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HomeMy WebLinkAboutHMP - HMP Habitat Managment Plan - 5/7/2019 RECEIVED ` JAN 2 2 2020 M 14V 615 W. Alder Street ROOSENDAAL HABITAT MANAGEMENT PLAN 12681 NE North Shore Road Belfair, Washington Parcel No. 32235-50-00006 May 7, 2019 Sound Native Plants Prepared by Ben Alexander Senior Restoration Ecologist Sound Native Plants PO Box 7505 Olympia, WA Prepared for Cheryl Roosendaal a a Introduction This Habitat Management Plan has been prepared to meet the requirements of Mason County shoreline regulations. The property owner Cheryl Roosendaal has proposed enlarging an existing home on Puget Sound. The proposed mitigation for the proposed project includes removing artificial structures from the intertidal zone, and planting native vegetation in the shoreline zone designed to improve surface runoff water quality, increase shade and overhanging vegetation, and increase riparian habitat. Background The project site is located in Mason County at 12681 NE North Shore Rd, Belfair, Washington (Parcel No. 32235-50-00006). The project site is located on the shores of Puget Sound, on the east side of Hood Canal in WRIA I S. The site is zoned Rural Residential 5, and the shoreline designation is Residential. Purpose The purpose of the proposed project is to improve accessibility in the home while minimizing environmental impacts and improving the shoreline habitat at the site. Project Description The proposed project is the remodeling of the existing home on the site in order to accommodate a first-floor bedroom and replace the existing spiral staircase with a staircase that meets current codes,in order to make the home more accessible. These improvements will require expanding the existing footprint by 168 square feet of area in the shoreline zone. The proposed expansion area is currently pavement and bare ground, with one ornamental shrub. To mitigate the impacts of the proposal, a portion of existing concrete patio, pieces of concrete and treated wood retaining structures, and an existing boat-launch trolley will be removed from the shoreline zone at the west end, and the area will be planted with native vegetation to provide screening, overhanging vegetation, and stormwater treatment. In addition, a portion of an existing wood deck that overhangs the ordinary high water(OHW)line at the east end will be removed and native vegetation will be planted there. These measures will provide 400 square feet of mitigated shoreline area. Timing Removal of the boat trolley will occur between July 15 and September 15 in order to avoid impacts to surf smelt. Removal of upland structures will occur between July 15 and September 15 in order conduct ground-disturbing activities during the dry season. Planting will occur between October 15 and February 28 to improve the plant establishment. 1 Anticipated Impact Area The affected area includes both the immediate project site as well as adjacent areas that may experience effects resulting from the project. Immediate impacts are expected to be highly localized, caused by construction activities. The only work to occur below the Ordinary High Water Line will be removal of some small diameter pilings that support the boat trolley rails, which can be completed using hand tools only. Removal of the piling could result in temporary, localized increase in turbidity when the die is up, but the effects will be negligible because this work will be performed during low tide when the site is dry. The proposed project will not result in any loss of riparian buffer habitat because the area where the home will be enlarged has already been cleared and paved. The primary anticipated impact will be noise from construction activities, which will occur on—site and will affect the surrounding area. The noise impact will be temporary and will be mitigated by limiting construction to daylight hours. Listed Species and Priority Habitats The affected area includes potential habitat for these species listed under the federal Endangered Species Act as either threatened or endangered: yellow-billed cuckoo (Coccyzus americanus), Puget Sound Chinook (Oncorhynchus tshowytscha), Hood Canal summer-run chum salmon (Oncorhynchus keta), yelloweye rockfish (Sebastes ruberrimus), and bocaccio (Sebastes paucispinis). Critical habitat has been designated for all these species except the yellow-billed cuckoo. None of these species are likely to be affected by the proposed action. The threatened yellow-billed cuckoo population occurs primarily in the Willamette and Columbia River basins, where it utilizes riparian habitat comprised of dense willow and cottonwood stands on river floodplains. Dewatto Creek is the closest stream with summer chum runs in the western Kitsap portion of Hood Canal. It is about 9 miles from the project site, and chum salmon mainly use the estuaries close to spawning streams. Puget Sound Chinook also mainly use the estuary areas with cover and vegetation, which does not exist on or near the affected area. Both rockfish species occur infrequently in the Great Bend portion of southern Hood Canal, and the critical habitat there consists of deep water sites greater than 30 meters and near shore juvenile rearing sites, mainly areas with floating or submerged kelp, neither of which occur on or near the affected area. The affected area for this project is outside the designated critical habitat area for the following listed species: bull trout (Salvelinus confluentus), marbled murrelet (Brachyramphus marmoratus), and streaked horned lark(Eremophila alpestris strigata). The affected area encompasses breeding habitat for surf smelt (Hypomesus pretiosus)which has been designated by the Washington Department of Fish and Wildlife as a priority habitat. The WDFW maps depict estuarine and marine wetlands near the affected area, and possible presence of Dungeness crab and oyster beds. No other priority habitats or species occur in the affected area. Mason County codes contain a species of local importance list, with some other species that could occur in the affected area, including coho (Oncorhynchus kisutch), Olympia oyster (Ostrea 2 conchaphila), geoduck Panopea abrupta, littleneck clam (Protothaca staminea), bald eagle (Haliaetus leucocephalus), common loon(Gavin immer), great blue heron(Ardea herodias), hooded merganser (Lophodytes cucullatus), and western grebe (Aechmophorus occidentalis), although there are no recorded occurrences there. The species most likely to be affected by the proposed action is surf smelt, because the site contains surf smelt breeding habitat. Because surf smelt are forage fish for other aquatic species including chum and chinook salmon, impacts to surf smelt could indirectly affect these other species. Analysis of Impacts Potential impacts from the proposed action include direct impacts,indirect impacts, and cumulative impacts. Direct impacts result from the spec activities on the job site. Indirect impacts are those impacts that occur later in time as a result of the proposed activity. Cumulative impacts are effects that occur in the future from the combined impacts of activities that occur over time. Potential direct impacts from the proposed project increased noise and turbidity, disturbed beach substrate, and water pollution. There would be virtually no vegetation impacts from the proposed action because the affected area has no existing vegetation except for one ornamental shrub. The proposed action is unlikely to have indirect impacts, and cumulative impacts are difficult to predict. Noise. The proposed house remodeling will require a construction crew to use power tools, trucks will be used to deliver supplies and haul away construction debris. Removal of the boat trolley and a portion of the deck will also require the use of power tools. These activities will cause intermittent increased noise levels during the construction of the home. There will be no long-term changes to noise levels. Noise is unlikely to have any impact on sensitive species in or near the project site. Turbidity. The boat trolley will be removed using hand tools and small equipment. The trolley is supported on piers buried in the beach substrate. The trolley supports will be cut off and removed. This work will occur during low tides when the piers are above the water level. There may be small disturbed patches of gravel and substrate a few square feet in size, in the immediate vicinity of the trolley supports, which could possibly increase turbidity when the tide comes in,but the effects would be insignificant because the area is so small. Other Beach Disturbances. Removal of the boat trolley will require workers to walk, kneel, and carry tools and debris on the beach while the tide is out. These activities could impact surf smelt roe in the intertidal portion of the beach. This impact would be temporary; it is unlikely that these activities would have any lasting or long-term impacts on surf smelt. Water Pollution. There will be vehicles and equipment present on site during construction,which could cause pollution if there is a fuel or oil leak that runs off the site. 3 Best Management Practices Best Management Practices(BMPs) are techniques used to minimize the impacts of construction and development activities on sensitive natural resources. For the proposed project, construction will comply with all conditions required by the HPA provisions from the Washington State Department of Fish and Wildlife. In addition, the following BMPs will be implemented. l. Construction will be limited to daily hours to reduce noise impacts. 2. Equipment will be cleaned and inspected for leaks before starting work every day. 3. Sediment controls will be installed prior to any ground-disturbing work to prevent any sediment from running off the site. 4. If the existing bathroom is not available, the contractor will provide a portable toilet. S. The contractor will provide an appropriate spill control kit when equipment is on-site. In the event of a spill or fish kill, WDOE and/or WDFW will be notified immediately. ESA Compliance Takes sis. The Endangered Species Act prohibits take of endangered or threatened species, which is defined as to harass,harm, pursue, hunt, shoot, wound, trap, capture, or collect listed species, or attempt to engage in any such conduct. Harm is defined as a significant habitat modification or degradation that actually kills or injures listed species. Harass is defined as an intentional or negligent act which creates the likelihood of injury to wildlife by annoying it to such an extent as to significantly disrupt normal behavior patterns which include, but are not limited to, breeding, feeding, or sheltering. Determination. Determination of effects can include: adverse effects likely; may affect, not likely to adversely affect; or no effect. May affect, unlikely to adversely affect is applied when effects on the species or their critical habitat are expected to be beneficial, discountable, or insignificant. The proposed action for this project has been determined to have no effect on some listed species, and may affect, not likely to adversely affect for the other listed species,based on a review of existing data and information, as long as the best management practices and procedures described above are followed. The proposed project may impact individual listed species in the project area but it is not likely to adversely affect or jeopardize the continued existence of those species or their designated Critical Habitat. It is extremely unlikely that any"take"will occur. The proposed action with mitigation will result in a net improvement for the habitat of the listed species. The determination of effect for each of the listed species is: • Yellow-billed cuckoo - No effect • Puget Sound ehinook-May affect, not likely to adversely affect • Hood Canal summer-run chum salmon- May affect, not likely to adversely affect • Yelloweye rockfish-May affect, not likely to adversely ofeet • Boeaecio- May affect, not likely to adversely affect 4 • Bull trout- No effect • Marbled murrelet- No effect • Streaked horned lark- No effect Mitigation Plan Goals and Objectives The goal of the mitigation plan is to improve the riparian and nearshore habitat on the project site. The specific objectives are to increase native vegetation cover in the riparian zone, provide water quality treatment for runoff, and minimize impacts to surf smelt. Summary of mitigation actions Mitigation will consist of removing the existing boat trolley and a portion of the existing deck, and planting native riparian vegetation in the areas where structures are removed. The boat trolley removal area will be converted to a vegetated swale to retain and treat runoff from the driveway. The deck removal area will be planted with native tall shrubs. These actions will result in a net increase in native riparian vegetation cover of 150 square feet, and an additional 6S square feet of improved intertidal habitat. Mitigation work will be timed to minimize impacts to surf smelt or shoreline habitat. Boat Trolley Removal Area The boat trolley runs down along the west side of the property, occupying a narrow strip of uplands about 5' wide by 44' long. The trolley consists of two metal rails,bolted to concrete pads, which extend out onto the intertidal area.Just upslope of the rails, a wooden enclosure houses a cable hoist mechanism. The area under the rails consists of hard-packed mineral soil, gravel and concrete debris that steps down toward the bulkhead in a series of small terraces built up with a combination of old railroad ties and broken chunks of concrete. The driveway and paved area drains directly onto this area. The entire trolley and hoist mechanism will be removed, including the rails that extend into the intertidal zone (144 square feet), the rails in the uplands and the hoist mechanism(100 square feet). All the work below OHW will be performed during low tide, using hand tools only, with no heavy equipment needed. The work will be timed to avoid the surf smelt spawning season according to the requirements from WDFW. After the trolley has been removed, the various concrete chunks and debris will be removed, and the strip will be converted to a water quality swale. Gravel and debris will be shoveled out and replaced with the sand and peat soil mix specified by the Department of Ecology for bioswales and raingardens. Coir logs will be installed across the swale to help retain water and soil. The swale will be planted with native species to improve water quality treatment and habitat. 5 Concrete Removal Area Near the northwest comer of the deck, a portion of the concrete patio roughly 97 square feet in area will be removed. The soil in this area will be amended as needed to create a good planting medium, then covered with a layer of woody mulch and planted with native riparian shrubs. Deck Removal Area The existing deck is a low wooden structure supported on beams placed directly on concrete blocks sitting on the ground behind the bulkhead. The deck overhangs the bulkhead and spans the entire width of the existing home. Linder the deck, the area behind the bulkhead consists of mineral soil, likely fill material from excavations during the original construction. At the east end, the deck will be pulled back 5 feet, which will remove about 67 square feet of impervious structure from the shoreline zone, and create a plantable area of 50 square feet (the difference is due to the fact that some of the deck overhangs OHW where planting is not possible). The soil in this area will be amended as needed to create a good planting medium, then covered with a layer of woody mulch and planted with native riparian tall shrubs. Maintenance In the initial plant establishment period, the planted areas will be watered once per week during periods of hot, dry weather(typically June or July through September). Watering will be performed as needed for at least the first three seasons after planting. All planted areas will be inspected for invasive weed growth at least 3 times per growing season. Invasive species most likely to occur include Himalayan blackberry, English ivy and Scotch broom. Invasive species will be removed or controlled using manual methods if possible. If herbicide treatment is required, it will be performed by a licensed commercial pesticide applicator with aquatic endorsement, using only aquatic-approved herbicides. The swale will be inspected by the homeowner at least four times per year, to check for erosion, sediment build-up, and plant health and vigor. If sediment buildup exceeds 4"depth, the sediment will be removed using hand tools and disposed in a landfill. If erosion is observed, corrective measures will be implemented, which could include additional planting, installation of jute netting, or additional coir logs. If plant mortality is observed,the dead plants will be replaced with same species or other native plants appropriate to the site conditions. Native grasses or emergents may occasionally need to be replaced or augmented to maintain adequate cover. Monitoring The performance standards for the project will be: 1. 100%survival of trees and shrubs at the end of each monitoring period 6 2. No more than 5%invasive species cover at the end of each monitoring period 3. 20% native vegetation cover of the swale at the end of year 1 4. 40%native vegetation cover at the end of year 2 S. 80%native vegetation cover at the end of year 5 g y An"As-Built"report will be submitted to the county, depicting the location of planting and including a list of installed plant materials and photos of the site. The site will be inspected by a qualified professional consultant at the end of the 1", 2°d and 5d'growing season following installation. Results of each site inspection, including project photographs, and recommendations to improve project success will be summarized in monitoring reports and submitted to the county. Reports will specify corrective actions for all failed performance standards. Estimated Cost of Mitigation Installation Materials & Expenses $1,795.00 Labor $1,185.00 Maintenance Materials & Expenses $75.00 Labor $775.00 Monitoring Labor $4,800.00 Total $7,630.00 7 SITE PHOTOS: Photos 1-4 depict mitigation area to be converted to vegetated swale for habitat and water quality improvement; Photos 5-6 show deck area to be replaced with riparian shrubs. - Photo 1:Lower trolley area Photo 2:Boat hoist Photo 3:Middle trolley area Photo 4:Drivewa / aved area drains to trolle fi f q� �.1 _ Mlllf i �4 s' 1iS-r sk' Photo 5:Deck area to be removed Photo 6:Area under deck to be removed 8 Attachment 1 Roosendaal Project Site Location ;, M h :1 F ,7 r1 1- �� t t Tahuya 5"'r �r '�dt_ �pl t(1 ciy1 C?4C 12681 NE North Shore Rd Belfair, Washington Parcel No. 32235-50-00006 ",,ober Tides Dt s SkLk 4/24/2019, 11:11:23 AM 1:24,502 _ 0 0.2 0.4 0.8 mi J County Boundary i ' '—+ N 1, 0 0.33 0.65 1.3 km Sources! Esri, HERE, Garmin, USGS, Intennap, INCREMENT P, NRCan, Earl Japan, METI, Earl China (Hong Kong), Earl Korea, Esd (Thailand), NGCC,®OpenStreetMap contributors,and the GIS User Community Mason County WA GIS Web Map Application Esri,HERE,Garmin,NGA,USGS,NPS i Attachment 2: Site Plan dlCi" S R9 RB BRA §� 8R fit 4P40 gg g 5 R3L A u -----I ------------�---- .R S •. , I I I I NE NORTH SHORE RC. � I 777 I ao� i I - �a'FRNM_NT!OT 5 a ^ pp� E _ ooeeO 6 j; _ ayRg556�y�5 lg�.j�1s { Y •�'yy�•�[ Ff ai'a�9g � � p�i54 k Attachment 3: Miti tion Plan Drawings SHED O,Q2 F� 9y BOAT TROLLEY REMOVAL AREA Remove structures and convert to veget ed stormwater swale using native egetation. See sheet 2 for details HOME CONCRETE REMOVAL AREA Remove concrete and plant native shrubs. See sheet 2 for details. r i DECK PLATFORM HW DECK REMOVAL AREA Remove east end of deck , amend 0 , 2 s a 5 10 underlying soil, and plant with native SCALE BAR shrubs. See sheet 2 for detais. I I I PLIGETSOLIND SOUND NATIVE PLANTS Roos&ndaal Property R005ENCAAL HADITAT MANAGEMENT PLAN 065igncd by BA PO DOX 7505 12681 NE North Shore Rd SHEET 1:MITGATION PLAN OLYMPIA.WA 98507 6e1fnir,Washington ShGGt 1 of 2 (360)352-4122 (Parcel No.32235-50-00006) April 24,2019 Mitigation Plan Notes Goals and Obiectives The goal of the mitigation plan is to improve the riparian and rearshore habitat on the project site.The specific objectives are to increase native vegetation cover in the riparian Done,provide water quality treatment for n",and minimize impacts to surf smelt. 5ygE any of mitigation actions Mitigation will consist of removing the existing boat trolley and a portion of the existing deck,and planting native riparian vegetation in the areas where structures are removed.The boat trolley removal area will be converted to a vegetated smle to retain and treat runoff from the driveway.The deck removal area will be planted with native tall shubs.These actions will result in a net increase in native riparian vegetation cover of 150 square feet,and an additional 65 square feet of improved intertidal habitat Mitigation wait will be ti med to minimize impacts to surf smelt or shoreline habitat. Boat Trolley Removal Area 1. Remove rails from intertidal Done doing kwvtide,between July 1 and August 15 or as directed by VCM.. 2. Use hand tools only for work in the intertidal Done. 3. Install sediment fence above bulkhead before waking in the upland area. 4. Remove the boat hoist and enclosure. 5. Remove and dispose of old railroad ties and concrete blocks from the upland area. 6. Dig out the upper 12"of bare soil from the upland area and dispose off site. 7. Install four coir logs nrring on contour across the upland area,spaced roughly eight feet apart,anchored with wool stakes or rebar. 8. Backfill the shale with a soil mix of 40%compost and 601/6 coarse sand by volume,such as Cedar Grove biosnales mix or equivalent t 9. Plant with native plants in the fall(see plant list belay Deck Removal Area 1. Remove a five foot wide portion of the deck at the east end. 2. Remove and dispose any garbage and debris from the plant ng area and dispose off site. 3. Decorrpad the sal in the planting area to a depth of at least 12". 4. Cover the planting area with 2"composted yard waste,and 4'woody mulch(arborist wood chips or ground fir bark). 5. Plant with native plants in the fall(see plant list bek* Maintenance 1. Vl Aw the planted areas once per week during periods of hot,dry weather,for at least the first three seasons after plan bng. 2. Trim sedges&rushes to about 6"height in fall and dispose of binnings off site. 3. Inspect planted areas for invasive weed groknkh at least 3 times per growing season. 4. Camtnd in wasive species using manual mettads if possible.If herbicide bwbTwd is required,it must be applied by a licensed commercial pesticide applicator with aquatic endorsement,wing only aquatic-approved herbicides. 5. Inspect shale 4 times per year for erosion,sediment,and plant mortality.If sediment exceeds 4"depth,remove using hard tools and dispose in a landfill.Erosion corrective measures may include more planting,installing jute netting,or more coir logs.Replace dead plants will be replaced with same species or other native planks appropriate to the site conditions. Ssecies Sipe Trdigy Removal Area Am=patens spreadi nrsh Plug or bareroot 400 Plant any combination of these 3 species.Plant in clumps of 4, Afficus e8`duus soft nsh Plug or baremot space dumps 1 apart Carex obmu (slough Plug or bareroot Camws sedoea red osier 1 or 2 gallon 4 Plant 1 in each tier Concrete Removal Area ca calilomica Pacific wax 1 or 2 gallon 3 Plant Y Deck Removal Area 11"ca,calUb"ca Pacific wax 1 or 2 gallon 3 Platt Y Wan Monitoring An"As-WIt"report will be submitted to the county showing the location of planting,including a list of installed plants,and photos of the site.The site will be inspected by a qualified professional consultant at the end of the 1st,2nd and 5th growing season fol loWng installation.Results of each site inspection,including project photographs,and recommendations to improve project success will be summarized in mron>itwng repots and submitted to the county.Reports will spedfy corrective actions for all failed performance standards.The performance standards for the project will be: 1. 1001/6 survival of trees and shrubs at the end of each monitoring period 2. No more than 5%invasive species cover at the end of each monitoring period 3. 201/6 native vegetation cover of the swale at the end of year 1 4. 401/6 native vegetation cover at the end of year 2 5. 801/6 native vegetation cover at the end of year 5 SOUND NATIVE PLANTS Roo5endaal Propt,rty R005ENDAAL HABITAT MANAGEMENT PLAN Designed by 6A PO BOX 7505 12681 NE North Short,Rd SHEET 2:MITIGATION NOTES OLYMPIA.WA 98507 Bt,lfair,Wa5hirrgton Sheet 2 of 2 (360)352-4122 (Parct,l No.32235-50-00006) April 24,2019