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Home My WebLink AboutLog109 l. }" Parametrix ENe'NIEERING . PLANNING. eNVIRONMENTAL SCleNCEII RECEIVED OCT 2 5 2005 JEffERSON COUNTY DLD 411 10Sth AVENUE NE, SUITE 1800 BELLEVUE, WA 98004-.5571 T. 425 . 458 . 6200F. 425 . 458. 6$3 ww'W..pM:Mt)~.rnm TECHNICAL MEMORANDUM Date: October 20, 2005 To: Jim Parker, Jefferson County Public Utility District No.1 From: Paul Anderson Subject: Results of Marrowstone Island Wetland Reconnaissance Survey cc: Jan Cassin Project Number: 553 - 1820 - 010 (01/03) Project Name: Marrowstone Island Wetland Reconnaissance This memorandum summarizes the results of the recent wetland reconnaissance survey along approximately 25 miles of public and private road on Marrowstone Island, Jefferson County (portions of Sections 3, 4, 5, 8, 9, 16, and 17 of Township 29 North, Range 1 East; and Sections 17,19,20,21,28,29,32, and 33 of Township 30 North, Range 1 East; Willamette Meridian). Jefferson County Public Utility District NO.1 (PUD No.1) is proposing to install a new water supply system on Marrowstone Island, including a new water main for the length of the island (Figure 1). The water main will be installed along State Route (SR) 116 from the south end of Marrowstone Island at Scow Bay to Fort Gate Road at Fort Flagler State Park on the north end of the island, as well as along Griffith Point Road. New water service will ultimately be installed along the other roads on the island for hookup to individual PUD NO.1 customers. Parametrix conducted a field investigation on July 5, and 7, 2005 to locate and identify potential wetlands within the project area. Topography in the project area is gentle varying between sea level and the highest point on the island at approximately 194 above mean sea level, on the south end of the island. Much of the island remains forested with residential development concentrated along the marine shorelines to the south of Fort Flagler State Park. The principal land use on the island is rural residential (Jefferson County DCD 2005a). The small, unincorporated community of Nordland is found in the central portion of the island along SR 116 on the southeastern shore of Mystery Bay. Public facilities on the island include Fort Flagler State Park, a 784-acre park that includes marine shoreline occupies the site of a former U.S. Army installation at the north end of the island; Mystery Bay State Park, a 6-acre park approximately 0.6 mile north of Nordland on the eastern shoreline of Mystery Bay, and East Beach Park, a small Jefferson County facility approximately 0.7 mile northeast of Nordland on the eastern shoreline of Admiralty Inlet. LOG rTFJVi # leG n;';~..''!'~--1''~.12'' r ~"1V- IJ. .... .c....",...~. ,_....___. '_" _. , . NWater Line 0.4 , o 0.4 0.8 Miles tx N Approximate wetland recon nais sance survey area, . propo se d water s yste m for Marrowstone Island, Nordland USGS quad Figure 1. Wetland reconnaissance project area. LOG iTEf\/i #.- ,--.- ~ ti} l~."J Pag~3.._k.:- ot -S R E. (~'E. '..r \( r.iE." '-:" Y.....'..,.'. <I . ., I! II I,' ,1l . .I ~ \y' I All i 01'1' 2 w .... '~~: -~) JEfHHSON WiHJTY OLD , . METHODS The wetland reconnaissance survey area was within approximately 100 feet of the road shoulders based on a visual inspection of site conditions for the project area, which included public and private roads identified in a figure, provided by PUD NO.1 in April 2005. Wetlands were identified from field indicators (vegetation and evidence of water) easily observable from the road or utility easement. Detailed vegetation, soils, and hydrology sampling or characterization were not included in this survey. Visual inspection will also identify areas where the proposed route is near or adjacent to the shoreline of marine waters. The northern extent of the reconnaissance area was the Fort Flagler State Park water reservoir; the southern extent was the southeastern shoreline of Indian Island. The approximate locations of wetlands within the reconnaissance area were sketched on project plan sheets provided by PUD NO.1. In addition, wetlands were assigned a preliminary class following the U.S. Fish and Wildlife Service's wetland classification system (Cowardin et al. 1979) and the likely Jefferson County wetland category and associated buffer as specified in 93.6.9 of the Jefferson County Unified Development Code (UDC). Photos were also taken of most of the wetlands. FIELD OBSERVATIONS The entire project area was surveyed during the wetland reconnaissance, except for one gated, private road off of East Beach Road. Thirty-eight likely wetlands and an additional 8 potential wetlands were identified within the project area (Figures 2 and 3). All but 3 of the 38 likely wetlands (MIWD07, MIWD25, and MIWD34) were adjacent to or within approximately 60 feet of the road and all of the potential wetlands were adjacent to the road. The potential wetlands were usually associated with roadside ditches where the ditch appeared to be the primary hydrologic source and wetland vegetation did not extend beyond the immediate vicinity of the - ditch. Due to the recent Talent Decision. some roadside ditches have been determined to be under the jurisdiction of the U.S. Army Corps of Engineers. Determining whether the potential wetlands found during the Marrowstone Island wetland reconnaissance are jurisdictional wetlands is beyond the scope of this study. For the purposes of this report, all of the likely and potential wetlands will be discussed as wetlands in the following sections. The highest occurrence of wetlands (19/46) was in the southeast portion of the island where several east-west roads crossed two large wetland complexes shown on the Jefferson County wetlands map (Jefferson County DCD 2005b) (Figures 2 and 3). Of the palustrine wetlands, scrub-shrub was the most common wetland class found (23/46), followed by forested (12/46), and emergent wetlands (8/46) (Appendix A). Three estuarine wetlands were identified within the project area, one estuarine complex (MIWDOO) to the north and south of the SR 116 causeway linking Indian and Marrowstone Islands, one at the south end of Mystery Bay to the south of Nordland (MIWD04E), and a small estuarine wetland (MIWD07) 110 feet to the west of the road and north of the Bert Ooms properties in Section 19. Extensive wetlands paralleling the proposed work areas were found south of Nordland, on the uphill side of the Griffith Point Road, and to the north, west, and east of the East Marrowstone Road and Renier Road intersection. The wetlands south of Nordland are found on both sides of SR 116 and include estuarine wetlands along the Mystery Bay shoreline. North of Renier Road, wetlands extend along approximately 1,200 feet on the west side of East Marrowstone Road and for approximately 500 feet on the east side. LOG iTEr", J ./ #..---. ('~+ . tJf;;oC3A '1 of (") j ~"st,;.1-._.~ ,..._~ RECEIVED OCT 2 5 2005 JEffERSON COUNTY DeD Air. Lkel'f iI. Pot~ ntial ~ MarrowstQn els: I.W.etian,ds N 004 , o 004 0.8 Miles Wetland areas identified during July 2005 Marrowstone Island wetland reconnaissance, south portion of the island. Figure 2. Wetland reconnaissance results, south Marrowstone Island. L 00 rr'!::f'" ..... \.;l ._,vi # (O~ Page~:"~ at (~ A Lkely ~ Potential ~ N 04 , o 0.4 0.8 Miles Marrowston eo Is I Ulf etlands Wetland areas identified during July 2005 Marrowstone Island wetland reconnaissance, north portion ofthe island, Figure 3. Wetland reconnaissance results, north Marrowstone Island. i C},""" ','f C," ~}~ .- \.:;J I ,_ f'li I #, ~." D --- +--- y age_, -5-.0 f.. _~_ Based on the preliminary analysis of project area wetlands, all 4 of the Jefferson County wetland categories were found during the reconnaissance. Category III wetlands were the most common (18/46), Category II and Category IV wetlands accounted for 13 wetlands each, and there were 2 Category I wetlands (Attachment A). These results are based on a preliminary analysis and the wetland category for an individual wetland may change following a delineation and more detailed assessment. Planning for installation of the water system will require additional information on potential wetland or buffer impacts including, but not limited to: 1) refining the project plans for the water line locations and construction methods to avoid wetlands and buffers, 2) delineating wetlands where potential impacts cannot be avoided, and 3) reviewing other permitting that may be required for the project. In addition to installation of the water line, staging and stockpile areas have the potential to impact sensitive areas and should be selected to avoid wetland and buffer impacts to the greatest extent practicable. Potential wetland impacts and work within the shoreline zone of marine waters may require permits from County, state, and federal agencies. Designing the water system to minimize impacts to wetlands and other critical areas is an important step in possibly expediting the permitting process. Determining whether potential project impacts will trigger or may be exempt from permitting requirements, and supporting environmental studies, is in the purview of the permitting agencies. RJECE KVJF~ll ocr 2 5 2005 IJEHERSON COUNTY DLD LOG ITEfvl #_-~- P';:"g."o~" Of U c;;.,.v . , T'__ . . . "'-_',,_. _ REFERENCES Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. Government Printing Office, Washington, D.C. Jefferson County DCD (Department of Community Development). 2005a. Jefferson County comprehensive plan land use designations, Eastern County map. Available at: <http://www.co.jefferson.wa.us/commdevelopmenUcomplan pdfs/compplan2004_ 400dPL fromEPS.pdf>. Port Townsend, WA. Jefferson County DCD (Department of Community Development). 2005b. Jefferson County interactive critical areas map. Available at: <http://maps.co.jefferson.wa.us/Website/mspub/viewer.htm?mapset=temp _ esa>. Port Townsend, WA. LOGrl # U" . ~_ ___" 0 ~ --, r..')-;"g" 0 ~f {? :i a~...,..'v_~_"<~....,t",;~,,,~ Attachment A Wetlands and Potential Wetlands Identified during the Marrowstone Island Wetland Reconnaissance LOG rl EN1 ~\''") # . -_.- ----- - ...., n,,:f'V:\ (.) of L3.- r >;'''~ji'v,_,_U-_ "' , . Wetlands and potential wetlands identified during the Marrowstone Island wetland reconnaissance, July, 2005, estimated Jefferson County wetland category, and wetland buffers. Buffer distances are in feet for delineated and undelineated wetlands per the Jefferson County UDC 93.6.9(2). IDENTIFIER MIWDOO MIWD01 MIWD02 MIWD03-04 MIWD04E MIWD05 MIWD06 MIWD07 MIWD08 MIWD09 MIWD11 MIWD12 MIWD13 MIWD14 MIWD14 MIWD15 MIWD16 MIWD17 MIWD18 MIWD19 MIWD20 MIWD21 MIWD22 MIWD23 MIWD24 MIWD25 MIWD26 MIWD27 MIWD28 MIWD29 MIWD30 MIWD31 MIWD32 MIWD33 MIWD34 MIWD35 MIWD36 MIWD37 . Wet Area Wet Ditch Wet Ditch Wet Ditch Wet Ditch TYPE Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Likely Wetland Potential Wetland Potential Wetland Potential Wetland Potential Wetland Potential Wetland WETLAND CLASS ESTUARINE PSS PSS-Ditch PSS/PEM ESTUARINE PSS-Ditch PFO/PSS ESTUARINE PEM PEM PEM-Wet Ditch PSS-Wet Ditch PEM/POW PSS PEM PFO/PSS PFO PSS PFO/PEM PSS PFO PSS-Wet Ditch PFO/PEM PSS/PEM PSS PSS PSS PSS PSS PFO PSS PFO/PSS PFO PSS PSS PFO/PSS PFO PFO Mixed PSS/UPL PSS PSS PEM PSS CA TEGORy1 I III IV III I IV III II IV III IV III II III IV II III III II III II IV II III III III II II II II II II III III III III II III III IV IV IV IV BUFFER (ft) 150/225 50/75 25/37 50/75 150/225 25/37 50/7 5 100/150 25/37 50/75 25/37 50/75 100/150 50/75 25/37 100/150 50/75 50/75 100/150 50/75 100/150 25/37 100/150 50/75 50/75 50/75 100/150 100/150 100/150 100/150 100/150 100/150 50/75 50/75 50/75 50/75 100/150 50/75 50/75 25/37 25/37 25/37 25/37 LOG rTEfvl # (a' ..__._-,~--:-:;; ~_or_J.L .. Wet Ditch Potential Wetland PSS/PEM IV 25/37 Wet Ditch Potential Wetland PEM-Ditch IV 25/37 Wet Ditch Potential Wetland PEM IV 25/37 1 Preliminary estimate of wetland category based on characteristics observed during reconnaissance and categories as defined in UDC 93.6.9. For illustrative purposes only. Wetlands have not been delineated and categories of individual wetlands may change following delineation. Jefferson County does not regulate Category II wetlands less than 2,500 square feet in area or Category III or IV wetlands less than 10,000 square feet in area. LOG I.r r-:r- ~ I ,_,VI ~#___ (O~_._._~ Pt3;g'3,_"..LO of C3 ---- "'...,.-- Marrowston e Is I W etlan ds At.. Lkel\< . Potentia I ~ N 0.4 , o 0.4 0.8 Miles Wetland areas identified during July 2005 Man-owstone Island wetland reconnaissance. north portion of the island. I n~ I J::I\Jl ~ . _;0,.. #_ loq Page__.ll- 0(_[3 Marrowston e Is I W etlan ds A LIo: e Iv . Potentia I ~ N 0.4 , o 0.4 0.8 Miles , . Wetland areas identified during July 2005 MalTowstone Island wetland reconnaissance, south portion of the island. - -----". # Page LUl::J I I CI I tOl 1'2 of.E- " NWater Line ~ N 0.4 , o 0.4 0,8 Miles Approximate wetland reconnaissance survey area, proposed water system for Marrowstone Island, Nordland USGS quad. LOG ITEM #- J 09 Page,,___LL of-13_