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Home My WebLink AboutSDP2014-00019 JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT UNIFIED DEVELOPMENT CODE TYPE I LAND USE PERMIT APPLICANT: PLEASANT HARBOR MARINA 308913 US HIGHWAY 101 BRINNON WA 98320-9719 DATE ISSUED: September 02,2014 DATE EXPIRES: September 02,2015 MLA NUMBER: MLA14-00056 PROJECT PLANNER: David Wayne Johnson PROJECT DESCRIPTION: STORMWATER PERMIT- Driveway entrance widening, water storage tank clearing to Pleasant Harbor Marina PROJECT LOCATION: Parcel Number 502 152 013, Pleasant Harbor Marina Short Plat, in Section 15, Township 25, Range 02 West, WM, located at 308913 Hwy 101, Brinnon, WA 98320 CONDITIONS: 1.) The applicant shall comply with the Habitat Management Plan prepared by C3 Habitat Corps dated July 17, 2014 and submit a final planting plan prior to final inspection and an"as built"drawing of the installation prior to final inspection of BLD14-00134 and issuance of the CO. 2.) An Engineered Stormwater Plan has been submitted and approved by the Department of Community Development. Once the subject permit has been issued the applicant shall fully implement the provisions of the submitted plan and contact the Jefferson County Department of Community Development to arrange a schedule to inspect the property for plan compliance. A Certificate of Occupancy will not be issued until the Department verifies plan compliance. No clearing for roadways or utilities shall occur on the project site until clearing necessary for the installation of temporary sedimentation and erosion control measures have been completed. 3.) PRIOR TO FINAL BUILDING OCCUPANCY, PROPONENT SHALL SUBMIT A WRITTEN LETTER FROM CRAIG PECK STATING THAT THE STORMWATER FACILITY HAS BEEN CONSTRUCTED IN ACCORDANCE WITH THE REQUIREMENTS OF THE"STORMWATER SITE PLAN" DATED AUGUST 18, 2014. FINDINGS: 1.) The Administrator finds that this application complies with applicable provisions of the Unified Development Code,all other applicable ordinances and regulations,and is consistent with the Jefferson County Comprehensive Plan and Land Use map. 2.) The project stormwater plan has been reviewed by the Public Works Department. 3.) The application was reviewed by the Jefferson County Department of Community Development staff on August 26, 2014 for the potential presence of Environmentally Sensitive Areas (ESAs) under the provisions of the Unified Development Code (UDC). After an initial Geographic Information Systems mapping review and an investigative site inspection, the following ESAs were confirmed to be present on the subject property: Suburban &Aquatic Shoreline Designation; Intermediate Shoreline Slope Stability; Osprey Habitat; Coastal SIPZ. 4.) A Habitat Management Plan has been prepared by C3 Habitat Corp. dated July 17, 2014 to address mitigation to native habitat and vegetation impacts. 5.) Jefferson County determined that this proposal is categorically exempt from review under the State Environmental Policy Act(SEPA) pursuant to WAC 197-11-800(2)(d) &(23). 6.) The site plan as submitted with the Stormwater Permit application on July 17, 2014 has been reviewed for consistency under the UDC, and has been approved by Jefferson County Department of Community Development. Any modifications, changes, and/or additions to the stamped, approved site plan dated September 2, 2014 shall be resubmitted for review and approval by Jefferson County Department of Community Development. 7.) This approval is for a Stormwater Management Permit for clearing and grading of Marina Entrance and Water Storage Tank area only. Any future permits on this site are subject to review for consistency with applicable codes and ordinances and does not preclude review and conditions which may be placed on future permits. 8.) NOTICE: This permit does not excuse the proponent from complying with other local, state, and federal ordinances, regulations, or statutes applicable to the proposed development, but consistent with RCW 90.58. Development pursuant to this permit shall be undertaken subject to the applicable policies and performance standards of the Jefferson County Shoreline Management Master Program and the Jefferson County Unified Development Code. If during excavation or development of the site an area of potential archaeological significance is uncovered, all activity in the immediate area shall be halted, and the Administrator shall be notified at once. The Federal Endangered Species Act rules to protect threatened Chinook and Summer-run Chum salmon became effective on January 8, 2001. Bull trout have been listed as threatened since early 2000. Under the ESA, any person may bring lawsuit against any individual or agency that"takes" listed species(defined as causing harm, harassing, or damaging habitat for the listed species). In addition, the National Marine Fisheries Service can levy penalties. All areas in Jefferson County are included as"critical habitat"for a listed species. Development of property along any marine shoreline, freshwater shoreline, or floodplains could harm habitat if protective measures are not taken. To minimize the potential to damage habitat, all property owners developing adjacent to marine shoreline, freshwater shoreline, or floodplains are advised to do the following: -All development activities should avoid unstable slopes, wetlands, and forested areas near surface waters - Remove minimal vegetation for site development, especially large trees -Allow trees that have fallen into surface waters to remain there - Infiltrate stormwater from buildings and driveways onsite through drywells rather than discharging directly into surface waters or roadside ditches The Federal Bald and Golden Eagle Protection Act requires landowners within 660 feet(1/8th of a mile)of an eagle nest to consult with the US Fish and Wildlife Service. This Eagle Act prohibits anyone from "taking" bald eagles. This federal law defines the term "take"and describes the possible legal consequences when a"take" occurs. Among other actions, "take" includes a disturbance of bald eagles or their habitat. Under federal law a permit may still be required for activities that impact bald eagles or their habitat. Contact the US Fish and Wildlife Service (http://www.fws.gov/pacific/eagle/) to learn more about how this law affects your project. Any individual, group, or agency can bring suit for a listed species"taking", even if you are in compliance with Jefferson County development codes. The risk of a lawsuit against you can be reduced by consulting with a professional fisheries habitat biologist, and following the recommendations for site development provided by the biologist. For more information, contact the National Marine Fisheries Service in Seattle, or the U.S. Fish and Wildlife Service. 9.) See SDP14-00019 for Shoreline Exemption APPEALS: Pursuant to RCW 36.70C,the applicant or any aggrieved party may appeal this final decision to Jefferson County Superior Court within twenty-one(21)calendar days of the date of issuance of this land use decision. 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' . \ \ \ x O 2 I =p• C M F x a, f % x w,. .41 w \ 5 1 N JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT UNIFIED DEVELOPMENT CODE TYPE I LAND USE PERMIT SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT EXEMPTION WASHINGTON STATE SHORELINE MANAGEMENT ACT(RCW 90.58) PROPONENT: PLEASANT HARBOR MARINA 308913 US HIGHWAY 101 BRINNON WA 98320-9719 DATE ISSUED: September 02, 2014 DATE EXPIRES: September 02, 2015 MLA NUMBER: MLA14-00056 CASE NUMBER:SDP14-00019 PROJECT PLANNER: David Wayne Johnson PROJECT DESCRIPTION: Shoreline Exemption - minor clearing and grading for water tank replacement and minor road maintenance without a permit. A Habitat Management Plan has been submitted and approved to mitigation impacts. No work below OHWM. WATERBODY AND/OR ASSOCIATED WETLANDS: PLEASANT HARBOR- HOOD CANAL PROJECT LOCATION: Parcel Number 502 152 013, Pleasant Harbor Marina Short Plat, in Section 15, Township 25, Range 02 West, WM, located at 308913 Hwy 101, Brinnon, WA 98320 FINDINGS: 1.) The Administrator finds that this application complies with applicable provisions of the Unified Development Code, all other applicable ordinances and regulations, and is consistent with the Jefferson County Comprehensive Plan and Land Use map. 2.) See ZON14-00024 for related Stormwater Management Permit. 3.) A Habitat Management Plan prepared by C3 Corp dated July 17, 2014 has been reviewed and approved to address mitigation from habitat and vegetation impacts. 4.) The application was reviewed by the Jefferson County Department of Community Development staff on August 26, 2014 for the potential presence of Environmentally Sensitive Areas(ESAs) under the provisions of the Unified Development Code(UDC). After an initial Geographic Information Systems mapping review and an investigative site inspection, the following ESAs were confirmed to be present on the subject property: Suburban &Aquatic Shoreline Designation; Intermediate Shoreline Slope Stability; Osprey Habitat; Coastal SIPZ. 5.) Jefferson County determined that this proposal is categorically exempt from review under the State Environmental Policy Act(SEPA) pursuant to WAC 197-11-800(2)(d) & (23). 6.) The site plan as submitted with the Shoreline Exemption application on August 18, 2014 has been reviewed for consistency under the UDC, and has been approved by Jefferson County Department of Community Development. Any modifications, changes, and/or additions to the stamped, approved site plan dated September 2, 2014 shall be resubmitted for review and approval by Jefferson County Department of Community Development. 7.) This approval is for a Shoreline Exemption for minor clearing for water tank replacement and road maintenance only. Any future permits on this site are subject to review for consistency with applicable codes and ordinances and does not preclude review and conditions which may be placed on future permits. 8.) NOTICE: This permit does not excuse the proponent from complying with other local, state, and federal ordinances, regulations, or statutes applicable to the proposed development, but consistent with RCW 90.58. Development pursuant to this permit shall be undertaken subject to the applicable policies and performance standards of the Jefferson County Shoreline Management Master Program and the Jefferson County Unified Development Code. If during excavation or development of the site an area of potential archaeological significance is uncovered, all activity in the immediate area shall be halted, and the Administrator shall be notified at once. The Federal Endangered Species Act rules to protect threatened Chinook and Summer-run Chum salmon became effective on January 8, 2001. Bull trout have been listed as threatened since early 2000. Under the ESA, any person may bring lawsuit against any individual or agency that"takes" listed species (defined as causing harm, harassing, or damaging habitat for the listed species). In addition, the National Marine Fisheries Service can levy penalties. All areas in Jefferson County are included as"critical habitat"for a listed species. Development of property along any marine shoreline, freshwater shoreline, or floodplains could harm habitat if protective measures are not taken. To minimize the potential to damage habitat, all property owners developing adjacent to marine shoreline, freshwater shoreline, or floodplains are advised to do the following: -All development activities should avoid unstable slopes, wetlands, and forested areas near surface waters - Remove minimal vegetation for site development, especially large trees -Allow trees that have fallen into surface waters to remain there - Infiltrate stormwater from buildings and driveways onsite through drywells rather than discharging directly into surface waters or roadside ditches The Federal Bald and Golden Eagle Protection Act requires landowners within 660 feet(1/8th of a mile)of an eagle nest to consult with the US Fish and Wildlife Service. This Eagle Act prohibits anyone from "taking" bald eagles. This federal law defines the term "take"and describes the possible legal consequences when a"take" occurs. Among other actions, "take" includes a disturbance of bald eagles or their habitat. Under federal law a permit may still be required for activities that impact bald eagles or their habitat. Contact the US Fish and Wildlife Service(http://www.fws.gov/pacific/eagle/)to learn more about how this law affects your project. Any individual, group, or agency can bring suit for a listed species"taking", even if you are in compliance with Jefferson County development codes. The risk of a lawsuit against you can be reduced by consulting with a professional fisheries habitat biologist, and following the recommendations for site development provided by the biologist. For more information, contact the National Marine Fisheries Service in Seattle, or the U.S. Fish and Wildlife Service. 9.) The Development Review Division finds that this proposal is consistent with Shoreline Master Program Section JCC 18.25.090(6) and is consequently exempt from the substantial development permit(SDP) requirements. Exemptions from the substantial development permit requirements do not exempt a proposed development from compliance with the applicable policies and standards of the Shoreline Master Program or other applicable Federal, State, or local permit or license requirements. CONDITIONS: 1.) The project shall adhere to the Best Management Practices (BMPs)to control stormwater, erosion and sediment during construction. BMPs shall address permanent measures to stabilize soil exposed during construction, and in the design and operation of stormwater and drainage control systems. i' Depart -► o o unity Development Staff c: ... _ : - . . - _ kid I kV VV. 1'I. •1 . - I-•.• a-. • . . • --, ' '-= - • • • - - . • . \\tidemark\data\forms\F_SDP_Exemption_U.rpt 9/2/2014 • • G A. 4 • ' *;-:1,41:1%',A :lit.'s ' • • EROSION AND SEDIMENTATION CONTROL PLAN 1, `>.., • Pleasant Harbor Marina—Entrance Drive Widening July 14, 2014 0 134'1.+ d� j,'! • ONAL A. Construction Stormwater Pollution Plan Elements— will • 1. Mark Clearing Limits— Construction will be limited to the immediate area of the tree removal and clearing for the creation of • the road widening cut slope. Marking of Clearing Limits will be complete by a licensed surveyor prior to • tree cutting. • 2. Establish Construction Access- Construction access will continue to be the drive through the construction area. No change is proposed • for the right side driving surface during the road widening. This will reduce the potential for vehicle • tracking of exposed soils onto the U.S. Highway 101 driving surface or into the marina area. • Temporary construction access may be provided at the well site for the construction vehicles although • earthwork is limited to the excavation for the foundation of the water storage tank. • 3. Control Flow Rates- • Site runoff rates could be expected to change a vegetative cover is removed and replaced by crushed • rock surfaces and ultimately hot mix asphalt pavement. Control of sheet flow velocities over these • impervious surfaces may require control with Straw Mulch (C121),Gravel Filter Berm (C232), or Straw Wattles. Use of gravel filter berm may be effective but concentrating sheet flow to shallow channel flow • with a point discharge should be avoided. Stockpiled straw bales should kept on the site to be • employed to redirect, slow,and/or contain sediment laden sheet flows in the event of a rainfall event of • high intensity. • The flat site where the water storage tank is to be located is not conducive to runoff. The foundation • excavation will contain any runoff during the dry season construction period. • 4. Install Sediment Controls- Runoff from existing impervious surfaces in the construction work area is generally by sheet flow. • Maintaining sheet flow is an important element of erosion and sediment control in this construction • area. Straw Mulch,Straw Wattles,Gravel Filter Berm, and Straw Bales(C230) could be employed in that order of preference. Concentration of sheet flow to shallow channel flow with a point discharge should Ibe avoided. Redirecting sheet flow or shallow channel flow to a temporary Straw Wattle or Straw Bale • enclosure in the upper parking lot will allow sediments to settle out on • It I�-ffrVir I. i • Straw Wattles will be used to contain and redirect any runoff that mi j • :ur at the water storagl to k I site. No concentrated runoff flows are expected from this site. 1 JUL 1 7 2014 • J • 5. Stabilize Soils- Exposed soils should be covered with straw mulch to reduce the potential nor eOrgr MI'Nl�.i I bow • during the wet season construction should be avoided. Excavated an. : . -• . -. Oil • •- .,- -• • until final surface is applied. Covering the work area with a porous geotextile would reduce raindrop • induced erosion and slow surface sheet flow velocities. Covering flatter areas (low surface slope) S • • • • • • subject to sheet flow should be avoided to reduce the potential for creating higher erosive velocities. • Stock piled excavated site materials, if to be reused on site, should be covered with plastic sheeting with the base of the covered pile lined with straw wattles. Final soil grades should be mulched to retain moisture and to reduce potential of erosion. • Disturbed soils at the water storage tank site can be covered with straw mulch to significantly reduce the potential for any runoff. • • 6. Protect Slopes- • Constructed slopes on the site will be limited to the area behind the new wedge curb along the left side of the entrance drive. Plantings and mulch will be placed for final stabilization of the cut slope. Runoff • through the existing vegetation above that cut bank is expected to be minimal. Plastic sheet covering of • the exposed cut slope to prevent rain drop impact erosion could be considered in during a significant • rainfall event. Generally, plastic sheeting on slopes other than stockpiles should be discouraged to avoid induced higher runoff velocities. • • Straw Wattles can be used to limit any runoff from flowing off the flat area of the water storage tank • site. Dry season construction should result in no significant runoff occurring. 7. Protect Drain Inlets- • The drainage along the left side of the drive and the entrance to the culvert that discharges to the • harbor should be protected. Quarry spall Check Dams(C207) in the drainage, straw wattles or gravel filter berm along the drive edge above the ditch,straw bales, and potentially sand bags could be • considered to contain sediments. Porous geotextile at Culvert Inlet Protection (C220)could be staked in • place at the culvert entrance, but care must be taken to avoid excessive flow restriction. • There are no drain inlets at the water storage tank site to protect. • • 8. Stabilize Channels and Outlets- • Avoiding the creation of shallow channel flow with a point discharge from existing sheet flow will be required. Maintaining or creating lower sheet flow velocities at the discharge from impervious surfaces • is a work site imperative. The single channel flow,the ditch leading to the existing culvert, is outside the • immediate work area, however reducing flow velocities in the ditch to assure that any possible • sediments on the drive surface from wheel tracking are allowed to settle is a requirement. Culvert Outfall Protection (C209) is recommended for the discharge area of the existing culvert. • • Installation of the overflow pipe into the drainage course at the water storage tank site should occur • during a period of no runoff in the channel. Armoring the backfill around the pipe should protect the channel from erosion. • • 9. Control Pollutants- • Spills from construction equipment maintenance or fueling should be avoided. Containment contingencies such as compacted berms,forms,wattles should be in place. Clean up materials, equipment, and procedures must be in place and readily available. • 10. Control De-Watering- De-watering is not expected on this work site. • • ID • • • • • • • 11. Maintain Best Management Practices(BMP's)- • Daily and more frequent review of site BMP's will be required on this work site to prevent sediment laden runoff to enter the harbor from any source. Constant attention to the condition and repair of • BMP's during the construction period is required. Having stockpiles of replacement straw wattles,straw • bales, plastic sheeting, and sand bags close at hand is imperative. • • 12. Manage Project- • Constant attention to weather forecasts is required to reduce the potential for erosion. Excavation and • grading activities should not occur during rainfall events. Covering of erodible materials should occur prior to a forecast rainfall event. Creating a schedule that completes the work and stabilizes the site • prior to the wet season is required. • • B. Adjacent Areas • 1. Describe Adjacent Areas- • The work area is adjacent to and abuts to Pleasant Harbor. Natural overland flow and drainage from the • work area site is to Pleasant Harbor. The immediate areas to the south (within 450 feet), north (800 feet), and west(other than U.S. Hwy 101)of the work area are owned by the proponent. Access to the • construction site is owned and controlled by the proponent. Limiting or prohibiting vehicular access • other than construction equipment to the work area is probable for short periods during the • construction. • 2. Describe Downstream Drainage Path- • Runoff is direct to Pleasant Harbor. • C. Environmentally Sensitive Area • • 1. Describe Environmentally Sensitive Areas- • Pleasant Harbor is the only sensitive area adjacent to the work area. • 2. Describe Special Requirements for Working Near Environmentally Sensitive Areas- • Prohibiting sediment laden runoff from leaving the work area and entering Pleasant Harbor is a • REQUIREMENT. Monitoring and modifying BMP's as necessary during all construction activities to accomplish this is a REQUIREMENT. Daily fines for discharge of ANY pollutant into Pleasant Harbor will • be assessed. • • D. Erosion Problem Areas • No specific area of erosion potential has been identified. Control of runoff and site soil stabilization on a temporary and permanent basis is REQUIRED. • • E. Construction Phasing • This construction project will not be phased. It is expected to begin in late Summer 2014 and be completed in early Fall 2014. • • • • • • • • • • • • 1. Construction Sequence- • Tree cutting and removal will begin immediately following issuance of the Stormwater permit. Clearing and stump removal will begin concurrently or following completion of logging. Excavation of the cut • slope and subgrade preparation will begin at the low end of the entrance road to better control runoff, if • any during the construction period. Installation of storm drainage facilities across the upper parking lot • will occur concurrently with logging,clearing, and cut slope excavation to expedite the overall construction schedule. Paving and stabilization of the cut slope is expected prior to the beginning of the • wet season. • • 2. Construction Phasing if proposed)- Construction phasing is not proposed. • • F. Construction Schedule • 1. Provide a Proposed Schedule- • See Construction Sequence. • 2. Wet Season Construction Activities- • No wet season construction is proposed. See Construction Sequence. • a. Proposed Wet Season Construction Activities- • See Construction Sequence. • b. Proposed wet season construction activities for environmentally sensitive areas- • See Construction Sequence. • G. Financial/Ownership Responsibilities • • 1. Identify the property owner responsible for the initiation of bonds and/or financial securities- • Pleasant Harbor Marina • 2. Describe bonds and/or other evidence of financial responsibility for liability associate with erosion • and sedimentation impacts- • Provided by contractor as required by Jefferson County. • H. Engineering Calculations • There are no sediment traps,diversions,waterways, runoff detention calculations for this project area. • • • I � • • • • • • • • • • • S STORMWATER SITE PLAN • Pleasant Harbor Marina—Entrance Drive Re-construction and • Water Storage Tank and Pump Building Construction • July 15,2014 • • 1. Project Overview • The proposed project s consist of the following: • A. Tree removal,clearing, excavation,grading, installation of stormwater collection, conveyance,and • treatment for paving to widen the existing entrance drive to the marina to meet Washington State • Department of Transportation commercial driveway entrance and Brinnon Fire Department minimum safety requirements. • B. Construction of a water storage tank with a diameter of 20 feet and a pump building to house • pressure pumps, pressure tanks, piping, and controls for the pressure pumps and the well pump. The • water tank and pump house are within the Pleasant Harbor shoreline sensitive area. • 2. Existing Conditions Summary • The marina upland was the site of a logging operation in the late 1940's and into the 1960's. That operation created the primary roads that continue to be used today. Additional parking and access • areas were created to serve the marina. The site is a forested hillside with shrub understory sloping • down from US Highway 101 to the shore of Pleasant Harbor. Elevations along US Highway 101 range from approximately 90'to approximately 100'. Approximate average distance from the edge of the highway to the intertidal area is 250' resulting in an average slope of approximately 36 percent. The • location of the proposed water storage tank and pump building is on an old road grade. • 3. Describe Existing Vegetation • • The area of drive reconstruction is primarily the existing entrance drive impervious surfaces. The area of • widening is a forested hillside with shrub understory. As many as two dozen fir trees will be removed. The location of the existing well, proposed water storage tank,and pump building is on an former road • grade with sparse vegetation—see Habitat Management Plan—Appendix A. • • 4. Describe the Existing Soils • The Natural Resources Conservation Service map indicates the soils to be Hoodsport very gravelly sandy • loam—see Appendix B. This soil is moderately well drained and is classified as Hydrologic Group B. • Generally these are coarser grained soils are less prone to erosion and are less likely to remain in • suspension as would more silty soils. Subsoils are very densely compacted and cut slopes can stand vertically—see Geotechnical Report,Appendix C. • • 5. Describe Existing Site Hydrology • The Pleasant Harbor Marina upland slopes from U.S. Hwy 101 to Pleasant Harbor at an average slope of • over 30 percent. The slope is second growth dominated by Douglas Fir. • S S S S • • • • • In general,the existing drives and parking areas drain to the harbor either as non-point overland flow or • in several discharges. The area of proposed reconstruction has no point source discharge. Runoff from the right side of the entrance drive impervious surfaces (pollution-generating impervious surfaces) • flows across the entrance drive as sheet flow and into adjacent down-slope vegetated areas and • ultimately into the harbor. Runoff from the left side of the entrance drive impervious surfaces flows • along the base of the existing cut slope and into vegetated areas before entering Pleasant Harbor as sheet flow. A portion of the forested hillside(0.45 acre)flows to the entrance drive. • • The water storage tank and pump building are sited on a former road grade that has little topographic • relief. Runoff is by sheet flow over a vegetated slope to the shoreline of Pleasant Harbor. 6. Describe Any Excess Noise Levels • The operations of the marina will remain unchanged,thus noise levels are not expected to change. Increases in vehicular traffic are expected to result and could increase the duration of vehicular • generated noise but the noise level is not expected to change. • • 7. Describe Significant Geographic Features and Critical Areas The area of proposed reconstruction and structure replacement are not located in critical areas. The • site is adjacent to Pleasant Harbor and contains slopes that average 36% but have not been defined as a • hazard area. Pleasant Harbor is a water body of local,State, Federal, and International significance. 8. Describe General Vicinity • The site of the proposed reconstruction activity is within the Pleasant Harbor Binding Site Plan. The • marina is in a rural setting but within the Brinnon Master Plan Resort Boundary. Adjoining and nearby • uses are residential and the Washington State Pleasant Harbor Boat Launch. • • Permanent Stormwater Control Plan 9. Describe Developed Site Hydrology • • The Pleasant Harbor Marina site is adjacent to Pleasant Harbor and generally does not require flow • control due to its proximity to surface water discharge. Improvement in water quality discharge is the • objective of site maintenance and repair activities for the drives and parking. • A portion of the forested hillside (0.616 acre)above the entrance drive will continue to flow onto the • entrance drive. The left side of the reconstructed drive(0.151 acre of pollution-generating surfaces)will be combined with the hillside runoff and will be contained and conveyed by new wedge curb. A catch • basin will collect this runoff. The collected runoff will be piped to a StormFilterTM manhole where it will • be treated by four(4)filter cartridges—see Appendix D for Stormwater runoff calculations. Discharge 411 from the new collection and treatment system will be to an existing system of culverts with an outfall to • the harbor. • The water storage tank top and the pump building will drain as sheet flow to the native vegetation on • the slope above the shore of Pleasant Harbor. • • • • • S • 10. Proposed Stormwater Treatment Facilities • As noted above, sheet flow of runoff from the right side of the unchanged existing entrance drive will continue through the vegetated hillside will continue to Pleasant Harbor. The runoff from the top of the • storage tank and the roof of the pump building do not require treatment because those are not • pollution generating surfaces. • 11. Performance Goals and Standards • The required quantity of water to be treated by the StormFilterTM manhole as derived through the use of continuous runoff model recommended by the Washington State Department of Ecology Stormwater • Manual. That flow is 0.081 cfs. • 12. Describe the Flow Control System • No flow control system is required or proposed due to the proximity to Pleasant Harbor. • 13. Describe the Water Quality System • Collected runoff from pollution-generating impervious surfaces will be directed through a StormFilterTM • Manhole. The manhole contains replaceable cartridges that filter the runoff to provide treatment. The • method for deriving that portion of the flow projected to pass through the filters is prescribed in the Stormwater Manual. S • 14. Describe the Conveyance System and Design • Surface runoff from the majority of the replaced or new widened surfaces will be collected,treated, and discharged to Pleasant Harbor. Runoff from pollution-generating impervious surfaces will flow to the • wedge curb along the drive. The gutter line will contain one Type 1 catch basin with vaned grate and • one StormFilter manhole that will collect and provide settling in their sumps. Conveyance between these structures is provided by 12-inch diameter ADS N-12 pipe. Discharge from the StormFilter • manhole will be by 12-inch diameter ADS N-12 pipe at minimum slope of 0.005 foot per foot. The • capacity(greater than 1 cfs)of these piped conveyances is sufficient to carry the flow in excess of the • projected 100-year event(0.50 cfs). • 15. Fill Material • Fill materials will be crushed rock for the drive. Limited use of onsite gravelly sandy material may be ID used as compacted sub-base. • • 16. Methods of Placement and Compaction of Fill Material • Imported crushed material will be dumped and spread by dump truck and formed to grade by dozer for • road bases. Imported trench bedding and backfill will be placed by excavator. • Compaction will be provided by vibrator roller for the drive while a vibrator compactor will compact pipe trench. • • S • • • • • 17. Surfacing Material • Two surfacing materials will be used on the site. Drives will be paved with hot mix asphalt. Shoulders • will be crushed surfacing top course. • • 18. Site Restoration The work area is now classified as impervious pollution generating surface and native vegetation. The • area behind the wedge curb and shoulder material will be graded and planted with native ground cover. • 19. Operation and Maintenance Manual • The StormFilter manhole will be maintained at least on an annual basis under contract through the • manufacturer. • 20. Special Studies • • Not applicable • 21. Other Permits • • Building permit from Jefferson County and Electrical permit from Washington State are required. • Neither are related to runoff. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • APPENDIX A • HABITAT MANAGEMENT PLAN • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6 • • • • • HABITAT MANAGEMENT PLAN • • • • s� �, • - a: • m�' . • • ■ • w • ..- �� S • ° • p • 3+= • / s • • • `° • • • • PREPARED FOR: • PLEASANT HARBOR MARINA • 308913 US HIGHWAY 101 • BRINNON,WASHINGTON 98320 • • • PREPARED BY: • Christy Christensen C3 Habitat Corp. • 10507 W Belfair Valley Road • Bremerton WA 98312 • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • • S TABLE OF CONTENTS • • • • 1.0 PROJECT LOCATION and SITE DESCRIPTION 2 • 2.0 PROJECT DESCRIPTION 3 • 3.0 CRITICAL AREA REVIEW 3 3.1 Department of Natural Resources,Water Type Inventory 3 •• 3.2 National Wetlands Inventory 3 • 3.3 Jefferson County Critical Area and Habitat Mapping 3 • 3.4 Washington DFW Priority Species Review 3 • 3.5 Critical Areas Identification,Onsite Review 7 • 3.6 Hydrologic Assessment 7 • 4.0 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY 8 • 5.0 MITIGATION GOALS 8 • 6.0 PLANTING PLAN AND GOALS 13 • PLANT LIST 13 • 7.0 SUMMARY 13 • • • 0 S • • • • • • • • • • • S • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • • • • • HABITAT MANAGEMENT PLAN • Parcel number Acreage awned S 'T/R Proposed Use • Pleasant Harbor Minor Grading, 502152013 20.2 Marina 15/25N/1W Road Widening, 4110 New Water Tank • • Jefferson County,Washington • May, 2014 • Page 1 • • • 1.0 PROJECT LOCATION and SITE DESCRIPTION • The project is located at 308913 US Highway 101 in Brinnon, Washington. The property is located along • the shores of Pleasant Harbor; a small bay on the Hood Canal in WRIA-17.The property is found in a rural • setting surrounded by forested land with sparsely situated single-family residences.The current land use • is a marina. Pleasant Harbor Marina is located on the west side of the Hood Canal on the Puget Sound. Pleasant Harbor is a deep water harbor with a marina having 285 moorage slips.The parcel extends across • Highway 101 and is approximately 20.2-acres in size and located in Section 15, in Township 25N of Range • 02W of the Willamette Meridian.The focal point of this plan is for the portion of the parcel that is south • of Highway 101 (marina). No formal studies of the property located north of Highway 101 have been • conducted. • No wetlands, streams or eagle nests were found in the project scope area. The upland portion of the marina is mainly forested with an understory of salal, Evergreen huckleberry, sword fern and Pacific • rhododendrons. There are invasive species scattered throughout the site which mainly consist of Scotch • broom and Himalayan blackberry. There is a network of roads that switchback down the moderately • steep slope.The existing road system is partially paved or gravel. The marina has many amenities which include a heated pool, hot tub, a small gift shop with groceries, a • non-ethanol gas and diesel dock and a rental house located on a separate tax parcel adjacent to the large • marina parcel. Currently being constructed is a new restaurant (Bistro) that is replacing an existing • building. • The marina is located in a protected waterway that requires a shoreline setback of 150-feet.This Habitat li • Management Plan (HMP) is being prepared to offset minor impacts to habitat found in the 150-foot • shoreline buffer for work already performed inside the buffer and planned work that will be detailed in • this report. • S • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 S S • • PROJECT LOCATION and SITE DESCRIPTION • • • SITE VICINITY MAP • • • l /F �.._ • 1 • 1 • „ _• • __. ,' . • ,g • • . x • .. • • x �a�A rsl ar:t rn Ple d rt. ';,,c111.111..,15 ' I1;what Ma;cla;: 3 • ,:.• • I Sei44ets 1?aa1 Erate • G alrfy ; e „ • • • IGi • 1 • Duck,....„,, • 1 1 4VK • r �� .. � • • • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • PROJECT DESCRIPTION • S 2.0 PROJECT DESCRIPTION • The applicant is currently constructing a new Bistro Building which is replacing an old building. The new • Bistro Building is staying in the existing footprint of the old building and is not part of this mitigation. In • 2011,the marina did approximately 3,142 square feet of clearing in 4 separate areas but within the 150- foot shoreline setback. No permits were obtained prior to the clearing. New proposed work includes road • widening and clearing for a new water tank; much of which is within the 150-foot shoreline setback.The • total new work area within the 150-foot setback is approximately 3,450 square feet. There will be some • road widening and clearing outside of the 150-foot setback as well. • • 3.0 CRITICAL AREA REVIEW • • 3.1 Department of Natural Resources, Water Type Inventory • The Department of Natural Resources (Water Type Inventory) Forest Practices Activities • Resource Services (FPARS) indicates no onsite streams. There is one stream that enters Pleasant Harbor at the west end. See FPARS Map—Figure 1. • • 3.2 National Wetlands Inventory • The U.S. Fish and Wildlife Service, National Wetlands Inventory(NWI)identifies no landward • wetlands on or within close proximity to the scope area. The nearest inland wetland is • approximately.42-miles to the southeast.There are Estuarine and Marine Wetlands located in the Harbor. An E2USN (Estuarine, Intertidal, Unconsolidated Shore, Regularly Flooded) • wetland extends along the shoreline of Pleasant Harbor and terminates approximately • halfway along the northern shoreline. The remainder of the harbor is classified as E1UBL • (Estuarine,Subtidal, Unconsolidated Bottom)wetland. See NWI Map—Figure 2. 41 • 3.3 Jefferson County Critical Area and Habitat Mapping • The Jefferson County Environmentally Sensitive Areas online mapping system identifies a • fish-bearing stream that outfalls near the west end of Pleasant Harbor and the general area • is within a Seawater Intrusion Protection Zone (SIPZ). Additionally, there is an inventoried • wetland near the mouth of Pleasant Harbor as well as a non-fish stream. See Jefferson • County Environmentally Sensitive Area Map—Figure 3. 3.4 Washington DFW Priority Species Review • The Washington Department of Fish and Wildlife—Priority Habitat and Species Map for the project area and vicinity indicates the following features: Elk Concentration, Northern • Spotted Owl Management Buffer, Eelgrass Meadows, Estuarine Intertidal Wetlands, Pacific • Sand Lance Breeding Area approximately 1,200-feet from site work to the NE,and an Osprey • nest approximately 1,200-feet from the nearest site work. The Eelgrass Meadows are mapped all along the entire shoreline of the marina. See PHS Map—Figure 4. S S • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 S • • • CRITICAL AREA REVIEW • • FIGURE 1. DNR FPARS MAP • ,- • i , II __ • / y�aaQf a 1 1 at t acs f III ,• 1 •• ....,.., .-- ..„..,,,,,...., .to : a • • • • 15 1 ) - • der° • • • • • • • • • • • • • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • CRITICAL AREA REVIEW 5 • • • FIGURE 2. NWI MAP • • ra • • • • • � b / x • ;.. _ \r • • • • • • • • \ y x A ' • • il l • • • • • • • • • • • • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • CRITICAL AREA REVIEW k-,'6 • • • FIGURE 3. JEFFERSON COUNTY ENVIRONMENTALLY SENSITIVE AREA MAP • _ _e_ 1 562= / I 1445 _: l'# F_ 4�_ • 562104.:111 srrz€sxa2a "+ " 50216301 "�. • ; . c+f �x 0} °; a' _ y 56270361+3 510302' ; m„ • 3. '', 30 `{040 �i } • 41,�� 5621 615 5 " `- „i`w "' • 5621 , 1 F 5Q21a'. • b02104015, *ram 31 56Y2 5. 5 s • �A b "` '3 / • • • 2 ' 15 10 ,,� « r mm • F 502152017 �t}ti6 , • '/,''' 5027 16 ' , � 15 a . 50252015..y g. WtiWU i f i a S0216600' • 502°5,20 - _ _�,,,,,- F 61 $Hi. a623 255 „_,., .; 5°3215556°7" ,.'''e''''' a _. ...,.5682'-5 1, * 4 50255' x &,5C42155i02 56216,E 1 5 22 5 • �..,.,,., SC 2155 561 p 5021556b11 5621 I • R 5632`-5562,3 - S621a5644 8 ra. s" ''' 1. 2 502# 1. t .''''' i ; 5652$ 1124 5 $„,-�' z'2 .-. 15.16162 & ,'` 5751015 ( 5621516 . �," € - < 5$321§mi ` 41s"4L63 • --°" Jefferson County J-Map _� I- • 563215563 56245402? {, 502151022 7 1 , 5621554112 l fK 562245'4 5632757+ • • * Calotty Seat • • ac . • Pats Strwains • • ND t • f"01 s. • W�etl.n6 • • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • CRITICAL AREA REVIEW • • FIGURE 4. PHS MAP • Elk & Spotted Owl • • Project Area • Sand Lance • • • • • • 0 • • Osprev • • • • S • 3.5 Critical Areas Identification, Onsite Review • Onsite habitat review revealed Pileated Woodpecker activity, several avian species, red- • tailed hawks, deer tracks and other small mammals. An eagle was observed flying along the • shoreline but no nest trees were seen nor inventoried.Also observed sitting on the dock was • one Great Blue Heron but no Heron Rookeries area inventoried on or near the project area. • No priority habitat will be affected by allowing the proposed site activity due to no significant • trees will be removed and the site will still be heavily vegetated and forested. • 3.6 Hydrologic Assessment • The project scope area has a moderately steep slope that descends from Highway 101 to the • bay. Elevation drop is approximately 100 feet from the highway. Highway stormwater is • directed through the property in a few locations via culverts and ditching.Surface rain water • seeps into the ground where no impervious area exists or filters through dense vegetation. 41 New roadside trenching will mitigate stormwater from road runoff onsite. • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 S • • POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY sue,,,,, • • • The majority of the onsite soils are comprised of HoD—Hoodsport very gravelly sandy loam, • 15 to 30 percent slopes.This is a moderately well drained soil. • 4.0 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY • Impacts from the site clearing that occurred in 2011 include approximately 3,142ft2 of clearing in 4 small • areas within the 150-foot shoreline setback. C3 was shown each area where the clearing took place to • evaluate the impacts to habitat. Most of the clearing took place where slope sides were cut into to widen • area or for access. Minor native vegetation was lost whereas it was evident that invasive species were the 4110 bulk of the vegetative loss. Scotch broom was dominant invasive species removed in 2011. Sala! and Evergreen huckleberry was lost in the other areas along with Himalayan blackberry. Although no major • habitat impacts occurred from the clearing in 2011, newly exposed lose soil could cause sediment to • potentially reach the bay. C3 did assess the downslope area at each clearing location and it is still well • vegetated and therefore it is unlikely that sediment reached the bay. Straw and silt fencing has been • placed for added measure. • New clearing and some road access for the new water tank is planned for the project. The total area for • this activity is approximately 3,450ftz. Once again, no major native vegetation loss will occur as there is • also Himalayan blackberry and Scotch broom in the proposed new site work areas. There will be no • significant tree loss. Combining the 2011 site clearing and new clearing and roadwork, the total area of • impact is approximately 6,592ft2. Because the remainder of the undeveloped portion of the site is very • well forested with a dense understory of mostly native vegetation;C3 concludes that no significant habitat impact did or will occur. Buffer function loss will also be negligible for water quality as the current ground • conditions are excellent for natural biofiltration with good ground cover and rigid vegetation. Site disturbance will be mitigated to the best extent possible to account for the minor impacts. • • 5.0 MITIGATION GOALS • The goal of this HMP is to mitigate and offset impacts from previous site clearing and planned site activity. There is somewhat challenging mitigation options for the site. More specifically,the site is so well forested • and vegetated, replanting or planting enhancement is extremely limited.While walking the site,C3 found • a few areas where invasive species are dominant. Some of those areas are also in the planned clearing • zones. Mainly, there is a stormwater drainage area near the water tank location that is lacking in • vegetation with mainly moss growing on the ground. Because stormwater is draining in this ditch, this • would be an excellent place to plant "streamside" vegetation to help improve water quality or reduce water velocity. The second areas that were observed for potential planting enhancement is a patch of • Scotch broom and a patch of Himalayan blackberry that can be removed and replanted with native species • similar to what is growing adjacent to those areas.The third area is on a different tax lot but also owned • by Pleasant Harbor Marina; this is where a rental house is and the water side of the home has no • vegetation and slope vegetation is invasive Himalayan blackberry.The path to the backside of the house • also has a patch of Scotch broom that can be removed and replanted with native vegetation. The path • needs to stay mostly clear as it is a maintenance access. See following site photos that show the areas described above. • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • MITIGATION GOALS • • ` .` . v • 0 . ,it"ft. , • . *t. `er max • 4s "�: tii T • • �E. • • . • • A \ " • ' " ''' `g .. '• I", • - . • • , . -v= f • ' ' • • • • This is the stormwater drainage area described above. The picture does not show the entire length of • where planting would be beneficial.As shown in this photo,the drainage ditch and top of bank are lacking • in vegetation. Salal, Evergreen huckleberry, and sword fern is growing nearby and would likely establish • well here. • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • MITIGATION GOALS • • I .. "T " k.: ,R- `V {L.K.is, I. a es ^ ` s.�`L k 40r k ,r`V '44 , " ! .4 411i ' *a '.---A a * a, , .* ' a• 4 . ..`` 'if b,. f w ' . . ' > " Y y a` � ~• c:1, � e :+ Y r« - R 1 .: + " •',,, r�Its �• ' •rS r £. a• w ilk 4 • Vie' ►r' �E.... , . III ;,..,. Jor#404- it, . -,..S • "a. '*ale 1�,,y ,',.',#-,,t V !wry r w .cii s • l'w x.," a r..r, #, a s • -. .1, ...,„, .,„! -.,-44 . ,... - , , -• r—mirt ..44... - -4.1 . • "s ue * : k a 7, 4' w%,,, • € • ' r-...:: „ r.. ‘w f i> • :"I S1t r + ' _ 7 Stu fir, �-t� Ww' "."O, Y - -- _ " :. m :. • `•1- t t�- ,. s+„ try' _ >104:,,,* , -.- es w .. '' ri -x - 4 . > .tv t . p ! iffi nr p u `, ,,,4, ,„i y i 94rr_.Vey „►� s� yr,, ' . ",.,W , ' , .i Y• H • • • This photo shows the Scotch broom area that will be removed and replanted with native vegetation. • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • MITIGATION GOALS 11 • • • • t • • • • � m k .,� ,sue; k 2 • • • : ' �� e � ��. • „,�`P Asa-�,; ,a .F ".„.1*:'''''' "a" r s • j�� xa�+o r: .i £ f —� '� � • � � • a 'i $ ' %1 ' ''.!• a .� ,aanv.• # -• - • '" -°'-,-.4.1/4 =4.,i.„ it, ,,,,„,,,,, - ,„.. ...-., .„„roftk ., ., ..„. • --,, f-. .1,0 -., , ,,... , „ , , ,.„,.. , , - - . No . I:v.4,, ;it ,• • • • • • This photo shows the area of Himalayan blackberry that will be removed of both vegetation and debris • and replanted with native vegetation. • • • • • • • • • • • • • • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • MITIGATION GOALS 2 • • • ie O • • • • • • • • a • , • , . x • :' • • • • • • • Pa > ,. , ,,„N, - 4,,,,„ ts.,,,,,,,,,tri , ,...., .- • • . -lt • • • • • This photos shows the water side of the rental house where current blackberry maintenance has occurred • and should be replanted with native vegetation. • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremert on 98312 Phone 360.277.4354 Fax 800.756.0996 • • • PLANTING PLAN AND GOALS • • • 6.0 PLANTING PLAN AND GOALS • Although we were able to quantify the approximate amount of site clearing and planned work area; • quantifying the planting enhancement area is very difficult.The applicant should do their best to match a 1:1 ratio for impact versus new enhanced planting; however, this site and its mitigation challenges may • not be able to meet that criteria. C3 proposes to come back out to the project area and mark the areas • that will be used for planting enhancement with a project representative so that the plan is clear. Once • the invasive species areas are removed,a more detailed planting schematic can be prepared and a better representation of the actual planting area can be calculated. At this time, it is too difficult to produce an • accurate plant quantity for the planting zones. However, the species selection can be made at this time • and is based on what is already successfully growing near the planting zones. Because the site is so well • forested, it also is well shaded in most areas and species adapted to those conditions are growing there • and will be mimicked in the plant list. • Depicting the potential and proposed planting areas on a site plan isn't possible at this time. An"as-built" • will be provided to Jefferson County after plants have been installed.Once the"as-built" is reviewed, it at the County's discretion as to whether mitigation goals have been adequately met. If the County should • determine they have not been adequately met, alternative mitigation measures can be evaluated. • PLANT LIST • Evergreen huckleberry • Salal • Pacific Rhododendron • Sword fern Indian plum • Oregon grape • • 7.0 SUMMARY • The Pleasant Harbor Marina did some minor site clearing in 2011 without permission from Jefferson • County and proposed mitigation in this report will offset those impacts.Additionally,the marina has some additional site work planned. Impacts to the shoreline buffer habitat have been determined to be minimal • from past and planned site work. Essentially, the site is very stable and has excellent existing habitat conditions. Prior to any new site work, Best Management Practices should be followed such as silt fencing • and erosion control. An "as-built" planting schematic will be provided further into the project after • planting enhancement areas have been finally determined and invasive species have been cleared to • better quantify planting area. • Respec ully submitted by: • • f • hristy''ristensen • Senior Biologist • C3 Habitat Corp. • • • • • C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • • • • • • APPENDIX B • SOILS MAP AND INFORMATION • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • A • ° v W W • N 5278720 5278760 5278800 5278840 5278880 5278920 • ° 122°55'18" 122 55 18 m co o •(�Z )=-z • i� '; *, �. • ,.. ... 7 ' V. .,.„:,.....,"" rt,, .., .. :01-40 ,, olp �.CAD :: .. Oa w . . ' . / 0 0 ., 1 ' 4 - wii4 -7 . \,\. 01)tit. ...A.. .. .. : .A. ,,- .. 0 et ci 0 • o , • , 4,fr jot. •i 0 rat � ' I* C i r : ` • N F , .. $01 . • .U.. ... : . : . Ok..." 0. I O o1 • ... N‘,„n 5 j' p� N Crw 5"1 m= �_ N # \ v c C N 3 d• w. 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Gi;- ga ��. it @I it li� i l" s , 1 ; i I e 1 1-1 1 .- 1 i 149 R .2.,._gib... jag 'i I H 1 114 I. 1-,-,1 11€ € la 'tJ I ti r 3,�� li i,„,11, . . .iiillA 1 rol , 1 t:. LL t ,,. '-'�.a/ I. 'iii . 9� T ; I� ill 1 le ' A y$ l' i 4- it fj E A II III i i A 1 1; F a, $ Iy 11 1 ""°"° �� Craig A. Peck 8c e PLEASANT HARBOR MARINA Iltr.is" DETAILS Associates \T " 11111 nw�wu.o E = .� In:o.o o To g4 wr a1s15 �\ (]5] 10.5183•iAX:(]5])]OP-IS2], HABITAT MANAGEMENT PLAN o4e %.,f r Pleasant .:14' A.4,.' ' .. 4",... .k Harbor ;O, J H 1 y < , r,.., ,, , „ , .._ s r- r � Lilac .-:' •-/'",,,.mow"'" «� �„�, � 'fit k POs. cv- PREPARED FOR: 7 PLEASANT HARBOR MARINA 1 \T TI--A' D 308913 US HIGHWAY 101 R` S i BRINNON, WASHINGTON 98320 JUL 1 '1 201" PREPARED BY: fiC ,� �+w�f �'�� Ufa Christy Christensen C3 Habitat Corp. 10507 W Belfair Valley Road Bremerton WA 98312 t C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 TABLE OF CONTENTS 1.0 PROJECT LOCATION and SITE DESCRIPTION 2 2.0 PROJECT DESCRIPTION 3 3.0 CRITICAL AREA REVIEW 3 3.1 Department of Natural Resources,Water Type Inventory 3 3.2 National Wetlands Inventory 3 3.3 Jefferson County Critical Area and Habitat Mapping 3 3.4 Washington DFW Priority Species Review 3 3.5 Critical Areas Identification,Onsite Review 7 3.6 Hydrologic Assessment 7 4.0 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY 8 5.0 MITIGATION GOALS 8 6.0 PLANTING PLAN AND GOALS 13 PLANT LIST 13 7.0 SUMMARY 13 C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 HABITAT MANAGEMENT PLAN Parcel number Acreage Owner S/T/R Proposed Use Pleasant Harbor Minor Grading, 502152013 20.2 15/25N/1W Road Widening, Marina New Water Tank Jefferson County,Washington May, 2014 Page 1 1.0 PROJECT LOCATION and SITE DESCRIPTION The project is located at 308913 US Highway 101 in Brinnon, Washington. The property is located along the shores of Pleasant Harbor;a small bay on the Hood Canal in WRIA-17.The property is found in a rural setting surrounded by forested land with sparsely situated single-family residences.The current land use is a marina. Pleasant Harbor Marina is located on the west side of the Hood Canal on the Puget Sound. Pleasant Harbor is a deep water harbor with a marina having 285 moorage slips.The parcel extends across Highway 101 and is approximately 20.2-acres in size and located in Section 15, in Township 25N of Range 02W of the Willamette Meridian.The focal point of this plan is for the portion of the parcel that is south of Highway 101 (marina). No formal studies of the property located north of Highway 101 have been conducted. No wetlands, streams or eagle nests were found in the project scope area. The upland portion of the marina is mainly forested with an understory of salal, Evergreen huckleberry, sword fern and Pacific rhododendrons. There are invasive species scattered throughout the site which mainly consist of Scotch broom and Himalayan blackberry. There is a network of roads that switchback down the moderately steep slope.The existing road system is partially paved or gravel. The marina has many amenities which include a heated pool, hot tub, a small gift shop with groceries, a non-ethanol gas and diesel dock and a rental house located on a separate tax parcel adjacent to the large marina parcel. Currently being constructed is a new restaurant (Bistro) that is replacing an existing building. The marina is located in a protected waterway that requires a shoreline setback of 150-feet.This Habitat Management Plan (HMP) is being prepared to offset minor impacts to habitat found in the 150-foot shoreline buffer for work already performed inside the buffer and planned work that will be detailed in this report. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 PROJECT LOCATION and SITE DESCRIPTION ,. � � SITE VICINITY MAP `.'tF � Cl} Pleasant Ha;bo- Pleasant Yacht Club;= Harbor Manna t= ii 4 Settlers. a' Heal Estate' 4p'al 6V` Oualny ? ' Consultants ti r 8 k Pe,..„. Stack Point ? *�ott, . 'mot {7' R �t'.. 101 V ah'k tre,s g4b' n 10 ce 6� nxhn rid d ` 4 d Dockabusn River C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 PROJECT DESCRIPTION 3 2.0 PROJECT DESCRIPTION The applicant is currently constructing a new Bistro Building which is replacing an old building. The new Bistro Building is staying in the existing footprint of the old building and is not part of this mitigation. In 2011,the marina did approximately 3,142 square feet of clearing in 4 separate areas but within the 150- foot shoreline setback. No permits were obtained prior to the clearing. New proposed work includes road widening and clearing for a new water tank; much of which is within the 150-foot shoreline setback.The total new work area within the 150-foot setback is approximately 3,450 square feet. There will be some road widening and clearing outside of the 150-foot setback as well. 3.0 CRITICAL AREA REVIEW 3.1 Department of Natural Resources,Water Type Inventory The Department of Natural Resources (Water Type Inventory) Forest Practices Activities Resource Services (FPARS) indicates no onsite streams. There is one stream that enters Pleasant Harbor at the west end. See FPARS Map—Figure 1. 3.2 National Wetlands Inventory The U.S.Fish and Wildlife Service, National Wetlands Inventory(NWI)identifies no landward wetlands on or within close proximity to the scope area. The nearest inland wetland is approximately.42-miles to the southeast.There are Estuarine and Marine Wetlands located in the Harbor. An E2USN (Estuarine, Intertidal, Unconsolidated Shore, Regularly Flooded) wetland extends along the shoreline of Pleasant Harbor and terminates approximately halfway along the northern shoreline. The remainder of the harbor is classified as E1UBL (Estuarine, Subtidal, Unconsolidated Bottom)wetland. See NWI Map—Figure 2. 3.3 Jefferson County Critical Area and Habitat Mapping The Jefferson County Environmentally Sensitive Areas online mapping system identifies a fish-bearing stream that outfalls near the west end of Pleasant Harbor and the general area is within a Seawater Intrusion Protection Zone (SIPZ). Additionally, there is an inventoried wetland near the mouth of Pleasant Harbor as well as a non-fish stream. See Jefferson County Environmentally Sensitive Area Map—Figure 3. 3.4 Washington DFW Priority Species Review The Washington Department of Fish and Wildlife—Priority Habitat and Species Map for the project area and vicinity indicates the following features: Elk Concentration, Northern Spotted Owl Management Buffer, Eelgrass Meadows, Estuarine Intertidal Wetlands, Pacific Sand Lance Breeding Area approximately 1,200-feet from site work to the NE,and an Osprey nest approximately 1,200-feet from the nearest site work. The Eelgrass Meadows are mapped all along the entire shoreline of the marina. See PHS Map—Figure 4. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW FIGURE 1. DNR FPARS MAP I rI Study Area —� 1806404 z 1803409 1 ..,..;_er:„._______ .-5--- }---- V/ /ill', ") 8 Puput Souud l'''''''' / . lsoaasa 1.so 4.�9 J �__ 7■ n ll� U /u -... 1 ' ., 1•1004.•., ,_,,_______.---- ,...ir - 7/1) '-',,!:._, ...,/ / 11..\\:\.:. II C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW 5-, � FIGURE 2. NWI MAP .a > f .y 1 ' i ' t,,,,, ,:,,,r'.,:ii,.;4'4`'",,1,--.41.46.-- - - e,,,,,, . %,, , '.41,r te: . 2 , 74 ''I xn. pw e C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW 6 FIGURE 3.JEFFERSON COUNTY ENVIRONMENTALLY SENSITIVE AREA MAP J 98820020'98824X0`_' 502103016 5021140415 9882005+ 988201•` . 502`0400/ 988200302 50210y323 44 t 502503018 502`r-rIC.22 988200301,. ,},�j 9882001(,.5 502103014 I 502404004 `�' / '3, 12 ;- 968200208 ' 411r' / _.. 5021F}t005 502104054 • .a 988200110 502/03019 50210302' ` " ////// i ' 988X10112/ �\.n 502103020 502104026 988200 .3 �:■ �^ 502104023 ,, 502104045 ^' -F502103003 - _ Q �C 502100025 - 502101021 . j : 1S 502103015 502104014 '!� -''''�15021040t8 / .-" -502104025 ■∎ d f 502103024 f 502104017 5021' 1 •''1" e15 V 988500013 _c_... .�^' ,• .s' 504020 °x 988.5000''.. L 1`L�i(Y. 988500044 ...� �`.. 502451038 �9aaxXx�'•} 902152009 502'520.3 " 502151038 ,J_: q�,_ l 986500049 Wego,, t %"'a. e r 162013 r{ ----- %QA / 906500450 Q 988.E ■1 9&(50:305' 'o ff 2152010 502151034 968ceX.x?i5 4/ 988 502751033 _. i 988500054 988800007 X07 - 988600001 988606008 to f o 907 ' 980600013 958600010 '. _�°-'='/-'11---..,,,5021521. 9886YYOOt2 P ^ 988600031 50 f 502152011' 14 k W860003f l• 1 a 1 988600000 5021520'6 ! I 1 9668040152. . 988800029 7 ,Z 502152015 ' 502158007 —W WIldwood Ln r° n /50215, i S «. � ,1886100 t9 1 ' 3 98800 s G.5 7 s 502155007 a A !� 50'!1$6402 50215t00b t 502,560,0 `Sv215.5008 502155006 4 _ s w�sS?k 502155011 502/55009 155406 1 ■ 502«S5U12 ,,,y,„._ _ -1_.� 502151018 502155903 I 502454049 / 502155013 �.•"�"' ^•, r � '--• 1 152002 5,921ss4t4 4. `. 502,55004 ( 502154124 ::__ ( } s v. ifs _s02,s1004 -",,, .,, � . }Y.. , 502157045 ' � 542451004 70055 / ' 502151007 502151003 {(�1 ad - r-----, 1 sot Jefferson County J-Map to 502155016 502'5'027 502757(22 �.. '�p ?d I 5021550'- ,. + 502156012 Legend -:. S.i2.5°024 Selected Features Towns * County Sex • Rot*Cents-, JC Roads Parcels-H DNR Streams Nr f nn Habits " /, N•Non teen rl spa at Al 14# Non-fest,HoOAx Vaon1 8 f- Ns-Non-feat+#1364.81 Seasonal ▪ S Mwntored Snore/my ■ Wetlands C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW 7 FIGURE 4. PHS MAP � `. Elk&Spotted Owl +:,- te' i �' a °fir ' r. Sand Lance a ., > .R s �•' �� * � tea, .!;:z° -',, -,-- 41,-4-,.--,- :4i*4.-44, -'• - 41. . ..-.1`,/'-:# - ;!i-,1*.,. - =t1-,-°' ;:,.). ' ',. F 93" aw:"3a aE a .-,.,. .,„ -„,, ...i.„7 . , . io, ..�� r fi. �. � .� � ��€ � �� ,' ,� Y ad' y- - �' �� , ., , i @ )4,,,,,---,� ,' „,,,, ,,ti. , ''r x'�: S$ ��a '' L'o �: ', �, r :;, 3.5 Critical Areas Identification, On Woodpecker Review activity,habitat review revealed Pileated Woodpecker activity, several avian species, red- tailed hawks,deer tracks and other small mammals. An eagle was observed flying along the shoreline but no nest trees were seen nor inventoried.Also observed sitting on the.dock was one Great Blue Heron but no Heron Rookeries area inventoried on or near the proect area. No priority habitat will be affected by allowing the proposed site activity due to no significant trees will be removed and the site will still be heavily vegetated and forested. 3.6 Hydrologic Assessment The project scope area has a moderately steep slope that descends from Highway 101 to the bay. Elevation drop is approximately 100 feet from the highway. Highway stormwater is directed through the property in a few locations via culverts and ditching.Surface rain water seeps into the ground where no impervious area exists or filters through dense vegetation. New roadside trenching will mitigate stormwater from road runoff onsite. 03 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY 8 The majority of the onsite soils are comprised of HoD—Hoodsport very gravelly sandy loam, 15 to 30 percent slopes.This is a moderately well drained soil. 4.0 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY Impacts from the site clearing that occurred in 2011 include approximately 3,142ft2 of clearing in 4 small areas within the 150-foot shoreline setback. C3 was shown each area where the clearing took place to evaluate the impacts to habitat. Most of the clearing took place where slope sides were cut into to widen area or for access.Minor native vegetation was lost whereas it was evident that invasive species were the bulk of the vegetative loss. Scotch broom was dominant invasive species removed in 2011. Salal and Evergreen huckleberry was lost in the other areas along with Himalayan blackberry. Although no major habitat impacts occurred from the clearing in 2011, newly exposed lose soil could cause sediment to potentially reach the bay. C3 did assess the downslope area at each clearing location and it is still well vegetated and therefore it is unlikely that sediment reached the bay. Straw and silt fencing has been placed for added measure. New clearing and some road access for the new water tank is planned for the project. The total area for this activity is approximately 3,450ft2. Once again, no major native vegetation loss will occur as there is also Himalayan blackberry and Scotch broom in the proposed new site work areas. There will be no significant tree loss. Combining the 2011 site clearing and new clearing and roadwork, the total area of impact is approximately 6,592ft2. Because the remainder of the undeveloped portion of the site is very well forested with a dense understory of mostly native vegetation;C3 concludes that no significant habitat impact did or will occur. Buffer function loss will also be negligible for water quality as the current ground conditions are excellent for natural biofiltration with good ground cover and rigid vegetation. Site disturbance will be mitigated to the best extent possible to account for the minor impacts. 5.0 MITIGATION GOALS The goal of this HMP is to mitigate and offset impacts from previous site clearing and planned site activity. There is somewhat challenging mitigation options for the site. More specifically,the site is so well forested and vegetated, replanting or planting enhancement is extremely limited.While walking the site,C3 found a few areas where invasive species are dominant. Some of those areas are also in the planned clearing zones. Mainly, there is a stormwater drainage area near the water tank location that is lacking in vegetation with mainly moss growing on the ground. Because stormwater is draining in this ditch, this would be an excellent place to plant "streamside" vegetation to help improve water quality or reduce water velocity. The second areas that were observed for potential planting enhancement is a patch of Scotch broom and a patch of Himalayan blackberry that can be removed and replanted with native species similar to what is growing adjacent to those areas.The third area is on a different tax lot but also owned by Pleasant Harbor Marina; this is where a rental house is and the water side of the home has no vegetation and slope vegetation is invasive Himalayan blackberry.The path to the backside of the house also has a patch of Scotch broom that can be removed and replanted with native vegetation. The path needs to stay mostly clear as it is a maintenance access. See following site photos that show the areas described above. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 MITIGATION GOALS 9 .:. , $� 1..- , 4 . ..- 1 4,, , ,1 , '1 _ . r „. Y i F . J. , y IF, • y� S 1 , r tit •''� 411k +;.f ' ..:, .6 .% ....:0:02.4%„tgle„.. ,,.. . 4 .. ,, ,., . .., ..., . y .„.... -,.... . .. , . . . emu. ., _.,..y.., .. „. i --.. . ' 5.41tris .1,.., A il. .. .. . , ... , _....,,... - ,,,,,. ,..--- , .,,, , . . a , ., • . ,., , ,...,...... 40..., .4111„ 0. - 4*... .--. , . , ;lb,-4, Joe ,., ' ,, ° ,s 7.4tfiti;.:: N 4, as 044100. -b < "r b, 1,,i4,-.10. ' ,t. yia This is the stormwater drainage area described above. The picture does not show the entire length of where planting would be beneficial.As shown in this photo,the drainage ditch and top of bank are lacking in vegetation. Salal, Evergreen huckleberry, and sword fern is growing nearby and would likely establish well here. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 MITIGATION GOALS 10 Mkt } ' • AY" 'v. 4%,4* ei 0 ' 4 . A .p y 1,.. . 1 jot -* { , � r r 4 f e ... � ,, y'yt":... wry 'p, w I R w , .- - ` .t. " '. . ' ,, • g II *, This photo shows the Scotch broom area that will be removed and replanted with native vegetation. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 MITIGATION GOALS 11 1* V a sc r ' j x,.. .' . e#y V a3µ t _ "...- °. •. {,� „,,,44,--; „ t ..,. �; a�.v mil' .. fie i a� ' ..t• � 1.7155 1:4 *. -.:1 i ,}a 11R ."'-a : ....ie `' �� airy y, .� ^, t,cF � . wpR�A .^ a, ,t 4x4• r .. ar"14 . . j{w 1 • .} O' + 'mot ,• � q, ° s x'9 �. y - P ---'004. , -: ..k:- L ,44,'4.'skit ''1,,,z4 ' ;.`"4 ''''rr ''',,, ',*;:-'174..t..S,1'A. *.kr/ ;4_,.‘..'' 14:4,4t t4; Aro i ,.. �,t yam* 4 . 4 ,...-4,01.4,...w.-01,_ ..,..: i...-.,-.,:".„.,,,,..., .-1..„‘.. .,,...e.,..., ,:t...41,41;171,...,....... . ifil _ , ,., ..„.... ......„„,_ , ....,, ..... .f„-. .....% . + ri.. a ',-,A. r .e-'w, .'qty ' ,, .y +s t... , ,Sidi" �. � �` 3 "rF�}m" ' " f R 4 x This photo shows the area of Himalayan blackberry that will be removed of both vegetation and debris and replanted with native vegetation. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 MITIGATION GOALS 12 t *vim *r. f .. r r x m# . . ��," . r to 'gym" . . _ ." - ,,s*� 'Iu`�+ �" 'Myja ■ , "h !f �j A ` °r ' ' _ <„.+u a k. .- .- wt 4 « " ..,..r ., 8, ;y 4 ' + a 0. 3' ARC;* t N ' J "& ii + l , i ,. . sr This photos shows the water side of the rental house where current blackberry maintenance has occurred and should be replanted with native vegetation. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 PLANTING PLAN AND GOALS 13 6.0 PLANTING PLAN AND GOALS Although we were able to quantify the approximate amount of site clearing and planned work area; quantifying the planting enhancement area is very difficult.The applicant should do their best to match a 1:1 ratio for impact versus new enhanced planting; however, this site and its mitigation challenges may not be able to meet that criteria. C3 proposes to come back out to the project area and mark the areas that will be used for planting enhancement with a project representative so that the plan is clear. Once the invasive species areas are removed, a more detailed planting schematic can be prepared and a better representation of the actual planting area can be calculated. At this time, it is too difficult to produce an accurate plant quantity for the planting zones. However, the species selection can be made at this time and is based on what is already successfully growing near the planting zones. Because the site is so well forested, it also is well shaded in most areas and species adapted to those conditions are growing there and will be mimicked in the plant list. Depicting the potential and proposed planting areas on a site plan isn't possible at this time. An "as-built" will be provided to Jefferson County after plants have been installed. Once the"as-built" is reviewed, it at the County's discretion as to whether mitigation goals have been adequately met. If the County should determine they have not been adequately met, alternative mitigation measures can be evaluated. PLANT LIST Evergreen huckleberry Salal Pacific Rhododendron Sword fern Indian plum Oregon grape 7.0 SUMMARY The Pleasant Harbor Marina did some minor site clearing in 2011 without permission from Jefferson County and proposed mitigation in this report will offset those impacts.Additionally,the marina has some additional site work planned. Impacts to the shoreline buffer habitat have been determined to be minimal from past and planned site work. Essentially, the site is very stable and has excellent existing habitat conditions. Prior to any new site work, Best Management Practices should be followed such as silt fencing and erosion control. An "as-built" planting schematic will be provided further into the project after planting enhancement areas have been finally determined and invasive species have been cleared to better quantify planting area. Respec ully submitted by: I 6/1/1/116 hristy 7'ristensen Senior Biologist C3 Habitat Corp. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 INVOICE Date: 8/28/2014 Invoice ID: DCD14SDP14-00019 JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street( Port Townsend, WA 98368 360-379-44501 email:dcd@co.jefferson.wa.us www.ca.jefferson.wa.us/commdevelopment Date Due: BILLING ADDRESS: 9/27/2014 PLEASANT HARBOR MARINA 308913 US HIGHWAY 101 BRINNON WA 98320-9719 SMP Exemption Base 532.00 REMIT TO: Total Amount Due: $532.00 Jefferson County DCD 621 Sheridan St. Port Townsend,WA 98368 Please return the above portion with your payment Permit Number: SDP14-00019 SMP Exemption Base 532.00 Total Amount Due: $532.00 Payment is accepted by cash, check, debit or credit card (Visa, Mastercard, Discover, American Express) To pay by credit card, go to www.co.jefferson.wa.us/commdevelopment,and click on the"Online Credit Card &echeck Payments" link on the left side of the page. (questions: call 360-379-4450) AUG 1 8 2014 EROSION AND SEDIMENTATION CONTROL PLAN t, V . `c V. Pleasant Harbor Marina—Entrance Drive Widening ,� \ t.; 4, 1 r► August 18,2014 A. Construction Stormwater Pollution Plan Elements— 134 $ ''? • 'ATONAL 1. Mark Clearing Limits— t .. Construction will be limited to the immediate area of the tree removal and clearing for the creation of the road widening cut slope. Marking of Clearing Limits will be complete by a licensed surveyor prior to tree cutting. 2. Establish Construction Access- Construction access will continue to be the drive through the construction area. No change is proposed for the right side driving surface during the road widening. This will reduce the potential for vehicle tracking of exposed soils onto the U.S. Highway 101 driving surface or into the marina area. Temporary construction access may be provided at the well site for the construction vehicles although earthwork is limited to the excavation for the foundation of the water storage tank. 3. Control Flow Rates- Site runoff rates could be expected to change a vegetative cover is removed and replaced by crushed rock surfaces and ultimately hot mix asphalt pavement. Control of sheet flow velocities over these impervious surfaces may require control with Straw Mulch (C121),Gravel Filter Berm (C232), or Straw Wattles. Use of gravel filter berm may be effective but concentrating sheet flow to shallow channel flow with a point discharge should be avoided. Stockpiled straw bales should kept on the site to be employed to redirect,slow, and/or contain sediment laden sheet flows in the event of a rainfall event of high intensity. The flat site where the water storage tank is to be located is not conducive to runoff. The foundation excavation will contain any runoff during the dry season construction period. 4. Install Sediment Controls- Runoff from existing impervious surfaces in the construction work area is generally by sheet flow. Maintaining sheet flow is an important element of erosion and sediment control in this construction area. Straw Mulch,Straw Wattles, Gravel Filter Berm, and Straw Bales(C230)could be employed in that order of preference. Concentration of sheet flow to shallow channel flow with a point discharge should be avoided. Redirecting sheet flow or shallow channel flow to a temporary Straw Wattle or Straw Bale enclosure in the upper parking lot will allow sediments to settle out onto the paved surface for removal. Straw Wattles will be used to contain and redirect any runoff that might occur at the water storage tank site. No concentrated runoff flows are expected from this site. 5. Stabilize Soils- Exposed soils should be covered with straw mulch to reduce the potential for erosion. Construction during the wet season construction should be avoided. Excavated and graded areas should be covered until final surface is applied. Covering the work area with a porous geotextile would reduce raindrop induced erosion and slow surface sheet flow velocities. Covering flatter areas (low surface slope) subject to sheet flow should be avoided to reduce the potential for creating higher erosive velocities. Stock piled excavated site materials, if to be reused on site, should be covered with plastic sheeting with the base of the covered pile lined with straw wattles. Final soil grades should be mulched to retain moisture and to reduce potential of erosion. Disturbed soils at the water storage tank site can be covered with straw mulch to significantly reduce the potential for any runoff. Soils must not remain exposed and unworked for more than the time periods set forth below to prevent erosion: • During the dry season (May 1—September 30):7 days • During the wet season (October 1—April 30): 2 days • Stabilize soils at the end of the shift before a holiday or weekend if needed based on the weather forecast. 6. Protect Slopes- Constructed slopes on the site will be limited to the area behind the new wedge curb along the left side of the entrance drive. Plantings and mulch will be placed for final stabilization of the cut slope. Use of erosion control netting or blankets (C122)should be considered to provide additional stabilization. Runoff through the existing vegetation above that cut bank is expected to be minimal. Plastic sheet covering of the exposed cut slope to prevent rain drop impact erosion could be considered in during a significant rainfall event. Generally, plastic sheeting on slopes other than stockpiles should be discouraged to avoid induced higher runoff velocities. Straw Wattles can be used to limit any runoff from flowing off the flat area of the water storage tank site. Dry season construction should result in no significant runoff occurring. 7. Protect Drain Inlets- The drainage along the left side of the drive and the entrance to the culvert that discharges to the harbor should be protected. Quarry spall Check Dams(C207) in the drainage, straw wattles or gravel filter berm along the drive edge above the ditch,straw bales,and potentially sand bags could be considered to contain sediments. Porous geotextile at Culvert Inlet Protection (C220)could be staked in place at the culvert entrance, but care must be taken to avoid excessive flow restriction. There are no drain inlets at the water storage tank site to protect. 8. Stabilize Channels and Outlets- Avoiding the creation of shallow channel flow with a point discharge from existing sheet flow will be required. Maintaining or creating lower sheet flow velocities at the discharge from impervious surfaces is a work site imperative. The single channel flow,the ditch leading to the existing culvert, is outside the immediate work area, however reducing flow velocities in the ditch to assure that any possible sediments on the drive surface from wheel tracking are allowed to settle is a requirement. Culvert Outfall Protection (C209) is recommended for the discharge area of the existing culverts and water storage tank overflow discharge. Installation of the overflow pipe into the drainage course at the water storage tank site should occur during a period of no runoff in the channel. Armoring the backfill around the pipe should protect the channel from erosion. 9. Control Pollutants- Spills from construction equipment maintenance or fueling should be avoided. Containment contingencies such as compacted berms,forms,wattles should be in place. Clean up materials, equipment, and procedures must be in place and readily available. 10. Control De-Watering- De-watering is not expected on this work site. 11. Maintain Best Management Practices(BMP's)- Daily and more frequent review of site BMP's will be required on this work site to prevent sediment laden runoff to enter the harbor from any source. Constant attention to the condition and repair of BMP's during the construction period is required. Having stockpiles of replacement straw wattles,straw bales, plastic sheeting, and sand bags close at hand is imperative. 12. Manage Project- Constant attention to weather forecasts is required to reduce the potential for erosion. Excavation and grading activities should not occur during rainfall events. Covering of erodible materials should occur prior to a forecast rainfall event. Creating a schedule that completes the work and stabilizes the site prior to the wet season is required. Soils must not remain exposed and unworked for more than the time periods set forth below to prevent erosion: • During the dry season (May 1—September 30): 7 days • During the wet season (October 1—April 30): 2 days • Stabilize soils at the end of the shift before a holiday or weekend if needed based on the weather forecast. B. Adjacent Areas 1. Describe Adjacent Areas- The work area is adjacent to and abuts to Pleasant Harbor. Natural overland flow and drainage from the work area site is to Pleasant Harbor. The immediate areas to the south (within 450 feet), north (800 feet),and west(other than U.S. Hwy 101)of the work area are owned by the proponent. Access to the construction site is owned and controlled by the proponent. Limiting or prohibiting vehicular access other than construction equipment to the work area is probable for short periods during the construction. 2. Describe Downstream Drainage Path- Runoff is direct to Pleasant Harbor. C. Environmentally Sensitive Area 1. Describe Environmentally Sensitive Areas- Pleasant Harbor is the only sensitive area adjacent to the work area. 2. Describe Special Requirements for Working Near Environmentally Sensitive Areas- Prohibiting sediment laden runoff from leaving the work area and entering Pleasant Harbor is a REQUIREMENT. Monitoring and modifying BMP's as necessary during all construction activities to accomplish this is a REQUIREMENT. Daily fines for discharge of ANY pollutant into Pleasant Harbor will be assessed. D. Erosion Problem Areas No specific area of erosion potential has been identified. Control of runoff and site soil stabilization on a temporary and permanent basis is REQUIRED. E. Construction Phasing This construction project will not be phased. It is expected to begin in late Summer 2014 and be completed in early Fall 2014. Soils must not remain exposed and unworked for more than the time periods set forth below to prevent erosion: • During the dry season (May 1—September 30): 7 days • During the wet season (October 1—April 30): 2 days • Stabilize soils at the end of the shift before a holiday or weekend if needed based on the weather forecast. 1. Construction Sequence- Tree cutting and removal will begin immediately following issuance of the Stormwater permit. Clearing and stump removal will begin concurrently or following completion of logging. Excavation of the cut slope and subgrade preparation will begin at the low end of the entrance road to better control runoff, if any during the construction period. Installation of storm drainage facilities across the upper parking lot will occur concurrently with logging, clearing, and cut slope excavation to expedite the overall construction schedule. Paving and stabilization of the cut slope is expected prior to the beginning of the wet season. 2. Construction Phasing(if proposed)- Construction phasing is not proposed. F. Construction Schedule 1. Provide a Proposed Schedule- See Construction Sequence. 2. Wet Season Construction Activities- No wet season construction is proposed. See Construction Sequence. a. Proposed Wet Season Construction Activities- • See Construction Sequence. b. Proposed wet season construction activities for environmentally sensitive areas- See Construction Sequence. Soils must not remain exposed and unworked for more than the time periods set forth below to prevent erosion: • During the dry season (May 1—September 30):7 days • During the wet season (October 1—April 30): 2 days • Stabilize soils at the end of the shift before a holiday or weekend if needed based on the weather forecast. G. Financial/Ownership Responsibilities 1. Identify the property owner responsible for the initiation of bonds and/or financial securities- Pleasant Harbor Marina 2. Describe bonds and/or other evidence of financial responsibility for liability associate with erosion and sedimentation impacts- Provided by contractor as required by Jefferson County. H. Engineering Calculations There are no sediment traps,diversions,waterways, runoff detention calculations for this project area. r ' jj 4 i 'f AUG 1 8 2014 STORMWATER SITE PLAN •k-r -r=, , s Pleasant Harbor Marina—Entrance Drive Re-constructi •!° g ? 1,11 4l ;Y ( I,�) Water Storage Tank and Pump Building Constru r August 18, 2014 1. Project Overview 0 134 .� � The proposed project consists of the following: S'IpNAL • Tree removal, clearing, excavation,grading, installation of stormwater collection,conveyance, and treatment for paving to widen the existing entrance drive to the marina to meet Washington State Department of Transportation commercial driveway entrance and Brinnon Fire Department minimum safety requirements. • Construction of a water storage tank with a diameter of 20 feet and a pump building to house pressure pumps, pressure tanks, piping, and controls for the pressure pumps and the well pump. The water tank and pump house are within the Pleasant Harbor shoreline sensitive area. 2. Existing Conditions Summary The marina upland was the site of a logging operation in the late 1940's and into the 1960's. That operation created the primary roads that continue to be used today. Additional parking and access areas were created to serve the marina. The site is a forested hillside with shrub understory sloping down from US Highway 101 to the shore of Pleasant Harbor. Elevations along US Highway 101 range from approximately 90'to approximately 100'. Approximate average distance from the edge of the highway to the intertidal area is 250' resulting in an average slope of approximately 36 percent. The location of the proposed water storage tank and pump building is on an old road grade. 3. Describe Existing Vegetation The area of drive reconstruction is primarily the existing entrance drive impervious surfaces. The area of widening is a forested hillside with shrub understory. As many as two dozen fir trees will be removed. The location of the existing well, proposed water storage tank, and pump building is on an former road grade with sparse vegetation—see Habitat Management Plan—Appendix A. 4. Describe the Existing Soils The Natural Resources Conservation Service map indicates the soils to be Hoodsport very gravelly sandy loam—see Appendix B. This soil is moderately well drained and is classified as Hydrologic Group B. Generally these are coarser grained soils are less prone to erosion and are less likely to remain in suspension as would more silty soils. Subsoils are very densely compacted and cut slopes can stand vertically—see Geotechnical Report,Appendix C. 5. Describe Existing Site Hydrology The Pleasant Harbor Marina upland slopes from U.S. Hwy 101 to Pleasant Harbor at an average slope of over 30 percent. The slope is second growth dominated by Douglas Fir. In general,the existing drives and parking areas drain to the harbor either as non-point overland flow or in several discharges. The area of proposed reconstruction has no point source discharge. Runoff from the right side of the entrance drive impervious surfaces (pollution-generating impervious surfaces) flows across the entrance drive as sheet flow and into adjacent down-slope vegetated areas and ultimately into the harbor. Runoff from the left side of the entrance drive impervious surfaces flows along the base of the existing cut slope and into vegetated areas before entering Pleasant Harbor as sheet flow. A portion of the forested hillside (0.45 acre)flows to the entrance drive. The water storage tank and pump building are sited on a former road grade that has little topographic relief. Runoff is by sheet flow over a vegetated slope to the shoreline of Pleasant Harbor. 6. Describe Any Excess Noise Levels The operations of the marina will remain unchanged,thus noise levels are not expected to change. Increases in vehicular traffic are expected to result and could increase the duration of vehicular generated noise but the noise level is not expected to change. 7. Describe Significant Geographic Features and Critical Areas The area of proposed reconstruction and structure replacement are not located in critical areas. The site is adjacent to Pleasant Harbor and contains slopes that average 36%but have not been defined as a hazard area. Pleasant Harbor is a water body of local, State, Federal , and International significance. 8. Describe General Vicinity The site of the proposed reconstruction activity is within the Pleasant Harbor Binding Site Plan. The marina is in a rural setting but within the Brinnon Master Plan Resort Boundary. Adjoining and nearby uses are residential and the Washington State Pleasant Harbor Boat Launch. Permanent Stormwater Control Plan 9. Describe Developed Site Hydrology The Pleasant Harbor Marina site is adjacent to Pleasant Harbor and generally does not require flow control due to its proximity to surface water discharge. Improvement in water quality discharge is the objective of site maintenance and repair activities for the drives and parking. A portion of the forested hillside (0.616 acre) above the entrance drive will continue to flow onto the entrance drive. The left side of the reconstructed drive (0.151 acre of pollution-generating surfaces)will be combined with the hillside runoff and will be contained and conveyed by new wedge curb. A catch basin will collect this runoff. The collected runoff will be piped to a StormFilterTM manhole where it will be treated by five (5)filter cartridges—see Appendix D for Stormwater runoff calculations. Discharge from the new collection and treatment system will be to an existing system of culverts with an outfall to the harbor. The water storage tank top and the pump building will drain as sheet flow to the native vegetation on the slope above the shore of Pleasant Harbor. 10. Proposed Stormwater Treatment Facilities As noted above, sheet flow of runoff from the right side of the unchanged existing entrance drive will continue through the vegetated hillside will continue to Pleasant Harbor. The runoff from the top of the storage tank and the roof of the pump building do not require treatment because those are not pollution generating surfaces. 11. Performance Goals and Standards The required quantity of water to be treated by the StormFilterTM manhole as derived through the use of continuous runoff model recommended by the Washington State Department of Ecology Stormwater Manual. That flow is 0.081 cfs. 12. Describe the Flow Control System No flow control system is required or proposed due to the proximity to Pleasant Harbor. 13. Describe the Water Quality System Collected runoff from pollution-generating impervious surfaces will be directed through a StormFilterTM Manhole. The manhole contains replaceable cartridges that filter the runoff to provide treatment. The method for deriving that portion of the flow projected to pass through the filters is prescribed in the Stormwater Manual. 14. Describe the Conveyance System and Design Surface runoff from the majority of the replaced or new widened surfaces will be collected,treated, and discharged to Pleasant Harbor. Runoff from pollution-generating impervious surfaces will flow to the wedge curb along the drive. The gutter line will contain one Type 1 catch basin with vaned grate and one StormFilter manhole that will collect and provide settling in their sumps. Conveyance between these structures is provided by 12-inch diameter ADS N-12 pipe. Discharge from the StormFilter manhole will be by 12-inch diameter ADS N-12 pipe at minimum slope of 0.005 foot per foot. The capacity(greater than 1 cfs) of these piped conveyances is sufficient to carry the flow in excess of the projected 100-year event(0.50 cfs). 15. Fill Material Fill materials will be crushed rock for the drive. Limited use of onsite gravelly sandy material may be used as compacted sub-base. 16. Methods of Placement and Compaction of Fill Material Imported crushed material will be dumped and spread by dump truck and formed to grade by dozer for road bases. Imported trench bedding and backfill will be placed by excavator. Compaction will be provided by vibrator roller for the drive while a vibrator compactor will compact pipe trench. 17. Surfacing Material Two surfacing materials will be used on the site. Drives will be paved with hot mix asphalt. Shoulders will be crushed surfacing top course. 18. Site Restoration The work area is now classified as impervious pollution generating surface and native vegetation. The area behind the wedge curb and shoulder material will be graded and planted with native ground cover. 19. Operation and Maintenance Manual The StormFilter manhole will be maintained at least on an annual basis under contract through the manufacturer. 20. Special Studies Not applicable 21. Other Permits Building permit from Jefferson County and Electrical permit from Washington State are required. Neither is related to runoff. APPENDIX A HABITAT MANAGEMENT PLAN HABITAT MANAGEMENT PLAN °4e f. v p '!4 . 40,000e w �rte' r ,° Pieasanr harbor 1), ry .4ir , # s s PREPARED FOR: PLEASANT HARBOR MARINA 308913 US HIGHWAY 101 BRINNON, WASHINGTON 98320 PREPARED BY: Christy Christensen C3 Habitat Corp. 10507 W Belfair Valley Road Bremerton WA 98312 C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800 756,0996 TABLE OF CONTENTS 1.0 PROJECT LOCATION and SITE DESCRIPTION 2 2.0 PROJECT DESCRIPTION 3 3.0 CRITICAL AREA REVIEW 3 3.1 Department of Natural Resources, Water Type Inventory 3 3.2 National Wetlands Inventory 3 3.3 Jefferson County Critical Area and Habitat Mapping 3 3.4 Washington DFW Priority Species Review 3 3.5 Critical Areas Identification, Onsite Review 7 3.6 Hydrologic Assessment 7 4.0 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY 8 5.0 MITIGATION GOALS 8 6.0 PLANTING PLAN AND GOALS 13 PLANT LIST 13 7.0 SUMMARY 13 C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 HABITAT MANAGEMENT PLAN Parcel number Acreage Owner S/T/R Proposed Use Pleasant Harbor Minor Grading, 502152013 20.2 15/25N/1W Road Widening, Marina New Water Tank Jefferson County,Washington May, 2014 Page 1 1.0 PROJECT LOCATION and SITE DESCRIPTION The project is located at 308913 US Highway 101 in Brinnon, Washington. The property is located along the shores of Pleasant Harbor; a small bay on the Hood Canal in WRIA-17.The property is found in a rural setting surrounded by forested land with sparsely situated single-family residences.The current land use is a marina. Pleasant Harbor Marina is located on the west side of the Hood Canal on the Puget Sound. Pleasant Harbor is a deep water harbor with a marina having 285 moorage slips.The parcel extends across Highway 101 and is approximately 20.2-acres in size and located in Section 15, in Township 25N of Range 02W of the Willamette Meridian.The focal point of this plan is for the portion of the parcel that is south of Highway 101 (marina). No formal studies of the property located north of Highway 101 have been conducted. No wetlands, streams or eagle nests were found in the project scope area. The upland portion of the marina is mainly forested with an understory of salal, Evergreen huckleberry, sword fern and Pacific rhododendrons. There are invasive species scattered throughout the site which mainly consist of Scotch broom and Himalayan blackberry. There is a network of roads that switchback down the moderately steep slope.The existing road system is partially paved or gravel. The marina has many amenities which include a heated pool, hot tub, a small gift shop with groceries, a non-ethanol gas and diesel dock and a rental house located on a separate tax parcel adjacent to the large marina parcel. Currently being constructed is a new restaurant (Bistro) that is replacing an existing building. The marina is located in a protected waterway that requires a shoreline setback of 150-feet.This Habitat Management Plan (HMP) is being prepared to offset minor impacts to habitat found in the 150-foot shoreline buffer for work already performed inside the buffer and planned work that will be detailed in this report. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 PROJECT LOCATION and SITE DESCRIPTION SITE VICINITY MAP i? f ock wsi -,, ,,e,•6 .,2 ti Dusty Rd „rpodPeekt. ti iC3 , .„. a6 41, ,a 5 . , .., .14i .44,- B4$4x' — , 1:1., ,,,,,..4., -,.•t' , ,•, , , 4* u ._004 10 es. Pleasant Haft r -.°°,!' Pleasant Yacht Club' , •.,A 6 44tt, 04 Harbor Manna-- 6, L;lac Q Elac47, % Settlers Heal Estate VO'N c Quality Consultants ,,11■ 4§7 . Stack Point > •S I a , ....e, .., . .,- 'er II ..:.. t, ea G., tri Shot o' .., 2 IV I. Suckabusti River --; _. .---,—,,-;,,---------.,--- -4-..,,,-----`,';'.'-' C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800,756.0996 PROJECT DESCRIPTION 3 2.0 PROJECT DESCRIPTION The applicant is currently constructing a new Bistro Building which is replacing an old building. The new Bistro Building is staying in the existing footprint of the old building and is not part of this mitigation. In 2011, the marina did approximately 3,142 square feet of clearing in 4 separate areas but within the 150- foot shoreline setback. No permits were obtained prior to the clearing. New proposed work includes road widening and clearing for a new water tank; much of which is within the 150-foot shoreline setback.The total new work area within the 150-foot setback is approximately 3,450 square feet. There will be some road widening and clearing outside of the 150-foot setback as well. 3.0 CRITICAL AREA REVIEW 3.1 Department of Natural Resources, Water Type Inventory The Department of Natural Resources (Water Type Inventory) Forest Practices Activities Resource Services (FPARS) indicates no onsite streams. There is one stream that enters Pleasant Harbor at the west end. See FPARS Map—Figure 1. 3.2 National Wetlands Inventory The U.S. Fish and Wildlife Service, National Wetlands Inventory(NWI) identifies no landward wetlands on or within close proximity to the scope area. The nearest inland wetland is approximately.42-miles to the southeast.There are Estuarine and Marine Wetlands located in the Harbor. An E2USN (Estuarine, Intertidal, Unconsolidated Shore, Regularly Flooded) wetland extends along the shoreline of Pleasant Harbor and terminates approximately halfway along the northern shoreline. The remainder of the harbor is classified as E1UBL (Estuarine, Subtidal, Unconsolidated Bottom)wetland. See NWI Map—Figure 2. 3.3 Jefferson County Critical Area and Habitat Mapping The Jefferson County Environmentally Sensitive Areas online mapping system identifies a fish-bearing stream that outfalls near the west end of Pleasant Harbor and the general area is within a Seawater Intrusion Protection Zone (SIPZ). Additionally, there is an inventoried wetland near the mouth of Pleasant Harbor as well as a non-fish stream. See Jefferson County Environmentally Sensitive Area Map—Figure 3. 3.4 Washington DFW Priority Species Review The Washington Department of Fish and Wildlife—Priority Habitat and Species Map for the project area and vicinity indicates the following features: Elk Concentration, Northern Spotted Owl Management Buffer, Eelgrass Meadows, Estuarine Intertidal Wetlands, Pacific Sand Lance Breeding Area approximately 1,200-feet from site work to the NE, and an Osprey nest approximately 1,200-feet from the nearest site work. The Eelgrass Meadows are mapped all along the entire shoreline of the marina. See PHS Map—Figure 4. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW 4 FIGURE 1. DNR FPAR MAP Study Area / m # 2s a / , ;180604� m � . �// r'''''.-'2 . 8Pugw goo ail ƒ� \\ \ \ 1 180548C 4 . \ � » < : » w y, , ƒ , . < . . c � ` » , ° . . \ z . �.y C3 Habitat Corp. 10507 W B|fa|rV le Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW FIGURE 2. NWI MAP ` z 4 0 /. Study Area \. . . .. . a . ® /g?. * � / ` • - '\ \ . . d :) e< �� ! . f , .. y yq 2 �r \ � . . « } ^ .. % . v. / , ' 7 :y f I < , � � � � . � � y: . . . . . . \ , 3 ° . . . / » : \ . • 4 N ^ / I" ° a , � , �/ ��. §��.��... �..5 �� . . � �� ::�� :�«��5_7,5.„,-7,7.5„,,,,, �� C3 Habitat Corp. 10507 W Bmm&Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW L,6- ,, • FIGURE 3. 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County Sex • Rural Comers JC Roads '-----' Parcels-H ONR Streams ilvt F Fest tl3114441 N-Non-frsh Ilabeat Np-Non.fish Hamlet Perennot Non-frsh Habitat Seasonal /sot S•inwenioneel Shorekna 1 MI Wetlands C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 CRITICAL AREA REVIEW 7 FIGURE 4. PHS MAP Elk&Spotted Owl IE ''' ,.' \if Project Area ,, Sand Lance gr re a rotfi-A- ssi �5 � i"� map � E si t ; 4 a 'fir-7 �.*' ,: `a A ` ' k 3.5 Critical Areas Identification, Onsite Review Onsite habitat review revealed Pileated Woodpecker activity, several avian species, red- tailed hawks, deer tracks and other small mammals. An eagle was observed flying along the shoreline but no nest trees were seen nor inventoried.Also observed sitting on the dock was one Great Blue Heron but no Heron Rookeries area inventoried on or near the project area. No priority habitat will be affected by allowing the proposed site activity due to no significant trees will be removed and the site will still be heavily vegetated and forested. 3.6 Hydrologic Assessment The project scope area has a moderately steep slope that descends from Highway 101 to the bay. Elevation drop is approximately 100 feet from the highway. Highway stormwater is directed through the property in a few locations via culverts and ditching.Surface rain water seeps into the ground where no impervious area exists or filters through dense vegetation. New roadside trenching will mitigate stormwater from road runoff onsite. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY 8 The majority of the onsite soils are comprised of HoD—Hoodsport very gravelly sandy loam, 15 to 30 percent slopes.This is a moderately well drained soil. 4.0 POTENTIAL IMPACTS OF PROPOSED SITE ACTIVITY Impacts from the site clearing that occurred in 2011 include approximately 3,142ft2 of clearing in 4 small areas within the 150-foot shoreline setback. C3 was shown each area where the clearing took place to evaluate the impacts to habitat. Most of the clearing took place where slope sides were cut into to widen area or for access. Minor native vegetation was lost whereas it was evident that invasive species were the bulk of the vegetative loss. Scotch broom was dominant invasive species removed in 2011. Salal and Evergreen huckleberry was lost in the other areas along with Himalayan blackberry. Although no major habitat impacts occurred from the clearing in 2011, newly exposed lose soil could cause sediment to potentially reach the bay. C3 did assess the downslope area at each clearing location and it is still well vegetated and therefore it is unlikely that sediment reached the bay. Straw and silt fencing has been placed for added measure. New clearing and some road access for the new water tank is planned for the project. The total area for this activity is approximately 3,450ft2. Once again, no major native vegetation loss will occur as there is also Himalayan blackberry and Scotch broom in the proposed new site work areas. There will be no significant tree loss. Combining the 2011 site clearing and new clearing and roadwork, the total area of impact is approximately 6,592ft2. Because the remainder of the undeveloped portion of the site is very well forested with a dense understory of mostly native vegetation;C3 concludes that no significant habitat impact did or will occur. Buffer function loss will also be negligible for water quality as the current ground conditions are excellent for natural biofiltration with good ground cover and rigid vegetation. Site disturbance will be mitigated to the best extent possible to account for the minor impacts. 5.0 MITIGATION GOALS The goal of this HMP is to mitigate and offset impacts from previous site clearing and planned site activity. There is somewhat challenging mitigation options for the site. More specifically,the site is so well forested and vegetated, replanting or planting enhancement is extremely limited.While walking the site, C3 found a few areas where invasive species are dominant. Some of those areas are also in the planned clearing zones. Mainly, there is a stormwater drainage area near the water tank location that is lacking in vegetation with mainly moss growing on the ground. Because stormwater is draining in this ditch, this would be an excellent place to plant "streamside" vegetation to help improve water quality or reduce water velocity. The second areas that were observed for potential planting enhancement is a patch of Scotch broom and a patch of Himalayan blackberry that can be removed and replanted with native species similar to what is growing adjacent to those areas.The third area is on a different tax lot but also owned by Pleasant Harbor Marina; this is where a rental house is and the water side of the home has no vegetation and slope vegetation is invasive Himalayan blackberry.The path to the backside of the house also has a patch of Scotch broom that can be removed and replanted with native vegetation. The path needs to stay mostly clear as it is a maintenance access. See following site photos that show the areas described above. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 MITIGATION GOALS 9 t: ,ti i. R I t . , , m tor._ VIP ,, '` -� ", ." r ,may *i, t. " p' 4 °` !74 ?S. ,r 1.,1. `ti, i This is the stormwater drainage area described above. The picture does not show the entire length of where planting would be beneficial.As shown in this photo,the drainage ditch and top of bank are lacking in vegetation. Salal, Evergreen huckleberry, and sword fern is growing nearby and would likely establish well here. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 • MITIGATION GOALS 10 .r . 8 4 M r 49 x ' , 's . t *tqk . {i j + am 1 404" ' ,:" ' Y P 4 I` f w ',IN/I,' 2 I 4. .y 1 'N. :.+ f a. 4. r r .. a. '' ''''' 1 s#,' 't'''''''14. . 'tle''''!' 1' '.:'4*.Lir 1*' ' il:.,': r , . s,� a "a, t w %t a� . ^94. <�,. ,� s a't .# m • 4 This photo shows the Scotch broom area that will be removed and replanted with native vegetation. 03 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 MITIGATION GOALS 11 i i :' r °,�S"'.r 'fit � � ¢g�, ' ♦ � .w ..t ; , s `.', r! fC+j1€ +°. 'c"' ' *. .7.-Nit..-:;i4;;;...,..!..., +,.. '.( . 31::•"*.:**:'-' g*. v..R'l • � i �f* Y t ',; Q ' .t-., ,p5k s �" .s. ; mot_ C '`.. rr #; } 't W .�; ;it w 0. P.r aX ' ° .4„...,,,,,.;:2 X a d 7 a S' � . 9w'�.Ar .:.. .. x t K.y ��{, y� t , fs � �� s ��'-- -4,,\+,',....p,!?� - x y t.„--,,,„,--, 1 ;i'�cg��i�' ye" �. .�'"" �%,„,,,,,,,,,,, - *t. 'Aft.4 :• - ''.7. ' -- * ‘...* i`t• '.'” ■ ' itv,.„'W-4,T.c.'" °- ti*":N -A. ,-.,iet.. it.f..,:ioof * \-,:ir- -N ;:-..,?-1, ,., ,... ...:-..,,,—; ,,,. . \:„ „,, „„, , ,,....,„ -s.ttt ,.... .., #,'+ {r^ °n { This photo shows the area of Himalayan blackberry that will be removed of both vegetation and debris and replanted with native vegetation. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 MITIGATION GOALS 12 p , , 9 *I.' **II°' ' '''' . .t'' ''.. ..?,t,44,4k,4:7. : .4.,,. 4 . , ' ' '1./k' ilk, *.**4'''',"'* '''* .2:14-.4;44: iolity "7; .4■0* 4' , 7,4 7 , 414144 irk; ' ,e: ,,,,,11""*" '.0,440eK0-4 : ' . 1... ,,,,F ..,... 1.,... .:. _ 2�� $.1 „. -4 -. u k #4t..;� ,� „�*s„`> -- * ." .. tea.;`'"�� ,44 .„., N, V .P�.a « _ y a - � �.� is �• ,0# • Z Yp} t ' ply tt *,�wt , 4 1 i. r r r •r e' ti 'dbr�4' This photos shows the water side of the rental house where current blackberry maintenance has occurred and should be replanted with native vegetation. C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 PLANTING PLAN AND GOALS 13 6.0 PLANTING PLAN AND GOALS Although we were able to quantify the approximate amount of site clearing and planned work area; quantifying the planting enhancement area is very difficult.The applicant should do their best to match a 1:1 ratio for impact versus new enhanced planting; however, this site and its mitigation challenges may not be able to meet that criteria. C3 proposes to come back out to the project area and mark the areas that will be used for planting enhancement with a project representative so that the plan is clear. Once the invasive species areas are removed, a more detailed planting schematic can be prepared and a better representation of the actual planting area can be calculated. At this time, it is too difficult to produce an accurate plant quantity for the planting zones. However, the species selection can be made at this time and is based on what is already successfully growing near the planting zones. Because the site is so well forested, it also is well shaded in most areas and species adapted to those conditions are growing there and will be mimicked in the plant list. Depicting the potential and proposed planting areas on a site plan isn't possible at this time. An "as-built" will be provided to Jefferson County after plants have been installed. Once the "as-built" is reviewed, it at the County's discretion as to whether mitigation goals have been adequately met. If the County should determine they have not been adequately met, alternative mitigation measures can be evaluated. PLANT LIST Evergreen huckleberry Salal Pacific Rhododendron Sword fern Indian plum Oregon grape 7.0 SUMMARY The Pleasant Harbor Marina did some minor site clearing in 2011 without permission from Jefferson County and proposed mitigation in this report will offset those impacts.Additionally,the marina has some additional site work planned. Impacts to the shoreline buffer habitat have been determined to be minimal from past and planned site work. Essentially, the site is very stable and has excellent existing habitat conditions. Prior to any new site work, Best Management Practices should be followed such as silt fencing and erosion control. An "as-built" planting schematic will be provided further into the project after planting enhancement areas have been finally determined and invasive species have been cleared to better quantify planting area. Respec ully submitted by: 1/1/ 11416 hristy Tristensen Senior Biologist C3 Habitat Corp. III C3 Habitat Corp. 10507 W Belfair Valley Rd Bremerton 98312 Phone 360.277.4354 Fax 800.756.0996 APPENDIX B SOILS MAP AND INFORMATION 0 Tr m Co M F,- ,:r 7 OZ68LZS 0888LZS O488LZS 0088LZS 09L8LZS OZLBLZS CO .,6S.4SoZZl _ .- � .69,PS oZZI N O CD m a o cs,c, :sit-'-,'. 41,„r Lp Tr?.... x. co •^ * N 4 oO a. ` 1' ; lk a co " ? o N a in N N (A 0. 7 d O O N 7 1 ra { ' V p .� a ` < y; 20 o �.> v f6 o +djp °o o co z 0 0 TD" , o r 0 � Oifi*,;it � �.,- .,gyp -, ' o a�'i O m cn d'>� y;, w, „w.a`.: fin:.. X Q m m u) 41a * * (0 V ' ' . 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Ua5 o E Z, as 0 co o Z `� -0 Y° o C o a N E o c c 0 a) U E 0 c 2 0 0- o c a o o o c C m - -c . i ° 2 a) o N co c O Z E. 0 >, w -00 a) 0 j - 0 a) > N a'C-. a) CQ 0 N E d•o fl.CD a z N Cl) O N p a) G w a c E > C CU 5 0 E C EL > o 0 ,CO - o m0) c o =0ta c ao > 0m p o'vmo -o � m F- 2, O .0 N z" cn -0 < @ io o O a a 0 N Cl) a) N co> ?,E CO a> c C 2 5 a m •E' •L co a) E , C NL N co U 'O 7- 7., (/) N N oaa) Ina a O CU -, c) V) 0 0 0 o V) > — C .0 a) E@ E c H W E av0) a E a) u) 0 F-- w v) 0) 0 H c0).= o O >, C L co 1E 0 u) as >..-75- a) a) 0 m < a) (0 > N co m a Uw 0U c 0) N p N T CO a) 0 o. c C0 a) 03 n U t Z CL Q T ` a) C 2 w -° 'o co cu O O ' w ur a) 2 O O 2 co a io cn E 76 o re a co Li) 11. cc c LL _ O c tr> a) N co N N O O a) O L d 0 t � 0 C f0 cn a1 O u) > O c 0 co O U 2 v) 0 K E D 2 3 J CO 0 CO LL Z $ } 1 o ( �' W a . r • w N + co (7 a 3 F- W J aO a Q o co Cn to a `m 0 E O o 75. a O p - 0. m a a O a >, o `o a, m ' c cn >, a) o- m _ 2 LL 3 T N C > N C - V a N O C O E2 N a O C > .0 O O O co f2 < co " m m U 0 0 U J J 2 > d ce Co cn u) Co ( co cn cn C C CD a c d w {0 a) o a — a ® + 5 • 0 4 C OO © > + . . Ill A 4, $ III CF �o m L Q ❑ Cl) __ 0 c 0 0 z c) oil Soil Map-Jefferson County Area,Washington Building Replacement Map Unit Legend Jefferson County Area Washington(WA631) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI HoD Hoodsport very gravelly sandy loam, 15 to 8.6 64.6% 30 percent slopes Subtotals for Soil Survey Area 8.6 64.6% Totals for Area of Interest 13.3 100.0% USDA Natural Resources Web Soil Survey 6/2/2013 Conservation Service National Cooperative Soil Survey Page 3 of 3 APPENDIX C GEOTECHNICAL REPORT PERRONE CONSULTING, INC., P.S. Geotechnical& Underground Engineering 11220 Fieldstone Lane NE Bainbridge Island,Washington 98110 Tel:206-778-8074 Fax:206-780-5669 www.perroneconsulting.com March 11, 2014 Mr. Paul Hospelhorn Statesman Corporation 7370 Sierra Morena Blvd. S.W. Calgary, Alberta T3H 4H9 Canada Subject: Geotechnical Engineering Consultation Pleasant Harbor Marina Water Tank Brinnon, Washington Perrone Consulting Project#13114 Dear Mr. Hospelhorn: This letter report presents our geotechnical engineering recommendations for the proposed water tank at the Pleasant Harbor Marina in Brinnon, Washington. The purpose of this investigation was to evaluate site conditions and provide geotechnical engineering recommendations for the tank foundations. These services were provided as an addendum to our June 25, 2013 contract. Site and Project Description We understand that the project consists of constructing a 20 ft diameter by 10 ft tall concrete water tank supported by a 12-inch thick concrete slab. The water tank site is located near the existing water supply well at the north end of the paved parking area as shown in Figure 1. The tank site was previously benched into the east facing hillside at elevation 46 to create an approximately 35 ft wide relatively level area for an asphalt paved driveway that is now partially buried by about 1 to 3 ft of fill. From the tank site the hillside generally slopes up to about elevation 56 at about 1 H:1 V (horizontal to vertical) then at 2H:1V to SR-101 at elevation 100 ft. The hillside below the tank site slopes down at about 2H:1V to elevation 36 and then at 1.5H:1 V to the shoreline at elevation 10. We observed heavy stormwater flows in two drainage swales down the hillside to the north and south of the tank site (see Figure 1). The northerly flows were channeled across the old roadway by earthen dikes. The southerly flows were collected in a buried culvert under the pavement which discharged onto the slope below the tank site and has incised a 4 ft deep erosion channel at the outlet. We understand that these drainage channels have existed for about 40 years. We noted about a 4 to 6- inch settlement trough in the existing pavement above the buried culvert. The slopes above and below the tank site are heavily vegetated with Douglas fir and cedar trees with an understory of sword ferns and salal. The trees are generally up to about 2 ft diameter and straight trunked. We did not observe any evidence of slope instability above or below the tank site. Subsurface Conditions Our site reconnaissance on March 6, 2014 revealed glacial till soils exposed in the slopes above and below the tank site. In addition we noted loose fill covering most of the tank site. We anticipate that the fill is thicker on the outboard edge (east side) of the benched site area and likely extends some depth below the asphalt pavement elevation. The glacial till consisted of very dense, gray, moist silty sand with gravel and cobbles. We did not observe groundwater seeps or springs on the slopes immediately above or below the tank site. C:\Projects\13114 Pleasant Harbour Septic Drainfield\70 Reports\Water Tank\Hospelhom_031114.docx Statesman Corporation March 11, 2014 Page 2 of 3 Conclusions and Recommendations The proposed site generally appears suitable for siting the water tank. We recommend removing the existing fill and asphalt pavement from beneath the tank and placing the foundation on undisturbed, dense glacial till or on compacted structural fill. In addition, we recommend removing the loose fill on the west side of the site to expose the near vertical dense native glacial till cut. The vertical cut should be buttressed with compacted structural fill placed at 2H:1V or with a retaining wall system such as a rockery wall or cast-in-place concrete wall. Retaining wall design recommendations can be provided when the wall layout details are finalized. The on-site glacial till is moisture sensitive due to its high silt content but it is suitable for use as structural fill provided it is placed at moisture contents near optimum to permit proper compaction. These soils should be free of organic debris and roots, and the cobbles and boulders larger than 3 inches should be removed. Reuse of the on-site soil and placement of compacted structural fill will require full time inspection and testing during earthwork to insure that deleterious and unsuitable material is removed and that the structural fill is properly compacted. Glacial till will be difficult to impossible to properly place and compact as structural fill during wet weather conditions. Therefore, if these soils will be used as structural fill, then the work should be done during drier weather periods. In wet weather conditions we recommend using an all-weather fill consisting of a well graded sand and gravel with less than five percent of the material passing the No. 200 sieve (U.S. Standard Sieve sizes). Structural fill material should have a maximum particle size not exceeding 3 inches. All fill should be placed in uniform, horizontal layers not exceeding eight inches in loose thickness and compacted to 95% of maximum dry density (ASTM D1557). If subgrade or fill soils become loosened or disturbed, the Contractor should over excavate to expose dense, undisturbed soils and place properly compacted fill. The proposed tank foundation should have a minimum embedment of at least 18 inches. If loose, wet, or disturbed soils are encountered at the foundation subgrade, these soils should be removed to expose undisturbed bearing soils, and the resulting over excavation should be backfilled with lean concrete or compacted granular structural fill. The base of all excavations should be dry and free of loose soil at the time of concrete placement. The estimated total and differential settlement of foundations designed and constructed as recommended above should not exceed 1/2 inch and 1/4 inch respectively. Foundation settlement should occur as the loads are applied. It appears that the existing ground subsidence above the buried storm drain culvert was caused by consolidation of loose trench backfill but there is a possibility that some settlement may have occurred by soil erosion due to a corroded pipe. Therefore we recommend removing the existing buried stormwater culvert and replacing it with a new pipe. The pipe outlet should discharge on very dense, gray glacial till that is protected from erosion with small rip rap. We recommend regrading the dike along the northern channel so that its slopes are 2H:1V or flatter and with a crest elevation that can accommodate peak storm run-off flows. The native glacial till compacted to 95% maximum dry density(ASTM D1557)could be used for this purpose. Recommendations for Additional Services Once the locations and height of the proposed retaining wall is determined, we should provide retaining wall design recommendations including suitable wall types, allowable bearing pressures, lateral earth pressures and specifications for wall backfill and drainage. We also recommend that you retain us to observe the tank and retaining wall subgrades prior to placement of structural fill or foundations. (*PERRONE CONSULTING, INC., P.S. Statesman Corporation March 11, 2014 Page 3 of 3 Limitations Within the limitations of scope, schedule and budget, the analyses, conclusions, and recommendations presented in this report were prepared in accordance with generally accepted professional geotechnical engineering principles and practice in this area at the time this report was prepared. We make no other warranty, either express or implied. These conclusions and recommendations were based on our understanding of the project as described in this report and the site conditions as observed at the time of our site reconnaissance. If there is a substantial lapse of time between the submission of this report and the start of construction at the site, or if conditions have changed due to natural causes or construction operations at or adjacent to the site, or appear to be different from those described in our report, we recommend that we review our report to determine the applicability of the conclusions and recommendations considering the changed conditions and time lapse. Additional guidance about this geotechnical report can be found in Appendix C to this report, "Important Information about Your Geotechnical Engineering Report." We appreciate the opportunity to provide geotechnical engineering services for this project. If you have any questions or need additional information, please contact us. Very Truly Yours, PERRONE CONSULTING, INC. P.S. T I.Pkt 13/11/2014 Z47.:1::- 761° ell : ,_ ,,,,,f It_ Vincent J. Perrone, Ph.D., P.E. Principal Engineer Attachments: Figure 1 —Site Plan "Important Information about Your Geotechnical Engineering Report" 53)PERRONE CONSULTING, INC., P.S. 1 .+r as_ o 0_ as H '78 rrnn O Z p Z - 1, _ 0 N V N C 1 '• ';IC LC1/51 1— i'l,'%11.lk;it:;5 Hil, .T .w 42Q� U L LO Cil co V, 11,,i\l‘,. . () cn co a) N.Ise\ . ,Q t \\1t „ N . i / J -.4t‘ !I te,t �4 ..� , U iii, .Y\\ ; \\,,,,� \m i 1 , d `,tS '\\ ft In tt\+ (1�� Ott , aaae*. >tiaa ti II Ott t>� t�t� 4 < t�`i-� x j t �aa,�"`. `a v Cl)Li �li�7"�►\ %\.t. VS %Ni t ,."+�? '- --ma y,.4'%$`,4a***".*y"o \� Q NA ht; t #y am 'ti'h� " L J., *, - , : , \ '''''.,:'- E Li, e N }} ▪ ,� z z ci 6- k 4 ti:'s r''1 c\1,' a �'4 a ca �� t‘.3,3,1t'.14"NA%t tl ga$'aa; \ti's ' \ �4 a �� '. ‘‘,4"" � `h et. �t ■ Y ,,* ".M i. *�� , ., a, a r , ! ‘,,v;.%� ,, A. ''tae'' a } ! .,,°� ' O rtg�,b,t � as �' t �`a ▪ t `. z Ntt\\ M a t,a ' ; w.. ;�. '} ,1 .,, Li \ N>4. N %\ ', ■ a a w� ` „„a• % \ t a\ a ` " ati c a a N� V".1.5`',4:5%' tt-5 ,' �s• wti. - - 1 __. t .,, t Important Information about Your Geotechnical Report Subsurface problems are a principal cause of construction delays, cost overruns, claims, and disputes. While you cannot eliminate all such risks, you can manage them. The following information is provided to help. Geotechnical Services Are Performed for elevation,on,conhgu r anon, location,orientation,or weight of the Specific Purposes, Persons, and Projects proposed structure, Geotechnical engineers structure their services to meet the specific needs of • composition of the design team,or their clients.A geotechnical engineering study conducted for a civil engi- • project ownership. neer may not fulfill the needs of a construction contractor or even another civil engineer.Because each geotechnical engineering study is unique,each As a general rule,always inform your geotechnical engineer of project geotechnical engineering report is unique,prepared solely for the client.No changes—even minor ones—and request an assessment of their impact. one except you should rely on your geotechnical engineering report without Geotechnical engineers cannot accept responsibility or liability for problems first conferring with the geotechnical engineer who prepared it.And no one that occur because their reports do not consider developments of which —not even you—should apply the report for any purpose or project they were not informed. except the one originally contemplated. Subsurface Conditions Can Change Read the Full Repot A geotechnical engineering report is based on conditions that existed at Serious problems have occurred because those relying on a geotechnical the time the study was performed. Do not rely on a geotechnical engineer- engineering report did not read it all.Do not rely on an executive summary. ing report whose adequacy may have been affected by:the passage of Do not read selected elements only. time;by man-made events,such as construction on or adjacent to the site; or by natural events,such as floods,earthquakes,or groundwater fluctua- A Geotechnical Engineering Report Is Based on tions.Always contact the geotechnical engineer before applying the report A Unique Set of Project-Specific Factors to determine if it is still reliable.A minor amount of additional testing or Geotechnical engineers consider a number of unique,project-specific fac- analysis could prevent major problems. tors when establishing the scope of a study.Typical factors include:the client's goals,objectives,and risk management preferences;the general Most Geotechnical Findings Are Professional nature of the structure involved,its size,and configuration;the location of Opinions the structure on the site;and other planned or existing site improvements, Site exploration identifies subsurface conditions only at those points where such as access roads,parking lots,and underground utilities.Unless the subsurface tests are conducted or samples are taken.Geotechnical engi- geotechnical engineer who conducted the study specifically indicates oth- neers review field and laboratory data and then apply their professional erwise,do not rely on a geotechnical engineering report that was: judgment to render an opinion about subsurface conditions throughout the • not prepared for you, site.Actual subsurface conditions may differ—sometimes significantly- • not prepared for your project, from those indicated in your report.Retaining the geotechnical engineer • not prepared for the specific site explored,or who developed your report to provide construction observation is the • completed before important project changes were made. most effective method of managing the risks associated with unanticipated conditions. Typical changes that can erode the reliability of an existing geotechnical engineering report include those that affect: A Report's Recommendations Are Not Final • the function of the proposed structure,as when it's changed from a Do not overrely on the construction recommendations included in your parking garage to an office building,or from a light industrial plant report. Those recommendations are not final,because geotechnical engi- to a refrigerated warehouse, neers develop them principally from judgment and opinion.Geotechnical engineers can finalize their recommendations only by observing actual subsurface conditions revealed during construction. The geotechnical have led to disappointments,claims,and disputes.To help reduce the risk engineer who developed your report cannot assume responsibility or of such outcomes,geotechnical engineers commonly include a variety of liability for the report's recommendations if that engineer does not perform explanatory provisions in their reports.Sometimes labeled"limitations" construction observation. many of these provisions indicate where geotechnical engineers'responsi- bilities begin and end,to help others recognize their own responsibilities A Geotechnical Engineering Report Is Subject to and risks.Read these provisions closely.Ask questions.Your geotechnical Misinterpretation engineer should respond fully and frankly. Other design team members'misinterpretation of geotechnical engineering reports has resulted in costly problems.Lower that risk by having your geo- Geoenvironmental Concerns Are Not Covered technical engineer confer with appropriate members of the design team after The equipment,techniques,and personnel used to perform a geoenviron- submitting the report.Also retain your geotechnical engineer to review perti- mental study differ significantly from those used to perform a geotechnical nent elements of the design team's plans and specifications.Contractors can study.For that reason,a geotechnical engineering report does not usually also misinterpret a geotechnical engineering report.Reduce that risk by relate any geoenvironmental findings,conclusions,or recommendations; having your geotechnical engineer participate in prebid and preconstruction e.g.,about the likelihood of encountering underground storage tanks or conferences,and by providing construction observation. regulated contaminants. Unanticipated environmental problems have led to numerous project failures.If you have not yet obtained your own geoen- Do Not Redraw the Engineer's Logs vironmental information,ask your geotechnical consultant for risk man- Geotechnical engineers prepare final boring and testing logs based upon agement guidance.Do not rely on an environmental report prepared for their interpretation of field logs and laboratory data.To prevent errors or someone else. omissions,the logs included in a geotechnical engineering report should never be redrawn for inclusion in architectural or other design drawings. Obtain Professional Assistance To Deal with Mold Only photographic or electronic reproduction is acceptable,but recognize Diverse strategies can be applied during building design,construction, that separating logs from the report can elevate risk operation,and maintenance to prevent significant amounts of mold from growing on indoor surfaces.To be effective,all such strategies should be Give Contractors a Complete Report and devised for the express purpose of mold prevention,integrated into a corn- Guidance prehensive plan,and executed with diligent oversight by a professional Some owners and design professionals mistakenly believe they can make mold prevention consultant.Because just a small amount of water or contractors liable for unanticipated subsurface conditions by limiting what moisture can lead to the development of severe mold infestations,a num- they provide for bid preparation.To help prevent costly problems,give con- ber of mold prevention strategies focus on keeping building surfaces dry. tractors the complete geotechnical engineering report,but preface it with a While groundwater,water infiltration,and similar issues may have been clearly written letter of transmittal.In that letter,advise contractors that the addressed as part of the geotechnical engineering study whose findings report was not prepared for purposes of bid development and that the are conveyed in this report,the geotechnical engineer in charge of this report's accuracy is limited;encourage them to confer with the geotechnical project is not a mold prevention consultant; none of the services per- engineer who prepared the report(a modest fee may be required)and/or to formed in connection with the geotechnical engineer's study conduct additional study to obtain the specific types of information they were designed or conducted for the purpose of mold preven- need or prefer.A prebid conference can also be valuable.Be sure contrac- tion. Proper implementation of the recommendations conveyed tors have sufficient time to perform additional study.Only then might you •in this report will not of itself be sufficient to prevent mold from be in a position to give contractors the best information available to you, growing in or on the structure involved. while requiring them to at least share some of the financial responsibilities stemming from unanticipated conditions. Rely, on Your ASFE-Member Geotechncial Engineer for Additional Assistance Read Responsibility Provisions Closely Membership in ASFE/The Best People on Earth exposes geotechnical Some clients,design professionals,and contractors do not recognize that engineers to a wide array of risk management techniques that can be of geotechnical engineering is far less exact than other engineering disci- genuine benefit for everyone involved with a construction project.Confer plines.This lack of understanding has created unrealistic expectations that with you ASFE-member geotechnical engineer for more information. ASFE THE BEST PEOPLE ON EARTH 8811 Colesville Road/Suite G106,Silver Spring,MD 20910 Telephone:301/565-2733 Facsimile:301/589-2017 e-mail:info@asfe.org www.asfe.org Copyright 2004 by ASFE,inc.Duplication,reproduction,or copying of this document,in whole or in part,by any means whatsoever,is strictly prohibited,except with ASFE's specific written permission.Excerpting,quoting,or otherwise extracting wording from this document is permitted only with the express written permission of ASFE,and only for purposes of scholarly research or book review onry members of ASFE may use this document as a complement to or as an element of a geotechnical engineering report.Any other firm,individual,or other entity that so uses this document without being an ASFE member could be commiting negligent or intentional(fraudulent)misrepresentation. IIGER06075.0MRP APPENDIX D STORMWATER RUNOFF CALCULATIONS Western Washington Hydrology Model PROJECT REPORT Project Name: Marina 2 Site Address: Marina City Brinnon Report Date : 7/14/2014 Gage Quilcene Data Start 1948/10/01 Data End 1993/09/30 Precip Scale: 1.33 WWHM3 Version: PREDEVELOPED LAND USE Name Basin 1 Bypass: No GroundWater: No Pervious Land Use Acres A B, Forest, Steep .616 Impervious Land Use Acres ROADS STEEP 0.151 Element Flows To: Surface Interflow Groundwater Name Basin 1 Bypass: No GroundWater: No Pervious Land Use Acres A B, Forest, Steep .616 Impervious Land Use Acres ROADS STEEP 0.151 Element Flows To: Surface Interflow Groundwater MITIGATED LAND USE ANALYSIS RESULTS Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.131503 5 year 0.200269 10 year 0.256516 25 year 0.341325 50 year 0.415517 100 year 0.500066 . Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.131503 5 year 0.200269 10 year 0.256516 25 year 0.341325 50 year 0.415517 100 year 0.500066 Yearly Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1950 0.354 0.354 1951 0.161 0.161 1952 0.179 0.179 1953 0.107 0.107 1954 0.128 0.128 1955 0.153 0.153 1956 0.154 0.154 1957 0.697 0.697 1958 0.123 0.123 1959 0.246 0.246 1960 0.158 0.158 1961 0.093 0.093 1962 0.208 0.208 1963 0.092 0.092 1964 0.133 0.133 1965 0.092 0.092 1966 0.079 0.079 1967 0.380 0.380 1968 0.158 0.158 1969 0.137 0.137 1970 0.106 0.106 1971 0.116 0.116 1972 0.206 0.206 1973 0.193 0.193 1974 0.136 0.136 1975 0.194 0.194 1976 0.141 0.141 1977 0.224 0.224 1978 0.075 0.075 1979 0.107 0.107 1980 0.081 0.081 1981 0.203 0.203 1982 0.119 0.119 1983 0.101 0.101 1984 0.146 0.146 1985 0.061 0.061 1986 0.099 0.099 1987 0.114 0.114 1988 0.172 0.172 1989 0.090 0.090 1990 0.082 0.082 1991 0.083 0.083 1992 0.172 0.172 1993 0.109 0.109 1994 0.091 0.091 Ranked Yearly Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.6971 0.6971 2 0.3804 0.3804 3 0.3545 0.3545 4 0.2460 0.2460 5 0.2235 0.2235 6 0.2083 0.2083 7 0.2056 0.2056 8 0.2030 0.2030 9 0.1942 0.1942 10 0.1930 0.1930 11 0.1792 0.1792 12 0.1723 0.1723 13 0.1715 0.1715 14 0.1612 0.1612 15 0.1581 0.1581 16 0.1578 0.1578 17 0.1545 0.1545 18 0.1528 0.1528 19 0.1458 0.1458 20 0.1411 0.1411 21 0.1374 0.1374 22 0.1365 0.1365 23 0.1329 0.1329 24 0.1280 0.1280 25 0.1234 0.1234 26 0.1186 0.1186 27 0.1156 0.1156 28 0.1143 0.1143 29 0.1091 0.1091 30 0.1071 0.1071 31 0.1065 0.1065 32 0.1060 0.1060 33 0.1009 0.1009 34 0.0990 0.0990 35 0.0928 0.0928 36 0.0923 0.0923 37 0.0916 0.0916 38 0.0914 0.0914 39 0.0895 0.0895 40 0.0827 0.0827 41 0.0815 0.0815 42 0.0812 0.0812 43 0.0793 0.0793 44 0.0753 0.0753 45 0.0614 0.0614 POC #1 The Facility PASSED The Facility PASSED. Flow(CFS) Predev Dev Percentage Pass/Fail 0.0658 628 628 100 Pass 0.0693 554 554 100 Pass 0.0728 493 493 100 Pass 0.0764 404 404 100 Pass 0.0799 342 342 100 Pass 0.0834 279 279 100 Pass 0.0869 245 245 100 Pass 0.0905 215 215 100 Pass 0.0940 186 186 100 Pass 0.0975 172 172 100 Pass 0.1011 150 150 100 Pass 0.1046 139 139 100 Pass 0.1081 126 126 100 Pass 0.1117 118 118 100 Pass 0.1152 103 103 100 Pass 0.1187 91 91 100 Pass 0.1223 85 85 100 Pass 0.1258 82 82 100 Pass 0.1293 75 75 100 Pass 0.1329 66 66 100 Pass 0.1364 55 55 100 Pass 0.1399 46 46 100 Pass 0.1435 41 41 100 Pass 0.1470 40 40 100 Pass 0.1505 36 36 100 Pass 0.1541 32 32 100 Pass 0.1576 29 29 100 Pass 0.1611 27 27 100 Pass 0.1647 25 25 100 Pass 0.1682 25 25 100 Pass Ao 0.1717 25 25 100 Pass 0.1753 20 20 100 Pass 0.1788 18 18 100 Pass 0.1823 15 15 100 Pass I 0.1859 15 15 100 Pass 0.1894 13 13 100 Pass 0.1929 13 13 100 Pass 0.1965 11 11 100 Pass 0.2000 9 9 100 Pass 0.2035 8 8 100 Pass 0.2071 6 6 100 Pass 0.2106 5 5 100 Pass 0.2141 5 5 100 Pass 0.2177 5 5 100 Pass 0.2212 5 5 100 Pass 0.2247 4 4 100 Pass 0.2283 4 4 100 Pass 0.2318 4 4 100 Pass 0.2353 4 4 100 Pass 0.2389 4 4 100 Pass 0.2424 4 4 100 Pass 0.2459 4 4 100 Pass 0.2495 3 3 100 Pass 0.2530 3 3 100 Pass 0.2565 3 3 100 Pass 0.2601 3 3 100 Pass 0.2636 3 3 100 Pass 0.2671 3 3 100 Pass 0.2707 3 3 100 Pass 0.2742 3 3 100 Pass 0.2777 3 3 100 Pass 0.2813 3 3 100 Pass 0.2848 3 3 100 Pass 0.2883 3 3 100 Pass 0.2919 3 3 100 Pass 0.2954 3 3 100 Pass 0.2989 3 3 100 Pass 0.3025 3 3 100 Pass 0.3060 3 3 100 Pass 0.3095 3 3 100 Pass 0.3131 3 3 100 Pass 0.3166 3 3 100 Pass 0.3201 3 3 100 Pass 0.3237 3 3 100 Pass 0.3272 3 3 100 Pass 0.3307 3 3 100 Pass 0.3343 3 3 100 Pass 0.3378 3 3 100 Pass 0.3413 3 3 100 Pass 0.3449 3 3 100 Pass 0.3484 3 3 100 Pass 0.3519 3 3 100 Pass 0.3555 2 2 100 Pass 0.3590 2 2 100 Pass 0.3625 2 2 100 Pass 0.3661 2 2 100 Pass 0.3696 2 2 100 Pass 0.3731 2 2 100 Pass 0.3767 2 2 100 Pass 0.3802 2 2 100 Pass 0.3837 1 1 100 Pass 0.3873 1 1 100 Pass 0.3908 1 1 100 Pass 0.3943 1 1 100 Pass 0.3979 1 1 100 Pass 0.4014 1 1 100 Pass 0.4049 1 1 100 Pass 0.4085 1 1 100 Pass 0.4120 1 1 100 Pass 0.4155 1 1 100 Pass lindd 4 ater Quality BMP Flow and Volume for POC 1. -line facility volume: 0.0571 acre-feet n-line facility target flow: 0.01 cfs. justed for 15 min: 0.0806 cfs. ff-line facility target flow: 0.04 cfs. justed for 15 min: 0.0452 cfs. Perind and Impind Changes No changes have been made. This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by the user. Clear Creek Solutions and the Washington State Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washington State Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been advised of the possibility of such damages. STORMFILTER CARTRIDGE CALCULATION (0.0806 cfs)(7.48 gal/cf)(60 sec/min)/7.5 gal/min = 4.82 USE 5 cartridges StormShedTM Output PLEASANT HARBOR MARINA Entrance Drive Widening — Runoff Calculations July 14, 2014 Overland Event Summary: BasiniD Peak Q Peak T Peak Vol Area Method Raintype Event ------ (cfs) (hrs) (ac-ft) ac /Loss Overland/Paving 0.34 8.00 0.1471 0.77 SBUH/SCS TYPE1A 2 yr Overland/Paving 0.55 8.00 0.2261 0.77 SBUH/SCS TYPE1A 100 yr Overland/Paving 0.14 8.00 0.0712 0.77 SBUH/SCS TYPE1A Other Drainage Area: Overland Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 0.6160 ac 72.00 0.25 hrs Impervious 0.1510 ac 98.00 0.08 hrs Total 0.7670 ac Pervious CN Data: Forest 72.00 0.6160 ac Impervious CN Data: Pavement 98.00 0.1510 ac Pervious TC Data: Flow type: Description: Travel Time Fixed Steep overland 15.00 min Impervious TC Data: Flow type: Description: Travel Time Fixed Pavement 5.00 min David W. Johnson From: Eric Kuzma Sent: Monday, August 18, 2014 10:49 AM To: David W. Johnson Subject: RE: ZON14-00024 Hi David, Craig Peck(Pleasant Harbor Marina) has sent me revised Stormwater Site Plan electronic documents which adequately address all of Public Works 8/11/14 comments. He will be sending stamped hard copies in the mail, please sent one copy to me for PW records upon receipt. I saw in tidemark that Stormwater was sent to DRD, did you want me to sign something off? Also, it looks as though PW fees have been paid, how do I verify? Thanks, Eric Eric Kuzma,Architect/Engineer HI Jefferson County Department of Public Works 623 Sheridan Street,Port Townsend,WA 98368 Ph:360.385.9167 - 360.301.6783(c) Fax:360.385.9234 Email: ekuzma(a),cojefferson.wa.us Web: www.cojefferson.wa..us/publicworks 1 7 bQ i LI - 2-9 '"i JEFFERSON COUNTY . 111 A DEPARTMENT OF COMMUNITY DEVELOPMENT -- ilk. �,t/ 621 Sheridan Street(Pat Townsend,WA 983681 Web:www.co.ieffersonwa.ustcommunihdevelooment -•. lei..i64.41- .Y{4:iu 1 F dn_stiU..3i ir.445 i E i_J Izdli.bait�:0 ftdr son.wa.us Building Permits&Inspections I Development Consistency Review'Long Range Planning I Watershed Stewardship Resource Center Master Permit Atroiicatiort MLA- It — co S' _ I Protect Description(include separate sheets as necessanit [ Driveway entrance widening to Pleasant Harbor Marina Tax Parcel Number: 502152013 Property Size: 8.28/360,730 (acresrsquare feet) Site Address and/or moclio„s to orooeert_w:�9l3 U.S.Highway 101,Bannon 98320 Property Owners)d Record:Pleasant Harbor Marina Telephone:3804984811 Fax:868-848•4612 email: Mailing Address:308913 U.S.Highway 101,Brinnon,WA 98320 Applicant/Agent(If different from owner): UOt41 C.Oi t:MkLi Telephope:208-714-1482 Fax 866--848-4612 emelt emitimeimpowhon.pkv.oy— Mailing Address:308013 U.S.Highway 101,Brimon,WA 98320 What kind of Permit?(Check each box that applies ❑Lot or Road Segre_=,• r (G 0 E I v pi❑Buidng ❑Critical Areas St r , L+ - ❑ Demolition Permit ❑Variance(Minor,Major. - -Economic Use) ❑Single Fatuity ❑Garage Attached/Detached ❑Conditional Use(C(a),C •I ❑ Manufactured Home ❑ Modular ❑Discretionary"D'or Un ." • k �OT. .,c PC 1 7 -2014 ❑ Commercial ❑specai use(Fsentjal - .. ❑ Change of Use ❑Boundary Line Adju ■ , t i i ❑ Address ❑Road Approach ❑Short Plat" i _----- ❑Home Business 0 Cottage Industry ❑Binding Site lit" !JEFFERSON COUNTY ❑Propane ❑bat Plat t MUNITY DEVELOP)F�'T_.___ 9 "" f7 Sign D Planned Rural Residen a_ r . t. tt, r ❑Mowed"Yes"Use Consistency Analysis ❑Plat Vacation/Alteration** ®Stormwater Management ❑Shoreline Master Program Exemption/Permit Revisions" ❑Ske Plan Approval Advance Determination(SPAAD)* ❑Shoreline Management Substantial Development"" ❑Temporary Use 0 Shoreline Management Variance 0 Wireless Telecommunication" ❑Comprehensive Plan/UDC/Land Use District Map Amendment ❑Forest Practices Act/Release of Six-Year Moratorium ❑Jefferson County Shoreline Master Program Amendment *May requite a Pre-Application Conference ❑Tree Vegetation Request "Requires a Pre•Applcafioon Conference Please identify any other local,state or federal permits required for this proposal,if known: ; None known - . DES' NON OF AGENT I hereby designate Don fl f / to act as my agent in matters relating to this application for permit(s). 1 OWNER SIGNATURE t ii..' A " .. Date: --._/r U. �,. C. ( j ( /V By signing this a ation farm,.the owner/agent:,--,l that the formation provided herein,and in any attachments,is true and�cor correct to the best of his,her or its knowledge. Any material falsehood or any omission of a material fact made by the ovmerlagent with respect to this application packet may restrain this permit being null and void. I further agree to save,indemnify and hold itemises Jefferson County against all liabilities,judgments,court costs,reasonable attorney's fees and expenses which may in any way accrue against Jefferson County as a result of or in consequence of the granting of this permit. I further agree to provide access and right of entry to Jefferson County and its employees,representatives or agents for the sole purpose of application review and any required later Inspections. Staff's access and right of entry will be assumed unless the applicant informs the County in writing at the time of the that he wants prior notice. Signature:�a ("I l.si *.--- Date: -OP" i''E The action or actions Applicant will undertake as a result of the issuance of this plank may negatively impact upon one or more threatened or endangered species and could lead to a potential take"of an endangered species as those terms are defined in the federal law known as the "Endangered Species Act'or'ESA'Jefferson County makes no assurances to the applicant that the actions that*ill be undertaken because this permit has been issued will not violate the ESA.Any individual,group or agency can fife a lawsuit on behalf of an endangered species regarding your action(s)even if you are in compliance with the Jefferson County development code.The Applicant acknowledges that he,she or tt holds individual and sire resparapltY for adhering to and complying with the ESA. The Applicant has read ihis discl and signs and dates It below. Signature: Date: 4 t 07/24/2013 BUILDER STATEMENT The signer of this statement does hereby certify that they are the Owners of the parcel referenced herein,that they are not licensed contractors and that they will be assuming the responsibility of the General Contractor for the proposed project. Signature: Date: GENERAL CONTRACTOR OR MANUFACTURED HOME INSTALLER: PHONE: FAx: ( ) ( ) MAILING ADDRESS: EMAIL: CONTRACTOR'S LICENSE WAINS NUMBER: NUMBER ARCHITECT/ENGINEER: PHONE ( ) Fax:( ) MAILING ADDRESS: EMAIL Project Type: Frame Type: Bathrooms: Shoreline: Type of Sewage Disposal: ❑ New ❑ Wood Existing; ❑ Sewer ❑ Addition ❑ Steel Proposed: Bank ❑ Community System O Alteration/Remodel 0 Concrete Total: Height: ❑ Individual System ❑ Repair ❑ Masonry SEP Permit# O Demolition ❑ Other: Bedrooms: Water Supply: Existing: Setback: ❑ Pri . 0. Two Party Type of Heat: Proposed: PLC,.- V/ V Total . Iraoil If this is a Commercial Prolect you must answer the following: L / � r f Number of Parking Spaces: Current: Proposed: Num. !A Pail'Itig Shat ', Number of occupants(includes owners,tenants,employees,etc) Current ,•• ed IBC Occupancy: IBC Type of construction: Will you ha - •:• S-.:- If this is a Pro 1 ne Tank a d/or • •liance Installation .-rmi mark all items below th= k a• .1 . IV- rE � t",r'" Underground Tank Above ground tank Size of Propane Tank: [PI__F _. _�:r'�DES Heat Stove Cook Stove Woodstove Fireplace.nsert rehtO I evotS telleP I knaT retaW toH I Is this appliance being installed in a Manufactured I Mobile Home? Yes / No When applying for a permit to install a propane tank you must also submit a site plan showing all of the buildings,all property lines,tank location and size,distances from the propane tank to all property lines,buildings and septic system compone ts, including the reserve area. Square Footage Current Proposed For Office Use Only Amount Revision Main Floor Heated EH Bld App Review: 2nd Floor Heated B •cc) Other Heated •Betfwe: t.JO Mezzanine Additional Section: I CI .Lb Heated Basement Plan Check fee: Unheated Basement State Surcharge fee: Other Unheated Pot Water Review fee: Garage/Carport SUBTOTAL Decks 911/Rd Approach fee: Other TOTAL: $ Receipt Number: / I z, Cash/Check Number: 0s,, ESTIMATED COST(REQUIRED) Date:l /y •Fair market value of all labor and materials foundation to finish Initials: 07/24/2013 ¢ JEFFERSON COUNTY OEOV1 ' p4 1 DEPARTMENT OF COMMUNITY DEVELOPMENT ' . 621 Sheridan Street Port Townsend Washington 98368 Li e ° 3601379-4450 X00/831-2678�360I379-4451 Fax JEFFERSON COUNTY DEPT.OF COMMUNITY DEVELOPMENT j St Management Permit Supplemental Application (�()()�(� �yy� �,x I e# Para F_CT/APPLICANT NAME: �� a. „1 f J 1\ Applications for grading projects or land-disturbing activities which require a stormwater management permit shall include the following information. This information may also be provided on other diagrams, plans, studies, or attachments submitted with the project application. If so, please indicate such on this permit application. The Administrator may waive specific submittal requirements determined to be unnecessary for review of the application. 1. Source of fill material and deposition of excess material. Crushed rock for road base and water tank foundation material will be hauled in from commercial pit 2. Physical characteristics of fill material: Commercially processed crushed rock 3. Proposed methods of placement and compaction consistent with the applicable standards on Appendix Chapter 33 of the Uniform Building Code. Vibratory compactor or roller 4. Proposed surfacing material. Water tank will be surrounded by 4'width crushed rock walk. 5. Proposed method(s)of drainage and erosion control. Runoff from top of tank and pump house roof will drain to crushed rock walkway and/or disipate as sheet flow to downslope vegetation 6. Methods for restoration of the site. Disturbed soil areas will be seeded. 7. Demonstrate that instream flow of water will remain unobstructed. Direct discharge of roof and site runoff will not be directed to drainage channels. 8. Demonstrate that erosion and sedimentation from outflow channels will be minimized by vegetation or other means,and demonstrate that pond runoff will be controlled to protect adjacent property damage. Water tank site will be provided with Straw Wattles rather than silt fence to reduce site disturbance. Construction of water tank begins below grade with vertical walls on relatively flat site in dry season. By signing the application form,the applicant/owner attests that the information provided herein is true and correct to the best of their kn• ,edge. I also ce ' that this application is being made with the full knowledge and consent of all owners of be affected P . . 1 a , �� IbV July 15, 2014 (APPLICANT OR AU • ._• REPRESENTATIVE SONATURE) (DATE) STORMWATER MGMT PERMIT.DOC REV.4/16/2001 Pane 3 ______ nEc, �_ ,VrE I JEFFERSON COUNTY , DEPARTMENT OF COMMUNITY DEVELOPMENT \ _ _______I I 621 Sheridan Street•Port Townsend•Washington 98368 -EFFSON COUNTY -w,,szati, 360/379-4450.360/379-4451 Fax DEPT.Of COh4ERM LAITY DEVELOPMENT http:/iwww.co.Jefferson.wa.us/commdevelopment/ Stormwater Calculation Worksheet MLA# PROJECT/APPLICANT NAME:WEN&NIAT 114ArS140 VANZAIN DETERMINING STORMWATER MANAGEMENT REQUIREMENTS:This stomuwater calculation worksheet should be completed first to classify the proposal as•small;*medium,"or large." The size determines whether a Stormwater Site Plan is required in conjunction with a stand-alone sommwater management permit application,building permit application,or other land use approval application that involves sormwater review. The basic information will also be helpful for completing a Stormwater Site Plan,if required. / PARCEL SIZE(I.E..SITE) Size of parcel .•Z'$ acres An acre contains 43,560 square feet. Multiply the acreage by this figure. Size of parcel in square feet &C)1,SU sq/ft Land-disturbing activity is any activity that results in movement of earth,or a change in the existing soil cover(both vegetative and non-vegetative) and/or the existing soil topography. Land disturbing activities include, but are not limited to dearing, grading, filling, excavation,and compaction associated with stabilization of structures and road construction. Native vegetation is vegetation comprised on plant species,other than noxious weeds,that are indigenous to the coastal region of the Pacific Northwest and which reasonably could have been expected to naturally occur on the site. Examples include species such as Douglas fir,western hemlock,western red cedar,alder,big-leaf maple,and vine maple;shrubs such as willow,elderberry,salmonberry, and salal;herbaceous plants such as sword fern,foam flower,and fireweed. ND ' - -BING ACTIVI C• R- ON OF •TIVE L GET' l•N • I, • E OF C T Calculate the total area to be deared,graded,filled, . Answer the following two questions related to excavated,and/or compacted for proposed development conversion of native vegetation: project. Include in this calculation the area to be cleared for: Does the project convert%acres or more of Construction site for structures NA native vegetation to lawn or landscaped areas? Drainfield,septic tank,etc. sq/ft Circle: Yes No Well,utilities,etc. S4-SC) sq/ft Does the project convert 2''A acres or more of ��U® native vegetation to pasture? Driveway,parking,roads,etc. sq/R Circle: Yes No Lawn,landscaping,etc. sq/R Other compacted surface,etc.— sq/ft Indicate Total Volumes of Proposed: 1 Total Land Disturbance 1 S4 agtft Cut 4� Fill (cu/yd) [over] rrormwater cafe worksheet—REV.212012006 t G E TV E Impervious surface is a hard surface that either prevents or retards the entry of water into the soil ,;_ z, 1 -• r.r t,., ; prior to development. A hard surface area which causes water to run off the surface in greater quantities ,, increased rate of flow from the flow present under natural conditions prior to development. Common impervious surfaces indu��-■:M are not limitedto tops,walkways, patios,driveways, parking lots or storage area%concrete or asphalt paving,gravel •• •.. 7:,. ea than Mate'#4 and oiled,macadam or other surfaces which similarly impede the natural infiltration of stormwater. COLNN STORMWATER CALULATIONS—IMPERVIOUS SURFACE DEPT OF COMM tN DEMO? IAN UMW Structures(all roof area) 4' sq/I Structures Lures(all roof area) sq/t Sidewalks WM13-- 3C)2' sq/ft • Sidewalks �� std Patios sg/fl Patios ( L' \ 4©�J Solid Decks sgift Solid Decks NM (without infiltration below) (without infiltration below) © (D6t-1 Driveway,Parking,roads etc 'qC�4 sq/ft Driveway,parking,roads,etc I �� NM ' .1 tt %J1A� Other • sg/ft Other C �1 sq/ft Total New �S sglft Total Existing ,� t v "- sq/R TOTAL NEW+TOTAL EXISTING" �� ® sq/ft "This amount will be used to check total lot coverage. The following questions will help determine whether the proposed project is considered development or redevelopment. DEVELOPMENT v.REDEVELOPMENT �f Divide the total existing impervious surface above by the size of the parcel and convert to a percentage: "'� % . Does the site have 35%or more of existing impervious surface? Circle: Yes No FURTHER INSTRUCTIONS: If the answer is yes, the proposal is considered redevelopment and the attached Figure 2 should be used to determine the applicable Minimum Requirements. If the answer is no,the proposal is considered new development and the attached Figure 1 should be used. At this juncture,the applicant should refer to the able Flow Chart to determine the Minimum Requirements for sormwater management. DCD staff will help verify the classification of the project and the application requirements. For proponents of "small" projects who must comply only with Minimum Requirement #2—Construction Stormwater Pollution Prevention—an additional submittal is not required. The proponent is responsible for employing the 12 Elements to control erosion and prevent sediment and other pollutants from leaving the site during the construction phase of the project. Pick up the Construction Stormwater Pollution Prevention (SWPP) Best Management Practices(BMPs) Packet. Proponents of"medium"projects—those that must meet only Minimum Requirements #1 through #5—and for "large' projects—those that must meet all 10 Minimum Requirements—are required to submit a Stonnwater Site Plan. DCD has prepared a submittal template of a Stormwater Site Plan, principally for rural residential projects. Complete the template in the Stormwater Site Plan Instructions and Submittal Template or prepare a Stormwater Site Plan using the step-by-step guidance in the StommwaterManagement ltd. APPLICANT SIGNATURE By signing the Stormwater Calculation Worksheet, I as the applicant/owner attest that the information provided herein is true and correct to the best of my knowledge. I also certify that this application is being made with the full knowledge and consent of all owners of the affected property. ' N,\ '‘).Si$4 —1\\k‘ANek (LANDOWNER• -AUTHORIZED REPRESENTATIVE SIGNATURE) (DATE) ammeter calk wakNieet—REV.2I2012OO8 2 FIGURE 2: REDEVELOPMENT Do the new,replaced, or new plus replaced impervious surfaces total 2,000 square feet or more? OR Does the land disturbing activity total 7,000 square feet or more? Yes No .�� • "MEDIUM"PROJECT "SMALL"PROJECT Minimum Requirements#1 through#5 Apply Minimum Requirement#2, apply to the new and replaced impervious Construction Stormwater Pollution surfaces and the land disturbed. Prevention Next Question ' T Does the project add 5,000 square feet or more of new impervious surfaces? OR Convert 3/4 acres or more of native vegetation to lawn or landscaped areas? OR Convert 2.5 acres or more of native vegetation to pasture? Yes ( Next "LARGE"PROJECT Question Is this a road- Minimum Requirements#1 through#10 related project? apply to the new impervious surfaces 11112% and the converted pervious surfaces. *.ALSC. ir'a- No i 1A1,1Y-4,N tv1 Q 14.O VSO' Does the project add 5,000 square feet or more of new impervious surfaces? Yes �No ♦ T Do new impervious surfaces add 50%or Is the total of the new plus replaced more to the existing impervious surfaces impervious surfaces 5,000 square feet or within the project limits? more,AND does the value of the proposed improvements—including No Yes interior improvements—exceed 50%of the assessed value(or replacement value) No additional of the existing site improvements? requirements Yes No No additional Minimum Requirements#1 through#10 requirements apply to the new and replaced impervious surfaces. 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