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HomeMy WebLinkAboutWerdall Habitiat Management Plan - HMP Habitat Managment Plan - 1/10/2008 i THE WETLAND CORPS 7W77 Wetland Delineation • Habitat Management Plans - Riparian Restoration • Mitigation - Biological Evaluation W E RDAL L HABITAT MANAGEMENT PLAN Parcel 122162100001 Belfair,Washington RECEIVED Mason County 'JAN 10 2008 BELFAIR. OFFICE Prepared for: Jeff and Pam Werdall PO Box 2517 Belfair,WA 98528-2517 Prepared by: Lee Road PO Box 2854,Belfair,WA 98528 cell:360-620-0618,Office:360-372-2421 e-mail: boad40@peoplepc.com THE WETLAND CORPS � Wetland Delineation - Habitat Management Plans - Riparian Restoration • Mitigation - Biological Evaluation WERDALL HABITAT MANAGEMENT PLAN TABLE OF CONTENTS 1.0 INTRODUCTION..................................................................Error! Bookmark not defined. 2.0 PROJECT DESCRIPTION................................................................................................... 1 3.0 PROJECT AREA DESCRIPTION.......................................................................................2 4.0 SPECIES INFORMATION................................................................................................... 3 5.0 MITIGATION......................................................................................................................... 3 6.0 MONITORING...................................................................................................................... 5 7.0 CONCLUSION .......................................................................................................................5 REFERENCES..............................................................................................................................6 Figures Figure 1. Site Vicinity Map Figure 2. Site Map Figure 3. National Wetland Inventory Map Figure 4. Mason County Soil Survey Map Figure 5. DNR Water Resource Map PO Box 2854 Belfair, Washington 98528-Cell Phone 360-620-0618.Office Phone 360-372-2421•boad40@peoplepc.com I TUT WETLAND CORPS Wetland Delineation • Habitat Management Plans • Riparian Restoration - Mitigation - Biological Evaluation TWC-20081 Page 1 Habitat Management Plan Parcel: 122162100001 Mason County,Washington 1.0 Introduction The details of a Habitat Management Plan for the proposed construction of a Single-Family Residence e discussed in D co us ileatus habitat az i Pileated Woodpecker ) (SFR) within a property supporting p ( rY P P full in this report. Pileated woodpecker is regulated as a species of importance under chapter 17.01.040 of the Mason County Resource Ordinance due to their state listing status of Candidate. The proposed mitigation focuses on the management of important habitat features and protection of forested areas within the property. 2.0 Project Description Residential use of the property will include the establishment of an on-site sewage system, installation of a single party well, and construction of a single family home, with an accessory building. All these features are proposed within the western half of the property. Standing dead trees (snags) with observed signs of Pileated woodpecker use are within the identified project area. The standing dead trees are used for foraging and are therefore important to the use of the site by the regulated species. No indicators of nesting or roosting have been observed. Due to the steep nature of the site, a geotechnical report has been prepared which has determined the necessary locations of all project components. Two standing dead trees with foraging excavations'are in very close proximity, if not within, the house location shown on the geo-technical report. While these represent important habitat features, they also pose a significant safety hazard with regards to residential use,and therefore must be removed from the project area. Removal of the standing dead trees will be mitigated by creating similar habitat features outside the project area. Habitat features will be created within a protected forested area where they have highest likelihood of longevity and use. The southeastern third ,of the property consists of a forested area which is protected under a combination of stream and slope setbacks. This area will continue to support suitable habitat as well as develop important habitat features through natural processes. The maintenance of standing dead trees coupled with the preservation of the well forested southeastern portion of the property will insure the continued use of the site by pileated woodpecker. This being the case, habitat management planning of this site has included the inventory of standing dead trees to be PO Box 2854 Belfair, Washington 98528•Cell Phone 360-620-0618-Office Phone 360-372-2421-boad40@peoplepc.com peoplepc.com fit" TVVC-20092 December,2007 Page No.2 removed, and identification of live trees to be used for creation of habitat features. With recommended mitigation,there will be no net loss of important habitat features resulting from this project. � r Ai J r, L•. .j. w � J �4 1 y� Photo 1. Foraging snag within project area. 3.0 Project Area Description The property consists of mature coniferous/deciduous mix forest within a forested canyon occupying the southeastern portion. Dominant plant species identified include an over-story of mostly big leaf maple (Acer macrophyllum), with interspersed Douglas fir (Pseudotsuga menaiesa), western hemlock (Tsuga heterophylla), and western red cedar (Thuja plicata), with an understory of evergreen huckleberry (Vaccinium ovatum), Oregon grape (Mahonia nervosus), sword fern (Polystichum munitum), and salal(Gautheria shallon). Landscape topography consists of slopes ranging from 27 to 59 percent trending downward from a ridge that intersects the southeastern third of the site. Areas to the northwest of the ridge are of lesser gradient than to the southeast. The overall project area identified in the geotechnical report is located within the central portion of property, slightly to the east, where topography suitable for construction is present. PO Box 2854,Belfair,WA 98528 cell:360-620-0618,Office: 360-372-2421 e-mail:boad40@peoplepc.com HMP TWC-20082 December,2007 Page No.3 4.0 Species Information Pileated Woodpecker Vn copus Pileatus)—Species of Importance Pileated woodpecker is listed as a candidate species by the Department of Fish and Wildlife, and is considered a Species of Importance in Mason County. The pileated woodpecker lives in coniferous and deciduous forests, preferring large, dead trees for nesting. The pileated woodpecker digs characteristically rectangular holes in trees to find ants. Pileated woodpeckers seldom use clearcuts,but will forage in clearcuts or shelterwood cuts if substantial foraging habitat is retained. The presents of standing dead trees with foraging excavations are indicative of woodpecker use within any given property. The WDFW recommendations for coniferous forests (stands with >70% conifer stems) of about 60 years of age or older include maintaining>70% canopy closure and an average of>5 nest snags/10 ha (2 snags/10"ac)that are >76 cm dbh (30 in). In areas used for nesting and roosting, an average of 18 large snags/ha(7 snags/hc) and 8 decaying large trees/ha(3 trees/ac) should be retained. Trees>27.5 m (>90 ft) in height should be retained to provide nesting and roosting structures (Aubry and Raley 2002b). Overall, pileated woodpeckers selected larger trees for roosting than those used for nesting. Due to the observed indicators of use of the site by pileated woodpecker,removal of standing dead trees will be mitigated by the creation of additional foraging and potential nesting habitat. The standing dead trees outside the project area will be retained so long as there is adequate space to accommodate project needs without needing to remove them. 5.0 Mitigation 5.1 Preservation of Mature Forested Area The southeastern third of the property is regulated under a combination of slope and stream setbacks (See Figure 2. Site Map). The maintenance of this area will be important to the long term use of the property by pileated woodpecker. Suitable area exists to the east of the forested area to accommodate residential use of the property without encroaching on stream or slope setbacks. This being the case, this area will continue to provide suitable habitat and develop important habitat features. 5.2 Mitigation for Removal of Habitat Features Two standing dead trees within the project area have been flagged as significant habitat features to be removed. A site map is shown in Figure 2 showing their approximate locations in relation to project components. These trees appear to be at a point of decay that would not facilitate relocation and upright positioning. Two mature second growth conifers within the 50-foot slope buffer have been identified for creation of potential nesting and roosting habitat, one western red cedar and one Douglas fir. The trees have been selected based on their location within a protected area and potential for longevity once converted to a snag. These are live, sound trees,which will be topped a minimum of 25 feet from the base and girdled near the bottom. A bowl shaped depression will be carved in the top of the snag to retain water and promote heartwood decay from the top down. This is intended to facilitate the highest potential for PO Box 2854,Belfair, WA 98528 cell:360-620-0618,Office:360-372-2421 e-mail:boad40@peoplepc.com peoplepc.com I-BvviP TWC-20082 . Decembef,2007 Page No.4 nesting and roosting habitat. TWC staff has experience with such techniques and should be contacted for assistance. Photo 2. Live tree to be used for snag creation. If firm enough, the standing dead trees removed from the project area can be transported into the protected portion of the property to function as nurse logs. 5.3 Adaptive Management If unforeseen circumstances call for the need to remove additional snags not referenced in this report, they should be relocated to the protected area. If the snags cannot be moved without falling apart they can be replaced with a similar sized firm log, or mitigated using the technique described in section 5.2, or replaced with sound logs and positioned upright in the ground. Other logs to be used as snags can readily be found by contacting sellers of firewood or those involved in clearing land for development. Feel free to contact The Wetland Corps for assistance. 5.4 Project Oversight The landowner will be responsible for project oversite associated with the standards and requirements of this HMP. TWC staff has met on site with the project applicant to explain the conditions of this plan. Mr. or Mrs. Werdall will be on site daily throughout the initial clearing work. Upon completion of the mitigation, TWC staff will review the site and provide an initial report to Mason County to PO Box 2854,Belfair,WA 98528 cell:360-620-0618,Office:360-372-2421 e-mail: boad40@peoplepc.com II. • i-n� TWC-20082 December,2007 Page No.5 confirm the standards listed in this HMP have been met and provide a summary of any additional mitigation necessary. 6.0 Monitoring Monitoring of the site will commence the first spring following project completion and by maintained on an annual basis. The information gathered will provide the following: 1) condition of the created standing dead trees; 2) any indication of use of the site by pileated woodpecker; 3) any unforeseen disturbance caused by the project and its effect on the intent of this plan; 4) corrective or supplemental measures necessary to provide desired conditions, desired conditions being the continued use of the site by pileated woodpecker. 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 Mason County Department of Community Development. 7.0 Conclusion The construction addressed in this HMP is proposed as recommended in the geotechnical report and is outside all regulated setbacks required by Mason County. At this point in the planning, it appears that two standing dead trees will need to be removed to complete this project. Snags will be created in a protected area as mitigation. Approximately one-third of the property will be maintained as a forested area supporting suitable habitat for pileated woodpecker. The overall habitat suitability and continued use of the site by pileated woodpecker are expected to be maintained using the recommendations listed in this HMP. A site map is shown in Figure 2 showing the approximate location of project components. I trust this information is sufficient for your needs at this time. Thank you for choosing TWC as your environmental consultant. If you have any questions feel free to call. Lee Boad The Wetland Corps Senior Ecologist PO Box 2854,Belfair, WA 98528 cell:360-620-0618,Office: 360-372-2421 e-mail:boad40@peoplepc.com )`W TWC-20092 December,2007 Page No.6 REFERENCES Hitchcock, L.C. and A.Cronquist, 1973. Flora of the Pacific Northwest. University of Washington Press.730 PP. Thomas J .Randeis, Michael Newton, Gregory M. Filip, Elizabeth C. Cole. Cavity-Nester Habitat Development in Artificially Made Douglas-Fir Snags. The Journal of Wildlife Management, Vol. 66 ,No. 3 (Jul.,2002),pp. 625-633 doi:10.2307/3803129 I Lewis, J. and J.M. Azerrad 2003, WDFW PHS Management Recommendations, Volume IV Birds. Pileated Woodpecker(Dryocopus pileatus) Pojar,J. and A.MacKinnon, 1994.Plants of the Pacific Northwest Coast. Lone Pine Publishing. 528 pp. Vancouver,British Columbia. US Department of Agriculture, Soil Conservation Service. Soil Survey of Mason County Area, Washington. September, 1960. United States Fish and Wildlife Service, 1993.National List of Plant Species that Occur in Wetlands Region 9 —Northwest. Resource Management Group PO Box 2854,Belfair,WA 98528 cell:360-620-0618,Office:360-372-2421 e-mail:boad40@peoplepc.com top ozone v uMVl'9942,TA?Am afaatilt kc � � � � •+ � 1 s I ,' T . PPI Parcel Approximate mate Pa ce I r� r Location till 2M UtDr MVID 141 f i r � ' � ���j� � it ,' I ._�„...�..�� If'� - ��•- � .-!' ` f• .�� t � '�•{ '-� t � .� Irla• �� sae��I to I mile � � ',•{ �;,�•` � .�� �� ._ rr FIGURE 1 VICINITY MAP Project Name: Werdall HMP Location: Belfair,Washington Project: TWCO8-1 —' — Client: Jeff and Pam Werdall TFH WETLAND CO"S Date: 1/08 �. 20 AP�P�RWON�ATE Lac TID4 \ , �; , \ \ SLUE I INCH•190 FM 390FTs \ -, APPRO7O)IATE LOCATIQI x x x x sY TOP OF SLOPE \x x x \x x x\ x x x, 120 x x x \ x x x \ x x A \ x 1 x X \ --50F'T x x x x x x \x x x x Snags to be Created _ \X X X X 160 — x -- x'x \ _ \x x x x \ \x x x x \x x M \ �Ni x x PROPOSED 2-STORY Cu ; X x / SINGLE FAMILY RESIDENCE x x X 140T 4 \ x' x X x x Snags to be Removed X / P2 PROPOSED SHOP DUELLING PROPOSED CA ME / �� APPROMATE LOCATION SURFACED IR VEVA / /;�^ SEPTIC too DRARf'IELD PROPERTY LINE LIMITS OF 90 Da ROAD UIIFIL.TRATION LOGGINGATER SILT FENCE OR / APPROVED TEMPORARY 1 J� EROSION CONTROL TP3 — ----- EXISTING CPP _ ---``--- CULVERT - 41) LEGEND PROJECT/ OWNER/LOCAT M vEGTTATtD11 WERDALL REMVK Q ---_—EXISTING PAVED ROAD -- x x SEECTWE E (E STATE ROUTE 3M GEOTE WERDAL L REPORT EVE JEFF AIQt PAN VERDKL WAVESTIG PARCEL NO 1221-Q-19M SELECTIVE NOTM MASON COUNTY. VASMNGTON iMRVESTDJG L EROSION CONTROL IS REQUIRED FOR THIS SITE GENERAL SET FENCE LOCATIONS,AND ALTERNATIVES TO SD_T FEIEES NAY BE ENGINEElb UID.IZED AS EVLAIIED IN TH[.GEOTECt3i1CAL REP®tT. ENVIRUTEM ENGINEERING —�SLOPE BDIECTION a CONTOURS ARE NUT PRECISE, MID OILY DEPICT GENERAL 74 HE HLOU) ROAD GRADESTOJIOGRAPHIC CONDITIONS.AND VERTICAL FIELD MEA TS CONFNIED FAIR, WASHNGTON 98M -_n EXISTDiG C[41TOUR SLDPE 3, MARIAM DETAILS ARE PROVIDED TPt TEST PIT IN APPENDIX D AND THE BODY Or THIS REPtStT. SITE PLAN FIGURE 2 SITE MAP EDITED FROM GEOTECH ` REPORT Project Name: Werdall HMP oArLocation: Belfair,Washington Project: TWC08-1 THE TVVETLAND CORPS Client: Jeff and Pam Werdall Date: 1/08 Note: Edited from Envirotech Engineering Geotechnical Report. All Locations Approximate Map Legend _. P SC e CONUS 0001 " 1 F r PE?.kSSF CONUS States 100K Lower 48 Welland Polygons l:ttuarone and Marine O+tei+w'FtHr F' ' "' t�»...... Approximate ' E%luarmn and M-umr ivetland -PF©i: Parcel Location Freshwater Emergent WoUand ;,IOFIT!q F:g•r Freshwater ForestedtShrub Wettartd ~1--- Freshwater Pond Lake b _. .. ....... - Other 30T Riverlae I '•t EMAN Bt3tEa i E ABiUSN I N ' E2USN 0 0.25 mile 1UsL .4 f Mao center:47"24' 10'N. 122.48'55'W Figure 3 National Wetiand Inventory Map Figure adapted from NWI Section 16 Township 22N Range 01 W Mapper website FIGURE 3 NWI MAP Project Name:Werdall HMT Location: Beifair,Washington Project: TWC08-1 Client: Jeff and Pam Werdall THE WETLAND CORPS Date: 1/08 e r Approximate Parcel Location IL Soil Onsite Conditions based on Mason County Soil Survey Subject Site Soils: Everett gravelly sandy loam,5 to 15 percent slopes(Ek) and 15 to 30 percent slopes(Eh)- The Everett series consists of somewhat excessively drained, pale-brown gravelly soils. They occur as coextensive gravel ridges on the glacial moraines or, more commonly, as fairly continuous outwash channels between ridges of Alderwood soils. They have developed upon assorted glacial till and outwash material. The rainfall is 45 to 60 inches a year. The vegetation is mainly drought-resistant madrone, manzanita, and kinnikinnick. Everett soils are droughty because the loose gravel and sandy subsoil and substratum offer little resistance to downward movement of water. The capacity of the surface soil to hold available moisture is low. Everett soils are in the eastern half of the county, in association with the Alderwood soils. They also occur in intricate patterns with the Kitsap and Indianola soils. Compared to the Grove soils, the Everett soils have a paler surface soil and subsoil and, in development, were dominated more by acid igneous parent rock. FIGURE 4 SOIL SURVEY Project Name: Werdall HMP Location: Belfair,Washington ''' ■�� Project: TWC08-1 3 111' Client: Jeff and Pam Werdall THE WETL_-'%ND CORPS Date: 1/08 D17-0084 +706686 0068 +706 0 {17{1 T8: Approximate Qd �., Parcel ,no Location ~� 2 : 170660 & 1706�* 170 6, r .z,• --�� 70 f 7 70 48 170 + h -F + F + ti 17066 62 . 17066 {1 28 170 20 �1706 ( �t 9 Pugiat mound 1706602 170' 1 o6606 1706608 17 0 t 0 ,r t $P u gat au u nt1 f t1 Y rowne(f% STRE k%IS SOILS r r' Stream Water T}-pe 1-5 i an;tde; HydnC Sails Stream T}-pe Unkuawn Ta:t::de; Hiehl�"Unstable Stream Water Type -5(Wes--ide) Hic-,Wc Erodible Stream Type U kwu-n(We-.--Lde; H;giiby Un.ta :e C _ :ii�tt•Eradil:le Water Type Cllange Flo Data or Gravel Pits FIGURE 5 DNR STREAM MAP Project Name: Werdall MAP Location: Belfair,Washington Syr Project: TWC08-1 THE WETLAND CORPS Client: Jeff and Pam Werdall Date: 1/08 Envirotech Engineering 74 NE Hurd Road, ' February 1, 2008 vx � Jeff and Pam Werdall T.. ._ PO Box 2517 I Belfair, Washington 98528 N "ICD - PLANNING, RE: Geotechnical Letter for Parcel Number 1222162 100001, 2501 State Route 302 Mason County, Washington Envirotech Engineering (Envirotech) completed a geotechnical report titled, "Geotechnical Report for Werdall Logging and Single Family Residence," dated October 18, 2007. This report recommended selective harvesting for much of the property. The Wetland Corps prepared the "Werdall Habitat Management Plan" for this property, and recommended to create two snag trees for potential nesting and roosting habitat in the intermediate selective harvesting area. Converting two mature trees into snags as recommended by the Wetland Corps will not be significantly detrimental to the stability of on-site slopes. Specifically, it is my opinion that creating two snag trees in the locations delineated by the Wetland Corps will not create additional hazards to the proposed residence or off-site residences. This is based on the adherence of the remaining recommendations outlined in the geotechnical report. Please contact Michael Staten at 360-275-9374 if you have any questions or require additional information. Sincerely, Envirotech Engineering PtiL CLYD'E'V 0F WASc 9T�� e- " 43045 ��� R�c1s1 -R�� SS�ONAL ECG EXPIRES JAN 10,2009 Michael Staten, P.E. Geotechnical Engineer OFFICE: 360-275-9374 CELL: 360-689-6045 FAX: 360-275-4789 EMAIL: envirotech@geotechnicalinfo.com