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Home My WebLink AboutHMP - HMP Habitat Managment Plan - 3/30/2014 ��rev k cx$ s AAV, THE WETLAND CORPS V. Wetland Delineation - Habitat Management Plans - Riparian Restoration - Mitigation • Biological Evaluation March, 2014 Page 1. PARCEL 32232-50-98001 HABITAT MANAGEMENT PLAN 320 East Dalby Road Union,WA 1.0 PROJECT DESCRIPTION The details of a Habitat Management Plan prepared for South Shore Enterprises for a property located off East Dalby Road(Parcel No. 32232-50-98001)are discussed in full in this report. The site is found in the SW quarter of Section 32 Township 22 North, Range 2 West (See Figure 1. Site Vicinity Map). The purpose of this Habitat Management Plan(HMP) is the following: 1) Address potential impacts resulting from the proposed construction of three adjacent retention ponds within the buffer of a type F stream and wetland buffer. In Mason County, type F streams require a 150 foot buffer with an additional 15-foot building setback. The project will entail constructing three rectangular ponds, side by side, within the portion of the parcel that furthest from the critical areas, while meeting project objectives. Each pond will occupy an area 40 feet wide by 50 feet long and 2.5 feet deep. The total area within the buffers displaced by the retention ponds will occupy an area of 6000 square feet. The retention ponds are required for the construction of a 6000 square foot commercial building, on an adjacent parcel. The retention pond will be located 35 feet from the type F stream, and approximately 10 feet from the wetland at the nearest point. The proposed project will not result in stream habitat displacement. The objectives of this HMP are as follows: • To evaluate the potential adverse effects to critical area functions as well as fish and wildlife habitat resulting from the construction of the retention pond. Emphasis is placed on the possible loss of habitat for any listed species found to be residing in the vicinity of the parcel. ■ To identify possible mitigation measures that could be implemented to offset the adverse effects resulting from the project. 2.0 PROPERTY DESCRIPTION The parcel occupies between two and three acres. The parcel is irregular in shape, and is generally occupied by a forested/shrub community of Douglas fir, western red cedar and big leaf PO Box 2854, Belfair,WA 98528 cell:360.620-0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com Parcel 32232-50-98001 HMP March,2014 Page 2 maple. The parcel is surrounded by commercial and residential parcels of varying size and.shape. A type F stream flows through the northern portion of the property, draining westerly toward the Hood Canal. A wetland was determined located within the eastern portion of the parcel. There are no other buildings or structures on the property. Topography throughout the majority of the parcel is relatively flat; with the exception of a short, steep bank at the southwest portion of the property. The short bank causes the proposed retention pond to be situated within 10 feet of the wetland and approximately 35 feet of the stream. YM sb:F :X y Figure 1. Photo adapted from the Mason County'G1S Online Parcel Viewer. Location of retention pond shown in white,wetland shown in green,type F stream shown in blue. Survey map provided by client shores two parcels to be united into the parcel outlined in red above. 3.0 APPLICABLE SETBACKS The project site is within the jurisdiction of Mason County. Ordinance 17.01.040 identifies Fish and Wildlife Habitat Conservation Areas adopted by Mason County. The applicable Fish and Wildlife Habitat Conservation Areas setback for this project is as follows: Habitat Type Buffer Building Setback from Buffer Type F stream 150, 15 4.0 DESCRIPTION OF HABITAT AND SPECIES 4.1 Puget Sound Chinook(Oncorhynchus tsharvytsha)-Threatened Listed as threatened since March 24, 1999, adult Puget Sound Chinook spawn in several rivers and streams flowing into Puget Sound. The type F stream in the vicinity of the project does not support Puget Sound Chinook due to the size of the stream and limited flow during the spawning period. PO Box 2854, Belfair,WA 98528 cell.360-620-0618,Office: 360-372-2421 e-mail:wetlandcorps@hotmail.com • Parcel 32232-50-98001 HMP March,2014 Page 3 Given. no Puget Sound Chinook habitat will be displaced, the proposed project will not adversely affect Puget Sound Chinook or associated habitat. 4.2 Bull Trout(Salvelinus nialma)-Threatened Bull trout typically inhabit very cold, clear headwater streams at high elevations that are supported by snowmelt. For spawning and. early rearing, bull trout require loose. clear gravel, relatively free of fine sediments. Suitable habitat for bull trout is not present in the onsite stream. Given no bull trout are present; the project is not likely to have any adverse impacts on bull trout. 4.3 Puget Sound Steelhead Listed as Threatened since May 2007, Puget Sound Steelhead spawn in several streams throughout Puget Sound. Spawning usually occurs in moderate to steep gradient sections of streams, usually in heads of riffles or the tails of pools where hydraulic conditions are conducive to intragravel flow. Side channels and the anterior portions of islands are also used. Spawn timing for summer steelhead runs typically ranges from mid. May through October while winter run steelhead are present from December through May. Adequate cover from predation, water temperature, and spawning gravel are important factors for instream habitat, while little is currently known about specific marine habitat requirements. The stream in the vicinity of the project does not support Puget Sound Steelhead due to the size of the stream and limited flow during the spawning period. The overall work described in this report is not expected to impact water quality or aquatic habitat important to steelhead. 4.4 Hood Canal Summer Chum (Oncorhynchus keta)-Threatened Hood Canal Summer Chum spawning areas in proximity to the site include the Union River and the Tahuya River. Recovery efforts are in place to restore naturally spawning summer chum populations to the Tahuya system while the Union stock remains healthy. The stream in the vicinity of the project does not support Hood Canal Summer Chum due to the size of the stream and limited flow during the spawning period. Therefore,no impacts to Hood Canal Summer Chum or associated habitat are predicted with the proposed project. No impacts to aquatic habitat or water quality are expected to occur. Given no habitat will be displaced, the proposed project will not adversely affect Hood Canal Summer Chum or associated habitat. 4.5 Bald Eagle(Haliaeetus leucocephalus)- Sensitive Habitat areas associated with Bald Eagle include uneven aged coniferous stands with some old- growth components. Nests are typically constructed in larger trees with dead or broken tops providing an unobstructed. view of nearby water. Snags and trees with exposed lateral limbs, or dead tops are used as perches and defense stations. There are no documented Bald Eagle nesting sites in the vicinity of the project area. However, given the presence of forested components near open water(Hood Canal) throughout the property, the site has potential to be utilized by Bald Eagle. The proposed project will require the removal of PO Box 2854, Belfair,WA 98528 ceii:360-620-0618, Office: 360-372-2421 e-mail:wetlandcorps@hotmail.com Parcel32232-50-9800.1 HMP March,2014 Page 4 mature coniferous trees within an area occupying 6000 square feet. Mitigation in the form of buffer enhancement should improve the potential for use of the site by Bald Eagle in the future by enhancing the habitat components within the wetland buffer. Given the prevalence of densely forested areas to be preserved throughout the property, coupled with proposed habitat enhancement, this project will likely have no adverse impacts on the potential for bald eagle utilization. 4.6 Marbled Murrelet(Brachyramphus tnarmoratus)-Threatened Marbled Murrelets are typically associated with coastal habitats and nest in old-growth forests. Murrelets.may fly as far as 50 miles inland to nest,however the average distance is roughly 5-mules from nest to sea. It is. only during the summer breeding months that they are commonly found inland. During non-nesting seasons they live at sea. Murrelets require tall mossy trees ' coniferous old growth forests with cavities on thick branches where they can construct a cup.nest 20-40 meters above the forest floor. Murrelets have been documented laying eggs on rocky ground habitats only when a sufficient forest is unavailable. There are no documented nesting sites surrounding the project site. No potential nesting trees containing platform features are within the project area. This.project will have no adverse impact on Marbled Murrelet given there are no documented nesting sites or potential nesting trees within the project area. 4.7 Northern Spotted Owl(Strix occidentalis caurina)-Threatened Spotted owls require a large amount of land for their nesting and hunting grounds; pairs may occupy up to 58 sq. km. They are territorial. and do not migrate, but they may shift their ranges slightly in response to seasonal changes. Suitable spotted owl habitat includes trees relatively large in diameter, multi-layered forest canopy with a moderate to high canopy closure in overstoiy,midstoiy,and understory, large, tall,live trees with cavities, broken tops, mistletoe, or platforms of branches capable of holding accumulated organic matter suitable for use as a nest. Dead standing trees and fallen decayed trees supporting abundant populations of prey species are critical to spotted owl populations. Currently there are no spotted owl nesting sites documented in proximity to the project site. The. trees proposed.to be removed for the retention ponds are not representative of Spotted Owl habitat. Proposed mitigation will enhance old growth components, typical of spotted owl habitat, throughout the parcel by increasing nurse log habitat. No impacts to Northern Spotted Owl. are predicted with this project. PO Box 2854, Belfair,WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com Parcel32232-50-98001 HMP March,2014 Page 5 5.0 ANALYSIS OF EFFECTS The project lies within the regulated buffer of a type F stream, and within the buffer of a regulated wetland. Project scale in the protected area is as follows: Development Type Habitat Type Project footprint within buffer Retention Pond type F stream buffer 6000 square feet 5.1 Vegetation Disturbance The proposed retention ponds will be located within an area occupied by Douglas fir, western red cedar and big leaf maple. Proposed mitigation described below entails enhancement of old growth components through nurse log placement, coupled with coniferous underplantings throughout the stream buffer and native planting surrounding the retention pond. 5.2 Designated Critical Habitat for Salmonids The stream in proximity to the project is not listed'in the NOAA Fisheries Northwest Region Critical Habitat Designations for West Coast Salmon and Steelhead in Washington - August 2005 as a Final Designation of Nearshore Marine Habitat Areas. 5.3 Noise Pollution An increase in noise from construction activities will occur during daylight construction hours. No nesting sites are located within the radii of concern that would be impacted by noise associated with the construction of the addition. Wildlife species residing in proximity to the project area have likely become adapted to noise associated with commercial and residential land use, and traffic associated with East Dalby Road. 5.4 Temporary Increase in Sediment and Turbidity during Construction The proposed work is not likely to increase turbidity and suspended sediment within the project area. Best Management Practices have been outlined in Section 6.3 to minimize the adverse effects associated with sediment runoff and turbidity impacts during project implementation. 5.5 Light and Glare The proposed project will not result in an increase in light and glare. PO Box 2854, Belfair,WA 98528 cell:360-620-0618,Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com Parcel 32232-50-98001 HMP March,2014 Page 6 6.0 MITIGATION MEASURES 6.1 Minimization Mitigation The proposed project minimizes impacts to the stream buffer by limiting the square footage of the retention pond expansion to 6000 square feet. This is. the minimum size necessary to complete project requirements as specified by Mason County. The retention pond will be located 35 from the stream at the nearest point and 10 feet from the wetland.at the nearest point. This is the furthest distance from the stream and wetland that is feasible given the size and shape of.the parcel and topography constraints.No additional habitat will be displaced. 6.2 Buffer Planting The portion of the property surrounding the retention pond, where construction machinery and equipment will access the retention ponds for project completion, will be planted with native vegetation. A 10-foot strip surrounding, or framing, the retention ponds, will be planted with native trees and shrubs. The area will occupy approximately 1800 square feet. The following species and pot sizes are recommended: Trees: western red cedar(Thuja plicata)- 2 gallon Douglas fir(Pseudotsuga menziesii)-2 gallon Shrubs: Oregon grape (Mahonia nervosa)- 1 gallon salal(Gaultheria shallon)— 1 gallon evergreen huckleberry(Vaccinium ovaturn) -gallon nootka rose(Rosa nutkana)— 1 gallon salmonberry(Rebus spectabilis)— I gallon Pacific Willow(Salix lusida)— l gallon Hooker willow(Salix hookeriana)— I gallon Scouler willow(Salix scouleriana)— l gallon Sitka willow(Salix sitchensis)— 1 gallon beaked hazelnut(Corylus cornula)— I gallon Indian plum (Oemleria cerasiformis)— 1 gallon oceanspray(Holodiscus discolor)— 1 gallon Pacific runebark(Physocarpus capitatus)— I gallon California black currant(gibes bracteosum)— I gallon western thimbleberry(Rebus parvif?orus)— I gallon red elderberry(Sambucus racemosa)_l gallon Ferns: sword fern(Polystichurn munitum)— 1 gallon A minimum of one tree species and three shrub species types from the list should be used. PO Box 2854, Belfair,WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com Parcel32232-50-98001 HMP March,2014 Page 7 Native Planting Guidelines It is recommended that plantings be installed within the identified mitigation zone to achieve the following densities. trees 10' on center shrubs/ferns-5' on center These densities will provide a moderately dense, structurally diverse plant community within the enhancement'zone. To fiilfill the recommended density, the enhancement zone will be planted with 18 trees and 54 shrubs. Any existing native plants witln the prescribed restoration area can be counted towards these target numbers. Coniferous Underplantings The overstory within the Mitigation Zone contains big leaf maple (Ater macrophyllum), western red cedar (Thuja plicata), western hemlock (Tsuga heteroph))lla) and Douglas fir (Psedotsuga menziesii) of similar size and age. Several migratory species, including Bald Eagles, are more likely to utilize forests with a diverse, unevenly aged overstory. To improve the structural diversity and increase the potential for wildlife utilization within the Mitigation Zone, it is recommended that the entire Mitigation Zone be enhanced with coniferous underplantings, The enhancement of the midstoiy through coniferous underplanting is expected to eventually provide a more dense midstory layer resulting in.a more structurally diverse forested community, The entire Mitigation Zone will be enhanced,occupying an area of 0.60 acre. It is recommended that the mitigation zone be enhanced using Douglas fir (Pseudotsuga menziesii) and western red cedar (Thuja plicata). This is based on light and soil requirements, versatility,and occurrence in proximity to the site. The trees should be planted an average of 10- feet on center, spaced around existing trees, from 2-gallon containers, to provide amoderately dense, structurally diverse plant community within the mitigation. zones. To fulfill the recommended planting density, approximately 200-250 trees will be planted, depending on availability of space with existing trees. Invasive species such as Himalayan blackberry have been observed within the project area. This species is a stubborn competitor for light and nutrients and limits success of native plants. It is recommended that Himalayan blackberry be removed from the recommended planting area. Herbicides should not be used to achieve this due to the proximity to the stream. They can be uprooted by mechanical means or persistently cut during the growing season to offset the rhizomes while installed native plains become established. Typically, planting should occur during winter dormancy. The optimum time for planting is during February and March; however, the need to complete the project in a timely manner may call for planting to occur outside optimum time periods. No machinery earthwork will be necessary to carry out this planting; planting holes for specified vegetation installation will be hand dug. No additional clearuig or grading should be required for site enhancement. All PO Box 2854, Belfair, WA 98528 cell:360-620.0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmaiLcom Parcel 32232-50-98001 14MP March,2014 Page 8 installed vegetation shall be marked with colored flagging to facilitate monitoring inspections. The monitoring program is outlined to insure project effectiveness. 6.3 Nurse.Log Enhancement Recommendations Mitigation for the proposed:project entails enhancing the portion of the wetland buffer between proposed development and the wetland through nurse log installation. The overall goal being to: enhance the habitat diversity and old growth components within the wetland buffer. The entire area to be enhanced occupies the entire portion. of the stream buffer surrounding the retention pond within the property, an area of 0.6 acre. Large Woody Debris (LWD) is an integral component of local wildlife habitat. Natural cavities and dens are provided by LWD which creates foraging and nesting areas for birds and mammals. It is recommended that portions of the trees to be removed from the buffer be left to provide such habitat. Logs greater than 10 feet in length with attached rootwads are the most preferable. Only trees greater than 10 inches DBH should be used as nurse logs to avoid the appearance of scattered timber slash debris within the proposed park. At least one,log greater than 10-feet in length should be taken from each tree to be removed from the stream buffer over 10" DBH. The logs should be placed and spaced randomly throughout the buffer areas to mimic natural distribution. Consideration should be given to leaving tall stumps from hazard trees to be removed from outside the project area. Stumps left 6' or taller can be utilized as foraging and nesting snags for local species of importance such as pileated woodpecker. 6.3 Best Management Practices Reconvnended.Best Management Practices for this project are as follows: • Perform excavation and site preparation work during dry weather. • Install silt fencing along the waterward edge of the construction zone to prevent erosion and siltation of waters. • Minimize amount of erodible soils at any given time to the maximum extent feasible. • Check all equipment daily for leaks. Refueling and lubrication of equipment should occur off site. Do not store any fuel,lubricants, chemicals, or hazardous substances outside overnight within the project area. • Clearly mark clearing limits with orange flagging or construction fencing. • Do not apply any chemicals when there is a possibility of rain. • Comply with all permits and requirements of governing authority. PO Box 2854, 8elfair, WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail:wetlandcorps@hotmail.com Parcel32232-50-98001 HMP March,2014 Page 9 7.0 MONITORING Monitoring of the site will begin the first fall following planting and maintained on a seasonal basis. The information gathered will provide the following: 1) condition of reintroduced plant species; 2) the use of the site by wildlife species; 3) any disturbance caused by the development and its effect on the protected zone and associated aquatic habitat; 4) any occurrence of exotic species within the mitigation zone; 5) any corrective measures that may be deemed necessary to provide desired conditions. This monitoring will be in effect for the duration of three years. The information gathered will be provided in an annual report and submitted to the Director of Mason County Department of Community Development, 8.0 SUMMARY This report addresses the proposed construction a retention pond within the type f stream buffer and wetland buffer. The construction will entail the construction of three adjacent ponds, occupying a total area of 6000 square feet within the type F stream buffer and wetland buffer. Mitigation for the proposed project entails 1) native plant enhancement within a 10-foot perimeter surrounding the retention ponds within the stream buffer, and 2) habitat enhancement through coniferous underplantings and nurse log placement throughout the stream buffer within the property,occupying approximately 0.6 acre. Mitigation Measures, and Best Management Practices, have been identified to avoid, minimize, and mitigate for potential impacts associated with proposed construction. We trust this information is sufficient for your needs at this time. Thank you for choosing The Wetland Corps as your environmental consultant. If you have any questions feet free to call. Respectfully submitted, Lee Boad Senior Ecologist e�Lane Staff Wetland&Natural Resource Specialist PO Box 2854, Belfair, WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com �a ne d /\ - q_.,• Cady ta1�e `-j _�_.c..._- % cLoneDbCkPOftd 7hoAaatt3o J 9lloY € V(� o Mksrs Obnd i �r '� I ��' ROODt_F�= U �" ;�$�takeYAferr ii j lw:J {1 Cnst t6b j t�i��F„ f z i N <1 j Ktod.Lake Approximate w+brdbe` .. �r �* C. O Cp Ito r'y stara t•'R Parcel Location 0 rrrw t f t J� w�ixutt r au.s N STEPHENS RD,-, . L QQ a L� 1 AyOyF FtO. �. Efl9tt3YR ; -G&P �TPR QO J 1� j 3�. iry t 2324 RR 1. / Roi#Lakv }d!"'1. F .s AL r m8h - a0 z}', c_ _... 13 El1AN?ANITA dR ' t track#Lakc Ali . ,- &xaiwntsxvxut:r Alt! 18D9,3fF' zoom ta__ v Zoom Factor: 125% v Zoom to Point FIGURE 1. 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Project Name: Parcel 32232-50-98001 HMP Project Number: TWC14-019 Client: South Shore Enterprises Location: Union, WA Date: 3/2014 THE WETLAND CORPS N Parcel 3223::14)-98001 9 I0-1:iot strip surrounding, I rentention pond to be • planted with native vegetation(1900 sq.ft 3 4. ` ----� / •• / Wetland Bo ndary 5 •, 0 a Proposed RetcutinnyAdd� (6I)II0 ft') _ 15 0' / } 0 100, d FIGURE 2. SITE MAP Project Name: Parcel 32232-50-98001 HMP Project Number: TWC14-019 Client: South Shore Enterprises Location: Union,WA � — Date: 3/2014 THE WETLAND CORPS WeVands al Wetlands Invent... Extuarine and Marl"CV00water `q,'roo Eetuartn*and Marfna Wetfand, Fr*A wratar Vrrwgwt Wetland FmOwvater FprgWoWVIrub Wetland. Freahwatw Pond Lake other Ntvrrine s� {` . Approximate ` Parcel Location �� + Ir: �f i� } t�. Q �e14 E e adapted from the Figure 3. NWI Map Mapping Website Section 32 Township 22 North Range 3 West FIGURE 3. NWI WETLANDS MAP Project Name: Parcel 32232-50-94015 HMP Project Number: TWC14-019 Client: South Shore Enterprises Location: Union, WA THE WETLAND C O"S Date: 3/2014 Eater � •;�,+.�;, , _ ,.i �rY • .��.. . J Approximate . 4 Parcel Location d r � `�� ... �+ � 33�` �x� ors�c� ,.-•' ?-.. 1:,f Mason Soil Survey Nd-Norma Sandy Loam 0 to 3 percent slopes, poorly drained. Eh- Everett gravelly sandy loam 5 to 15 percent slopes, somewhat excessively drained. FIGURE 4. MASON COUNTY SOIL SURVEY Project Name: Parcel 32232-50-94015 HMP Project Number: TWC14-019 Client: South Shore Enterprises — Location: Union,WA THE WETLAND CORPS Date: 3/2014 Z4 7 :a`�r:$ :t... -.�.,.'.2 1.t7S.."$- }� :.9 2 1705 s' TQ°s{i zS ;- i�a 1703;O;2 170" -a 17 +14 --- + 7 3 J 1704M liu4li41 3 1rau�s 1::;w;�s i 7o41eo }7o41az *; 4 .7c4:s �"�-� '�3 itryrt Found .�. . - -• C� S P.Q¢t ttvsni ( " fi� Approximate 2, 4 p4166a 4 )'82 41 Parcel Location 4,{:{ 4{a4,.0 494'.42 +542 M F Ai ±i 4b y, v ` c. !� i4♦ 13 laa Jr 7? f aj "r r ?� �4 lT = yy� 02 402a i17041 1 T• .t L 7`L4' 7%4008-- 17 44tf G p i.� a ♦ i '"♦ �4. ( k y ti } _ }i i8 * +� 70 1 _ S 7� 1 F Caman Lake 4 031 W132 17031& '17 icy a _• t t ?ib3 4" r + N . /9 y �!9 ptTOl3G y 0 +:0. t t6 7Dats2 JO]t dy1 f . 4J STREAMS F Water Type S,F,N �'� (Np or Ns when known) U IU.unknown y( X,non-typed per WAC 222-16 Water Type Change TRANSPORTATION �✓"��Paved Road / Y Unpaved Road 1 Surface Unknown wxzrl Abandoned Road(not on Activity map) Orphaned Road(not on Activity map) Trail x Railroad FIGURE 5. WA DNR WATER RESOURCE MAP_ Project Name: Parcel 32232-50-94015 HMP Project Number: TWC14-019 Client: South Shore Enterprises ' - Location: Union,WA THE WETLAND CORPS Date: 3/2014 THE WETLAND CORPS ,��r Wetland Delincation - Habitat Management Plans • Riparian Restoration - Mitigation . 13iological Evaluation HABITAT MANAGEMENT PLAN ADDENDUM 320 East Dalby Road Union,WA Mason County Prepared for: South Shore;Enterprises PO Box 249 Union,WA 98592 Prepared by: Heather Lane and Lee Boad May 2014 PO Box 2854, Belfalt,WA 98528 cell:360-620-0618,Office: 360-372-2421 e-mail:wetlandcorpsehotmail.com THE WETLAND CORPS Wetland Delineation • I-iahitstManagement Plans Riparian Restoration • Mitigation , Biological Evaluation HABITAT MANAGEMENT PLAN ADDENDUM TABLE OF CONTENTS 1.0 PROJECT DESCRIPTION...................................................................................................1 2.0 PROPERTY DESCRIPTION .............................................................,.................................1. 3.0 APPLICABLE SETBACKS..................................................................................................2 4.0 DESCRIPTION OF HABITAT AND SPECIES.................................................................2 5.0 ANALYSIS OF EFFECTS....................................................................................................4 6.0 MITIGATION .......................................................... ..... . ....................................................6 7.0 MONITORING........................................................................................................... .......7 8.0 SUMMARY.............................................................................................................................7 Figures Figure 2. Site Plan PO Box 2854, Belfair, WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps(3hotmail.corn Air : THE WETLAND CORPS Wetland Delineation - Habitat Management Plans - Riparian Restoration. • Mitigation Biological Evaluation May,201.4 Page I HABITAT MANAGEMENT PLAN ADDENDUM 320 East Dalby Road Union,WA 1.0 PROJECT DESCRIPTION The details of an addendum to the Habitat.Management Plan prepared for South Shore Enterprises for a property located off East Dalby Road are discussed in full in this report. The site is found in the SW quarter of Section 32 Township 22 North, Range 2 West (See Figure 1. Site Vicinity Map). The purpose of this Habitat Management Plan(HMP)is the following: 1) Address potential impacts resulting from the proposed filling of a retention pond within. the buffer of a type F stream and wetland buffer. The pond is located on parcel 32232-50-94015. In Mason County,type F streams.require a.150 foot buffer with an additional 15-foot building setback. The project will entail filling an existing retention pond, occupying an area of approximately 2000 square feet, with 580 cubic yards of fill material. The retention pond is located 70 feet from the type F stream, and approximately 60 feet from the wetland at the nearest point. The proposed project will not result in stream.habitat displacement. The objectives of this HMP are as follows: ■ To evaluate the potential adverse effects.to critical area functions as well as fish and wildlife habitat resulting from the proposed filling of the retention pond. Emphasis is placed on the possible loss of habitat for any listed species found to be residing in the vicinity of the parcel. ■ To identify possible mitigation measures that could be implemented to offset the adverse effects resulting from the project 2.0 PROPERTY DESCRIPTION The parcel occupies approximately one acre. The parcel is rectangular in shape, and is generally occupied by a forested/shrub community of Douglas fir, western red cedar and big leaf maple. The parcel is surrounded by commercial and residential parcels of varying size and shape. A type F stream flows through the property, draining westerly toward the Hood Canal. A wetland.area is located east of the parcel. There are no buildings or structures on the property. Topography throughout the majority of the parcel is relatively flat. PO Box 2854. Belfair,WA 98528 cell:360-620-0618,Office: 360-372-2421 e-mail:wetlandcorps@hotmail.com I IINIP Addendian May,2014 Page 2 E Photo 1. Retention pond to be filled circled in red, s 3.0 APPLICABLE SETBACKS The project site is within the jurisdiction.of Mason County. Ordinance 17.01.040 identifies Fish and Wildlife Habitat Conservation Areas adopted by Mason County. The applicable Fish and Wildlife Habitat Conservation Areas setback for this project is as follows: Habitat Type Buffer Building Setback from Buffer Type F stream 150' 1.5' 4.0 DESCRIPTION OF HABITAT AND SPECIES 4,1 Puget Sound Chinook(Oneorhynchus tshaivytsha)-Threatened Listed as tlueatened since March 24, 1999, adult Puget Sound Chinook spawn in several rivers and streams flowing into Puget Sound. The type F stream in the vicinity of the project does not support Puget Sound Chinook due to the size of the stream and limited flow during the spawning period. Given no Puget Sound Chinook habitat will be displaced, the proposed project will not adversely affect Puget Sound Chinook or associated habitat. 4.2 Bull Trout(Salvelinus tnalma)-Threatened Bull trout typically inhabit very cold, clear headwater streams at high elevations that are supported by snowmelt. For spawning and early rearing, bull trout require loose, clear gravel., relatively free of fine sediments. PO Box 2854, Belfair,WA 98528 cell:360-620-0618,Office:360-372-2421 e-mail: wetlandcorpsghotmail.com ' W Addcndum May,2014 ` Page 3. Suitable habitat for bull trout is not present in the onsite.stream. Given no bull trout are present; the project is not likely to have any adverse impacts on bull trout. 4.3 Puget Sound Steelhead Listed as Threatened since May 2007,Puget Sound Steelhead spawn in several streams throughout Puget Sound. Spawning usually occurs in moderate to steep gradient sections of streams, usually in heads of riffles or the tails of pools where hydraulic conditions are-conducive to intragravel flow. Side channels and the anterior portions of islands are also used. Spawn timing for summer steelhead runs typically ranges from mid May through October while winter run steelhead are present from December through May. Adequate cover from predation,;water temperature, and. spawning gravel are important factors for instream habitat, while little is currently known about specific marine habitat requirements. t The stream in the vicinity of the_project does not support Puget Sound Steelhead due to the site of the stream and limited.flow during the spawning period. The overall work described in this.report. is not expected to impact water quality or aquatic habitat important to steelhead. 4.4 Hood Canal.Summer Chum (Oncorhynchus keta)-Threatened Hood Canal. Summer Chum spawning areas in proximity to the site include the Union River and the Tahuya River. Recovery efforts are in place to restore naturally spawning summer chum populations to the Tahuya system while the Union stock remains healthy. The strearn in: the vicinity of the project does not support Flood Canal Summer Chum due to the size of the stream and limited flow during the spawning period.Therefore; no.impacts to Hood Canal Summer Chum or associated habitat are predicted with the proposed project. No impacts to aquatic habitat or water quality are expected to occur., Given no habitat will be displaced, the proposed project will not adversely affect Hood Canal Summer Chum or associated.habitat. 4.5 Bald.Eagle(Haliaeetus leucocephalus)-Sensitive Habitat areas associated with Bald Eagle include uneven aged coniferous stands with some old- growth components. Nests are typically constructed in larger trees with dead or broken tops providing an unobstructed view of nearby water. Snags and trees with exposed lateral limbs, or dead tops are used as perches and defense stations. There are no documented Bald Eagle nesting sites in the vicinity of the project area. However, given the presence of forested components new open water(Hood.Canal)throughout the property, the site has potential to be utilized by Bald Eagle. The proposed project will require the removal of no trees within the stream buffer. Mitigation in the foam of buffer enhancement should improve the potential for use of the site by Bald Eagle in the fixture by enhancing the habitat components within the wetland buffer. Given the prevalence of densely forested areas to be preserved throughout the property, coupled with proposed habitat enhancement, this project will likely have no adverse impacts on the potential for bald eagle utilization. 4.6 Marbled Murrelet (Brachyramphtts marmoratus)-Threatened PO Box 2854, Belfair,WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com IIND Addendum May,2014 Pago 4: Marbled Murrelets are.typically associated. with, coastal habitats and nest in old-growth forests. Murrelets may fly as far as 50 miles inland to nest, however the average distance is roughly 5-miles. from nest to sea, It is only during the summer breeding months that they are commonly found inland. During non-nesting seasons they live at sea. Murrelets require tall mossy trees in. coniferous old growth forests with cavities on thick branches where they can construct a cup nest 20-40 meters above the forest floor. Murrelets have been documented laying eggs on rocky ground habitats only when a sufficient forest is unavailable. There are no documented nesting sites surrounding the project site. No potential nesting trees containing platform features are within the project area. This.project. will have no adverse impact on Marbled Murrelet given there are no documented nesting sites or potential nesting trees within the project area. 4.7 Northern Spotted Owl(Strix occidentalis caurina)-Threatened Spotted owls require a large amount of land for their nesting and hunting grounds; pairs may occupy up to 58 sq. km. They are:territorial and do not migrate, but they may shift their ranges slightly in response to seasonal changes. Suitable spotted owl habitat includes trees relatively large in diameter, multi-layered forest canopy' with a moderate to high canopy closure in overstoiy, midstory,and understory, large,tall,live trees with cavities, broken tops, mistletoe, or platforms of branches capable of holding accumulated organic matter suitable for use as a nest. Dead standing trees and fallen decayed trees supporting abundant populations of prey species are critical to spotted owl populations. Currently there are no spotted owl nesting sites documented in proximity to the project site. There are no trees proposed to be removed for the proposed filling of the retention pond. Proposed mitigation will enhance forested components,typical of spotted owl habitat, throughout the parcel. No impacts to Northern Spotted Owl.are predicted with this project. 5.,0 ANALYSIS OF EFFECTS The project lies within the regulated buffer of a type F stream, and within the buffer of a regulated wetland. Project.scale in the protected.area is.as follows: Development Type Habitat Type Project footprint within buffer Filling of Retention Pond type F stream buffer —2,000 square feet 5.1 Vegetation Disturbance The area proposed to be filled is currently maintained as a retention pond, containing no native vegetation.. Following the proposed filling, the area will be planted with a community of Douglas fir and western red cedar,with an understory typical of the surrounding area. PO Box 2854, Belfair,WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail:wetlandcorps@hotmail.com IMP Addendiun May,2014 Page 5 5.2 Designated Critical Habitat for Salmonids The stream in proximity to the project is not listed in the NOAA Fisheries Northwest Region Critical Habitat Designations for West Coast Salmon and Steelhead in Washington - August 2005 as a Final Designation of Nearshore Marine Habitat Areas. 5.3'Noise Pollution An.increase in noise from construction activities will occur during daylight construction hours. No nesting sites are located within the radii of concern that would be impacted by noise associated with the filling of the retention pond. Wildlife species residing in proximity to the project area.have likely become adapted to noise associated with commercial and residential land use, and traffic associated with East Dalby Road. 5.4 Temporary Increase in Sediment and Turbidity during Construction The proposed work is:not likely to increase turbidity and suspended sediment within the project area. Best Management Practices have been outlined in Section 6.3 to minimize the adverse effects associated with sediment runoff and turbidity impacts during project implementation. 5.5 Light and Glare The proposed project will not result in an increase in light and glare. 6.0 MITIGATION MEASURES 6.1 Minimization Mitigation The proposed project minimizes impacts to the stream buffer by limiting the square footage of fill to only that which is within the perimeter of the existing retention pond,an area of 450 square feet. The proposed Pill will be located 70 fi-om the stream at the.nearest point and 60 feet from the wetland at the nearest point. No additional habitat will be displaced. 6.2 Buffer Planting The entire filled area will be planted with native vegetation. In addition, the portion of the property -surrounding the retention pond, where construction machinery and equipment will access the retention for project completion,will be planted with native vegetation. The area will occupy approximately 2000 square feet. The following species and pot sizes are recommended: Trees: western red cedar(Tlnlja plicata)- 2 gallon Douglas fir(Pseudotsuga menziesii)-2 gallon Shrubs: Oregon grape (Mahonia nervosa)- l gallon salal (Gaultheria shallop)— l gallon evergreen huckleberry(11aceinium ovatum)-gallon nootka rose (Rosa nutkana)— l gallon PO Sox 2854, Belfair,WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com SW Addendum:. May,20;14 Page 6 salmonberry(Rubur spectabilis)-1 gallon Pacific Willow(Salix hrsida)—1 gallon Hooker willow(Salix hookeriana)— 1 gallon Scouler willow(SaILY s:couleriana)— 1 gallon Sitka willow(Salix sitchensis)—1 gallon beaked hazelnut(Corylus cornuta)—1 gallon Indian plum(Oernleria cerasifbrm4)—l gallon oceanspray(Holodiscus discolor)— 1 gallon Pacific ninebark(Physocarpus capitatus)—1 gallon California black currant.(Ribes bracteosum)— 1 gallon western thimbleberry(Rubes parviflorus)--1 gallon red elderberry(Sarnbucus racemosa)—1 gallon # Ferns: sword fern(Polystichum munitunt)—.1 gallon i A minimum of one tree species and three shrub species types from the list should be used. Native Planting Guidelines It isrecommended that plantings be installed within the identified mitigation zone to,achieve the following densities. trees- 10' on center shrubs/ferns-5' on center These densities will provide a moderately dense, structurally diverse plant community within the enhancement zone. To fulfill the recommended density, the enhancement zone will be planted with 20`trees and 80 shrubs. Any existing native plants within the prescribed restoration area can be counted towards these target numbers. Invasive species such as Himalayan blackberry have been observed within the project area. This species is a stubborn competitor for light and nutrients and limits success of native plants. It is recommended that Himalayan blackberry be removed from the recommended planting area. Herbicides should not be used to achieve this due to the proximity to the stream. They can be uprooted by mechanical means or persistently cut during. the growing season to offset the rhizomes while installed native plants become established. Typically, planting should occur during winter dormancy. The.optimum time for planting is during February and March; however, the need to complete the project in a timely manner may call for planting to occur outside optimum time periods. No ,machinery earthwork will be necessary to carry out this planting; planting holes for specified vegetation installation will be hand dug. No additional clearing or grading should be required for site enhancement. All installed vegetation shall be marked with colored flagging to facilitate monitoring inspections. The monitoring program is outlined to insure project effectiveness. PO Box 2854, Belfair,WA 98528 cell:360-620-0618. Office: 360-372-2421 e-mail: wet landcorps @ hot mail.com LIMP Addendum May,2014 Page 7 6.3 Best Management Practices Recommended Best Management Practices for this project are as follows: • Perform excavation and site preparation work during dry weather. • Install silt fencing along the waterward edge of the construction zone to prevent erosion and siltation of waters. • Minimize amount of erodible soils at any given time to the maximum.extent feasible. • Check all equipment daily for leaks. Refueling and lubrication of equipment should occur off site. Do not store any fuel, lubricants,chemicals,or hazardous substances outside. over night'within the.project area. • Clearly mark clearing limits with orange flagging or construction fencing. • Do not apply any chemcals when there is a possibility of rain. • Comply with all permits and requirements of governing authority. 7.0 MONITORING Monitoring of the site will begin the first fall following planting and maintained on a seasonal basis. The information gathered will provide the following: 1) condition of reintroduced plant. species;.2) the use of the site by wildlife species; 3) any disturbance caused by the development and its effect on the protected zone and associated aquatic habitat; 4) any occurrence of exotic species within the mitigation zone; 5) any corrective measures that may be deemed necessary to provide desired conditions. This monitoring will be in effect for the duration of three years. The information gathered will be provided in an annual report and submitted to the Director of Mason County Department of Community Development. 8.0 SUMMARY This.report addresses the proposed fill of a retention pond within the type f stream buffer and wetland buffer. The construction will entail the filling of an area occupying a total area of—2000 square feet with 580 cubic yards within the type F stream buffer and wetland buffer. Mitigation for the proposed project entails native plant enhancement over the entire filled area,in addition to within a 10-foot perimeter surrounding the retention pond within .the stream buffer, an area occupying approximately 500 square feet. Mitigation Measures, and Best Management Practices, have been identified to avoid, minimize, and mitigate for potential impacts associated with proposed construction. We trust this information is sufficient for your needs at this time. Thank you for choosing The Wetland Corps as your environmental consultant. If you have any questions feel flee to call. Respectfully submitted, PO Box 2854. Belfair, WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps@liotmail.com HMP Addend.wn. May,2014: Page 8 Lee Boa Senior Ecologist H e a�ir�ne Staff Wetland&NaturaI Resource Specialist PO Box 2854, Belfair, WA 98528 cell:360-620-0618, Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com REFERENCES Audobon WatchList. http;//audobon2.org/Nvebapp/watclilist/viewSpecies. Knutson, K.L., and V.L. Naef. 1997. Management recommendations for Washington's priority habitats: riparian. Washington Department of Fish and Wildlife, Olympia. 181 pp. Native Plants for Kitsap County. ftp:ilkcwpptib3.co.kitsap.wa.tis/pw/s\viNative Policy of Washington Department of Fish and Wildlife and Western Washington Treaty Tribes Concerning Wild Salmonids. Adopted by Washington Fish and Wildlife Commission,1997. PO Box 2854, Belfair,WA 98528 cell:360-620-0618. Office: 360-372-2421 e-mail: wetlandcorps@hotmail.com 0 100, N Pai-cei 32232-50-94015 Retention Pond to be filled&planted with native vegetation (450 s . ft. ) Existing building APaved pring/driveway f FIGURE 2. SITE MAP Project Name: Parcel 32232-50-94015 HMP Project Number: TWC14-019 Client: South Shore Enterprises THE WETLAND CORP S Location: Union,WA Date: 3/2014 0 100' N k 1 Existing building i 'ng .. b ,. llr f }} j 4 d l 1 IMM F IGUC RF 2 SI II: lT.l1' ;�II2t� se 32-50-94015 HMP \ Project Number: TWC14-019 Client: South Shore Enterprises THE TLAND CORDS Location: Union,WA Date: 3/2014 1 N 1'a.�Yf 3�23i•Si1=.>tiSN}t Y�Y 3 ' •'/ IQ-toot strip surround g 9 �'•,1 rentention pond to be planted with native vegetation(1800 sq..:t MW v Wetland Bofindary ♦ ♦ I'n��whcd Rctrutiop�°o'tid� � y s 15017 ¢f 0 FIGURE 2. SITE iVIAP Project Name: Parcel 32232-50-93001 HMP Project Number: TWC14-019 Client: South Shore Enterprises Location: Union, WA I-rDate: 3/2014 THE WETLAND CORPS