Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
Exhibit 16 - Wetland and Stream Mitigation Plan
FINAL MITIGATION PLAN LINDSAY ANNEXATION REVISED JANUARY 2026 Soundview �7 Consultants Environmental Assessment Planning+Land Use Solutions FINAL MITIGATION PLAN LINDSAY ANNEXATION PREPARED JUNE 20,2025 REVISED JANUARY 16,2026 PROJECT LOCATION 8014,8228,8210,AND 8326172ND STREET NORTHEAST ARLINGTON,WASHINGTON 98223 PREPARED FOR MJS INVESTORS 1140 Southeast 8`'Street, Suite 200 BELLEVUE,WASHINGTON 98004 PREPARED BY SOUNDVIEW CONSULTANTS LLC 2907 HARBORVIEW DRIVE GIG HARBOR,WASHINGTON 98335 (253) 514-8952 ,�7 Soundview 7- Consultants Environmental Assessment Planning+Land Use Solutions Executive Summary Soundview Consultants LLC (SVC) has been assisting MJS Investors (Applicant) with a conceptual mitigation plan for the proposed residential redevelopment of a 32.28-acre site located at 8014, 8228, 8210, and 8326 172nd Street Northeast within the City of Arlington, Washington. The Proposed Project Area (PPA; here forth referred to as the subject property) consists of five tax parcels situated in the Northeast 'A of Section 26, Township 31 North, Range 05 East, W.M. (Snohomish County Tax Parcel Numbers 31052500200600, 31052600100100, 31052600100200, 31052600102200, and 31052600102300). SVC investigated the subject property and publicly accessible areas within 300 feet of the project area for potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species in December of 2022 and April of 2024. Using current methodology,the site identified four potentially- regulated wetlands onsite (Wetlands A — D) and one stream (Stream Z) on the subject property. Additionally,one offsite wetland (Wetland 1)was identified offsite to the west of the subject property. Arlington Municipal Code (AMC) 20.93.800 establishes wetland buffers based on wetland rating, and wetland water quality and/or habitat score. Wetlands A and D are classified as Category IV wetlands and are subject to a standard 40-foot buffer regardless of habitat score per AMC 20.93.830 Table 20.93-4 with the required use of minimization measures outlined in AMC Table 20.93-5.Wetlands B, C,and 1 are Category III wetlands with moderate habitat scores of(6 or 7) and are subject to a standard 110-foot buffer per AMC 20.93.830 Table 20.93-4 with the required implementation of a relatively undisturbed, 1 00-foot wide protected corridor between the wetlands and other areas specified in AMC 20.93.830(1)(A) and use of minimization measures. Stream Z is a Type Ns (non-fish habitat, seasonal) water per AMC 20.93.700 and is subject to a standard 50-foot buffer per AMC 20.93.730 Table 20.93- 3. In addition, a 15-foot structure setback is required from the edge of any wetland or stream buffers per AMC 20.93.340. No other potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species were identified within 300 feet of the subject property. The Applicant proposes residential redevelopment of the subject property to include 167 single-family residences, internal site access and parking, open space areas, utilities, and stormwater facilities including several stormwater detention ponds that will disperse treated runoff to the outer portion of the wetland and stream buffer areas onsite to maintain existing site drainage patterns and hydrology. The project was carefully designed to minimize impacts to critical areas to the greatest extent feasible by fully utilizing all developable upland areas onsite. However, due to the odd shape of the subject property which constrains the orientation of development,the spatial requirements needed to provide a high-density residential development and associated infrastructure consistent with City development standards and the high capacity residential zoning designation of the site, the extent of encumbrance by the identified critical areas and associated buffers throughout the site, complete avoidance is not feasible. In order to meet density requirements and standards for open space, site access,utilities,and stormwater facilities associated with the proposed residential development, the proposed project requires the necessary, unavoidable complete fill of Wetland D, as well as the partial fill of Wetlands A and C. Additionally, permanent and temporary impacts to the buffers of Wetlands A, B, and C, offsite Wetland 1,and Stream Z are necessary and unavoidable in order to provide pedestrian walking trails and stormwater dispersion outfalls/trenches necessary to maintain existing site drainage patterns and hydrology.All temporary impacts will be fully restored immediately after construction is complete. Direct impacts to Wetlands A, C, and D, indirect impacts to Wetlands A and C, and permanent impacts to the onsite wetland and stream buffer areas will be compensated through a combination of onsite,in-kind wetland creation and enhancement and buffer creation and enhancement actions. The 2419.0002—Lindsay Annexation i Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 proposed onsite mitigation actions aim to establish higher functioning wetland habitat, improve screening and habitat between the identified critical areas and the proposed development, and,where feasible, establish protected corridors maintaining connectivity accessibility between onsite critical areas. It is anticipated that these measures will achieve a net positive ecological benefit onsite and in the greater Snohomish River watershed, and exceed the mitigation ratios establish in AMC 20.93.840(d) Table 20.93-7 to ensure no net loss of wetland or critical area buffer functions onsite. See Chapter 3 for further details and analysis. The Applicant will submit any proposed substantial changes to the project or mitigation plan, such as significant changes to the amount, location, or design of mitigation; the goals, benchmarks, or performance standards; the monitoring or adaptive management provisions, to WSDOE for review and approval prior to implementation. Minor changes, such as alterations to the species listed in the planting plan,will be documented in the as-built report. The table below identifies the onsite critical areas and summarizes the potential regulatory status by local, state, and federal agencies. Regulated Regulated Regulated Feature Name Size (Onsite) Category' Under KCC Under RCW Under Clean Chapter 11.06 90.48 Water Act Wetland A 22,644 SF IV Yes Yes Likely Wetland B 45,715 SF III Yes Yes Likely Wetland C 29,723 SF III Yes Yes Likely Wetland D 117 SF IV Yes Yes Not Likely Wetland 1 NA III Yes Yes Likely Stream Z —160 linear Type Ns Yes Yes Likely feet 1. Washington State Department of Ecology(WSDOE)wetland rating system(Hruby and Yahnke 2023)per AMC 20.93.800 and AMC 20.93.730 The table below summarizes the proposed critical area impacts. FlOrm Impact Type I Total Impact Area 10 Direct Permanent Wetland Fill 11,399 SF Indirect Permanent Wetland Impacts 12,003 SF Permanent Buffer Impacts 2,467 SF Temporary Buffer Impacts 61,374 SF The table below summarizes the planned mitigation actions. F-Ir Mitigation Type IF Mitigation Area Vetland Mitigation Wetland Creation 47,347 SF Wetland Restoration 20,455 SF 2419.0002—Lindsay Annexation ii Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 AILMitigation Type IL Mitigation Area Wetland Enhancement 8,626 SF Wetland as Buffer Enhancement 12,003 SF Bu�fer Mitigation Buffer Creation 9,164 SF Buffer Enhancement 61,329 SF 63,216 SF Buffer Restoration (includes buffer area modified following wetland creation actions) 2419.0002—Lindsay Annexation iii Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Site Map vwm4m-P 7ASTREET NE 4, T7 ILI Fj T,.A9YI i /WETLAND GTEOONYN LOCAMN 40i Bkomm I"SF m. R,W� WETLAND OFFWM VVerLANDC SBEET INDEX t U1.0 MT�- .,Pwmms UZO MAN&WAM 100 P PCVO-m%rm MAN&W1C.AMN VVETLAND A • ZNT 7 U4.0 0 22- 'WET' r L�AND B CT I v GKkFHIC SCAT E PLANT LEGFSD INCaSS 2.kw%m BY IAND mc,"OOLCOM.M. MOT 3. �10�LAO J TA fiTREMICBIfERLFE —MR 2419.0002 Lindsay Annexation iv Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Table of Contents Chapter1. Existing Conditions ......................................................................................................................1 1.1 Critical Area Findings.............................................................................................................................2 1.2 Regulatory Considerations.....................................................................................................................2 Chapter2. Proposed Project...........................................................................................................................7 2.1 Purpose and Need...................................................................................................................................7 2.2 Project Description.................................................................................................................................7 2.3 Site Planning............................................................................................................................................7 2.4 Description of Impacts........................................................................................................................11 2.5 Authorizations.......................................................................................................................................12 Chapter3. Final Mitigation Plan....................................................................................................................13 3.1 Mitigation Strategy................................................................................................................................13 3.2 Approach and Best Management Practices.......................................................................................16 3.3 Goals, Objectives, and Performance Standards...............................................................................17 3.4 Plant Materials and Installation...........................................................................................................20 3.5 Maintenance &Monitoring Plan........................................................................................................22 3.6 Reporting................................................................................................................................................23 3.7 Contingency Plan and Long Term Management.............................................................................23 3.8 Critical Area Protective Measures.......................................................................................................24 3.9 Financial Assurances.............................................................................................................................24 Chapter4. Closure..........................................................................................................................................25 Chapter5. References ....................................................................................................................................26 Figures Figure1. Subject Property................................................................................................................................1 Tables Table1. Wetland Buffer Summary..................................................................................................................3 Table 2. Required Measures to Minimize Impacts to Wetlands .................................................................3 Table3. Stream Buffer Summary. ...................................................................................................................4 Table 4. Summary of Wetland Impacts........................................................................................................12 Table 5. Compensatory Wetland Mitigation Summary for Wetland Impacts.........................................14 2419.0002—Lindsay Annexation iv Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Appendices Appendix A—Existing Conditions and Site Plans Appendix B- Grading Plans Appendix C— Qualifications 2419.0002—Lindsay Annexation v Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Chapter 1. Existing Conditions Soundview Consultants LLC (SVC) has been assisting MJS Investors (Applicant) with a conceptual mitigation plan for the proposed residential redevelopment of a 32.28-acre site located at 8014,82288, 8210, and 8326 172nd Street Northeast within the City of Arlington, Washington (Figure 1). The subject property consists of five tax parcels situated in the Northeast '/4 of Section 26,Township 31 North, Range 05 East, W.M. (Snohomish County Tax Parcel Numbers 31052500200600, 31052600100100, 31052600100200, 31052600102200, and 31052600102300). The subject property is located within a rural residential setting within the City of Arlington and is partially developed with four single-family residences, associated infrastructure,gravel driveways, and garages. Much of the site consists of open fields, lawn, and small pockets of deciduous trees and shrubs,with a larger forested area located on the southeast area of the subject property. The subject property abuts 172nd Street Northeast to the north, a single-family residence and undeveloped land to the east, undeveloped forested land and chicken farm facilities to the south, and single-family residences on large lots to the west. Topography on the site generally slopes from southeast to northwest with elevations ranging from approximately 408 feet above mean sea level (amsl) to 360 feet amsl. The subject property is within the Snohomish River Watershed(Water Resources Inventory Area 7). Figure 1. Subject Property. #P LL 1 M Subject Property '�� + Location IL AV— A. t _ "l ► •i� Ala 4/22/2024.9:58:08 AM 1:7,500 0 AS 470 9400 Subject Area 0 70 140 280 m M9vM Somuvien C.unsull�IRy 2419.0002—Lindsay Annexation I Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 1.1 Critical Area Findings SVC investigated the subject property and publicly accessible areas within 300 feet of the project area for potentially-regulated wetlands, waterbodies, fish and wildlife habitat, and/or priority species in December of 2022 and April of 2024. Using current methodology,the site identified four potentially- regulated wetlands onsite (Wetlands A — D) and one stream (Stream Z) on the subject property. Additionally, one offsite wetland (Wetland 1) was identified offsite to the west within 300 feet of the subject property. AMC 20.93.800(a) has adopted the current wetland rating system for western Washington (Hruby and Yahnke 2023). Category IV wetlands have the lowest levels of functions (scoring fewer than 16 points) and are often heavily disturbed.These are wetlands that functions may be replaced, or in some cases improved. Category III wetlands include wetlands with moderate level of functions (scoring between 16 and 19 points) that have generally been disturbed in some ways and are often less diverse or more isolated in the landscape than Category II wetlands. Wetlands A and D are classified as Category IV wetlands,and Wetlands B,C,and 1 are classified as Category III wetlands with moderate habitat scores ranging from 6 to 7 points. Stream Z is a classified as a Type Ns (non- fish habitat, seasonal) water. No other potentially-regulated wetlands,waterbodies, fish and wildlife habitat,and/or priority species were identified within 300 feet of the subject property during the site investigations. Critical area findings are described in a 1Vetland and Fish and Wildlife HabitatAssessment.•Lindsay Annexation report by SVC dated June 21,2024. 1.2 Regulatory Considerations 1.2.1 Local Buffer Requirements Per AMC 20.93.830(a) Table 20.93-4,wetland buffers are based on wetland category and the level of habitat functions. Category IV wetlands are subject to a standard 40-foot buffer regardless of habitat score. Category III wetlands with moderate habitat scores ranging from 6 to 7 points are subject to standard 110-foot buffer. Table 1 below summarize the standard buffer widths for the identified wetlands. Per AMC 20.93.830(1), for wetlands with habitat scores of 6 points or more, these buffer widths presume the implementation of a relatively undisturbed vegetated corridor at least 100 feet wide protected between the wetland and: i. A legally protected, relatively undisturbed and vegetated area (e.g., priority habitats, compensatory mitigation sites, wildlife areas/refuges, national, county, and state parks where they have habitat management plans with areas designated as natural,natural forest, or natural area preserve); ii. An area that is the site of a watershed project identified within, and full consistent with a watershed plan as defined by RCW 89.08.460; iii. An area where development is prohibited according to the provisions of the local shoreline master program; or iv. An area with equivalent habitat quality that has conservation status in perpetuity, in consultation with WDFW. Additionally, for all wetlands, regardless of category, standard buffer widths require the implementation of minimization measures described in AMC 20.93.830(a) Table 20.93-5 (Table 2 below). An Existing Conditions Exhibit is provided on Sheet 1 of Appendix A. 2419.0002—Lindsay Annexation 2 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Table 1. Wetland Buffer Summary. Wetland Category Habitat Score Standard Buffer Width (Feet) A IV 6 40 B III 7 110 C III 6 110 D IV 5 40 1 III 6 110 Table 2. Re uired Measures to Minimize Im acts to Wetlands Examples of Activities and Disturbance Required Measures to Minimize Impacts Uses that Cause Disturbances • Direct lights away from critical areas and buffers • Parking lots,warehouses,Lights manufacturing,residential, • Day use only regulations preventing the need for lights parks • Timer on lights • Locate activity that generates noise away from wetlands • If warranted,enhance existing buffer with native • Manufacturing vegetation planting adjacent to noise source Noise • For activities that generate relatively continuous, • Residential potentially disruptive noise, such as certain heavy industry or mining establish an additional 10 ft heavily vegetated buffer strip • Seasonal limitations on hours of operation • Parking lots,roads, • Route all new,untreated runoff away from manufacturing,residential wetland while ensuring wetland is not dewatered Toxic runoff* areas,application of • Establish covenants limiting use of pesticides agricultural pesticides, within 150 feet of critical area or buffer landscaping • Apply integrated pest management • Retrofit stormwater detention and treatment for • Parking lots,roads, roads and existing adjacent development Stormwater manufacturing,residential • Prevent channelized flow from lawns that directly runoff areas, commercial, enters the buffer landscaping • Use Low Intensity Development technique • Impermeable surfaces • Infiltrate or treat, detain, and disperse into buffer Change in • Lawns new runoff from impervious surfaces and new water regime • Tilling lawns • Forest and forest duff • Retain minimum forest and forest duff removal • Use privacy fencing; plant dense vegetation to Pets and delineate buffer edge and to discourage human • Residential areas and parks disturbance using vegetation appropriate for the disturbance ecoregion • Place wetland and its buffer in a separate tract or protect with a conservation easement Dust • Construction sites • Use best management practices to control dust 2419.0002—Lindsay Annexation 3 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Examples of Activities and Disturbance Uses that Cause Disturbances Required Measures to Minimize Impacts Disruption of • Roads,residential, • Maintain connection to offsite areas that are undisturbed corridors or commercial,manufacturing,connections landscaping, stormwater • Restore corridors or connections to offsite habitats by replanting *These examples are not necessarily adequate for minimizing toxic runoff if threatened or endangered species are present at the site. In order to adopt the standard buffer widths described in AMC 20.93.830(a) Table 20.93-4, the greatest light and noise generating sources (such as internal access roads) associated with the proposed development will be located interior to the development away from critical areas to the greatest extent feasible. All new runoff will be collected in stormwater detention ponds and treated prior to being dispersed to wetland and stream buffers to retain existing site drainage patterns and hydrology. Protected corridors will be established where feasible onsite,maintaining accessibility between higher functioning habitat areas for local wildlife.Furthermore,critical areas signs and fencing will be installed along the boundaries of critical areas buffers to prevent intrusion. Stream Z onsite is classified as a Type Ns (non-fish habitat,seasonal)water.Per AMC 20.93.730 Table 20.93-3, Type Ns waters are subject to a standard 50-foot buffer. Table 3 below summarizes the standard buffer width for Stream Z. Table 3. Stream Buffer Summary. Stream Typing Standard Buffer Width (feet) Z Type Ns 50 Per AMC 20.93.730(a), stream buffer widths shall be maintained on both sides of the stream channel and all existing native vegetation shall be preserved. The existing buffer areas associated with Stream Z onsite are degraded due to mowing, and the encroachment of non-native invasive species. Per AMC 20.93.340 an additional 15-foot building setback is required from the edge of any critical area buffer. 1.2.2 State Regulations All onsite wetlands and streams are regulated as surface waters of the state by the WSDOE under the Revised Code of Washington (RCW) 90.48. 1.2.3 Federal Regulations On January 18,2023,USACE and EPA published a revised definition of"Waters of the United States" (USACE and EPA, 2023a). The revised rule became effective on March 20, 2023. On May 25, 2023, the U.S. Supreme Court issued a decision affecting the definition of Waters of the United States, or "WOTUS",in Sackett Et Ux. V Environmental Protection Agency EtAI. On August 29,2023,the US EPA and USACE issued a final rule to amend the final"Revised Definition of Waters of the United States"' rule. The amendment conforms the definition of"Waters of the United States" to the U.S. Supreme Court's decision in the Sackett Et Ux. V Environmental Protection Agency Et Al case. 2419.0002—Lindsay Annexation 4 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 The 2023 revised and amended definition of Waters of the United States defines"adjacent"as"having a continuous surface connection." The revised and amended definition of "Waters of the United States"is as follows: (a) Waters of the United States means.- (1) Wlaters which are. (i) Currently used, or were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide; (ii) The territorial seas;or(iii)Interstate waters; (2)Impoundments of waters otherwise defined as waters of the United States under this definition, other than impoundments of waters identified underparagraph (a)(5) of this section; (3) Tributaries of waters identified inparagraph (a)(1) or (2) of this section that are relatively permanent, standing or continuously flowing bodies of water; (4) Wletlands adjacent to the following waters: (i) Wlaters identified in paragraph (a)(9) of this section;or(ii) Kelatively permanent,standing or continuously flowing bodies of water identified in paragraph(a)(2)or(a)(3) of this section and with a continuous surface connection to those waters; (5)Intrastate lakes and ponds not identified in paragraphs(a)(1)through (4) of this section that are relatively permanent, standing or continuously flowing bodies of water with a continuous surface connection to the waters identified in paragraph (a)(1) or(a)(3) of this section; (b) The following are not "waters of the United States"even where they otherwise meet the terms of paragraphs (a)(2) through (5) of this section: (1) Wlaste treatment ystems, including treatmentponds or lagoons, designed to meet the requirements of the Clean WlaterAct; (2)Prior converted cropland designated by the Secretary of Agriculture. The exclusion would cease upon a change of use, which means that the area is no longer available for the production of agricultural commodities. Notwithstanding the determination of an area's status asprior converted cropland by any other Federal agency, for the purposes of the Clean VaterAct, the final authority regarding Clean VaterActjurisdiction remains with EPA; (3) Ditches (including roadside ditches) excavated wholly in and draining only dry land and that do not carry a relatively permanent flow of water; (4)Artificially irrigated areas that would revert to dry land if the irrigation ceased; (5)Artificial lakes orponds created by excavating or diking dry land to collect and retain water and which are used exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing (6)Artificial reflecting or swimming pools or other small ornamental bodies of water created by excavating or diking dry land to retain water for primarily aesthetic reasons; (7) Vate filled depressions created in dry land incidental to construction activity and pits excavated in dry land for the purpose of obtaining fall, sand, or gravel unless and until the construction or excavation operation is abandoned and the resulting body of water meets the definition of waters of the United States;and 2419.0002—Lindsay Annexation 5 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 (8) Swales and erosional features (e.g.,gullies, small wasbes) cbaracteri.Zed by loan volume, infrequent, or short duration flox. Stream Z is a tributary to Edgecomb Creek, which connects into Middle Fork Quilceda Creek, a tributary to the main stem of Quilceda Creek which outlets directly to the Puget Sound, a regulated Water of the United States (WOTUS). As such, Stream Z is regulated as a WOTUS under Category (a)(3) above. Wetlands A - C and offsite Wetland 1 all share hydrological connections to the onsite ditches that outlet into Edgecomb Creek offsite to the west; thus Wetlands A - C and Wetland 1 are likely federally regulated wetlands under the CWA, and as such are likely regulated as WOTUS under category (a)(4).Wetland D is a small,isolated depression that lacks and outlet and therefore does not share a surface water connection with potential WOTUS and does not meet the criteria of an adjacent wetland under category (a)(4). 2419.0002—Lindsay Annexation 6 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Chapter 2. Proposed Project 2.1 Purpose and Need The purpose of the proposed project is to provide additional housing units within the City of Arlington to help alleviate the shortage of residences in the greater Seattle area. 2.2 Project Description The Applicant proposes residential redevelopment of the subject property to include 167 single-family residences, internal site access and parking, open space areas, utilities, and stormwater facilities including several stormwater detention ponds that will disperse treated runoff to the outer portion of the wetland and stream buffer areas onsite to maintain existing site drainage patterns and hydrology. The proposed residential development requires direct impacts to Wetland D and direct and indirect impacts to Wetlands A and C in order to provide a high-density residential development and associated infrastructure consistent with City development standards and the high capacity residential site zoning. Additionally, temporary and permanent impacts to the buffers of Wetlands A, B, and C, offsite Wetland 1, and Stream Z are required to support the construction of a walking trail and stormwater dispersion outfalls/trenches at a location that maintains existing site drainage patterns and hydrology. The project proposes to mitigate for these impacts through a combination of onsite wetland creation and enhancement, buffer creation, and restoration of all temporary impacts. 2.3 Site Planning 2.3.1 Mitigation Sequencing Per AMC 20.93.740 and 20.93.840,adequate mitigation must be provided in order to avoid significant environmental impacts for activities where impacts to wetlands, streams, and/or associated buffers are unavoidable. What is considered adequate mitigation will depend on the nature and magnitude of the impact. According to AMC 20.93.100, "mitigation" is defined as avoiding, minimizing, or compensating for adverse critical area impacts in the following sequential order of preference: a. Avoiding the impact altogether by not taking a certain action orparts of actions. The project was carefully designed to minimize impacts to critical areas to the greatest extent feasible by fully utilizing all developable upland areas onsite. However, due to the odd shape of the subject property which constrains the orientation of development, the spatial requirements needed to provide a high-density residential development and associated infrastructure consistent with City development standards and the high capacity residential zoning designation of the site, the extent of encumbrance by the identified critical areas and associated buffers throughout the site, complete avoidance is not feasible. In order to meet density requirements and standards for open space, site access, utilities, and stormwater facilities associated with the proposed residential development, the proposed project requires the necessary,unavoidable complete fill of Wetland D, as well as the partial fill of Wetlands A and C. Additionally, permanent and temporary impacts to the buffers of Wetlands A, B, and C, offsite Wetland 1, and Stream Z are necessary and unavoidable in order to provide pedestrian walking trails and stormwater dispersion outfalls/trenches necessary to maintained existing site drainage patterns and hydrology. 2419.0002—Lindsay Annexation 7 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 b. Minimise or limit the degree or magnitude of actions and their implementation by using appropriate technology or by taking affirmative steps to avoid or reduce impacts. The proposed project was carefully designed to limit critical area impacts to the minimum necessary while providing the space necessary to support a high-density residential development and associated infrastructure and maintain existing site drainage patterns and hydrology. Direct wetland impacts are limited to the fill of one small (<200 square feet), isolated Category IV wetland (Wetland D), a portion of the lower functioning, Category IV wetland (Wetland A), and a portion of Wetland C that is degraded due mowing and the encroachment of non-native invasive species. Permanent impacts to the critical area buffers onsite are situated within the outer 25 percent of the buffers and are limited to the footprint of the proposed pedestrian trail. Remaining buffer impacts are limited to temporary impacts necessary for grading during trail construction and the installation of stormwater outfalls/dispersion trenches necessary to retain existing site drainage patterns and hydrology. All buffer impacts are located in portions of the critical areas buffers degraded by prior land clearing,mowing,and the encroachment of non-native invasive species.In addition to limiting all permanent and temporary impacts to low-functioning,degraded areas onsite,minimization measures outlined in AMC 20.93.830(a) Table 20.93-5 will be implemented. Furthermore, all appropriate best management practices (BMPs) and temporary erosion and sediment control (TESC) measures consisting of silt fencing, seeding of disturbed soils, and items outlined in the project's erosion and stormwater control plans,to be prepared by a Project Engineer prior to clearing and grading activities, will be implemented throughout the duration of project construction. c. Becting the impact by repairing, rehabilitating or restoring the affected Mitigate any impacts by repairing rehabilitating or restoring the affected environment. All temporary buffer impacts will be fully restored immediately following the completion of site grading to prevent erosion and sedimentation. Permanent direct impacts to Wetlands A, C, and D and permanent impacts to wetland and stream buffers cannot be rectified. Indirect impacts to Wetlands A and C will ultimately transition to function as wetland buffer. Areas indirectly impacted by the proposed development consist of degraded areas impacted by prior land clearing, mowing, and the encroachment of non-native invasive species. These wetland areas will be enhanced with native vegetation to improve habitat and screening between the remainder of the wetlands and the proposed development,improving existing onsite wetland functions. d. Reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action. The proposed direct and indirect wetland impacts are the result of permanent actions that cannot be reduced or eliminated over time. However, additional potential impacts to critical areas will be reduced over time through a combination of buffer and wetland enhancement activities which will include densely planting targeted, degraded areas with appropriate native vegetation. Furthermore, appropriate fencing and critical areas signs will be posted to discourage intrusion into the critical areas and associated buffers consistent with the requirements of AMC 20.93.290. e. Compensating for the impact by replacing enhancing orproviding substitute resources or environments. 2419.0002—Lindsay Annexation 8 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Direct impacts to Wetlands A,C,and D,indirect impacts to Wetlands A and C,and permanent impacts to the onsite wetland and stream buffer areas will be compensated through a combination of onsite, in-kind wetland creation and enhancement and buffer creation and enhancement actions. The proposed onsite mitigation actions aim to establish higher functioning wetland habitat,improve screening and habitat between the identified critical areas and the proposed development,and,where feasible,establish protected corridors maintaining connectivity accessibility between onsite critical areas. It is anticipated that these measures will achieve a net positive ecological benefit onsite and in the greater Snohomish River watershed, and exceed the mitigation ratios establish in AMC 20.93.840(d) Table 20.93-7 to ensure no net loss of wetland or critical area buffer functions onsite. f. Monitoring the ha.Zard or other required mitigation and taking remedial action when necessary. The wetland creation and enhancement areas and buffer creation and restoration areas will be maintained and monitored for a period of 10 years to ensure the success of mitigation actions, consistent with the requirements of AMC 20.93.850 and interagency guidance(WSDOE et al., 2021).Appropriate contingency measures will be implemented if monitoring indicates that the goals and performance standard of the mitigation plan are not being met. 2.3.2 Mitigation Requirements—Streams and Surface Water Features Per AMC 20.93.740(a), in order to avoid significant environmental impacts for those activities not regulated by the Shoreline Master Program and allowed pursuant to Section 20.93.720, the applicant for a land use or development permit will select one or more of the following mitigation actions,listed in order of preference: 1. On-site environmentaly critical area restoration/improvement—Restoration or improvement in functional value of degraded on-site waterways and/or their buffers at a two to one ratio (two square feet for every one square foot impacted). 2. On-site ECA/Creation—Creation of on-site waterways and their buffers at a two to one ratio (two square feet for every one square foot impacted). 3. On-site ECA buffer restoration—Restoration or improvement in functional value of degraded on-site wateraay buffers at a ratio of six to one. As mentioned in the mitigation sequencing (Section 2.3.1) described above, the proposed project requires necessary, unavoidable permanent impacts to the buffer of Stream Z to support the construction of a pedestrian trail and stormwater dispersion outfalls/trenches at a location that will maintain existing site drainage patterns and hydrology. Additional temporary impacts are also necessary for site grading and the construction of these facilities.The portions of the Stream Z buffer proposed to be impacted consist entirely of herbaceous areas degraded by mowing and the encroachment of non-native invasive species. Overall, approximately 2,467 square feet of buffer impacts are anticipated across the site, which will be offset through 9,164 square feet of buffer creation, exceeding a 2:1 ratio. Additionally, all temporary impacts will be fully restored immediately after construction is completed. With the implementation of buffer creation and restoration actions, no net loss of stream buffer functions is anticipated. 2.3.3 Activities Allowed in Wetland Buffers The proposed project requires permanent impacts to the buffers of Wetlands A, B, and C, and offsite Wetland 1 to support the construction of a pedestrian pathway and stormwater 2419.0002—Lindsay Annexation 9 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 outfalls/dispersion trenches at locations that maintain existing site drainage patterns and hydrology. Per AMC 20.93.820(3), the following activities may be permitted in wetland buffers: (A)Activities having minimal adverse impacts on buffers and no adverse impacts on regulated wetlands. These may include low intensity,passive recreational activities such as low impact trails in the outer twenty-five percent, non permanent wildlife watching blinds, short-term scientific or educational activities, and sports fishing The proposed pedestrian trail is a low impact development activity that is located in the outer 25-percent of the buffers of Wetlands A, B, and C, offsite Wetland 1, and Stream Z. Permanent buffer impacts, totaling 2,467 square feet, are limited to the footprint of the trail and will be offset through onsite buffer creation exceeding a 1:1 ratio. Temporary impacts from grading during the construction of the trail will be fully restored immediately after construction is complete. All temporary and permanent impacts are located in portions of the wetland buffers already degraded due to prior land clearing, mowing, and the encroachment of non-native invasive species. (B) Wlith respect to Category III and IV wetlands, stormwater management facilities having no reasonable alternative on-site location;or The proposed stormwater dispersion outfalls/trenches are located within the buffers of Category III and IV wetlands; and the locations are necessary to maintain existing site drainage patterns and hydrology. Impacts associated with these features will be limited to temporary buffer impacts during construction/installation, which will be fully restored immediately after site development is complete. All stormwater will undergo enhanced water quality treatment prior to being dispersed to wetland buffers, and wetland buffer enhancement is proposed to establish a dense native plant community to further disperse and remove pollutants from runoff before it reaches the wetlands. (C) Wlith respect to Category III and IV wetlands, development having no feasible alternative location when the following conditions have been met-Impacts are the minimum necessary;Buffer impacts are mitigated through buffer averaging. No further impacts to wetland buffers are proposed onsite. 2.3.4 Mitigation Requirements—Wetlands Per AMC 20.93.840,in order to avoid significant environmental impacts, the applicant for a land use or development permit shall compensate for unavoidable wetland impacts, listed in order of preference. What is considered adequate mitigation will depend on the nature and magnitude of the potential impact. 9. On-site wetlands restorationl improvement—Restoration or improvement in functional value of degraded on- site wetlands and/or their buffers at the ratio listed in Table 20.93-7 according to the wetland type. 2. On-site wetlands creation—Creation of on-site wetlands and their buffers at the ratio listed in Table 20.93-7 according to the wetland type. 3. On-site wetlands buffer restoration—Restoration or improvement in functional value of degraded on-site wetland buffers at the ratio listed in Table 20.93-7 according to the wetland type. 2419.0002—Lindsay Annexation 10 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 4. Off-site wetlands protection—Where on-site protection is not possible, dedicate an exclusive easement for the protection of equivalent(in ecological type and function)wetland and its buffer on an off-site wetland at the ratio listed ' Table 20.93-7 according to the wetland type. The location of any off-site wetland mitigation area shall be located within the same watershed as the impact and as near to the site as possible,following this preferred order.• A. Contiguous to the impacted wetland, B. Within the same drainage basin where it would best provide the same function as the impacted wetland, and C. Elsewhere within the city. Compensatory mitigation for necessary, unavoidable direct and indirect wetland impacts will be provided through onsite, in kind wetland creation in order to meet the mitigation ratios specified under AMC 20.93.840(d)Table 20.93-7 and ensure no net loss of wetland functions onsite.Additional wetland and wetland buffer enhancement are also proposed in order to improve existing degraded critical areas functions onsite; however, wetland creation was determined to be more adequate to compensate for lost wetland functions due to the ratios required for enhancement to offset wetland impacts and the ability to compensate for the net loss in wetland area through wetland creation. 2.4 Description of Impacts 2.4.1 Wetland Impacts The proposed project requires the necessary and unavoidable complete fill of Wetland D, and partial fill of Wetlands A and C (11,399 square feet of wetland fill total). Additionally, the partial fill of Wetlands A and C will result in 12,003 square feet of indirect wetland impacts. Wetland functions for the wetlands proposed to be impacted have been assessed using the 2014 Wetland Rating System for Western Washington (Hruby and Yahnke, 2023). The wetland functions are summarized, and the wetland rating forms are provided in the Wetland and Fish and Wildlife HabitatAssessment Report•Lindsay Annexation (SVC, 2024). The proposed project will result in a complete loss of functions provided by total fill of Wetland D and partial loss of functions provided by partial fill of Wetlands A and C. A summary of wetland impacts is provided in Table 4. The proposed site plan and impacts are depicted on Sheet 2 of Appendix A. • Wetland A: Wetland A is a Palustrine Emergent, Seasonally Saturated slope wetland. The proposed fill will result in the partial loss of these areas,as well as indirect impacts to additional areas that will transition to function as buffer. The portions of Wetland A proposed to be filled are degraded due to mowing, the encroachment of non-native invasive species, and the lack of native shrub and tree cover. The remaining portions of Wetland A outside of the proposed fill will continue to be representative of the existing Cowardin classes and hydroperiods. • Wetland C: Wetland C is a Palustrine Emergent, Seasonally Saturated and Flooded depressional wetland.The proposed wetland fill will result in the partial loss of these areas,as well as indirect impacts to additional areas that will transition to function as buffer. The portions of Wetland C proposed to be filled are degraded due to mowing, the encroachment of non-native invasive species, and the lack of native shrub and tree cover. The remaining portions of Wetland C outside of the proposed fill will continue to be representative of the existing Cowardin classes and hydroperiods. 2419.0002—Lindsay Annexation 11 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 • Wetland D: Wetland D is a Palustrine Scrub-Shrub/Emergent, Seasonally Saturated depressional wetland.The proposed wetland fill will result in the complete loss of all associated wetland functions. Table 4. Su mary of Wetland Impacts Onsite Wetland HGM Cowardinl Ra g DOE Wetland Impact Impact Area Area A Slope PEMB IV 22,644 SF Direct(fill) 1,499 SF (0.52 ac) (0.034 ac) C Depressional PEMBC I11 29,723 SF Direct(fill) 9,783 SF (0.68 ac) (0.225 ac) D Depressional PSS/EMBC IV (117 F Direct(fi00 ll) (0.17 F Total Direct Wetland Impacts 11,399 SF (0.262 ac) A Slope PEMB IV 22,644 SF Indirect 690 SF (0.52 ac) (0.016 ac) C Depressional PEMBC III 29,723 SF Indirect 11,313 SF 0.68 ac 0.260 ac Total Indirect Wetland Impacts 12,003 SF 0.276 ac 1. Current WSDOE rating system(Hruby and Yahnke 2023)per AMC 20.93.800. 2. Federal Geographic Data Committee (2013); class based on vegetation: PSS = Palustrine Scrub-Shrub; PEM = Palustrine Emergent.Modifiers for Water Regime or Special Situations:B=Seasonally Saturated;C=Seasonally Flooded. 2.4.2 Buffer Impacts The proposed project requires 2,467 square feet of permanent impacts to the buffers of Wetlands A, B,and C,offsite Wetland 1,and Stream Z,as well as 61,374 square feet of additional temporary buffer impacts associated with site grading, the construction of a pedestrian trail, and the construction/installation of stormwater outfalls/dispersion trenches. These impacts will primarily result in the loss of herbaceous areas already degraded due to mowing and the encroachment of non- native invasive species. All temporary impacts will be fully restored by replanting native vegetation. 2.5 Authorizations Proposed wetland impacts will require coordination and authorization from local, state, and federal agencies. The Applicant will apply for federal authorization under Section 404 of the CWA through Nationwide Permit (NWP) #29 —Residential Developments and will also require state authorization from WSDOE for Section 401 of the CWA through a Water Quality Certification and compliance with the Coastal Zone Management Program. Additionally, direct and indirect wetland impacts and buffer impacts will require coordination and authorization from the local agency (City of Arlington). 2419.0002—Lindsay Annexation 12 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Chapter 3. Final Mitigation Plan Project impacts and mitigation actions attempt to closely adhere to local critical areas regulations specified in AMC 20.93 while also utilizing the best available science (Granger et al., 2005; Hruby et al.,2009;WSDOE et al. 2006,and WSDOE et al.,2021). In general,compensatory mitigation should be located within the same watershed as the impact site and should be located where it is most likely to successfully replace lost functions and values that best benefit the impacted watershed. Compensatory wetland mitigation actions were examined in the context of both onsite and watershed processes to determine the most suitable wetland mitigation strategy. Mitigation actions are intended to compensate for lost wetland functions and values by providing an overall improvement in the quality of water quality,hydrologic,and habitat functions according to the needs of the site, local sub-basin, and overall Snohomish River watershed. The project will provide onsite wetland creation to mitigate direct and indirect impacts to Wetlands A, C, and D. In addition, onsite wetland restoration,wetland enhancement, buffer restoration,buffer enhancement, and buffer creation will be provided to further improve onsite wetland functions and screening between the identified critical areas and the development. This chapter presents the mitigation details for the proposed residential development project. The Applicant will submit any proposed substantial changes to the project or mitigation plan, such as significant changes to the amount, location, or design of mitigation; the goals, benchmarks, or performance standards; the monitoring or adaptive management provisions, to WSDOE for review and approval prior to implementation. Minor changes, such as alterations to the species listed in the planting plan,will be documented in the as-built report. 3.1 Mitigation Strategy 3.1.1 Wetland Mitigation Strategy The onsite mitigation actions are anticipated to compensate for the proposed direct and indirect wetland impacts through 47,347 square feet (1.087 acre) of compensatory wetland creation which will expand remaining portions of Wetland A on the southern portion of the subject property further west onsite. The compensatory wetland creation is designed according to local, state,and federal rules and guidance, and the mitigation ratios established in AMC 20.93.840(d) Table 20.93-7 and joint state and federal agency guidance (WSDOE et al., 2021). The area of calculations for the compensatory mitigation area are summarized in Table 2 below. In addition to the proposed compensatory wetland creation, the remaining portions of Wetland A adjacent to the wetland creation area, totaling 20,455 square feet(0.470 acre)will be fully restored,and portions of Wetland C degraded by mowing,totaling 19,938 square feet(0.456 acre)will be enhanced to further offset the loss of functions provided by the wetlands proposed to be filled and provide a net gain in wetland area and functions onsite. 2419.0002—Lindsay Annexation 13 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Table 5. Co pensatory Wetland Miti ation Summary for Wetland Impacts Compensation WSDOE Impact Wetland Impact Type Area Rating' Creation/Re- (acre) Establishment Area(acre) Ratio A IV Direct 0.034 1.5:1 0.051 A IV Indirect 0.016 0.75:12 0.012 C III Direct 0.225 2:1 0.450 C III Indirect 0.260 1:12 0.260 D III Direct 0.003 1.5:1 0.004 Total Compensatory Wetland Creation Required: 0.777 Total Wetland Creation Proposed: 1.087 Notes: 1. WSDOE rating according to Washington State wetland rating system for Western Washington(Hruby and Yahnke,2023). 2. Indirect impacts are mitigated at one half the standard mitigation ratio for direct wetland impacts(WSDOE et al,2021). The wetland creation area will be located on the southern portion of the subject property, adjacent to/expanding the western boundary of Wetland A. The wetland mitigation area has been designed to ensure the created wetland area will be protected by a minimum of a 110-foot "perimeter buffer". According to local and joint state and federal guidance (WSDOE et al, 2021), Category III wetlands adjacent to high intensity land uses should have a protective 150-foot perimeter buffer. However,per AMC 20.93.830(a)(1), a 110-foot buffer associated with moderate land use impacts may be implemented when a relatively undisturbed vegetated corridor at least 100-feet wide is maintained between the wetland and any other protected areas, and minimization measures described in AMC 20.93.830 Table 20.93-5 are implemented. These measures will be enacted onsite to allow for a 110- foot perimeter buffer surrounding the wetland creation area. Currently, the area surrounding the wetland creation area consists of herbaceous plants and areas degraded due to mowing, the encroachment of non-native invasive species, and lack of native trees and shrubs. Following development, the wetland creation area will be situated in a protected corridor with Wetlands A, B, and C on a site developed with a high-density residential plat that meets the criteria of a high intensity land use. Portions of the 110-foot perimeter buffer dominated by non-native invasive species and will be enhanced with native plantings (see section 3.1.2 below) to increase buffer functions surrounding the wetland creation site. The wetland creation site will be further protected by the establishment of a protective easement or tract surrounding the wetland creation area and surrounding the existing wetlands and streams forming a connected corridor on the western portion of the subject property. The goal of the proposed compensatory wetland creation is to create a larger, higher functioning forested and/or scrub-shrub depressional wetland on the southern portion of the subject property by expanding Wetland A. The existing wetland areas proposed to be impacted onsite consist of predominantly emergent slope/depressional wetlands with areas of seasonal flooding and saturation that are partially degraded by mowing and the encroachment of non-native invasive species. Furthermore, Wetland D is isolated in the landscape. As such, the proposed wetland creation area adjacent to Wetland A will provide an increase in wetland functions onsite. 2419.0002—Lindsay Annexation 14 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 The wetland creation areas will be excavated from uplands west of Wetland A. At a minimum, the excavation should achieve a water table within twelve inches of the soil surface during the early growing season for at least two consecutive weeks. Topography throughout the wetland creation area will be varied to improve the diversity of hydroperiods in the landscape. In order to ensure adequate hydrology is achieved throughout the wetland creation area, existing drainage patterns will need to be modified. Portions of the ditch separating Wetlands A and B will be filled so that hydrology does not drain from Wetland B and leave the site before reaching the wetland creation area. The wetland creation area will be constructed with an outlet that maintains existing drainage to the ditch and Stream Z further downgradient, however, the outlet will incorporate a beaver dam analog to slow runoff leaving the creation area and provide an additional mechanism to sustain wetland hydrology. Organic topsoil can be added to the wetland creation site as needed to provide a suitable substrate for native plantings; topsoil may be sourced from onsite or an approved offsite supplier. Through careful design and utilization of best available science, the mitigation plan has a high probability of success and persistence. The newly created wetland area will be installed in the same environment as the existing wetlands and drainage patterns in the landscape will be modified to ensure adequate hydrology to the wetland creation area. The wetland creation area will be planted with a variety of native tree, shrub, and groundcover species selected based on species wetland indicator statuses, targeted hydroperiods, local topography, and species currently present in the existing onsite wetland areas. By following the site preparation specifications outlined herein(e.g.,excavation,topsoil installation as needed, and plantings), the wetland creation area will be able to maintain wetland hydrology during the growing season in most years to match the existing hydrologic regimes of the wetland areas proposed to be impacted and to provide functional wetland habitat. In addition to the proposed wetland creation actions, the entirety of Wetland A will be restored, and targeted areas in Wetland C that are currently degraded due to mowing and the encroachment of non- native invasive species will be enhanced. Restoration actions in Wetland A will include removing fill material left behind during the excavation of the east-adjacent ditch and restoring historic grades to tie into the wetland creation area and help facilitate the flow of runoff towards the wetland creation area. Within both the wetland restoration and enhancement area, non-native invasive species will be removed and areas will be replanted with a dense assortment of native trees, shrubs,and groundcover to improve existing wetland functions onsite. Overall, the proposed wetland creation, wetland restoration,and wetland enhancement actions are anticipated to provide a net lift in wetland functions onsite when compared to the existing,degraded wetland areas proposed to be impacted by improving horizontal and vertical plant diversity which will improve opportunities for browsing, cover, and nesting,and by increasing plant density which will slow and attenuate surface runoff,improving water quality and hydrologic functions. 3.1.2 Buffer Mitigation Strategy In order to offset 2,467 square feet of permanent wetland and stream buffer impacts, 9,164 square feet of buffer will be created onsite. Additionally, targeted buffer areas (totaling 61,329 square feet) that are currently degraded due to mowing, the encroachment of non-native invasive species, and largely lacking native tree and shrub cover, will be enhanced, and buffer areas temporarily impacted during construction (totaling 63,216 square feet) will be fully restored. Throughout the buffer creation, buffer enhancement, and buffer restoration areas, non-native invasive species and other degradations (trash, debris, etc.) will be removed, and the areas will be densely planted with an assortment of native trees, shrubs, and groundcovers. 2419.0002—Lindsay Annexation 15 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Providing native plantings within the buffer will enhance the habitat functions and critical area protection provided by the site, improve hydrology and quality of water leaving the project site, and increase buffer screening between the wetlands, Stream Z, and proposed development. Areas of established native vegetation will be retained. Overall,the proposed project will result in a net gain in ecological functions when compared to the existing degraded conditions of the existing wetland buffers. 3.1.3 Mitigation Recommendations The wetland creation, wetland restoration, wetland enhancement, buffer creation, buffer enhancement, and buffer restoration actions will include, but may not be limited to, the following recommendations: • Pre-treat invasive plants within the wetland buffer areas 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 the plan set. Pre- treatment of the invasive plants should occur a minimum of two weeks prior to removal; • Excavate a wetland creation and restoration areas within/contiguous with Wetland A to a sufficient depth to hold wetland hydrology; • Removal of all trash, refuse, and debris within the mitigation areas; • Plant all mitigation areas with native trees, shrubs, and groundcovers listed in the plan set, or substitutes approved by the responsible Project Scientist, to help retain soils, filter stormwater, and increase biodiversity; • Retention of established native vegetation where possible; • An approved native seed mix will be used to seed the disturbed areas after planting; • 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; • Provide dry-season irrigation as necessary to ensure native plant survival; • Direct exterior lights away from the critical areas wherever possible; and • Place all activities that generate excessive noise (e.g., generators and air conditioning equipment) away from the remaining critical areas where feasible. 3.2 Approach and Best Management Practices Onsite mitigation actions will provide increased wetland functions and wetland and stream protections by the maintenance or improvement of wetland and wetland and stream buffer functions onsite. Mitigation actions should occur immediately after grading is complete. Temporary erosion and sediment control (TESC) measures will be implemented that consist of high-visibility fencing (HVF) installed around native vegetation along the reduced 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 mitigation actions and actively managed for the duration of the project. All equipment staging and materials stockpiles shall be kept out of the critical areas and associated buffers, and the area will need to be kept free of spills and/or hazardous materials. All fill material for site preparation and road surfacing shall be sourced from upland areas onsite or from approved suppliers and will need to be free of pollutants and hazardous materials. Construction materials along 2419.0002—Lindsay Annexation 16 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 with all construction waste and debris shall be effectively managed and stockpiled on paved surfaces and kept free of the critical areas and buffers. Following completion of the development, the entire site shall be cleaned,and detail graded using hand tools wherever necessary,and TESC measures shall be removed. 3.3 Goals, Objectives, and Performance Standards The goals and objectives for the onsite mitigation actions are based on replacing and improving onsite wetland and wetland and stream buffer functions impacted by the proposed project relative to existing conditions. These actions are capable of providing moderate to high levels of hydrologic, water quality, and habitat functions. The goals, objectives, and performance standards are listed below. "Cover"is used in this Mitigation Plan to mean the proportion of the ground surface that is covered by vegetation when viewed from above. Native recruits will be utilized in assessing performance standards unless otherwise specified for a particular performance standard. Dead or dying plants may be replaced, and replacement plants may be utilized in assessing performance standards, unless otherwise specified for a particular performance standard. Goal 1—Compensate for the loss of 11,399 square feet of wetlands and 12,003 square feet of indirect wetland impacts by creating a minimum of 47,347 square feet of wetland area that provides a moderate level of habitat functions. Objective 1.1 — Establish a minimum of 47,347 square feet of wetland creation area contiguous with the western boundary of Wetland A. Performance Standard 1.1.1—The wetland creation area will measure at least 47,347 square feet in size as demonstrated by wetland delineations in Year 5 and Year 10. The wetland area will be delineated using the 1987Army Corps of Engineers Delineation Manual and the 2010 Wl`estern Mountains, Valleys, and Coast Regional Supplement, Version 2. Performance Standard 1.1.2 — In at least 5 out of the 10 monitoring years, the wetland creation area will have surface water or a water table or saturation within 12 inches of the soil surface for a minimum of 14 consecutive days during the growing season. Wetland hydrology will be assessed through soil pits and/or direct observations. Objective 1.2—Establish forested, scrub-shrub, and emergent wetland habitat within the wetland creation area with diverse horizontal and vertical vegetation structure and species richness to provide habitat for wetland-associated wildlife. Performance Standard 1.2.1 — At the end of Year 1, minimum plant survivorship within the wetland creation areas will be at 100 percent of the number of installed trees and shrubs (replacement of lost plants allowed). Native volunteer species may be included in the count. Performance Standard 1.2.2—Native woody vegetation in the wetland creation area will provide at least 20 percent cover by Year 3, at least 30 percent cover by Year 5, at least 50 percent cover by Year 7, and 75 percent cover by Year 10. 2419.0002—Lindsay Annexation 17 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Performance Standard 1.2.3 — In all monitoring years, the wetland creation areas will have at least 2 species of native trees and 3 species of native shrubs. Objective 1.3— Effectively control and/or eliminate non-native invasive species from the wetland creation area. Performance Standard 1.3.1 — Non-native, invasive plants (excluding reed canary grass)will not make up more than 20 percent cover during all monitoring years. Non- native,invasive plants are plants listed by the Washington State Noxious Weed Board. Performance Standard 1.3.2—Reed canary grass cover will be reduced compared to baseline conditions established immediately prior to the mitigation actions: 15 percent reduction below baseline cover by Year 5,and 30 percent reduction below baseline by Year 10. Performance Standard 1.4.3—State-listed,Class-A noxious weeds,purple loosestrife (Lythrum salicaria), and all non-native knotweeds and hybrids, and hybrids including Polygonum cuspidatum, P.polystachyum, P. sachalinense, P. bohemicum, etc. will be eradicated from the wetland creation area during all monitoring years. Goal 2—Restore a minimum of 21,145 square feet of Wetland A adjacent to the wetland creation area to provide a moderate level of habitat functions. Objective 2.1— Increase native woody plant cover within the wetland restoration area to create diverse horizontal and vertical vegetation structure and additional wildlife habitat. Performance Standard 2.1.1 — At the end of Year 1, minimum plant survivorship within the wetland restoration area will be at least 100 percent of the number of installed trees and shrubs. Performance Standard 2.1.2—Native woody vegetation in the wetland restoration area will provide at least 20 percent cover by Year 3,at least 30 percent cover by Year 5, at least 50 percent cover by Year 7, and 75 percent cover by Year 10. Performance Standard 2.1.3 — In all monitoring years, the wetland enhancement areas will have at least 2 species of native trees and 3 species of native shrubs. Objective 2.2 — Effectively control non-native invasive species within the wetland enhancement areas. Performance Standard 2.2.1 — Non-native invasive plants, excluding reed canarygrass,will not make up more than 20 percent cover during all monitoring years. Non-native invasive plants are plants listed by the Washington State Noxious Weed Board. Performance Standard 2.2.2—During all monitoring years, Reed canary grass cover will not exceed the baseline percent cover established during Year 0 (As-Built). Performance Standard 1.2.3—State-listed,Class-A noxious weeds,purple loosestrife (Lythrum salicaria), and all non-native knotweeds and hybrids, and hybrids including 2419.0002—Lindsay Annexation 18 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Polygonum cuspidatum, P.polystachyum, P. sachalinense, P. bohemicum, etc. will be eradicated from the wetland enhancement area during all monitoring years. Goal 3 — Enhance a minimum of 19,938 square feet of Wetland C to provide a moderate level of habitat functions. Objective 3.1—Increase native woody plant cover within the wetland enhancement areas to create diverse horizontal and vertical vegetation structure and additional wildlife habitat. Performance Standard 3.1.1 — At the end of Year 1, minimum plant survivorship within the wetland enhancement area will be at least 100 percent of the number of installed trees and shrubs. Performance Standard 3.1.2 — Native woody vegetation in the wetland enhancement area will provide at least 20 percent cover by Year 3,at least 30 percent cover by Year 5, at least 50 percent cover by Year 7, and 75 percent cover by Year 10. Performance Standard 3.1.3 — In all monitoring years, the wetland enhancement areas will have at least 2 species of native trees and 3 species of native shrubs. Objective 3.2 — Effectively control non-native invasive species within the wetland enhancement areas. Performance Standard 3.2.1 — Non-native invasive plants, excluding reed canarygrass,will not make up more than 20 percent cover during all monitoring years. Non-native invasive plants are plants listed by the Washington State Noxious Weed Board. Performance Standard 3.2.2—During all monitoring years, Reed canary grass cover will not exceed the baseline percent cover established during Year 0 (As-Built). Performance Standard 3.2.3—State-listed,Class-A noxious weeds,purple loosestrife (Lythrum salicaria), and all non-native knotweeds and hybrids, and hybrids including Polygonum cuspidatum, P.polystachyum, P. sachalinense, P. bohemicum, etc. will be eradicated from the wetland enhancement area during all monitoring years. Goal 4— Enhance 138,152 square feet of buffer (which includes 9,164 square feet of buffer creation to offset 2,467 square feet of permanent buffer impacts) and improve onsite buffer functions by creating native woody plant communities. Objective 4.1— Establish 138,152 square feet of buffer enhancement/restoration areas that are vegetated with native woody plant cover to create diverse horizontal and vertical vegetation structure and wildlife habitat. Performance Standard 4.1.1 — At the end of Year 1, minimum plant survivorship within the buffer mitigation areas will be at least 100 percent of the number of installed trees and shrubs. 2419.0002—Lindsay Annexation 19 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Performance Standard 4.1.2 — Native woody vegetation in the wetland buffer mitigation areas will provide at least 20 percent cover by Year 3, at least 30 percent cover by Year 5, at least 50 percent cover by Year 7,and 75 percent cover by Year 10. Performance Standard 4.1.3—In all monitoring years,the buffer mitigation areas will have at least 2 native tree species and 4 native shrubs species. Objective 4.2—Effectively control and/or eliminate non-native invasive species in the buffer enhancement areas. Performance Standard 4.2.1 — Non-native invasive plants (excluding reed canary grass)will not make up more than 20 percent cover during all monitoring years. Non- native invasive plants are plants listed by the Washington State Noxious Weed Board. Performance Standard 4.2.2—During all monitoring years, Reed canary grass cover will not exceed the baseline percent cover established during Year 0 (As-Built). Performance Standard 4.2.3—State-listed,Class-A noxious weeds,purple loosestrife (Lythrum salicaria), and all non-native knotweeds and hybrids, and hybrids including Polygonum cuspidatum, P.polystachyum, P. sachalinense, P. bohemicum, etc. will be eradicated from the buffer enhancement area during all monitoring years. 3.4 Plant Materials and Installation Plant Materials All plant materials to be used for mitigation actions shall be nursery grown stock from a reputable, local source. Only native species are to be used;no hybrids or cultivars shall 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 shall 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 the Project Scientist upon delivery. Plant material not conforming to the specifications below shall be rejected and replaced by the planting contractor. Rejected plant materials shall be immediately removed from the site. Fertilizer shall be in the form of Agriform plant tabs or an approved like form. Mulch shall consist of sterile wheat straw for seeded areas (if necessary) and clean recycled wood chips approximately 1/2- inch to 1-inch in size and '/2-inch thick for woody plants. The mulch material may be sourced from non-invasive woody materials sourced from the land clearing activities. Plant Scheduling, Species; Size; and Spacing 2419.0002—Lindsay Annexation 20 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Plant installation shall occur as close to conclusion of the construction activities as possible to limit erosion and limit the temporal loss of function provided by the wetlands, stream and buffers. All planting will occur between September 1 and May 1 to ensure plants do not dry out after installation, or temporary irrigation measures may be necessary. Quality Control for Planting Plan All plant material shall be inspected by the qualified Project 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 responsible Project Scientist with documentation of plant material that includes the supplying nursery contact information, plant species, plant quantities, and plant sizes. Product Handling,Delivery, and Storage All seed and fertilizer shall be delivered in original, unopened, and undamaged containers showing weight, analysis, and name of manufacturer. This material shall be stored in a manner to prevent wetting 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 shall be protected with soil,wet peat moss, or in a manner acceptable to the responsible Project Scientist. Plants,fertilizer,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. Preparation and Installation of Plant Materials The planting contractor shall verify the location of all elements of the mitigation plan with the responsible Project Scientist prior to installation. The responsible Project 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 shall cease until alternate plant locations have been selected by and/or approved by the Project 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. Broken roots shall be pruned with a sharp instrument and rootballs shall 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 Agriform tablets. Water pits again upon completion of backfilling. No filling shall 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. Temporary Irrigation Specifications 2419.0002—Lindsay Annexation 21 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 While the native species selected for mitigation 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 frequent watering than two times per week. Invasive Plant Control and Removal Invasive species onsite to be removed include Himalayan blackberry, reed canarygrass, and any listed noxious weeds or other invasive species that are existing or may colonize the mitigation area. These species are found nearby; therefore, to ensure these species do not expand following the mitigation actions, invasive species within the mitigation areas will be pretreated with a root-killing herbicide approved for use in aquatic sites (e.g., e.g. Glyphosate 5.4 containing herbicide) a minimum of two weeks prior to being removed from the wetland and stream buffers. The pre-treatment with herbicide shall occur prior to all planned mitigation actions, and spot treatment of any surviving other invasive vegetation should be performed again each fall prior to leaf senescence for a minimum of three years. 3.5 Maintenance & Monitoring Plan Conceptual Maintenance and Monitoring Plans are described below in accordance with AMC 20.93.390, and anticipated conditions from other regulatory agencies. The Applicant is committed to compliance with the mitigation plan and overall success of the project. As such, the Applicant will continue to maintain the mitigation areas,keeping the site free from of non-native invasive vegetation, trash, and yard waste. The mitigation actions will require continued monitoring and maintenance to ensure the mitigation actions are successful. Therefore, the mitigation areas will be monitored for a period of ten years, with formal inspections by a qualified Project Scientist. Monitoring events will be scheduled at the time of construction, 30 days after planting, and minimally on an annual basis during Years 1, 2, 3, 5, 7, and 10. Closeout monitoring will also occur in Year 10. Delineation of compensatory wetland creation areas by a qualified Wetland Scientist will be conducted in Years 5 and 10 to ensure the success of the compensatory actions. Wetland delineations will be conducted in accordance with the 9987 Army Corps of Engineers Delineation Manual (Environmental Laboratory, 1987) and the Regional Supplement to the Corps of Engineers Wletland Delineation Manual.• 1lestern Mountains, Valleys, and Coast Region (Version 2) (USACE, 2010). Monitoring will consist of percent cover measurements and stem counts 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 wetland function observations. Data collected during monitoring visits will be appropriate for the performance standards of the relevant monitoring year. The permanent monitoring stations will be established such that the mitigation site is representatively sampled. Circular sample plots, approximately 30 feet in diameter (706 square feet), will be centered at each monitoring station. Sample plots will be located entirely within the proposed mitigation site. Sample plot shapes may need to be adjusted to ensure that sample plots do not cross the mitigation site boundaries;adjusted sample plot shapes should maintain the same area as the 30-foot-diameter circular sample plots. Mean survivorship and percent cover measurements from the sample plots will be used to estimate survivorship and percent cover across the mitigation site. 2419.0002—Lindsay Annexation 22 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 To determine survivorship,individual tree and shrub stems within the relevant circular sampling plots will be counted. Plants which grow several stems from a single base will be counted as one individual plant. These trees and shrubs will then be recorded as dead/dying or alive. To determine percent cover and species richness of woody vegetation,each species of tree or shrub within the approximately 30-foot-diameter circular sampling plots will be recorded and identified as native or invasive. Plants may be recorded by genus if species is unable to be determined at the time of the monitoring visit. Herbaceous vegetation will be sampled from a 10-foot diameter (78.5 square feet), established at the same location as the center of each tree and shrub sample plot. Herbaceous vegetation within the sampling plot will be recorded to at least the genus level and identified as native or invasive. A list of observed tree, shrub, and herbaceous genera or species, cover estimates, and wetland indicator status will be included within each monitoring report. 3.6 Reporting Following construction, an as-built report will be submitted to the City of Arlington, WSDOE, and the USACE within 30 days. The as-built report will include photographs of the mitigation site upon completion. Additionally, a brief monitoring report detailing the current ecological status of the wetland creation and enhancement and the buffer creation and enhancement actions, measurement of performance standards, and management recommendations will be prepared and submitted to the City of Arlington,WSDOE, and USACE by October 31st of each monitoring year. 3.7 Contingency Plan and Long Term Management 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 portions of the mitigation areas fail to meet the success criteria, a contingency plan will be developed and implemented with Agency approval. Such plans are adaptive and should be prepared on a case-by-case basis to reflect the failed mitigation characteristics. Contingency plans can include additional plant installation, erosion control, and plant substitutions including type, size, and location. The Contingency measures outlined below can also be utilized in perpetuity to maintain the wetlands and buffers associated with the proposed project site. This project proposes 10 years of monitoring for the wetland mitigation actions in compliance with the goals and performance standards outlined in Section 3.3 of this report. However, USACE may request additional years of monitoring and formal reporting if the site has not met the goals and performance standards by Year 10. In compliance with 33 CFR 332.7(d)(2), the mitigation areas on the project site will be maintained in perpetuity by the landowner. No additional formal reporting beyond the Year 10 Monitoring Report is required at this time. Contingency/maintenance activities may include,but are not limited to: 1. Using plugs instead of seed for emergent vegetation coverage where seeded material does not become well-established; 2. Replacing plants lost to vandalism, drought, or disease, as necessary; 3. 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; 4. Irrigating the mitigation areas only as necessary during dry weather if plants appear to be too dry,with a minimal quantity of water; 5. Reseeding and/or repair of wetland and buffer areas as necessary if erosion or sedimentation occurs; 2419.0002—Lindsay Annexation 23 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 6. Spot treat non-native invasive plant species; and 7. Removing all trash or undesirable debris from the buffer area as necessary. 3.8 Critical Area Protective Measures Long-term protection of the mitigation site shall be provided by placement in an environmentally critical areas easement dedicated to the City of Arlington as required per AMC 20.93.290,which will preclude grading or any recontouring of the land, placement of structures, wells, leach fields, utility line,and/or other easements,and any other thing;vehicle activity,grazing,dumping,and the addition or removal of any vegetation unless pursuant to an approved restoration plan in perpetuity. The location and limitations associated with the mitigation area shall be shown on the face of the deed or plat applicable to the property and shall be recorded with the Snohomish County recording department. The easement will include appropriate signs and fencing to mark the boundaries and prevent intrusion. As a condition of the 401 Water Quality Certification, a draft deed notification shall be submitted to the Washington State Department of Ecology prior to recording, and proof of recording shall be documented in the as-built report. 3.9 Financial Assurances Under AMC 20.93.390(5), performance security is required to assure that all actions approved under this Mitigation Plan are satisfactorily completed in accordance with the mitigation plan, performance standards, and regulatory conditions of approval. Prior to final inspection, a maintenance and warranty security (bond) shall be obtained according to the conditions of approved development agreements with the City and appropriate permitting agencies. 2419.0002—Lindsay Annexation 24 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Chapter 4. Closure The findings and conclusions documented in this report have been prepared for specific application for the Lindsay Annexation project. These findings and conclusions 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. The conclusions and recommendations presented in this assessment 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 assessment may need to be revised wholly or in part in the future. 2419.0002—Lindsay Annexation 25 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Chapter 5. References Arlington Municipal Code (AMC). 2025. Chapter 20.93 - Critical Areas Ordinances. Website: http s://www.arhngtonwa.gov/DocumentCenter/View/8106/Chapter-2093-Critical-Area- Ordinance. Current through January 29, 2025. City of Arlington. 2023. City of Arlington Zoning Map. Website: chrome- extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.arlingtonwa.gov/DocumentCent er/View/7357/Zoning-Map-24x36-PDF. Comp Plan Amendment June 6, 2023. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87- 1,US Army Engineer Waterways Experiment Station,Vicksburg,Mississippi. Federal Geographic Data Committee. 2013. Classification of wetlands and deepwater 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. Hruby,T.,Harper,K.,and S. Stanley. 2009. Selecting Wetland Mitigation Sites Using a Watershed Approach. Ecology Publication #09-06-032. December 2009. Hruby,T.&Yahnke,A. 2023. Washington State Wetland Rating System for Western Washington:2014 Update (Version 2). Washington State Department of Ecology Publication #23-06-009. Soundview Consultants (SVC). 2024. Wetland Delineation and Fish and Wildlife Habitat Assessment Report- Lindsay Annexation. June 21,2024. Gig Harbor,Washington. Supreme Court of the United States. Sackett Et Ux. V Environmental Protection Agency Et Al. May 25, 2023. https://www.epa.gov/system/files/documents/2023-05/Sackett%20Opinion.pdf. United States Army Corps of Engineers (USACE). 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual- Western Mountains, Valleys, and Coast Region (Ver2.0), ed.J.S. Wakeley, R.W. Lichvar, and C.V. Noble. ERDC/EL TR-10-3. U.S. Army Engineer Research and Development Center. Vicksburg,Mississippi. USACE and Environmental Protection Agency(EPA). 2008. Compensatory Mitigation for Losses of Aquatic Resources; Final Rule. Federal Register. Volume 73, Number 70 (33 CFR Parts 325 & 332, 40 CFR Part 230). USACE and EPA.2023a. `Revised Definition of Waters of the United States."88 FR 3004. January 18,2023. USACE and EPA. 2023b. Revised Definition of"Waters of the United States"; Conforming. Final Rule. Federal Register.Volume 88,Number 173 (33 CFR Part 328, 40 CFR Part 120). September 8,2023. Washington State Department of Ecology (WSDOE),U.S. Army Corps of Engineers (USACE), and U.S. Environmental Protection Agency (EPA). 2006. Wetland Mitigation in Washington State Part 2: DevelopingMitigation Plans(Version 1.0,March 2006,WSDOE publication# 06-06-11b).WSDOE Shorelands and Environmental Assistance Program. Olympia,Washington. 2419.0002-Lindsay Annexation 26 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 WSDOE, USACE, and EPA Region 10. 2021. Wletland Mitigation in Wlashington State—Part 1:Agency Policies and Guidance (Version 2). Washington State Department of Ecology Publication #21-06- 003. 2419.0002—Lindsay Annexation 27 Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 Appendix A - Existing Conditions and Site Plans 2419.0002—Lindsay Annexation Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 EXISTING CONDITIONS A.- 0Na VICINITY MAP -j ----- - ---- 4—J 0 172ND STREE NE- J cn Iq u� ID ---------------—----------- m n.aD 7T Z ;J 0 II SITE 2 C3 2 V, 0 so, rr- SOURCE:ESR1(ACCESSED 01/27/2025) ce 7� < Z Z 'FU m ;mm) -3, En CIO 0 W E J ��.mo� _ -0, --- DO 71 - - 11 D1 _2D El 12 00 _j �D -4, LU M STREAM z NAME: 4S INVESTORS ADDRESS: 11400 SE 8TH STREET,SUITE 200, TYPE NS 50-FT BUFFER ------ BELLEVUE,WA 98004 cq CONTACT: ROB RISINGER PHONE: (425)417-6004 E-MAIL: ROBR@MJSINVESTORS.COM /WETLAND D 0 7T- CATEGORY IV LOCATION 40-FT BUFFER DP11 S. THE NE Y4 OF SECTION 26, 117SF 1Z TOWNSHIP 31N,RANGE 5E,WM liu z p ENVIRONMENTAL CONSULTANT ----------- SOUNDVIEW CONSULTANTS LLC C�23 U 2907 HARBORVIEW DRIVE E. z 4� GIG HARBOR,WA 98355 (253)514-8952 z 8 WETLAND 1 OFFSITE WETLAND C 11 0-FT BUFFER U CATEGORY 111, CATEGORY III 11 0-FT BUFFER 29,723 SF(ONSITE) z oe z p 0 v 6 z SHEET INDEX SHEET SHEET TITLE A M1.0 EXISTING CONDITIONS �'A 17 M2.0 PROPOSED SITE PLAN &mpAcTs Dj- M2.1 PROPOSED MITIGATION M3.0 PLANTING PLAN WIETLAND A CATEGORY IV M3.1 PLANTING TYPICAL A-1 40-FT BUFFER 0 100 200 400 22,644 SF 2' M3.2 PLANT SCHEDULE TLAND*B -,'��.D 2� M4.0 BEAVER DAM ANALOG DETAIL ATE III _7 2�2 1'10-FT BUFFER FINAL MITIGATION PLAN(1/2) GRAPHIC SCALE M5.0 .'O."k 1"=100' FINAL MITIGATION PLAN(2/2) M5.1 -------- ----- - PLAN LEGEND -7 NOTES —PROPERTY LINE 1. SURVEY&SITE PLAN PROVIDED BY LAND . . . EXISTING WETLAND BOUNDARY TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, 66 WA 98223,360-652-9727 z APPROXIMATED WETLAND BOUNDARY (NOT SURVEYED) 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW —STANDARD WETLAND BUFFER . . . . .. . . . . CONSULTANTS FOR VISUAL ENHANCEMENT. A *w.# WETLAND FLAG LOCATION . . . . . .. *DP4 DATA PLOT LOCATION —STREAM CENTERLINE DATE: 12/31/2025 Z:STREAM ORDINARY HIGH WATER LINE(OHW) SITE SCALE: AS SHOWN %M — — —STREAM BUFFER 1 1. A04 STREAM OHW(ORDINARY HIGH WATER) BY: mw FLAG LOCATION —DITCH CENTERLINE Know what's below. Call before you dig. JOB#: 2419.0002 -----------------EXISTING CONTOUR SHEET: M1.0 z PROPOSED SITE PLAN&IMPACTS 2 oho oho Zjrp .�-I I I I I \ Iq I I I I I \ \ _: - -- - I - --- _- - ;J -O N C) \ I a N N _ I � _ M z \ o . M O 0, U W 52N N 0 3 4 z z 51 50 u _ C 49 I ai a LU °� o STREAM ZJ 47 ----- x TYPE NS 50-FT BUFFER '\ 46 \ 45 1 30 z 43 I O z W o0 o 0 I ^ �o 40-FT BUFF 42 i ^ z o`� 117SFFI 41 I O yc W Mo 0 •\ 21 22 \ \ 26 40 O I Z 27 0 '7'N F �O WETLAND 1 28 I 39 I Z m C7 z7 p o OFFSITE WETLAND C I r1 o CATEGORY III a. 30 CA G R x o N CATEGORY III \ 2 o 0 110-FT BUFFER 3 32I 1 0- T UFFE \ I w \ F 3 W 0 100 200 400 WETLANP`B' CATEGORY IIL 10-FT Bt1FFER- GRAPHIC SCALE ---�--__ 1^=100' PLAN LEGEND PROPERTY LINE NOTES IMPACTS LEGEND 1. SURVEY&SITE PLAN PROVIDED BY LAND [,' WETLAND BOUNDARY WETLAND IMPACTS TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, 66 — — — —APPROXIMATED WETLAND BOUNDARY —TOTAL WETLAND FILL 11,399 SF WA 98223,360-652-9727 ZO (NOT SURVEYED) FILL--WETLANDA 1,499 SF 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW 5 — — —STREAM CENTERLINE FILL--WETLAND C 9,783 SF - -.----- -- CONSULTANTS FOR VISUAL ENHANCEMENT. FILL WETLAND 117SF �q = r;;- "----- STREAM ORDINARY HIGH WATER LINE(OHW) — — —EXISTING DITCH CENTERLINE —INDIRECT WETLAND IMPACTS 12,003 SF 3< — INDIRECT IMPACTS—WETLAND A 690 SF POST-CONSTRUCTION BUFFER , DATE: 12 31 2 025 INDIRECT IMPACTS—WETLAND C 11,313 SF ---------PROPOSED CLEARING LIMIT ® sce1.E: AS SHOWN BUFFERIMPACTS —TEMPORARY CONSTRUCTION RELATED IMPACTS 61,374 SF BY: MW m (FOR GRADING AND UTILITIES;TO BE RESTORED) Know what's p2lOW. 0 PERMANENT BUFFER IMPACTS 2,467 SF Call before you dig. 2419 J : .0002OB# q e (FOR PEDESTRIAN TRAIL) m g SHEET: M2.0 r�s PROPOSED MITIGATION �auo � ca a cn IL \ - a " z M a0 O 11�� � a 0 I 52 �1 l 2 � a zz 3 ✓Sd 4 5 b 7 3 9 - 51 O ;6 A "�" ::: 10 11 12 D: rn 0 W 4 V� V O a Ri7 49 C 0 W M48 pa STREAM Z41 TYPE NS CD 50-FT BUFFER '\ ^ — — ^ 46 �� rya 0 \ 45 130 � 44 z o _ �N . - 131 43 '. 42 WW7m �o a o 41Q P4 QZ°c° Woo � o-_ \ 21 22 23 24 2 - z P. p3 o 26 40 F7-I z y o m 27 ��zII N 0 F O WETLAND 1 28 39 I z b o OFFSITE WETLAND C 2 z o M o CATEGORY III 3o CA G R Q x o N \ CATEGORY III 110-FT BUFFER 3 f 32 1 0- T UFFE • \ � I � 3 I r•-i � x o z C) \ � o . W W 0 100 200 400 WETLAND B CATEGORY III I 110-FT BUFFER GRAPHIC SCALE I Q 1^=100' PLAN LEGEND NOTES PROPERTY LINE MITIGATION LEGEND 1. SURVEY&SITE PLAN PROVIDED BY LAND U. WETLAND BOUNDARY WETLAND MITIGATION FENCES&SIGNS TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, 66 — —APPROXIMATED WETLAND BOUNDARY 0 WETLAND C ENHANCEMENT 8,626 SF — — —POST-CONSTRUCTION BUFFER/ 1,235 SF WA 98223,360-652-9727 19 (NOT SURVEYED) CRITICAL AREA FENCE 0 — • • — • • —STREAM CENTERLINE —WETLAND RESTORATION 20,455 SF CRITICAL AREA SIGN 23 SIGNS 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW 5 CONSULTANTS FOR VISUAL ENHANCEMENT. �q = STREAM ORDINARY HIGH WATER LINE(OHW) 0 WETLAND CREATION 47,347 SF EXISTING DITCH CENTERLINE BUFFER MITIGATION 3a 0 WETLAND AS BUFFER ENHANCEMENT 12,003 SF DATE: 12/31/2025 (INDIRECT WETLAND IMPACTS) SCALE: AS SHOWN —BUFFER ENHANCEMENT 61,329 SF ' ® 4- 4e BUFFER RESTORATION 63,216 SF BY: MW (FOR TEMPORARY CONSTRUCTION RELATED IMPACTS;TO BE RESTORED) Know what's 013IOW. -BUFFER CREATION 9,164 SF Call before you dig. JOB#: 2419.0002 r=q _' SHEET: M2.1 s r�a PLANTING PLAN �auo � ca a �\ LIVE STAKE PLANTING DETAIL(TYPICAL) NOT TO SCALE �� N STORAGE OF LIVE STAKES: N N N f ALL WOODY PLANT CUTTINGS COLLECTED MORE THAN ::) 12 HR PRIOR TO INSTALLATION,MUST BE CAREFULLY -p F W BOUND,SECURED,AND STORED OUT OF DIRECT C e Q 0 SUNLIGHT AND SUBMERGED IN CLEAN FRESH WATER V - - ^ FOR APERIOD OF UP TO TWO WEEKS. J IIbI OUTDOOR TEMPERATURES MUST BE LESS THAN 50 -- DEGREES F AND TEMPERATURE INDOORS AND IN O C STORAGE CONTAINERS MUST BE BETWEEN 34 AND 50 >= EI DEGREES F. V a IF THE LIVE STAKES CANNOT BE INSTALLED DURING 1 IL N in.30 in. THE DORMANT SEASON,CUT DURING THE DORMANT above grade SEASON AND HOLD IN COLD STORAGE AT TEMPERATURES BETWEEN 33 AND 39 DEGREES F FOR UP TO MONTHS. 1^I N 53 ✓ E a [�7 O �� �A�jj 2 3 NOTES: rJ Q „z Z \ 4 5 b ] — 51 1. LIVE STAKES TO BE A MIN.1/2INCH DIAMETER;MIN. O t1D,• Q x l 8 9 lU 11 12 481NCH LENGTH. !_ Q 2. USE 1/21NCH MIN.DIAMETER REBAR OR ROCK BAR '- _ 511 = — — TO MAKE PILOT HOLE WHEN PLANTING IN DENSE OR y3 MEN I� GRAVELY SOILS TO A MIN.DEPTH OF 18 INCHES. �IIT= = �T 3. MANUALLY INSERT LIVE STAKE INTO PILOT HOLE a, 49 TAPERED END UP AND TEMP SOIL AROUND BASE. C O O III II II IIF CUTTINGS SHOULD BE INSERTED TO A DEPTH OF AT \ LU M LEAST I8 INCHES.LEAVE A MIN.OF 30"OF THE 48 1II CUTTING ABOVE GROUND SURFACE TO ALLOW FOR / min.l8in. -I fJ=II / below grade 311-II IJIE SUCCESSFUL FOLIAGE ROVE GRADE. 1 t- STREAM Z � - ^ _ - _ q, �1 Il rrll 4. MIN UMUM TWO BUDS ABOVE GRADE. W WWW TYPE NS - - ^ ^ _ - - 5. SET LIVE STAKES WITH DEAD-BLOW HAMMER. 6. WATER IMMEDIATELY AFTER INSTALLATION. n, 50-FT BUFFER ^ - - '- 46 �I ca C7 45 130 �N 131 43 /\ 1 42 TREE AND SHRUB PLANTING DETAIL,TYP. O N z 0 0 IJ I I NOT TO SCALE (1 M 41 P// 121 22 23 24 25 - 40 �`-� Y-•Z7 /1-I . o 26 z o o K, 27 LOCATOR LATH(IF SPECIFIED) I'..,) O z V V O WETLAND 1 28 39 I j m 0 0 OFFSITE WETLAND C 2 F� o z o M o CATEGORY III CA G R 1—d x o N CATEGORY III \ ✓I o 110-FT BUFFER 31 32 1 0- T UFFE 00 3 O oo O oN \ SET TOP OF ROOT MASS/ROOT -- z BALL FLUSH WITH FINISH GRADE a `n m OR SLIGHTLY ABOVE 3 to 41NCH LAYER OF MULCH-KEEP MULCH MIN.3" / AWAY FROM TRUNK OF SHRUB UNDISTURBED OR COMPACTED SUBUBGRAOE -1-711- / I NOTES: 0 100 200 400 0 ` \ I GROUPS SHRUBS OF3t OFTHESAME APPROPRIATE, SIN GROUPS OF 3l0 9 AS APPROPRIATE,OR AS SHOWN ON PLAN. I WETLAND B _���— AVOIDINSTALLING PLANTS IN STRAIGHT LINES TO ACHIEVE A NATURAL-LOOKING LAYOUT. CATEGORY 111 2.EXCAVATE PIT TO FULL DEPTH OF ROOT MASS F . - I 110-FT BUFFER I AND 2 X ROOT MASS DIAMETER.SPREAD ROOTS TO FULL Q GT)A P 1C SCALE C A T T \ WIDTH OF CANOPY.SCARIFY SIDES OF PIT. 1�1117111 Jl.n I,L 3.MIDWAYTHROUGH PLANTING ADD AGROFORM TABLET AND 1"-1OO' l R 4.B CTKFILL TO BE COMPACTED USING WATER ONLY. 5.WATER IMMEDIATELY AFTER INSTALLATION. PLAN LEGEND _—— PROPERTY LINENOTES PLANTING LEGEND 1. SURVEY&SITE PLAN PROVIDED BY LAND C _-A WETLAND BOUNDARY WETLAND ENHANCEMENT PLANTINGS 19,938 SF TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, z — — —APPROXIMATED WETLAND BOUNDARY WA 98223,360-652-9727 � (NOT SURVEYED) 0 WETLAND RESTORATION/CREATION PLANTINGS 68,492 SF 0 1 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW 5 — — — — —POST-CONSTRUCTION BUFFER —BUFFER ENHANCEMENT/CREATION PLANTINGS 70,283 SF CONSULTANTS FOR VISUAL ENHANCEMENT. — • • — • —STREAM CENTERLINE —BUFFER RESTORATION/CREATION PLANTINGS 67,869 SF -STREAM ORDINARY HIGH WATER LINE(OHW) TOTAL PLANTED AREAS: 226,582 SF 3 —EXISTING DITCH CENTERLINE DATE: 12/31/2025 ® SCALE: AS SHOWN BY: MW Know what's below. CBII before you dig. JOB#: 2419.0002 �q SHEET: M3.0 r�a PLANTING TYPICAL PLANTING TYPICAL ® O Q® � o 0 0 ®p R ®® ®® ® - co co L ®O o 0 0 O®O sOc ® ® O Pln O N Scienr f Name Common Name ��e e o O� �® G) � p" O © c� to N N TREES o Q ® —�% �O �\.®®®® ® PM lrtus rubs red alder °� ` ® 2 • S .�® ® r+^ r, ® R � O Frartgulo purshiana(Rhamnus p.) cascara I® O T 77VW✓NN � ni ®® ( 1 H Malus fusca(Pyrusf) Pacific crabapple ®�® ® O O ®� ® ®® Pbr ® aM ®® `1V� a N N (Do Pceax;rchertsix sitkaapra« ® ®�®g ®® ®ao ® O * ®® ® PIA ® R PM O N z O Populus nichocarpn black cottonwood ® � ® ®® N r* Pseadar pa men;ex;; Douglas fir ®QQ ® 0 $e ®® ©® R ®® * C a a`y z A Sa(ix lasiandra E Pacific willow I sc sc ®® ®® � Safi—le-out scouleriana Scouler's willow 00 O® S 7 © ® ® �� ® • Sc ® f+ln ® RD Sc Sc ® ��//� W FQ 5 aRx shch n,s;s Sitka willow Y��/�aviY/\'/yTy rn�a preata westero redreaar ® •t C1 ® • ® ® sc O c SHRUBS Sc ® S Si Si Sill Si F Si Si Si BSc Sc O cercircinatum vinemaple I • O O ®®O ® ® Sc R L i Comm sroronl ro red-osier dogwood � � p„ R si W o Crataegus douglasii Douglas hawthorn I sc O ®®O OO ®, oe o NO SV®OMBO L Gaulthrer;a sha//on salal Louicemmvolucmr black t winberry (.yOam/\®y6®��Ot�$) •®®®® Rn ®® PM P ©®R SWc Sc Q S�sci si 5i L®L o°�p Oemleia cerasif—ws Indianplum I p" o e v e e�° � Physocapus capiratus Paific nmebark ° W1teO�^j a rQN^n¢F0 Nac•0y' aWCC�L", �OOOoN F*n MOOO NO U4 Rosa gymnocapa bald hip rose PM ® o N a U o ® W Si S p ^ 7• x o Rosa nutkana Nootka rose ® An O © PM ® qs Si ®0 • ® ® ® c3 Si ° o �0 °�� o °� 0` N O O _ o frl O M O Rubus pecmbilis var.speembilis salmonberry I••�•I x r o Spiraea a aglas;; Douglas PLANTING TYPICAL o� gas spbea I-1 © Symphoricnpos albus car.raevigatas conumn snmvberry PLANTING LEGEND I--I 0 100 200 400 0 WETLAND ENHANCEMENT PLANTINGS GRASSES Carexabaapm Io.gh,cdgc I 0 WETLAND RESTORATION/CREATION PLANTINGS GRAPHIC SCALE —BUFFER ENHANCEMENT/CREATION PLANTINGS SEED MIXES(wsvw.riverrefugeseed.com) 1"=100' —BUFFER RESTORATION/CREATION PLANTINGS Native Upland Grass Mix#9 20 Ibs/acre Flymus glaucus Bluewildrye PLAN LEGEND B—tscarinatus Calif nia brome Hordeum brachyartI eruen Meadowbarley —— PROPERTY LINE Festuca roemeri Roemer's fescue ° Descha psiaemngata Slender hairgrass C . ' WETLAND BOUNDARY ¢ rostis exarata Spike bentgrass Q Descha psiacephosa Tufied.hairgrass — — —EXISTING DITCH CENTERLINE Festuca rubs var.ruhra Red fescue Native Welland Grass Mix#10 20 Ibs/acre Glyceria occidenta(is Westem mannagrass Bechsseaut syzigachete American sloughgrass ES TOt'1'aL'C a Hordeum brachynntherum Meadow barley NOTES 1 z Alopecarus qusaRs Shortmvafoxmil 1. SURVEY&SITE PLAN PROVIDED BY LAND moist sob sea e&Rash Mix 111 20 lbs/acre TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, 0 WA 98223,360-652-9727 Cmrx un;/meralis One-sided sedge19 C.—densa Dense sedge j Jartear pasas Commonrnan 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW Jun eemsis Slendermah CONSULTANTS FOR VISUAL ENHANCEMENT. [ �q Jurtcus bufonias Toad rush Carex sripata Awl fruited sedge C.—ob ne to Slough sedge :�a NEW DATE: 12/31/2025 ® SCALE: AS SHOWN 1. BY: MW 1 Know what's below. Call before you dig. JOB#: 2419.0002 q _' SHEET: M3.1 s r�a PLANT SCHEDULE PLANT SCHEDULE o 01 � f Areas: 68,492 19,938 67,869 70.283 226,582 Critical Area Protection Area (n N off Cov'g(%h 100 75 100 750 5 i--1 M M Trees(%h 50 M 50 N rr) Shrubs%: 50 50 50 50 Sign Installation Guidelines /O• Wetland Wetland Spacing Height Size � (a V Scientific Name Common Name WL Slams Restoration/Creation Enhancement Buffer Restoration Buffer Enhancement TOTAL (-in.) (min) (min) Planting Area J � TREE6 j� [ C O Qi Anus rubs red alder FAC 0 0 0 100 100 IV IT 3ft Igal Dry/Moist-on hummock CRITICAL AREA 12 A V C (~ i "1(10"Aluminum sign with while p 5 Point white with black lettering. I� PROTECTION AREA reflective background. A Mja N Install one per protected feature Frangula purshiana(Rhamnus p.) cascara FAC 0 0 12 12 24 10 R 3 it 2 gal Dry M Z •u�.„w�u�s. \ m o conspicuous place. 2 Pressure treated 2'1(4'(NOM.) n, U Pacific crab 1 Minimum of Iwo galvanized orstoinless •^( N z. W Males fusca(Pyrusf.J app a FACW 18 4 0 0 22 10 ft 3 ft 2 gal Wet-to wetland Wooden stake,metal or E steel wood lag bolts to firmly secure sign. 4ft fiberglass post. N O 5 ft. min. (Carsonite style is A provided 4) ,, Pieca sitchensis Sitka aprvice FAC 27 6 0 0 33 IV ft 3ft 5gal Moist-on hummock 4'k 4'pressure treated wooden ithosanan[hoL) N A pose with 1/2"chamfer at top. r� Q �, z 'z Magnetic pin �p Q ] PopuWs trichocarpa black cottonwood FAC 18 0 77 0 95 10 ft 3 ft 2 gal Moat/Wet-on hummock ,� Magnetic lomtor pin(e.g.,pipe,labor, Ton (e.g.,pipe,tabor, O 20 penny nail,eh.)Placed 8-12"from 0) 20 penny nail,sk.) �� � O ^ post along NGPA line. E sWr I,i Plated 8-IZ"from 7 Pseudotsuga menziesi( Douglas fir FACU 0 0 l53 147 300 10 f[ 3ft 5 gal Dry post along CAPA line. 5� � Quid-sel Concrete t Concrete Q Q Solis lasiondra Pack willow FACW 44 11 0 0 55 10 ft 4ft Stakes Wet 2ft f"5 ft" hor or similar anchor s LLl M min. min. ubstituted for concrete / 1 signs provided itSalis seou(eriana Scoulceir winow FAC 141 29 77 74 321 5ft 4ft Stakes Dry T chors the post. wn" Compacted arrive material Salix shchensis Sid.winow FACW 141 36 0 0 177 5R 4ft Stakes Moist/Wet edmaterial Thuj.plirnt. westanredcedar FAC 9 _ 77 74 162 loft 3ft 5and Moat-on hummock NOTES: Total: 398 1 8e 1 396 1 407 1 1289 1 1.CAPA signs shall be placed no greater than 100 feet apart around the perimeter of the Critical Area Protection Area.Minimum placement shall include SHRUBS one Type 1 sign per wetland,and at least one Type 1 sign shall be placed in any lot that borders the Critical Area Protection Area,unless otherwise approved F V o Q z W Ater circinatum it.maple FAC 0 0 0 52 52 10 ft Off 2ga1 Dry/Moist by the County biologist. O 2.Sign placement shall be subject to the approval of Snohomish County.Alternative sign designs may be submitted to Snohomish County for approval. Carnal stoma f ra red—ia dogwood FACW 686 163 0 0 849 4 ft 3 ft I gat Mont/Wet 3.All signs must he secure and permanent. W z o 0 ~) N N a M^ Cratwegus doug(ns/J Douglas hawdsom FAC 220 0 0 0 220 5 ft 3 ft 2 gal Moat O Q (Wj o /P^4 z dj Gnultheria shaUon lined FACU 0 0 458 0 458 4 ft I ft 1 gal Dry 7 H F--I r SPLIT RAIL FENCE DETAIL F �I�77 /F� z s Lonicera inrol—ta black twNbary FAC 115 0 0 0 115 4 ft 2ft 1 ed Moist/Wet ,LI �./ N Q o g NOT TO SCALE Z amp z N N w 7 O O OeMeria taros j rmis Indian plum FACU M 0 196 206 402 5 ft 2ft 2 gal Dry rt (t rh/—I z Physocapus capitatus Pacific nineberk FACW 220 21 0 241 Sfl 2ft Igal Moaf/We[ oo"< rn �.Nrs 6x6'SPLIT Rosa bald hi CEDAR POSTS gymnocapa Prose FACU 0 153 321 474 4 ft 2ft 1 gal Dry/Moist /"1 W "t Q o m Rose nutkana Noaka rose FAC 0 153 0 153 4 fl 2 ft 1 gd Dry z o Rubas spectabilis var.spectabilb sadmonberry FAC 0 130 305 321 756 4 ft 2 ft 1 gal Moat 4 TO 6"SPLIT 1.6" m CEDAR RAILS, P. Spiraea douglasii Douglas spires FACW 343 33 i0 0 376 4 ft 2 ft 1 gal Moat/Wet PITCH SURFACE FINISH D GRADE Symphoricarpos a/bus var.1-WIon smwberry FACU 0 0 305 321 62b 4 R 2ft 1 god Dry Toml: 1584 347 1570 1221 4722 _ GRASSES I`. l:.�II�III-IIPqI1- � Caret obrtupra slough sedge OBL 500 0 0 0 500 4 ft 6 in plug 1 .Wet MIN" 9] (;r—CONCRETE FOOTING Total: 500 0 I NATIVE SOIL BACKFILL 0 0 500 4-61, COMPACTED Wetland Wetland GRANULAR SEED MIXES(wsvw.nverrefugeseed.d»m) WL slams RestoraOoN Creation Enhancement BuR Restoration Bufkr Euha m uceent TOTAL SUB-BASE 12"DIAM. Native Upland Gress Me N9 20 Ibe/acre o E(ye us g(aucus Blue wildrye 30% NOTES: Be..-carinatus California boom 25% E-CUT Q Herdeum brachantherum Mendowbarl 10% 1. POSTS AND RAILINGBPRMITTED. ASSEMBLY. y eY 2. 3-RAIL DESIGNS ARE PERMITTED. PZ Festuca--i Reenacts f cue 10% 3. FENCE SHALL BE PLACED AT APPROVED BUFFER EDGE. Develounpsia¢(..gala Slender hahgmss 10% Agresti,exarata Spike bentgass 5% Deschampsia cespitosa Tufted hairgmss 5% a Fenrube.var.rubs Red fescue 5% Total(Ibs): 0 0 31 0 31 NOTES Native Welland crass Mix h10 20 lbe/aere is Glycermoccidentatis In sternmannagmsa 40% 1. SURVEY&SITE PLAN PROVIDED BY LAND Heckmannia syrigachne Meadow anatong}sp{ass so% TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, a Nordeum brachyautherum adow barley _0% rn m° ................ m¢earn,ae nNi, mawnfoxtaa lo% WA98223,360-652-9727 z O Total oba): 24 0 0 0 1z4 5 MetatsaNsed e&RonalMixhd 20[be/aete Q 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW earex anemerNi, one aided sedge 70% C.—do-. DetLeeaedge 12% CONSULTANTS FOR VISUAL ENHANCEMENT. [ �q Juntas/fasa, commanruan s% Juncos tennis Slender rush 5% 3 a Juncos bufonius Tend rush 5% C.— ion, Awl fivited sedge 2% DATE: 12/31/2025 C.—obnupta Slough sedge 1% a Total([be): 8 0 0 0 8 ® SCALE: AS SHOWN 1-Sciemific names stud species identification taken from Flora ojrhe Poc fc Northwest,2nd Edition (Hitchcock and Cronquis;Ed.by Giblu,,Ledger,7a-ka,and Olmstead,2018). Fe BY: MW 2-Ova-sized container places are suitable f replacemen t pending Project Biologist approval m 3-Alternate native plant species may be substituted or added with Project Biologist approved. l� 4-AN disturbed and bare soil areas in the buffer to be seeded with a native grass seed mix. Know what's beI O W. m a A 5-Shrub wlwletions based upon 5-ft average spacing. 6-Treecalealmions based upon l0-fl avocagespacing Call before you dig. JOB#: 2419.0002 m SHEET: M3"2 _'s r�a BEAVER DAM ANALOG DETAIL N N 7 BEAVER DAM ANALOG BEAVER DAM ANALOG,TYP. ° NOT TO SCALE 3 � � N N m U UNTREATED WILLOW WEAVE; J VI 4"WOOD WILLOW BRANCH • �I POST,TYP. AVG DIA.=2" O 13, `L 2'-0"O.C. FINISH GRADE 10 am M z III-III 1 B"MIN. 2"MIN. III-III-III- II=1II=1II=1II =1II=1II=1I z =1 w =III=III=III=11I- I BANKFULL I11-111-111 T � I � � I HEIGHT I") N ,` -III—III—III iDEPMI J ~III—� — III—III—III— Q z z I I- 1 h 1 1 1 I - I 11 I= I I I I 11-- I I I- o Q x ] II 1-I I I ° I=111=1SOILS 1=1 I 1=111-111-111�, -111�) III-III-III-III COM ACTEDD NATIVE W BACKFILL _ III,;I I I 1111-1 I I-I I I���I I I-III-1 I I I" � x —1 11— =1 1 1—I 0 i� N C7 CROSS-SECTION I z �N BANKFULL WIDTH STREAM BED z O p it I I II fT� P. I H QV N 0 §O IF^-11 x z o I a zm i O i i I I II UNTREATED 4"WOOD I I WEAVOE POST,TYP,BATTER 10 DEGREES INTO FLOW, I I 1'SPACING BETWEEN I I I FRONT AND BACK LINE I I PLAN VIEW Q � NOTES 1. SURVEY&SITE PLAN PROVIDED BY LAND TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, 66 WA 98223,360-652-9727 z 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW 5 • CONSULTANTS FOR VISUAL ENHANCEMENT. �q 3a DATE: 12/31/2025 SCALE: AS SHOWN BY: MW Know what's 11210W. m Call before you dig. JOB#: 2419.0002 �q s SHEET: M4"0 _'s r�a FINAL MITIGATION PLAN 1/2 THESE IMPACTS WILL PRIMARILY RESULT IN THE LOSS OF HERBACEOUS AREAS A]RA ADY NEWLY CREATED WETLAND AREA WILL BE INSTALLED IN THE SAME ENVIRONMENT AS PREPARATION AND ROAD SURFACING SHALL BE SOURCED FROM UPLAND AREAS ONSITE C N -ItMITIGATION PLAN DEGRADED DUE TO MOWING AND THE ENCROACHMENT OF NON-NATIVE INVASIVE THE EXISTING WETLANDS AND DRAINAGE PATTERNS IN THE LANDSCAPE WILL BE OR FROM APPROVED SUPPLIERS AND WILL NEED TO BE FREE OF POLLUTANTS AND O Cr SPECIES. ALL TEMPORARY IMPACTS WILL BE FULLY RESTORED BY REPLANTING NATIVE MODIFIED TO ENSURE ADEQUATE HYDROLOGY TO THE WETLAND CREATION AREA. HAZARDOUS MATERIALS.CONSTRUCTION MATERIALS ALONG WITH ALL CONSTRUCTION PROJECT IMPACTS AND MITIGATION ACTIONS ATTEMPT TO CLOSELY ADHERE TO LOCAL VEGETATION. THE WETLAND CREATION AREA WILL BE PLANTED WITH A VARIETY OF NATIVE TREE, WASTE AND DEBRIS SHALL BE EFFECTIVELY MANAGED AND STOCKPILED ON PAVED 0 ti ti CRITICAL AREAS REGULATIONS SPECIFIED IN AMC 20.93 WHILE ALSO UTILIZING THE SHRUB, AND GROUNDCOVER SPECIES SELECTED BASED ON SPECIES WETLAND SURFACES AND KEPT FREE OF THE CRITICAL AREAS AND BUFFERS. FOLLOWING •--1 U) Iq 'r? BEST AVAILABLE SCIENCE(GRANGER ET AL,2005;HRUBY ET AL.,2009;WSDOE ET AL.2006, 1.2 MITIGATION STRATEGY INDICATOR STATUSES,TARGETED HYDROPERIODS,LOCAL TOPOGRAPHY,AND SPECIES COMPLETION OF THE DEVELOPMENT,THE ENTIRE SITE SHALL BE CLEANED,AND i--1 AND WSDOE ET AL.,2021). IN GENERAL,COMPENSATORY MITIGATION SHOULD BE CURRENTLY PRESENT IN THE EXISTING ONSITE WETLAND AREAS. BY FOLLOWING THE DETAIL GRADED USING HAND TOOLS WHEREVER NECESSARY,AND TESC MEASURES rn N N LOCATED WITHIN THE SAME WATERSHED AS THE IMPACT SITE AND SHOULD BE SITE PREPARATION SPECIFICATIONS OUTLINED HEREIN(E.G,EXCAVATION,TOPSOIL SHALL BE REMOVED. 1.2.1 WETLAND MITIGATION STRATEGY �� , LOCATED WHERE IT IS MOST LIKELY TO SUCCESSFULLY REPLACE LOST FUNCTIONS AND INSTALLATION AS NEEDED,AND PLANTINGS),THE WETLAND CREATION AREA WILL BE c VALUES THAT BEST BENEFIT THE IMPACTED WATERSHED. COMPENSATORY WETLAND THE ONSITE MITIGATION ACTIONS ARE ANTICIPATED TO COMPENSATE FOR THE ABLE TO MAINTAIN WETLAND HYDROLOGY DURING THE GROWING SEASON IN MOST U MITIGATION ACTIONS WERE EXAMINED IN THE CONTEXT OF BOTH ONSITE AND PROPOSED DIRECT AND INDIRECT WETLAND IMPACTS THROUGH 47,347 SQUARE FEET YEARS TO MATCH THE EXISTING HYDROLOGIC REGIMES OF THE WETLAND AREAS T GOALS,OBJECTIVES,AND PHE GOALS AND OBJECTIVES P OR STANDARDS Uj J Uj WATERSHED PROCESSES TO DETERMINE THE MOST SUITABLE WETLAND MITIGATION (1.087 ACRE)OF COMPENSATORY WETLAND CREATION WHICH WILL EXPAND REMAINING PROPOSED TO BE IMPACTED AND TO PROVIDE FUNCTIONAL WETLAND HABITAT. T THE ONSITE MITIGATION ACTIONS ARE BASED ON ONCE HE • H7i STRATEGY. PORTIONS OF WETLAND A ON THE SOUTHERN PORTION OF THE SUBJECT PROPERTY REPLACING AND IMPROVING ONSITE WETLAND AND WETLAND AND STREAM BUFFER O al ry MITIGATION ACTIONS ARE INTENDED TO COMPENSATE FOR LOST WETLAND FURTHER WEST ONSITE.THE COMPENSATORY WETLAND CREATION IS DESIGNED FUNCTIONS IMPACTED BY THE PROPOSED PROJECT RELATIVE TO EXISTING CONDITIONS. THESE ACTIONS ARE CAPABLE OF PROVIDING MODERATE TO HIGH CC ( H FUNCTIONS AND VALUES BY PROVIDING AN OVERALL IMPROVEMENT IN THE QUALITY ACCORDING TO LOCAL,STATE,AND FEDERAL RULES AND GUIDANCE,AND THE IN ADDITION TO THE PROPOSED WETLAND CREATION ACTIONS,THE ENTIRETY OF OF WATER QUALITY,HYDROLOGIC,AND HABITAT FUNCTIONS ACCORDING TO THE MITIGATION RATIOS ESTABLISHED IN AMC 20.93.840(D)TABLE 20.93-7 AND JOINT STATE WETLAND A WILL BE RESTORED,AND TARGETED AREAS IN WETLAND C THAT ARE LEVELS OF HYDROLOGIC,WATER QUALITY,AND HABITAT FUNCTIONS. 1L N NEEDS OF THE SITE,LOCAL SUB-BASIN,AND OVERALL SNOHOMISH RIVER WATERSHED. AND FEDERAL AGENCY GUIDANCE(WSDOE ET AL.,2021).THE AREA OF CALCULATIONS CURRENTLY DEGRADED DUE TO MOWING AND THE ENCROACHMENT OF NON-NATIVE M 2 THE PROJECT WILL PROVIDE ONSITE WETLAND CREATION TO MITIGATE DIRECT AND FOR THE COMPENSATORY MITIGATION AREA ARE SUMMARIZED IN TABLE 2 BELOW.IN INVASIVE SPECIES WILL BE ENHANCED. RESTORATION ACTIONS IN WETLAND A WILL THE GOALS,OBJECTIVES,AND PERFORMANCE STANDARDS ARE LISTED BELOW."COVER" M INDIRECT IMPACTS TO WETLANDS A, C,AND D. IN ADDITION, ONSITE WETLAND ADDITION TO THE PROPOSED COMPENSATORY WETLAND CREATION,THE REMAINING INCLUDE REMOVING FILL MATERIAL LEFT BEHIND DURING THE EXCAVATION OF THE IS USED IN THIS MITIGATION PLAN TO MEAN THE PROPORTION OF THE GROUND •�-1 2 C) RESTORATION, WETLAND ENHANCEMENT, BUFFER RESTORATION, BUFFER PORTIONS OF WETLAND A ADJACENT TO THE WETLAND CREATION AREA,TOTALING SURFACE THAT IS COVERED BY VEGETATION WHEN VIEWED FROM ABOVE. NATIVE EAST ADJACENTDITCH AND RESTORING HISTORIC GRADES TO TIE INTO THE WETLAND E 'Z D3 ENHANCEMENT,AND BUFFER CREATION WILL BE PROVIDED TO FURTHER IMPROVE 2Q455 SQUARE FEET(0.470 ACRE)WILL BE FULLY RESTORED,AND PORTIONS OF WETLAND RECRUITS WILL BE UTILIZED IN ASSESSING PERFORMANCE STANDARDS UNLESS H CREATION AREA AND HELP FACILITATE THE FLOW T �RUNOFF TOWARDS THE rn ONSITE WETLAND FUNCTIONS AND SCREENING BETWEEN THE IDENTIFIED CRITICAL C DEGRADED BY MOWING,TOTALING 19,938 SQUARE FEET(0.456 ACRE)WILL BE OTHERWISE SPECIFIED FOR A PARTICULAR PERFORMANCE STANDARD. DEAD OR DYING N ENHANCED TO FURTHER OFFSET THE LOSS OF FUNCTIONS PROVIDED BY THE WETLAND CREATION AREA. WITHIN BOTH THE WETLAND RESTORATION AND PLANTS MAY BE REPLACED,AND REPLACEMENT PLANTS MAY BE UTILIZED IN ASSESSING AREAS AND THE DEVELOPMENT. THIS CHAPTER PRESENTS THE MITIGATION DETAILSJ ENHANCEMENT AREA,NON-NATIVE INVASIVE SPECIES WILL BE REMOVED AND A REAS i-1 FOR THE PROPOSED RESIDENTIAL DEVELOPMENT PROJECT. WETLANDS PROPOSED TO BE FILLED AND PROVIDE A NET GAIN IN WETLAND AREA AND PERFORMANCE WILL BE REPLANTED WITH A DENSE ASSORTMENT OF NATIVE TREES,SHRUBS,AND Q STANDARDS, UNLESS OTHERWISE SPECIFIED FOR A PARTICULAR N =J z ,Z W THE APPLICANT WILL SUBMIT ANY PROPOSED SUBSTANTIAL CHANGES TO THE PROJECT FUNCTIONS ONSITE. PERFORMANCE STANDARD. ;3GROUNDCOVER TO IMPROVE EXISTING WETLAND FUNCTIONS ONSITE. OVERALL,THE OR MITIGATION PLAN,SUCH AS SIGNIFICANT CHANGES TO THE AMOUNT,LOCATION,OR PROPOSED WETLAND CREATION, WETLAND RESTORATION, AND WETLAND c DESIGN OF MITIGATION;THE GOALS,BENCHMARKS,OR PERFORMANCE STANDARDS; Table 2.Compensatory edand Mi' anon Summary for Wetland Impacts ENHANCEMENT ACTIONS ARE ANTICIPATED TO PROVIDE A NET LIFT IN WETLAND GOAL 1-COMPENSATE FOR THE LOSS OF 11,399 SQUARE FEET OF WETLANDS AND 12,003 0) t/t THE MONITORING OR ADAPTIVE MANAGEMENT PROVISIONS,TO WSDOE FOR REVIEW FUNCTIONS ONSITE WHEN COMPARED TO THE EXISTING,DEGRADED WETLAND AREAS SQUARE FEET OF INDIRECT WETLAND IMPACTS BY CREATING A MINIMUM OF 47,347 AND APPROVAL PRIOR TO IMPLEMENTATION. MINOR CHANGES,SUCH AS ALTERATIONS TO THE SPECIES LISTED IN THE PLANTING PLAN,WILL BE DOCUMENTED IN THE Impact Compensation PROPOSED W BE IMPACTED O IMPROVING HORIZONTAL AND VERTICAL PLANT SQUARE FEET OF WETLAND AREA THAT PROVIDES A MODERATE LEVEL OF HABITAT s/ O r• WSDOE P DIVERSITY WHICH WILL IMPROVE OPPORTUNITIES FOR BROWSING, COVER, AND FUNCTIONS. j 0 c) AS-BUILT REPORT. Wedand Impact Type Area NESTING,AND BY INCREASING PLANT DENSITY WHICH WILL SLOW AND ATTENUATE Rating' Creation/Re- s W FQ O (acre) SURFACE RUNOFF,IMPROVING WATER QUALITY AND HYDROLOGIC FUNCTIONS. 1.1 DESCRIPTION OF IMPACTS Establishment Area(acre) OBJECTIVE 1.1- ESTABLISH A MINIMUM OF 47,347 SQUARE FEET OF WETLAND / Ratio CREATION AREA CONTIGUOUS WITH THE WESTERN BOUNDARY OF WETLAND A. / x 1.1.1 WETLAND IMPACTS O.G34 3.1.2 BUFFER MITIGATION STRATEGY A TV Direct 1.5:1 0.051 t` IN ORDER TO OFFSET 2,467 SQUARE FEET OF PERMANENT WETLAND AND STREAM PERFORMANCE STANDARD 1.1.1 - THE WETLAND CREATION AREA WILL THE PROJECT REQUIRES THE NECESSARY AND UNAVOIDABLE COMPLETE FILL OF A IV Inditeet 0.016 0.75:1x 0.012 MEASURE AT LEAST 47,347 SQUARE FEET IN SIZE AS DEMONSTRATED BY BUFFER IMPACTS, 9,164 SQUARE FEET OF BUTTER WILL BE CREATED ONSITE. WETLAND D,AND PARTIAL FILL OF WETLANDS A AND C (11,399 SQUARE FEET OF ADDITIONALLY,TARGETED BUFFER AREAS OTALING 61,329 SQUARE FEE THAT ARE WETLAND DELINEATIONS IN YEAR 5 AND YEAR 10. THE WETLAND AREA WILL WETLAND FILL TOTAL).ADDITIONALLY,THE PARTIAL FILL OF WETLANDS A AND C WILL C III Direct T'25 2:1 0.450 Q BE DELINEATED USING THE 1987 ARMY CORPS OF ENGINEERS DELINEATION RESULT IN 12,003 SQUARE FEET OF INDIRECT WETLAND IMPACTS. WETLAND FUNCTIONS CURRENTLY DEGRADED DUE TO MOWING, THE ENCROACHMENT OF NON-NATIVE MANUAL AND THE 2010 WESTERN MOUNTAINS, VALLEYS, AND COAST Q C III Indirect 0._60 1:1= Q.(60 INVASIVE SPECIES,AND LARGELY LACKING NATIVE TREE AND SHRUB COVER,WILL BE FOR THE WETLANDS TO BE IMPACTED HAVE BEEN ASSESSED USING THE 2014 WETLAND REGIONAL SUPPLEMENT,VERSION 2. RATING SYSTEM FOR WESTERN WASHINGTON (HRUBY AND YAHNKE, 2023). THE D RI Direct ENHANCED,AND BUFFER AREAS TEMPORARILY IMPACTED DURING CONSTRUCTION 0.003 1.Srl 0.004 (TOTALING 63,216 SQUARE FEET)WITS,BE FULLY RESTORED. THROUGHOUT THE BUFFER • o WETLAND FUNCTIONS ARE SUMMARIZED,AND THE WETLAND RATING FORMS ARE I-7 0 Total Compensatory Wedand Creation Required: 0.777 CREATION,BUFFER ENHANCEMENT,AND BUFFER RESTORATION AREAS,NON-NATIVE PERFORMANCE STANDARD 1.1.2-IN AT LEAST 5 OUT OF THE 10 MONITORING N PROVIDED IN THE WETLAND AND FISH AND WILDLIFE HABITAT ASSESSMENT LOSSREPORT INVASIVE SPECIES AND OTHER DEGRADATIONS (TRASH, DEBRIS, ETC.) WILL BE YEARS,THE WETLAND CREATION AREA WILL HAVE SURFACE WATER OR A W �+ N. LINDSAY ANNE%ATTON(SVC,2024).THE PROJECT WILL RESULT IN A COMPLETE LOSS OF Total Wetland Creation Proposed: 1.087 FUNCTIONS PROVIDED BY TOTAL FILL OF WETLAND D AND PARTIAL LOSS OP n.�m�� REMOVED,AND THE AREAS WILL BE DENSELY PLANTED WITH AN ASSORTMENT OF WATER TABLE OR SATURATION WITHIN 12 INCHES OF THE SOIL SURFACE FORA p NATIVE TREES,SHRUBS,AND GROUNDCOVERS. MINIMUM OF 14 CONSECUTIVE DAYS DURING THE GROWING SEASON.WETLAND �"� U E" o FUNCTIONS PROVIDED BY PARTIAI.PILL OF WETLANDS A AND C. A SUMMARY OF 1. yVSDOE g����a w hh,gro s- aa„d�:. g ,[�,w w at..„��.,,(x by;�,d Yahnke.zo1 HYDROLOGY WILL BE ASSESSED THROUGH SOIL PITS AND/OR DIRECT WETLAND IMPACTS IS PROVIDED IN TABLE 1. 2. z o N PROVIDING NATIVE PLANTINGS WITHIN THE BUFFER WILL ENHANCE THE HABITAT OBSERVATIONS. Gy O`�N o THE WETLAND CREATION AREA WILL BE LOCATED ON THE SOUTHERN PORTION OF THE FUNCTIONS AND CRITICAL AREA PROTECTION PROVIDED BY THE SITE, IMPROVE IYv`II °No W M S. • WETLAND A:WETLAND A IS A PALUSTRINE EMERGENT,SEASONALLY SATURATED SUBJECT PROPERTY, ADJACENT TO/EXPANDING THE WESTERN BOUNDARY OF HYDROLOGY AND QUALITY OF WATER LEAVING THE PROJECT SITE,AND INCREASE OBJECTIVE 12-ESTABLISH FORESTED,SCRUB-SHRUB,AND EMERGENT WETLAND rTl �/ Q y� � o N SLOPE WETLAND. WETLAND FILL WILL RESULT IN THE PARTIAL LOSS OF THESE WETLAND A. THE WETLAND MITIGATION AREA HAS BEEN DESIGNED TO ENSURE THE BUFFER SCREENING BETWEEN THE WETLANDS, STREAM Z, AND PROPOSED HABITAT WITHIN THE WETLAND CREATION AREA WITH DIVERSE HORIZONTAL AND � P4 r C3 o p AREAS, AS WELL AS INDIRECT IMPACTS TO ADDITIONAL AREAS THAT WILL CREATED WETLAND AREA WILL BE PROTECTED BY A MINIMUM OF A 110-FOOT DEVELOPMENT. AREAS OF ESTABLISHED NATIVE VEGETATION WILL BE RETAINED. VERTICAL VEGETATION STRUCTURE AND SPECIES RICHNESS TO PROVIDE HABITAT z TRANSITION TO FUNCTION AS BUFFER. THE PORTIONS OF WETLAND A TO BE "PERIMETER BUFFER". ACCORDING TO LOCAL AND JOINT STATE AND FEDERAL OVERALL,THE PROPOSED PROJECT WILL RESULT IN A NET GAIN IN ECOLOGICAL FOR WETLAND-ASSOCIATED WILDLIFE. z /h N 0 FILLED ARE DEGRADED DUE TO MOWING,THE ENCROACHMENT OF NON-NATIVE GUIDANCE (WSDOE ET AL, 2021), CATEGORY III WETLANDS ADJACENT TO HIGH FUNCTIONS WHEN COMPARED TO THE EXISTING DEGRADED CONDITIONS OF THE ��II �/ F• z cw INVASIVE SPECIES,AND THE LACK OF NATIVE SHRUB AND TREE COVER THE INTENSITY LAND USES SHOULD HAVE A PROTECTIVE 150-FOOT PERIMETER BUFFER. EXISTING WETLAND BUFFERS. PERFORMANCE STANDARD 1.2.1-AT THE END OF YEAR 1,MINIMUM PLANT REMAINING PORTIONS OF WETLAND A OUTSIDE OF THE FOOTPRINT OF FILL HOWEVER,PER AMC 20.93.830(A)(1),A 110-FOOT BUFFER ASSOCIATED WITH MODERATE SURVIVORSHIP WITHIN THE WETLAND CREATION AREAS WILL BE AT 100 ACTIVITIES WILL BE FULLY RESTORED AND WILL DIVERSIFY THE COWARDIN LAND USE IMPACTS MAY BE IMPLEMENTED WHEN A RELATIVELY UNDISTURBED 3.1.3 MITIGATION RECOMMENDATIONS PERCENT OF THE NUMBER OF INSTALLED TREES AND SHRUBS(REPLACEMENT CLASSES AND HYDROPERIODS COMPARED TO EXISTING DEGRADED CONDITIONS. VEGETATED CORRIDOR AT LEAST 100-FEET WIDE IS MAINTAINED BETWEEN THE OF LOST PLANTS ALLOWED). NATIVE VOLUNTEER SPECIES MAY BE INCLUDED o0 6 .Nn WETLAND AND ANY OTHER PROTECTED AREAS, AND MINIMIZATION MEASURES THE WETLAND CREATION,WETLAND RESTORATION,WETLAND ENHANCEMENT,BUFFER ) �I CREATION, BUFFER ENHANCEMENT, AND BUFFER RESTORATION ACTIONS WILL IN THE COUNT. ce N o DESCRIBED IN AMC 20.93.830 TABLE 20.93-5 ARE IMPLEMENTED.THESE MEASURES WILL BE INCLUDE,BUT MAY NOT BE LIMITED TO,THE FOLLOWING RECOMMENDATIONS: n W C • WETLAND C:WETLAND C IS A PALUSTRINE EMERGENT,SEASONALLY SATURATED ENACTED ONSITE TO ALLOW FOR A 110-FOOT PERIMETER BUFFER SURROUNDING THE AND FLOODED DEPRESSIONAL WETLAND. WETLAND FILL WILL RESULT IN THE WETLAND CREATION AREA. CURRENTLY,THE AREA SURROUNDING THE WETLAND • PRE TREATINVASIVE PLANTS WITHIN THE WETLAND BUFFER AREAS WITH A PERFORMANCE STANDARD 1.2.2 - NATIVE WOODY VEGETATION IN THE PARTIAL LOSS OF THESE AREAS,AS WELL AS INDIRECT IMPACTS TO ADDITIONAL CREATION AREA CONSISTS OF HERBACEOUS PLANTS AND AREAS DEGRADED DUE TO WASHINGTON DEPARTMENT OF AGRICULTURE APPROVED HERBICIDE. AFTER WETLAND CREATION AREA WILL PROVIDE AT LEAST 20 PERCENT COVER BY I--I a0 z o AREAS THAT WILL TRANSITION TO FUNCTION AS BUFFER. THE PORTIONS OF MOWING,THE ENCROACHMENT OF NON-NATIVE INVASIVE SPECIES,AND LACK OF PRE-TREATMENT, GRUB TO REMOVE THE INVASIVE PLANTS AND REPLANT ALL YEAR 3,AT LEAST 30 PERCENT COVER BY YEAR 5,AT LEAST 50 PERCENT COVER m WETLAND C TO BE FILLED ARE DEGRADED DUE TO MOWING,THE ENCROACHMENT NATIVE TREES AND SHRUBS.FOLLOWING DEVELOPMENT,THE WETLAND CREATION CLEARED AREAS WITH NATIVE TREES,SHRUBS,AND GROUND COVERS LISTED IN BY YEAR 7,AND 75 PERCENT COVER BY YEAR 10. OF NON-NATIVE INVASIVE SPECIES,AND THE LACK OF NATIVE SHRUB AND TREE AREA WILL,BE SITUATED IN A PROTECTED CORRIDOR WITH WETLANDS A,B,AND C ON A THE PLAN SET. PRE-TREATMENT OF THE INVASIVE PLANTS SHOULD OCCUR A COVER. THE REMAINING PORTIONS OF WETLAND C OUTSIDE OF THE FOOTPRINT SITE DEVELOPED WITH A HIGH-DENSITY RESIDENTIAL PLAT THAT MEETS THE CRITERIA MINIMUM OF TWO WEEKS PRIOR TO REMOVAL; PERFORMANCE STANDARD 1.2.3-IN ALL MONITORING YEARS,THE WETLAND OF FILL ACTIVITIES WILL CONTINUE TO BE REPRESENTATIVE OF THE EXISTING OF A HIGH INTENSITY LAND USE. PORTIONS OF THE 110-FOOT PERIMETER BUFFER CREATION AREAS WILL HAVE AT LEAST 2 SPECIES OF NATIVE TREES AND 3 HYDROPERIODS AND WILL BE ENHANCED WITH NATIVE TREES AND SHRUBS THAT DOMINATED BY NON-NATIVE INVASIVE SPECIES AND WILL BE ENHANCED WITH NATIVE • EXCAVATE A WETLAND CREATION AND RESTORATION AREAS WITHIN/CONTIGUOUS SPECIES OF NATIVE SHRUBS. WILL DIVERSIFY THE COWARDIN CLASSES. PLANTINGS(SEE SECTION 3.1.2 BELOW)TO INCREASE BUFFER FUNCTIONS SURROUNDING WITH WETLAND A TO A SUFFICIENT DEPTH TO HOLD WETLAND HYDROLOGY; THE WETLAND CREATION SITE. THE WETLAND CREATION SITE WILL BE FURTHER • REMOVAL OF ALL TRASH,REFUSE,AND DEBRIS WITHIN THE MITIGATION AREAS; OBJECTIVE 1.3 - EFFECTIVELY CONTROL AND/OR ELIMINATE NON-NATIVE • WETLAND D:WETLAND D IS A PALUSTRINE SCRUB-SHRUB/EMERGENT,SEASONALLY PROTECTED BY THE ESTABLISHMENT OF A PROTECTIVE EASEMENT OR TRACT OVERS INVASIVE SPECIES FROM THE WETLAND CREATION AREA. Fq SATURATED DEPRESSIONAL WETLAND. WETLAND FILL WILL RESULT IN THE SURROUNDING THE WETLAND CREATION AREA AND SURROUNDING THE EXISTING • PISTE ALL MITIGATION AREAS WITH NATIVE TREES,SHRUBS,AND E RESPONSIBLE WETLANDS AND STREAMS FORMING A CONNECTED CORRIDOR ON THE WESTERN LISTED IN THE PLAN SET, OR SUBSTITUTES APPROVED BY THE RESPONSIBLE COMPLETE LOSS OF ALL ASSOCIATED WETLAND FUNCTIONS. PORTION OF THE SUBJECT PROPERTY. PROJECT SCIENTIST,TO HELP RETAIN SOILS,FILTER STORMWATER,AND INCREASE PERFORMANCE STANDARD 1.3.1-NON-NATIVE,INVASIVE PLANTS(EXCLUDING BIODIVERSITY; REED CANARY GRASS)WILL NOT MAKE UP MORE THAN 20 PERCENT COVER Table 1.Summary of Wetland Impacts • DURING ALL MONITORING YEARS. NON-NATIVE,INVASIVE PLANTS ARE PLANTS RETENTION OF ESTABLISHED NATIVE VEGETATION WHERE POSSIBLE; LISTED BY THE WASHINGTON STATE NOXIOUS WEED BOARD. Onsite THE GOAL OF THE PROPOSED COMPENSATORY WETLAND CREATION IS TO CREATE A WSDOE Impact LARGER, HIGHER FUNCTIONING FORESTED AND/OR SCRUB-SHRUB DEPRESSIONAL • AN APPROVED NATIVE SEED MIX WILL BE USED TO SEED THE DISTURBED AREAS Wetland HGM Cowazdint Wetland Impact Area R PERFORMANCE STANDARD 1.3.2 - REED CANARY GRASS COVER WILL BE o Rating Area Type WETLAND ON THE SOUTHERN PORTION OF THE SUBJECT PROPERTY BY EXPANDING AFTER PLANTING; WETLAND A.THE EXISTING WETLAND AREAS PROPOSED TO BE IMPACTED ONSITE REDUCED COMPARED TO BASELINE CONDITIONS ESTABLISHED IMMEDIATELY MAINTAIN AND CONTROL INVASIVE PLANTS ANNUALLY,AT A MINIMUM,OR MORE PRIOR TO THE MITIGATION ACTIONS:15 PERCENT REDUCTION BELOW BASELINE 22,644 SF' 1,499 Sh' CONSIST OF PREDOMINANTLY EMERGENT SLOPE/DEPRESSIONAL WETLANDS WITH FREQUENTLY IF NECESSARY.MAINTENANCE TO REDUCE THE GROWTH AND SPREAD COVER BY YEAR 5,AND 30 PERCENT REDUCTION BELOW BASELINE BY YEAR 10. Q A Slope PEAII3 IV (032.c) Direct(fill) (0.034 ac) AREAS OF SEASONAL FLOODING AND SATURATION THAT ARE PARTIALLY DEGRADED BY OF INVASIVE PLANTS IS NOT RESTRICTED TO CHEMICAL APPLICATIONS BUT MAY 55 MOWING AND THE ENCROACHMENT OF NON-NATIVE INVASIVE SPECIES. INCLUDE HAND REMOVAL,IF WARRANTED; FURTHERMORE,WETLAND D IS ISOLATED IN THE LANDSCAPE.AS SUCH,THE PROPOSED 29,723 SN 9,783 Sh' WETLAND CREATION AREA ADJACENT TO WETLAND A WILL PROVIDE AN INCREASE IN • PROVIDE DRY SEASONIRRIGATION AS NECESSARY TO ENSURE NATIVE PLANT C Deptessiooal PEMBC III (0.68 ac) Direct(51l) (0.225 ac) WETLAND FUNCTIONS ONSITE. SURVIVAL; DIRECT EXTERIOR LIGHTS AWAY FROM THE CRITICAL AREAS WHEREVER POSSIBLE; NOTES D Depres=400el PSS/I'sNIDC N 117 SF Direct(fill) .00 SF THE WETLAND CREATION AREAS WILL BE EXCAVATED FROM UPLANDS WEST OF • AND 1 V 1 LJ a (0.003 ac) (�003 ac) WETLAND A. AT A MINIMUM,THE EXCAVATION SHOULD ACHIEVE A WATER TABLE • PLACE ALL ACTIVITIES THAT GENERATE EXCESSIVE NOISE(E.G,GENERATORS AND 1. SURVEY&SITE PLAN PROVIDED BY LAND 11,399 SF WITHIN TWELVE INCHES OF THE SOIL SURFACE DURING THE EARLY GROWING SEASON AIR CONDITIONING EQUIPMENT)AWAY FROM THE REMAINING CRITICAL AREAS TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, r;; 11 Total Direct Wetland Impacts FOR AT LEAST TWO CONSECUTIVE WEEKS.TOPOGRAPHY THROUGHOUT THE WETLAND WHERE FEASIBLE. WA 98223,360-652-9727 z 0.262 F CREATION AREA WILL BE VARIED TO IMPROVE THE DIVERSITY OF HYDROPERIODS IN C 19 2(.52,c) 690 SF 0 A Slope PEMB IV Rtdixecr THE LANDSCAPE. IN ORDER E ENSURE ADEQUATE HYDROLOGY IS ACHIEVED 3.2 APPROACH AND BEST MANAGEMENT PRACTICES 2. SOURCE DRAWING WAS MODIFIED BYSOUNDVIEW 072 ac 11,31 ac THROUGHOUT THE WETLAND CREATION AREA,EXISTING DRAINAGE PATTERNS WILL 21,723 SP 11,313 SP ONSITE MITIGATION ACTIONS WILL PROVIDE INCREASED WETLAND FUNCTIONS AND CONSULTANTS FOR VISUAL ENHANCEMENT. AA C Depressional PEMBC III 0.65 ac) Indrrect 10."60 ac NEED TO BE MODIFIED. PORTIONS OF THE DITCH SEPARATING WETLANDS A AND B WETLAND AND STREAM PROTECTIONS BY THE MAINTENANCE OR IMPROVEMENT OF WILL BE FILLED SO THAT HYDROLOGY DOES NOT DRAIN FROM WETLAND B AND LEAVE WETLAND AND WETLAND AND STREAM BUFFER FUNCTIONS ONSITE. MITIGATION A Total Indirect Wedand Im 12,003 SF THE SITE BEFORE REACHING THE WETLAND CREATION AREA. THE WETLAND a pac ) ACTIONS SHOULD OCCUR IMMEDIATELY AFTER GRADING IS COMPLETE. TEMPORARY 0.276 ac CREATION AREA WILL BE CONSTRUCTED WITH AN OUTLET THAT MAINTAINS EXISTING EROSION AND SEDIMENT CONTROL SC MEASURES WILL BE IMPLEMENTED THAT ❑i 1. C-r t}VSDOE radng sye (H,.by and Yah,S,2023)p,,NIC 20.93.800. (TESC) DRAINAGE TO THE DITCH AND STREAM Z FURTHER DOWNGRADIENT,HOWEVER,THE z. Fzd�l c g phlc Data C K (M13) I b azd o ', mn.Pss Pat one S Nb SI-b,PEN[-NI-t-, OUTLET WILL INCORPORATE A BEAVER DAM ANALOG TO SLOW RUNOFF LEAVING THE CONSIST OF HIGH-VISIBILITY FENCING(HVF)INSTALLED AROUND NATIVE VEGETATION DATE: 12�31/2025 Fme.,a_Nr df 1,w. R.g--Sp..lS ..�aa_r S.. sally sa A; --fly Plodded ALONG THE REDUCED PERIMETER OF THE BUFFER, SILT FENCING BETWEEN THE CREATION AREA AND PROVIDE AN ADDITIONAL MECHANISM TO SUSTAIN WETLAND GRADED AREAS AND UNDISTURBED BUFFER, PLASTIC SHEETING ON STOCKPILED ' HYDROLOGY. ORGANIC TOPSOIL CAN BE ADDED TO THE WETLAND CREATION SITE AS MATERIALS,AND SEEDING OF DISTURBED SOILS. THESE TESC MEASURES SHOULD BE ® SCALE: AS SHOWN a' 1.1.2 BUFFER IMPACTS NEEDED TO PROVIDE A SUITABLE SUBSTRATE FOR NATIVE PLANTINGS;TOPSOIL MAY BE INSTALLED PRIOR TO THE START OF DEVELOPMENT OR MITIGATION ACTIONS AND e THE SOURCED FROM ONSITE OR AN APPROVED OFFSITE SUPPLIER PROJECT REQUIRES 2,467 SQUARE FEET OF PERMANENT IMPACTS TO THE BUFFERS . BY; I Q Q ACTIVELY MANAGED FOR THE DURATION OF THE PROJECT. MW 9 m OF WETLANDS A,B,AND C,OFFSITE WETLAND 1,AND STREAM Z,AS WELL AS 61,374 SQUARE FEET OF ADDITIONAL TEMPORARY BUFFER IMPACTS ASSOCIATED WITH SITE ALL EQUIPMENT STAGING AND MATERIALS STOCKPILES SHALL BE KEPT OUT OF THE Knowwhat's below. GRADING, THE CONSTRUCTION OF A PEDESTRIAN TRAIL, AND THE THROUGH CAREFUL DESIGN AND UTILIZATION OF BEST AVAILABLE SCIENCE,THE W a CONSTRUCTION/INSTALLATION OF STORMWATER OUTFALLS/DISPERSION TRENCHES. MITIGATION PLAN HAS A HIGH PROBABILITY OF SUCCESS AND PERSISTENCE. THE CRITICAL AREAS AND ASSOCIATED BUFFERS,AND THE AREA WILL NEED TO BE KEPT FREE OF SPILLS AND/OR HAZARDOUS MATERIALS. ALL FILL MATERIAL FOR SITE Call before you dig. JOB#: 2419.0002 g e SHEET: M5.0 _'s r�a FINAL MITIGATION PLAN 2/2 MITIGATION PLAN THE DEPTH OF THE PIT SHOULD ACCOMMODATE THE ENTIRE ROOT SYSTEM. DO NOT ARISE. SHOULD ANY PORTIONS OF THE MITIGATION AREAS FAIL TO MEET THE C N PERFORMANCE STANDARD 4.1.2 - NATIVE WOODY VEGETATION IN THE SUCCESS CRITERIA,A CONTINGENCY PLAN WILL BE DEVELOPED AND IMPLEMENTED O WETLAND BUFFER MITIGATION AREAS WILL PROVIDE AT LEAST 20 PERCENT BROKEN ROOTS SHALL BE PRUNED WITH A SHARP INSTRUMENT AND ROOTBALLS SHALL WITH AGENCY APPROVAL.SUCH PLANS ARE ADAPTIVE AND SHOULD BE PREPARED ON A PERFORMANCE STANDARD 1.4.3-STATE-LISTED, CLASS-A NOXIOUS WEEDS, COVER BY YEAR 3,AT LEAST 30 PERCENT COVER BY YEAR 5,AT LEAST 50 BE THOROUGHLY SOAKED PRIOR TO INSTALLATION. SET PLANT MATERIAL.UPRIGHT IN CASE-BY-CASE BASIS TO REFLECT THE FAILED MITIGATION CHARACTERISTICS. 4 0 ti ti PURPLE LOOSESTRIFE (LYTHRUM SALICARIA), AND ALL NON-NATIVE PERCENT COVER BY YEAR 7,AND 75 PERCENT COVER BY YEAR 10. THE PLANTING PIT TO PROPER GRADE AND ALIGNMENT.WATER PLANTS THOROUGHLY CONTINGENCY PLANS CAN INCLUDE ADDITIONAL PLANT INSTALLATION, EROSION '--1 (A Iq 't? KNOTWEEDS AND HYBRIDS, AND HYBRIDS INCLUDING POLYGONUM MIDWAY THROUGH BACKFILLING AND ADD AGRIFORM TABLETS. WATER PITS AGAIN CONTROL,AND PLANT SUBSTITUTIONS INCLUDING TYPE,SIZE,AND LOCATION. THE i--1 (L) m CUSPIDATUM,P.POLYSTACHYUM,P.SACHALINENSE,P.BOHEMICUM,ETC.WILL PERFORMANCE STANDARD 4.1.3-IN ALL MONITORING YEARS,THE BUFFER UPON COMPLETION OF BACKFILLING. NO FILLING SHALL OCCUR AROUND TRUNKS OR CONTINGENCY MEASURES OUTLINED BELOW CAN ALSO BE UTILIZED IN PERPETUITY TO � N N , BE ERADICATED FROM THE WETLAND CREATION AREA DURING ALL MITIGATION AREAS WILL HAVE AT LEAST 2 NATIVE TREE SPECIES AND 4 NATIVE STEMS.DO NOT USE FROZEN OR MUDDY MIXTURES FOR BACKFILLING.FORM A RING OF MAINTAIN THE WETLANDS AND BUFFERS ASSOCIATED WITH THE PROPOSED PROJECT ____1 -� F LL O MONITORING YEARS. SHRUBS SPECIES. SOIL AROUND THE EDGE OF EACH PLANTING PIT TO RETAIN WATER AND INSTALL A 4- U TO 6-INCH LAYER OF MULCH AROUND THE BASE OF EACH CONTAINER PLANT. Uj J Uj GOAL 2-RESTORE A MINIMUM OF 21,145 SQUARE FEET OF WETLAND A ADJACENT TO OBJECTIVE 4.2 - EFFECTIVELY CONTROL AND/OR ELIMINATE NON-NATIVE THIS PROJECT PROPOSES 10 YEARS OF MONITORING FOR THE WETLAND MITIGATION THE WETLAND CREATION AREA TO PROVIDE A MODERATE LEVEL OF HABITAT INVASIVE SPECIES IN THE BUFFER ENHANCEMENT AREAS. TEMPORARY IRRIGATION SPECIFICATIONS ACTIONS IN COMPLIANCE WITH THE GOALS AND PERFORMANCE STANDARDS OUTLINED O FUNCTIONS. WHILE THE NATIVE SPECIES SELECTED FOR MITIGATION ACTIONS ARE HARDY AND IN SECTION 3.3 OF THIS REPORT. HOWEVER,USACE MAY REQUEST ADDITIONAL YEARS (,y TYPICALLY THRIVE IN NORTHWEST CONDITIONS AND THE PROPOSED ACTIONS ARE OF MONITORING AND FORMAT.REPORTING IF THE SITE HAS NOT MET THE GOALS AND V � PERFORMANCE STANDARD NO-NON-NATIVE INVASIVE PLANTS(EXCLUDING (D)O t6 PLANNED IN AREAS WITH SUPFICIENT HYDROPERIODS FOR THE SPECIES SELECTED, PERFORMANCE STANDARDS BY YEAR 10. IN COMPLIANCE WITH 33 CFR 332.7 2,THE REED CANARY GRASS)WILL NOT MAKE UP MORE THAN 20 PERCENT COVER d N OBJECTIVE 2.1-INCREASE NATIVE WOODY PLANT COVER WITHIN THE WETLAND SOME INDIVIDUAL PLANTS MIGHT PERISH DUE TO DRY CONDITIONS. THEREFORE, MITIGATION AREAS ON THE PROJECT SITE WILL BE MAINTAINED IN PERPETUITY BY THE DURING ALL MONITORING YEARS. NON-NATIVE INVASIVE PLANTS ARE PLANTS J c� RESTORATION AREA TO CREATE DIVERSE HORIZONTAL AND VERTICAL IRRIGATION OR REGULAR WATERING MAY BE PROVIDED AS NECESSARY FOR THE LANDOWNER NO ADDITIONAL FORMAT. REPORTING BEYOND THE YEAR 10 M U VEGETATION STRUCTURE AND ADDITIONAL WILDLIFE HABITAT. LISTED BY THE WASHINGTON STATE NOXIOUS WEED BOARD. DURATION OF THE FIRST TWO GROWING SEASONS,TWO TIMES PER WEEK WHILE THE MONITORING REPORT IS REQUIRED AT THIS TIME. Q� NATIVE PLANTINGS BECOME ESTABLISHED. IP USED, IRRIGATION WILL BE 1 1_ C PERFORMANCE STANDARD 2.1.1-AT THE END OF YEAR 1,MINIMUM PLANT PERFORMANCE STANDARD 4.2.2-DURING ALL MONITORING YEARS,REED DISCONTINUED AFTER TWO GROWING SEASONS. FREQUENCY AND AMOUNT OF I� N z SURVIVORSHIP WITHIN THE WETLAND RESTORATION AREA WILL BE AT LEAST CANARY GRASS COVER WILL NOT EXCEED THE BASELINE PERCENT COVER IRRIGATION WILL BE DEPENDENT UPON CLIMATIC CONDITIONS AND MAY REQUIRE CONTINGENCY/MAINTENANCE ACTIVITIES MAY INCLUDE,BUT ARE NOT LIMITED TO: N H 100 PERCENT OF THE NUMBER OF INSTALLED TREES AND SHRUBS. ESTABLISHED DURING YEAR 0(AS-BUILT). MORE OR LESS FREQUENT WATERING THAN TWO TIMES PER WEEK. 1. USING PLUGS INSTEAD OF SEED FOR EMERGENT VEGETATION COVERAGE WHERE rl y 0 p SEEDED MATERIAL DOES NOT BECOME WELL-ESTABLISHED; 7j Q �y z z PERFORMANCE STANDARD 2.1.2 - NATIVE WOODY VEGETATION IN THE PERFORMANCE STANDARD 4.2.3-STATE-LISTED,CLASS-A NOXIOUS WEEDS, INVASIVE PLANT CONTROL AND REMOVAL 2. REPLACING PLANTS LOST TO VANDALISM,DROUGHT,OR DISEASE,AS NECESSARY; :6 WETLAND RESTORATION AREA WILL PROVIDE AT LEAST 20 PERCENT COVER BY PURPLE LOOSESTRIFE (LYTHRUM SALICARIA), AND ALL NON-NATIVE INVASIVE SPECIES ONSITE TO BE REMOVED INCLUDE HIMALAYAN BLACKBERRY,REED 3. REPLACING ANY PLANT SPECIES WITH A 20 PERCENT OR GREATER MORTALITY Q c x YEAR 3,AT LEAST 30 PERCENT COVER BY YEAR 5,AT LEAST 50 PERCENT COVER KNOTWEEDS AND HYBRIDS, AND HYBRIDS INCLUDING POLYGONUM CANARYGRASS,AND ANY LISTED NOXIOUS WEEDS OR OTHER INVASIVE SPECIES THAT RATE APTER TWO GROWING SEASONS WITH THE SAME SPECIES OR NATIVE �� 4) CUSPIDATUM,P.POLYSTACHYUM,P.SACHALINENSE,P.BOHEMICUM,ETC.WILL ARE EXISTING OR MAY COLONIZE THE MITIGATION AREA. THESE SPECIES ARE FOUND SPECIES OF SIMILAR FORM AND FUNCTION; E BY YEAR 7,AND 75 PERCENT COVER BY YEAR 10. c BE ERADICATED FROM THE BUFFER ENHANCEMENT AREA DURING ALL NEARBY;THEREFORE,TO ENSURE THESE SPECIES DO NOT EXPAND FOLLOWING THE 4. IRRIGATING THE MITIGATION AREAS ONLY AS NECESSARY DURING DRY WEATHER O r• MONITORING YEARS. MITIGATION ACTIONS,INVASIVE SPECIES WITHIN THE MITIGATION AREAS WILL BE IF PLANTS APPEAR TO BE TOO DRY,WITH A MINIMAL QUANTITY OF WATER; PERFORMANCE STANDARD HAVE -IN ALL MONITORING YEARS,THE WETLAND O O PRETREATED WITH A ROOT KILLINGHERBICIDE APPROVED FOR USE IN AQUATIC SITES 5. RESEEDING AND/OR REPAIR OF WETLAND AND BUFFER AREAS AS NECESSARY IF ENHANCEMENT AREAS WILL HAVE AT LEAST 2 SPECIES OF NATIVE TREES AND 3 I W Mp� SPECIES OF NATIVE SHRUBS. 3.4 PLANT MATERIALS AND INSTALLATION (E.G,E.G.GLYPHOSATE 5.4 CONTAINING HERBICIDE)A MINIMUM OF TWO WEEKS PRIOR EROSION OR SEDIMENTATION OCCURS; TO BEING REMOVED FROM THE WETLAND AND STREAM BUFFERS.THE PRE-TREATMENT 6. SPOT TREAT NON-NATIVE INVASIVE PLANT SPECIES;AND � WITH HERBICIDE SHALL OCCUR PRIOR TO ALL PLANNED MITIGATION ACTIONS,AND OBJECTIVE 22 - EFFECTIVELY CONTROL NON-NATIVE INVASIVE SPECIES PLANT MATERIALS 7. REMOVING ALL TRASH OR UNDESIRABLE DEBRIS FROM THE BUFFER AREA AS � �+ WITHIN THE WETLAND ENHANCEMENT AREAS.PERFORMANCE STANDARD 2.2.1 ALL PLANT MATERIALS TO BE USED FOR MITIGATION ACTIONS SHALL BE NURSERY SPOT TREATMENT OF ANY SURVIVING OTHER INVASIVE VEGETATION SHOULD BE NECESSARY. PERFORMED AGAIN EACH FALL PRIOR TO LEAP SENESCENCE FOR A MINIMUM OF THREE � -NON-NATIVE INVASIVE PLANTS,EXCLUDING REED CANARYGRASS,WILL NOT GROWN STOCK FROM A REPUTABLE,LOCAL SOURCE. ONLY NATIVE SPECIES ARE TO BE YEARS N C7 MAKE UP MORE THAN 20 PERCENT COVER DURING ALL MONITORING YEARS. USED;NO HYBRIDS OR CULTIVARS SHALL BE ALLOWED. PLANT MATERIAL PROVIDED 3.8 CRITICAL AREA PROTECTIVE MEASURES NON-NATIVE INVASIVE PLANTS ARE PLANTS LISTED BY THE WASHINGTON WILL BE TYPICAL OF THEIR SPECIES OR VARIETY;IF NOT CUTTINGS THEY WILL EXHIBIT LONG-TERM PROTECTION OF THE MITIGATION SITE SHALL BE PROVIDED BY NORMAL,DENSELY DEVELOPED BRANCHES AND VIGOROUS,FIBROUS ROOT SYSTEMS. 3.5 MAINTENANCE&MONITORING PLAN STATE NOXIOUS WEED BOARD. PLACEMENT IN AN ENVIRONMENTALLY CRITICAL AREAS EASEMENT DEDICATED TO PLANTS SHALL BE SOUND,HEALTHY,VIGOROUS PLANTS FREE FROM DEFECTS,AND ALL CONCEPTUAL MAINTENANCE AND MONITORING PLANS ARE DESCRIBED BELOW IN THE CITY OF ARLINGTON AS REQUIRED PER AMC 20.93.290,WHICH WILL PRECLUDE PERFORMANCE STANDARD 2.2.2-DURING ALL MONITORING YEARS,REED FORMS OF DISEASE AND INFESTATION. ACCORDANCE WITH AMC 20.93.390, AND ANTICIPATED CONDITIONS FROM OTHER GRADING OR ANY RECONTOURING OF THE LAND,PLACEMENT OF STRUCTURES,WELLS, o REGULATORY AGENCIES.THE APPLICANT IS COMMITTED TO COMPLIANCE WITH THE V o CANARY GRASS COVER WILL NOT EXCEED THE BASELINE PERCENT COVER LEACH FIELDS,UTILITY LINE,AND/OR OTHER EASEMENTS,AND ANY OTHER THING; z N CONTAINER STOCK SHALL HAVE BEEN GROWN IN ITS DELIVERY CONTAINER FOR NOT MITIGATION PLAN AND OVERALL SUCCESS OF THE PROJECT.AS SUCH,THE APPLICANT o ESTABLISHED DURING YEAR 0(AS-BUILT). WILL CONTINUE TO MAINTAIN THE MITIGATION AREAS,KEEPING THE SITE FREE FROM VEHICLE ACTIVITY,GRAZING,DUMPING,AND THE ADDITION OR REMOVAL OF ANY O z W o LESS THAN SIX MONTHS BUT NOT MORE THAN TWO YEARS.PLANTS SHALL NOT EXHIBIT OF NON-NATIVE INVASIVE VEGETATION,TRASH,AND YARD WASTE. VEGETATION UNLESS PURSUANT TO AN APPROVED RESTORATION PLAN IN PERPETUITY. o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z o No KNOTWEEDS AND HYBRIDS, AND HYBRIDS INCLUDING POLYGONUM APPROVED METHOD.THE MIXTURE IS SPECIFIED IN THE PLAN SET. MAINTENANCE TO ENSURE THE MITIGATION ACTIONS ARE SUCCESSFUL. THEREFORE, EASEMENT WILL INCLUDE APPROPRIATE SIGNS AND FENCING TO MARK THE CUSPIDATUM,P.POLYSTACHYUM,P.SACHAUNENSE,P.BOHEMICUM,ETC.WILL O W o THE MITIGATION AREAS WILL LI MONITORED FOR A PERIOD OF TEN YEARS,WITH BOUNDARIES AND PREVENT INTRUSION. r4 ,,/ z M ERADICATED FROM THE WETLAND ENHANCEMENT AREA DURING ALL ALL PLANT MATERIAL SHALL BE INSPECTED BY THE PROJECT SCIENTIST UPON FORMAL INSPECTIONS BY A QUALIFIED PROJECT SCIENTIST.MONITORING EVENTS WILL Z W z -P o vNi MONITORING YEARS. J BE SCHEDULED AT THE TIME OF CONSTRUCTION,30 DAYS AFTER PLANTING,AND Q �i � S. DELIVERY.PLANT MATERIAL NOT CONFORMING TO THE SPECIFICATIONS BELOW SHALL AS A CONDITION OF THE 401 WATER QUALITY CERTIFICATION, A DRAFT DEED F--I m GOAL 3-ENHANCE A MINIMUM OF 19,938 SQUARE FEET OF WETLAND C TO PROVIDE A BE REJECTED AND REPLACED BY THE PLANTING CONTRACTOR. REJECTED PLANT MINIMALLY ON AN ANNUAL BASIS DURING YEARS 1,2,3, 5,7,AND 10. CLOSEOUT NOTIFICATION SHALL BE SUBMITTED TO THE WASHINGTON STATE DEPARTMENT OF z /h 0 y o MODERATE LEVEL OF HABITAT FUNCTIONS. MATERIALS SHALL BE IMMEDIATELY REMOVED FROM THE SITE. 0 MONITORING WILL ALSO OCCUR IN YEAR 10. DELINEATION OF COMPENSATORY `/ N 0 F v o ECOLOGY PRIOR RECORDING,AND PROOF OF RECORDING SHALL BE DOCUMENTED IN THE AS-BUILT R WETLAND CREATION AREAS BY A QUALIFIED WETLAND SCIENTIST WILL BE CONDUCTED E EPORT. Z p o 0 FERTILIZER SHALL BE IN THE FORM OF AGRIFORM PLANT TABS OR AN APPROVED LIKE YEARS 5 AND 10 TO ENSURE THE SUCCESS OF THE COMPENSATORY ACTIONS. r�, OBJECTIVE -INCREASE NATIVE WOODY PLANT COVER WITHIN THE WETLAND W WETLAND DELINEATIONS WILL BE CONDUCTED IN ACCORDANCE WITH THE 1987 ARMY //''11 j U o 0 ENHANCEMENT AREAS TO CREATE DIVERSE HORIZONTAL AND VERTICAL FORM. MULCH SHALL CONSIST OF STERILE WHEAT STRAW FOR SEEDED AREAS (IF CORPS OF ENGINEERS DELINEATION MANUAL(ENVIRONMENTAL LABORATORY,1987) 3.9 FINANCIAL ASSURANCES NECESSARY)AND CLEAN RECYCLED WOOD CHIPS APPROXIMATELY%-INCH TO 1-INCH IN 6 .n VEGETATION STRUCTURE AND ADDITIONAL WILDLIFE HABITAT. AND THE REGIONAL SUPPLEMENT TO THE CORPS OF ENGINEERS WETLAND UNDER AMC 20.93.390(5),PERFORMANCE SECURITY IS REQUIRED TO ASSURE THAT ALL N o SIZE AND'A-INCH THICK FOR WOODY PLANTS.THE MULCH MATERIAL MAY BE SOURCED DFi inrFa RON MANUAL WESTERN MOUNTAINS LE, VALYS, AND COAST REGION ACTIONS APPROVED UNDER THIS MITIGATION PLAN ARE SATISFACTORILY COMPLETED FROM NON-INVASIVE WOODY MATERIALS SOURCED FROM THE LAND CLEARING (VERSION 2) SACE,2010), IN ACCORDANCE WITH THE MITIGATION PLAN, PERFORMANCE STANDARDS, AND PERFORMANCE STANDARD 3.1.1-AT THE END OF YEAR 1,MINIMUM PLANT ACTIVITIES. ) r SURVIVORSHIP WITHIN THE WETLAND ENHANCEMENT AREA WILL BE AT LEAST REGULATORY CONDITIONS OF APPROVAL. PRIOR TO FINAL INSPECTION, A r-j �.1 MAINTENANCE AND WARRANTY SECURITY(BOND)SHALL BE OBTAINED ACCORDING TO f-I N 100 PERCENT OF THE NUMBER OF INSTALLED TREES AND SHRUBS. MONITORING WILL CONSIST OF PERCENT COVER MEASUREMENTS AND STEM COUNTS I--I z o PLANT SCHEDULING,SPECIES,SIZE,AND SPACING THE CONDITIONS OF APPROVED DEVELOPMENT AGREEMENTS WITH THE CITY AND AT PERMANENT MONITORING STATIONS, WALK-THROUGH SURVEYS TO IDENTIFY m PERFORMANCE STANDARD 3.1.2 - NATIVE WOODY VEGETATION IN THE PLANT INSTALLATION SHALL OCCUR AS CLOSE TO CONCLUSION OF THE CONSTRUCTION INVASIVE SPECIES PRESENCE AND DEAD OR DYING ENHANCEMENT PLANTINGS, APPROPRIATE PERMITTING AGENCIES. WETLAND ENHANCEMENT AREA WILL PROVIDE AT LEAST 20 PERCENT COVER ACTIVITIES AS POSSIBLE TO LIMIT EROSION AND LIMIT THE TEMPORAL LOSS OF PHOTOGRAPHS TAKEN AT FIXED PHOTO POINTS, WILDLIFE OBSERVATIONS, AND BY YEAR 3,AT LEAST 30 PERCENT COVER YEAR 5,AT LEAST 50 PERCENT FUNCTION PROVIDED BY THE WETLANDS,STREAM AND BUFFERS. ALL PLANTING WILL GENERAL QUALITATIVE HABITAT AND WETLAND FUNCTION OBSERVATIONS. DATA COVER YEAR 7,AND 75 PERCENT COVER BY YEAR 10. OCCUR BETWEEN SEPTEMBER 1 AND MAY 1 TO ENSURE PLANTS DO NOT DRY OUT AFTER COLLECTED DURING MONITORING VISITS WILL BE APPROPRIATE FOR THE INSTALLATION,OR TEMPORARY IRRIGATION MEASURES MAY BE NECESSARY. PERFORMANCE STANDARDS OF THE RELEVANT MONITORING YEAR. THE PERMANENT MONITORING STATIONS WILL BE ESTABLISHED SUCH THAT THE MITIGATION SITE IS PERFORMANCE STANDARD 3.1.3-IN ALL MONITORING YEARS,THE WETLAND QUALITY CONTROL FOR PLANTING PLAN REPRESENTATIVELY SAMPLED. CIRCULAR SAMPLE PLOTS,APPROXIMATELY 30 FEET IN ENHANCEMENT AREAS WILL HAVE AT LEAST 2 SPECIES OF NATIVE TREES AND 3 ALL PLANT MATERIAL SHALL BE INSPECTED BY THE QUALIFIED PROJECT SCIENTIST DIAMETER(706 SQUARE FEET),WILL BE CENTERED AT EACH MONITORING STATION. �✓' SPECIES OF NATIVE SHRUBS. UPON DELIVERY. PLANT MATERIAL.NOT CONFORMING TO THE SPECIFICATIONS ABOVE SAMPLE PLOTS WILL BE LOCATED ENTIRELY WITHIN THE PROPOSED MITIGATION SITE. WILL BE REJECTED AND REPLACED BY THE PLANTING CONTRACTOR. REJECTED PLANT SAMPLE PLOT SHAPES MAY NEED TO BE ADJUSTED TO ENSURE THAT SAMPLE PLOTS DO OBJECTIVE 3.2-EFFECTIVELY CONTROL NON-NATIVE INVASIVE SPECIES WITHIN MATERIALS SHALL BE IMMEDIATELY REMOVED FROM THE SITE. UNDER NO NOT CROSS THE MITIGATION SITE BOUNDARIES; ADJUSTED SAMPLE PLOT SHAPES THE WETLAND ENHANCEMENT AREAS. CIRCUMSTANCES SHALL CONTAINER STOCK BE HANDLED BY THEIR TRUNKS,STEMS,OR SHOULD MAINTAIN THE SAME AREA AS THE 30-FOOT-DIAMETER CIRCULAR SAMPLE TOPS. PLOTS. MEAN SURVIVORSHIP AND PERCENT COVER MEASUREMENTS FROM THE SAMPLE PERFORMANCE STANDARD 3.2.1-NON-NATIVE INVASIVE PLANTS,EXCLUDING PLOTS WILL BE USED TO ESTIMATE SURVIVORSHIP AND PERCENT COVER ACROSS THE ° REED CANARYGRASS,WILL NOT MAKE UP MORE THAN 20 PERCENT COVER THE LANDSCAPE CONTRACTOR SHALL PROVIDE THE RESPONSIBLE PROJECT SCIENTIST MITIGATION SITE. , DURING ALL MONITORING YEARS. NON-NATIVE INVASIVE PLANTS ARE PLANTS WITH DOCUMENTATION OF PLANT MATERIAL THAT INCLUDES THE SUPPLYING ° LISTED BY THE WASHINGTON STATE NOXIOUS WEED BOARD. NURSERY CONTACT INFORMATION,PLANT SPECIES,PLANT QUANTITIES,AND PLANT TO DETERMINE SURVIVORSHIP, INDIVIDUAL TREE AND SHRUB STEMS WITHIN THE Q SIZES. RELEVANT CIRCULAR SAMPLING PLOTS WILL BE COUNTED. PLANTS WHICH GROW Q PERFORMANCE STANDARD 3.2.2-DURING ALL MONITORING YEARS,REED SEVERAL STEMS FROM A SINGLE BASE WILL BE COUNTED AS ONE INDIVIDUAL PLANT. CANARY GRASS COVER WILL NOT EXCEED THE BASELINE PERCENT COVER PRODUCT HANDLING,DELIVERY AND STORAGE THESE TREES AND SHRUBS WILL THEN BE RECORDED AS DEAD/DYING OR ALIVE. TO ESTABLISHED DURING YEAR 0(AS-BUILT). ALL SEED AND FERTILIZER SHALL BE DELIVERED IN ORIGINAL, UNOPENED, AND DETERMINE PERCENT COVER AND SPECIES RICHNESS OF WOODY VEGETATION,EACH UNDAMAGED CONTAINERS SHOWING WEIGHT, ANALYSIS, AND NAME OF SPECIES OF TREE OR SHRUB WITHIN THE APPROXIMATELY 30-FOOT-DIAMETER CIRCULAR a PERFORMANCE STANDARD 3.2.3-STATE-LISTED,CLASS-A NOXIOUS WEEDS, MANUFACTURER. THIS MATERIAL SHALL BE STORED IN A MANNER TO PREVENT SAMPLING PLOTS WILL BE RECORDED AND IDENTIFIED AS NATIVE OR INVASIVE. PURPLE LOOSESTRIFE (LYTHRUM SALICAAIA), AND ALL NON-NATIVE WETTING AND DETERIORATION. ALL PRECAUTIONS CUSTOMARY IN GOOD TRADE PLANTS MAY BE RECORDED BY GENUS IF SPECIES IS UNABLE TO BE DETERMINED AT a KNOTWEEDS AND HYBRIDS, AND HYBRIDS INCLUDING POLYGONUM PRACTICE SHALL BE TAKEN IN PREPARING PLANTS FOR MOVING. WORKMANSHIP THAT THE TIME OF THE MONITORING VISIT. HERBACEOUS VEGETATION WILL BE SAMPLED NOTES FROM A 10-FOOT DIAMETER CUSPIDATUM,P.POLYSTACHYUM,P.SACHAUNENSE,P.BOHEMICUM,ETC.WILL FAILS TO MEET INDUSTRY STANDARDS WILL BE REJECTED. PLANTS WILL BE PACKED, THE CENTER OF EACH TREE SQUARE FEET),ESTABLISHED AT THE SAME LOCATION BE ERADICATED FROM THE WETLAND ENHANCEMENT AREA DURING ALL TRANSPORTED,AND HANDLED WITH CARE TO ENSURE PROTECTION AGAINST INJURY WI THIN AND SHRUB SAMPLE PLOT. HERBACEOUS VEGETATION 1. SURVEY&SITE PLAN PROVIDED BY LAND THIN THE SAMPLING PLOT WILL BE RECORDED TO AT LEAST THE GENUS LEVEL AND TECHNOLOGIES,INC.,18820 3RD AVE NE,ARLINGTON, ,jj MONITORING YEARS. AND FROM DRYING OUT. IF PLANTS CANNOT BE PLANTED IMMEDIATELY UPON W DELIVERY THEY SHALL BE PROTECTED WITH SOIL,WET PEAT MOSS,OR IN A MANNER IDENTIFIED AS NATIVE OR INVASIVE. A LIST OF OBSERVED TREE, SHRUB, AND WA 98223,360-652-9727 z ACCEPTABLE TO THE RESPONSIBLE PRO HERBACEOUS GENERA OR SPECIES, COVER ESTIMATES,AND WETLAND INDICATOR O GOAL 4- ENHANCE 138,152 SQUARE FEET OF BUFFER(WHICH INCLUDES 9,164 SQUARE J STATUS WILL BE INCLUDED WITHIN EACH MONITORING REPORT. in 0 PROJECT SCIENTIST. PLANTS,FERTILIZER,AND FEET OF BUFFER CREATION TO OFFSET 2,467 SQUARE FEET OF PERMANENT BUFFER MULCH NOT INSTALLED IMMEDIATELY UPON DELIVERY SHALL BE SECURED ON THE 2. SOURCE DRAWING WAS MODIFIED BY SOUNDVIEW tJ-' IMPACTS)AND IMPROVE ONSITE BUFFER FUNCTIONS BY CREATING NATIVE WOODY SITE TO PREVENT THEFT OR TAMPERING. NO PLANT SHALL BE BOUND WITH ROPE OR 3.6 REPORTING CONSULTANTS FOR VISUAL ENHANCEMENT. PLANT COMMUNITIES. WIRE IN A MANNER THAT COULD DAMAGE OR BREAK THE BRANCHES. PLANTS W TRANSPORTED ON OPEN VEHICLES SHOULD BE SECURED WITH A PROTECTIVE FOLLOWING CONSTRUCTION,AN AS-BUILT REPORT WILL BE SUBMITTED TO THE CITY OF COVERING TO PREVENT WINDBURN. ARLINGTON,WSDOE,AND THE USACE WITHIN 30 DAYS. THE AS-BUILT REPORT WILL m OBJECTIVE 4.1 - ESTABLISH 138,152 SQUARE FEET OF BUFFER INCLUDE PHOTOGRAPHS OF THE MITIGATION SITE UPON COMPLETION. '�a ENHANCEMENT/RESTORATION AREAS THAT ARE VEGETATED WITH NATIVE PREPARATION AND INSTALLATION OF PLANT MATERIALS ADDITIONALLY,A BRIEF MONITORING REPORT DETAILING THE CURRENT ECOLOGICAL DATE: 12/31/2025 WOODY PLANT COVER TO CREATE DIVERSE HORIZONTAL AND VERTICAL STATUS OF THE WETLAND CREATION AND ENHANCEMENT AND THE BUFFER CREATION VEGETATION STRUCTURE AND WILDLIFE HABITAT. THE PLANTING CONTRACTOR SHALL VERIFY THE LOCATION OF ALL ELEMENTS OF THE AND ENHANCEMENT ACTIONS,MEASUREMENT OF PERFORMANCE STANDARDS,AND SCALE: AS SHQWN , N MITIGATION PLAN WITH THE RESPONSIBLE PROJECT SCIENTIST PRIOR TO MANAGEMENT RECOMMENDATIONS WILL BE PREPARED AND SUBMITTED TO THE CITY ' ® _ PERFORMANCE STANDARD 4.1.1-AT THE END OF YEAR 1,MINIMU LANT INSTALLATION.THE RESPONSIBLE PROJECT SCIENTIST RESERVES THE RIGHT TO ADJUST OF ARLINGTON,WSDOE,AND USACE BY OCTOBER 31 ST OF EACH MONITORING YEAR.M P g THE LOCATIONS OF LANDSCAPE ELEMENTS DURING THE INSTALLATION PERIOD Mw. SURVIVORSHIP WITHIN THE BUFFER MITIGATION AREAS WILL BE AT LEAST 100 BY: PERCENT OF THE NUMBER OF INSTALLED TREES AND SHRUBS. APPROPRIATE. IF OBSTRUCTIONS ARE ENCOUNTERED THAT ARE NOT SHOWN THEE =m DRAWINGS,PLANTING OPERATIONS SHALL CEASE UNTIL ALTERNATE PLANT LOCATIONS IONS 3.7 CONTINGENCY PLAN AND LONG TERM MANAGEMENT ��3 HAVE BEEN SELECTED BY AND/OR APPROVED BY THE PROJECT SCIENTIST. IF MONITORING RESULTS INDICATE THAT PERFORMANCE STANDARDS ARE NOT BEING Know what's below. CIRCULAR PLANT PITS WITH VERTICAL SIDES WILL BE EXCAVATED FOR ALL CONTAINER MET,IT MAY BE NECESSARY TO IMPLEMENT ALL OR PART OF THE CONTINGENCY PLAN. Cull before you dig. JOB#: Zq e STOCK. THE PITS SHOULD BE AT LEAST 1.5 TIMES THE WIDTH OF THE ROOTBALL,AND CAREFUL ATTENTION TO MAINTENANCE IS ESSENTIAL IN ENSURING THAT PROBLEMS ➢ S M5.1002 SHEET: MS.1 r�a Appendix B - Grading Plans 2419.0002—Lindsay Annexation Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 A PORTION OF SECTION 25&26,TOWNSHIP 31 NORTH, RANGE 5 EAST,W.M. LEGEND H BohngSrc'han ExnJlg Sechan Jymbo/ I \ ® 0 \ � O _... uu (` I" •O ' W E E-r p.PoL h/ol WoyLoa ExaJhgM umen/ E hngL/ \� / 402 a -- E hngEwemenlLne Exahng Type lColch Bolin LU 1 EauhhgE91,Udeuro/k h Zc Existing wol N�/1 �n D ZN _ SQ xahng Soni/aySeweiMan ---`_I ho/e Pa• Q� \ I I ( O �N ------- --,619Mgo�CnluiG 03 Existing wol Mel e —————— EauhlgMlnC 1t11Z1e I RBSI W Exithn 38qq ___ __ Eauh wol Filh1 ngJ/Oroinage Lix g 8 IT9 ? I Q N --- --- Exahng Cmekkne Existing PowelJymbo/ 3 - E hng0/ch/ne 7 ' 4 ylLO ss -ss E hngSonilaySewerLne © Exrshng Te/ephone JymbW M ��, v �o- `�' r��+ 39z -6 `O w -w E hng Wol Lne Exahng Got Jymba/ " dQ •+' "' •`B1 a`3 "' W' X E hngFexe Qi p J ,D^ A„^'�� m 'fib °' 3g //R�yp Ex�OS ROW U L O w0 oxP -oxP E hngPowcvG 0### ExahngS ilzg 0 - Y'— z/2 ��.E 'D9 94_ - - NB9°IS'3S"W Z6dB B4 — H �M E,r gr kphone Lne v Eltm�q,r _ _ ` -� - - - - -- - - - - - - — --- - - - - __ - - t N.E� o m x.7 --c-- c-- E'h Gar Une _ _ _ a a o o _ - - — ' 9 z} Exnlh9[gh/ o ° _ — _ - _ _ _ =t _ _ - _ d d ConCTefe b I00 N 9 00 Fxahrg Wekond ® &S#19Ma7box _ o h _._ _ _ o se Ye B ass Pin I v— 172 Q �y'-r Existing Trees -. - _. �. ,_ o __- __ _ 1-.I ,Y @x w z F79Re oved � \ n\O �' i n :� .. Gar Eat en/]. 4 e Ito remain/ I A.N701701/ _ Exis7/ng Ties Eaah@q we//ondeuKa 'Yr�O� ®n»;< � /o be2moued �s I e x tl c nad) va ,1 O 1 i n9 onxewo d} ovedl �v Existing Weiland 33 lll� P g a v 2`plerz4 Ito be re o ugh I a �y9 < 1 Buffer Remo,ed -11Po/e1 431, u3'36 � I� \ F'n A d1 'i' g oba a ov dl r,� I E tiny 'zsw� i,:a a ' ��. b 9� o 'o John (e�1-073-� V Ifo be r i dy{� ✓Y ; ' & E VO W < �7 '� �\ 9 11 John6 K217dSl enna .� OKC2 1 B/1glon,WJ/NE 9 f J _ 1 i A�912 WA 99723 x I \ A ` D g t` �la ';Y 400 _ 310576Lb1,aM1Q7 1. � I I - 1 g -� "s :401 E I ✓M&Ob nab �i v� i I �y (�;- BO1C 172nd5!NE III e mry to be re o - 0 Aih lag WA 98229 E hng alll Y° j�--+ I e I ( � I' NI i. 1 b o d VE `TT S as decommss on ) I 404 ] 9 ° \ e I Eo bremaft �etll / 310J26�1,Po1,Po/ a°D P4 ` [Yj 4 J Shen SAW—All,Mallhrot Q/ 1V5 F3S ant NG B210172ndJ/NE S2 /o NADE 1 OM"•a.s•r p A l gla2 WA 99223 ^~ f✓J _�.N3Azg ppvprl __ _1� O 1 x� 'I ,D9 r� 1 ��� a —Ianoa �e Ito eflle 5 is9v 1 Y 'r'- L•.., — — — r\\q ,,/ \.-�3IQf25R71Q7511 II o a2a 310575-(M2-CU05Cb _1-22 SNAoguomdh/be o!/ndrons I �} i•-_1 b •. Z ` Y / �" �..�� _ '- - s 2 B./nLndroY is BJ10177ndS1.NE OI 8326172dS/NE Ahhg Wq 98773 2i AA)gl 2 WA Fe223 �m5 B/ r9 G/egoNBDeddK N y "'_ ®�a31a> 7a1/7cinAu N.E. _ 1 �, 0 1 Y � Resider � 9 AIAUlgm2 wA9BPP3 ��" � O�n �'� P ve lino pb 1 wu3 00005 P . P_2 �\ � \b �u fare e I �I o o I Wetl y tl _ 2 �C° N 52.2 *! y >m _ Ex eo' !ar •�;' e p cw7 7e1'�zld�®* -_ OVV ` h o s - sae s i r s ainlM .� CL 3 z 1052 I-022g7 � Q 3 h I6ft7J79MAve.NE R air Unknown Adieu /Sl __ fxnhn e Adn912 WA 9B773 b w etlan AAnglon WA 9B223 O I I 0 0 nI? ° ° o Q 4 0 -__ 8' D _ � Q Q Ha 9 Siao Berra 30 d 7�rrlS° R o� f O z If Q47J MAv NE -I ! . d a/� Yqf �' - Adh/on W 9B773 Y Z _O O a r J.YI1' a ExrS °� q.FN 1s73on g g P O Ex.30'O¢MbuhD EoFe 1 ,,, a f f/) Q JY �77a41 y 9/L41SY/759ondRNM1 -- •-p a 3 RY - _��� � � p `° K(L(�`, U Z Q� E.ea• w c ct b < X co w oQ V! 6lZ Q O� o�/'Do �� 4 °• �.='9� ° Y� b C m � V M / � 310526 7-0 v[� n 1 °• .p ��✓ O C AQUIFER RECHARGE/ c WELL HEAD PROTECTION o' .o Lour.o-loo SOILS EXISTING CONDITIONS MAP (EAST OF 79TH AVE.N.E.) 0 / 100, 200' T.WI Gravelly Medial Loam; Hydrologic Soil Group:B McKenna Gravelly Silt Loam Scale:1"=100' 0 Hydrologic Soil Group:D Compact Fill Area to 95%Modified Proctor a` 0 CONSTRUCTION DRAWING APPROVAL CALL AT LEAST 2 SHEET BUSINESS DAYS HIS PLAN SHEET HAS BEEN REVIEWED AND APPROVED C3 C38 PER THE CONDITIONS ON THE TITLE SHEET. of > BEFORE YOU DIG BY: 22x34 1-800-424-5555 DEVELOPMENT SERVICES MANAGER DATE: THIS APPROVAL VALID FOR 18 MONTHS - s./zzsr Lo1II4a A PORTION OF SECTION 25&26, HIP 3L NORT N E ST, 3,911sf att3s s J Lof 143 4,006 sf 0 I la y � Illil a Mi 420 ago W U Existing /'� ���-°. �$._ I � � Lo}t4t � q 1 � aim Upland Habitat Ditch "' -1 ---- - DeslgnSurfacelbPl F>/slrhgJvl ce/NP/ 0 01`-�_ ^ ho / 3�i1\sf X IIII�______ _ 1 «�z osi __�' /�o �\ O 7pO.N Refuge Island Bottom ` �_ / •�." � / i V s / A � n 410 '--- - --- 410 A S V o. _________________________ _ 2 C,0 o' I Lot 138 �- Lof 136 \ O " /' - < 11319 III 3,943 sf 4,440 sf \ W �`a - -------------------- 400 400 // — / 1100 H o 00 Q 3.601 sf LO1 5 Lot 26 / / 1' / -\ \ - _ - Pol sf 3,658 If /Lot 27 /LOf 28 I ;�\ < 1, `-_� -r J�l. -/� _ / 3.600 sf /3,824 f /�\ /. 9 - / II' / Z I l / 390 m I , i 4.Of3sf 0+00 1+00 2+00 3+00 4+00 5+00 5+50 / --/ ✓ I / _" / -x I � ✓ � / � x v a l 2o i p_„ ✓ 81 409 o ea o AA-SECTION SCALE:Herz I-10' lagvenl'-lo' \ lam' `✓\ �aY \/\\\.��,JJ/ / � �of3t 420 420 J - r>/ i 3,991 sf Upland Habitat / Lot x I Existing / / < O/��>\Wlan / r = i Refuge Peninsula Eirfin 9Tce- -- II _ I / / //� Lo}33 1 III Lot 36 xze� i % u 9 //W Ditch 1 `r S \ ` / �>� »/nz 9 f / / Bottom - 410 » --- 410 �\ \ \ .Ili 3,769 sf / f 1, 4,190 sf --- IN i 40 bsf /5 r Design Surface Itypl -_ ; 1 / `I ( -a V-9 / fl I.3. � / 3,991 sf I ✓A �r I �/ / � Dias • •' I /h I > �'h i o / / \ qf�/ - \ III / \ .735 st i 400 400 .J4 �> - J ,�✓1� 7 A I� / >� / I o^ i iA �I Mess `-� ✓`. 390 390 _ o o n 1 / Ir I � 1 Rertainetl \ / I \ wetland / �s \ ` A V °; e �g eg eg > /L. L / i\ I \ / / / 1I / \ _-\ I� O 0+00 1+00 2+00 3+00 4+00 5+00 5+50 /✓/� h / 1 \ \ / ' / BB-SECTION SCALE:Horz V=10' (a:q vert l°'=10' I � I// I I o / / / ° // / 406.0 420 420 ! ✓r l I C � \ / / / eveI�I�\ (� 7»zzb� I /i Existing ^-r \ \ / / o°y I I X __ } « 0 w m g ouj >a� Evilmg6 ce//An/ Upland Habitat v Ditch Design f " Refuge Island Bottom \'� I l ( \r A / / a4 _________ ____ __ ______________________ _ ___t" i - �l-x 4 w z U zO g 1 yP) I / - - - 410 — - 410 I /I J \ 4 / __ ____________ ______ __ __________ ____ ____________ ____ _ - w _ ( / __ __ __ _ ___ _________ ___ _ __________ _ __ _ � I � gV„ I I -- V C ! \ d I / _-o-_ � - I I 11zso �na d o o m a - -- Wetland creation \ 1 - ----- r---- ---- -------- � III I - ' f / d , -- - -- \ 1 , ------------------ - ---��------- --- it li / '1 »� /i-� I Dan - ; M. 400 --- 400 1 ) 1 \ I _ ___ _ _ _ ___ _ _____ _ _✓ __ ____� I/ / 17- S. a 390 390 _�11 P> «)sat-'fir ) 'dz N x hvn Q ¢ i 0+00 1+00 2+00 3+00 4+00 5+00 5+50 I 1 - --_ _ - CC-SECTION ( / / I \ g n s.q )� SCALE:Horz 1-10' pland abi}af I __ ____ _____ _____ _ _ ______________ (a:q Vert r'=1o• -_-� ----------- _ _ _ _ _ -\----- 'I ICI ` 1 -� 18 a z 420 420 I I I 1 1 1 I/ I $ \ _ ____ _________ _ I xeos veos� -/ _____ New_:_________ _ ::_�? 1 o- } I " z o Z \ \ ( \ $el efuge I Nfetand I \j N insula I _ _�1g411o0:: ____ __C1p16ridNabit __ _ _ I \I ,/ - O � Natural Dam composed of Existing - _ N 1 4 P I � U Eim,rice I prescribed e wood debris set of — Ditch -- - - \ I' 1 -- -t z W __ 410 -- 410 a ( \ o 1 - g Y r�escnbed elevation by Biologist -- Bottom ��`- - ----- 1 1D a \ i \ \ 1 -�-------------- - • _� --1---- II �3 o N Design Surface11Y9)-- ' s \ I / \ g ---I-::-o--------------- -------- -- _- -'- � noz -= -' � J ____ \ \Wetland creation co Pbini 0 _. _____ _ > 099 l \ "' vsee o l � 1 \ \ e}I \ \ \ anEdKI dAto rote } _ ---s___________ __ ___ _____ _ .' f \\ ° T Q 1 1 l I J^ \ \ axis}ing hea -- �- ------------------------------------ - t.::: 1' i �' 406. " ____ """__,_ I I L/ �I \ `1 \ IarnfHabBat••••• ... -: ___ ¢ 2 7— AL 390 _ 390 �''�i�- aeali a Z ` _ _ _ __.a y I� , /� O o II� v��=L-=_�-=_Lr_—>___- ----- »�3es �le� / e o P o - _pP-18 0+00 1+00 2+00 3+00 4+00 5+00 5+50 ( l /_ - - _- ___ __ _ __ A "6 -_ n m a _ o LU DO-SECTION SCALE.Hoa 1-40 l�o3gt 9 ^D.^ `6!-!/ - / �zbp�_ _ _ ==_ = - I• STAG 2+07 4' - �-�� -__ _ (4'1)Vert 1-10' v v�� AM r'399' p00" p9 0 ,,Liza g a136 EE,�SYA 0+7 22�'i .yIL /> u,\ P- es( j y t N t ral Dam composed of large woody T ._ _ ' �' {` U \ \�/ \ �} �i3�^»�ipo4i A°E rdebnssetatprescnbetl ele-1-1yBel st\ .\]II v r-�--1 ✓o»�' 420 420 _ � \a \ r/ ' I ' A N � "� _� +virs �� �> zsst \ a z � � az10 "A V � o s� h' O x Q-Osn�72� xnez '� ' Block Exisfin9 Ditch,Extend PeninsulN89' Q' "W Upland Habitat Design l J�I Y7s7a z - ��z)�, ers ,/zd9earthwrkfofpofopposing ditch bank ` ---' iNatural am composed of large woodySurfaceV \ ' J - I \ '� I s��-n'ss�-\\zdb ` WRefuge Peninsula Eirnng,r�ace//yP/ \ n ' z410 ----- debris s at rescribed elevafion�Biologlst 410 -1 �'� ,a1z6, - »nfs xe ( �zz MzV2 I > _____ ------- - -------------- \�' c l/ �T 1` /ix5 a/ ) .. f m 3 --> -- ---- -- - ------ \ \`✓ ^a 1 ! �1�- , -- Acti�l a�z - \ }-, ` \I/' ,l m Y__ 1�,��(`(�-v/_' / /•_^�-.1-' v 11 boo aoo J � \V I�VA�vv ------- -------- <Zuni ��,\I /� � ���v 1 C � l (� l({1 1� \�_f /(✓A���-x �_ .� 1 \ � � Al w o /` �a� c_ ! / �- R- I �f/ --v/�- /✓/ i ^� i _l\ ) ° (�� v`/ t� A�� �/ -✓/v / 1�� e tom( c 390 390 A- �- <i �, I J _ 04 ✓ A ag e� eg eg 9 \` /'' (`�✓r \I\/ Il ll % \t \Il(, .`�\(� JJf �� Il ✓/\� (_._,��,/ \' ��\ f` �� \\�`/^f _ ���I�,v.. 0 0+00 1+00 2+00 3+00 4+00 5+00 5+50 (o� \`\� p A A-i V a V A I l \/✓ ( 1 -I /)r 1 J ��Il /n /\ -� hI I ��y —4 A /�� ��\v 1 AI SCALEHrz I-Oc EE-SECTION (4:p Vert r"vlo'' \A\I,AL1 l \ (\/I /j/�-�\I�I\l_�� .✓\\ ,/%ii f rl`ir\"~Jc ��f 1\/L / �^- \I__ "II vv ti S SHEET i \ C of 24x36 WETLAND CREATION GRADING 0 30' 60' AND SECTIONS AND 1"=30' - Appendix C — Qualifications Project Manager: Kramer Canup Report Preparation By: Monique Metza Map Preparation By: Gerardo Solorzano Zaragoza Document Quality Assurance By: Morgan Kirsanov Kramer Canup is a Senior Project Manager and Environmental Scientist with 10 years of professional experience. Kramer has a professional background in project management, ecological restoration, vegetation monitoring, invasive plant management, monitoring protocol development, grant writing, tropical ecology,wildlife monitoring and environmental education. He currently manages residential and commercial projects, performs wetland and ordinary high-water delineations and shoreline assessments; conducts environmental code analysis and prepares environmental assessment and mitigation reports, biological evaluations, and permit applications to support clients through the planning and permitting processes. His noteworthy experiences include supporting clients with navigating environmental regulations related to land use and development, managing wetland and riparian restoration projects, leading wetland and ordinary high water delineations throughout the Puget Sound region, and instructing study abroad courses in the Peruvian Amazon for the University of Washington. Education:Bachelor of Arts in Environmental Studies with a minor in Ecological Restoration from the University of Washington. Professional Trainings:Basic Wetland Delineator Training with the Wetland Training Institute 40-hour USACE wetland delineation training. Kramer has been formally trained through the Washington State Department of Ecology,Coastal Training Program,How to Determine the Ordinary High Water Mark,Using the Washington State Wetland Rating System(2014),and Using the Credit-Debit Method for Estimating Mitigation Needs. Monique Metza is a Staff Scientist III/ Junior Project Manager with 8 years of professional experience. Monique has a background in Wildlife Biology, Ecology and Conservation. She currently supports Soundview in wetland, stream, and shoreline delineations and fish and wildlife habitat assessments; conducts environmental code analysis; and prepares environmental assessment and mitigation reports, biological evaluations, and permit applications to support clients through the regulatory and planning process for various land use projects. Her noteworthy experiences include analyzing large datasets to understand bat activity and the potential presence of disease in bat populations during winter seasons, collecting environmental samples to determine presence of the White-nose syndrome causing fungus in outdoor recreation areas, translocation of bighorn sheep to decrease prevalence of pneumonia in domestic and wild populations, and managing public lands to ensure Peregrine falcon nest success over multiple years. Education: Master of Arts and Science in Biology from the college of William & Mary, Virginia. Bachelor of Science in Organismal Biology from Montana State University, Bozeman. Professional Licenses/Certifications: Desktop GIS (Pace University).Wildlife Chemical Restraint and Immobilization Certification (Center for Wildlife Studies). Animal Health Certification (Baldy View Regional Occupational Program). Animal Science Certification (Baldy View Regional Occupational Program). Professional Trainings: Wildland Firefighter Type 2 (USFS). Qualified Author and Scientist Lists: 2022 Summer Acoustic Bat Monitoring Field Report, Devils Tower National Monument. National Park Service. 2021 Summer Acoustic Bat Monitoring Field Report, Devils Tower National Monument. National Park Service. Publications: Metza, M.L., Swaddle, J.P., (2024). Bats and Rockreation: is 2419.0002—Lindsay Annexation Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026 recreation a vector of Pseudogymnoascus destructans at Devils Tower National Monument? [Unpublished master's thesis] Gerardo Solorzano Zaragoza has been a licensed Architect in Mexico since 2016, with 7 years of professional experience. Gerardo has a background in Architectural design for residential structural and industrial design. Currently he works with landscape, mitigation, tree assessment, and grading plans. Experience includes 7 years of AutoCAD and more than 11 years as a student using Architectural CAD programs for all types of processes. Education:Bachelor of Architecture from Mexico Colima State University & specialty of Design and History of Art(2016).Professional training:6 months Architectural design company(Panto Arquitectura Guadalajara Mexico, 2015) 6 months Architectural design company (Dcasa, Colima Mexico, 2015), Using professional blueprints, engineer calculations, CAD programs&files, structural&installations. Morgan Kirsanov is an Environmental Scientist III with 6 years of professional experience. She has a background in marine and freshwater ecology, wildlife and natural resource assessments, and monitoring wetland and riparian habitat restoration sites in the Pacific Northwest. She currently assists with performing wetland, stream,and shoreline delineations and fish and wildlife habitat assessments, conducting environmental code analysis, and preparing and/or providing final quality assurance/control for various types of scientific reports and permits for agency submittal. Her noteworthy experiences include analyzing datasets for wetland hydrology monitoring, collecting eDNA samples from streams for analysis, providing document quality assurance on critical area reports,mitigation plans,and permitting documents prior to submittal,and assisting with Endangered Species Act documentation for federal permit submittals. Education: Bachelor of Science degree in Biology with Marine Emphasis from Western Washington University, Bellingham. Professional Training: 40-hour Wetland Delineation Training (Western Mountains,Valleys,and Coast and Arid West Regional Supplements),Using the 2014 Wetland Rating System,How to Determine the Ordinary High Water Mark,and Using the 2021 Interagency Wetland Mitigation Guidance.Qualified Author and Scientists Lists: Pierce County Wetland Specialist. 2419.0002—Lindsay Annexation Soundview Consultants LLC Final Mitigation Plan Revised January 16,2026