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Home My WebLink About11 - No Net Loss and Mitigation PlanKarl and Cindy Anderson No Net Loss and Mitgation Plan 401 Griffith Point Road Nordland, WA 98358 Parcel #021 324 004 April 2017 Prepared for: Karl and Cindy Anderson 401 Griffith Point Road Nordland, WA 98358 3EFIFEaSON COU"V ®CE) Karl and Cindy Anderson No Net Loss and Mitigation Plan Parcel #021 324 004 401 Griffith Point Road Nordland, WA 98358 April 2017 Contents Introduction and Project Proposal Shoreline Management Act and Jefferson County Codes Site Description Existing Conditions Vegetation Identified on Site FEMA Habitat and Species Assessment Watershed and Hydrologic Assessment Potential Impact from Proposed Development Mitigation Plan Goals and Objectives Landscape Specifications Installation and Maintenance No Net Loss Practices That Contribute to No Net Loss Monitoring Performance Standards Performance Bond Summary Limitations Appendix Sheet #1 Location, Critical Areas, PHS, Forage Fish Sheet #2 Plot and Mitigation Plan Sheet #3 Photographs Karl and Cindy Anderson No Net Loss and Mitigation Plan Parcel 021 324 004 April 2017 Introduction and Project Proposal Olympic Wetland Resources, LLC has been authorized by Cindy Anderson to prepare a No Net Loss and Mitigation Plan for the proposed shoreline development at 401 Griffith Point Road, Nordland, Washington. The site was assessed on April 13, 2017 to evaluate site conditions and potential impacts to the shoreline of Kilisut Harbor. Areas for mitigation from construction impacts were assessed. The project includes building a new 1,491 sqft home and 484 sqft garage on the parcel that currently has a mobile home with an attached shed. These older structures (total 240 sqft) will be removed. There is an updated and approved septic system on the back of the parcel near Griffith Point Road. The new home will be located —50 feet from the shoreline, this is in concert with homes adjacent to this property and is approved as outlined in the Jefferson County UDC (18.25.410 Residential Development 0)). Shoreline Management Act and Jefferson County Codes The Shoreline Management Act (SMA) provides a policy framework for protecting shoreline functions and the ecology of all shoreline environments. The Jefferson County Department of Community Development (DCD) is currently regulating shorelines according to the Unified Development Code (UDC) and the current Shorelines Master Program (SMP 18.25). The SMP uses guidelines outlined in the SMA to establish the standard of No Net Loss of shoreline functions from new developments. This project falls within jurisdictional shoreline buffers. A Shoreline Substantial Development Exemption is required to address this home and garage built in the shoreline buffer through the Non Conforming Development variance (SMP 18.25.600). When this variance is permitted an equivalent area of shoreline buffer area shall be enhanced through planting native vegetation. Mitigation will be required to ensure project No Net Loss standards. This No Net Loss and Mitigation Plan follow the protocol standards for the protection of critical areas, shoreline ecological, functions and processes (SMP 18.25.270). Documents consulted for this report include the Jefferson County Code, Critical Areas (18.22, 18.22.250, Table 18.22.270). Karl and Cindy Anderson No Net Loss and Mitigation Plan Report File #2017-0413 1 April 2017 All waterfront pr( Washington Dep 150' buffer exten Mark (OHWM) ( Other F)VHCA, I the access drivew jects are also within the jurisdiction and designated buffer requirements of Iment of Fish and Wildlife Habitat Conservation Areas (FWCHAs). This Is landward and is measured perpendicular from the Ordinary High Water efferson County Code, Critical Areas, FWHC, Table 18.22.270, Buffers for scally Important Habitat Areas). The proposed home, garage, and portions of Ly are within the 150 -foot buffer of a FWHCA. Site Description • Legal Description: Parcel 021 324 004 • Section 32 To ship 30N Range IE, WRIA 17 Marrowstone/Indian Island • Location: 401 Griffith Point Road, Nordland, Washington, Jefferson County The Location, Critical Area, Priority Habitat Species, and Forage Fish Maps are included on Sheet #1. The tend t and Mitigation Plan Sheet #2 and Photographs of Site on Sheet #3 are included on at of this report. Existing) Conditions This landscape sl pes gradually from the east property boundary along Griffith Point Road to the west along the shoreline of Kilisut Harbor. There is a rock bulkhead that drops 5 feet in elevation to the OHWM to the shoreline that is accessed by a built-in rock stairway. Kilisut Harbor empties into Port Townsend Bay. The photographs on Sheet #3 indicate existing site conditions. Vegetation Identified on Site The vegetation near the shoreline and the bulkhead consists of mowed lawn and with sparse native vegetation on the side lot boundaries. The eastern portion of the lot has been cleared of most vegetation to accommodate the installation of a new septic. There were no invasive species observed except f Dr a few Himalayan Blackberries. Species identified on the parcel are listed below. Scientific Name Common name Layer Ar utus menziesii Madrona Tree Gaultheria shallon Salal Shrub Mahonia aquifolium Shin Oregon grape Shrub Pseudotsu a menziesd Dou las' fir Tree Rosa nutkana Nootka rose Shrub S m horicar os albus Snowberry Shrub Thuja plicata Western red cedar Tree FEMA Based on the review of the plans and the site visit the construction of the new home and garage are outside the FEMA floodplain. There will be no modification to the floodplain or shoreline. All impacts from construction will occur above the OHWM. There will be no placement of fill on or near the shoreline, and a silt fence will be installed prior to any development to prevent sediment from en erina Kilisut Harbor. Karl and Cindy And son No Net Loss and Mitigation Plan Report File #2017-0413 2 April 2017 Habitat and Species Assessment Habitats of local importance were evaluated within 2 miles of this parcel. All threatened or endangered plant or animal species were recorded and, if possible, surveyed during the April assessment. According to the GIS layer on the web page provided by the Washington Department Fish and Wildlife (WDF&W), there are no spotted owls or marbled murrelets near this parcel. Bald eagles are documented perching or nesting in the surrounding area. There are no sensitive plant species listed in the adjacent landscape. All shorelines within Puget Sound are listed as potential habitat for threated or endangered fish species. The shoreline habitat, haulout beaches, and breeding areas are outside the project area. There will be no adverse effects on fish, animals or surrounding freshwater wetland or marine estuaries. Priority Habitat Species (PHS) mapped near the developed site are listed below. Priority Habitat Species Listed by (WDF&W) for Kilisut Harhor Common Name Scientific Name ESA Status Jurisdiction Habitat Harbor Seal Phoca vitulina WDF& Haulout Surf Smelt Hypomesus pretiosus N USFW shoreline Pacific Sand Lance Ammodytes hexa terus N NMFS shoreline Hardshell Clam N WDF&W shoreline Great Blue Heron Ardea herodias WDF&W Breeding area Bald Eagle Halliaeetus leucoci haluS N NMFS In Area Purple martin Progne subis WDF&W Breeding Area Freshwater and Marine Wetlands and Estuaries WDF&W recorded Watershed and Hydrologic Assessment This parcel drains towards Kilisut Harbor and is within the Indian Island/Marrowstone Island Inventory Area (WRIA 417). The property rises upslope slightly to an elevation of —40 feet above the OHWM as described on the contour map. Surface stormwater drains directly towards Kilisut Harbor and eventually into Port Townsend Bay in the same manner as the neighboring parcels. The high point on the parcel is along Griffith Point Road. During or after construction there will be not alteration to site contours. The new home and garage will include a stormwater plan as regulated by Jefferson County. Karl and Cindy Anderson No Net Loss and Mitigation Plan Report File #2017-0413 3 April 2017 Potential Impacts of Proposed Development All impacts listed are from information provided by Cindy Anderson from Plot Plan Maps. Impacts on the property 27,600 sqft parcel are as follows • the new home will have 1,491 sqft of impervious surface; • the new garage will have 484 sqft of impervious surface; • existing structures, calculated at 240 sqft will be removed. Total impacts are alculated at 1,735 sqft once mobile home and attached shed are removed. Although the 1,600 sqft driveway is additional impervious surface within the shoreline buffer it is not calculated within the area of impact because it has historically been the access to the current dwelling. Mitigation Plan Mitigation requirements have been prepared to meet the standards described in the Department of Ecologv. Guidance on Wetland Mitigation in the State of Washin on (2004 with updates). Replacement ratic s vary according to intensity of impact and functions of buffers in landscape. The shoreline buffers currently have little to no functional value. This replacement will be greater than the 1:1 ratio, for the 1,735 sqft of impacts 2,500 sqft will be revegetated. This area of enhancement will exceed all functions and values of the existing site. Included in this mitigation area is the shoreline adjacent to the bulkhead, impacted areas along the driveway outside septic or drainfields, and the bare area after the removal of mobile home. The trees recommended for the mitigation plan can be planted along the side of the shoreline boundaries so they will not block paths or views from the new home. Goals and Objectives • To locate the home and garage in the least environmentally damaging location relative to the shoreline; • To diversify plant species with native trees and shrubs; • To mitigate construction impacts greater than a 1:1 ratio (2,500/1,735 sqft); • To guarantee the success of the project through the maintenance and irrigation of planted species for at least 3 years until established; • To document compliance with the Mitigation Plan after construction and plantings are complete through annual monitoring by a professional biologist for 3 ears; • To submit an "as built" report to Jefferson County DCD. This report will confirm the implementation of the approved planting plan and will include vegetation descriptions an before/after revegetation photos from established Photopoints and; • To provide a Performance Bond to guarantee the success of the project. Karl and Cindy Anderson No Net Loss and Mitigation Plan Report File #2017-0413 4 April 2017 Landscape Specifications Scientific Name Common Name Size Spacing Location Quantity Acer circinatum Vine maple 2 gal 4 to 5' Both 10 Corylus cornuta Hazelnut 1 gal 4 to 5' shore 15 Mahonia aquifolium Dull Oregon grape 2 gal 3' shore 20 Oemleria cerasiformis Indian plum 1 gal 4 to 5' shore 15 Pinus contorta Shore pine 1 gal 8 to 10' shore 10 Pseudotsu a menziesii Dou las' fir 1 gal 8 to 10' back 10 Ribes sanquineum Red currant 1 gal 4 to 5' shore 20 S m horicar os albus Snowberry 1 gal 4 to 5' shore 10 Thuja plicata Western red cedar 1 gal 8 to 10' back 10 Vegetation planting density is calculated at 10 sq ft per shrub and 50 sq ft per tree. Over 2,500 sq ft will be revegetated with trees and shrubs that are listed for site restoration and coastal erosion control by the Department of Ecology. Over time, planted species will function as additional structural and habitat layers for wildlife in areas of moved lawn and bare soils. No Net Loss This project will have No Net Loss of shoreline ecological functions or processes once the Mitigation Plan has been implemented. Overall conditions will be improved over time and will focus on species diversity, shoreline stabilization, and increased habitat value. There will be no shoreline impacts during construction due to the installation of silt fencing as indicated in the plan. Through project goal and objectives listed below there will be equal or greater protection of the FWHCAs. Practices that contribute to No Net Loss • Revegetating 2,500 sqft of buffer adjacent to the shoreline and upland of the bulkhead (recommended list of species included); • Removal of 240 sqft of existing structures in the buffer (included in revegetation area); Retaining original site contours; • Minimizing impacts to shorelines and buffers as outlined in 18.22.630 Residential Best Management Practices (BMP). 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. 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 Karl and Cindy Anderson No Net Loss and Mitigation Plan Report File 92017-0413 5 April 2017 shrub is moisture and redo project are greatly and shrubs. With ided. Mulch circles help woody specimens become established by preserving ;ing competition for nutrients from grasses. Success rates of a restoration improved when commercial tree protectors are used on newly planted trees .his added protection, mortality is reduced during weeding and deer grazing. Irrigation may be required for the success of planted species through the dry summer months. If the planted species appear to be stressed in the summer months, they must be irrigated. Trees and shrubs require a minimum of 1 inch of water per week or 2 inches every two weeks from July thorough September. Irrigation systems are expensive, and hand watering could be done to ensure that the new trees and shrubs get enough water until they are established. Monitoring Monitoring will determine whether the performance standards identified in this No Net Loss Mitigation Plan are met. The proposed length of time for mitigation compliance is 3 years. This time period will a low for the planted and volunteer native species to become established. Enhancement will be considered successful if the shoreline 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 3. 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 third 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. on -desirable species include Scot's broom, English ivy, and Himalayan blackberry. • Photo will document of the success of this mitigation. Three or four Photopoint locations should show health of planted species over time. • A report will be submitted in the fall at the end of the growing season to Jefferson County DCD. Performance Skandards The monitoring report will evaluate if the Performance Standards listed below are met. • Survivors ip of installed tree and shrub species is expected to be 100% after the first growing s -ason. All plants that do not survive the first year should be replanted. • Survivors ip of installed tree and shrub species is expected to be 80%, species will be replanted antil the monitoring period is complete. • This Miti ation Plan is considered successful if 80% or greater of desirable cover is achieved and the plants are healthy and vigorous during the second 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. on -desirable species include Scot's broom, English ivy, and Himalayan blackbe Karl and Cindy And rson No Net Loss and Mitigation Plan Report File #2017-0413 6 April 2017 Performance Bond Jefferson County DCD requires the Andersons to post a Performance Bond to ensure the mitigation is carried out successfully. This bond will be will be equal to the estimated cost of the mitigation and shall be refunded upon completion of the mitigation and monitoring period. Summary All construction for this new home and garage fall outside the Jefferson County UDC 60' setback but within the 150' FWHCAs and shoreline buffers associated with Kilisut Harbor. For the loss of 1,735 sqft of shoreline buffer over 2,500 sqft will be mitigated on the parcel. The focus of the mitigation will be to revegetate the site with 30 native trees and 100 shrubs along the shoreline adjacent to the bulkhead. Other areas that will be enhanced included the location of the older mobile home (once removed) and near the newly installed septic and drain field. There will be a No Net Loss of ecological functions or processes due to this construction project once the mitigation plan is complete. To guarantee success of the project a Performance Bond will be required. An "as built report" will be submitted to Jefferson County DCD once the new construction is and revegetation plan is complete. Annual monitoring and maintenance for three years will assure the success of this mitigation project. Limitations The final authority over approval of this No Net Loss and Mitigation Plan will be Jefferson County Department of Community Development. Jurisdictional authority over 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. Respectfully submitted, Dixie Llewellin Principal Biologist, Olympic Wetland Resources, LLC. Certified for Wetland Delineation, WTI, 1995 Certified for Wetland Rating and Soil Analysis DOE, 2007, 2010, 2014 Karl and Cindy Anderson No Net Loss and Mitigation Plan Report File #2017-0413 7 April 2017 Olympic Wetland Resources, LLC Title: Location, Critical Area, PHS, Forage Fish 401 Griffith Point Road Scale: As Indicated Sheet 856 50th Street Port Townsend, WA 98368 360 385-6432 Nordland, WA 98358 # 1 Date: April 2017 Client: Karl and Cindy Anderson dixie@cablespeed.com 401 Griffith Point Road In Arae P 1. mertin Job#: WDF&W Nordland, WA 98358 2017-0413 TOPO! map printed on 05/08/02 from "Puget.tpo" and "Untitled.tpg" 122042'00" W 122°33'00" W WGS84 122°17'00" W t'F J0 0 z z 0 z IN TN# /MN 19. or I �� 1 �I r y z - "(, 89 4 AUS m A (� Min c � � e \ " Uaw1e,F lui le EVE v Hay —OK 122°42'00" W 122°33'00" W WGS84 122°17'00" 0 5 10 is miles 0 5 10 15 20 25 km Printed from TOPO! 01999 Wildflower Productions (w topo cam) , HarcL:hell Clam N WDF&W shoreline Great Blue Hemp Ardea herodias WDF&W Breeding area Bald FW. Halliaeetus leucooi IuS N NMFS In Arae P 1. mertin Pro subis WDF&W Breeding Aran Freshwater and Marine Wetlands end Estuaries WDF&W recorded Z 0 0 Parcel 021 324 004 Parcel Jefferson County Interactive On-line Map Green is mapped wetland Silt Fence Shore pines on edges ndian plum, Oregc d Red -flowering h ro � Haz lnut, Oregon Graph � '- and 'ed -flowering curra - Porch and Approximate location Mobile Home of Bulkhead , to be removed Shore pines 220 sqft on edges — 290' Garage New home 484 sqft 1,491 sgft J Douglas fir, Cedars and vine maple (to be planted in bare areas) Area of Impact 1,735 sqft r Mitigation Area 2,500 sqft 276' Landscape Specifications Scientific Name Olympic Wetland Resources, LLC Title: Plot Plan and Mitigation Plan 401 Griffith Point Road Nordland, WA 98358 Scale: As Indicated Sheet Date: Aril 2017 p w � 856 50th Street Port Townsend, WA 98368 360 385-6432 dixie@cablespeed.com Vine maple 92 Client: Karl and Cindy Anderson 401 Griffith Point Road Job #: 10 Nordland, WA 98358 2017-0413 1 gal Parcel 021 324 004 Silt Fence Shore pines on edges ndian plum, Oregc d Red -flowering h ro � Haz lnut, Oregon Graph � '- and 'ed -flowering curra - Porch and Approximate location Mobile Home of Bulkhead , to be removed Shore pines 220 sqft on edges — 290' Garage New home 484 sqft 1,491 sgft J Douglas fir, Cedars and vine maple (to be planted in bare areas) Area of Impact 1,735 sqft r Mitigation Area 2,500 sqft 276' Landscape Specifications Scientific Name Common Name Size Spacing Location Quantity Acer circinatum Vine maple 2 gal 4 to 5' Both 10 Corylus cornuta Hazelnut 1 gal 4 to 5' shore 15 Mahonia aquifolium Dull Oregon grape 2 gal 3' shore 20 Oemleria cerasiformis Indian plum 1 gal 4 to 5' shore 15 Pinus contorta Shore pine 1 gal 8 to 10' shore 10 Pseudotsu a menziesh Douglas' fir I gal 8 to 10' back 10 Ribes sanquineum Red currant 1 gal 4 to 5' shore 20 S m horicar os albus Snowberry 1 gal 4 to 5' shore 10 Thuja plicata Western red cedar 1 gal 8 to 10' back 10 ° Olympic Wetland Resources, LLC 8565othsveet '\ Port Townsend, WA 98368 360 385-6432 dixie@cablespeed.com Title: photographs 401 Griffith Point Road Nordland, WA 98358 Scale: As Indicated Sheet #3 Date: April 2017 Client: Karl and Cindy Anderson 401 Griffith Point Road Nordland, WA 98358 Job #: 2017-0413 Parcel 021 324 004 OHWM of Kilisut Harbor (� 5 foot drop in elevation to shoreline) Near Location of New Homesite (-60' back from shoreline) Stairway Access to Shoreline Looking Down Driveway Access (Mobile and porch to be removed)