Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
REVIEWED PLN_BLD2021-0929+wetland Report+7.2.2021_2.57.58_PM+2282216
RECEIVED Jul 26 2021 CITY OF EDMONDS DEVELOPMENT SERVICES DEPARTMENT BLD2021-0929 ENVIRONMENTAL CONSULTING CRITICAL AREA STUDY, HABITAT ASSESSMENT, AND BUFFER MITIGATION PLAN FOR 8229 TALBOTRoAD EDMONDS, WA Wetland Resources, Inc. Project #20258 Prepared By Wetland Resources, Inc. 9505 19th Avenue SE, Suite 106 Everett, WA 98208 (425) 337-3174 Prepared For Christi and Todd Flynn 8229 Talbot Rd. Edmonds, WA 98026 June 25, 2021 TABLE OF CONTENTS 1.0 INTRODUCTION........................................................................................................................ 1 2.0 SITE DESCRIPTION.................................................................................................................... 1 3.0 REVIEW OF PUBLICLY AVAILABLE DATA.................................................................................. 2 4.0 WETLAND AND STREAM DETERMINATION.............................................................................. 4 4.1 DETERMINATION METHODOLOGY...................................................................................................4 4.1.1 Hydrophytic Vegetation Criteria.................................................................................................4 4.1.2 Soils Criteria.................................................................................................................................4 4.1.3 Hydrology Criteria.......................................................................................................................5 4.2 WETLAND AND STREAM BOUNDARY DETERMINATION FINDINGS..................................................5 4.2.1 Perrinville Creek...........................................................................................................................5 4.2.2 Puget Sound.................................................................................................................................7 5.0 PROJECT DESCRIPTION............................................................................................................. 8 5.1 COMPLIANCE WITH ECDC 23.90.040................................................................................................8 5.1.1 ECDC 23.90.040(5) Development Proposals within the Footprint of Existing Development ..... 8 5.1.2 ECDC 23.90.040(D)(4) Additions to Structures Existing within Stream Buffers .........................9 5.1.3 Trails..........................................................................................................................................11 5.2 SHORELINE MASTER PROGRAM COMPLIANCE...............................................................................1 1 6.0 HABITAT ASSESSMENT............................................................................................................ 13 6.1 DESCRIPTION OF HABITATS AND SPECIES.......................................................................................13 6.2 POTENTIAL PROJECT IMPACTS........................................................................................................14 7.0 PROPOSED IMPACTS AND BUFFER MITIGATION PLAN........................................................... 15 8.0 SIGNS..................................................................................................................................... 16 9.0 PROJECT MONITORING PROGRAM......................................................................................... 17 9.1 GOALS AND OBJECTIVES..................................................................................................................17 9.2 MONITORING PROGRAM..................................................................................................................17 9.3 PROJECT SUCCESS & COMPLIANCE.................................................................................................18 9.4 MAINTENANCE..................................................................................................................................18 9.5 CONTINGENCY PLAN........................................................................................................................19 9.6 PLANTING NOTES..............................................................................................................................19 10.0 COST ESTIMATE AND FINANCIAL GUARANTEE.................................................................... 22 11.0 USE OF THIS REPORT........................................................................................................... 23 12.0 REFERENCES......................................................................................................................... 24 LIST OF FIGURES FIGURE 1 -AERIAL VIEW OF SUBJECT PROPERTY. (NOT TO SCALE) ................................................ 2 FIGURE 2 -ON-SITE PORTION OF PERRINVILLE CREEK, FACING EAST ........................................... 6 FIGURE 3-PERRINVILLE CREEK FLOWS TO THE WEST FROM THE SITE VIA A FLOW CONTROL DEVICE WITH TWO CATCH BASINS.................................................................................................. 7 ll FIGURE 4 -EXISTING FISH & WILDLIFE HABITAT CONSERVATION AREA SIGN, LOCATED EAST OF THEACCESS DRIVEWAY................................................................................................................. 16 LIST OF APPENDICES APPENDIX A: EDMONDS SHORELINE ENVIRONMENTS MAP APPENDIX B: EXISTING CONDITIONS MAP (SHEET 1) APPENDIX C: CRITICAL AREA STUDY AND BUFFER MITIGATION PLAN MAP (SHEET 2X) 111 1.0 INTRODUCTION Wetland Resources, Inc. (WRI) conducted a site investigation on November 17, 2020 to identify and evaluate jurisdictional wetlands and fish and wildlife habitat conservation areas on and in the vicinity of the property located at 8229 Talbot Road in Edmonds, Washington. The subject property (parcel number 00594400001100) is 1.27 acres in size. It is situated in Section 7, Township 27N, Range 4E, W.M., within the Puget Sound drainage sub -basin of the Cedar- Sammamish Watershed, Water Resources Inventory Area (WRIA) 8. The purpose of this report is to document conditions on and near the site in regard to wetlands and fish and wildlife habitat conservation areas, assess potential impacts associated with the proposed development, and provide a buffer mitigation plan. 2. U SITE DESCRIPTION The subject property is developed with a single-family residence. The property is bisected by the BNSF railway corridor. Directly north of the railway is Puget Sound. Puget Sound is regulated as a Shoreline of the State. Topography of the portion of the site south of the railroad slopes generally to the west. Soils underlying the portion of the property south of the railroad corridor are mapped as Alderwood-Urban land complex, 2 to 8 percent slopes. Surrounding land use is single-family residential. Vegetation on the property is mainly comprised of maintained lawn and landscaping. Natural vegetation occurs along portions of the stream. These areas are composed primarily of native species dominated by red alder (Alnus rubra), big -leaf maple (Acer macrophyllum), Douglas fir (Pseudotsuga menziesiz), salmonberry (Rubus spectabilis), trailing blackberry (Rubus ursinus), and swordfern (Polystichum munitum). A significant amount of invasive Himalayan blackberry (Rubus armeniacus) has recently been removed from portions of the stream buffer. Perrinville Creek flows through the southern portion of the property, and the access driveway spans the stream. Perrinville Creek is a Type F anadromous fish bearing stream. The reach of Perrinville Creek on site appears to have anadromous fish access. Pursuant to Edmonds Community Development Code (ECDC 23.90.040(D), Type F anadromous fish bearing streams receive 100-foot protective buffers adjacent to reaches with anadromous fish access. 8229 Talbot Road 1 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 Figure I -Aerial view of subject property. (Not to scale) 3.0 REVIEW OF PUBLICLY AVAILABLE DATA Prior to conducting the site investigation, public resource information was reviewed to gather background information on the subject property and the surrounding area in regard to wetlands, streams, and other critical areas. These sources included the following: USDA/MRCS Web Soil Survey Soils on the site are mapped as Alderwood-Urban land complex, 2 to 8 percent slopes. This soil map unit is described as moderately well drained. This unit contains inclusions of Terric Medisaprists (5 percent), Norma (5 percent), and McKenna (5 percent), which are hydric soils typically found in depressions. City of Edmonds GIS Interactive Map The City of Edmonds GIS interactive online map shows Perrinville Creek flowing through the southern portion of the property. A large wetland is also mapped to the west of the property. The 8229 Talbot Road 2 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 portion of the property north of the railway corridor is mapped as floodplain Zone VE and as an area containing priority habitat or species. Snohomish County PDS Map Portal PDS Map Portal shows Perrinville Creek (Type F stream) flowing through the southern portion of the property. The portion of the property north of the railway corridor is mapped as a Shoreline of Statewide significance, an estuarine and marine wetland, and a Zone VE flood hazard zone. A remote sensing -based wetland is shown approximately 300 feet west of the site. USFWS National Wetlands Inventory (NWI) NWI depicts Perrinville Creek off site just south of Talbot Road flowing to the west and then turning north to Puget Sound approximately 185 feet west of the site. The portion of the site north of the railway corridor is mapped within an Estuarine, Intertidal, Aquatic Bed (E2AB)/ Unconsolidated Shore, Regularly Flooded (USN) wetland system. Approximately 385 feet from the shoreline, NWI maps the subtidal portion of Puget Sound as an Estuarine, Subtidal, Unconsolidated Bottom, Subtidal (E I UBL) wetland. WA DNR Wetlands of High Conservation Value Interactive Map This resource does not depict any features on or near the subject property. WA DNR Forest Practices Application Mapping Tool (FPAMT) Perrinville Creek (Type F) is mapped in the same location as shown by NWI. A Type N waterbody that is labelled as a reservoir/impoundment is shown along the western property boundary. Puget Sound is mapped as a Type S waterbody. WDFW SalmonScape Interactive Mapping System SalmonScape shows documented presence of Coho (Oncorhynchus kisutch) in Perrinville Creek north of Talbot Road and presence based on gradient north of Talbot Road. Resident Coastal Cutthroat (Oncorhynchus clarki) is documented throughout Perrinville Creek. StreamA'et Mapper StreamNet maps migration of Coho the portion of Perrinville Creek south of Talbot Road and migration of Coastal Cutthroat Trout throughout Perrinville Creek. WDFW Washington State Fish Passage The WDFW fish passage online mapping tool depicts a culvert that functions as a fish passage barrier just upstream of the subject site. WDFW Priority Habitat and Species (PHS) Interactive Map PHS depicts the estuarine and marine wetland as mapped by NWI in the nearshore portion of Puget Sound. Perrinville Creek is shown in the same location as mapped by NWI. Coho is mapped in the portion of Perrinville Creek north of Talbot Road, and Resident Coastal Cutthroat is mapped in all portions of Perrinville Creek in the vicinity of the site. Dungeness crab 8229 Talbot Road 3 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 (Cancer magister) is mapped in the subtidal portion of Puget Sound to the north of the site. A biodiversity area/corridor is mapped along Perrinville Creek approximately 260 feet southeast of the site. 4.0 WETLAND AND STREAM DETERMINATION 4.1 DETERMINATION METHODOLOGY Ordinary High Water Mark (OHWM) boundaries of lakes, streams, and marine waters are determined using the methodology in Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State (Anderson et al 2016). Designation of waterbodies is consistent with the water typing system established in the Washington Administrative Code (WAC) 222-16-030 and Edmonds Municipal Code (ECDC 23.90.010). Wetland boundaries are determined using the routine approach described in the Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987) and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0) (U.S. Army Corps of Engineers 2010). Under the routine methodology, the process for making a wetland determination is based on three steps: 1.) Examination of the site for hydrophytic vegetation (species present and percent cover); 2.) Examination of the site for hydric soils; 3.) Determining the presence of wetland hydrology 4.1.1 Hydrophytic Vegetation Criteria The Corps Manual and 2010 Regional Supplement define hydrophytic vegetation as "the assemblage of macrophytes that occurs in areas where inundation or soil saturation is either permanent or of sufficient frequency and duration to influence plant occurrence." Field indicators are used to determine whether the hydrophytic vegetation criteria have been met. Examples of these indicators include, but are not limited to, the rapid test for hydrophytic vegetation, a dominance test result of greater than 50%, and/or a prevalence index score less than or equal to 3.0. 4.1.2 Soils Criteria The 2010 Regional Supplement (per the National Technical Committee for Hydric Soils) defines hydric soils as soils "that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part." Field indicators are used to determine whether a given soil meets the definition for hydric soils. Indicators are numerous and include, but are not limited to, presence of a histosol or histic epipedon, a sandy gleyed matrix, depleted matrix, and redoximorphic depressions. 8229 Talbot Road 4 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 4.1.3 Hydrology Criteria The 2010 Regional Supplement defines wetland hydrology as "areas that are inundated (flooded or ponded) or the water table is less than or equal to 12 inches below the soil surface for 14 or more consecutive days during the growing season at a minimum frequency of 5 years in 10." During the early growing season, wetland hydrology determinations are made based on physical observation of surface water, a high water table, or saturation in the upper 12 inches. Outside of the early growing season, wetland hydrology determinations are made based on physical evidence of recent inundation or saturation (i.e. water marks, surface soil cracks, water -stained leaves). 4.2 WETLAND AND STREAM BOUNDARY DETERMINATION 'FINDINGS One stream (Perrinville Creek) was identified on the subject property. No wetlands were identified. Puget Sound is located in the northern portion of the property. 4.2.1 Perrinville Creek Cowardin Classification: Riverine, Upper Perennial, Unconsolidated Bottom, Cobble/gravel City of Edmonds Classification: Type F, anadromous fish -bearing City of Edmonds Buffer: 100 Perrinville Creek flows across the southern portion of the property. The on -site portion of the stream ranges from approximately 6 to 14 feet in width and has a cobble/gravel substrate. No pool and drop features are present. A very small amount of woody debris is present in the stream. The stream flows onto the site from the east and continues in a north-westerly direction across the property. At the eastern property boundary, it passes through a flow control structure with two overflow catch basins. Surface water continues to the northwest, flows through a culvert under the BNSF railway, and outlets to Puget Sound approximately 360 feet downstream of the subject site. Water entering the overflow catch basins is piped to the northwest along the eastern property boundary and outflows to Puget Sound in the northern portion of the site, north of the railway. Perrinville Creek is a Type F stream. Anadromous fish species are documented within the on -site portion of the stream. Pursuant to ECDC 23.90.040(D), Type F anadromous fish - bearing streams receive 100-foot protective buffers. 8229 Talbot Road 5 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 Figure 2 -On-site portion of Perrinville Creek, facing east. 8229 Talbot Road 6 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 Figure 3-Perrinville Creek flows to the west from the site via a flow control device with two catch basins. 4.2.2 Puget Sound Puget Sound is regulated as a as a fish and wildlife habitat conservation area under ECDC 23.90.010(A)(8). It is also regulated as a Shoreline of the State under the Edmonds Shoreline Master Program (SMP). Compliance with the Edmonds SMP is addressed in Section 5.2 of this report. 4.2.3 Non -Wetland Areas Vegetation on the site consists primarily of maintained lawn and landscaping. North of the house a sloped area is dominated by English ivy (Hedera helix; FACU). A portion of the stream buffer consists of trees and shrubs and is dominated by native species including big leaf maple (Ater macrophyllum; FACU), red alder (Alnus rubra; FAC), thimbleberry (Rubus parvifolius; FACU), salmonberry (Rubus spectabilis; FAC), trailing blackberry (Rubus ursmus; FACU), and swordfern (Polystichum munitum; FACU). Soils on the site are typically very dark brown (10YR 2/2) sandy loam to loamy sand in the upper 18 inches. At the time of the November 2020 site investigation soils were moist. No saturation or ponding was observed. 8229 Talbot Road 7 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 5.0 PROJECT DESCRIPTION The applicant proposes to construct an addition to the single-family residence, a new paved parking pad adjacent to the existing driveway, and to reconfigure steps, walkways, and landscaping around the home within areas of existing maintained lawn and landscaping. The work for this project will take place within the buffer of Perrinville Creek, and a portion of the project is located within 200 feet of the ordinary high water mark of Puget Sound (in shoreline jurisdiction). Project impacts within the stream buffer include: • Addition to existing SFR (589.7 square feet) within the footprint of existing development in the stream buffer and also within the shoreline zone) • New paved parking pad (400 square feet) within the stream buffer Mitigation for the proposed development will be provided as required in the form of buffer enhancement. Overall, the project will result in a net decrease in the amount of impervious surface within the stream buffer and shoreline zone and a significant increase in native vegetation. The project will result in an overall improvement in buffer and shoreline function on the site as compared with existing conditions. Compliance with Edmonds Community Development Code and Edmonds Shoreline Master Program is demonstrated in the following sections. 5.1 COMPLUNCE WITH ECDC 23.90.040 5.1.1 ECDC 23.90.040(5) Development Proposals within the Footprint of Existing Development The proposed addition (589.7 square feet) will be constructed within the footprint of existing development within the stream buffer. Pursuant to ECDC 23.90.040(5), new development shall be allowed within the footprint of existing development occurring within a stream buffer provided that the following conditions are met (code cited in italics with responses beneath in normal text): a. The footprint of existing development was legally established, and is consistent with the definition provided in ECDC 23.40.005; "Footprint of existing development" is defined under ECDC as `the area of a site that contains legally established.- buildings; roads, driveways, parking lots, storage areas, walkways or other areas paved with concrete, asphalt or compacted gravel; outdoor swimming pools; patios'. The proposed addition will be constructed in the location of an existing impervious driveway/parking area. b. The proposed development within the footprint of existing development is sited as far away from the stream edge as is feasible; The site plan is designed to work with the existing topography of the site and to locate development within the footprint of existing development. The house is situated between Perrinville Creek and Puget Sound. Given the existing conditions on the site including critical 8229 Talbot Road 8 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 areas and topography, the proposed plan is the best option to achieve the project goal while minimizing critical area impacts. The addition is located as far from the stream edge as is feasible and is no closer than previously existing development. c. As part of the development proposal, opportunities to reduce the footprint of existing development are implemented where such reduction would increase the buffer width adjacent to the stream and not represent an undue burden given the scale of the proposed development; Existing concrete walkways around the perimeter of the house will be removed. New pervious pathways will improve pedestrian movement around the property. Two new, small concrete pads will be constructed adjacent to the house. The proposed landscape plan will result in a net decrease of approximately 400 square feet of impervious surface within the stream buffer. d. The proposed development includes enhancement to the adjacent remaining stream buffer in order to improve functions degraded by previous development; To compensate for the proposed development within the footprint of existing development, the applicant proposes to enhance 590 square feet of the on -site stream buffer (a 1:1 ratio as required under ECDC 23.90.040(5)(e) below). The proposed buffer enhancement involves installation of a variety of native plants in areas that previously consisted of Himalayan blackberry or maintained lawn. The proposed addition will not adversely impact stream buffer functions as it will be located over existing impervious surface. The applicant proposes additional native plantings within the stream buffer beyond that required as mitigation for this project. Overall, the project will provide a significant lift to buffer functions as compared with existing conditions. e. Enhancement is provided as buffer enhancement for an equivalent area of the footprint of the newly proposed development within the footprint of existing development occurring in stream buffer, or through an alternative approach approved by the director that restores degraded functions of the wetland and remaining buffer; and To compensate for the proposed addition (589.7 square feet) within the footprint of existing development, the applicant proposes to provide 590 square feet of buffer enhancement. f. Impacts from temporary disturbances within the stream buffer shall be addressed through use of best management practices and buffer enhancement plantings during and following construction of the allowed alteration. Temporary erosion and sediment control measures will be in place during construction to ensure that no sediment from the construction activities reaches the stream. All soils that are disturbed will be stabilized immediately following construction via buffer enhancement plantings, grass seeding, or placement of wood chip mulch, per the approved landscape plan and buffer mitigation plan. 5.1.2 ECDC 23.90.040 (D) (4) Additions to Structures Existing within Stream Buffers The applicant proposes to construct a new parking pad (400 square feet) adjacent to the existing driveway that will be located within the stream buffer. This is allowed under ECDC 23.90.040(D)(4), which is cited below in italics with responses beneath in normal text. 8229 Talbot Road 9 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 ECDC 23.9 0.0 4 0 (D) (4) Additions to legally constructed structures existing within stream buffers that increase the footprint of development or impervious surfacing shall be permitted consistent with the development standards of this chapter (ECDC 23.90.030 and this section); provided, that a buffer enhancement plan is provided to mitigate for impacts consistent with this title; and provided, that all impacts from temporary disturbances within the critical area buffer shall be addressed through use of best management plans and buffer enhancement plantings during and following construction of the allowed alteration. Provisions for standard stream buffers, stream buffer averaging with enhancement, and buffer reductions through enhancement require applicants to locate such additions in accordance with the following sequencing: i. Outside of the standard stream buffer; It is not feasible to locate an additional parking area outside of the stream buffer. The driveway on the property is located entirely within the stream buffer. The only area in the southern portion of the site that is outside the stream buffer is approximately 220 square feet adjacent to Talbot Road and the existing stormwater easement (in the southwestern corner of the property). This area is disconnected from the existing access drive, is insufficient in size. Therefore, it is not feasible to located the parking pad outside of the stream buffer. ii. Outside of a stream buffer averaged (with enhancement) per subsection (D) (3) of this section; Because of the extent and location of the stream buffer on the site, it is not feasible to utilize buffer averaging to achieve a viable location for the parking pad. iii. Outside of a stream buffer reduced (with enhancement) per subsection (D) (2) of this section; Reducing the 100-foot stream buffer by 25 percent (to 75 feet) does not does not allow a wide enough access for a parking pad. Therefore, this option is not feasible. iv. Outside of the inner 25 percent of the standard stream buffer width with no more than 300 square feet of structure addition footprint within the inner 50 percent of the standard stream buffer width; provided, that enhancement is provided at a minimum three -to -one (3:1) ratio (enhancement -to -impact); or The proposed parking pad is located outside of the inner 25 percent of the standard stream buffer. Only 13.5 square feet of the proposed parking pad is located within the inner 50 percent of the standard stream buffer width. The parking pad is 400 square feet in size. To compensate for this impact, the applicant proposes to provide 1,200 square feet of buffer enhancement (a 3:1 ratio. v. Outside of the inner 25 percent of the standard stream buffer width with no more than 500 square feet of new footprint within the inner 50 percent of the standard stream buffer width; provided, that enhancement is provided at a minimum five -to -one (5:1) ratio (enhancement -to -impact), and that storm water low impact development (LID) techniques or other measures that enhance existing buffer condition are included as part of the stream buffer enhancement plan. Not applicable. 8229 Talbot Road 10 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 5.1.3 Trails The applicant proposes to create pedestrian -only pervious (mulch) trails within the portion of the stream buffer to be planted with native vegetation. This may be allowed pursuant to ECDC 23.90.040(D)(7), which reads: "After reviewing the proposed development and technical reports, the director may determine that a pedestrian -only trail may be allowed in a stream buffer; provided, pervious materials are used, all appropriate provision is make to protect water quality, and all applicable permit requirements have been met. No motorized vehicles shall be allowed within a stream or its buffer except as required for necessary maintenance or security. Vegetative edges, structural barriers, signs or other measures must be provided wherever necessary to protect streams by limiting vehicular access to designate public use or interpretive areas." Use of the trail will be limited to foot traffic only. No motorized vehicles shall utilize the trails. Extensive native plantings will be installed between the trails and the stream, which will maintain soil stability and protect stream water quality. 5.2 SHORELINE MASTER PROGRAM COMPLIANCE A portion of the proposed development is located within 200 feet of the ordinary high water mark (OHWM) of Puget Sound. Pursuant to ECDC 24.80.010(B)(6), the proposed project is exempt from obtaining a shoreline substantial development permit. However, the proposal must be in compliance with the Edmonds Shoreline Master Program (SMP — ECDC Title 24). The portion of the site within which the existing single-family residence and proposed development occurs is located within the Shoreline Residential I shoreline environment. The railway corridor is designated within the Urban Railroad shoreline environment, and the portion of the property to the north of the railroad (Puget Sound) is designated within the Aquatic I shoreline environment. A map of the on -site shoreline environments is included in Appendix A of this report. No development activity is proposed within the Aquatic I or Urban Railroad shoreline environments. The project does not require public access provisions to be implemented, as detached single- family residences are exempt from these requirements under ECDC 24.40.040(B)(4)(a). Due to the BNSF railway corridor, which bisects the site, the portion of the property south of the railway that is within 200 feet of the OHWM of Puget Sound is functionally disconnected from the shoreline. As stated in ECDC 24.40.050(A)(3), important functions of shoreline vegetation are outlined below (code cited in italics with discussion beneath in normal text): a. Providing shade necessary to maintain water temperatures required by salmonids, forage fish, and other aquatic biota. No vegetation south of the railway corridor is in close enough proximity to provide shade to the nearshore portions of Puget Sound. 8229 Talbot Road 11 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 b. Providing organic inputs critical for aquatic life. Because the raised railway bisects the shoreline environment on the property, organic inputs do not enter the marine environment from the vegetated portion of the site (south of the railroad), with the exception of any small organic matter that is blown by wind across the railway corridor. c. Providing food in the form of various insects and other benthic macroinvertebrates. The portion of the site south of the railway corridor does not provide a significant source of insects to Puget Sound and does not provide habitat for benthic macroinvertebrates that could be used as a food source by organisms in Puget Sound. d. Stabilizing banks, minimizing erosion, and reducing the occurrence of landslides. The raised railway functions as an armored bulkhead. The portion of the site south of the railway corridor includes a moderate slope with a low, flat area adjacent to the raised railroad tracks. The sloped area will remain vegetated and the proposed development is not expected to result in any change to slope stability. e. Reducing fine sediment input into the aquatic environment through stormwater best management practices. Most of the sediment that is transported to Puget Sound in this area comes from upstream of the property via Perrinville Creek. The proposed project will result in a net decrease in impervious surfaces on the property within the shoreline environment, which will reduce stormwater runoff. The project also includes establishing a native plant community along portions of Perrinville Creek where this is lacking. The proposed native plantings within the stream buffer will stabilize soils, filter sediments and pollutants from surface water, and reduce hydrologic inputs. The project has been designed in compliance with stormwater management requirements. f. Filtering and vegetative uptake of nutrients and pollutants from ground water and surface runoff. The proposed buffer mitigation plan ensures that water quality function of the buffer will be improved as compared with existing conditions and will benefit the waters of Puget Sound by filtering and vegetative uptake of nutrients and pollutants from ground water and surface runoff before it enters the stream (and subsequently Puget Sound). g. Providing a source of large woody debris into the aquatic system. The railway corridor interrupts the movement of large, woody debris from the vegetated portion of the site to Puget Sound. h. Regulation of microclimate in the stream -riparian and intertidal corridors. The railway corridor separates the vegetated portion of the site from the shoreline such that there is no opportunity for on -site vegetation to affect the microclimate of the intertidal area. i. Providing habitat for wildlife, including connectivity for travel and migration corridors. The railway functions as a barrier to wildlife movement to and from the shoreline of Puget Sound. An existing privacy fence also precludes wildlife movement between the developed portion of the site and Puget Sound for most wildlife species. 8229 Talbot Road 12 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 As the proposed development occurs landward of the railway corridor, which bisects the property and interrupts the functions typically provided by vegetation within the shoreline zone, no impacts to shoreline functions will occur as a result of this project. Pursuant to ECDC 24.40.050(B)(1)(a), alteration of native shoreline vegetation shall only be allowed under certain circumstances, including landscaping or maintenance associated with an existing legal use. The portion of the property that is located within the shoreline zone consists of the existing single-family home and associated maintained landscaping. No alteration of native shoreline vegetation is proposed. Modification of vegetation within the shoreline zone will be limited to existing maintained areas and will not result in a loss of ecological functions. All disturbed areas will be revegetated or covered with wood chip mulch immediately following construction per the approved landscape plan and buffer mitigation plan. This project has been designed to comply with the development standards set forth in ECDC 24.40.090. There will be no increase in coverage and the proposed addition will be no greater than 25 feet in height. 6.0 HABITAT ASSESSMENT Per ECDC 23.90.020(C), critical areas reports for fish and wildlife habitat conservation areas shall contain a Habitat Assessment. Habitat assessments shall include a detailed description of vegetation on and adjacent to the project area and associated buffer, identification of any species of local importance, priority species, or endangered, threatened, sensitive, or candidate species that have a primary association with habitat on or adjacent to the project area, assessment of potential project impacts to the use of the site by the species, and a discussion of any federal, state, or local special management recommendations that have been developed for species or habitats located on or adjacent to the project area. 6.1 DESCRIPTION OF HABITATS AND SPECIES Vegetation on and adjacent to the project area includes a mix of naturally vegetated areas and maintained lawn and landscaping. Portions of the existing on -site stream buffer, particularly south of the stream, consist of naturally vegetated forested habitat dominated by native species. The on -site portions of the buffer north of the stream were dominated by invasive species (primarily Himalayan blackberry — Rubus armemacus). The property owner recently removed blackberry from the stream buffer and proposes to install native species in these portions of the buffer. The on -site portion of Perrinville Creek ranges from approximately 6 to 14 feet in width and has a cobble/gravel substrate. No pool and drop features occur within the on -site portion of the stream. A small amount of woody debris is present within the stream. Portions of the northern streambank are downcut. The existing access driveway spans the stream with a wooden bridge supported by rockery walls. Neighboring properties are also developed with single-family residential homes. Vegetation on the property to the east includes natural forested vegetation along Perrinville Creek. Vegetation 8229 Talbot Road 13 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 on the property to the west consists primarily of maintained lawn and landscaping. Nearby properties on southeast side of Talbot Road contain a similar mix of natural forested vegetation and maintained lawn and landscaping. Southeast of the project site, southeast of Talbot Road, there is a forested corridor through which Perrinville Creek flows. The PHS online mapper depicts a biodiversity area/corridor associated with Perrinville Creek approximately 260 feet from the subject property, which extends to the southeast and includes Southwest County Park. WDFW maps a fish break at the northern edge of Talbot Road where Perrinville Creek flows through a culvert under the road and outflows to a significant elevation drop. Publicly available resources including PHS, WDFW SalmonScape, and StreamNet document the presence of Resident Coastal Cutthroat and Coho salmon in Perrinville Creek. Anadromous fish distribution is limited to the portion of Perrinville Creek north of Talbot Road due to the culvert described above. PHS does not indicate any additional priority species within 200 feet of the project area. As mentioned above, Perrinville Creek supports Coho and Resident Coastal Cutthroat. Puget Sound, located north of the BNSF railway corridor, provides habitat for marine and anadromous species. Songbird activity was noted in the forested portion of the site during the November 2020 site investigation. Based on the habitat available, it is expected the following avian species may utilize the site and surrounding areas: American Crow (Corvus brachyrhynchos), American Robin (Turdus migratorius), House Finch (Carpodacus mexicanus), Black -capped Chickadee (Poecile atricapillus), Dark - eyed Junco (junco hyemalis), Spotted Towhee (Pipilo maculatus), and Steller's Jay (Cyanocitta stellen). Mammalian species expected to utilize the area include Virginia Opossum (Didelphis virgimana), Eastern Gray Squirrel (Sciurus carolinensis), Raccoon (Procyon lotor), and Eastern Cottontail Rabbit (Sylvilagus floridanus). These lists are not meant to be all-inclusive and may omit species that currently utilize or could utilize the site. No species of local importance, priority species, or endangered, threatened, sensitive, or candidate species are known to occur or are expected to occur within 200 feet of the project area. Perrinville Creek and Puget Sound are priority habitats. 6.2 POTENTIAL PROJECT IMPACTS The proposed addition will be constructed within the footprint of existing development and will not have any adverse effects on wildlife habitat. Replacement of existing stairs and concrete walkways with new, reconfigured stairs and paver pathways will occur within existing maintained areas. The proposed parking pad will be located within an area that currently consists of maintained lawn, which does not provide wildlife habitat function. Landscape plan includes installing a diverse mix of native trees, shrubs, and herbaceous species within the stream buffer in areas that previously consisted of invasive species and maintained lawn. The proposed buffer enhancement exceeds the amount of mitigation required to compensate for project impacts and will result in a significant lift to wildlife habitat function on the site. No direct impacts to fish and 8229 Talbot Road 14 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan ,7une 25, 2021 wildlife habitat conservation areas are proposed and no work will take place within these areas. Temporary erosion and sediment control measures will be in place during construction to ensure that no sediment resulting from ground disturbance enters Perrinville Creek. 7.0 PROPOSED IMPACTS AND BUFFER MITIGATION PLAN Pursuant to ECDC 23.90.040(5)(e), buffer enhancement for an equivalent area of the footprint of the newly proposed development within the footprint of existing development occurring in stream buffer is required. The proposed addition is 589.7 square feet in size, which requires 589.7 square feet of buffer enhancement. Pursuant to ECDC 23.90.040(D)(4)(iv), buffer enhancement at a 3:1 ratio (1,200 square feet) is required for the proposed new parking pad (400 square feet). Therefore, the project requires a total of 1789.7 square feet of buffer enhancement. The applicant proposes to provide 2,020 square feet of buffer enhancement adjacent to Perrinville Creek, located between the creek and the proposed addition, which exceeds the amount required to mitigate for the proposed project elements. The following species and quantities shall be installed in the buffer enhancement area. Please refer to the landscape plan for the detailed planting plan. Buffer Enhancement Planting Plan (2,020 SF) Latin Name Common Name Size Spacing Quantity Achlys triphylla Vanilla leaf 1 gallon 2' 136 Amelanchier alnifolia Serviceberry 6' B&B 8' 4 Athyrium filix femina Lady fern 1 gallon 2' 136 Comus sericea Deschampsia cespitosa Holodiscus discolor Mahoma nervosa Philadelphia lewisii Polystichum munitum Rosa nutkana Rubus spectabilis Sambucus racemosa Symphoricarpos albus Red osier dogwood 5 gallon 3' 6 Tufted hairgrass 1 gallon 2' 96 Oceanspray 1 gallon 5' 1 Oregon grape 1 gallon 3' 6 Mock orange 5 gallon 5' 3 Swordfern 1 gallon 4.5' 7 Nootka rose 1 gallon 3' 11 Salmonberry 1 gallon 3' 14 Red elderberry 5 gallon 4' 3 Snowberry 1 gallon 3' 11 The buffer enhancement area was previously dominated by invasive Himalayan blackberry, which the homeowners have removed. The area also contains a large existing chestnut tree and several small red alder trees, which will be retained. The proposed buffer enhancement planting will stabilize soils along the stream and significantly improve wildlife habitat functions in the buffer. The diverse native plant community that is proposed will provide a significant increase in species and structural diversity as well as a range of native forage sources for wildlife. Water 8229 Talbot Road 15 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 quality improvement and hydrologic functions will be similar to that formerly provided by the blackberry dominated vegetation. Please note that the landscape plan for the project includes an additional 7,365 square feet of native buffer plantings in areas that were previously dominated by invasive species or maintained lawn. These areas are not included in the required mitigation and monitoring plan but will provide significant additional benefit to buffer functions on the site. 8.0 SIGNS Pursuant to ECDC 23.90.030(F)(2) the director may require permanent signs along the boundary of a fish and wildlife habitat conservation area or buffer. A sign identifying the stream as a fish and wildlife habitat conservation area exists on the property and shall be maintained. Figure 4 -Existing Fish & Wildlife Habitat Conservation Area sign, located east of the access driveway. 8229 Talbot Road 16 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 9.0 PROJECT MONITORING PROGRAM 9.1 GOALS AND OBJECTIVES The goal of the proposed buffer enhancement plan is to improve stream buffer function on the subject site. The objective is to establish native trees, shrubs, and herbaceous species within 2,020 square feet of the on -site stream buffer adjacent to Perrinville Creek. 9.2 MONITORING PROGRAM Pursuant to ECDC 23.90.020(D)(4)(c), the stream buffer enhancement shall be monitored for a period of three years. Requirements for monitoring project: 1. Initial compliance/as-built report 2. Annual site inspection (once per year in the fall) for three years 3. Annual reports (one report submitted in the fall of each monitored year) Purpose for Monitoring The purpose for monitoring this buffer enhancement project shall be to evaluate its success. Success will be determined if monitoring shows at the end of three years that the definitions of success stated below are met. The property owner shall grant access to the restoration and enhancement areas for inspection and maintenance to the contracted landscape and/or wetland specialist and the City during the period of the bond or until the project is evaluated as successful. Monitoring Schedule Monitoring shall be conducted annually for three years in accordance with the approved plan. The monitoring period will begin once the City receives written notification confirming the restoration and enhancement plan has been implemented and City staff inspects the site and issues approval of the installation. Vegetation Monitoring Installed plants will be inventoried and evaluated for survival and health. Photo points At least one permanent photo point will be established in the buffer enhancement area and the wetland restoration area. Photographs will be taken from these points to visually record condition of the enhancement area. Photos shall be taken annually between May 15 and September 30 (prior to leaf drop), unless otherwise specified. Monitoring Report Contents Monitoring reports shall be submitted in the fall of each year during the monitoring period. As applicable, monitoring reports must include descriptions / data for: 1. Site plan and vicinity map 8229 Talbot Road 17 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 2. Historic description of project, including date of installation, current year of monitoring, restatement of mitigation / restoration goals, and performance standards 3. Plant survival and vigor and explanation of monitoring methodology in the context of assessing performance standards 4. Assessment of nuisance / exotic biota and recommendations for management 5. Color photographs taken from permanent photo -points that shall be depicted on the monitoring report map 9.3 PROJECT SUCCESS & COMPLIANCE Criteria for Success Upon completion of the proposed restoration and enhancement measures, an inspection by a qualified wetland professional will be made to determine plan compliance. A compliance report will be supplied to the City within 30 days after the completion of planting. A qualified wetland professional will perform condition monitoring of the plantings annually in the fall. A written report describing the monitoring results will be submitted to the City after each site inspection of each monitored year. Definition of Success The buffer enhancement area shall meet the following performance standards: 1) End of Year 1: 100 percent survival of installed plants 2) Years 2-3: at least 90 percent survival of installed plants 3) End of Year 3: at least 60 percent areal cover of native species 9.4 MAINTENANCE The buffer enhancement area may require periodic maintenance to remove undesirable species and replace vegetation mortality. Maintenance shall occur in accordance with the approved plans. Maintenance may include but will not be limited to: removal of invasive or weedy species, irrigation, fertilization (if necessary), and replacement of plant mortality. Chemical control, only if approved by the City, shall be applied by a licensed applicator following all label instructions. Duration and Extent In order to achieve performance standards, the property owner shall be responsible for maintaining the restoration and enhancement areas for the duration of the monitoring period. Maintenance will include watering, weeding around the base of installed plants, pruning, replacement, re -staking, and any other measures needed to ensure plant survival. Survival The property owner shall be responsible for the health of 100% of all newly installed plants for one growing season after installation has been accepted by the City. A growing season for these purposes is defined as occurring from spring to spring (March 15 to March 15 of the following year). For fall installation, the growing season will begin the following spring. The property 8229 Talbot Road 18 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 owner shall replace any plants that are failing, weak, defective in manner of growth, or dead during this growing season. Installation Timing for Replacement Plants Replacement plants shall be installed between October 15 and March 15, unless otherwise determined. Standards for Replacement Plants Replacement plants shall meet the same standards for size and type as those specified for the original installation, unless otherwise directed by a qualified professional. Herbicides / Pesticides Unless deemed absolutely necessary by the consulting biologist and/or the City, chemical controls shall not be used in the critical areas or their buffers. Any chemical controls used shall be applied by a licensed applicator following all label instructions. Irrigation / Watering Water should be provided to the plants in the buffer enhancement area during the dry season (July 1 through October 15) for the first two years after installation to ensure plant survival and establishment. Water should be applied at a rate of 1" of water twice per week for year one and 1" per week during year two. 9.5 CONTINGENCY PLAN If 20% of the plants are severely stressed during any of the inspections, or it appears 20% may not survive, additional plantings of the same species may be added to the planting area. Elements of a contingency plan may include but will not be limited to more aggressive weed control, pest control, mulching, replanting with larger plant material, species substitution, fertilization, soil amendments, and/or irrigation. 9.6 PLANTING NOTES Plant in the early spring or late fall and obtain all plants from a reputable nursery. Care and handling of all plant materials is extremely important to the overall success of the project. The origin of all plant materials specified in this plan shall be native plants, nursery grown in the Puget Sound region of Washington. Some limited species substitution may be allowed, only with the agreement of the landscape designer, wetland biologist, and/or City staff. Handling Plants shall be handled so as to avoid all damage, including: breaking, bruising, root damage, sunburn, drying, freezing or other injury. Plants must be covered during transport. Plants shall not be bound with wire or rope in a manner that could damage branches. Protect plant roots with shade and wet soil in the time period between delivery and installation. Do not lift container stock by trunks, stems, or tops. Do not remove from containers until ready to plant. Water all 8229 Talbot Road 19 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan ,7une 25, 2021 plants as necessary to keep moisture levels appropriate to the species horticultural requirements. Plants shall not be allowed to dry out. All plants shall be watered thoroughly immediately upon installation. Soak all containerized plants thoroughly prior to installation. Bare root plants are subject to the following special requirements, and shall not be used unless planted between October 15 and March 1, and only with the permission of the landscape designer, wetland professional, and City staff. Bare root plants must have enough fibrous root to ensure plant survival. Roots must be covered at all times with: mud and/or wet straw, moss, or other suitable packing material until time of installation. Plants whose roots have dried out from exposure will not be accepted at installation inspection. Storage Plants stored by the property owner for longer than one month prior to planting shall be planted in nursery rows and treated in a manner suitable to those species' horticultural requirements. Plants must be re -inspected by the wetland biologist and/or landscape designer prior to installation. Damaged plants Damaged, dried out, or otherwise mishandled plants will be rejected at installation inspection. All rejected plants shall be immediately removed from the site. Plant Names Plant names shall comply with those generally accepted in the native plant nursery trade. Any question regarding plant species or variety shall be referred to the landscape designer, wetland professional, or City staff. All plant materials shall be true to species and variety and legibly tagged. Quality and condition Plants shall be normal in pattern of growth, healthy, well -branched, vigorous, with well - developed root systems, and free of pests and diseases. Damaged, diseased, pest -infested, scraped, bruised, dried out, burned, broken, or defective plants will be rejected. Plants with pruning wounds over V in diameter will be rejected. Roots All plants shall be balled and burlapped or containerized, unless explicitly authorized by the landscape designer and/or wetland professional. Rootbound plants or B&B plants with damaged, cracked, or loose rootballs (major damage) will be rejected. Immediately before installation, plants with minor root damage (some broken and / or twisted roots) must be root -pruned. Matted or circling roots of containerized plantings must be pruned or straightened, and the sides of the root ball must be roughened from top to bottom to a depth of approximately half an inch in two to four places. Bare root plantings of woody material are allowed only with permission from the landscape designer, wetland professional and/or City staff. 8229 Talbot Road 20 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 Sizes Plant sizes shall be the size indicated in the plant schedule in approved plans. Larger stock may be acceptable provided that it has not been cut back to the size specified, and that the root ball is proportionate to the size of the plant. Smaller stock may be acceptable, and preferable under some circumstances, based on site -specific conditions. Measurements, caliper, branching, and balling and burlapping shall conform to the American Standard of Nursery Stock by the American Association of Nurserymen (latest edition). Form Shrubs shall have multiple stems and be well -branched. Timing of Planting Unless otherwise determined by City staff, all planting shall occur between October 15 and March 15. Overall, the earlier plants go into the ground during the dormant period, the more time they have to adapt to the site and extend their root systems before the water demands of spring and summer. Weeding Existing and exotic vegetation in the restoration and enhancement areas will be hand -weeded from around all newly installed plants at the time of installation and on a routine basis throughout the monitoring period. No chemical control of vegetation on any portion of the site is recommended. Site conditions The contractor shall immediately notify the landscape designer and/or wetland professional of drainage or soil conditions likely to be detrimental to the growth or survival of plants. Planting operations shall not be conducted under the following conditions: freezing weather, when the ground is frozen, excessively wet weather, excessively windy weather, or in excessive heat. Fertilizer Slow release fertilizer may be used if pre -approved by the City. Fertilizers shall be applied only at the base of plantings underneath the required covering of mulch (that does not make contact with stems of the plants). No soil amendment or fertilizers will be placed in planting holes. Staking Most shrubs and many trees do not require any staking. If the plant can stand alone without staking in a moderate wind, do not use a stake. If the plant needs support, then strapping or webbing should be used as low as possible on the trunk to loosely brace the tree with two stakes. Do not brace the tree tightly or too high on the trunk. If the tree is unable to sway, it will further lose the ability to support itself. Do not use wire in a rubber hose for strapping as it exerts too much pressure on the bark. As soon as supporting the plant becomes unnecessary, remove the stakes. All stakes must be removed within two (2) years of installation. 8229 Talbot Road 21 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 Plant Location Colored surveyors ribbon or other appropriate marking shall be attached to the installed plants to assist in locating the plants while removing the competing non-native vegetation and during the monitoring period. Arrangement and Spacing The plants shall be arranged in a manner that will achieve the required performance standards for survival and percent cover throughout the enhancement areas. Inspection (s) A wetland biologist shall be present on site to inspect the plants prior to planting. Minor adjustments to the original design may be required prior to and during construction. 10.0 COST ESTIMATE AND FINANCIAL GUARANTEE Pursuant to ECDC 23.40.130.F, a financial guarantee is required to ensure that the mitigation plan is fully implemented. The financial guarantee shall be posted in accordance with ECDC section 23.40.290 ("Bonds to Ensure Mitigation, Maintenance, and Monitoring"). The financial guarantee must be in the amount of 120 percent of the estimated cost of the uncompleted actions or estimated cost of restoring the functions and values of the critical areas that are at risk, whichever is greater. The following is an estimate of materials and labor only. This does not represent a bid to install. Plants; 1 gallon - installed (418 @ $11.50ea) $4,807.00 Plants; 5 gallon - installed (12 @ $36.00ea) $432.00 Plants; 6' B&B - installed (4 @ $50.00ea) $200.00 Total $5,239.00 120% of Total Project Costs $6,286.80 8229 Talbot Road 22 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 11.0 USE OF THIS REPORT This Critical Area Study, Habitat Assessment, & Buffer Mitigation Plan is supplied to Christi and Todd Flynn as a means of evaluating wetlands and streams on and in the vicinity of the subject property as required by the City of Edmonds. This report is based largely on readily observable conditions and, to a lesser extent, on readily ascertainable conditions. No attempt has been made to determine hidden or concealed conditions. The laws applicable to environmentally critical areas are subject to varying interpretations and may be changed at any time by the courts or legislative bodies. This report is intended to provide information deemed relevant in the applicant's attempt to comply with the laws now in effect. The work for this report has conformed to the standard of care employed by wetland ecologists. No other representation or warranty is made concerning the work or this report, and any implied representation or warranty is disclaimed. Wetland Resources, Inc. Joie Goodman Senior Ecologist Professional Wetland Scientist 8229 Talbot Road WRI #20258 23 Critical Area Study, Habitat Assessment, & Buffer Mitigation Plan June 25, 2021 12.O REFERENCES Anderson, P.S., Meyer, S., Olson, P., and E. Stockdale. 2016. Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State. Washington State Department of Ecology. Publication # 16-06-029. Cowardin, L.M., V. Carter, F.C. Golet and E.T. Laroe. 1979. Classification of Wetlands and Deep Water Habitats of the United States. U.S. Fish and Wildlife Service. FWS/OBS 79/31. Edmonds, City of. 2021a. Edmonds Community Development Code, Title 23 Natural Resources. Ordinance 4218, passed March 2, 202 L Edmonds, City of. 2021 b. City of Edmonds GIS Webmap. http://www.edmondswa.gov/gis-text.html. Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.0 Melvin. 2016. Western Mountains, Valleys, and Coast 2016 Regional Wetland Plant List. Phytoneuron 2016-30: 1-17. Munsell Color. 2012. Munsell Soil Color Book. Munsell Color, Grand Rapids, MI. Snohomish County. 2020. PDS Map Portal online interactive mapping tool. https://snohomishcountywa.gov/3752/PDS-Map-Portal U.S. Army Corps of Engineers. 2018. National Wetland Plant List, version 3.4. Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory, Hanover, NH. http://wetland-plants.usace.army.mil/ US Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0). Vicksburg, MS US Department of Agriculture -Natural Resources Conservation Service. 2020. Web Soil Survey. http://websoilsurvey.nrcs.usda.gov/app/HomePage.htm. US Fish and Wildlife Service. 2020. National Wetlands Inventory (NWI) Online Mapper. http://www.fws.gov/wedands/Data/Mapper.html. Washington Department of Fish and Wildlife. 2020a. Priority Habitat and Species (PHS) Interactive Map. http://apps.wdfw.wa.gov/phsontheweb/. Washington Department of Fish and Wildlife. 2020b. SalmonScape Online Mapping Application. http://apps.wdfw.wa.gov/salmonscape/map.html. Washington Department of Natural Resources. 2020a. Forest Practices Application Mapping Tool (FPAMT). https://fortress.wa.gov/dnr/protectiongis/fpamt/index.html#. 8229 Talbot Road 24 Critical Area Study, Habitat Assessment, WRI #20258 & Buffer Mitigation Plan June 25, 2021 Washington Department of Natural Resources. 2020b. WA Wetlands of High Conservation Value online mapping tool. https://www.dnr.wa.gov/NHPwetlandviewer. 8229 Talbot Road WRI #20258 25 Critical Area Study, Habitat Assessment, & Buffer Mitigation Plan June 25, 2021 APPENDIX A: SHORELINE ENVIRONMENTS MAP " City of Edmonds Shoreline Environments Map w - i Lynn.rppd r = yr, Legend yF i... r: �'. Shoreline Environment n.. . Aquatic I ■ Aquatic II s - �-:• f Urban :x y • reflr°r ■ Conservancy ■ Natural _ ailraad _ a ■ Shoreline Residential I • c. `'' ; +y; .• . ■ Shoreline Residential II ■ Shoreline Residential III r� ;.s . - •• + ' -3 � •'-q- ■ Urban Mixed Use I Urban Mixed Use II ■ Urban Mixed Use III ,- :-S .-. • � Urban Mixed Use IV ■ Urban Railroad �' ��y •-c-' •'+ _� rye. � � r: . w `� a 161 ri All 4 �y s... y r • - -; .Ck ' AILNotes 1: 1,516 0 126.30 252.6 Feet 188.1 Z,ZS7 This ma is a user generated static output from an Internet mapping site and is for P B P PP B reference only. Data layers that appear on this map may or may not be accurate, WGS_1984_Web _Mercator _Auxiliary -Sphere current, or otherwise reliable. © City of Edmonds THIS MAP IS NOT TO BE USED FOR DESIGN OR CONSTRUCTION APPENDIX B: EXISTING CONDITIONS MAP EXISTING CONDITIONS MAP 8229 TALBOT ROAD PORTION OF SECTION 7, TOWNSHIP 27N, RANGE 4E, W.M. - - OHWM - - - - BUFFER - - LIMIT OF SHORELINE JURISDICTION EXISTING NATIVE VEGETATION - EXISTING IMPERVIOUS SURFACES Scale 1" = 50' 0 25 50 75 100 # Wetl�hd o�rrA5�5, 410 delineation I MRioetion I Restoration I Habitat Creation / Pennil Assistance 9505 19th Avenue S.E. Suite 106 Everett,Washington 98208 Phone : (425) 337-3174 Fax: (425) 337-3045 Email: mailbox@wetlandresources.com EXISTING CONDITIONS MAP 8229 TALBOT ROAD CITY OF EDMONDS Sheet 1/1 Christi and Todd Flynn WRI #: 20258 8229 Talbot Road Drawn by: JG Edmonds, WA 98026 Date: 6.25.21 APPENDIX C: CRITICAL AREA STUDY AND BUFFER MITIGATION PLAN MAP CRITICAL AREA STUDY & BUFFER MITIGATION PLAN MAP 8229 TALBOT ROAD PORTION OF SECTION 7, TOWNSHIP 27N, RANGE 4E, W.M. "00000000aa al o BUFFER ENHANCEMENT (2,020 SF) PROPOSED PAVED PARKING PAD (400 SF) Scale 1" = 30' 0 15 30 45 60 — "—' OHWM — — — — BUFFER — — LIMIT OF SHORELINE JURISDICTION EXISTING IMPERVIOUS SURFACES EXISTING NATIVE VEGETATION BUFFER ENHANCEMENT ADDITIONAL NATIVE BUFFER PLANTINGS IMIT OF SHORELINE JURISDICTION ROPOSED ORNAMENTAL PLANTINGS �i`, p00�00�0�00�0�000� o. �0000000,'00000•• ��i�i�i�i�i�i�i�i•�•iii�i�i�i�•��1� • -'� LAWN #/ W�taffq'I�P.�6W1&%g /#0 Celinealion I M6,.bon I Restoration I Habitat Creation I Permit Assistance 9505 19th Avenue S.E. Suite 106 Everett,Washington 98208 Phone: (425) 337-3174 Fax: (425) 337-3045 Email: mailbox@wetlandresources.com PROPOSED PEDESTRIAN TRAILS (MULCH) PERRINVILLE CREEK TYPE F 100'BUFFER EXISTING GRAVEL DRIVEWAY TO BE PAVED oP° A °o EXISTING CONDITIONS MAP 8229 TALBOT ROAD CITY OF EDMONDS Sheet 1/1 Christi and Todd Flynn WRI #: 20258 8229 Talbot Road Drawn by: JG Edmonds, WA 98026 Date: 6.25.21