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DNS BLD2022-0015+WETLAND+1.6.2022_8.31.09_AM+2606004BLD2022-0015 Skagit Wetlands & Critical Areas RECEIVED 22031 Grip Road Sedro Woolley, WA 98233 Jan 07 2022 (360) 391-9571 CITY OF EDMONDS skagitwetlands@hotmail.com DEVELOPMENT SERVICES DEPARTMENT October 2017 Wetland Delineation 806 Cary Road Edmonds, WA 98020 27032400214000 Section 24, Township 27 North, Range 03E RECEIVED NOV 07 2017 DEVELOPMENT SERVICES COUNTER Introduction During the summer of 2017, our firm conducted a wetland delineation for a 2.51 acre parcel located on the 800 block of Cary Road, in Edmonds, Washington (Township 27 North, Range 04 East, Section 24; Parcel # 27032400214600). The purpose of the study was to determine the existence, extent, and regulatory status of any streams and wetlands affecting the subject property. We found a single wetland partially on the property as wet] as noted the presence of a small stream (She] I Creek) on the eastern edge of the property fully within the wetland area. This small critical area system was previously assessed in 2014l2015 by our firm on the property directly to the south, with the findings, including a mitigation plan, subsequently approved by the City of Edmonds at that time. The property is the site of a proposed land division project where the existing lot is to be subdivided into two individual parcels. Both of the proposed new parcels will house one of the two existing homes currently on the property; no building projects are proposed at this time. The property is in an area long developed and part of the historic residential nexus of the City of Edmonds. All public utilities are already on the property, as is access to a public thoroughfare. While the property is partially encumbered by critical areas and their associated buffers, a land division has been designed that ensures buildability by current standards, with no mitigating measures necessary, with the exception of preservation of the existing conditions via the monumenting of a protective buffer. As such, a mitigation plan has not been prepared as part of this project; simply o a delineation report to address the boundaries of the wetlands mid/or streams as they were physically demarcated in the field, the rating of said wetland, and notation of the proper protection measures for review purposes and land division activities. Study Area The subject parcel is located in the City of Edmonds in an area of older homes on larger lots. All of the adjoining parcels are presently developed, some on larger lots (-1 acre), some on smaller, more traditionally sized suburban parcels. Currently the property is utilized as a single family home site for two adjoining homes on the western side of the property accessed off of Cary Road, a rustic single lane access. Roughly the eastern half of the property is un-built upon, with a large lawn fronting the home fading into landscaping and then again to a natural area that encompasses a small wetland and stream. The only natural vegetation is in this easternmost portion the property, adjacent to the small creek and wetland area, and even that area reflects the urbanized nature of the surroundings being heavily populated to invasive and noxious species. Overall the property is relatively level, sloping down gently From westto east, with the exception of the easternmost portion of the property, where the small creek and wetland depression has a more defined depression (depressional area also noted as a frequently flooded area). The creek flows south to north through the small wetland area, accepting site drainage from the subject property as well as all of the other similar abutting properties. Methods Methodology The methodology for the wetland portion of this assessment is dictated by the 1987 Corps of Engineers Wetland Delineation Manual supplemented by the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (version 2.0), the Washington State Wetland Rating System for Western Washington (Department of Ecology 2004), the Cowardin Classification System, and that portion of the City of Edmonds City Code known as Chapter 23. 2 Literature Review Prior to an onsite investigation, a literature review of available resources regarding this property was made with the following results: • The USDA Soil Survey of Snohomish County indicates no potential hydric soils onsite, or in the vicinity. • Review of available aerial photography shows no evidence of wetland presence in the immediate vicinity. • Washington State Department of Natural Resources mapping shows stream presence onsite/adjacent. • Mapping put forth by the Washington State Department of Fish and Wildlife indicates a stream onsite. • Washington State Department of Fish and Wildlife mapping indicates documented use by salmonid fishes onsite or within the adjacent mapped stream. ■ Mapping as available from the Washington State Department of Fish and Wildlife Priority Habitat and Species Program indicates no Priority Species or habitats of such have primary association directly with this property. • The National Wetland Inventory mapping shows no wetland presence onsite. Wetlands Fresh -der Emarwrt fres-r-ter FaresledrSnru6 EsWanne and Marine Deepwater Eswanne and Manna Fres"oler Pond L.K. Rrvedne Other Subject property highlighted in yellow (general). Criteria for Wetland Classification To qualify as wetland, three criteria must be met. These criteria refer to the presence of vegetation, soil types, and hydrology that are characteristic of wetland areas. Vegetation of wetlands consists of plants typically adapted to thrive in areas where anaerobic soil conditions prevail for a long portion of the growing season. Categories based on the likelihood of a particular plant occurring in association with wetland areas are the basis for determining whether a site meets the vegetation criteria. These categories are shown in Table 1 below. 3 Table 1 PIMA Indicator `~talus Cotcnorics' Indicator 1 Rdirntnr ('ateLont ,I;V Uetinitiarl OBLIGATE WETLAND PLAN7:5 ow- Plant" that tilrnost zdw=lys occur (estlilluted probtibility =>) ry } In wc_ri Inds under nattiral condition., but which may also occur rarely (estimated probobihrl' --1" ) in non)A=c(latids. Examples: 7ipha latfiblia, L3_sichIWt)t (7liICP3(Y7174lr77 FACULTATIVE WETLAND L ACW PLANTS FACULTATIVE- PLANTS FAC' $ FACULTATIVE UPLAND FACU PLANTS OBLIGATE UPLAND PLANTS I.R. Pluuts that u,stfally ocettrtcstima7ted prohabihty 67",a to 9y4i.) in Nvethu7ds, but n sn oewl,(estinratcd p+rotrtbility 1% to 3.3".-in nonwetlntids). Examples: 4 fcrcirn,s lrus/rrl;`cr Riot,, with Fit sinular likelihorxi (estimated pl,,*,tbiliiy 34%to 66%) ofoccurmig in both wethuids, and nounvOknds. ENaniples:.ilrnrf r0ro, Rube .s spec(altdis Plants that somethtics oceti r f esthiiated Ivobab(lity I1�'oto -33 %) in 4N Bands; lxat trctu• more ottcn (esthtj,,itcd probability 67`% to 991? ) in uonwetl.tnds, Ertntples: ,4cer �trG€crop{Il flfrrtr, Rub)o discolor Plants that r uv.Iv occur (estimated pi4xiLNhry <1%) iu+soilands, but occur ;dmostahvttys testitiutted probabihty-109%) in nonw•ctlands tlndernattnul atttdition5. Areas within the property that are dominated (greater than fifty percent) by facultative, facultative wetland, and/or obligate indicator plants meet the wetland criteria for vegetation. These areas also must meet soils and hydrology requirements to be delineated as a wetland. Soil types that occupy wetlands are hydric soils, or soils that are characteristic of reducing soil conditions. A hydric soil is a soil that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part (USDA NRCS 1995). The term "wetland hydrology" encompasses all hydrologic characteristics of areas that are periodically inundated or have soils saturated to the surface for a sufficient duration during the growing season. Areas with evident characteristics of wetland hydrology are those where the presence of water has an overriding influence on characteristics of vegetation and soils due to anaerobic and chemically reducing conditions, respectively. Such characteristics are usually present in areas that are inundated or have soils that are saturated to the surface for sufficient duration to develop hydric soils and support vegetation typically adapted for life in periodically anaerobic soil conditions (US Army Corps of Engineers 1994). Site [nspectioti We walked through the entire study area for a thorough visual coverage in late August of 2017 (previous inspection of feature in August 2014 and January of 2015). We sampled the soils, vegetation, and for indicators of near -surface hydrology to differentiate between wetland and upland conditions. We recorded 0 the data at 2 representative sample plot locations (singular wetland onsite). The wetland boundary was located and said boundaries flagged with sequentially -numbered (A1-7) pink flagging on surrounding vegetation stretching from the south property line to the north. Wetland flagging did not merge to congruence with the stream OHWM on this property, but does on neighboring properties to the north and south. Flagging was installed prior to the property being surveyed, and while some delineation flagging was placed offsite very slightly, this was unintentional. Offsite wetland areas were also inspected as fully as able with the southern area assessed as part of a project in 2015, while offsite to the north was inspected visually only (topography and open lawn made such relatively easy). While the wetland areas to the north were on private property, access via traverse of waters of the State and/or viewing from subject property gave a good representation of site conditions in addition to a variety of remote sensing images. While inspected, no intentional flagging or specific delineation was made offsite at this time. The wetland flag locations were subsequently collected via professional land survey. The general surrounding conditions were also collected by the field survey crew, including the stream location. Such representations were deemed accurate (stream location), especially as the stream is quite well defined as a feature to the south. Wetland location and configuration is shown in the supplied displays (West Alliance Surveying). Findings Wetlands A single wetland affects this property. From its beginning (southern point) as a depressional slice between the creek and the sloping bank, it widens into a fairly wide riparian wetland, and where the slope of the abutting uplands gentles to the north, has some small slope components as well as small drainage paths from upland sources (believed to be artificial drainage, not confirmed). Several hundred feet to the north of the subject property, the relief in the topography raises, and the wetland fades back into a narrow stream channel. The wetland, while small (— 1/2 acre via visual estimate and aerial imagery), it does have both forested and emergent dominated components (previous assessment as viewed from offsite indicated a separate shrub component, found to be inaccurate under further site review). In 2015, the wetland was rated utilizing the most up to date form (at that time) of the Washington State Department of Ecology Wetland Rating System for Western WA (WADOE Publication # 04-06-025). While the small wetland had both slope and riverine HGM components, for rating purposes, a depressional designation was used with a final category based on functions being a Category III wetland with a combined score of 31. A Category III rating was approved at that time. The rating breakdown was as follows: • Score for Water Quality Functions: 6 Score for Hydrologic Functions: 8 • Score for Habitat Functions: 17 As required by the City of Edmonds Municipal Code, the wetland was re -rated with the 2014 version of the Washington State Wetland Rating System for Western Washington. The same HGM designation was used (depressional) although slope and riverine components are present as well. As further investigation of the wetland feature was able to be made, some answers were affected, but now considered more accurate. A conservative rating was a Category III with 19 points (it is believed 18 points could be supported with further documentation). The rating breakdown is as follows: • Score for Water Quality Functions: 6 • Score for Hydrologic Functions: 8 • Score for Habitat Functions: 5 5 The wetland and its associated buffer serve best, in a functions and values consideration, as habitat support for the adjacent fish bearing stream; providing shading to promote a cooler and consistent riparian micro climate, forage for aquatic life both directly and indirectly, and contribution of woody debris necessary for salmonid shelter (among others). While water quality functions are contributed, as a landscape feature the function is rather low, as are hydrologic functions (regardless it is believed of the rating score in this area being inflated somewhat), but both are important considering the localized flooding and erosion known to persist in the area, as well as the long term development pressure and urbanized land use. While multiple site visits were made to the property and/or wetland feature, including a winter/wet season review, one hypothesis was not confirmed. It is believed that the portion of the wetland that is a narrow drainage swale between the subject property and the northern neighbor (wetland flags A-2 area) is artificial in nature, being a point source for the outfall of a drainage structure. The drainage path gives strong indication to being excavated, and the hydrology is not what one would expect from a natural seep (of its small size). Directly upslope of where this drainage begins is a large, historic debris pile, mainly old clay brick. It is suspected that if this brick was removed, one would find an outfall of a drain system. Similarly, drainage infrastructure was noted as recently installed on the neighboring property to the north, and it is likely that such infrastructure could (or already has) alter the wetland boundary over time.. However, this theory has not been confirmed or assessed in depth, and as such all of the area currently delineated should be considered regulated wetland at the present time. Assessment Factors 1) Soils The Soil Survey of Snohomish County Area, Washington published by the U.S.D.A. Soil Conservation Service (now the N.R.C.S.) lists the dominating soils of this property as two separate soil series, Alderwood gravelly sandy loam (urban land complex) in a swath across the northwestern portion of the property and Custer fine sandy loam throughout the remainder. Alderwood gravelly sandy loam is a moderately well drained soil formed under conifers in glacial deposits. Typically an Alderwood profile will have a surface layer and subsoil that is a dark brown, very dark brown, and grayish brown gravelly sandy loam above what is often a consolidated substratum usually found at 24-40 inches in depth. Upland areas in the vicinity had a typical profile where undisturbed with the C horizon not observed with soil pits dug in excess of 16 inches. The majority of the soils initially observed more closely matched Alderwood soils rather than Custer, as was the case on the previously inspected property to the south. Custer fine sandy loam is a poorly drained soil formed in sandy glacial outwash. Typically a Custer profile has an A (Ap) horizon to 9 inches of dark grayish brown fine sandy loam over a B (1321) horizon to 16 inches of dark reddish brown and dark grayish brown ortstien (cemented sand layer) concretions mixed with olive grey fine sand (60 and 40 percent respectively). Custer soils are considered to have hydric properties (due to the ortstien) from the poorly drained nature when artificial drainage is not present. However, site inspection did not reflect strong ortstien, the majority of the property was consistent with an Alderwood series soil, a sandy, gravelly loam. Within the wetland area onsite, the immediate indicator used for determination purposes was a strong hydrogen sulfide odor, although at the delineated edge, the soils met criteria F6, Redox dark surface, but failed to meet criteria on the upland side. 0 5-Alderwood-Urban land complex 13- Custer fine sandy loam 2) Hydrology Hydrology indicators used for wetland determination were saturated soils and a high water table, with some small areas and/or evidence of very shallow inundation. While initial site review was in late summer, a previous wet season review was consistent, with observations assumed to be at or very near the maximum groundwater levels, with little evidence of overbank flooding even though the creek level is very close to the surrounding topography of the adjacent drainage depression (although it is assumed to occur in a historic context). At no point is there any area of these wetlands that appears to have significant (greater than 8-12 inches depth of live storage) surface inundation at any time of the year and only in several very small, isolated pockets. Throughout the wetland areas, observed hydrology indicators were transferred visually via readily available topographical features in the offsite portions. Outside of the well defined drainageway/riparian zone, there was no natural positive wetland hydrology. Informal observation of dug soil pits throughout the property and site excavations showed no water table in excess of 20 inches of observed depth outside of the drainageway and associated slopes. In view of the topography and observed site conditions, the hydrology readily appears to be derived from the associated sub -surface drainage of Shell Creek (and as such directly hydrologically connected). The contributing basin of such hydrology is the entire of the upslope portion of the Shell Creek watershed, as well as surface water contributions from the rare overbank flooding, precipitation, and direct near surface drainage/runoff from abutting developed areas. 3) Vegetation The vegetation of the majority of the property is lawn and various landscaping that has been onsite in some form or another for many years (one of the homes onsite was noted as being built in 1936). While largely invasive/pioneering in nature, only the eastern portion of the property has any semblance of native vegetation. While wholly not inclusive, the upland portions of the property and those neighboring properties abutting the wetland and riparian corridor were observed to have dominating and notable populations of the following: Polystichum munitum, Sword fern, FACU Rubus ursinus, Trailing blackberry, FACU Ilex aquifolium, English holley, FACU Oemleria cerasiformis, Indian plum, FACU Rubus discolor„ Himalayan blackberry FACU Athyrium filix femina, Lady fern FAC Rubus spectabalis, Salmonberry, FAC Thuja plicata, Western red cedar, FAC Alnus rubra, Red Alder, FAC Poplus trichocarpa, Black cottonwood, FAC Ranunculas repens, Creeping buttercup, FAC Convolvulus sp., Morning Glory, NI Salix sp., Willow (various), FAC-FACW Hedera helix, English ivy, FACU The wetlands were very sparse overall in the vegetation diversity as is often the case in urban environments, but included the following: Tolmiea menziesii, Piggy back plant, FAC Ranunculas repens, Creeping buttercup, FAC Rubus discolor, Himalayan blackberry FACU Athyrium filix femina, Lady fern FAC Rubus spectabalis, Salmonberry, FAC Alnus rubra, Red Alder, FAC Poplus trichocarpa, Black cottonwood, FAC Lysichiton americanum, Skunk cabbage, OBL Eguisenan telmateia, Giant horsetail, FACW Oenanthe sarmentosa, Water parsley, OBL Convolvulus sp., Morning Glory, NI Salix sp., Willow (various), FAC-FACW Hedera helix, English ivy, FACU HCA's A single fish and wildlife habitat conservation area affects this property directly, a small stream known as Shell Creek. Per available mapping (see below) this stream is a fish bearing creek with direct access to Puget Sound. Site observations confirmed this. This is a small stream, prime habitat for some select salmonids, especially for Coho salmon, but possibly for Steelhead as well as resident/anadromous Coastal cutthroat trout. Other species may have incidental use as well, but the size and habitat composition of this stream are such to preclude most others. Mapping by WDFW indicates a modeled presence of only Coho, an accurate assumption based upon the small size of both the stream and substrate. The stream is perennial, with a winter flow through the property being 4-5 feet in width, braided in some areas. The stream channel is composed mainly of fine gravels with some shallow pockets and smaller instream woody debris. There does not appear to be much overbank flooding (the bank is well defined), but the stream meanders through a wet depressional area, especially north of the subject property, notably lower (5ft+/-) than the surrounding topography, although the drainageway becomes less defined farther south as the stream flows through a more defined cut. Area Stream Type Mapping .III .:... .... -. T—A -1011, AL'GE: 1';A1' CASPLH 9T SF 524 r, rt r 4401 NAVI, S I1 r' �+••• rt `11 Extent of mapped streams (Snohomish County). Subject parcel at red arrow. This stream has been mapped and subsequently typed utilizing the stream typing criteria of WAC 222-16- 030, which for onsite determinations based upon physical characteristics is determined by the standards of WAC 222-16-031. This typing is accurate, being a Type F (Type 3) stream, providing fish habitat for at least a portion of the year for anadromous salmonids, a fact confirmed by personal observation, statements by neighboring property owners, and per mapping/studies prepared at the behest of the City of Edmonds. While a small portion of the wetland fulfills riparian buffer functions on this property (more applicable on properties to the north), the majority of the riparian buffer on this property is the holly orchard, with only a very narrow fringe along the creek bank that is natural in any way. While holly trees are considered an invasive species, they do fulfill important functions in regards to their presence in a riparian buffer, most importantly as a source of shade, regulating stream temperature extremes directly and as a contributor to the micro climate of the riparian corridor as a whole. Regulatory Analysis The City of Edmonds City Code (ECC) 23.50.040(F) assigns a buffer of 105 feet for Category III wetlands with a habitat score of 5 per the Standard Wetland Buffer Widths Table. Fish bearing streams are afforded a 100-foot buffer in the City of Edmonds when anadromous fish presence is confirmed per ECC 23.90.040(D). The stream buffer is exceeded by the wetland and associated buffer and is considered void for purposes of assessment and mapping at this time. The proposal does not have a nexus to any potential impacts at this time, simply a land division to place the already existing homes on their own respective legal lot. At the discretion of the City of Edmonds, the I critical area and/or its associated buffer may be placed within a separate tract or easement, or simply noted as a protected area on the face of the plat. Mitigation Although historically impacted, the buffer area is functioning well in its present state as a reflection upon the functions and values present at implementation of all versions of applicable critical area regulations/ordinances. While non-native in part, the current vegetative regime provides good shading, erosion control, water quality preservation, and protection in the form of a protective barrier. The applicants are demonstrating stewardship of the area with numerous plantings of native species (of differing ages) observed, as well as observation of the maintenance of such. As the proposal has no attached impacts, and the buffer is functioning in its present state, there are no further recommendations for mitigation outside of the continual observation of the protective buffer for future development review, to be permanently monumented at the discretion of the City of Edmonds. Conclusions The current proposal for a two lot short plat is consistent with the standards put forth for wetland/HCA protection afforded by Edmonds Municipal Code and has no component that will have adverse affect on site critical areas, as proposed.. A Category III wetland is found onsite as well as a fish bearing stream. Both features have been previously been assessed with subsequent approval of designation by the City of Edmonds. A site map showing existing conditions has been attached for reference purposes only. For detailed plan set as well as final proposal display, the plan set prepared by the project surveyor should be reviewed. Respectfully submitted, Matt Mahaffie Skagit Wetlands & Critical Areas, LLC Disclaimer This wetland delineation is based upon physical circumstances that are described in manuals and publications utilized by Federal, State, and Local agencies. The wetland delineation methodology used in this report is consistent with the routine on -site determination method prescribed by the 1987 Corps of Engineers Wetland Delineation Manual and by the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys and Coasts Regional Supplement. No guarantees are given that the delineation will concur precisely with those performed by agencies with jurisdiction or by other qualified professionals. This report is provided for the use of the specified recipient only and is not intended for use by other parties or purposes. 10 Skagit Wetlands & Critical Areas Qualifications Skagit Wetlands & Critical Areas is a specialized service -oriented environmental consulting firm based in Sedro Woolley, WA. We provide a range of services to both the public and private sectors. Our services include: wetland assessments/delineations, biological assessments, restoration and mitigation plans, natural resource analysis and permitting, environmental regulatory compliance. Skagit Wetlands is currently staffed by Matt Mahaffie. Mr. Mahaffie is the principal ecologist, beginning land use work in the Puget Sound region in 2000, obtaining proprietorship of Skagit Wetlands in 2006. Mr. Mahaffie completed his Bachelor studies at Central Washington University with an emphasis on Natural Resource Management, with continual graduate and professional studies through Central Washington University and Portland State University, including a Professional Certificate in Wetland Delineation. In addition to being the principal ecologist for Skagit Wetlands, Mr. Mahaffie is also a Natural Resource Planner and staff biologist for Whatcom County Planning and Development Services. 11 References Brinson, M 1993. A Hydrogeomorphic Classification for Wetlands. U.S. Army Corps of Enginners, Washington D.C. Tech Report WRP-DE-4. Cooke, S.S. 1997. A Field Guide to the Common Wetland Plants of Western Washington and Northwestern Oregon. Seattle Audubon Society, Seattle, WA. 417 pp. City of Edmonds. Municipal Code. Available online: http:llwww.codel2ublishing.com/wa/edmonds/ Cowardin, L. M. V. Carter, F.C. Golet, E.T LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service, Washington, D.C. Jamestown, ND: Northern Prairie Wildlife Research Center [Online]. Available: htt://www.n wrc.us s1 ovlresourcell998lclassweticlasswet.htm Google Maps. 2017. Available online at [https://www.google.com/maps]. Accessed October 2016. Gretag-Macbeth. 2000. Munsell soil color charts. Nw Windsor, NY. Hitchcock, C.L. and A Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press. Seattle, WA. Mahaffie, M. 2014/2015. [personal observations] August 2, 2014, January 15, 2015, and August 28, 2017. Burlington, WA. Skagit Wetlands and Critical Areas. Olson, P. and E. Stockdale. 2010. Determining the Ordinary High Water Mark on Streams in Washington State. Second Review Draft. Washington State Department of Ecology, . Ecology Publication #08-06- 001. Lacey, WA Pojar, J. and A. MacKinnon. 1994. Plants of the Pacific Northwest Coast; Washington, Oregon, British Columbia, and Alaska. Lone Pine Publishing, Auburn, WA. 528 pp. USDA Soil Conservation Service (NRC-National Resource Conservation Service). 1987. Soil Survey of Snohomish County Washington. [Online]. Available: http://www.or.nres.usda.govlpnw soiilwarel2orts.html US Army Corps of Engineers. 1987. Wetlands Delineation Manual. [Online]. Available: htt://www,wettands.coTnlre s tl e02e.htm USFWS (US Fish and Wildlife Service). 2017. National Wetlands Inventory Map. [online]. Available: h :ltwetlandsfws.er.us s. y/wtlnds/launch.htmi Wetlands Inventory. National List of Vascular Plant Species that Occur in Wetlands: 1996. 206p. [Online]. Available: litl :lhvoilandsf%vs.L-r.us sl ov/Pubs9hvetlands lanitisi96, df WAC (Washington Administrative Code) WAC 222-16-031 Interim water typing system. [Online]. Available: hlrr�'�I++s+t+ lee.+rrr. ror�trrrc�uxler.ciin:'firscrrrllolr--sc?rlirr�7dei'tit11F=2??-liri �31 12 Appendices Appendix A: Wetland Delineation with Existing Conditions (West Alliance) Appendix B: Wetland Rating Form Appendix C: Representative Wetland Data Forms Appendix D: Site Photographs 13 Appendix A: Wetland Delineation with Existing Conditions (West Alliance) 14 Si IL 19 Appendix B: Wetland Rating Form 16 Weiland name or number RATING SUMMARY —Western Washington Name of wetland (or ID #f)_ Shell Creek Date of site visit: 8128/2017 Rated by M Mahaffie Trained by Ecology? i:dYes lUNo Date of training 15-Sep HGM Class used for rating Depressional a Flats Wetiand has multiple HGM classes? Yes UNo NOTE: Form is not complete with out the figures requested (figures can be combined) Source of base aerial photo/map Gooctle Earth Pro OVERALL WETLAND CATEGORY ill (based on functions if or special characteristics 1. Category of wetland based on FUNCTIONS Category I - Total score = 23 - 27 Category It - Total score = 20 - 22 X Category Ill - Total score = 16 -19 Category IV - Total score = 9 - 16 FUNCTION Improving HydWoglc Habitat Water Quality List appropriate rafiny {N M, L) Site Potential M M M Landscape Potential M H I. 'Value M H M Total Store Based on 5 8 S 19 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC Category Estuarine Wetiand of High Conservation Value Bog Mature Forest Old Growth Forest Coastal Lagoon lnterdunal (None of the above X Score for each function based on three ratings (adw ofrafings is no# important) 9=H,H,H 8=H,H,M 7=H,H,L 7=H,M,M U ri, M, L 6M,M;M 5=H,L,L 5=M,M,L 4=M,L,L 3 = L, L, L Welland Rating SysteM for Western WA! 2014 Update Rating Form - Effective January 1, 2015 1 W800T Adapted Form - March 2, 2015 17 Wetland name or number Maps and Figures required to answer questions correctly for Western Washington Map of: To answer questions: Figure # Cowardin plant classes 0 1-3, H 14, H 14 see notes, pg Hydropeflods 01,4, H 1,2 see notes, pg Location of outlet (Can be added to mae Of byclr duds) D 1.1, D 4A see notes, p Boundary of area within 150 R of the wetland (can be added to anoll`W figure) D 2-2, D 5-2 see notes, pll Map of the contributing basin D 4.3, D 63 attached 1 km Polygon: Area that extends 1 krn from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H Z 1, H ZZ H 2.3 attached Screen capture of map of 303(d) listed waters in basin (from Ecology webclte) D 3.1, b 3,2 attached Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3,3 attached Riveruie Wellands Map of: To answer questions: Figure # Cowardin plant classes H 1 1, H 1-4 Hydropenods H 12 Ponded depressions R 1.1 Boundaryof area within 150 ft of the wetland {can be aodd to another figure i R 2 4 Plant cover of trees, shrubs, and herbaceous plants R 12. R 4-2 Width of unit vs_ width of stream (can be added to another figure) R 41 Map of the contributing basin R 2 2, R 2 3. R 5 2 1 km Polygon: Area that extends 1 km from entire wetland edge - Including polygons for accessible habitat and undisturbed habitat H 2 1, H 2 2, H 2.3 Screen capture of map of 303(d) llstedwaters in basin;from FCONgy website) R 3,1 Screen ca tura of list of TMDLs for WRIA in which unit Is found (from web i R 3-2, R 3 3 Mee of: To answer questions: F urs # Cowardin plant classes L 1.1, L 4,1, H 1.1, H 14 Plant cover of trees, shrubs, and herbaceous plants L t.2 Boundm of area within 150 It of the wetland (can be added to another fi ume) L 2 2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1. H 2 2, H 2 3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Scree m capture of list of TM[)Ls for WRIA In which unit is found (from web) L 3 3 Map of, To answer queationa: Figure # Cowardin plant classes H 1 1, H 1 4 Hydropenods H 12 Plant cover of dense trees, shrubs. and herbaceous plants 81 3 Plant cover of dense, rigid trees. shrubs. and herbaceous plants (can be Added to another agate) S 4.1 Boundary of area within 150 /t of the welland (can be added onalher figure) S 21, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge- including pot sons for accessible habitat and undisturbed habitat H 2-1, H 2.2, H 23 Screen capture of map of 303(di listed waters in basin (from Ecofogywebsile) S 3,1, S 3.2 Screen Ga ptore of Ilst of TMOLs for WR1A In which unit is found (from web) S 3 3 Wetland Rating System for Western WA. 2014 Update Rating Form - Effective January 1, 2015 2 WSDOT Adapted Form - March 2, 2015 18 Wetland name or number HGM Classification of Wetland in Western Washington For questions 1 - 7. the onieria described must apply to the entire unit being rated It hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes In this case, identify which hydrologic criteria in questions 1 - 7 apply, and go to duestion 8 1. Are the water levels in the entire unit usually controlled by tides except during floods? U NO - go to 2 [_1 YES - the wetland class is Tidal Fringe - go to 1,1 1.1 is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? i_ NO - Saltwater Tidal Fringe (Estuarine) YES - Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for ftiverine weflands If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored- This method cannot he used to score functions for sstuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. r NO - go to 3 C.! YES - The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? i J The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; At least 30% of the open water area is deeper than 6.6 ft (2 m). NO - go to 4 11 YES - The wetland class is Lake Fringe (Lacustrine Fringe) 4 Does the entire wetland unit meet all of the following criteria' lA The wetland is on a slope (slope can be very gradual), 01 The water flows through the watiand in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheettiow, or in a swaie without distinct hanks i .; The water leaves the wetland without being impounded. i�1 NO - go to 5 AYES - The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually c3 ft diameter and less than 1 ft deep), 5. Goes the entire wetland unit meet all of the following criteria? r. The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, The overbank flooding occurs at least once every 2 years. L� NO - go to 6 0 YES - The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding. Wetland Rating System for Westem WA: 2014 Update Rating Form - Effective January 1, 2015 WSOOT Adapted Forrn - March Z 2015 19 Weiland name or number 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the Oferforof the wetland. n NO - go to 7 Fit YES - The wetland class is Depressional 7_ Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. 1 ' NO - go to 8 E, YES - The wetland class is Depressional 8 Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 901DA of the total area +3M classes within the wetland unit be!rated HGM class to use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream within boundary of depression Depressional Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE If you are still unable to d9termine which of the above criteria apply to your wetland, or if you have mote than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. NOTES and FIELD OBSERVATIONS: - farts of wetland have slope charactonstics, large part also has riverine charactoristics: however, overall depressional is appropriate for rating over both other HGM classes. x '- The wetland outlet is Shell Creek, a well defined and documented feature, no specific map required_ x'- Hydroperiods are to intermingled in this small wetland to map accurately; visual observation with the small size is adequate; no mapping deemed neccessary. x'- As above, Cowardin class mapping not feasible with small scale; only two classes with distinct breaks easily visually observable, no mapping applicable x `- 150' surroundings easily observable with small wetland in urbanized environment, no mapping applicable. Wetland Rating System for Western WA. 2014 update Rating Form - Effective January 1, 2015 4 WSDOT Adapted Form - Marcm 2, 2015 20 Wetland name or number Wetland Rating System for Western WA 2014 Update Rating Form - Effectye January 1, 2015 5 WSA4T Adapted Form - March 2 2015 21 Wetland name or number DEPRESSiONAL. AND FLATS WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation D 4 0 Does the site have the potential to reduce flooding and erosion? 0 4 1. C ha raglen§Wsf syrface water o tro m the vie tias Yi Wetland is a depression or flat depression with no surface water leaving it (no outlet) points = 4 Wetland has an Intermittently flowing stream or ditch; OR highly constricted permanently flowing outlet points = 2 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1 Wetland has an unconstricted. or slightly constricted, surface outlet that i5 permanently flowing points = 0 0 4 x Dept h of s(of adurim wet periods Estimate Vie IwigPtt of periling above the botforn of the outlet For wetlands with no outlet measure from the surface of permanent wafer or if dry. the deepest pars. Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 3 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 _j, The wetland is a ''headwater' wetland points = 3 Wetland is flat but has small depressions on the surface that trap water points = 1 Marks of rxi less than 0.5 ft 6 in irlts = 0 D 4 3. Contribution of the wetl nit to storarae in the watershed- Estimate the ratio of the area of upstream basin contributhxl surface water to the wetland to the area of the wetland unit itself The area of the basin is less than 10 times the area of the unit points = 5 3 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 limes the area of the unit points = 0 Entire wetland is in the Flats class Points = 51 Total for D 4 Add the Excints in the boxes abovel 8 Ratina of Site Potential If score is -12 - 16 = H 6 -11 = M 0 - 5 = L Record the rating on the first page D 5 0 Does the landscape have the potential to support hydrologic function of the site? D 5 1 Does the wetland unit receive stormwater dischar es? Yes = 1 No = 0 1 D 5 2 Is > 10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes=1 No=O 1 D 5 3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at >1 residencelac, urban. commercial, agriculture. etc.)? Yes=1 No=O 1 Tutal for D 5 Acid the ppints in the boxes aWvel 3 Rating of Landscape Potential If score is: ! 3 = H : 1 or 2 = M 0 = L Record the rating on the first page D 0 0 Are the hydro0clic functions provided by the site valuable to D6 1.-The vill i§ 10 a land5cap-es f1pUding p[oblemsChoose lbe description ttof best matches conditions around the wetland unit being rated. Do not add points Choose the hi_4hest The wetland captures surface water that would otherwise floe✓ down -gradient into areas where flooding has damaged human or natural resources (e-q., houses or salmon redds): a Flooding occurs in a sub -basin that Is immediately down - gradient of unit points = 2 2 ■ Surface flooding problems are in a sub -basin farther down - gradient points = 1 '_; Flooding from groundwater is an issue in the sub -basin. points = 1 yI The existing or potential outflow from the wetland is so constrained by human or natural conditions that the water stored by the wetland cannot reach areas that flood. Explain why points = 0 There are no problems with flooding downstream of the wetland poruts = 0 C7 6 2 Has the site been identified as smportant for flood storage or flood 0 conveyance In a regional flood control an? Yes = 2 No = 0 Wetland Rating System for Western WA7 2014 Update Rating Form - Effective January 1, 2015 7 VVSOOT Adapted Form - March 2. 2015 22 Wetland name or number Total for D G Add the points in the boxes above 2 Rating of Value If snore is: : t 2 - 4 - H i_J 1 Q M Li a = L Record the rafing on the fist page Welland mating System for Westem WA: 21714 Update Rating Form - Effective January 1, 2416 8 VVSOOT Adaptad Form - March Z 2015 23 Wetland name or number These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - Indicators that site functions to provide important habitat H 1 0 Does the site have the potential to provide habitat'? H 1 1 Structure of plant community, Indicators are Cowardin classes and strata Min t ie Forested class. Check the Cowardin plant classes in the wetland. Up to 10 patches may be combined for each class to meet the threshold of '/, ac or more than 109/6- of the unit if It is smaller than 2 5 ac- Add the number of structures checked _J Aquatic bed 4 structures or more. points = 4 2 � Emergent 3 structures: points = 2 Scrub -shrub (areas where shrubs have > 30% cover) 2 structures: points - 1 j Forested (areas where trees have > 30% cover) 1 structure: points = 0 If the unit has a Forested class. check if: `,I The Forested class has 3 out of 5 strata (canopy. sub -canopy, shrubs, herbaceous. moss/round—cover)) that each cover 20% Within the Forested polygon H 1.2. Hydroperiods Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or Y. ac to count (sae text for descriptions of hydroperiods ). _'i Permanently flooded or inundated 4 or more types present. points = 3 (11 Seasonally flooded or inundated 3 types present: points = 2 3 1 Occasionally flooded or inundated 2 types present: points = 1 _� 1I Saturated only 1 types present points = 0 Permanently flowing stream or river in, or adjacent to, the wetland D Seasonally flowing stream in, or adjacent to. the wetland �] Lake Fringe wetland 2 points 1 Freshwater tidal wetland 2 points _ H 1.3. Richness of plant species Count the number of plant species in the wetland that cover at least 10 ft2 Different patches of the same species can be combined to meet the size threshold and you do not have to name the species Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle If you counted: > 19 species points = 2 5 - 19 species points = 1 < 5 s Pecies points = 0 H 1.4. Interspersion of habitats Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none- If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 points Low = 1 point Moderate = 2 points All three diagrams �`~ —r— in this row are HIGH = 3 points Welland Rating System for Western WA. 2014 Update Rating Form - Effective January 1. 2015 9 WSDOT Adapted Form - March 2. 2015 24 Wetland name or number H l5 Special habitat features_ Check the habitat features that are present in the wetland The number of checks is the number of points Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long) l Standing snags (dbh > 4 in) within the wetland I Undercut banks are present for at least 6 0 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in; or contiguous with the wetland, for at least 33 ft (10 m) 2 _I Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) At least Ye ac of thin -stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-faying by amphibians) L-; Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1 f fa list of strata Total for H 1 Add the ve points in the boxes abo 10 Rating of Site potential If Score is —J! 15 -16 = H L� 7 -14 = M 00 - 6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat function of the site? H 21 Aomssible habitat (include only habitat that cfirecFly abuts watfartd unit ) Calculate: 1 % undisturbed habitat + ( 0 % moderate. & low intensity land uses 12) = 1 % If total accessible habitat is 0 >'/, (33,3%) of 1 km Polygon points = 3 20 - 33% of 1 km Polygon points = 2 10- 19% of 1 km Polygon points = 1 < 10 % of 1 km Polygon points = 0 I I :' 2 Undisturbed habitat in 1 km Polygon around the wetland Calculate 0 % undisturbed habitat + ( 42 % moderate & low intensity land uses ! 2) = 21% Undisturbed habitat -- 50% of Polygon points = 3 2 Undisturbed habitat 10 - 50% and in 1-3 patches points = 2 Undisturbed habitat 10 - 50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points::; 0 H 2 3 Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (-2) -2 s 50% of 1 km Polygon Is high inlensily po ints = 0 Total for H 2 Add the points in the boxes abover 0 Rating of Landscape Potential If Score is , 4 - 6 = H T - 3 = M ` < 1 = L Record the rating on the first page H 3 0 Is the habitat provided by the site valuable to society? 3A. Does the sr e provide habitat or species valued in laws, regulations- or policies?use only the highest score that applies to the wetland being rated Site meets ANY of the following criteria: points = 2 It has 3 or more priority habitats within 100 m (see next page) It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) It 1s mapped as a location for an individual WDFW priority species 1 It is a Wetland of High Conservation Value as determined by the Department of Natural Resources It has been categorized as an important habitat site in a local or regional comprehensive plan; in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) with In 100m points = 1 Site does not meet any of the criteria above points = 0 Wetland Rating System for Western WA: 2014 Update Rating Fomi - Effective January 1, 2015 10 WSDOT Adapted Form - March 2. 2015 25 Welland name or number Rating of Value If Score is �., 2 = li 1 M i 0 L Remd the rating on the first page Welland Rating System for Westem WA. 2014 Update Rating Form - rffective January 1, 2015 11 WSDOT Adaptors Form - Mash 2, 2015 26 Wetland name or number WDFW Priority Habitats Priorrty h$Irtats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife_ 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. hup_.flwdfw. Wa�,Aw [r tons/40't G5twdf% 1 G5. cad[ of access the list f rom here. tilt ll,,vdfw w2. VtI:L]nSeiYBGOtii 51tE8t% Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit NOTE- This question is independent of the land use between the wetland unit and the priority habitat. Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions it? WDFW PHS report). L'I Herbaceous Balds: Variable size patches of grass and (orbs on shallow soils over bedrock Old-growth/Mature forests: Ud•growth west of Cascade crest — Stands of at least 2 tree species, forming a multi -layered canopy with occasional small openings: with at least 8 treesfac (20 trees/ha) > 32 in (81 cm) dbh or > 200 years of age_ Mature forests — Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%, decay, decadence, numbers of snags; and quantity of large downed material is generally less than that found in old -growth, 80-200 years old west of the Cascade crest Oregon White Oak Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descnptioriis in WDFW PHS report p. 158— see web link above) Riparian. The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosysterns which mutually influence each other. Westside Prairies. Herbaceous, rion-forested plaid communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 — see web link above). Instream. The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for inst(eam fish and wildlife resources. Nearshore Relatively undisturbed nearshore habitats i hese include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore- (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report — see web link on previous page). Caves_ A naturally occurring cavity, recess, void; or system of interconnected passages under the earth in soils; rock; ice, or other geological formations and is large enough to contain a human Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation i; Talus. Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, andlor sedimentary rock, including riprap slides and mine tailings_ May be associated with cliffs. Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 13.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long Note All vegetated wetlands are by definition a priority habitat but are not included in this list because they are Wetland Rating System for Western WA: 2014 Update Rating Form - Effective January 1. 2015 12 WSD07 Adapted Form - March 2, 2015 27 Wetland name or number addressed elsewhere. Wetland Rating System for Western WA: 2014 Update Rating Form - Effective January 1, 2015 13 WSDOT Adapted Form - March 2. 2015 28 Wetland name or number CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Category Check oft any criteria that apply to the wetland List the cat when the a pro rite criteria are rrmei SC 1.0. Estuarine Wetlands Does the wetland meet the following criteria for Estuarine wetlands? i" The dominant water regime is tidal, I Vegetated, and With a salinity greater than 0.5 ppt Yes - Go to SC 1.1 ;7, No = Not an estuarine wetland SC 1.1 Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve; Natural Area Preserve, State Park or Educational; Environmental. or Scientific Reserve designated under WAC 332-30-151? Yes = Category I No - Go to SC 1.2 SC 1.2 Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Sparfina, see page 25) i _r At least'/ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un grazed or un-mowed grassland The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands Yes = Category I _ No = CategorV If SC 2.0. Wetlands of High Conservation Value(WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? 7Yes -Go to SC2.2 i-.;No - Go to SC2.3 SC 2.2. Is the wetland listed on the WDNR database as a Welland of High Conservation Value? 1' Yes = Category] :.71 No = Not WHCV SC 2.3- Is the wetland in- a SectiordTownship/Range that contains a Natural Heritage wetland? 1 r h mh ve tDdf Yes - Contact WNHP/WDNR and to SC 2.4 No = Not WHCV SC 2.4. Has WDNR Identified the wetland within the SITIR as a Wetland of High Conservation Value and listed it on their website? LA Yes = Cateclory I : J No = Not WHCV SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key. below If you answer YES you will still need to rate the wetland based on its functions. SC 3,1, Does an area within the wetland unit have organic soil horizons, either pests or mucks, that compose 16 in or more of the first 32 In of the soil profile? Yes - Go to SC 3.3 No - Go to SC 3.2 SC 3.2 Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? Yes - Go to SC 3.3 :_. No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? ': Yes = Is a Category I bog � ' No - Go to SC 3.4 NOTE If you are uncertain about the extent of mosses in the understory; you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep If the pH is less than 5 0 and the plant species in Table 4 are present. the wetland is a bog SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce; subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen. Engelmann spruce, or western white plrie, AND aI iv of the sl ecres (or combination of species) trsted Wetland Rating System for Western WA- 2014 Update Rating Form - Effective January 1, 2015 14 WSDOT Adapted Fomi - March 2, 2015 29 Wetland name or number in Table 4 provide more than 30% of the cover under the canopy? C_1 Yes = Is a Cateaory 1 boa M No = Is not Wetland Rating System for Western WA: 2014 Update Rating Form - Effective January 1, 2015 15 W800T Adapted Form - March 2, M 5 30 31 Wetland name or number SC 4.0. forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife's forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. Old -growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi -layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more, ;.1 Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). i.i Yes = Catenory I l i No r Not a forested wetland for this section SC 6.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? El The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) i Yes - Go to SC 5.1 F! No = Not a wetland In a coastal lagoon SC 5.1- Does the wet€anti rneet all of the following three conditions? {,, The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation; grazing), and has less than 20%cover of aggressive, opportunistic plant species (see list of species on p. 100), 1 J At least'/ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un- grazed or un-mowed grassland. %J The wetland is larger than'11, ac (4350 ft2) 1 1 Yea = Cat or I ] No = Cate0ory II SC 8.0, Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: j Long Beach Peninsula: Lands west of SR 103 t,A Grayland-Westport: Lands west of SR 105 Ocean Shores-Copalis: Lands west of SR 115 and SR 109 i_1 Yes - Go to SC 6.1 i= I No = Not an interdunal wetland for rating SG 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? 0 Yes = Category I ID No - Go to SC 6.2 SC 6 2 Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? F ; Yes = Category I ? No • Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? Yes Cateclory Ill Li No = Catenory IV Category of wetland based on Special Characteristics Ifyou answered No for all types, enter ' Not A livable' on Summa Form Welland Rating System for Western WA_ 2014 Update Rating form - Effective January 1, 2015 16 WSDOT Adapted Form - March 2. 2016 32 ■ dr i r 40 T Contributing Basin Wetland -0 1Yorihseruam Hindley »nti IN }�vM. J r1�f�v n+rt. 7MIIYw}r. +r'•'�� Edn+onds 4 ar Marsh � �1 �h'ellel»rgMr Puget. —Sauhd-- t k +Villew creek w�w� � wwyre r Shell. Creek Westgate Pond As derived from City of Edmonds Watershed Map; the contributing basin for the wetland in question is the majority of the Shell Creek basin above the wetland area (the majority of the wetland hydrology is derived from high groundwater associated with Shell Creek). 34 303d waters dam M.ler rryr<a TMDL waters 35 «t. y�.. y� * ..... •+�-. ter.- ♦+n.: y,. 36 Appendix C: Representative Wetland Data Forms 37 WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region Project Sao: Cary fload€ShoU Crook Cityic-ouMy: lidm2lidsLInob4n)lt;l! Sampling Date, WWII Appl(caralOwner Nate State WA Sampling point: opWet Investigator(s): N,ef(tt Section, Township, Range 'dl 1 Londform (hdisiopa, terrace, etc )•. groinaaa daDro� Local relief (canceva, convex• none); cdreava Stopo (%Al: 0 Subegon (LRR): g Lail Long: _ ©alum: _ Gail Map Unit Name; A[QervaoaalCuux NWlclassification: NM Are cGmatic f hydrologic conditions on the site typical for this lima ofyser7 Yes 0 No C3 (Ifna explain in Remarks) Are VoQ4tanor, 0. Soil d, w Hydrology D, significantly disturbod7 Are 'Normal Circumstances" prosont7 Yes No j Are Vegetation ❑, Soil ❑, or Hydrology ❑, naturallyprablematle7 (If needed, explain any answers in Remarks) SUMMARY Of FINDINGS - Attach site map sllowlrlg sampling point locations, transacts, important features, etc. 4ydrophytic Vegetation Pissont7 Yes 0 No ❑ Is the San V e it At e a 4ydoc Soil Present? Yes 0 No 0 wlthln a YYcil'"? Yes ® No 0 Netland Hydrology present? Yes ® No ❑ 2emarks: Data point taken & from Al towards A2, X wet side of line, areak in topo observable. Area Impacted by landscaping, such taken Intoatcount. 1rLVC I MIIVM— Ube rf4arrru Ili; IrMnreli VI lrr WrL/ Absolute Dominant Indicator hrrrt Blretum (Plot size; AW %icata soiloag Sly a „tus 1. Afnw ruhm QQ 3(g2 FAC' 2. 4. 60% = 20% = so = Tcol Cover `l4gWrylyhrub;3ttalvtr) (Plat size: 15) 1. CAUnd- rahryed EVtive1) 2. Qrajmi lihiuba, wrietl z 3, Corvtua rornuo �^¢ 4. j Herb Slrnlum 'Plot size: �) � 1. ,R�ni n�acu)as reverts .� 2, Afhvnum.&L .LliL [ii $ 3. SsBMdas L�90F!fi4 4. Mfxeyf a$&$ 01on. d io 11. tt1 p,QYyrnv Stmlym (Plot alto 1_ _ 2 50% F __ _, 20% -- _ Barr Ground in Herb Stratum ,§Q Remarks: Vag snared rriaintoined m this area fall of boundety"Pagraphy to South). U8 Army Corps of Eng(nsers aw OLL YU FACU = Total Cover ygs LAC as nla` = Tolel Cover - Total Cover edga un this property). Doni€nonce Test Worksheet: Number Of Do ranant Species 3 That Are OUL. FACW, or FAC' Total Number 01 Damm at 3 Spocres Across Ali Strad*. - percept cif Dominant SpIrcies That Are 4BL• FAC01, or fAC: Provaloncu lndax workshout: Total -% Cover of �I lv by, 08L species it - _ FACW%PGctes x2. FAC species x3+ FACUapociot xd= UPC "hips Column Totals. -.._ (A) _ (B) prevalence Indew = SIA Hydrophyllc Vegetation Indicators 0 1- Rapid Test for Hydrophytit Vegetation ❑ 2- Dominance Test is "0% ❑ 3. Prevalence Index is-3.0- Q 4. Mwphalog�ret Adaplalruas' SProvido supphng ar data in Remarks or an a aapdrste sheet) ❑ 5 - Welland Non -Vascular plants' 0 Problematic Hydophytic Vegetation' (Explain ilnditatorn of hydric sod and wetland hydrology must be present, unless disturbed or problematic. Hydrophyllc V4[jataum Yes Pretend? Papally to s0uar used to verify veg pattern (mulches Worland Western Mountains, Valleys, and Coast - Version 2 0 38 proAM9MGspG4n rDoom bw'btps,I6Vnerdw,.amca-%w4M*%wisrtaror:anitrmarsiCaewnurMOCOEV Wj Depth Matnx Redox Features inmes, 0al,r(imp Dcfit'. '< •=l"f -�"-5' '};r• Lvr' Texfrxle Remarks � � e i � ,� _, ay an Mh'. rxsoQanra'7r tle;Mr+s"rh� 1Q'f3fa2 35 9 "All _ m IZTIN M--M ratr:e ul 9-16= _ �'-':L•k Sit%.: : •'P.1�: _� .�i 53Td.' �'4�' F' .7R � li' 71'1.62 anl�3riiP jreF i-'-r:riE�3ttd!r am-vl'�r±71:n, ?!Li?'e"_LL'�'_d V30"0. C.'.-> taelFS ic�4Cl �3ra 3rslrrs. r r.Tli tl7: =L-«ors -irrg. 0-flair ±pyd[5C SCl OMCMM IAPP11CItIO eK LA7CAk. OMo ?=M%i yr U&I Rev Pfe�lealllLi 1+y0r1C Sorri+`: ❑ HfsM& IAt) ❑ £anay Redox ISS) ❑ 2cm Muck [Ar61 ❑ *t S70 EolpeWn (A2) ❑ SVtoped Vrnx lCc i ❑ Red Parent Watena3 jf_? ❑ 6413 HVUC (A3r ❑ Loamy MuckyMM.er3; (F1) (exC9pd ULRA 1) ❑ Vefy dItMow Dark Surrace rTFIZ) ❑ 1 SUTde :AS; ❑ L'aan. y r' Nair-S IF21 ❑ 01i!Lw ;EcH;Nn M R£•'ra*S ❑ Depeted EagVY Dark ❑ :a!ile"ed.fa", F3: ❑ TMa ON % n&4Dw Dii tr ":Jem ,FE, ❑ Sandy Mucky MlnerN (S 1) ❑ Depleted Dark Surface (F7 ) 'Indicators of hydropnyU vegetatlon and welland ❑ Sandy cj yed Ma7Ix (--d ❑ Redox DWesslons (F8) M1r'fbss dkturoed or mtxemav- ROW,Dbve Layer f f present(- Typi C�ewi� ;�nG•es' �yv t $one Praewna Yss [j Nd ❑ Rer^aMis nrm w gritnrg ar aurrarrr., mscoo-C&2 as F.n cr Lr nt. -Dr dater- nzo.on. rV Wetland Hydrology lndleators: . "nary Indicators rrnmmu- o+ore r"wN. d eca ay vvi awyl secondary rw caters =.2 ormore r"Lfred) ❑ rWwOWa*r(At) ❑ lYaier=;Ln•retlLeaves(69)x earlsf82, ❑ rrgr WXerTaale ;A2; tweepe ULRAA t, 2, JA, raga 48p prua t, 2, 4.%. anga6} ® `;3!tTJOEr' A.'_ ❑ Sa'r LC. F�,,1r91; Cl zmr7:2 rii^ 1i ra'. ❑ GRINE' VNM6 L 1 ❑ 4Q=c. ir'w_r . ob- CY INW, -x6e '.._ ❑ Sediment Deposits IB21 ❑ Hy"glen SunIde Cdor (C1 ❑ SxuraWn V-#1IKe an AWal W%efy IC3. ❑ --fm oepws rB3`, ❑ OIOCIted RViC6pheres along Lang RW6I01 E] C-Kmo"e pos,.*n rD: ❑ AIgaI Vat or Crust (Nd ❑ Presence of Reduced Non (Ca) C7 ;nx•WYY+#glFlJra>ID.:1 ❑ Im LMpXbi ;;dg,, ❑ teen lror'Red+.e4ror h nlea"ClIfi ZE ❑ fAC•+VB.EiN TFst v375r ❑ -U7xe .--Taos EA: ❑ -,LrlWff3r ?r---t,rLteA ❑ -NF-_a-I-rv:rr� 76. �Ilw.11 ❑ trardat-w Vsbe or',wen3iT%agel) 13" ❑ ro7�1&f is'rC'vs'11r? [] ftrrf e, '1�t.r �dr^.f!'otlriri.; ❑ ;pareery ► egMed Cpnm a Surface jN, rkAd ChaervaborM: lurface WalerPrewtO Yes [] 140 1''rltl'iefj• v_ Water TaD4Pmwrl' Yes ® lb DewinrnOes 1,3' ;ae.ran.n orE@ t*;- ties M NO ❑ waltlwswe lryawagy Pmwi:7 Y" ® he ❑ hdLd*V jWt4jrp Rr^yei Deeatoe Recorded Dxa rstr�am gauge" mo'vtarng >,� r, ai•rtar trvxa, pre+'oil rnspeCJans �. s a�alat r: ROmA?s: lli�er:3772 :dea4^1,Ar»rg 0[y SFasx {r:ay oe my3."-7r yUi�CFd n ay8!•pr :d �],yIr,71 nydrLA�rfj' HJ4Vp`'Er, nlatdied natWa! Oreak in ;ooD" VS Army Corps of Ergneerk WeSfern MDunt&S, Valleys, and Coast-VeMlon 2 0 39 WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region Project Sae- Cary RoadNheil Crte4 City/County: Edmondst5nohomt[h Sampling Date: B/28117 AppiicaM/pwmer Norton Stata: W6 Sampling Point DPUo Investigator(e) M- maltak Section, Township, Range 7d{27103 LandPorm (hlgdope, terrace, ant-): plefnp94 daps s:l_4n Local relief (concave, convex- none): ca - e Slope ('AY R Subregion (LRRI: A - Let: _ Long: _ Datum: T Sail Map Unit Name: WdernoarYC:udof NWlclsssAcaflow Noon, Are climate r hydrologic conditions on the site typical for ttils hme otyear? Yes No ❑ (If no. aKpiain In Remarks) Are Vegetation ❑, Soil ❑, or Hydrology 0, s7gnifiesnily disturbed? Are "Normal ClrcumsMnces"presenl2 Yes � No [.I Are Vegetation []. Soil 0, or Hydrology 0, naturally problematic? (If needed, explain any answers in Remadls,) SUMMARY OF FiNDINGS - Attach site man shovAl samniinpnoint locatlons. transects, imnorlant features, etc. Hydraptlydc Vegetation Presaril Yes 0 No ❑ Nyrblc Sal prasent4 Yes ❑ Na 0 Is the Sampled Area Yes ❑ No witnln a Wetland? Welland Hydrology Present? Yes ❑ No Remarks. Data point taken 5' south from A2 towards Al, 3' Upland side of line. Break in topo observable (approx 19` elevation above DPwet). Area Impacted by landscaping, such taken Into account wil 104 tim" ^ New 1V1e1111'1C' rnrfrluy B, p, TitL Stratum (Plot size: AW 'T A icim D hR Indic5o ;Rmttz 2" ConAnanca Testwarksheet: 1, Alnus M* B0 )(es PAC Number of Dpmin ant Species (A) 7 This: Arc UBL, FACW. at FAG- 3. .,.,�.. .� Tolrt NUMWI At Dominant 4. .Species Ate os7 All Sttako- b0 b = 20% - _ Q�] = Total Cover Percent of Doman[ Sparrie7 1 � {A!B) C a' r hry r um (Plot Sim 1 Thal Ara COL. FACW. of FAC. index worksneet: 1. Car+u: ra n+tJnredcutlrArl alL 2, ,� 10119117L Cover at MRIUVN t,vtly 3, _ 0 a L %peel a% �^ xt ; 4_ FACW %parries x2 • _T 6_ �� �� _� FAC species x3 = 50% < __, 20% • - NIA -= Total Gover FACU spec m x4 - Herb SUatum.l Plot siZe, aI UPL species x6 ` 1. Qdpurudaa reoens Yin? C Column Totals: - (A) ,,.,_.. (B) 2 �_ �� prevalence Index • B1A •,,,,_ 3. ____ Hydrophytic Veg4tatlon Indicators; 4, 1 -Rapid Tact fn, Hydrophy6c Vagalstion 6, C7 2 • Dominance Test is G(r4 6- r, © 3-Prevalence Index ls:�3.0` 7. ❑ 4 • Meiphmogiaml Adaptations' (Pravda supporting ®. 4 data in Remmlis or an a separate sheet} g, 6-Weland Non -Vascular Planis' 10. __ �� T. Problemat c Hy�opnyhc VAgNat on1 fExple n if. 60% = 204A 3R = Total Corer Indicators of hydric soil and wetland hydrology must . ---- --- be present, units% disturbed or problematic WoadvVirl. Strrwrlt (Pict Size: ,) 1- Hydropnytic Vegetation Yee ® No 50 k = . 20% = = Total Cover Present? °k Bare Ground in Herb Stratum 770 Remarks: Largely bare ground, due to heavy mulching and landscape mnlnt Nnl natural cendhons at shrublhelb levels US Army Corps of Engineers Western Mountains, Valleys, and Coax -Version 2.0 HE Project Site: Soft POW: Profile Dascriptlon: (Desert be to the depth needed to document the Indicator or confirm the absence of Indicators,) Depth Matrix Radox Featurat (inches] Cdot(melst) % Cow(moist) Y. Type` Loc' Texture Rolnarks - Mulch p3t,gi"U ftaunwd for daterminauan 9 iQ loyiga 3 14@ sandy lIm _ 10.18a Toy PJi`. Im �_ �„�� �,,, >andv iris radar bidin"iao eR" 'Type C- Cmcentratfon, D=Depleiion, RM=Reduced Matrix. CS -Covered w Coated Sand Grains. Lacntfw, PL=Pare Lining, M-Matrr+ Hydrtc SON Indicators: (Applicable to all L.RRs, unless otherwise noted,) indicators rorProblemalle Hydrlc Sall$': ❑ Hiviosol(At) ❑ Sandy Redox(S5) ❑ 2cm Muck(A10) C] HISUc Epipedon (AZ Cl Shipped Matrix (55) d Red Parent Material (TFZ) ❑ Black Hislic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) 0 Very Shallow Dark Surface (Tf12) ❑ Hydrogen Sulfide (A4) ❑ Loamy Glwyad Mahix (F2) ❑ Other (Explain in Remarks) CJ Depleted Below Dark Surface (Al 1) E) Depleted Matrix (F3) ❑ Thick Dark Surface CA12) ❑ Radox Dark Surface (FBI ❑ Sandy Mucky Mineral (Si) ❑ Depleted Dark Surface (F7) 'Indicators of hydrophyt(c vegetation and welland hydrology must be present, 0 Sandy Gleyed Matrix (541 ❑ Redox Depressions (FB) _ __unless disturbed or prohtematic _ Restrictive Layer fir present): T Type: - Depth (inches): HydNc Boils Present? Yes 0 No Remarks: minor past grading(fdling of surface, discounted as part of profile for dr4erminabon HYDR011.00Y Welland Hydrology Indicators: primary Indicators (minimum of ono required; check all that apply) 0 Surface Water (Al) ❑ Waior-Stained Leaves 09) ❑ High Water Table (A2) (except MLRA 1, 2, 4A, and 40) ❑ Saturation (A3) ❑ Salt Crust (all) ❑ Water Marks (01) ❑ Aquatic Invertebrates (B13) ❑ SedmeM Deposits (82) C7 Hydrogen Sulfide Odor ICU d Drift Deposits (B3) Q Oxidized Rh¢ospherres along Living Roots (C3) ❑ Algal Mat or Crust (B4) ❑ Presence of Reduced Iron (C4) Cl Iron Depes;ts (85) ❑ Recent Iron Reduction in Tilled Soils (06) Cl Surface Sort Cracks (86) ❑ Stunted or Stresses plants (01) (LRR A) ❑ Inundation Visible on Aerial Imagery (87) ❑ Other (Explain In Remarks) 0 Sparsely Vegetated Concave Surface (00) Field Cbservatloen: Surface We toe Present? Yes 0 No 10 Depth pnehes): Wittrl Table Areseni? Yes ❑ No ® Depth (inches?: Secondary Indicators (2 or more required) ❑ Water -Stained Leaves (B9) (INLRA 1, 2, 4A, and 48) ❑ Drainage Patterns (810) ❑ Dry -Season Water Table (CZ) C] Saturation Visible on Aerial Imagery (C9) C7 Geomorphic Position (D2) ❑ Shallow Aquittird (03) ❑ FAC-Neutral Test (05) ❑ Raised Ant Mounds 106) (LRR A) ❑ Frost-HeaveHummocks(071 5aturatlonPresent? Yea ❑ No ® DpptikOnches)' Welland Hydrology Present? Yes ❑ No 0 (inekido s c o pd nary Iri nge) Describe Recorded Data (stream gauge, monitoring well, aerial photos. previous inspections), if available: Remarks: Although minor impacts have occurred In area histoncaky and still maintained as landscaping area. 0 matched natural break in lopo that coindded With astabkehad line to saudt and is elevated well above observed and extrapolated water table in area. USArmy Corps of Engineers Western Mountains, Valleys, and Coast - Version 2.0 41 Appendix D: Site Photographs 42 Site Photographs Two views of the emergent portions of wetland; note the invasive domination onsite (above) and/or past conversion to lawn on the neighboring property to the north (below, approx. wetland edge in red looking north from property line). 43 ,.-., . tr ..•� - •ram—. - ',, ;�w. _...