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Construction Stormwater General Permit Stormwater Pollution Prevention Plan (SWPPP) for Ramo Smokey Point Self Storage Facility Prepared for: The Washington State Department of Ecology Northwest Regional Office Bellevue, WA 98008-5452 (425) 649-7000 Permittee / Owner Developer Operator / Contractor Ramo Realty & Construction Ramo Realty & Construction N/A 16404 Smokey Point Blvd. 16404 Smokey Point Blvd. Suite 301 Suite 301 Arlington, WA 98223 Arlington, WA 98223 Certified Erosion and Sediment Control Lead (CESCL) Name Organization Contact Phone Number Rob McCabe Cascade Surveying and (360) 435-5551 Engineering, Inc. SWPPP Prepared By Name Organization Contact Phone Number Kevin Dixon Cascade Surveying and (360) 435-5551 Engineering, Inc. SWPPP Preparation Date June, 2016 Project Construction Dates Activity / Phase Start Date End Date LDA Building Permit August, 2017 August, 2018 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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) ............................................5 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 .............................................................6 2.1.3 Element 3: Control Flow Rates...............................................................................7 2.1.4 Element 4: Install Sediment Controls .....................................................................7 2.1.5 Element 5: Stabilize Soils.......................................................................................8 2.1.6 Element 6: Protect Slopes......................................................................................8 2.1.7 Element 7: Protect Drain Inlets...............................................................................9 2.1.8 Element 8: Stabilize Channels and Outlets ............................................................9 2.1.9 Element 9: Control Pollutants ...............................................................................10 2.1.10 Element 10: Control Dewatering ..........................................................................10 2.1.11 Element 11: Maintain BMPs .................................................................................11 2.1.12 Element 12: Manage the Project ..........................................................................11 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs .................................14 3 Pollution Prevention Team .................................................................................................14 4 Monitoring and Sampling Requirements ............................................................................15 4.1 Site Inspection ............................................................................................................15 4.2 Stormwater Quality Sampling ......................................................................................15 4.2.1 Turbidity Sampling ...............................................................................................15 4.2.2 pH Sampling ........................................................................................................17 5 Discharges to 303(d) or Total Maximum Daily Load (TMDL) Waterbodies .........................17 5.1 303(d) Listed Waterbodies ..........................................................................................17 5.2 TMDL Waterbodies .....................................................................................................18 6 Reporting and Record Keeping ..........................................................................................18 6.1 Record Keeping ..........................................................................................................18 6.1.1 Site Log Book ......................................................................................................18 6.1.2 Records Retention ...............................................................................................18 6.1.3 Updating the SWPPP ...........................................................................................19 6.2 Reporting ....................................................................................................................19 6.2.1 Discharge Monitoring Reports ..............................................................................19 6.2.2 Notification of Noncompliance ..............................................................................19 P a g e | 1 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) List of Tables Table 1 – Summary of Site Pollutant Constituents .................................................................4 Table 5 – Management ............................................................................................................12 Table 7 – Team Information ....................................................................................................14 Table 8 – Turbidity Sampling Method ....................................................................................15 Table 9 – pH Sampling Method ..............................................................................................17 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 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 1 Project Information Project/Site Name: Natural Milk LLC Street/Location: 2305 Norman Rd. City: Stanwood State: WA Zip code: 98292 Subdivision: N/A Receiving waterbody: Miller Creek 1.1 Existing Conditions Total acreage (including support activities such as off-site equipment staging yards, material storage areas, borrow areas). Total acreage: 150.76 Disturbed acreage: 2.48 Existing structures: 14 Landscape topography: 0-1% Drainage patterns: Sheet flow over 0-1% slopes. From South to North Existing Vegetation: Pasture Critical Areas (wetlands, streams, high erosion Miller Creek 3000 feet North of area of disturbance risk, steep or difficult to stabilize slopes): List of known impairments for 303(d) listed or Total Maximum Daily Load (TMDL) for the receiving waterbody: Bacteria (4A), and Dissolved Oxygen (5) Table 1 includes a list of suspected and/or known contaminants associated with the construction activity. List all known or suspected contaminants asso ciated with this site in Table 1. Include contaminants previously remediated. Table 1 – Summary of Site Pollutant Constituents Constituent Location Depth Concentration (Pollutant) P a g e | 4 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 1.2 Proposed Construction Activities Description of site development: The proposal is to build extensions for 2 large existing barns for a dairy farm in Stanwood, WA. Each barn will add extensions on the north and south ends, totaling 4 new roof areas. In addition to these new roof areas, concrete sidewalks will be paved adjacent to the north and south faces of the barns. These concrete areas will be partially covered by the new barn extensions. The new impervious area will be 53,042 square feet, and while the replaced impervious area will be 4,410 square feet. Description of construction activities: Construction activities will include site preparation, minimal excavation (for shallow foundations), erecting the 4 barn structures, and pouring of concrete. No demolition will take place. Soil amendment will take place in land surrounding the construction area. Description of site drainage: There are negligible amounts of stormwater that will flow onto the site from Norman Rd. All on- site drainage will sheet flow north into pasture before eventually infiltrating, evaporating, or flowing into Miller Creek 3000 feet north of the construction activities. Description of final stabilization: Disturbed land immediately north and south of the construction area will be stabilized by stockpiling topsoils at the beginning of construction and replacing after construction. Contaminated Site Information: All stormwater will be mitigated via full on-site dispersion per BMP T5.30. The extremely flat grades of the pasture should promote infiltration, evaporation, or sheet flow through 3000 linear feet of pasture before discharging into Miller Creek. 2 Construction Stormwater Best Management Practices (BMPs) Below is a list of the BMPs that have been specifically identifies to control pollutants in stormwater discharges for the Natural Milk barn extension project. Depending on the site, multiple BMPs for each element may be necessary. A full list of BMPs can be found at these two links: o SWMMWW Volume II Chapter 4 Sections 4.1 and 4.2 – https://fortress.wa.gov/ecy/publications/SummaryPages/1410055.html or o SWMMEW Chapter 7 Section 7.3.1 and 7.3.2 – http://www.ecy.wa.gov/biblio/0410076.html P a g e | 5 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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, both in the field and on the plans. In general, natural vegetation and native topsoil shall be retained in an undisturbed state to the maximum extent possible. The BMPs relevant to marking the clearing limits that will be applied for this project include: o Preserving Natural Vegetation (BMP C101) Alternate BMPs for marking clearing limits are included in Appendix B as a quick reference tool for the onsite inspector in the event the BMP(s) listed above are deemed ineffective or inappropriate during construction, the Certified Erosion and Sediment Control Lead will promptly initiate the implementation of one or more of the alternative BMPs listed in Appendix B after the first sign that existing BMPs are ineffective or failing. 2.1.2 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, and wheel washing, street sweeping, and street cleaning shall be employed to prevent sediment from entering state waters. All wash wastewater shall be controlled on site. The BMPs related to establishing construction access that will be used on this project include: o Stabilized Construction Entrance (BMP C105) The existing gravel driveway will be used for a construction entrance and re- graveled as necessary during construction. Until Norman Road is repaired and deemed operational, access from 28th Ave, NW will be planned as the main entry and exit point to the construction site. o Construction Road/Parking Area Stablization (BMP C107) Areas to be used for construction access and parking will be stabilized for vehicle use. Alternate construction access BMPs are included in Appendix B as a quick reference tool for the onsite inspector in the event the BMP(s) listed above are deemed ineffective or inappropriate during construction, the Certified Erosion and Sediment Control Lead will promptly initiate the implementation of one or more of the alternative BMPs listed in Appendix B after the first sign that existing BMPs are ineffective or failing. P a g e | 6 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 2.1.3 Element 3: Control Flow Rates Waterways downstream of the project will be protected by dispersing water on a large pasture 2,950 uphill from the receiving water body. All stormwater that falls on new impervious surfaces will be routed to a series of 8 diffuser tees that will spread the water. Due to the flat topography of the site, all stormwater will either be absorbed by the vegetation in the fields or will evapotranspire. Alternate flow control BMPs are included in Appendix B as a quick reference tool for the onsite inspector in the event the BMP(s) listed above are deemed ineffective or inappropriate during construction, the Certified Erosion and Sediment Control Lead will promptly initiate the implementation of one or more of the alternative BMPs listed in Appendix B after the first sign that existing BMPs are ineffective or failing. In general, discharge rates of stormwater from the site will be controlled where increases in impervious area or soil compaction during construction could lead to downstream erosion, or where necessary to meet local agency stormwater discharge requirements (e.g. discharge to combined sewer systems). 2.1.4 Element 4: Install Sediment Controls All stormwater runoff from disturbed areas shall pass through an appropriate sediment removal BMP before leaving the construction site or prior to being discharged to an infiltration facility. The specific BMPs to be used for controlling sediment on this project include: o Silt Fence (BMP C233) o Vegetated Strip (BMP C234) Alternate sediment control BMPs are included in Appendix B as a quick reference tool for the onsite inspector in the event the BMP(s) listed above are deemed ineffective or inappropriate during construction, the Certified Erosion and Sediment Control Lead will promptly initiate the implementation of one or more of the alternative BMPs listed in Appendix B after the first sign that existing BMPs are ineffective or failing. In addition, sediment will be removed from paved areas in and adjacent to construction work areas manually or using mechanical sweepers, as needed, to minimize tracking of sediments on vehicle tires away from the site and to minimize washoff of sediments from adjacent streets in runoff. Whenever possible, sediment laden water shall be discharged into onsite, relatively level, vegetated areas (BMP C240 paragraph 5, page 4-102). P a g e | 7 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 2.1.5 Element 5: Stabilize Soils West of the Cascade Mountains Crest Number of Days Soils Can Season Dates be Left Exposed During the Dry Season May 1 – September 30 7 days During the Wet Season October 1 – 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. 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: o Temporary and Permanent Seeding (BMP C120) Alternate soil stabilization BMPs are included in Appendix B as a quick reference tool for the onsite inspector in the event the BMP(s) listed above are deemed ineffective or inappropriate during construction, the Certified Erosion and Sediment Control Lead will promptly initiate the implementation of one or more of the alternative BMPs listed in Appendix B after the first sign that existing BMPs are ineffective or failing. The project site is located west of the Cascade Mountain Crest. As such, no soils shall remain exposed and unworked for more than 7 days during the dry season (May 1 to September 30) and 2 days during the wet season (October 1 to April 30). Regardless of the time of year, all soils shall be stabilized at the end of the shift before a holiday or weekend if needed based on weather forecasts. In general, cut and fill slopes will be stabilized as soon as possible and soil stockpiles will be temporarily covered with plastic sheeting. All stockpiled soils shall be stabilized from erosion, protected with sediment trapping measures, and where possible, be located away from storm drain inlets, waterways, and drainage channels. 2.1.6 Element 6: Protect Slopes West of the Cascade Mountains Crest There will be no steep slopes present at the site during construction. All cut and fill slopes will be designed, constructed, and protected in a manner than minimizes erosion. The following specific BMPs will be used to protect slopes for this project: o Temporary and Permanent Seeding (BMP C120) P a g e | 8 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) Alternate slope protection BMPs are included in Appendix B as a quick reference tool for the onsite inspector in the event the BMP(s) listed above are deemed ineffective or inappropriate during construction, the Certified Erosion and Sediment Control Lead will promptly initiate the implementation of one or more of the alternative BMPs listed in Appendix B after the first sign that existing BMPs are ineffective or failing. 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 (BMP C220) will be implemented for all drainage inlets and culverts that could potentially be impacted by sediment-laden runoff on and near the project site. The following inlet protection measures will be applied on this project: o Storm Drain Inlet Protection (BMP C220) All on-site storm drain inlets, if present, will receive an inlet protection sock to prevent the transportation of sediment off site. If the BMP options listed above are deemed ineffective or inappropriate during construction, the Certified Erosion and Sediment Control Lead shall implement one or more of the alternative BMP inlet protection options listed in Appendix B. Inlets are to be inspected weekly at a minimum, and daily during storm events. 2.1.8 Element 8: Stabilize Channels and Outlets West of the Cascade Mountains Crest 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 specific BMPs for channel and outlet stabilization that shall be used on this project include: No stormwater is to be conveyed in channels, therefore no outlet protection is necessary. 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. Stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent streambanks, slopes, and downstream reaches shall be provided at the outlets of all conveyance systems. P a g e | 9 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 2.1.9 Element 9: Control Pollutants All pollutants, including waste materials and demolition debris, that occur onsite shall be handled and disposed of in a manner that does not cause contamination of stormwater. Good housekeeping and preventative measures will be taken to ensure that the site will be kept clean, well organized, and free of debris. If required, BMPs to be implemented to control specific sources of pollutants are discussed below. o Concrete Handling (BMP C155) Collection, handling, and disposal of concrete process water will adhere to the guidelines set forth by BMP C155 to reduce the chance of contaminating waters of the state. The facility does not require a Spill Prevention, Control, and Countermeasure (SPCC) Plan under the Federal regulations of the Clean Water Act (CWA). 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. 2.1.10 Element 10: Control Dewatering There will be no dewatering as part of this construction project. P a g e | 10 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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. 2.1.12 Element 12: Manage the Project The project will be managed based on the following principles: ï‚· Projects will be phased to the maximum extent practicable and seasonal work limitations will be taken into account. ï‚· 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. ï‚· 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. P a g e | 11 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) Table 5 – 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 In addition, project management will incorporate the key components listed below: As this project site is located west of the Cascade Mountain Crest, the project will be managed according to the following key project components: Phasing of Construction  The construction project is being phased to the extent practicable in order to prevent soil erosion, and, to the maximum extent possible, the transport of sediment from the site during construction.  Revegetation of exposed areas and maintenance of that vegetation shall be an integral part of the clearing activities during each phase of construction, per the Scheduling BMP (C 162). Seasonal Work Limitations  From October 1 through April 30, clearing, grading, and other soil disturbing activities shall only be permitted if shown to the satisfaction of the local permitting authority that silt-laden runoff will be prevented from leaving the site through a combination of the following:  Site conditions including existing vegetative coverage, slope, soil type, and proximity to receiving waters; and  Limitations on activities and the extent of disturbed areas; and  Proposed erosion and sediment control measures.  Based on the information provided and/or local weather conditions, the local permitting authority may expand or restrict the seasonal limitation on site disturbance.  The following activities are exempt from the seasonal clearing and grading limitations: P a g e | 12 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com)  Routine maintenance and necessary repair of erosion and sediment control BMPs;  Routine maintenance of public facilities or existing utility structures that do not expose the soil or result in the removal of the vegetative cover to soil; and  Activities where there is 100 percent infiltration of surface water runoff within the site in approved and installed erosion and sediment control facilities. Coordination with Utilities and Other Jurisdictions  Care has been taken to coordinate with utilities, other construction projects, and the local jurisdiction in preparing this SWPPP and scheduling the construction work. Inspection and Monitoring  All BMPs shall be inspected, maintained, and repaired as needed to assure continued performance of their intended function. Site inspections shall be conducted by a person who is knowledgeable in the principles and practices of erosion and sediment control. This person has the necessary skills to:  Assess the site conditions and construction activities that could impact the quality of stormwater, and  Assess the effectiveness of erosion and sediment control measures used to control the quality of stormwater discharges.  A Certified Erosion and Sediment Control Lead shall be on-site or on-call at all times.  Whenever inspection and/or monitoring reveals that the BMPs identified in this SWPPP are inadequate, due to the actual discharge of or potential to discharge a significant amount of any pollutant, appropriate BMPs or design changes shall be implemented as soon as possible. Maintaining 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, P a g e | 13 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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. Scheduling (BMP C162) will be referenced in regards to the sequencing of project construction. 2.1.13 Element 13: Protect Low Impact Development (LID) BMPs Permittees must keep all heavy equipment off existing soils under LID facilities that have been excavated to final grade to retain the infiltration rate of the soils. Areas will be clearly marked off as instructed by Preserving Natural Vegetation (BMP C101). 3 Pollution Prevention Team Table 7 – Team Information Title Name(s) Phone Number Certified Erosion and Kimberly Busteed (360) 435-5551 Sediment Control Lead (CESCL) Resident Engineer Fred Poyner (360) 435-5551 Emergency Ecology Kevin Fitzpatrick (425) 649-7033 Contact Emergency Permittee/ Jeremy Visser (360) 410-8888 Owner Contact Non-Emergency Owner Jeremy Visser (360) 410-8888 Contact Monitoring Personnel Kimberly Busteed (360) 435-5551 Ecology Regional Office Washington Northwest Regional Office (425) 649-7000 * The CESCL representative for this job (CESCL ID#: EF05281407) is not under contract with the owner/contractor to provide this service. The listed CESCL will be the interim CESCL until the owner/contractor hires a CESCL. When a CESCL is selected by the owner/contractor, the SWPPP must be revised to reflect this change and forwarded to the local authority. P a g e | 14 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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: ï‚· A record of the implementation of the SWPPP and other permit requirements ï‚· Site inspections ï‚· Stormwater sampling data 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 – Turbidity Sampling Method Turbidity Meter/Turbidimeter (required for disturbances 5 acres or greater in size) The benchmark for turbidity value is 25 nephelometric turbidity units (NTU) and a transparency less than 33 centimeters. If the discharge’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 P a g e | 15 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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 Region’s Environmental Report Tracking System (ERTS) within 24 hours. ï‚· 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 ï‚· 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 ï‚· 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 ï‚· 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: ï‚· Turbidity is 25 NTU (or lower). ï‚· Transparency is 33 cm (or greater). ï‚· 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 ï‚· The discharge stops or is eliminated. P a g e | 16 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 4.2.2 pH Sampling pH monitoring is required for “Significant concrete work†(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 – pH Sampling Method pH meter pH test kit Wide range pH indicator paper 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? No List the impairment(s): Miller Creek is listed for Bacteria (4A), and Dissolved Oxygen (5) Old Stillaguamish Channel has TMDL for temperature, but only a category 1 P a g e | 17 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 5.2 TMDL Waterbodies Waste Load Allocation for CWSGP discharges: List and describe BMPs: 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. 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: ï‚· A record of the implementation of the SWPPP and other permit requirements ï‚· Site inspections ï‚· 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: ï‚· CSWGP ï‚· Permit Coverage Letter ï‚· SWPPP ï‚· 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. P a g e | 18 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 6.1.3 Updating the SWPPP The SWPPP will be modified if: ï‚· Found ineffective in eliminating or significantly minimizing pollutants in stormwater discharges from the site. ï‚· 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. 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 “No Dischargeâ€. The DMR due date is fifteen (15) days following the end of each calendar month. DMRs will be reported online through Ecology’s WQWebDMR System. To sign up for WQWebDMR go to: http://www.ecy.wa.gov/programs/wq/permits/paris/webdmr.html 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. Specific information to be included in the noncompliance report is found in Special Condition S5.F.3 of the CSWGP. P a g e | 19 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) 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. ï‚· Central Region at (509) 575-2490 for Benton, Chelan, Douglas, Kittitas, Klickitat, Okanogan, or Yakima County ï‚· Eastern Region at (509) 329-3400 for Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, or Whitman County ï‚· Northwest Region at (425) 649-7000 for Island, King, Kitsap, San Juan, Skagit, Snohomish, or Whatcom County ï‚· 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 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 | 20 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) Appendix/Glossary A. Site Map Printed as sheet C 2.00 P a g e | 21 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) B. BMP Detail The following includes a list of possible alternative BMPs for each of the 12 elements not described in the main SWPPP text. This list can be referenced in the event a BMP for a specific element is not functioning as designed and an alternative BMP needs to be implemented. Element #1 – Mark Clearing Limits High Visibility Plastic or Metal Fence (BMP C103) Stake and Wire Fence (BMP C104) Element #2 – Establish Construction Access Element #4 – Install Sediment Controls Triangular Silt Dike (BMP C208) Element #5 – Stabilize Soils Sodding (BMP C124) Element #6 – Protect Slopes Nets and Blankets (BMP C122) P a g e | 22 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) C. Correspondence N/A D. Site Inspection Form Create your own or download Ecology’s template: http://www.ecy.wa.gov/programs/wq/stormwater/construction/index.html Select Permit, Forms and Application to find the link to the Construction Stormwater Site Inspection Form. E. Construction Stormwater General Permit (CSWGP) Download the CSWGP: http://www.ecy.wa.gov/programs/wq/stormwater/construction/index.html F. 303(d) List Waterbodies / TMDL Waterbodies Information N/A G. Contaminated Site Information N/A H. Engineering Calculations See Drainage Report for engineering Calculations P a g e | 23 You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) CITY OF ARLINGTON RAMO CONSTRUCTION CITY FILE NO.: PORTION OF SW 1/4, NW 1/4, SEC. 28, T. 31 N., R. 05 E., W.M. CASCADE SURVEYING & ENGINEERING, INC. NG RI EE N GI N 0 E 7 & 9 1 G NI E Y C E N V I R S U S E D ACSAC DATE DATE DATE DESIGNED DRAWN CHECKED FIELD BOOK CITY FILE NO.: CITY OF ARLINGTON RAMO CONSTRUCTION THE PARK SELF STORAGE DOWNS STREAM MAP 1 OF 1 # 20683 U:\20683\Drainage\Drainage Report Appendix\Downstream analysis.dwg, 1/19/2017 3:20:44 PM REVIEW COMMENT SUMMARY AND RESOLUTION SHEET Submittal: The Park Self Storage CODE A. Incorporated B. Open/Under Review Agency/Company/Reviewer C. Evaluated/Not Incorporated D. Beyond Scope/Not Evaluated Robert O'Brien E. Clarify or discuss Submittal Date: 2/20/2017 X. Comment closed Comment Final Dwg No. Specification Correction Disposition Item No. Reviewer or Reference Review Comment Response Verification Page No. Chapter/Section Code (initials) 1 O'Brien Geotest Report The figure shows the approximate groundwater table at 114.15. Page 3 of 18 TP1 and TP2 (geotest report figure 5) shows an approximate groundwater elevation of 113.5. Please confirm groundwater elevations. 2 O'Brien Drainage Report The figure shows the approximate groundwater table at 114.15. Page 14 TP1 and TP2 (geotest report figure 5) shows an approximate groundwater elevation of 113.5. Please confirm groundwater elevations. 3 O'Brien WWHM Report The Geotest report recommends infiltration rate of 0.55 in/hr for 2 feet of Page 6 groundwater separation, and 0.74 in/hr for 3 feet of separation. WWHM Geotest Report inputs used 0.81 in/hr. Update WWHM inputs to reflect geotech (page 16 of 18) recommendation. 4 O'Brien WWHM Report The WWHM inputs show a riser height of 1.85 feet for the infiltration facility. Page 6 The mounding analysis assumes 1 foot of water storage. Update mounding Geotest Report analysis to final design limits and show infiltration is possible and facility does (page 15 of 18) not discharge directly to existing ditch (western project limits) by interflow among gravel aggregate. 5 O'Brien Page 7 What elevation and where is overflow facility described on page 7, how does Drainage Plan this overflow location relate to the storage facility height of 1.85 feet? If the C4.0 facility overflow is being provided at drainage structure #10, then it appears the overflow elevation is at 118.00, which is the elevations of the 12" diameter pipe leaving the structure. The available storage of the facility would then be 0.85 feet instead of 1.85 feet shown in WWHM. 6 O'Brien Drainage Plan C4.0 2012 DOE Volume III If using soil for treatment with infiltration facility, a pre-settling basin or a basic Page 3-59 treatment BMP is required. DATE (MM/DD/YYYY) CERTIFICATE OF LIABILITY INSURANCE 6/6/2017 THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED REPRESENTATIVE OR PRODUCER, AND THE CERTIFICATE HOLDER. IMPORTANT: If the certificate holder is an ADDITIONAL INSURED, the policy(ies) must be endorsed. If SUBROGATION IS WAIVED, subject to the terms and conditions of the policy, certain policies may require an endorsement. A statement on this certificate does not confer rights to the certificate holder in lieu of such endorsement(s). CONTACT PRODUCER Kim Grahn NAME: Shipley & Pease Insurance PHONE (206)519-5371 FAX (503)282-3345 (A/C, No, Ext): (A/C, No): P O Box 928 E-MAIL kim@shipleyins.com ADDRESS: INSURER(S)AFFORDINGCOVERAGE NAIC # Woodinville WA 98072 INSURER A :Western National Insurance Co 15377 INSURED INSURER B : Ramo Development, LLC INSURER C : 24601 99th Ave NE INSURER D : INSURER E : Arlington WA 98223 INSURER F : COVERAGES CERTIFICATE NUMBER:CL1731000238 REVISIONNUMBER: THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED. NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS, EXCLUSIONS AND CONDITIONS OF SUCH POLICIES. LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. INSR ADDLSUBR POLICY EFF POLICY EXP LTR TYPE OF INSURANCE INSD WVD POLICY NUMBER (MM/DD/YYYY) (MM/DD/YYYY) LIMITS X COMMERCIAL GENERAL LIABILITY EACHOCCURRENCE $ 1,000,000 DAMAGE TO RENTED 100,000 A CLAIMS-MADE X OCCUR PREMISES(Eaoccurrence) $ CPP1131008 12/28/2016 12/28/2017 MEDEXP(Anyoneperson) $ 5,000 PERSONAL&ADVINJURY $ 1,000,000 GEN'L AGGREGATE LIMIT APPLIES PER: GENERAL AGGREGATE $ 2,000,000 X POLICY PRO-JECT LOC PRODUCTS - COMP/OP AGG $ 2,000,000 OTHER: Employee Benefits $ 1,000,000 COMBINED SINGLE LIMIT AUTOMOBILE LIABILITY $ 1,000,000 (Eaaccident) A ANY AUTO BODILYINJURY(Perperson) $ ALLOWNED X SCHEDULED CPP1130957 12/28/2016 12/28/2017 BODILYINJURY(Peraccident) $ AUTOS AUTOS NON-OWNED PROPERTY DAMAGE X HIRED AUTOS X AUTOS (Peraccident) $ $ X UMBRELLA LIAB X OCCUR EACHOCCURRENCE $ 1,000,000 A EXCESS LIAB CLAIMS-MADE AGGREGATE $ 1,000,000 DED X RETENTION$ 10,000 UMB1021573 12/28/2016 12/28/2017 $ XXXXXXXXXXXXXXXXWORKERS COMPENSATION PER OTH- STATUTE ER XXXAND EMPLOYERS' LIABILITY Y / N ANY PROPRIETOR/PARTNER/EXECUTIVE E.L.EACHACCIDENT $ 1,000,000 A OFFICER/MEMBER EXCLUDED? N / A (Mandatory in NH) CPP1131008 12/28/2016 12/28/2017 E.L. DISEASE - EA EMPLOYEE $ 1,000,000 If yes,describeunder DESCRIPTION OF OPERATIONS below WA Stop Gap E.L. DISEASE - POLICY LIMIT $ 1,000,000 DESCRIPTION OF OPERATIONS / LOCATIONS / VEHICLES (ACORD 101, Additional Remarks Schedule, may be attached if more space is required) Additional insured per form WNGL39 07/15 attached, which extends Waiver of Subrogation wording. CERTIFICATE HOLDER CANCELLATION lpeterson@arlingtonwa.gov SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE Citty of Arlington THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN Luana Peterson ACCORDANCE WITH THE POLICY PROVISIONS. 18204 59th Ave NE Arlington, WA 98223 AUTHORIZED REPRESENTATIVE Robert Graham/KG © 1988-2014 ACORD CORPORATION. All rights reserved. ACORD 25 (2014/01) The ACORD name and logo are registeredmarks of ACORD INS025(201401) x24" #4 x12" AT 36" OC. COORD. 9 1/2" x 1 1/2" NOTCH WITH FORGE BUILDING TE 8" 1'-6"MIN. NOTE: 1. For information not shown, see detail 1/S6.01 & 2/S6.01. NO SCALE LESK 1 JOB#: 174300 CONCRETE STEM WALL AT PROJECT: Park Self Storage PERIMETER AND OPENINGS 201 N. Maple Grove Ste 100 Las Vegas, NV DATE: 09/28/2017 Boise, ID 83704 Denver, CO 09-28-18 DRAWN/REVIEWED: DS Phone (208) 342-7168 REF: 1/S6.01 & 2/S6.01 Fax (208) 342-3079 EXP. 5/28/2020 ! "#$%&'#()*+&%,# -. /! 0%1+0#%(2*345+67*&89*2+6 -. /-::;; <1+'#3$+26*(=>?@A -. /BCBD BE &(26,*+6?FG A C / ; / 0%(H"I+6*3 J / A<<KAKKK L . 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