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Wetland Delineation Report - PLN General - 4/30/2016
THE WETLAND CORPS �l Wetland Delineation - Habitat Management Plans - Riparian Restoration • Mitigation • Biological Evaluation MASON COUNTY PARCEL: 12108-75-00080 WETLAND DELINEATION REPORT E Stretch Island Drive N Grapeview,Wa Prepared for: Gerald and Wendy Boles Prepared by: Lee Boad and Heather Lane April 2016 PO Box 2854 Belfair,Washington 98528•Cell Phone 360-620-0618.Office Phone 360-372-2421•wetlandcorps@hotmail.com . .......... .................. -. ............... THE WETLAND CORPS `Wov Wetland Delineation - Habitat Management Plans - Riparian Restoration • Mitigation - Biological Evaluation PARCEL 12108-75-00080 WETLAND DELINEATION REPORT TABLE OF CONTENTS INTRODUCTION................................................................................................................... I GENERAL SITE CONDITIONS.......................................................................................... I METHODOLOGY.................. ......................................... 2 BACKGROUND INFORMATION....................................................................................... 2 WETLAND DELINEATION RESULTS............................................................................. 3 WETLAND EVALUATION..................................................................................................4 SUMMARY ................. ....... .................................... .................................................4 REFERENCES........................ ...................................................................................5 FiMes Figure 1. Site Vicinity Map Figure 2. Site Map Figure 3. National Wetland Inventory Map Figure 4. Mason County Soil Survey Map Figure 5. DNR Water Resource Map Appendices Appendix A. Routine Wetland Determination Data Forms Appendix B. Soil Survey Text Appendix C. Wetland Rating Form The Wetland Corps Wetland Delineation • Habitat Management Plans - Riparian Restoration - Mitigation - Biological Evaluation April 2016 Project#TWCI6W38 Page 1 MASON COUNTY PARCEL: 12108-75-00080 WETLAND DELINEATION REPORT E Stretch Island Drive NNW Grapeview,Wa INTRODUCTION The Wetland Corps has been authorized by Gerald and Wendy Boles to perform a wetland delineation and analysis at the property located off of E Stretch Island Drive N in Mason County, Washington, (Tax Identification Number: 12108-75-00080). The delineation was performed on April 12, 2016 to identify wetlands, streams and associated buffers that would be applicable to future use of the Parcel. The subject property is located in Section 8, of Township 21 North, Range 01 West WM (Figure 1 Vicinity Map). According to the Mason County Assessor,the Parcel collectively occupy 5.05 acres. For the purposes of federal, Washington State, and Mason County jurisdictional oversight, this wetland delineation followed the methodology outlined in 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 May 2010. WAC 173-22-035 states delineations should be done according to this manual and supplements. The changes became effective March 14, 2011. The sections below provide: (1) an introduction to the site; (2)a description of methods used in the field delineation; and,(3)technical results. GENERAL SITE CONDITIONS The property is accessed off of E Stretch Island Road N, which makes up the western property boundary. The parcel is bordered to the north, south, east and west by residential parcels of varying size and shape. The property is undeveloped, and contains no buildings or structures. In general, topography within the property entails moderate gradient slope down toward the wetland area located within the easternmost portion of the property. The ownership generally consists of two vegetative communities. A forested upland vegetative community borders the wetland swale within the property,and is comprised of a dense, mature overstory consisting of Douglas fir with a sparse understory that includes Oregon grape (Mahonia nervosa, UPL). A wetland community is situated within the lowest point of landscape topography, consisting of deer fern, slough sedge, spiraea, various willow species, salmonberry,and skunk cabbage. PO Box 2854 Belfair,Washington 98528-Cell Phone 360-620-0618.Office Phone 360-372-2421•wetlandcorps@hotmail.com Parcel 12108-75-00080 Wetland Delineation TWC No.15W38 April 2016 - Page No.2 METHODOLOGY Consistent with procedures detailed in the Washington State Wetlands Identification and Delineation Manual (Washington State Department of Ecology, 2011) (2011 Manual), preliminary information was gathered on the project site prior to the field review and delineation. General information sources included: 1974 United States Fish and Wildlife Service (USFWS) National Wetland Inventory (NWI) maps, the Soil Survey of Mason County Area, Washington (USDA, 1960), the Washington Department of Natural Resources Water Resource Map,and Mason County's critical areas regulations. Field Delineation The methodology used for this wetland delineation was consistent with the technical approaches articulated in the 2011 Manual. This document is the wetland delineation manual that is used in determining wetland areas when applying state and local government regulations under the Shoreline Management Act and the Growth Management Act in Washington State. The extent and location of suspect wetlands were determined during field work performed on April 12th, 2016. Field work was conducted under sunny conditions with an ambient temperature ranging between 65 and 75 degrees Fahrenheit. The time of year and recent precipitation history were considered in assessing the extent of the suspect wetlands presumed to exist on site. Specific field methodology used in determining the extent and location of wetland areas include: 1. As part of the initial project site reconnaissance, the site was walked to determine the general extent and location of potential wetland areas; 2. Wetland and upland sample plots were established in the identified potential wetland areas and in the adjacent upland area;and 3. Wetland boundaries were delineated with flagging by noting localized topography and vegetation patterns and comparing parameters of hydrology, soil, and vegetation with data collected at the wetland and upland sample plots. The project area was investigated and data was collected at two sample plot locations. Data collected at each sample plot were entered onto a Routine Wetland Determination Data Form (Washington State Department of Ecology 1997). Copies of data forms for each sample plot are provided in Appendix A. BACKGROUND INFORMATION Mason County Soil Survey The soil survey of Mason County indicates four onsite soil types, (USDA, 1960): Ha—Harstine gravelly ashy sandy loam, 6 to 15 percent slopes Hb—Harstine gravelly ashy sandy loam, 15 to 30 percent slopes PO Box 2854 Belfair,Washington 98528-Cell Phone 360-620-0618.Office Phone 360-372-2421-wetlandcorps@hotmail.com Parcel 12108-75-00080 Wetland Delineation TWC No.15W38 April 2016 Page No.3 Bd—Bellingham silt loam, 0 to 3 percent slopes Ld—Lystair sandy loam, 0 to 5 percent slopes A detailed soil description can be found in Appendix B Mason County Soil Survey Text. The Mason County Soil Survey map is shown in Figure 4. National Wetlands Inventory The USFWS NWI map (online wetlands mapper) shows no wetlands identified by the NWI within the site location. The nearest wetland is mapped directly to the south of the site and likely maintains a hydrological connection to the on-site wetlands. For the purpose of rating, the mapped wetland was rated as being a component of the onsite wetland. Department of Natural Resources Water Resource Map The Department of Natural Resources Water Resource Map shows no streams within the vicinity of the site. WETLAND DELINEATION RESULTS One wetland was identified within the ownership. The wetland is a Depressional wetland receiving seasonal surface runoff from surrounding topography and is also supported by groundwater. The portion of the wetland within the property is delineated in the field with blue ribbon. The wetland occupies a total area of approximately 3.5 acres, and extends south off of the property. The entire wetland contains a scrub shrub herbaceous community with a forested/shrub fringe along portions of the wetland perimeter. The wetland boundary was identified primarily by the abrupt transition from upland vegetation such as swordforn (Polystichum munitum, FACU) to obligate wetland vegetation such as slough sedge (Carex obnutpa, OBL), and skunk cabbage (Lysichiton americanus). The presence of obligate wetland vegetation in congruence with topography patterns and positive wetland hydrology indicators was used to identify the wetland boundary. Vegetation The majority of the wetland is dominated by an herbaceous community of skunk cabbage (Lysichiton americanus) and slough sedge (Carex obnupta, OBL). The perimeter of the wetland contains a forested/shrub fringe consisting of red alder (Alnus rubra, FAC) and western red cedar (Thuja plicata, FAC), with an understory of salmonberry (Rubus spectabilis, FAC+). Wetland vegetation is indicated by hydrophytic vegetation FAC and OBL dominating over 50 percent of the vegetation community in wetland data plots. The upland vegetation adjacent to the wetland area is comprised of Douglas fir (Pseudotsuga menziesii, FACU). Understory species consist of Oregon grape (Mahonia nervosa, UPL). Hydophytic vegetation occupies less than 50 percent of the vegetative PO Box 2854 Belfair,Washington 98528•Cell Phone 360-620-0618.Office Phone 360-372-2421•wetlandcorps@hotmail.com Parcel 12108-75-00080 Wetland Delineation TWC No.15W38 April 2016 Page NoA community in upland data plots. Soils The profiles within the test pits consisted of a single layer profile consisting of silt loam to 12 inches deep with matrix chroma IOYR 3/1 and 10YR 2/1. Wetland hydric soils are indicated by a loamy, mucky mineral soil containing a low-chroma (equaling one) in all wetland test pits. The soil profiles observed in known upland test pits were consistent with the mapped soil type. Upland test pits also exhibited a two-layer soil profile. The upper layer consists of sandy loam approximately eight to ten inches deep of matrix chroma 1 OYR 3/3. The lower profile contained less gravel with a matrix chroma of 10YR 6/3. No hydric soil indicators were present in upland soil test pits. Hydrology Wetland hydrology is indicated by drift lines, drainage patterns, FAC-neutral vegetation, drainage patterns, and water stained leaves, and inundation during the growing season. In addition,the sample plots within the wetland area revealed free water in the test pits at an eight inch depth and soil saturation to the surface. Upland test pits showed no indicators of wetland hydrology. WETLAND EVALUATION The wetland was classified as a Depressional wetland per Washington State Wetland Rating System for Western Washington (Hruby 2004). Based on functional attributes associated with the wetland including habitat, water quality, and hydrology functions, it has been rated as a Category III wetland, scoring 48 points on the state rating form. The score for water quality functions in this wetland is 24,hydrological functions scored 7,and the score for habitat functions is 17 (see Appendix C for rating form). According to Chapter 17.01.070 of Mason County Code, the base buffer width for Category III Wetlands scoring 17 points in habitat function, within parcels intended for Moderate Impact Land Use is 60 feet with an additional 15-foot building setback. Moderate Impact Land Use is described as single-family residential lots, residential subdivisions with 1 unittacre or less, Moderate-intensity open space (parks), New agriculture (moderate- intensity such as orchards and hay fields),and Transportation enhancement projects SUMMARY This wetland report documents the presence of a wetland meeting criteria for a Category III Wetland within the subject property. According to Mason County Code, the wetland requires a 60-foot buffer with additional 15-foot building setback. See Figure 2. Site Map for the approximate location of the wetland and the type N stream. Thank you for choosing the Wetland Corps as your environmental consultant. If you have any questions,feel free to call. PO Box 2854 Belfair, Washington 98528-Cell Phone 360-620-0618.Office Phone 360-372-2421•wetlandcorps@hotmail.com Parcel 12108-75-00080 Wetland Delineation TWC No.15W38 April 2016 Page No.5 Respectfully submitted, The Wetland Corps Heather Lane Staff Wetland Specialist Lee Boad Senior Ecologist PO Box 2854 Belfair,Washington 98528•Cell Phone 360-620-0618.Office Phone 360-372-2421•wetlandcorps@hotmail.com REFERENCES Cowardin,L.M.,V. Carter,F.C. Golet and E.T. LaRoe, 1979. Classification of Wetlands and Deepwater Habitats of the United States.U.S.Fish and Wildlife Service document FWS/OBS-79/31. 84 pp. Washington,D.C. Hitchcock,L.C. and A.Cronquist, 1973. Flora of the Pacific Northwest. University of Washington Press.. 730 pp. Hruby,T.,2004. Washington State Wetland Rating System for Western Washington—Revised. Washington State Department of Ecology Publication#04-06-025. Munsell Soil Color Charts, 1998. GretagMacbeth. New Windsor,New York. Pojar,J.and A.MacKinnon, 1994.Plants of the Pacific Northwest Coast. Lone PinePublishing. 528 pp. Vancouver,British Columbia. Speare-Cooke, S., 1997. A Field Guide to the Common Wetland Plants of Western Washington and Northwestern Oregon. Seattle Audubon Society. 417 pp. US Department of Agriculture,Soil Conservation Service. Soil Survey of Pierce County Area, Washington. September, 1977. US Fish and Wildlife Service. National Wetlands Inventory. 1978. Washington State Department of Ecology, 1997. Washington State Wetland Identification and Delineation Manual. Ecology Publication#96-94, various pagination. Olympia,Washington. Washington State Department of Ecology, 1993. Washington State Wetlands Rating System, Western Washington Second Edition. 61 pp.Ecology Publication#93-74. Olympia,Washington. Washington State Department of Ecology, 1999. Methods for Assessing Wetland Functions for Reverine and Depressional Wetlands in the Lowlands of Western Washington. Ecology Publication 499-115. Olympia, Washington. United States Fish and Wildlife Service, 1993.National List of Plant Species that Occur in Wetlands Region 9—Northwest. Resource Management Group PO Box 2854 Belfair,Washington 98528•Cell Phone 360-620-0618.Office Phone 360-372-2421•wetlandcorps@hotniail.com ------------ APPENDIX B Soil Survey Text HARSTINE SERIES Landscape--glacial drift plains Landform--ridges Slope--0 to 45 percent Parent material--sandy glacial drift with an influence of volcanic ash over dense glaciomarine deposits Mean annual precipitation--about 890 mm Mean annual air temperature--about 11 degrees C Depth class--moderately deep to a densic horizon Drainage class--moderately well drained Soil moisture regime--xeric Soil temperature regime--mesic Soil moisture subclass--typic TAXONOMIC CLASS: Coarse-loamy, isotic,mesic Vitrandic Dystroxerepts TYPICAL PEDON: Harstine gravelly ashy sandy loam, forested Oi--O to 1 cm; slightly decomposed twigs and needles;very strongly acid(pH 4.8); abrupt wavy boundary Oe--1 to 3 cm; decayed needles;very strongly acid(pH 4.8); abrupt wavy boundary Bwl--3 to 15 cm; gravelly ashy sandy loam, brown(10YR 5/3) dry, dark yellowish brown(IOYR 3/4)moist; weak very fine subangular blocky structure; soft,very friable, slightly plastic;many roots; 28 percent gravel and 2 percent cobbles;very strongly acid(pH 5.0); clear wavy boundary Bw2--15 to 36 cm; gravelly ashy sandy loam,yellowish brown(101YR 5/4)dry, dark brown(7.51YR 3/4)moist; weak fine subangular blocky structure; soft, very friable;many roots; 28 percent gravel and 2 percent cobbles; strongly acid (pH 5.4); clear wavy boundary Bw3--36 to 56 cm;gravelly ashy sandy loam, pale brown(1 OYR 6/3) dry, brown(IOYR 4/3)moist; weak fine subangular blocky structure; soft, very friable; many roots; 28 percent gravel and 2 percent cobbles; strongly acid(pH 5.4); gradual wavy boundary Bw4--56 to 81 cm; gravelly ashy sandy loam, light yellowish brown(IOYR 6/4)dry, dark yellowish brown(1OYR 4/4)moist; weak fine subangular blocky structure; soft,very friable; many roots;28 percent gravel and 2 percent cobbles;moderately acid(pH 5.6); abrupt wavy boundary 2Cd1--81 to 97 cm; dense glacial till that breaks to gravelly loamy sand, light brownish gray(IOYR 6/2) dry, grayish brown(2.5Y 5/2)moist;massive;very firm, hard; few roots in fractures; 22 percent gravel and 13 percent cobbles; moderately acid(pH 5.8);gradual wavy boundary 2Cd2--97 to 155 cm; dense glacial till that breaks to gravelly loamy sand, ai gr y sh brown(2.5Y 5/2)dry, light brownish gray(lOYR 6/2)dry;massive; very firm, hard; few roots in fractures;22 percent gravel and 13 percent cobbles;moderately acid(pH 5.8) TYPE LOCATION: Pierce County, Washington; 49 m east and 1219 m north of the southwest corner of section 36, T.22 N., R.1 E., at an elevation of 120 m, on a 4-percent slope; latitude 47.352001, longitude-122.835000, datum WGS 84(coordinates estimated from PLSS details) RANGE IN CHARACTERISTICS: Mean annual soil temperature--9 to 11 degrees C Moisture control section--dry 60 to 80 days Depth to densic contact--50 to 100 cm Particle-size control section *Content of rock fragments--0 to 35 percent gravel, 0 to 3 percent cobbles *Content of clay--5 to 15 percent *Reaction--4.5 to 6.0 *Thickness of volcanic ash influence--18 to 100 cm Estimated properties of layers influenced by volcanic ash *Content of volcanic glass in 0.02 to 2 mm fraction--5 to 20 percent *Ammonium oxalate Al plus 1/2 Fe--0.4 to 1.0 percent A horizon(where present) *Hue--7.5YR, 10YR *Value--3 or 4 dry or moist *Chroma--2 or 3 dry or moist *Thickness--thin Bw horizon *Hue--7.5YR, 10YR *Value--3 or 4 moist, 5 to 7 dry *Chroma--3 or 4 dry or moist *Redoximorphic features--fine faint in some pedons *Combined thickness--61 to 102 cm 2Cd horizon *Hue--l0Y1Z, 2.5Y *Value--4 to 6 dry or moist *Chroma--2 to 4 dry or moist *Texture--coarse sandy loam, loamy sand, sand *Content of rock fragments--0 to 35 percent gravel, 0 to 25 percent cobbles *Redoximorphic features--none to common faint concentrations along fractures *Thickness of 2Cd1 horizon--13 to 18 cm COMPETING SERIES: E1Capitan, Leidiu--very deep; buried A horizon Gilliam, Sulsavar, Vader, Sentinel--very deep Poulsbo--E horizon 3 to 10 cm thick Tenino--less than 50 percent sand in control section; 2C horizon with more than 60 percent rock fragments GEOGRAPHIC SETTING: Elevation--sea level to 120 m Climate--marine; cool, dry summers; mild, moist winters Mean annual precipitation--762 to 1397 mm Mean annual air temperature--I I degrees C Frost-free season--180 to 200 days GEOGRAPHICALLY ASSOCIATED SOILS: Bow, Kitsap--more than 18 percent clay Indianola--sandy Neilton--no duripan DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Drainage class--moderately well drained Saturated hydraulic conductivity(Ksat)--moderately high to densic horizon; low below densic horizon Perched water table--61 to 100 cm at times in January through April USE AND VEGETATION: Use--timber production,ha y ay and pasture,urban development, wildlife habitat Native vegetation--Douglas-fir, madrone,western hemlock, red alder, vine maple, salal, swordfern, Oregon grape DISTRIBUTION AND EXTENT: Northwestern Washington;MLRA 2; moderate extent MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon SERIES ESTABLISHED: Mason County, Washington; 1948 REMARKS: Diagnostic horizons and other features in this pedon *Ochric epipedon *Cambic horizon--zone from 3 to 81 cm *Depth to densic contact--81 cm *Densic horizon--zone from 81 to 155 cm *Volcanic glass--zone from 3 to 81 cm *Oxyaquic feature--perched water table at a depth of 61 to 100 cm at times in January through April *Depth to lithologic discontinuity--81 cm *Particle-size control section--zone from 28 to 81 cm 4/1994--The classification was updated, and the nomenclature of Bsim horizon was changed. The Harstine soils are on the border of criteria for sandy and coarse-loamy families. 1/2000--The classification was changed from mixed,mesic Vitrandic Durochrepts to isotic, mesic Vitrandic Dystroxerepts based on revisions to Soil Taxonomy. The Bsim horizon was changed to a Bsm horizon. 1/2013--This official series description(OSD)was updated as part of the soil data join recorrelation initiative. English units were converted to metric units, competing series were updated, 2Bsm horizon was changed to Cd horizon, reference to cementation was removed from 2Cdl horizon, ashy modifier was added to textures, and standardized Vitrandic subgroup volcanic glass characteristics were added to range of characteristics. Further investigation is needed to confirm the presence of volcanic glass in the series. Further investigation is also need to determine whether the 2Cd horizon is cemented with silica, which would make it a 2Bgm horizon. 12/2015--This official series description was updated according to SSRO1 Technical Note--Content and Format of Official Series Descriptions (revised 12/2015). Most of the changes were in formatting;no major technical changes were made. ADDITIONAL DATA: Riverside Soil Survey Laboratory data--73Wash-655-66 and 68 (R7357 and R7366) Appendix C Washington State Wetland Rating System Form g Approximate l� a Parcel Location LU W ! Y A ° n` Q-a st ert" Vic A i w �`e lslvo14 s° / E Ay li fir` a FIGURE 1. SITE VICIMTY MAP Project Name: PARCEL: 12108-75-00080 WETLAND DELINEATION REPORT Project Number: TWC15-W38 Client: Gerald and Wendy Boles �r Location: Grapeview,WA THE WETLAND CORPS Date: 4/2016 { E ISLAND CREST RD air All ilk 01 +'� w. � 1��r��F• e ax_ C This site map was created by TWC by Approximate Wetland Boundary Shown in Yellow coordinating measurements and information from several sources, including the Mason County GIS and GoogleEarth aerial images and field measurements. All locations are approximate. FIGURE 2. SITE MAP MASON COUNTY PARCEL: 12108-75-00080 WETLAND DELINEATION REPORT Project Number: TWC15-W38 L T Client: Gerald and Wendy Boles -�—HL 1 IYETL: I1 VD COR+p� Location: Grapeview, Wa Date: 4/2016 I National Wetlands Invento _ - 2 Available so Rip- FS { `.: Approximate Parcel Location �� �r .. ,t, ■ tub arin•and h7a t11N Dtepw+b© pr; ®Fatua Ant Ind Marin♦Ylttlt M1d ®Fnah.tbr 6ntrytnt Yitdand esn ■Fr.ah�a br fonabd/Shrub tYttlanc i�.�l� ■Fnahwbrpond .Othtr .Rivtrint iNafbnds lbppYg Sdtus . No Data %500 m O Figure adapted from the Figure 3. NWI Map NWI Mapping Website Section 8 Township 21 North Range 1 West FIGURE 3. NWI WETLANDS MAP Project Name: PARCEL: 12108-75-00080 7: WETLAND DELINEATION REPORT THE WETLAND CORPS Project Number: TWC15-W38 ' Client: Gerald and Wendy Boles Location: Grapeview,WA Date: 4/2016 I Approximate Parcel Location !I j I { 'I �i iq Mason County Soil Survey G Ha—Harstine gravelly ashy sandy loam, 6 to 15 percent slopes 1 Hb—Harstine gravelly ashy sandy loam, 15 to 30 percent slopes Bd—Bellingham silt loam, 0 to 3 percent slopes l Ld—Lystair sandy loam, 0 to 5 percent slopes FIGURE 4. MASON COUNTY SOIL SURVEY Project Name: PARCEL: 12108-75-00080 WETLAND DELINEATION REPORT Project Number: TWC15-W38 Client: Gerald and Wendy Boles Location: Grapeview,WA Date: 4/2016 THE WETLAND CORPS S Approximate Parcel Location ' 17036i64 f ( � t ;f f r 1 I 8 r , � 41 �1 TX TC h' J 1 j 1 � If' 1 170.13644 1 600f1 , % E STREAMS F Water Type S.F,N f (Np or Ns when knoum) U U.unknoun `)( X,non-typed per WAC 222-16 " Water Type Change TRANSPORTATION ,00^/Paved Road /v Unpaved Road! Surface Unknown Abandoned Road(not on Activity m"P) Orphaned Road(not on Aetitity map) i Trail 1-k- Railroad FIGURE 5. WA DNR WATER RESOURCE MAP Project Name: PARCEL: 12108-75-00080 WETLAND DELINEATION REPORT W 71 Project Number: TWC15-W38 THE WETLAND CORPS Client: Gerald and Wendy Boles Location: Grapeview,WA Date: 4/2016 Wetland name or number WETLAND RATING FORM - WESTERN WASHINGTON Version 2-Updated July 2006 to increase accuracy and reproducibility among users Updated Oct.2008 with the new WDFW definitions for priority habitats Name of wetland(if known):Parcel 12108-75-00080 Wetland Date of site visit:4/13/2016 Rated by:Heather Lane Trained by Ecology? Yes 0 No ❑ Date of training:10/06 SEC:08 TOWNSHP:21N RNGE: 1 W Is S/T/R in Appendix D? Yes[] No Map of wetland unit: Figure 2 Estimated size <5 acres SUMMARY OF RATING Category based on FUNCTIONS provided by wetland: ❑ 1 ❑II ®III ❑ IV Category I= Score>70 Score for Water Quality Functions 24 Category H= Score 51 -69 Score for Hydrologic Functions 7 Category III= Score 30-50 Score for Habitat Functions 17 Category IV= Score<30 TOTAL Score for Functions 48 Category based on SPECIAL CHARACTERISTCS of Wetland ❑I ❑n ® Does not apply Final Category(choose the"highest"category from above") III Summary of basic information about the wetland unit. Wetland Unit has Special Wetland HGM Class Characteristics used for Rating Estuarine ❑ De ressional Natural Heritage Wetland ❑ Riverine ❑ Bog Lake-fringe Mature Forest Slope Old Growth Forest ❑ Flats ❑ Coastal Lagoon ❑ Freshwater Tidal ❑ Interdunal ❑ ❑ None of the above ® Check if unit has multiple El classes resent Does the wetland being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland. Check List for Wetlands that Need Additional Protection YES NO in addition to the protection recommended for its category) SP1. Has the wetland unit been documented as a habitat for any Federally listed Threatened or Endangered animal or plant species(TIE species)? ❑ For the purposes of this rating system,"documented"means the wetland is on the appropriate state or federal database. SP2. Has the wetland unit been documented as habitat for any State listed Threatened or Endangered animal species? For the purposes of this rating system,"documented"means the ❑ wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category 1 Natural Heritage Wetlands see p. 19 of data form). SP3. Does the wetland unit contain individuals ofPriorltY species listed by the WDFW or the state? ❑ SP4. Does the wetland unit have a local significance in addition to its functions? For example,the wetland has been identified in the Shoreline Master Program,the Critical Areas Ordinance,or ❑ in a local management plan as having special significance. To complete the next part of the data sheet you will need to determine the Hydro2eomorphic Class of the wetland being rated The hydtugeomorphic classification g uups wetlands m to those that fimction m similar-ways.This simplifies the questions needed to amwwhow well the wetland fimctions.The HydrpgeOmeaphic Class ofa wetland can be downnined usingthe key below.Seep.24 formore dewed hrftiucions on classifying wetlands. Wetland Rating Form-Western Washington,Version 2(7/06),updated with new WDFW definitions Oct.2008 Page 1 of 12 Wetland name or number Classification of Vegetated Wetlands for Western Washington If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case,identify which hydrologic criteria in questions 1-7 apply,and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides(i.e.except during floods)? ®NO—go to 2 ❑YES—the wetland class is Tidal Fringe If yes,is the salinity of the water during periods of annual low flow below 0.5 ppt(parts per thousand)? ❑YES—Freshwater Tidal Fringe ❑NO—Saltwater Tidal Fringe(Estuarine) If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands If it is a Saltwater Tidal Fringe it is rated as an Estuarine wetland Wetlands that were call estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions,and this separation is being kept in this revision. To maintain consistency between editions,the term"Estuarine"wetland is kept. Please note,however,that the characteristics that define Category I and II estuarine wetlands have changed(see p. I 2. The entire wetland unit is flat and precipitation is only source(>90%)of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. ®NO—go to 3 ❑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 meet both of the following criteria? ❑The vegetated part of the wetland is on the shores of a body of permanent open water(without any vegetation on the surface)where at least 20 acres(8ha)in size; ❑At least 30%of the open water area is deeper than 6.6(2 m)? ®NO—go to 4 [:]YES—The wetland class is Lake-fringe(Lacustrine Fringe) 4. Does the entire wetland meet all of the following criteria? ❑The wetland is on a slope(slope can be very gradual). ❑The water flows through the wetland in one direction(unidirectional)and usually comes from seeps. It may flow . subsurface,as sheetflow,or in a swale without distinct banks. ❑The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these types of wetlands except occasionally in very small and shallow depressions or behind hummocks(depressions are usually<3 ft diameter and less than 1 foot deep). ®NO—go to 5 ❑YES—The wetland class is Slope 5. Does the entire wetland meet all of the following criteria? ❑The unit is in a valley or stream channel where it gets inundated by overbank flooding from that stream or river. ❑The overbank flooding occurs at least once every two years. NOTE: The riverine unit can contain depressions that are filled with water when the river is not flooding.. ®NO—go to 6 ❑YES—The wetland class is Riverine 6. Is the entire wetland unit in a topographic depression in which water ponds,or is saturated to the surface,at some time of the year. This means that any outlet,if present is higher than the interior of the wetland. ❑NO—go to 7 ®YES—The wetland class is Depressional 7. Is the entire wetland located in a very flat area with no obvious depression and no overbank flooding. The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched,but has no obvious natural outlet. ❑No—go to 8 ❑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 floodplam,or a small stream within a depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGM4ES 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 your wetland. 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 class listed in column 2 is less than 10%of the unit,classify the wetland using the class that represents more than 90%of the total area. HGM Classes within the wetland unit being rated HGM Class to Use in Rating Slope+Riverine Riverine Slope+Depressional Depressional Slope+Lake-fringe Lake-fringe Depressional+Riverine along stream within bounds -Depressional Depressional+Lake-fringe Depressional Salt Water Tidal Fringe and any other class of Treat as ESTUARINE under wetlands with special freshwater wetland characteristics If you are unable still to determine which of the above criteria apply to your wetland,or you have more than 2 HGM classes within a wetland boundary,classify the wetland as Depressional for the rating. Wetland Rating Form—Western Washington,Version 2(7/06),updated with new WDFW definitions Oct.2008 Page 2 of 12 I Wetland name or number WATER QUALITY FUNCTIONS-Indicators that wetland functions to improve water quality. (anlY i score per box) D 1 Does the wetland have the potential to improve water quality? (see p.38) D 1.1 Characteristics of surface water flows out of the wetland: • Unit is a depression with no surface water leaving it no outlet Fi ure p g' ( ).....................................points=3 R • Unit has an intermittently flowing,OR highly constricted,permanently flowing outlet...points=2 • Unit has an unconstricted,or slightly constricted,surface outlet(permanentlyll'owing)..points=1 • Unit is a"flat"depression(Q.7 on key),or in the Flats class,with permanent surface 3 outflow and no obvious natural outlet and/or outlet is a man-made ditch.....................points=1 ❑ ditch is not permanently flowingtreat unit as "intermitlentl owin " Provide photo or drawing D 1.2 The soil 2 inches below the surface(or duff layer)is clay or organic(use NRCS definitions) YES points=4 NO points=0 D 1.3 Characteristics of persistent vegetation(emergent,shrub,and/or forest Cowardin class): • Wetland has persistent,ungrazed vegetation>=95%of area.........................................points=5 Figure II • Wetland has persistent,ungrazed vegetation>=1/2 of area...........................................points=3 • Wetland has persistent,ungrazed vegetation>= 1/10 of area.........................................points=1 • Wetland has persistent,ungrazed vegetation< 1/10 of area............................................points=0 5 Map of Cowardin vegetation classes D 1.4 Characteristics of seasonal ponding or inundation: This is the area of the wetland that is ponded or at least 2 months, but dries out sometime during the year. Do not count the area that is permanently Figure II ponded. Estimate area as the average condition S out of 10 years. • Area seasonally ponded is> 1/2 total area of wetland.....................................................points=4 • Area seasonally ponded is> 1/4 total area of wetland.....................................................points=2 4 • Area seasonally ponded is<1/4 total area of wetland.....................................................points=0 Map of H dro eriods Total for D 1 Add the points in the boxes above 1 _ 12 D 2 Does the wetland have the opportunity to improve water quality? (seep. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams,lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft.of wetland A stream or culvert discharges into wetland that drains developed areas,residential areas, farmed fields,roads,or clear-cut logging IVI Residential,urban areas,golf courses are within 150 ft.of wetland Wetland is fed by groundwater high in phosphorus or nitrogen Multiplier Other ®YES multiplier is 2 ❑NO multiplier is 1 2 ♦ TOTAL—Water Quality Functions Multiply the score from Dl by 132•then add score to table on p. 1 HYDROLOGIC FUNCTIONS-Indicators that wetland unit functions to reduce flooding and stream degradation. D 3 Does the wetland have the potential to reduce flooding and erosion? (see p.46) D 3.1 Characteristics of surface water flows out of the wetland unit • Unit is a depression with no surface water leaving it(no outlet).....................................points=4 • Unit has an intermittently flowing,OR highly constricted permanently flowing outlet....points=2 8 • Unit is a"flat"depression(Q.7 on key)or in the Flats class,with permanent surface 4 outflow and no obvious natural outlet and/or outlet is a man-made ditch.....................points=1 ❑ (If ditch is not permanently flowing treat unit as "intermittently flowing') • Unit has an unconstricted or slightly constricted surface outlet ermanentl owin ........points=0 D 3.2 Depth of storage during wet periods. Estimate the height of ponding above the bottom of the outlet. For units with no outlet measure from the surface of permanent water or deepest part(if dry). • Marks of ponding are 3 ft.or more above the surface or bottom of the outlet..................points=7 • The wetland is a"headwater"wetland............................................................................points=5 • Marks of ponding between 2 ft.to<3 ft.from surface or bottom of outlet.....................points=5 • Marks are at least 0.5 ft.to<2 ft.from surface or bottom of outlet................................points=3 • Wetland is flat(yes to Q.2 or Q.7 on key)but has small depressions on the surface that trap water.points=1 . Marks of ondrn less than 0.5 ft....................................................................................points=0 D 3.3 Contribution of wetland unit to storege in the watershed: Estimate the ratio o t e area o upstream basin contributing surface water to the wetland to the area of the wetland unit itself. • The area of the basin is less than 10 times the area of unit..............................................points=5 3 • The area of the basin is 10 to 100 times the area of the unit............................................points=3 • The area of the basin is more than 100 times the area of the unit....................................points=0 • Entire unit is in the FLATS class. oints=5 Total for D 3 Add the points in the boxes above 7 Wetland Rating Form—Western Washington,Version 2(7/06),updated with new WDFW definitions Oct.2008 Page 3 of 12 i Wetland name or number 1) 4 Does the wetland have the 0000rtunity to reduce flooding and erosion? (seep. 49) Answer YES if the unit is in a location in the watershed where the flood storage,or reduction in water velocity, it provides helps protect downstream property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coming into the wetland is controlled by a structure such as flood gate,tide gate,flap valve,reservoir etc.OR you estimate that more than 90%of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opportunity apply. Wetland is in a headwater of a river or stream that has flooding problems. Wetland drains to a river or stream that has flooding problems Wetland has no outlet and impounds surface runoff water that might otherwise flow into a river or stream that has flooding problems Multiplier ❑ Other ❑YES multiplier is 2 ®No multiplier is 1 1 ♦ 1 TOTAL—Hydrologic Functions Multiply the score from D3 by 134;then add score to table on p. 1 Comments: Wetland Rating Form—Western Washington,Version 2(7/06),updated with new WDFW definitions Oct.2008 Page 4 of 12 Wetland name or number These glfeshbn�sappli'ffiiv (lands c�fall HGM classes. Points HABITAT FUNCTIONS-Indicators that wetland functions to provide important habitat. (only 1 score per box) H 1 Does the wetland have the potential to provide habitat for many species? H 1.1 Vegetation structure(see P. 72): - Check the types of vegetation classes present(as defined by Cowardin)-Size threshold for each class is Figure Q 114 acre or more than 10%of the area if unit is smaller than 2.5 acres. Aquatic Bed Emergent plants Scrub/shrub(areas where shrubs have>30%cover) Forested(areas where trees have>30%cover) fthe unit has a forested class check if The forested class has 3 out of 5 strata(canopy,sub-canopy,shrubs,herbaceous,moss/ground-cover) that each cover 20%within the forested polygon. 2 Add the number of vegetation types that quali. I ou have: Map of Cowardin vegetation classes 4 structures or more.......points=4 3 structures.............points=2 2 structures.................... oints= 1 1 structure...............points=0 H 1.2 Hydroveriods(see p.73): Figure Check the types of water regimes(hydroperiods)present within the wetland. The water regime has to cover more than 10%of the wetland or 114 acre to count(see text for descriptions of hydroperiods). Permanently flooded or inundated 4 or more types present points=3 Seasonally flooded or inundated 3 or more types present points=2 Occasionally flooded or inundated 2 types present points=I Saturated only 1 type present points=0 Permanently flowing stream or river in,or adjacent to,the wetland Seasonally flowing stream in,or adjacent to,the wetland Lake-fringe wetland.....................=2 points Freshwater tidal wetland.............=2 points Map of hydroperiods 2 H 1.3 Richness of Plant Species(seep. 75): 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) 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 Lists species below if you want to: <- 19 species....................points=1 l p Y 5 species.........................points=0 H 1.4 Interspersion of Habitats(seep. 76): Decided from the diagrams below whether interspersion between Cowardin vegetation(described in H1.1),or the classes and unvegetated areas(can include open water or mudflats)is high,medium,low,or none. CD (a) (*) (�) Figure❑ None=0 points Low=1 point Moderate=2 points �s c� fnn paan braided channels] High =3 points 1 Note: If you have 4 or more classes or 3 vegetation classes and open water,the rating is always"high". Use ma of Cowardin classes H 1.5 Special Habitat Features(seep. 77): Check the habitat features that are present in the wetland. The number of checks is the number of points you put into the next column. Large,downed,woody debris within the wetland >4 in.diameter and 6 ft.long) Standing snags(diameter at the bottom>4 inches in the wetland Undercut banks are present for at least 6.6 ft.(2m)and/or overhanging vegetation extends at least 3.3 ft.(lm)over a stream(or ditch)in,or contiguous with the unit,for at least 33 ft.(10m) ❑ Stable steep banks of fine material that might be used by beaver or muskrat for dennmg (>30 degree slope)OR si ns of recent beaver activity are present(cut shrubs or trees that have not yet turned grey/brown15 ❑At least 1/4 acre of thin-stemmed persistent vegetation or woody branches are present in areas that are permanently or seasonally inundated(structures for egg-laying by amphibians) ®Invasive plants cover less than 25%of the wetland area in each stratum of plants NOTE: The 20%stated in early printings of the manual on page 78 is an error. 3 H 1 TOTAL Score-potential for providing habitat Add the points in the column above 9 Wetland Rating Form-Western Washington,Version 2(7/06),updated with new WDFW definitions Oct.2008 Page 8 of 12 Wetland name or number H 2 Does the wetland have the opportunity to provide habitat for many species? (only 1 scor • H 2.1 Buffers(see P. 80): per box Choose the description that best represents condition of buffer ofwetland unit. The highest scoring Figure criterion that applies to the wetland is to be used in the rating. See text for definition of"undisturbed". ❑ 100m(330 ft)of relatively undisturbed vegetated areas,rocky areas,or open water> 95%of circumference. No structures are within the undisturbed part of buffer (relatively undisturbed also means no grazing,no landscaping,no daily human use).............points=5 ❑ 100m(330 ft)of relatively undisturbed vegetated areas,rocky areas,or open water> 50%circumference........................................................................................................points=4 ❑50m(170 ft)of relatively undisturbed vegetated areas,rocky areas,or open water >95%circumference....................................................................................................points=4 ❑ 100m(330 ft)of relatively undisturbed vegetated areas,rocky areas,or open water> 25%circumference........................................................................................................points=3 ®50m(170 ft)of relatively undisturbed vegetated areas,rocky areas,or open water for >50%circumference....................................................................................................points=3 If buffer does not meet any of the criteria above: ❑No paved areas(except paved trails)or buildings within 25m(80 ft)of wetland>95% circumference. Light to moderate grazing or lawns are OK..........................................points=2 ❑No paved areas of buildings within 50m of wetland for>50%circumference. Light to moderate grazing or lawns are OK.............................................................................points=2 ❑Heavy grazing in buffer.....................................................................................................points=1 ❑Vegetated buffers are<2m wide(6.6 ft)for more than 95%circumference (e.g.tilled fields,paving,basalt bedrock extend to edge of wetland).............................points=0 ❑Buffer does not meet any of the criteria above...................................................................points=1 3 Arial photo showing buffers 112.2 Corridors and Connections(seep.81) H 2.2.1 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor(either riparian or upland)that is at least 150 ft.wide,has at least a 30%cover of shrubs,forest or native undisturbed prairie,that connects to estuaries,other wetlands or undisturbed uplands that are at least 250 acres in size? (Dams in riparian corridors, heavily used gravel roads,paved roads, are considered breaks in the corridor). ❑YES=4 points(go to H 2.3) ®NO=go to H 2.2.2 H.2.2.2 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor(either riparian or upland)that is at least 50 ft.wide,has at least 30%cover of shrubs or forest,and connects to estuaries,other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake- fringe wetland,if it does not have an undisturbed corridor as in the question above? ❑YES=2 points(go to H 2.3) ®NO=go to H 2.2.3 H.2.2.3 Is the wetland: • Within 5 mi(8km)of a brackish or salt water estuary OR • Within 3 miles of a large field or pasture(>40 acres)OR ®YES= 1 point 1 • Within 1 mile of a lake greater than 20 acres? ❑NO=0 points Comments: 1 Wetland Rating Form—Western Washington,Version 2(7/06),updated with new WDFW definitions Oct.2008 Page 9 of 12 Wetland name or number 112.3 Near or adiacent to other priority habitats listed by WDFW(see p. 82): (see neir and complete descriptions of WDFW priority habitats,and the counties in which they can be found, in the PHS report http:G ivdfir.iva.gov'hah.nh.sli,vi,him) Which of the following priority habitats are within 330 ft.(100m)of the wetland unit? NOTE:the connections do not have to be relatively undisturbed. ❑Aspen Stands:Pure or mixed stands of aspen greater than 0.4 ha(I acre). ❑ Biodiversity Areas and Corridors:Areas of habitat that are relatively important to various species of native fish and wildlife(full descriptions in WDFW PHS report p. 152). ❑Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ❑Old-growth/Mature forests:(Old-growth west of Cascade crest)Stands of at least 2 tree species,forming a multi- layered canopy with occasional small openings;with at least 20 trees/ha(8 trees/acre)>81 cm(32 in)dbh or> 200 years of age.(Mature forests)Stands with average diameters exceeding 53 cm(21 in)dbh;crown cover may be less that 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:Woodlands Stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important(full descriptions in WDFW PHS report p. 158). ❑Riparian:The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ❑Westside Prairies:Herbaceous,non-forested plant communities that can either take the form of a dry prairie or a wet prairie(fill descriptions in PVDFW PHS report p. 161). ❑ Instream:The combination of physical,biological,and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ❑Nearshore:Relatively undisturbed nearshore habitats.These include Coastal Nearshore,Open Coast Nearshore, and Puget Sound Nearshore.(full descriptions of habitats and the definition of relatively undisturbed are in WDFW report•pp. 167-169 and glossary in Appendix A). ❑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 7.6 m(25 ft)high and occurring below 5000 ft. ❑Talus:Homogenous areas of rock rubble ranging in average size 0.15-2.0 in(0.5-6.5 ft),composed of basalt, andesite,and/or 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>51 cm(20 in)in western Washington and are>2 in(6.5 ft)in height.Priority logs are>30 cm(12 in)in diameter at the largest end,and>6 in(20 ft)long. If wetland has 3 or more priority habitats=4 points If wetland has 2 priority habitats=3 points If wetland has 1 priority habitat=1 point No habitats=0 points 1 Note:All vegetated wetlands are by definition a priority habitat but are not included in this list. Nearby wetlands are addressed in question H 2.4 H 2.4 Wetland Landscape: Choose the one description of the landscape around the wetland that best fits(seep.84) • There are at least 3 other wetlands within 1/2 mile,and the connections between them are relatively undisturbed(light grazing between wetlands OK,as is lake shore with some boating, but connections should NOT be bisected by paved roads,fill,fields,or other development....points=5 ❑ . The wetland is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlandswithin 1/2 mile................................................................................................points=5 ❑ • There are at least 3 other wetlands within 1/2 mile, BUT the connections between them are disturbed........................................................................................................................points=3 . The wetland fringe on a lake with disturbance and there are 3 other lake-fringe wetlands within1/2 mile...............................................................................................................points=3 ❑ • There is at least 1 wetland within 1/2 mile......................................................................points=2❑ • There are no wetlands within 1/2 mile........ 3 H 2 TOTAL Score—opportunity for providing habitat Add the scores fu•om H2.1, 112.2, H2.3, 112.4 8 TOTAL for H l front page 8 9 ♦ Total Score for Habitat Functions Add the points for H 1 and H 2;then record the result on p. I 1�J Comments: --- Wetland Rating Form—Western Washington,Version 2(7/06),updated with new WDFW definitions Oct.2008 Page 10 of 12 I Lee Boad Habitat Management Planning and Wetland Services Wetland Delineation • Habitat Management Plats • Riparian Restoration • Mitigation • Biological Evaluation LBHMPWS 131 Pg l of 5 Wetland Reconnaissance Report Parcel 12108-7540060 531 Eckert Road,Grapeview,WA 98546 1.0 Introduction At the request of Don and Tammie Zech, Lee Boad Habitat Management Planning and Wetland Services performed a wetland reconnaissance on the above referenced property. This work was requested in conjunction with development planning of the ownership. All field work and reporting has been performed by Lee Boad. The following is a summary of methodology and findings. Technical data is attached. 2.0 Methodology 2.1 Field Review A field review of the above referenced property was performed on July 26, 2005. Review consisted of the following: 1) Reconnaissance throughout the parcel to identify extent of wetlands. 2) Routine determination completed in four sample plots within identified wetland. 3) Delineation and flagging of wetland boundaries. 4) Categorization of identified wetland. 2.2 Wetland Delineation Wetland delineation followed a routine methodology based upon the Washington State Wetland Identification and Delineation Manual (1997) requiring positive indicators of wetland soil, hydrology,and plants. Wetland hydrology was determined through observation of field indicators and conditions dug in pits within the study area. Presence of hydric soil was determined by soil conditions in several pits dug around and within suspected wetlands. Soil inspection included comparison with the Munsell Color Charts (1992). General soil characteristics were derived from information contained within the Soil Survey of Mason County,Washington. (1960). Occurrence of wetland vegetation was determined through species identification, estimation of dominance and then assignment of wetland indicator status. Indicator status was assigned based on the National List of Plant Species That Occur in Wetlands(1996). PO Box 2854 Belfair,Washington 98528•Cell Phone 360-620-0618.Office Phone 360-372-2421•boad40@peoplepc.com i ✓ Wet land Delineation Grapeview, Washington LBHMPWS132 Page 2 of 5 23 Wetland Category Rating Procedures set forth in the Washington State Wedandv Rating System — Western Washington Second Edition were used to establish category ratings for identified wetlands. 2.4 Wetland Mapping A scaled plot map is enclosed showing the location of identified wetlands in relation to property lines. The locations were derived from distance measurements taken from the existing driveway to the identified wetlands. The driveway location was established using measurements taken from the eastern property Iine. 3.0 Results The ownership consists of approximately 5 acres with a wetland zone located within the far western portion. Eckert road represents the southern border of the ownership while Stretch Island Road represents the western border. A newly constructed driveway runs from south to north through the center of the property. Historically the ownership was managed as a vineyard as indicated by rows of old fence posts and remaining grape vines. Landscape gradient slopes gently downward from east to west. The eastern portion of the ownership is an open field area while the western portion of the ownership is a dense thicket of young deciduous trees with an understory dominated by exotic plant species. Soil Soil mapped and observed within upland portions of the study site is Lystair sandy loam, which is a somewhat excessively drained upland soil. This soil type is mapped throughout the eastern two thirds of the ownership and was confirmed in all the upland sample plots. Soil mapped and observed within the wetland portion of the site is Bellingham silt loam, which is a poorly drained silty soil common in lowland depressions. This soil qualifies as hydric soil according to the Washington State Wetland Identification and Delineation Manual (1997) and is therefore a wetland indicator. Hydrology Observed indicators of wetland hydrology include drainage patterns,FAC neutral vegetation, and drift lines. The wetland portion of the site appears to be supported almost entirely by seasonal high water tables. The wetland is also located in the lowest point of general landscape topography causing it to also function as a receptor of upland runnoff from the surrounding area. The wetland is hydrologically connected to another wetland system located southwest of the ownership. As the property has been historically used as a vineyard,many non-wetland sites have experienced a history of irrigation. Such activity has contributed to the presence of isolated patches of wetland vegetation within upland zones. PO Box 2854,Belfair,WA 98528 cell:360-620-0618,Office: 360-372-2421 e-mail:boad40@peoplepe.com Wetland Delineation Grapeview,Washington LBHMPWS132 Page 3 of 5 Vegetation Vegetative communities identified within wetland sample plots are comprised mostly of species that are largely restricted to wetland habitats. These included slough sedge (Carex obnupta), skunk cabbage (Lysichiton, americanum), spiraea (Spiraea douglasii) and salmonbeny (Rubus spectabilis). Communities identified in sample plots located in upland areas adjacent to wetlands were comprised of upland species such as orchardgrass (Dactylis glomerata), evergreen huckleberry (Vaccinium ovatum), sword fern (Polystichum munitum), red alder (Alnus rubra) and Himalayan blackberry (Rubus discolor). Such communities are not typically adapted to life in wetland conditions, however Himalayan blackberry is known to invade wetlands. Boundary Description Abrupt changes in soil characteristics were used as the primary rational for determining wetland boundaries. As there is very little change in landscape gradient along the wetland edge, numerous soil pits needed to be excavated to delineate the wetland boundary. Vegetation indicators extended beyond the wetland in most sample plots, likely due to the rhizomatous nature of the identified species (Carex obnupta). Jurisdictional Status The identified wetland scores less than 22-points on the field data form qualifying it as a jurisdictional Category III Wetland according to the Washington State Wetlands Rating System— Western Washington Second Edition and the wetlands chapter of the Mason County Resource Ordinance. Key factors influencing this rating include overall size (> 2,500 square feet), plant species diversity, structural diversity, number of wetland classes, habitat features, and condition of surrounding buffer. The presence of road crossings cause the wetland to be rated separately from wetlands located southwest of the Eckert/Stretch Island Road intersection. Category III wetlands require a vegetation area of 50 feet and a building setback of 65 feet according to the wetlands chapter of the Mason County Resource Ordinance. Special setbacks include 100 feet for a septic drainfield and 200 feet for a livestock feedlot. Recommended Vegetation Area Enhancement Upland areas adjacent to wetland zones are heavily impacted by the presence of invasive species and a history of disturbance associated with agricultural land use. The simple abandonment of the vineyard with the absence of a restoration plan has left a dense alder thicket with an understory of Himalayan and evergreen blackberries. Such understory species are stubborn competitors for light and nutrients and hinder riparian plant succession. Although there is no restoration currently required for this ownership, the following recommendations are provided to guide the landowners should they wish to pursue PO Box 2854,Belfafr,WA 98528 cell:360-620-0618,Office: 360-372-2421 e-mail:boad40@peoplepc.com Wetland Delineation Grapeview, Washington LBHMPWS132 Page 4 of 5 enhancement of the Wetland Vegetation Area. The following plan is intended to enhance species diversity and overall habitat value of the site. Native Plantings It is recommended that native plants be installed within the Wetland Vegetation Area to achieve the following densities: Trees- 10' on center Shrubs-4' on center Ferns-3' on center These densities have been selected to provide a moderately dense, structurally diverse plant community within the restoration area. Native plant species that should be used within the restoration zone include: Trees: western red cedar(Thuja plicala) Douglas fir(Pseudotsuga menziesii) Big leaf maple(Acer macrophyllum) Shrubs salmonbenry(Rubes spectabilis) Evergreen Huckelberry(Vaccinium ovatum) Salal (Gaultheria shallop) Oregon grape (Mahonia nervosa) Ferns: sword fern (Polystichum munitum) Groundcover: kinnikinnik (Arcostaphylus uva-ursi) Coastal strawberry(Fragaria chiloensis) All planting should occur during winter dormancy. The optimum time for planting is during February and March. Selective Thinning The dense nature of the alder thicket and the presence of the invasive species within the shrub layer limits potential for other native species to become established or survive if planted. It is recommended that 30%-40% of the alders be removed from the site to allow sunlight to penetrate the canopy. Such conditions would facilitate growth of supplemented plant species. Thinning should be limited to trees <5"diameter at breast height. Removal of Exotic Species Himalayan and evergreen blackberries should be continuously removed from the entire restoration zone until supplemented plants become well established. Herbicides should not be used to achieve this due to the proximity of the wetland. Three cuttings during the growing season is usually sufficient to offset the rhizomes of targeted species. PO Box 2854,Belfair,WA 98528 cell_360-620-0618,Office:360-372-2421 e-mail:boad40@peoplepc.com Wetland Delineation Grapeview, Washington LBHMPWS132 Page 5 of 5 All areas targeted for exotic species removal or selective thinning should include the native plant restoration program described above to insure long-term prevention of exotics. 4.0 Conclusion Wetland delineation has been completed applying a standardized methodology required by the Mason County Resource Ordinance. The identified wetland upholds positive wetland indicators and meets the rating criteria for a Category III Wetland in Mason County. A Vegetation Restoration Plan is included to guide any voluntary restoration efforts. No other area within the study site supports positive indicators of wetland conditions. A scaled map is attached showing the location of the wetland in relation to the property boundaries. I trust this information is sufficient for your needs at this time. Thank you for choosing me as your environmental consultant. If you have any questions feel free to call. 4eeBo;�a_d Lee Boad Habitat Management Planning and Wetland Services PO Box 2854 Belfair, WA 98528 360-620-0618 Attached: Appendix 1: Plot Map Appendix 2: National Wetlands Inventory Data Appendix 3: Wetland Determination Data PO Box 2854,Belfair,WA 98528 cell:360-620-0618,Office:360-372-2421 e-mail:boad4o@peoplepc.com Lee l3oad Habitat Maragemerr Plarrwq and Wetland Services Client: non and fammie Zech Project: 53l LCkert U PO Pox 432 6rapeview, WA 98546 Grapem-w, WA 98546 Parcel #:12108-15-00060 i SIM I 50' Nffer 1 � Catega�{III Wetland 11 `�- ` DuYd gSSrtbac{; I Eckert road Appendix B USFWS NWI DATA n f Site Location s t y r,- P SSC Palustnne Scrub Shrub Wetland Approximate Property Boundary Lee Bond Habitat Management Planning and Wetland Services PO Box 2854 Belfair,WA 98528 360-620-0618