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Home My WebLink AboutLevel I Wetland Assessment 901353007 .", t4l'.08 --3h:8 Olympic Wetland Reso....rces, Inc.. Dixie Llewellin, Principal Biologist ~J ""', : -', ",:_>", ':::>,>'~-,~,' ,fi '-,,' '., ,,:-~,>::'J:'c:,_ "_'~ ';';_":/',- ...... ;_:';,c_) . I .' '~_COl\due~MA~ . , . . '.,' dete1d~e wetlaudeategorizationand potential buffer restrictkmpJ!ior t()bUildinga~, family residence. Jefferson COtmtyCritiCal Areas Map indicates wetlands across theeentra1 portion of this rectangular parcel. Fieldwork to detennine the actual wetland ootmdaries was condU<<?ted according to the methodology outlined in the Washington State Wetland Identification and Delineation Manual (Department of Ecology #96-94) and Jefferson County Unified Development Code (UDC) dated January 1,2001. Land use restrictions will apply to all future developments associated with this parcel. Description of Site · Legal Description: Parcel #901353007 Section 35 Township 29N Range lW · Location: Egg and I Ridge Road Chimacum, Washington (off of Egg and I Road, approximately 1 mile from Center Valley Road, Jefferson Cotmty) · Soils: Aud aDd Ale Alderwood gravelly loamy sand . Slopes: 0 to 30% slopes The 2.6 acre rectangular parcel (170' X 608') is open and consists ofapasture grasses with a few maples and firs near Egg and I Ridge Road. The site slopes to the east with an elevation variation of 80 feet from Egg and I Ridge Road to the valley floor. Adjacent parcels have single family homes; the neighbor to the south has excavated a pond that retains year-round water. RECEIVED AUG 2 5 2008 JEFflRSONCOUNlY DeD Levell Assessment De Dominick Report File Number 2008-0811 I Olympic Wetland Resources. Inc August 08 Findings Wetlands as shown on the Jefferson Critical Areas Map were not observed. The slope was completely dry with no wetland soils or wetland vegetation. At the base of the slope was a small area with wetland grasses and common rush. At this location the soils had hydric conditions (lOYR 3/2 with distinct mottles lOYR 5/4) but the soils were dry. Wetland hydrology is often absent at this time of year. This pocket wetland does not appear to have a distinct overland connection with the excavated pond on the neighboring parcel (approximately 150 feet away). Using the Department of Ecology Wetland Field Data Form this wetland rates as a low quality Category IV wetland (11 points). Ail Category IV wetlands receive protective buffers of 40 feet if the wetland is delineated and 60 feet if the wetland is not delineated (Tables 18.22.330(2) page 28 Wetland Categories for Moderate Impact Land Uses (over 1 acre). Enclosed is the Wetland Rating Form. Since this wetland was not delineated it will have 60 foot buffers. The edge of the wetland is approximately 400 feet from Egg and I Ridge Road. Wetland edges and associated buffers, as observed during this Level I Assessment are well outside the proposed building envelope as shown in the site plan developed by Terhune Custom Homes (7/22/08). The homesite and septic are within the upper portions the slope and are approximately 180 feet from the wetland edge. Final authority over wetland determinations and associated buffers rests with Jefferson County Department of Community Development. If this project requires a formal. delineation or if you have further planning needs please don't hesitate to call. R1ECEIVED Sincerely, AUG 2 5 2008 JHHASON COUNTY DCD Dixie Uewellin Principal Biologist, Olympic Wetland ResoW'Ces, Inc. Certified for Wetland Delineation, 1987 Manual. Wetland Training Institute, June 1995. Certified for Wetland Rating DOE, 2007 Levell Assessment De DominiCk Report File Number 2008-0811 2 Olympic Wetland Resources, Ioe August 08 Wetland Rating Form-Western Washington Name of Wetland (if known): Parcel #901 353 007 Location: Section:35 Township:29N Name of Rater: Dixie UeweUin Cate 0 based on Functions provided by wetland Category I = Score > 70 Category n= Score 51-69 Category 11I= Score 30-50 Category IV = Score <30 Range:1W Affiliation: OlymDi~ W~tland Resources. Inc. Date of Site Visit: August 11 , 2008 Score for Water Quality Functions Score for Water HydrotogicFunctions Score for Habitat Functions Total Score For Functions Category based on SPECIAL CHARACTERISTICS of wetland L___IL___Doesnot apply X ____ Final Cate 0 choose the "hi hest" cateory from above Estuarine Natural Heritage Wetland Bog Mature Forest Old Growth Forest Coastal Lagoon lnterdunal None of the Above X Depressional Riverine Lake-Fringe Slope Flats Freshwater Tidal RECEIVED AUG 2 5 2008 Jrrr"p("'.';".,!1 rOUNTY.orn Lt." \.10 LU 4 1 6 1 1 H2.Does the wetland.havethe opportunity to provide habitat for many species? H2.1 Buffers Choose the description that best represents condition of buffer. of wetland unit. The highest scoring criteria that applies to the wetland Is to be used in the rating. POINTS 100m (330') .of relative undisturbed vegetated areas, rackyareas, .or .open water >95% .of circumference. 5 Relatively undisturbed means na-grazing, na landsCaping, na daily human use. 100m (330') .of relative undisturbed vegetated areas, racky areas, .or .open water> 50% .of circumference. 4 50m (170') .of relative undisturbed vegetated areas, racky areas, .or .open water >95%.of circumference. 4 100m (330') .of relative undisturbed vegetated areas, racky areas, .or .open water> 25% .of circumference. 3 50m (170') .of relative undisturbed vegetated areas, racky areas, .or .open water> SO% .of circumference. 3 If buffer does not meet any of the criteria above Na paved areas (except trails) .or buildings within 25 m (80') .of wetland >95% circumference. 2 Napaved areas .or buildi!"gs within 50m (80') .of wetland >50% circumference. 2 2 Heavy grazing in buffer 1 Vegetated buffers are < 2M wide (6.6 ft) for more than 95% .of the circumference 0 Buffer does nat meet any .of the abave criteria 1 H2.2.1 is the wetland part of a relatively undisturbed and unbroken vegetated corridor (riparian/upland) that Is at least 1 50 ft wide, has at least 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries, or other wetlands or undisturbed uplands that are at least 250 acres in size? YES = 4 points (go to H2.3) NO = go to (H2.2.2) H2.2.2 is the wetland part of a relatively undisturbed and unbroken vegetated corridor (riparian/upland) that is at least 50 ft wide, has at least 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries,. other wetlands or undisturbed uplands that are at least 2,5 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 H2.3) NO = go to (H2.2.3) H2.2.3 Is the wetland: Within 5 miles (8km) of a brackish or salt water estuary OR within 3 miles ofa large field or pasture (>40 acres) OR within 1 mile of a lake greater that 20 acres? YES = 1 point NO-O ints 0 H2.3 Near or adjacent to other Drioriw habitats Ii~tesl bvWDFW Which of the following priority habitats are within 330 feet (100m) ofthe wetland POINTS Riparian Talus Aspen Stands Caves 3 or mere habitats 4 Cliffs Oregon white oak 2 priority habitats 3 Old-grewth forests Urban natural open space 1 priority habitat 1 Mature ferests (SO-200yrs old) Estuary/Estuary-like Prairies Marine Estuarine sherelines 0 H2.4 Wetland LandsC8De Choose the one description of the landscape around the wetland that best fits POINTS There are at least 3, other wetland within 1/2 mile, and the cC)nnectiens between then are relatively undisturbed ( light grazing OK, but shauld NOT be bisected by paved r.oads, fill, fields, develapment) 5 The wetland Is lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlands within 1/2 mile 5 There are at least 3 wetland within 1/2 mile, BUT the connections between then are disturbed 3 3 The wetland is lake-fringe on a lake with disturbance and there are 3 other lake-fringe wetlands within 1/2 mile' 3 There is at least 1 wetland within 1/2 mile RE C E. IV E. 2 There are ne wetland within 1/2 mile 0 Total for H2. Opportunity for providing Habitat Total Score for Habitat Functions Add points for Hl and H2 and record on Page 1 . 5 AUG 2 5 2W points in .above boxes[!) JffffRSON COUg 61 Habitat Functions- Indicators that the unit functions to provide important habitat Hl.1Does the wetland unit have the gotential to provide habitat for many species? H1.1 Vegetation Structure ~~:~~st~~:':~~ ~r":.:;~a::~ ~':S~::~:~~:~ ~~Su~~:ii~e:m~'~:;~:~; :~~:s~hresholdforeaf{ECEI' ED Aquatic Bed Emergent plants Scrub/Shrub (areas where shrubs have >30% cover) Forested (areas where trees have >30% cover) tf THE UNIT HAS A fORESTED CLASS CHECK 'F:JEffEl~ICDDft JY B V Forested areas has 3 out of 5 strata (canopy, sub-canopy,shrubs, herbaceous, moss/ground cover) that each cover 20% within the forested polygon Addth,enumber of vegetation types that qualify. If you have x "US 25 2 08 4 Types 3 Types 2Types 1 Type POINTS 4 2 1 o o H1.! Hvdrooeriods Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or 1/4 acres to count. POINTS 4 or more types present 3 Perm~nently flooded or inundated 3 types present 2 Seasonally flooded or inundated 2 types present 1 X Occasionally flooded or inundated Lake fringe wetland 2 Saturated only freshwater tidal wetland 2 Permanently flowing stream or river in, or adjacent to, the wetland Seasonally flowing stream in, or adjacent to, the wetland 1 type 0 0 H 1.3 Richness of Plant SDecies POINTS Count the number of plant species in the wetland that cover at least 10 ft2. Do not include reed canarygrass, purple loosestrife, Canadian thistle > 19 2 5 to 19 1 <5 0 0 H1.4 IntersDersiof) of habitats, Interspersion of habitats between vegetation, or the classes and unvegetated areas, is high, medium,loW, or none. High= 3 points Moderate=2 points Low= 1 point None=O points 1 H1.S Soecial Habitat Features Check the habitat features that are present In the wetland, the number of checks Is the number of points you put in the next column. Large, downed woody debris within the wetland (4" diameter and 6,'long) Standing snags (diamt!t~r .~t the bottom >4") in the wetland Undercut banks are present for at least 6.6 ft and/or overhanging vegetation extends 3.3 ft for 33 ft Stable steep banks of fine material that might be used by beaver or muskrat At least 1/4 acre of thin-stemmed persistent vegetation or woody branches In'areas,that are seasonally or permanently inundated (structure for egg-laying amphibians). Invasive plants cover less than 2596 of the wetland area In each stratum of plants ..' Total for H1. Potential for providing Habitat Add the points in the boxes above 1 DD I dFltWtl d epresslona an a 5 e an 5 HYDROLOGIC FUNCTIONS,Indicators that wetland function to reduce flooding D3. Does the wetland have the . I to reduce floodinG and erosion? POINTS D3.1 Characteristics of surface water out of the wetland unit Unit is a depression with no surface water leaving (no outlet) 4 , Unit has an intermittently flowing, OR highly constricted permanently flowing outlet 2 Unit is a "flat" depression and has no obvious outlet and/or is a smallman-made ditch 1 1 Unit has an unconstricted, OR slightly constricted, surface outlet surfac~outlet 0 D3.2 Depth of storage during wet periods Estimate height of ponding above the bottom of outlet Marks of ponding are 3ft or more above the surface or bottom of outlet 7 The wetland is a "headwater wetland" S Marks of ponding between 2 ft to < 3ft from the surface 5 Marks are at least 0.5ft to < 2 .ft from surface or bottom of outlet 3 Wetland is flat but has small depressions on the surface that trap water 1 Marks ofponding less than 0.5 ft 0 0 D3.3 Contribution of wetland to storage in the water shed Estimate the ration of the area of 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 the unit 5 The area of the basin is1 0 to 100 times the area of the unit 3 The area of the basin is more than 100 times the area of the unit 0 0 Entire unit is in the FLATS class (basin-the unit, by definition) 5 Total for D3 Add the .points in the boxes above 1 04. Does the wetland have the ODDortunitv to reduce flooding and erosion? Answer Yes if the wetland is in a location in the watershed where flood storage, or reduction in the 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 a flood gate, tide gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater. 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 water that might otherwise flow into a river or stream that has flooding problems _Other YES multiplier is 2 NO multiplier is 1 Total -Hydrologic Function Multiply and SCorefromJlJ~ei\YJC, I Add score to table on paQ'!~'--' , l.C D Multiplier 1 1 AUG 2 5 2008 JEFFERSON COUNTY DCn DD " I d FI t w tl d epresslona an a 5 e an 5 Water Quality Functions-Indicators that wetland functions to .improvewater qUe POINTS Dl. Does the wetland unit have the .~ .~ial to improve water quality? Dl.l Characteristics of surface water flows out ofthe wetland: . Unit is a depression with no surface water leaving (no outlet) 3 Unit has an intermittently flowing, Or slightly constricted permanently flowing outlet 2 Unit has an unconstricted, or slightly constricted, surface outlet (permanently flowing) 1 Unit is a flat depression and has no obvious outlet andlor outlet is a ditch 1 1 01.2 The Soil 2" below the surface is clay, organic, or smells anoxic. YES 4 NO 0 0 D1.3Characteristics of persistent vegetation (Cowardin Class,emergent, shrub, and lor forest class): Wetland has persistent, ungrazed, vegetation> ==95" of area 5 Wetland "as persistent, ungrazed, vegetation>==1/2 of area 3 Wetland has persistent, ungrazed, vegetation> == 1/1 0 of area 1 1 Wetlanc:thas.persistent. unarazed. vegetation< 111 0 of area 0 01.4 Characteristics of seasonal ponding or inundation. This is the area of the unit that is ponded for at least 2 months, but dries out sometime during the year. Do not count the area that is permanently ponded. Estimate area as the average condition five out of ten years. Area seasonally ponded is > 1/2 total area of wetland 4 Area seasonally ponded is > 1/4 total area of wetland 2 Area seasonally ponded is < 1/4 total area of wetland 0 0 Total for Dl Add the points in the boxes above 2 D2.Does the wetland have the oDDortunitv to improve water quality Answer YES if you know to believe there are pollutants in groundwater of 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. __Grazing in the wetland within 1 50' __Untreated stormwater discharges to wetland _Tilled fields or orchards within 150' of wetland XJ\ stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear cuts Nursery nearby _Residential, urban areas, golf courses are within 1 50' of wetland ----:Wetland is fed by groundwater high in phosphorus or nitrogen Multiplier _Other YES multiplier is 2NO multiplier is 1 2 Total -Water Quality Function Multiply and score from Dl byD2 Add score to table on page 1 4 RECEIVED AUG 2 5 ZOGS JfffEw':m f0m!1l! aCD