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Home My WebLink AboutLog197 It e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Prepared for Jefferson County PUD No.1 p.o. Box 929 Port Hadlock, W A 98339 Prepared by Parametrix 411 108th Avenue NE, Suite 1800 Bellevue, WA 98004-5571 425-458-6200 www.parametrix.com RECEIVED .n: t. JEffERSON COUNlY Den May 2006 I 553-1820-010 LOG ITEM # ~I Pag'3___+-otQ -- e CITATION Parametrix. 2006. Final Marrowstone Island Water System - Aquatic Resources Impact Assessment. Prepared by Parametrix, Bellevue, Washington. May 2006. LOG ITEM # rq::r Pag'3._-bot ~3. e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No. 1 TABLE OF CONTENTS 1. INTRODUCTION ......... ..... ......... ..... ..... ......... ..... ......... ..... ..... ......... ..... ......... ....... 1-1 1.1 PROJECT OVERVIEW .........................................................................................1-1 1.2 STUDY AREA..... ............................ ......... ............ ................. ................................ 1-1 1.3 PROJECT DESCRIPTION ....................................................................................1-2 1.4 PURPOSE OF THE REPORT ...............................................................................1-2 1.5 APPLICABLE LAWS AND REGULATIONS .....................................................1-7 2. METHODS .... ..... ..... .... ..... .... .......... .... ..... .... ..... ..... ......... ..... .... ..... .... .............. .... 2-1 2.1 REVIEW OF EXISTING INFORMATION ..........................................................2-1 2.2 FIELD INVESTIGA TIONS........................... ....................... ................................. 2-1 2.2.1 WETLAND IDENTIFICATION AND DELINEATION ............................2-1 2.2.2 WETLAND CLASSIFICATION AND RATING .......................................2-2 2.3 STREAM DELINEATION .............. ................ ...................................................... 2-3 2.4 SHORELINES OF THE STATE ...........................................................................2-3 2.5 FISH AND WILDLIFE HABITAT AREAS .........................................................2-4 2.6 IMPACT ASSESSMENTS ....................................................................................2-4 3. RESULTS ..... ......... ......... .......... .... ..... ......... ..... .... ..... ......... ......... ..... ...................3-1 3.1 EXISTING INFORMATION ............... .............. .................... ................................ 3-1 3.2 WETLAND SURVEYS ............................................. .................. .......................... 3-1 3.3 STREAMS.................. ................................... ................... ...... ................................ 3-1 3.4 SHORELINES OF THE STATE ...........................................................................3-2 3.5 FISH AND WILDLIFE HABITAT AREAS .........................................................3-2 4. IMPACT ASSESSMENT .. ..... .... ..... .............. ..... ......... ..... ..... .... ..... ..... ..... .... ....... 4-1 4.1 WETLAND AND WETLAND BUFFER IMPACTS............................................ 4-1 4.2 STREAM IMPACTS ..... .............................................. ..................... ..................... 4-1 4.3 FISH AND WILDLIFE HABITAT AREAS IMPACTS .......................................4-2 4.4 SHORELINE AND SHORELINE JURISDICTION IMPACTS........................... 4-2 5. M ITIGA TION SE QUENCING ..... ..... ......... ......... ..... ......... ..... .... .............. ..... ....... 5-1 5.1 MITIGATION SEQUENCING.......................... .................... ................................ 5-1 5.2 AVOIDING AND MINIMIZING IMPACTS........................................................ 5-1 5.3 COMPENSATORY MITIGATION ............................. ......................................... 5-2 6. REFERENCES ... ..... .... ..... ..... .... ..... .... ..... ..... .... ..... .... ..... ..... .... ..... .... ..... ..... ........6-1 May 2006 I 553-1820-010 # Page LOG ITEM f3(; _~ at ~3 tit e I Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Jefferson County PUD No.1 TABLE OF CONTENTS (CONTINUED) LIST OF FIGURES A 1 Proposed Water System Alignment and Shoreline Jurisdiction Marrowstone Island Water System............................................................................................... 1-3 A2 Proposed Water System Alignment and Shoreline Jurisdiction Marrowstone Island Water System............................................................................................... 1-5 LIST OF TABLES 1 Criteria for Wetland Rating Categories as Specified by Ecology (1993)...............2-2 APPENDICES A Wetland Reconnaissance Survey Memorandum B Photographs ii LOG ITEM # ( C{ i . May 2006 I 553-1820-010 Page. -q ot33 ACRONYMS ACOE BMP County CWA Ecology FWHAs FWS HPA If NWl OHWM PHS PUD No. 1 SMA SMMP UDC WDFW WSDOT May 2006 I 553-1820-010 e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No. 1 u.s. Army COrpS of Engineers Best management practices Jefferson County Clean Water Act Washington State Department of Ecology Fish and wildlife habitat areas Fish & Wildlife Service Hydraulic Project Approval linear feet National Wetland Inventory ordinary high water mark Priority Habitats and Species Jefferson County Public Utility District No.1 Shoreline Management Act Shoreline Management Master Program Jefferson County Unified Development Code Washington Department of Fish and Wildlife Washington State Department of Transportation LOG ITEM (C1i S-otE # Page iii e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No. 1 1. INTRODUCTION Jefferson County Public Utility District No. I (PUD No.1) is proposing to install a new water supply system on Marrowstone Island. The water system will be installed tlrroughout the island and will be constructed in phases. Phase 1 includes the installation of a new water main and Phase 2 includes the installation of all secondary lines off of the main. Except for approximately 750 linear feet (If) of main in Fort Flagler State Park, the water system will be installed along or within existing roads. This report addresses potential project impacts to aquatic resources on Marrowstone Island, including wetlands, streams, and jurisdictional shorelines. Field surveys (wetland reconnaissance surveys and delineations and OHWM delineations) and a review of existing information were used to assess potential project impacts. Parametrix conducted this study to comply with the requirements of the Jefferson County (County) Shoreline Management Master Program (SMMP) and critical areas regulations as identified in the County Unified Development Code (UDC), Sections 3.6.9 and 3.6.10, and to assist PUD No. 1 in obtaining the necessary permits required for this project. This report reviews applicable regulations and laws, describes aquatic resources in the project vicinity, evaluates potential project related impacts, and describes potential mitigation measures. 1.1 PROJECT OVERVIEW Phase 1 of the Marrowstone Island water system will include the installation of approximately 43,000 If of 8-inch-diameter polyvinyl chloride (pVC) pipe primarily along existing public roads on the island. The water main will be installed in the existing roadside ditch along State Route (SR) 116 and within the shoulders of county roads. Phase 2 of the water system will include the installation of approximately 75,000 If of secondary water lines (2-, 4-, and 6-inch diameter) along existing public and private roads. On gravel roads, the secondary water lines will be installed within the road. This project does not include the hook-ups to individual PUD customers. 1.2 STUDY AREA Marrowstone Island is located between Port Townsend Bay and Admiralty Inlet, to the east of Indian Island. The legal description of the study area includes Sections 29, 28, 32 and 33, Township (T) 30N, Range (R) IE and Sections 4 and 5, T29N, RIW. Parametrix (2005a) performed a wetland reconnaissance survey in July, 2005 of all prospective roads for the water system installation and identified a number of potential wetlands adjacent to or near the project area (Appendix A). Parametrix delineated wetlands along the southerly portion of Schwartz Road and the central portion of Meade Road in August, 2005 (paramentrix 2005b) and at the intersection of East Marrowstone Road and Renier Road in February, 2006. The wetland delineation study area was located within the utility right-of-way, approximately 20 feet beyond the edge of pavement. Parametrix also flagged the ordinary high water mark (OHWM) of marine waters along portions of Reef Road and also SR 116 at Nordland and the causeway between Marrowstone and Indian Islands. The OHWM was flagged following Washington State Department of Ecology (Ecology) protocol (Coastal Training Program Washington 2004). May 2006 I 553-1820-010 LOG ITEM # (qi Page-1a-ot.23 1-1 e e I Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Jefferson County PUD No. 1 1.3 PROJECT DESCRIPTION PUD No. I plans to install an 8-inch water main along existing public roads on Marrowstone Island. The Phase 1 water main alignment runs south from the water reservoir at Fort Flagler State Park, on the north end of the island, to Fort Gate Road; east along Fort Gate Road to SR 116; south on SR 116 to Schwartz Road, East Beach Road, and the Nordland General Store; north on Schwartz Road to the end of the road; east on East Beach Road to East Marrowstone Road; south on East Marrowstone Road to Meade Road; west on Meade Road to SR 116; from the Meade Road SR 116 intersection, north on SR 116 to the intersection with Griffith Point Road, and south from Meade Road on SR 116 to the intersection with Robbins Road (Figures AI, A2). Phase 1 does not include the portion of SR 116 between Griffiths Point Road and approximately the Nordland General Store (SW 1/4 of Section 33, T30N, RIE) or the portion of SR 116 west of the intersection with Robbins Road. The main will be installed in these areas in a subsequent phase of the project. Phase 2 will include installation of secondary service on most of the existing roads on the island (Figures AI, A2). Secondary service will be comprised of 2- to 6-inch PVC pipe and associated valves and fittings. The water main and secondary lines will be installed via open trenches, which will be excavated to a depth of approximately 50 inches and width of up to 24 inches. During excavation, trench spoils will be placed on top of the outboard side (away from the road) of the ditch, or within the roadbed when adjacent to sensitive areas (i.e., wetlands, waters of the state). Once excavated to depth, clean sand will be placed in the trench bottom for bedding material, the pipe will be laid, and the trench back-filled with native, excavated material. After backfilling, excavated areas will be compacted and restored to original grade. Equipment needed for open trench construction will include a backhoe or excavator and hand-operated power tools. Access to all work areas will be along existing public roads, except for that portion of the main (approximately 750 If) between Fort Gate Road and the reservoir in Fort Flagler State Park. South of Fort Flagler State Park, all work areas are accessible from public roads. Construction staging and stockpile areas will be limited to existing improved sites (gravel or paved). All water lines will be installed within the existing, maintained road rights-of-way. Stockpile and staging areas will be located on previously developed areas. This project does not include working directly in wetlands or involve in-water work. The project will have minimal adverse impacts on wetland buffers or natural resources within the shoreline jurisdiction and no adverse impacts on regulated wetlands or waters of the state. 1.4 PURPOSE OF THE REPORT Parametrix has prepared this report to describe wetlands and streams adjacent to proposed work areas and shorelands in the project area; evaluate potential impacts to critical areas from the water system installation; and present mitigation measures for these impacts, as requested by the Jefferson County Department of Community Development in a letter (June 30, 2005) to PUD No.1. This report does not address other critical areas regulated by the County such as geologically hazardous areas and critical aquifer recharge areas. Information presented here is intended to facilitate environmental review and permitting. 1-2 LOG ITEM # (0., . Page.~l ot ~ May 20061 553-1820-010 e Z-V 3HnO s. 3Nn H:>~VW ,I] of' @ i!il ""'\\-W, . $' ,~ .::~ ~ - ".- . 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I . !~~ ."" ~ t- ,~ .- }~ T r-- 1-6 '. '<od?;\ p "t j @. ,...~~ ,~- .,,, 7."',- ~ <>", '. ,l ~ , <<........ ~.r I .-,,,..--, <~~ S ~ ~. :.J.U.. , I !Iii::lf l' -~ lr-.-- i ~ ~~ 10. :1"\.\ - ...... '-.' '1I;;r' mt I h_ III J I i' ~ j F ~\ -'- ...._ ~.y 3lInal:f 338 . 3NI1 H:>.r .. "-- - C E .1 J ;Cc... iE~i -U-u U)-!c !::;,.!! -=".!!! II II CD i::!c ~15.g ~ g,ri I ate-UII ii:a.li::E !! ::J I J 1 I ~ ID ~ :r 0 Ii j I I I <!' . ~ ~ OJ :1:1: QJ I 0.: " I l ~ M Z IL 'C \7~ 1; E I! l. 0 e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No, 1 1.5 APPLICABLE LAWS AND REGULATIONS Local jurisdiction (County), state, and federal laws may apply to activities that may alter wetlands, streams, or waters of the state. Applicable laws and regulations for this study include the UDC, which regulates activities in environmentally sensitive areas; the state Shoreline Management Act (SMA) and Hydraulic Code; and the federal Clean Water Act (CW A). County regulations require assessment of environmentally sensitive areas for all development activities that may affect wetlands; fish and wildlife habitat areas (FWHAs), which include streams and waters of the state; and their associated buffers (UDC ~3.6.4). The UDC also requires a habitat management plan for activities in areas with which critical species listed as endangered or threatened under state or federal law have a primary association (UDC ~3.6.1 O(i)). Wetlands, streams, and other sensitive resources in the project vicinity are also subject to federal and state regulations. At the federal level, wetlands and streams are protected by Section 404 of the CW A, which regulates placement of fill in waters of the United States. The U.S. Army Corps of Engineers (ACOE) is responsible for implementing Section 404 of the CW A. Should the project impact waters of the U.S. (streams, wetlands, or navigable waters), permits from the ACOE would be required. Activities that affect wetlands and streams may also require a water quality certification (CW A Section 401), which Ecology implements at the state level. Ecology reviews projects for compliance with state water quality standards and makes permitting and mitigation decisions based on the nature and extent of impacts, and the type and quality of wetlands and streams being affected. Ecology is not requiring a water quality certification permit for this project. Projects occurring within or over state waters and potentially altering the flow of those waters require an Hydraulic Project Approval (HPA) from the Washington Department of Fish and Wildlife (WDFW). WDFW reviews the HPA application to ensure that the proposed project will not adversely impact fish or shellfish and typically conditions the HP A with specific measures to minimize impacts to the water body. The marine waters surrounding Marrowstone are classified as a shoreline of the state. Lands within 200 feet of shorelines of the state are regulated as shorelands and subject to the provisions of the state SMA which the County administers tlrrough the SMMP. The SMMP requires review and approval of development or activities that may affect shorelines of the state, associated wetlands, or shorelands. Portions of the proposed water system alignment are within 200 feet of the marine shoreline and are therefore subject to the provisions of the SMMP (see Figures AI, A2). May 2006 I 553-1820-010 LOG ITEM # \~7 Page -UL of F'! " !>6 1-7 e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No, 1 2. METHODS This study is based on a review of existing information and field investigations. The goal of these efforts was to document current site conditions and collect new information in order to assess impacts. 2.1 REVIEW OF EXISTING INFORMATION For this study, Parametrix reviewed maps and materials on the soils, hydrology, topography, land use, and wetlands in the study area. Existing data sources that were reviewed for this study included, but were not limited to: · Marrowstone Island Wetland Reconnaissance Survey, Technical Memorandum (Appendix A) (Parametrix 2005a) · Final Marrowstone Island Water System-Phase 1 Wetland Delineation Report (Parametrix 2005b). · Eastern Jefferson County SMMP Map (Jefferson County 1997). · Eastern Jefferson County Wetlands Map (Jefferson County 1995). · Eastern Jefferson County River, Stream, and Shoreline Classification Map (Jefferson County 2001). · Eastern Jefferson County Critical Areas Fish and Wildlife Habitat Map (Jefferson County 1995) · National Wetland Inventory (NWl), Nordland, Washington quadrangle (FWS 1987). 2.2 FIELD INVESTIGATIONS Field investigations of the study area occurred in July, and August, 2005 and February, 2006. Delineated features were marked in the field and instrument surveyed. 2.2.1 WETLAND IDENTIFICATION AND DELINEATION For the purposes of this study, wetlands are defmed as areas saturated or inundated by surface or groundwater at a frequency and duration sufficient to support, and which under normal circumstances do support, a prevalence of vegetation adapted for life in saturated soil conditions. The methods used to delineate the on-site wetlands conform to methods in the 1987 Corps of Engineers Wetland Delineation Manual (Environmental Laboratory 1987) and the Washington State Wetland Identification and Delineation Manual (Ecology 1997). All delineated wetlands were instrument surveyed and mapped on project base maps provided by PUDNo. I. To be considered a wetland, an area must have hydrophytic vegetation, hydric soils, and wetland hydrology. Parametrix collected data on these parameters in areas representative of typical site conditions. For comparison purposes, additional data plots were established in adjacent upland areas to document differences in vegetation, soil, and hydrology. Data plots for delineated wetlands were labeled with blue and white striped flagging. The boundaries of delineated wetlands within approximately 20 feet of the edge of the pavement were marked with sequentially numbered, bright pink flagging. Only those portions of wetlands within the utility right-of-way were delineated. Wetlands were numbered in the order in which they were encountered in the field, and numbering does not reflect geographic LOG ITEM {~rl l ~ of 31 - -- 2-1 May 2006 I 553-1820-010 # Page e e I Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Jefferson County PUD No, 1 location. Additional wetlands adjacent to SR 116 but outside of the project area (i.e., SR 116 between the Nordland General Store and Griffiths Point Road) were also delineated during the field investigations. Federal and state regulatory agencies typically exclude from jurisdiction artificial wetlands that were created from non-wetland sites (Ecology 1997; Environmental Laboratory 1987). This interpretation may also apply to wetland-vegetated drainage ditches excavated in non- hydric soils, based on the determination of jurisdictional ditches and Talent Decision guidance from the Washington State Department of Transportation (WSDOT 2002). The Talent Decision refers to a ruling by the U.S. Ninth Circuit Court of Appeals (Ninth Circuit) in an appeal of a lawsuit against the Talent Irrigation District of Jackson County, Oregon. The Ninth Circuit ruled that the irrigation canals were waters of the U.S. that were subject to CWA permit requirements. The recent Talent Decision, as interpreted by the ACOE, gives the ACOE jurisdiction over any water body that is hydrologically connected to a water of the U.S., including ditches. The ACOE regulatory authority over waters of the U.S. comes from the CW A. Therefore, through the CW A permitting process, the ACOE requests supplemental documentation on all ditches that have any hydrologic connection to waters of the U.S. For this project, wetland-vegetated ditches that were bordered by upland soils and that did not have a surface water connection to other wetlands or streams were not delineated. However, if a ditch with wetland vegetation appeared to function as a natural stream channel, or was dug in hydric soil and supported wetland hydrology, it was delineated as wetland. For example, if a wetland-vegetated ditch appeared to capture and convey surface water or seepage that normally would have collected in a natural channel, it was delineated as a wetland or stream/wetland complex. If a wetland-vegetated ditch did not appear to convey such waters, it was assumed to function primarily as a storm water conveyance feature and was not delineated. 2.2.2 WETLAND CLASSIFICATION AND RATING Delineated wetlands were classified according to the U.S. Fish and Wildlife Service's (FWS) Classification of Wetlands and Deepwater Habitats of the United States (Cowardin et al. 1979) and rated using the Washington State Wetland Rating System, 2nd Edition (Ecology 1993) (Appendix B), per UDC regulation (~3.6.9.a.(l)). Table 1 summarizes the rating criteria for each wetland category. For wetland ratings, the estimated extent of the wetland and adjoining habitat was considered using aerial photographs and existing wetland maps. Buffer widths assigned to wetlands in the study area (Appendix A) reflect requirements in the UDC (~3.6.9.b.(5)). Table 1. Criteria for Wetland Rating Categories as Specified by Ecology (1993) Category 1 Category I Ecology (a) Have documented occurrence of federal or state listed endangered or threatened animal, plant, or fish species; or (b) Consist of high quality native wetland communities which qualify for inclusion in the State Natural Heritage Information System; or (c) Are documented as regionally significant waterfowl or shorebird concentration areas; or (d) Have irreplaceable ecological attributes; or (e) Are documented wetlands of local significance. 2-2 LOG ITEM # J<=11 Page 11<ot33 May 20061 553-1820-010 e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No. 1 Table 1. Criteria for Wetland Rating Categories as Specified by Ecology (1993) (continued) Ecology (a) Satisfy no Category I criteria; and (b) Have documented occurrence of federal or state listed sensitive animal, plant, or fish species; or (c) Contain priority species or habitats recognized by state agencies; or (d) Are wetlands with significant functions which may not be adequately replicated through creation or restoration; or (e) Are wetlands with significant habitat value of 22 or more points on the Field Data Form; or (f) Are documented wetlands of local significance. (a) Are wetlands with significant habitat value of 21 points or less on the Field Data Form; or (b) Are documented wetlands of local significance. (a) Are wetlands less than 1 acre, and hydrologically isolated and, comprised of one vegetated class that is dominated (>80 percent areal cover) by one species considered alien and or invasive; or (b) Are wetlands less than 2 acres, and hydrologically isolated with one vegetated class, and greater than 90% of areal cover is any combination of species considered alien or invasive; or (c) Are wetlands that are ponds excavated from uplands, and are smaller than 1 acre without surface water connection to streams, lakes, rivers, or other wetlands throughout the year; and that have less than 1/10 acre of vegetation. Category I and II Wetlands less than 10,000 square feet and Category III and IV Wetlands less than 2,500 square feet in size are not regulated by Jefferson County per UDC 3.6.9.a.(2). Category 1 Category II Category III Category IV 2.3 STREAM DELINEATION Streams are delineated in the field based on the presence of a defined bed and bank and flowing water or evidence of flowing water (scouring, debris deposits). Delineated streams were classified based on the criteria in Washington Administrative Code (WAC) Chapter 222 16-030 (~UDC 3.6.8.a.(3)). 2.4 SHORELINES OF THE STATE The OHWM for shorelines of the state, as defmed in WAC Chapter 173 22-030, was identified and flagged following Ecology's protocol (Coastal Training Program Washington 2004). For low energy marine environments, this is clarified as the landward limit of salt tolerant vegetation. The OHWM was flagged as the landward wetland boundary line in the field. For this study, shorelands were calculated using the field delineated OHWM and for areas not field-delineated, the existing high tide line provided in the PUD base data. To be conservative in estimating shorelands extent and to account for potential variance in the mapped base data from field conditions, the OHWM shoreline buffer was calculated for 250 feet on Figures Al and A2 above. The SMMP (SMMP 4.10) has established 5 primary shoreline designations: Aquatic, Natural, Conservancy, Suburban, and Urban. The amount of development allowed varies between the shoreline designations. Performance standards for each of the designations are included in the May 2006 1 553-1820-010 LOG ITEM \~g { ~ ot '.3 3 2-3 # Page e e I Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Jefferson County PUD No. 1 SMMP to protect socially important and environmentally sensitive areas and resources. The County (1997) has mapped the shoreline designations for all of its regulated shorelands. 2.5 FISH AND WILDLIFE HABITAT AREAS Documented and potential FWHAs were assessed by reviewing the County FWHA map (Jefferson County 1995) WDFW Priority Habitats and Species (PHS) maps (March, 2006), and during the site visits. 2.6 IMPACT ASSESSMENTS Areas with sensitive aquatic resources potentially impacted by project implementation were assessed by overlaying the surveyed delineation boundaries and calculated shoreline buffer onto project base maps and then calculating the appropriate buffer locations. Impact areas were determined as the area of intersection between the delineated and calculated aquatic resource boundaries and the proposed water system alignment on the base maps. Where wetlands and the proposed alignment intersected, the alignment or construction methods were modified to avoid direct wetland impacts. This assessment also considered loss of buffer functions based on the existing buffer conditions and the amount of clearing or alteration within the buffer as a result of the proj ect. RECEIVED JEfffASON COUNTY DeD 2-4 LOG ITEM # ~ql _, Page_rlof.33 May 20061 553-1820-010 e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No, 1 3. RESULTS The following sections describe aquatic resources in the study area. This includes an overview of project area wetlands, streams, and shorelines based on a review of existing literature and site visits. 3.1 EXISTING INFORMATION The Nordland quadrangle NWl map (FWS 1987) shows estuarine subtidal and intertidal wetlands along nearly all of the marine shoreline of Marrowstone Island, and scattered palustrine (freshwater) emergent and scrub-shrub wetlands tlrroughout the island. Palustrine wetlands are predominantly found on the east side of the island. A number of the palustrine wetlands appear to be near the proposed water system alignment. County critical areas maps show a number of wetlands on the island, including most of the marine shoreline, and 13 water features (six Type 5 Waters and seven Type 9 Waters) (Jefferson County 1995,2001). A number of the wetlands shown on the County map are in the project area. The County stream map shows one Type 5 Water in the project area, directly north of the entrance to Mystery Bay State Park (Jefferson County 2001). Much of Kilisut Harbor, all of Scow and Mystery Bays, and the portion of Oak Bay adjacent to the SR 116 causeway have been mapped by the County as a FWHA (Jefferson County 1995). This FWHA includes the estuarine wetlands shown on the NWl map. The County SMMP map for Eastern Jefferson County shows that nearly all of the Marrowstone Island shoreline in the project area is designated as Conservancy except for the shoreline zone adjacent to the SR 116 causeway (to the west of the current project area), which is designated as Natural (Jefferson County 1997). 3.2 WETLAND SURVEYS During the wetlands reconnaissance survey, Parametrix (2005a) identified 46 sites with a predominance of wetland vegetation and/or wetland hydrology within the survey area. Wetlands at 7 of theses sites were subsequently delineated in August, 2005 (parametrix 2005b) and February, 2006. No wetlands were identified within the proposed water system alignment for the current project. Wetlands were delineated south of Nordland within and adjacent to the eastern SR 116 roadside ditch that were within the initial water system alignment. This area is not included in the current water system proposal. Selection of the construction methods and the water system alignment that will minimize impacts to these wetlands has not been fmalized at this time. The applicable buffers proscribed by the UDC (~3.6.9.d.(5)) for wetlands identified during the reconnaissance survey vary from 25 to 225 feet (Appendix A). 3.3 STREAMS A small, unnamed stream was delineated north of the entrance to Mystery Bay State Park during the February, 2006 site visit. This stream passes beneath SR 116 via a culvert near the west end of the park and the upstream and downstream ends of the culvert were flagged. The wetted channel was less than 1 foot wide and 4 inches deep approximately 100 feet downstream from SR 116 at the time of the site visit and flow was estimated at less than 5 gallons per minute. It is likely that this stream is ephemeral during late summer. May 2006 1 553-1820-010 LOG ITEM # K1 Page.. ot 13 3-1 e e I Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Jefferson County PUD No. 1 Riparian vegetation along this stream in the project area is dominated by non-native Himalayan blackberry (Rubus armeniacus) and an ornamental rose (Appendix B, Photo 2). Due to the dense riparian vegetation in the state park, it was not possible to determine if there is a surface water connection with the estuarine wetland in Mystery Bay State Park. Given the topography and proximity to the wetland, it appeared likely that there is a surface water connection between this stream and estuarine wetland. This stream would be classified as a Type 5 water by the County (~UDC 3.6.8.a.(3)) and appears to be in the vicinity of the Type 5 water shown on the County stream map (Jefferson County 2001). The standard buffer for Type 5 waters is 50 feet (UDC Table 3.2). 3.4 SHORELINES OF THE STATE During the field investigations, the marine OHWM abutting SR 116 was flagged and surveyed along the southeastern shore of Mystery Bay, the SR 116 causeway at Scow and Oak Bays, and along Kilisut Harbor at Reef Road (Appendix B, Photo 1). Approximately 5,000 If of the proposed water system are within the shoreline zone of marine waters. 3.5 FISH AND WILDLIFE HABITAT AREAS The review of existing information did not identify any FWHAs within the proposed water system alignment. County mapped FWHAs (1995) within the project vicinity are found in the marine waters of Kilisut Harbor and Mystery, Scow, and Oak Bays. PHS data show 3 bald eagle nests within approximately 800 feet of the proposed water system alignment; waterfowl and shorebird concentrations in north and south Kilisut Harbor, Scow, Mystery, and Oak Bays; and cliff habitat along Admiralty Inlet. The PHS data also depicts forage fish spawning beds on many of the beaches along the western shoreline of Marrowstone Island. The PHS data do not show any resident or anadromous fish use of the unnamed stream at Mystery Bay State Park. RECEIVED JHHRSON COUNlY oeD 3-2 LOG ITEM # Cl11 Page~ot3.3 May 20061 553-1820-010 e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County PUD No, 1 4. IMPACT ASSESSMENT 4.1 WETLAND AND WETLAND BUFFER IMPACTS There will be no direct wetland impacts (i.e., clearing, filling, or excavation) as a result of the water system installation proposed for this portion of the project. There will be no discharge of materials or untreated stormwater into wetlands or waters of the state during construction or alterations to wetland hydrology as a result of project installation. Ditches and ditch slopes disturbed for construction will be returned to pre-construction grade following installation of the water line. Wetland buffer impacts from the water system installation will be limited to those areas that are currently regularly maintained (mowed) by County road crews. Routine and ongoing right-of-way maintenance involves a number of vegetation control measures including mowing, herbicide spraying, vegetation removal, tree trimming, grading, and ditch excavation. The proposed project will not result in the clearing of additional buffer vegetation beyond the maintained right-of-way. Staging areas will not be located in naturally vegetated buffers, and to the greatest extent practicable, will be located in existing improved or disturbed areas. 4.2 STREAM IMPACTS Placement of the main along SR 116 will require crossing the Type 5 stream to the north of the entrance to Mystery Bay State Park. The water main will be installed in the ditch bottom (the east side of SR 116) via open trenching in this area, which will be a temporary impact to the channel morphology. Stream impacts. at the work site and downstream will be minimized by constructing when the channel is dry. Following installation of the water main, the ditch bottom and sides and stream channel will be restored to preconstruction grade. No permanent impacts to the stream or to water quality at or downstream of the project site are anticipated. An HPA will be obtained from WDFW and water system installation will comply with all conditions of the HP A. Installation of the water main will require the clearing of approximately 600 square feet of streamside buffer at this site. The standard streamside buffer is 50 feet on each side of the stream and vegetation within approximately 6 feet of the shoulder will be cleared for construction access. This is a temporary impact and no project-related permanent buffer impacts are anticipated. The existing streamside buffer is dominated by dense non-native shrubs which provide limited value as wildlife habitat (Appendix B, Photo 2). The dense shrub canopy would provide some stream shading and organic input but is not a unique or high value habitat type. Himalayan blackberry and the non-native rose are relatively common on Marrowstone Island and the clearing of a relatively small area of streamside buffer for this project is not expected to diminish the function or character of the buffer. There are no records of recent fish use in the unnamed stream and the project area (the SR 116 right-of-way) is not an area that should be enhanced as wildlife habitat due to the proximity of the highway. Also, the buffer area impacted by the water system installation is within an area subject to routine right-of-way maintenance. The buffer within the maintained right-of-way is perpetually disturbed and does not provide a high level of buffer function or habitat value. Installation of the water main will not alter the maintenance of the right-of-way or the existing functions provided by riparian buffers within the maintained right-of-way. Periodic vegetation removal and ditch excavation within the right-of-way will continue regardless of water system installation. LOG ITEM # (~'1 P , 3:- of /} S age_l --~ 4-1 May 2006 I 553-1820-010 e e I Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Jefferson County POO No. 1 4.3 FISH AND WILDLIFE HABITAT AREAS IMPACTS Aside from the impacts to the unnamed stream and buffer described in the previous section, no impacts to FWHAs are anticipated from construction or operation of this portion of the Marrowstone Island water system. Construction timing restrictions will be observed within 800 feet of active bald eagle nests and the WDFW Area Biologist will be consulted prior to construction. 4.4 SHORELINE AND SHORELINE JURISDICTION IMPACTS Approximately 5,000 If of the proposed water main alignment are located within the shoreline zones of Kilisut Harbor and Admiralty Inlet. Water system installation will not include any in-water work or direct impacts to shorelines of the state on Marrowstone Island. Within the shoreline zone, water line installation will occur on the landward side of existing roads except for approximately 50 If of water line at East Beach Road and 50 If at the Mumby short plat. Within the shoreline zone at the Mumby short plat, the water line will be installed within the bed of the existing gravel road. Direct impacts to shorelands vegetation (within 250 feet of the OHWM) will be confmed to the currently maintained right-of-way. No additional vegetation clearing beyond the maintained right-of-way is anticipated for the water system construction. Installation and operation of the Marrowstone Island water system will not degrade shoreline water quality or marine life; contribute to beach erosion or siltation; alter shoreline geohydraulic shore processes; or interfere with normal public use of the shoreline, including alteration of shoreline views or public access. RECEIVED JEffERSON COUNTY OW 4-2 LOG ITEM # t ~ ~ May 20061 553-1820-010 Pag~_~ot 3~ e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County POO No, 1 5. MITIGATION SEQUENCING The following mitigation measures will avoid or ameliorate potential project impacts to wetlands, streams, shorelines, and their buffers pursuant to UDC ~3.6.9.f(l), Mitigation. 5.1 MITIGATION SEQUENCING County, state, and federal regulatory agencies require that mitigation efforts follow this prescribed sequence: · A void impacts altogether by not taking a certain action or parts of an action; · Minimize impacts by limiting the degree or magnitude of the action and its implementation by using appropriate technology, or by taking affirmative steps to avoid or reduce impacts; · Rectify the impact by repairing, rehabilitating, or restoring the affected environment; · Reduce or eliminating the impact over time by preserving or maintaining operations during the life of the action; · Compensate for the impact by replacing, enhancing, or providing substitute resources or environments; and · Monitor the impact and the compensation projects and take appropriate corrective measures. 5.2 AVOIDING AND MINIMIZING IMPACTS The project is designed to avoid and minimize impacts to wetlands, streams, jurisdictional shorelines, and their buffers where feasible. This portion of the project will avoid work in wetlands altogether. The water system alignment has been designed or modified to avoid impacts to aquatic resources. To minimize the risk of inadvertent impacts, sensitive environmental areas and buffers will be clearly marked by a biologist in the field for signing (UDC ~3.6.8g(9) and ~3.6.9d(4)) and fencing during construction. A plan will be developed to control stormwater and sedimentation during construction. Sediment fences will be placed in areas where runoff may impact wetlands and waters of the state. Construction activities will adhere to a site-specific spill prevention, control, and countermeasure plan, including toxin containment, off-site fueling, and equipment cleaning. Construction will also adhere to a drainage and erosion control plan to be prepared for the project that will include best management practices (BMPs) for soil stabilization, control of runoff, and replanting in compliance with the current County stormwater standards. These BMPs address clearing, grading, and storm water management, and for this project include, but are not limited to the following: · Erosion of disturbed areas will be controlled using silt dams, catchments, or erosion control netting, mulch and hydroseeding, and where appropriate (road shoulders), replanting disturbed areas as soon as possible to establish cover vegetation. Disturbed areas will be restored to pre-construction grade · Erosion control devices will be inspected, maintained, and repaired as needed. All on-site erosion control devices shall be inspected at least once every seven days and May 2006 1 553-1820-010 # Page LOG ITEM (C1i . ~a, of 3'; \,__, 5-1 e e I Final Marrowstone Island Water System - Aquatic Resources Impact Assessment Jefferson County POO No. 1 within 24 hours after any storm event greater than 0.5 inches of rain per 24 hour period. · If soil erosion and sedimentation resulting from construction activities is not effectively controlled, the engineer will limit the amount of disturbed area to that which can be adequately controlled. · All pollutants other than sediment that occur on-site during construction shall be handled and disposed of in a manner that does not cause contamination of stormwater. · Any designated wetland and shoreline area will be clearly signed and protected with silt fencing. · Spill control and emergency response plans will be implemented for fueling and concrete activity areas. · The SMMP performance standards for utilities (5.200.2) recommend that where feasible, utilities should be installed underground and within existing rights-of-way. Installation of the Marrowstone Island water system will comply with the SMMP performance standards for underground installation of utilities. · Water main installation will comply conditions of the HP A when constructing in the vicinity of the unnamed stream. · Refueling will only occur at designated refueling sites that are located away from environmentally sensitive areas. · Staging and stockpile areas will be not be located within naturally vegetated sensitive area buffers. · All vehicles operated within 150 feet of any stream or water body will be inspected daily for fluid leaks before leaving the vehicle staging area. Any leaks detected will be repaired before the vehicle resumes operation. When not in use, vehicles will be stored in the vehicle staging area.. 5.3 COMPENSATORY MITIGATION Since the proposed project will have no direct adverse impacts to wetlands or shorelines of the state, no compensatory mitigation is required. RECEIVED JEffERSON COUNTY OeB 5-2 11- Page LOG ITEM l~1 t.o ot hJ, May 20061 553-1820-010 e e Final Marrowstone Island Water System - Aquatic Resources Impact Assessment I Jefferson County POO No. 1 6. REFERENCES Coastal Training Program Washington. 2004. How to determine the ordinary high water mark, course manual. Padilla Bay National Estuarine Research Reserve, Mount Vernon, Washington. 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. Ecology (Washington State Department of Ecology). 1993 . Washington State wetlands rating system, second edition. Publication Number 93-74, Olympia.. Ecology (Washington State Department of Ecology). 1997. Washington State wetlands identification and delineation manual. Publication Number 96-94, Olympia. Coastal Training Program, Washington. 2004. How to determine the ordinary high water mark. Training manual, Washington State Department of Ecology, Olympia. Environmental Laboratory. 1987. Corps of Engineers wetland delineation manual. Technical Report Y-87-1, Environmental Laboratory, Department of the Army, Waterways Experiment Station, Vicksburg, Mississippi. FWS (U.S. Fish and Wildlife Service). 1987. National wetland inventory. Nordland, Washington quadrangle. Portland, Oregon. Jefferson County. 1995. Eastern Jefferson County critical areas fish and wildlife habitat map. Port Townsend, Washington. Jefferson County. 1995. Eastern Jefferson County wetlands map. Port Townsend, Washington. Jefferson County. 1997. Shoreline Management Master Program map, Eastern Jefferson County map. Port Townsend, Washington. Jefferson County (Jefferson County Integrated Data Management System). 2001. Rivers, streams, and shorelines, Eastern Jefferson County Washington map. Port Townsend, Washington. Parametrix. 2005a. Results of Marrowstone Island wetland reconnaissance survey, technical memorandum. Prepared for Jefferson County PUD No.1. Bellevue, Washington. Parametrix. 2005b. Final Marrowstone Island Water System-Phase 1 Wetland Delineation Report. Prepared for Jefferson County PUD No.1. Bellevue, Washington. WSDOT (Washington State Department of Transportation). 2002. The Talent Decision. Environmental Services Division, Olympia, Washington. Available at: <http://www.wsdot.wa.gov/environmentffalentffalentDecision.htm>. Accessed February 22, 2005. May 2006 1 553-1820-010 # Page LOG ITEM ('11 (~\ of ~,3 6-1 e e APPENDIX A Wetland Reconnaissance Survey Memorandum LOG ITEM #~ Page _.1.J..pf ?, 3 e e Parametrix IIiNOtNl5l1iRtNG . PLANNING. ENVIRONMENTAL lI~IEN~E$ 411108th AVENUE NR, SUITE 1800 BELLEVUE, \VA 98004-5571 T. 42.'1. 458 . 6200 F. 425. 458. 6363 'W\\'W~patamttii'X.rom 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: Project Name: 553 - 1820 - 010 (01/03) 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. # Page LOG ITEM ~~ i~ of_.~ e e NWater Line 0.4 , o 0.4 0,8 Miles ti N Approximate wetland reconnaissance survey area, proposed water system for Marrowstone Island. Nordland USGS quad. Figure 1. Wetland reconnaissance project area. # Page. LOG ITEM l~L 1-'{of.32> e e 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 ~3.6.9 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 ITEM "" ~ ~g'3 _" of 33 It e Marrowstone Isl Wetlands .... Ll<eto,< . Potential b. N 0.4 , o 0,4 0.8 Miles Wetland areas identified during July 2005 MalTowstone Island wetland reconnaissance, south portion of the island, Figure 2. Wetland reconnaissance results, south Marrowstone Island. LOG ITEM # l~1 Pag '3 ~.2..k. ot 33 e e Marrows:tone Is: I \IV etlan ds .. Li<e Iy . Potentia I ~ N 0.4 , o 0.4 0,8 Miles Wetland areas identified during July 2005 Marrowstone Island wetland reconnaissance, north portion of the island Figure 3. Wetland reconnaissance results, north Marrowstone Island. LOG ITEM # lct~ Pag'3~llot ~ 3 e e 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. LOG ITEM # (~-=t Pag-3._liot3..3 e e 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/commdevelopmentlcomplanpdfs/compplan2004_ 400dpi_ framEPS.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/mspublviewer.htm?mapset=temp_ esa>. Port Townsend, WA. LOG ITEM # (01 Pag'3~_nof ~~ e e Attachment A Wetlands and Potential Wetlands Identified during the Marrowstone Island Wetland Reconnaissance LOG ITEM # 19.; Pag'3__ ~1-otj3 e e 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 ~3.6.9{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 LikelyWetland 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 II BUFFER (ft) 150/225 50175 25/37 50/75 150/225 25137 50/75 100/150 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 I III III III III II III III IV IV IV IV LOG ITEM # \q, Pag'3~_~ot13 e e 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 ITEM :ag9_~1t~ e e APPENDIX B Photographs LOG ITEM # (Sl Pag'3~_Uut ~3 e e Estuarine wetland waterward of Kilisut Harbor OHWM, west side of Reef Road, Marrowstone Island. Unnamed Type 5 stream and culvert, north end of Mystery Bay SP, west side of SR 116, Marrowstone Island. LOG ITEM # C~I Pag'3._~ot33-