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Home My WebLink AboutHMP 502155001Prepared for: Steve Peterson 144 Quiet Place Brinnon, WA 98320 SEP p521118 JEFFERsong coUt"-YtOD . Steve Peterson Habitat Management Plan and Mitigation 144 Quiet Place Brinnon, WA 98320 September 2018 Olympic Wetland Resources, LLC 855 50th Street Port Townsend, Washington 98368 360 385-6432 dixie@cablespeed.com Steve Peterson Habitat Management Plan And Mitigation Parcel 502 151 033 and 502 155 001 144 Quiet Place, Brinnon WA 98320 September 2018 Table of Contents Introduction and History Methodology Description of Site Vegetation Identified on Peterson Parcels Priority Habitat and Species (PHS) Mitigation Area and Landscape Specifications Steve Peterson Landscape Plan Impact Assessment Compensatory Mitigation Mitigation Goals and Objectives Installation and Maintenance Monitoring Schedule Performance Standards Contingency Plan Summary Limitations Appendix Figure 1 Location, Priority Habitat Species, Septic Design Figure 2 Mitigation Area, Photographs, and Site Plan Figure 3 Landscape Plan and Mitigation Details References Steve Peterson Habitat Management Plan and Mitigation Parcel 502 151 033 and 502155 001 144 Quiet Place, Brinnon WA 98320 September 2018 Introduction and History At the request of Steve Peterson this Habitat Management Plan (HMP) and mitigation have been prepared to address impacts within the 150' shoreline buffer at 144 Quiet Place, Brinnon, WA (formerly Spotted Owl Lane), All new developments adjacent to shorelines are subject to regulations outlined in Jefferson County Unified Development Code (UDC), 18.22.230 Fish and Wildlife Habitat Conservation Area (FWHCA). Buffer sizes have been determined using the UDC Critical Areas Table 18.22.330(3). In summary, the 5.348 acre parcel (Lot 2, Parcel 502 155 00 1) had a septic designed for two bedrooms and two bathrooms; currently this house above a garage has one bedroom and two bathrooms. The building on the adjacent 1.06 acre parcel (Lot 1, Parcel 502 151 003), was constructed later and has two bedrooms and two bathrooms. This building will be referred to as the satellite bedroom. A non -permitted septic tank and pump were installed behind the satellite bedroom and lines were installed to pump sewage to the original septic and drainfseld along existing driveways to the 5 acre parcel (Lot 2). Construction of sewer lines are permitted within FWHC buffer when there are no other practicable alternatives available, and can meet local health code requirements (Title 18.22.250 (2) (b). All construction from the installation of both the water line and pump lines and sewage pump are within the 150 foot shoreline buffer and are on separate parcels. A possible solution to this vlolad on will be to join the parcels (Lots 1 and 2) and to remove one bathroom and one bedroom from the satellite building. A site assessment was conducted on September 5, 2018 and past reports and email communications were reviewed. These include an abbreviated HMP by Christy Christensen, C3 Habitat Corp., November 24, 2014, a updated septic design by Creative Design Solution March 9, 2019, and a site plan by TK Design Build. Joel Peterson and Donna Frostholm, Jefferson County Department of Community Development (DCD) have reviewed these documents and found that additional information, including a Mitigation is required to comply with DCD Critical Area Codes prior to issuing a permit. Linda Atkins from Jefferson County Environmental Health has also visited this site and is requiring additional information. Steve Peterson, 144 Quiet Place, Brinnon WA Page 1 Olympic Wetland Resources, LLC September 2018 Methodology Methodology for this Shoreline Project follows standards outlined in Jefferson County UDC and includes the following references and documents: 18.22 Critical Areas, 18.22.2270, FWHCAs 18.22.440 HMP 18.22.350 Mitigation 18.25 Shoreline Master Program (February 2014), Recreation 18.25.490 (3) (a and i) WA State Wetland Rating System for Western Washington DOE, 2015 Pub#04-06-025 Wetland Mitigation Ecology Publication #006-06-001 lb or as amended. Priority Habitat Species (PHS), WDFW (internet and county data base) Mitigation requirements have been prepared to meet the standards described in the De artment of Ecology, Guidance on Wetland Mitigation in the State of Washington State (March 2006 #06-06-11A and as updated on the internet) and in accordance with prescribed requirements outlined by Jefferson County Unified Development Code, Critical Areas, Article IX 18.22.270 (FWHA). Description of Site • Legal Description: Parcel 502 151 033 (Lot 1) and 502 155 001 (Lot 2) • Section: 15 Township 25N Range 2W, Southeast of HWY 101 • Location: 144 Quiet Place, Brinnon, WA, Jefferson County 16 miles south of Quilcene WA (Black Point Road to Quiet Place) • Zoning: RR 1:5, WRIA 17 SubBasin Chimacum • Soils: OeD, Olete very gravelly silt loam, 0 to 30% slopes Included in the Appendix are Figure 1 Location, PHS, Septic Design, Figure 2 Mitigation Area, Photographs and Site Plan, and Figure 3 Landscape Plan and Mitigation Details. Most of the site is vegetated with a multiple story mixed forest with a healthy dense understory of native shrubs. The site hosts a diverse native plant community creating excellent wildlife and bird habitat, screening the homesite and satellite bedroom from the shoreline of Pleasant Harbor. The site slopes to the northwest with a steep 30 foot vertical rock cliff to the rocky shoreline of Pleasant Harbor. The OHWM is clearly defined at the bottom of the cliff by a distinct change of plant communities. Vegetation was identified during the site visit on September 5, 2018. Below is the list of species identified. Vegetation Identified on Peterson Parcels Scientific Name Common name Layer Acer circinatum Vine !n le Shrub Acer macro h llum Big -leaf maple Tree Gaultheria shallop Sala] Shrub Holodiscus discolor Ocean-s2ray Shrub Pol stichum munitum Sword fern Fern Pseudotsu a menziesii Douglas- fir Tree Rhododendron macro h llum Pacific rhododendron Shrub Thuja plicata Western red cedar Tree Vaccinium parvifolium Red huckleberry Shrub Vaccinium ovatum Everween huckleberry Shrub Steve Peterson, 144 Quiet Place, Brinnon WA Page 2 Olympic Wetland Resources, LLC September 2018 Priority Habitat and Species (PHS) No sensitive species were identified during the site visit. Northern spotted owls are listed within the vicinity but not specifically to this parcel. The waters near the subject parcels have been documented to support summer and fall Chum, Chinook, Pinks, Coho, and Steelhead (Tom Johnson Department of Fish and Wildlife conversation). The list below is from Washington Department Fish and Wildlife PHS maps on the internet. All species of concern within 1/3 mile of the parcels are recorded below: Dungeness Crab Cancer ma ister Presence Eelgrass meadows Below is the list of appropriate species for this mitigation. Estuarine Zone Scientific Name Common Name Size Spacing Quantity SF Freshwater Estua and Marine Wetlands 5 125 recorded Northern Spotted Owl Strix occidentalis In Area O stet Beds 2 200 Rhododendron macrophyllum Pacific rhododendron 1 gal 6 to 8' Pacific Sand Lance Ammo d es hexa terus shoreline Purple martin Pro re subis Breeding Area Mitigation Area and Landscape Specifications Remodeling the home and satellite bedroom will have no additional impacts; the footprints of both buildings will remain the same. The total area to be mitigated is the footprint of the septic and pump behind the satellite bedroom and disturbance from the piping and water line to the drainfield. Area of disturbance is approximately --800. All water lines and sewage pipes are under existing driveways; installation impacts were temporary leaving no sign of disturbance during the September 2018 site assessment. Mitigation sites are area waterward of the satellite bedroom. Himalayan blackberry was partially removed from behind this building. Additional areas of blackberry could be removed and planted with native trees and shrubs. Although outside the 150 foot buffer the drainfield the areas of bare dirt could be stabilized with shallow rooted grasses, native ferns, and herbaceous species. The plants in this mitigation are designed to blend into existing plant communities as identified during the site assessment. They will eventually add additional habitat and species diversity. The final landscape design will be determined by property owners. Below is the list of appropriate species for this mitigation. Scientific Name Common Name Size Spacing Quantity SF Acer circinatum Vine maple 1 gal 6 to 8' 5 125 Oemleria cerasiformis Indian plum 1 gal 5' 5 100 Pinus contorta Shore pine 1 gal 8' 3 300 Pseudotsuga menzesii Douglas fir 1 gal 10' 2 200 Rhododendron macrophyllum Pacific rhododendron 1 gal 6 to 8' 5 125 Ribes sanquineum Red -flowering currant 1 gal 4 to 5' 5 100 25 950 Fourth Corner Nurseries, 3057 E. Bakerview Road Bellingham WA (360) 734-0079 Sound Native Plants, P.O. Box 7505, Olympia, WA 98507 (360) 943-7026 Woodbrook Nursery, 1620 59th Ave. Gig Harbor WA 98335 (206) 265-6271 Steve Peterson, 144 Quiet Place, Brinnon WA Page 3 Olympic Wetland Resources, LLC September 2018 Steve Peterson Landscape Plan Vegetation planting density is calculated at 20 to 25 SF per shrub and 80 to 100 SF per tree. For this project to accommodate over 800 SF of buffer impacts, 20 shrub/herbs and 5 trees should be planted to achieve this density. Impact Assessment The septic pump site behind the satellite bedroom and the water and septic pipes trenches are considered the area of impact. The area waterward of the satellite bedroom has been cleared of Himalayan blackberries (approximately 32' X 20") to install the septic pump. All septic lines are along road easements and had no visible permenant disturbance. Impacts to the shoreline of Pleasant Harbor are calculated at —800 SF. There will be "No Net Loss" of ecological function once the mitigation is complete due to the distance from the shoreline and the density of multiple layers of vegetation between the septic pump site and the shoreline. The home, satellite bedroom, and septic sites are at the top of the slope and are on level ground. Compensatory Mitigation Mitigation requirements have been prepared to meet the standards described in the DOE, Guidance on Wetland Mitigation in Washington State (2006 with updates). Through this mitigation, the impacts from the septic and pump installation will be minimal. Species have been chosen that should adapt easily to site conditions. They will require watering and weeding for the first 3 to 5 years to survive. Plants should be planted in natural groupings within the mitigation areas. Mitigation Goals and Objective The goals and objectives for the Peterson Mitigation project are: ■ No Net Loss of shoreline ecological functions; • Increase diversity in the tree and shrub layers with native species; ■ Mitigate buffer impacts with greater than a 1:1 replacement ratio (-800 SF of impact to be mitigated with 950 SF of enhancement); • Removal of non-native species that are dominant near the mitigation area (Himalayan blackberry); • Guarantee the success of the project through the maintenance and irrigation of planted species from 3 to 5 years until established; • Document compliance with the Mitigation Plan after construction and plantings are complete and assure performance standards are met through annual monitoring; • Follow Best Management Practices (UDC 18.22.590) during and after construction. Installation and Maintenance All plant material should come from healthy plants grown in containers as specified; healthy bare root trees can also be used. It is desirable to obtain plants that are adapted to this region and propagated in local nurseries. The use of appropriate native species ensures that ongoing maintenance is minimized once the plants are established. All new plantings must become established to successfully out -compete aggressive non-native species. It is recommended to install new plants in the fall so roots can become established during the winter. If planted in the summer they will require additional irrigation. Steve Peterson, 144 Quiet Place, Brinnon WA Page 4 Olympic Wetland Resources, LLC September 2018 Nursery specimens should be planted in dense groupings. In general, trees should be planted 8' to 10' apart and shrubs 3' to 5' apart. Native plant design encourages grouping of species in clusters to mimic the natural surroundings, rather than in rows or grids. Installing mulch circles (bark, wood chips, compost) to 3" deep and a minimum of 3' in diameter around each tree and shrub is recommended. Mulch circles help woody specimens become established by preserving moisture and reducing competition for nutrients from grasses. Success rates of a restoration project are greatly improved when commercial tree protectors or fencing are used on newly planted trees and shrubs. With this added protection, mortality is reduced during weeding and deer browsing. Prior to any planting new topsoil should be added to the surface to a depth of at least b inches. Exact location of shrubs within the landscape can be determined by Steve Peterson so no views are obstructed. Planted species should be maintained for 3 to 5 years to insure survival. Other appropriate native species can be added or substituted. Irrigation of newly planted trees and shrubs is critical during our dry summer months, even in wetland buffers. Trees and shrubs require a minimum of 1 inch of water per week or 2 inches every two weeks from July through September. Monitoring Schedule Annual monitoring will determine plant survivorship, species density, and general condition of planted species. This information will determine whether plant survivorship and percent aerial cover of vegetation are sufficient to meet the performance standards. All monitoring will be conducted by a professional biologist and will determine replacement ratios. Below is a recommended Monitoring and Maintenance Schedule: Performance Standards Monitoring will determine whether the performance standards identified in this Mitigation Plan are met. The proposed length of time for mitigation compliance is five years. This time period will allow for the planted and volunteer species to become established. Enhancement will be considered successful if the wetland and buffer plantings meet the following criteria: ■ Survivorship of installed tree and shrub species is expected to be 100% after the first growing season. All plants that do not survive the first year should be replanted. • Survivorship of installed tree and shrub species is expected to be 80% from year 2 through year 5. Species will be replanted until the monitoring period is complete. ■ This Mitigation Plan is considered successful if 80% or greater of desirable cover is achieved and the plants are healthy and vigorous during the fifth year of monitoring. Desirable species also include volunteer native trees and shrubs. • No more than 10% invasive species should be present at any time during the monitoring process. Non -desirable species include Scot's broom, Himalayan blackberry, and thistle. Steve Peterson, 144 Quiet Place, Brinnon WA Page 5 Olympic Wetland Resources, LLC September 2018 Contingency Plan The purpose of the contingency plan is to evaluate available alternatives if monitoring indicates that the project goal and objectives have not been achieved. Contingency plans will vary, depending upon which goals have not been met, and will apply to each specific mitigation area and activity. Appropriate corrective action will be recommended after the first year of the monitoring process and will include the following: • Replanting of any dead vegetation in the first year and additional replanting if density goals are not met over the following four years; • Increased maintenance, which may include additional watering and/or weeding; • Additional years of mitigation and/or monitoring may be required if the performance standards are not met. Summary The focus of this report is to mitigate construction impacts, specifically from the non -permitted septic pump and lines within the 150' buffer of the Pleasant Harbor shoreline. All water lines and sewage pump lines are underground and have no permanent or visible impact. The septic system and pump are also in violation of Jefferson County Public Health standards (on-site sewage, Code 18.15) since the satellite bedroom is on a separate parcel. The two parcels will need to be turned into one single parcel and one bedroom and one bathroom will need to be removed for the existing drainfield to comply Public Health standards. This mitigation is also required for a final septic and building permit approval. Total area of construction impact is calculated -800 SF. A minimum replacement ratio for buffer impacts is 1:1 as required by DCD; over 900 SF of native species will be planted. There will be "No Net Loss" of ecological functions or adverse effects of the shoreline of Pleasant Harbor once this mitigation is complete. Requirement for mitigation includes the removal and control of Himalayan blackberry prior to planting native shrubs and trees (20 shrubs/herbs and 5 trees). Success of the project will require maintenance and irrigation during the summer months. Following the completion of the septic upgrade and building alterations, non-native plant removal, and plant installation, an AS BUILT report will be submitted to the Jefferson County DCD. Limitations The final authority over approval of this septic and building alteration will be Jefferson County DCD and Public Health. Jurisdictional authority over and shorelines rests with the local, state and federal agencies. If there are further questions or planning requirements for this project, please do not hesitate to call. ReWktfu4y s Dixie Llewellin Principal Biologist, Olympic Wetland Resources Certified for Wetland Delineation, WTI, 1994 Certified for Wetland Rating and Soil Analysis DOE, 2010, 2014 Steve Peterson, 144 Quiet Place, Brinnon WA Page 6 Olympic Wetland Resources, LLC September 2018 Title: Scale: Figure OtyMpic Wetland Resources, LLC Location, Priority Habitat Species, Sep -tic Design� As Indicated 144 Quiet Place i. 856 50th Street Brinnon, WA 98320 Date: , Port Townsend, WA 98368 360 385-6432 C September 2018 Client: Steve Peterson dixie@cablespeed.com 144 Quiet Place Brinnon, WA 98320 Job #: 2018-0905 Parcel 502 1510.33 (Lot 1) Parcel 502 155 001 (Lot 2) S 15'1'251JR2W w4l WM WA Dept of Fish and Wildlife Internet Base May: Creative Desijzn Solutions March 9- 2019 qw. �• 1 Drainfield on Lot 2 Looking South to North Outside of 150' Buffer u. r Olympic Wetland Resources, l_l.0 Title: Mitigation Area, Photographs, and Site Plan urge an.r, 144 Quiet Place 85650th street Brinnon, WA 98320 PorlTownsend,WA98368 360385-6432 _....__. "._....... __...."_ Client: Steve Peterson di ie@cablespeed.com 144 Quiet Place xx.laa wi Brinnon, WA 98320 �• 1 Drainfield on Lot 2 Looking South to North Outside of 150' Buffer u. r dee x true- n+. sr; urge an.r, se I.or g xx.laa wi aexe �. cr Scale: Figure As Indicated Dale: September 2018 2 Job #: 2018-0905 Parcel 502 151 033 (Lot 1) Parcel 502 155 001 (Lot 2) S 15 T25N R2W __.:. xt a Area Behind Satellite Bedroom Septic Pump Area To Be Mitigated M nlbuilci ESIDENLE WAPEM wafx us -ppb 'STT\ L� • i Title: Scale: Figure Olympic Wetland Resources, LLC Plan and Mitigation Details As Indicated '" 144 Quiet Place 856 50th Street Brinnon, WA 98320 Date: Port Townsend, WA 98368 — 1 3 �:. 360366432 client: Steve Peterson September 2018 v dizie@ablespeed.com 144 Quiet Place Brinnon, WA 98320 Job #: 2018-0905 Parcel 502 151 033 (Lot 1) Parcel 502 155 001 (Lot 2) No Scientific Name Common Name Rimae Cnarina C1nAnf1ty I Q"ff Acer circinatum Vine ma le 1 gall 4 6 to 8' Y 5 ' 7 - 125 Oen&ria cerasiformis Indian pkun 1 gal 5' 5 100 Pinus contorta Shore pine 1 gal 8' 3 300 Pseudotsuga menzesii Douglas fir 1 1 10' 2 200 Rhododendron macro h !h m Pacific rhododendron 1 gal 6 to 8' 5 125 Ribes san umeum Red -flowering currant 1 gall 4 to 5' 5 100 25 950 Fourth Comer Nurseries, 3057 E. Bakerview Road Bellingham WA (360) 7340079' Sound Native Plants, P.O. Box7505, Olympia, WA 98507 (360) 943-7026 Woodbrook Nursery, 1620 59th Ave. Gig Harbor WA 98335 (206) 265-6271 4 References 2018 Buckingham, et al., 1995. Flora of the Olympic Peninsula, Northwest Interpretive Association and the Washington Native Plant Society, Seattle, Wash. Cooke, Sarah Spear, 1997. A Field Guide to the Common Wetland Plants of Western Washington and Northwest Oregon. Seattle Audubon Society, Seattle, Wash. Cowardin, L.M.V. Carter, F.C.Goblet, and E.T. LaRoe, 1979. Classification of Wetland and Deep Water Habitats of the U.S. U. S. Fish and Wildlife Service, Washington, D.C. Hitchcock and Cronquist, 1973 2017 update. Flora of the Pacific Northwest. Jefferson County Unified Development Code. March 2008. MacBeth, Div. of Kollmorgen Instruments Corp., 1992. Munsell Soil Color Charts. Pojar, Mackinnon, 1994. Plants of the Pacific Northwest Coast. Reed, Porter, 1988. National List of Plant Species That Occur in Wetlands, Region 9 WMVC. Updated 2017. Washington State Department of Ecology, April 2004. Guidance on Wetland Mitigation in Washington State. Washington State Department of Ecology, March 1997. Washington State Wetland Identification and Delineation Manual, #96-94. Washington State Department of Ecology, August 2004. Washington State Wetland Rating System for Western Washington, Revised #04-06-025. Washington State Department of Ecology, October 2016. Determining OHWM for Shoreline Management Act Compliance in Washington State (Pub 16-06-029). U.S. Corps of Engineers, 1987. Federal Manual for Identifying and Delineating Jurisdictional Wetlands. U.S. Corps of Engineers, 2010. Regional Supplement to the Corps Engineer Wetland Delineating Manual: Western Mountains, Valleys, and Coast Region (Version 2.0 and as updated). U.S. Department of Agriculture, Soil Conservation Service, 1975. Soil Survey of Jefferson County. Web sites: Fish and Wildlife Service, NWI, -http:Ilwetiandsfws.er.usgL ov//wtiindsllaunCh html National Resource Conservation Service, littp:llwebsoilsurvey.nres.usda.gvv/aon/