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Home My WebLink AboutWetland Delineation 995600015 fii..l.-.. ff', . '# i)IV\Q R~n:.t.. =!) {,l,iUU Bob Harrington Wetland Delineation Report Parcel # 995.600.015 November 2003 Prepared for: Bob Harrington 6761 38th Ave SW Seattle, W A 98126 II Ii Iii II 85650th Street Port Townsend, Washington 98368 360 385-6432 dixie@cablespeed.com Bob Harrington Wetland Delineation Report Parcel # 995-600-015 November 2003 Contents Introduction Description of Site Applied Methodology Washington State Wetland IdentifICation and Delineation Manual Soils Vegetation Hydrology ClassifICation Determining Wetland Edges Findings Soils Vegetation Hydrology ClassifICation Summary References Appendix Sheet #1 Location Map and Soil Survey Of Jefferson County Of Washington Sheet #2 Findings Map Wetlands Rating Field Data Form Data Forms, Routine Determination W A State Wetland Delineation Manual Bob Harrington Wetland Delineation Report Parcel # 995-600-015 November 2003 Introduction At the request of Bob Harrington a wetland delineation was conducted on November 20, 2003. The subject parcel is adjacent to the Golf Course and east of Argyle Lane. in Port Ludlow. Washington. The lot owned by Bob Harrington has been previously mapped within wetland boundaries. according to the Jefferson County Critical Areas Maps. The goal of the wetland delineation was to determine wetland locations, wetland classifications, and associated restrictive buffers that would restrict a building envelope. This site was evaluated during a Level I Wetland Assessment on July 15. 2003 for a potential buyer, All wetlands within Jefferson County are subject to requirements outlined in the 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 #995-600-015 Lot 15 S21. T28, Rlf WM . Location: East of Argyle Lane. off Cameron Drive. Port Ludlow. Wash. (Appendix Sheet # 1: Location Map) . Soils: Ale Alderwood gravelly sandy loam, and OlD Olete-Alderwood complex. and Bk Belfast Silt Loam. Wet Variant (Appendix Sheet # 1: Soil map) . Slopes: 0 to 15% slopes The subject parcel is west of the 7th hole on the Port Ludlow Gold Course. The relatively flat l,ot is forested with large alders. hemlock. and spruce with a dense understory of shrubs and ferns. A small stream approximately defines the northern boundary of the lot. The stream has been channeled under the golf course and to the site, It is described as a drainage easement on the parcel map. The subject parcel. Lot 15. is within a residential neighborhood: there are houses on the lots to the south (Lot 16) and across the Argyle Lane. Lot 14 is not developed. Harrington Wetland Delineation Report File Number 2003-024.64 Olympic Wetland Resources. Inc. 11 03 Applied Methodology The following resources were consulted for this project: . Jefferson Coooty Critical Areas Map Wetlands (1995) Sheet #3, included in Appendix . Jefferson Coooty Unified Development Code (January 1, 2001) . Soil Survey of Jefferson Coooty (D,S. Soil Conservation Service 1975) . Washington State Wetland Identification and Delineation Manual . National List of Plant Species That Occur in Wetlands: Northwest (Region 9) Washington State Wetland Identification and Delineation Manual Fieldwork to determine the actual wetland booodaries was conducted according to the methodology outlined in the Washington State Wetland Identification and Delineation Manual (Department of Ecology #96-94). Chapter 173-22 of the Washington Administrative Code requires that all wetlands within the State of Washington be delineated using this manual. The methodology outlined in the Washington State Wetland Identification and Delineation Manual requires examination of the three parameters for a positive wetland determination: hydric soils, hydrophytic vegetation. and hydrology. For an area to qualify as a jurisdictional wetland it must have a positive indicator from all three parameters, All wetlands identified using this methodology may be federally regulated. regardless of size. Soils A hydric soil is a soil that forms under conditions of saturation. flooding, or ponding lasting long enough during the growing season to result in an anaerobic upper layer. Hydric soils favor the growth and regeneration ofhydrophytic vegetation. The indicators for this type of soil include low chroma. mottles. gleying, and high organic content within the upper 32 inches of the soil profile. Holes were dug on the site and soil colors (including value and chroma) were recorded in the top 16 inches. Soil colors were analyzed using the Munsell Color Charts (1992). Vegetation Wetland plant species must constitute greater than 51 % of the total vegetation present to meet the qualification as a site dominated by hydrophytic vegetation. Dominance of plant species is determined by calculating actual aerial cover within a 30-foot radius for trees. a 100foot radius for shrubs. and a 6-foot radius for the herbaceous layer at each data point, Commonly occurring plant species have been rated by the United States Fish and Wildlife Service (USFW) National List of Plant Species That Occur in Wetlands: Northwest (Region 9) as to their frequency of occurrence in wetlands and non-wetlands. During the Harrington Wetland Delineation Repon File Number 2003-0246-+ .., Olympic Wetland Resources. Inc. 11 03 fieldwork. each species was recorded and given a rating based on indicator status and percent cover, Hydrology Wetland hydrology is defined in the Washington State Wetland Identification and Delineation Manual as ""areas that are periodically inundated or have soils saturated to the surface at some time during the growing season. - Areas must have seasonally inundated or saturated soil at least 12,5% of the growing season. Indicators of hydrology include visual observation of inundation or soil saturation. water-stained leaves. cracking of the soil surface. and/or sediment deposits. Positive signs of hydrology are often absent during the summer and fall months but can be inferred if there are positive indicators of hydric soil and hydrophytic vegetation. Classification Wetland categorization was determined using the Washington State Department of Ecology (DOE) Wetland Rating System (publication #93-74. August 1993). which assigns a numerical value to any given wetland according to wetland size. quality of surrounding buffers, vegetation diversity, wetland types. and habitat value, Wetlands are rated as entire systems and quite often exceed project boundaries ratings. which range from Class I to Class IV, Class I is the highest quality wetland and is not replaceable, Class L II. III and IV wetlands receive protective buffers of 150', 100', 50', and 25'. respectively, Determining WetIand Edges Wetland edges were determined by establishing two data points: one within the wetland which contained positive indicators of all three of the wetland requirements: soils. hydrology, and vegetation. and another data point outside the wetland. where one or all of the requirements were not present, Measurements were taken with a Chainman IT hip chain from an existing southeastern comer post marker. Findings The Jefferson County Wetland Map indicates that the entire parcel is within a wetland. The wetland delineation reveals wetland/upland edge to be defined by a distinct drop in elevation (2-3 foot drop) and associated with a perennial stream. This wetland edge runs nearly parallel to most of the northern property boundary. The majority of the subject parcel is outside the delineated wetland since there was not a dominance of wetland vegetation, presence of hydrology, or wetland soils identified, However. Lot 15 will have restrictions from the associated buffers of the stream and wetland. Hanington Wetland Delineation Repon File Number 2003-0246-+ .., .J Ol~mpic Wetland Resources. Inc. 11 03 The rating for this wetland is 22 points; a Class II wetland with 100- foot buffers. The entire lot falls entirely within wetland buffers therefore future building projects could . . reqUITe a vanance. The wetland was flagged with pink plastic ribbon labeled "Wetland BOlmdary," tied at intervals of approximately 20 feet apart along the wetland edge. The wetland edge is contiguous with the drop in topography and distinct vegetation change, Flagging is labeled with alphanumeric codes (AI through A 7), The data point locations, wetland edges. and buffers are indicated on the Findings Map in the Appendix (Sheet #2). Soils Jefferson County Soil Survey (page 55) lists soils on site as Ale Alderwood gravelly sandy loam, OlD Olete-Alderwood gravelly sandy loam, and Bk Belfast silt loam. wet variant. Belfast is classified as a hydric soil on the Jefferson County Area Hydric Soil list (January 1991), Data point # 1 was dug slightly upslope from the stream, Soils did not indicate regular inundation; soil colors were dark brown (lOYR 3/3. no mottles). At Data Point ;;'2. closer to the stream and north west of Data Point #1, soils were much darker in hue and had streaked mottles indicating the presence of a regular and rising water table ( 10YR 4/3 and 10NR 3/2 with mottles), The soils at this location were very sandy as opposed to the loamy and powdery soils found in the upland areas. Several other soil test pits were dug on the parcel, especially in the western boundary where the understory appeared to contain more wetland tolerant vegetation (salmonberry), Soils only showed signs of regular standing water near the stream. Vegetation The plant community along the stream channel (northern edge of the parcel) contains well over 80% wetland-tolerant vegetation, Species diversity is very high on the parcel and several of the alders within the wetland are very large. measuring up to 8,)" DBH. The majority of the vegetation consists of native species. Vegetation that requires regular inundation was identified on the western boundary along Argyle Lane consisting of horsetail and water parsley, These species were mostly confined to the outlet of the stream and along the ditch. The majority of Lot 15 consists of water tolerant trees (Facultative) including cedar. spruce. and alder. but the understory vegetation is not tolerant to the presence of standing water. Species in the understory consist mostly of fems, Oregon grape, elderberry. and thimbleberry, Harrington Wetland Delineation Repon File Number 2003-02-+64 4 Olympic Wetland Resources. Inc. 11 03 Below is the list of vegetation identified on the subject parcel. including the assigned indicator status for each species. Common Name Status Layer Scientific Name Wetland Plants L4eer eireinalUm i L4lnus rubra L4tJnTium filix-femina lclal'tonia laneeolaJa var.lane isetum arvense L\1aianrhemum dilaJaJum t iOenanrhe sarmentosa iPieea sitehensis [Rhamnus purshiana [Rubus speerabilis iTolmiea men::eisii Thu'a lieara Uritiea dioiea iYine maple IAlder tLady fem iSpringbeaury IC ommon horsetail IF alse lily of the valley !Water-parsley ISitka spruce ICascara :Salmonberry lPig~-back lam , iWestern red cedar lStinging nettle Upland Plants l4eer macrophl'ilum [Berberis nervosia ~ol\'stiehum munitum [Rubus pan'iflorus , bus ursinus mbucus raeemosa Trillium ovarum I ITsuga heteropJn.Ua i J "aeeinium pan'ifolium lBig-leaf maple [Dull Oregon grape :Sword fem Thimbleberry IT railinQ blackberrv IElderbem' IT rillium IHemlock iRed huckleberry FAC- Shrub FAC Tree FAC Herb FAC- Herb FAC Herb FAC Herb OBL Herb FAC Tree FAC- Tree FAC- Shrub FAC Herb FAC Tree FAC- Herb Tree Tree Shrub Hydrology Water needs to be present only 20 days of the growing season for an area to qualify as a wetland. The growing season is defmed by the Jefferson County soil survey as March 12 to November 25. Hydrology must be present for 12,5% (20 days) of these 258 days. The growing season is also defined by soil temperature at 19.7 inches below the soil surface being higher than biological 0 (50C or 40F), The temperature of the soil during the November 18 delineation was 47.5 degrees and therefore verifies that the delineation is during growing season. Hydrology was present in the soil test pit near the stream (Data Point ~2). The stream ranges from 2 to 3 feet wide and approximately 5 inches deep. It appears to flow year- Harrington Wetland Delineation Repon File Number 2003-02--+64 5 Ol~mpic Wetland Resources. Inc. II 03 round. During the initial assessment of this parcel in July 2003 water was flowing in the stream. This was during an exceptionally dry year following 3 years of below normal rainfall. The stream eventually flows to an open ditch along Argyle Lane. and under Cameron Street via a culvert. Classification of Wetlands This wetland has been rated according to the DOE rating system and classifies as a Class II (22 points) wetland with 100-foot buffers. The wetland is small. less than 1 acre. but has high structural diversity (dense tree, shrub. and herbaceous layers). and high plant diversity in all layers, However. existing buffers are altered in by nearby developments. roads, and the adjacent golf courses. All buffers are measured perpendicular from the delineated edge (Jefferson County Unified Development Code. Jan. L 2001, 3-30 Buffers Table 3-4), The majority of the wetland falls outside the subject parcel. however associated buffers restrict any development projects on this parcel. Summary This report presents findings from the wetland delineation conducted November 18. 2003, on parcel #995-600-015 (Lot 15) west of the 7m hole at Port Ludlow Golf Course. The Jefferson County Critical Areas Map indicates that the entire parcel is within a wetland. Findings reveal a small. Class II wetland with and associated year-round stream located on the northern boundary of the lot, The majority of the wetland is off-site and to the north (Lot 14) but the 100- foot buffers associated with this Class II wetland will restrict development projects associated with this parcel. The final authority over this wetland determination rests with the governmental agencies: restriction will apply to any development near the wetlands or buffers associated with this parcel. A variance will be required to develop this parcel. If there are further questions or planning requirements for this project please do not hesitate to call. Dixie Llewellin Principal Biologist. Olympic Wetland Resources. Inc. Certified for Wetland Delineation. 1987 Manual. W etland Training Institute. June 1995. Hanington Wetland Delineation Report File Nwnber 2003-02-+64 6 Olympic Wetland Resources. Inc. 11 03 References Buckingham, et a1., 1995. Flora ofthe Olympic Peninsula. Northwest Interpretive Association and the Washington Native Plant Society. Seattle. Wash. Cooke. Sarah Spear, 1997. A Field Guide to the Common Wetland Plants of Western Washington and Northwest Oregon. Seattle Audubon Society, Seattle. Wash. Cowardin.. L.M.V. Carter, F.C.Gob1et, and E.T. LaRoe, 1979. Classification of Wetland and Deep Water Habitats ofthe U.S, U. S, Fish and Wildlife Service, Washington. D.C. Hitchcock and Conquest, 1973. Flora of the Pacific Northwest. Federal Interagency Committee for Wetland Delineation. 1987. Federal Manual for Identifying and Delineating Jurisdictional Wetlands. July 1994 update. V,S. Army Corps of Engineers, U.S, Environmental Protection Agency. U.S. Fish and Wildlife Service. and U.S,D,A, Soil Conservation Service. Jefferson County Unified Development Code, January 2001. Leonard. William p" 1993, Amphibians of Washington and Oregon. Seattle Audubon Series. MacBeth. Div. of Kollmorgen Instruments Corp.. 1992. Munsell Soil Color Charts. Mitsch and Gosse1ink 1993, Wetlands. Pojar. Mackinnon. 1994. Plants of the Pacific Northwest Coast. Reed. Porter. 1988. National List of Plant Species That Occur in Wetlands, Region 9. 1993 update. Washington State Wetland Department of Ecology. March 1997. Washington State Wetland Identification and Delineation Manual. #96-94. U.S. Department of Agriculture. 1994. Keys to Soil Taxonomy. Pocahontas Press. U.S. Department of Agriculture, Soil Conservation Service. 1975. Soil Survey of Jefferson County. Appendix Sheet # 1 Sheet #2 Location Map and Soil Survey Of Jefferson County, Washington Findings Map Wetlands Rating Field Data Form Data Forms, Routine Determination W A State Wetland Delineation Manual Appendix Sheet # 1 Sheet #2 Location Map and Soil Survey Of Jefferson County, Washington Findings Map Wetlands Rating Field Data Form Data Forms, Routine Determination W A State Wetland Delineation Manual ,:~~ ~f~j1 Olympic We~ond Resources, Ine. ~Jr 856 50th Street Port Townsend, WA 98368 360 385-6432 frtle: Location and Soil Map Parcel #995-600-015 Srole: Sheet November 2003 #1 Bob Harrington 6761 38th Ave SW Seattle, WA 98126 Chent: TNt !.MN V 19" Jefferson Counly Soil Survey Map Jefferson Counly, Washington 1975 Soil Survey Page 55 AIC Alderwood gravelly loamy sand 010 Olefe-Alderwood complex Ok Belfast Silt Loam, Wet Variant Job #: 2003-02464 Subject Property ~}~~'i~i,~' ,'>' rille: .ff . ~ -\11/ Olympic Werlond Resources, Inc ~,~I Findings Map Parcel #995-600-015 Salle: Sheet As Indicated 856 50th Street Port Townsend, WA 98368 Chent: 360 385-6432 !! ..g I ~ Q) .2- B C o (D E- o u Lot 1 6 ~ fl f t. . November 2003 #2 Bob Harrington 6761 38th Ave SW Seattle, WA 98126 Job #: 2003-02464 Lot 14 \IV \IV ~ ~ \IV -----~-------~-~-- ~ \IV \IV ~ _~g~Z4~___~-~------~ Delineated Wetland Edge Lot 1 5 100' Buffe 194 Delineated Wetland Edge ..,.'., ,.~.,~c~cu,.~c~~ 100' Buffer From Wetland Edge o Flagged delineation markers . Data Points All wetland locations and sizes are approximate, to establish exact points a formal survey is required -;--;? Wetlands Rating Field Data Form Background Information: Name of Rater: .D. LLBNEllJ N , OLympIC ~ Affiliation: WelfW1? H..F?)llJLil;5Date: II u) It)") I It) 50Ultt DA\ I Wil1 LUOL.l;\\ J Name of wetland (if known): Lf')T Government Jurisdiction of wetland: ~TI~ Cl:U\.i1'11 QOruJ S o=- &t~( ~ Location: 1/4 Section: of 1/4 S: Section: 2.-f Township: 2>? Range: Ie IJ.I0\.. Sources of Information: (Check all sources that apply) Site visit: ~ USGS Topo Map: ><. NWI map: L Aerial Photo: ~ Soils survey: ~ Other:.::i::. Describe: -:J1=-~w-- Co urnc/tL Ai2.13t3 fJJ!tP When The Field Data form is complete enter Category here: ~ ~ f'D~" T.:5 Q.1. High Quality Natural Wetland Circle Answers Answer this question if you have adequate information or experience to do so, If not find someone with the expertise to answer the questions. Then, if the answer to questions la, lb and lc are all NO, contact the Natural Heritage program of DNR, 1a. Human caused disturbances. Is there significant evidence of human-caused changes to topography or hydrology of the wetland as indicated by any of the following conditions? Consider only changes that may have taken place in the last 5 decades. The impacts of changes done earlier have probably been stabilized and the wetland ecosystem will be close to reaching some new equilibrium that may represent a high quality wetland. lal. Upstream watershed> 12% impervious, la2. Wetland is ditched and water flow is not obstructed. la3. Wetland has been' graded, filled, logged. la4. Water in wetland is controlled by dikes, weirs, etc. laS. Wetland is grazed. la6. Other indicators of disturbance (list below) ('iD( ,r (DI}12;.& ~ N8Gj rxx>,1.:tf;eo 1U> US6 ~go to Q.2 ~: go to Q,2 Yes: go to Q.2 Yes: go to Q.2 Yes: go to Q,2 Yes: go to Q.2 No: go to lb. ,. 25 lb Are there populations of non-native plants which are currently present, cover more than 10% of the wetland, and appear to be invading native populations? Briefly describe any non-native plant populations and Information source(s): lc. Is there evidence of human-caused disturbances which have visibly degraded water quality, Evidence of the degradation of water quality include: direct (untreated) runoff from roads or parking lots; presence, or historic evidence, of waste dumps; oily sheens; the smell of organic chemicals; or lifestock use, Briefly describe: Q.2. Irreplaceable Ecological Functions: Does the wetland: EJ) have at least 1/4 acre of organic soils deeper than 16 inches and the wetland is relatively undisturbed; OR [lIf the answer is NO because the wetland is disturbed briefly describe: Indicators of disturbance may include: - Wetland has been graded, filled, logged; - Organic soils on the surface are dried-out for more than half of the year; - Wetland receives direct stormwater runoff from urban or agricultural areas.]; OR e have a forested class greater than 1 acre; OR e have characteristics of an estuarine system; OR EJ) have eel grass, floating or non-floating kelp beds? 2a. Bogs and Fens Are any of the three following conditions met for the area of organic soil? 2a.l, Are Sphagnum mosses a common ground cover (> 3q%) and the cover of invasive species (see Table 3) is less than 1O%? Is the area of sphagnum mosses and deep organic soils> 1/2 acre? Is the area of sphagnum mosses and deep organic soils 1/4-1/2 acre? 2a.2, Is there an area of organic soil which has an emergent class with at least one species from Table 2, and cover of invasive species is < 10% (see Table 3): Is the area of herbaceous plants and deep organic soils> 1/2 acre? Is the area of herbaceous plants and deep organic soils 1/4-1/2 acre? 26 YEs: go to Q.2 No: go to lc, YEs: go to Q.2 NO: Possible Cat I contact DNR @Q)o all: go to Q.3) YES go to 2a YEs: Go to 2b YES: Go to 2c YEs: Go to 2d YES: Category I YES: Category II NO: Go to 2a.3 YEs: Category I YES: Category II NO: Go to 2a.3 2a3. Is the vegetation a mixture of only herbaceous plants and Sphagnum mosses with no scrub/shrub or forested classes? Is the area of herbaceous plants, Sphagnum, and deep organic soils> 1/2 acre? Is the area of herbaceous plants, Sphagnum, and deep organic soils 114-1/2 acre? Q.2b. Mature forested wetland. 2b,l. Does 50% of the cover of upper forest canopy consist of evergreen trees older than 80 years or deciduous trees older than 50 years? Note: The size of trees is often not a measure of age, and size cannot be used as a surrogate for age (see guidance). 2b.2. Does 50% of the cover of forest canopy consist of evergreen trees older than 50 years, AND is the structural diversity of the forest high as characterized by an additional layer of trees 20'-49' tall, shrubs 6' - 20', tall, and a herbaceous groundcover? 2b,3, Does < 25% of the areal cover in the herbaceous/groundcover or the shrub layer consist of invasive/exotic plant species from the list on p. 19? Q.2c. Estuarine wetlands. 2cI. Is the wetland listed as National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park, or Educational, Environmental or Scientific Reserves designated under WAC 332-30-151?.... 2c.2, Is the wetland> 5 acres; , . . . . , , , . , . . . . , . , . ,. .,...,., Note: If an area contains patches of salt tolerant vegetation that are 1) less than 600 feet apart and that are separated by mudflats that go dry on a Mean Low Tide, or 2) separated by tidal channels that are less than 100 feet wide; all the vegetated areas are to be considered together in calculating the wetland area. or is the wetland 1-5 acres; . , . , . . . , . . . , , . , , . . , . , . or is the wetland < 1 acre? . . . , . , . . . , . , . . . , . , , . , . YES: Category I YES: Category n NO: Go to Q,3, YES: Category I NO: Go to 2b.2 YES: Go to 2b.3 . NO: Go to Q.3 YES: Category I NO: Go to Q.3 YES: Category I NO: Go to 2c.2 YES: Category I YES: Go to 2c3 YES: Go to 2cA 27 2c.3. Does the wetland meet at least 3 of the following 4 criteria: ., ".... YES: Category I NO: Category II _ minimum existing evidence of human related disturbance such as diking, ditching, filling, cultivation, grazing or the presence of non- native plant species (see guidance for definition); _ surface water connection with tidal saltwater or tidal freshwater; _ at least 75% of the wetland has a 100' buffer of un grazed pasture, open water, shrub or forest; _ has at least 3 of the following features: low marsh; high marsh; tidal channels; lagoon(s);woody debris; or contiguoUS freshwater wetland 2cA. Does the wetland meet all of the four criteria under 2c3. (above)?. YES: Category II NO: Category III Q.2d. Eel Grass and Kelp Beds. 2d.1. Are eel grass beds present? , . . , . . , , , . . , . , , . . ,. .............. YES: Category I NO: go to 2d.2 2d.2. Are there floating or non-floating kelp bed(s) present with greater than YES: Category I 50% macro algal cover in the month of August or September? , . .' ..... NO: Category II Q.3. Category IV wetlands. 3a. Is the wetland: less than 1 acre and, hydrologically isolated and, comprised of one vegetated class that is dominated (> 80% areal cover) YES: Category IV by one species from Table 3 (page 19) or Table 4 (page 20) NO: go to 3b 3b, Is the wetland: less than two acres and, hydrologically isolated, . with one vegetated class, and> 90% of areal cover is any combination of YES: Category IV species from Table 3 (page 19) NO: go to 3c 3c. Is the wetland excavated from upland and a pond smaller than 1 acre YES: Category IV without a surface water connection to streams, lakes, rivers, or other NO: go to QA wetland, and has < 0,1 acre of vegetation, 28 Q.4. Significant habitat value. Answer all questions and enter data requested. 4a. Total wetland area Estimate area, select from choices in the near-right column, and score in the far column: Enter acreage of wetland here:-2-Lacres, and source: [Xl.,v Lf'dL. 4b. Wetland classes: Circle the wetland classes below that qualify: Open Water: if the area of open water is > 1/4 acre Aquatic Beds: if the area of aquatic beds> 1/4 acre, (~merge~ if the area of emergent class is > 1/4 acre, ~rub-Shru) if the area of scrub-shrub class is > 1/4 acre, - 6res~ if area of forested class is > 1/4 acre, Add the number of wetland classes, above, that qualify, and then score according to the columns at right e,g. If there are 4 classes (aquatic beds, open water, emergent & scrub- shrub), you would circle 8 points in the far right column, 4c. Plant species diversity. For each wetland class (at right) that qualifies in 4b above, count the number of different plant species you can fmd that cover more than 5% of the ground, You do not have to name them. ~ Aquatic Bed Score in column at far right: e.g. If a wetland has an aquatic bed class with 3 species, Emergent an emergent class with 4 species and a scrub-shrub class with 2 species you would circle 2, 2, and 1 in the far column. Note: Any plant species with a cover of> 5% qualifies for points within a class, even those Scrub-Shrub that are not of that class, Forested Circle scores that qualify ~ >200 40-200 10-40 5 - 10 1 - 5 0.1 - 1 < 0,1 ~ 6 5 4 3 2 U2 o # of cla<;ses B2i.n1s 1,. ,.,.,0 2.,."..3 @.....6 4""..,8 5 . .. , , . ,10 # species in class 1 2 3 >3 1 2-3 @ >5 1 ~ >4 1 2 @ >4 (p ~ o 1 2 3 o 1 2 3 z. o 1 2 3 z o 1 2 3 -z. 29 \) 4d. Structural diversity. If the wetland has a forested class, add I point if each of the following classes is present within the forested class and is lar!;!er than I /4 acre: -trees> 50' tall . . . , , . . , . . . . , , . , , , , , , -trees 20'- 49' tall , . , . . . , . . . , , . . , , , . , -shrubs, , , , , . . , . , , . . , , . . , , . . . . , . . . , , -herbaceous ground cover. , , . , . , . . . . . . Also add I point if there is any "open water" or "aquatic bed" class immediately next to the forested area (ie, there is no scrub/shrub or emergent vegetation between them). 4e. Decide from the diagrams below whetherinterspersion between wetland classes is high, moderate, low or none? If you think the amount of interspersion falls in between the diagrams score accordingly (Le. a moderately high amount of insterspersion would score a 4, while a moderately low amount would score a 2) none low moderate moderate 4f. Habitat features. Answer questions below, circle features that apply, and score to right: Is there evidence that the open or standing water was caused by beavers Is a heron rookery located within 3oo'? Are raptor.nest/s -!oGated within :3oo'? Are there at least 3 standing dead trees (snags) per acre greater than 10" in diameter at "breast height" (DBH)?, Are there at least 3 downed logs per acre with a diameter > 6" for at least 10' in length? Are there areas (vegetated or unvegetated) within the wetland that are ponded for at least 4 months out of the year, and the wetland has not qualified as having an open water class in Question 4b. ? 30 ~ lts S- YES - I <::f High - 5 Moderate - 3 <;t9w - D None - 0 J low hio-h b YES::: 2 YES::: 1 YES::: 1 YES::: 1 YES::: 1 YES:::2 s 4g. Connection to streams. (Score one answer only.) 4g,l, Does the wetland provide habitat for fish at any time of the year AND does it have a perennial surface water connection to a fish bearing stream. YES==6 4g.2 Does the wetland provide fish habitat seasonally AND does it have a seasonal surface water connection to a fish bearing stream, YES ==4 4g.3 Does the wetland function to export organic matter through a surface ~ water connection at all times of the year to a perennial stream, 4g.4 Does the wetland function to export organic matter through a surface water connection to a stream on a seasonal basis? YES ==2 4h. Buffers. Score the existing buffers on a scale of 1-5 based on the following four descriptions, If the condition of the buffers do not exactly match the description, score either a point higher or lower depending on whether the buffers are less or more degraded. Forest, scrub, native grassland or open water buffers are present for more than lOO'around 95% of the circumference, Score == 5 Forest, scrub, native grassland, or open water buffers wider than 100' for more than 1/2 of the wetland circumference, or a forest, scrub, grasslands, or open water buffers for more than 50' around 95 % of the circumference. Score == 3 Forest, scrub, native grassland, or open water buffers wider than 100' for more than 1/4 of the wetland circumference, or a forest, scrub, native grassland, or open water buffers wider than 50' for more than 1/2 of the ~r~-:D wetland circumference. No roads, buildings or paved areas within 100' of the wetland for more than 95% of the wetland circumference. Score == 2 No roads, buildings or paved areas within 25' of the wetland for more than 95% of the circumference, or No roads buildings or paved areas within 50' of the wetland for more than 1/2 of the wetland circumference, Score == 1 Paved areas, industrial areas or residential construction (with less than 50' between houses) are less than 25 feet from the wetland for more than 95% of the circumference of the wetland. Score == 0 31 'tj- -c &, 4i. Connection to other habitat areas: Select the description which best matches the site being evaluated, -Is the wetland connected to, or part of, a riparian corridor at least 100' wide connecting two or more wetlands; or, is there an upland connection present >100' wide with good forest or shrub cover (>25% cover) connecting it with a Significant Habitat Area? - Is the wetland connected to any other Habitat Area with either 1) a forested/shrub corridor < 100' wide, or 2) a a corridor that is> loo'wide, but has a low vegetative cover less than 6 feet in height? -Is the wetland connected to, or a part of, a riparian corridor between 50 _ 100' wide with scrub/shrub or forest COver connection to other wetlands? - Is the wetland connected to any other HabitatArea with narrow corridor (<l 00') oflow vegetation (< 6' in height)? - Is the wetland and its buffer (if the buffer is less than 50' wide) completely isolated by development (urban, residential with a density greater than 21acre, or industrial)? '-., --- YES =5 YES = 3 YES =3 YES=1 - ~S=i) Now add the scores circled (for Q.Sa - Q.5; above) to get a to% 22-- ~ Is the Total greater than or equal to 22 points? S _ rAt~go I NO = Category III ~ 7-') !3- '1---V 32 DA T A FORM 1 (Revised) Routine Wetland Deterntination (W A State Wetland Delineation ManuaI or 1987 Co s Wetland Delineation Manual) Project/Site: ~'L t-t q q ') - r; c)o - 01 c:; Applicant/owner: BCJB ttf\~ld/\U\!DI'-\ 'Investi ato s): ,UEW U"-'I Do Normal Circumstances exist on the site? Is the site significantly disturbed (atypical situation)? Is the area a potential Problem Area? Ex laoation of a ical or roblem area: VEGETATION (For strata, indicate T = tree; S = shrub; H = herb; V = vine) @) yes yes no ~ -0V Dominant Plant S ies Stratum % cover Indicator Dominant Plant S ies I go' t.!..I+ T D T /D 5 - fro IDa, HYDROPHYTIC VEGETATION INDICATORS: % of dominants OBL, FACW, & FAC 4'0% Check all indicators that apply & explain below: Visual observation of plant species growing in areas of prolonged inundation/saturation Morphological adaptations Technical Literature Hydrophytic'vegetation present? yes ~ Rationale for decisionlRemarks: Date: ({ 15 0') County: JI::./pa<- '5f:>t+ State: v:-.tA srr/R: 5 Corrununity ID: Transect ill: Plot ill: v-I\rftPolNT 4F / Stratum % cover Indicator PhysiologicaJ/~eproductive adaptations' Wetland plant database Personallcnowledge of regional plant corrununities Other (ex lain) ~ HYDROLOGY,' Is it the growing season? @ no Based on: - 4 7. 50 soil temp (record ;emp' other (ex lain) Dept of inundation: fJ-D ~ inches Water Marks: yes no on Drift Lines: yes no OxidiUd Root (live roots) Channels <12 in. es no FAC Neutral: yes no Depth to free water in pii: fJON? inches De th to saturated soil: AJ~ inches Check all that apply & explain below: Stream, Lake or gage data: Aerial hotoora hs: Wetland hydrology present? Rationale for decisionIRemarks: Other (explain): Other: yes ~ Sediment Deposits: yes no Drainage Patterns: yes no Loca1 Soil Survey: yes no Water-stained Leaves yes no , SOILS : Map Unit Name ALL ALtJtJzuJi:J:>w i (Series & Phase) ! I Taxonom ) DL1STeJL Ef.iTlC PUeoCH-~ Drainage Class ( tie - ( Field observations confirm Q No d e? I Profile Description i Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil I (inches) (Munsell (Munsell size & contrast structure, etc: profile moist) moist) (match description) D-L}- "?&ff ---<---- - I ~1'1-k;p\Jo 4-1 'P loYJ~3t { 0 '11'?.. I )/5 , ~ Hydric Soil Indicators: (check all that apply) _ Histosol _ Matrix chroma S; 2 with mottles _ Histic Epipedon _ Mg or Fe Concretions _ Sulfidic Odor _ High Organic Content in Surface Layer of Sandy Soils _ Aquic Moisture Regime _ Organic Streaking in Sandy Soils _ Reducing Conditions _ Listed on Nationa1/LocaI Hydric Soils List - Gleyed or Low-Chroma (=1) matrix Other (explain in remarks) Hydric soils present? yes ~ Rationale for decisionlRemarks: Wetland Determination (circle) Hydrophytic vegetation present? yes @ Hydric soils present? yes W Is the sampling point yes <@2. Wetland hydrology present? yes ~ within a wetland? RationaleIRemarks: . '--n(}; &Ji~ "'IOTES: Revised 4/97 DA T A FORM 1 (Revised) Routine Wetland Determination (W A State Wetland Delineation Manual or 1987 Co s Wetland Delineation Manual) Project/Site: ~(1:;L-:# 4'1<)- ft;w- Ole) Applicant/owner: [:1)6 ttft R-/!JNurTDJ'~ D)(LLE7 no @ ~ Date: 1/ I'i) 03 County: j1::-TFa2S ON State: W A srrfR: 52-( T 2 '?3 12--1 E W/Y1 Community ID: Transect ID: Plot ID:.:pAt:A ff)NT it-?... Dominant Plant S ies Stratum % cover Indicator Dominant Plant S ies Stratum % cover Indicator I 5/)' c /" 4D fJ CU -r ID me 5. ruo f{fO " HYDROPHYTIC VEGETATION INDICATORS: % of dominants OBL, FACW, & FAC SO % Check all indicators that apply & explain below: Visual observation of plant species growing in areas of prolonged inundation/saturation ~ Morphological adaptations Technical Literature Hydrophytic 'Vegetation present? yes no Rationale for decisionlRemarks: Physiological/reproductive adaptations' Wetland plant database Personallcnowledge of regional plant communities Other (ex lain) ~ -.:L ~ HYDROLOGY. Is it the growing season? (jg) no , LL-o Based on: 0- soil temp (record temp' ! 7. j ) other (ex lain) Dept of inundation: N. inches Depth to free water iri pit f.l ()yV~ inches De th to saturated soil: ';j) inches Check all that apply & explain below: Stream, Lake or gage data: Aerial hotoctra hs: Other: Wetland hydrology present? yes Rationale for decisionlRemarks: Water Marks: yes no on Drift Lines: yes no Oxidized Root (live roots) Channels <12 in. es no FAC Neutral: yes no Other (explain): no Sediment Deposits: yes no Drainage Patterns: yes no Local Soil Survey: yes no Water-stained Leaves yes no SOILS Map Unit Name i'v.-L- ALUtJU,()OJY) (Series & Phase) Drainage Class ( VQ - f ) D~S rtuc... EN. Tic Dueoctt(ltlTC) Field observations confirm ma d e? Yes Q ~ I Profile Description I Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil ! (inches) {Munsell (Munsell size & contrast structure, etc: profile , moist) moist) (match descriPtion) ()-') /qf<-1j) .5/h"-tf}v/ [".DfIvv\ 10112- I (DY~ 4rr S~{~ Sh'liJ'~l -4/3 '-)-10 IDft 5/2 I~ ~ ( ()'{ f2- ~ 3(2 \ ~y::~~ ~ Hydric Soil Indicators: (check all that apply) ~ Matrix chroma ~ 2 with mottles _ Histosol _ Histic Epipedon _ Mg or FeConcretions _ Sulfidic Odor _ High Organic Content in Surface Layer of Sandy Soils _ Aquic Moisture Regime _ Organic Streaking in Sandy Soils _ Reducing Conditions _ Listed on NationalJLocaI Hydric Soils List -::L. Gleyed or Low-Chroma (=1) matrix Other (explain in remarks) Hydric soils present? .f:j) no Rationale for decisionlRemarks: H Wetland Determination (circle) Hydrophytic vegetation present? ~ no ~ Hydric soils present? ~ no Is the sampling point no Wetland hydrology present? ~ no within a wetland? RationaleIRemarks: RC\lsed 4/97 :" ~'9:.l.;. Bob Harrington Buffer Reduction Plan Parcel # 995-600-015 January 2004 Contents Introduction Jefferson County Unified Development Code Wetland Buffer Definition ' Standard Buffer Requirements Reducing Buffer Widths Buffer Reduction Plan Revegetation Requirements Stormwater Control Summary Sheet #1 Potential Building Envelope and Findings Map E-d ~BO:ll VO vO ~~w ~ ....~l;: Bob Harrington Buffer Reduction Plan Parcel # 995-600-015 January 2004 Introduction A wetland delineation conducted on November 2003 identified a stream with an E\Ssociated Class II wetland on the subject parcel (Lot 15), The stream and the associated wetland are located on the northern boundary the lot and the remainder of-the lot falls within the associated laO-foot buffer, The purpose of this report is to define options for potential building envelopes to allow development on this parceL In order to accommodate a feasible building site, this project will require the reduction ofthe standard 100-foot buffer by more than the allowable 25% (see 3.6.9 (6) below: Primary goals are to define a building area with the least degradation or impacts to the wetland and buffers, Jefferson County Unified Development Code (January 2001) Section 3.6.9 (2) Wetland Buffer Definition: A designated area aqjacent to a wetland that protects, and is integral to the wetland ecosystem. Buffers provide shading, input a/organic debris, and coarse sediment, room for variation in [he stream or wetland boundaries, habitat to wildltfe, and protection porn harmful intrusion necessary 10 protect the publicFom losses sl1ffered when the functions and values of aquatic resources are degraded. 3.6.9 (5 iii) Standard Buffer Requirements Buffin; shall remain naturally vegetated except where the vegetation has been disturbed, invaded by highly undesirable species, or would substantially benefit for the inCFeased diversity of introduced (native) species. Where buffer disturbance has occurred during construction, rephmting 'with native vegetation shall be required.. A1inor priming of vegetation to enhance views and removal of undesirable species (e.g. alders) may be permitted by the Director on a case-by-case basis. 3.6.9 (6) Reducing Buffer Widths: The Administrator may reduce the standard wetland buffer }1lidth, when the project applicant demonstrates both of the following to the satisfaction o/the Administrator: i. Standard wetland buffir width averaging as set forth in this section is urifeasible. Harrington Buffer Reduction Plan January 2004 1 Olympic Wetland Resources, Inc v'd eSO:ll VO vO Jew ~~.;: ii. The project application includes a bu.ffer enhancementplan using native vegetation. which suhskmtiates that an enhanced bu.ffer will improve the functional attributes of the buffer to provide additional protection for {he fimctions and values. Buffer Reduction Plan Buffer reduction will be applied to allow the applicant to build a single-family residence within Lot 15. The property is within an established residential neighborhood. Houses lie to the south and across the street (Argyle Lane and Cameron Drive) and the Port Ludlow Golf Course defines the eastern boundary. Adjacent property to the north is undeveloped. Neighboring houses range from 1700 square feet to 2600 square feet (not including garages which average an additional 500 square feet), Due to the limitations of this' building lot and to minimizing the size of the footprint it is recommended that a two-story ~tructure be designed. The wetland and associated stream are contained on the northern boundary Qfthe property. The bui lding envelope and driveways should therefore be restricted to the southern edge of the property to minimize buffer impacts, Buffer reduction required for a house site would be from 50% to 75%. A driveway should be sited near the southern property boundary as far from the wetland a possible. The driveway, calculated at 12 feet wide wouLd remain within the 25% buffer reduction area. Please refer to the enclosed map (Potential Building Envelope). P'resently this si te consists of a high diversity (22 species) of mature native vegetation, Goals should include the least possible impacts to the site as possible. The building envelope should be clearly marked to minimize vegetation removal while clearing for a building site within the buffer, Vegetation should only be removed in the area specifically required for the building footprint and driveway. Revegetation Requirements Any building permits applications associated with this parcel should be accompanied with a revegetation plan to re-establish native species. The revegetation plan should be designed to re- vegetate areas that were disturbed during the building process. The revegetation plan should include consist of native trees and shrubs. Stormwater Control All storm water from the project will be'directed away from the wetland. Sediment or runoff from the project should be minimized with the use of straw bales or sediment fences. This will be required during the entire building process and will continue to be required until the vegetation becomes established andean act as a natural filter. Harrington Buffer Reduction Plan January 2004 2 Olympic Wetland Resources, Inc S.d ~80:I1 VO vO ~~W :s ..,..~t Summary The subject parcel (Lot 15) o'Wned by Bob Harrington is completely within buffer boundaries of a Class II wetland. Buffer reduction is necessary to establish a building envelope on the site, The wetland is associated with a drainage easement and is located on the northern boundary. All building should be designed on the southern edge of the property for minimum impact within the buffer. A revegetation plan should accompany any building permits associated with this parcel. Final determination of buffer reduction and building site approval will be determined by the Jefferson County Department of Community Development planning department. Ifthere are any further questions please fe{(l free to call. Dixie Llewellin, Principal Biologist Olympic Wetland Resources, Inc. Certified for Wetland Delineation, 1987 Corps of Engineer Manual Wetland Training Institute, June 1995 Harrington Buffer Reduction Plan January 2004 3 Olympic Wetland Resources, Ine Sod ego:!! vO vO ..Jew ~ f~ " \ I I~ I~ \; '''l ,. .... \ ~~ ~ ~ i:\ , t ~ ~ I:'" L _ I.... f ~ ":: ~ I ~~} . ~~~ ;:"1 :a r:: ~ t ~5~fr['" "Cd":: ~ ""l>f;8 ~ an'" it s:: c,. 'eo ~1'< ~.~Eg.. ~ ..." .. ~ o-a B .., .. 10 .. ~,~f.l ~~ ~m~[g ji ' f , J ~ i IIFl~ ii~~IF' ~!lf"'5'~ ~H~"r~ . j22!'ii' ... N' 2 0.... ()on:tHJ~ 10 f!. i'" ' '< .. N ", .' \) " ;.... ~ 'i.. "', . ~..; ~ Ilo :c.. '" .. l. " ' ' '-' \'" ~ II ~ i . \ ... .. l' t. ." .1" C': ~ ~e\ \ \ ~i '" , .. \ '. ~ \~ '~\ i l ~ \.... '\ ~ \ " .. . ~ . . . 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