. dards/projects/wetlands/nv Classification of Wetlands and Deepwater cs-2013 Habitats of the United States. FGDC-STD-004- 2013. Second Edition. Wetlands Subcommittee, Federal Geographic Data Committee and U.S. Fish and Wildlife Service, Washington, DC. Hydrogeomorphic http://el.erdc.usace.army.mi Brinson, M. M. (1993). â€œA hydrogeomorphic Classification l/wetlands/pdfs/wrpde4.pd classification for wetlands,â€ Technical Report (HGM) System f WRP-DE-4, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. Wetland Washington State https://fortress.wa.gov/ecy Hruby, T. (2014). Washington State Wetland Rating Wetland Rating /publications/documents/1 Rating System for Western Washington: 2014 Update. System 406029.pdf (Publication #14-06-029). Olympia, WA: Washington Department of Ecology. 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Parameter Method or Tool Website Reference Wetland 2016 National Lichvar, R.W., D.L. Banks, W.N. Kirchner, and Indicator Wetland Plant List N.C. Melvin. 2016. The National Wetland Plant Status List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X https://www.fws.gov/wetla nds/documents/National- Wetland-Plant-List-2016- Wetland-Ratings.pdf Stream Department of http://www.stage.dnr.wa.go Washington Administrative Code (WAC) 222- Classification Natural Resources v/forestpractices/watertypi 16-030. DNR Water typing system. (DNR) Water ng/ Typing System Stream Determining the https://fortress.wa.gov/ecy Anderson, P.S., S. Meyer, P. Olson, and E. Delineation OHW /publications/documents/1 Stockdale. 2016. Determining the Ordinary 606029.pdf High Water Mark for Shoreline Management Act Compliance in Washington State. Publication No. 16-06-029. Final Review Draft. Shorelands and Environmental Assistance Program, Washington State Department of Ecology. Olympia, Washington. Plant Names USDA Plant http://plants.usda.gov/ Website Database 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Parameter Method or Tool Website Reference Flora of the Pacific http://www.washington.ed Hitchcock, C.L. and A. Cronquist. 1973. Flora Northwest u/uwpress/search/books/ of the Pacific Northwest. University of HITFLC.html Washington Press. Seattle, Washington. Soils Data NRCS Soil Survey http://websoilsurvey.nrcs.u Website GIS data based upon: sda.gov/app/ Debose A., and Klungland, M.W. 1983. Soil Survey of Snohomish County Area, Washington. United States Department of Agriculture, Soil Conservation Service in cooperation with Washington State Department of Natural Resources, and Washington State University, Agriculture Research Center. Washington, D.C. Snohomish http://www.wa.nrcs.usda.g Natural Resources Conservation Service. County Hydric ov/technical/soils/hydric_li 1983. Hydric Soils List: Snohomish County, Soils List sts/hydsoil-wa-653.pdf Washington. U.S. Department of Agriculture. Washington D.C. Soil Color Charts Munsellïƒ¢ Color. 2000. Munsellïƒ¢ Soil Color Charts. New Windsor, New York. Field Indicators of United States Department of Agriculture, Hydric Soils in the Natural Resources Conservation Service. 2018. https://www.nrcs.usda.gov U.S. Version 8.2 Field Indicators of Hydric Soils in the United /Internet/FSE_DOCUME States, Version 8.2. L.M. Vasilas, G.W. Hurt, NTS/nrcs142p2_053171.pd and J.F. Berkowitz (eds.). USDA, NRCS, in f cooperation with the National Technical Committee for Hydric Soils Threatened Washington http://data- Washington Natural Heritage Program and Natural Heritage wadnr.opendata.arcgis.com/ (Data published 07/19/17). Endangered, Endangered Program datasets/wnhp-current- threatened, and sensitive plants of Washington. Species element-occurrences Washington State Department of Natural Resources, Washington Natural Heritage Program, Olympia, WA Washington http://wdfw.wa.gov/hab/p Priority Habitats and Species (PHS) Priority Habitats hspage.htm Program (Data requested 06/13/18). Map of and Species priority habitats and species in project vicinity. Washington Department of Fish and Wildlife (WDFW). NOAA fisheries http://www.nwr.noaa.gov/ Website species list and ESA-Salmon- maps Listings/Salmon- Populations/Index.cfm and http://www.nmfs.noaa.gov /pr/species/ USFWS species http://www.fws.gov/westw Website lists by County afwo/se/SE_List/endanger ed_Species.asp Species of WDFW GIS Data http://wdfw.wa.gov/mappi Website Local ng/salmonscape/ Importance 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Parameter Method or Tool Website Reference Arlington https://library.municode.co AMC Chapter 20.93 Environmentally Critical Municipal Code m/wa/arlington/codes/cod Areas Report e_of_ordinances?nodeId=T Preparation IT20ZO_CH20.93ENCRA R Historic NETROnline https://www.historicaerials. Website Aerials com/viewer 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B â€” Background Information This appendix includes a USGS Topographic Map (B1); USFWS NWI map (B2); NRCS soil survey map (B3); Snohomish County wetland inventory (B4); WDFW PHS map (B5); WDFW SalmonScape map (B6); DNR stream typing map (B7); 1954 Historic Aerial Photograph (B8); and 1969 Historic Aerial Photograph (B9). 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B1 â€“ USGS Topographic Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B2 â€“ USFWS NWI Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B3 â€“ NRCS Soil Survey Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B4 â€“ Snohomish County Wetland Inventory Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B5 â€“ WDFW PHS Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B6 â€“ WDFW SalmonScape Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B7 â€“ DNR Steam Typing Map Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B8 â€“ 1954 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B9 â€“ 1969 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix B9 â€“ 1990 Historic Aerial Photograph Approximate Subject Property Location 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix C â€” Site Plans 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 CENTENNIAL PARK - EXISTING CONDITIONS PRELIMINARY INFORMATION ONLY Wetland Flag ! ! ! ! ! ! Drainage NOT FOR CONSTRUCTION &' Data Point Ã Ã Ã ` Ã Ã Ã ` Type F Stream SOUNDVIEW CONSULTANTS LLC ASSUMES Ã Ã Ã NO LIABILITY OR RESPONSIBILITY FOR Standard 40' Wetland BufferÃ Ã Ã Category IV Wetland CONSTRUCTION, IMPROVEMENTS, OR Delineated Wetland Edge Ã Ã Ã Site Boundary ESTIMATES BASED ON THIS PLAN SET Â¢ Estimated Wetland Edge Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã A-1Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !DP-3U! ! ! ! ! ! ! ! ! ! ! ! ! !Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! ! ! ! ! ! ! ! ! ! ! A-11 ' Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã !! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! & ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã A-2 ! A-10 Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! Wetland A Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! A-3 ! Category IV Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! A-9 ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! DP-4W Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! ! ' DP-6U Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã A-4 ! & Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! A-8' DP-5U ! & ! A-7 Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ' A-6! & ! A-5 ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã ! DP-7U! ' ! Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã & ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! DP-2U &' DP-1U &' ` ` Relocated ` ` Type F Stream ` ` (Estimated) ` ` ` ` ` ` ` ` ` ` ` ` ` ` 0 55 110 220 Feet ` ` ` ` ` ` ` ` ` ` ` ` ` DATE: 10/30/2018 ` ` ` ` ` ` CENTENNIAL PARK ` JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions ` 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 110 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: ` 31052300300800 FIGURE NO. www.soundviewconsultants.com 1 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` CENTENNIAL PARK - EXISTING CONDITIONS HIGHLAND VIEW DR. HIGHLAND VIEW DR. PROPERTY BOUNDARY DP3U DP6U DP4W SOURCES: DP5U DP7U WETLAND A CATEGORY IV ~21,823 SF DP11U STD. 40' BUFFER 67TH AVE. N.E. DP10U DP2U 67TH AVE NE PROPERTY BOUNDARY APROX. LOCATION OF 150' BUFFER OF RELICT STREAM CHANNEL DP1U RELICT STREAM CHANNEL FROM SURVEY DP8U CULVERT V DP9U V APROX. LOCATION OF V V V V RELOCATED STREAM RANGE 05E, W.M. V OF SECTION 23, TOWNSHIP 31N, STANDARD 100' BUFFER 1 4 BLOCKED V V V CENTENNIAL PARK 172ND ST NE CULVERT ARLINGTON, WASHINGTON 98223 172ND ST. N.E. V APROX. LOCATION OF RELOCATED PRELIMINARY 67TH AVE NE & 172ND ST NE/HWY 531 THE SW V V STREAM CHANNEL (OFF-SITE) INFORMATION ONLY V LIKELY LOCATION OF TYPE F WITH 100' BUFFER DATE: 6/27/2019 V RELOCATED STREAM NOT FOR CONSTRUCTION V V V V JOB: 1778.0001 V INTERRUPTED BUFFER V SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS V NO LIABILITY OR RESPONSIBILITY FOR V CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 1 OF 4 CENTENNIAL PARK - PROPOSED PROJECT HIGHLAND VIEW DR. HIGHLAND VIEW DR. BUILDING E.2 PROPERTY BOUNDARY6' PERIMETER 6' PERIMETER FENCING FENCING OPEN SPACE C 20' - 5" BUILDING D REAR SETBACK 30' - 1" REAR SETBACK WETLAND A CATEGORY IV BUILDINGS B, C BUILDING E SPLIT RAIL SPLIT RAIL COMM. AREA BUILDINGS B, C FENCING FENCING BLDG & D PROVIDED WITH LOFT RECREATIONAL PROPOSED VAULT Centennial Trail AREA B LOCATION. CONFIRM BUILDING K LAYOUT W/PUD POOL SOURCES: PARKING BACK ALLEY PARKING BACK ALLEY PARKING BACK ALLEY J SEC 40FT WETLAND BUFFER ZONE MAIN 25% OF BUFFER ZONE (18,948SF) TO SEC ENTRY/EXIT RESIDENTIAL FRONTAGE STREET COUNT TOWARDS OPEN SPACE PER CARPORTS SWITCH SPLIT RAIL AMC 20.52.030 (B)(6) FENCING 4,737SF OPEN SPACE E DOG RUN MINI-PARK C WETLAND BUFFER ENHANCEMENT BUILDING C J PLANTING ~18,632 SF (SEE PLANT OPEN SPACE F RESIDENTIAL FRONTAGE STREET PLAYGROUND BUILDING L SCHEDULE ON NEXT SHEET) EQUIPMENT BUILDING F SHELTER AND BUILDINGS B, C & TRELLISES D PROVIDED WITH STRUCTURES LOFT UNITS AT WETLAND A LEV 1 FOR FUTURE RETAIL OPEN CONVERSION SPACE A J OPEN COMMUNITY GREEN CATEGORY IV SPACE B BUILDING H MINI-PARK A SEC Centennial Trail ~21,823 SF WITH BUILDING J PARKING BACK ALLEY RESIDENTIAL FRONTAGE STREET STD. 40' BUFFER BUILDING B67TH AVE. N.E. BUILDING M BUILDING I BUILDING G PARKING BACK ALLEY SEC SEC J APROX. LOCATION OF 150' BUFFER 67TH AVE NE TRASH/ MONUMENT SIGN RELICT STREAM RECYCLING OF RELICT STREAM CHANNEL CHANNEL, 150' CL RESIDENTIAL FRONTAGE STREET PROPERTY BOUNDARY SECONDARY BUFFER ENTRY/EXIT J J SEC BICYCLE SURVEYED LOCATION OF RACK J 25% OF BUFFER ZONE (73,093SF) TO RELICT STREAM CHANNEL BUILDING A SEC COUNT TOWARDS OPEN SPACE PER AMC 20.52.030 (B)(6) 18,273SF OPEN SPACE E APROX. LOCATION OF 100' BUFFER BUILDING N OF RELOCATED STREAM CHANNEL BUILDING A DASHED GREY PHASE 2 LINES INDICATE Centennial Trail BUILDING O PHASE 2 SITE DEVELOPMENT AND BUILDINGS SWITCH POTENTIAL LOCATION OF PHASE 2 PHASE 2 V BUILDING P BUILDING S V RELOCATED STREAM V V V PHASE 2 V SECONDARY RANGE 05E, W.M. ENTRY/EXIT V INTERRUPTED BUFFER OF SECTION 23, TOWNSHIP 31N, 4 1 V APROX. LOCATION OF RELOCATED RELICT STREAM CHANNEL; V V CENTENNIAL PARK 172ND ST NE FISH PRESENCE UNLIKELY ARLINGTON, WASHINGTON 98223 172ND ST. N.E. V STREAM CHANNEL PRELIMINARY 67TH AVE NE & 172ND ST NE/HWY 531 THE SW V V INFORMATION ONLY V DATE: 6/27/2019 V NOT FOR CONSTRUCTION V V V V JOB: 1778.0001 V V SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS V NO LIABILITY OR RESPONSIBILITY FOR V CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 2 OF 4 CENTENNIAL PARK - NATIVE PLANT SCHEDULE TREE PLANTING DETAIL SOURCES: RANGE 05E, W.M. OF SECTION 23, TOWNSHIP 31N, 4 1 CENTENNIAL PARK PRELIMINARY ARLINGTON, WASHINGTON 98223 67TH AVE NE & 172ND ST NE/HWY 531 THE SW INFORMATION ONLY DATE: 6/27/2019 NOT FOR CONSTRUCTION JOB: 1778.0001 SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS NO LIABILITY OR RESPONSIBILITY FOR CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 3 OF 4 CENTENNIAL PARK - SITE DETAILS TREE PLANTING DETAIL SHRUB PLANTING DETAIL NOT TO SCALE NOT TO SCALE LOCATOR LATH (IF SPECIFIED) LOCATOR LATH (IF SPECIFIED) SET TOP OF ROOT MASS / ROOT BALL FLUSH SET TOP OF ROOT MASS / ROOT BALL FLUSH WITH FINISH GRADE OR SLIGHTLY ABOVE WITH FINISH GRADE OR SLIGHTLY ABOVE 2 to 3 INCH LAYER OF MULCH - KEEP MULCH 2 to 3 INCH LAYER OF MULCH - KEEP MULCH MIN. 3" AWAY FROM TRUNK OF TREE MIN. 3" AWAY FROM TRUNK OF SHRUB NOTES: NOTES: 1. PLANT SHRUBS OF THE SAME SPECIES IN 1. PLANT TREES AS INDICATED ON PLAN. AVOID GROUPS OF 3 to 9 AS APPROPRIATE, OR AS SHOWN INSTALLING PLANTS IN STRAIGHT LINES. SOURCES: ON PLAN. AVOID INSTALLING PLANTS IN STRAIGHT 2. EXCAVATE PIT TO FULL DEPTH OF ROOT MASS LINES TO ACHIEVE A NATURAL-LOOKING LAYOUT. AND 2 X ROOT MASS DIAMETER. SPREAD ROOTS TO 2. EXCAVATE PIT TO FULL DEPTH OF ROOT MASS FULL WIDTH OF CANOPY. SCARIFY SIDES OF PIT. AND 2 X ROOT MASS DIAMETER. SPREAD ROOTS TO 3. MIDWAY THROUGH PLANTING ADD AGROFORM FULL WIDTH OF CANOPY. SCARIFY SIDES OF PIT. TABLET AND WATER THOROUGHLY. 3. MIDWAY THROUGH PLANTING ADD AGROFORM 4. BACKFILL TO BE COMPACTED USING WATER ONLY. TABLET AND WATER THOROUGHLY. 5. WATER IMMEDIATELY AFTER INSTALLATION. 4. BACKFILL TO BE COMPACTED USING WATER ONLY. 5. WATER IMMEDIATELY AFTER INSTALLATION. UNDISTURBED OR UNDISTURBED OR COMPACTED SUBGRADE COMPACTED SUBGRADE LIVE STAKE PLANTING DETAIL NOT TO SCALE NOTES: 1. LIVE STAKES TO BE 1 TO 2 INCH DIAMETER 24 TO 32 INCHES LENGTH. 2. USE 1/2 INCH DIAMETER REBAR OR ROCK BAR TO MAKE PILOT HOLE. 3. INSTALL LIVE STAKES TAPER END DOWN WITH BUDS POINTED UP. 4. MINUMUM TWO BUDS ABOVE GRADE. 5. SET LIVE STAKES WITH DEAD-BLOW HAMMER. 6. WATER IMMEDIATELY AFTER INSTALLATION. STORAGE OF LIVE STAKES ALL WOODY PLANT CUTTINGS COLLECTED MORE THAN 12 HR PRIOR TO INSTALLATION, MUST BE CAREFULLY BOUND, SECURED, AND STORED OUT OF DIRECT SUNLIGHT AND SUBMERGED IN CLEAN FRESH WATER FOR A PERIOD OF UP TO TWO WEEKS. RANGE 05E, W.M. OUTDOOR TEMPERATURES MUST BE LESS OF SECTION 23, TOWNSHIP 31N,4 THAN 50 DEGREES F AND TEMPERATURE 1 INDOORS AND IN STORAGE CONTAINERS CENTENNIAL PARK MUST BE BETWEEN 34 AND 50 DEGREES F. PRELIMINARY ARLINGTON, WASHINGTON 98223 67TH AVE NE & 172ND ST NE/HWY 531 THE SW INFORMATION ONLY IF THE LIVE STAKES CANNOT BE INSTALLED DURING THE DORMANT SEASON, CUT DATE: 6/27/2019 DURING THE DORMANT SEASON AND HOLD NOT FOR CONSTRUCTION 70-80 % OF STAKE INSTALLED BELOW GRADE JOB: 1778.0001 IN COLD STORAGE AT TEMPERATURES BETWEEN 33 AND 39 DEGREES F FOR UP TO SOUNDVIEW CONSULTANTS LLC ASSUMES BY: DS NO LIABILITY OR RESPONSIBILITY FOR 2 MONTHS. CONSTRUCTION, IMPROVEMENTS, OR SCALE: SEE GRAPHIC ESTIMATES BASED ON THIS PLAN SET SHEET 4 OF 4 Appendix D â€” Data Forms 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-1U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 2 Subregion (LRR): A2 Lat: 48.15232781 Long: -122.13997093 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met; only hydrophytic vegetation. Data collected in the southwest corner of the site. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 2 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 2 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 95 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 95 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 5 Remarks: Hydrophytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-1U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 13 10YR 2/1 100 - - - - SiLo Gravelly silt loam 13 - 18 10YR 2/2 95 10YR 3/6 5 CS M SaLo Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-2U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): None Slope (%): 0 Subregion (LRR): A2 Lat: 48.15270064 Long: -122.13943818 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in the western portion of the site in a field. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 3 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 67% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 1 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 1 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Plantago lanceolata 60 Yes FACU Column Totals: (A) (B) 2. Agrostis capillaris 30 Yes FAC 3. Ranunculus repens 10 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydrophytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-2U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 15 10YR 2/2 100 - - - - SaLo Gravelly sandy loam 15 - 17 10YR 2/2 95 10YR 3/6 5 CS M SaLo Gravelly sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. Roots observed from 0 to 6 inches. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrology criteria met. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-3U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Convex Slope (%): 15 Subregion (LRR): A2 Lat: 48.15356159 Long: -122.13967423 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in the northern portion of the site in a drainage. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 1 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-3U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 8 10YR 3/1 100 - - - - SiLo Silt loam 8 - 18 10YR 3/2 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/18 Applicant/Owner: Williams Investment State: WA Sampling Point: DP-4W Investigator(s): Matthew Murphy, Erin Harker Section, Township, Range: 23 / 31N / 5E Landform (hillslope, terrace, etc.): Swale Local relief (concave, convex, none): Concave Slope (%): 0 Subregion (LRR): A2 Lat: 48.153484 Long: -122.13886242 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: All three wetland criteria met. Data collected in northern portion of the site in Wetland A. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 0 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 0% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydrophytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-4W Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-16 10YR 2/1 100 - - - - SiLo Silt loam 16-18 10YR 2/1 100 - - - - Organic Muck 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: Hydric soils met through indicator A4. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 14 Saturation Present? Yes No Depth (inches): 11 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic criteria met through primary indicator A3. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-5U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 2 Subregion (LRR): A2 Lat: 48.15338214 Long: -122.13902839 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected west of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 1 (A) 2. Total Number of Dominant 3. Species Across All Strata: 1 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-5U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 11 10YR 2/1 100 - - - - SaLo Sandy loam 11 - 16 10YR 3/1 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-6U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Hillslope Local relief (concave, convex, none): Convex Slope (%): 20 Subregion (LRR): A2 Lat: 48.1535363 Long: -122.13832539 Datum: WGS 84 Soil Map Unit Name: Everett gravelly sandy loam, 8 to 15 percent slopes NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected east of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 20 Yes FAC That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 20 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-6U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 16 10YR 2/1 100 - - - - LoSa Loamy sand 16 - 18 10YR 3/1 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 10/12/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-7U Investigator(s): Erin Harker Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.15328337 Long: -122.13887554 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met; only hydrophytic vegetation. Data collected southwest of Wetland A boundary. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. That Are OBL, FACW, or FAC: 2 (A) 2. Total Number of Dominant 3. Species Across All Strata: 2 (B) 4. Percent of Dominant Species 0 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 10 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 10 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 100 Yes FACW Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 100 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 0 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-7U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 11 10YR 2/1 100 - - - - SiLo Silt loam 11 - 16 10YR 3/2 100 - - - - LoSa Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 17 Saturation Present? Yes No Depth (inches): 16 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic criteria met; only one secondary indicator (D5) was met indirectly. Groundwater table is present but begins too deep to be meet A2 or A3. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 11/4/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-8U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152198 Long: -122.13838064 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria omet; only hydrophytic vegetation and hydrology. Data collected north of the relict stream channel. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Thuja plicata 20 Yes FAC That Are OBL, FACW, or FAC: 5 (A) 2. Alnus rubra 15 Yes FAC Total Number of Dominant 3. Species Across All Strata: 5 (B) 4. Percent of Dominant Species 35 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 40 Yes FAC Prevalence Index worksheet: 2. Sambucus racemosa 10 No FACU Total % Cover of: Multiply by: 3. Lonicera involucrata 10 No FAC OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 60 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 40 Yes FACW Column Totals: (A) (B) 2. Urtica dioica 15 Yes FAC 3. Equisetum arvense 10 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 65 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 35 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-8U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 6 10YR 3/2 100 - - - - SiLo Silt loam 6-13 10YR 3/2 100 - - - - SiLo Gravelly silt loam 13-15 5Y 4/1 98 10YR 3/6 2 C M SiLo Silt loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 10 Saturation Present? Yes No Depth (inches): 8 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrology criteria met through primary indicators A2 and A3; however, 3.24-inches of precipitation was recorded 2 weeks prior to the site investigation which likely caused areas a false positive hydrology indicator US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 11/4/2018 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-9U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152120 Long: -122.13842892 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected north of the relict stream channel. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 40 Yes FAC That Are OBL, FACW, or FAC: 4 (A) 2. Thuja plicata 15 Yes FAC Total Number of Dominant 3. Species Across All Strata: 5 (B) 4. Percent of Dominant Species 55 = Total Cover That Are OBL, FACW, or FAC: 80% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 30 Yes FAC Prevalence Index worksheet: 2. Rubus spectabilis 15 Yes FAC Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 45 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Moss sp. 5 NI Column Totals: (A) (B) 2. 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 5 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hedera helix 10 Yes FACU Hydrophytic 2. Vegetation 10 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 95 Remarks: Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-9U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 14 10YR 3/1 100 - - - - SaLo Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 14 Saturation Present? Yes No Depth (inches): 13 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Wetland hydrology not met. Water table too deep to meet A2 or A3, and 3.24-inches of precipitation was recorded 2 weeks prior to the site investigation. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 5/7/2019 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-10U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.152830 Long: -122.13840503 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in eastern-central portion of the property in a forested area. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 70 Yes FAC That Are OBL, FACW, or FAC: 3 (A) 2. Total Number of Dominant 3. Species Across All Strata: 3 (B) 4. Percent of Dominant Species 70 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Rubus armeniacus 10 Yes FAC Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 10 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Phalaris arundinacea 80 Yes FACW Column Totals: (A) (B) 2. Equisetum arvense 20 No FAC 3. Juncus sp.* 3 No FAC Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 103 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum -3 Remarks: Hydropytic vegetation criteria met through dominance test. *Could not be identified to species level, assumed FAC for scoring purposes. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-10U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 13 10YR 2/2 100 - - - - SaLo Gravelly sandy loam 13-16 10YR 3/2 60 - - - - SaLo Sandy loam, dual matrix 10YR 2/2 40 - - - - SaLo Sandy loam, dual matrix 16-20 10YR 2/1 100 - - - - SiLo Silt loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): 18 Saturation Present? Yes No Depth (inches): 14 Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Wetland hydrology not met; saturation and water table too deep to meet A2 or A3. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 WETLAND DETERMINATION DATA FORM â€“ Western Mountains, Valleys, and Coast Region Project/Site: 1778.0001 - Centennial Park City/County: Arlington / Snohomish Sampling Date: 5/7/2019 Applicant/Owner: Williams Investments State: WA Sampling Point: DP-11U Investigator(s): Jon Pickett Section, Township, Range: 23 / 31N / 05E Landform (hillslope, terrace, etc.): Valley Floor Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): A2 Lat: 48.153032 Long: -122.13839143 Datum: WGS 84 Soil Map Unit Name: Norma loam NWI classification: N/A Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are â€œNormal Circumstancesâ€ present? Yes No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS â€“ Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydric Soil Present? Yes No within a Wetland? Yes No Wetland Hydrology Present? Yes No Remarks: Not all three wetland criteria met, only hydrophytic vegetation. Data collected in eastern-central portion of the property in a forested area. VEGETATION â€“ Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30 ft) % Cover Species? Status Number of Dominant Species 1. Alnus rubra 75 Yes FAC That Are OBL, FACW, or FAC: 3 (A) 2. Total Number of Dominant 3. Species Across All Strata: 3 (B) 4. Percent of Dominant Species 75 = Total Cover That Are OBL, FACW, or FAC: 100% (A/B) Sapling/Shrub Stratum (Plot size: 15 ft) 1. Prevalence Index worksheet: 2. Total % Cover of: Multiply by: 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = 0 = Total Cover FACU species x 4 = Herb Stratum (Plot size: 5 ft) UPL species x 5 = 1. Equisetum arvense 30 Yes FAC Column Totals: (A) (B) 2. Phalaris arundinacea 25 Yes FACW 3. Prevalence Index = B/A = 4. Hydrophytic Vegetation Indicators: 5. Rapid Test for Hydrophytic Vegetation 6. Dominance Test is >50% 7. Prevalence Index is â‰¤3.01 8. Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 9. Wetland Non-Vascular Plants1 10. Problematic Hydrophytic Vegetation1 (Explain) 11. 55 1Indicators of hydric soil and wetland hydrology must = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 30 ft) 1. Hydrophytic 2. Vegetation 0 = Total Cover Present? Yes No % Bare Ground in Herb Stratum 40 Remarks: Mosses 5% of herbaceous stratum. Hydropytic vegetation criteria met through dominance test. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 SOIL Sampling Point: DP-11U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0 - 8 10YR 2/2 100 - - - - SaLo Sandy loam 8-15 10YR 4/4 60 - - - - SaLo Gravelly sandy loam, dual matrix 10YR 3/2 40 - - - - SaLo Gravelly sandy loam, dual matrix 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: Histosol (A1) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Red Parent Material (TF2) Black Histic (A3) Loamy Mucky Mineral (F1) (except MLRA 1) Very Shallow Dark Surface (TF12) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Other (Explain in Remarks) Depleted Below Dark Surface (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) wetland hydrology must be present, Sandy Gleyed Matrix (S4) Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type:________________________________None Depth (inches):________________________-- Hydric Soil Present? Yes No Remarks: No hydric soil indicators met. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Water-Stained Leaves (B9) (except MLRA Water-Stained Leaves (B9) (MLRA 1, 2, High Water Table (A2) 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Salt Crust (B11) Drainage Patterns (B10) Water Marks (B1) Aquatic Invertebrates (B13) Dry-Season Water Table (C2) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Saturation Visible on Aerial Imagery (C9) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Geomorphic Position (D2) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Shallow Aquitard (D3) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) FAC-Neutral Test (D5) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Raised Ant Mounds (D6) (LRR A) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Frost-Heave Hummocks (D7) Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes No Depth (inches): None Water Table Present? Yes No Depth (inches): None Saturation Present? Yes No Depth (inches): None Wetland Hydrology Present? Yes No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Wetland hydrology not met. US Army Corps of Engineers Western Mountains, Valleys, and Coast â€“ Version 2.0 Appendix E â€” Wetland Rating Forms 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Wetland name or number ______ A RATING SUMMARY â€“ Western Washington Name of wetland (or ID #): _________________________________ Date of site visit: _____ A 10/12/18 Rated by____________________________ Trained by Ecology?__ Yes ___No Date of training______ Erin Harker, Jon Pickett âœ” HGM Class used for rating_________________ Depressional Wetland has multiple HGM classes?___Y ____Nâœ” NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map ______________________________________ OVERALL WETLAND CATEGORY ____ IV (based on functions___ or special characteristics___)âœ” 1. Category of wetland based on FUNCTIONS _______Category I â€“ Total score = 23 - 27 Score for each _______Category II â€“ Total score = 20 - 22 function based on three _______Category III â€“ Total score = 16 - 19 ratings _______Category IV â€“ Total score = 9 - 15 (order of ratings is not important) FUNCTION Improving Hydrologic Habitat Water Quality 9 = H,H,H Circle the appropriate ratings 8 = H,H,M Site Potential L L L 7 = H,H,L Landscape Potential L L L 7 = H,M,M Value H L L TOTAL 6 = H,M,L 6 = M,M,M Score Based on 5 3 3 11 5 = H,L,L Ratings 5 = M,M,L 4 = M,L,L 3 = L,L,L 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above N/A Wetland Rating System for Western WA: 2014 Update 1 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 Hydroperiods D 1.4, H 1.2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 Map of the contributing basin D 4.3, D 5.3 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Ponded depressions R 1.1 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 Width of unit vs. width of stream (can be added to another figure) R 4.1 Map of the contributing basin R 2.2, R 2.3, R 5.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 Plant cover of dense, rigid trees, shrubs, and herbaceous plants S 4.1 (can be added to figure above) Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge - including H 2.1, H 2.2, H 2.3 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 Wetland Rating System for Western WA: 2014 Update 2 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A HGM Classification of Wetlands in Western Washington For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides except during floods? NO â€“ go to 2 YES â€“ the wetland class is Tidal Fringe â€“ go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO â€“ Saltwater Tidal Fringe (Estuarine) YES â€“ Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. NO â€“ go to 3 YES â€“ The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ___The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ___At least 30% of the open water area is deeper than 6.6 ft (2 m). NO â€“ go to 4 YES â€“ The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ____The wetland is on a slope (slope can be very gradual), ____The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ____The water leaves the wetland without being impounded. NO â€“ go to 5 YES â€“ The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ____The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ____The overbank flooding occurs at least once every 2 years. Wetland Rating System for Western WA: 2014 Update 3 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A NO â€“ go to 6 YES â€“ The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. NO â€“ go to 7 YES â€“ The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. NO â€“ go to 8 YES â€“ The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit HGM class to being rated use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream Depressional within boundary of depression Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other Treat as class of freshwater wetland ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating System for Western WA: 2014 Update 4 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A DEPRESSIONAL AND FLATS WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality D 1.0. Does the site have the potential to improve water quality? D 1.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet). points = 3 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet. 1 points = 2 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 1 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch. points = 1 D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions).Yes = 4 No = 0 0 D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or Forested Cowardin classes): Wetland has persistent, ungrazed, plants > 95% of area points = 5 Wetland has persistent, ungrazed, plants > Â½ of area points = 3 3 Wetland has persistent, ungrazed plants > 1/ of area points = 1 10 Wetland has persistent, ungrazed plants <1/ of area points = 0 10 D 1.4. Characteristics of seasonal ponding or inundation: This is the area that is ponded for at least 2 months. See description in manual. Area seasonally ponded is > Â½ total area of wetland points = 4 0 Area seasonally ponded is > Â¼ total area of wetland points = 2 Area seasonally ponded is < Â¼ total area of wetland points = 0 Total for D 1 Add the points in the boxes above 4 Rating of Site Potential If score is: 12-16 = H 6-11 = M 0-5 = L Record the rating on the first page D 2.0. Does the landscape have the potential to support the water quality function of the site? D 2.1. Does the wetland unit receive stormwater discharges? Yes = 1 No = 0 0 D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 0 D 2.3. Are there septic systems within 250 ft of the wetland? Yes = 1 No = 0 0 D 2.4. Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1-D 2.3? 0 Source_______________ Yes = 1 No = 0 Total for D 2 Add the points in the boxes above 0 Rating of Landscape Potential If score is: 3 or 4 = H 1 or 2 = M 0 = L Record the rating on the first page D 3.0. Is the water quality improvement provided by the site valuable to society? D 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 1 303(d) list? Yes = 1 No = 0 D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list? Yes = 1 No = 0 1 D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer YES 2 if there is a TMDL for the basin in which the unit is found)? Yes = 2 No = 0 Total for D 3 Add the points in the boxes above 4 Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page NOTES and FIELD OBSERVATIONS: Wetland Rating System for Western WA: 2014 Update 5 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A DEPRESSIONAL AND FLATS WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation D 4.0. Does the site have the potential to reduce flooding and erosion? D 4.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression with no surface water leaving it (no outlet) points = 4 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outletpoints = 2 0 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0 D 4.2. Depth of storage during wet periods: Estimate the height of ponding above the bottom of the outlet. For wetlands with no outlet, measure from the surface of permanent water or if dry, the deepest part. Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 0 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 The wetland is a â€œheadwaterâ€ wetland points = 3 Wetland is flat but has small depressions on the surface that trap water points = 1 Marks of ponding less than 0.5 ft (6 in) points = 0 D 4.3. Contribution of the wetland to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of the unit points = 5 3 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 times the area of the unit points = 0 Entire wetland is in the Flats class points = 5 Total for D 4 Add the points in the boxes above 3 Rating of Site Potential If score is: 12-16 = H 6-11 = M 0-5 = L Record the rating on the first page D 5.0. Does the landscape have the potential to support hydrologic functions of the site? D 5.1. Does the wetland receive stormwater discharges? Yes = 1 No = 0 0 D 5.2. Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes = 1 No = 0 0 D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at 0 >1 residence/ac, urban, commercial, agriculture, etc.)? Yes = 1 No = 0 Total for D 5 Add the points in the boxes above 0 Rating of Landscape Potential If score is: 3 = H 1 or 2 = M 0 = L Record the rating on the first page D 6.0. Are the hydrologic functions provided by the site valuable to society? D 6.1. The unit is in a landscape that has flooding problems. Choose the description that best matches conditions around the wetland unit being rated. Do not add points. Choose the highest score if more than one condition is met. The wetland captures surface water that would otherwise flow down-gradient into areas where flooding has damaged human or natural resources (e.g., houses or salmon redds): ï‚· Flooding occurs in a sub-basin that is immediately down-gradient of unit. points = 2 ï‚· Surface flooding problems are in a sub-basin farther down-gradient. points = 1 0 Flooding from groundwater is an issue in the sub-basin. points = 1 The existing or potential outflow from the wetland is so constrained by human or natural conditions that the water stored by the wetland cannot reach areas that flood. Explain why __________________Wetland discharges into ditches and stormwater featurespoints = 0 There are no problems with flooding downstream of the wetland. points = 0 D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? 0 Yes = 2 No = 0 Total for D 6 Add the points in the boxes above 0 Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page Wetland Rating System for Western WA: 2014 Update 6 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - Indicators that site functions to provide important habitat H 1.0. Does the site have the potential to provide habitat? H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be combined for each class to meet the threshold of Â¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ____Aquatic bed 4 structures or more: points = 4 ____Emergent 3 structures: points = 2 ____Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points = 1 1 ____Forested (areas where trees have > 30% cover) 1 structure: points = 0 If the unit has a Forested class, check if: ____The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the Forested polygon H 1.2. Hydroperiods Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or Â¼ ac to count (see text for descriptions of hydroperiods). ____Permanently flooded or inundated 4 or more types present: points = 3 ____Seasonally flooded or inundated 3 types present: points = 2 ____Occasionally flooded or inundated 2 types present: points = 1 1 ____Saturated only 1 type present: points = 0 ____Permanently flowing stream or river in, or adjacent to, the wetland ____Seasonally flowing stream in, or adjacent to, the wetland ____Lake Fringe wetland 2 points ____Freshwater tidal wetland 2 points H 1.3. Richness of plant species Count the number of plant species in the wetland that cover at least 10 ft2. Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle 1 If you counted: > 19 species points = 2 5 - 19 species points = 1 < 5 species points = 0 H 1.4. Interspersion of habitats Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none. If you have four or more plant classes or three classes and open water, the rating is always high. 0 None = 0 points Low = 1 point Moderate = 2 points All three diagrams in this row are HIGH = 3points Wetland Rating System for Western WA: 2014 Update 13 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ____Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ____Standing snags (dbh > 4 in) within the wetland ____Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) 1 ____Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ____At least Â¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ____Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) Total for H 1 Add the points in the boxes above 4 Rating of Site Potential If score is: 15-18 = H 7-14 = M 0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: 0.88 % undisturbed habitat + [(% moderate and low intensity land uses) 3.10 /2] = _______%2.43 If total accessible habitat is: > 1/ (33.3%) of 1 km Polygon points = 3 3 0 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: 2.51 % undisturbed habitat + [(% moderate and low intensity land uses) 34.89 /2] = _______%19.955 Undisturbed habitat > 50% of Polygon points = 3 1 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) -2 â‰¤ 50% of 1 km Polygon is high intensity points = 0 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: 4-6 = H 1-3 = M < 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ï‚¾ It has 3 or more priority habitats within 100 m (see next page) ï‚¾ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ï‚¾ It is mapped as a location for an individual WDFW priority species 0 ï‚¾ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ï‚¾ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 Rating of Value If score is: 2 = H 1 = M 0 = L Record the rating on the first page Wetland Rating System for Western WA: 2014 Update 14 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ï‚¾ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ï‚¾ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ï‚¾ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ï‚¾ Old-growth/Mature forests: Old-growth west of Cascade crest â€“ Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests â€“ Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ï‚¾ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 â€“ see web link above). ï‚¾ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ï‚¾ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 â€“ see web link above). ï‚¾ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ï‚¾ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report â€“ see web link on previous page). ï‚¾ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ï‚¾ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ï‚¾ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ï‚¾ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland Rating System for Western WA: 2014 Update 15 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Category Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ï‚¾ The dominant water regime is tidal, ï‚¾ Vegetated, and ï‚¾ With a salinity greater than 0.5 ppt Yes â€“Go to SC 1.1 No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? Yes = Category I No - Go to SC 1.2 SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ï‚¾ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ï‚¾ At least Â¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ï‚¾ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Yes = Category I No = Category II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? Yes â€“ Go to SC 2.2 No â€“ Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? Yes = Category I No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf Yes â€“ Contact WNHP/WDNR and go to SC 2.4 No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? Yes = Category I No = Not a WHCV SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? Yes â€“ Go to SC 3.3 No â€“ Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? Yes â€“ Go to SC 3.3 No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? Yes = Is a Category I bog No â€“ Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? Yes = Is a Category I bog No = Is not a bog Wetland Rating System for Western WA: 2014 Update 16 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlifeâ€™s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ï‚¾ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ï‚¾ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). Yes = Category I No = Not a forested wetland for this section SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ï‚¾ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ï‚¾ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) Yes â€“ Go to SC 5.1 No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ï‚¾ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ï‚¾ At least Â¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ï‚¾ The wetland is larger than 1/ ac (4350 ft2) 10 Yes = Category I No = Category II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ï‚¾ Long Beach Peninsula: Lands west of SR 103 ï‚¾ Grayland-Westport: Lands west of SR 105 ï‚¾ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 Yes â€“ Go to SC 6.1 No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? Yes = Category I No â€“ Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? Yes = Category II No â€“ Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? Yes = Category III No = Category IV Category of wetland based on Special Characteristics If you answered No for all types, enter â€œNot Applicableâ€ on Summary Form Wetland Rating System for Western WA: 2014 Update 17 Rating Form â€“ Effective January 1, 2015 Wetland name or number ______ A This page left blank intentionally Wetland Rating System for Western WA: 2014 Update 18 Rating Form â€“ Effective January 1, 2015 Appendix F â€” Wetland Rating Maps 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 CENTENNIAL PARK - WETLAND RATING MAP Cowardin Map 330' Boundary Emergent Â¢ Scrub-Shrub Site Boundary 0 75 150 300 Feet DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 125 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 51 CENTENNIAL PARK - WETLAND RATING MAP Hydroperiod Map 150' Boundary Saturated Â¢ Seasonally Flooded Site Boundary 0 37.5 75 150 Feet DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 75 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 52 CENTENNIAL PARK - WETLAND RATING MAP Contributing Basin Map Ã Ã Ã Site Boundary Ã Ã Ã Ã Ã Ã Ã Wetland Ã Ã Ã Ã Contributing Basin Â¢ Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Old Stream Channel 0 125 250 500Feet (Relocated South of 172nd Street) D.4.0 D.4.3 Area of Contributing Basin (SF) 1,211,949 Area of Wetland A (SF) 23,130 Percent of Wetland A within Contributing Basin 1.908% D.5.0 D.5.3 Area of Contributing Basin 1,211,949 Area of Intensive Human Land Uses 30,464 Percent of Intensive Human Land Use within Contributing Basin 3% DATE:1/3/2019 CENTENNIAL PARK JOB:1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview ConsultantsLLC ARLINGTON, WA 98223 BY:DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 250 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 53 CENTENNIAL PARK - WETLAND RATING MAP Habitat Map Ã Ã Ã Ã Ã Ã Ã Ã Site Boundary Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Ã Wetland Ã Ã Ã Ã High Intensity Â¢ Moderate and Low Intensity Relatively Undisturbed Ã Ã Ã Ã Ã Ã Ã Ã 0 650 1,300 2,600 Feet H.2.0 Wetland A H.2.1 Abutting Undisturbed Habitat 0.88% Abutting Moderate & Low Intensity Land Uses 3.10% Accessible Habitat 2.43% H.2.2 Undisturbed Habitat 2.51% Moderate & Low Intensity Land Uses 34.89% Undisturbed Habitat in 1 KM Polygon 19.96% H.2.3 High Intensity Land Use in 1 KM Polygon 62.60% DATE:1/3/2019 CENTENNIAL PARK JOB:1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview ConsultantsLLC ARLINGTON, WA 98223 BY:DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 1,300 ' Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 54 CENTENNIAL PARK - WETLAND RATING MAP SITE Â¢ 303d Map Sub Basin Category 4A Assessed Waters Category 5 Assessed Waters DNR Hydrology 0 1 2 4 Miles LISTING ID CATEGORY PARAMETER MEDIA WATERBODY WATERBODY TYPE 47512 5 Dissolved Oxygen Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 45266 4A Bacteria Water QUILCEDA CREEK, W.F. Rivers/Streams 7299 5 Dissolved Oxygen Water QUILCEDA CREEK, W.F. Rivers/Streams 47492 5 Dissolved Oxygen Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK) Rivers/Streams 46286 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7307 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 71215 5 pH Water QUILCEDA CREEK, W.F. Rivers/Streams 71213 5 pH Water QUILCEDA CREEK, W.F. Rivers/Streams 7306 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7304 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 71212 5 pH Water UNNAMED CREEK (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 71221 5 pH Water UNNAMED DITCH (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 7305 4A Bacteria Water QUILCEDA CREEK Rivers/Streams 7302 5 Dissolved Oxygen Water QUILCEDA CREEK Rivers/Streams 47506 5 Dissolved Oxygen Water UNNAMED DITCH (TRIB TO QUILCEDA CREEK, W.F.) Rivers/Streams 7298 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 47502 5 Dissolved Oxygen Water QUILCEDA CREEK, W.F. Rivers/Streams 9806 4A Bacteria Water QUILCEDA CREEK, M.F. Rivers/Streams 74184 4A Bacteria Water QUILCEDA CREEK, W.F. Rivers/Streams DATE: 1/3/2019 CENTENNIAL PARK JOB: 1778.0001 67TH AVE NE & 172ND ST NE/HWY 531 Soundview Consultants LLC ARLINGTON, WA 98223 BY: DLS Environmental Assessment â€¢ Planning â€¢ Land Use Solutions 2907 Harborview Dr., Suite D, Gig Harbor, WA 98335 SCALE: 1 " = 2 mi Phone: (253) 514-8952 Fax: (253) 514-8954 SNOHOMISH COUNTY PARCEL NUMBERS: www.soundviewconsultants.com 31052300300800 FIGURE NO. of 55 Appendix G â€” Edgecomb Creek Relocation Documentation 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 Appendix H â€” Qualifications All field inspections, jurisdictional wetland boundary delineations, habitat assessments, and supporting documentation, including this Wetland Delineation and Fish and Wildlife Habitat Assessment Report and Buffer Enhancement Plan prepared for the Centennial Park project site were prepared by, or under the direction of, Jon Pickett of SVC. In addition, the site investigations were performed by Erin Harker, and report preparation was completed by Rachael Hyland. Jon Pickett Senior Environmental Planner Professional Experience: 9 years Jon Pickett is a Senior Scientist/Environmental Planner with diverse professional experience in habitat development as a Regional Biologist and Environmental Project Manager, with an emphasis in wetland restoration and enhancement. Jon has extensive experience successfully planning, developing, securing funding, managing and implementing numerous large-scale wetland habitat projects aimed at restoring the biological and physical functions of wetlands throughout Californiaâ€™s Central Valley and Southern California. During this time he managed a 2,200 acre private wetland and upland habitat complex as a public trust resource for conservation and consumptive use. He worked to ensure projects were designed and implemented to achieve habitat restoration goals, including reclamation of wetland and floodplain habitats, reintroduction of aquatic complexity and habitat, and reestablishment of riparian corridor. Jon has worked with Federal and State agencies and private entities on land acquisitions for conservational habitat and public use, including prioritizing acquisitions relative to value and opportunity and funding. In addition, Jon has experience in regulatory coordination to ensure projects operated in compliance with Federal, State and local environmental regulations, preparing permit documentation, coordinating with all pertinent agencies and stakeholders, and developing and maintaining appropriate permitting timelines to ensure timely approvals. He also oversaw earthwork construction components and revegetation efforts, as well as post-project monitoring, with an emphasis in native vegetation establishment and natural channel morphology. Jon earned a Bachelor of Science degree in Natural Resource Sciences from Washington State University and Bachelor of Science Minor in Forestry from Washington State University. He has been formally trained in the use of the Washington State Wetland Rating System, USACE 40-hour wetland delineation training, Determination of Ordinary High Water Mark, Using Field Indicators for Hydric Soils, and the Washington State Department of Ecology Credit and Debit Method. Erin Harker Staff Wetland Scientist Professional Experience: 3 years Erin Harker is a Staff Wetland Scientist with diverse ecological experience in both field and laboratory settings in the Pacific Northwest. She has gained hands-on experience involving research on water quality, salmon runs, amphibian surveys, restoration project performance, and marine mammal hydro- acoustics. Erin is proficient in collecting and analyzing environmental data; riparian restoration and wetland mitigation monitoring principles and techniques; analyzing local, state, and federal 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 environmental code and regulations; and technical writing. Erin has additional experience engaging students and volunteers in a suite of environmental curriculums. She currently performs wetland, ordinary high water, and forensic delineations, in addition to assisting clients through the various stages of land use planning by conducting environmental code analysis; preparing environmental assessments, mitigation reports, and biological evaluations; and completing permit applications. Erin graduated from Western Washington University with a Bachelor of Science degree in Environmental Science with a Marine Ecology focus. She has received has received 40-hour Wetland Delineation Training through the USACE and formal training through the WSDOE and Coastal Training Program in conducting forage fish surveys; using the credit-debit system for estimating wetland mitigation needs, determining the ordinary high water mark; Puget Sound coastal processes; conducting eelgrass delineations; using the 2014 wetland rating system; using field indicators for hydric soils; and administering permits in the shoreline jurisdiction. Rachael Hyland Environmental Scientist Professional Experience: 5 years Rachael Hyland is a wetland profession in training (WPIT) through the Society of Wetland Scientists and a Certified Associated Ecologist through the Ecological Society of America. Rachael has a background in wetland and ecological habitat assessments in various states, most notably Connecticut, Massachusetts, Rhode Island, and Ohio. She has experience in assessing tidal, stream, and wetland systems, reporting on biological evaluations, permitting, and site assessments. She also has extensive knowledge of bats and White Nose Syndrome (Pseudogymnoascus destructans), a fungal disease attacking bats, which was recently documented in Washington. Rachael earned a Bachelor of Science degree in Ecology and Evolutionary Biology from the University of Connecticut, with additional ecology studies at the graduate level. Rachael has completed Basic Wetland Delineator Training with the Institute for Wetland Education and Environmental Research, received 40-hour USACE wetland delineation training, and received formal training from the Washington State Department of Ecology in Selecting Wetland Mitigation Sites Using a Watershed Approach. 1778.0001 Centennial Park Soundview Consultants LLC Wetland Delineation & Habitat Assessment Report & Buffer Enhancement Plan June 28, 2019 0 0 LEGEND + 6 22+00 PROPOSED STREAM ALIGNMENT 6+00 M 145 A EXISTING CULVERT T EXISTING STREAM CENTERLINE C TO BE ABANDONED H S L EXISTING INDEX CONTOUR E I E N E EXISTING INTERMEDIATE CONTOUR S H S E T E A LIMITS OF EXCAVATION T E H C LIMITS OF FILL Y S 2 2 4 + EXISTING EDGE OF PAVEMENT SR 531 1 5 . 7 EXISTING CULVERT 1 150 145 10:1 24+00 LARGE WOODY MATERIAL TYPE B (TYP) (SEE NOTE 2) 0:1 1 2 : 1 % 1 0 : 2 FILL OLD CREEKBED (SEE NOTE 1) 1 1 1 0 0% 0:1 : : 2 1 1 1 145 : 0:1 0 2 0 10:1 + 1 0 0 5 :1 % 2 :1 2:1 1 0 : 1 LARGE WOODY MATERIAL TYPE D (TYP) 0 1 2 0 0 : (SEE NOTE 2) :1 1 + K 2 E 2 E % R 155 2:1 2 23 0 C :1 +0 B 2:1 0 M 0% CO 1 % DGE : 0 E 1 0 0 1 :1 1 : 10:1 2 10 :1 2:1 0 % 1 2 : 1 1 : 0 + 2 1 0 :1 2:1 0 2 LARGE WOODY MATERIAL TYPE A (TYP) (SEE NOTE 2) E C 140 L IN E 140 BEGIN CHANNEL GRADING EC 20+00.00 150 145 NOTES: 0 10 20 1. FILL OLD CREEKBED. AT THE NORTH END START AT ELEVATION 142.1â€™ . SCALE IN FEET TAPER TO MATCH NEW EDGE OF STREAMBED. TAPER TO PREVENT WATER FROM FLOWING INTO OLD STREAMBED. LARGE WOODY MATERIAL TYPE C (TYP) 2. SEE SHEETS HYD2 AND HYD3 FOR LARGE WOODY MATERIAL DETAILS. (SEE NOTE 2) PRELIMINARY - NOT FOR CONSTRUCTION FILE NAME X:\AA_NewX\Projects\SR531\MP008.71_XL0000 Edgecomb Creek\CAD\Sheet_Files\Edgecomb Creek Sheets.dgn Plot 1 TIME 2:25:44 PM REGION STATE FED.AID PROJ.NO. PLAN REF NO NO. SR 531 DATE 7/18/2016 HYS1 WASH EDGECOMB CREEK PLOTTED BY lapoinc DESIGNED BY L. ASSINK JOB NUMBER Washington State FISH PASSAGE SHEET ENTERED BY C. LAPOINTE 1 CHECKED BY J. HIELMAN CONTRACT NO. LOCATION NO. Department of Transportation OF 7 PROJ. ENGR. J.CHI STREAM PLAN DATE DATE SHEETS REGIONAL ADM. L. ENG REVISION DATE BY P.E. STAMP BOX P.E. STAMP BOX LEGEND 22+00 PROPOSED STREAM ALIGNMENT WING WALL EXISTING STRUCTURE 155 EXISTING WEIR 160 LIMITS OF EXCAVATION LIMITS OF FILL EXISTING EDGE OF PAVEMENT EXISTING CULVERT 1 53 SR EXISTING INDEX CONTOUR 155 EXISTING INTERMEDIATE CONTOUR 0% EXISTING STUMP EXISTING CULVERT 150 TO BE ABANDONED 1 : 00 0 2 6+ 1 :1 2 1 2:1 : 0 155 1 0 % 155 150 0 PRECAST CONCRETE BOX % 2:1 16â€™ WIDE X 6â€™ HIGH 2 155 : 1 10:1 2:1 E IN L 1 0 EC : 1 1 25+00 0 : 1 1 2: 10:1 END CHANNEL GRADING EC 26+65.16 M EK 160 A 155 E T CR C 2 H B : :1 1 :1 2 M S 10 O L E C I E E N G E D S E H S E T A 1 E 0 T : E 1 0:1 165 H C 1 :1 1 Y 0 2 S 2 : 2 1 4 1 : + 1 1 5 . 7 1 170 2 165 : 1 160 175 170 180 0 10 20 SCALE IN FEET NOTES: 1. CUT/FILL LINE IS FOR ILLUSTRATION ONLY. FINAL LIMITS OF EXCAVATION TO BE DETERMINED BE STRUCTURE TYPE AND LOCATION. PRELIMINARY - NOT FOR CONSTRUCTION FILE NAME X:\AA_NewX\Projects\SR531\MP008.71_XL0000 Edgecomb Creek\CAD\Sheet_Files\Edgecomb Creek Sheets.dgn Plot 2 TIME 2:25:44 PM REGION STATE FED.AID PROJ.NO. PLAN REF NO NO. SR 531 DATE 7/18/2016 HYS2 WASH EDGECOMB CREEK PLOTTED BY lapoinc DESIGNED BY L. ASSINK JOB NUMBER Washington State FISH PASSAGE SHEET ENTERED BY C. LAPOINTE 2 CHECKED BY J. HIELMAN CONTRACT NO. LOCATION NO. Department of Transportation OF 7 PROJ. ENGR. J.CHI STREAM PLAN DATE DATE SHEETS REGIONAL ADM. L. ENG REVISION DATE BY P.E. STAMP BOX P.E. STAMP BOX Centennial Park 18386.20 March 26, 2020 Drainage Report Section VII, Page 1 Section VII â€“ Other Permits Section VII Summary Narrative This project will require the following additional permits/approvals beyond those required by the City of Arlington. 1. Construction Stormwater General Permit by the Washington State Department of Ecology. 2. The potentially unregulated channel needs to be approved as unregulated by the Department of Natural Resources prior to any work occurring within the buffer or channel. The current proposal does not include this work. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section VIII, Page 1 Section VIII â€“ Operation and Maintenance Manual Section VIII Summary Narrative The Operation and Maintenance Manual is a standalone document that will be given to the property manager following the construction of the project. The contractor will be responsible for the maintenance and operation of all stormwater structures and BMPs requiring maintenance during construction and, after construction, responsibility will pass to the property management company. The manual shall be kept in the offices of the proposed buildings. Upon request by the City, it shall be made available for their inspection. It is generally expected that few to none of these defects will be present upon the yearly inspection of each facility. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section VIII, Page 2 Centennial Park 67th Ave and 172nd Street NE Arlington, WA 98223 OPERATION AND MAINTENANCE MANUAL Date: March 2020 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section VIII, Page 3 Operation and Maintenance Manual This Operation and Maintenance Manual has been created for Centennial Park, a 8.81 ac site located at 67th Ave and 172nd Street NE Arlington, WA 98223. The proposed stormwater management system consists of catch basins, water quality systems, and conveyance pipes that collect runoff from roofs, parking, and new landscaping, and route them to gravel infiltration trenches under parking lots throughout the site. Included in this Operation and Maintenance Manual is an 11â€ x 17â€ grading and drainage plan sheet showing the locations of the infiltration system and catch basins. Please note that this map is generated during the design phase and may not reflect all changes made in permitting and construction. CG Engineering may be contacted for an updated copy of this map once the as-built drawings are completed for the site. Maintenance sheets from the 2014 Stormwater Management Manual for Western Washington are included for the following facilities: Catch Basins: Concrete structures with steel grates that collect stormwater runoff from the site and act as junctions for storm conveyance pipes. See â€œNo. 5â€ for maintenance. Gravel Infiltration Trench: Subsurface trenches backfilled with a coarse stone aggregate, allowing for temporary storage of stormwater runoff in the voids of the aggregate. Runoff is distributed through the trench with a perforated pipe and gradually infiltrates into the surrounding soil. Vegetation Management: Landscaping can include grading, soil transfer, vegetation removal, pesticide and fertilizer applications, and watering. Stormwater contaminants include toxic organic compounds, heavy metals, oils, total suspended solids, coliform bacteria, fertilizers, and pesticides. Water Quality System: Two Modular Wetland System Catch Basins have been chosen and sized as the water quality system to treat stormwater runoff from pollution-generating hard within the driveway entrances, which bypass the infiltration. The project site is required to treat runoff to an â€œEnhanced Treatmentâ€ standard per the 2014 Washington State Department of Ecology Stormwater Management Manual. Facilities shall be inspected for defects listed in the following facility sheets. Most maintenance tasks are generally reactionary to a defect being found, rather than a matter of constant upkeep. It is generally expected that few to none of these defects will be present upon the yearly inspection of each facility. The facility sheets list the potential conditions warranting maintenance and the expected result following any maintenance. Several engineerâ€™s notes for specific tasks are provided within the facility sheets. Unless otherwise noted on the facility sheets the maintenance tasks should be performed on an â€œas neededâ€ basis: (a) When the described defect is visible to whomever performs the yearly inspection, (b) Should any defect become apparent between inspections. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Section VIII, Page 4 SAMPLE ACTIVITY LOG DATE FACILITY MAINTENANCE PERFORMED RESULTS / NOTES 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com No. 5 â€“ Catch Basins Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is performed General Trash & Trash or debris which is located immediately No Trash or debris located Debris in front of the catch basin opening or is immediately in front of blocking inletting capacity of the basin by catch basin or on grate more than 10%. opening. Trash or debris (in the basin) that exceeds 60 No trash or debris in the percent of the sump depth as measured from catch basin. the bottom of basin to invert of the lowest pipe into or out of the basin, but in no case less than a minimum of six inches clearance from the debris surface to the invert of the lowest pipe. Trash or debris in any inlet or outlet pipe Inlet and outlet pipes free blocking more than 1/3 of its height. of trash or debris. Dead animals or vegetation that could No dead animals or generate odors that could cause complaints vegetation present within or dangerous gases (e.g., methane). the catch basin. Sediment Sediment (in the basin) that exceeds 60 No sediment in the catch percent of the sump depth as measured from basin the bottom of basin to invert of the lowest pipe into or out of the basin, but in no case less than a minimum of 6 inches clearance from the sediment surface to the invert of the lowest pipe. Structure Top slab has holes larger than 2 square Top slab is free of holes Damage to inches or cracks wider than 1/4 inch and cracks. Frame and/or (Intent is to make sure no material is running Top Slab into basin). Frame not sitting flush on top slab, i.e., Frame is sitting flush on separation of more than 3/4 inch of the frame the riser rings or top slab from the top slab. Frame not securely and firmly attached. attached Fractures or Maintenance person judges that structure is Basin replaced or repaired Cracks in unsound. to design standards. Basin Walls/ Bottom Grout fillet has separated or cracked wider Pipe is regrouted and than 1/2 inch and longer than 1 foot at the secure at basin wall. joint of any inlet/outlet pipe or any evidence of soil particles entering catch basin through cracks. Settlement/ If failure of basin has created a safety, Basin replaced or repaired Misalignment function, or design problem. to design standards. Vegetation Vegetation growing across and blocking more No vegetation blocking than 10% of the basin opening. opening to basin. Vegetation growing in inlet/outlet pipe joints No vegetation or root that is more than six inches tall and less than growth present. six inches apart. Contamination See "Detention Ponds" (No. 1). No pollution present. and Pollution Volume V â€“ Runoff Treatment BMPs â€“ December 2014 4-38 No. 5 â€“ Catch Basins Maintenance Defect Conditions When Maintenance is Needed Results Expected When Component Maintenance is performed Catch Basin Cover Not in Cover is missing or only partially in place. Catch basin cover is Cover Place Any open catch basin requires maintenance. closed Locking Mechanism cannot be opened by one Mechanism opens with Mechanism maintenance person with proper tools. Bolts proper tools. Not Working into frame have less than 1/2 inch of thread. Cover Difficult One maintenance person cannot remove lid Cover can be removed by to Remove after applying normal lifting pressure. one maintenance person. (Intent is keep cover from sealing off access to maintenance.) Ladder Ladder Rungs Ladder is unsafe due to missing rungs, not Ladder meets design Unsafe securely attached to basin wall, standards and allows misalignment, rust, cracks, or sharp edges. maintenance person safe access. Metal Grates Grate opening Grate with opening wider than 7/8 inch. Grate opening meets (If Applicable) Unsafe design standards. Trash and Trash and debris that is blocking more than Grate free of trash and Debris 20% of grate surface inletting capacity. debris. Damaged or Grate missing or broken member(s) of the Grate is in place and Missing. grate. meets design standards. No. 6 â€“ Debris Barriers (e.g., Trash Racks) Maintenance Defect Condition When Maintenance is Results Expected When Components Needed Maintenance is Performed General Trash and Trash or debris that is plugging more Barrier cleared to design flow Debris than 20% of the openings in the barrier. capacity. Metal Damaged/ Bars are bent out of shape more than 3 Bars in place with no bends more Missing inches. than 3/4 inch. Bars. Bars are missing or entire barrier Bars in place according to design. missing. Bars are loose and rust is causing 50% Barrier replaced or repaired to deterioration to any part of barrier. design standards. Inlet/Outlet Debris barrier missing or not attached to Barrier firmly attached to pipe Pipe pipe Volume V â€“ Runoff Treatment BMPs â€“ December 2014 4-39 Applicable Operational BMPs: Recommended Additional Operational BMPs S411 BMPs for Landscaping and Lawn/ Vegetation Management Description of Pollutant Sources: Volume IV - Source Control BMPs â€“ December 2014 2-21 Pollutant Control Approach: Applicable Operational BMPs for Landscaping: Recommended Additional Operational BMPs for Landscaping: Volume IV - Source Control BMPs â€“ December 2014 2-22 Applicable Operational BMPs for the Use of Pesticides: Applicable Operational BMPs for Vegetation Management Volume IV - Source Control BMPs â€“ December 2014 2-23 Recommended Additional Operational BMPs for the use of pesticides: Installing an amended soil/landscape system can preserve both the plant system and the soil system more effectively. This type of approach provides a soil/landscape system with adequate depth, permeability, and organic matter to sustain itself and continue working as an effective stormwater infiltration system and a sustainable nutrient cycle. For more information, contact the Washington State University (WSU) Extension Home-Assist Program, (253) 445-4556, or Bio-Integral Resource Center (BIRC), P.O. Box 7414, Berkeley, CA.94707, or EPA to Volume IV - Source Control BMPs â€“ December 2014 2-24 obtain a publication entitled â€œSuspended, Canceled, and Restricted Pesticidesâ€ which lists all restricted pesticides and the specific uses that are allowed. Applicable Operational BMPs for Vegetation Management: Temporary and Permanent Seeding MulchingPlastic CoveringSodding Volume IV - Source Control BMPs â€“ December 2014 2-25 Irrigation: Fertilizer Management: . Volume IV - Source Control BMPs â€“ December 2014 2-26 Integrated Pest Management S412 BMPs for Loading and Unloading Areas for Liquid or Solid Material Description of Pollutant Sources: Pollutant Control Approach: Applicable Operational BMPs: At All Loading/ Unloading Areas: Volume IV - Source Control BMPs â€“ December 2014 2-27 Maintenance Guidelines for Modular Wetland System - Linear Maintenance Summary o Remove Trash from Screening Device â€“ average maintenance interval is 6 to 12 months. ï‚§ (5 minute average service time). o Remove Sediment from Separation Chamber â€“ average maintenance interval is 12 to 24 months. ï‚§ (10 minute average service time). o Replace Cartridge Filter Media â€“ average maintenance interval 12 to 24 months. ï‚§ (10-15 minute per cartridge average service time). o Replace Drain Down Filter Media â€“ average maintenance interval is 12 to 24 months. ï‚§ (5 minute average service time). o Trim Vegetation â€“ average maintenance interval is 6 to 12 months. ï‚§ (Service time varies). System Diagram Access to screening device, separation chamber and cartridge filter Access to drain down filter Inflow Pipe (optional) Pre-Treatment Chamber Biofiltration Chamber Outflow Pipe Discharge Chamber www.modularwetlands.com Maintenance Procedures Screening Device 1. Remove grate or manhole cover to gain access to the screening device in the Pre- Treatment Chamber. Vault type units do not have screening device. Maintenance can be performed without entry. 2. Remove all pollutants collected by the screening device. Removal can be done manually or with the use of a vacuum truck. The hose of the vacuum truck will not damage the screening device. 3. Screening device can easily be removed from the Pre-Treatment Chamber to gain access to separation chamber and media filters below. Replace grate or manhole cover when completed. Separation Chamber 1. Perform maintenance procedures of screening device listed above before maintaining the separation chamber. 2. With a pressure washer spray down pollutants accumulated on walls and cartridge filters. 3. Vacuum out Separation Chamber and remove all accumulated pollutants. Replace screening device, grate or manhole cover when completed. Cartridge Filters 1. Perform maintenance procedures on screening device and separation chamber before maintaining cartridge filters. 2. Enter separation chamber. 3. Unscrew the two bolts holding the lid on each cartridge filter and remove lid. 4. Remove each of 4 to 8 media cages holding the media in place. 5. Spray down the cartridge filter to remove any accumulated pollutants. 6. Vacuum out old media and accumulated pollutants. 7. Reinstall media cages and fill with new media from manufacturer or outside supplier. Manufacturer will provide specification of media and sources to purchase. 8. Replace the lid and tighten down bolts. Replace screening device, grate or manhole cover when completed. Drain Down Filter 1. Remove hatch or manhole cover over discharge chamber and enter chamber. 2. Unlock and lift drain down filter housing and remove old media block. Replace with new media block. Lower drain down filter housing and lock into place. 3. Exit chamber and replace hatch or manhole cover. www.modularwetlands.com Maintenance Notes 1. Following maintenance and/or inspection, it is recommended the maintenance operator prepare a maintenance/inspection record. The record should include any maintenance activities performed, amount and description of debris collected, and condition of the system and its various filter mechanisms. 2. The owner should keep maintenance/inspection record(s) for a minimum of five years from the date of maintenance. These records should be made available to the governing municipality for inspection upon request at any time. 3. Transport all debris, trash, organics and sediments to approved facility for disposal in accordance with local and state requirements. 4. Entry into chambers may require confined space training based on state and local regulations. 5. No fertilizer shall be used in the Biofiltration Chamber. 6. Irrigation should be provided as recommended by manufacturer and/or landscape architect. Amount of irrigation required is dependent on plant species. Some plants may require irrigation. www.modularwetlands.com Maintenance Procedure Illustration Screening Device The screening device is located directly under the manhole or grate over the Pre-Treatment Chamber. Itâ€™s mounted directly underneath for easy access and cleaning. Device can be cleaned by hand or with a vacuum truck. Separation Chamber The separation chamber is located directly beneath the screening device. It can be quickly cleaned using a vacuum truck or by hand. A pressure washer is useful to assist in the cleaning process. www.modularwetlands.com Cartridge Filters The cartridge filters are located in the Pre-Treatment chamber connected to the wall adjacent to the biofiltration chamber. The cartridges have removable tops to access the individual media filters. Once the cartridge is open media can be easily removed and replaced by hand or a vacuum truck. Drain Down Filter The drain down filter is located in the Discharge Chamber. The drain filter unlocks from the wall mount and hinges up. Remove filter block and replace with new block. www.modularwetlands.com Trim Vegetation Vegetation should be maintained in the same manner as surrounding vegetation and trimmed as needed. No fertilizer shall be used on the plants. Irrigation per the recommendation of the manufacturer and or landscape architect. Different types of vegetation requires different amounts of irrigation. www.modularwetlands.com Inspection Form Modular Wetland System, Inc. P. 760.433-7640 F. 760-433-3176 E. Info@modularwetlands.com www.modularwetlands.com Inspection Report Modular Wetlands System Project Name For Office Use Only Project Address (city) (Zip Code) (Reviewed By) Owner / Management Company (Date) _ Office personnel to complete section to Contact Phone ( ) the left. Inspector Name Date / / Time AM / PM Type of Inspection Routine Follow Up Complaint Storm Storm Event in Last 72-hours? No Yes Weather Condition Additional Notes Inspection Checklist Modular Wetland System Type (Curb, Grate or UG Vault): Size (22', 14' or etc.): Structural Integrity: Yes No Comments Damage to pre-treatment access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Damage to discharge chamber access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Does the MWS unit show signs of structural deterioration (cracks in the wall, damage to frame)? Is the inlet/outlet pipe or drain down pipe damaged or otherwise not functioning properly? Working Condition: Is there evidence of illicit discharge or excessive oil, grease, or other automobile fluids entering and clogging the unit? Is there standing water in inappropriate areas after a dry period? Is the filter insert (if applicable) at capacity and/or is there an accumulation of debris/trash on the shelf system? Does the depth of sediment/trash/debris suggest a blockage of the inflow pipe, bypass or cartridge filter? If yes, Depth: specify which one in the comments section. Note depth of accumulation in in pre-treatment chamber. Chamber: Does the cartridge filter media need replacement in pre-treatment chamber and/or discharge chamber? Any signs of improper functioning in the discharge chamber? Note issues in comments section. Other Inspection Items: Is there an accumulation of sediment/trash/debris in the wetland media (if applicable)? Is it evident that the plants are alive and healthy (if applicable)? Please note Plant Information below. Is there a septic or foul odor coming from inside the system? Waste: Yes No Recommended Maintenance Plant Information Sediment / Silt / Clay No Cleaning Needed Damage to Plants Trash / Bags / Bottles Schedule Maintenance as Planned Plant Replacement Green Waste / Leaves / Foliage Needs Immediate Maintenance Plant Trimming Additional Notes: 2972 San Luis Rey Road, Oceanside, CA 92058 P (760) 433-7640 F (760) 433-3176 Maintenance Report Modular Wetland System, Inc. P. 760.433-7640 F. 760-433-3176 E. Info@modularwetlands.com www.modularwetlands.com Cleaning and Maintenance Report Modular Wetlands System Project Name For Office Use Only Project Address (city) (Zip Code) (Reviewed By) Owner / Management Company (Date) _ Office personnel to complete section to Contact Phone ( ) the left. Inspector Name Date / / Time AM / PM Type of Inspection Routine Follow Up Complaint Storm Storm Event in Last 72-hours? No Yes Weather Condition Additional Notes Condition of Media Operational Per Site GPS Coordinates Manufacturer / Trash Foliage Sediment Total Debris 25/50/75/100 Manufactures' Map # of Insert Description / Sizing Accumulation Accumulation Accumulation Accumulation (will be changed Specifications @ 75%) (If not, why?) Lat: MWS Catch Basins Long: MWS Sedimentation Basin Media Filter Condition Plant Condition Drain Down Media Condition Discharge Chamber Condition Drain Down Pipe Condition Inlet and Outlet Pipe Condition Comments: 2972 San Luis Rey Road, Oceanside, CA 92058 P. 760.433.7640 F. 760.433.3176 Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 1 Appendix A â€“ WWHM Reports Appendix A Summary A-1 Narrative A-2 Overall Flow Control and LID Calculation, with Basin A-12 Sub-Basin 2 Infiltration Trench Verification Calculation A-25 Drawdown Volume Calculation A-26 Water Quality Flows for MWS Catch Basins A-30 Conveyance Analysis Calculations in this section start with a global look at the site to verify compliance with the flow control Standard and the Low Impact Development (LID) Standard. The majority of developed areas on the site area fully infiltrated, but the area on the western side of the site is bypassed at allow rates. The bypassed area is referred to in the forthcoming calculations as Sub-Basin 1. The infiltrated area is Sub-Basin 2. By 100% infiltrating Sub-Basin 2, the bypassed area is small enough that when added together, the LID and flow control standards are met. Following this, it was important to break Sub-Basin 2 into further Sub-Basins. This is because the infiltration Beds are at different elevations, and we wanted to verify that there was not an imbalance that would lead overflows from one trench that would not be caught on the overall calculation, which simply runs all of basin 2 into an element depicting all of the infiltration area as 1. Following this, water quality calculations discussed in Chapter 4 area provided. This includes the Drawdown time water quality volume, along with the water quality treatment flows for the Pollution Generating hard surfaces flowing toward the right of way within the bypass basin. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 2 WWHM2012 PROJECT REPORT FIGURE A-1 DEVELOPED PROJECT FLOW CHART (OVERALL) WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name: 10.14.19 bypass calc Site Name: Site Address: City : Report Date: 10/15/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 ___________________________________________________________________ Low Flow Threshold for POC 1 : 50 Percent of the 2 Year ___________________________________________________________________ High Flow Threshold for POC 1: 50 year ___________________________________________________________________ PREDEVELOPED LAND USE 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 3 Name : Basin 1 Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat 4.222 C, Forest, Mod .783 C, Forest, Steep 1.324 Pervious Total 6.329 Impervious Land Use acre Impervious Total 0 Basin Total 6.329 ____________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ MITIGATED LAND USE Name : Basin 1 BYPASS Bypass: Yes GroundWater: No Pervious Land Use acre C, Lawn, Flat .32 Pervious Total 0.32 Impervious Land Use acre SIDEWALKS FLAT 0.326 PARKING FLAT 0.115 Impervious Total 0.441 Basin Total 0.761 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ Name : Basin 2 TO ON SITE INFILTRATION Bypass: No GroundWater: No 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 4 Pervious Land Use acre C, Lawn, Flat 1.565 Pervious Total 1.565 Impervious Land Use acre ROOF TOPS FLAT 1.463 SIDEWALKS FLAT 0.918 PARKING FLAT 1.622 Impervious Total 4.003 Basin Total 5.568 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 1 Gravel Trench Bed 1 ___________________________________________________________________ Name : Gravel Trench Bed 101-110 Bottom Length: 1850.00 ft. Bottom Width: 20.00 ft. (37,000 SF TOTAL) Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 944.466 Total Volume Through Riser (ac-ft.): 0.013 Total Volume Through Facility (ac-ft.): 944.479 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 ___________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.849 0.000 0.000 0.000 0.0167 0.849 0.005 0.000 0.805 0.0333 0.849 0.009 0.000 0.805 0.0500 0.849 0.014 0.000 0.805 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 5 0.0667 0.849 0.019 0.000 0.805 0.0833 0.849 0.024 0.000 0.805 0.1000 0.849 0.029 0.000 0.805 0.1167 0.849 0.034 0.000 0.805 0.1333 0.849 0.039 0.000 0.805 0.1500 0.849 0.044 0.000 0.805 0.1667 0.849 0.049 0.000 0.805 0.1833 0.849 0.054 0.000 0.805 0.2000 0.849 0.059 0.000 0.805 0.2167 0.849 0.064 0.000 0.805 0.2333 0.849 0.069 0.000 0.805 0.2500 0.849 0.074 0.000 0.805 0.2667 0.849 0.079 0.000 0.805 0.2833 0.849 0.084 0.000 0.805 0.3000 0.849 0.089 0.000 0.805 0.3167 0.849 0.094 0.000 0.805 0.3333 0.849 0.099 0.000 0.805 0.3500 0.849 0.104 0.000 0.805 0.3667 0.849 0.109 0.000 0.805 0.3833 0.849 0.114 0.000 0.805 0.4000 0.849 0.118 0.000 0.805 0.4167 0.849 0.123 0.000 0.805 0.4333 0.849 0.128 0.000 0.805 0.4500 0.849 0.133 0.000 0.805 0.4667 0.849 0.138 0.000 0.805 0.4833 0.849 0.143 0.000 0.805 0.5000 0.849 0.148 0.000 0.805 0.5167 0.849 0.153 0.000 0.805 0.5333 0.849 0.158 0.000 0.805 0.5500 0.849 0.163 0.000 0.805 0.5667 0.849 0.168 0.000 0.805 0.5833 0.849 0.173 0.000 0.805 0.6000 0.849 0.178 0.000 0.805 0.6167 0.849 0.183 0.000 0.805 0.6333 0.849 0.188 0.000 0.805 0.6500 0.849 0.193 0.000 0.805 0.6667 0.849 0.198 0.000 0.805 0.6833 0.849 0.203 0.000 0.805 0.7000 0.849 0.208 0.000 0.805 0.7167 0.849 0.213 0.000 0.805 0.7333 0.849 0.218 0.000 0.805 0.7500 0.849 0.223 0.000 0.805 0.7667 0.849 0.227 0.000 0.805 0.7833 0.849 0.232 0.000 0.805 0.8000 0.849 0.237 0.000 0.805 0.8167 0.849 0.242 0.000 0.805 0.8333 0.849 0.247 0.000 0.805 0.8500 0.849 0.252 0.000 0.805 0.8667 0.849 0.257 0.000 0.805 0.8833 0.849 0.262 0.000 0.805 0.9000 0.849 0.267 0.000 0.805 0.9167 0.849 0.272 0.000 0.805 0.9333 0.849 0.277 0.000 0.805 0.9500 0.849 0.282 0.000 0.805 0.9667 0.849 0.287 0.000 0.805 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 6 0.9833 0.849 0.292 0.000 0.805 1.0000 0.849 0.297 0.000 0.805 1.0167 0.849 0.302 0.000 0.805 1.0333 0.849 0.307 0.000 0.805 1.0500 0.849 0.312 0.000 0.805 1.0667 0.849 0.317 0.000 0.805 1.0833 0.849 0.322 0.000 0.805 1.1000 0.849 0.327 0.000 0.805 1.1167 0.849 0.332 0.000 0.805 1.1333 0.849 0.336 0.000 0.805 1.1500 0.849 0.341 0.000 0.805 1.1667 0.849 0.346 0.000 0.805 1.1833 0.849 0.351 0.000 0.805 1.2000 0.849 0.356 0.000 0.805 1.2167 0.849 0.361 0.000 0.805 1.2333 0.849 0.366 0.000 0.805 1.2500 0.849 0.371 0.000 0.805 1.2667 0.849 0.376 0.000 0.805 1.2833 0.849 0.381 0.000 0.805 1.3000 0.849 0.386 0.000 0.805 1.3167 0.849 0.391 0.000 0.805 1.3333 0.849 0.396 0.000 0.805 1.3500 0.849 0.401 0.000 0.805 1.3667 0.849 0.406 0.000 0.805 1.3833 0.849 0.411 0.000 0.805 1.4000 0.849 0.416 0.000 0.805 1.4167 0.849 0.421 0.000 0.805 1.4333 0.849 0.426 0.000 0.805 1.4500 0.849 0.431 0.000 0.805 1.4667 0.849 0.436 0.015 0.805 1.4833 0.849 0.441 0.043 0.805 1.5000 0.849 0.445 0.078 0.805 ___________________________________________________________________ ___________________________________________________________________ ANALYSIS RESULTS Stream Protection Duration ___________________________________________________________________ Predeveloped Landuse Totals for POC #1 Total Pervious Area:6.329 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #1 Total Pervious Area:1.885 Total Impervious Area:4.444 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.241736 5 year 0.378011 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 7 10 year 0.484637 25 year 0.638926 50 year 0.768682 100 year 0.911671 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.276088 5 year 0.393177 10 year 0.482248 25 year 0.608712 50 year 0.71355 100 year 0.827948 Stream Protection Duration POC #1 The Facility PASSED. Flow(cfs) Predev Mit Percentage Pass/Fail 0.1209 16010 1379 8 Pass 0.1274 13503 1141 8 Pass 0.1340 11644 1008 8 Pass 0.1405 9768 847 8 Pass 0.1470 8147 720 8 Pass 0.1536 7007 634 9 Pass 0.1601 5858 551 9 Pass 0.1667 5067 472 9 Pass 0.1732 4348 407 9 Pass 0.1798 3790 365 9 Pass 0.1863 3189 327 10 Pass 0.1928 2789 296 10 Pass 0.1994 2413 258 10 Pass 0.2059 2160 231 10 Pass 0.2125 1889 198 10 Pass 0.2190 1626 182 11 Pass 0.2256 1470 167 11 Pass 0.2321 1303 156 11 Pass 0.2387 1166 147 12 Pass 0.2452 1031 129 12 Pass 0.2517 965 120 12 Pass 0.2583 900 108 12 Pass 0.2648 840 100 11 Pass 0.2714 778 90 11 Pass 0.2779 742 84 11 Pass 0.2845 693 78 11 Pass 0.2910 641 73 11 Pass 0.2975 609 69 11 Pass 0.3041 581 66 11 Pass 0.3106 560 63 11 Pass 0.3172 544 58 10 Pass 0.3237 528 55 10 Pass 0.3303 504 49 9 Pass 0.3368 465 44 9 Pass 0.3433 442 43 9 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 8 0.3499 423 39 9 Pass 0.3564 402 35 8 Pass 0.3630 384 33 8 Pass 0.3695 367 31 8 Pass 0.3761 350 28 8 Pass 0.3826 338 24 7 Pass 0.3892 328 22 6 Pass 0.3957 321 21 6 Pass 0.4022 310 18 5 Pass 0.4088 304 16 5 Pass 0.4153 295 14 4 Pass 0.4219 286 13 4 Pass 0.4284 275 8 2 Pass 0.4350 266 8 3 Pass 0.4415 254 8 3 Pass 0.4480 241 8 3 Pass 0.4546 234 8 3 Pass 0.4611 218 8 3 Pass 0.4677 211 8 3 Pass 0.4742 203 7 3 Pass 0.4808 193 6 3 Pass 0.4873 174 6 3 Pass 0.4939 168 6 3 Pass 0.5004 160 5 3 Pass 0.5069 153 5 3 Pass 0.5135 146 5 3 Pass 0.5200 138 5 3 Pass 0.5266 132 5 3 Pass 0.5331 123 5 4 Pass 0.5397 115 5 4 Pass 0.5462 98 5 5 Pass 0.5527 83 5 6 Pass 0.5593 70 5 7 Pass 0.5658 59 5 8 Pass 0.5724 51 4 7 Pass 0.5789 46 4 8 Pass 0.5855 40 4 10 Pass 0.5920 37 4 10 Pass 0.5985 35 4 11 Pass 0.6051 29 4 13 Pass 0.6116 26 4 15 Pass 0.6182 19 4 21 Pass 0.6247 16 4 25 Pass 0.6313 15 4 26 Pass 0.6378 11 4 36 Pass 0.6444 7 4 57 Pass 0.6509 6 4 66 Pass 0.6574 4 4 100 Pass 0.6640 4 4 100 Pass 0.6705 4 4 100 Pass 0.6771 4 3 75 Pass 0.6836 4 3 75 Pass 0.6902 4 3 75 Pass 0.6967 3 3 100 Pass 0.7032 3 3 100 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 9 0.7098 3 3 100 Pass 0.7163 3 3 100 Pass 0.7229 3 3 100 Pass 0.7294 3 3 100 Pass 0.7360 3 3 100 Pass 0.7425 3 2 66 Pass 0.7491 3 2 66 Pass 0.7556 3 2 66 Pass 0.7621 2 2 100 Pass 0.7687 2 2 100 Pass ____________________________________________________ LID Duration POC #1 The Facility PASSED. Flow(cfs) Predev Mit Percentage Pass/Fail 0.0193 284899 73898 25 Pass 0.0204 273563 69813 25 Pass 0.0214 262868 66027 25 Pass 0.0224 252816 62519 24 Pass 0.0234 243191 59290 24 Pass 0.0245 234207 56188 23 Pass 0.0255 225652 53344 23 Pass 0.0265 217524 50713 23 Pass 0.0275 209653 48189 22 Pass 0.0286 202124 45772 22 Pass 0.0296 194980 43505 22 Pass 0.0306 188243 41345 21 Pass 0.0316 181676 39227 21 Pass 0.0327 175324 37366 21 Pass 0.0337 169357 35527 20 Pass 0.0347 163560 33794 20 Pass 0.0357 158063 32190 20 Pass 0.0368 152780 30586 20 Pass 0.0378 147690 29132 19 Pass 0.0388 142770 27805 19 Pass 0.0398 138022 26458 19 Pass 0.0409 133466 25153 18 Pass 0.0419 129103 24020 18 Pass 0.0429 124932 22886 18 Pass 0.0440 120889 21817 18 Pass 0.0450 117018 20826 17 Pass 0.0460 113296 19922 17 Pass 0.0470 109767 19017 17 Pass 0.0481 106367 18148 17 Pass 0.0491 103158 17316 16 Pass 0.0501 100078 16489 16 Pass 0.0511 97084 15719 16 Pass 0.0522 94089 15066 16 Pass 0.0532 91266 14399 15 Pass 0.0542 88592 13787 15 Pass 0.0552 85983 13152 15 Pass 0.0563 83438 12557 15 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 10 0.0573 80957 12003 14 Pass 0.0583 78625 11475 14 Pass 0.0593 76358 11000 14 Pass 0.0604 74134 10517 14 Pass 0.0614 71973 10042 13 Pass 0.0624 69899 9589 13 Pass 0.0634 67931 9176 13 Pass 0.0645 65920 8778 13 Pass 0.0655 64038 8412 13 Pass 0.0665 62199 8070 12 Pass 0.0675 60488 7734 12 Pass 0.0686 58734 7392 12 Pass 0.0696 57087 7099 12 Pass 0.0706 55504 6817 12 Pass 0.0716 53985 6509 12 Pass 0.0727 52552 6239 11 Pass 0.0737 51098 5989 11 Pass 0.0747 49729 5736 11 Pass 0.0757 48360 5499 11 Pass 0.0768 47013 5270 11 Pass 0.0778 45751 5069 11 Pass 0.0788 44531 4855 10 Pass 0.0798 43398 4695 10 Pass 0.0809 42200 4537 10 Pass 0.0819 41109 4368 10 Pass 0.0829 39997 4207 10 Pass 0.0839 38992 4068 10 Pass 0.0850 37944 3927 10 Pass 0.0860 36981 3788 10 Pass 0.0870 36019 3651 10 Pass 0.0881 35078 3525 10 Pass 0.0891 34158 3403 9 Pass 0.0901 33302 3300 9 Pass 0.0911 32447 3198 9 Pass 0.0922 31613 3097 9 Pass 0.0932 30800 2999 9 Pass 0.0942 30051 2892 9 Pass 0.0952 29303 2804 9 Pass 0.0963 28575 2710 9 Pass 0.0973 27827 2627 9 Pass 0.0983 27121 2547 9 Pass 0.0993 26437 2460 9 Pass 0.1004 25795 2383 9 Pass 0.1014 25153 2304 9 Pass 0.1024 24490 2227 9 Pass 0.1034 23913 2165 9 Pass 0.1045 23335 2101 9 Pass 0.1055 22779 2042 8 Pass 0.1065 22202 1977 8 Pass 0.1075 21645 1927 8 Pass 0.1086 21139 1871 8 Pass 0.1096 20659 1821 8 Pass 0.1106 20114 1772 8 Pass 0.1116 19654 1721 8 Pass 0.1127 19186 1671 8 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 11 0.1137 18749 1628 8 Pass 0.1147 18257 1590 8 Pass 0.1157 17817 1552 8 Pass 0.1168 17353 1509 8 Pass 0.1178 16946 1466 8 Pass 0.1188 16519 1428 8 Pass 0.1198 16093 1390 8 Pass 0.1209 15682 1361 8 Pass _____________________________________________________ ___________________________________________________________________ Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 12 FIGURE A-2 DEVELOPED BASIN 2 FLOW CHART WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name: 10.16.19 Basin 2 calc Site Name: Centennial Park Site Address: City : Report Date: 10/16/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 ___________________________________________________________________ Low Flow Threshold for POC 1 : 50 Percent of the 2 Year ___________________________________________________________________ High Flow Threshold for POC 1: 50 year 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 13 ___________________________________________________________________ PREDEVELOPED LAND USE Name : Basin 2 â€“ To Onsite Infiltration Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat 3.461 C, Forest, Mod .783 C, Forest, Steep 1.324 Pervious Total 5.568 Impervious Land Use acre Impervious Total 0 Basin Total 5.568 __________________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ MITIGATED LAND USE Name : Basin 2a Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat 1.046 Pervious Total 1.046 Impervious Land Use acre ROOF TOPS FLAT 0.549 SIDEWALKS FLAT 0.566 PARKING FLAT 0.766 Impervious Total 1.881 Basin Total 2.927 _______________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 2a Gravel Trench Bed 2a __________________________________________________________________ 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 14 Name : Gravel Trench Bed 2a (106, 107, 108) Bottom Length: 338.00 ft. Bottom Width: 40.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 89.981 Total Volume Through Riser (ac-ft.): 0.042 Total Volume Through Facility (ac-ft.): 90.023 Percent Infiltrated: 99.95 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 Gravel Trench Bed 2c ___________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.310 0.000 0.000 0.000 0.0167 0.310 0.001 0.000 0.294 0.0333 0.310 0.003 0.000 0.294 0.0500 0.310 0.005 0.000 0.294 0.0667 0.310 0.007 0.000 0.294 0.0833 0.310 0.009 0.000 0.294 0.1000 0.310 0.010 0.000 0.294 0.1167 0.310 0.012 0.000 0.294 0.1333 0.310 0.014 0.000 0.294 0.1500 0.310 0.016 0.000 0.294 0.1667 0.310 0.018 0.000 0.294 0.1833 0.310 0.019 0.000 0.294 0.2000 0.310 0.021 0.000 0.294 0.2167 0.310 0.023 0.000 0.294 0.2333 0.310 0.025 0.000 0.294 0.2500 0.310 0.027 0.000 0.294 0.2667 0.310 0.029 0.000 0.294 0.2833 0.310 0.030 0.000 0.294 0.3000 0.310 0.032 0.000 0.294 0.3167 0.310 0.034 0.000 0.294 0.3333 0.310 0.036 0.000 0.294 0.3500 0.310 0.038 0.000 0.294 0.3667 0.310 0.039 0.000 0.294 0.3833 0.310 0.041 0.000 0.294 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 15 0.4000 0.310 0.043 0.000 0.294 0.4167 0.310 0.045 0.000 0.294 0.4333 0.310 0.047 0.000 0.294 0.4500 0.310 0.048 0.000 0.294 0.4667 0.310 0.050 0.000 0.294 0.4833 0.310 0.052 0.000 0.294 0.5000 0.310 0.054 0.000 0.294 0.5167 0.310 0.056 0.000 0.294 0.5333 0.310 0.057 0.000 0.294 0.5500 0.310 0.059 0.000 0.294 0.5667 0.310 0.061 0.000 0.294 0.5833 0.310 0.063 0.000 0.294 0.6000 0.310 0.065 0.000 0.294 0.6167 0.310 0.067 0.000 0.294 0.6333 0.310 0.068 0.000 0.294 0.6500 0.310 0.070 0.000 0.294 0.6667 0.310 0.072 0.000 0.294 0.6833 0.310 0.074 0.000 0.294 0.7000 0.310 0.076 0.000 0.294 0.7167 0.310 0.077 0.000 0.294 0.7333 0.310 0.079 0.000 0.294 0.7500 0.310 0.081 0.000 0.294 0.7667 0.310 0.083 0.000 0.294 0.7833 0.310 0.085 0.000 0.294 0.8000 0.310 0.086 0.000 0.294 0.8167 0.310 0.088 0.000 0.294 0.8333 0.310 0.090 0.000 0.294 0.8500 0.310 0.092 0.000 0.294 0.8667 0.310 0.094 0.000 0.294 0.8833 0.310 0.096 0.000 0.294 0.9000 0.310 0.097 0.000 0.294 0.9167 0.310 0.099 0.000 0.294 0.9333 0.310 0.101 0.000 0.294 0.9500 0.310 0.103 0.000 0.294 0.9667 0.310 0.105 0.000 0.294 0.9833 0.310 0.106 0.000 0.294 1.0000 0.310 0.108 0.000 0.294 1.0167 0.310 0.110 0.000 0.294 1.0333 0.310 0.112 0.000 0.294 1.0500 0.310 0.114 0.000 0.294 1.0667 0.310 0.115 0.000 0.294 1.0833 0.310 0.117 0.000 0.294 1.1000 0.310 0.119 0.000 0.294 1.1167 0.310 0.121 0.000 0.294 1.1333 0.310 0.123 0.000 0.294 1.1500 0.310 0.124 0.000 0.294 1.1667 0.310 0.126 0.000 0.294 1.1833 0.310 0.128 0.000 0.294 1.2000 0.310 0.130 0.000 0.294 1.2167 0.310 0.132 0.000 0.294 1.2333 0.310 0.134 0.000 0.294 1.2500 0.310 0.135 0.000 0.294 1.2667 0.310 0.137 0.000 0.294 1.2833 0.310 0.139 0.000 0.294 1.3000 0.310 0.141 0.000 0.294 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 16 1.3167 0.310 0.143 0.000 0.294 1.3333 0.310 0.144 0.000 0.294 1.3500 0.310 0.146 0.000 0.294 1.3667 0.310 0.148 0.000 0.294 1.3833 0.310 0.150 0.000 0.294 1.4000 0.310 0.152 0.000 0.294 1.4167 0.310 0.153 0.000 0.294 1.4333 0.310 0.155 0.000 0.294 1.4500 0.310 0.157 0.000 0.294 1.4667 0.310 0.159 0.015 0.294 1.4833 0.310 0.161 0.043 0.294 1.5000 0.310 0.162 0.078 0.294 ___________________________________________________________________ Name : Basin 2b Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .09 Pervious Total 0.09 Impervious Land Use acre ROOF TOPS FLAT 0.284 SIDEWALKS FLAT 0.081 PARKING FLAT 0.25 Impervious Total 0.615 Basin Total 0.705 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 2b Gravel Trench Bed 2b ___________________________________________________________________ Name : Gravel Trench Bed 2b (109, 110) Bottom Length: 290.00 ft. Bottom Width: 25.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 22.389 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 17 Total Volume Through Riser (ac-ft.): 0 Total Volume Through Facility (ac-ft.): 22.389 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 Gravel Trench Bed 2c ___________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.166 0.000 0.000 0.000 0.0167 0.166 0.001 0.000 0.157 0.0333 0.166 0.001 0.000 0.157 0.0500 0.166 0.002 0.000 0.157 0.0667 0.166 0.003 0.000 0.157 0.0833 0.166 0.004 0.000 0.157 0.1000 0.166 0.005 0.000 0.157 0.1167 0.166 0.006 0.000 0.157 0.1333 0.166 0.007 0.000 0.157 0.1500 0.166 0.008 0.000 0.157 0.1667 0.166 0.009 0.000 0.157 0.1833 0.166 0.010 0.000 0.157 0.2000 0.166 0.011 0.000 0.157 0.2167 0.166 0.012 0.000 0.157 0.2333 0.166 0.013 0.000 0.157 0.2500 0.166 0.014 0.000 0.157 0.2667 0.166 0.015 0.000 0.157 0.2833 0.166 0.016 0.000 0.157 0.3000 0.166 0.017 0.000 0.157 0.3167 0.166 0.018 0.000 0.157 0.3333 0.166 0.019 0.000 0.157 0.3500 0.166 0.020 0.000 0.157 0.3667 0.166 0.021 0.000 0.157 0.3833 0.166 0.022 0.000 0.157 0.4000 0.166 0.023 0.000 0.157 0.4167 0.166 0.024 0.000 0.157 0.4333 0.166 0.025 0.000 0.157 0.4500 0.166 0.026 0.000 0.157 0.4667 0.166 0.027 0.000 0.157 0.4833 0.166 0.028 0.000 0.157 0.5000 0.166 0.029 0.000 0.157 0.5167 0.166 0.030 0.000 0.157 0.5333 0.166 0.031 0.000 0.157 0.5500 0.166 0.032 0.000 0.157 0.5667 0.166 0.033 0.000 0.157 0.5833 0.166 0.034 0.000 0.157 0.6000 0.166 0.035 0.000 0.157 0.6167 0.166 0.035 0.000 0.157 0.6333 0.166 0.036 0.000 0.157 0.6500 0.166 0.037 0.000 0.157 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 18 0.6667 0.166 0.038 0.000 0.157 0.6833 0.166 0.039 0.000 0.157 0.7000 0.166 0.040 0.000 0.157 0.7167 0.166 0.041 0.000 0.157 0.7333 0.166 0.042 0.000 0.157 0.7500 0.166 0.043 0.000 0.157 0.7667 0.166 0.044 0.000 0.157 0.7833 0.166 0.045 0.000 0.157 0.8000 0.166 0.046 0.000 0.157 0.8167 0.166 0.047 0.000 0.157 0.8333 0.166 0.048 0.000 0.157 0.8500 0.166 0.049 0.000 0.157 0.8667 0.166 0.050 0.000 0.157 0.8833 0.166 0.051 0.000 0.157 0.9000 0.166 0.052 0.000 0.157 0.9167 0.166 0.053 0.000 0.157 0.9333 0.166 0.054 0.000 0.157 0.9500 0.166 0.055 0.000 0.157 0.9667 0.166 0.056 0.000 0.157 0.9833 0.166 0.057 0.000 0.157 1.0000 0.166 0.058 0.000 0.157 1.0167 0.166 0.059 0.000 0.157 1.0333 0.166 0.060 0.000 0.157 1.0500 0.166 0.061 0.000 0.157 1.0667 0.166 0.062 0.000 0.157 1.0833 0.166 0.063 0.000 0.157 1.1000 0.166 0.064 0.000 0.157 1.1167 0.166 0.065 0.000 0.157 1.1333 0.166 0.066 0.000 0.157 1.1500 0.166 0.067 0.000 0.157 1.1667 0.166 0.068 0.000 0.157 1.1833 0.166 0.068 0.000 0.157 1.2000 0.166 0.069 0.000 0.157 1.2167 0.166 0.070 0.000 0.157 1.2333 0.166 0.071 0.000 0.157 1.2500 0.166 0.072 0.000 0.157 1.2667 0.166 0.073 0.000 0.157 1.2833 0.166 0.074 0.000 0.157 1.3000 0.166 0.075 0.000 0.157 1.3167 0.166 0.076 0.000 0.157 1.3333 0.166 0.077 0.000 0.157 1.3500 0.166 0.078 0.000 0.157 1.3667 0.166 0.079 0.000 0.157 1.3833 0.166 0.080 0.000 0.157 1.4000 0.166 0.081 0.000 0.157 1.4167 0.166 0.082 0.000 0.157 1.4333 0.166 0.083 0.000 0.157 1.4500 0.166 0.084 0.000 0.157 1.4667 0.166 0.085 0.015 0.157 1.4833 0.166 0.086 0.043 0.157 1.5000 0.166 0.087 0.078 0.157 ___________________________________________________________________ Name : Basin 2c 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 19 Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .429 Pervious Total 0.429 Impervious Land Use acre ROOF TOPS FLAT 0.63 SIDEWALKS FLAT 0.271 PARKING FLAT 0.606 Impervious Total 1.507 Basin Total 1.936 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 2c Gravel Trench Bed 2c ___________________________________________________________________ Name : Gravel Trench Bed 2c (101-105) Bottom Length: 406.00 ft. Bottom Width: 40.00 ft. Trench bottom slope 1: 0 To 1 Trench Left side slope 0: 0 To 1 Trench right side slope 2: 0 To 1 Material thickness of first layer: 1.5 Pour Space of material for first layer: 0.35 Material thickness of second layer: 0 Pour Space of material for second layer: 0 Material thickness of third layer: 0 Pour Space of material for third layer: 0 Infiltration On Infiltration rate: 0.94 Infiltration safety factor: 1 Total Volume Infiltrated (ac-ft.): 58.717 Total Volume Through Riser (ac-ft.): 0 Total Volume Through Facility (ac-ft.): 58.717 Percent Infiltrated: 100 Total Precip Applied to Facility: 0 Total Evap From Facility: 0 Discharge Structure Riser Height: 1.45 ft. Riser Diameter: 8 in. Element Flows To: Outlet 1 Outlet 2 _________________________________________________________________ Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.372 0.000 0.000 0.000 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 20 0.0167 0.372 0.002 0.000 0.353 0.0333 0.372 0.004 0.000 0.353 0.0500 0.372 0.006 0.000 0.353 0.0667 0.372 0.008 0.000 0.353 0.0833 0.372 0.010 0.000 0.353 0.1000 0.372 0.013 0.000 0.353 0.1167 0.372 0.015 0.000 0.353 0.1333 0.372 0.017 0.000 0.353 0.1500 0.372 0.019 0.000 0.353 0.1667 0.372 0.021 0.000 0.353 0.1833 0.372 0.023 0.000 0.353 0.2000 0.372 0.026 0.000 0.353 0.2167 0.372 0.028 0.000 0.353 0.2333 0.372 0.030 0.000 0.353 0.2500 0.372 0.032 0.000 0.353 0.2667 0.372 0.034 0.000 0.353 0.2833 0.372 0.037 0.000 0.353 0.3000 0.372 0.039 0.000 0.353 0.3167 0.372 0.041 0.000 0.353 0.3333 0.372 0.043 0.000 0.353 0.3500 0.372 0.045 0.000 0.353 0.3667 0.372 0.047 0.000 0.353 0.3833 0.372 0.050 0.000 0.353 0.4000 0.372 0.052 0.000 0.353 0.4167 0.372 0.054 0.000 0.353 0.4333 0.372 0.056 0.000 0.353 0.4500 0.372 0.058 0.000 0.353 0.4667 0.372 0.060 0.000 0.353 0.4833 0.372 0.063 0.000 0.353 0.5000 0.372 0.065 0.000 0.353 0.5167 0.372 0.067 0.000 0.353 0.5333 0.372 0.069 0.000 0.353 0.5500 0.372 0.071 0.000 0.353 0.5667 0.372 0.073 0.000 0.353 0.5833 0.372 0.076 0.000 0.353 0.6000 0.372 0.078 0.000 0.353 0.6167 0.372 0.080 0.000 0.353 0.6333 0.372 0.082 0.000 0.353 0.6500 0.372 0.084 0.000 0.353 0.6667 0.372 0.087 0.000 0.353 0.6833 0.372 0.089 0.000 0.353 0.7000 0.372 0.091 0.000 0.353 0.7167 0.372 0.093 0.000 0.353 0.7333 0.372 0.095 0.000 0.353 0.7500 0.372 0.097 0.000 0.353 0.7667 0.372 0.100 0.000 0.353 0.7833 0.372 0.102 0.000 0.353 0.8000 0.372 0.104 0.000 0.353 0.8167 0.372 0.106 0.000 0.353 0.8333 0.372 0.108 0.000 0.353 0.8500 0.372 0.110 0.000 0.353 0.8667 0.372 0.113 0.000 0.353 0.8833 0.372 0.115 0.000 0.353 0.9000 0.372 0.117 0.000 0.353 0.9167 0.372 0.119 0.000 0.353 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 21 0.9333 0.372 0.121 0.000 0.353 0.9500 0.372 0.124 0.000 0.353 0.9667 0.372 0.126 0.000 0.353 0.9833 0.372 0.128 0.000 0.353 1.0000 0.372 0.130 0.000 0.353 1.0167 0.372 0.132 0.000 0.353 1.0333 0.372 0.134 0.000 0.353 1.0500 0.372 0.137 0.000 0.353 1.0667 0.372 0.139 0.000 0.353 1.0833 0.372 0.141 0.000 0.353 1.1000 0.372 0.143 0.000 0.353 1.1167 0.372 0.145 0.000 0.353 1.1333 0.372 0.147 0.000 0.353 1.1500 0.372 0.150 0.000 0.353 1.1667 0.372 0.152 0.000 0.353 1.1833 0.372 0.154 0.000 0.353 1.2000 0.372 0.156 0.000 0.353 1.2167 0.372 0.158 0.000 0.353 1.2333 0.372 0.160 0.000 0.353 1.2500 0.372 0.163 0.000 0.353 1.2667 0.372 0.165 0.000 0.353 1.2833 0.372 0.167 0.000 0.353 1.3000 0.372 0.169 0.000 0.353 1.3167 0.372 0.171 0.000 0.353 1.3333 0.372 0.174 0.000 0.353 1.3500 0.372 0.176 0.000 0.353 1.3667 0.372 0.178 0.000 0.353 1.3833 0.372 0.180 0.000 0.353 1.4000 0.372 0.182 0.000 0.353 1.4167 0.372 0.184 0.000 0.353 1.4333 0.372 0.187 0.000 0.353 1.4500 0.372 0.189 0.000 0.353 1.4667 0.372 0.191 0.015 0.353 1.4833 0.372 0.193 0.043 0.353 1.5000 0.372 0.195 0.078 0.353 ___________________________________________________________________ ___________________________________________________________________ ANALYSIS RESULTS Stream Protection Duration ______________________________________________________ Predeveloped Landuse Totals for POC #1 Total Pervious Area:5.568 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #1 Total Pervious Area:1.565 Total Impervious Area:4.003 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.245801 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 22 5 year 0.370564 10 year 0.467621 25 year 0.607738 50 year 0.725502 100 year 0.855329 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0 5 year 0 10 year 0 25 year 0 50 year 0 100 year 0 Stream Protection Duration POC #1 The Facility PASSED. Flow(cfs) Predev Mit Percentage Pass/Fail 0.1229 2517 0 0 Pass 0.1290 2123 0 0 Pass 0.1351 1724 0 0 Pass 0.1412 1459 0 0 Pass 0.1472 1218 0 0 Pass 0.1533 1013 0 0 Pass 0.1594 787 0 0 Pass 0.1655 603 0 0 Pass 0.1716 472 0 0 Pass 0.1777 374 0 0 Pass 0.1838 294 0 0 Pass 0.1899 227 0 0 Pass 0.1959 175 0 0 Pass 0.2020 137 0 0 Pass 0.2081 112 0 0 Pass 0.2142 92 0 0 Pass 0.2203 75 0 0 Pass 0.2264 63 0 0 Pass 0.2325 54 0 0 Pass 0.2386 41 0 0 Pass 0.2446 37 0 0 Pass 0.2507 31 0 0 Pass 0.2568 13 0 0 Pass 0.2629 9 0 0 Pass 0.2690 9 0 0 Pass 0.2751 7 0 0 Pass 0.2812 7 0 0 Pass 0.2872 7 0 0 Pass 0.2933 7 0 0 Pass 0.2994 6 0 0 Pass 0.3055 4 0 0 Pass 0.3116 4 0 0 Pass 0.3177 3 0 0 Pass 0.3238 3 0 0 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 23 0.3299 3 0 0 Pass 0.3359 3 0 0 Pass 0.3420 3 0 0 Pass 0.3481 3 0 0 Pass 0.3542 3 0 0 Pass 0.3603 3 0 0 Pass 0.3664 3 0 0 Pass 0.3725 3 0 0 Pass 0.3785 3 0 0 Pass 0.3846 3 0 0 Pass 0.3907 3 0 0 Pass 0.3968 3 0 0 Pass 0.4029 3 0 0 Pass 0.4090 3 0 0 Pass 0.4151 2 0 0 Pass 0.4212 2 0 0 Pass 0.4272 2 0 0 Pass 0.4333 2 0 0 Pass 0.4394 1 0 0 Pass 0.4455 1 0 0 Pass 0.4516 1 0 0 Pass 0.4577 1 0 0 Pass 0.4638 1 0 0 Pass 0.4699 1 0 0 Pass 0.4759 1 0 0 Pass 0.4820 1 0 0 Pass 0.4881 1 0 0 Pass 0.4942 1 0 0 Pass 0.5003 1 0 0 Pass 0.5064 1 0 0 Pass 0.5125 1 0 0 Pass 0.5185 1 0 0 Pass 0.5246 1 0 0 Pass 0.5307 1 0 0 Pass 0.5368 1 0 0 Pass 0.5429 1 0 0 Pass 0.5490 1 0 0 Pass 0.5551 1 0 0 Pass 0.5612 1 0 0 Pass 0.5672 1 0 0 Pass 0.5733 1 0 0 Pass 0.5794 1 0 0 Pass 0.5855 1 0 0 Pass 0.5916 1 0 0 Pass 0.5977 1 0 0 Pass 0.6038 1 0 0 Pass 0.6099 1 0 0 Pass 0.6159 1 0 0 Pass 0.6220 1 0 0 Pass 0.6281 1 0 0 Pass 0.6342 1 0 0 Pass 0.6403 1 0 0 Pass 0.6464 1 0 0 Pass 0.6525 1 0 0 Pass 0.6585 1 0 0 Pass 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 24 0.6646 1 0 0 Pass 0.6707 1 0 0 Pass 0.6768 1 0 0 Pass 0.6829 1 0 0 Pass 0.6890 1 0 0 Pass 0.6951 1 0 0 Pass 0.7012 1 0 0 Pass 0.7072 1 0 0 Pass 0.7133 1 0 0 Pass 0.7194 1 0 0 Pass 0.7255 1 0 0 Pass _____________________________________________________ Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 25 WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name infiltration drawdown calc (BASIN 2 ONLY) Site Name: Centennial Park Site Address: City : Report Date: 10/15/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 MITIGATED LAND USE Pervious Land Use acre C, Lawn, Flat 1.565 Pervious Total 1.565 Impervious Land Use acre ROOF TOPS FLAT 1.463 SIDEWALKS FLAT 0.918 PARKING FLAT 1.622 Impervious Total 4.003 Basin Total 5.568 ________________________________________________________________ Water Quality BMP Flow and Volume for POC #1 On-line facility volume: 0.5288 acre-feet On-line facility target flow: 0.7526 cfs. Adjusted for 15 min: 0.7526 cfs. Off-line facility target flow: 0.425 cfs. Adjusted for 15 min: 0.425 cfs. Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 26 WWHM2012 PROJECT REPORT ___________________________________________________________________ Project Name: Driveway WQ flow Sizing Site Name: Centennial Park Site Address: City : Arlington Report Date: 10/15/2019 Gage : Everett Data Start : 1948/10/01 Data End : 2009/09/30 Precip Scale: 1.20 Version Date: 2018/10/10 Version : 4.2.16 ___________________________________________________________________ PREDEVELOPED LAND USE Name : Basin 1 - North Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat .089 Pervious Total 0.089 Impervious Land Use acre Impervious Total 0 Basin Total 0.089 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater ___________________________________________________________________ Name : Basin 2 â€“ South Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat .128 Pervious Total 0.128 Impervious Land Use acre Impervious Total 0 Basin Total 0.128 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 27 ________________________________________________________________ Element Flows To: Surface Interflow Groundwater _________________________________________________________________ MITIGATED LAND USE Name : Basin 1 â€“ North Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .017 Pervious Total 0.017 Impervious Land Use acre DRIVEWAYS FLAT 0.049 SIDEWALKS FLAT 0.023 Impervious Total 0.072 Basin Total 0.089 _________________________________________________________________ Element Flows To: Surface Interflow Groundwater __________________________________________________________________ Name : Basin 2 â€“ South Driveway Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat .058 Pervious Total 0.058 Impervious Land Use acre DRIVEWAYS FLAT 0.047 SIDEWALKS FLAT 0.023 Impervious Total 0.07 Basin Total 0.128 ___________________________________________________________________ Element Flows To: Surface Interflow Groundwater _____________________________________________________________________________ ANALYSIS RESULTS 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 28 Stream Protection Duration __________________________________________________________________ Predeveloped Landuse Totals for POC #1 â€“ North Driveway Total Pervious Area:0.089 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #1 â€“ North Driveway Total Pervious Area:0.017 Total Impervious Area:0.072 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #1 â€“ North Driveway Return Period Flow(cfs) 2 year 0.040491 5 year 0.055638 10 year 0.066848 25 year 0.082414 50 year 0.095068 100 year 0.108663 Flow Frequency Return Periods for Mitigated. POC #1 â€“ North Driveway Return Period Flow(cfs) 2 year 0.040491 5 year 0.055638 10 year 0.066848 25 year 0.082414 50 year 0.095068 100 year 0.108663 Water Quality BMP Flow and Volume for POC #1 - North Driveway On-line facility volume: 0.0091 acre-feet On-line facility target flow: 0.0136 cfs. Adjusted for 15 min: 0.0136 cfs. Off-line facility target flow: 0.0077 cfs. Adjusted for 15 min: 0.0077 cfs. Stream Protection Duration _________________________________________________________________ Predeveloped Landuse Totals for POC #2 â€“ South Driveway Total Pervious Area:0.128 Total Impervious Area:0 ___________________________________________________________________ Mitigated Landuse Totals for POC #2 â€“ South Driveway Total Pervious Area:0.058 Total Impervious Area:0.07 ___________________________________________________________________ Flow Frequency Return Periods for Predeveloped. POC #2 â€“ South Driveway Return Period Flow(cfs) 2 year 0.004301 5 year 0.006598 10 year 0.008369 25 year 0.010903 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 29 50 year 0.013014 100 year 0.015322 Flow Frequency Return Periods for Mitigated. POC #2 â€“ South Driveway Return Period Flow(cfs) 2 year 0.04476 5 year 0.064193 10 year 0.079057 25 year 0.100253 50 year 0.117892 100 year 0.137198 ___________________________________________________________________ Water Quality BMP Flow and Volume for POC #2 - South Driveway On-line facility volume: 0.0102 acre-feet On-line facility target flow: 0.0129 cfs. Adjusted for 15 min: 0.0129 cfs. Off-line facility target flow: 0.0072 cfs. Adjusted for 15 min: 0.0072 cfs. ___________________________________________________________________ Perlnd and Implnd Changes No changes have been made. ___________________________________________________________________ This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright Â© by : Clear Creek Solutions, Inc. 2005-2019; All Rights Reserved. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 30 Conveyance Sizing The conveyance pipes on the site were checked for the 25-year storm on the site. The table below reflects various pipe diameters, slopes and capacities. Runoff was calculated using 15-minute timesteps in WWHM. In general catch basins immediately connect to infiltration trenches without collecting significant runoff areas, but there are several places where this is not the case. In basin 2A extended runs of piping collecting roof drains from several buildings is needed. Conveyance Capacity 4-inch 6-inch 8-inch 10-inch 12-inch Slope (ft/ft) 0.005 0.13 0.40 0.87 1.55 2.52 0.010 0.19 0.56 1.23 2.20 3.57 0.015 0.23 0.69 1.50 2.69 4.37 0.020 0.27 0.79 1.74 3.11 5.05 0.025 0.30 0.89 1.94 3.47 5.65 0.030 0.33 0.97 2.13 3.81 6.18 0.035 0.36 1.05 2.30 4.11 6.68 0.040 0.38 1.12 2.46 4.39 7.14 0.045 0.40 1.19 2.60 4.66 7.57 0.050 0.43 1.26 2.75 4.91 7.98 0.055 0.45 1.32 2.88 5.15 8.37 0.060 0.47 1.38 3.01 5.38 8.75 0.065 0.49 1.43 3.13 5.60 9.10 0.070 0.50 1.49 3.25 5.81 9.45 0.075 0.52 1.54 3.36 6.02 9.78 0.080 0.54 1.59 3.47 6.21 10.10 0.085 0.56 1.64 3.58 6.40 10.41 0.090 0.57 1.68 3.68 6.59 10.71 0.095 0.59 1.73 3.78 6.77 11.01 0.100 0.60 1.78 3.88 6.95 11.29 Table A-1: Conveyance Capacity Table Basin 2 Overflow Sizing Flow Frequency Predeveloped Inflow to Mitigated Mitigated Flow(cfs) 0501 15m 0701 15m 0801 15m 25 Year = 0.6077 1.8815 0.0000 100 Year = 0.8553 2.3452 0.0000 Two 12â€ overflow pipes are provided from the infiltration trenches, with the minimum slope on either being 0.5% connecting from the site into the City storm system on 67th. The conveyance capacity of one 12â€ pipe at that flow (2.52 cfs) exceeds the 100-year mitigated flow for the site (2.34 cfs). 6â€ Roof Drain Capacity Check 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com Centennial Park 18386.20 March 26, 2020 Drainage Report Appendix A, Page 31 Flow Frequency for 6,000 sf building Flow(cfs) Predeveloped Mitigated 25 Year = 0.0111 0.1350 100 Year = 0.0156 0.1751 6â€ conveyance pipes are shown on the plans for all roof drains around each building. With 6,000 sf of roof area used as a conservative typical condition, the roof drain tightlines will convey the 100-Year storm from each building even if the pipe is set at just 0.5%. The mitigated flow from this area is 0.17 cfs, while the 6â€ pipe can convey 0.40 cfs. Site Basin 2A, Upstream of Infiltration Areas In general catch basins on this site pick up small areas and immediately convey into the large infiltration beds distributed throughout the site, but Site Basin 2A includes a significant portion of the site where infiltration was not used due to infeasibility concerns noted in the geotechnical report. This area is on the easternmost side of the site 1.49 acres and includes buildings K, L and M. Total: 64,929 sf 1.490 ac Roof: 13,884 sf 0.318 ac Sidewalk: 9,069 sf 0.208 ac Parking: 15,666 sf 0.359ac Landscaping: 26,310 sf 0.605ac Flow Frequency Flow(cfs) Predeveloped Mitigated 25 Year = 0.1269 1.2030 100 Year = 0.1784 1.6322 Conveyance pipes in this basin were set at a 1.0% minimum and 8â€ in diameter to properly convey the 25-year design storm into the infiltration trenches. Another large portion includes the narrower site driveway between buildings F, G, and H. Due to tuck under parking running right up alongside the drive isle, adequate separation was not there for infiltration beds, leading to longer runs collection more area. Total: 20,516 sf 0.471 ac Roof: 5,837 sf 0.134 ac Sidewalk: 2,144 sf 0.049 ac Parking: 9,134 sf 0.209 ac Landscaping: 3,488 sf 0.079ac Flow Frequency Flow(cfs) Predeveloped Mitigated 25 Year = 0.0401 0.4425 100 Year = 0.0564 0.5821 The 8â€ pipes being collected flow into the infiltration trenches and will function as expected at 0.5% slopes or more. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph. 425.778.8500 | f. 425.778.5536 www.cgengineering.com CONTRUCTION PLAN REVIEW & INSPECTION FEE WORKSHEET Community & Economic Development Department 18204 59th Avenue NE City of Arlington ï¬ ï¬ Arlington WA 98223 ï¬ (360) 403-3551 This form is to be completed and submitted with Type I , Type II Type III Construction Permit Application. 1) Based on permit type requested (Type I, Type II or Type III), complete the form as follows: ï¬ Type I permits complete all sections. ï¬ Type II permits complete as follows: - Grading Only - Complete Temporary Erosion and Sediment Control (TESC). - Stormwater Drainage Only - Complete the Temporary Erosion and Sediment Control and Stormwater Drainage Section for Public or Private ï¬ Type III permits complete the Temporary Erosion and Sediment Control (TESC). 2) The developer shall enter the quantities shown on the construction drawings into the Construction Calculation Worksheet. This document is used to determine the amount of plan reivew and inspection fees due to the city. 3) Excel will auto-calculate the relevant fields and subtotals throughout the document. Only the 'Quantity' columns should be completed. 4) The summary page calculates the fees due at intake for Civil and Stormwater Drainage construction permits only. This does not include fees for Grading or those required by other departments or agencies. Grading fees are based on Cubic Yard Quantity and shall be calculated at time of permit submittal. Grading fees shall be paid at permit submittal. 5) If an item that is part of your project does not exist in the spreadsheet complete the Write-In-Items section with the item, quantity and associated unit cost. There are a few unit prices that are blank, please complete them accordingly. 6) Inspection fees shall be calculated for Private Development during the review process and shall be paid upon permit issuance. PROJECT COSTS PUBLIC TOTAL PRIVATE TOTAL TOTAL PROJECT COST $ 490,598.13 $ 2,040,287.50 $ 2,530,885.63 OK PLAN REVIEW & INSPECTION FEES PLAN REVIEW & INSPECTION FEE (6% of Project Value) $ - GRADING FEE (4) (Cubic Yard ) $ - Review fees due at time of submittal Total Review Fees Due $ - An Assurance Device such as a Performance Bond or Assignment of Funds needs to be on file with the City of Arlington prior to permit issuance. The Assurance Device shall be 150% of the Construction Calculation Worksheet which are as follows: ï¬ Road and Alley (Public) ï¬ Stormwater Drainage and Grading (Public) ï¬ Utilities (Public) ï¬ Temporary Erosion and Sediment Control (Public and Private) ASSURANCE DEVICE Base Calculation of Performance Device $ 490,598.13 PERFORMANCE DEVICE 150% Amount Due $ 735,897.19 Base Calculation of Maintenance Device $ 490,598.13 MAINTENANCE DEVICE 20% Amount Due $ 98,119.63 1 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET TEMPORARY EROSION & SEDIMENT CONTROL Include Public Improvements & Private Development Description Unit Price Unit Quantity Cost Reference # Backfill & compaction-embankment $ 6.50 CY Check dams $ 78.00 EACH 4 BMP C207 Catch Basin Protection $ 35.50 EACH 15 Crushed surfacing 1 1/4" minus $ 18.00 TON WSDOT 9-03.9(3) Ditching $ 8.00 CY Excavation-bulk $ 3.00 CY Fence, silt $ 2.00 LF 2090 BMP C233 Fence, Temporary (NGPA) $ 2.00 LF Geotextile Fabric $ 2.50 SY Hay Bale Silt Trap $ 0.50 EACH Hydroseeding $ 4,200.00 ACRE BMP C120 Interceptor Swale / Dike $ 1.00 LF 400 Jute Mesh $ 2.00 SY BMP C122 Level Spreader $ 1.75 LF Mulch, by hand, straw, 3" deep $ 3.00 SY BMP C121 Mulch, by machine, straw, 2" deep $ 1.00 SY BMP C121 Piping, temporary, CPP, 6" $ 12.50 LF 105 Piping, temporary, CPP, 8" $ 19.00 LF Piping, temporary, CPP, 12" $ 24.00 LF 30 Plastic covering, 6mm thick, sandbagged $ 3.00 SY BMP C123 Rip Rap, machine placed; slopes $ 50.00 CY WSDOT 9-13.1(2) Rock Construction Entrance, 50'x15'x1' $ 1,800.00 EACH BMP C105 Rock Construction Entrance, 100'x15'x1' $ 3,600.00 EACH 1 BMP C105 Sediment pond riser assembly $ 3,050.00 EACH 1 BMP C241 Sediment trap, 5' high berm $ 21.00 LF 422 BMP C240 Sed. trap, 5' high, riprapped spillway berm section $ 79.00 LF 108 BMP C240 Seeding, by hand $ 1.00 SY BMP C120 Sodding, 1" deep, level ground $ 8.00 SY BMP C120 Sodding, 1" deep, sloped ground $ 9.50 SY BMP C120 TESC Supervisor $ 84.00 HR 40 Water truck, dust control $ 130.00 HR 40 BMP C140 WRITE-IN-ITEMS $ - $ - $ - SUBTOTAL (TESC Only): MOBILIZATION 10%: CONTINGENCY 15%: $ - TOTAL: $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET GENERAL ITEMS Public Improvements Description Unit Price Unit Quantity Cost Backfill & Compaction- embankment $ 8.00 CY $ - Backfill & Compaction- trench $ 11.00 CY 14 $ 154.00 Clear/Remove Brush, by hand (acre) $ 2,363.00 ACRE $ - Bollards - fixed $ 325.00 EACH $ - Bollards - removable $ 600.00 EACH $ - Clearing/Grubbing/Tree Removal $ 6,000.00 ACRE $ - Excavation - bulk $ 2.50 CY $ - Excavation - Trench $ 5.00 CY 27 $ 135.00 Fencing, cedar, 6' high $ 25.00 LF $ - Fencing, chain link, 4' $ 19.50 LF $ - Fencing, chain link, vinyl coated, 6' high $ 18.00 LF $ - Fencing, chain link, gate, vinyl coated, 20' $ 1,563.00 EACH $ - Fencing, split rail, 3' high $ 14.00 LF $ - Fill & compact - common barrow $ 27.00 CY $ - Fill & compact - gravel base $ 30.00 CY $ - Fill & compact - screened topsoil $ 45.00 CY $ - Gabion, 12" deep, stone filled mesh $ 62.00 SY $ - Gabion, 18" deep, stone filled mesh $ 86.00 SY $ - Gabion, 36" deep, stone filled mesh $ 152.00 SY $ - Grading, fine, by hand $ 2.00 SY 500 $ 1,000.00 Grading, fine, with grader $ 1.25 SY 1000 $ 1,250.00 Guard Post $ 90.00 EACH $ - Monuments $ 104.00 EACH $ - Sensitive Areas Sign $ 20.00 EACH $ - Sodding, 1" deep, sloped ground $ 10.00 SY $ - Topsoil Type A (imported) $ 30.00 CY $ - Traffic control crew ( 2 flaggers ) $ 98.00 HR $ - Trail, 4" chipped wood $ 9.00 SY $ - Trail, 4" crushed cinder $ 10.00 SY $ - Trail, 4" top course $ 9.50 SY $ - Wall, retaining, concrete $ 66.00 SF $ - Wall, rockery $ 13.00 SF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 2,539.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET IMPROVEMENT Public Improvements Description Unit Price Unit Quantity Cost AC Grinding, 4' wide machine < 1000sy $ 35.00 SY $ - AC Grinding, 4' wide machine 1000-2000sy $ 8.50 SY $ - AC Grinding, 4' wide machine > 2000sy $ 2.50 SY $ - AC Removal/Disposal/Repair $ 60.00 SY $ - Barricade, Type I $ 36.00 LF $ - Barricade Type II $ 25.00 LF $ - Barricade, Type III ( Permanent ) $ 55.00 LF $ - Conduit, 2" $ 5.00 LF $ - Curb & Gutter, rolled $ 20.00 LF $ - Curb & Gutter, vertical $ 15.00 LF 667 $ 10,005.00 Curb and Gutter, demolition and disposal $ 20.00 LF 110 $ 2,200.00 Curb, extruded asphalt $ 5.00 LF $ - Curb, extruded concrete $ 4.50 LF $ - Guard Rail $ 30.00 LF $ - Sawcut, asphalt, 3" depth $ 3.50 LF 667 $ 2,334.50 Sawcut, concrete, per 1" depth $ 3.00 LF $ - Sealant, asphalt $ 2.00 LF $ - Shoulder, gravel, 4" thick $ 11.00 SY $ - Sidewalk, 4" thick $ 40.00 SY $ - Sidewalk, 4" thick, demolition and disposal $ 36.00 SY $ - Sidewalk, 6" thick $ 45.00 SY 593 $ 26,685.00 Sidewalk, 6" thick, demolition and disposal $ 45.00 SY $ - Signs $ - LS $ - Sign, Handicap $ 100.00 EACH $ - Striping, per stall $ 7.50 EACH $ - Street Light System $ - LS $ - Traffic Signal $ - LS $ - Traffic Signal Modification $ - LS $ - Striping, thermoplastic, ( for crosswalk ) $ 3.50 SF $ - Striping, 4" reflectorized line $ 0.40 LF $ - AC Patching/Trenching Restoration $ 100.00 TON $ - Controlled Density Fill (CDF) $ 90.00 CY $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 41,224.50 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET SURFACING/PAVEMENT Public Improvements Description Unit Price Unit Quantity Cost Asphalt Overlay, 1.5" AC $ 12.00 SY $ - Asphalt Overlay, 2" AC $ 15.00 SY $ - Asphalt Road 2", First 2500 SY $ 10.00 SY $ - Asphalt Road 2", Qty. over 2500SY $ 9.00 SY $ - Asphalt Road 3", First 2500 SY $ 15.00 SY $ - Asphalt Road 3", Qty. over 2500 SY $ 13.00 SY $ - Asphalt Road 5", First 2500 SY $ 22.00 SY $ - Asphalt Road 5", Qty. Over 2500 SY $ 22.00 SY $ - Asphalt Road 6", First 2500 SY $ 25.00 SY $ - Asphalt Road 6", Qty. Over 2500 SY $ 24.00 SY $ - Asphalt Treated Base, 4" thick $ 14.00 SY $ - Gravel Base Course 2" $ 7.50 SY $ - Gravel Base Course 4" $ 15.00 SY $ - Gravel Base Course 6" $ 22.50 SY $ - Gravel Road, 4" rock, First 2500 SY $ 15.00 SY $ - Gravel Road, 4" rock, Qty. over 2500 SY $ 11.00 SY $ - Concrete Road, 5", no base, over 2500 SY $ 22.00 SY $ - Concrete Road, 6", no base, over 2500 SY $ 32.00 SY $ - Thickened Edge $ 11.00 LF $ - WRITE-IN-ITEMS Gravel Base Course 9" $ 33.75 SY $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET WATER SYSTEM Public Improvements Description Unit Price Unit Quantity Cost Blowoff $ 1,800.00 EACH $ - Connection to Existing Water Main $ 2,000.00 EACH 1 $ 2,000.00 Ductile Iron Watermain, CL 52, 6 Inch Dia $ 65.00 LF 152 $ 9,880.00 Ductile Iron Watermain, CL 52, 8 Inch Dia $ 85.00 LF $ - Ductile Iron Watermain, CL 52, 10 Inch Dia $ 103.00 LF $ - Ductile Iron Watermain, CL 52, 12 Inch Dia. $ 125.00 LF 1587 $ 198,375.00 Gate Valve, 6 inch Dia $ 250.00 EACH 24 $ 6,000.00 Gate Valve, 8 Inch Dia $ 380.00 EACH $ - Gate Valve, 10 Inch Dia $ 425.00 EACH $ - Gate Valve, 12 Inch Dia $ 500.00 EACH $ - Fire Hydrant Assembly, with Guard Posts $ 3,000.00 EACH $ - Fire Hydrant Assembly, without Guard Posts $ 2,500.00 EACH 8 $ 20,000.00 Air-Vac, 8 Inch Dia $ 6,000.00 EACH $ - Air-Vac,10 Inch Dia $ 7,500.00 EACH $ - Air-Vac, 12 Inch Dia $ 12,000.00 EACH $ - Pressure Reducing Valve Assembly, 8 In. Dia $ 3,800.00 EACH $ - Pressure Reducing Valve Assembly, 10 In. Dia $ 4,200.00 EACH $ - Pressure Reducing Valve Assembly, 12 In. Dia $ 5,000.00 EACH $ - Valve Marker Post $ 350.00 EACH $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - Subtotal $ 236,255.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET SANITARY SEWER Public Improvements Description Unit Price Unit Quantity Cost Connection to Existing Sewer Main $ - EACH $ - Clean Outs $ 500.00 EACH $ - Grease Interceptor, 500 gallon $ 6,000.00 EACH $ - Grease Interceptor, 1000 gallon $ 10,000.00 EACH $ - Grease Interceptor, 1500 gallon $ 15,000.00 EACH $ - Side Sewer Pipe, PVC. 4 Inch Dia $ 8.00 LF $ - Side Sewer Pipe, PVC. 6 Inch Dia $ 12.00 LF $ - Sewer Pipe, PVC, 8 inch Dia $ 33.00 LF 2100 $ 69,300.00 Sewer Pipe, PVC, 12 Inch Dia $ 41.00 LF $ - Sewer Pipe, PVC, _10_ Inch Dia $ 38.00 LF $ - Lift Station (Entire System) $ - LS $ - Manhole, 48 Inch Dia $ 3,000.00 EACH 10 $ 30,000.00 for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 54 Inch Dia $ 3,500.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 60 Inch Dia $ 3,700.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 72 Inch Dia $ 4,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Manhole, 96 Inch Dia $ 5,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Outside Drop $ - LS $ - Inside Drop $ - LS $ - Pipe, C-900 $ 90.00 LF $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 99,300.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET LANDSCAPING & VEGETATION Include Public Improvements & Priva Description Unit Price Unit Quantity Cost Street Trees $ 500.00 EACH 14 $ 7,000.00 Root Barrier $ 150.00 EACH 14 $ 2,100.00 Median Landscaping NA LS NA Right-of-Way Landscaping $ 3,248.00 sf 1.25 $ 4,060.00 Wetland Landscaping $ - LS $ - Private Landscaping $ 375,000.00 LS $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 13,160.00 (INCLUDES GENERAL, STREET, SURFACING, WATER, SEWER, PUBLIC LANDSCAPING) SUBTOTAL $ 392,478.50 MOBILIZATION 10%: $ 39,247.85 CONTINGENCY 15%: $ 58,871.78 GRANDTOTAL: $ 490,598.13 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STORMWATER DRAINAGE Public Private Public Improvements Private Development Description Unit Price Unit Quantity Cost Quantity Cost Access Road, Retention / Detention $ 26.00 SY $ - $ - * (CBs include frame and lid) Beehive $ 90.00 EACH $ - $ - CB Type I $ 1,650.00 EACH $ - $ - CB Type IL $ 1,850.00 EACH $ - 19 $ 35,150.00 CB Type II, 48" Dia $ 2,550.00 EACH $ - $ - for additional depth over 4' $ 650.00 FT $ - $ - CB Type II, 54" Dia $ 2,700.00 EACH $ - $ - for additional depth over 4' $ 600.00 FT $ - $ - CB Type II, 60" Dia $ 2,900.00 EACH $ - $ - for additional depth over 4' $ 750.00 FT $ - $ - CB Type II, 72" Dia $ 4,000.00 EACH $ - $ - for additional depth over 4' $ 900.00 FT $ - $ - Through-curb Inlet Framework (Add) $ 550.00 EACH $ - $ - Cleanout, PVC, 4" $ 200.00 EACH $ - $ - Cleanout, PVC, 6" $ 250.00 EACH $ - $ - Cleanout, PVC, 8" $ 300.00 EACH $ - $ - Culvert, Box __ ft x __ ft $ - LS $ - $ - Culvert, PVC, 4" $ 12.00 LF $ - 5996 $ 71,952.00 Culvert, PVC, 6" $ 17.00 LF $ - 12,059 $ 205,003.00 Culvert, PVC, 8" $ 19.00 LF $ - $ - Culvert, PVC, 10" $ 25.00 LF $ - $ - Culvert, PVC, 12" $ 30.00 LF $ - 453 $ 13,590.00 Culvert, CMP, 8" $ 23.00 LF $ - $ - Culvert, CMP, 12" $ 35.00 LF $ - $ - Culvert, CMP, 15" $ 42.00 LF $ - $ - Culvert, CMP, 18" $ 47.00 LF $ - $ - Culvert, CMP, 24" $ 69.00 LF $ - $ - Culvert, CMP, 30" $ 100.00 LF $ - $ - Culvert, CMP, 36" $ 150.00 LF $ - $ - Culvert, CMP, 48" $ 194.00 LF $ - $ - Culvert, CMP, 60" $ 310.00 LF $ - $ - Culvert, CMP, 72" $ 400.00 LF $ - $ - Culvert, Concrete, 8" $ 36.00 LF $ - $ - Culvert, Concrete, 12" $ 43.00 LF $ - $ - Culvert, Concrete, 15" $ 52.00 LF $ - $ - Culvert, Concrete, 18" $ 55.00 LF $ - $ - Culvert, Concrete, 24" $ 85.00 LF $ - $ - Culvert, Concrete, 30" $ 136.00 LF $ - $ - Culvert, Concrete, 36" $ 165.00 LF $ - $ - Culvert, Concrete, 42" $ 196.00 LF $ - $ - Culvert, Concrete, 48" $ 210.00 LF $ - $ - Culvert, CPP, 6" $ 16.00 LF $ - $ - Culvert, CPP, 8" $ 22.00 LF $ - $ - Culvert, CPP, 12" $ 28.00 LF $ - $ - Culvert, CPP, 15" $ 34.00 LF $ - $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Culvert, CPP, 18" $ 39.00 LF $ - $ - Culvert, CPP, 24" $ 49.00 LF $ - $ - Culvert, CPP, 30" $ 62.00 LF $ - $ - Culvert, CPP, 36" $ 69.00 LF $ - $ - Ditching $ 12.00 CY $ - $ - Flow Dispersal Trench (1,436 base+) $ 40.00 LF $ - $ - French Drain (3' depth) $ 39.00 LF $ - $ - Geotextile, laid in trench, polypropylene $ 5.00 SY $ - 4623 $ 23,115.00 Infiltration pond testing $ 125.00 HR $ - $ - Mid-tank Access Riser, 48" dia, 6' deep $ 2,025.00 EACH $ - $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - $ - Pipe, C900 $ 90.00 LF $ - $ - Pond Overflow Spillway $ 18.00 SY $ - $ - Restrictor/Oil Separator, 12" $ 1,500.00 EACH $ - $ - Restrictor/Oil Separator, 15" $ 1,550.00 EACH $ - $ - Restrictor/Oil Separator, 18" $ 1,680.00 EACH $ - $ - Riprap, placed $ 52.00 CY $ - $ - Tank End Reducer (36" Dia) $ 1,280.00 EACH $ - $ - Thru-Inlet at CB $ 150.00 EACH $ - $ - Trash Rack, 12" $ 320.00 EACH $ - $ - Trash Rack, 15" $ 325.00 EACH $ - $ - Trash Rack, 18" $ 350.00 EACH $ - $ - Trash Rack, 21" $ 375.00 EACH $ - $ - WRITE-IN-ITEMS 18" Concrete Yard Drain $ 250.00 LF $ - 21 $ 5,250.00 Culvert, PVC, 24" $ 60.00 LF $ - 260 $ 15,600.00 LF $ - $ - LF $ - $ - SUBTOTAL: $ - $ 369,660.00 MOBILIZATION 10%: $ - CONTINGENCY 15%: $ - TOTAL: $ - $ 369,660.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Rev 7/2017 Geotextile syardage R/F pipe co 270 3 90 20 1800 3 60 300 180 3 60 20 1200 3 60 147 150 3 50 20 1000 3 60 305 180 3 60 40 2400 3 120 309 165 3 55 30 1650 3 90 339 180 3 60 20 1200 3 60 316 330 3 110 30 3300 3 90 305 60 3 20 20 400 3 60 306 180 3 60 30 1800 3 90 483 525 3 175 20 3500 3 60 384 240 3 80 40 3200 3 120 384 120 3 40 20 800 3 60 385 630 3 210 20 4200 3 60 345 150 3 50 30 1500 3 90 340 420 3 140 20 2800 3 60 339 210 3 70 30 2100 3 90 120 3 40 30 1200 3 90 270 3 90 20 1800 3 60 4380 35850 1380 4987 3983.333 6520 sf 41610 535 sy 4623.333 606 infil trench pipe count 343 pipe count pipe lengthpipe count pipe width total pipe length 12059 101 2 80 2 10 180 102 2 50 4 10 140 102.1 2 40 12 10 200 103 4 50 2 30 260 104 3 45 2 20 175 105 2 50 2 10 120 106 3 100 2 20 340 106.1 2 10 20 106.2 3 50 2 20 190 107 2 165 2 30 390 108 4 70 2 30 340 108.1 2 30 2 20 100 109 2 200 2 10 420 110 2 40 2 20 120 111 3 130 2 10 410 112 2 60 2 20 160 112.1 3 30 2 30 150 113 4 80 2 10 340 4055 perf 6" ount wall 4" pvc 1009 4" perf pipe 5996 4" perf pvc 6" pipe for roof 6" pipe from roof to cb 6"pipe between trenches 6" pipe between cbs CONTRUCTION PLAN REVIEW & INSPECTION FEE WORKSHEET Community & Economic Development Department 18204 59th Avenue NE City of Arlington ï¬ ï¬ Arlington WA 98223 ï¬ (360) 403-3551 This form is to be completed and submitted with Type I , Type II Type III Construction Permit Application. 1) Based on permit type requested (Type I, Type II or Type III), complete the form as follows: ï¬ Type I permits complete all sections. ï¬ Type II permits complete as follows: - Grading Only - Complete Temporary Erosion and Sediment Control (TESC). - Stormwater Drainage Only - Complete the Temporary Erosion and Sediment Control and Stormwater Drainage Section for Public or Private ï¬ Type III permits complete the Temporary Erosion and Sediment Control (TESC). 2) The developer shall enter the quantities shown on the construction drawings into the Construction Calculation Worksheet. This document is used to determine the amount of plan reivew and inspection fees due to the city. 3) Excel will auto-calculate the relevant fields and subtotals throughout the document. Only the 'Quantity' columns should be completed. 4) The summary page calculates the fees due at intake for Civil and Stormwater Drainage construction permits only. This does not include fees for Grading or those required by other departments or agencies. Grading fees are based on Cubic Yard Quantity and shall be calculated at time of permit submittal. Grading fees shall be paid at permit submittal. 5) If an item that is part of your project does not exist in the spreadsheet complete the Write-In-Items section with the item, quantity and associated unit cost. There are a few unit prices that are blank, please complete them accordingly. 6) Inspection fees shall be calculated for Private Development during the review process and shall be paid upon permit issuance. PROJECT COSTS PUBLIC TOTAL PRIVATE TOTAL TOTAL PROJECT COST $ 490,598.13 $ 2,040,287.50 $ 2,530,885.63 OK PLAN REVIEW & INSPECTION FEES PLAN REVIEW & INSPECTION FEE (6% of Project Value) $ - GRADING FEE (4) (Cubic Yard ) $ - Review fees due at time of submittal Total Review Fees Due $ - An Assurance Device such as a Performance Bond or Assignment of Funds needs to be on file with the City of Arlington prior to permit issuance. The Assurance Device shall be 150% of the Construction Calculation Worksheet which are as follows: ï¬ Road and Alley (Public) ï¬ Stormwater Drainage and Grading (Public) ï¬ Utilities (Public) ï¬ Temporary Erosion and Sediment Control (Public and Private) ASSURANCE DEVICE Base Calculation of Performance Device $ 490,598.13 PERFORMANCE DEVICE 150% Amount Due $ 735,897.19 Base Calculation of Maintenance Device $ 490,598.13 MAINTENANCE DEVICE 20% Amount Due $ 98,119.63 1 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET TEMPORARY EROSION & SEDIMENT CONTROL Include Public Improvements & Private Development Description Unit Price Unit Quantity Cost Reference # Backfill & compaction-embankment $ 6.50 CY $ - Check dams $ 78.00 EACH 4 BMP C207 Catch Basin Protection $ 35.50 EACH 15 Crushed surfacing 1 1/4" minus $ 18.00 TON WSDOT 9-03.9(3) Ditching $ 8.00 CY Excavation-bulk $ 3.00 CY Fence, silt $ 2.00 LF 2090 BMP C233 Fence, Temporary (NGPA) $ 2.00 LF Geotextile Fabric $ 2.50 SY Hay Bale Silt Trap $ 0.50 EACH Hydroseeding $ 4,200.00 ACRE BMP C120 Interceptor Swale / Dike $ 1.00 LF 400 Jute Mesh $ 2.00 SY BMP C122 Level Spreader $ 1.75 LF Mulch, by hand, straw, 3" deep $ 3.00 SY BMP C121 Mulch, by machine, straw, 2" deep $ 1.00 SY BMP C121 Piping, temporary, CPP, 6" $ 12.50 LF 105 Piping, temporary, CPP, 8" $ 19.00 LF Piping, temporary, CPP, 12" $ 24.00 LF 30 Plastic covering, 6mm thick, sandbagged $ 3.00 SY BMP C123 Rip Rap, machine placed; slopes $ 50.00 CY WSDOT 9-13.1(2) Rock Construction Entrance, 50'x15'x1' $ 1,800.00 EACH BMP C105 Rock Construction Entrance, 100'x15'x1' $ 3,600.00 EACH 1 BMP C105 Sediment pond riser assembly $ 3,050.00 EACH 1 BMP C241 Sediment trap, 5' high berm $ 21.00 LF 422 BMP C240 Sed. trap, 5' high, riprapped spillway berm section $ 79.00 LF 108 BMP C240 Seeding, by hand $ 1.00 SY BMP C120 Sodding, 1" deep, level ground $ 8.00 SY BMP C120 Sodding, 1" deep, sloped ground $ 9.50 SY BMP C120 TESC Supervisor $ 84.00 HR 40 Water truck, dust control $ 130.00 HR 40 BMP C140 WRITE-IN-ITEMS $ - $ - $ - SUBTOTAL (TESC Only): MOBILIZATION 10%: CONTINGENCY 15%: TOTAL: $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET GENERAL ITEMS Public Improvements Description Unit Price Unit Quantity Cost Backfill & Compaction- embankment $ 8.00 CY $ - Backfill & Compaction- trench $ 11.00 CY 14 $ 154.00 Clear/Remove Brush, by hand (acre) $ 2,363.00 ACRE $ - Bollards - fixed $ 325.00 EACH $ - Bollards - removable $ 600.00 EACH $ - Clearing/Grubbing/Tree Removal $ 6,000.00 ACRE $ - Excavation - bulk $ 2.50 CY $ - Excavation - Trench $ 5.00 CY 27 $ 135.00 Fencing, cedar, 6' high $ 25.00 LF $ - Fencing, chain link, 4' $ 19.50 LF $ - Fencing, chain link, vinyl coated, 6' high $ 18.00 LF $ - Fencing, chain link, gate, vinyl coated, 20' $ 1,563.00 EACH $ - Fencing, split rail, 3' high $ 14.00 LF $ - Fill & compact - common barrow $ 27.00 CY $ - Fill & compact - gravel base $ 30.00 CY $ - Fill & compact - screened topsoil $ 45.00 CY $ - Gabion, 12" deep, stone filled mesh $ 62.00 SY $ - Gabion, 18" deep, stone filled mesh $ 86.00 SY $ - Gabion, 36" deep, stone filled mesh $ 152.00 SY $ - Grading, fine, by hand $ 2.00 SY 500 $ 1,000.00 Grading, fine, with grader $ 1.25 SY 1000 $ 1,250.00 Guard Post $ 90.00 EACH $ - Monuments $ 104.00 EACH $ - Sensitive Areas Sign $ 20.00 EACH $ - Sodding, 1" deep, sloped ground $ 10.00 SY $ - Topsoil Type A (imported) $ 30.00 CY $ - Traffic control crew ( 2 flaggers ) $ 98.00 HR $ - Trail, 4" chipped wood $ 9.00 SY $ - Trail, 4" crushed cinder $ 10.00 SY $ - Trail, 4" top course $ 9.50 SY $ - Wall, retaining, concrete $ 66.00 SF $ - Wall, rockery $ 13.00 SF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 2,539.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET IMPROVEMENT Public Improvements Description Unit Price Unit Quantity Cost AC Grinding, 4' wide machine < 1000sy $ 35.00 SY $ - AC Grinding, 4' wide machine 1000-2000sy $ 8.50 SY $ - AC Grinding, 4' wide machine > 2000sy $ 2.50 SY $ - AC Removal/Disposal/Repair $ 60.00 SY $ - Barricade, Type I $ 36.00 LF $ - Barricade Type II $ 25.00 LF $ - Barricade, Type III ( Permanent ) $ 55.00 LF $ - Conduit, 2" $ 5.00 LF $ - Curb & Gutter, rolled $ 20.00 LF $ - Curb & Gutter, vertical $ 15.00 LF 667 $ 10,005.00 Curb and Gutter, demolition and disposal $ 20.00 LF 110 $ 2,200.00 Curb, extruded asphalt $ 5.00 LF $ - Curb, extruded concrete $ 4.50 LF $ - Guard Rail $ 30.00 LF $ - Sawcut, asphalt, 3" depth $ 3.50 LF 667 $ 2,334.50 Sawcut, concrete, per 1" depth $ 3.00 LF $ - Sealant, asphalt $ 2.00 LF $ - Shoulder, gravel, 4" thick $ 11.00 SY $ - Sidewalk, 4" thick $ 40.00 SY $ - Sidewalk, 4" thick, demolition and disposal $ 36.00 SY $ - Sidewalk, 6" thick $ 45.00 SY 593 $ 26,685.00 Sidewalk, 6" thick, demolition and disposal $ 45.00 SY $ - Signs $ - LS $ - Sign, Handicap $ 100.00 EACH $ - Striping, per stall $ 7.50 EACH $ - Street Light System $ - LS $ - Traffic Signal $ - LS $ - Traffic Signal Modification $ - LS $ - Striping, thermoplastic, ( for crosswalk ) $ 3.50 SF $ - Striping, 4" reflectorized line $ 0.40 LF $ - AC Patching/Trenching Restoration $ 100.00 TON $ - Controlled Density Fill (CDF) $ 90.00 CY $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 41,224.50 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET SURFACING/PAVEMENT Public Improvements Description Unit Price Unit Quantity Cost Asphalt Overlay, 1.5" AC $ 12.00 SY $ - Asphalt Overlay, 2" AC $ 15.00 SY $ - Asphalt Road 2", First 2500 SY $ 10.00 SY $ - Asphalt Road 2", Qty. over 2500SY $ 9.00 SY $ - Asphalt Road 3", First 2500 SY $ 15.00 SY $ - Asphalt Road 3", Qty. over 2500 SY $ 13.00 SY $ - Asphalt Road 5", First 2500 SY $ 22.00 SY $ - Asphalt Road 5", Qty. Over 2500 SY $ 22.00 SY $ - Asphalt Road 6", First 2500 SY $ 25.00 SY $ - Asphalt Road 6", Qty. Over 2500 SY $ 24.00 SY $ - Asphalt Treated Base, 4" thick $ 14.00 SY $ - Gravel Base Course 2" $ 7.50 SY $ - Gravel Base Course 4" $ 15.00 SY $ - Gravel Base Course 6" $ 22.50 SY $ - Gravel Road, 4" rock, First 2500 SY $ 15.00 SY $ - Gravel Road, 4" rock, Qty. over 2500 SY $ 11.00 SY $ - Concrete Road, 5", no base, over 2500 SY $ 22.00 SY $ - Concrete Road, 6", no base, over 2500 SY $ 32.00 SY $ - Thickened Edge $ 11.00 LF $ - WRITE-IN-ITEMS Gravel Base Course 9" $ 33.75 SY $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET WATER SYSTEM Public Improvements Description Unit Price Unit Quantity Cost Blowoff $ 1,800.00 EACH $ - Connection to Existing Water Main $ 2,000.00 EACH 1 $ 2,000.00 Ductile Iron Watermain, CL 52, 6 Inch Dia $ 65.00 LF 152 $ 9,880.00 Ductile Iron Watermain, CL 52, 8 Inch Dia $ 85.00 LF $ - Ductile Iron Watermain, CL 52, 10 Inch Dia $ 103.00 LF $ - Ductile Iron Watermain, CL 52, 12 Inch Dia. $ 125.00 LF 1587 $ 198,375.00 Gate Valve, 6 inch Dia $ 250.00 EACH 24 $ 6,000.00 Gate Valve, 8 Inch Dia $ 380.00 EACH $ - Gate Valve, 10 Inch Dia $ 425.00 EACH $ - Gate Valve, 12 Inch Dia $ 500.00 EACH $ - Fire Hydrant Assembly, with Guard Posts $ 3,000.00 EACH $ - Fire Hydrant Assembly, without Guard Posts $ 2,500.00 EACH 8 $ 20,000.00 Air-Vac, 8 Inch Dia $ 6,000.00 EACH $ - Air-Vac,10 Inch Dia $ 7,500.00 EACH $ - Air-Vac, 12 Inch Dia $ 12,000.00 EACH $ - Pressure Reducing Valve Assembly, 8 In. Dia $ 3,800.00 EACH $ - Pressure Reducing Valve Assembly, 10 In. Dia $ 4,200.00 EACH $ - Pressure Reducing Valve Assembly, 12 In. Dia $ 5,000.00 EACH $ - Valve Marker Post $ 350.00 EACH $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - Subtotal $ 236,255.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET SANITARY SEWER Public Improvements Description Unit Price Unit Quantity Cost Connection to Existing Sewer Main $ - EACH $ - Clean Outs $ 500.00 EACH $ - Grease Interceptor, 500 gallon $ 6,000.00 EACH $ - Grease Interceptor, 1000 gallon $ 10,000.00 EACH $ - Grease Interceptor, 1500 gallon $ 15,000.00 EACH $ - Side Sewer Pipe, PVC. 4 Inch Dia $ 8.00 LF $ - Side Sewer Pipe, PVC. 6 Inch Dia $ 12.00 LF $ - Sewer Pipe, PVC, 8 inch Dia $ 33.00 LF 2100 $ 69,300.00 Sewer Pipe, PVC, 12 Inch Dia $ 41.00 LF $ - Sewer Pipe, PVC, _10_ Inch Dia $ 38.00 LF $ - Lift Station (Entire System) $ - LS $ - Manhole, 48 Inch Dia $ 3,000.00 EACH 10 $ 30,000.00 for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 54 Inch Dia $ 3,500.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 60 Inch Dia $ 3,700.00 EACH $ - for additional depth over 4 feet/per foot $ 532.00 FEET $ - Manhole, 72 Inch Dia $ 4,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Manhole, 96 Inch Dia $ 5,000.00 EACH $ - for additional depth over 4 feet/per foot $ 625.00 FEET $ - Outside Drop $ - LS $ - Inside Drop $ - LS $ - Pipe, C-900 $ 90.00 LF $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 99,300.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET LANDSCAPING & VEGETATION Include Public Improvements & Priva Description Unit Price Unit Quantity Cost Street Trees $ 500.00 EACH 14 $ 7,000.00 Root Barrier $ 150.00 EACH 14 $ 2,100.00 Median Landscaping NA LS NA Right-of-Way Landscaping $ 3,248.00 sf 1.25 $ 4,060.00 Wetland Landscaping $ - LS $ - Private Landscaping $ 375,000.00 LS $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ 13,160.00 (INCLUDES GENERAL, STREET, SURFACING, WATER, SEWER, PUBLIC LANDSCAPING) SUBTOTAL $ 392,478.50 MOBILIZATION 10%: $ 39,247.85 CONTINGENCY 15%: $ 58,871.78 GRANDTOTAL: $ 490,598.13 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STORMWATER DRAINAGE Public Private Public Improvements Private Development Description Unit Price Unit Quantity Cost Quantity Cost Access Road, Retention / Detention $ 26.00 SY $ - $ - * (CBs include frame and lid) Beehive $ 90.00 EACH $ - $ - CB Type I $ 1,650.00 EACH $ - $ - CB Type IL $ 1,850.00 EACH $ - 19 $ 35,150.00 CB Type II, 48" Dia $ 2,550.00 EACH $ - $ - for additional depth over 4' $ 650.00 FT $ - $ - CB Type II, 54" Dia $ 2,700.00 EACH $ - $ - for additional depth over 4' $ 600.00 FT $ - $ - CB Type II, 60" Dia $ 2,900.00 EACH $ - $ - for additional depth over 4' $ 750.00 FT $ - $ - CB Type II, 72" Dia $ 4,000.00 EACH $ - $ - for additional depth over 4' $ 900.00 FT $ - $ - Through-curb Inlet Framework (Add) $ 550.00 EACH $ - $ - Cleanout, PVC, 4" $ 200.00 EACH $ - $ - Cleanout, PVC, 6" $ 250.00 EACH $ - $ - Cleanout, PVC, 8" $ 300.00 EACH $ - $ - Culvert, Box __ ft x __ ft $ - LS $ - $ - Culvert, PVC, 4" $ 12.00 LF $ - 5996 $ 71,952.00 Culvert, PVC, 6" $ 17.00 LF $ - 12,059 $ 205,003.00 Culvert, PVC, 8" $ 19.00 LF $ - $ - Culvert, PVC, 10" $ 25.00 LF $ - $ - Culvert, PVC, 12" $ 30.00 LF $ - 453 $ 13,590.00 Culvert, CMP, 8" $ 23.00 LF $ - $ - Culvert, CMP, 12" $ 35.00 LF $ - $ - Culvert, CMP, 15" $ 42.00 LF $ - $ - Culvert, CMP, 18" $ 47.00 LF $ - $ - Culvert, CMP, 24" $ 69.00 LF $ - $ - Culvert, CMP, 30" $ 100.00 LF $ - $ - Culvert, CMP, 36" $ 150.00 LF $ - $ - Culvert, CMP, 48" $ 194.00 LF $ - $ - Culvert, CMP, 60" $ 310.00 LF $ - $ - Culvert, CMP, 72" $ 400.00 LF $ - $ - Culvert, Concrete, 8" $ 36.00 LF $ - $ - Culvert, Concrete, 12" $ 43.00 LF $ - $ - Culvert, Concrete, 15" $ 52.00 LF $ - $ - Culvert, Concrete, 18" $ 55.00 LF $ - $ - Culvert, Concrete, 24" $ 85.00 LF $ - $ - Culvert, Concrete, 30" $ 136.00 LF $ - $ - Culvert, Concrete, 36" $ 165.00 LF $ - $ - Culvert, Concrete, 42" $ 196.00 LF $ - $ - Culvert, Concrete, 48" $ 210.00 LF $ - $ - Culvert, CPP, 6" $ 16.00 LF $ - $ - Culvert, CPP, 8" $ 22.00 LF $ - $ - Culvert, CPP, 12" $ 28.00 LF $ - $ - Culvert, CPP, 15" $ 34.00 LF $ - $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Culvert, CPP, 18" $ 39.00 LF $ - $ - Culvert, CPP, 24" $ 49.00 LF $ - $ - Culvert, CPP, 30" $ 62.00 LF $ - $ - Culvert, CPP, 36" $ 69.00 LF $ - $ - Ditching $ 12.00 CY $ - $ - Flow Dispersal Trench (1,436 base+) $ 40.00 LF $ - $ - French Drain (3' depth) $ 39.00 LF $ - $ - Geotextile, laid in trench, polypropylene $ 5.00 SY $ - 4623 $ 23,115.00 Infiltration pond testing $ 125.00 HR $ - $ - Mid-tank Access Riser, 48" dia, 6' deep $ 2,025.00 EACH $ - $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - $ - Pipe, C900 $ 90.00 LF $ - $ - Pond Overflow Spillway $ 18.00 SY $ - $ - Restrictor/Oil Separator, 12" $ 1,500.00 EACH $ - $ - Restrictor/Oil Separator, 15" $ 1,550.00 EACH $ - $ - Restrictor/Oil Separator, 18" $ 1,680.00 EACH $ - $ - Riprap, placed $ 52.00 CY $ - $ - Tank End Reducer (36" Dia) $ 1,280.00 EACH $ - $ - Thru-Inlet at CB $ 150.00 EACH $ - $ - Trash Rack, 12" $ 320.00 EACH $ - $ - Trash Rack, 15" $ 325.00 EACH $ - $ - Trash Rack, 18" $ 350.00 EACH $ - $ - Trash Rack, 21" $ 375.00 EACH $ - $ - WRITE-IN-ITEMS 18" Concrete Yard Drain $ 250.00 LF $ - 21 $ 5,250.00 Culvert, PVC, 24" $ 60.00 LF $ - 260 $ 15,600.00 LF $ - $ - LF $ - $ - SUBTOTAL: $ - $ 369,660.00 MOBILIZATION 10%: $ - CONTINGENCY 15%: $ - TOTAL: $ - $ 369,660.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Rev 7/2017 Geotextile syardage R/F pipe co 270 3 90 20 1800 3 60 300 180 3 60 20 1200 3 60 147 150 3 50 20 1000 3 60 305 180 3 60 40 2400 3 120 309 165 3 55 30 1650 3 90 339 180 3 60 20 1200 3 60 316 330 3 110 30 3300 3 90 305 60 3 20 20 400 3 60 306 180 3 60 30 1800 3 90 483 525 3 175 20 3500 3 60 384 240 3 80 40 3200 3 120 384 120 3 40 20 800 3 60 385 630 3 210 20 4200 3 60 345 150 3 50 30 1500 3 90 340 420 3 140 20 2800 3 60 339 210 3 70 30 2100 3 90 120 3 40 30 1200 3 90 270 3 90 20 1800 3 60 4380 35850 1380 4987 3983.333 6520 sf 41610 535 sy 4623.333 606 infil trench pipe count 343 pipe count pipe lengthpipe count pipe width total pipe length 12059 101 2 80 2 10 180 102 2 50 4 10 140 102.1 2 40 12 10 200 103 4 50 2 30 260 104 3 45 2 20 175 105 2 50 2 10 120 106 3 100 2 20 340 106.1 2 10 20 106.2 3 50 2 20 190 107 2 165 2 30 390 108 4 70 2 30 340 108.1 2 30 2 20 100 109 2 200 2 10 420 110 2 40 2 20 120 111 3 130 2 10 410 112 2 60 2 20 160 112.1 3 30 2 30 150 113 4 80 2 10 340 4055 perf 6" ount wall 4" pvc 1009 4" perf pipe 5996 4" perf pvc 6" pipe for roof 6" pipe from roof to cb 6"pipe between trenches 6" pipe between cbs Civil File Checklist Performance Bond Required: ________ Amount: ____________________________________________________________ Describe: _______________________________________________________________________________________________________ Maintenance Bond Required: ________ Amount: ____________________________________________________________ Describe: _______________________________________________________________________________________________________ As-built required: ________ Bill of Sale required: _______ W / S / SS ROW Permit: ________________ ROW Dedication: ______ AFN: ____________________________ Easement: _______ AFN: __________________________ Action Date Comments Sent Notes Intake Submittal 2nd Round Submittal 3rd Round Submittal Performance Bond Request Performance Bond Received Material Submittals Contractor Business License Contractor Proof of Insurance DOE Stormwater Permit CESCL ROW Permit Issued Construction Plans Approved Pre-Construction Meeting No As-built Review Construction Complete Easement/Dedication Required Request CAD File Send PDFâ€™s & CAD to GIS Maintenance Bond Request Maintenance Bond Received Performance Bond Released As-built Review Construction Complete Easement/Dedication Required As-built Review/Bills of Sale Dedications/Easements Draft As-built Resubmittal As-built Plans Signed Request AutoCAD Files Dedications/Easements Recorded Prepare Bills of Sale for Notary Final Bill of Sales to Finance & GIS Send PDFâ€™s & CAD to GIS Maintenance Bond Released Page | 1 7/17REV Civil File Checklist 3/26/2021 Emailed Ryan for new legal and exhibit map for ROW dedication. The original was submitted by Bunney but only have electronic and not originals for recording. Provided the existing copy of the legal and exhibit map, Statutory Warranty Deed, and Council Exhibit Map for pretty picture. Good news! Approved by Council on February 26, 2018. Page | 2 7/17REV Centennial Park Water Account Table Account # Type Parcel/Building Meter Size Services Previous Connections 43-70115 Domestic 17215 - Res 2 Water/Sewer N/A Domestic 17215 - Bus 5/8 Water/Sewer N/A 43-70110 Domestic 17231 - Res 2 Water/Sewer N/A Domestic 17231 - Bus 5/8 Water/Sewer N/A 43-70105 Domestic 17313 - Res 2 Water/Sewer N/A Domestic 17313 - Bus 5/8 Water/Sewer N/A 43-70102 Irrigation 1 Water Only N/A 43-70100 Domestic 17327 â€“ Res A 2 Water/Sewer N/A Domestic 17327 â€“ Bus A 5/8 Water/Sewer N/A 43-70120 Domestic E 2 Water/Sewer N/A 43-70125 Domestic D 2 Water/Sewer N/A 43-70130 Domestic B 2 Water/Sewer N/A 43-70135 Domestic C 2 Water/Sewer N/A 43-70140 Domestic I 2 Water/Sewer N/A 43-70145 Domestic J 2 Water/Sewer N/A 43-70150 Domestic F 2 Water/Sewer N/A 43-70155 Domestic G 2 Water/Sewer N/A 43-70160 Domestic H 2 Water/Sewer N/A 43-70165 Domestic K 2 Water/Sewer N/A 43-70170 Domestic L 2 Water/Sewer N/A PH 2 Domestic M 2 Water/sewer N/A PH 2 Domestic N 2 Water/Sewer N/A PH 2 Domestic O - Apt 2 Water/Sewer N/A PH 2 Domestic O - Bus 5/8 Water/Sewer N/A Notes: â€¢ All connections and meter fees apply â€¢ Mixed Use Buildings will need separate connections for Commercial and Residential â€¢ Irrigation is a separate tap to the water main, all connection fees apply â€¢ All meter sizes are estimates until building official determines meter sizes CITY OF ARLINGTON 238 N. OLYMPIC AVE - ARLINGTON, WA. 98223 PHONE; (360) 403-3551 RIGHT OF WAY Address: 17231 67th Ave NE Permit #: 1860 Parcel #: 31052300300800 Expiration: 05/18/2020 OWNER APPLICANT CONTRACTOR EDGECOMB STATION 5J LLC EDGECOMB STATION 5J LLC EXXEL PACIFIC INC 19801 50TH AVE W 19801 50TH AVE W 323A TELEGRAPH RD LYNNWOOD, WA 98036 LYNNWOOD, WA 98036 BELLINGHAM, WA 98226 425-778-8500 425-778-8500 360-734-2872 LIC: EXXELPI073KN EXP: 01/02/2021 PERMIT APPROVAL Work to be performed as described and/or shown in the approved plans and/or application for the above named project is approved for construction by the City of Arlington Public Works Department. All work is subject to field inspection. NOVA HEATON ____________________________________________________________________________________________________________________________ Development Services Manager or Designee Print Name Date The above named contractor / property owner is hereby authorized to perform the above work within City Right-Of-Way in accordance with the terms of this permit and as shown on the attached drawing and subject to all applicable State, county and/or municipal laws and/or codes. All work shall be in accordance with the "standard Specifications for Road, Bridge and Municipal Construction," exept where modified by City of Arlington Public Works Standards or conditions herein. The contractor shall hold the City of Arlington harmless from any loss or damage to any person or property in the performance of said work. SALES TAX NOTICE: Sales tax relating to construction and construction materials in the City of Arlington must be reported on your sales tax return form and coded City of Arlington #3101. Applicant Signature Print Name Date CONDITIONS The applicant is required to notify the Communications Department Manager; slopez@arlingtonwa.gov and Community and Economic Development ced@arlingtonwa.gov FIVE (5) days prior to any TRAFFIC OR TRAIL deviation. TRAIL MUST BE OPEN ON WEEKENDS. The applicant is required to notify the City at least 24 hours before each inspection. Failure to give notice will result in an assessment of a 1-hour inspection time charge against the applicant. Applicant must comply with all applicable City of Arlington, state and federal laws, ordinances, code and regulation in performing the work authorized by this permit. Traffic Control must comply with the current version of MUTCD. Work Hours are 7 am to 7 pm Monday - Saturday (no work on Sundays or City Recognized Holidays). Inspections are not available on Saturday or Sunday. Two days before starting work, the applicant must have all utilities located. One Call, is a public utility locating service (#811 or 1-800-424-5555). Privately installed facilities must also be located using a private utility locating service. Private property owners which may be affected by the proposed work must be notified in advance of potential disruptions in access or utility services. Any infrastructure affected by this installation shall be restored to City of Arlington Standards & Specifications within a time frame not to exceed 7 days from completion of the installation. Roadway repair shall be per City Standard Detail R-140. PERMIT FEES Date Description Fee Amount 02/18/2020 RIGHT OF WAY SIDEWALK CLOSURE INCLUDED IN CIVIL CALL FOR INSPECTIONS RIGHT OF WAY INSPECTIONS (360) 403-3417 CALL BY 3:30 PM FOR NEXT DAY INSPECTIONS When calling for an inspection please leave the following information: Permit Number, Type of Inspection being requested, and whether you prefer morning or afternoon City of Arlington 18204 59th Avenue NE Arlington, WA 98223 Re: Centennial Park 17231 67th Ave NE, Arlington, WA 98223 Subject: Street Lighting Review â€“ Response Date: February 10, 2020 This letter is a follow up response to the street lighting review, to be installed at the above referenced project frontage, along Centennial Trail. Responses to the following comments: 1) 1/03/2020: Shift the lights to directly between the trees; provide an updated photometric analysis to ensure we still have adequate lighting. a. Response: In effort to match existing Centennial Trail lighting, light fixtures and photometrics remained unchanged. See updated landscaping layout, pg. 14/17 - trees have been revised by eccosDesign, Landscape Architect, to accommodate lighting levels and spacing. 2) 1/03/2020: The proposed trees appear to be Zelkova serrata â€œGreenvaseâ€. Confirm size at maturity does not interfere will illumination. a. Response: See attached email from eccosDesign, pgs. 15-16, for species description and potential size of trees at maturity. 3) 1/03/2020: It looks like the acorn foundations are right up against the back of curb in the planter strip. These should be closer to the sidewalk as their main purpose is to provide illumination there. The foundation top elevation should be the same as the elevation of the trail. a. Response: Landscape/photometrics plans do not reflect actual locations of light foundation placement. Unless otherwise noted, foundations will be shifted to be set tight to the trail. 4) 1/29/2020: Comment from The only comment remaining for the illumination is below. Please revise accordingly and resubmit. a. Response: Acorn light fixture spec has been revised to include flat, vented finial in-lieu of pointed finial. Sincerely, Jose Tapia Project Engineer Exxel Pacific, Inc. SUBMITTAL SHEET Page 1 Your Logo Here Exxel Pacific, Inc. 323 Telegraph Road Bellingham 98226 360-734-2872 Job: Centennial Park Spec Section Num: N/A Submittal: 260000-02 Revision: Package No: Package Revision: Date Submitted: 12/12/19 Response Required: 12/17/19 Submittal Title: Street Lighting - Centennial Trail Submittal Detail: Product data and model selection with Light Layout Contractor: Contractorâ€™s Stamp Project:Centennial Park Exxel Pacific Reviewed By: Matt Tilton Date Submitted: 9/18/19 Submittal #: 260000-02 âœ˜ Reviewed Revise & Resubmit Make Corrections Noted Rejected This submittal/shop drawing has been reviewed by Exxel Pacific for general conformance with design concept only and does not relieve this subcontractor or supplier of the responsibility for conformance with the Contract Documents, all of which have priority over this submittal. Subcontractor/Supplier is responsible for all dimensions and fabrication to be confirmed at the jobsite. Design Team Architect/Engineer Stamp Dykeman Architects ARCHITECTâ€™S REVIEW IS FOR CONFORMANCE WITH INFORMATION GIVEN AND DESIGN CONCEPT EXPRESSED IN THE CONTRACT CG Engineering DOCUMENTS. NOTATIONS ON THE SUBMITTAL DO NOT RELIEVE THE CONTRACTOR FROM COMPLIANCE WITH CONTRACT DOCUMENT REQUIREMENTS NOR AUTHORIZE CHANGES TO THE CONTRACT SUM AND TIME. THE CONTRACTOR IS RESPONSIBLE FOR: DETERMINING QUANTITIES AND DIMENSIONS; SELECTING CONSTRUCTION METHODS AND PROCEDURES; COORDINATING WITH OTHERâ€™S WORK; SUITABLE PERFORMANCE OF MATERIALS AND ASSEMBLIES AND PERFORMING WORK IN A SAFE MANNER. NO EXCEPTIONS TAKEN REVIEWED NOTE MARKINGS RETURNED FOR CORRECTION RESUBMIT BY: Doug Hofius DATE: 12/30/2019 1716 WEST MARINE VIEW DRIVE EVERETT, WA 98201 PHONE: (425) 259-3161 Note potential conflicts with street trees. (also required by City of Arlington) Date: Feb 10, 2020 Page 1/1 Transmittal Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Phone: (206) 575-6865 From: Mike Card Project City of Arlington St Lighting Quote# SEATAC-WWA19-81534 Location Arlington WA Contact: ATTACHED WE ARE SENDING YOU 1 COPY OF THE FOLLOWING ITEM: X Drawings Specifications Other: Prints Information Plans X Submittals THESE ARE TRANSMITTED FOR: Prior Approval X Resubmittal for Approval Record Approval Corrections Bids due on: Approval as Submitted Your Use Other: Approval as Noted Review and Comment Type MFG Part KING LUMINAIRE (WWA) K199R-B3AR-V-40W(SSL)-1036- 120:277V-K13-3K-BK LED Post Top Luminaire Leotek GCM2-40H-MV-WW-2R-BK-850-FFA SOUTH COAST LIGHTING & DESIG BCHUN2436/900A350 W/ GFI RECEPTACLE 35' DECO POLE W/ 6' DECO ARM @ 38' MH, BANNER ARMS, AND TWIN PLANTER BRACKETS SOUTH COAST LIGHTING & DESIG BCHUN2032/590A140 16' MH DECO POLE W/ BANNER ARMS, AND TWIN PLANTER BRACKETS Sea Tac c/o Portland Bolt 1" X 36" X 4" F1554GR55 ANCHOR BOLT ASSY Sea Tac c/o Portland Bolt 3/4" X 24" X 3" F1554GR36 ANCHOR BOLT ASSY FF00009 www.seataclighting.com Page 1/1 Submitted by Sea-Tac Lighting & Controls, LLC Quantity 4 (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Notes: 120:277V-K13-3K-BKK199R-B3AR-V-40W(SSL)-1036-Catalog Number: Type: SEATAC-WWA19-81534 Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 Project Type Quantity 3 Catalog No. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Data Weight 10 lbs [4.6 kg] EPA 0.44 ft2 Ordering Information Sample Catalog No. GCM2-30H-MV-NW-2R-GY-700-PCR7-WL LED Color 30H Drive Product Voltage Distribution Finish1 Options Code Temperature Current Code2 GCM2 30H MV 120-277V WW 3000K 2S Type 2 Short GY Gray 530 FDC3 Fixed Drive Current HV 347-480V NW 4000K 2R Type 2 Medium DB Dark 610 LPCR Less Photocontrol CW 5000K 3R Type 3 Medium Bronze 700 Receptacle 4 Type 4 BK Black 850 PCR74 ANSI 7-wire Photo- 5 Type 5 1A control Receptacle PCR7-CR5 Control Ready 7-wire PC 40H Drive Receptacle GCM2 40H WL Utility Wattage Label Current Code2 4B 4-Bolt Mounting Bracket 575 RWG Rubber Wildlife Guard 700 SWTB Straight Wire Terminal Block 850 BBL Bubble Level 950 DSC Door Safety Cable 1A CF6 Coastal Paint Finish Notes: 1 Gray, Black, and Dark Bronze standard. Consult factory for other finishes. Accessories* 2 Specified drive current code is the factory set drive current. Field adjustable current selector enables HSSGCM7 House Side Shield, Snap-On* fixture to be changed in the field to adjust light output for local conditions (not available with Fixed Drive 8 CSSGCM Cul-De-Sac Side Shield, Snap-On* Current (FDC) or PCR7-CR option). Consult factory if wattage limits require a special drive current. FSSGCM9 Front Side Shield, Snap-On* 3 Non-field adjustable, fixed drive current. Specify required drive current. Not available with PCR7-CR option. 10 SPB Square Pole Horizontal Arm Bracket 4 Includes current selector that enables field adjustability of light levels. Includes connectors to allow easy RPB10 Round Pole Horizontal Arm Bracket upgrade of wireless dimming via PCR7. Wireless node by others. 10 PTB Pole Top Tenon Horizontal 5 Control-ready wired at factory for wireless none dimming (node by others). Current selector not included Arm Bracket in the fixture. Not able to adjust above specified drive current. 10 PTB2 Pole Top Tenon Horizontal 6 Specify the CF Option for coastal installation. See warranty for details. Arm Bracket (2@180o) 7 Flush mounted house side shield. Shield cuts light off at 1/2 mounting height behind luminaire. WB10 Wall Horizontal Arm Bracket 8 Flush mounted cul-de-sac shield. Shield cuts light off at 1/2 mounting height behind luminaire and 1-1/2 BSK Bird Deterrent Spider Kit mounting height on either side of luminaire. LLPC11 Long-Life Twist Lock Photocontrol 9 Flush mounted front side shield cuts light off at approximately one mounting height in front of luminaire SC Twist Lock Shorting Cap (street side). *Accessories are ordered separately and not to be included in 10 Specify Color (GY, DB, BK) the catalog number. For factory installed HSS, CSS, and FSS 11 Specify MV (120-277V) or HV (347V-480V) consult factory. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 1/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Specifications Housing Quality Control Finish Die cast aluminum housing with universal Every luminaire is performance tested before Housing receives a durable, fade-resistant two-bolt slip fitter mounts to 1-1/4â€ to 2â€ and after a 2-hour burn-in period. Assembled polyester powder coat finish with 3.0 mil nominal (1-5/8â€ to 2-3/8â€ O.D.) diameter mast arm. in the USA. thickness. Standard finish tested to withstand One-piece aluminum housing provides passive 5000 hours in salt spray exposure per ASTM B117 heat-sinking of the LEDs and has upper surfaces Optical Systems and Coastal Finish per ASTM G85. Finish meets that shed precipitation. Four-bolt mounting Micro-lens optical systems produce IESNA scribe creepage rating 8 per ASTM D1654. Finish bracket is available. Mounting provisions meet Type 2, Type 3, Type 4, or Type 5 distributions tested 500 hours in UV exposure per ASTM G154 3G vibration per ANSI C136.31-2010 Normal and are fully sealed to maintain an IP66 rating. and meets ASTM D523 gloss retention. Luminaire produces 0% total lumens above 90â° Application, Bridge & Overpass. Mounting has leveling adjustment from Â± 5Â° in 2.5Â° steps. (BUG Rating, U=0). Optional house side shield Listings/Ratings/Labels cuts light off at 1/2 mounting height behind Electrical components are accessed without Luminaires are UL listed for use in wet locations luminaire. Front side shield cuts light off at tools via a high-strength, non-conductive in the United States and Canada. DesignLights approximately one mounting height in front of polycarbonate door with quick-release latches. Consortiumâ„¢ qualified product. Consult DLC the luminaire (street side). Cul-de-sac shield Polycarbonate material meets UL 746C for provides back and side light control for end QPL for Standard and Premium Classification outdoor usage. Available rubber wildlife guard of cul-de-sac applications. All shields are field Listings. International Dark Sky Association listed. (RWG option) conforms to mast arm with no installable without tools. Luminaire is qualified to operate at ambient gaps. temperatures of -40Â°C to 40Â°C. Electrical Light Emitting Diodes Rated life of electrical components is 100,000 Photometry High-flux/High-power white LEDs produce a hours. Uses isolated power supply that is Luminaires photometrics are tested by certified minimum of 90% of initial intensity over 75,000 1-10V dimmable. Power supply is wired with independent testing laboratories in accordance hours of life based on IES TM-21 (L90 â‰¥ 75k quick-disconnect terminals. Power supply with IES LM-79 testing procedures. hours). LEDs are tested in accordance with IES features a minimum power factor of .90 and LM-80 testing procedures. LEDs have correlated <20% Total Harmonic Distortion (THD). EMC Warranty color temperature of 3000K (WW), 4000K meets or exceeds FCC CFR Part 15. Terminal 10-year limited warranty is standard on luminaire (NW), or 5000K (CW) and 70 CRI minimum. block accommodates 6 to 14 gauge wire. Surge and components. LEDs are 100% mercury and lead free. protection complies with IEEE/ANSI C62.41 Vandal Resistance Category C High, 20kV/10kA and ANSI C136.2- Field Adjustability 2015, 20kV/10kA. Housing and optics rated to IK10 LED drive current can be changed in the field Standards to adjust light output for local conditions (not Controls Luminaire complies with: available with Fixed Drive Current (FDC) or 3-Wire photocontrol receptacle is standard. ANSI: C136.2, C136.3, C136.10, C136.13, C136.15, PCR7-CR option). The specified drive current ANSI C136.41 7-wire (PCR7) photocontrol C136.22, C136.31, C136.35, C136.37, C136.41, code will be the factory set drive current. Field receptacle is available. All photocontrol C62.41, C78.377, C82.77 adjustments can be made with the current receptacles have tool-less rotatable bases. Other: FCC 47 CFR, IEC 60598, ROHS II, UL 1449, selector included in the fixture. Field adjustable Wireless control module is provided by others. UL 1598 range shown in performance data table. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 2/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Performance Data: 3000K (WW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 5770 120 610 58 6700 116 30H 700 68 7620 112 850 82 8800 107 1A 101 10480 104 GCM2 575 73 8780 120 700 88 10230 116 40H 850 107 11960 112 950 121 13040 108 1A 135 14080 104 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Performance Data: 4000K (NW) and 5000K (CW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 6330 132 610 58 7440 128 30H 700 68 8550 126 850 82 9830 120 1A 101 11720 116 GCM2 575 73 9590 131 700 88 11260 128 40H 850 107 13270 124 950 121 14390 119 1A 135 15430 114 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 3/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet BUG Ratings 3000K (WW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 850 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 40H 850 B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 4000K (NW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B3 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 5000K (CW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 4/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2436/900A350 W/ GFI City of Arlington St Lighting RECEPTACLE Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY A 1 ADD COLOR CALL OUT 12.2.19 M.K. 6' CAT. #; SCLBCHUN2436/900A350/GFCI Quantity 3 .19 PER 1" AWS D.1.1 TUBE THK. 12.75" 1.25" BOLT HOLE 12" BOLT CIRCLE POLE SHAFT - 16 SHARP FLUTE 12.75" CROSS SECTION 9" POLE BASE DIAMETER DETAIL 8 - BASE PLATE 1" LE (4) 1" X 36" X 4" ANCHOR BOLTS WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 SHAFT; 9" x 4.1" x 35' TAPERED (.14"/FT) PO 36" 15 AMP, 120V DUPLEX RECEPTACLE @ 13' ABOVE GRADE WITH WEATHERPROOF, IN USE COVER ARMS TO MATCH EXISTING STAINLESS STEEL 4" PLANT BASKETS DETAIL 8 - BASE PLATE * ALL HARDWARE TO BE STAINLESS STEEL * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE By others * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING DECORATIVE 2 PC. CLAMP AROUND CAST ALUMINUM BASE COVER; CAT.#: BCHUN2436 FINISHING SPECIFICATIONS SEE DETAIL 4 - BASE COVER DETAIL 36" 24" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: SCLBCHUN2436/900A350/GFCI DATE: R.R. 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO C.O. ARLINGTON, WA DRAWING NUMBER: SHEET NUMBER: Lighting & Design CHANGE DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 1 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2032/590A140 City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY KING LUMINAIRE 70W A 1 REMOVE GFCI & ADD COLOR CALL OUT 12.2.19 M.K. MH K199 CAT. #; SCLBCHUN2032/590A140 Quantity 4 3.5" x 3.5" POLE TOP TENON 0.19" PER 0.875" AWS TUBE THK. 10" 1.25" x 1.75" SLOTTED ANCHOR BOLT HOLES 9" BOLT CIRCLE 10" 5.9" POLE BASE DIAMETER 16' LIGHT CENTER LE 14' DETAIL 2 - BASE PLATE 0.75" (4) 0.75" X 24" X 3" ANCHOR BOLTS TAPERED (.14"/FT) POSHAFT - 5.9" x 3.94" x WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 24" 3" DETAIL 3 - ANCHOR BOLT * ALL HARDWARE TO BE STAINLESS STEEL 32" * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING FINISHING SPECIFICATIONS 20" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: DATE: R.R. SLCBCHUN2032/590A140 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO CHANGE C.O. ARLINGTON, WA. DRAWING NUMBER: SHEET NUMBER: Lighting & Design DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 2 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 1"-8 Bolt 1"-8 36" F1554 Grade 55 90 Bent Anchor Nut 1"-8 A563 Grade DH Heavy Hex Washer 1" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 12 36" Notes: BOLT ASSY1" X 36" X 4" F1554GR55 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date Customer SEA-TAC LTG & CONTROLS 11/18/2019 SEATAC-WWA19-81534Type: Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 3/4"-10 Bolt 3/4"-10 24" F1554 Grade 55 90 Bent Anchor Nut 3/4"-10 A563 Grade DH Heavy Hex Washer 3/4" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 16 24" Notes: BOLT ASSY3/4" X 24" X 3" F1554GR36 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date SEATAC-WWA19-81534Type: Customer SEA-TAC LTG & CONTROLS 11/18/2019 Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com All Acorn Light Fixtures to be 16' H 100A Meter & - Acorn Panel for street All Cobra Head Light - No issue, (1) tree lighting Fixtures to be 32' H deleted to reduce K C 137.30 A conflict 0.1 0.2 0.3 0.3 0.3 0.324' - 7"137.40 " BT 5- E ' 0 S 2 R 0.2 0.3 TOC 137.200.4 0.4 0.5 0.4 A E 0 < R WA WA0 0 R/ 0.2 0.4 0.5 0.8 0.8 0.8 0 0 6/L-6 - 0 WASH 0.3 0.4 TOP 142.00.7 0.8 0.7 0.7 0 142.4DRAIN TOE 138.0 Acorn_1 0.3 0.5 0.8 0.8 0.4 0.8 0 TOP 142.0 0 ILEFA - Cobra Head TOE 138.25 142.4 0.4 0.5 0.7 1.0 0.8 0.9 0 - No issue. TOC 137.25 0 0.4 0.5 0.6137.350.8 0.8 0.7 0 137.45 0 TOP 142.0 0 PAHhfg R/F 0.5 0.6 TOE 138.250.7 0.8 0.8 0.6 0 TOP 142.0 0 TOE 138.25 0.6 0.7 0.9 0.9 0.9 0.7 TOC 137.35 0 0.7 0.9 1.1137.451.2 1.1 0.8 0 1/L-6; S ROOT 137.55 0 0.7 1.0 1.2137.901.4 1.3 0.9 0 IRR TOC 137.45 0 CO /F - Acorn 0.7 1.0 TOP 142.01.3 1.5 1.5 1.1 0 0 TOE 138.25 Cobra138.2 - See description NDmb 0.4 0.7 1.0 1.2 1.5 1.6 1.2 below LNDG J LNDG SEC 0.4 0.7 1.0 1.3 1.4 1.4 1.0 WA WA 142.3 138 137.4 138.80 0.5 0.7 1.0 1.2 1.3 1.2 0.9 ACEBL 137.0 137.55 0.5 0.7 0.9 TOP 142.01.0 1.1 1.0 0.8 < SS TOE 138.25 - To accommodate (2) 0.5 0.6 0.7 0.8 67th AVENUE NE0.9 0.9 0.7 Acorns and Cobra Head in TOC 137.60 138.1 0.4 0.5 0.6 0.8 0.8 0.8 0.6 0 front of two buildings, trees to 00 0 R/F TOP 142.0 0.4 0.5 0.6TOE 138.250.8 0.9 0.8 0.7 0 6/L-6 - the north of Cobra Head will 0 WASHE TOC 137.64 0 DRAINR to shift 3' further north and 0.3 0.5 0.7 0.9 1.2 1.0 1.0 trees to the south of the 0.3 0.5 0.7 1.1 1.1 0.6Acorn_10.9 0 0 Cobra Head to shift 5' further TOC 137.65 0 142.3 0.3 0.5 0.7 TOP 142.01.1 1.1 0.6138 0.9 0 south (per eccosDesign). TOE 138.5 0 PAHhfg 0.4 0.5 0.7 0.9 1.2 1.1 1.0 00 R/F 0.4 0.5 0.7 0.8 0.9 0.9 0.7 0 - Cobra Head 0 TOP 142.0 TOE 138.5 - See description 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0 0 ILEX above. 0.5 0.6 0.8 1.0 1.0 1.0 142.30.7 0 INST TOC 137.86 0 0.5 0.7 1.0 1.2 1.2 1.1 0.8 0 F 138.10 0 0 TOP 1 0.5 0.7 1.1 1.3 1.4 1.3 WA1.0 YH TOE 1 D J TOP 1 0.5 0.7 1.0 1.3 1.5 1.5 1.1 0 TOE 1 Cobra00 0 R/ SEC 0.5 0.7 1.0 1.3 1.5 1.6 1.2 0 0 - Acorn 0.5 0.7 1.1 1.3 1.5 1.4 1.0 0 6/L-6 WAS DRA - See description TOC 137.92 0 0.5 0.8 1.0 1.2 1.3 1.2 0.9 0 above. TOP 142.0 0 0.6 0.7 0.9 1.1 1.1 1.0TOE 138.50.8 0 0 138.25 00 R/F 0.5 0.6 0.8 0.9 1.0 0.9 0.7 00PAHhfg 0 0.5 0.6 0.7 0.9 1.0 TOP 142.00.9 0.8 0 TOE 138.5 0 TOP TOE 0.4 0.5 0.7 0.9 1.2 1.1 1.0 0 138.15WA 0 0.4 0.5 0.7 1.1 1.1 0.8Acorn_10.9 0 TOC 138.05 0 1 0.4 0.6 0.7 1.1138.25 1.1 0.6 0.9 0 0 SEC WA - Cobra Head 0.4 0.5 0.7 0.9 1.2 1.0 1.0 00 138.25 - No issue 0.4 0.5 0.7TOC 138.130.8 0.9 0.9 0.7 0 0 WA 0.5 0.6 0.7 0.8 0.9 0.8 0.6 137.9 TOP 14 TOE 13 0.6 0.7 0.8 1.0 1.0 0.9 0.7 138.1 137.80 WA 138 WA 0.6 0.7 1.0 137.651.1 1.2 1.1 0.8 139.2 LSSSss J 0.5 0.8 1.1 1.3 1.4 1.3 0.8 137.9 138.1 0.5 0.8 1.1 1.3 1.5 1.4 0.9 Cobra 13 0.5 0.7 1.1 1.3 1.6 1.6 0.1 0 0 0 0 J 0.5 0.8 1.1 1.3 1.5 1.4 0.90 TOP 142.0 0 - Acorn TOE 139.25 0 - No issue 0.5 0.8 1.1TOP 142.01.2 1.3 1.2 0.80 SEC TOE 139.0 0 0.5 0.7 0.9 1.1 1.1 1.0 0.70 TOC 138.5 0 R/F 138.6 0 0.5 0.6 0.7 0.8 0.9 0.8 0.6 138.7 0 67th AVENUE NE 0.4 0.5 0.6 0.7 0.8 0.8 0.6 TOP 142.0 TOE 139.25 0.4 0.4 0.6 0.7139.201.0 0.9 0.8 0 R/F 139.10 0 TOC 138.86 01/L-6; S 0.3 0.4 0.5 0.9 0.9 0.7 0.8 Acorn_10ROOT B TOP 142.0 0 TOE 139.25LSSSss 0.2 0.4 0.5 0.9 0.8 0.4 0.8 0 R/F 139.30 0 IL A 139.20 0 0.2 0.3 0.5 0.6 0.9 0.8 0.8 0 TOC 139.06 0 0.2 0.3 0.4 0.5 0.5 0.5 0.5 0 142. 0.1 0.2 0.3 0.3 0.4 0.4 0.3 TO 0.1 0.1 0.2 0.2 0.2 0.2 0.2 TODN 0.1 0.1 0.1 0.1 0.2 0.2 0.1 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 24' - 7" 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.0 FRONT SETBACK 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Luminaire Schedule Symbol Qty Label Lum. Lumens LLF Description 3 Cobra 11960 0.810 GCM2-40H-MV-WW-2R-XX-850 S 4 Acorn_1 4021 0.810 K118-B3AR-V-40(SSL)-1036-3K STREET AND PATHWAY LIGHTING CALCULATIONS SCALE: 1" = 50'-0" Jose Tapia From: Patrik Dylan (eccosDesign) <patrik@eccosdesign.com> Sent: Wednesday, January 8, 2020 10:48 AM To: Jose Tapia Cc: Doug Hofius; Chad Van Ry; Matt Tilton; Ian McKay; Tim Spink; Michael Stevens; Chevy Chase; Jared Underbrink; Joe Galusha Subject: Re: FW: Centennial Park - Submittal #260000-02 & Permit Set Plans Hi Jose The Green Vase Zelkova projects to be 40 feet wide at maturity which means the canopies will eventually touch. That being said, this variety is 'vase shaped' and once it starts to get that wide, it is only at the top. I have attached a link that show the form pretty well. If the light is a pedestrian scale light at 12-14 feet the tree should easily grow up and over the light. Worst case, minor lateral pruning in 15 years, but likely none. If the light is a tall freeway style street light at 30 feet tall than there may be a conflict. In any event the light should be pushed to the middle of the two trees as possible. Also, this is in an urban planting, vs ideal conditions, so I expect there to be a fair amount of 'dwarfing' and think the final width in 20 years may be 25 feet or something like that. I am happy to switch to something more columnar if we want to be safe or if that would accelerate city approval, but if the light is low, I think we will be fine. Fact sheet below. Thx, 1 _________________________ Patrik Dylan, PLA eccosDesign LLC Landscape Architecture and Planning p. 360.419.7400 (forwards to cell) f. 800.508.2017 txt. 360.421.4894 www.eccosdesign.com On Tue, Jan 7, 2020 at 10:37 AM Jose Tapia <JoseT@exxelpacific.com> wrote: Team: See commentâ€™s below from the cityâ€™s engineers regarding the streetlights and landscaping â€“ minor corrections and clarification needed. Be great to see something by end of week so we can resubmit to close these comments out with the city. Thank you, Jose Tapia 2 Acorn Cobra Acorn SUBMITTAL SHEET Page 1 Your Logo Here Exxel Pacific, Inc. 323 Telegraph Road Bellingham 98226 360-734-2872 Job: Centennial Park Spec Section Num: N/A Submittal: 260000-02 Revision: Package No: Package Revision: Date Submitted: 12/12/19 Response Required: 12/17/19 Submittal Title: Street Lighting - Centennial Trail Submittal Detail: Product data and model selection with Light Layout Contractor: Contractorâ€™s Stamp Project:Centennial Park Exxel Pacific Reviewed By: Matt Tilton Date Submitted: 9/18/19 Submittal #: 260000-02 âœ˜ Reviewed Revise & Resubmit Make Corrections Noted Rejected This submittal/shop drawing has been reviewed by Exxel Pacific for general conformance with design concept only and does not relieve this subcontractor or supplier of the responsibility for conformance with the Contract Documents, all of which have priority over this submittal. Subcontractor/Supplier is responsible for all dimensions and fabrication to be confirmed at the jobsite. Design Team Architect/Engineer Stamp Dykeman Architects CG Engineering Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Date: Dec 2, 2019 Phone: (206) 575-6865 Fax: Job Name City of Arlington St Lighting SEATAC-WWA19-81534 Arlington WA Bid Date Nov 5, 2019 Submittal Date Nov 26, 2019 Distributor: Platt Electric Supply - Bellingham 1825 Ellis St. Bellingham WA 98225 Date: Dec 2, 2019 Page 1/1 Transmittal Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Phone: (206) 575-6865 From: Mike Card Project City of Arlington St Lighting Quote# SEATAC-WWA19-81534 Location Arlington WA Contact: ATTACHED WE ARE SENDING YOU 1 COPY OF THE FOLLOWING ITEM: X Drawings Specifications Other: Prints Information Plans X Submittals THESE ARE TRANSMITTED FOR: Prior Approval Resubmittal for Approval Record X Approval Corrections Bids due on: Approval as Submitted Your Use Other: Approval as Noted Review and Comment Type MFG Part KING LUMINAIRE (WWA) K199R-B3AR-V-40W(SSL)-1036- 120:277V-K13-3K-BK LED Post Top Luminaire Leotek GCM2-40H-MV-WW-2R-BK-850-FFA SOUTH COAST LIGHTING & DESIG BCHUN2436/900A350 W/ GFI RECEPTACLE 35' DECO POLE W/ 6' DECO ARM @ 38' MH, BANNER ARMS, AND TWIN PLANTER BRACKETS SOUTH COAST LIGHTING & DESIG BCHUN2032/590A140 16' MH DECO POLE W/ BANNER ARMS, AND TWIN PLANTER BRACKETS Sea Tac c/o Portland Bolt 1" X 36" X 4" F1554GR55 ANCHOR BOLT ASSY Sea Tac c/o Portland Bolt 3/4" X 24" X 3" F1554GR36 ANCHOR BOLT ASSY FF00009 www.seataclighting.com Page 1/1 Submitted by Sea-Tac Lighting & Controls, LLC (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Notes: 120:277V-K13-3K-BKK199R-B3AR-V-40W(SSL)-1036-Catalog Number: Quantity 4 Type: SEATAC-WWA19-81534 Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 Project Type Quantity 3 Catalog No. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Data Weight 10 lbs [4.6 kg] EPA 0.44 ft2 Ordering Information Sample Catalog No. GCM2-30H-MV-NW-2R-GY-700-PCR7-WL LED Color 30H Drive Product Voltage Distribution Finish1 Options Code Temperature Current Code2 GCM2 30H MV 120-277V WW 3000K 2S Type 2 Short GY Gray 530 FDC3 Fixed Drive Current HV 347-480V NW 4000K 2R Type 2 Medium DB Dark 610 LPCR Less Photocontrol CW 5000K 3R Type 3 Medium Bronze 700 Receptacle 4 Type 4 BK Black 850 PCR74 ANSI 7-wire Photo- 5 Type 5 1A control Receptacle PCR7-CR5 Control Ready 7-wire PC 40H Drive Receptacle GCM2 40H WL Utility Wattage Label Current Code2 4B 4-Bolt Mounting Bracket 575 RWG Rubber Wildlife Guard 700 SWTB Straight Wire Terminal Block 850 BBL Bubble Level 950 DSC Door Safety Cable 1A CF6 Coastal Paint Finish Notes: 1 Gray, Black, and Dark Bronze standard. Consult factory for other finishes. Accessories* 2 Specified drive current code is the factory set drive current. Field adjustable current selector enables HSSGCM7 House Side Shield, Snap-On* fixture to be changed in the field to adjust light output for local conditions (not available with Fixed Drive 8 CSSGCM Cul-De-Sac Side Shield, Snap-On* Current (FDC) or PCR7-CR option). Consult factory if wattage limits require a special drive current. FSSGCM9 Front Side Shield, Snap-On* 3 Non-field adjustable, fixed drive current. Specify required drive current. Not available with PCR7-CR option. 10 SPB Square Pole Horizontal Arm Bracket 4 Includes current selector that enables field adjustability of light levels. Includes connectors to allow easy RPB10 Round Pole Horizontal Arm Bracket upgrade of wireless dimming via PCR7. Wireless node by others. 10 PTB Pole Top Tenon Horizontal 5 Control-ready wired at factory for wireless none dimming (node by others). Current selector not included Arm Bracket in the fixture. Not able to adjust above specified drive current. 10 PTB2 Pole Top Tenon Horizontal 6 Specify the CF Option for coastal installation. See warranty for details. Arm Bracket (2@180o) 7 Flush mounted house side shield. Shield cuts light off at 1/2 mounting height behind luminaire. WB10 Wall Horizontal Arm Bracket 8 Flush mounted cul-de-sac shield. Shield cuts light off at 1/2 mounting height behind luminaire and 1-1/2 BSK Bird Deterrent Spider Kit mounting height on either side of luminaire. LLPC11 Long-Life Twist Lock Photocontrol 9 Flush mounted front side shield cuts light off at approximately one mounting height in front of luminaire SC Twist Lock Shorting Cap (street side). *Accessories are ordered separately and not to be included in 10 Specify Color (GY, DB, BK) the catalog number. For factory installed HSS, CSS, and FSS 11 Specify MV (120-277V) or HV (347V-480V) consult factory. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 1/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Specifications Housing Quality Control Finish Die cast aluminum housing with universal Every luminaire is performance tested before Housing receives a durable, fade-resistant two-bolt slip fitter mounts to 1-1/4â€ to 2â€ and after a 2-hour burn-in period. Assembled polyester powder coat finish with 3.0 mil nominal (1-5/8â€ to 2-3/8â€ O.D.) diameter mast arm. in the USA. thickness. Standard finish tested to withstand One-piece aluminum housing provides passive 5000 hours in salt spray exposure per ASTM B117 heat-sinking of the LEDs and has upper surfaces Optical Systems and Coastal Finish per ASTM G85. Finish meets that shed precipitation. Four-bolt mounting Micro-lens optical systems produce IESNA scribe creepage rating 8 per ASTM D1654. Finish bracket is available. Mounting provisions meet Type 2, Type 3, Type 4, or Type 5 distributions tested 500 hours in UV exposure per ASTM G154 3G vibration per ANSI C136.31-2010 Normal and are fully sealed to maintain an IP66 rating. and meets ASTM D523 gloss retention. Luminaire produces 0% total lumens above 90â° Application, Bridge & Overpass. Mounting has leveling adjustment from Â± 5Â° in 2.5Â° steps. (BUG Rating, U=0). Optional house side shield Listings/Ratings/Labels cuts light off at 1/2 mounting height behind Electrical components are accessed without Luminaires are UL listed for use in wet locations luminaire. Front side shield cuts light off at tools via a high-strength, non-conductive in the United States and Canada. DesignLights approximately one mounting height in front of polycarbonate door with quick-release latches. Consortiumâ„¢ qualified product. Consult DLC the luminaire (street side). Cul-de-sac shield Polycarbonate material meets UL 746C for provides back and side light control for end QPL for Standard and Premium Classification outdoor usage. Available rubber wildlife guard of cul-de-sac applications. All shields are field Listings. International Dark Sky Association listed. (RWG option) conforms to mast arm with no installable without tools. Luminaire is qualified to operate at ambient gaps. temperatures of -40Â°C to 40Â°C. Electrical Light Emitting Diodes Rated life of electrical components is 100,000 Photometry High-flux/High-power white LEDs produce a hours. Uses isolated power supply that is Luminaires photometrics are tested by certified minimum of 90% of initial intensity over 75,000 1-10V dimmable. Power supply is wired with independent testing laboratories in accordance hours of life based on IES TM-21 (L90 â‰¥ 75k quick-disconnect terminals. Power supply with IES LM-79 testing procedures. hours). LEDs are tested in accordance with IES features a minimum power factor of .90 and LM-80 testing procedures. LEDs have correlated <20% Total Harmonic Distortion (THD). EMC Warranty color temperature of 3000K (WW), 4000K meets or exceeds FCC CFR Part 15. Terminal 10-year limited warranty is standard on luminaire (NW), or 5000K (CW) and 70 CRI minimum. block accommodates 6 to 14 gauge wire. Surge and components. LEDs are 100% mercury and lead free. protection complies with IEEE/ANSI C62.41 Vandal Resistance Category C High, 20kV/10kA and ANSI C136.2- Field Adjustability 2015, 20kV/10kA. Housing and optics rated to IK10 LED drive current can be changed in the field Standards to adjust light output for local conditions (not Controls Luminaire complies with: available with Fixed Drive Current (FDC) or 3-Wire photocontrol receptacle is standard. ANSI: C136.2, C136.3, C136.10, C136.13, C136.15, PCR7-CR option). The specified drive current ANSI C136.41 7-wire (PCR7) photocontrol C136.22, C136.31, C136.35, C136.37, C136.41, code will be the factory set drive current. Field receptacle is available. All photocontrol C62.41, C78.377, C82.77 adjustments can be made with the current receptacles have tool-less rotatable bases. Other: FCC 47 CFR, IEC 60598, ROHS II, UL 1449, selector included in the fixture. Field adjustable Wireless control module is provided by others. UL 1598 range shown in performance data table. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 2/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Performance Data: 3000K (WW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 5770 120 610 58 6700 116 30H 700 68 7620 112 850 82 8800 107 1A 101 10480 104 GCM2 575 73 8780 120 700 88 10230 116 40H 850 107 11960 112 950 121 13040 108 1A 135 14080 104 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Performance Data: 4000K (NW) and 5000K (CW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 6330 132 610 58 7440 128 30H 700 68 8550 126 850 82 9830 120 1A 101 11720 116 GCM2 575 73 9590 131 700 88 11260 128 40H 850 107 13270 124 950 121 14390 119 1A 135 15430 114 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 3/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet BUG Ratings 3000K (WW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 850 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 40H 850 B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 4000K (NW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B3 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 5000K (CW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 4/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2436/900A350 W/ GFI City of Arlington St Lighting RECEPTACLE Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY A 1 ADD COLOR CALL OUT 12.2.19 M.K. 6' CAT. #; SCLBCHUN2436/900A350/GFCI Quantity 3 .19 PER 1" AWS D.1.1 TUBE THK. 12.75" 1.25" BOLT HOLE 12" BOLT CIRCLE POLE SHAFT - 16 SHARP FLUTE 12.75" CROSS SECTION 9" POLE BASE DIAMETER DETAIL 8 - BASE PLATE 1" LE (4) 1" X 36" X 4" ANCHOR BOLTS WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 SHAFT; 9" x 4.1" x 35' TAPERED (.14"/FT) PO 36" 15 AMP, 120V DUPLEX RECEPTACLE @ 13' ABOVE GRADE WITH WEATHERPROOF, IN USE COVER ARMS TO MATCH EXISTING STAINLESS STEEL 4" PLANT BASKETS DETAIL 8 - BASE PLATE * ALL HARDWARE TO BE STAINLESS STEEL * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING DECORATIVE 2 PC. CLAMP AROUND CAST ALUMINUM BASE COVER; CAT.#: BCHUN2436 FINISHING SPECIFICATIONS SEE DETAIL 4 - BASE COVER DETAIL 36" 24" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: SCLBCHUN2436/900A350/GFCI DATE: R.R. 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO C.O. ARLINGTON, WA DRAWING NUMBER: SHEET NUMBER: Lighting & Design CHANGE DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 1 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2032/590A140 City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY KING LUMINAIRE 70W A 1 REMOVE GFCI & ADD COLOR CALL OUT 12.2.19 M.K. MH K199 CAT. #; SCLBCHUN2032/590A140 Quantity 4 3.5" x 3.5" POLE TOP TENON 0.19" PER 0.875" AWS TUBE THK. 10" 1.25" x 1.75" SLOTTED ANCHOR BOLT HOLES 9" BOLT CIRCLE 10" 5.9" POLE BASE DIAMETER 16' LIGHT CENTER LE 14' DETAIL 2 - BASE PLATE 0.75" (4) 0.75" X 24" X 3" ANCHOR BOLTS TAPERED (.14"/FT) POSHAFT - 5.9" x 3.94" x WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 24" 3" DETAIL 3 - ANCHOR BOLT * ALL HARDWARE TO BE STAINLESS STEEL 32" * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING FINISHING SPECIFICATIONS 20" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: DATE: R.R. SLCBCHUN2032/590A140 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO CHANGE C.O. ARLINGTON, WA. DRAWING NUMBER: SHEET NUMBER: Lighting & Design DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 2 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 1"-8 Bolt 1"-8 36" F1554 Grade 55 90 Bent Anchor Nut 1"-8 A563 Grade DH Heavy Hex Washer 1" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 12 36" Notes: BOLT ASSY1" X 36" X 4" F1554GR55 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date Customer SEA-TAC LTG & CONTROLS 11/18/2019 SEATAC-WWA19-81534Type: Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 3/4"-10 Bolt 3/4"-10 24" F1554 Grade 55 90 Bent Anchor Nut 3/4"-10 A563 Grade DH Heavy Hex Washer 3/4" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 16 24" Notes: BOLT ASSY3/4" X 24" X 3" F1554GR36 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date SEATAC-WWA19-81534Type: Customer SEA-TAC LTG & CONTROLS 11/18/2019 Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com 100A Meter & Panel for street lighting K C A 0.1 0.2 0.3 0.3 0.3 0.324' - 7" " BT 5- E ' 0 S 2 R 0.2 0.3 0.4 0.4 0.5 0.4 A E R 0.2 0.4 0.5 0.8 0.8 0.8 0.3 0.4 0.7 0.8 0.7 Acorn_10.7 0.3 0.5 0.8 0.8 0.4 0.8 0.4 0.5 0.7 1.0 0.8 0.9 0.4 0.5 0.6 0.8 0.8 0.7 0.5 0.6 0.7 0.8 0.8 0.6 0.6 0.7 0.9 0.9 0.9 0.7 0.7 0.9 1.1 1.2 1.1 0.8 0.7 1.0 1.2 1.4 1.3 0.9 0.7 1.0 1.3 1.5 1.5 1.1 Cobra 0.4 0.7 1.0 1.2 1.5 1.6 1.2 J SEC 0.4 0.7 1.0 1.3 1.4 1.4 1.0 0.5 0.7 1.0 1.2 1.3 1.2 0.9 0.5 0.7 0.9 1.0 1.1 1.0 0.8 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0.4 0.5 0.6 0.8 0.8 0.8 0.6 0.4 0.5 0.6 0.8 0.9 0.8 0.7 0.3 0.5 0.7 0.9 1.2 1.0 1.0 0.3 0.5 0.7 1.1 1.1 0.6Acorn_10.9 0.3 0.5 0.7 1.1 1.1 0.6 0.9 0.4 0.5 0.7 0.9 1.2 1.1 1.0 0.4 0.5 0.7 0.8 0.9 0.9 0.7 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0.5 0.6 0.8 1.0 1.0 1.0 0.7 0.5 0.7 1.0 1.2 1.2 1.1 0.8 0.5 0.7 1.1 1.3 1.4 1.3 1.0 J 0.5 0.7 1.0 1.3 1.5 1.5Cobra1.1 SEC 0.5 0.7 1.0 1.3 1.5 1.6 1.2 0.5 0.7 1.1 1.3 1.5 1.4 1.0 0.5 0.8 1.0 1.2 1.3 1.2 0.9 0.6 0.7 0.9 1.1 1.1 1.0 0.8 0.5 0.6 0.8 0.9 1.0 0.9 0.7 0.5 0.6 0.7 0.9 1.0 0.9 0.8 0.4 0.5 0.7 0.9 1.2 1.1 1.0 0.4 0.5 0.7 1.1 1.1 0.8Acorn_10.9 0.4 0.6 0.7 1.1 1.1 0.6 0.9 SEC 0.4 0.5 0.7 0.9 1.2 1.0 1.0 0.4 0.5 0.7 0.8 0.9 0.9 0.7 0.5 0.6 0.7 0.8 0.9 0.8 0.6 0.6 0.7 0.8 1.0 1.0 0.9 0.7 0.6 0.7 1.0 1.1 1.2 1.1 0.8 J 0.5 0.8 1.1 1.3 1.4 1.3 0.8 0.5 0.8 1.1 1.3 1.5 1.4 0.9 Cobra 0.5 0.7 1.1 1.3 1.6 1.6 0.1 J 0.5 0.8 1.1 1.3 1.5 1.4 0.9 0.5 0.8 1.1 1.2 1.3 1.2 0.8 SEC 0.5 0.7 0.9 1.1 1.1 1.0 0.7 0.5 0.6 0.7 0.8 0.9 0.8 0.6 0.4 0.5 0.6 0.7 0.8 0.8 0.6 0.4 0.4 0.6 0.7 1.0 0.9 0.8 0.3 0.4 0.5 0.9 0.9 0.7Acorn_10.8 0.2 0.4 0.5 0.9 0.8 0.4 0.8 0.2 0.3 0.5 0.6 0.9 0.8 0.8 0.2 0.3 0.4 0.5 0.5 0.5 0.5 0.1 0.2 0.3 0.3 0.4 0.4 0.3 0.1 0.1 0.2 0.2 0.2 0.2 0.2 DN 0.1 0.1 0.1 0.1 0.2 0.2 0.1 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 24' - 7" 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.0 FRONT SETBACK 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Luminaire Schedule Symbol Qty Label Lum. Lumens LLF Description 3 Cobra 11960 0.810 GCM2-40H-MV-WW-2R-XX-850 S 4 Acorn_1 4021 0.810 K118-B3AR-V-40(SSL)-1036-3K STREET AND PATHWAY LIGHTING CALCULATIONS SCALE: 1" = 50'-0" SUBMITTAL SHEET Page 1 Your Logo Here Exxel Pacific, Inc. 323 Telegraph Road Bellingham 98226 360-734-2872 Job: Centennial Park Spec Section Num: N/A Submittal: 310000-01310000-04 Revision: Package No: Package Revision: Date Submitted: 11/20/199/18/19 Response Required: 11/23/199/20/19 Utilities - Water, Sewer, Storm - Piping & Submittal Title: Accessories. Submittal Detail: Contractor: Contractorâ€™s Stamp Project:Centennial Park Exxel Pacific Reviewed By: Matt Tilton Date Submitted: 10/17/19 Submittal #: 310000-03 âœ˜ Reviewed Revise & Resubmit Make Corrections Noted Rejected This submittal/shop drawing has been reviewed by Exxel Pacific for general conformance with design concept only and does not relieve this subcontractor or supplier of the responsibility for conformance with the Contract Documents, all of which have priority over this submittal. Subcontractor/Supplier is responsible for all dimensions and fabrication to be confirmed at the jobsite. Design Team Architect/Engineer Stamp Dykeman Architects CG Engineering H.B. Jaeger, a division of Iconix Waterworks JOB NAME: Centennial Park ADDRESS: 172nd St SE & 67th Ave NE Arlington, Wa 98223 CONTRACTOR: Taylors Excavators SUPPLIER: HB Jaeger, a division of Iconix Waterworks Snohomish, Washington 98290 CONTACT: AARON OLSON 425-293-3336 Line No. No. Description Quantity 1 *** STORM *** 2 3 STORM MAIN 4 NOTE: STORM STRUCTURES BY OTHERS. 5 24" ADS ALREADY SHIPPED AND ON SITE 6 SPU351214 12 SDR35 D3034 GSK PVC GREEN PIPE 14' 378 7 SF445120 12 SDR35 SANDED MH ADAPTER GASKETED 9 8 SFSW406120 12 SDR35 SW SHORT TURN 90 HXH 1 9 SV-FREIGHT-VENDOR APPROX. FREIGHT ON NON-STOCK PVC FITTING 1 10 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 5 11 12 ROOF DRAIN NOTE: PER DTL 1, SHEET C3.6. QUOTING ROOF DRAIN ON 13 ALL BUILDINGS. QTY TBV. 14 SPU350614 6 SDR35 D3034 GSK PVC GREEN PIPE 14' 5,292 15 SF445060 6 SDR35 SANDED MH ADAPTER GASKETED 33 16 SFSW406060 6 SDR35 SW SHORT TURN 90 HXH 240 17 SFSW417060 6 SDR35 SW 45 HXH 1 18 SFSW416060 6 SDR35 SW 22 1/2 HXH 1 19 SFSW401060 6X6 SDR35 SW TEE 21 20 SFSW475060 6 SDR35 SW WYE HXHXH 4 21 22 FOOTING DRAIN NOTE: PER DTL 1, SHEET C3.6. QUOTING FOOTING DRAIN 23 MATERIALS FOR EACH BUILDING. QTYS TBV. 24 SPPU350410 4 SDR35 D3034 SW PERF WHITE PVC PIPE 10' 4,960 25 HBJAMO4545-5X360 5' X 360' AMOCO 4545 NON WOVEN 1 26 NOTE: PRICE PER EACH. QTY TBV. 27 SFSW406040 4 SDR35 SW SHORT TURN 90 HXH 246 28 29 YARD DRAIN 30 NOTE: PER DTL 7, SHEET C3.6. 31 CPN121820 18 ADS AASHTO N-12 WATERTIGHT SOLID PIPE 20' 100 NOTE: QUOTING ADS N-12 PIPE AS ALTERNATIVE TO 32 CONCRETE FOR YARD DRAIN. SUBJECT TO APPROVAL. 33 AMCOF101800 18" C.I. GRATE FOR ADS PIPE 21 34 35 OWS BASIN (13) NOTE: PER COA DTL SD-120. STRUCTURES AND VENT 36 HOLE BY OTHERS. 37 SFSW401060 6X6 SDR35 SW TEE 13 38 SF449060 6 SDR35 PLUG 13 39 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 13 40 41 INFILTRATION DRAIN 42 NOTE: PER DTL 8, SHEET C3.6. 43 SPU350814 8 SDR35 D3034 GSK PVC GREEN PIPE 14' 28 44 SPU350614 6 SDR35 D3034 GSK PVC GREEN PIPE 14' 1,050 45 SPPU3506 6 SDR35 D3034 SW PERF WHITE PVC PIPE 20' 4,540 46 HBJAMO4547 GEO 451-15'X360' NON WOVEN 140N 1 47 NOTE: PRICE PER EACH. QTY TBV. 48 SF445080 8 SDR35 SANDED MH ADAPTER GASKETED 1 49 SF445060 6 SDR35 SANDED MH ADAPTER GASKETED 20 50 SFSW429585 8X6 SDR35 SW CONCENTRIC REDUCER HXH 1 51 SFSW406060 6 SDR35 SW SHORT TURN 90 HXH 66 52 SFSW417060 6 SDR35 SW 45 HXH 9 53 SFSW420060 6" S/W CROSS 226-0066 (4) 5 54 SFSW401060 6X6 SDR35 SW TEE 95 55 SFSW475060 6 SDR35 SW WYE HXHXH 1 56 SFSW447060 6 SDR35 SW CAP 2 57 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 1 58 59 6" INFILTRATION CLEANOUT (146) NOTE: PER COA DTL SS-080. QUOTING ONE CLEANOUT PER EACH 90 DEGREE BEND AND PIPE CONNECTION. QTY 60 TBV. 61 SFSW475060 6 SDR35 SW WYE HXHXH 146 62 SFSW419060 6 SDR35 SW 45 HXS 146 63 PLTT06 6 IPS CORP TWIST-TITE MECH TEST PLUG 146 64 AMCOF146251SET 11 X 8 LOCKING CLEANOUT R&C 146 65 NOTE: QTY TBV. 66 67 OVERFLOW PIPE 68 SPU351214 12 SDR35 D3034 GSK PVC GREEN PIPE 14' 84 69 SF445120 12 SDR35 SANDED MH ADAPTER GASKETED 1 70 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 1 71 72 WALL DRAIN NOTE: NO WALL DRAIN DETAIL AVAILABLE. QUOTING PER 73 DTL 1, SHEET C3.6. ALL MATERIALS TBV. 74 SPPU3506 6 SDR35 D3034 SW PERF WHITE PVC PIPE 20' 1,350 75 HBJAMO4545-5X360 5' X 360' AMOCO 4545 NON WOVEN 1 76 NOTE: PRICE PER ROLL. QTY TBV. 77 SFSW406060 6 SDR35 SW SHORT TURN 90 HXH 1 78 NOTE: PRICE PER EACH. QTY TBV. 79 SFSW417060 6 SDR35 SW 45 HXH 1 80 NOTE: PRICE PER EACH. QTY TBV. 81 SFSW416060 6 SDR35 SW 22 1/2 HXH 1 82 NOTE: PRICE PER EACH. QTY TBV. 83 84 *** SEWER *** 85 86 SEWER MAIN 87 NOTE: SEWER STRUCTURES BY OTHERS. 88 SPU350814 8 SDR35 D3034 GSK PVC GREEN PIPE 14' 1,232 89 CTAPE06DETSW 6 DETECTABLE TAPE GREEN SEWER 2,000 90 AMCOF112910ASET MH30DT 24" LKG R&C MRKD SEWER 9 91 92 SEWER SIDE 93 SPU350814 8 SDR35 D3034 GSK PVC GREEN PIPE 14' 728 94 SPU350614 6 SDR35 D3034 GSK PVC GREEN PIPE 14' 154 95 CTAPE06DETSW 6 DETECTABLE TAPE GREEN SEWER 1,000 96 HBJCBKNS6 6" KOR-N-SEAL BOOT (S106-12B) 1 97 NOTE: FOR CONNECTION TO EXISTING SSMH. 98 SF447080 8 SDR35 GSK CAP 14 99 SF475060 6X6 SDR35 GSK WYE 1 100 SF447060 6 SDR35 GSK CAP 2 101 102 8" SEWER CLEANOUT (12) 103 NOTE: PER COA DTL SS-080. 104 SF475080 8X8 SDR35 GSK WYE 12 105 SF419080 8 SDR35 45 BXS 12 106 PLTT08 8 IPS CORP TWIST-TITE MECH TEST PLUG 12 107 AMCOF146251SET 11 X 8 LOCKING CLEANOUT R&C 12 108 109 6" SEWER CLEANOUT 110 NOTE: PER COA DTL SS-080. 111 SF475060 6X6 SDR35 GSK WYE 1 112 SF419060 6 SDR35 45 BXS 1 113 PLTT06 6 IPS CORP TWIST-TITE MECH TEST PLUG 1 114 AMCOF146251SET 11 X 8 LOCKING CLEANOUT R&C 1 115 116 *** WATER *** 117 118 CONNECTION TO EXISTING WATER (2) 119 ZFTG0003519 12X12 HOT TAP SS 1 120 ZFTG0003520 12X6 HOT TAP SS 1 NOTE: HOT TAP COST INCLUDES TAPPING SLEEVE, GATE 121 VALVE, CONNECTING MATERIALS AND LABOR. 122 HBJVBBASE24 VALVE BOX 24" BASE ONLY 2 123 HBJVB94018TOP 940 18" VLV.BOX TOP ONLY W/ EARS 2 124 HBJVB940LID 940 VALVE BOX LID ONLY ("WATER") 2 125 126 WATER MAIN 127 DITJMD12052 12 MCWANE TYTON CL52 DI PIPE 1,602 128 HBJIFACCLOCKGSK12 12" FIELD LOCK GASKET 89 129 WWIMJ9012 12 MJ 90 ELL IMP 3 130 WWIMJ4512 12 MJ 45 ELL IMP 2 131 WWIMJT1212 12X12 MJ TEE IMP 3 132 WWIMJCP12 12 MJ SOLID CAP IMP 1 133 WWIMJFT1206 12X6 MJXFLG TEE IMP 18 134 RSSTARIDI120 12 STAR STARGRIP 3000P DI RESTRAINT KIT IMP 56 135 136 2" FIRELINE 137 VGVEJFL060FMNL 6 EJ FLOWMASTER FLGXFLG NRS AWWA C515 OL GV 14 138 HBJVBBASE24 VALVE BOX 24" BASE ONLY 14 139 HBJVB94018TOP 940 18" VLV.BOX TOP ONLY W/ EARS 14 140 HBJVB940LID 940 VALVE BOX LID ONLY ("WATER") 14 141 WWIFLTPT060020 6X2 DI TAPT FLANGE IMP 14 142 WWC8477QNL 2 FORD MIP X QJ CTS CPLG NL 30 143 CBAY6133T20 2 AY CTS PE INSERT 44 144 HBJPEP2CTS100 2" X 100' CTS POLY PIPE 800 145 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 1,000 146 PLBR408020NL 2 BRASS 90 IMP NL 8 147 WWC1477QNL 2 FORD FIP X QJ CTS CPLG NL 14 148 450020 2 SCH40 PLUG MIP 14 149 HBJIFFLPACK6S 6" FLG PACK W/SEAL-TITE RING 28 150 NOTE: SUBJECT TO APPROVAL. 151 152 HYDRANT ASSEMBLY (6) 153 NOTE: PER COA DTL W-010. 154 VGVEJMF060FML 6 EJ FLOWMASTER MJXFLG NRS AWWA C515 OL GV 5 155 HBJVBBASE24 VALVE BOX 24" BASE ONLY 5 156 HBJVB94018TOP 940 18" VLV.BOX TOP ONLY W/ EARS 5 157 HBJVB940LID 940 VALVE BOX LID ONLY ("WATER") 5 158 DITJMD06052 6 MCWANE TYTON CL52 DI PIPE 126 159 HBJIFACCLOCKGSK6 6" FIELD LOCK GASKET 4 160 NBROD07120 3/4 X 10'0 ALL THREAD ROD PLATED 24 161 HBJIFACCEYEBOLT 3/4" X 3-1/2" MJ EYEBOLT W/NUT 24 162 NBWA007 3/4 PLATED WASHER 24 163 NBNUT007 3/4 PLATED HEX NUT 24 164 NBRC07 3/4 ROD COUPLING PLATED 14 165 HBJPB12X12X4 HYDRANT BLOCK 12"X12"X4" 6 166 HWWEJ5CD250MJ54YSA EJ WATERMASTER HYD 4'6 BRY 6 MJ SAFETY YELLOW 6 167 NOTE: BURY DEPTH TBV. COST VARIES. 168 HBJSTORZ412NSTX5 4-1/2" NST X 5" STORZ NZL-CAP 6 169 RSSTARIDI060 6 STAR STARGRIP 3000P DI RESTRAINT KIT IMP 12 170 HBJIFFLPACK6S 6" FLG PACK W/SEAL-TITE RING 5 171 NOTE: SUBJECT TO APPROVAL. 172 173 2" WATER SERVICE (14) 174 NOTE: PER COA DTL W-050. 175 WWSDLFCD2021439CC7 12X2CC FORD FCD202 SDL 1262-1439 14 176 WWFB1000Q20NL 2 FORD CCXQJ CTS BALLCORP NL 14 177 CBAY6133T20 2 AY CTS PE INSERT 71 178 HBJPEP2CTS100 2" X 100' CTS POLY PIPE 900 179 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 1,000 180 WWC8477QNL 2 FORD MIP X QJ CTS CPLG NL 44 181 WWVBH8712B1177NL 2 FORD VBH87-12B-11-77 COPPERSETTER NL 14 182 887170 2X17 SCH80 PVC NIPPLE TBE 14 183 SV-FREIGHT-VENDOR APPROX. FREIGHT ON NON-STOCK PVC FITTINGS 1 184 VBW17302520 CARSON HW 1730-18 BLACK BOX W/MSHL 14 185 HBJMIDST1730RLIDT 1730 DI RDR LID W/2" AMR (4"X4") 14 NOTE: QUOTING 2" AMR AS ALTERNATIVE TO 1-3/4" 186 AMR. SUBJECT TO APPROVAL. 187 PLBR408020NL 2 BRASS 90 IMP NL 8 188 WWC1477QNL 2 FORD FIP X QJ CTS CPLG NL 14 189 450020 2 SCH40 PLUG MIP 14 190 191 1" WATER SERVICE 192 NOTE: PER COA DTL W-040. 193 WWSDLFCD2021439CC4 12X1CC FORD FCD202 SDL 1262-1439 1 194 WWFB1000Q10NL 1 FORD CCXQJ CTS BALLCORP NL 1 195 CBAY6133T10 1 AY CTS PE INSERT 6 196 HBJPEP1CTS100 1" X 100' CTS SIZE POLY PIPE 200 197 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 500 198 WWBA43444WQNL 1 FORD QJ CTS X MTR ANG BV NL 1 199 ZFTG0003521 1 FORD QJ CTS X MTR ANG CV NL 1 200 VBW13242520 CARSON HW 1324-18 BLACK BOX W/MSHL 1 201 HBJMIDST1324RLID4 1324 DI RDR LID W/2" AMR (4"X4") 1 NOTE: QUOTING 2" AMR AS ALTERNATIVE TO 1-3/4" 202 AMR. SUBJECT TO APPROVAL. 203 WWC4444QNL 1 FORD QJ CTS X QJ CTS CPLG NL 1 204 WWC1444QNL 1 FORD FIP X QJ CTS CPLG NL 1 205 450010 1 SCH40 PLUG MIP 1 206 207 1" IRRIGATION SERVICE 208 NOTE: PER COA DTL W-040. 209 WWSDLFCD2021439CC4 12X1CC FORD FCD202 SDL 1262-1439 1 210 WWFB1000Q10NL 1 FORD CCXQJ CTS BALLCORP NL 1 211 CBAY6133T10 1 AY CTS PE INSERT 4 212 HBJPEP1CTS100 1" X 100' CTS SIZE POLY PIPE 100 213 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 500 214 WWBA43444WQNL 1 FORD QJ CTS X MTR ANG BV NL 1 215 ZFTG0003522 1 FORD QJ CTS X MTR ANG CV NL 1 216 VBW17302520 CARSON HW 1730-18 BLACK BOX W/MSHL 1 217 HBJMIDST1324RLID4 1324 DI RDR LID W/2" AMR (4"X4") 1 NOTE: QUOTING 2" AMR AS ALTERNATIVE TO 1-3/4" 218 AMR. SUBJECT TO APPROVAL. 219 WWC1444QNL 1 FORD FIP X QJ CTS CPLG NL 1 220 450010 1 SCH40 PLUG MIP 1 ***STORM*** Heritage Plasticsâ„¢ PVC Gasketed Sewer Pipe â€¢ ASTM D 3034 SDR 35 â€¢ Gasketed bells â€¢ 14 and 20-foot lay lengths â€¢ OD bevel on spigot â€¢ Green in color Average Approximate Weight Standard Crate Trade Part Length O.D. per 100â€™ Quantity Size Number (feet) (inches) (lbs) (feet) 3040014G 14 1,176 4 4.215 107 3040020G 20 1,680 3060014G 14 490 6 6.275 244 3060020G 20 700 3080014G 14 280 8 8.400 445 3080020G 20 400 10 30100014G 14 10.500 699 154 12 30120014G 14 12.500 1,003 154 15 30150014G 14 15.300 1,491 112 NOTE: Special orders are non-cancelable, non-returnable and non-refundable. heritageplastics.com 14 4" - 27" GASKETED SEWER FITTINGS Fittings are manufactured to ASTM D 3034 SDR 35, ASTM F 679 and ASTM F 1336 specifications. PART LB/ PART LB/ SIZE NUMBER 100 (J) (L) (L1) SIZE NUMBER 100 (J) (L) (L1) 8x4* 988-0084 926 6.18 6.30 10.00 FULL 24x8 115-0248 14000 23.87 24.62 23.00 8x6* 988-0086 997 6.18 6.32 10.00 & 27x4 115-0274 16600 24.25 24.00 20.50 10x4 713-0104 1420 7.50 9.75 11.00 REDUCING 27x6 115-0276 17600 25.25 25.50 22.50 10x6 713-0106 1660 9.00 11.63 13.00 DOUBLE WYE 27x8 115-0278 19500 27.25 27.00 26.50 12x4 713-0124 1940 7.50 12.25 11.00 GxGxGxG 12x6 713-0126 2230 9.00 12.63 13.00 (L) (S) (SD) 15x4 713-0154 3010 8.25 12.00 12.50 4 125-0004 88 .75 4.50 2.75 15x6 713-0156 3360 9.75 14.00 14.50 6 125-0006 199 1.00 3.75 3.75 18x4 713-0184 5370 9.37 13.75 14.75 8 125-0008 426 1.63 4.50 4.38 18x6 713-0186 5910 10.87 15.75 16.75 10 125-0010 725 1.75 5.25 5.00 21x4 713-0214 7970 9.00 15.50 14.00 12 125-0012 1114 2.00 6.25 5.00 PSM G 21x6 713-0216 8530 10.50 17.50 16.00 15 125-0015 2030 2.75 8.00 5.25 X 24x4 713-0244 11470 10.50 16.75 17.00 18 125-0018 3300 3.00 9.12 7.00 SCH40 H 24x6 713-0246 12130 12.00 18.75 19.00 21 125-0021 5400 3.25 10.25 8.50 T-Y 27x4 713-0274 16570 12.25 18.50 20.50 ADAPTER SxG 24 125-0024 8330 4.00 13.50 9.00 27x6 713-0276 17430 13.75 20.25 22.50 27 125-0027 11600 4.50 14.75 10.00 (J) (L) (L1) 6x4 115-0064 600 7.38 8.75 8.75 (L) (L1) 6x6 115-0066 935 9.88 10.13 13.50 4 116-0004 105 8.00 .75 8x4 115-0084 970 9.38 10.25 10.25 6 116-0006 225 8.00 1.00 8x6 115-0086 1285 10.38 11.75 12.25 8* 116-0008 375 7.85 .38 8x8 115-0088 1870 12.38 13.13 16.25 10 116-0010 595 8.00 1.25 10x4 115-0104 1425 10.75 11.75 11.00 12 116-0012 850 8.00 1.25 10x6 115-0106 1800 11.75 13.25 13.00 15 116-0015 1290 8.00 1.25 10x8 115-0108 2535 13.75 14.63 17.00 18 116-0018 1600 8.00 2.00 10x10 115-1010 3975 15.25 16.88 20.00 21 116-0021 2300 8.00 2.00 12x4 115-0124 2010 11.75 13.00 11.00 24 116-0024 3000 8.00 2.00 12x6 115-0126 2325 12.75 14.50 13.00 27 116-0027 4000 8.00 3.00 MANHOLE 12x8 115-0128 3135 14.75 15.88 17.00 ADAPTER 12x10 115-1210 4200 16.25 18.13 20.00 12x12 115-1212 5400 17.75 20.63 23.00 (C) (H) (D) 15x4 115-0154 3000 14.00 15.00 12.50 6x4 126-0064 500 7.00 5.88 3.25 15x6 115-0156 3500 15.00 16.50 14.50 6x6 126-0066 725 8.00 5.75 4.25 15x8 115-0158 4360 17.00 17.88 18.50 8x4 126-0084 875 8.50 7.00 4.13 15x10 115-1510 5675 18.50 20.13 21.50 8x6 126-0086 1115 9.50 7.00 5.13 15x12 115-1512 6875 20.00 22.63 24.50 8x8 126-0088 1600 11.00 7.75 6.63 15x15 115-1515 8775 22.50 25.00 29.50 10x4 126-0104 1310 9.50 8.00 4.50 18x4 115-0184 5400 16.70 17.50 14.75 10x6 126-0106 1800 10.50 8.25 5.50 18x6 115-0186 6000 17.70 19.00 16.75 10x8 126-0108 2535 11.50 8.38 6.50 18x8 115-0188 7200 19.70 20.37 20.75 10x10 126-1010 3975 12.50 8.75 7.50 FULL FULL 21x4 115-0214 7900 18.00 19.75 14.00 12x4 126-0124 2010 9.50 9.00 4.50 & & 21x6 115-0216 8700 19.00 21.25 16.00 12x6 126-0126 2325 10.50 9.75 5.50 REDUCING REDUCING 21x8 115-0218 10100 21.00 22.62 20.00 12x8 126-0128 3135 11.50 10.38 6.50 DOUBLE WYE CROSS 24x4 115-0244 11700 20.87 21.75 17.00 12x10 126-1210 4200 12.50 9.75 7.50 GxGxGxG GxGXGXG 24x6 115-0246 12400 21.87 23.25 19.00 12x12 126-1212 3905 13.50 10.75 8.50 *DENOTES MOLDED FITTING. ALL OTHERS ARE FABRICATED. 410 13 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS 1.0 GPK PVC Sewer Fittings shall be manufactured in accordance with either ASTM D 3034, F1336 or F 679. The PVC material shall have a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D 1784. 2.0 The purpose of GPK in-line fittings is to convey municipal sanitary and industrial wastes, storm water runoff and many other related applications. They are designed to be used in gravity flow and low pressure applications not to exceed 10.8 psi. (74.5 kPa). 3.0 Injection Molded Fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated Fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. A fabricated fitting is considered any fitting made from pipe or a combination of pipe and molded components. 4.0 Chemical Resistance GPK fittings resist attack from certain alcohols, alkalies, salt solutions, acids and other types of chemicals. Refer to chemical resistant chart for suitability. 5.0 Marking. GPK fittings shall be marked with applicable size, â€œPVCâ€, company name or logo, PSM and the ASTM specification number (D 3034, F 1336 or F679). The fittings and/or packaging shall include the manufacturerâ€™s date and shIft code. 6.0 Testing. A test after installation of either low pressure air (Uni-B-6) or a water infiltration-exfiltration test is recommended. 7.0 Deflection Test. The maximum allowable pipe fitting deflection should be 7 Â½% of base ID as shown in table X1.1 of D 3034, and X2.1 of F 679. 8.0 Backfilling and Tamping. Backfilling should follow closely after assembly of pipe and fittings. 8.1 Backfilling. with proper material is important to achieve desired density in haunching area which enables pipe, fitting and soil to work together to meet designed load requirements. This eliminates excess deflection and shear breaks due to heavy loads. Approved material shall be used properly, compacted continuously above and around the pipe and fittings as well as between fitting and trench wall. A cushion of approved material up to a minimum of 12â€ (305mm) over the fittings and between the trench walls shall be applied in accordance with the engineersâ€™ specifications. 8.2 Tamping. This shall be done by hand tamping of the embedment material between the trench wall of the service line fitting and riser connection. Tamping can also be done by mechanical tampers or by using water to consolidate the embedment material. Extreme unstable ground conditions may require wider trenches to enable you to compact a larger area around the pipe and fittings to the density consistent of the original ground surface conditions. 9.0 Service Lines. Normally, service lines from the property line to the collection sewer should be a minimum depth of 3 feet (1 meter) at the property line and should be laid in straight alignment and uniform slope of not less than Â¼â€ per foot (20.8mm/meter) for 4â€ (100mm) nominal pipe and 1/8â€ (10.4mm/meter) per foot for 6â€ (150mm) pipe. Where collection sewers are deeper than 7 feet (2 meters) a vertical standpipe or stack is permitted but not recommended, consult the project engineer for proper installation details. Deep sewer chimney and risers necessitate extreme care during backfilling. Where surface loading is 1 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS anticipated the final backfill must be compacted to a density compatible with those surface loads to be encountered. 9.1 Backfilling around pipe service laterals on slope. Extra attention should be given on slopes to prevent the newly backfilled trench from becoming a â€œFrench Drainâ€. Before backfilling completely there is a tendency for ground and surface water to follow the direction of the looser soil. This flow may wash out soil from under or around pipe and branch line fittings, reducing or eliminating the support needed. To avoid this problem the backfilling should be of greater compaction. Tamping should be done in 4â€ (100mm) layers and continued in this manner all the way up to the ground or surface line of the trench. Concrete collars or other concrete poured around the fitting to stabilize unwanted movement is recommended to prevent water from undercutting the underside of the pipe and fittings. Summary: Due to various ground conditions and different situations, installation techniques vary widely. We warranty our products to be free of manufacturerâ€™s defects. We will not replace the products that are installed or used incorrectly. The design of the systems that our product is used in is a factor that cannot be overlooked. Intro: GPK manufactures PVC sewer fittings in accordance with either ASTM D 3034, F 1336 or F 679 to be used in gravity flow or low pressure applications. Injection molded fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. Material: Fabricated fittings are manufactured from PVC pipe and molded components meeting the requirements of either ASTM D 3034, F 1336 or F 679 for workmanship, extrusion quality, stiffness, impact resistance, dimensions and structural performance. Extruded pipe components are made from PVC material with a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D1784. Injection molded fittings are made from PVC material with a minimum cell classification of 12454 or 13343 as defined in ASTM D 1784. Extrusion Quality: Extruded components are tested in accordance with and meet the requirements of ASTM D 2152 for properly fused PVC. Impact Resistance: Extruded Components are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ â€“ 5â€ 150 Ft-Lbs 6â€ â€“ 8â€ 210 Ft-Lbs 10â€ â€“ 36â€ 220 Ft-Lbs (100mm â€“ 125mm 203 J) (150mm â€“ 200mm 284 J) (250mm â€“ 973mm 299 J) Impact Resistance: Injection molded fittings are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ 50 Ft-Lbs 6â€ â€“ 8â€ 75 Ft-Lbs 10â€ â€“ 12â€ 90 Ft-Lbs (100mm 68 J) (150mm â€“ 200mm 102 J) (250mm â€“ 300mm 122 J) Pipe Stiffness: Extruded Components are tested in accordance with ASTM D 2412. The stiffness equals or exceeds the requirements of ASTM D 3034 and F 679. 2 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS Pipe Flattening: Extruded components are flattened as described in ASTM D 3034 and F 679 until the distance between the plates is 40% of the outside diameter of the pipe. There shall be no splitting, cracking or breaking. Pressure/Pressure Deflection: Gasketed joints are tested in accordance with ASTM D 3212. Pressure: 10 minutes @ 10.8 psi (74.5 kPa) + 10 minutes deflected @ 10.8 psi (74.5 kPa). Vacuum: 10 minutes @ 22 in. Hg (74 kPa) + 10 minutes deflected @ 22 in. Hg (74kPa). Branch Bending: The chemically fused areas around the fabricated branches of tee, wye and tee-wye fittings are tested to ASTM F 1336 to verify their strength and integrity. Pipe Stop Support: Tee and tee-wye fittings are tested to requirements of ASTM F 1336 for pipe stop load support. No cracking or splitting shall occur and pipe spigot shall not protrude into waterway of the fitting. Joining Methods: Chemically Fused Solvent Weld Joints Solvent cement is handled and tested in accordance with ASTM D 2564 and D 2855. The Lap Shear Strength shall equal or exceed 900 psi (6205 kPa) @ 72 hours. Heat Fusion Welded Joints (Butt Fusion Welds) Elastomeric Seals (Gaskets) Must meet all requirements of ASTM F 477 and D 3212. Saddles: Injection Molded saddle tees and saddle wyes shall have skirts with a minimum of 80 square inches (516 square cm) surface area which can be bonded to pipe. Fabricated saddle tees and saddle wyes shall have skirts with a minimum of 160 square inches (1032 square cm) surface area which can be bonded to pipe. The worm drive saddle straps used to fasten the saddles are manufactured with corrosion resistant 300 series AISI stainless steel. GPK does not recommend gasket skirts where air tests are required. Epoxy Reinforced Welds. Threads: Threads shall be American National Standard Taper Pipe Threads (ANSI B1.20.1) which shall be gauged in accordance with ASTM Method D-2122. 3 | P a g e 811 Â® SDR 35 PVC Sewer Pipe Solvent Weld Sewer Pipe (Perforated or Solid) Conforms to ASTM D 3034 & ASTM D 1784, cell class 12454 or 12364 Solid-wall pipe conforms to ASTM D 3034, â€œStandard Specification for PVC Sewer Pipe and Fittingsâ€. Perforated SDR 35 sewer pipe meets the requirements of ASTM D 3034 prior to perforation. Proper hole positioning is assured by centering pipe printline at top. Product manufactured with one integral solvent-weld bell standard per length. Plain end may be available. All pipe is produced in 20-foot lengths. 10-foot lengths may be available. Minimum Approximate Standard Part Number Dimensions (inches) Wall Weight Crate Solid Perforated Size Length OD (Avg) ID (Approx) (inches) per 100â€™ Quantity 3040010 3040010F 4â€ 10â€™ 4.215 3.95 0.120 100 630 3040020 3040020F 4â€ 20â€™ 4.215 3.95 0.120 100 1,260 3060010 3060010F 6â€ 10â€™ 6.275 5.88 0.180 222 260 3060020 3060020F 6â€ 20â€™ 6.275 5.88 0.180 222 520 LOCATION OF PRINT LINE AND PERFORATIONS PRINT LINE 120Â° HOLE 120Â° Perforation Specifications: Two rows of Â½â€ diameter holes with hole spacing of 5â€ center-to-center. Rows are 120Â° apart. 2220 Nugget Way - Eugene, OR 97403 - Phone (877) 811-7473 - Fax (541) 746-6111 I-805 (06/12) SSttyyllee 44554455 Propex 4545 is a polypropylene nonwoven needlepunched fabric. This engineered geotextile is stabilized to resist degradation due to ultraviolet exposure. It is resistant to commonly encountered soil chemicals, mildew and insects, and is non-biodegradable. Polypropylene is stable within a pH range of 2 to 13, making it one of the most stable polymers available for geotextiles today. We wish to advise that Propex 4545 meets the following minimum average roll values: Property Test Method Minimum Average Minimum Average Roll Value Roll Value (English) (Metric) Grab Tensile ASTM-D-4632 90 lbs 0.400 kN Grab Elongation ASTM-D-4632 50 % 50 % Mullen Burst ASTM-D-3786 185 psi 1275 kPa Puncture ASTM-D-4833 55 lbs 0.240 kN Trapezoidal Tear ASTM-D-4533 40 lbs 0.175 kN UV Resistance ASTM-D-4355 70 % at 500 hrs 70 % at 500 hrs AOS(1) ASTM-D-4751 70 sieve 0.212 mm Permittivity ASTM-D-4491 1.8 sec-1 1.8 sec-1 Flow Rate ASTM-D-4491 130 gal/min/ft2 5290 L/min/m2 (1). max. average roll value Propex Fabrics Inc. manufacturers the nonwoven fabric indicated above. The values listed are a result of testing conducted in on-site laboratories. DATE ISSUED: 03/04/05 Propex Fabrics Inc. 260 The Bluffs Austell, GA 30168 PH: 770-944-4569 PH: 800.445.7732 FX: 770.944.4584 (Quotes) FX: 770.944.4678 (Technical) www.geotextile.com Exclusion of Liability This publication should not be construed as engineering advice. While information contained in this publication is accurate to the best of our knowledge, Propex Fabrics Inc. does not warrant its accuracy or completeness. The only warranty made by Propex Fabrics for its products is set forth in our Certificate of Compliance that accompanies our shipment of the product, or such other written warranty as may be agreed by Propex Fabrics and individual customers. Propex Fabrics specifically disclaims all other warranties, express or implied, including without limitation, warranties of merchantability or fitness for a particular purpose, or arising from provision of samples, a course of dealing or usage of trade. ADS, Inc. Drainage Handbook Specifications â™¦ 1-9 ________________________________________________________________________________________________ Â® ADS N-12 WT IB PIPE (per AASHTO) SPECIFICATION Scope This specification describes 4- through 60-inch (100 to 1500 mm) ADS N-12 WT IB pipe (per AASHTO) for use in gravity-flow applications. Pipe Requirements N-12 WT IB pipe (per AASHTO) shall have a smooth interior and annular exterior corrugations. â€¢ 4- through 10-inch (100 to 250 mm) shall meet AASHTO M252, Type S. â€¢ 12- through 60-inch (300 to 1500 mm) shall meet AASHTO M294, Type S or ASTM F2306. â€¢ Manningâ€™s â€œnâ€ value for use in design shall be 0.012. Joint Performance Pipe shall be joined with the N-12 WT IB joint meeting the requirements of AASHTO M252, AASHTO M294, or ASTM F2306. 4- through 60-inch (100 to 1500 mm) shall be watertight according to the requirements of ASTM D3212. Gaskets shall meet the requirements of ASTM F477. Gaskets shall be installed by the pipe manufacturer and covered with a removable, protective wrap to ensure the gasket is free from debris. A joint lubricant available from the manufacturer shall be used on the gasket and bell during assembly. 12- through 60-inch (300 to 1500 mm) diameters shall have a reinforced bell with a polymer composite band. The bell tolerance device shall be installed by the manufacturer. Fittings Fittings shall conform to AASHTO M252, AASHTO M294, or ASTM F2306. Bell and spigot connections shall utilize a spun-on or welded bell and valley or saddle gasket meeting the watertight joint performance requirements of AASHTO M252, AASHTO M294 or ASTM F2306. Field Pipe and Joint Performance To assure watertightness, field performance verification may be accomplished by testing in accordance with ASTM F2487. Appropriate safety precautions must be used when field-testing any pipe material. Contact the manufacturer for recommended leakage rates. Material Properties Virgin material for pipe and fitting production shall be high-density polyethylene conforming with the minimum requirements of cell classification 424420C for 4- through 10-inch (100 to 250 mm) diameters, and 435400C for 12- through 60-inch (300 to 1500 mm) diameters, as defined and described in the latest version of ASTM D3350, except that carbon black content should not exceed 4%. The 12- through 60-inch (300 to 1500 mm) virgin pipe material shall comply with the notched constant ligament-stress (NCLS) test as specified in Sections 9.5 and 5.1 of AASHTO M294 and ASTM F2306 respectively. Installation Installation shall be in accordance with ASTM D2321 and ADS recommended installation guidelines, with the exception that minimum cover in trafficked areas for 4- through 48-inch (100 to 1200 mm) diameters shall be one foot. (0.3 m) and for 54- and 60-inch (1350 and 1500 mm) diameters, the minimum cover shall be 2 ft. (0.6 m) in single run applications. Backfill for minimum cover situations shall consist of Class 1, Class 2 (minimum 90% SPD) or Class 3 (minimum 90%) material. Maximum fill heights depend on embedment material and compaction level; please refer to Technical Note 2.01. Contact your local ADS representative or visit our website at www.ads-pipe.com for a copy of the latest installation guidelines. Pipe Dimensions Nominal Diameter, in (mm) Pipe I.D. 4 6 8 10 12 15 18 24 30 36 42 48 54* 60 in (mm) (100) (150) (200) (250) (300) (375) (450) (600) (750) (900) (1050) (1200) (1350) (1500) Pipe O.D.** 4.8 6.9 9.1 11.4 14.5 18 22 28 36 42 48 54 61 67 in (mm) (122) (175) (231) (290) (368) (457) (559) (711) (914) (1067) (1219) (1372) (1549) (1702) Perforations All diameters available with or without perforations *Check with sales representative for availability by region. **Pipe O.D. values are provided for reference purposes only, values stated for 12- through 60-inch are Â± 1 inch. Contact a sales representative for exact values. Â© ADS, Inc., October 2009 ADS, Inc. Drainage Handbook Specifications â™¦ 1-10 ________________________________________________________________________________________________ Â® N-12 WT IB (per AASHTO) JOINT SYSTEM (Joint configuration & availability subject to change without notice. Product detail may differ slightly from actual product appearance.) Â© ADS, Inc., October 2009 NOTES: OLYMPIC FOUNDRY INC. 18" ADS YARD DRAIN GRATE MATL: Cast Iron ASTM A48, CL30 RATING: N/A PART NO. 10-1800 APPROX WT: 59 Lbs REV: A DATE: 6/23/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 6/23/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 6/23/2003 DWG #: 18 ADS YARD DRAIN SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG ***SEWER*** Heritage Plasticsâ„¢ PVC Gasketed Sewer Pipe â€¢ ASTM D 3034 SDR 35 â€¢ Gasketed bells â€¢ 14 and 20-foot lay lengths â€¢ OD bevel on spigot â€¢ Green in color Average Approximate Weight Standard Crate Trade Part Length O.D. per 100â€™ Quantity Size Number (feet) (inches) (lbs) (feet) 3040014G 14 1,176 4 4.215 107 3040020G 20 1,680 3060014G 14 490 6 6.275 244 3060020G 20 700 3080014G 14 280 8 8.400 445 3080020G 20 400 10 30100014G 14 10.500 699 154 12 30120014G 14 12.500 1,003 154 15 30150014G 14 15.300 1,491 112 NOTE: Special orders are non-cancelable, non-returnable and non-refundable. heritageplastics.com 14 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS 1.0 GPK PVC Sewer Fittings shall be manufactured in accordance with either ASTM D 3034, F1336 or F 679. The PVC material shall have a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D 1784. 2.0 The purpose of GPK in-line fittings is to convey municipal sanitary and industrial wastes, storm water runoff and many other related applications. They are designed to be used in gravity flow and low pressure applications not to exceed 10.8 psi. (74.5 kPa). 3.0 Injection Molded Fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated Fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. A fabricated fitting is considered any fitting made from pipe or a combination of pipe and molded components. 4.0 Chemical Resistance GPK fittings resist attack from certain alcohols, alkalies, salt solutions, acids and other types of chemicals. Refer to chemical resistant chart for suitability. 5.0 Marking. GPK fittings shall be marked with applicable size, â€œPVCâ€, company name or logo, PSM and the ASTM specification number (D 3034, F 1336 or F679). The fittings and/or packaging shall include the manufacturerâ€™s date and shIft code. 6.0 Testing. A test after installation of either low pressure air (Uni-B-6) or a water infiltration-exfiltration test is recommended. 7.0 Deflection Test. The maximum allowable pipe fitting deflection should be 7 Â½% of base ID as shown in table X1.1 of D 3034, and X2.1 of F 679. 8.0 Backfilling and Tamping. Backfilling should follow closely after assembly of pipe and fittings. 8.1 Backfilling. with proper material is important to achieve desired density in haunching area which enables pipe, fitting and soil to work together to meet designed load requirements. This eliminates excess deflection and shear breaks due to heavy loads. Approved material shall be used properly, compacted continuously above and around the pipe and fittings as well as between fitting and trench wall. A cushion of approved material up to a minimum of 12â€ (305mm) over the fittings and between the trench walls shall be applied in accordance with the engineersâ€™ specifications. 8.2 Tamping. This shall be done by hand tamping of the embedment material between the trench wall of the service line fitting and riser connection. Tamping can also be done by mechanical tampers or by using water to consolidate the embedment material. Extreme unstable ground conditions may require wider trenches to enable you to compact a larger area around the pipe and fittings to the density consistent of the original ground surface conditions. 9.0 Service Lines. Normally, service lines from the property line to the collection sewer should be a minimum depth of 3 feet (1 meter) at the property line and should be laid in straight alignment and uniform slope of not less than Â¼â€ per foot (20.8mm/meter) for 4â€ (100mm) nominal pipe and 1/8â€ (10.4mm/meter) per foot for 6â€ (150mm) pipe. Where collection sewers are deeper than 7 feet (2 meters) a vertical standpipe or stack is permitted but not recommended, consult the project engineer for proper installation details. Deep sewer chimney and risers necessitate extreme care during backfilling. Where surface loading is 1 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS anticipated the final backfill must be compacted to a density compatible with those surface loads to be encountered. 9.1 Backfilling around pipe service laterals on slope. Extra attention should be given on slopes to prevent the newly backfilled trench from becoming a â€œFrench Drainâ€. Before backfilling completely there is a tendency for ground and surface water to follow the direction of the looser soil. This flow may wash out soil from under or around pipe and branch line fittings, reducing or eliminating the support needed. To avoid this problem the backfilling should be of greater compaction. Tamping should be done in 4â€ (100mm) layers and continued in this manner all the way up to the ground or surface line of the trench. Concrete collars or other concrete poured around the fitting to stabilize unwanted movement is recommended to prevent water from undercutting the underside of the pipe and fittings. Summary: Due to various ground conditions and different situations, installation techniques vary widely. We warranty our products to be free of manufacturerâ€™s defects. We will not replace the products that are installed or used incorrectly. The design of the systems that our product is used in is a factor that cannot be overlooked. Intro: GPK manufactures PVC sewer fittings in accordance with either ASTM D 3034, F 1336 or F 679 to be used in gravity flow or low pressure applications. Injection molded fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. Material: Fabricated fittings are manufactured from PVC pipe and molded components meeting the requirements of either ASTM D 3034, F 1336 or F 679 for workmanship, extrusion quality, stiffness, impact resistance, dimensions and structural performance. Extruded pipe components are made from PVC material with a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D1784. Injection molded fittings are made from PVC material with a minimum cell classification of 12454 or 13343 as defined in ASTM D 1784. Extrusion Quality: Extruded components are tested in accordance with and meet the requirements of ASTM D 2152 for properly fused PVC. Impact Resistance: Extruded Components are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ â€“ 5â€ 150 Ft-Lbs 6â€ â€“ 8â€ 210 Ft-Lbs 10â€ â€“ 36â€ 220 Ft-Lbs (100mm â€“ 125mm 203 J) (150mm â€“ 200mm 284 J) (250mm â€“ 973mm 299 J) Impact Resistance: Injection molded fittings are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ 50 Ft-Lbs 6â€ â€“ 8â€ 75 Ft-Lbs 10â€ â€“ 12â€ 90 Ft-Lbs (100mm 68 J) (150mm â€“ 200mm 102 J) (250mm â€“ 300mm 122 J) Pipe Stiffness: Extruded Components are tested in accordance with ASTM D 2412. The stiffness equals or exceeds the requirements of ASTM D 3034 and F 679. 2 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS Pipe Flattening: Extruded components are flattened as described in ASTM D 3034 and F 679 until the distance between the plates is 40% of the outside diameter of the pipe. There shall be no splitting, cracking or breaking. Pressure/Pressure Deflection: Gasketed joints are tested in accordance with ASTM D 3212. Pressure: 10 minutes @ 10.8 psi (74.5 kPa) + 10 minutes deflected @ 10.8 psi (74.5 kPa). Vacuum: 10 minutes @ 22 in. Hg (74 kPa) + 10 minutes deflected @ 22 in. Hg (74kPa). Branch Bending: The chemically fused areas around the fabricated branches of tee, wye and tee-wye fittings are tested to ASTM F 1336 to verify their strength and integrity. Pipe Stop Support: Tee and tee-wye fittings are tested to requirements of ASTM F 1336 for pipe stop load support. No cracking or splitting shall occur and pipe spigot shall not protrude into waterway of the fitting. Joining Methods: Chemically Fused Solvent Weld Joints Solvent cement is handled and tested in accordance with ASTM D 2564 and D 2855. The Lap Shear Strength shall equal or exceed 900 psi (6205 kPa) @ 72 hours. Heat Fusion Welded Joints (Butt Fusion Welds) Elastomeric Seals (Gaskets) Must meet all requirements of ASTM F 477 and D 3212. Saddles: Injection Molded saddle tees and saddle wyes shall have skirts with a minimum of 80 square inches (516 square cm) surface area which can be bonded to pipe. Fabricated saddle tees and saddle wyes shall have skirts with a minimum of 160 square inches (1032 square cm) surface area which can be bonded to pipe. The worm drive saddle straps used to fasten the saddles are manufactured with corrosion resistant 300 series AISI stainless steel. GPK does not recommend gasket skirts where air tests are required. Epoxy Reinforced Welds. Threads: Threads shall be American National Standard Taper Pipe Threads (ANSI B1.20.1) which shall be gauged in accordance with ASTM Method D-2122. 3 | P a g e 811 ***WATER*** BI: 60, 61, 62 MCWANE DUCTILE IRON PIPE Boltless restrained joint systems â€¢ Multiple design options available from 3â€â€“36â€ â€¢ Fast and easy installation â€¢ 350 psi pressure rating â€¢ Independently tested mcwaneductile.com SURE STOPÂ® GASKET FOR TYTONÂ® JOINT JOINT DEFLECTION CHART Size In. Rating psi Deflection Degrees 3 350 5 4 350 5 6 350 5 8 350 5 10 350 5 PUSH-ON JOINT PIPE 12 350 5 Maximum Allowable Joint Deflection 14 350 4 Pipe Y-Maximum X Deflection Approximate Radius in ft. of 16 350 4 Size Joint Deflection in Inches Curve Produced by Succession 18 350 4 In. in Degrees 18 ft. Length of Joints 18 ft. Length 20 350 2.5 3 5Â° 19 205 24 350 2.5 4 5Â° 19 205 SURE STOP 350Â® GASKETS are SURE STOP 350Â® GASKETS 6 5Â° 19 205 available in sizes 3 in. â€“ 24 in., and are NSF 61 approved, UL listed, 8 5Â° 19 205 with a rating of 350 psi they will and FM approved. 10 5Â° 19 205 meet or exceed the capabilities of 12 5Â° 19 205 ductile iron pipe, valves, and fittings. FM Rating: 4 in. â€“ 6 in. = 250 psi 18 in. â€“24 in. = 200 psi 14 5Â° 19 205 16 5Â° 19 205 APPLICATION NOTES 18 5Â° 19 205 1. For ductile iron applications utilizing TYTONÂ® pipe, vales, and fittings made to 20 5Â° 19 205 AWWA specifications. 24 5Â° 19 205 2. In cold weather assembly maintain the temperature of the gasket above 40Â° F. 30 5Â° 19 205 3. The socket of the joint should be clean and free of debris or significant corrosion. 36 4Â° 15 260 4. Gasket should be properly seated in the bell socket. 5. Keep the pipe and joint in alignment during assembly. If installed out of alignment, MAXIMUM DEFLECTION FOR FULL LENGTH PIPE the gasket can be pushed out of position, creating the potential for leaks or failure. 6. If deflection is wanted in the joint, deflect before fully inserting the joint. 7. Some extension of the joint will occur when pressurized. To avoid this, the joint should be pulled out after assembly to â€œsetâ€ the stainless steel teeth in the inserted pipe. 8. Once assembled, the joint can be disassembled using steel shims. MECHANICAL JOINT PIPE Maximum Allowable Joint Deflection 9. When cut pipe is used, the following steps are required: Approximate Radius in a. Ensure that the spigot end is properly beveled Pipe Y-Maximum X Deflection ft. of Curve Produced by b. Mark the joint depth on the spigot so it is clear when the joint is fully inserted. Size Joint Deflection in Inches Succession of Joints In. in Degrees 18 ft. Length c. Ensure that the pipe meets the required dimensional tolerances. 18 ft. Length 10. Do not reuse SURE STOP 350Â® GASKETS, as they may have been damaged during 6 7Â°â€“7â€™ 27 145 any previous installation or during removal. 8 5Â°â€“21â€™ 20 195 11. Do not use SURE STOP 350Â® GASKETS to conduct electricity through the pipe 10 5Â°â€“21â€™ 20 195 joint, as they could be damaged and fail. 12 5Â°â€“21â€™ 20 195 Â® 14 3Â°â€“35â€™ 13.5 285 12. Do not use SURE STOP 350 GASKETS in above ground applications. 16 3Â°â€“35â€™ 13.5 285 13. Do not use SURE STOP 350Â® GASKETS with thick coating on the pipe exterior. 18 3Â°â€“0â€™ 11 340 14. If SURE STOP 350Â® GASKETS are used in straight casings, you must pull the pipe 20 3Â°â€“0â€™ 11 340 through the casing. Do not push the pipe. 24 2Â°â€“23â€™ 9 450 TABLE 1: SUITABLE PIPE DIAMETERS FOR FIELD CUTS AND RESTRAINED JOINT FIELD CUT PIPE FIELD FABRICATION When pipe is cut in the field, the cut end may be readily conditioned so that it can be used to Pipe Size Min. Pipe Max. Pipe Min. Pipe Max. Pipe In. Diameter In. Diameter In. Circumference In. Circumference In. make up the next joint. The outside of the cut end should be beveled about 1/4 â€“inch at an 3 3.9 4.02 12-1/4 12-5/8 angle of about 30 degrees (Figure 1). This can be 4 4.74 4.86 14-29/32 15-9/32 quite easily done with a coarse file or a portable 6 6.84 6.96 21-1/2 21-7/8 8 8.99 9.11 28-1/4 28-5/8 grinder. The operation removes any sharp, rough Figure 1 10 11.04 11.16 34-11/16 35-1/16 edges which otherwise might damage the gasket. 12 13.14 13.26 41-9/32 41-21/32 14 15.22 15.35 47-13/16 48-7/32 When ductile iron pipe 14 in. and larger is to be cut in the field, the material should 16 17.32 17.45 54-13/32 54-13/16 be ordered as â€œGAUGED FULL LENGTHâ€. Pipe that is â€œgauged full lengthâ€ is specially 18 19.42 19.55 61 61-13/32 marked to avoid confusion. The ANSI/AWWA standard for ductile iron pipe requires 20 21.52 21.65 67-19/32 68 factory gauging of the spigot end. Accordingly, pipe selected for field cutting should 24 25.72 25.85 80-13/16 81-7/32 also be field gauged in the location of the cut and found to be within the tolerances 30 31.94 32.08 100-11/32 100-25/32 shown in Table 1. In the field, a mechanical joint gland can be used as a gauging device. 36 38.24 38.38 120-1/8 120-9/16 Above Table Based on ANSI/AWWA C151/A21.51 Guidelines for Push-On Joints. THE BACKHOE METHOD OF ASSEMBLY A backhoe may be used to assemble pipe of intermediate and larger sizes. The plain end of the pipe should be carefully guided by hand into the bell of the mcwaneductile.com previously assembled pipe. The bucket of the backhoe may then be used to push the pipe until fully seated. A timber header should be used between the pipe and backhoe bucket to avoid damage to the pipe. TYTONÂ® JOINT PIPE MECHANICAL JOINT PIPE TytonÂ® Joint Pipe Outside Pipe Size *Dimensions In. Thickness In. Diameter In. From To In. A B Pipe Gland** Outside 3 .25 .40 3.96 5.80 3.00 Pipe Thickness *Dimensions In. Bolts Bell Bolts Diameter 4 .25 .41 4.80 7.10 3.15 Size In. Weight Gasket 6 .25 .43 6.90 8.63 3.38 In. Lb. Weight Size Length 8 .25 .45 9.05 10.94 3.69 From To In. B J K1 K2 No. Lb. In. In. 10 .26 .47 11.10 13.32 3.75 3 .25 .40 3.96 2.50 6.19 7.62 7.69 4 5/8 3 11 7 12 .28 .49 13.20 15.06 3.75 14 .28 .51 15.30 17.80 5.00 4 .26 .41 4.80 2.50 7.50 9.06 9.12 4 3/4 3-1/2 16 10 16 .30 .52 17.40 19.98 5.00 6 .25 .43 6.90 2.50 9.50 11.06 11.12 6 3/4 3-1/2 18 16 18 .31 .53 19.50 22.00 5.00 8 .27 .45 9.05 2.50 11.75 13.31 13.37 6 3/4 4 24 25 20 .33 .54 21.60 24.12 5.25 10 .29 .47 11.10 2.50 14.00 15.62 15.62 8 3/4 4 31 30 24 .33 .56 25.80 28.43 5.50 30 .34 .63 32.00 35.40 6.55 12 .31 .49 13.20 2.50 16.25 17.88 17.88 8 3/4 4 37 40 36 .38 .73 38.30 41.84 7.00 14 .33 .51 15.30 3.50 18.75 20.25 20.25 10 3/4 4-1/2 61 45 *Nominal laying length is 18 ft. 16 .34 .52 17.40 3.50 21.00 22.50 22.50 12 3/4 4-1/2 74 55 18 .35 .53 19.50 3.50 23.25 24.75 24.75 12 3/4 4-1/2 85 65 20 .36 .54 21.60 3.50 25.50 27.00 27.00 14 3/4 4-1/2 98 85 24 .38 .56 25.80 3.50 30.00 31.50 31.50 16 3/4 5 123 105 * Nominal laying length is 18 ft. ** Weight shown for regular grey cast iron follower gland, corton bolts and rubber gasket. STANDARD DIMENSIONS AND WEIGHTS OF BALL AND SOCKET JOINT PIPE 3â€ THROUGH 36â€ PUSH-ON JOINT DUCTILE IRON PIPE Pipe Pressure Nominal Wt. of TytonÂ® Joint Size Class Thickness OD* Barrel Wt. Per Avg. Wt. In. Per Ft. Wt. of Lgth.â€ Per Ft.â€¡ In. psi In. Bell Lb. â€ Lb. Lb. Lb. 15Â° Max. T 3 350 0.25 3.96 8.90 7.00 185 9.20 4 350 0.25 4.80 10.90 9.00 225 11.30 A 6 350 0.25 6.90 16.00 11.00 300 16.60 B 8 350 0.25 9.05 21.10 17.00 395 22.00 10 350 0.26 11.10 27.10 24.00 510 28.40 Thickness A B Full Length Weight - Lb.** Safe 12 350 0.28 13.20 34.80 29.00 655 36.40 Pipe End 250 0.28 15.30 40.40 45.00 770 42.90 Size Under Water Class Pipe Retainer As Pull 14 300 0.30 15.30 43.30 45.00 825 45.80 In. T (A21.51) O.D. O.D. Shipped Full of Full of Lb. 350 0.31 15.30 44.70 45.00 850 47.20 Air Water 250 0.30 17.40 49.30 54.00 940 52.30 6 55 .40 6.90 13.88 545 240 465 50,000 16 300 0.32 17.40 52.50 54.00 1000 55.50 8 55 .42 9.05 16.63 770 240 655 70,000 350 0.34 17.40 55.80 54.00 1060 58.80 10 55 .44 11.10 19.13 1005 220 860 95,000 250 0.31 19.50 57.20 59.00 1090 60.50 12 55 .46 13.20 22.00 1270 155 1080 120,000 18 300 0.34 19.50 62.60 59.00 1185 65.90 14 56 .51 15.30 24.50 1655 160 1410 145,000 350 0.36 19.50 66.20 59.00 1250 69.50 16 56 .52 17.40 27.00 1990 45 1685 165,000 250 0.33 21.60 67.50 74.00 1290 71.60 56 .53 2375 -70 2015 20 300 0.36 21.60 73.50 74.00 1395 77.60 18 19.50 30.00 195,000 58* .59 2560 110 2170 350 0.38 21.60 77.50 74.00 1470 81.60 56 .54 2810 -200 2375 200 0.33 25.80 80.80 95.00 1550 86.10 20 21.60 32.75 210,000 59* .63 3110 100 2635 250 0.37 25.80 90.50 95.00 1725 95.80 24 56 .56 3700 -620 3110 300 0.40 25.80 97.70 95.00 1855 103.00 24 25.80 38.25 260,000 62* .74 4415 95 3715 350 0.43 25.80 104.90 95.00 1985 110.20 58 .71 5855 -900 4920 150 0.34 32.00 103.50 139.00 2000 111.20 30 32.00 46.25 335,000 61* .83 6435 -180 5360 200 0.38 32.00 115.50 139.00 2220 123.20 57 .78 8145 -1300 6880 30** 250 0.42 32.00 127.50 139.00 2435 135.20 36 38.30 54.25 400,000 59* .88 8725 -725 7330 300 0.45 32.00 136.50 139.00 2595 144.20 350 0.49 32.00 148.40 139.00 2810 156.10 * Thickness required to overcome buoyancy. 150 0.38 38.30 138.50 184.00 2675 148.70 ** Weights listed are for 18â€™â€“ 0â€ laying lengths. Nominal full lengths vary by size. 200 0.42 38.30 152.90 184.00 2935 163.10 Pipe, Bell, Ball and Retainer are ductile iron. 36** 250 0.47 38.30 170.90 184.00 3260 181.10 Dimensions and weights are subject to manufacturing tolerances. 6 in. â€“ 24 in. pressure rating: 350 psi 300 0.51 38.30 185.30 184.00 3520 195.50 30 in. â€“ 36 in. pressure rating: 250 psi 350 0.56 38.30 203.20 184.00 3840 213.40 â€ Including bell; calculated weight of pipe rounded off to the nearest 5 lb. â€¡ Including bell; average weight per foot, based on calculated weight of pipe before rounding. * Tolerances of OD of spigot end: 3 â€“12 in. = +0.06 in. & -0.06 in. ; 14â€“24 in. = +0.05 in. & -0.08 in. ; 30 â€“ 36 in. = +0.08 in. & -0.06 in. ** FastiteÂ® Joint TR FLEXÂ® RESTRAINED JOINT PIPE THRUST-LOCKâ„¢ BOLTLESS RESTRAINED JOINT PIPE C B A C B A 4â€â€“24â€ Thrust-Lockâ„¢ Boltless Restrained Joint *Pressure Deflection A B C Pipe Size In. Rating Inches Spigot psi Degrees Pipe O.D. Bell O.D. in 18ft Socket C 6 350 4 15 6.90 10.187 5.01 BA 30â€â€“36â€ 8 350 4 15 9.05 13.187 5.57 10 350 4 15 11.10 15.187 5.88 C 12 350 4 15 13.20 17.250 6.13 BA A B C # of 14 350 4 15 15.30 20.625 7.63 *Pressure # of D.I. Max Pipe Rating Locking Rubber Deflection Pullout 16 350 4 15 17.40 22.375 7.88 Size In. PIPE Segments psi In. In. In. Segments Degrees 18 350 4 15 19.50 25.125 8.13 Retainers 20 350 4 15 21.60 27.250 8.38 4 350 4.80 7.25 4.84 2 1 5 0.03 24 350 4 15 25.80 31.562 8.63 6 350 6.90 9.52 5.27 2 1 5 0.04 30 250 2 7 32.00 39.06 10.53 8 350 9.05 11.93 5.82 2 1 5 0.04 *The THRUST-LOCKâ„¢ Restrained Joint has a working pressure rating equivalent to the working 10 350 11.10 14.37 6.03 2 1 5 0.05 pressure rating of the parent pipe with a maximum working pressure rating of 350 psi for 6 in. 12 350 13.20 16.68 6.30 4 2 5 0.06 through 24 in. and 250 psi for 30 in. 14 350 15.30 19.16 7.75 4 2 3-1/4 0.05 NOTE: These deflections are based on joints with nominal dimensions. 16 350 17.40 21.46 7.95 4 2 3-1/4 0.05 18 350 19.50 23.76 8.19 4 2 3 0.05 RATED WORKING PRESSURE AND MAXIMUM DEPTH OF COVER 20 350 21.60 26.04 8.40 4 2 2-1/2 0.05 Laying Conditions 24 350 25.80 30.61 8.86 8 4 2-1/4 0.05 Pipe *Pressure Nominal 30 250 32.00 36.88 10.28 8 4 1-3/4 0.05 Size Rating Thickness Type 1 Type 2 Type 3 Type 4 Type 5 36 250 38.30 43.85 10.87 8 4 1-1/2 0.05 In. psi In. Trench Trench Trench Trench Trench *The TR FLEXÂ® Restrained Joint has a working pressure rating equivalent to the working Maximum depth of cover â€¡â€“ft pressure rating of the parent pipe with a maximum working pressure rating of 350 psi for 4 in. 3 350 0.25 78 88 99 100Â§ 100Â§ through 24 in. and 250 psi for 30 in. through 36 in. 4 350 0.25 53 61 69 85 100Â§ NOTE: These deflections are based on joints with nominal dimensions. 6 350 0.25 26 31 37 47 65 8 350 0.25 16 20 25 34 50 SUPER-LOCKÂ® RESTRAINED JOINT PIPE 10 350 0.26 11** 15 19 28 45 12 350 0.28 10** 15 19 28 44 250 0.28 â€ â€ 11** 15 23 36 TYTONÂ® JOINT PIPE 14 300 0.30 â€ â€ 13 17 26 42 Sizes 6â€â€“24â€ 350 0.31 â€ â€ 14 19 27 44 FASTITEÂ® JOINT PIPE 250 0.30 â€ â€ 11** 15 24 34 30â€ Size 16 300 0.32 â€ â€ 13 17 26 39 350 0.34 â€ â€ 15 20 28 44 250 0.31 â€ â€ 10** 14 22 31 18 300 0.34 â€ â€ 13 17 26 36 350 0.36 â€ â€ 15 19 28 41 B 250 0.33 â€ â€ 10 14 22 30 A 6â€â€“30â€ 20 300 0.36 â€ â€ 13 17 26 35 350 0.38 â€ â€ 15 19 28 38 200 0.33 â€ â€ 8** 12 17 25 Deflection A B 250 0.37 â€ â€ 11 15 20 29 *Pressure 24 Pipe Rating 300 0.40 â€ â€ 13 17 24 32 Size In. Inches Pipe Retainer psi Degrees 350 0.43 â€ â€ 15 19 28 37 in 18ft O.D. O.D. 150 0.34 â€ â€ -- 9 14 22 6 350 4 15 6.90 11.75 200 0.38 â€ â€ 8** 12 16 24 8 350 4 15 9.05 14.38 30 250 0.42 â€ â€ 11 15 19 27 10 350 4 15 11.10 16.75 300 0.45 â€ â€ 12 16 21 29 12 350 4 15 13.20 19.13 350 0.49 â€ â€ 15 19 25 33 14 350 3 11 15.30 21.75 150 0.38 â€ â€ -- 9 14 21 16 350 3 11 17.40 24.00 200 0.42 â€ â€ 8** 12 15 23 18 350 3 11 19.50 26.38 36 250 0.47 â€ â€ 10 14 18 25 20 350 3 11 21.60 28.63 300 0.51 â€ â€ 12 16 20 28 24 350 3 11 25.80 33.75 350 0.56 â€ â€ 15 19 24 32 30 250 3 11 32.00 40.13 â€¡ An allowance for a single H-20 truck with 1.5 impact factor is included for all depths of cover. * In the 14 in. and larger sizes, pressure rating is limited to the rating of the pipe barrel Â§ Calculated maximum depth of cover exceeds 100 ft. (30.5 m). ** Minimum allowable depth of cover is 3 ft. (0.9 m). thickness selected. â€ â€ For pipe 14 in. (350 mm) and larger, consideration should be given to the use of laying Dimensions subject to manufacturing tolerances. conditions other than Type 1. TYTONÂ® AND FASTITEÂ® PUSH-ON JOINTS TR FLEXÂ® RESTRAINED JOINT ASSEMBLY INSTRUCTIONS ASSEMBLY INSTRUCTIONS Step 1. Thoroughly clean out the bell with special attention to the gasket Step 1. (4â€â€“ 10â€) Lay pipe such that one of the bell slots is accessible. recess. Remove any foreign material or excess paint. Clean the spigot (12â€â€“ 20â€) Lay pipe such that both of the bell slots are accessible, in the horizontal or beveled plain end and remove any sharp edges with a standard file. position if possible. (24â€â€“ 36â€) Lay pipe such that all four of the bell slots are accessible, in the diagonal Step 2. After making sure that the correct gasket is being used, insert it into position if possible. the recess in the bell with the small end of the gasket facing the bell face. Step 2. Clean the bell socket and insert gasket. Step 3. Apply lubricant to the inside surface of the gasket, making sure that Step 3. Clean the spigot end to the assembly stripes. the entire surface is coated. Apply a generous coating of lubricant to the beveled portion of the plain end. Step 4. Lubricate the exposed surface of the gasket and pipe spigot end back to the weld bead. Step 4. Guide the plain end into the bell and, while maintaining straight Step 5. Make a normal push-on joint assembly, completely homing the pipe until the first alignment, push the plain end into the bell socket. Once the joint assembly strip is in the bell socket. Keeping the joint in straight alignment during the is assembled, necessary deflection can be accomplished. When assembly process. assembly is complete, the bell face should be aligned between the Step 6. (4â€â€“ 10â€) Insert the right-hand locking segment into a bell slot and slide the segment two white depth rings, for TytonÂ® Joints. FastiteÂ® Joints have only 1 clockwise around the pipe. assembly stripe. (12â€â€“ 36â€) Insert lower locking segment into a bell slot and slide the segment around the MECHANICAL JOINT pipe. ASSEMBLY INSTRUCTIONS Step 7. (4â€â€“ 10â€) Insert left-hand locking segment into the bell slot and slide the segment counter- Step 1. Clean the bell socket and spigot or plain end. Lubricate both the clockwise around the pipe. gasket and plain end by brushing an approved pipe lubricant. (12â€â€“ 36â€) Insert upper locking segment into the same bell slot and rotate around the pipe. Step 2. Place the gland on the plain end with the lip extension toward the Step 8. (4â€â€“ 10â€) Hold the segments apart and wedge the rubber retainer into the slot between plain end. Place the gasket on the plain end with the narrow edge the two locking segments. facing the plain end. (12â€â€“ 36â€) Hold the upper segment in place and wedge the rubber retainer into the slot Step 3. Insert the plain end into the bell and press the gasket into the bell between the two locking segments. recess. Push the gland toward the socket and center it around the Step 9. (4â€â€“ 10â€) None. pipe with the gland lip against the gasket. (12â€â€“ 20â€) Repeat steps 6â€“8 for other slot. Make sure that all 4 locking segments and 2 Step 4. Insert and tighten the bolts. It is important to maintain the same rubber retainers are securely in place. distance between the gland and the bell face at all times. This is best (24â€â€“ 36â€) Repeat steps 6â€“8 for other slot. Make sure that all 8 locking segments and 4 done by alternating side to side and top to bottom, while tightening the rubber retainers are securely in place. bolts. Step 10. Extend the joint to remove the slack in the locking segment cavity. Joint extension is Note: Achieving the recommended bolt torque, particularly with large necessary to attain the marked laying length on the pipe and to minimize growth or diameter pipe, may require repeating the process up to 5 times or extension of the line as it is pressurized. more. Recommended bolt torque ranges are as follows: Step 11. Set the joint deflection as required. Pipe Bolt Nut Across Wrench Torque Range THRUST-LOCKâ„¢ RESTRAINED JOINT Size In. Diameter In. Flats In. Length In. Foot Lbs. ASSEMBLY INSTRUCTIONS 3 5/8 1-1/16 8 45 to 60 Step 1. Ring Installation. Put lock ring on the spigot end of the pipe. Pry the lock ring over the 4â€“24 3/4 1-1/14 10 75 to 90 weldment. Use the hammer to tap the cover. Lock ring installation is complete. Step 2. Clean the Bell and Spigot. Thoroughly clean out the bell with special attention to the NOMINAL THICKNESS FOR STANDARD gasket recess. Remove any foreign material or excess paint. Clean the spigot end and PRESSURE CLASSES OF DUCTILE IRON PIPE remove any sharp edges. Pressure Class* Step 3. Insert the gasket into the recess in the bell with the small end of the gasket facing the bell Outside face. Size Diameter 150 200 250 300 350 In. In. Normal Thickness â€” in. Step 4. Lubricate the Bell and Spigot. Apply lubricant to the inside surface of the gasket. Apply a generous coating of lubricant to the spigot end. 3 3.96 â€” â€” â€” â€” 0.25** 4 4.80 â€” â€” â€” â€” 0.25** Step 5. Insert Pipe. Guide the spigot end into the bell and, while maintaining straight alignment, 6 6.90 â€” â€” â€” â€” 0.25** push the pipe into the bell socket. 8 9.05 â€” â€” â€” â€” 0.25** Step 6. Insert Lock Ring. Push lock ring into the bell. 10 11.10 â€” â€” â€” â€” 0.26 12 13.20 â€” â€” â€” â€” 0.28 Step 7. Rotate the lock ring until the lugs align. Use a hammer to tap the ring if required. Install the 14 15.30 â€” â€” 0.28 0.30 0.31 anti-rotation wedges at 3 and 9 oâ€™clock if the pipe is being used inside of a casing. Deflect 16 17.40 â€” â€” 0.30 0.32 0.34 the joint if desired. 18 19.5 â€” â€” 0.31 0.34 0.36 20 21.60 â€” â€” 0.33 0.36 0.38 SUPER-LOCKÂ® 24 25.80 â€” 0.33 0.37 0.40 0.43 ASSEMBLY INSTRUCTIONS 30 32.00 0.34 0.38 0.42 0.45 0.49 Step 1. Remove hook bolts securing retainer to plain end. Clean plain end of pipe. Clean out any 36 38.30 0.38 0.42 0.47 0.51 0.56 dirt behind retainer lugs. Lubricant should be applied to the beveled nose. * Pressure Classes are defined as NOTE: Per ANSI/AWWA C150/A21.50 Step 2. Assemble the joint in accordance with Clow Assembly Instructions (See Table A on page the rated water pressure of the the thicknesses above include the 13). Make certain that the bell is clean prior to gasket insertion. Be sure that the correct pipe in psi. The thicknesses shown 0.08 in. service allowance and the gasket is used. are adequate for the rated water casting tolerance listed below by size working pressure plus a surge ranges: Step 3. Guide plain end into Super-LockÂ® bell and provide reasonably straight alignment. â€œMakeâ€ allowance of 100 psi. Calculations joint by pushing the plain end into the bell. A jack or come-a-long may also be used to pull are based on a minimum yield the plain end into the bell. Position retainer so that the recesses line up with the lugs on strength of 42,000 and a 2.0 CASTING the bell. Slide retainer over bell and rotate until the lugs on the bell and the retainer line safety factor times the sum of the SIZE TOLERANCES up. working pressure and 100 psi surge (Inches) (Inches) allowance. 3â€“8 -0.05 Step 4. At drilled hole on retainer O.D., insert retainer lock in recess formed by lugs on bell and **Calculated thicknesses for these 10â€“12 -0.06 retainer. Insert roll pin in drilled hole and drive flush with retainer O.D. sizes and pressure ratings are 14â€“36 -0.07 Step 5. Take any necessary deflection after joint is completely assembled. less than those shown above. Presently, these are the lowest Caution: do not over deflect the joint beyond the maximum deflection column specified nominal thicknesses available in on page 2 or subject the joint to bending stress to obtain additional deflection. these sizes. DIMENSIONS AND WEIGHTS FOR SPECIAL CLASSES OF PUSH-ON DUCTILE IRON PIPE LAYING CONDITIONS Pipe Nominal Wt. of TytonÂ® Joint Thickness OD* Size Class Thickness In. Barrel Wt. of Wt. Per Avg. Wt. In. In. Per Ft. â€ Lb. Bell Lb. Lgth.â€ Lb. Per Ft.â€¡ Lb. 3 52 0.28 3.96 9.9 7 185 10.3 3 54 0.34 3.96 11.8 7 220 12.2 3 56 0.40 3.96 13.7 7 255 14.1 4 51 0.26 4.80 11.3 9 210 11.8 4 52 0.29 4.80 12.6 9 235 13.1 4 53 0.32 4.80 13.8 9 255 14.3 4 54 0.35 4.80 15 9 280 15.5 Type 1* Type 2 Type 3 4 56 0.41 4.80 17.3 9 320 17.8 Flat-bottom trench.â€ Loose backfill. Flat-bottom trench.â€ Backfill lightly Pipe bedded in 4 in. (100 mm) consolidated to centerline of pipe. minimum of loose soil.++ Backfill 6 50 0.25 6.90 16 11 300 16.6 lightly consolidated to top of pipe. 6 51 0.28 6.90 17.8 11 330 18.4 6 52 0.31 6.90 19.6 11 365 20.2 6 53 0.34 6.90 21.4 11 395 22.0 * For 14 in. (355-mm) and 6 54 0.37 6.90 23.2 11 430 23.8 larger pipe, consideration 6 55 0.40 6.90 25 11 460 25.6 should be given to the use 6 56 0.43 6.90 26.7 11 490 27.3 of laying conditions other 8 50 0.27 9.05 22.8 17 425 23.7 than Type 1. 8 51 0.30 9.05 25.2 17 470 26.1 8 52 0.33 9.05 27.7 17 515 28.6 â€ â€Flat-bottomâ€ is defined as 8 53 0.36 9.05 30.1 17 560 31.0 undisturbed earth. 8 54 0.39 9.05 32.5 17 600 33.4 Type 4 Type 5 Pipe bedded in sand, gravel, or Pipe bedded in compacted ++ â€Loose soilâ€ or â€œselect 8 55 0.42 9.05 34.8 17 645 35.7 crushed stone to depth of 1/8 pipe granular material to centerline materialâ€ is defined as 8 56 0.45 9.05 37.2 17 685 38.1 diameter, 4 in. (100 mm) minimum. of pipe. Compacted granular native soil excavated from 10 50 0.29 11.10 30.1 24 565 31.4 Backfill compacted to top of or select material++ to top of the trench, free of rocks, 10 51 0.32 11.10 33.2 24 620 34.5 pipe. (Approximately 80 percent pipe. (Approximately 90 percent foreign materials, and 10 52 0.35 11.10 36.2 24 675 37.5 Standard Proctor, AASHTO T-99.) Standard Proctor, AASHTO T-99.) frozen earth. 10 53 0.38 11.10 39.2 24 730 40.5 10 54 0.41 11.10 42.1 24 780 43.4 Notes: 10 55 0.44 11.10 45.1 24 835 46.4 Consideration of the pipe-zone embedment 10 56 0.47 11.10 48 24 890 49.3 conditions included in this figure may be 12 50 0.31 13.20 38.4 29 720 40.0 American Association of State Highway and influenced by factors other than pipe strength. 12 51 0.34 13.20 42 29 785 43.6 For additional information on pipe bedding and Transportation Officials, 444 N. Capitol St. N.W., 12 52 0.37 13.20 45.6 29 850 47.2 backfill, see ANSI/AWWA C600. Suite 225, Washington, DC 20001. 12 53 0.40 13.20 49.2 29 915 50.8 12 54 0.43 13.20 52.8 29 980 54.4 12 55 0.46 13.20 56.3 29 1040 57.9 STANDARDS APPLICABLE TO DUCTILE IRON PIPE AND FITTINGS 12 56 0.49 13.20 59.9 29 1105 61.5 14 50 0.33 15.30 47.5 45 900 50.0 THICKNESS DESIGN OF DUCTILE IRON PIPE ANSI/AWWA C150/A21.50 14 51 0.36 15.30 51.7 45 975 54.2 DUCTILE IRON PIPE FOR WATER AND OTHER LIQUIDS ANSI/AWWA C151/A21.51 14 52 0.39 15.30 55.9 45 1050 58.4 FEDERAL WWP421D, Grade C 14 53 0.42 15.30 60.1 45 1125 62.6 DUCTILE IRON PIPE FOR GRAVITY FLOW SERVICE ANSI/ASTM A746 14 54 0.45 15.30 64.2 45 1200 66.7 DUCTILE IRON FITTINGS FOR WATER AND OTHER LIQUIDS 14 55 0.48 15.30 68.4 45 1275 70.9 3 in. through 36 in. ANSI/AWWA C110/A21.10 14 56 0.51 15.30 72.5 45 1350 75.0 16 50 0.34 17.40 55.8 54 1060 58.8 DUCTILE IRON COMPACT FITTINGS 16 51 0.37 17.40 60.6 54 1145 63.6 3 in. through 24 in. ANSI/AWWA C153/A21.53 16 52 0.40 17.40 65.4 54 1230 68.4 FLANGED FITTINGS ANSI/AWWA C110/A21.10 16 53 0.43 17.40 70.1 54 1315 73.1 ANSI B16.1 16 54 0.46 17.40 74.9 54 1400 77.9 DUCTILE IRON PIPE WITH THREADED FLANGES ANSI/AWWA C115/21.15 16 55 0.49 17.40 79.7 54 1490 82.7 16 56 0.52 17.40 84.4 54 1575 87.4 COATINGS AND LININGS 18 50 0.35 19.50 64.4 59 1220 67.7 Asphaltic ANSI/AWWA C151/A21.51 18 51 0.38 19.50 69.8 59 1315 73.1 ANSI/AWWA C110/A21.10 18 52 0.41 19.50 75.2 59 1415 78.5 ANSI/AWWA C153/A21.53 18 53 0.44 19.50 80.6 59 1510 83.9 Cement Lining ANSI/AWWA C104/A21.4 18 54 0.47 19.50 86 59 1605 89.3 18 55 0.50 19.50 91.3 59 1700 94.6 Various Epoxy Linings and Coatings MANUFACTURERâ€™S STANDARD 18 56 0.53 19.50 96.7 59 1800 100.0 Exterior Polyethylene Encasement ANSI/AWWA C105/A21.5 20 50 0.36 21.60 73.5 74 1395 77.6 JOINTS â€“ PIPE AND FITTINGS 20 51 0.39 21.60 79.5 74 1505 83.6 Push-On and Mechanical Rubber-Gasket Joints ANSI/AWWA C111/A21.11 20 52 0.42 21.60 85.5 74 1615 89.6 FEDERAL WWP421D 20 53 0.45 21.60 91.5 74 1720 95.6 Flanged ANSI/AWWA C115/A21.15 20 54 0.48 21.60 97.5 74 1830 101.6 ANSI B16.1 20 55 0.51 21.60 103.4 74 1935 107.5 20 56 0.54 21.60 109.3 74 2040 113.4 Grooved and Shouldered ANSI/AWWA C606 24 50 0.38 25.80 92.9 95 1765 98.2 PIPE THREADS ANSI B2.1 24 51 0.41 25.80 100.1 95 1895 105.4 INSTALLATION ANSI/AWWA C600 24 52 0.44 25.80 107.3 95 2025 112.6 24 53 0.47 25.80 114.4 95 2155 119.7 24 54 0.50 25.80 121.6 95 2385 126.9 24 55 0.53 25.80 128.8 95 2415 134.1 24 56 0.56 25.80 135.9 95 2540 141.2 30 50 0.39 32.00 118.5 139 2270 126.2 30 51 0.43 32.00 130.5 139 2490 138.2 30 52 0.47 32.00 142.5 139 2705 150.2 30 53 0.51 32.00 154.4 139 2920 162.1 30 54 0.55 32.00 166.3 139 3130 174.0 NEW JERSEY OHIO UTAH CANADA 30 55 0.59 32.00 178.2 139 3345 185.9 183 Sitgreaves St. 2266 S. 6th St. 1401 E 2000 S. 1757 Burlington St. E 30 56 0.63 32.00 190.0 139 3560 197.7 Phillipsburg, NJ 08865 Coshocton, OH 43812 Provo, UT 84603 Hamilton, ON L8N-3R5 36 50 0.43 38.30 156.5 184 3000 166.7 908-454-1161 740-622-6651 801-373-6910 905-547-3251 36 51 0.48 38.30 174.5 184 3325 184.7 mcwaneductile.com mcwaneductile.com mcwaneductile.com canadapipe.com 36 52 0.53 38.30 192.4 184 3645 202.6 36 53 0.58 38.30 210.3 184 3970 220.5 36 54 0.63 38.30 228.1 184 4290 238.3 36 55 0.68 38.30 245.9 184 4610 256.1 NSF 61 ISO 9001 DIPRA 36 56 0.73 38.30 263.7 184 4930 273.9 â€ Including bell; calculated weight of pipe rounded off to the nearest 5 lb. â€¡Including bell; average weight per foot, based on calculated weight of pipe before rounding. *Tolerances of OD of spigot end; 3â€“12 in. Â±0.06 in., 14â€“24 in. +0.05 in., -0.08 in., 30â€“36 in. +0.08 in., -0.06 in. Utility Pipe Fittings and Accessories Compact MJ Fittings ANSI/AWWA C153/A21.53 WATER MAIN A A A T A T A T A A A A A A T T A T A T A MJ x MJ 90Âº MJ x MJ 60Âº MJ x MJ 45Âº MJ x MJ 30Âº MJ x MJ 22 Â½Âº MJ x MJ 11 Â¼Âº MJ x MJ 5 â…Âº MJ x MJ BENDS BENDS (Â¼) BENDS (1/6) BENDS (â…›) BENDS (1/12) BENDS (1/16) BENDS (1/32) BENDS (1/64) NOM. WT WT WT WT WT WT WT T A A A A A A A SIZE (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) 2 0.30 3.25 14 - - 1.80 13 - - 1.00 9 1.00 8 - - 3 0.33 3.50 23 - - 1.50 21 - - 1.00 16 1.00 14 - - 4 0.34 4.00 27 - - 2.00 23 - - 1.50 18 1.25 16 1.25 16 6 0.36 5.00 39 - - 3.00 32 - - 2.00 32 1.50 30 1.50 27 8 0.38 6.50 57 - - 3.50 46 3.00 44 2.50 46 1.75 42 1.75 38 10 0.40 7.50 89 - - 4.50 70 - - 3.00 64 2.00 58 2.00 56 12 0.42 9.00 108 - - 5.50 86 - - 3.50 84 2.25 74 2.25 73 14 0.47 11.50 180 - - 5.00 145 - - 3.75 140 2.50 128 - - 16 0.50 12.50 264 - - 5.50 202 - - 3.75 178 2.50 148 2.50 150 18 0.54 14.00 335 - - 6.00 250 - - 4.50 255 3.00 205 - - 20 0.57 15.00 400 - - 7.00 305 - - 4.50 262 3.00 245 3.00 239 24 0.61 17.00 565 10.50 479 7.50 405 6.00 385 4.50 412 3.00 315 3.00 317 30 0.66 21.50 1005 13.50 843 11.50 798 9.75 692 6.75 665 4.75 568 4.75 568 36 0.74 24.50 1562 17.00 1350 11.50 1164 11.00 1080 7.75 960 5.00 840 5.00 825 42 0.82 29.25 2506 19.00 2150 14.00 1792 12.00 1465 9.00 1350 6.00 1319 6.00 1125 48 0.90 33.25 3045 21.00 2650 15.00 2390 13.25 2075 10.00 1886 6.50 1700 6.50 1600 B B B T B B B B A T A TT A A T A T A A T T MJ x PE 90Âº MJ x PE 60Âº MJ x PE 45Âº MJ x PE 30Âº MJ x PE 22 Â½Âº MJ x PE 11 Â¼Âº MJ x PE 5 5/8Âº MJ x PE BENDS BENDS (Â¼) BENDS (1/6) BENDS (â…›) BENDS (1/12) BENDS (1/16) BENDS (1/32) BENDS (1/64) NOM. WT WT WT WT WT WT WT T A B A B A B A B A B A B A B SIZE (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) 3 0.33 3.50 8.50 16 - - - 1.50 7.00 13 - - - 1.00 6.50 12 1.00 6.50 12 - - - 4 0.34 4.00 9.50 22 - - - 2.00 7.50 19 - - - 1.50 7.00 18 1.25 6.25 17 - - - 6 0.36 5.00 12.00 40 - - - 3.00 8.50 31 - - - 2.00 7.50 29 1.50 7.00 27 - - - 8 0.38 6.50 12.50 61 - - - 3.50 9.00 46 - - - 2.50 8.00 43 1.75 7.25 39 - - - 10 0.40 7.50 13.00 83 - - - 4.50 10.00 68 - - - 3.00 8.50 61 2.00 7.50 52 - - - 12 0.42 9.00 14.50 114 - - - 5.50 11.00 95 - - - 3.50 9.00 81 2.25 7.75 70 - - - 14 0.47 11.50 19.50 197 - - - 5.00 13.00 148 - - - 3.75 11.25 133 2.50 10.50 122 - - - 16 0.50 12.50 20.50 248 - - - 5.50 13.50 184 - - - 3.75 11.75 166 2.50 10.50 148 - - - 18 0.54 14.00 21.00 325 - - - 6.00 13.00 235 - - - 6.00 13.00 235 6.00 13.00 235 - - - 20 0.57 15.00 22.50 390 - - - 7.00 14.00 300 - - - 7.00 14.00 300 7.00 14.00 300 - - - 24 0.61 17.00 25.00 575 - - - 7.50 14.50 390 - - - 7.50 14.50 395 7.50 14.50 400 - - - 30 0.66 22.75 31.75 865 13.50 22.50 846 10.50 19.50 715 9.75 18.75 762 6.75 15.75 600 4.75 13.75 535 4.75 13.75 505 36 0.74 24.50 33.50 1355 - - - 12.00 21.00 1040 - - - 7.75 16.75 865 5.00 14.00 725 - - - 42 0.82 29.25 38.25 2055 - - - 14.00 23.00 1460 - - - 9.00 18.00 1200 6.00 15.00 1030 - - - 48 0.90 33.25 4225 2805 - - - 15.00 24.00 1905 - - - 10.00 19.00 1575 6.50 15.50 1290 - - - UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 4 Utility Pipe Fittings and Accessories Compact MJ Fittings ANSI/AWWA C153/A21.53 T1 J T H H MJ x FE TEES MJ x FE TEES (Conâ€™t) NOM. WT NOM. WT T T1 H J T T1 H J SIZE (LBS.) SIZE (LBS.) 3 x 3 0.33 0.33 3.00 5.50 30 30 x 16 0.66 0.50 12.50 23.00 909 4 x 2 0.52 0.39 4.80 4.80 53 30 x 24 0.66 0.61 16.00 25.00 1290 4 x 3 0.34 0.33 3.50 6.50 34 30 x 30 0.66 0.66 20.00 25.00 1355 4 x 4 0.34 0.34 4.00 6.50 40 36 x 6 0.74 0.36 8.00 26.00 980 6 x 3 0.36 0.33 3.50 8.00 50 36 x 14 0.74 0.47 11.10 26.00 1160 6 x 4 0.36 0.34 4.00 8.00 65 36 x 16 0.74 0.50 12.50 26.00 1241 6 x 6 0.36 0.36 5.00 8.00 62 36 x 20 0.74 0.57 15.00 26.00 1381 8 x 4 0.38 0.34 4.00 9.00 65 42 x 6 0.82 0.36 9.00 30.00 1384 8 x 6 0.38 0.36 5.00 9.00 78 42 x 24 0.82 0.61 20.00 30.00 2130 8 x 8 0.38 0.38 6.50 9.00 88 42 x 42 0.82 0.82 30.00 31.00 3878 10 x 4 0.40 0.34 4.00 11.00 90 48 x 20 0.90 0.57 22.00 34.00 2706 10 x 6 0.40 0.36 5.00 11.00 106 48 x 30 0.90 0.66 23.00 34.00 2872 10 x 8 0.40 0.38 6.50 11.00 114 48 x 48 0.90 0.90 33.50 34.00 4038 10 x 10 0.40 0.40 7.50 11.00 126 12 x 4 0.42 0.34 4.00 12.00 118 L 12 x 6 0.42 0.36 5.00 12.00 133 12 x 8 0.42 0.38 6.50 12.00 134 T1 12 x 10 0.42 0.40 7.50 12.00 145 12 x 12 0.42 0.42 8.75 12.00 170 J 14 x 6 0.47 0.36 6.50 14.00 185 14 x 8 0.47 0.38 7.50 14.00 206 T 14 x 10 0.47 0.40 8.50 14.00 244 H H 14 x 12 0.47 0.42 9.50 14.00 284 14 x 14 0.47 0.47 10.50 14.00 305 MJ x SWIVEL PARALLEL TEE W/ SWIVEL GLAND 16 x 6 0.50 0.36 6.50 15.00 207 NOM. WT T T1 H J L 16 x 8 0.50 0.38 7.50 15.00 260 SIZE (LBS.) 16 x 10 0.50 0.40 8.50 15.00 287 6 x 6 0.36 0.36 8.00 12.50 10.00 83 16 x 12 0.50 0.42 9.50 15.00 312 8 x 6 0.38 0.36 9.00 13.50 11.00 105 16 x 14 0.50 0.47 10.50 15.00 348 10 x 6 0.40 0.36 11.00 14.00 13.00 125 16 x 16 0.50 0.50 11.50 15.00 374 12 x 6 0.42 0.36 12.00 16.00 14.00 235 18 x 6 0.54 0.36 6.50 15.50 325 18 x 8 0.54 0.38 7.50 15.50 351 18 x 12 0.54 0.42 9.50 15.50 358 B B 18 x 18 0.54 0.54 12.50 16.50 445 20 x 4 0.57 0.34 6.50 17.00 321 20 x 6 0.57 0.36 6.50 17.00 360 20 x 8 0.57 0.38 8.00 17.00 339 T1 20 x 10 0.57 0.40 9.00 17.00 370 A T 24 x 6 0.61 0.36 7.00 19.00 432 24 x 8 0.61 0.38 8.00 19.00 472 24 x 12 0.61 0.42 10.00 19.00 542 MJ x MJ TRUE WYES 24 x 16 0.61 0.50 12.00 19.00 622 NOM. WT T T1 A B 24 x 18 0.61 0.54 13.00 22.00 680 SIZE (LBS.) 24 x 24 0.61 0.61 16.00 22.00 950 20 x 20 x 20 0.57 0.57 7.50 15.00 550 30 x 6 0.66 0.36 8.00 23.00 692 24 x 14 x 14 0.61 0.47 9.00 11.50 395 30 x 8 0.66 0.38 8.50 23.00 719 30 x 24 x 24 0.66 0.61 8.00 17.00 815 30 x 10 0.66 0.40 9.50 23.00 764 30 x 30 x30 0.66 0.66 10.00 21.50 1380 30 x 12 0.66 0.42 10.00 23.00 796 (Conâ€™t)ïƒ† UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 7 Utility Pipe Fittings and Accessories Full Body MJ Fittings ANSI/AWWA C110/A21.10 T1 J T H H MJ x MJ TEES MJ x MJ TEES (Conâ€™t) NOM. WT NOM. WT T T1 H J T T1 H J SIZE (LBS.) SIZE (LBS.) 2 x 2 0.39 0.39 3.25 3.25 20 24 x 12 0.89 0.75 15.00 19.00 1030 3 x 2 0.48 0.39 3.50 3.50 43 24 x 14 0.89 0.66 15.00 19.00 1055 3 x 3 0.48 0.48 5.50 5.50 55 24 x 16 0.89 0.70 15.00 19.00 1075 4 x 2 0.52 0.39 4.00 4.00 57 24 x 18 0.89 0.75 22.00 22.00 1400 4 x 3 0.52 0.48 6.50 6.50 75 24 x 20 0.89 0.80 22.00 22.00 1450 4 x 4 0.52 0.52 6.50 6.50 80 24 x 24 0.89 0.89 22.00 22.00 1535 4 x 4 x 6 0.52 0.55 8.00 8.00 115 30 x 6 1.03 0.55 18.00 23.00 1730 6 x 2 0.55 0.39 8.00 8.00 78 30 x 8 1.03 0.60 18.00 23.00 1745 6 x 3 0.55 0.48 8.00 8.00 110 30 x 10 1.03 0.68 18.00 23.00 1760 6 x 4 0.55 0.52 8.00 8.00 115 30 x 12 1.03 0.75 18.00 23.00 1780 6 x 6 0.55 0.55 8.00 8.00 125 30 x 16 1.03 0.70 18.00 23.00 1820 6 x 6 x 8 0.55 0.60 9.00 9.00 185 30 x 18 1.03 0.75 18.00 23.00 1845 8 x 2 0.60 0.39 9.00 9.00 125 30 x 20 1.03 0.80 18.00 23.00 1875 8 x 3 0.60 0.48 9.00 9.00 155 30 x 24 1.03 0.89 25.00 25.00 2400 8 x 4 0.60 0.52 9.00 9.00 165 30 x 30 1.03 1.03 25.00 25.00 2595 8 x 6 0.60 0.55 9.00 9.00 175 36 x 6 1.15 0.55 20.00 26.00 2500 8 x 8 0.60 0.60 9.00 9.00 185 36 x 8 1.15 0.60 20.00 26.00 2520 8 x 8 x 12 0.60 0.75 12.00 12.00 280 36 x 10 1.15 0.68 20.00 26.00 2535 10 x 4 0.68 0.52 11.00 11.00 235 36 x 12 1.15 0.75 20.00 26.00 2550 10 x 6 0.68 0.55 11.00 11.00 250 36 x 14 1.15 0.66 20.00 26.00 2570 10 x 8 0.68 0.60 11.00 11.00 260 36 x 16 1.15 0.70 20.00 26.00 2585 10 x 10 0.80 0.80 11.00 11.00 310 36 x 18 1.15 0.75 20.00 26.00 2610 12 x 4 0.75 0.52 12.00 12.00 315 36 x 20 1.15 0.80 20.00 26.00 2635 12 x 6 0.75 0.55 12.00 12.00 325 36 x 24 1.15 0.89 20.00 26.00 2690 12 x 8 0.75 0.60 12.00 12.00 340 36 x 30 1.15 1.03 28.00 28.00 3545 12 x 10 0.87 0.80 12.00 12.00 390 36 x 36 1.15 1.15 28.00 28.00 3745 12 x 12 0.87 0.87 12.00 12.00 410 42 x 12 1.28 0.75 23.00 30.00 3555 14 x 6 0.66 0.55 14.00 14.00 435 42 x 14 1.28 0.66 23.00 30.00 3575 16 x 4 0.70 0.52 15.00 15.00 525 42 x 16 1.28 0.70 23.00 30.00 3595 16 x 6 0.70 0.55 15.00 15.00 540 42 x 18 1.28 0.75 23.00 30.00 3615 16 x 8 0.70 0.60 15.00 15.00 550 42 x 20 1.28 0.80 23.00 30.00 3640 16 x 10 0.70 0.68 15.00 15.00 570 42 x 24 1.28 0.89 23.00 30.00 3690 16 x 12 0.70 0.75 15.00 15.00 590 42 x 30 1.28 1.03 31.00 31.00 4650 16 x 16 0.70 0.70 15.00 15.00 650 42 x 36 1.78 1.58 31.00 31.00 6075 18 x 6 0.75 0.55 13.00 15.50 590 42 x 42 1.78 1.78 31.00 31.00 6320 18 x 8 0.75 0.60 13.00 15.50 605 48 x 12 1.42 0.75 26.00 34.00 4870 18 x 12 0.75 0.75 13.00 15.50 640 48 x 14 1.42 0.66 26.00 34.00 4885 18 x 18 0.75 0.75 16.50 16.50 820 48 x 16 1.42 0.70 26.00 34.00 4905 20 x 6 0.80 0.55 14.00 17.00 725 48 x 18 1.42 0.75 26.00 34.00 4925 20 x 8 0.80 0.60 14.00 17.00 735 48 x 20 1.42 0.80 26.00 34.00 4950 20 X 10 0.80 0.68 14.00 17.00 755 48 x 24 1.42 0.89 26.00 34.00 4995 20 x 12 0.80 0.75 14.00 17.00 775 48 x 30 1.42 1.03 26.00 34.00 5140 20 x 16 0.80 0.70 18.00 18.00 945 48 x 36 1.42 1.15 34.00 34.00 6280 20 x 20 0.80 0.80 18.00 18.00 1020 48 x 42 1.96 1.78 34.00 34.00 8130 24 x 6 0.89 0.55 15.00 19.00 985 48 x 48 1.96 1.96 34.00 34.00 8420 24 x 8 0.89 0.60 15.00 19.00 1000 48 x 36 x 48 1.42 1.15 34.00 34.00 6275 (Conâ€™t) UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 24 Utility Pipe Fittings and Accessories Full Body MJ Fittings ANSI/AWWA C110/A21.10 L1 L2 T T1 J H S T T MJ x PE x MJ TEES MJ SOLID SLEEVES NOM. WT NOM. SHORT SLEEVES LONG SLEEVES T T1 H J S T SIZE (LBS.) SIZE L1 WT (LBS.) L2 WT (LBS.) 4 x 4 0.52 0.52 6.50 6.50 14.50 75 2 0.39 7.50 12 12.00 18 6 x 6 0.55 0.55 8.00 8.00 16.00 120 3 0.48 7.50 25 12.00 30 8 x 6 0.60 0.55 9.00 9.00 17.00 170 4 0.52 7.50 35 12.00 45 8 x 8 0.60 0.60 9.00 9.00 17.00 180 6 0.55 7.50 45 12.00 65 10 x 10 0.80 0.80 11.00 11.00 19.00 310 8 0.60 7.50 65 12.00 85 12 x 4 0.75 0.52 12.00 12.00 20.00 315 10 0.68 7.50 85 12.00 115 12 x 6 0.75 0.55 12.00 12.00 20.00 325 12 0.75 7.50 110 12.00 145 12 x 8 0.75 0.60 12.00 12.00 20.00 340 14 0.66 9.50 150 15.00 195 12 x 10 0.87 0.80 12.00 12.00 20.00 390 16 0.70 9.50 180 15.00 235 12 x 12 0.87 0.87 12.00 12.00 20.00 410 18 0.75 9.50 215 15.00 285 20 0.80 9.50 240 15.00 325 24 0.89 9.50 320 15.00 425 30 1.03 15.00 635 24.00 885 T T 36 1.15 15.00 855 24.00 1190 42 1.28 15.00 1115 24.00 1550 48 1.42 15.00 1385 24.00 1940 2" - 24" 2" - 24" T T SHORT LONG L L2 30" - 48" 30" - 48" CAPS PLUGS ID ID MJ CAPS & PLUGS (SOLID OR TAPPED) T T NOM. WT (LBS.) T MAX. TAP MJ DUAL PURPOSE SLEEVES W/ OVERSIZE GLANDS SIZE CAPS PLUGS 2 0.39 1 Â½ 5 5 NOM. SHORT LONG PIPE SIZE (I.D.) T 3 0.50 2 12 10 SIZE L1 WT (LBS.) L2 WT (LBS.) 4 0.60 3 15 15 4 4.80 - 5.00 5.10 0.52 7.50 35 12.00 35 6 0.65 4 25 25 6 6.90 - 7.10 7.20 0.55 7.50 45 12.00 65 8 0.70 4 45 45 8 9.05 - 9.30 9.40 0.60 7.50 65 12.00 86 10 0.75 4 60 65 10 11.10 - 11.40 11.50 0.68 7.50 85 12.00 115 12 0.75 4 80 85 12 13.20 - 13.50 13.60 0.75 7.50 110 12.00 145 14 0.82 5 120 115 16 17.40 - 17.80 17.94 0.70 --- --- 15.00 236 16 0.89 6 155 145 18 0.96 6 195 185 20 1.03 6 240 225 24 1.16 6 345 335 30 1.03 6 590 573 36 1.15 6 850 815 42 1.28 6 1180 1110 48 1.42 6 1595 1455 *Threads in Accordance with ANSI/ASME B1.20.1 UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 26 Utility Pipe Fittings and Accessories Flanged Fittings ANSI/AWWA C110/A21.10 T T FE CONCENTRIC & ECCENTRIC REDUCERS (Conâ€™t) T1 NOM. WT T T1 L SIZE (LBS.) 20 x 18 0.80 0.75 20.00 410 24 x 10 0.89 0.68 24.00 450 T1 24 x 12 0.89 0.75 24.00 480 L L 24 x 14 0.89 0.66 24.00 490 24 x 16 0.89 0.70 24.00 525 FE CONCENTRIC & ECCENTRIC REDUCERS 24 x 18 0.89 0.75 24.00 550 24 x 20 0.89 0.80 24.00 590 NOM. WT SIZE T T1 L (LBS.) 30 x 8 1.03 0.60 30.00 700 30 x 12 1.03 0.75 30.00 730 2 x 1 Â½ 0.31 0.31 5.50 10 30 x 14 1.03 0.66 30.00 752 2 Â½ x 2 0.31 0.31 5.50 14 30 x 16 1.03 0.70 30.00 770 3 x 2 0.48 0.31 6.00 16 30 x 18 1.03 0.75 30.00 810 3 x 2 Â½ 0.48 0.31 6.00 21 30 x 20 1.03 0.80 30.00 870 4 x 2 0.52 0.31 7.00 25 30 x 24 1.03 0.89 30.00 970 4 x 2 Â½ 0.52 0.31 7.00 28 36 x 16 1.15 0.70 36.00 1105 4 x 3 0.52 0.48 7.00 30 36 x 20 1.15 0.80 36.00 1230 5 x 2 0.50 0.31 8.00 34 36 x 24 1.15 0.89 36.00 1345 5 x 2 Â½ 0.50 0.31 8.00 35 36 x 30 1.15 1.03 36.00 1555 5 x 3 0.50 0.48 8.00 37 42 x 20 1.28 0.80 42.00 1712 5 x 4 0.50 0.50 8.00 41 42 x 24 1.28 0.89 42.00 1820 6 x 1 Â½ 0.55 0.31 9.00 33 42 x 30 1.28 1.03 42.00 2060 6 x 2 0.55 0.31 9.00 35 42 x 36 1.28 1.15 42.00 2345 6 x 2 Â½ 0.55 0.31 9.00 38 48 x 30 1.42 1.03 48.00 2625 6 x 3 0.55 0.48 9.00 40 48 x 36 1.42 1.15 48.00 2950 6 x 4 0.55 0.52 9.00 45 48 x 42 1.42 1.28 48.00 3320 6 x 5 0.55 0.52 9.00 52 54 x 24 0.90 0.89 32.00 1820 8 x 3 0.60 0.48 11.00 60 54 x 30 0.90 0.61 32.00 1625 8 x 4 0.60 0.52 11.00 65 54 x 36 0.90 0.66 28.00 1680 8 x 5 0.60 0.52 11.00 70 54 x 42 0.90 0.76 25.00 1800 8 x 6 0.60 0.55 11.00 75 54 x 48 0.90 0.80 18.00 1695 10 x 3 0.68 0.48 12.00 81 60 x 54 0.94 0.90 15.00 2055 10 x 4 0.68 0.52 12.00 85 Q V Q 10 x 6 0.68 0.55 12.00 90 10 x 8 0.68 0.60 12.00 110 12 x 4 0.75 0.52 14.00 120 V I I 12 x 5 0.75 0.50 14.00 126 O O 12 x 6 0.75 0.55 14.00 130 3"-10" 12"-54" 12 x 8 0.75 0.60 14.00 145 12 x 10 0.75 0.68 14.00 170 BLIND FLANGES (SOLID OR TAPPED) 14 x 6 0.66 0.55 16.00 155 NOM. WT O Q V I 14 x 8 0.66 0.60 16.00 175 SIZE (LBS.) 14 x 10 0.66 0.68 16.00 190 3 7.50 0.75 0.69 3.00 9 14 x 12 0.66 0.75 16.00 220 4 9.00 0.94 0.88 4.00 16 16 x 6 0.70 0.55 18.00 190 6 11.00 1.00 0.94 6.00 25 16 x 8 0.70 0.60 18.00 210 8 13.50 1.12 1.06 8.00 42 16 x 10 0.70 0.68 18.00 235 10 16.00 1.19 1.12 10.00 63 16 x 12 0.70 0.75 18.00 265 12 19.00 1.25 0.81 12.00 85 16 x 14 0.70 0.66 18.00 280 14 21.00 1.38 0.88 14.00 120 18 x 8 0.75 0.60 19.00 240 16 23.50 1.44 1.00 16.00 145 18 x 10 0.75 0.68 19.00 265 18 25.00 1.56 1.06 18.00 164 18 x 12 0.75 0.75 19.00 295 20 27.50 1.69 1.12 20.00 245 18 x 14 0.75 0.66 19.00 310 24 32.00 1.88 1.25 24.00 318 18 x 16 0.75 0.70 19.00 340 30 38.75 2.12 1.44 30.00 500 20 x 8 0.80 0.60 20.00 290 36 46.00 2.38 1.62 36.00 960 20 x 10 0.80 0.68 20.00 310 42 53.00 2.62 1.81 42.00 1300 20 x 12 0.80 0.75 20.00 345 48 59.50 2.75 2.00 48.00 1740 20 x 14 0.80 0.66 20.00 355 54 66.25 3.00 2.25 54.00 2233 20 x 16 0.80 0.70 20.00 390 60 73.00 3.12 2.38 60.00 2845 (Conâ€™t)ïƒ† 64 80.00 3.38 2.56 64.00 3744 UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 49 Joint Restraint Submittal Form StargripÂ® series 3000 Mechanical Joint Wedge Action Restraint for Ductile Iron Pipe Patent #5,772,252 SUBMITTAL INFORMATION PROJECT NAME: ENGINEER: CONTRACTOR: SPEC. SECTION: StargripÂ® series 3000 for Ductile Iron Pipe MEMBER FEATURES & ADVANTAGES â€¢ The Wedge Assembly is designed with a Break-Off Torque Control Nut that will only break off in one direction, ensuring proper installation. â€¢ The StargripÂ® offers a full 5Â° deflection through 12" size, 3Â° on 14"-24", 2Â° on 30"-36" and 1Â° on 42"-48". â€¢ Minimum safety factor of 2:1 â€¢ StargripÂ® sizes 3"-36" are listed with Underwriters Laboratories Inc. and sizes 3"-12" are approved by Factory Mutual Research. â€¢ The Wedge Assembly is designed to fit specific pipe sizes and is field repairable. â€¢ No special tools are required for installation of the StargripÂ®. â€¢ StargripÂ® eliminates tie rods and thrust blocks. â€¢ StargripÂ® may also be used on steel pipe* up to 12" (*transition gasket required on 12" and under). For 14" and larger steel applications, contact Star Pipe. MATERIAL SPECIFICATIONS: â€¢ Gland: Ductile Iron per ASTM A536, Grade 65-45-12 â€¢ Wedges: Ductile Iron per ASTM A536, Grade 65-45-12 heat treated to a minimum of 370 BHN â—† Wedge Finish: Thermally cured fluoropolymer epoxy coating GLAND FINISH OPTIONS (Please check one): HARDWARE OPTIONS (Please check one): Standard: alkyd enamel coating Standard: T-bolts are high strength low alloy steel manufactured in accordance with ANSI/AWWA Optional: StarbondTM TGIC polyester powder coating C111/A21.11-00 applied by an electrostatic spray process Optional: T-bolts and nuts alloy SS 304 per ASTM F593 Optional: Other (specify) _____________________________ Optional: T-bolts and nuts alloy SS 316 per ASTM F593 Optional: T-bolts and nuts Fluoropolymer Star-Blue COUNTRY OF ORIGIN OPTION (Please check one): coated high strength low alloy steel manufactured in accordance with ANSI/AWWA C111/A21.11-00 Import 100% Domestic1 Domestic gland with import components1 (1Please see Domestic Restraint Options Available on our website.) REV.13-1 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 1 Joint Restraint Submittal Form StargripÂ® series 3000 Mechanical Joint Wedge Action Restraint for Ductile Iron Pipe Patent #5,772,252 TECHNICAL INFORMATION 0.75 0.12 STARGRIPÂ® 3000 SPECIFICATIONS* MAX F W/NUTS APPROX NOM. PRESSURE NO. OF NO. OF Please A B C D E F TWISTED G WT. SIZE RATING WEDGES T-BOLTS check sizes: OFF (LBS) (PSI) 3 350 4.84 2.40 4.06 6.19 3/4 9.85 8.78 8.13 2 4 6 4 350 5.92 2.40 4.90 7.50 7/8 11.06 9.62 9.12 2 4 8 6 350 8.02 2.40 7.00 9.50 7/8 13.06 11.72 11.12 3 6 12 8 350 10.17 2.51 9.15 11.75 7/8 15.25 13.84 13.37 4 6 17 10 350 12.22 2.51 11.20 14.00 7/8 17.25 15.88 15.62 6 8 24 12 350 14.32 2.51 13.30 16.25 7/8 19.50 17.98 17.88 8 8 34 14 350 16.40 2.91 15.44 18.75 7/8 21.25 20.12 20.90 10 10 49 16 350 18.50 2.91 17.54 21.00 7/8 23.34 22.22 23.00 12 12 56 18 250 20.60 2.91 19.64 23.25 7/8 26.40 24.90 25.25 12 12 59 20 250 22.70 2.67 21.74 25.50 7/8 28.56 27.00 27.50 14 14 75 24 250 26.90 3.50 25.94 30.00 7/8 33.86 32.34 31.54 16 16 139 30 250 33.29 3.49 32.17 36.88 1-1/8 40.12 38.62 39.12 20 20 199 36 250 39.59 3.49 38.47 43.75 1-1/8 46.42 44.92 46.00 24 24 232 42 250 45.79 5.15 44.75 50.62 1-3/8 54.86 53.32 53.12 28 28 400 48 250 52.09 5.15 51.05 57.50 1-3/8 61.16 59.62 60.00 32 32 488 *All dimensions in inches except where indicated. Notes: â€¢ StargripsÂ® must be adequately wrapped or protected if they are covered by concrete to ensure that concrete does not enter the wedge pocket. â€¢ For applications exceeding the maximum pressure ratings listed, please contact Star Pipe Products for recommendations (see Tandem StargripÂ®). â€¢ For applications on existing pipe, the pipe needs to be structurally sound and the surface needs to be relatively free of any corrosive by-products in order for the wedges to function properly. Please contact Star Pipe Products for technical assistance. â€¢ Sizes 42" & 48" require extra long 1 Â¼" x 8 Â½" T-bolts. REV.13-1 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 2 Red Rubber Flange Gaskets UNITED ANSI B16.1 - 125# BRAND Full Face Type Ring Type O.D. B.C. I.D. I.D. O.D. A Bolt A Notes: holes Red Rubber Flange Gaskets: Full Face and Ring Type to fit ANSI B16.1, Class 125 Flanges Reference Standard: ANSI B16.1 - Flange Dimensions - Class 125 Material Standard: Red Rubber - ASTM D1330, Grade II, SBR/Durometer 75+/-5 Shore A/Red Color No. of Nominal Part No. Part No. OD OD Box Qty. Box Qty. ID A BC Bolt Size (Full Face) (Ring) (Full Face) (Ring) (Full Face) (Ring) Holes 1 FFF-025-100 FRG-025-065 1.31 4.25 2.63 1/8 3.12 4 25 25 15-1/4 F0FF-030-11 F6RG-030-08 12.6 40.6 38.0 10/ 34.5 255 2 1-1/2 FFF-040-125 FRG-040-085 1.91 5.00 3.38 1/8 3.62 4 25 25 20F0FF-050-15 F0RG-050-10 20.1 60.0 38.9 15/ 44 5.7 252 2-1/2 FFF-065-175 FRG-065-120 2.60 7.00 4.70 1/8 5.50 4 25 25 38F2FF-080-18 F0RG-080-13 30.1 75.5 58.1 10/ 64.0 255 2 4 FFF-100-210 FRG-100-162 4.10 9.00 6.30 1/8 7.50 8 25 25 50F4FF-125-25 F0RG-125-19 50.1 100.0 78.6 10/ 88 5.5 252 6 FFF-150-275 FRG-150-218 6.10 11.00 8.50 1/8 9.50 8 25 25 80F2FF-200-34 F0RG-200-27 80.1 103.5 180.6 15/ 18 51.7 252 10 FFF-250-400 FRG-250-328 10.10 16.00 12.80 1/8 14.25 12 25 25 152 F8FF-300-47 F0RG-300-37 102.1 159.0 184.7 10/ 127.0 10101 14 FFF-350-525 FRG-350-445 14.20 21.00 17.15 1/8 18.75 12 10 10 186 F0FF-400-58 F0RG-400-51 106.2 203.5 189.9 15/ 261.2 10101 18 FFF-450-625 FRG-450-542 18.20 25.00 21.15 1/8 22.75 16 10 10 280 F6FF-500-68 F0RG-500-60 200.2 207.5 283.6 10/ 205.0 20101 24 FFF-600-800 FRG-600-717 24.20 32.00 27.95 1/8 29.50 20 10 10 350 F-FF-750-98 350.00 3-8.7 10/8 386.0 25 - 36 FFF-900-1165 - 36.00 46.00 - 1/8 42.75 32 5 - 452 F-FF-1000-134 402.00 5-3.0 10/8 469.5 35 - 48 FFF-1200-1510 - 48.00 59.50 - 1/8 56.00 44 5 - Dimensions in inches Napac, Inc. 310 229 Southbridge Street, Worcester, MA 01608 Tel: (800) 807-2215 â€¢ Fax: (800) 807-2214 NOTES: OLYMPIC FOUNDRY INC. 24", 30" 36" VALVE BOX BASE MATL: Cast Iron ASTM A48, CL30 RATING: H-20 PART NO. 940 APPROX WT: 35 Lbs REV: A DATE: 7/16/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 7/16/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 7/16/2003 DWG #: 940 24 BOTTOM SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG NOTES: OLYMPIC FOUNDRY INC. 18" VALVE BOX TOP MATL: Cast Iron ASTM A48, CL30 RATING: H-20 PART NO. 940 APPROX WT: 33 Lbs REV: A DATE: 7/16/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 7/16/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 7/16/2003 DWG #: 940 18 TOP SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG NOTES: Also available with 2" skirt OLYMPIC FOUNDRY INC. VALVE BOX COVER MATL: Cast Iron ASTM A48,CL30 RATING: H-20 PART NO. 940 APPROX WT: 9 Lbs REV: A DATE: 7/21/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 7/21/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 7/21/2003 DWG #: 940 SHALLOW LID SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG CAT NO. PARTS LIST MATERIAL 1 OPERATING NUT BRONZE 2 HOLD DOWN NUT BRONZE 3 WEATHER SEAL "O" RING BUNA-N 4 TOP BONNET D.I. 5 THRUST WASHER DELRIN 6 OPERATING STEM TOP 24 1/4" STEEL 7 HOSE NOZZLE "O" RING ** BUNA-N 8 HOSE NOZZLE ** BRONZE 9 HOSE NOZZLE GASKET ** RUBBER 10 HOSE NOZZLE CAPS ** C.I. 11 PUMPER NOZZLE "O" RING BUNA-N 12 PUMPER NOZZLE GASKET RUBBER 13 PUMPER NOZZLE BRONZE 14 PUMPER NOZZLE CAP C.I. 15 * BRASS COLLAR` BRASS 16 RESERVOIR "O" RING BUNA-N 17 "QUAD" SEAL RING BUNA-N 18 TOP BONNET BOLTS & NUTS ZN. PL. STL. 19 DRIVE-LOC PIN STN. STL. 20 NOZZLE STANDPIPE D.I. 21 SAFETY FLG. BOLTS & NUTS ZN. PL. STL. 22 SWIVEL FLANGES (FRANGIBLE) C.I. 23 STEM COUPLING (FRANGIBLE) GALV. STL. 24 COUPLING PIN & COTTER KEY STN. STL. 25 STANDPIPE LOWER SECTION D.I. 26 OPERATING STEM LOWER STEEL 27 DRIP SHUT OFF BRONZE 28 INSERTS RUBBER 29 VALVE SEAT BRONZE 30 * BRONZE LINER BRONZE 31 VALVE SEAT "O" RING BUNA-N 32 BRASS DRAIN HOLE BUSHING ** BRASS 33 INLET FLANGE "O" RING BUNA-N 34 SEATING VALVE RUBBER RUBBER 35 VALVE WASHER D.I./EPOXY 36 BOTTOM INLET D.I./EPOXY 37 INLET FLG. BOLTS & NUTS ** STN. STL. 38 CHAINS ** ZN. PL. STL. 39 SET SCREW (1/4 - 20 SS CONE PT) ** STN. STL. 40 PIPE PLUG 1/4 NPTF SS HX STN. STL. 41 DUST CAP D.I. 42 DUST CAP BOLT STN. STL. * NOT A REPLACEMENT PART ** NOT SHOWN SUBMITTAL INFORMATION Iron Service Saddles - (FCD202-xxx-TAP style) DUAL BAND EPOXY COATING IRON SERVICE SADDLES FOR USE ON DUCTILE IRON AND A/C PIPE 5" Finish: Epoxy Coating Threads- CC or IP per AWWA C800 Nylatron Coated Stainless Washers Steel Nuts (both sides) EPDM Gasket Closed Lug Stainless Stainless Steel Studs Stainless Steel Bands Steel Washers (open lug side) Nom. Pipe O.D. Approx. Catalog î€³ Submitted Size Range Wt. Lbs. Number Item(s) 2" 2.35 - 2.50 2.8 FCD202-250-TAP * Saddles with this pipe range are not available with 2" CC 2-1/2" 2.75 - 2.90 2.8 FCD202-290-TAP (CC7) or 2-1/2" IP (IP8) threads. *3.46 - 3.80 4.8 FCD202-380-TAP 3" ** These saddles with 1-1/4" through 2-1/2" taps fit the top of *3.80 - 4.25 5.5 FCD202-425-TAP the listed range only. Example FCD202-480-CC7 fits 4.80" **4.26 - 4.80 5.4 FCD202-480-TAP pipe O.D. only. â–²4.74 - 5.00 5.4 FCD202-500-TAP 4" *4.74 - 5.26 5.4 FCD202-526-TAP â–² This saddle is only available with 2" CC (CC7) or â–²4.97 - 5.26 5.4 FCD202-526-TAP 2-1/2" IP (IP8) threads. *4.50 - 5.40 5.4 FCD202-540-TAP 5.94 - 6.69 5.7 FCD202-669-TAP 6.63 - 6.90 5.7 FCD202-690-TAP 6" 6.84 - 7.60 6.7 FCD202-760-TAP 6.63 - 7.61 6.7 FCD202-761-TAP 7.93 - 8.71 6.8 FCD202-871-TAP Outlet Tap Code 8.63 - 9.05 8.2 FCD202-905-TAP 8" 8.99 - 9.79 8.4 FCD202-979-TAP CC (AWWA) Thread 8.63 - 9.80 8.4 FCD202-980-TAP Thread Code Number î€³ Submitted Item(s) 10.00 - 10.75 9.4 FCD202-1075-TAP 3/4" CC CC3 10.75 - 11.10 9.0 FCD202-1110-TAP 1" CC CC4 10" 11.10 - 12.12 10.8 FCD202-1212-TAP 1-1/4" CC âˆ† CC5 10.64 - 12.13 10.8 FCD202-1213-TAP 1-1/2" CC CC6 12.00 - 12.75 11.0 FCD202-1275-TAP 2" CC CC7 12.75 - 13.20 9.0 FCD202-1320-TAP 12" IP Thread 13.20 - 14.38 12.8 FCD202-1438-TAP Thread Code Number î€³ Submitted Item(s) 12.62 - 14.39 12.8 FCD202-1439-TAP 15.30 - 16.25 11.9 FCD202-1625-TAP 3/4" IP IP3 14" 16.30 - 17.25 12.9 FCD202-1725-TAP 1" IP IP4 17.40 - 18.40 13.1 FCD202-1840-TAP 1-1/4" IP âˆ† IP5 16" 18.50 - 19.25 12.3 FCD202-1925-TAP 1-1/2" IP IP6 18" 19.50 - 20.50 13.1 FCD202-2050-TAP 2" IP IP7 21.20 - 22.20 13.2 FCD202-2220-TAP 20" 2-1/2" IP IP8 22.50 - 23.50 13.3 FCD202-2350-TAP 23.80 - 24.80 13.4 FCD202-2480-TAP âˆ† Contact factory for availability 24" 25.60 - 26.50 13.9 FCD202-2650-TAP 30" 31.74 - 32.74 14.8 FCD202-3274-TAP FEATURES â€¢ Body made of high strength ductile iron per ASTM A536 â€¢ Each dual band and 5/8" UNC threaded studs are 18-8 type 304 stainless steel. For saddles 3" or smaller, studs are 1/2" â€¢ Gasket is EPDM rubber per ASTM D2000 â€¢ Finish on saddle body is fusion-bonded epoxy coating â€¢ UL Classified to ANSI/NSF Standard 61 The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 01/22/18 SUBMITTAL INFORMATION Ballcorp Corporation Stops - (FB1000-xx-Q-NL style) AWWA/CC TAPER THREAD INLET BY QUICK JOINT FOR COPPER OR PLASTIC TUBING (CTS) OUTLET External Nut Stop EPDM O-ring Solid one piece tee-head and stem Molded EPDM rubber seat with reinforcing ring supports the ball Dual EPDM O-rings in the stem Body Outlet Threads AWWA/CC Threads Quick Joint Nut Stainless Steel Gripper Inlet Outlet Molded Spring Tip Gasket provides Hydraulic Seal Length External Nut Stop Fluorocarbon-coated brass ball Image shown above is an FB1000-4-Q-NL V I O V B O A. P âœ“ S S S S L T W. L N I() 3/4" 3/4" 3/4" 4-19/64" 3/4" Flare Copper 1.6 FB1000-3-Q-NL 1" 1" 1" 4-31/64" 1" Flare Copper 2.6 FB1000-4-Q-NL 1" 1" 1-1/4" 4-5/16" 1-1/4" Special Thread 3.4 FB1000-45-Q-NL 1-1/4" 1-1/4" 1-1/4" 5-21/32" 1-1/4" Special Thread 4.3 FB1000-5-Q-NL 1-1/2" 1-1/2" 1-1/2" 5-45/64" 1-1/2" Special Thread 5.4 FB1000-6-Q-NL 2" 2" 2" 7-1/16" 2" Special Thread 8.2 FB1000-7-Q-NL Note: Ford recommends using insert stiffeners with plastic pipe or tubing. FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identification â€¢ Certified to NSF/ANSI Standard 61 and NSF/ANSI Standard 372 where applicable â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Ends are integral or secured with adhesive to prevent unintentional disassembly â€¢ 300 PSI working pressure The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 08/23/18 SUBMITTAL INFORMATION Quick Joint Coupling - (C84-xx-Q-NL style) MALE IRON PIPE THREAD BY QUICK JOINT FOR COPPER OR PLASTIC TUBING (CTS) Male Iron Pipe Threads External Nut Stop Molded Spring Tip Stainless Steel Gripper Quick Joint Nut Gasket Provides Hydraulic Seal Iron Pipe Size Quick Joint Size Length D A. P 3 S L M I P Q.J. CTS W. L N I() 1/2" 1/2" 2" 0.5 C84-11-Q-NL 3/4" 1/2" 2-7/32" 0.5 C84-31-Q-NL 3/4" 5/8" 2-1/4" 0.6 C84-32-Q-NL 3/4" 3/4" 2-1/4" 0.6 C84-33-Q-NL 3/4" 1" 2-3/8" 0.7 C84-34-Q-NL 1" 3/4" 2-19/32" 0.7 C84-43-Q-NL 1" 1" 2-9/16" 0.8 C84-44-Q-NL 1" 1-1/4" 2-15/32" 1.3 C84-45-Q-NL 1" 1-1/2" 2-9/16" 1.5 C84-46-Q-NL 1-1/4" 1-1/4" 2-5/8" 1.4 C84-55-Q-NL 1-1/2" 1-1/2" 3" 1.8 C84-66-Q-NL 2" 2" 3-1/4" 2.3 C84-77-Q-NL Note: Ford recommends insert stiffeners when using plastic pipe or tubing. FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identification â€¢ Certified to NSF/ANSI Standard 61 and NSF/ANSI Standard 372 where applicable â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Body design provides octagonal wrench flats for proper installation The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 06/26/19 SUBMITTAL INFORMATION Quick Joint Coupling - (C14-xx-Q-NL style) FEMALE IRON PIPE THREAD BY QUICK JOINT FOR COPPER OR PLASTIC TUBING (CTS) Iron Pipe Threads External Nut Stop Quick Joint Nut Stainless Steel Gripper for Axial Restraint FIP Size Quick Joint Size Length Molded Spring Tip Gasket Provides Hydraulic Seal D A. P 3 S L F I P Q.J. CTS W. L N I() 1/2" 1/2" 1-9/16 0.4 C14-11-Q-NL 3/4" 3/4" 1-1/4" 0.6 C14-33-Q-NL 3/4" 1" 1-3/4" 0.9 C14-34-Q-NL 1" 3/4" 1-3/4" 0.7 C14-43-Q-NL 1" 1" 2-1/8" 0.9 C14-44-Q-NL 1-1/4" 1-1/4" 2-3/16" 1.5 PJA4-45-C14-55-Q-NL 1-1/2" 1-1/2" 2-7/16" 2.3 C14-66-Q-NL 2" 2" 2-5/8" 2.8 C14-77-Q-NL Note: Ford recommends insert stiffeners when using plastic pipe or tubing FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identification â€¢ Certified to NSF/ANSI Standard 61 and NSF/ANSI Standard 372 where applicable â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Sleeve design provides hexagonal wrench flats for proper installation The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 09/06/18 SUBMITTAL INFORMATION 80 Series Coppersetter - (VBH87-xxB-11-77-NL style) FLANGED ANGLE BALL VALVE BY FLANGED ANGLE CHECK VALVE WITH BY-PASS (2" METER) FEMALE IRON PIPE THREAD VERTICAL INLET AND OUTLET 17" Meter Spacing Flanged Angle Flanged Angle Ball Valve Check Valve Meter Support Bracket Height Copper Tube By-Pass Ball Valve 2-1/8" 1-1/8" FIP Inlet FIP Outlet SERVICE LINE CONNECTION A. C 3S H FIP I FIP O W. L. N I() 12" 32.0 VBH87-12B-11-77-NL 15" 33.0 VBH87-15B-11-77-NL 18" 34.0 VBH87-18B-11-77-NL 2" 2" 21" 36.0 VBH87-21B-11-77-NL 24" 37.0 VBH87-24B-11-77-NL 27" 39.0 VBH87-27B-11-77-NL FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identiï¬ cation â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Constructed with Type K copper conforms to ASTM B88, UNS C12200 â€¢ All Ford Meter Setters are assembled with lead-free solder â€¢ Meter support brackets are standard â€¢ Padlock wing is standard on all angle meter ball valves or key valves â€¢ Drop-in rubber gaskets are included with all meter flanges â€¢ Optional High By-pass. Add "HB" following the height. Example: VBH87-12HB-11-77-NL The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 06/26/17 ADS, Inc. Drainage Handbook Specifications â™¦ 1-1 ________________________________________________________________________________________________ ADS POTABLE WATER SERVICE PIPE (IPS) PIPE SPECIFICATIONS Scope This specification describes ADS Potable Water Service Pipe (IPS) pipe SIDR 19, SIDR 15, SIDR 11.5, SIDR 9, and SIDR 7 for use in potable water service applications. Pipe Requirements ADS potable water service pipe shall meet the requirements of ASTM D2239, AWWA C901 and NSF Standards 14 and 61. Pipe dimensions shall meet Iron Pipe Size (IPS) standards. Material Properties Pipe material shall be high-density polyethylene conforming to the minimum requirements of cell classification 445574C as defined and described in ASTM D3350, except that carbon black content should not exceed 3.0%. The resin shall have a material designation code of PE4710 by the Plastic Pipe Institute. Disinfection/Maintenance The active chlorine content of disinfecting solutions shall not exceed 12%. All disinfecting solution must be flushed from all lines within the system. Industry accepted procedures, like ANSI/AWWA C651 Disinfecting Water Mains, should be followed for both new and repaired potable water lines. Installation Installation is similar to other flexible pipe products. Methods including direct bury, plowing or pulling are applicable per local, state or federal guidelines for the application. Pipe Properties 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" Inside Diameter 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.060 +0.02 0.060 +0.02 0.060 +0.02 0.073 +0.02 0.085 +0.02 0.109 +0.020 9 in (mm) (1.5 +0.51) (1.5 +0.51) (1.5 +0.51) (1.9 +0.51) (2.2 +0.51) (2.8 +0.51) Pressure Rating 100 100 100 100 100 100 SIDR 1 @ 730F psi (kPa) (689) (689) (689) (689) (689) (689) Weight gm/ft 28 Â±2 38 Â±2 47 Â±2 80 Â±3 96 Â±3 190 Â±5 (gm/m) (92 Â±7) (125 Â±7) (154 Â±7) (262 Â±10) (315 Â±10) (623 Â±16) Inside Diameter 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.060 +0.02 0.060 +0.02 0.070 +0.02 0.092 +0.02 0.107 +0.02 0.138 +0.020 in (mm) (1.5 +0.51) (1.5 +0.51) (1.8 +0.51) (2.3 +0.51) (2.7 +0.51) (3.5 +0.51) Pressure Rating 125 125 125 125 125 125 SIDR 15@ 730F psi (kPa) (862) (862) (862) (862) (862) (862) Weight gm/ft 30 Â±2 39 Â±2 56 Â±2 97 Â±3 129 Â±3 200 Â±5 (gm/m) (98 Â±7) (128 Â±7) (184 Â±7) (318 Â±10) (423 Â±10) (656 Â±16) Inside Diameter 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 in (mm) 15.8 Â±0.25 20.9 Â±0.381 26.6 Â±0.51 35.1 Â±0.51 40.9 Â±0.51 52.5 Â±0.51 Wall Thickness 0.060 +0.02 0.072 +0.02 0.091 +0.02 0.120 +0.02 0.140 +0.02 0.180 +0.020 in (mm) (1.5 +0.51) (1.8 +0.51) (2.3 +0.51) (3.0 +0.51) (3.6 +0.51) (4.6 +0.51) Pressure Rating 160 160 160 160 160 160 SIDR 11.5@ 730F psi (kPa) (1103) (1103) (1103) (1103) (1103) (1103) Weight gm/ft 30 Â±2 50 Â±2 72 Â±2 125 Â±3 146 Â±3 248 Â±5 (gm/m) (98 Â±7) (164 Â±7) (236 Â±7) (410 Â±10) (479 Â±10) (814 Â±16) ï›™ ADS, Inc., January 2015 ADS, Inc. Drainage Handbook Specifications â™¦ 1-2 ________________________________________________________________________________________________ Pipe Properties (continued) Inside 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 Diameter in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.069 +0.02 0.092 +0.02 0.117 +0.02 0.153 +0.02 0.179 +0.02 0.230 +0.028 in (mm) (1.8 +0.51) (2.3 +0.51) (3.0 +0.51) (3.9 +0.51) (4.5 +0.51) (5.8 +0.71) SIDR 9Pressure 200 200 200 200 200 200 Rating @ 730F psi (kPa) (1379) (1379) (1379) (1379) (1379) (1379) Weight gm/ft 32 Â±2 53 Â±2 88 Â±3 155 Â±3 185 Â±5 330 Â±5 (gm/m) (105 Â±7) (174 Â±7) (289 Â±10) (509 Â±10) (607 Â±16) (1083 Â±16) Inside 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 +0.02 Diameter in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.089 +0.02 0.118 +0.02 0.150 +0.02 0.197 +0.02 0.230 +0.03 0.295 +0.035 in (mm) (2.3 +0.51) (3.0 +0.51) (3.8 +0.51) (5.0 +0.51) (5.8 +0.71) (7.5 +0.89) SIDR 7Pressure 250 250 250 250 250 250 Rating @ 730F psi (kPa) (1724) (1724) (1724) (1724) (1724) (1724) Weight gm/ft 38 Â±2 71 Â±2 116 Â±3 210 Â±5 227 Â±5 440 Â±8 (gm/m) (125 Â±7) (233 Â±7) (381 Â±10) (689 Â±16) (745 Â±16) (1443 Â±26) * Additional SIDRs may be available. Contact an ADS Representative for regional availability. ï›™ ADS, Inc., January 2015 1324 BCF 1324 CARSONÂ® Heavywall in 14 in in 1 2 1 2 6 23 1 6 in 12â€ BODY 2 Material: HDPE Model: 13â€ x 24â€ Weight: 17 lbs Wall Type: Straight Mouseholes: 0-4 Performance: ANSI/SCTE-77 Tier 8, WUC 3.6, 12â€ ASTM C857 A-8, Exceeds 20,000 lb minimum load failure in 81 4 in 173 4 in in 213 4 18â€ BODY 1 4 12 Material: HDPE Model: 13â€ x 24â€ Weight: 23 lbs Wall Type: Straight Mouseholes: 0-4 DIM1E3N2SI4ONS AT BOTTOM OF BOX ARE THE SAME FOR 12" AND 18" DEPTHS Performance: ANSI/SCTE-77 Tier 8, WUC 3.6, in 4 in in ASTM C857 A-8, Exceeds 20,000 1 2 1 61 2 23 1 lb minimum load failure 6 in 2 LOAD RATING / NOTES MEDIUM DUTY ANSI/SCTE TIER 15 For use in non-vehicular traffic situations only. 18â€ Weights and dimensions may vary slightly. Actual load rating is determined by the box and cover combination. in 81 4 Cover comes standard with permanent in 173 4 markings for manufacturer, load rating, model in in 213 4 size and manufacturing location. 1 4 12 DIMENSIONS AT BOTTOM OF BOX ARE THE SAME FOR 12" AND 18" DEPTHS oldcastleinfrastructure.com (800) 735-5566 1324 BCF CARSONÂ® Heavywall COVER OPTIONS Heavy Duty Plastic, Flush Solid Heavy Duty Plastic, Flush with Plastic Reader Door Heavy Duty Plastic, Flush with Cast Iron Reader Door HD Plastic HD Plastic Heavy Duty Plastic, Flush with AMR Recess Flush Solid AMR Recess Heavy Duty Plastic, Flush with AMR Bracket Polymer, Flush Solid Polymer, Flush with Cast Iron Reader Door Composite, Flush Solid Ductile Iron, Flush Solid Ductile Iron, with Max View Reader Door Polymer Composite Flush Solid AMR Recess 17X30 DUCTILE IRON COVER WITH Ductile Iron MAX VIEW READER DOOR AND 2" AMR Max View Door HOLE ADD ON OPTIONS Touch Read Hole AMR Bracket WARNING: Cancer - www.P65Warnings.ca.gov All information contained on this sheet is current at the time of publication. Revision 11/30/18 Oldcastle reserves the right to discontinue or update product information without notice. Â© 2018 Oldcastle Infrastructure (800) 735-5566 oldcastleinfrastructure.com (800) 735-5566 SUBMITTAL SHEET Page 1 Your Logo Here Exxel Pacific, Inc. 323 Telegraph Road Bellingham 98226 360-734-2872 Job: Centennial Park Spec Section Num: N/A Submittal: 310000-01310000-04 Revision: Package No: Package Revision: Date Submitted: 11/20/199/18/19 Response Required: 11/23/199/20/19 Utilities - Water, Sewer, Storm - Piping & Submittal Title: Accessories. Submittal Detail: Contractor: Contractorâ€™s Stamp Project:Centennial Park Exxel Pacific Reviewed By: Matt Tilton Date Submitted: 10/17/19 Submittal #: 310000-03 âœ˜ Reviewed Revise & Resubmit Make Corrections Noted Rejected This submittal/shop drawing has been reviewed by Exxel Pacific for general conformance with design concept only and does not relieve this subcontractor or supplier of the responsibility for conformance with the Contract Documents, all of which have priority over this submittal. Subcontractor/Supplier is responsible for all dimensions and fabrication to be confirmed at the jobsite. Design Team Architect/Engineer Stamp Dykeman Architects CG Engineering H.B. Jaeger, a division of Iconix Waterworks JOB NAME: Centennial Park ADDRESS: 172nd St SE & 67th Ave NE Arlington, Wa 98223 CONTRACTOR: Taylors Excavators SUPPLIER: HB Jaeger, a division of Iconix Waterworks Snohomish, Washington 98290 CONTACT: AARON OLSON 425-293-3336 Line No. No. Description Quantity 1 *** STORM *** 2 3 STORM MAIN 4 NOTE: STORM STRUCTURES BY OTHERS. 5 24" ADS ALREADY SHIPPED AND ON SITE 6 SPU351214 12 SDR35 D3034 GSK PVC GREEN PIPE 14' 378 7 SF445120 12 SDR35 SANDED MH ADAPTER GASKETED 9 8 SFSW406120 12 SDR35 SW SHORT TURN 90 HXH 1 9 SV-FREIGHT-VENDOR APPROX. FREIGHT ON NON-STOCK PVC FITTING 1 10 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 5 11 12 ROOF DRAIN NOTE: PER DTL 1, SHEET C3.6. QUOTING ROOF DRAIN ON 13 ALL BUILDINGS. QTY TBV. 14 SPU350614 6 SDR35 D3034 GSK PVC GREEN PIPE 14' 5,292 15 SF445060 6 SDR35 SANDED MH ADAPTER GASKETED 33 16 SFSW406060 6 SDR35 SW SHORT TURN 90 HXH 240 17 SFSW417060 6 SDR35 SW 45 HXH 1 18 SFSW416060 6 SDR35 SW 22 1/2 HXH 1 19 SFSW401060 6X6 SDR35 SW TEE 21 20 SFSW475060 6 SDR35 SW WYE HXHXH 4 21 22 FOOTING DRAIN NOTE: PER DTL 1, SHEET C3.6. QUOTING FOOTING DRAIN 23 MATERIALS FOR EACH BUILDING. QTYS TBV. 24 SPPU350410 4 SDR35 D3034 SW PERF WHITE PVC PIPE 10' 4,960 25 HBJAMO4545-5X360 5' X 360' AMOCO 4545 NON WOVEN 1 26 NOTE: PRICE PER EACH. QTY TBV. 27 SFSW406040 4 SDR35 SW SHORT TURN 90 HXH 246 28 29 YARD DRAIN 30 NOTE: PER DTL 7, SHEET C3.6. 31 CPN121820 18 ADS AASHTO N-12 WATERTIGHT SOLID PIPE 20' 100 NOTE: QUOTING ADS N-12 PIPE AS ALTERNATIVE TO 32 CONCRETE FOR YARD DRAIN. SUBJECT TO APPROVAL. 33 AMCOF101800 18" C.I. GRATE FOR ADS PIPE 21 34 35 OWS BASIN (13) NOTE: PER COA DTL SD-120. STRUCTURES AND VENT 36 HOLE BY OTHERS. 37 SFSW401060 6X6 SDR35 SW TEE 13 38 SF449060 6 SDR35 PLUG 13 39 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 13 40 41 INFILTRATION DRAIN 42 NOTE: PER DTL 8, SHEET C3.6. 43 SPU350814 8 SDR35 D3034 GSK PVC GREEN PIPE 14' 28 44 SPU350614 6 SDR35 D3034 GSK PVC GREEN PIPE 14' 1,050 45 SPPU3506 6 SDR35 D3034 SW PERF WHITE PVC PIPE 20' 4,540 46 HBJAMO4547 GEO 451-15'X360' NON WOVEN 140N 1 47 NOTE: PRICE PER EACH. QTY TBV. 48 SF445080 8 SDR35 SANDED MH ADAPTER GASKETED 1 49 SF445060 6 SDR35 SANDED MH ADAPTER GASKETED 20 50 SFSW429585 8X6 SDR35 SW CONCENTRIC REDUCER HXH 1 51 SFSW406060 6 SDR35 SW SHORT TURN 90 HXH 66 52 SFSW417060 6 SDR35 SW 45 HXH 9 53 SFSW420060 6" S/W CROSS 226-0066 (4) 5 54 SFSW401060 6X6 SDR35 SW TEE 95 55 SFSW475060 6 SDR35 SW WYE HXHXH 1 56 SFSW447060 6 SDR35 SW CAP 2 57 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 1 58 59 6" INFILTRATION CLEANOUT (146) NOTE: PER COA DTL SS-080. QUOTING ONE CLEANOUT PER EACH 90 DEGREE BEND AND PIPE CONNECTION. QTY 60 TBV. 61 SFSW475060 6 SDR35 SW WYE HXHXH 146 62 SFSW419060 6 SDR35 SW 45 HXS 146 63 PLTT06 6 IPS CORP TWIST-TITE MECH TEST PLUG 146 64 AMCOF146251SET 11 X 8 LOCKING CLEANOUT R&C 146 65 NOTE: QTY TBV. 66 67 OVERFLOW PIPE 68 SPU351214 12 SDR35 D3034 GSK PVC GREEN PIPE 14' 84 69 SF445120 12 SDR35 SANDED MH ADAPTER GASKETED 1 70 AMCOF124525SET 20X24 C.I. VANED LCKNG F&G SM60 1 71 72 WALL DRAIN NOTE: NO WALL DRAIN DETAIL AVAILABLE. QUOTING PER 73 DTL 1, SHEET C3.6. ALL MATERIALS TBV. 74 SPPU3506 6 SDR35 D3034 SW PERF WHITE PVC PIPE 20' 1,350 75 HBJAMO4545-5X360 5' X 360' AMOCO 4545 NON WOVEN 1 76 NOTE: PRICE PER ROLL. QTY TBV. 77 SFSW406060 6 SDR35 SW SHORT TURN 90 HXH 1 78 NOTE: PRICE PER EACH. QTY TBV. 79 SFSW417060 6 SDR35 SW 45 HXH 1 80 NOTE: PRICE PER EACH. QTY TBV. 81 SFSW416060 6 SDR35 SW 22 1/2 HXH 1 82 NOTE: PRICE PER EACH. QTY TBV. 83 84 *** SEWER *** 85 86 SEWER MAIN 87 NOTE: SEWER STRUCTURES BY OTHERS. 88 SPU350814 8 SDR35 D3034 GSK PVC GREEN PIPE 14' 1,232 89 CTAPE06DETSW 6 DETECTABLE TAPE GREEN SEWER 2,000 90 AMCOF112910ASET MH30DT 24" LKG R&C MRKD SEWER 9 91 92 SEWER SIDE 93 SPU350814 8 SDR35 D3034 GSK PVC GREEN PIPE 14' 728 94 SPU350614 6 SDR35 D3034 GSK PVC GREEN PIPE 14' 154 95 CTAPE06DETSW 6 DETECTABLE TAPE GREEN SEWER 1,000 96 HBJCBKNS6 6" KOR-N-SEAL BOOT (S106-12B) 1 97 NOTE: FOR CONNECTION TO EXISTING SSMH. 98 SF447080 8 SDR35 GSK CAP 14 99 SF475060 6X6 SDR35 GSK WYE 1 100 SF447060 6 SDR35 GSK CAP 2 101 102 8" SEWER CLEANOUT (12) 103 NOTE: PER COA DTL SS-080. 104 SF475080 8X8 SDR35 GSK WYE 12 105 SF419080 8 SDR35 45 BXS 12 106 PLTT08 8 IPS CORP TWIST-TITE MECH TEST PLUG 12 107 AMCOF146251SET 11 X 8 LOCKING CLEANOUT R&C 12 108 109 6" SEWER CLEANOUT 110 NOTE: PER COA DTL SS-080. 111 SF475060 6X6 SDR35 GSK WYE 1 112 SF419060 6 SDR35 45 BXS 1 113 PLTT06 6 IPS CORP TWIST-TITE MECH TEST PLUG 1 114 AMCOF146251SET 11 X 8 LOCKING CLEANOUT R&C 1 115 116 *** WATER *** 117 118 CONNECTION TO EXISTING WATER (2) 119 ZFTG0003519 12X12 HOT TAP SS 1 120 ZFTG0003520 12X6 HOT TAP SS 1 NOTE: HOT TAP COST INCLUDES TAPPING SLEEVE, GATE 121 VALVE, CONNECTING MATERIALS AND LABOR. 122 HBJVBBASE24 VALVE BOX 24" BASE ONLY 2 123 HBJVB94018TOP 940 18" VLV.BOX TOP ONLY W/ EARS 2 124 HBJVB940LID 940 VALVE BOX LID ONLY ("WATER") 2 125 126 WATER MAIN 127 DITJMD12052 12 MCWANE TYTON CL52 DI PIPE 1,602 128 HBJIFACCLOCKGSK12 12" FIELD LOCK GASKET 89 129 WWIMJ9012 12 MJ 90 ELL IMP 3 130 WWIMJ4512 12 MJ 45 ELL IMP 2 131 WWIMJT1212 12X12 MJ TEE IMP 3 132 WWIMJCP12 12 MJ SOLID CAP IMP 1 133 WWIMJFT1206 12X6 MJXFLG TEE IMP 18 134 RSSTARIDI120 12 STAR STARGRIP 3000P DI RESTRAINT KIT IMP 56 135 136 2" FIRELINE 137 VGVEJFL060FMNL 6 EJ FLOWMASTER FLGXFLG NRS AWWA C515 OL GV 14 138 HBJVBBASE24 VALVE BOX 24" BASE ONLY 14 139 HBJVB94018TOP 940 18" VLV.BOX TOP ONLY W/ EARS 14 140 HBJVB940LID 940 VALVE BOX LID ONLY ("WATER") 14 141 WWIFLTPT060020 6X2 DI TAPT FLANGE IMP 14 142 WWC8477QNL 2 FORD MIP X QJ CTS CPLG NL 30 143 CBAY6133T20 2 AY CTS PE INSERT 44 144 HBJPEP2CTS100 2" X 100' CTS POLY PIPE 800 145 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 1,000 146 PLBR408020NL 2 BRASS 90 IMP NL 8 147 WWC1477QNL 2 FORD FIP X QJ CTS CPLG NL 14 148 450020 2 SCH40 PLUG MIP 14 149 HBJIFFLPACK6S 6" FLG PACK W/SEAL-TITE RING 28 150 NOTE: SUBJECT TO APPROVAL. 151 152 HYDRANT ASSEMBLY (6) 153 NOTE: PER COA DTL W-010. 154 VGVEJMF060FML 6 EJ FLOWMASTER MJXFLG NRS AWWA C515 OL GV 5 155 HBJVBBASE24 VALVE BOX 24" BASE ONLY 5 156 HBJVB94018TOP 940 18" VLV.BOX TOP ONLY W/ EARS 5 157 HBJVB940LID 940 VALVE BOX LID ONLY ("WATER") 5 158 DITJMD06052 6 MCWANE TYTON CL52 DI PIPE 126 159 HBJIFACCLOCKGSK6 6" FIELD LOCK GASKET 4 160 NBROD07120 3/4 X 10'0 ALL THREAD ROD PLATED 24 161 HBJIFACCEYEBOLT 3/4" X 3-1/2" MJ EYEBOLT W/NUT 24 162 NBWA007 3/4 PLATED WASHER 24 163 NBNUT007 3/4 PLATED HEX NUT 24 164 NBRC07 3/4 ROD COUPLING PLATED 14 165 HBJPB12X12X4 HYDRANT BLOCK 12"X12"X4" 6 166 HWWEJ5CD250MJ54YSA EJ WATERMASTER HYD 4'6 BRY 6 MJ SAFETY YELLOW 6 167 NOTE: BURY DEPTH TBV. COST VARIES. 168 HBJSTORZ412NSTX5 4-1/2" NST X 5" STORZ NZL-CAP 6 169 RSSTARIDI060 6 STAR STARGRIP 3000P DI RESTRAINT KIT IMP 12 170 HBJIFFLPACK6S 6" FLG PACK W/SEAL-TITE RING 5 171 NOTE: SUBJECT TO APPROVAL. 172 173 2" WATER SERVICE (14) 174 NOTE: PER COA DTL W-050. 175 WWSDLFCD2021439CC7 12X2CC FORD FCD202 SDL 1262-1439 14 176 WWFB1000Q20NL 2 FORD CCXQJ CTS BALLCORP NL 14 177 CBAY6133T20 2 AY CTS PE INSERT 71 178 HBJPEP2CTS100 2" X 100' CTS POLY PIPE 900 179 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 1,000 180 WWC8477QNL 2 FORD MIP X QJ CTS CPLG NL 44 181 WWVBH8712B1177NL 2 FORD VBH87-12B-11-77 COPPERSETTER NL 14 182 887170 2X17 SCH80 PVC NIPPLE TBE 14 183 SV-FREIGHT-VENDOR APPROX. FREIGHT ON NON-STOCK PVC FITTINGS 1 184 VBW17302520 CARSON HW 1730-18 BLACK BOX W/MSHL 14 185 HBJMIDST1730RLIDT 1730 DI RDR LID W/2" AMR (4"X4") 14 NOTE: QUOTING 2" AMR AS ALTERNATIVE TO 1-3/4" 186 AMR. SUBJECT TO APPROVAL. 187 PLBR408020NL 2 BRASS 90 IMP NL 8 188 WWC1477QNL 2 FORD FIP X QJ CTS CPLG NL 14 189 450020 2 SCH40 PLUG MIP 14 190 191 1" WATER SERVICE 192 NOTE: PER COA DTL W-040. 193 WWSDLFCD2021439CC4 12X1CC FORD FCD202 SDL 1262-1439 1 194 WWFB1000Q10NL 1 FORD CCXQJ CTS BALLCORP NL 1 195 CBAY6133T10 1 AY CTS PE INSERT 6 196 HBJPEP1CTS100 1" X 100' CTS SIZE POLY PIPE 200 197 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 500 198 WWBA43444WQNL 1 FORD QJ CTS X MTR ANG BV NL 1 199 ZFTG0003521 1 FORD QJ CTS X MTR ANG CV NL 1 200 VBW13242520 CARSON HW 1324-18 BLACK BOX W/MSHL 1 201 HBJMIDST1324RLID4 1324 DI RDR LID W/2" AMR (4"X4") 1 NOTE: QUOTING 2" AMR AS ALTERNATIVE TO 1-3/4" 202 AMR. SUBJECT TO APPROVAL. 203 WWC4444QNL 1 FORD QJ CTS X QJ CTS CPLG NL 1 204 WWC1444QNL 1 FORD FIP X QJ CTS CPLG NL 1 205 450010 1 SCH40 PLUG MIP 1 206 207 1" IRRIGATION SERVICE 208 NOTE: PER COA DTL W-040. 209 WWSDLFCD2021439CC4 12X1CC FORD FCD202 SDL 1262-1439 1 210 WWFB1000Q10NL 1 FORD CCXQJ CTS BALLCORP NL 1 211 CBAY6133T10 1 AY CTS PE INSERT 4 212 HBJPEP1CTS100 1" X 100' CTS SIZE POLY PIPE 100 213 WCUW10THHNSOBLU #10 THHN COPPER WIRE SOLID BLUE 500 214 WWBA43444WQNL 1 FORD QJ CTS X MTR ANG BV NL 1 215 ZFTG0003522 1 FORD QJ CTS X MTR ANG CV NL 1 216 VBW17302520 CARSON HW 1730-18 BLACK BOX W/MSHL 1 217 HBJMIDST1324RLID4 1324 DI RDR LID W/2" AMR (4"X4") 1 NOTE: QUOTING 2" AMR AS ALTERNATIVE TO 1-3/4" 218 AMR. SUBJECT TO APPROVAL. 219 WWC1444QNL 1 FORD FIP X QJ CTS CPLG NL 1 220 450010 1 SCH40 PLUG MIP 1 ***STORM*** Heritage Plasticsâ„¢ PVC Gasketed Sewer Pipe â€¢ ASTM D 3034 SDR 35 â€¢ Gasketed bells â€¢ 14 and 20-foot lay lengths â€¢ OD bevel on spigot â€¢ Green in color Average Approximate Weight Standard Crate Trade Part Length O.D. per 100â€™ Quantity Size Number (feet) (inches) (lbs) (feet) 3040014G 14 1,176 4 4.215 107 3040020G 20 1,680 3060014G 14 490 6 6.275 244 3060020G 20 700 3080014G 14 280 8 8.400 445 3080020G 20 400 10 30100014G 14 10.500 699 154 12 30120014G 14 12.500 1,003 154 15 30150014G 14 15.300 1,491 112 NOTE: Special orders are non-cancelable, non-returnable and non-refundable. heritageplastics.com 14 4" - 27" GASKETED SEWER FITTINGS Fittings are manufactured to ASTM D 3034 SDR 35, ASTM F 679 and ASTM F 1336 specifications. PART LB/ PART LB/ SIZE NUMBER 100 (J) (L) (L1) SIZE NUMBER 100 (J) (L) (L1) 8x4* 988-0084 926 6.18 6.30 10.00 FULL 24x8 115-0248 14000 23.87 24.62 23.00 8x6* 988-0086 997 6.18 6.32 10.00 & 27x4 115-0274 16600 24.25 24.00 20.50 10x4 713-0104 1420 7.50 9.75 11.00 REDUCING 27x6 115-0276 17600 25.25 25.50 22.50 10x6 713-0106 1660 9.00 11.63 13.00 DOUBLE WYE 27x8 115-0278 19500 27.25 27.00 26.50 12x4 713-0124 1940 7.50 12.25 11.00 GxGxGxG 12x6 713-0126 2230 9.00 12.63 13.00 (L) (S) (SD) 15x4 713-0154 3010 8.25 12.00 12.50 4 125-0004 88 .75 4.50 2.75 15x6 713-0156 3360 9.75 14.00 14.50 6 125-0006 199 1.00 3.75 3.75 18x4 713-0184 5370 9.37 13.75 14.75 8 125-0008 426 1.63 4.50 4.38 18x6 713-0186 5910 10.87 15.75 16.75 10 125-0010 725 1.75 5.25 5.00 21x4 713-0214 7970 9.00 15.50 14.00 12 125-0012 1114 2.00 6.25 5.00 PSM G 21x6 713-0216 8530 10.50 17.50 16.00 15 125-0015 2030 2.75 8.00 5.25 X 24x4 713-0244 11470 10.50 16.75 17.00 18 125-0018 3300 3.00 9.12 7.00 SCH40 H 24x6 713-0246 12130 12.00 18.75 19.00 21 125-0021 5400 3.25 10.25 8.50 T-Y 27x4 713-0274 16570 12.25 18.50 20.50 ADAPTER SxG 24 125-0024 8330 4.00 13.50 9.00 27x6 713-0276 17430 13.75 20.25 22.50 27 125-0027 11600 4.50 14.75 10.00 (J) (L) (L1) 6x4 115-0064 600 7.38 8.75 8.75 (L) (L1) 6x6 115-0066 935 9.88 10.13 13.50 4 116-0004 105 8.00 .75 8x4 115-0084 970 9.38 10.25 10.25 6 116-0006 225 8.00 1.00 8x6 115-0086 1285 10.38 11.75 12.25 8* 116-0008 375 7.85 .38 8x8 115-0088 1870 12.38 13.13 16.25 10 116-0010 595 8.00 1.25 10x4 115-0104 1425 10.75 11.75 11.00 12 116-0012 850 8.00 1.25 10x6 115-0106 1800 11.75 13.25 13.00 15 116-0015 1290 8.00 1.25 10x8 115-0108 2535 13.75 14.63 17.00 18 116-0018 1600 8.00 2.00 10x10 115-1010 3975 15.25 16.88 20.00 21 116-0021 2300 8.00 2.00 12x4 115-0124 2010 11.75 13.00 11.00 24 116-0024 3000 8.00 2.00 12x6 115-0126 2325 12.75 14.50 13.00 27 116-0027 4000 8.00 3.00 MANHOLE 12x8 115-0128 3135 14.75 15.88 17.00 ADAPTER 12x10 115-1210 4200 16.25 18.13 20.00 12x12 115-1212 5400 17.75 20.63 23.00 (C) (H) (D) 15x4 115-0154 3000 14.00 15.00 12.50 6x4 126-0064 500 7.00 5.88 3.25 15x6 115-0156 3500 15.00 16.50 14.50 6x6 126-0066 725 8.00 5.75 4.25 15x8 115-0158 4360 17.00 17.88 18.50 8x4 126-0084 875 8.50 7.00 4.13 15x10 115-1510 5675 18.50 20.13 21.50 8x6 126-0086 1115 9.50 7.00 5.13 15x12 115-1512 6875 20.00 22.63 24.50 8x8 126-0088 1600 11.00 7.75 6.63 15x15 115-1515 8775 22.50 25.00 29.50 10x4 126-0104 1310 9.50 8.00 4.50 18x4 115-0184 5400 16.70 17.50 14.75 10x6 126-0106 1800 10.50 8.25 5.50 18x6 115-0186 6000 17.70 19.00 16.75 10x8 126-0108 2535 11.50 8.38 6.50 18x8 115-0188 7200 19.70 20.37 20.75 10x10 126-1010 3975 12.50 8.75 7.50 FULL FULL 21x4 115-0214 7900 18.00 19.75 14.00 12x4 126-0124 2010 9.50 9.00 4.50 & & 21x6 115-0216 8700 19.00 21.25 16.00 12x6 126-0126 2325 10.50 9.75 5.50 REDUCING REDUCING 21x8 115-0218 10100 21.00 22.62 20.00 12x8 126-0128 3135 11.50 10.38 6.50 DOUBLE WYE CROSS 24x4 115-0244 11700 20.87 21.75 17.00 12x10 126-1210 4200 12.50 9.75 7.50 GxGxGxG GxGXGXG 24x6 115-0246 12400 21.87 23.25 19.00 12x12 126-1212 3905 13.50 10.75 8.50 *DENOTES MOLDED FITTING. ALL OTHERS ARE FABRICATED. 410 13 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS 1.0 GPK PVC Sewer Fittings shall be manufactured in accordance with either ASTM D 3034, F1336 or F 679. The PVC material shall have a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D 1784. 2.0 The purpose of GPK in-line fittings is to convey municipal sanitary and industrial wastes, storm water runoff and many other related applications. They are designed to be used in gravity flow and low pressure applications not to exceed 10.8 psi. (74.5 kPa). 3.0 Injection Molded Fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated Fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. A fabricated fitting is considered any fitting made from pipe or a combination of pipe and molded components. 4.0 Chemical Resistance GPK fittings resist attack from certain alcohols, alkalies, salt solutions, acids and other types of chemicals. Refer to chemical resistant chart for suitability. 5.0 Marking. GPK fittings shall be marked with applicable size, â€œPVCâ€, company name or logo, PSM and the ASTM specification number (D 3034, F 1336 or F679). The fittings and/or packaging shall include the manufacturerâ€™s date and shIft code. 6.0 Testing. A test after installation of either low pressure air (Uni-B-6) or a water infiltration-exfiltration test is recommended. 7.0 Deflection Test. The maximum allowable pipe fitting deflection should be 7 Â½% of base ID as shown in table X1.1 of D 3034, and X2.1 of F 679. 8.0 Backfilling and Tamping. Backfilling should follow closely after assembly of pipe and fittings. 8.1 Backfilling. with proper material is important to achieve desired density in haunching area which enables pipe, fitting and soil to work together to meet designed load requirements. This eliminates excess deflection and shear breaks due to heavy loads. Approved material shall be used properly, compacted continuously above and around the pipe and fittings as well as between fitting and trench wall. A cushion of approved material up to a minimum of 12â€ (305mm) over the fittings and between the trench walls shall be applied in accordance with the engineersâ€™ specifications. 8.2 Tamping. This shall be done by hand tamping of the embedment material between the trench wall of the service line fitting and riser connection. Tamping can also be done by mechanical tampers or by using water to consolidate the embedment material. Extreme unstable ground conditions may require wider trenches to enable you to compact a larger area around the pipe and fittings to the density consistent of the original ground surface conditions. 9.0 Service Lines. Normally, service lines from the property line to the collection sewer should be a minimum depth of 3 feet (1 meter) at the property line and should be laid in straight alignment and uniform slope of not less than Â¼â€ per foot (20.8mm/meter) for 4â€ (100mm) nominal pipe and 1/8â€ (10.4mm/meter) per foot for 6â€ (150mm) pipe. Where collection sewers are deeper than 7 feet (2 meters) a vertical standpipe or stack is permitted but not recommended, consult the project engineer for proper installation details. Deep sewer chimney and risers necessitate extreme care during backfilling. Where surface loading is 1 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS anticipated the final backfill must be compacted to a density compatible with those surface loads to be encountered. 9.1 Backfilling around pipe service laterals on slope. Extra attention should be given on slopes to prevent the newly backfilled trench from becoming a â€œFrench Drainâ€. Before backfilling completely there is a tendency for ground and surface water to follow the direction of the looser soil. This flow may wash out soil from under or around pipe and branch line fittings, reducing or eliminating the support needed. To avoid this problem the backfilling should be of greater compaction. Tamping should be done in 4â€ (100mm) layers and continued in this manner all the way up to the ground or surface line of the trench. Concrete collars or other concrete poured around the fitting to stabilize unwanted movement is recommended to prevent water from undercutting the underside of the pipe and fittings. Summary: Due to various ground conditions and different situations, installation techniques vary widely. We warranty our products to be free of manufacturerâ€™s defects. We will not replace the products that are installed or used incorrectly. The design of the systems that our product is used in is a factor that cannot be overlooked. Intro: GPK manufactures PVC sewer fittings in accordance with either ASTM D 3034, F 1336 or F 679 to be used in gravity flow or low pressure applications. Injection molded fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. Material: Fabricated fittings are manufactured from PVC pipe and molded components meeting the requirements of either ASTM D 3034, F 1336 or F 679 for workmanship, extrusion quality, stiffness, impact resistance, dimensions and structural performance. Extruded pipe components are made from PVC material with a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D1784. Injection molded fittings are made from PVC material with a minimum cell classification of 12454 or 13343 as defined in ASTM D 1784. Extrusion Quality: Extruded components are tested in accordance with and meet the requirements of ASTM D 2152 for properly fused PVC. Impact Resistance: Extruded Components are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ â€“ 5â€ 150 Ft-Lbs 6â€ â€“ 8â€ 210 Ft-Lbs 10â€ â€“ 36â€ 220 Ft-Lbs (100mm â€“ 125mm 203 J) (150mm â€“ 200mm 284 J) (250mm â€“ 973mm 299 J) Impact Resistance: Injection molded fittings are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ 50 Ft-Lbs 6â€ â€“ 8â€ 75 Ft-Lbs 10â€ â€“ 12â€ 90 Ft-Lbs (100mm 68 J) (150mm â€“ 200mm 102 J) (250mm â€“ 300mm 122 J) Pipe Stiffness: Extruded Components are tested in accordance with ASTM D 2412. The stiffness equals or exceeds the requirements of ASTM D 3034 and F 679. 2 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS Pipe Flattening: Extruded components are flattened as described in ASTM D 3034 and F 679 until the distance between the plates is 40% of the outside diameter of the pipe. There shall be no splitting, cracking or breaking. Pressure/Pressure Deflection: Gasketed joints are tested in accordance with ASTM D 3212. Pressure: 10 minutes @ 10.8 psi (74.5 kPa) + 10 minutes deflected @ 10.8 psi (74.5 kPa). Vacuum: 10 minutes @ 22 in. Hg (74 kPa) + 10 minutes deflected @ 22 in. Hg (74kPa). Branch Bending: The chemically fused areas around the fabricated branches of tee, wye and tee-wye fittings are tested to ASTM F 1336 to verify their strength and integrity. Pipe Stop Support: Tee and tee-wye fittings are tested to requirements of ASTM F 1336 for pipe stop load support. No cracking or splitting shall occur and pipe spigot shall not protrude into waterway of the fitting. Joining Methods: Chemically Fused Solvent Weld Joints Solvent cement is handled and tested in accordance with ASTM D 2564 and D 2855. The Lap Shear Strength shall equal or exceed 900 psi (6205 kPa) @ 72 hours. Heat Fusion Welded Joints (Butt Fusion Welds) Elastomeric Seals (Gaskets) Must meet all requirements of ASTM F 477 and D 3212. Saddles: Injection Molded saddle tees and saddle wyes shall have skirts with a minimum of 80 square inches (516 square cm) surface area which can be bonded to pipe. Fabricated saddle tees and saddle wyes shall have skirts with a minimum of 160 square inches (1032 square cm) surface area which can be bonded to pipe. The worm drive saddle straps used to fasten the saddles are manufactured with corrosion resistant 300 series AISI stainless steel. GPK does not recommend gasket skirts where air tests are required. Epoxy Reinforced Welds. Threads: Threads shall be American National Standard Taper Pipe Threads (ANSI B1.20.1) which shall be gauged in accordance with ASTM Method D-2122. 3 | P a g e 811 Â® SDR 35 PVC Sewer Pipe Solvent Weld Sewer Pipe (Perforated or Solid) Conforms to ASTM D 3034 & ASTM D 1784, cell class 12454 or 12364 Solid-wall pipe conforms to ASTM D 3034, â€œStandard Specification for PVC Sewer Pipe and Fittingsâ€. Perforated SDR 35 sewer pipe meets the requirements of ASTM D 3034 prior to perforation. Proper hole positioning is assured by centering pipe printline at top. Product manufactured with one integral solvent-weld bell standard per length. Plain end may be available. All pipe is produced in 20-foot lengths. 10-foot lengths may be available. Minimum Approximate Standard Part Number Dimensions (inches) Wall Weight Crate Solid Perforated Size Length OD (Avg) ID (Approx) (inches) per 100â€™ Quantity 3040010 3040010F 4â€ 10â€™ 4.215 3.95 0.120 100 630 3040020 3040020F 4â€ 20â€™ 4.215 3.95 0.120 100 1,260 3060010 3060010F 6â€ 10â€™ 6.275 5.88 0.180 222 260 3060020 3060020F 6â€ 20â€™ 6.275 5.88 0.180 222 520 LOCATION OF PRINT LINE AND PERFORATIONS PRINT LINE 120Â° HOLE 120Â° Perforation Specifications: Two rows of Â½â€ diameter holes with hole spacing of 5â€ center-to-center. Rows are 120Â° apart. 2220 Nugget Way - Eugene, OR 97403 - Phone (877) 811-7473 - Fax (541) 746-6111 I-805 (06/12) SSttyyllee 44554455 Propex 4545 is a polypropylene nonwoven needlepunched fabric. This engineered geotextile is stabilized to resist degradation due to ultraviolet exposure. It is resistant to commonly encountered soil chemicals, mildew and insects, and is non-biodegradable. Polypropylene is stable within a pH range of 2 to 13, making it one of the most stable polymers available for geotextiles today. We wish to advise that Propex 4545 meets the following minimum average roll values: Property Test Method Minimum Average Minimum Average Roll Value Roll Value (English) (Metric) Grab Tensile ASTM-D-4632 90 lbs 0.400 kN Grab Elongation ASTM-D-4632 50 % 50 % Mullen Burst ASTM-D-3786 185 psi 1275 kPa Puncture ASTM-D-4833 55 lbs 0.240 kN Trapezoidal Tear ASTM-D-4533 40 lbs 0.175 kN UV Resistance ASTM-D-4355 70 % at 500 hrs 70 % at 500 hrs AOS(1) ASTM-D-4751 70 sieve 0.212 mm Permittivity ASTM-D-4491 1.8 sec-1 1.8 sec-1 Flow Rate ASTM-D-4491 130 gal/min/ft2 5290 L/min/m2 (1). max. average roll value Propex Fabrics Inc. manufacturers the nonwoven fabric indicated above. The values listed are a result of testing conducted in on-site laboratories. DATE ISSUED: 03/04/05 Propex Fabrics Inc. 260 The Bluffs Austell, GA 30168 PH: 770-944-4569 PH: 800.445.7732 FX: 770.944.4584 (Quotes) FX: 770.944.4678 (Technical) www.geotextile.com Exclusion of Liability This publication should not be construed as engineering advice. While information contained in this publication is accurate to the best of our knowledge, Propex Fabrics Inc. does not warrant its accuracy or completeness. The only warranty made by Propex Fabrics for its products is set forth in our Certificate of Compliance that accompanies our shipment of the product, or such other written warranty as may be agreed by Propex Fabrics and individual customers. Propex Fabrics specifically disclaims all other warranties, express or implied, including without limitation, warranties of merchantability or fitness for a particular purpose, or arising from provision of samples, a course of dealing or usage of trade. ADS, Inc. Drainage Handbook Specifications â™¦ 1-9 ________________________________________________________________________________________________ Â® ADS N-12 WT IB PIPE (per AASHTO) SPECIFICATION Scope This specification describes 4- through 60-inch (100 to 1500 mm) ADS N-12 WT IB pipe (per AASHTO) for use in gravity-flow applications. Pipe Requirements N-12 WT IB pipe (per AASHTO) shall have a smooth interior and annular exterior corrugations. â€¢ 4- through 10-inch (100 to 250 mm) shall meet AASHTO M252, Type S. â€¢ 12- through 60-inch (300 to 1500 mm) shall meet AASHTO M294, Type S or ASTM F2306. â€¢ Manningâ€™s â€œnâ€ value for use in design shall be 0.012. Joint Performance Pipe shall be joined with the N-12 WT IB joint meeting the requirements of AASHTO M252, AASHTO M294, or ASTM F2306. 4- through 60-inch (100 to 1500 mm) shall be watertight according to the requirements of ASTM D3212. Gaskets shall meet the requirements of ASTM F477. Gaskets shall be installed by the pipe manufacturer and covered with a removable, protective wrap to ensure the gasket is free from debris. A joint lubricant available from the manufacturer shall be used on the gasket and bell during assembly. 12- through 60-inch (300 to 1500 mm) diameters shall have a reinforced bell with a polymer composite band. The bell tolerance device shall be installed by the manufacturer. Fittings Fittings shall conform to AASHTO M252, AASHTO M294, or ASTM F2306. Bell and spigot connections shall utilize a spun-on or welded bell and valley or saddle gasket meeting the watertight joint performance requirements of AASHTO M252, AASHTO M294 or ASTM F2306. Field Pipe and Joint Performance To assure watertightness, field performance verification may be accomplished by testing in accordance with ASTM F2487. Appropriate safety precautions must be used when field-testing any pipe material. Contact the manufacturer for recommended leakage rates. Material Properties Virgin material for pipe and fitting production shall be high-density polyethylene conforming with the minimum requirements of cell classification 424420C for 4- through 10-inch (100 to 250 mm) diameters, and 435400C for 12- through 60-inch (300 to 1500 mm) diameters, as defined and described in the latest version of ASTM D3350, except that carbon black content should not exceed 4%. The 12- through 60-inch (300 to 1500 mm) virgin pipe material shall comply with the notched constant ligament-stress (NCLS) test as specified in Sections 9.5 and 5.1 of AASHTO M294 and ASTM F2306 respectively. Installation Installation shall be in accordance with ASTM D2321 and ADS recommended installation guidelines, with the exception that minimum cover in trafficked areas for 4- through 48-inch (100 to 1200 mm) diameters shall be one foot. (0.3 m) and for 54- and 60-inch (1350 and 1500 mm) diameters, the minimum cover shall be 2 ft. (0.6 m) in single run applications. Backfill for minimum cover situations shall consist of Class 1, Class 2 (minimum 90% SPD) or Class 3 (minimum 90%) material. Maximum fill heights depend on embedment material and compaction level; please refer to Technical Note 2.01. Contact your local ADS representative or visit our website at www.ads-pipe.com for a copy of the latest installation guidelines. Pipe Dimensions Nominal Diameter, in (mm) Pipe I.D. 4 6 8 10 12 15 18 24 30 36 42 48 54* 60 in (mm) (100) (150) (200) (250) (300) (375) (450) (600) (750) (900) (1050) (1200) (1350) (1500) Pipe O.D.** 4.8 6.9 9.1 11.4 14.5 18 22 28 36 42 48 54 61 67 in (mm) (122) (175) (231) (290) (368) (457) (559) (711) (914) (1067) (1219) (1372) (1549) (1702) Perforations All diameters available with or without perforations *Check with sales representative for availability by region. **Pipe O.D. values are provided for reference purposes only, values stated for 12- through 60-inch are Â± 1 inch. Contact a sales representative for exact values. Â© ADS, Inc., October 2009 ADS, Inc. Drainage Handbook Specifications â™¦ 1-10 ________________________________________________________________________________________________ Â® N-12 WT IB (per AASHTO) JOINT SYSTEM (Joint configuration & availability subject to change without notice. Product detail may differ slightly from actual product appearance.) Â© ADS, Inc., October 2009 NOTES: OLYMPIC FOUNDRY INC. 18" ADS YARD DRAIN GRATE MATL: Cast Iron ASTM A48, CL30 RATING: N/A PART NO. 10-1800 APPROX WT: 59 Lbs REV: A DATE: 6/23/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 6/23/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 6/23/2003 DWG #: 18 ADS YARD DRAIN SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG ***SEWER*** Heritage Plasticsâ„¢ PVC Gasketed Sewer Pipe â€¢ ASTM D 3034 SDR 35 â€¢ Gasketed bells â€¢ 14 and 20-foot lay lengths â€¢ OD bevel on spigot â€¢ Green in color Average Approximate Weight Standard Crate Trade Part Length O.D. per 100â€™ Quantity Size Number (feet) (inches) (lbs) (feet) 3040014G 14 1,176 4 4.215 107 3040020G 20 1,680 3060014G 14 490 6 6.275 244 3060020G 20 700 3080014G 14 280 8 8.400 445 3080020G 20 400 10 30100014G 14 10.500 699 154 12 30120014G 14 12.500 1,003 154 15 30150014G 14 15.300 1,491 112 NOTE: Special orders are non-cancelable, non-returnable and non-refundable. heritageplastics.com 14 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS 1.0 GPK PVC Sewer Fittings shall be manufactured in accordance with either ASTM D 3034, F1336 or F 679. The PVC material shall have a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D 1784. 2.0 The purpose of GPK in-line fittings is to convey municipal sanitary and industrial wastes, storm water runoff and many other related applications. They are designed to be used in gravity flow and low pressure applications not to exceed 10.8 psi. (74.5 kPa). 3.0 Injection Molded Fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated Fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. A fabricated fitting is considered any fitting made from pipe or a combination of pipe and molded components. 4.0 Chemical Resistance GPK fittings resist attack from certain alcohols, alkalies, salt solutions, acids and other types of chemicals. Refer to chemical resistant chart for suitability. 5.0 Marking. GPK fittings shall be marked with applicable size, â€œPVCâ€, company name or logo, PSM and the ASTM specification number (D 3034, F 1336 or F679). The fittings and/or packaging shall include the manufacturerâ€™s date and shIft code. 6.0 Testing. A test after installation of either low pressure air (Uni-B-6) or a water infiltration-exfiltration test is recommended. 7.0 Deflection Test. The maximum allowable pipe fitting deflection should be 7 Â½% of base ID as shown in table X1.1 of D 3034, and X2.1 of F 679. 8.0 Backfilling and Tamping. Backfilling should follow closely after assembly of pipe and fittings. 8.1 Backfilling. with proper material is important to achieve desired density in haunching area which enables pipe, fitting and soil to work together to meet designed load requirements. This eliminates excess deflection and shear breaks due to heavy loads. Approved material shall be used properly, compacted continuously above and around the pipe and fittings as well as between fitting and trench wall. A cushion of approved material up to a minimum of 12â€ (305mm) over the fittings and between the trench walls shall be applied in accordance with the engineersâ€™ specifications. 8.2 Tamping. This shall be done by hand tamping of the embedment material between the trench wall of the service line fitting and riser connection. Tamping can also be done by mechanical tampers or by using water to consolidate the embedment material. Extreme unstable ground conditions may require wider trenches to enable you to compact a larger area around the pipe and fittings to the density consistent of the original ground surface conditions. 9.0 Service Lines. Normally, service lines from the property line to the collection sewer should be a minimum depth of 3 feet (1 meter) at the property line and should be laid in straight alignment and uniform slope of not less than Â¼â€ per foot (20.8mm/meter) for 4â€ (100mm) nominal pipe and 1/8â€ (10.4mm/meter) per foot for 6â€ (150mm) pipe. Where collection sewers are deeper than 7 feet (2 meters) a vertical standpipe or stack is permitted but not recommended, consult the project engineer for proper installation details. Deep sewer chimney and risers necessitate extreme care during backfilling. Where surface loading is 1 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS anticipated the final backfill must be compacted to a density compatible with those surface loads to be encountered. 9.1 Backfilling around pipe service laterals on slope. Extra attention should be given on slopes to prevent the newly backfilled trench from becoming a â€œFrench Drainâ€. Before backfilling completely there is a tendency for ground and surface water to follow the direction of the looser soil. This flow may wash out soil from under or around pipe and branch line fittings, reducing or eliminating the support needed. To avoid this problem the backfilling should be of greater compaction. Tamping should be done in 4â€ (100mm) layers and continued in this manner all the way up to the ground or surface line of the trench. Concrete collars or other concrete poured around the fitting to stabilize unwanted movement is recommended to prevent water from undercutting the underside of the pipe and fittings. Summary: Due to various ground conditions and different situations, installation techniques vary widely. We warranty our products to be free of manufacturerâ€™s defects. We will not replace the products that are installed or used incorrectly. The design of the systems that our product is used in is a factor that cannot be overlooked. Intro: GPK manufactures PVC sewer fittings in accordance with either ASTM D 3034, F 1336 or F 679 to be used in gravity flow or low pressure applications. Injection molded fittings are produced in sizes 4â€ (100mm) through 12â€ (300mm) diameter. Fabricated fittings are produced in sizes 4â€ (100mm) through 36â€ (973mm) diameter. Material: Fabricated fittings are manufactured from PVC pipe and molded components meeting the requirements of either ASTM D 3034, F 1336 or F 679 for workmanship, extrusion quality, stiffness, impact resistance, dimensions and structural performance. Extruded pipe components are made from PVC material with a minimum cell classification of 12454, 13343 or 12364 as defined in ASTM D1784. Injection molded fittings are made from PVC material with a minimum cell classification of 12454 or 13343 as defined in ASTM D 1784. Extrusion Quality: Extruded components are tested in accordance with and meet the requirements of ASTM D 2152 for properly fused PVC. Impact Resistance: Extruded Components are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ â€“ 5â€ 150 Ft-Lbs 6â€ â€“ 8â€ 210 Ft-Lbs 10â€ â€“ 36â€ 220 Ft-Lbs (100mm â€“ 125mm 203 J) (150mm â€“ 200mm 284 J) (250mm â€“ 973mm 299 J) Impact Resistance: Injection molded fittings are tested in accordance with ASTM D 2444 using a 20 lb (9.07kg). Tup A and a Flat Plate Holder B. The strength shall equal or exceed the values shown below: 4â€ 50 Ft-Lbs 6â€ â€“ 8â€ 75 Ft-Lbs 10â€ â€“ 12â€ 90 Ft-Lbs (100mm 68 J) (150mm â€“ 200mm 102 J) (250mm â€“ 300mm 122 J) Pipe Stiffness: Extruded Components are tested in accordance with ASTM D 2412. The stiffness equals or exceeds the requirements of ASTM D 3034 and F 679. 2 | P a g e 811 SDR35 D 3034 / PS46 F 679 FITTING SPECIFICATIONS Pipe Flattening: Extruded components are flattened as described in ASTM D 3034 and F 679 until the distance between the plates is 40% of the outside diameter of the pipe. There shall be no splitting, cracking or breaking. Pressure/Pressure Deflection: Gasketed joints are tested in accordance with ASTM D 3212. Pressure: 10 minutes @ 10.8 psi (74.5 kPa) + 10 minutes deflected @ 10.8 psi (74.5 kPa). Vacuum: 10 minutes @ 22 in. Hg (74 kPa) + 10 minutes deflected @ 22 in. Hg (74kPa). Branch Bending: The chemically fused areas around the fabricated branches of tee, wye and tee-wye fittings are tested to ASTM F 1336 to verify their strength and integrity. Pipe Stop Support: Tee and tee-wye fittings are tested to requirements of ASTM F 1336 for pipe stop load support. No cracking or splitting shall occur and pipe spigot shall not protrude into waterway of the fitting. Joining Methods: Chemically Fused Solvent Weld Joints Solvent cement is handled and tested in accordance with ASTM D 2564 and D 2855. The Lap Shear Strength shall equal or exceed 900 psi (6205 kPa) @ 72 hours. Heat Fusion Welded Joints (Butt Fusion Welds) Elastomeric Seals (Gaskets) Must meet all requirements of ASTM F 477 and D 3212. Saddles: Injection Molded saddle tees and saddle wyes shall have skirts with a minimum of 80 square inches (516 square cm) surface area which can be bonded to pipe. Fabricated saddle tees and saddle wyes shall have skirts with a minimum of 160 square inches (1032 square cm) surface area which can be bonded to pipe. The worm drive saddle straps used to fasten the saddles are manufactured with corrosion resistant 300 series AISI stainless steel. GPK does not recommend gasket skirts where air tests are required. Epoxy Reinforced Welds. Threads: Threads shall be American National Standard Taper Pipe Threads (ANSI B1.20.1) which shall be gauged in accordance with ASTM Method D-2122. 3 | P a g e 811 ***WATER*** BI: 60, 61, 62 MCWANE DUCTILE IRON PIPE Boltless restrained joint systems â€¢ Multiple design options available from 3â€â€“36â€ â€¢ Fast and easy installation â€¢ 350 psi pressure rating â€¢ Independently tested mcwaneductile.com SURE STOPÂ® GASKET FOR TYTONÂ® JOINT JOINT DEFLECTION CHART Size In. Rating psi Deflection Degrees 3 350 5 4 350 5 6 350 5 8 350 5 10 350 5 PUSH-ON JOINT PIPE 12 350 5 Maximum Allowable Joint Deflection 14 350 4 Pipe Y-Maximum X Deflection Approximate Radius in ft. of 16 350 4 Size Joint Deflection in Inches Curve Produced by Succession 18 350 4 In. in Degrees 18 ft. Length of Joints 18 ft. Length 20 350 2.5 3 5Â° 19 205 24 350 2.5 4 5Â° 19 205 SURE STOP 350Â® GASKETS are SURE STOP 350Â® GASKETS 6 5Â° 19 205 available in sizes 3 in. â€“ 24 in., and are NSF 61 approved, UL listed, 8 5Â° 19 205 with a rating of 350 psi they will and FM approved. 10 5Â° 19 205 meet or exceed the capabilities of 12 5Â° 19 205 ductile iron pipe, valves, and fittings. FM Rating: 4 in. â€“ 6 in. = 250 psi 18 in. â€“24 in. = 200 psi 14 5Â° 19 205 16 5Â° 19 205 APPLICATION NOTES 18 5Â° 19 205 1. For ductile iron applications utilizing TYTONÂ® pipe, vales, and fittings made to 20 5Â° 19 205 AWWA specifications. 24 5Â° 19 205 2. In cold weather assembly maintain the temperature of the gasket above 40Â° F. 30 5Â° 19 205 3. The socket of the joint should be clean and free of debris or significant corrosion. 36 4Â° 15 260 4. Gasket should be properly seated in the bell socket. 5. Keep the pipe and joint in alignment during assembly. If installed out of alignment, MAXIMUM DEFLECTION FOR FULL LENGTH PIPE the gasket can be pushed out of position, creating the potential for leaks or failure. 6. If deflection is wanted in the joint, deflect before fully inserting the joint. 7. Some extension of the joint will occur when pressurized. To avoid this, the joint should be pulled out after assembly to â€œsetâ€ the stainless steel teeth in the inserted pipe. 8. Once assembled, the joint can be disassembled using steel shims. MECHANICAL JOINT PIPE Maximum Allowable Joint Deflection 9. When cut pipe is used, the following steps are required: Approximate Radius in a. Ensure that the spigot end is properly beveled Pipe Y-Maximum X Deflection ft. of Curve Produced by b. Mark the joint depth on the spigot so it is clear when the joint is fully inserted. Size Joint Deflection in Inches Succession of Joints In. in Degrees 18 ft. Length c. Ensure that the pipe meets the required dimensional tolerances. 18 ft. Length 10. Do not reuse SURE STOP 350Â® GASKETS, as they may have been damaged during 6 7Â°â€“7â€™ 27 145 any previous installation or during removal. 8 5Â°â€“21â€™ 20 195 11. Do not use SURE STOP 350Â® GASKETS to conduct electricity through the pipe 10 5Â°â€“21â€™ 20 195 joint, as they could be damaged and fail. 12 5Â°â€“21â€™ 20 195 Â® 14 3Â°â€“35â€™ 13.5 285 12. Do not use SURE STOP 350 GASKETS in above ground applications. 16 3Â°â€“35â€™ 13.5 285 13. Do not use SURE STOP 350Â® GASKETS with thick coating on the pipe exterior. 18 3Â°â€“0â€™ 11 340 14. If SURE STOP 350Â® GASKETS are used in straight casings, you must pull the pipe 20 3Â°â€“0â€™ 11 340 through the casing. Do not push the pipe. 24 2Â°â€“23â€™ 9 450 TABLE 1: SUITABLE PIPE DIAMETERS FOR FIELD CUTS AND RESTRAINED JOINT FIELD CUT PIPE FIELD FABRICATION When pipe is cut in the field, the cut end may be readily conditioned so that it can be used to Pipe Size Min. Pipe Max. Pipe Min. Pipe Max. Pipe In. Diameter In. Diameter In. Circumference In. Circumference In. make up the next joint. The outside of the cut end should be beveled about 1/4 â€“inch at an 3 3.9 4.02 12-1/4 12-5/8 angle of about 30 degrees (Figure 1). This can be 4 4.74 4.86 14-29/32 15-9/32 quite easily done with a coarse file or a portable 6 6.84 6.96 21-1/2 21-7/8 8 8.99 9.11 28-1/4 28-5/8 grinder. The operation removes any sharp, rough Figure 1 10 11.04 11.16 34-11/16 35-1/16 edges which otherwise might damage the gasket. 12 13.14 13.26 41-9/32 41-21/32 14 15.22 15.35 47-13/16 48-7/32 When ductile iron pipe 14 in. and larger is to be cut in the field, the material should 16 17.32 17.45 54-13/32 54-13/16 be ordered as â€œGAUGED FULL LENGTHâ€. Pipe that is â€œgauged full lengthâ€ is specially 18 19.42 19.55 61 61-13/32 marked to avoid confusion. The ANSI/AWWA standard for ductile iron pipe requires 20 21.52 21.65 67-19/32 68 factory gauging of the spigot end. Accordingly, pipe selected for field cutting should 24 25.72 25.85 80-13/16 81-7/32 also be field gauged in the location of the cut and found to be within the tolerances 30 31.94 32.08 100-11/32 100-25/32 shown in Table 1. In the field, a mechanical joint gland can be used as a gauging device. 36 38.24 38.38 120-1/8 120-9/16 Above Table Based on ANSI/AWWA C151/A21.51 Guidelines for Push-On Joints. THE BACKHOE METHOD OF ASSEMBLY A backhoe may be used to assemble pipe of intermediate and larger sizes. The plain end of the pipe should be carefully guided by hand into the bell of the mcwaneductile.com previously assembled pipe. The bucket of the backhoe may then be used to push the pipe until fully seated. A timber header should be used between the pipe and backhoe bucket to avoid damage to the pipe. TYTONÂ® JOINT PIPE MECHANICAL JOINT PIPE TytonÂ® Joint Pipe Outside Pipe Size *Dimensions In. Thickness In. Diameter In. From To In. A B Pipe Gland** Outside 3 .25 .40 3.96 5.80 3.00 Pipe Thickness *Dimensions In. Bolts Bell Bolts Diameter 4 .25 .41 4.80 7.10 3.15 Size In. Weight Gasket 6 .25 .43 6.90 8.63 3.38 In. Lb. Weight Size Length 8 .25 .45 9.05 10.94 3.69 From To In. B J K1 K2 No. Lb. In. In. 10 .26 .47 11.10 13.32 3.75 3 .25 .40 3.96 2.50 6.19 7.62 7.69 4 5/8 3 11 7 12 .28 .49 13.20 15.06 3.75 14 .28 .51 15.30 17.80 5.00 4 .26 .41 4.80 2.50 7.50 9.06 9.12 4 3/4 3-1/2 16 10 16 .30 .52 17.40 19.98 5.00 6 .25 .43 6.90 2.50 9.50 11.06 11.12 6 3/4 3-1/2 18 16 18 .31 .53 19.50 22.00 5.00 8 .27 .45 9.05 2.50 11.75 13.31 13.37 6 3/4 4 24 25 20 .33 .54 21.60 24.12 5.25 10 .29 .47 11.10 2.50 14.00 15.62 15.62 8 3/4 4 31 30 24 .33 .56 25.80 28.43 5.50 30 .34 .63 32.00 35.40 6.55 12 .31 .49 13.20 2.50 16.25 17.88 17.88 8 3/4 4 37 40 36 .38 .73 38.30 41.84 7.00 14 .33 .51 15.30 3.50 18.75 20.25 20.25 10 3/4 4-1/2 61 45 *Nominal laying length is 18 ft. 16 .34 .52 17.40 3.50 21.00 22.50 22.50 12 3/4 4-1/2 74 55 18 .35 .53 19.50 3.50 23.25 24.75 24.75 12 3/4 4-1/2 85 65 20 .36 .54 21.60 3.50 25.50 27.00 27.00 14 3/4 4-1/2 98 85 24 .38 .56 25.80 3.50 30.00 31.50 31.50 16 3/4 5 123 105 * Nominal laying length is 18 ft. ** Weight shown for regular grey cast iron follower gland, corton bolts and rubber gasket. STANDARD DIMENSIONS AND WEIGHTS OF BALL AND SOCKET JOINT PIPE 3â€ THROUGH 36â€ PUSH-ON JOINT DUCTILE IRON PIPE Pipe Pressure Nominal Wt. of TytonÂ® Joint Size Class Thickness OD* Barrel Wt. Per Avg. Wt. In. Per Ft. Wt. of Lgth.â€ Per Ft.â€¡ In. psi In. Bell Lb. â€ Lb. Lb. Lb. 15Â° Max. T 3 350 0.25 3.96 8.90 7.00 185 9.20 4 350 0.25 4.80 10.90 9.00 225 11.30 A 6 350 0.25 6.90 16.00 11.00 300 16.60 B 8 350 0.25 9.05 21.10 17.00 395 22.00 10 350 0.26 11.10 27.10 24.00 510 28.40 Thickness A B Full Length Weight - Lb.** Safe 12 350 0.28 13.20 34.80 29.00 655 36.40 Pipe End 250 0.28 15.30 40.40 45.00 770 42.90 Size Under Water Class Pipe Retainer As Pull 14 300 0.30 15.30 43.30 45.00 825 45.80 In. T (A21.51) O.D. O.D. Shipped Full of Full of Lb. 350 0.31 15.30 44.70 45.00 850 47.20 Air Water 250 0.30 17.40 49.30 54.00 940 52.30 6 55 .40 6.90 13.88 545 240 465 50,000 16 300 0.32 17.40 52.50 54.00 1000 55.50 8 55 .42 9.05 16.63 770 240 655 70,000 350 0.34 17.40 55.80 54.00 1060 58.80 10 55 .44 11.10 19.13 1005 220 860 95,000 250 0.31 19.50 57.20 59.00 1090 60.50 12 55 .46 13.20 22.00 1270 155 1080 120,000 18 300 0.34 19.50 62.60 59.00 1185 65.90 14 56 .51 15.30 24.50 1655 160 1410 145,000 350 0.36 19.50 66.20 59.00 1250 69.50 16 56 .52 17.40 27.00 1990 45 1685 165,000 250 0.33 21.60 67.50 74.00 1290 71.60 56 .53 2375 -70 2015 20 300 0.36 21.60 73.50 74.00 1395 77.60 18 19.50 30.00 195,000 58* .59 2560 110 2170 350 0.38 21.60 77.50 74.00 1470 81.60 56 .54 2810 -200 2375 200 0.33 25.80 80.80 95.00 1550 86.10 20 21.60 32.75 210,000 59* .63 3110 100 2635 250 0.37 25.80 90.50 95.00 1725 95.80 24 56 .56 3700 -620 3110 300 0.40 25.80 97.70 95.00 1855 103.00 24 25.80 38.25 260,000 62* .74 4415 95 3715 350 0.43 25.80 104.90 95.00 1985 110.20 58 .71 5855 -900 4920 150 0.34 32.00 103.50 139.00 2000 111.20 30 32.00 46.25 335,000 61* .83 6435 -180 5360 200 0.38 32.00 115.50 139.00 2220 123.20 57 .78 8145 -1300 6880 30** 250 0.42 32.00 127.50 139.00 2435 135.20 36 38.30 54.25 400,000 59* .88 8725 -725 7330 300 0.45 32.00 136.50 139.00 2595 144.20 350 0.49 32.00 148.40 139.00 2810 156.10 * Thickness required to overcome buoyancy. 150 0.38 38.30 138.50 184.00 2675 148.70 ** Weights listed are for 18â€™â€“ 0â€ laying lengths. Nominal full lengths vary by size. 200 0.42 38.30 152.90 184.00 2935 163.10 Pipe, Bell, Ball and Retainer are ductile iron. 36** 250 0.47 38.30 170.90 184.00 3260 181.10 Dimensions and weights are subject to manufacturing tolerances. 6 in. â€“ 24 in. pressure rating: 350 psi 300 0.51 38.30 185.30 184.00 3520 195.50 30 in. â€“ 36 in. pressure rating: 250 psi 350 0.56 38.30 203.20 184.00 3840 213.40 â€ Including bell; calculated weight of pipe rounded off to the nearest 5 lb. â€¡ Including bell; average weight per foot, based on calculated weight of pipe before rounding. * Tolerances of OD of spigot end: 3 â€“12 in. = +0.06 in. & -0.06 in. ; 14â€“24 in. = +0.05 in. & -0.08 in. ; 30 â€“ 36 in. = +0.08 in. & -0.06 in. ** FastiteÂ® Joint TR FLEXÂ® RESTRAINED JOINT PIPE THRUST-LOCKâ„¢ BOLTLESS RESTRAINED JOINT PIPE C B A C B A 4â€â€“24â€ Thrust-Lockâ„¢ Boltless Restrained Joint *Pressure Deflection A B C Pipe Size In. Rating Inches Spigot psi Degrees Pipe O.D. Bell O.D. in 18ft Socket C 6 350 4 15 6.90 10.187 5.01 BA 30â€â€“36â€ 8 350 4 15 9.05 13.187 5.57 10 350 4 15 11.10 15.187 5.88 C 12 350 4 15 13.20 17.250 6.13 BA A B C # of 14 350 4 15 15.30 20.625 7.63 *Pressure # of D.I. Max Pipe Rating Locking Rubber Deflection Pullout 16 350 4 15 17.40 22.375 7.88 Size In. PIPE Segments psi In. In. In. Segments Degrees 18 350 4 15 19.50 25.125 8.13 Retainers 20 350 4 15 21.60 27.250 8.38 4 350 4.80 7.25 4.84 2 1 5 0.03 24 350 4 15 25.80 31.562 8.63 6 350 6.90 9.52 5.27 2 1 5 0.04 30 250 2 7 32.00 39.06 10.53 8 350 9.05 11.93 5.82 2 1 5 0.04 *The THRUST-LOCKâ„¢ Restrained Joint has a working pressure rating equivalent to the working 10 350 11.10 14.37 6.03 2 1 5 0.05 pressure rating of the parent pipe with a maximum working pressure rating of 350 psi for 6 in. 12 350 13.20 16.68 6.30 4 2 5 0.06 through 24 in. and 250 psi for 30 in. 14 350 15.30 19.16 7.75 4 2 3-1/4 0.05 NOTE: These deflections are based on joints with nominal dimensions. 16 350 17.40 21.46 7.95 4 2 3-1/4 0.05 18 350 19.50 23.76 8.19 4 2 3 0.05 RATED WORKING PRESSURE AND MAXIMUM DEPTH OF COVER 20 350 21.60 26.04 8.40 4 2 2-1/2 0.05 Laying Conditions 24 350 25.80 30.61 8.86 8 4 2-1/4 0.05 Pipe *Pressure Nominal 30 250 32.00 36.88 10.28 8 4 1-3/4 0.05 Size Rating Thickness Type 1 Type 2 Type 3 Type 4 Type 5 36 250 38.30 43.85 10.87 8 4 1-1/2 0.05 In. psi In. Trench Trench Trench Trench Trench *The TR FLEXÂ® Restrained Joint has a working pressure rating equivalent to the working Maximum depth of cover â€¡â€“ft pressure rating of the parent pipe with a maximum working pressure rating of 350 psi for 4 in. 3 350 0.25 78 88 99 100Â§ 100Â§ through 24 in. and 250 psi for 30 in. through 36 in. 4 350 0.25 53 61 69 85 100Â§ NOTE: These deflections are based on joints with nominal dimensions. 6 350 0.25 26 31 37 47 65 8 350 0.25 16 20 25 34 50 SUPER-LOCKÂ® RESTRAINED JOINT PIPE 10 350 0.26 11** 15 19 28 45 12 350 0.28 10** 15 19 28 44 250 0.28 â€ â€ 11** 15 23 36 TYTONÂ® JOINT PIPE 14 300 0.30 â€ â€ 13 17 26 42 Sizes 6â€â€“24â€ 350 0.31 â€ â€ 14 19 27 44 FASTITEÂ® JOINT PIPE 250 0.30 â€ â€ 11** 15 24 34 30â€ Size 16 300 0.32 â€ â€ 13 17 26 39 350 0.34 â€ â€ 15 20 28 44 250 0.31 â€ â€ 10** 14 22 31 18 300 0.34 â€ â€ 13 17 26 36 350 0.36 â€ â€ 15 19 28 41 B 250 0.33 â€ â€ 10 14 22 30 A 6â€â€“30â€ 20 300 0.36 â€ â€ 13 17 26 35 350 0.38 â€ â€ 15 19 28 38 200 0.33 â€ â€ 8** 12 17 25 Deflection A B 250 0.37 â€ â€ 11 15 20 29 *Pressure 24 Pipe Rating 300 0.40 â€ â€ 13 17 24 32 Size In. Inches Pipe Retainer psi Degrees 350 0.43 â€ â€ 15 19 28 37 in 18ft O.D. O.D. 150 0.34 â€ â€ -- 9 14 22 6 350 4 15 6.90 11.75 200 0.38 â€ â€ 8** 12 16 24 8 350 4 15 9.05 14.38 30 250 0.42 â€ â€ 11 15 19 27 10 350 4 15 11.10 16.75 300 0.45 â€ â€ 12 16 21 29 12 350 4 15 13.20 19.13 350 0.49 â€ â€ 15 19 25 33 14 350 3 11 15.30 21.75 150 0.38 â€ â€ -- 9 14 21 16 350 3 11 17.40 24.00 200 0.42 â€ â€ 8** 12 15 23 18 350 3 11 19.50 26.38 36 250 0.47 â€ â€ 10 14 18 25 20 350 3 11 21.60 28.63 300 0.51 â€ â€ 12 16 20 28 24 350 3 11 25.80 33.75 350 0.56 â€ â€ 15 19 24 32 30 250 3 11 32.00 40.13 â€¡ An allowance for a single H-20 truck with 1.5 impact factor is included for all depths of cover. * In the 14 in. and larger sizes, pressure rating is limited to the rating of the pipe barrel Â§ Calculated maximum depth of cover exceeds 100 ft. (30.5 m). ** Minimum allowable depth of cover is 3 ft. (0.9 m). thickness selected. â€ â€ For pipe 14 in. (350 mm) and larger, consideration should be given to the use of laying Dimensions subject to manufacturing tolerances. conditions other than Type 1. TYTONÂ® AND FASTITEÂ® PUSH-ON JOINTS TR FLEXÂ® RESTRAINED JOINT ASSEMBLY INSTRUCTIONS ASSEMBLY INSTRUCTIONS Step 1. Thoroughly clean out the bell with special attention to the gasket Step 1. (4â€â€“ 10â€) Lay pipe such that one of the bell slots is accessible. recess. Remove any foreign material or excess paint. Clean the spigot (12â€â€“ 20â€) Lay pipe such that both of the bell slots are accessible, in the horizontal or beveled plain end and remove any sharp edges with a standard file. position if possible. (24â€â€“ 36â€) Lay pipe such that all four of the bell slots are accessible, in the diagonal Step 2. After making sure that the correct gasket is being used, insert it into position if possible. the recess in the bell with the small end of the gasket facing the bell face. Step 2. Clean the bell socket and insert gasket. Step 3. Apply lubricant to the inside surface of the gasket, making sure that Step 3. Clean the spigot end to the assembly stripes. the entire surface is coated. Apply a generous coating of lubricant to the beveled portion of the plain end. Step 4. Lubricate the exposed surface of the gasket and pipe spigot end back to the weld bead. Step 4. Guide the plain end into the bell and, while maintaining straight Step 5. Make a normal push-on joint assembly, completely homing the pipe until the first alignment, push the plain end into the bell socket. Once the joint assembly strip is in the bell socket. Keeping the joint in straight alignment during the is assembled, necessary deflection can be accomplished. When assembly process. assembly is complete, the bell face should be aligned between the Step 6. (4â€â€“ 10â€) Insert the right-hand locking segment into a bell slot and slide the segment two white depth rings, for TytonÂ® Joints. FastiteÂ® Joints have only 1 clockwise around the pipe. assembly stripe. (12â€â€“ 36â€) Insert lower locking segment into a bell slot and slide the segment around the MECHANICAL JOINT pipe. ASSEMBLY INSTRUCTIONS Step 7. (4â€â€“ 10â€) Insert left-hand locking segment into the bell slot and slide the segment counter- Step 1. Clean the bell socket and spigot or plain end. Lubricate both the clockwise around the pipe. gasket and plain end by brushing an approved pipe lubricant. (12â€â€“ 36â€) Insert upper locking segment into the same bell slot and rotate around the pipe. Step 2. Place the gland on the plain end with the lip extension toward the Step 8. (4â€â€“ 10â€) Hold the segments apart and wedge the rubber retainer into the slot between plain end. Place the gasket on the plain end with the narrow edge the two locking segments. facing the plain end. (12â€â€“ 36â€) Hold the upper segment in place and wedge the rubber retainer into the slot Step 3. Insert the plain end into the bell and press the gasket into the bell between the two locking segments. recess. Push the gland toward the socket and center it around the Step 9. (4â€â€“ 10â€) None. pipe with the gland lip against the gasket. (12â€â€“ 20â€) Repeat steps 6â€“8 for other slot. Make sure that all 4 locking segments and 2 Step 4. Insert and tighten the bolts. It is important to maintain the same rubber retainers are securely in place. distance between the gland and the bell face at all times. This is best (24â€â€“ 36â€) Repeat steps 6â€“8 for other slot. Make sure that all 8 locking segments and 4 done by alternating side to side and top to bottom, while tightening the rubber retainers are securely in place. bolts. Step 10. Extend the joint to remove the slack in the locking segment cavity. Joint extension is Note: Achieving the recommended bolt torque, particularly with large necessary to attain the marked laying length on the pipe and to minimize growth or diameter pipe, may require repeating the process up to 5 times or extension of the line as it is pressurized. more. Recommended bolt torque ranges are as follows: Step 11. Set the joint deflection as required. Pipe Bolt Nut Across Wrench Torque Range THRUST-LOCKâ„¢ RESTRAINED JOINT Size In. Diameter In. Flats In. Length In. Foot Lbs. ASSEMBLY INSTRUCTIONS 3 5/8 1-1/16 8 45 to 60 Step 1. Ring Installation. Put lock ring on the spigot end of the pipe. Pry the lock ring over the 4â€“24 3/4 1-1/14 10 75 to 90 weldment. Use the hammer to tap the cover. Lock ring installation is complete. Step 2. Clean the Bell and Spigot. Thoroughly clean out the bell with special attention to the NOMINAL THICKNESS FOR STANDARD gasket recess. Remove any foreign material or excess paint. Clean the spigot end and PRESSURE CLASSES OF DUCTILE IRON PIPE remove any sharp edges. Pressure Class* Step 3. Insert the gasket into the recess in the bell with the small end of the gasket facing the bell Outside face. Size Diameter 150 200 250 300 350 In. In. Normal Thickness â€” in. Step 4. Lubricate the Bell and Spigot. Apply lubricant to the inside surface of the gasket. Apply a generous coating of lubricant to the spigot end. 3 3.96 â€” â€” â€” â€” 0.25** 4 4.80 â€” â€” â€” â€” 0.25** Step 5. Insert Pipe. Guide the spigot end into the bell and, while maintaining straight alignment, 6 6.90 â€” â€” â€” â€” 0.25** push the pipe into the bell socket. 8 9.05 â€” â€” â€” â€” 0.25** Step 6. Insert Lock Ring. Push lock ring into the bell. 10 11.10 â€” â€” â€” â€” 0.26 12 13.20 â€” â€” â€” â€” 0.28 Step 7. Rotate the lock ring until the lugs align. Use a hammer to tap the ring if required. Install the 14 15.30 â€” â€” 0.28 0.30 0.31 anti-rotation wedges at 3 and 9 oâ€™clock if the pipe is being used inside of a casing. Deflect 16 17.40 â€” â€” 0.30 0.32 0.34 the joint if desired. 18 19.5 â€” â€” 0.31 0.34 0.36 20 21.60 â€” â€” 0.33 0.36 0.38 SUPER-LOCKÂ® 24 25.80 â€” 0.33 0.37 0.40 0.43 ASSEMBLY INSTRUCTIONS 30 32.00 0.34 0.38 0.42 0.45 0.49 Step 1. Remove hook bolts securing retainer to plain end. Clean plain end of pipe. Clean out any 36 38.30 0.38 0.42 0.47 0.51 0.56 dirt behind retainer lugs. Lubricant should be applied to the beveled nose. * Pressure Classes are defined as NOTE: Per ANSI/AWWA C150/A21.50 Step 2. Assemble the joint in accordance with Clow Assembly Instructions (See Table A on page the rated water pressure of the the thicknesses above include the 13). Make certain that the bell is clean prior to gasket insertion. Be sure that the correct pipe in psi. The thicknesses shown 0.08 in. service allowance and the gasket is used. are adequate for the rated water casting tolerance listed below by size working pressure plus a surge ranges: Step 3. Guide plain end into Super-LockÂ® bell and provide reasonably straight alignment. â€œMakeâ€ allowance of 100 psi. Calculations joint by pushing the plain end into the bell. A jack or come-a-long may also be used to pull are based on a minimum yield the plain end into the bell. Position retainer so that the recesses line up with the lugs on strength of 42,000 and a 2.0 CASTING the bell. Slide retainer over bell and rotate until the lugs on the bell and the retainer line safety factor times the sum of the SIZE TOLERANCES up. working pressure and 100 psi surge (Inches) (Inches) allowance. 3â€“8 -0.05 Step 4. At drilled hole on retainer O.D., insert retainer lock in recess formed by lugs on bell and **Calculated thicknesses for these 10â€“12 -0.06 retainer. Insert roll pin in drilled hole and drive flush with retainer O.D. sizes and pressure ratings are 14â€“36 -0.07 Step 5. Take any necessary deflection after joint is completely assembled. less than those shown above. Presently, these are the lowest Caution: do not over deflect the joint beyond the maximum deflection column specified nominal thicknesses available in on page 2 or subject the joint to bending stress to obtain additional deflection. these sizes. DIMENSIONS AND WEIGHTS FOR SPECIAL CLASSES OF PUSH-ON DUCTILE IRON PIPE LAYING CONDITIONS Pipe Nominal Wt. of TytonÂ® Joint Thickness OD* Size Class Thickness In. Barrel Wt. of Wt. Per Avg. Wt. In. In. Per Ft. â€ Lb. Bell Lb. Lgth.â€ Lb. Per Ft.â€¡ Lb. 3 52 0.28 3.96 9.9 7 185 10.3 3 54 0.34 3.96 11.8 7 220 12.2 3 56 0.40 3.96 13.7 7 255 14.1 4 51 0.26 4.80 11.3 9 210 11.8 4 52 0.29 4.80 12.6 9 235 13.1 4 53 0.32 4.80 13.8 9 255 14.3 4 54 0.35 4.80 15 9 280 15.5 Type 1* Type 2 Type 3 4 56 0.41 4.80 17.3 9 320 17.8 Flat-bottom trench.â€ Loose backfill. Flat-bottom trench.â€ Backfill lightly Pipe bedded in 4 in. (100 mm) consolidated to centerline of pipe. minimum of loose soil.++ Backfill 6 50 0.25 6.90 16 11 300 16.6 lightly consolidated to top of pipe. 6 51 0.28 6.90 17.8 11 330 18.4 6 52 0.31 6.90 19.6 11 365 20.2 6 53 0.34 6.90 21.4 11 395 22.0 * For 14 in. (355-mm) and 6 54 0.37 6.90 23.2 11 430 23.8 larger pipe, consideration 6 55 0.40 6.90 25 11 460 25.6 should be given to the use 6 56 0.43 6.90 26.7 11 490 27.3 of laying conditions other 8 50 0.27 9.05 22.8 17 425 23.7 than Type 1. 8 51 0.30 9.05 25.2 17 470 26.1 8 52 0.33 9.05 27.7 17 515 28.6 â€ â€Flat-bottomâ€ is defined as 8 53 0.36 9.05 30.1 17 560 31.0 undisturbed earth. 8 54 0.39 9.05 32.5 17 600 33.4 Type 4 Type 5 Pipe bedded in sand, gravel, or Pipe bedded in compacted ++ â€Loose soilâ€ or â€œselect 8 55 0.42 9.05 34.8 17 645 35.7 crushed stone to depth of 1/8 pipe granular material to centerline materialâ€ is defined as 8 56 0.45 9.05 37.2 17 685 38.1 diameter, 4 in. (100 mm) minimum. of pipe. Compacted granular native soil excavated from 10 50 0.29 11.10 30.1 24 565 31.4 Backfill compacted to top of or select material++ to top of the trench, free of rocks, 10 51 0.32 11.10 33.2 24 620 34.5 pipe. (Approximately 80 percent pipe. (Approximately 90 percent foreign materials, and 10 52 0.35 11.10 36.2 24 675 37.5 Standard Proctor, AASHTO T-99.) Standard Proctor, AASHTO T-99.) frozen earth. 10 53 0.38 11.10 39.2 24 730 40.5 10 54 0.41 11.10 42.1 24 780 43.4 Notes: 10 55 0.44 11.10 45.1 24 835 46.4 Consideration of the pipe-zone embedment 10 56 0.47 11.10 48 24 890 49.3 conditions included in this figure may be 12 50 0.31 13.20 38.4 29 720 40.0 American Association of State Highway and influenced by factors other than pipe strength. 12 51 0.34 13.20 42 29 785 43.6 For additional information on pipe bedding and Transportation Officials, 444 N. Capitol St. N.W., 12 52 0.37 13.20 45.6 29 850 47.2 backfill, see ANSI/AWWA C600. Suite 225, Washington, DC 20001. 12 53 0.40 13.20 49.2 29 915 50.8 12 54 0.43 13.20 52.8 29 980 54.4 12 55 0.46 13.20 56.3 29 1040 57.9 STANDARDS APPLICABLE TO DUCTILE IRON PIPE AND FITTINGS 12 56 0.49 13.20 59.9 29 1105 61.5 14 50 0.33 15.30 47.5 45 900 50.0 THICKNESS DESIGN OF DUCTILE IRON PIPE ANSI/AWWA C150/A21.50 14 51 0.36 15.30 51.7 45 975 54.2 DUCTILE IRON PIPE FOR WATER AND OTHER LIQUIDS ANSI/AWWA C151/A21.51 14 52 0.39 15.30 55.9 45 1050 58.4 FEDERAL WWP421D, Grade C 14 53 0.42 15.30 60.1 45 1125 62.6 DUCTILE IRON PIPE FOR GRAVITY FLOW SERVICE ANSI/ASTM A746 14 54 0.45 15.30 64.2 45 1200 66.7 DUCTILE IRON FITTINGS FOR WATER AND OTHER LIQUIDS 14 55 0.48 15.30 68.4 45 1275 70.9 3 in. through 36 in. ANSI/AWWA C110/A21.10 14 56 0.51 15.30 72.5 45 1350 75.0 16 50 0.34 17.40 55.8 54 1060 58.8 DUCTILE IRON COMPACT FITTINGS 16 51 0.37 17.40 60.6 54 1145 63.6 3 in. through 24 in. ANSI/AWWA C153/A21.53 16 52 0.40 17.40 65.4 54 1230 68.4 FLANGED FITTINGS ANSI/AWWA C110/A21.10 16 53 0.43 17.40 70.1 54 1315 73.1 ANSI B16.1 16 54 0.46 17.40 74.9 54 1400 77.9 DUCTILE IRON PIPE WITH THREADED FLANGES ANSI/AWWA C115/21.15 16 55 0.49 17.40 79.7 54 1490 82.7 16 56 0.52 17.40 84.4 54 1575 87.4 COATINGS AND LININGS 18 50 0.35 19.50 64.4 59 1220 67.7 Asphaltic ANSI/AWWA C151/A21.51 18 51 0.38 19.50 69.8 59 1315 73.1 ANSI/AWWA C110/A21.10 18 52 0.41 19.50 75.2 59 1415 78.5 ANSI/AWWA C153/A21.53 18 53 0.44 19.50 80.6 59 1510 83.9 Cement Lining ANSI/AWWA C104/A21.4 18 54 0.47 19.50 86 59 1605 89.3 18 55 0.50 19.50 91.3 59 1700 94.6 Various Epoxy Linings and Coatings MANUFACTURERâ€™S STANDARD 18 56 0.53 19.50 96.7 59 1800 100.0 Exterior Polyethylene Encasement ANSI/AWWA C105/A21.5 20 50 0.36 21.60 73.5 74 1395 77.6 JOINTS â€“ PIPE AND FITTINGS 20 51 0.39 21.60 79.5 74 1505 83.6 Push-On and Mechanical Rubber-Gasket Joints ANSI/AWWA C111/A21.11 20 52 0.42 21.60 85.5 74 1615 89.6 FEDERAL WWP421D 20 53 0.45 21.60 91.5 74 1720 95.6 Flanged ANSI/AWWA C115/A21.15 20 54 0.48 21.60 97.5 74 1830 101.6 ANSI B16.1 20 55 0.51 21.60 103.4 74 1935 107.5 20 56 0.54 21.60 109.3 74 2040 113.4 Grooved and Shouldered ANSI/AWWA C606 24 50 0.38 25.80 92.9 95 1765 98.2 PIPE THREADS ANSI B2.1 24 51 0.41 25.80 100.1 95 1895 105.4 INSTALLATION ANSI/AWWA C600 24 52 0.44 25.80 107.3 95 2025 112.6 24 53 0.47 25.80 114.4 95 2155 119.7 24 54 0.50 25.80 121.6 95 2385 126.9 24 55 0.53 25.80 128.8 95 2415 134.1 24 56 0.56 25.80 135.9 95 2540 141.2 30 50 0.39 32.00 118.5 139 2270 126.2 30 51 0.43 32.00 130.5 139 2490 138.2 30 52 0.47 32.00 142.5 139 2705 150.2 30 53 0.51 32.00 154.4 139 2920 162.1 30 54 0.55 32.00 166.3 139 3130 174.0 NEW JERSEY OHIO UTAH CANADA 30 55 0.59 32.00 178.2 139 3345 185.9 183 Sitgreaves St. 2266 S. 6th St. 1401 E 2000 S. 1757 Burlington St. E 30 56 0.63 32.00 190.0 139 3560 197.7 Phillipsburg, NJ 08865 Coshocton, OH 43812 Provo, UT 84603 Hamilton, ON L8N-3R5 36 50 0.43 38.30 156.5 184 3000 166.7 908-454-1161 740-622-6651 801-373-6910 905-547-3251 36 51 0.48 38.30 174.5 184 3325 184.7 mcwaneductile.com mcwaneductile.com mcwaneductile.com canadapipe.com 36 52 0.53 38.30 192.4 184 3645 202.6 36 53 0.58 38.30 210.3 184 3970 220.5 36 54 0.63 38.30 228.1 184 4290 238.3 36 55 0.68 38.30 245.9 184 4610 256.1 NSF 61 ISO 9001 DIPRA 36 56 0.73 38.30 263.7 184 4930 273.9 â€ Including bell; calculated weight of pipe rounded off to the nearest 5 lb. â€¡Including bell; average weight per foot, based on calculated weight of pipe before rounding. *Tolerances of OD of spigot end; 3â€“12 in. Â±0.06 in., 14â€“24 in. +0.05 in., -0.08 in., 30â€“36 in. +0.08 in., -0.06 in. Utility Pipe Fittings and Accessories Compact MJ Fittings ANSI/AWWA C153/A21.53 WATER MAIN A A A T A T A T A A A A A A T T A T A T A MJ x MJ 90Âº MJ x MJ 60Âº MJ x MJ 45Âº MJ x MJ 30Âº MJ x MJ 22 Â½Âº MJ x MJ 11 Â¼Âº MJ x MJ 5 â…Âº MJ x MJ BENDS BENDS (Â¼) BENDS (1/6) BENDS (â…›) BENDS (1/12) BENDS (1/16) BENDS (1/32) BENDS (1/64) NOM. WT WT WT WT WT WT WT T A A A A A A A SIZE (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) 2 0.30 3.25 14 - - 1.80 13 - - 1.00 9 1.00 8 - - 3 0.33 3.50 23 - - 1.50 21 - - 1.00 16 1.00 14 - - 4 0.34 4.00 27 - - 2.00 23 - - 1.50 18 1.25 16 1.25 16 6 0.36 5.00 39 - - 3.00 32 - - 2.00 32 1.50 30 1.50 27 8 0.38 6.50 57 - - 3.50 46 3.00 44 2.50 46 1.75 42 1.75 38 10 0.40 7.50 89 - - 4.50 70 - - 3.00 64 2.00 58 2.00 56 12 0.42 9.00 108 - - 5.50 86 - - 3.50 84 2.25 74 2.25 73 14 0.47 11.50 180 - - 5.00 145 - - 3.75 140 2.50 128 - - 16 0.50 12.50 264 - - 5.50 202 - - 3.75 178 2.50 148 2.50 150 18 0.54 14.00 335 - - 6.00 250 - - 4.50 255 3.00 205 - - 20 0.57 15.00 400 - - 7.00 305 - - 4.50 262 3.00 245 3.00 239 24 0.61 17.00 565 10.50 479 7.50 405 6.00 385 4.50 412 3.00 315 3.00 317 30 0.66 21.50 1005 13.50 843 11.50 798 9.75 692 6.75 665 4.75 568 4.75 568 36 0.74 24.50 1562 17.00 1350 11.50 1164 11.00 1080 7.75 960 5.00 840 5.00 825 42 0.82 29.25 2506 19.00 2150 14.00 1792 12.00 1465 9.00 1350 6.00 1319 6.00 1125 48 0.90 33.25 3045 21.00 2650 15.00 2390 13.25 2075 10.00 1886 6.50 1700 6.50 1600 B B B T B B B B A T A TT A A T A T A A T T MJ x PE 90Âº MJ x PE 60Âº MJ x PE 45Âº MJ x PE 30Âº MJ x PE 22 Â½Âº MJ x PE 11 Â¼Âº MJ x PE 5 5/8Âº MJ x PE BENDS BENDS (Â¼) BENDS (1/6) BENDS (â…›) BENDS (1/12) BENDS (1/16) BENDS (1/32) BENDS (1/64) NOM. WT WT WT WT WT WT WT T A B A B A B A B A B A B A B SIZE (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) (LBS.) 3 0.33 3.50 8.50 16 - - - 1.50 7.00 13 - - - 1.00 6.50 12 1.00 6.50 12 - - - 4 0.34 4.00 9.50 22 - - - 2.00 7.50 19 - - - 1.50 7.00 18 1.25 6.25 17 - - - 6 0.36 5.00 12.00 40 - - - 3.00 8.50 31 - - - 2.00 7.50 29 1.50 7.00 27 - - - 8 0.38 6.50 12.50 61 - - - 3.50 9.00 46 - - - 2.50 8.00 43 1.75 7.25 39 - - - 10 0.40 7.50 13.00 83 - - - 4.50 10.00 68 - - - 3.00 8.50 61 2.00 7.50 52 - - - 12 0.42 9.00 14.50 114 - - - 5.50 11.00 95 - - - 3.50 9.00 81 2.25 7.75 70 - - - 14 0.47 11.50 19.50 197 - - - 5.00 13.00 148 - - - 3.75 11.25 133 2.50 10.50 122 - - - 16 0.50 12.50 20.50 248 - - - 5.50 13.50 184 - - - 3.75 11.75 166 2.50 10.50 148 - - - 18 0.54 14.00 21.00 325 - - - 6.00 13.00 235 - - - 6.00 13.00 235 6.00 13.00 235 - - - 20 0.57 15.00 22.50 390 - - - 7.00 14.00 300 - - - 7.00 14.00 300 7.00 14.00 300 - - - 24 0.61 17.00 25.00 575 - - - 7.50 14.50 390 - - - 7.50 14.50 395 7.50 14.50 400 - - - 30 0.66 22.75 31.75 865 13.50 22.50 846 10.50 19.50 715 9.75 18.75 762 6.75 15.75 600 4.75 13.75 535 4.75 13.75 505 36 0.74 24.50 33.50 1355 - - - 12.00 21.00 1040 - - - 7.75 16.75 865 5.00 14.00 725 - - - 42 0.82 29.25 38.25 2055 - - - 14.00 23.00 1460 - - - 9.00 18.00 1200 6.00 15.00 1030 - - - 48 0.90 33.25 4225 2805 - - - 15.00 24.00 1905 - - - 10.00 19.00 1575 6.50 15.50 1290 - - - UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 4 Utility Pipe Fittings and Accessories Compact MJ Fittings ANSI/AWWA C153/A21.53 T1 J T H H MJ x FE TEES MJ x FE TEES (Conâ€™t) NOM. WT NOM. WT T T1 H J T T1 H J SIZE (LBS.) SIZE (LBS.) 3 x 3 0.33 0.33 3.00 5.50 30 30 x 16 0.66 0.50 12.50 23.00 909 4 x 2 0.52 0.39 4.80 4.80 53 30 x 24 0.66 0.61 16.00 25.00 1290 4 x 3 0.34 0.33 3.50 6.50 34 30 x 30 0.66 0.66 20.00 25.00 1355 4 x 4 0.34 0.34 4.00 6.50 40 36 x 6 0.74 0.36 8.00 26.00 980 6 x 3 0.36 0.33 3.50 8.00 50 36 x 14 0.74 0.47 11.10 26.00 1160 6 x 4 0.36 0.34 4.00 8.00 65 36 x 16 0.74 0.50 12.50 26.00 1241 6 x 6 0.36 0.36 5.00 8.00 62 36 x 20 0.74 0.57 15.00 26.00 1381 8 x 4 0.38 0.34 4.00 9.00 65 42 x 6 0.82 0.36 9.00 30.00 1384 8 x 6 0.38 0.36 5.00 9.00 78 42 x 24 0.82 0.61 20.00 30.00 2130 8 x 8 0.38 0.38 6.50 9.00 88 42 x 42 0.82 0.82 30.00 31.00 3878 10 x 4 0.40 0.34 4.00 11.00 90 48 x 20 0.90 0.57 22.00 34.00 2706 10 x 6 0.40 0.36 5.00 11.00 106 48 x 30 0.90 0.66 23.00 34.00 2872 10 x 8 0.40 0.38 6.50 11.00 114 48 x 48 0.90 0.90 33.50 34.00 4038 10 x 10 0.40 0.40 7.50 11.00 126 12 x 4 0.42 0.34 4.00 12.00 118 L 12 x 6 0.42 0.36 5.00 12.00 133 12 x 8 0.42 0.38 6.50 12.00 134 T1 12 x 10 0.42 0.40 7.50 12.00 145 12 x 12 0.42 0.42 8.75 12.00 170 J 14 x 6 0.47 0.36 6.50 14.00 185 14 x 8 0.47 0.38 7.50 14.00 206 T 14 x 10 0.47 0.40 8.50 14.00 244 H H 14 x 12 0.47 0.42 9.50 14.00 284 14 x 14 0.47 0.47 10.50 14.00 305 MJ x SWIVEL PARALLEL TEE W/ SWIVEL GLAND 16 x 6 0.50 0.36 6.50 15.00 207 NOM. WT T T1 H J L 16 x 8 0.50 0.38 7.50 15.00 260 SIZE (LBS.) 16 x 10 0.50 0.40 8.50 15.00 287 6 x 6 0.36 0.36 8.00 12.50 10.00 83 16 x 12 0.50 0.42 9.50 15.00 312 8 x 6 0.38 0.36 9.00 13.50 11.00 105 16 x 14 0.50 0.47 10.50 15.00 348 10 x 6 0.40 0.36 11.00 14.00 13.00 125 16 x 16 0.50 0.50 11.50 15.00 374 12 x 6 0.42 0.36 12.00 16.00 14.00 235 18 x 6 0.54 0.36 6.50 15.50 325 18 x 8 0.54 0.38 7.50 15.50 351 18 x 12 0.54 0.42 9.50 15.50 358 B B 18 x 18 0.54 0.54 12.50 16.50 445 20 x 4 0.57 0.34 6.50 17.00 321 20 x 6 0.57 0.36 6.50 17.00 360 20 x 8 0.57 0.38 8.00 17.00 339 T1 20 x 10 0.57 0.40 9.00 17.00 370 A T 24 x 6 0.61 0.36 7.00 19.00 432 24 x 8 0.61 0.38 8.00 19.00 472 24 x 12 0.61 0.42 10.00 19.00 542 MJ x MJ TRUE WYES 24 x 16 0.61 0.50 12.00 19.00 622 NOM. WT T T1 A B 24 x 18 0.61 0.54 13.00 22.00 680 SIZE (LBS.) 24 x 24 0.61 0.61 16.00 22.00 950 20 x 20 x 20 0.57 0.57 7.50 15.00 550 30 x 6 0.66 0.36 8.00 23.00 692 24 x 14 x 14 0.61 0.47 9.00 11.50 395 30 x 8 0.66 0.38 8.50 23.00 719 30 x 24 x 24 0.66 0.61 8.00 17.00 815 30 x 10 0.66 0.40 9.50 23.00 764 30 x 30 x30 0.66 0.66 10.00 21.50 1380 30 x 12 0.66 0.42 10.00 23.00 796 (Conâ€™t)ïƒ† UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 7 Utility Pipe Fittings and Accessories Full Body MJ Fittings ANSI/AWWA C110/A21.10 T1 J T H H MJ x MJ TEES MJ x MJ TEES (Conâ€™t) NOM. WT NOM. WT T T1 H J T T1 H J SIZE (LBS.) SIZE (LBS.) 2 x 2 0.39 0.39 3.25 3.25 20 24 x 12 0.89 0.75 15.00 19.00 1030 3 x 2 0.48 0.39 3.50 3.50 43 24 x 14 0.89 0.66 15.00 19.00 1055 3 x 3 0.48 0.48 5.50 5.50 55 24 x 16 0.89 0.70 15.00 19.00 1075 4 x 2 0.52 0.39 4.00 4.00 57 24 x 18 0.89 0.75 22.00 22.00 1400 4 x 3 0.52 0.48 6.50 6.50 75 24 x 20 0.89 0.80 22.00 22.00 1450 4 x 4 0.52 0.52 6.50 6.50 80 24 x 24 0.89 0.89 22.00 22.00 1535 4 x 4 x 6 0.52 0.55 8.00 8.00 115 30 x 6 1.03 0.55 18.00 23.00 1730 6 x 2 0.55 0.39 8.00 8.00 78 30 x 8 1.03 0.60 18.00 23.00 1745 6 x 3 0.55 0.48 8.00 8.00 110 30 x 10 1.03 0.68 18.00 23.00 1760 6 x 4 0.55 0.52 8.00 8.00 115 30 x 12 1.03 0.75 18.00 23.00 1780 6 x 6 0.55 0.55 8.00 8.00 125 30 x 16 1.03 0.70 18.00 23.00 1820 6 x 6 x 8 0.55 0.60 9.00 9.00 185 30 x 18 1.03 0.75 18.00 23.00 1845 8 x 2 0.60 0.39 9.00 9.00 125 30 x 20 1.03 0.80 18.00 23.00 1875 8 x 3 0.60 0.48 9.00 9.00 155 30 x 24 1.03 0.89 25.00 25.00 2400 8 x 4 0.60 0.52 9.00 9.00 165 30 x 30 1.03 1.03 25.00 25.00 2595 8 x 6 0.60 0.55 9.00 9.00 175 36 x 6 1.15 0.55 20.00 26.00 2500 8 x 8 0.60 0.60 9.00 9.00 185 36 x 8 1.15 0.60 20.00 26.00 2520 8 x 8 x 12 0.60 0.75 12.00 12.00 280 36 x 10 1.15 0.68 20.00 26.00 2535 10 x 4 0.68 0.52 11.00 11.00 235 36 x 12 1.15 0.75 20.00 26.00 2550 10 x 6 0.68 0.55 11.00 11.00 250 36 x 14 1.15 0.66 20.00 26.00 2570 10 x 8 0.68 0.60 11.00 11.00 260 36 x 16 1.15 0.70 20.00 26.00 2585 10 x 10 0.80 0.80 11.00 11.00 310 36 x 18 1.15 0.75 20.00 26.00 2610 12 x 4 0.75 0.52 12.00 12.00 315 36 x 20 1.15 0.80 20.00 26.00 2635 12 x 6 0.75 0.55 12.00 12.00 325 36 x 24 1.15 0.89 20.00 26.00 2690 12 x 8 0.75 0.60 12.00 12.00 340 36 x 30 1.15 1.03 28.00 28.00 3545 12 x 10 0.87 0.80 12.00 12.00 390 36 x 36 1.15 1.15 28.00 28.00 3745 12 x 12 0.87 0.87 12.00 12.00 410 42 x 12 1.28 0.75 23.00 30.00 3555 14 x 6 0.66 0.55 14.00 14.00 435 42 x 14 1.28 0.66 23.00 30.00 3575 16 x 4 0.70 0.52 15.00 15.00 525 42 x 16 1.28 0.70 23.00 30.00 3595 16 x 6 0.70 0.55 15.00 15.00 540 42 x 18 1.28 0.75 23.00 30.00 3615 16 x 8 0.70 0.60 15.00 15.00 550 42 x 20 1.28 0.80 23.00 30.00 3640 16 x 10 0.70 0.68 15.00 15.00 570 42 x 24 1.28 0.89 23.00 30.00 3690 16 x 12 0.70 0.75 15.00 15.00 590 42 x 30 1.28 1.03 31.00 31.00 4650 16 x 16 0.70 0.70 15.00 15.00 650 42 x 36 1.78 1.58 31.00 31.00 6075 18 x 6 0.75 0.55 13.00 15.50 590 42 x 42 1.78 1.78 31.00 31.00 6320 18 x 8 0.75 0.60 13.00 15.50 605 48 x 12 1.42 0.75 26.00 34.00 4870 18 x 12 0.75 0.75 13.00 15.50 640 48 x 14 1.42 0.66 26.00 34.00 4885 18 x 18 0.75 0.75 16.50 16.50 820 48 x 16 1.42 0.70 26.00 34.00 4905 20 x 6 0.80 0.55 14.00 17.00 725 48 x 18 1.42 0.75 26.00 34.00 4925 20 x 8 0.80 0.60 14.00 17.00 735 48 x 20 1.42 0.80 26.00 34.00 4950 20 X 10 0.80 0.68 14.00 17.00 755 48 x 24 1.42 0.89 26.00 34.00 4995 20 x 12 0.80 0.75 14.00 17.00 775 48 x 30 1.42 1.03 26.00 34.00 5140 20 x 16 0.80 0.70 18.00 18.00 945 48 x 36 1.42 1.15 34.00 34.00 6280 20 x 20 0.80 0.80 18.00 18.00 1020 48 x 42 1.96 1.78 34.00 34.00 8130 24 x 6 0.89 0.55 15.00 19.00 985 48 x 48 1.96 1.96 34.00 34.00 8420 24 x 8 0.89 0.60 15.00 19.00 1000 48 x 36 x 48 1.42 1.15 34.00 34.00 6275 (Conâ€™t) UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 24 Utility Pipe Fittings and Accessories Full Body MJ Fittings ANSI/AWWA C110/A21.10 L1 L2 T T1 J H S T T MJ x PE x MJ TEES MJ SOLID SLEEVES NOM. WT NOM. SHORT SLEEVES LONG SLEEVES T T1 H J S T SIZE (LBS.) SIZE L1 WT (LBS.) L2 WT (LBS.) 4 x 4 0.52 0.52 6.50 6.50 14.50 75 2 0.39 7.50 12 12.00 18 6 x 6 0.55 0.55 8.00 8.00 16.00 120 3 0.48 7.50 25 12.00 30 8 x 6 0.60 0.55 9.00 9.00 17.00 170 4 0.52 7.50 35 12.00 45 8 x 8 0.60 0.60 9.00 9.00 17.00 180 6 0.55 7.50 45 12.00 65 10 x 10 0.80 0.80 11.00 11.00 19.00 310 8 0.60 7.50 65 12.00 85 12 x 4 0.75 0.52 12.00 12.00 20.00 315 10 0.68 7.50 85 12.00 115 12 x 6 0.75 0.55 12.00 12.00 20.00 325 12 0.75 7.50 110 12.00 145 12 x 8 0.75 0.60 12.00 12.00 20.00 340 14 0.66 9.50 150 15.00 195 12 x 10 0.87 0.80 12.00 12.00 20.00 390 16 0.70 9.50 180 15.00 235 12 x 12 0.87 0.87 12.00 12.00 20.00 410 18 0.75 9.50 215 15.00 285 20 0.80 9.50 240 15.00 325 24 0.89 9.50 320 15.00 425 30 1.03 15.00 635 24.00 885 T T 36 1.15 15.00 855 24.00 1190 42 1.28 15.00 1115 24.00 1550 48 1.42 15.00 1385 24.00 1940 2" - 24" 2" - 24" T T SHORT LONG L L2 30" - 48" 30" - 48" CAPS PLUGS ID ID MJ CAPS & PLUGS (SOLID OR TAPPED) T T NOM. WT (LBS.) T MAX. TAP MJ DUAL PURPOSE SLEEVES W/ OVERSIZE GLANDS SIZE CAPS PLUGS 2 0.39 1 Â½ 5 5 NOM. SHORT LONG PIPE SIZE (I.D.) T 3 0.50 2 12 10 SIZE L1 WT (LBS.) L2 WT (LBS.) 4 0.60 3 15 15 4 4.80 - 5.00 5.10 0.52 7.50 35 12.00 35 6 0.65 4 25 25 6 6.90 - 7.10 7.20 0.55 7.50 45 12.00 65 8 0.70 4 45 45 8 9.05 - 9.30 9.40 0.60 7.50 65 12.00 86 10 0.75 4 60 65 10 11.10 - 11.40 11.50 0.68 7.50 85 12.00 115 12 0.75 4 80 85 12 13.20 - 13.50 13.60 0.75 7.50 110 12.00 145 14 0.82 5 120 115 16 17.40 - 17.80 17.94 0.70 --- --- 15.00 236 16 0.89 6 155 145 18 0.96 6 195 185 20 1.03 6 240 225 24 1.16 6 345 335 30 1.03 6 590 573 36 1.15 6 850 815 42 1.28 6 1180 1110 48 1.42 6 1595 1455 *Threads in Accordance with ANSI/ASME B1.20.1 UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 26 Utility Pipe Fittings and Accessories Flanged Fittings ANSI/AWWA C110/A21.10 T T FE CONCENTRIC & ECCENTRIC REDUCERS (Conâ€™t) T1 NOM. WT T T1 L SIZE (LBS.) 20 x 18 0.80 0.75 20.00 410 24 x 10 0.89 0.68 24.00 450 T1 24 x 12 0.89 0.75 24.00 480 L L 24 x 14 0.89 0.66 24.00 490 24 x 16 0.89 0.70 24.00 525 FE CONCENTRIC & ECCENTRIC REDUCERS 24 x 18 0.89 0.75 24.00 550 24 x 20 0.89 0.80 24.00 590 NOM. WT SIZE T T1 L (LBS.) 30 x 8 1.03 0.60 30.00 700 30 x 12 1.03 0.75 30.00 730 2 x 1 Â½ 0.31 0.31 5.50 10 30 x 14 1.03 0.66 30.00 752 2 Â½ x 2 0.31 0.31 5.50 14 30 x 16 1.03 0.70 30.00 770 3 x 2 0.48 0.31 6.00 16 30 x 18 1.03 0.75 30.00 810 3 x 2 Â½ 0.48 0.31 6.00 21 30 x 20 1.03 0.80 30.00 870 4 x 2 0.52 0.31 7.00 25 30 x 24 1.03 0.89 30.00 970 4 x 2 Â½ 0.52 0.31 7.00 28 36 x 16 1.15 0.70 36.00 1105 4 x 3 0.52 0.48 7.00 30 36 x 20 1.15 0.80 36.00 1230 5 x 2 0.50 0.31 8.00 34 36 x 24 1.15 0.89 36.00 1345 5 x 2 Â½ 0.50 0.31 8.00 35 36 x 30 1.15 1.03 36.00 1555 5 x 3 0.50 0.48 8.00 37 42 x 20 1.28 0.80 42.00 1712 5 x 4 0.50 0.50 8.00 41 42 x 24 1.28 0.89 42.00 1820 6 x 1 Â½ 0.55 0.31 9.00 33 42 x 30 1.28 1.03 42.00 2060 6 x 2 0.55 0.31 9.00 35 42 x 36 1.28 1.15 42.00 2345 6 x 2 Â½ 0.55 0.31 9.00 38 48 x 30 1.42 1.03 48.00 2625 6 x 3 0.55 0.48 9.00 40 48 x 36 1.42 1.15 48.00 2950 6 x 4 0.55 0.52 9.00 45 48 x 42 1.42 1.28 48.00 3320 6 x 5 0.55 0.52 9.00 52 54 x 24 0.90 0.89 32.00 1820 8 x 3 0.60 0.48 11.00 60 54 x 30 0.90 0.61 32.00 1625 8 x 4 0.60 0.52 11.00 65 54 x 36 0.90 0.66 28.00 1680 8 x 5 0.60 0.52 11.00 70 54 x 42 0.90 0.76 25.00 1800 8 x 6 0.60 0.55 11.00 75 54 x 48 0.90 0.80 18.00 1695 10 x 3 0.68 0.48 12.00 81 60 x 54 0.94 0.90 15.00 2055 10 x 4 0.68 0.52 12.00 85 Q V Q 10 x 6 0.68 0.55 12.00 90 10 x 8 0.68 0.60 12.00 110 12 x 4 0.75 0.52 14.00 120 V I I 12 x 5 0.75 0.50 14.00 126 O O 12 x 6 0.75 0.55 14.00 130 3"-10" 12"-54" 12 x 8 0.75 0.60 14.00 145 12 x 10 0.75 0.68 14.00 170 BLIND FLANGES (SOLID OR TAPPED) 14 x 6 0.66 0.55 16.00 155 NOM. WT O Q V I 14 x 8 0.66 0.60 16.00 175 SIZE (LBS.) 14 x 10 0.66 0.68 16.00 190 3 7.50 0.75 0.69 3.00 9 14 x 12 0.66 0.75 16.00 220 4 9.00 0.94 0.88 4.00 16 16 x 6 0.70 0.55 18.00 190 6 11.00 1.00 0.94 6.00 25 16 x 8 0.70 0.60 18.00 210 8 13.50 1.12 1.06 8.00 42 16 x 10 0.70 0.68 18.00 235 10 16.00 1.19 1.12 10.00 63 16 x 12 0.70 0.75 18.00 265 12 19.00 1.25 0.81 12.00 85 16 x 14 0.70 0.66 18.00 280 14 21.00 1.38 0.88 14.00 120 18 x 8 0.75 0.60 19.00 240 16 23.50 1.44 1.00 16.00 145 18 x 10 0.75 0.68 19.00 265 18 25.00 1.56 1.06 18.00 164 18 x 12 0.75 0.75 19.00 295 20 27.50 1.69 1.12 20.00 245 18 x 14 0.75 0.66 19.00 310 24 32.00 1.88 1.25 24.00 318 18 x 16 0.75 0.70 19.00 340 30 38.75 2.12 1.44 30.00 500 20 x 8 0.80 0.60 20.00 290 36 46.00 2.38 1.62 36.00 960 20 x 10 0.80 0.68 20.00 310 42 53.00 2.62 1.81 42.00 1300 20 x 12 0.80 0.75 20.00 345 48 59.50 2.75 2.00 48.00 1740 20 x 14 0.80 0.66 20.00 355 54 66.25 3.00 2.25 54.00 2233 20 x 16 0.80 0.70 20.00 390 60 73.00 3.12 2.38 60.00 2845 (Conâ€™t)ïƒ† 64 80.00 3.38 2.56 64.00 3744 UCAT.15.01 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 49 Joint Restraint Submittal Form StargripÂ® series 3000 Mechanical Joint Wedge Action Restraint for Ductile Iron Pipe Patent #5,772,252 SUBMITTAL INFORMATION PROJECT NAME: ENGINEER: CONTRACTOR: SPEC. SECTION: StargripÂ® series 3000 for Ductile Iron Pipe MEMBER FEATURES & ADVANTAGES â€¢ The Wedge Assembly is designed with a Break-Off Torque Control Nut that will only break off in one direction, ensuring proper installation. â€¢ The StargripÂ® offers a full 5Â° deflection through 12" size, 3Â° on 14"-24", 2Â° on 30"-36" and 1Â° on 42"-48". â€¢ Minimum safety factor of 2:1 â€¢ StargripÂ® sizes 3"-36" are listed with Underwriters Laboratories Inc. and sizes 3"-12" are approved by Factory Mutual Research. â€¢ The Wedge Assembly is designed to fit specific pipe sizes and is field repairable. â€¢ No special tools are required for installation of the StargripÂ®. â€¢ StargripÂ® eliminates tie rods and thrust blocks. â€¢ StargripÂ® may also be used on steel pipe* up to 12" (*transition gasket required on 12" and under). For 14" and larger steel applications, contact Star Pipe. MATERIAL SPECIFICATIONS: â€¢ Gland: Ductile Iron per ASTM A536, Grade 65-45-12 â€¢ Wedges: Ductile Iron per ASTM A536, Grade 65-45-12 heat treated to a minimum of 370 BHN â—† Wedge Finish: Thermally cured fluoropolymer epoxy coating GLAND FINISH OPTIONS (Please check one): HARDWARE OPTIONS (Please check one): Standard: alkyd enamel coating Standard: T-bolts are high strength low alloy steel manufactured in accordance with ANSI/AWWA Optional: StarbondTM TGIC polyester powder coating C111/A21.11-00 applied by an electrostatic spray process Optional: T-bolts and nuts alloy SS 304 per ASTM F593 Optional: Other (specify) _____________________________ Optional: T-bolts and nuts alloy SS 316 per ASTM F593 Optional: T-bolts and nuts Fluoropolymer Star-Blue COUNTRY OF ORIGIN OPTION (Please check one): coated high strength low alloy steel manufactured in accordance with ANSI/AWWA C111/A21.11-00 Import 100% Domestic1 Domestic gland with import components1 (1Please see Domestic Restraint Options Available on our website.) REV.13-1 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 1 Joint Restraint Submittal Form StargripÂ® series 3000 Mechanical Joint Wedge Action Restraint for Ductile Iron Pipe Patent #5,772,252 TECHNICAL INFORMATION 0.75 0.12 STARGRIPÂ® 3000 SPECIFICATIONS* MAX F W/NUTS APPROX NOM. PRESSURE NO. OF NO. OF Please A B C D E F TWISTED G WT. SIZE RATING WEDGES T-BOLTS check sizes: OFF (LBS) (PSI) 3 350 4.84 2.40 4.06 6.19 3/4 9.85 8.78 8.13 2 4 6 4 350 5.92 2.40 4.90 7.50 7/8 11.06 9.62 9.12 2 4 8 6 350 8.02 2.40 7.00 9.50 7/8 13.06 11.72 11.12 3 6 12 8 350 10.17 2.51 9.15 11.75 7/8 15.25 13.84 13.37 4 6 17 10 350 12.22 2.51 11.20 14.00 7/8 17.25 15.88 15.62 6 8 24 12 350 14.32 2.51 13.30 16.25 7/8 19.50 17.98 17.88 8 8 34 14 350 16.40 2.91 15.44 18.75 7/8 21.25 20.12 20.90 10 10 49 16 350 18.50 2.91 17.54 21.00 7/8 23.34 22.22 23.00 12 12 56 18 250 20.60 2.91 19.64 23.25 7/8 26.40 24.90 25.25 12 12 59 20 250 22.70 2.67 21.74 25.50 7/8 28.56 27.00 27.50 14 14 75 24 250 26.90 3.50 25.94 30.00 7/8 33.86 32.34 31.54 16 16 139 30 250 33.29 3.49 32.17 36.88 1-1/8 40.12 38.62 39.12 20 20 199 36 250 39.59 3.49 38.47 43.75 1-1/8 46.42 44.92 46.00 24 24 232 42 250 45.79 5.15 44.75 50.62 1-3/8 54.86 53.32 53.12 28 28 400 48 250 52.09 5.15 51.05 57.50 1-3/8 61.16 59.62 60.00 32 32 488 *All dimensions in inches except where indicated. Notes: â€¢ StargripsÂ® must be adequately wrapped or protected if they are covered by concrete to ensure that concrete does not enter the wedge pocket. â€¢ For applications exceeding the maximum pressure ratings listed, please contact Star Pipe Products for recommendations (see Tandem StargripÂ®). â€¢ For applications on existing pipe, the pipe needs to be structurally sound and the surface needs to be relatively free of any corrosive by-products in order for the wedges to function properly. Please contact Star Pipe Products for technical assistance. â€¢ Sizes 42" & 48" require extra long 1 Â¼" x 8 Â½" T-bolts. REV.13-1 Â® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STARÂ® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www.starpipeproducts.com Page 2 Red Rubber Flange Gaskets UNITED ANSI B16.1 - 125# BRAND Full Face Type Ring Type O.D. B.C. I.D. I.D. O.D. A Bolt A Notes: holes Red Rubber Flange Gaskets: Full Face and Ring Type to fit ANSI B16.1, Class 125 Flanges Reference Standard: ANSI B16.1 - Flange Dimensions - Class 125 Material Standard: Red Rubber - ASTM D1330, Grade II, SBR/Durometer 75+/-5 Shore A/Red Color No. of Nominal Part No. Part No. OD OD Box Qty. Box Qty. ID A BC Bolt Size (Full Face) (Ring) (Full Face) (Ring) (Full Face) (Ring) Holes 1 FFF-025-100 FRG-025-065 1.31 4.25 2.63 1/8 3.12 4 25 25 15-1/4 F0FF-030-11 F6RG-030-08 12.6 40.6 38.0 10/ 34.5 255 2 1-1/2 FFF-040-125 FRG-040-085 1.91 5.00 3.38 1/8 3.62 4 25 25 20F0FF-050-15 F0RG-050-10 20.1 60.0 38.9 15/ 44 5.7 252 2-1/2 FFF-065-175 FRG-065-120 2.60 7.00 4.70 1/8 5.50 4 25 25 38F2FF-080-18 F0RG-080-13 30.1 75.5 58.1 10/ 64.0 255 2 4 FFF-100-210 FRG-100-162 4.10 9.00 6.30 1/8 7.50 8 25 25 50F4FF-125-25 F0RG-125-19 50.1 100.0 78.6 10/ 88 5.5 252 6 FFF-150-275 FRG-150-218 6.10 11.00 8.50 1/8 9.50 8 25 25 80F2FF-200-34 F0RG-200-27 80.1 103.5 180.6 15/ 18 51.7 252 10 FFF-250-400 FRG-250-328 10.10 16.00 12.80 1/8 14.25 12 25 25 152 F8FF-300-47 F0RG-300-37 102.1 159.0 184.7 10/ 127.0 10101 14 FFF-350-525 FRG-350-445 14.20 21.00 17.15 1/8 18.75 12 10 10 186 F0FF-400-58 F0RG-400-51 106.2 203.5 189.9 15/ 261.2 10101 18 FFF-450-625 FRG-450-542 18.20 25.00 21.15 1/8 22.75 16 10 10 280 F6FF-500-68 F0RG-500-60 200.2 207.5 283.6 10/ 205.0 20101 24 FFF-600-800 FRG-600-717 24.20 32.00 27.95 1/8 29.50 20 10 10 350 F-FF-750-98 350.00 3-8.7 10/8 386.0 25 - 36 FFF-900-1165 - 36.00 46.00 - 1/8 42.75 32 5 - 452 F-FF-1000-134 402.00 5-3.0 10/8 469.5 35 - 48 FFF-1200-1510 - 48.00 59.50 - 1/8 56.00 44 5 - Dimensions in inches Napac, Inc. 310 229 Southbridge Street, Worcester, MA 01608 Tel: (800) 807-2215 â€¢ Fax: (800) 807-2214 NOTES: OLYMPIC FOUNDRY INC. 24", 30" 36" VALVE BOX BASE MATL: Cast Iron ASTM A48, CL30 RATING: H-20 PART NO. 940 APPROX WT: 35 Lbs REV: A DATE: 7/16/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 7/16/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 7/16/2003 DWG #: 940 24 BOTTOM SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG NOTES: OLYMPIC FOUNDRY INC. 18" VALVE BOX TOP MATL: Cast Iron ASTM A48, CL30 RATING: H-20 PART NO. 940 APPROX WT: 33 Lbs REV: A DATE: 7/16/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 7/16/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 7/16/2003 DWG #: 940 18 TOP SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG NOTES: Also available with 2" skirt OLYMPIC FOUNDRY INC. VALVE BOX COVER MATL: Cast Iron ASTM A48,CL30 RATING: H-20 PART NO. 940 APPROX WT: 9 Lbs REV: A DATE: 7/21/2003 New border REV A DOCUMENT APPROVED DWN: CL DATE: 7/21/2003 TOLERANCE REV: DATE: XX +- .1 BY: DATE: XXX +- .06 CHKD: CL DATE: 7/21/2003 DWG #: 940 SHALLOW LID SCALE: N/A SHEET: 1 OF 1 XXXX +- .030 < +- 2 DEG CAT NO. PARTS LIST MATERIAL 1 OPERATING NUT BRONZE 2 HOLD DOWN NUT BRONZE 3 WEATHER SEAL "O" RING BUNA-N 4 TOP BONNET D.I. 5 THRUST WASHER DELRIN 6 OPERATING STEM TOP 24 1/4" STEEL 7 HOSE NOZZLE "O" RING ** BUNA-N 8 HOSE NOZZLE ** BRONZE 9 HOSE NOZZLE GASKET ** RUBBER 10 HOSE NOZZLE CAPS ** C.I. 11 PUMPER NOZZLE "O" RING BUNA-N 12 PUMPER NOZZLE GASKET RUBBER 13 PUMPER NOZZLE BRONZE 14 PUMPER NOZZLE CAP C.I. 15 * BRASS COLLAR` BRASS 16 RESERVOIR "O" RING BUNA-N 17 "QUAD" SEAL RING BUNA-N 18 TOP BONNET BOLTS & NUTS ZN. PL. STL. 19 DRIVE-LOC PIN STN. STL. 20 NOZZLE STANDPIPE D.I. 21 SAFETY FLG. BOLTS & NUTS ZN. PL. STL. 22 SWIVEL FLANGES (FRANGIBLE) C.I. 23 STEM COUPLING (FRANGIBLE) GALV. STL. 24 COUPLING PIN & COTTER KEY STN. STL. 25 STANDPIPE LOWER SECTION D.I. 26 OPERATING STEM LOWER STEEL 27 DRIP SHUT OFF BRONZE 28 INSERTS RUBBER 29 VALVE SEAT BRONZE 30 * BRONZE LINER BRONZE 31 VALVE SEAT "O" RING BUNA-N 32 BRASS DRAIN HOLE BUSHING ** BRASS 33 INLET FLANGE "O" RING BUNA-N 34 SEATING VALVE RUBBER RUBBER 35 VALVE WASHER D.I./EPOXY 36 BOTTOM INLET D.I./EPOXY 37 INLET FLG. BOLTS & NUTS ** STN. STL. 38 CHAINS ** ZN. PL. STL. 39 SET SCREW (1/4 - 20 SS CONE PT) ** STN. STL. 40 PIPE PLUG 1/4 NPTF SS HX STN. STL. 41 DUST CAP D.I. 42 DUST CAP BOLT STN. STL. * NOT A REPLACEMENT PART ** NOT SHOWN SUBMITTAL INFORMATION Iron Service Saddles - (FCD202-xxx-TAP style) DUAL BAND EPOXY COATING IRON SERVICE SADDLES FOR USE ON DUCTILE IRON AND A/C PIPE 5" Finish: Epoxy Coating Threads- CC or IP per AWWA C800 Nylatron Coated Stainless Washers Steel Nuts (both sides) EPDM Gasket Closed Lug Stainless Stainless Steel Studs Stainless Steel Bands Steel Washers (open lug side) Nom. Pipe O.D. Approx. Catalog î€³ Submitted Size Range Wt. Lbs. Number Item(s) 2" 2.35 - 2.50 2.8 FCD202-250-TAP * Saddles with this pipe range are not available with 2" CC 2-1/2" 2.75 - 2.90 2.8 FCD202-290-TAP (CC7) or 2-1/2" IP (IP8) threads. *3.46 - 3.80 4.8 FCD202-380-TAP 3" ** These saddles with 1-1/4" through 2-1/2" taps fit the top of *3.80 - 4.25 5.5 FCD202-425-TAP the listed range only. Example FCD202-480-CC7 fits 4.80" **4.26 - 4.80 5.4 FCD202-480-TAP pipe O.D. only. â–²4.74 - 5.00 5.4 FCD202-500-TAP 4" *4.74 - 5.26 5.4 FCD202-526-TAP â–² This saddle is only available with 2" CC (CC7) or â–²4.97 - 5.26 5.4 FCD202-526-TAP 2-1/2" IP (IP8) threads. *4.50 - 5.40 5.4 FCD202-540-TAP 5.94 - 6.69 5.7 FCD202-669-TAP 6.63 - 6.90 5.7 FCD202-690-TAP 6" 6.84 - 7.60 6.7 FCD202-760-TAP 6.63 - 7.61 6.7 FCD202-761-TAP 7.93 - 8.71 6.8 FCD202-871-TAP Outlet Tap Code 8.63 - 9.05 8.2 FCD202-905-TAP 8" 8.99 - 9.79 8.4 FCD202-979-TAP CC (AWWA) Thread 8.63 - 9.80 8.4 FCD202-980-TAP Thread Code Number î€³ Submitted Item(s) 10.00 - 10.75 9.4 FCD202-1075-TAP 3/4" CC CC3 10.75 - 11.10 9.0 FCD202-1110-TAP 1" CC CC4 10" 11.10 - 12.12 10.8 FCD202-1212-TAP 1-1/4" CC âˆ† CC5 10.64 - 12.13 10.8 FCD202-1213-TAP 1-1/2" CC CC6 12.00 - 12.75 11.0 FCD202-1275-TAP 2" CC CC7 12.75 - 13.20 9.0 FCD202-1320-TAP 12" IP Thread 13.20 - 14.38 12.8 FCD202-1438-TAP Thread Code Number î€³ Submitted Item(s) 12.62 - 14.39 12.8 FCD202-1439-TAP 15.30 - 16.25 11.9 FCD202-1625-TAP 3/4" IP IP3 14" 16.30 - 17.25 12.9 FCD202-1725-TAP 1" IP IP4 17.40 - 18.40 13.1 FCD202-1840-TAP 1-1/4" IP âˆ† IP5 16" 18.50 - 19.25 12.3 FCD202-1925-TAP 1-1/2" IP IP6 18" 19.50 - 20.50 13.1 FCD202-2050-TAP 2" IP IP7 21.20 - 22.20 13.2 FCD202-2220-TAP 20" 2-1/2" IP IP8 22.50 - 23.50 13.3 FCD202-2350-TAP 23.80 - 24.80 13.4 FCD202-2480-TAP âˆ† Contact factory for availability 24" 25.60 - 26.50 13.9 FCD202-2650-TAP 30" 31.74 - 32.74 14.8 FCD202-3274-TAP FEATURES â€¢ Body made of high strength ductile iron per ASTM A536 â€¢ Each dual band and 5/8" UNC threaded studs are 18-8 type 304 stainless steel. For saddles 3" or smaller, studs are 1/2" â€¢ Gasket is EPDM rubber per ASTM D2000 â€¢ Finish on saddle body is fusion-bonded epoxy coating â€¢ UL Classified to ANSI/NSF Standard 61 The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 01/22/18 SUBMITTAL INFORMATION Ballcorp Corporation Stops - (FB1000-xx-Q-NL style) AWWA/CC TAPER THREAD INLET BY QUICK JOINT FOR COPPER OR PLASTIC TUBING (CTS) OUTLET External Nut Stop EPDM O-ring Solid one piece tee-head and stem Molded EPDM rubber seat with reinforcing ring supports the ball Dual EPDM O-rings in the stem Body Outlet Threads AWWA/CC Threads Quick Joint Nut Stainless Steel Gripper Inlet Outlet Molded Spring Tip Gasket provides Hydraulic Seal Length External Nut Stop Fluorocarbon-coated brass ball Image shown above is an FB1000-4-Q-NL V I O V B O A. P âœ“ S S S S L T W. L N I() 3/4" 3/4" 3/4" 4-19/64" 3/4" Flare Copper 1.6 FB1000-3-Q-NL 1" 1" 1" 4-31/64" 1" Flare Copper 2.6 FB1000-4-Q-NL 1" 1" 1-1/4" 4-5/16" 1-1/4" Special Thread 3.4 FB1000-45-Q-NL 1-1/4" 1-1/4" 1-1/4" 5-21/32" 1-1/4" Special Thread 4.3 FB1000-5-Q-NL 1-1/2" 1-1/2" 1-1/2" 5-45/64" 1-1/2" Special Thread 5.4 FB1000-6-Q-NL 2" 2" 2" 7-1/16" 2" Special Thread 8.2 FB1000-7-Q-NL Note: Ford recommends using insert stiffeners with plastic pipe or tubing. FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identification â€¢ Certified to NSF/ANSI Standard 61 and NSF/ANSI Standard 372 where applicable â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Ends are integral or secured with adhesive to prevent unintentional disassembly â€¢ 300 PSI working pressure The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 08/23/18 SUBMITTAL INFORMATION Quick Joint Coupling - (C84-xx-Q-NL style) MALE IRON PIPE THREAD BY QUICK JOINT FOR COPPER OR PLASTIC TUBING (CTS) Male Iron Pipe Threads External Nut Stop Molded Spring Tip Stainless Steel Gripper Quick Joint Nut Gasket Provides Hydraulic Seal Iron Pipe Size Quick Joint Size Length D A. P 3 S L M I P Q.J. CTS W. L N I() 1/2" 1/2" 2" 0.5 C84-11-Q-NL 3/4" 1/2" 2-7/32" 0.5 C84-31-Q-NL 3/4" 5/8" 2-1/4" 0.6 C84-32-Q-NL 3/4" 3/4" 2-1/4" 0.6 C84-33-Q-NL 3/4" 1" 2-3/8" 0.7 C84-34-Q-NL 1" 3/4" 2-19/32" 0.7 C84-43-Q-NL 1" 1" 2-9/16" 0.8 C84-44-Q-NL 1" 1-1/4" 2-15/32" 1.3 C84-45-Q-NL 1" 1-1/2" 2-9/16" 1.5 C84-46-Q-NL 1-1/4" 1-1/4" 2-5/8" 1.4 C84-55-Q-NL 1-1/2" 1-1/2" 3" 1.8 C84-66-Q-NL 2" 2" 3-1/4" 2.3 C84-77-Q-NL Note: Ford recommends insert stiffeners when using plastic pipe or tubing. FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identification â€¢ Certified to NSF/ANSI Standard 61 and NSF/ANSI Standard 372 where applicable â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Body design provides octagonal wrench flats for proper installation The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 06/26/19 SUBMITTAL INFORMATION Quick Joint Coupling - (C14-xx-Q-NL style) FEMALE IRON PIPE THREAD BY QUICK JOINT FOR COPPER OR PLASTIC TUBING (CTS) Iron Pipe Threads External Nut Stop Quick Joint Nut Stainless Steel Gripper for Axial Restraint FIP Size Quick Joint Size Length Molded Spring Tip Gasket Provides Hydraulic Seal D A. P 3 S L F I P Q.J. CTS W. L N I() 1/2" 1/2" 1-9/16 0.4 C14-11-Q-NL 3/4" 3/4" 1-1/4" 0.6 C14-33-Q-NL 3/4" 1" 1-3/4" 0.9 C14-34-Q-NL 1" 3/4" 1-3/4" 0.7 C14-43-Q-NL 1" 1" 2-1/8" 0.9 C14-44-Q-NL 1-1/4" 1-1/4" 2-3/16" 1.5 PJA4-45-C14-55-Q-NL 1-1/2" 1-1/2" 2-7/16" 2.3 C14-66-Q-NL 2" 2" 2-5/8" 2.8 C14-77-Q-NL Note: Ford recommends insert stiffeners when using plastic pipe or tubing FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identification â€¢ Certified to NSF/ANSI Standard 61 and NSF/ANSI Standard 372 where applicable â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Sleeve design provides hexagonal wrench flats for proper installation The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 09/06/18 SUBMITTAL INFORMATION 80 Series Coppersetter - (VBH87-xxB-11-77-NL style) FLANGED ANGLE BALL VALVE BY FLANGED ANGLE CHECK VALVE WITH BY-PASS (2" METER) FEMALE IRON PIPE THREAD VERTICAL INLET AND OUTLET 17" Meter Spacing Flanged Angle Flanged Angle Ball Valve Check Valve Meter Support Bracket Height Copper Tube By-Pass Ball Valve 2-1/8" 1-1/8" FIP Inlet FIP Outlet SERVICE LINE CONNECTION A. C 3S H FIP I FIP O W. L. N I() 12" 32.0 VBH87-12B-11-77-NL 15" 33.0 VBH87-15B-11-77-NL 18" 34.0 VBH87-18B-11-77-NL 2" 2" 21" 36.0 VBH87-21B-11-77-NL 24" 37.0 VBH87-24B-11-77-NL 27" 39.0 VBH87-27B-11-77-NL FEATURES â€¢ All brass that comes in contact with potable water conforms to AWWA Standard C800 (ASTM B584, UNS C89833) â€¢ The product has the letters â€œNLâ€ cast into the main body for lead-free identiï¬ cation â€¢ Brass components that do not come in contact with potable water conform to AWWA Standard C800 (ASTM B62 and ASTM B584, UNS C83600, 85-5-5-5) â€¢ Constructed with Type K copper conforms to ASTM B88, UNS C12200 â€¢ All Ford Meter Setters are assembled with lead-free solder â€¢ Meter support brackets are standard â€¢ Padlock wing is standard on all angle meter ball valves or key valves â€¢ Drop-in rubber gaskets are included with all meter flanges â€¢ Optional High By-pass. Add "HB" following the height. Example: VBH87-12HB-11-77-NL The Ford Meter Box Company considers the information in this submittal form to be correct at the time of publication. Item and option availability, including specifications, are subject to change without notice. Please verify that your product information is current. The Ford Meter Box Company, Inc. Submitted By: P.O. Box 443, Wabash, Indiana U.S.A. 46992-0443 Phone: 260-563-3171 / Fax: 800-826-3487 Overseas Fax: 260-563-0167 www.fordmeterbox.com 06/26/17 ADS, Inc. Drainage Handbook Specifications â™¦ 1-1 ________________________________________________________________________________________________ ADS POTABLE WATER SERVICE PIPE (IPS) PIPE SPECIFICATIONS Scope This specification describes ADS Potable Water Service Pipe (IPS) pipe SIDR 19, SIDR 15, SIDR 11.5, SIDR 9, and SIDR 7 for use in potable water service applications. Pipe Requirements ADS potable water service pipe shall meet the requirements of ASTM D2239, AWWA C901 and NSF Standards 14 and 61. Pipe dimensions shall meet Iron Pipe Size (IPS) standards. Material Properties Pipe material shall be high-density polyethylene conforming to the minimum requirements of cell classification 445574C as defined and described in ASTM D3350, except that carbon black content should not exceed 3.0%. The resin shall have a material designation code of PE4710 by the Plastic Pipe Institute. Disinfection/Maintenance The active chlorine content of disinfecting solutions shall not exceed 12%. All disinfecting solution must be flushed from all lines within the system. Industry accepted procedures, like ANSI/AWWA C651 Disinfecting Water Mains, should be followed for both new and repaired potable water lines. Installation Installation is similar to other flexible pipe products. Methods including direct bury, plowing or pulling are applicable per local, state or federal guidelines for the application. Pipe Properties 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" Inside Diameter 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.060 +0.02 0.060 +0.02 0.060 +0.02 0.073 +0.02 0.085 +0.02 0.109 +0.020 9 in (mm) (1.5 +0.51) (1.5 +0.51) (1.5 +0.51) (1.9 +0.51) (2.2 +0.51) (2.8 +0.51) Pressure Rating 100 100 100 100 100 100 SIDR 1 @ 730F psi (kPa) (689) (689) (689) (689) (689) (689) Weight gm/ft 28 Â±2 38 Â±2 47 Â±2 80 Â±3 96 Â±3 190 Â±5 (gm/m) (92 Â±7) (125 Â±7) (154 Â±7) (262 Â±10) (315 Â±10) (623 Â±16) Inside Diameter 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.060 +0.02 0.060 +0.02 0.070 +0.02 0.092 +0.02 0.107 +0.02 0.138 +0.020 in (mm) (1.5 +0.51) (1.5 +0.51) (1.8 +0.51) (2.3 +0.51) (2.7 +0.51) (3.5 +0.51) Pressure Rating 125 125 125 125 125 125 SIDR 15@ 730F psi (kPa) (862) (862) (862) (862) (862) (862) Weight gm/ft 30 Â±2 39 Â±2 56 Â±2 97 Â±3 129 Â±3 200 Â±5 (gm/m) (98 Â±7) (128 Â±7) (184 Â±7) (318 Â±10) (423 Â±10) (656 Â±16) Inside Diameter 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 in (mm) 15.8 Â±0.25 20.9 Â±0.381 26.6 Â±0.51 35.1 Â±0.51 40.9 Â±0.51 52.5 Â±0.51 Wall Thickness 0.060 +0.02 0.072 +0.02 0.091 +0.02 0.120 +0.02 0.140 +0.02 0.180 +0.020 in (mm) (1.5 +0.51) (1.8 +0.51) (2.3 +0.51) (3.0 +0.51) (3.6 +0.51) (4.6 +0.51) Pressure Rating 160 160 160 160 160 160 SIDR 11.5@ 730F psi (kPa) (1103) (1103) (1103) (1103) (1103) (1103) Weight gm/ft 30 Â±2 50 Â±2 72 Â±2 125 Â±3 146 Â±3 248 Â±5 (gm/m) (98 Â±7) (164 Â±7) (236 Â±7) (410 Â±10) (479 Â±10) (814 Â±16) ï›™ ADS, Inc., January 2015 ADS, Inc. Drainage Handbook Specifications â™¦ 1-2 ________________________________________________________________________________________________ Pipe Properties (continued) Inside 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 Â±0.02 Diameter in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.069 +0.02 0.092 +0.02 0.117 +0.02 0.153 +0.02 0.179 +0.02 0.230 +0.028 in (mm) (1.8 +0.51) (2.3 +0.51) (3.0 +0.51) (3.9 +0.51) (4.5 +0.51) (5.8 +0.71) SIDR 9Pressure 200 200 200 200 200 200 Rating @ 730F psi (kPa) (1379) (1379) (1379) (1379) (1379) (1379) Weight gm/ft 32 Â±2 53 Â±2 88 Â±3 155 Â±3 185 Â±5 330 Â±5 (gm/m) (105 Â±7) (174 Â±7) (289 Â±10) (509 Â±10) (607 Â±16) (1083 Â±16) Inside 0.622 Â±0.01 0.824 Â±0.015 1.049 Â±0.02 1.380 Â±0.02 1.610 Â±0.02 2.067 +0.02 Diameter in (mm) (15.8 Â±0.25) (20.9 Â±0.38) (26.6 Â±0.51) (35.1 Â±0.51) (40.9 Â±0.51) (52.5 Â±0.51) Wall Thickness 0.089 +0.02 0.118 +0.02 0.150 +0.02 0.197 +0.02 0.230 +0.03 0.295 +0.035 in (mm) (2.3 +0.51) (3.0 +0.51) (3.8 +0.51) (5.0 +0.51) (5.8 +0.71) (7.5 +0.89) SIDR 7Pressure 250 250 250 250 250 250 Rating @ 730F psi (kPa) (1724) (1724) (1724) (1724) (1724) (1724) Weight gm/ft 38 Â±2 71 Â±2 116 Â±3 210 Â±5 227 Â±5 440 Â±8 (gm/m) (125 Â±7) (233 Â±7) (381 Â±10) (689 Â±16) (745 Â±16) (1443 Â±26) * Additional SIDRs may be available. Contact an ADS Representative for regional availability. ï›™ ADS, Inc., January 2015 1324 BCF 1324 CARSONÂ® Heavywall in 14 in in 1 2 1 2 6 23 1 6 in 12â€ BODY 2 Material: HDPE Model: 13â€ x 24â€ Weight: 17 lbs Wall Type: Straight Mouseholes: 0-4 Performance: ANSI/SCTE-77 Tier 8, WUC 3.6, 12â€ ASTM C857 A-8, Exceeds 20,000 lb minimum load failure in 81 4 in 173 4 in in 213 4 18â€ BODY 1 4 12 Material: HDPE Model: 13â€ x 24â€ Weight: 23 lbs Wall Type: Straight Mouseholes: 0-4 DIM1E3N2SI4ONS AT BOTTOM OF BOX ARE THE SAME FOR 12" AND 18" DEPTHS Performance: ANSI/SCTE-77 Tier 8, WUC 3.6, in 4 in in ASTM C857 A-8, Exceeds 20,000 1 2 1 61 2 23 1 lb minimum load failure 6 in 2 LOAD RATING / NOTES MEDIUM DUTY ANSI/SCTE TIER 15 For use in non-vehicular traffic situations only. 18â€ Weights and dimensions may vary slightly. Actual load rating is determined by the box and cover combination. in 81 4 Cover comes standard with permanent in 173 4 markings for manufacturer, load rating, model in in 213 4 size and manufacturing location. 1 4 12 DIMENSIONS AT BOTTOM OF BOX ARE THE SAME FOR 12" AND 18" DEPTHS oldcastleinfrastructure.com (800) 735-5566 1324 BCF CARSONÂ® Heavywall COVER OPTIONS Heavy Duty Plastic, Flush Solid Heavy Duty Plastic, Flush with Plastic Reader Door Heavy Duty Plastic, Flush with Cast Iron Reader Door HD Plastic HD Plastic Heavy Duty Plastic, Flush with AMR Recess Flush Solid AMR Recess Heavy Duty Plastic, Flush with AMR Bracket Polymer, Flush Solid Polymer, Flush with Cast Iron Reader Door Composite, Flush Solid Ductile Iron, Flush Solid Ductile Iron, with Max View Reader Door Polymer Composite Flush Solid AMR Recess 17X30 DUCTILE IRON COVER WITH Ductile Iron MAX VIEW READER DOOR AND 2" AMR Max View Door HOLE ADD ON OPTIONS Touch Read Hole AMR Bracket WARNING: Cancer - www.P65Warnings.ca.gov All information contained on this sheet is current at the time of publication. Revision 11/30/18 Oldcastle reserves the right to discontinue or update product information without notice. Â© 2018 Oldcastle Infrastructure (800) 735-5566 oldcastleinfrastructure.com (800) 735-5566 Centennial Park Apartments Centennial Trail ROW, Curb Replacement 67th Ave NE and Street Frontage Work Traffic Control Plan 67th Ave NE Sidewalk Closed Cross Here (R9-11a) NORTH October 5th - November 20th 2020 7am to 5pm Bike and Pedestrian This traffic control plan extends into the Sidewalk Closed Detour (M4-9a) Cross Here Centennial Trail. The Centennial Trail will be (R9-11a) diverted to the opposite side of the street at the crosswalk already in place at the intersection of Highland View Dr and 67th Ave NE. Bike and Pedestrian Detour (M4-9a) State of Washington Department of Fish and Wildlife 16018 Mill Creek Boulevard â€¢ Mill Creek, Washington 98012 â€¢ (425) 775-1311 FAX (425) 338-1066 27 January 2020 City of Arlington Department of Community & Economic Development Attn: Marc Hayes, Director Nova Heaton, Development Services Manager 238 N Olympic Avenue Arlington, WA 98223 RE: Centennial Parkâ€”Edgecomb Creek Tributary Channel Habitat Dear Mr. Hayes and Ms. Heaton, The Washington Department of Fish and Wildlife (WDFW) appreciates the opportunity to submit comments on projects that may impact species and habitats throughout Washington State. WDFW submits the following comments regarding the proposed Edgecomb Creek Project. WDFW has determined that the relic channel of Edgecomb Creek is a jurisdictional water of the state and has habitat and function supportive of fish life. In 2017, WDFW permitted a project by the Washington Department of Transportation (WSDOT) to relocate approximately 330 feet of Edgecomb Creek to the south of SR 531 in order to increase habitat quality and prevent the need for multiple stream crossings under SR 531. The upper Edgecomb Creek crossing (WDFW Site ID 991059) was considered a fish passage barrier due to the slope of the channel and velocity of the water the crossing created during expected salmon migration times. The lower Edgecomb Creek crossing (Site ID 991058) was considered a barrier only due to the velocity of the water the crossing created during expected migration times. Both crossings fell under the Federal Supreme Court decision (Click for link) requiring the State of Washington to remove or correct fish passage barriers, and were considered high priority due to the amount and quality of upstream habitat made available by their removal or correction. Project proponents chose to plug the upper culvert (991059) and reconstruct the channel on the south side of SR531, thereby reducing velocities through the lower culvert (991058) to the point that it no longer created a barrier to fish migration. Spawning ground surveys performed by WDFW documented significant coho salmon and lamprey spawning in the newly created portion of Edgecomb Creek as well as the relic channel of Edgecomb Creek before, during, and after project completion. Further observations documented juvenile coho use of the relic channel during high flow events in the mainstem of Edgecomb Creek and demonstrates the importance of refugia habitat which was part of the design and intent of the WSDOT project. Additionally, the relic channel was left in place to convey natural flow and stormwater from a small stream connected to a wetland upslope. The entire system up to, and including the wetland, has potential fish use for winter steelhead, chum salmon, cutthroat trout, and resident trout as it meets the physical criteria for fish use of having a scour-line width of more than 2 feet and less than 16% slope (For an explanation of how WDFW assesses this see: WDFW Publication 00061). WDFW appreciates the opportunity to provide comment and the difficulties in determining fish presence and jurisdiction associated with the proposed project. The determination of jurisdictional waters of the state is consistent with WAC 220-660- 030(153) and fish habitat as defined in WAC 220-660-030(51). The presence of natural flowing waters of the state and the presence of fish life in these waters has been well documented. WDFW looks forward to working with project proponents to ensure their work avoids impacts to fish life and habitat. Sincerely, Bob Warinner Acting Region 4 Habitat Program Manager CC: Kirk Lakey â€“ Assistant Regional Habitat Program Manager Jamie Bails â€“ Habitat Biologist Cade Roler â€“ Fish and Wildlife Biologist Bob Penhale â€“ Department of Ecology Derek Marks â€“ Tulalip Tribes â€“ Timber Fish & Wildlife Manager FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 ADDRESS: 67th Avenue NE and 172nd Street NE, Arlington, WA REPORT #: FD017 PERMIT #: DATE: 10/23/2019 CLIENT: Williams Investments PAGE #: 1 of 4 CONTRACTOR: Exxel Pacific INSPECTOR: Tristan Coragiulo Compaction Of: Retaining Wall Leveling Pads Field Data: Depth/ DT/ Wet Field Dry Compaction Test Location Elev BS Density Moisture Density Lab % Pass/ # (ft) (in) (pcf) (%) (pcf) # Attained Required Fail 1 See Image 1 FG DT/4 143.1 7.4 133.2 1 95 95 P 2 See Image 1 FG DT/4 143.6 7.6 133.5 1 95 95 P Lab Max. Dry Optimum Retained Sample Soil Type Source Density Moisture On #4 Test # (pcf) (%) (%) Method 1-4774A WGG w/ Silt & Sand Granite - Mandan Pit (D-217) 140.4 6.7 56 ASTM D1557/D4718 2- 0.0 None 3- 0.0 None Gauge Make/Model/Serial#: Instro/3500/2082 M/D Standard Count: 405/3125 Comments: Please see page 2 for comments. COPIES: chumphrey@safebuilt.com, dough@dykeman.net, jaredu@cgengineering.com, jgalusha@cgengineering.com, Reviewed by josht@tayexinc.com, justint@tayexinc.com, kolander@arlingtonwa.gov, lpeterson@arlingtonwa.gov, MattT@exxelpaci fic.com, michaels@dykeman.net, ryan@williamsinvest.com ...and 2 more. This report shall not be reproduced except in full, without the written approval of GeoTest Services, Inc. The above test results relate only to the sample (or location) tested. FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: FD017 CONTRACTOR: Exxel Pacific PAGE #: 2 of 4 GeoTest was on site as requested to provide in-place density testing at the above locations (Image 1). All locations and elevations are approximate and were provided by the contractor. Upon our arrival, the contractor had constructed most of retaining wall 2 for the trash enclosure (Image 2). GeoTest was not on site for the construction of its leveling pad. Permeable ballast, non-woven geosynthetic fabric, and native backfill had been placed behind the wall as specified in the approved civil plans (Image 3). Retaining wall backfill had not yet been compacted and reportedly will be at a future date. The contractor also placed and compacted a 6" crushed aggregate leveling pad with a plate compactor and jumping jack for retaining wall 1 (Image 4). Some retaining wall blocks were placed within the northernmost section of wall 1 upon our arrival. All tests south of those blocks met compaction requirements, with the leveling pad exhibiting dense and unyielding conditions. GeoTest will return for further compaction and retaining wall construction inspection. Image 1. Approximate in-place density testing and retaining wall construction locations. FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: FD017 CONTRACTOR: Exxel Pacific PAGE #: 3 of 4 Image 2. Wall 2 construction status upon our arrival (looking southeast). Image 3. Wall 2 permeable ballast, non-woven geosynthetic fabric, and uncompacted native backfill (looking south). FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: FD017 CONTRACTOR: Exxel Pacific PAGE #: 4 of 4 Image 4. Wall 1 compaction efforts on leveling pad crushed aggregate (looking northeast). FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 ADDRESS: 67th Avenue NE and 172nd Street NE, Arlington, WA REPORT #: FD018 PERMIT #: DATE: 10/25/2019 CLIENT: Williams Investments PAGE #: 1 of 3 CONTRACTOR: Exxel Pacific INSPECTOR: Tristan Coragiulo Compaction Of: Retaining Wall Leveling Pads and Backfill Field Data: Depth/ DT/ Wet Field Dry Compaction Test Location Elev BS Density Moisture Density Lab % Pass/ # (ft) (in) (pcf) (%) (pcf) # Attained Required Fail 1 See Image 1 FG1 DT/4 145.8 6.3 137.1 1 98 95 P 2 See Image 1 FG2 DT/12 127.2 12.3 113.2 2 95 95 P 3 See Image 1 FG2 DT/12 128.4 10.9 115.8 2 97 95 P Lab Max. Dry Optimum Retained Sample Soil Type Source Density Moisture On #4 Test # (pcf) (%) (%) Method 1-4744A WGG w/ Silt & Sand Granite - Mandan Pit (D-217) 140.4 6.7 66 ASTM D1557/D4718 2-4755A PGS w/ Silt Native 119.1 11.4 14 ASTM D1557/D4718 3- 0.0 None Gauge Make/Model/Serial#: Instro/3500/3052 M/D Standard Count: 423/3101 Comments: Please see page 2 for comments. COPIES: chumphrey@safebuilt.com, dough@dykeman.net, jaredu@cgengineering.com, jgalusha@cgengineering.com, Reviewed by josht@tayexinc.com, justint@tayexinc.com, kolander@arlingtonwa.gov, lpeterson@arlingtonwa.gov, MattT@exxelpaci fic.com, michaels@dykeman.net, ryan@williamsinvest.com ...and 2 more. This report shall not be reproduced except in full, without the written approval of GeoTest Services, Inc. The above test results relate only to the sample (or location) tested. FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: FD018 CONTRACTOR: Exxel Pacific PAGE #: 2 of 3 FG1 - Finished leveling pad grade for wall 1 FG2 - Finished grade at the top of wall 2 GeoTest was on site as requested to provide in-place density testing at the above locations (Image 1). All locations and elevations are approximate and were provided by the contractor. Upon our arrival, the contractor had constructed most of retaining wall 2 for the trash enclosure. GeoTest was not on site for the construction of its leveling pad. Permeable ballast, non-woven geosynthetic fabric, and native backfill had been placed behind the wall as specified in the approved civil plans (Image 2). Native structural fill behind the wall was placed and compacted with an excavator mounted HO-PAC. The contractor also placed and compacted a 6" crushed aggregate leveling pad with a plate compactor, jumping jack, and HO-PAC for retaining wall 1. All tests on crushed aggregate met compaction requirements, with the leveling pad exhibiting firm and unyielding conditions. GeoTest tested less dense and sandy samples behind wall 2 in which sample 4755A was taken for laboratory testing (Image 3). GeoTest will return for further compaction and retaining wall construction inspection. Image 1. Approximate in-place density testing locations. FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: FD018 CONTRACTOR: Exxel Pacific PAGE #: 3 of 3 Image 2. Retaining wall 2 compacted backfill and retaining wall 1 leveling pad compaction (looking northwest). Image 3. Native structural fill in which sample 4755A taken east of wall 2 (looking east). FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 ADDRESS: 67th Avenue NE and 172nd Street NE, Arlington, WA REPORT #: FD019 PERMIT #: DATE: 10/29/2019 CLIENT: Williams Investments PAGE #: 1 of 3 CONTRACTOR: Exxel Pacific INSPECTOR: Suzie Miller Compaction Of: Retaining Wall Leveling Pad and Rock Wall Subgrade Field Data: Depth/ DT/ Wet Field Dry Compaction Test Location Elev BS Density Moisture Density Lab % Pass/ # (ft) (in) (pcf) (%) (pcf) # Attained Required Fail 1 Wall 1, Station 3+25 FG DT/4 149.0 11.8 137.2 1 98 95 P Lab Max. Dry Optimum Retained Sample Soil Type Source Density Moisture On #4 Test # (pcf) (%) (%) Method 1-4744A WGG w/Silt and Sand Granite - Mandan Pit (D-217) 140.4 6.7 66 ASTM D1557/D4718 2- 0.0 None 3- 0.0 None Gauge Make/Model/Serial#: Troxler/3440P/62856 M/D Standard Count: 635/2248 Comments: See Page 2 for comments. COPIES: chumphrey@safebuilt.com, dough@dykeman.net, jaredu@cgengineering.com, jgalusha@cgengineering.com, Reviewed by josht@tayexinc.com, justint@tayexinc.com, kolander@arlingtonwa.gov, lpeterson@arlingtonwa.gov, MattT@exxelpaci fic.com, michaels@dykeman.net, ryan@williamsinvest.com ...and 2 more. This report shall not be reproduced except in full, without the written approval of GeoTest Services, Inc. The above test results relate only to the sample (or location) tested. FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: FD019 CONTRACTOR: Exxel Pacific PAGE #: 2 of 3 FG - Finished Grade GeoTest was onsite, as requested to provide in-place density testing of Wall 1 leveling pad and observe the subgrade of the rockery wall onsite. Wall 1 Leveling Pad Prior to GeoTest's arrival, the contractor had placed and compacted a portion of Wall 1's leveling pad. All tests met compaction requirements. Rockery Wall Subgrade Upon GeoTestâ€™s arrival on site, the contractor was cutting the native material to the subgrade of the proposed rock stack wall. GeoTest observed that a section of the wall subgrade (see Image 1) on the south side of the wall appeared to be oversaturated and not suitable for supporting the proposed wall. After discussions with GeoTestâ€™s geotechnical engineer, GeoTest made the following recommendations to the general and earthwork contractors: 1) Overexcavate the wall subgrade to firm and unyielding soils (approximately 12 to 18â€ +/-); 2) Cover the subgrade with fabric; 3) Restore the over-excavation to final grades with compacted 1.25â€ size crushed rock, and 4) Keep water away from the excavation as much as possible. These recommendations were relayed to the general and earthwork contractors both via email and verbally while we were on site. GeoTest observed that the over-excavation was restored with 2â€ sized crushed rock; however, it is our opinion that this substitution is acceptable. Based on our observations, it appears that the wall subgrade over-excavation and backfill were performed in an acceptable manner based on our recommendations. Image 1 - Approximate location of unsuitable subgrade. (provided by the contractor.) FIELD DENSITY/MOISTURE REPORT Nuclear Gauge * ASTM D6938 PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: FD019 CONTRACTOR: Exxel Pacific PAGE #: 3 of 3 Image 2 - Unsuitable wall subgrade. Image 3 - Excavated and backfilled section of the wall subgrade. Soil Observation Report PROJECT: Centennial Park JOB #: 19-0659 ADDRESS: 67th Avenue NE and 172nd Street NE, Arlington, WA REPORT #: SO005 PERMIT #: DATE: 10/31/2019 CLIENT: Williams Investments PAGE #: 1 of 2 CONTRACTOR: Exxel Pacific INSPECTOR: Tristan Coragiulo OBSERVATION OF: Northern Rockery Wall Construction GeoTest was on site as requested to provide retaining wall inspection services as requested. Upon our arrival, the contractor had continued constructing the northern rockery wall of the site, working adjacent to the wetland (Image 1). Construction of the wall appeared to be in conformance with detail 1/RTW3.0. The crushed aggregate leveling pad was compacted to firm and unyielding condition with a perforated pipe placed behind it prior to vertical wall construction. 4 and 3 man rockery boulders were then placed with sufficient batter as well as a layer of ballast stockpiled against the wall. It is our understanding that the contractor plans on backfilling and compacting 12" of fill in front of the wall to achieve the minimum 12" of required base embedment. Geosynthetic fabric will also be placed behind the ballast prior to borrow backfill placement. The contractor did not need in-place density tests on soils during this site visit. GeoTest will return for further inspection as requested. COPIES: chumphrey@safebuilt.com, dough@dykeman.net, jaredu@cgengineering.com, jgalusha@cgengineering.com, Reviewed by josht@tayexinc.com, justint@tayexinc.com, kolander@arlingtonwa.gov, lpeterson@arlingtonwa.gov, MattT@exxelpaci fic.com, michaels@dykeman.net, ryan@williamsinvest.com ...and 2 more. This report shall not be reproduced except in full, without the written approval of GeoTest Services, Inc. GeoTest's representatives are on-site to observe, test and provide recommendations. The Contractor retains sole responsibility for the methods, operations and sequences of construction, including obtaining approval from the design authority and owner prior to proceeding with any change in the work scope and/or any associated costs. Soil Observation Report PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: SO005 CONTRACTOR: Exxel Pacific PAGE #: 2 of 2 Image 1. Northern rockery construction progress (looking east). Soil Observation Report PROJECT: Centennial Park JOB #: 19-0659 ADDRESS: 67th Avenue NE and 172nd Street NE, Arlington, WA REPORT #: SO006 PERMIT #: DATE: 11/7/2019 CLIENT: Williams Investments PAGE #: 1 of 2 CONTRACTOR: Exxel Pacific INSPECTOR: Gerry Bautista Jr. OBSERVATION OF: Wall Construction, Continuing Earthwork Activities Weather: Partly Cloudy, 50's GeoTest Services, Inc. (GeoTest) was on site to observe progress on continuing earthwork activities for the Centennial project. GeoTest met with Matt Tilton (Exxel Pacific) on site upon arrival. While on site, GeoTest observed the following information. - The eastern portion of the StoneTerra wall is nearly completed. The southern return portion of this wall has yet to be constructed, but GeoTest understands that this should be taking place in the following days. - Rockeries along the western and northern portions of the property appear to be complete. - Exxel Pacific will be sending building pad settlement monitoring results to GeoTest for review. - GeoTest understands that the utility and building permits should be finalized by the end of November. Utility installation will likely start in December, per Exxel Pacific. GeoTest will return to the site as requested for further earthwork observation and testing. COPIES: chumphrey@safebuilt.com, dough@dykeman.net, jaredu@cgengineering.com, jgalusha@cgengineering.com, Reviewed by josht@tayexinc.com, justint@tayexinc.com, kolander@arlingtonwa.gov, lpeterson@arlingtonwa.gov, MattT@exxelpaci fic.com, michaels@dykeman.net, ryan@williamsinvest.com ...and 2 more. This report shall not be reproduced except in full, without the written approval of GeoTest Services, Inc. GeoTest's representatives are on-site to observe, test and provide recommendations. The Contractor retains sole responsibility for the methods, operations and sequences of construction, including obtaining approval from the design authority and owner prior to proceeding with any change in the work scope and/or any associated costs. Soil Observation Report PROJECT: Centennial Park JOB #: 19-0659 CLIENT: Williams Investments REPORT #: SO006 CONTRACTOR: Exxel Pacific PAGE #: 2 of 2 The south half of the eastern StoneTerra wall. The south return portion of the wall yet to be constructed (right side of photo). The northern rockery is adjacent to the wetland. Sieve Analysis Test Report - ASTM C136/C117 2 in. 1Â½ in. 1 in. Â¾ in. Â½ in. 3/8 in. #4 #10 #20 #30 #40 #60 #100 #140 #200 100 90 80 70 60 50 40 PERCENT FINER 30 20 10 0 10 1 0.1 GRAIN SIZE - in. % Gravel % Sand % Fines % +3" Coarse Fine Coarse Medium Fine Silt 0 3 11 8 22 48 8 SIEVE PERCENT SPEC.* PASS? Material Description SIZE FINER PERCENT (X=NO) Structural Fill 2" 100 poorly graded sand with silt 1" 99 3/4" 97 Atterberg Limits 1/2" 94 PL= LL= PI= 3/8" 92 #4 86 Coefficients #10 78 D90= 7.3101 D85= 4.0994 D60= 0.4886 #20 70 D50= 0.3687 D30= 0.2339 D15= 0.1397 #40 56 D10= 0.0933 Cu= 5.24 Cc= 1.20 #60 33 Classification #100 16 USCS= AASHTO= #200 8.5 Remarks Geotechnical Engineer reviewed and material is generally suitable for re-use pending compaction testing. * (no specification provided) Location: Native Material - Eastern Perimeter of Site - Sampled from Cut Slope Sample Number: 4755A Date: 10-25-2019 Client: Williams Investments Project: Centennial Park 67th Avenue NE and 172nd Street NW This report may not be reproduced, except in full, without the prior written approval of GeoTest Services, Inc.Project No: 19-0659 Figure SP006 Tested By: JC Checked By: BF Moisture-Density (Proctor) Test Report 120 11.4%, 119.1 pcf 119 118 Dry density, pcf 117 12.3%, 116.3 pcf 116 ZAV for Sp.G. = 2.55 115 6 7.5 9 10.5 12 13.5 15 Water content, % - Rock Corrected - Uncorrected Test specification: ASTM D 1557-12 Method B Modified ASTM D4718-15 Oversize Corr. Applied to Each Test Point Elev/ Classification Nat. % > % < Sp.G. LL PI Depth USCS AASHTO Moist. 3/8 in. No.200 2.65 8 8.5 ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION Structural Fill Maximum dry density = 119.1 pcf 116.3 pcf poorly graded sand with silt Optimum moisture = 11.4 % 12.3 % Project No. 19-0659 Client: Williams Investments Remarks: Project: Centennial Park SPG: Assumed 67th Avenue NE and 172nd Street NW Date: 10-25- Loc.: Native Material - Eastern Perimeter of Site - Sampled from Cut Slope This report may not be reproduced, except in full, without the prior written approval of GeoTest Services, Inc.Figure SP006 Tested By: AH Checked By: BF Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/3/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s order, nonessential construction is to shut down. The construction site is closed. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/6/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s order, nonessential construction is to shut down. The construction site is closed. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/7/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s order, nonessential construction is to shut down. The construction site is closed. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/8/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s order, nonessential construction is to shut down. The construction site is closed. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/9/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s order, nonessential construction is to shut down. The construction site is closed. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/10/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s order, nonessential construction is to shut down. The construction site is closed. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/13/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s order, nonessential construction is to shut down. The construction site is closed. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/14/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Electric Vault Yes Yes The contractor is proceeding with utility work that is being coordinated with PUD. The contractor will set their vault, make the connection, then backfill the vault as essential construction. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, the work to connect the utility vault is considered essential work. Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/15/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Electric Vault Yes Yes The contractor is proceeding with utility work that is being coordinated with PUD. The contractor will set their vault, make the connection, then backfill the vault as essential construction. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, the work to connect the utility vault is considered essential work. Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/16/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, all nonessential construction is to shut down. The site is currently shut down. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/17/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, all nonessential construction is to shut down. The site is currently shut down. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/20/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, all nonessential construction is to shut down. The site is currently shut down. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/21/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A See inspector notes TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, all nonessential construction is to shut down. The site is currently shut down. Electricians were on site looking at the vault today. They are checking on the condition of the hole to see what is needed to prepare the space for a concrete pour. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/22/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Electric Vault Yes Yes Crews are placing conduit for the electric vault. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, the contractor considers the installation of the electric vault to be essential construction. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/23/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, all nonessential construction is to shut down. The site is currently shut down. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/24/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, all nonessential construction is to shut down. The site is currently shut down. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/27/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? N/A TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Per the governorâ€™s COVID-19 order, all nonessential construction is to shut down. The site is currently shut down. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 4/28/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Grading Yes N/A Crews are grading in preparation of utility work. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS Crews are social distancing on site. COVID-19 protective measures are in place. I spoke with the foreman today and he informed me of the new protocols for being on-ste. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 5/6/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Electrical N/A N/A Electrical building work. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜ - Yes â˜’ - No â˜ - N/A EROSION CONTROL ISSUE NOTES Trackout There is quite a bit of trackout on 67th. There was a heavy rain this morning and all of the construction site are pretty muddy. I spoke with the foreman who informed me that they had someone coming out to get the trail and roadway cleaned up. INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 5/8/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Grading Yes N/A Crews are grading in preparation of utility work. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A Crews have cleaned up 67th from the trackout observed on my previous site visit. INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 5/11/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Grading Yes N/A Crews are grading in preparation of building foundation work. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 5/12/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Grading Yes N/A Crews are grading in preparation of building foundation work. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 5/18/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Grading Yes N/A Crews are grading in preparation of building foundation work. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/1/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Waterline Connection Yes Yes Crews are tapping the water main on 67th. Public Works in on site to inspect materials. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Lane closure Yes Crews set up a lane shift/closure to shut down the 67th northbound lane. Northbound traffic was shifted to the center lane. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/9/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Drains Yes Yes Crews are installing footing and rood drains. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/17/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Building work only. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A See photos under the Work Performed section. INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/23/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Footing Drains TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/29/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work Yes Yes Footing Drains were installed and inspected TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/2/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Drainage Yes Yes Crews are installing footing and roof drains. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/14/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Drainage Yes Yes Building A Footing Drains TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/15/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Building work only. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/23/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Retaining Wall Yes Yes Crews continue with retaining wall construction. Crews are stripping forms on the south side of the wall and installing reinforcing steel on the north. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/27/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Crews continue installing the retaining wall on the east side of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/28/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Drainage Yes Yes Crews continue installing infiltration trenches in the center of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/31/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Infiltration Trenches Yes Yes Crews continue installing infiltration trenches in the center of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/3/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Crews continue with retaining wall construction along the east edge of the development. Drainage Yes Yes Crews continue installing infiltration trenches in the center of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/4/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Drainage Yes Yes Crews continue installing infiltration trenches in the center of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/5/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Drainage Yes Yes Crews continue installing infiltration trenches in the center of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/7/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Crews continue with retaining wall construction along the east edge of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/10/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Crews continue with retaining wall construction along the east edge of the development. Building work N/A N/A Crews are excavating in preparation of installing the foundation for the center building. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/26/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Crews have completed backfilling the retaining wall on the east side of the development and have begun foot excavation on top of the wall. Drainage Yes Yes Crew are completing perimeter drainage connections. Grading Yes N/A Crews have spread out the stockpiled material excavated to install the infiltration trenches in the center of the development and the retaining wall on the east side of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/27/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only today. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A Crews are keeping the driving lanes watered to control dust. INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 8/27/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only today. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A Crews are keeping the driving lanes watered to control dust. INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 9/11/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only today. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 9/16/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only today. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 9/21/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only today. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 9/22/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only today. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 10/21/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews are demolishing the existing path and prep TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 10/22/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews continue preparing to construct the 10â€™ wide section of the centennial trail. Building work N/A N/A Crews continue with building work. I signed off on the Building F and I foundation drains. The drains had already been backfilled. The foreman had photos of the construction stored in the contractorâ€™s documentation program TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 10/28/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Footing/Roof Drains Yes Yes Crews are installing the footing and roof drains for Building. Crews still need to wrap in fabric and backfill with drain rock. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Page 2 Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 3 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 10/30/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜ - Yes â˜’ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work Yes Yes Building work only. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS I received a call from the development services manager about the path in front of the development. The plans show 10â€™ wide path, but a 12â€™ wide path is required in this section. I informed the contractor that a change will be required. I met with the foreman in the field and laid out a new alignment for the path which will require the planter strip to be reduced to 4â€™ wide. Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/3/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Footing Drains Yes Yes Crews have begun installing footing and roof drains for Building I. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/5/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Footing Drains Yes Yes Crews have begun installing footing and roof drains for Building I. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/6/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Footing Drains Yes Yes Crews are backfilling footing and roof drains for Building I. Pavement Removal Yes N/A Crews are cutting HMA and concrete pavement in preparation of the development driveways, existing drainage removal, and other frontage improvements. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. Lane Shift Yes Crews have a lane shift to close the northern lane of 67th for HMA and concrete pavement cutting. TEMPORARY EROSION & SEDIMENT CNTROL Page 2 Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 3 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/12/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews are installing the bases for light standards along the centennial trail. Einforcing steel has been set. The foreman informed me that they would have CL4000 concrete for the bases tomorrow, TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/16/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews are forming concrete stairs to the buildings along 67th, the northern driveway into the development, and the concrete trail. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/17/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews continue forming concrete frontage improvements along 67th, the northern driveway into the development, and the concrete trail. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/19/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews continue forming concrete frontage improvements along 67th. Crews have placed concrete for the radii of the northern driveway into the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/25/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews continue forming concrete frontage improvements along 67th. Crews are placing concrete for the stairs to the commercial units. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 11/30/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews are prepping walkways that tie into the trail along 67th. Building work N/A N/A Building work continues. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 12/2/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews are forming the 12â€™ trail along 67th. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 12/4/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews are placing concrete for the 12â€™ trail along 67th. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 12/7/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews have continued placing centennial trail concrete. Crews are also setting forms for sidewalks around the building. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 12/15/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews continue forming driveways, trail, and sidewalk sections along the front of the development along 67th. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 12/17/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews resume setting forms for sidewalks. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 12/29/2020 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews continue with concrete sidewalk installation. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 1/4/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only. No civil to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 1/7/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Frontage Improvements Yes Yes Crews are placing landscaping and irrigation in the planter strip between 67th and the Centennial Trail. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. Lane Shift Yes Crews have set up a lane shift on the northbound 67th in order to remove and replace HMA at the southern driveway. See the photos in the Construction section of this report. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 1/13/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building work N/A N/A Building work only. No civil work to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜’ - Yes â˜ - No Is the contractor maintaining the traffic control devices? â˜’ - Yes â˜ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? Trail Detour Yes Crews have the centennial trail closed and a detour that shifts bike traffic to the west side of 67th. Lane Shift Yes Crews have set up a lane shift on the northbound 67th in order to remove and replace HMA at the southern driveway. See the photos in the Construction section of this report. TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 2/10/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Landscaping Yes Yes Crews are installing landscaping features for the first phase of buildings (A&B). TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜’ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 2/25/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Walkways Yes N/A Crews are setting up forms for the development walkways for the buildings along 67th Ave. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜’ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 3/2/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Walkways Yes N/A Crews are placing concrete for the development walkways for the buildings along 67th Ave. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜’ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 3/8/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Walkways Yes N/A Crews are preparing subgrade for building walkways. Landscaping Yes Yes Crews are installing landscaping for the buildings along 67th. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜’ - No â˜ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜ - N/A EROSION CONTROL ISSUE NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 3/12/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Concrete Sidewalk Yes Yes Crews are installing the concrete walkways around the buildings in the center of the development. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜EROSION CONTROL ISSUE - N/A NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/16/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Building work only. Status Update N/A N/A Crews have paved a majority of the parking lot/driving area HMA. The drive areas of the eastern edge of the parking lot have not been paved. See the photos below. Most of the building concrete sidewalks have been constructed. Building drainage has also all be tight lined into the development drainage systems. Kevin Olander inspected that work while I was out. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜EROSION CONTROL ISSUE - N/A NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/21/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Building Work N/A N/A Building work only. No civil work to report. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜EROSION CONTROL ISSUE - N/A NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 6/29/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Sidewalks Yes N/A Crews are setting forms for the center building walkways. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜EROSION CONTROL ISSUE - N/A NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/8/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Sidewalks Yes N/A Crews continue constructing the walkways for the courtyard of the center cluster of apartments. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜EROSION CONTROL ISSUE - N/A NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 7/9/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Sidewalks Yes N/A Crews continue constructing the walkways for the courtyard of the center cluster of apartments. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜EROSION CONTROL ISSUE - N/A NOTES N/A INSPECTOR COMMENTS None Page 2 Department of Community & Economic Development CIVIL INSPECTION DAILY REPORT PROJECT INFORMATION REPORT DATE PROJECT NAME PREPARED BY 9/15/2021 Centennial Park Brian Grieve WORK PERFORMED Was work performed today? â˜’ - Yes â˜ - No TYPE OF WORK PERFORMED APPROVED APPROVED NOTES PLANS? MATERIALS? Wetland Inspection Yes Yes Crews have completed their planting and cleanup of the wetland along the north border of the property. Invasive plants have been removed and construction debris cleaned up. TEMPORARY TRAFFIC CONTROL Was Temporary Traffic Control required? â˜ - Yes â˜’ - No Is the contractor maintaining the traffic control devices? â˜ - Yes â˜ - No â˜’ - N/A CLOSURE TYPE APPROVED NOTES PLAN? N/A TEMPORARY EROSION & SEDIMENT CNTROL Are the contractorâ€™s erosion control measures in place? â˜’ - Yes â˜ - No Is the contractor maintaining erosion control BMPs? â˜’ - Yes â˜ - No â˜EROSION CONTROL ISSUE - N/A NOTES N/A INSPECTOR COMMENTS None City of Arlington 18204 59th Avenue NE Arlington, WA 98223 Re: Centennial Park 17231 67th Ave NE, Arlington, WA 98223 Subject: Street Lighting Review â€“ Response Date: January 28, 2020 This letter is a follow up response to the street lighting review, to be installed at the above referenced project frontage, along Centennial Trail. Responses to the following comments: 1) Shift the lights to directly between the trees; provide an updated photometric analysis to ensure we still have adequate lighting. a. Response: In effort to match existing Centennial Trail lighting, light fixtures and photometrics remained unchanged. See updated landscaping layout, pg. 14/17 - trees have been revised by eccosDesign, Landscape Architect, to accommodate lighting levels and spacing. 2) The proposed trees appear to be Zelkova serrata â€œGreenvaseâ€. Confirm size at maturity does not interfere will illumination. a. Response: See attached email from eccosDesign, pgs. 15-16, for species description and potential size of trees at maturity. 3) It looks like the acorn foundations are right up against the back of curb in the planter strip. These should be closer to the sidewalk as their main purpose is to provide illumination there. The foundation top elevation should be the same as the elevation of the trail. a. Response: Landscape/photometrics plans do not reflect actual locations of light foundation placement. Unless otherwise noted, foundations will be shifted to be set tight to the trail. Sincerely, Jose Tapia Project Engineer Exxel Pacific, Inc. SUBMITTAL SHEET Page 1 Your Logo Here Exxel Pacific, Inc. 323 Telegraph Road Bellingham 98226 360-734-2872 Job: Centennial Park Spec Section Num: N/A Submittal: 260000-02 Revision: Package No: Package Revision: Date Submitted: 12/12/19 Response Required: 12/17/19 Submittal Title: Street Lighting - Centennial Trail Submittal Detail: Product data and model selection with Light Layout Contractor: Contractorâ€™s Stamp Project:Centennial Park Exxel Pacific Reviewed By: Matt Tilton Date Submitted: 9/18/19 Submittal #: 260000-02 âœ˜ Reviewed Revise & Resubmit Make Corrections Noted Rejected This submittal/shop drawing has been reviewed by Exxel Pacific for general conformance with design concept only and does not relieve this subcontractor or supplier of the responsibility for conformance with the Contract Documents, all of which have priority over this submittal. Subcontractor/Supplier is responsible for all dimensions and fabrication to be confirmed at the jobsite. Design Team Architect/Engineer Stamp Dykeman Architects ARCHITECTâ€™S REVIEW IS FOR CONFORMANCE WITH INFORMATION GIVEN AND DESIGN CONCEPT EXPRESSED IN THE CONTRACT CG Engineering DOCUMENTS. NOTATIONS ON THE SUBMITTAL DO NOT RELIEVE THE CONTRACTOR FROM COMPLIANCE WITH CONTRACT DOCUMENT REQUIREMENTS NOR AUTHORIZE CHANGES TO THE CONTRACT SUM AND TIME. THE CONTRACTOR IS RESPONSIBLE FOR: DETERMINING QUANTITIES AND DIMENSIONS; SELECTING CONSTRUCTION METHODS AND PROCEDURES; COORDINATING WITH OTHERâ€™S WORK; SUITABLE PERFORMANCE OF MATERIALS AND ASSEMBLIES AND PERFORMING WORK IN A SAFE MANNER. NO EXCEPTIONS TAKEN REVIEWED NOTE MARKINGS RETURNED FOR CORRECTION RESUBMIT BY: Doug Hofius DATE: 12/30/2019 1716 WEST MARINE VIEW DRIVE EVERETT, WA 98201 PHONE: (425) 259-3161 Note potential conflicts with street trees. (also required by City of Arlington) Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Date: Dec 2, 2019 Phone: (206) 575-6865 Fax: Job Name City of Arlington St Lighting SEATAC-WWA19-81534 Arlington WA Bid Date Nov 5, 2019 Submittal Date Nov 26, 2019 Distributor: Platt Electric Supply - Bellingham 1825 Ellis St. Bellingham WA 98225 Date: Dec 2, 2019 Page 1/1 Transmittal Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Phone: (206) 575-6865 From: Mike Card Project City of Arlington St Lighting Quote# SEATAC-WWA19-81534 Location Arlington WA Contact: ATTACHED WE ARE SENDING YOU 1 COPY OF THE FOLLOWING ITEM: X Drawings Specifications Other: Prints Information Plans X Submittals THESE ARE TRANSMITTED FOR: Prior Approval Resubmittal for Approval Record X Approval Corrections Bids due on: Approval as Submitted Your Use Other: Approval as Noted Review and Comment Type MFG Part KING LUMINAIRE (WWA) K199R-B3AR-V-40W(SSL)-1036- 120:277V-K13-3K-BK LED Post Top Luminaire Leotek GCM2-40H-MV-WW-2R-BK-850-FFA SOUTH COAST LIGHTING & DESIG BCHUN2436/900A350 W/ GFI RECEPTACLE 35' DECO POLE W/ 6' DECO ARM @ 38' MH, BANNER ARMS, AND TWIN PLANTER BRACKETS SOUTH COAST LIGHTING & DESIG BCHUN2032/590A140 16' MH DECO POLE W/ BANNER ARMS, AND TWIN PLANTER BRACKETS Sea Tac c/o Portland Bolt 1" X 36" X 4" F1554GR55 ANCHOR BOLT ASSY Sea Tac c/o Portland Bolt 3/4" X 24" X 3" F1554GR36 ANCHOR BOLT ASSY FF00009 www.seataclighting.com Page 1/1 Submitted by Sea-Tac Lighting & Controls, LLC (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Notes: 120:277V-K13-3K-BKK199R-B3AR-V-40W(SSL)-1036-Catalog Number: Quantity 4 Type: SEATAC-WWA19-81534 Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 Project Type Quantity 3 Catalog No. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Data Weight 10 lbs [4.6 kg] EPA 0.44 ft2 Ordering Information Sample Catalog No. GCM2-30H-MV-NW-2R-GY-700-PCR7-WL LED Color 30H Drive Product Voltage Distribution Finish1 Options Code Temperature Current Code2 GCM2 30H MV 120-277V WW 3000K 2S Type 2 Short GY Gray 530 FDC3 Fixed Drive Current HV 347-480V NW 4000K 2R Type 2 Medium DB Dark 610 LPCR Less Photocontrol CW 5000K 3R Type 3 Medium Bronze 700 Receptacle 4 Type 4 BK Black 850 PCR74 ANSI 7-wire Photo- 5 Type 5 1A control Receptacle PCR7-CR5 Control Ready 7-wire PC 40H Drive Receptacle GCM2 40H WL Utility Wattage Label Current Code2 4B 4-Bolt Mounting Bracket 575 RWG Rubber Wildlife Guard 700 SWTB Straight Wire Terminal Block 850 BBL Bubble Level 950 DSC Door Safety Cable 1A CF6 Coastal Paint Finish Notes: 1 Gray, Black, and Dark Bronze standard. Consult factory for other finishes. Accessories* 2 Specified drive current code is the factory set drive current. Field adjustable current selector enables HSSGCM7 House Side Shield, Snap-On* fixture to be changed in the field to adjust light output for local conditions (not available with Fixed Drive 8 CSSGCM Cul-De-Sac Side Shield, Snap-On* Current (FDC) or PCR7-CR option). Consult factory if wattage limits require a special drive current. FSSGCM9 Front Side Shield, Snap-On* 3 Non-field adjustable, fixed drive current. Specify required drive current. Not available with PCR7-CR option. 10 SPB Square Pole Horizontal Arm Bracket 4 Includes current selector that enables field adjustability of light levels. Includes connectors to allow easy RPB10 Round Pole Horizontal Arm Bracket upgrade of wireless dimming via PCR7. Wireless node by others. 10 PTB Pole Top Tenon Horizontal 5 Control-ready wired at factory for wireless none dimming (node by others). Current selector not included Arm Bracket in the fixture. Not able to adjust above specified drive current. 10 PTB2 Pole Top Tenon Horizontal 6 Specify the CF Option for coastal installation. See warranty for details. Arm Bracket (2@180o) 7 Flush mounted house side shield. Shield cuts light off at 1/2 mounting height behind luminaire. WB10 Wall Horizontal Arm Bracket 8 Flush mounted cul-de-sac shield. Shield cuts light off at 1/2 mounting height behind luminaire and 1-1/2 BSK Bird Deterrent Spider Kit mounting height on either side of luminaire. LLPC11 Long-Life Twist Lock Photocontrol 9 Flush mounted front side shield cuts light off at approximately one mounting height in front of luminaire SC Twist Lock Shorting Cap (street side). *Accessories are ordered separately and not to be included in 10 Specify Color (GY, DB, BK) the catalog number. For factory installed HSS, CSS, and FSS 11 Specify MV (120-277V) or HV (347V-480V) consult factory. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 1/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Specifications Housing Quality Control Finish Die cast aluminum housing with universal Every luminaire is performance tested before Housing receives a durable, fade-resistant two-bolt slip fitter mounts to 1-1/4â€ to 2â€ and after a 2-hour burn-in period. Assembled polyester powder coat finish with 3.0 mil nominal (1-5/8â€ to 2-3/8â€ O.D.) diameter mast arm. in the USA. thickness. Standard finish tested to withstand One-piece aluminum housing provides passive 5000 hours in salt spray exposure per ASTM B117 heat-sinking of the LEDs and has upper surfaces Optical Systems and Coastal Finish per ASTM G85. Finish meets that shed precipitation. Four-bolt mounting Micro-lens optical systems produce IESNA scribe creepage rating 8 per ASTM D1654. Finish bracket is available. Mounting provisions meet Type 2, Type 3, Type 4, or Type 5 distributions tested 500 hours in UV exposure per ASTM G154 3G vibration per ANSI C136.31-2010 Normal and are fully sealed to maintain an IP66 rating. and meets ASTM D523 gloss retention. Luminaire produces 0% total lumens above 90â° Application, Bridge & Overpass. Mounting has leveling adjustment from Â± 5Â° in 2.5Â° steps. (BUG Rating, U=0). Optional house side shield Listings/Ratings/Labels cuts light off at 1/2 mounting height behind Electrical components are accessed without Luminaires are UL listed for use in wet locations luminaire. Front side shield cuts light off at tools via a high-strength, non-conductive in the United States and Canada. DesignLights approximately one mounting height in front of polycarbonate door with quick-release latches. Consortiumâ„¢ qualified product. Consult DLC the luminaire (street side). Cul-de-sac shield Polycarbonate material meets UL 746C for provides back and side light control for end QPL for Standard and Premium Classification outdoor usage. Available rubber wildlife guard of cul-de-sac applications. All shields are field Listings. International Dark Sky Association listed. (RWG option) conforms to mast arm with no installable without tools. Luminaire is qualified to operate at ambient gaps. temperatures of -40Â°C to 40Â°C. Electrical Light Emitting Diodes Rated life of electrical components is 100,000 Photometry High-flux/High-power white LEDs produce a hours. Uses isolated power supply that is Luminaires photometrics are tested by certified minimum of 90% of initial intensity over 75,000 1-10V dimmable. Power supply is wired with independent testing laboratories in accordance hours of life based on IES TM-21 (L90 â‰¥ 75k quick-disconnect terminals. Power supply with IES LM-79 testing procedures. hours). LEDs are tested in accordance with IES features a minimum power factor of .90 and LM-80 testing procedures. LEDs have correlated <20% Total Harmonic Distortion (THD). EMC Warranty color temperature of 3000K (WW), 4000K meets or exceeds FCC CFR Part 15. Terminal 10-year limited warranty is standard on luminaire (NW), or 5000K (CW) and 70 CRI minimum. block accommodates 6 to 14 gauge wire. Surge and components. LEDs are 100% mercury and lead free. protection complies with IEEE/ANSI C62.41 Vandal Resistance Category C High, 20kV/10kA and ANSI C136.2- Field Adjustability 2015, 20kV/10kA. Housing and optics rated to IK10 LED drive current can be changed in the field Standards to adjust light output for local conditions (not Controls Luminaire complies with: available with Fixed Drive Current (FDC) or 3-Wire photocontrol receptacle is standard. ANSI: C136.2, C136.3, C136.10, C136.13, C136.15, PCR7-CR option). The specified drive current ANSI C136.41 7-wire (PCR7) photocontrol C136.22, C136.31, C136.35, C136.37, C136.41, code will be the factory set drive current. Field receptacle is available. All photocontrol C62.41, C78.377, C82.77 adjustments can be made with the current receptacles have tool-less rotatable bases. Other: FCC 47 CFR, IEC 60598, ROHS II, UL 1449, selector included in the fixture. Field adjustable Wireless control module is provided by others. UL 1598 range shown in performance data table. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 2/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Performance Data: 3000K (WW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 5770 120 610 58 6700 116 30H 700 68 7620 112 850 82 8800 107 1A 101 10480 104 GCM2 575 73 8780 120 700 88 10230 116 40H 850 107 11960 112 950 121 13040 108 1A 135 14080 104 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Performance Data: 4000K (NW) and 5000K (CW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 6330 132 610 58 7440 128 30H 700 68 8550 126 850 82 9830 120 1A 101 11720 116 GCM2 575 73 9590 131 700 88 11260 128 40H 850 107 13270 124 950 121 14390 119 1A 135 15430 114 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 3/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet BUG Ratings 3000K (WW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 850 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 40H 850 B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 4000K (NW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B3 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 5000K (CW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 4/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2436/900A350 W/ GFI City of Arlington St Lighting RECEPTACLE Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY A 1 ADD COLOR CALL OUT 12.2.19 M.K. 6' CAT. #; SCLBCHUN2436/900A350/GFCI Quantity 3 .19 PER 1" AWS D.1.1 TUBE THK. 12.75" 1.25" BOLT HOLE 12" BOLT CIRCLE POLE SHAFT - 16 SHARP FLUTE 12.75" CROSS SECTION 9" POLE BASE DIAMETER DETAIL 8 - BASE PLATE 1" LE (4) 1" X 36" X 4" ANCHOR BOLTS WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 SHAFT; 9" x 4.1" x 35' TAPERED (.14"/FT) PO 36" 15 AMP, 120V DUPLEX RECEPTACLE @ 13' ABOVE GRADE WITH WEATHERPROOF, IN USE COVER ARMS TO MATCH EXISTING STAINLESS STEEL 4" PLANT BASKETS DETAIL 8 - BASE PLATE * ALL HARDWARE TO BE STAINLESS STEEL * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING DECORATIVE 2 PC. CLAMP AROUND CAST ALUMINUM BASE COVER; CAT.#: BCHUN2436 FINISHING SPECIFICATIONS SEE DETAIL 4 - BASE COVER DETAIL 36" 24" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: SCLBCHUN2436/900A350/GFCI DATE: R.R. 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO C.O. ARLINGTON, WA DRAWING NUMBER: SHEET NUMBER: Lighting & Design CHANGE DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 1 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2032/590A140 City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY KING LUMINAIRE 70W A 1 REMOVE GFCI & ADD COLOR CALL OUT 12.2.19 M.K. MH K199 CAT. #; SCLBCHUN2032/590A140 Quantity 4 3.5" x 3.5" POLE TOP TENON 0.19" PER 0.875" AWS TUBE THK. 10" 1.25" x 1.75" SLOTTED ANCHOR BOLT HOLES 9" BOLT CIRCLE 10" 5.9" POLE BASE DIAMETER 16' LIGHT CENTER LE 14' DETAIL 2 - BASE PLATE 0.75" (4) 0.75" X 24" X 3" ANCHOR BOLTS TAPERED (.14"/FT) POSHAFT - 5.9" x 3.94" x WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 24" 3" DETAIL 3 - ANCHOR BOLT * ALL HARDWARE TO BE STAINLESS STEEL 32" * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING FINISHING SPECIFICATIONS 20" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: DATE: R.R. SLCBCHUN2032/590A140 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO CHANGE C.O. ARLINGTON, WA. DRAWING NUMBER: SHEET NUMBER: Lighting & Design DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 2 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 1"-8 Bolt 1"-8 36" F1554 Grade 55 90 Bent Anchor Nut 1"-8 A563 Grade DH Heavy Hex Washer 1" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 12 36" Notes: BOLT ASSY1" X 36" X 4" F1554GR55 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date Customer SEA-TAC LTG & CONTROLS 11/18/2019 SEATAC-WWA19-81534Type: Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 3/4"-10 Bolt 3/4"-10 24" F1554 Grade 55 90 Bent Anchor Nut 3/4"-10 A563 Grade DH Heavy Hex Washer 3/4" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 16 24" Notes: BOLT ASSY3/4" X 24" X 3" F1554GR36 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date SEATAC-WWA19-81534Type: Customer SEA-TAC LTG & CONTROLS 11/18/2019 Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com All Acorn Light Fixtures to be 16' H 100A Meter & - Acorn Panel for street All Cobra Head Light - No issue, (1) tree lighting Fixtures to be 32' H deleted to reduce K C 137.30 A conflict 0.1 0.2 0.3 0.3 0.3 0.324' - 7"137.40 " BT 5- E ' 0 S 2 R 0.2 0.3 TOC 137.200.4 0.4 0.5 0.4 A E 0 < R WA WA0 0 R/ 0.2 0.4 0.5 0.8 0.8 0.8 0 0 6/L-6 - 0 WASH 0.3 0.4 TOP 142.00.7 0.8 0.7 0.7 0 142.4DRAIN TOE 138.0 Acorn_1 0.3 0.5 0.8 0.8 0.4 0.8 0 TOP 142.0 0 ILEFA - Cobra Head TOE 138.25 142.4 0.4 0.5 0.7 1.0 0.8 0.9 0 - No issue. TOC 137.25 0 0.4 0.5 0.6137.350.8 0.8 0.7 0 137.45 0 TOP 142.0 0 PAHhfg R/F 0.5 0.6 TOE 138.250.7 0.8 0.8 0.6 0 TOP 142.0 0 TOE 138.25 0.6 0.7 0.9 0.9 0.9 0.7 TOC 137.35 0 0.7 0.9 1.1137.451.2 1.1 0.8 0 1/L-6; S ROOT 137.55 0 0.7 1.0 1.2137.901.4 1.3 0.9 0 IRR TOC 137.45 0 CO /F - Acorn 0.7 1.0 TOP 142.01.3 1.5 1.5 1.1 0 0 TOE 138.25 Cobra138.2 - See description NDmb 0.4 0.7 1.0 1.2 1.5 1.6 1.2 below LNDG J LNDG SEC 0.4 0.7 1.0 1.3 1.4 1.4 1.0 WA WA 142.3 138 137.4 138.80 0.5 0.7 1.0 1.2 1.3 1.2 0.9 ACEBL 137.0 137.55 0.5 0.7 0.9 TOP 142.01.0 1.1 1.0 0.8 < SS TOE 138.25 - To accommodate (2) 0.5 0.6 0.7 0.8 67th AVENUE NE0.9 0.9 0.7 Acorns and Cobra Head in TOC 137.60 138.1 0.4 0.5 0.6 0.8 0.8 0.8 0.6 0 front of two buildings, trees to 00 0 R/F TOP 142.0 0.4 0.5 0.6TOE 138.250.8 0.9 0.8 0.7 0 6/L-6 - the north of Cobra Head will 0 WASHE TOC 137.64 0 DRAINR to shift 3' further north and 0.3 0.5 0.7 0.9 1.2 1.0 1.0 trees to the south of the 0.3 0.5 0.7 1.1 1.1 0.6Acorn_10.9 0 0 Cobra Head to shift 5' further TOC 137.65 0 142.3 0.3 0.5 0.7 TOP 142.01.1 1.1 0.6138 0.9 0 south (per eccosDesign). TOE 138.5 0 PAHhfg 0.4 0.5 0.7 0.9 1.2 1.1 1.0 00 R/F 0.4 0.5 0.7 0.8 0.9 0.9 0.7 0 - Cobra Head 0 TOP 142.0 TOE 138.5 - See description 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0 0 ILEX above. 0.5 0.6 0.8 1.0 1.0 1.0 142.30.7 0 INST TOC 137.86 0 0.5 0.7 1.0 1.2 1.2 1.1 0.8 0 F 138.10 0 0 TOP 1 0.5 0.7 1.1 1.3 1.4 1.3 WA1.0 YH TOE 1 D J TOP 1 0.5 0.7 1.0 1.3 1.5 1.5 1.1 0 TOE 1 Cobra00 0 R/ SEC 0.5 0.7 1.0 1.3 1.5 1.6 1.2 0 0 - Acorn 0.5 0.7 1.1 1.3 1.5 1.4 1.0 0 6/L-6 WAS DRA - See description TOC 137.92 0 0.5 0.8 1.0 1.2 1.3 1.2 0.9 0 above. TOP 142.0 0 0.6 0.7 0.9 1.1 1.1 1.0TOE 138.50.8 0 0 138.25 00 R/F 0.5 0.6 0.8 0.9 1.0 0.9 0.7 00PAHhfg 0 0.5 0.6 0.7 0.9 1.0 TOP 142.00.9 0.8 0 TOE 138.5 0 TOP TOE 0.4 0.5 0.7 0.9 1.2 1.1 1.0 0 138.15WA 0 0.4 0.5 0.7 1.1 1.1 0.8Acorn_10.9 0 TOC 138.05 0 1 0.4 0.6 0.7 1.1138.25 1.1 0.6 0.9 0 0 SEC WA - Cobra Head 0.4 0.5 0.7 0.9 1.2 1.0 1.0 00 138.25 - No issue 0.4 0.5 0.7TOC 138.130.8 0.9 0.9 0.7 0 0 WA 0.5 0.6 0.7 0.8 0.9 0.8 0.6 137.9 TOP 14 TOE 13 0.6 0.7 0.8 1.0 1.0 0.9 0.7 138.1 137.80 WA 138 WA 0.6 0.7 1.0 137.651.1 1.2 1.1 0.8 139.2 LSSSss J 0.5 0.8 1.1 1.3 1.4 1.3 0.8 137.9 138.1 0.5 0.8 1.1 1.3 1.5 1.4 0.9 Cobra 13 0.5 0.7 1.1 1.3 1.6 1.6 0.1 0 0 0 0 J 0.5 0.8 1.1 1.3 1.5 1.4 0.90 TOP 142.0 0 - Acorn TOE 139.25 0 - No issue 0.5 0.8 1.1TOP 142.01.2 1.3 1.2 0.80 SEC TOE 139.0 0 0.5 0.7 0.9 1.1 1.1 1.0 0.70 TOC 138.5 0 R/F 138.6 0 0.5 0.6 0.7 0.8 0.9 0.8 0.6 138.7 0 67th AVENUE NE 0.4 0.5 0.6 0.7 0.8 0.8 0.6 TOP 142.0 TOE 139.25 0.4 0.4 0.6 0.7139.201.0 0.9 0.8 0 R/F 139.10 0 TOC 138.86 01/L-6; S 0.3 0.4 0.5 0.9 0.9 0.7 0.8 Acorn_10ROOT B TOP 142.0 0 TOE 139.25LSSSss 0.2 0.4 0.5 0.9 0.8 0.4 0.8 0 R/F 139.30 0 IL A 139.20 0 0.2 0.3 0.5 0.6 0.9 0.8 0.8 0 TOC 139.06 0 0.2 0.3 0.4 0.5 0.5 0.5 0.5 0 142. 0.1 0.2 0.3 0.3 0.4 0.4 0.3 TO 0.1 0.1 0.2 0.2 0.2 0.2 0.2 TODN 0.1 0.1 0.1 0.1 0.2 0.2 0.1 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 24' - 7" 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.0 FRONT SETBACK 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Luminaire Schedule Symbol Qty Label Lum. Lumens LLF Description 3 Cobra 11960 0.810 GCM2-40H-MV-WW-2R-XX-850 S 4 Acorn_1 4021 0.810 K118-B3AR-V-40(SSL)-1036-3K STREET AND PATHWAY LIGHTING CALCULATIONS SCALE: 1" = 50'-0" Jose Tapia From: Patrik Dylan (eccosDesign) <patrik@eccosdesign.com> Sent: Wednesday, January 8, 2020 10:48 AM To: Jose Tapia Cc: Doug Hofius; Chad Van Ry; Matt Tilton; Ian McKay; Tim Spink; Michael Stevens; Chevy Chase; Jared Underbrink; Joe Galusha Subject: Re: FW: Centennial Park - Submittal #260000-02 & Permit Set Plans Hi Jose The Green Vase Zelkova projects to be 40 feet wide at maturity which means the canopies will eventually touch. That being said, this variety is 'vase shaped' and once it starts to get that wide, it is only at the top. I have attached a link that show the form pretty well. If the light is a pedestrian scale light at 12-14 feet the tree should easily grow up and over the light. Worst case, minor lateral pruning in 15 years, but likely none. If the light is a tall freeway style street light at 30 feet tall than there may be a conflict. In any event the light should be pushed to the middle of the two trees as possible. Also, this is in an urban planting, vs ideal conditions, so I expect there to be a fair amount of 'dwarfing' and think the final width in 20 years may be 25 feet or something like that. I am happy to switch to something more columnar if we want to be safe or if that would accelerate city approval, but if the light is low, I think we will be fine. Fact sheet below. Thx, 1 _________________________ Patrik Dylan, PLA eccosDesign LLC Landscape Architecture and Planning p. 360.419.7400 (forwards to cell) f. 800.508.2017 txt. 360.421.4894 www.eccosdesign.com On Tue, Jan 7, 2020 at 10:37 AM Jose Tapia <JoseT@exxelpacific.com> wrote: Team: See commentâ€™s below from the cityâ€™s engineers regarding the streetlights and landscaping â€“ minor corrections and clarification needed. Be great to see something by end of week so we can resubmit to close these comments out with the city. Thank you, Jose Tapia 2 Acorn Cobra Acorn SUBMITTAL SHEET Page 1 Your Logo Here Exxel Pacific, Inc. 323 Telegraph Road Bellingham 98226 360-734-2872 Job: Centennial Park Spec Section Num: N/A Submittal: 260000-02 Revision: Package No: Package Revision: Date Submitted: 12/12/19 Response Required: 12/17/19 Submittal Title: Street Lighting - Centennial Trail Submittal Detail: Product data and model selection with Light Layout Contractor: Contractorâ€™s Stamp Project:Centennial Park Exxel Pacific Reviewed By: Matt Tilton Date Submitted: 9/18/19 Submittal #: 260000-02 âœ˜ Reviewed Revise & Resubmit Make Corrections Noted Rejected This submittal/shop drawing has been reviewed by Exxel Pacific for general conformance with design concept only and does not relieve this subcontractor or supplier of the responsibility for conformance with the Contract Documents, all of which have priority over this submittal. Subcontractor/Supplier is responsible for all dimensions and fabrication to be confirmed at the jobsite. Design Team Architect/Engineer Stamp Dykeman Architects CG Engineering Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Date: Dec 2, 2019 Phone: (206) 575-6865 Fax: Job Name City of Arlington St Lighting SEATAC-WWA19-81534 Arlington WA Bid Date Nov 5, 2019 Submittal Date Nov 26, 2019 Distributor: Platt Electric Supply - Bellingham 1825 Ellis St. Bellingham WA 98225 Date: Dec 2, 2019 Page 1/1 Transmittal Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Phone: (206) 575-6865 From: Mike Card Project City of Arlington St Lighting Quote# SEATAC-WWA19-81534 Location Arlington WA Contact: ATTACHED WE ARE SENDING YOU 1 COPY OF THE FOLLOWING ITEM: X Drawings Specifications Other: Prints Information Plans X Submittals THESE ARE TRANSMITTED FOR: Prior Approval Resubmittal for Approval Record X Approval Corrections Bids due on: Approval as Submitted Your Use Other: Approval as Noted Review and Comment Type MFG Part KING LUMINAIRE (WWA) K199R-B3AR-V-40W(SSL)-1036- 120:277V-K13-3K-BK LED Post Top Luminaire Leotek GCM2-40H-MV-WW-2R-BK-850-FFA SOUTH COAST LIGHTING & DESIG BCHUN2436/900A350 W/ GFI RECEPTACLE 35' DECO POLE W/ 6' DECO ARM @ 38' MH, BANNER ARMS, AND TWIN PLANTER BRACKETS SOUTH COAST LIGHTING & DESIG BCHUN2032/590A140 16' MH DECO POLE W/ BANNER ARMS, AND TWIN PLANTER BRACKETS Sea Tac c/o Portland Bolt 1" X 36" X 4" F1554GR55 ANCHOR BOLT ASSY Sea Tac c/o Portland Bolt 3/4" X 24" X 3" F1554GR36 ANCHOR BOLT ASSY FF00009 www.seataclighting.com Page 1/1 Submitted by Sea-Tac Lighting & Controls, LLC (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Notes: 120:277V-K13-3K-BKK199R-B3AR-V-40W(SSL)-1036-Catalog Number: Quantity 4 Type: SEATAC-WWA19-81534 Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 Project Type Quantity 3 Catalog No. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Data Weight 10 lbs [4.6 kg] EPA 0.44 ft2 Ordering Information Sample Catalog No. GCM2-30H-MV-NW-2R-GY-700-PCR7-WL LED Color 30H Drive Product Voltage Distribution Finish1 Options Code Temperature Current Code2 GCM2 30H MV 120-277V WW 3000K 2S Type 2 Short GY Gray 530 FDC3 Fixed Drive Current HV 347-480V NW 4000K 2R Type 2 Medium DB Dark 610 LPCR Less Photocontrol CW 5000K 3R Type 3 Medium Bronze 700 Receptacle 4 Type 4 BK Black 850 PCR74 ANSI 7-wire Photo- 5 Type 5 1A control Receptacle PCR7-CR5 Control Ready 7-wire PC 40H Drive Receptacle GCM2 40H WL Utility Wattage Label Current Code2 4B 4-Bolt Mounting Bracket 575 RWG Rubber Wildlife Guard 700 SWTB Straight Wire Terminal Block 850 BBL Bubble Level 950 DSC Door Safety Cable 1A CF6 Coastal Paint Finish Notes: 1 Gray, Black, and Dark Bronze standard. Consult factory for other finishes. Accessories* 2 Specified drive current code is the factory set drive current. Field adjustable current selector enables HSSGCM7 House Side Shield, Snap-On* fixture to be changed in the field to adjust light output for local conditions (not available with Fixed Drive 8 CSSGCM Cul-De-Sac Side Shield, Snap-On* Current (FDC) or PCR7-CR option). Consult factory if wattage limits require a special drive current. FSSGCM9 Front Side Shield, Snap-On* 3 Non-field adjustable, fixed drive current. Specify required drive current. Not available with PCR7-CR option. 10 SPB Square Pole Horizontal Arm Bracket 4 Includes current selector that enables field adjustability of light levels. Includes connectors to allow easy RPB10 Round Pole Horizontal Arm Bracket upgrade of wireless dimming via PCR7. Wireless node by others. 10 PTB Pole Top Tenon Horizontal 5 Control-ready wired at factory for wireless none dimming (node by others). Current selector not included Arm Bracket in the fixture. Not able to adjust above specified drive current. 10 PTB2 Pole Top Tenon Horizontal 6 Specify the CF Option for coastal installation. See warranty for details. Arm Bracket (2@180o) 7 Flush mounted house side shield. Shield cuts light off at 1/2 mounting height behind luminaire. WB10 Wall Horizontal Arm Bracket 8 Flush mounted cul-de-sac shield. Shield cuts light off at 1/2 mounting height behind luminaire and 1-1/2 BSK Bird Deterrent Spider Kit mounting height on either side of luminaire. LLPC11 Long-Life Twist Lock Photocontrol 9 Flush mounted front side shield cuts light off at approximately one mounting height in front of luminaire SC Twist Lock Shorting Cap (street side). *Accessories are ordered separately and not to be included in 10 Specify Color (GY, DB, BK) the catalog number. For factory installed HSS, CSS, and FSS 11 Specify MV (120-277V) or HV (347V-480V) consult factory. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 1/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Specifications Housing Quality Control Finish Die cast aluminum housing with universal Every luminaire is performance tested before Housing receives a durable, fade-resistant two-bolt slip fitter mounts to 1-1/4â€ to 2â€ and after a 2-hour burn-in period. Assembled polyester powder coat finish with 3.0 mil nominal (1-5/8â€ to 2-3/8â€ O.D.) diameter mast arm. in the USA. thickness. Standard finish tested to withstand One-piece aluminum housing provides passive 5000 hours in salt spray exposure per ASTM B117 heat-sinking of the LEDs and has upper surfaces Optical Systems and Coastal Finish per ASTM G85. Finish meets that shed precipitation. Four-bolt mounting Micro-lens optical systems produce IESNA scribe creepage rating 8 per ASTM D1654. Finish bracket is available. Mounting provisions meet Type 2, Type 3, Type 4, or Type 5 distributions tested 500 hours in UV exposure per ASTM G154 3G vibration per ANSI C136.31-2010 Normal and are fully sealed to maintain an IP66 rating. and meets ASTM D523 gloss retention. Luminaire produces 0% total lumens above 90â° Application, Bridge & Overpass. Mounting has leveling adjustment from Â± 5Â° in 2.5Â° steps. (BUG Rating, U=0). Optional house side shield Listings/Ratings/Labels cuts light off at 1/2 mounting height behind Electrical components are accessed without Luminaires are UL listed for use in wet locations luminaire. Front side shield cuts light off at tools via a high-strength, non-conductive in the United States and Canada. DesignLights approximately one mounting height in front of polycarbonate door with quick-release latches. Consortiumâ„¢ qualified product. Consult DLC the luminaire (street side). Cul-de-sac shield Polycarbonate material meets UL 746C for provides back and side light control for end QPL for Standard and Premium Classification outdoor usage. Available rubber wildlife guard of cul-de-sac applications. All shields are field Listings. International Dark Sky Association listed. (RWG option) conforms to mast arm with no installable without tools. Luminaire is qualified to operate at ambient gaps. temperatures of -40Â°C to 40Â°C. Electrical Light Emitting Diodes Rated life of electrical components is 100,000 Photometry High-flux/High-power white LEDs produce a hours. Uses isolated power supply that is Luminaires photometrics are tested by certified minimum of 90% of initial intensity over 75,000 1-10V dimmable. Power supply is wired with independent testing laboratories in accordance hours of life based on IES TM-21 (L90 â‰¥ 75k quick-disconnect terminals. Power supply with IES LM-79 testing procedures. hours). LEDs are tested in accordance with IES features a minimum power factor of .90 and LM-80 testing procedures. LEDs have correlated <20% Total Harmonic Distortion (THD). EMC Warranty color temperature of 3000K (WW), 4000K meets or exceeds FCC CFR Part 15. Terminal 10-year limited warranty is standard on luminaire (NW), or 5000K (CW) and 70 CRI minimum. block accommodates 6 to 14 gauge wire. Surge and components. LEDs are 100% mercury and lead free. protection complies with IEEE/ANSI C62.41 Vandal Resistance Category C High, 20kV/10kA and ANSI C136.2- Field Adjustability 2015, 20kV/10kA. Housing and optics rated to IK10 LED drive current can be changed in the field Standards to adjust light output for local conditions (not Controls Luminaire complies with: available with Fixed Drive Current (FDC) or 3-Wire photocontrol receptacle is standard. ANSI: C136.2, C136.3, C136.10, C136.13, C136.15, PCR7-CR option). The specified drive current ANSI C136.41 7-wire (PCR7) photocontrol C136.22, C136.31, C136.35, C136.37, C136.41, code will be the factory set drive current. Field receptacle is available. All photocontrol C62.41, C78.377, C82.77 adjustments can be made with the current receptacles have tool-less rotatable bases. Other: FCC 47 CFR, IEC 60598, ROHS II, UL 1449, selector included in the fixture. Field adjustable Wireless control module is provided by others. UL 1598 range shown in performance data table. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 2/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Performance Data: 3000K (WW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 5770 120 610 58 6700 116 30H 700 68 7620 112 850 82 8800 107 1A 101 10480 104 GCM2 575 73 8780 120 700 88 10230 116 40H 850 107 11960 112 950 121 13040 108 1A 135 14080 104 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Performance Data: 4000K (NW) and 5000K (CW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 6330 132 610 58 7440 128 30H 700 68 8550 126 850 82 9830 120 1A 101 11720 116 GCM2 575 73 9590 131 700 88 11260 128 40H 850 107 13270 124 950 121 14390 119 1A 135 15430 114 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 3/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet BUG Ratings 3000K (WW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 850 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 40H 850 B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 4000K (NW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B3 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 5000K (CW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 4/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2436/900A350 W/ GFI City of Arlington St Lighting RECEPTACLE Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY A 1 ADD COLOR CALL OUT 12.2.19 M.K. 6' CAT. #; SCLBCHUN2436/900A350/GFCI Quantity 3 .19 PER 1" AWS D.1.1 TUBE THK. 12.75" 1.25" BOLT HOLE 12" BOLT CIRCLE POLE SHAFT - 16 SHARP FLUTE 12.75" CROSS SECTION 9" POLE BASE DIAMETER DETAIL 8 - BASE PLATE 1" LE (4) 1" X 36" X 4" ANCHOR BOLTS WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 SHAFT; 9" x 4.1" x 35' TAPERED (.14"/FT) PO 36" 15 AMP, 120V DUPLEX RECEPTACLE @ 13' ABOVE GRADE WITH WEATHERPROOF, IN USE COVER ARMS TO MATCH EXISTING STAINLESS STEEL 4" PLANT BASKETS DETAIL 8 - BASE PLATE * ALL HARDWARE TO BE STAINLESS STEEL * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING DECORATIVE 2 PC. CLAMP AROUND CAST ALUMINUM BASE COVER; CAT.#: BCHUN2436 FINISHING SPECIFICATIONS SEE DETAIL 4 - BASE COVER DETAIL 36" 24" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: SCLBCHUN2436/900A350/GFCI DATE: R.R. 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO C.O. ARLINGTON, WA DRAWING NUMBER: SHEET NUMBER: Lighting & Design CHANGE DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 1 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2032/590A140 City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY KING LUMINAIRE 70W A 1 REMOVE GFCI & ADD COLOR CALL OUT 12.2.19 M.K. MH K199 CAT. #; SCLBCHUN2032/590A140 Quantity 4 3.5" x 3.5" POLE TOP TENON 0.19" PER 0.875" AWS TUBE THK. 10" 1.25" x 1.75" SLOTTED ANCHOR BOLT HOLES 9" BOLT CIRCLE 10" 5.9" POLE BASE DIAMETER 16' LIGHT CENTER LE 14' DETAIL 2 - BASE PLATE 0.75" (4) 0.75" X 24" X 3" ANCHOR BOLTS TAPERED (.14"/FT) POSHAFT - 5.9" x 3.94" x WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 24" 3" DETAIL 3 - ANCHOR BOLT * ALL HARDWARE TO BE STAINLESS STEEL 32" * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING FINISHING SPECIFICATIONS 20" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: DATE: R.R. SLCBCHUN2032/590A140 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO CHANGE C.O. ARLINGTON, WA. DRAWING NUMBER: SHEET NUMBER: Lighting & Design DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 2 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 1"-8 Bolt 1"-8 36" F1554 Grade 55 90 Bent Anchor Nut 1"-8 A563 Grade DH Heavy Hex Washer 1" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 12 36" Notes: BOLT ASSY1" X 36" X 4" F1554GR55 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date Customer SEA-TAC LTG & CONTROLS 11/18/2019 SEATAC-WWA19-81534Type: Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 3/4"-10 Bolt 3/4"-10 24" F1554 Grade 55 90 Bent Anchor Nut 3/4"-10 A563 Grade DH Heavy Hex Washer 3/4" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 16 24" Notes: BOLT ASSY3/4" X 24" X 3" F1554GR36 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date SEATAC-WWA19-81534Type: Customer SEA-TAC LTG & CONTROLS 11/18/2019 Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com 100A Meter & Panel for street lighting K C A 0.1 0.2 0.3 0.3 0.3 0.324' - 7" " BT 5- E ' 0 S 2 R 0.2 0.3 0.4 0.4 0.5 0.4 A E R 0.2 0.4 0.5 0.8 0.8 0.8 0.3 0.4 0.7 0.8 0.7 Acorn_10.7 0.3 0.5 0.8 0.8 0.4 0.8 0.4 0.5 0.7 1.0 0.8 0.9 0.4 0.5 0.6 0.8 0.8 0.7 0.5 0.6 0.7 0.8 0.8 0.6 0.6 0.7 0.9 0.9 0.9 0.7 0.7 0.9 1.1 1.2 1.1 0.8 0.7 1.0 1.2 1.4 1.3 0.9 0.7 1.0 1.3 1.5 1.5 1.1 Cobra 0.4 0.7 1.0 1.2 1.5 1.6 1.2 J SEC 0.4 0.7 1.0 1.3 1.4 1.4 1.0 0.5 0.7 1.0 1.2 1.3 1.2 0.9 0.5 0.7 0.9 1.0 1.1 1.0 0.8 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0.4 0.5 0.6 0.8 0.8 0.8 0.6 0.4 0.5 0.6 0.8 0.9 0.8 0.7 0.3 0.5 0.7 0.9 1.2 1.0 1.0 0.3 0.5 0.7 1.1 1.1 0.6Acorn_10.9 0.3 0.5 0.7 1.1 1.1 0.6 0.9 0.4 0.5 0.7 0.9 1.2 1.1 1.0 0.4 0.5 0.7 0.8 0.9 0.9 0.7 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0.5 0.6 0.8 1.0 1.0 1.0 0.7 0.5 0.7 1.0 1.2 1.2 1.1 0.8 0.5 0.7 1.1 1.3 1.4 1.3 1.0 J 0.5 0.7 1.0 1.3 1.5 1.5Cobra1.1 SEC 0.5 0.7 1.0 1.3 1.5 1.6 1.2 0.5 0.7 1.1 1.3 1.5 1.4 1.0 0.5 0.8 1.0 1.2 1.3 1.2 0.9 0.6 0.7 0.9 1.1 1.1 1.0 0.8 0.5 0.6 0.8 0.9 1.0 0.9 0.7 0.5 0.6 0.7 0.9 1.0 0.9 0.8 0.4 0.5 0.7 0.9 1.2 1.1 1.0 0.4 0.5 0.7 1.1 1.1 0.8Acorn_10.9 0.4 0.6 0.7 1.1 1.1 0.6 0.9 SEC 0.4 0.5 0.7 0.9 1.2 1.0 1.0 0.4 0.5 0.7 0.8 0.9 0.9 0.7 0.5 0.6 0.7 0.8 0.9 0.8 0.6 0.6 0.7 0.8 1.0 1.0 0.9 0.7 0.6 0.7 1.0 1.1 1.2 1.1 0.8 J 0.5 0.8 1.1 1.3 1.4 1.3 0.8 0.5 0.8 1.1 1.3 1.5 1.4 0.9 Cobra 0.5 0.7 1.1 1.3 1.6 1.6 0.1 J 0.5 0.8 1.1 1.3 1.5 1.4 0.9 0.5 0.8 1.1 1.2 1.3 1.2 0.8 SEC 0.5 0.7 0.9 1.1 1.1 1.0 0.7 0.5 0.6 0.7 0.8 0.9 0.8 0.6 0.4 0.5 0.6 0.7 0.8 0.8 0.6 0.4 0.4 0.6 0.7 1.0 0.9 0.8 0.3 0.4 0.5 0.9 0.9 0.7Acorn_10.8 0.2 0.4 0.5 0.9 0.8 0.4 0.8 0.2 0.3 0.5 0.6 0.9 0.8 0.8 0.2 0.3 0.4 0.5 0.5 0.5 0.5 0.1 0.2 0.3 0.3 0.4 0.4 0.3 0.1 0.1 0.2 0.2 0.2 0.2 0.2 DN 0.1 0.1 0.1 0.1 0.2 0.2 0.1 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 24' - 7" 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.0 FRONT SETBACK 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Luminaire Schedule Symbol Qty Label Lum. Lumens LLF Description 3 Cobra 11960 0.810 GCM2-40H-MV-WW-2R-XX-850 S 4 Acorn_1 4021 0.810 K118-B3AR-V-40(SSL)-1036-3K STREET AND PATHWAY LIGHTING CALCULATIONS SCALE: 1" = 50'-0" City of Arlington 18204 59th Avenue NE Arlington, WA 98223 Re: Centennial Park 17231 67th Ave NE, Arlington, WA 98223 Subject: Street Lighting Review â€“ Response Date: January 28, 2020 This letter is a follow up response to the street lighting review, to be installed at the above referenced project frontage, along Centennial Trail. Responses to the following comments: 1) Shift the lights to directly between the trees; provide an updated photometric analysis to ensure we still have adequate lighting. a. Response: In effort to match existing Centennial Trail lighting, light fixtures and photometrics remained unchanged. See updated landscaping layout, pg. 14/17 - trees have been revised by eccosDesign, Landscape Architect, to accommodate lighting levels and spacing. 2) The proposed trees appear to be Zelkova serrata â€œGreenvaseâ€. Confirm size at maturity does not interfere will illumination. a. Response: See attached email from eccosDesign, pgs. 15-16, for species description and potential size of trees at maturity. 3) It looks like the acorn foundations are right up against the back of curb in the planter strip. These should be closer to the sidewalk as their main purpose is to provide illumination there. The foundation top elevation should be the same as the elevation of the trail. a. Response: Landscape/photometrics plans do not reflect actual locations of light foundation placement. Unless otherwise noted, foundations will be shifted to be set tight to the trail. Sincerely, Jose Tapia Project Engineer Exxel Pacific, Inc. SUBMITTAL SHEET Page 1 Your Logo Here Exxel Pacific, Inc. 323 Telegraph Road Bellingham 98226 360-734-2872 Job: Centennial Park Spec Section Num: N/A Submittal: 260000-02 Revision: Package No: Package Revision: Date Submitted: 12/12/19 Response Required: 12/17/19 Submittal Title: Street Lighting - Centennial Trail Submittal Detail: Product data and model selection with Light Layout Contractor: Contractorâ€™s Stamp Project:Centennial Park Exxel Pacific Reviewed By: Matt Tilton Date Submitted: 9/18/19 Submittal #: 260000-02 âœ˜ Reviewed Revise & Resubmit Make Corrections Noted Rejected This submittal/shop drawing has been reviewed by Exxel Pacific for general conformance with design concept only and does not relieve this subcontractor or supplier of the responsibility for conformance with the Contract Documents, all of which have priority over this submittal. Subcontractor/Supplier is responsible for all dimensions and fabrication to be confirmed at the jobsite. Design Team Architect/Engineer Stamp Dykeman Architects ARCHITECTâ€™S REVIEW IS FOR CONFORMANCE WITH INFORMATION GIVEN AND DESIGN CONCEPT EXPRESSED IN THE CONTRACT CG Engineering DOCUMENTS. NOTATIONS ON THE SUBMITTAL DO NOT RELIEVE THE CONTRACTOR FROM COMPLIANCE WITH CONTRACT DOCUMENT REQUIREMENTS NOR AUTHORIZE CHANGES TO THE CONTRACT SUM AND TIME. THE CONTRACTOR IS RESPONSIBLE FOR: DETERMINING QUANTITIES AND DIMENSIONS; SELECTING CONSTRUCTION METHODS AND PROCEDURES; COORDINATING WITH OTHERâ€™S WORK; SUITABLE PERFORMANCE OF MATERIALS AND ASSEMBLIES AND PERFORMING WORK IN A SAFE MANNER. NO EXCEPTIONS TAKEN REVIEWED NOTE MARKINGS RETURNED FOR CORRECTION RESUBMIT BY: Doug Hofius DATE: 12/30/2019 1716 WEST MARINE VIEW DRIVE EVERETT, WA 98201 PHONE: (425) 259-3161 Note potential conflicts with street trees. (also required by City of Arlington) Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Date: Dec 2, 2019 Phone: (206) 575-6865 Fax: Job Name City of Arlington St Lighting SEATAC-WWA19-81534 Arlington WA Bid Date Nov 5, 2019 Submittal Date Nov 26, 2019 Distributor: Platt Electric Supply - Bellingham 1825 Ellis St. Bellingham WA 98225 Date: Dec 2, 2019 Page 1/1 Transmittal Sea-Tac Lighting & Controls, LLC 15455 53rd Ave S Tukwila WA 98188 Phone: (206) 575-6865 From: Mike Card Project City of Arlington St Lighting Quote# SEATAC-WWA19-81534 Location Arlington WA Contact: ATTACHED WE ARE SENDING YOU 1 COPY OF THE FOLLOWING ITEM: X Drawings Specifications Other: Prints Information Plans X Submittals THESE ARE TRANSMITTED FOR: Prior Approval Resubmittal for Approval Record X Approval Corrections Bids due on: Approval as Submitted Your Use Other: Approval as Noted Review and Comment Type MFG Part KING LUMINAIRE (WWA) K199R-B3AR-V-40W(SSL)-1036- 120:277V-K13-3K-BK LED Post Top Luminaire Leotek GCM2-40H-MV-WW-2R-BK-850-FFA SOUTH COAST LIGHTING & DESIG BCHUN2436/900A350 W/ GFI RECEPTACLE 35' DECO POLE W/ 6' DECO ARM @ 38' MH, BANNER ARMS, AND TWIN PLANTER BRACKETS SOUTH COAST LIGHTING & DESIG BCHUN2032/590A140 16' MH DECO POLE W/ BANNER ARMS, AND TWIN PLANTER BRACKETS Sea Tac c/o Portland Bolt 1" X 36" X 4" F1554GR55 ANCHOR BOLT ASSY Sea Tac c/o Portland Bolt 3/4" X 24" X 3" F1554GR36 ANCHOR BOLT ASSY FF00009 www.seataclighting.com Page 1/1 Submitted by Sea-Tac Lighting & Controls, LLC (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Notes: 120:277V-K13-3K-BKK199R-B3AR-V-40W(SSL)-1036-Catalog Number: Quantity 4 Type: SEATAC-WWA19-81534 Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 Project Type Quantity 3 Catalog No. GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Data Weight 10 lbs [4.6 kg] EPA 0.44 ft2 Ordering Information Sample Catalog No. GCM2-30H-MV-NW-2R-GY-700-PCR7-WL LED Color 30H Drive Product Voltage Distribution Finish1 Options Code Temperature Current Code2 GCM2 30H MV 120-277V WW 3000K 2S Type 2 Short GY Gray 530 FDC3 Fixed Drive Current HV 347-480V NW 4000K 2R Type 2 Medium DB Dark 610 LPCR Less Photocontrol CW 5000K 3R Type 3 Medium Bronze 700 Receptacle 4 Type 4 BK Black 850 PCR74 ANSI 7-wire Photo- 5 Type 5 1A control Receptacle PCR7-CR5 Control Ready 7-wire PC 40H Drive Receptacle GCM2 40H WL Utility Wattage Label Current Code2 4B 4-Bolt Mounting Bracket 575 RWG Rubber Wildlife Guard 700 SWTB Straight Wire Terminal Block 850 BBL Bubble Level 950 DSC Door Safety Cable 1A CF6 Coastal Paint Finish Notes: 1 Gray, Black, and Dark Bronze standard. Consult factory for other finishes. Accessories* 2 Specified drive current code is the factory set drive current. Field adjustable current selector enables HSSGCM7 House Side Shield, Snap-On* fixture to be changed in the field to adjust light output for local conditions (not available with Fixed Drive 8 CSSGCM Cul-De-Sac Side Shield, Snap-On* Current (FDC) or PCR7-CR option). Consult factory if wattage limits require a special drive current. FSSGCM9 Front Side Shield, Snap-On* 3 Non-field adjustable, fixed drive current. Specify required drive current. Not available with PCR7-CR option. 10 SPB Square Pole Horizontal Arm Bracket 4 Includes current selector that enables field adjustability of light levels. Includes connectors to allow easy RPB10 Round Pole Horizontal Arm Bracket upgrade of wireless dimming via PCR7. Wireless node by others. 10 PTB Pole Top Tenon Horizontal 5 Control-ready wired at factory for wireless none dimming (node by others). Current selector not included Arm Bracket in the fixture. Not able to adjust above specified drive current. 10 PTB2 Pole Top Tenon Horizontal 6 Specify the CF Option for coastal installation. See warranty for details. Arm Bracket (2@180o) 7 Flush mounted house side shield. Shield cuts light off at 1/2 mounting height behind luminaire. WB10 Wall Horizontal Arm Bracket 8 Flush mounted cul-de-sac shield. Shield cuts light off at 1/2 mounting height behind luminaire and 1-1/2 BSK Bird Deterrent Spider Kit mounting height on either side of luminaire. LLPC11 Long-Life Twist Lock Photocontrol 9 Flush mounted front side shield cuts light off at approximately one mounting height in front of luminaire SC Twist Lock Shorting Cap (street side). *Accessories are ordered separately and not to be included in 10 Specify Color (GY, DB, BK) the catalog number. For factory installed HSS, CSS, and FSS 11 Specify MV (120-277V) or HV (347V-480V) consult factory. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 1/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Luminaire Specifications Housing Quality Control Finish Die cast aluminum housing with universal Every luminaire is performance tested before Housing receives a durable, fade-resistant two-bolt slip fitter mounts to 1-1/4â€ to 2â€ and after a 2-hour burn-in period. Assembled polyester powder coat finish with 3.0 mil nominal (1-5/8â€ to 2-3/8â€ O.D.) diameter mast arm. in the USA. thickness. Standard finish tested to withstand One-piece aluminum housing provides passive 5000 hours in salt spray exposure per ASTM B117 heat-sinking of the LEDs and has upper surfaces Optical Systems and Coastal Finish per ASTM G85. Finish meets that shed precipitation. Four-bolt mounting Micro-lens optical systems produce IESNA scribe creepage rating 8 per ASTM D1654. Finish bracket is available. Mounting provisions meet Type 2, Type 3, Type 4, or Type 5 distributions tested 500 hours in UV exposure per ASTM G154 3G vibration per ANSI C136.31-2010 Normal and are fully sealed to maintain an IP66 rating. and meets ASTM D523 gloss retention. Luminaire produces 0% total lumens above 90â° Application, Bridge & Overpass. Mounting has leveling adjustment from Â± 5Â° in 2.5Â° steps. (BUG Rating, U=0). Optional house side shield Listings/Ratings/Labels cuts light off at 1/2 mounting height behind Electrical components are accessed without Luminaires are UL listed for use in wet locations luminaire. Front side shield cuts light off at tools via a high-strength, non-conductive in the United States and Canada. DesignLights approximately one mounting height in front of polycarbonate door with quick-release latches. Consortiumâ„¢ qualified product. Consult DLC the luminaire (street side). Cul-de-sac shield Polycarbonate material meets UL 746C for provides back and side light control for end QPL for Standard and Premium Classification outdoor usage. Available rubber wildlife guard of cul-de-sac applications. All shields are field Listings. International Dark Sky Association listed. (RWG option) conforms to mast arm with no installable without tools. Luminaire is qualified to operate at ambient gaps. temperatures of -40Â°C to 40Â°C. Electrical Light Emitting Diodes Rated life of electrical components is 100,000 Photometry High-flux/High-power white LEDs produce a hours. Uses isolated power supply that is Luminaires photometrics are tested by certified minimum of 90% of initial intensity over 75,000 1-10V dimmable. Power supply is wired with independent testing laboratories in accordance hours of life based on IES TM-21 (L90 â‰¥ 75k quick-disconnect terminals. Power supply with IES LM-79 testing procedures. hours). LEDs are tested in accordance with IES features a minimum power factor of .90 and LM-80 testing procedures. LEDs have correlated <20% Total Harmonic Distortion (THD). EMC Warranty color temperature of 3000K (WW), 4000K meets or exceeds FCC CFR Part 15. Terminal 10-year limited warranty is standard on luminaire (NW), or 5000K (CW) and 70 CRI minimum. block accommodates 6 to 14 gauge wire. Surge and components. LEDs are 100% mercury and lead free. protection complies with IEEE/ANSI C62.41 Vandal Resistance Category C High, 20kV/10kA and ANSI C136.2- Field Adjustability 2015, 20kV/10kA. Housing and optics rated to IK10 LED drive current can be changed in the field Standards to adjust light output for local conditions (not Controls Luminaire complies with: available with Fixed Drive Current (FDC) or 3-Wire photocontrol receptacle is standard. ANSI: C136.2, C136.3, C136.10, C136.13, C136.15, PCR7-CR option). The specified drive current ANSI C136.41 7-wire (PCR7) photocontrol C136.22, C136.31, C136.35, C136.37, C136.41, code will be the factory set drive current. Field receptacle is available. All photocontrol C62.41, C78.377, C82.77 adjustments can be made with the current receptacles have tool-less rotatable bases. Other: FCC 47 CFR, IEC 60598, ROHS II, UL 1449, selector included in the fixture. Field adjustable Wireless control module is provided by others. UL 1598 range shown in performance data table. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 2/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet Performance Data: 3000K (WW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 5770 120 610 58 6700 116 30H 700 68 7620 112 850 82 8800 107 1A 101 10480 104 GCM2 575 73 8780 120 700 88 10230 116 40H 850 107 11960 112 950 121 13040 108 1A 135 14080 104 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Performance Data: 4000K (NW) and 5000K (CW) All data nominal. IES files for all CCTs available at leotek.com. Drive System Delivered Efficacy Field Adjustable Product LED Code Current Code Wattage (W) Lumens (Lm) 1 (Lm/W) Output Range 530 48 6330 132 610 58 7440 128 30H 700 68 8550 126 850 82 9830 120 1A 101 11720 116 GCM2 575 73 9590 131 700 88 11260 128 40H 850 107 13270 124 950 121 14390 119 1A 135 15430 114 Notes: 1 Nominal lumens. Normal tolerance Â± 10% due to factors including distribution type, LED bin variance, and ambient temperatures. Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 3/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: GCM2-40H-MV-WW-2R-BK-850-FFA City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 GreenCobraâ„¢ Midsize LED Street Light GCM H-Series Specification Data Sheet BUG Ratings 3000K (WW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 850 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 40H 850 B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 4000K (NW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B3 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 5000K (CW) Type 2S Type 2R Type 3R Type 4 Type 5 LED Drive BUG BUG BUG BUG BUG Product Code Current Code Rating Rating Rating Rating Rating 530 B2 U0 G1 B1 U0 G1 B2 U0 G2 B2 U0 G1 B3 U0 G1 610 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G1 30H 700 B2 U0 G1 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 850 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 1A B2 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B3 U0 G2 GCM2 575 B2 U0 G2 B2 U0 G2 B2 U0 G2 B2 U0 G2 B3 U0 G2 700 B2 U0 G2 B2 U0 G2 B3 U0 G3 B2 U0 G2 B3 U0 G2 40H 850 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 950 B3 U0 G2 B2 U0 G2 B3 U0 G3 B3 U0 G2 B4 U0 G2 1A B3 U0 G2 B3 U0 G3 B3 U0 G3 B3 U0 G3 B4 U0 G2 Â©2019 Leotek Electronics USA. GCM_H-Series_Spec Sheet_09-17-19. Specifications subject to change without notice. Submitted On: Nov 26, 2019 4/4 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2436/900A350 W/ GFI City of Arlington St Lighting RECEPTACLE Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY A 1 ADD COLOR CALL OUT 12.2.19 M.K. 6' CAT. #; SCLBCHUN2436/900A350/GFCI Quantity 3 .19 PER 1" AWS D.1.1 TUBE THK. 12.75" 1.25" BOLT HOLE 12" BOLT CIRCLE POLE SHAFT - 16 SHARP FLUTE 12.75" CROSS SECTION 9" POLE BASE DIAMETER DETAIL 8 - BASE PLATE 1" LE (4) 1" X 36" X 4" ANCHOR BOLTS WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 SHAFT; 9" x 4.1" x 35' TAPERED (.14"/FT) PO 36" 15 AMP, 120V DUPLEX RECEPTACLE @ 13' ABOVE GRADE WITH WEATHERPROOF, IN USE COVER ARMS TO MATCH EXISTING STAINLESS STEEL 4" PLANT BASKETS DETAIL 8 - BASE PLATE * ALL HARDWARE TO BE STAINLESS STEEL * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING DECORATIVE 2 PC. CLAMP AROUND CAST ALUMINUM BASE COVER; CAT.#: BCHUN2436 FINISHING SPECIFICATIONS SEE DETAIL 4 - BASE COVER DETAIL 36" 24" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: SCLBCHUN2436/900A350/GFCI DATE: R.R. 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO C.O. ARLINGTON, WA DRAWING NUMBER: SHEET NUMBER: Lighting & Design CHANGE DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 1 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Catalog Number: Type: Job Name: BCHUN2032/590A140 City of Arlington St Lighting Distributor: Platt Electric Supply - Bellingham (Bellingham) Notes: SEATAC-WWA19-81534 REV. REV. # REVISION NOTE DATE CHECKED BY KING LUMINAIRE 70W A 1 REMOVE GFCI & ADD COLOR CALL OUT 12.2.19 M.K. MH K199 CAT. #; SCLBCHUN2032/590A140 Quantity 4 3.5" x 3.5" POLE TOP TENON 0.19" PER 0.875" AWS TUBE THK. 10" 1.25" x 1.75" SLOTTED ANCHOR BOLT HOLES 9" BOLT CIRCLE 10" 5.9" POLE BASE DIAMETER 16' LIGHT CENTER LE 14' DETAIL 2 - BASE PLATE 0.75" (4) 0.75" X 24" X 3" ANCHOR BOLTS TAPERED (.14"/FT) POSHAFT - 5.9" x 3.94" x WITH (2) HEX NUTS AND (2) FLAT WASHERS PER BOLT ASTM-A36 FULLY GALVANIZED PER ASTM A123 24" 3" DETAIL 3 - ANCHOR BOLT * ALL HARDWARE TO BE STAINLESS STEEL 32" * ALL WELDS IN COMPLIANCE WITH AWS WELDING CODE * ALL COMPONENTS POWDER COATED RAL-9004 TO MATCH EXISTING FINISHING SPECIFICATIONS 20" SOUTH COAST LIGHTING & DESIGN DRAWN BY: CATALOG #: DATE: R.R. SLCBCHUN2032/590A140 11.26.19 SAN CLEMENTE, CA. South VOICE - 949.276.8850 / FAX - 949.276.8855 CUSTOMER: PROJECT NAME: Coast ORDERS@SOUTHCOASTLIGHTING.COM / WWW.SOUTHCOASTLIGHTING.COM ARLINGTON STREET LIGHTS DUE TO CONTINUING IMPROVEMENTS, SOUTH COAST LIGHTING & DESIGN, INC RESERVES THE RIGHT TO CHANGE C.O. ARLINGTON, WA. DRAWING NUMBER: SHEET NUMBER: Lighting & Design DIMENSIONS, DESIGNS, AND CONSTRUCTION FROM THAT WHICH IS SHOWN IN THIS BROCHURE. CONTACT FACTORY FOR DETAILED ENGINEERING DRAWINGS R-112619-1S 2 OF 2 Submitted On: Nov 26, 2019 1/1 Index Page Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 1"-8 Bolt 1"-8 36" F1554 Grade 55 90 Bent Anchor Nut 1"-8 A563 Grade DH Heavy Hex Washer 1" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 12 36" Notes: BOLT ASSY1" X 36" X 4" F1554GR55 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date Customer SEA-TAC LTG & CONTROLS 11/18/2019 SEATAC-WWA19-81534Type: Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com Submitted by Sea-Tac Lighting & Controls, LLC Bill of Material Item Diam Length Grade / Description 3/4"-10 Bolt 3/4"-10 24" F1554 Grade 55 90 Bent Anchor Nut 3/4"-10 A563 Grade DH Heavy Hex Washer 3/4" F436 Type 1 Notes Finish: Galvanized per ASTM F2329 and A153 7" Hardware is not provided assembled Drawings are not to scale (Bellingham)Supply - BellinghamDistributor: Platt ElectricCity of Arlington St LightingJob Name: Quantity 16 24" Notes: BOLT ASSY3/4" X 24" X 3" F1554GR36 ANCHORCatalog Number: 4" Approved By _________________ Date _____________ Job Name Date SEATAC-WWA19-81534Type: Customer SEA-TAC LTG & CONTROLS 11/18/2019 Portland Bolt & Manufacturing Co. Order No. Quote No. - 3441 NW Guam St. Portland, OR 97210 P: 800-547-6758 Sheet By F: 503-227-4634 1 of 1 KT E: sales@portlandbolt.com www.portlandbolt.com All Acorn Light Fixtures to be 16' H 100A Meter & - Acorn Panel for street All Cobra Head Light - No issue, (1) tree lighting Fixtures to be 32' H deleted to reduce K C 137.30 A conflict 0.1 0.2 0.3 0.3 0.3 0.324' - 7"137.40 " BT 5- E ' 0 S 2 R 0.2 0.3 TOC 137.200.4 0.4 0.5 0.4 A E 0 < R WA WA0 0 R/ 0.2 0.4 0.5 0.8 0.8 0.8 0 0 6/L-6 - 0 WASH 0.3 0.4 TOP 142.00.7 0.8 0.7 0.7 0 142.4DRAIN TOE 138.0 Acorn_1 0.3 0.5 0.8 0.8 0.4 0.8 0 TOP 142.0 0 ILEFA - Cobra Head TOE 138.25 142.4 0.4 0.5 0.7 1.0 0.8 0.9 0 - No issue. TOC 137.25 0 0.4 0.5 0.6137.350.8 0.8 0.7 0 137.45 0 TOP 142.0 0 PAHhfg R/F 0.5 0.6 TOE 138.250.7 0.8 0.8 0.6 0 TOP 142.0 0 TOE 138.25 0.6 0.7 0.9 0.9 0.9 0.7 TOC 137.35 0 0.7 0.9 1.1137.451.2 1.1 0.8 0 1/L-6; S ROOT 137.55 0 0.7 1.0 1.2137.901.4 1.3 0.9 0 IRR TOC 137.45 0 CO /F - Acorn 0.7 1.0 TOP 142.01.3 1.5 1.5 1.1 0 0 TOE 138.25 Cobra138.2 - See description NDmb 0.4 0.7 1.0 1.2 1.5 1.6 1.2 below LNDG J LNDG SEC 0.4 0.7 1.0 1.3 1.4 1.4 1.0 WA WA 142.3 138 137.4 138.80 0.5 0.7 1.0 1.2 1.3 1.2 0.9 ACEBL 137.0 137.55 0.5 0.7 0.9 TOP 142.01.0 1.1 1.0 0.8 < SS TOE 138.25 - To accommodate (2) 0.5 0.6 0.7 0.8 67th AVENUE NE0.9 0.9 0.7 Acorns and Cobra Head in TOC 137.60 138.1 0.4 0.5 0.6 0.8 0.8 0.8 0.6 0 front of two buildings, trees to 00 0 R/F TOP 142.0 0.4 0.5 0.6TOE 138.250.8 0.9 0.8 0.7 0 6/L-6 - the north of Cobra Head will 0 WASHE TOC 137.64 0 DRAINR to shift 3' further north and 0.3 0.5 0.7 0.9 1.2 1.0 1.0 trees to the south of the 0.3 0.5 0.7 1.1 1.1 0.6Acorn_10.9 0 0 Cobra Head to shift 5' further TOC 137.65 0 142.3 0.3 0.5 0.7 TOP 142.01.1 1.1 0.6138 0.9 0 south (per eccosDesign). TOE 138.5 0 PAHhfg 0.4 0.5 0.7 0.9 1.2 1.1 1.0 00 R/F 0.4 0.5 0.7 0.8 0.9 0.9 0.7 0 - Cobra Head 0 TOP 142.0 TOE 138.5 - See description 0.5 0.6 0.7 0.8 0.9 0.9 0.7 0 0 ILEX above. 0.5 0.6 0.8 1.0 1.0 1.0 142.30.7 0 INST TOC 137.86 0 0.5 0.7 1.0 1.2 1.2 1.1 0.8 0 F 138.10 0 0 TOP 1 0.5 0.7 1.1 1.3 1.4 1.3 WA1.0 YH TOE 1 D J TOP 1 0.5 0.7 1.0 1.3 1.5 1.5 1.1 0 TOE 1 Cobra00 0 R/ SEC 0.5 0.7 1.0 1.3 1.5 1.6 1.2 0 0 - Acorn 0.5 0.7 1.1 1.3 1.5 1.4 1.0 0 6/L-6 WAS DRA - See description TOC 137.92 0 0.5 0.8 1.0 1.2 1.3 1.2 0.9 0 above. TOP 142.0 0 0.6 0.7 0.9 1.1 1.1 1.0TOE 138.50.8 0 0 138.25 00 R/F 0.5 0.6 0.8 0.9 1.0 0.9 0.7 00PAHhfg 0 0.5 0.6 0.7 0.9 1.0 TOP 142.00.9 0.8 0 TOE 138.5 0 TOP TOE 0.4 0.5 0.7 0.9 1.2 1.1 1.0 0 138.15WA 0 0.4 0.5 0.7 1.1 1.1 0.8Acorn_10.9 0 TOC 138.05 0 1 0.4 0.6 0.7 1.1138.25 1.1 0.6 0.9 0 0 SEC WA - Cobra Head 0.4 0.5 0.7 0.9 1.2 1.0 1.0 00 138.25 - No issue 0.4 0.5 0.7TOC 138.130.8 0.9 0.9 0.7 0 0 WA 0.5 0.6 0.7 0.8 0.9 0.8 0.6 137.9 TOP 14 TOE 13 0.6 0.7 0.8 1.0 1.0 0.9 0.7 138.1 137.80 WA 138 WA 0.6 0.7 1.0 137.651.1 1.2 1.1 0.8 139.2 LSSSss J 0.5 0.8 1.1 1.3 1.4 1.3 0.8 137.9 138.1 0.5 0.8 1.1 1.3 1.5 1.4 0.9 Cobra 13 0.5 0.7 1.1 1.3 1.6 1.6 0.1 0 0 0 0 J 0.5 0.8 1.1 1.3 1.5 1.4 0.90 TOP 142.0 0 - Acorn TOE 139.25 0 - No issue 0.5 0.8 1.1TOP 142.01.2 1.3 1.2 0.80 SEC TOE 139.0 0 0.5 0.7 0.9 1.1 1.1 1.0 0.70 TOC 138.5 0 R/F 138.6 0 0.5 0.6 0.7 0.8 0.9 0.8 0.6 138.7 0 67th AVENUE NE 0.4 0.5 0.6 0.7 0.8 0.8 0.6 TOP 142.0 TOE 139.25 0.4 0.4 0.6 0.7139.201.0 0.9 0.8 0 R/F 139.10 0 TOC 138.86 01/L-6; S 0.3 0.4 0.5 0.9 0.9 0.7 0.8 Acorn_10ROOT B TOP 142.0 0 TOE 139.25LSSSss 0.2 0.4 0.5 0.9 0.8 0.4 0.8 0 R/F 139.30 0 IL A 139.20 0 0.2 0.3 0.5 0.6 0.9 0.8 0.8 0 TOC 139.06 0 0.2 0.3 0.4 0.5 0.5 0.5 0.5 0 142. 0.1 0.2 0.3 0.3 0.4 0.4 0.3 TO 0.1 0.1 0.2 0.2 0.2 0.2 0.2 TODN 0.1 0.1 0.1 0.1 0.2 0.2 0.1 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 24' - 7" 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.0 FRONT SETBACK 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Luminaire Schedule Symbol Qty Label Lum. Lumens LLF Description 3 Cobra 11960 0.810 GCM2-40H-MV-WW-2R-XX-850 S 4 Acorn_1 4021 0.810 K118-B3AR-V-40(SSL)-1036-3K STREET AND PATHWAY LIGHTING CALCULATIONS SCALE: 1" = 50'-0" Jose Tapia From: Patrik Dylan (eccosDesign) <patrik@eccosdesign.com> Sent: Wednesday, January 8, 2020 10:48 AM To: Jose Tapia Cc: Doug Hofius; Chad Van Ry; Matt Tilton; Ian McKay; Tim Spink; Michael Stevens; Chevy Chase; Jared Underbrink; Joe Galusha Subject: Re: FW: Centennial Park - Submittal #260000-02 & Permit Set Plans Hi Jose The Green Vase Zelkova projects to be 40 feet wide at maturity which means the canopies will eventually touch. That being said, this variety is 'vase shaped' and once it starts to get that wide, it is only at the top. I have attached a link that show the form pretty well. If the light is a pedestrian scale light at 12-14 feet the tree should easily grow up and over the light. Worst case, minor lateral pruning in 15 years, but likely none. If the light is a tall freeway style street light at 30 feet tall than there may be a conflict. In any event the light should be pushed to the middle of the two trees as possible. Also, this is in an urban planting, vs ideal conditions, so I expect there to be a fair amount of 'dwarfing' and think the final width in 20 years may be 25 feet or something like that. I am happy to switch to something more columnar if we want to be safe or if that would accelerate city approval, but if the light is low, I think we will be fine. Fact sheet below. Thx, 1 _________________________ Patrik Dylan, PLA eccosDesign LLC Landscape Architecture and Planning p. 360.419.7400 (forwards to cell) f. 800.508.2017 txt. 360.421.4894 www.eccosdesign.com On Tue, Jan 7, 2020 at 10:37 AM Jose Tapia <JoseT@exxelpacific.com> wrote: Team: See commentâ€™s below from the cityâ€™s engineers regarding the streetlights and landscaping â€“ minor corrections and clarification needed. Be great to see something by end of week so we can resubmit to close these comments out with the city. Thank you, Jose Tapia 2 Acorn Cobra Acorn City of Arlington Community & Economic Development December 16, 2021 Edgecomb Station 5J, LLC 19801 50th Ave W Lynnwood, WA 98036 RE: Project Closeout Project Name: Centennial Park â€“ all phases Project Address: 17207, 17215, 17231, 17313, 17327 67th Ave NE, Arlington, WA 98223 Project No.: PWD-1845, PWD-1860, PWD-2427 Dear Mr. Kilby, The civil construction of the Centennial Park project is nearing completion. Prior to final Certificate of Occupancy issuance and performance bonds #47K009361, #47K009362 and #023217387 release, review and approval of all items related to the project closeout are required. 1. All punch list items shall be inspected and approved. a. Contact the Civil Inspector for punch list items and to arrange for inspections. i. Brian Grieve â€“ bgrieve@arlingtonwa.gov or 360-403-3438. b. It is the responsibility of the Contractor to contact the Public Works Department for water and sewer punch list items and to arrange for inspections. i. Public Works Department: 360-403-3526 2. As-Built plans: a. Plans shall adhere to the Public Works Design and Construction Standard 1-11. b. Shall include all public and private infrastructure, and right of way improvements c. Submit one (1) full paper set along with the electronic format (PDF) d. AutoCAD files will be required with As-Built plan final approval 3. Bills of Sale (attached): a. For the public water system from connection to the meter box(s). b. Shall be submitted with As-Built plans 4. Easement / Right of Way Dedication Review: a. Submittal of legal description and exhibit map by a Professional Engineer or Surveyor licensed in the state of Washington for the following: i. Onsite 20-foot easement for the public water system infrastructure. b. Council approved the Right-of-way dedication on February 26, 2018. In March of 2021, I requested an updated legal description with original Surveyorâ€™s Stamp. 18204 59th Avenue NE, #B - Arlington, WA, 98223 - 360-403-3551 â€“ www.arlingtonwa.gov Currently, the Surveyorâ€™s Stamp has expired and since the document was not recorded prior to that expiration, a licensed Surveyor will need to provide a revised Legal Description and Exhibit Map. 5. Maintenance Bond: a. A 2-year maintenance bond is required. The City of Arlington bond form or assignment of funds form may be used. b. The following shall be indicated on the security: i. All items to be dedicated to the City of Arlington or were repaired due to construction; including but not limited to infrastructure relating to the water system, private and public landscaping, and right-of-way improvements. c. Maintenance Bond Estimated Cost of Construction $565,585.65 x 20% = $113,177.13 Please feel free to reach out should you have any questions at lpeterson@arlingtonwa.gov or 360- 403-3551. 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