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Home My WebLink AboutHabitat Management Plan 921081015Holly Residential Development Critical Areas 5tewarJskip Plan (CA5P) 5 1 23 I lagler Rd, Marrowstone Island, WA 98358 Jc{ferson County Farcel 92 108 10 1 5 For glaise Holly 2211 Rose St FortTo a nJ WA98568 Fe6ruarg 20, 2016 MARINE SURVEYS & ASSESSMENTS 267 Hudson Street Port Townsend WA 98368 (360) 385-4073 mari ne.s urveys.i nce-gmai f. corn MAR 0 1 2016 JEFFERSON COUN7y DCD 7( i gip: �,;%1( s','4i. � ;Ir��,` fr. „ .�.:,_ Contents I. PROJECT LOCATION AND INFORMATION........ ................. ............3 2. PROJECT AND SITE DESCRIPTION .................................................................................3 3. CRITICAL AREAS ASSESSMENT......_....................:.............._..._...........................................:...._......4 3.1 Species and Habitat.............................................................................................................................4 3.2 Effects and Net -Loss Analysis .....................................................................................4 4. CRITICAL AREAS STEWARDSHIP PLAN: MITIGATION AND MANAGEMENT PROPOSAL ... 5 4.1 Mitigation Plan....................................................................................................................................5 4.2. Performance Standards......................................................................................................................6 4.3. Monitoring Plan.................................................................................................................................7 4.4. Maintenance and Contingency......................................................................................8 FIGURES..........................................._.................._..........................._....__............._ ....9 ............................... Figure1. Vicinity Map ............... ....... .._.............. ............................... ._.............................. .............9 Figure2. Site Plan ......................................................... ...................................... ........... ..... ___ ............ 10 Figure 3. Site Photo: Proposed Building Footprint Location ................... 11 Figure 4. Site Photo: Maple Proposed for Removal . ..........................................................12 Figure 5. Site Photo: Spurge Laurel................._...._....................._..—...................._......... 13 Figure 6. Site Photo: English Ivy............................................................................................................ 14 Figure 7. Site Photo: Scotch Broom........................................................................................................ 15 Figure8. Mitigation Planting Plan .............................. __............................._..._................................._... 16 Marine Surveys & Assessments Holly GASP Z 1. PROJECT LOCATION AND INFORMATION Site Address: 5123 Flagler Rd. Marrowstone, WA 98358 Legal Description: Section: 8 NEIA, Township: 29 N, Range: 01 E Parcel Number: 921081015 County: Jefferson County Latitude & Longitude: 48°0.1'22.61"N, 122°41'46.13" W Waterbody: Scow Bay, Kilism Harbor Please see Figure ]for a vicinity map. Proponent Information Name: Blaise & Holly Holly Phone: (360) 301-9779 Contact Address: 2211 Rose St., Port Townsend, WA 98368 Biologist Information Name: Nam Siu, Marine Surveys & Assessments Credentials: M.Sc. Marine Biology and 5 fives experience Phone: (360) 3854073 Email: marine.surveys.inc@gmail.com Contact Address: 267 Hudson St, Port Townsend, WA 98368 2. PROJECT AND SITE DESCRIPTION This project is located on a 0.5 acre of land at 5123 Flagler Rd on the south end of Marrewstone Island on the shoreline of Scow Bay. The 0.5 acre of land is part of a greater 6 acre parcel (#921081015) that is bisected by Flagler Rd, the majority of the parcel is east of the road, while the 0.5 acre there the project is proposed is west of the road (Figure 2). The shoreline at the project location is designated as a Type S buffer according to Jefferson County Critical Areas Ordinance and requires a buffer of 150 feet from the OHWM per the Jefferson County Code 18.22.270. The proposed single family home footprint is well within this buffer and as such a buffer reduction is necessary. This Critical Areas Stewardship Plan (GASP) serves to provide a baseline of the habitat and environmental conditions at the project location, assess the potential impacts of the proposed project, and provide mitigation planting to offset those impacts as well as for the reduction of the fish and wildlife habitat conservation area (FWHCA) buffer. A single family home is proposed at the western 0.5 acre on this pamet and is setback 50 feet from the top of a bank to the west. The FWHCA buffer at this location is 150 feet from the ordinary high water mark (OHWM) and most of the approximately 1,400 square feet proposed building envelope is within this buffer with the greatest buffer reduction being 40% resulting in reduced buffer width of 90 feet. As per recommendations from a Geotechnical report done at the site, the building envelope is setback 50 feet from the top of the bank Per Stratum group (Figure 2). The location of the building footprint is located in a relatively unvegetated meadow in the middle of the 0.5 acre area above the bank (Figure 3). Only one Big Leaf Maple tree (Figure 4) Marine Surveys & Assessments Holly CASP and several sapling firs and cedars will have to be removed in this meadow to accommodate the proposed single family home. Other than the one large tree, saplings, and understory plants to be removed from the building footprint, a majority of the plants on the site will be retained and protected from construction impacts. Additionally all of the plants on the bank will also be retained and vegetation buffer of 50 feet will be maintained from the top of the bank/bluff or edge of the Landslide Hazard Area. 3. CRITICAL AREAS ASSESSNIFTNT 3.1 Species and Habitat Vegetation noted on this 0.5 acres west of Flagler Rd within the FWHCA buffer includes: Douglas fir, Western Red Cedar, Big Leaf Maple, Grand Fir, Madrona, Ocean Spray, Oregon Grape, Salal, Sword Fem, two rose species, grass sp., Yarrow, and Honeysuckle. Several non- native and invasive species of plants were observed, these included: Spurge laurel (Figure 5), English Ivy (Figure 6), Scotch Broom (Figure 7), and English Holly. These non-native and invasive species are proposed for removal in the following section on mitigation. No species of animals were observed during the site visit. The project site was assessed using Washington Department of Fish and Wildlife's (WDFW) Priority Habitat and Species (PHS) as well as National Oceanic and Atmospheric Administration's (NOAA) Environmental Response Management Application (ERMA) online interactive maps. No habitat for federal or state critically, threatened, or endangered species exists on or near the project site. The habitat at the project site can be described as a western Washington shoreline and lowland forest of moderate plant density. The species of plants within the project site is provided above. Jefferson County maps designate this shoreline as "natural', however immediately north of the property boundary at this site the shoreline is designated as "residential". Single family homes occupy both neighboring parcels to the north and south. County and State maps indicate the presence of an estuarine and marine wetland on the shoreline of the property below the bank. 3.2 Effects and Net -Loss Analysis Based on the information gathered during the two site visits to the project location by Marine Surveys & Assessments scientist, as well as research of county, state, and federal maps and databases; we determinate the overall effects and impacts of the project will be minimal and temporary. This is because the proposed footprint of the single family home is located in the least vegetated area on the property. Additionally the mitigation plan proposed below will offset the removal of the one large trees as well as reduction of the FWCHA buffer by enhancing the buffer habitat and stabilizing the bank through removal of non-native invasive plant species and replanting of native riparian plant species. Given the pmposed 1,275 square feet proposed for intensive mitigation as well as sporadic mitigation throughout the rest of the 0.5 acres west of Flagler Rd, we anticipate that no net -loss of ecological functions will occur as a result of this proposed project. Marine Surveys & Assessments Holly CASP L�, d. CRITICAL AREAS STEWARDSHIP PLAN: MITIGATION AND MANAGEMENT PROPOSAL 4.1 Mitigation Plan Mitigation is required for this site, as the proposed structure will be reducing the buffer for a shoreline of statewide significance. The proposed mitigation for this site is to enhance the area between the structure and the ordinary high water mark and thereby increasing the ecological functions of the site by creating habitat and increasing bank stabilization. The specific focus will be in the area 50 feet east of the top of the bluff and across the entire width of the 0.5 acres west of Flagler Rd (approximately 90 feet) and the slope below the top of the bluff on the north side of this area. Non-native invasive plant species will be removed and a multitude of native plant species will be placed. There are two areas in which heavy planting will take place, the slump area on the slope near the northern property boundary and a strip along the southern boundary (Figure 8). The slump area will be planted with species that are conducive to erosion control on Yin 6centers. The strip on the southern boundary is heavily infested with spurge laurel (Daphne laureola). All laurels will be removed and the area will be re-established with natives that are planted on F to 6' centers. There is laurel scattered throughout this buffer area. All laurels are to be removed and each laurel removed, will be replaced with a native. At least 20 laurels were counted during the site visit on 1/15/2016. The best control method for the invasives is hand removal. The plants selected for this site are all native plants that can tolerate salt spray from a marine environment. They were selected to improve the overall value of the functions in this critical area buffer. Soil stability, nutrient input and wildlife habitat were all important factors. Following is a table showing the plant species and numbers for the planting area. Plants will be selected from a regional native plant nursery and the Jefferson County Conservation District. Plant List Quantity Botanical Name Common Name 5 Acer cercinatum * vine ma le 5 Amelanchier alnifolia serviceb 15 Arctosta h los uva-ursi kinnikinnick MBareRoot 5 Betula a ri era a er birch 5 Comus nuitallii acific do ood 6 Malus ca acific crabs le 5 Philadel hus lewisu mock orange Bare Root 5 Physocarpus ca itatus pacific ninebark Bare Root 5 Pain contorts -contorts shore pine Bare Root 5 Pod stichum munitum * sword tem 1 Gallon 5 Quercus Karr ana Ore _on white oak Bare Root 5 Rhododendron macro h [lura 2acific rhododendron Plugs l0 Ribes sanguineurn red flowering current Bare Root 5 Rosa nutkana * nootka rose 1 Gallon 5 S T 'ar os albus * common snowberry 1 Gallon 5 Yaccinium ovali olium blue huckleb Plugs t0 Yaccinium ovatum evergreen huckleberry Plugs . Plants to be used in the slump area (Figure 8) Marine Surveys & Assessments Holly CASP 5 Plants should be installed in late fall or early spring following the construction work. During these times plants are semi -dormant and soils are easier to work. Plants will be laid out by hand and planted on 5' to 6' centers in two measured areas as shown on the planting plan map (Figure 8). In addition to planting designated areas, all Spurge Laurels on the 0.5 acres west of Flagler Rd will be removed and each one will be replaced with a native. In addition to the numerous Spurge Laurels in this area, English Ivy was found growing up one tree (Figure 6) and one large Scotch Broom (Figure 7) should also be removed and replaced with natives. The placing of native species will be left up to the discretion of the landowner who is an experienced Horticulturalist. The plants will be installed by digging a one to two foot hole, loosening the soil, placing plant in ground after loosening soil around root ball. The hole must be deep enough to ensure that roots are straight, but not so deep as to bury plants too far above the mot collar. Once the plant is in place the hole will be backfilled and tamped lightly. Mulch should be applied 3" deep around plants, being careful not to touch stem of plant. No extraordinary measures we proposed at this time to protect the installed plants other than mulching, weeding and watering. Substitutions might be necessary for species or individuals that cannot be found at local nurseries. All plant substitutions will be approved by the project biologist prior to installation to ensure their suitability for the site. 4.2. Performance Standards Performance standards are measurable criteria for determining if the goals and objectives of the mitigation project are being achieved. If the proposed benchmarks are not achieved by comparing the surveys to the mitigation goals, then contingency plans will need to be implemented. Performance Standard # 1 (survival rate): Immediately after planting, all plants will be counted and documented. Individual plantings that replace laurel will need to be flagged and numbered in order to keep track. At the end of each growing season (late Aug- early Sept) plots will be visited and a count of surviving plants will be documented. The percent survival for the plots will be calculated by dividing the total number of plants after planting by the total number of surviving plants at the end of the season. Photo stations for each replanting site will be determined and a photograph of each transplant location will be taken on an annual basis. Individual plants that die most be replaced with native species in order to meet the survival performance standards. Performance Standard # 2 (percent cover): The percent cover standard will be monitored by looking at each monitoring unit of the enhanced areas from above and estimating the area covered by the individual species. The percent cover within an area can be quantified as a total greater than 100% because plants (trees, high/low shrubs and herbaceous layers) overlap in cover. Performance Standard #3 (invasive removal): All areas where invasive plants were removed will be surveyed visually and categorized with photo stations. This is to ensure that 0% (none) of the targeted invasive species (Daphne laumola) will be present and have not reestablished within each monitoring year. Marine Surveys & Assessments Holly CASP 4.3. Monitoring Pian .An as -built drawing and report will be submitted as documentation of the implementation of the approved planting plan within one month of installation as per Jefferson County Code, Article LX (18.22.460). The plan will include vegetation description and photo documentation from established photo stations. A panoramic photo of the entire mitigation site will also be provided. Photos should be taken June - August, during the growing season. Monitoring will take place over a period of five years at the end of the growing season (late August or early September) of each monitoring year. The performance standards will be monitored by measuring plots in zones within the planting area that will be established and mapped after planting occurs, on the as -built plan. There will be photo points for each plot and they will be referenced on the as -built plan. Each year, the photo points that are established at each site, will be used for comparison. Photos will be taken at all points for all years as visual documentation of the performance standards progress, or lack of. In addition to photos at designated points, photo documentation most include a panoramic view of the entire planting area or individual areas. Submitted photos must be formatted on standard 8 1/2 " by I I" paper, dated with the date the photo was taken, and clearly labeled with the direction from which the photo was taken.'I he photo location points must be identified on an appropriate drawing. Collected data and photos will be compiled into an annual Riparian Planting report each year and submitted by November 30 of each monitoring year for five years. Each annual monitoring report shall include written and photographic documentation on plant mortality and replanting efforts and must document whether the performance standards are being met. Monitoring results will determine whether or not contingency measures will be needed. Performance Standards #1 & 2 Year 1: Achieve 100% survival success of replanted natives into mitigation areas Year 2: Achieve 100% survival success at end of second year into mitigation areas Yew 3: Achieve 80% survival success at end of third year into mitigation areas Year 4: Achieve 80% survival success at end of fourth year into mitigation areas Year 5: Achieve 80% survival success at end of fifth year into mitigation areas Performance Standard #3 Year L Achieve 100% removal of targeting invasive species from mitigation areas Year 2: Achieve L00% removal of targeting invasive species from mitigation areas Year 3: Achieve 100% removal of targeting invasive species from mitigation areas Year 4: Achie4e 100% removal of targeting invasive species from mitigation areas Year 5: Achieve 100% removal of targeting invasive species from mitigation areas Marine Surveys & Assessments Holly CASP % 4.4. Maintenance and Contingency Maintenance shall occur at least twice during the growing season to ensure the survival of all native species within the mitigation area, including volunteer natives. Watering by hand or sprinkler may be necessary during year number one until the plants are established. Water requirements will depend on the timing of planting with the seasons and weather conditions. Once plants are established, extra watering may not be necessary. Hand weeding will be necessary around all plants that are being monitored for survival and coverage. If the required survival rate is not met by the end of any monitoring year, plants lost to mortality will be replaced to achieve the percentage cover performance standard described above. Prior to replacement, an appropriate assessment will be performed to determine if the survival was affected by species/site selection, animal damage, or some other factor. Subsequent contingency actions must be designed to respond directly to the stressor(s), which are increasing mortality of planted native species. If a particular species is shown not to endure site conditions then another, more appropriate species will be selected. If excessive damage is observed, protective measures will be introduced. Monitoring years may be added if significant re -planting becomes necessary. Monitoring on an annual basis for five years will occur with photographs to determine the survival rate of the transplanted area. If 100% success is achieved before reaching the five-year mark, monitoring will continue without extra replanting efforts. Within the five year time period, transplanting will occur on an annual basis to replace any plants that are lost until 100% success is achieved. Marine Surveys & Assessments Holly CASP Fi, :U ES 1 Fra se k Ftayi Rd 1 M,romstore stand WA 9fy753 " V G AY Map � 1 - .t t or y y J�?4roject Location \ 1 1! \ 0 N A e Marine Surveys & Assessments Holly CASP 9 Figure 2. Site Plan Marine Surveys & Assessments Holly CASP 10 pP wts {Y LLJ Ik—'I -D.^i'`s ]M 4YI�Yp 91pV LLWi AR MVl/ LS P/YdL � J 9 a�.{Y � [� r fs Marine Surveys & Assessments Holly CASP 10 pP wts {Y LLJ Ik—'I -D.^i'`s Marine Surveys & Assessments Holly CASP 10 LLJ i LLJ fs ey j � •;�,_ t W e r a � i `9 Marine Surveys & Assessments Holly CASP 10 it jd •T' t);7 --- ,k r b s44 -- Figure S. Site Photo: Spurge Lau reel �►� k -l j ,7 R s WWI titer Maxine Surveys & Assessments Holly CASP 1 3 r�. j h l :r 1 � f 7. Site Photo: Scotch Broom Marine Surveys & Assessments Holly CASP j TOP OF 5LO 5a SETBACK FROM TOP OF SLOPE TO TUILDING ENVELOPE 150 SETBA FROM. OHN Figure N. Mitigation Planting Plan HOLLY PLANTING PLAN 2416 OF = EXISTING D. FIR O_ EXISTING MAFLE = SLUMP AREA ON SLOPE Ole M(aVERtOn Sn LSEPLANc NATIVE SPECIE5 CONDUCIVE TO EROSION CONTROL ( SH UBS, 19 CENTERSFCP TREES) -REMOVE LAUREL (Av INJAOX 650 ED SF WITH LAURELUREL&X AN SF) REMOVE LAt1REl3 PLANT NATIVES ON 5 CENTERS - 20 TO 26 SHRUBS ORS PO` CENTERS FOR TREES AREA WITH ABUNDANTNATIVES 3 SPORADIC LAUREL REMOVE LAUREL PLANTS 3 REPLACE EACH ONE WITH A NATIVE SPECIES NOTE- 17 NA FIVE SPECIES HAVE TEEN SELECTED FOR THIS SITE INCLUOtW THREE SPECIFICALLY FOR SLUMP AREA. (SEE DETAIL IN PLANT TABLE) —1175FROM OH WM Marine Surveys & Assessments Holly CASP 16 Ya