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06-105996FILE CITY OF CITY HALL Federal 33325 Sth Avenue Bo Way Mailing Address: PO Box 9718 Federal Way, WA 98063-9718 (253) 835-7000 6vww ci"(federaiway. com March 22, 2007 Leslie Kniffen Washington State Parks Dept. 2840 Riverwalk Drive SE Auburn, WA 98002 RE: File #06-105996-00-UP; DASH POINT STATE PARK SEWER IMPROVEMENTS 5700 SW Dash Point Road, Federal Way Dear Mr.Kniffen: On November 21, 2006, the City of Federal Way's Department of Community Development Services received your Use Process III application to replace multiple Large On -Site Sewage Systems (L.O.S.S.) by consolidating and connecting the park's waste water infrastructure to the Lakehaven Utility District. On December 18, 2006, the City issued a letter deeming your project "Incomplete." A subsequent resubmittal to the City was trade on January 30, 2007, and a letter of complete application was issued on February 8, 2007, in response to the resubmittal. An additional resubmittal was made on March 6, 2007, and is included in this analysis. ADDITIONAL INFORMATION REQuEsTED The following comments are based on an initial technical review of the application by City staff. Please resubmit plans identifying the review comments and please amend the SEPA checklist if applicable. Planning, David Lee (253-835-2622, david.lee@cityoffederalway.com) Site Plan: The plans indicate a "+" symbol throughout the project. The "+" symbol is not denoted within the plan legend. It has been assumed that this would be the location of the proposed sanitary sewer piping. Please clarify and install the "+" symbol within the plan legend. Please illustrate on the site plans a scaled representation of the sanitary sewer line to be installed. On page C-5, please indicate whether or not the depicted three -foot -wide dirt trail is an existing feature. 2. Land Use Process/Critical Areas: The proposed work outside of the existing reach comfort station will not be considered "normal maintenance". Normal maintenance is defined by the Federal Way Cify Code (FWCC Section 22-1 "Nor►nal Maintenance') as "...interior and exterior repairs and incidental alterations. Normal maintenance and repairs may include, but is not limited to, painting, roof repair and replacement, plumbing, wiring and electrical systems, mechanical equipment replacement and weatherization. Incidental alterations may include construction of nonbearing walls or partitions." The intent of the code is to allow for the maintenance of existing facilities and developments. The new development activity (clearing/grading/installation of sewer piping) would not constitute an existing facility. The Mr. Kniffert March 22, 2007 Page 2 exemptions listed in FWCC Section 22-1248 would not be applicable to this project as submitted. Furthermore, it has not been shown that the improvements have met the criteria for FWCC Section 22-1359(c) (enclosed) allowing for essential public facilities, public utilities, and other public improvements within a wetland buffer. Therefore: As depicted on plan C-4, the proposed sewer line traverses the wetland buffer (Wetland Buffer Complex "B" and "C") and also includes extensive clearing within the wetland buffers. As specified on the June 25, 2003 Preappiication Summary (for the June 19, 2003 Preapplication Conference), if the project involves intrusion into a regulated wetland or wetland buffer, then the review process would require Process IV Hearing Examiner's Decision. Approval of a request for improvements or land surface modification within a regulated wetland through Process IV shall be based on the criteria identified in FWCC Section 22-1358(d). Approval of a request for improvements or land surface modification within a regulated wetland buffer is based on the criteria identified in FWCC Section 22-1359(f). In general, the City would not advise or support installation of a sewer line through a wetland unless no other reasonable alternative exists. The federal Way Comprehensive Plan (FWCP) states in policy NEP43 that the City will protect its wetlands with an objective of no overall net -loss of functions or values. Please redesign your plans so that there are no intrusions into Wetland Buffer Complex `B" and "C,> However, if the applicant wishes to proceed with the Process IV Hearing Examiner Decision for a wetland buffer intrusion, please resubmit a revised Master Land Use Application and please remit payment for $1,490.00, the difference between the Land Use Process III ($2,129.00 paid [2006 feel) and Land Use Process W ($3,619.00). Additionally, please be aware that the change of Land Use Processes would require reinstitution of the notice requirements. Furthermore, if the applicant wishes to pursue the Land Use Process IV, please address the Land Use Process IV Hearing Examiner decisional criteria, as stated in FWCC Section 22-438(c) (enclosed) and the decisional criteria for wetland buffer intrusions as specified in FWCC Section 22-1358(d) (enclosed). The Wetland and Streams Assessment Letter Report prepared by Habitat Technologies, dated June 30, 2005, does not address the potential impacts of the proposal on wildlife, wetlands, streams, and/or wildlife habitat. Additionally, the geotechnical report prepared by HWA GeoSciences dated August 10, 2006 or the Advanced Sewer System Plan &. Report prepared by Huitt-Zollars dated June 2003 do not address these impacts (if any). Please amend your Wetland and Streams Assessment Letter. The environmental studies must evaluate impacts resulting from the proposed design. The State Environmental Policy Act (SEPA) checklist submitted to the city, completed by Washington State Parks and Recreation Commission signed/dated July 18, 2006, mentions under section B.5.a ("Animals") that bald eagles are present on site. The Wetland and Streams Assessment Letter Report prepared by Habitat Technologies supports this finding as well as it being a natural habitat for Blue/Green Heron. A state sponsored inventory of environmentally sensitive areas has also designated that your property may be located within a breeding/nesting area. If a Washington Department of Fish & Wildlife (WDFW) King, County Bald Eagle Management Plan has been filed, please submit a copy to the city. Also please submit any correspondence or permits/mitigation plans from WDFW regarding the Blue/Green Heron habitat. 06-105996 Doc. I 40062 Mr. Kniffen March 22, 2007 Page 3 Development Services, Kevin Peterson (253-835-2734, Kevin.peterson@cityoffederalway.com) Prior to starting work, the applicant shall apply (and attain) an EN (engineering) approval from Public Works, for review and inspection of the Temporary Erosion and Sedimentation Control (TESC) measures. The sewer main crossing of SW Dash Point Road will be reviewed under the EN, in lieu of a City right-of-way permit. The fee for the EN is $753.00 plus $63.00 per hour for any hours in excess of twelve hours for review and inspection of the project. CLOSING Your project is now on hold until we receive the information requested. With your resubmittal, please provide five copies ofa response letter which addresses each issue listed. For the plans requested, normally a full sized set of scaled plans are required, but for the purposes of review, this will not be required at this moment_ However, in -lieu of full sized plans, please provide five sets of 1/2 sized copies or l I "x 17" of the plans. For all other materials, please provide two copies. Please use the enclosed Resubmittal Form. You must resubmit your application materials within 180 days or your project will be deemed expired per FWCC Section 22-35. If you should have any questions you may contact me at 253- 835-2622 or david.lee@cityoffederalway.com. I look forward to working with you on this project. Sincerel David Lee Associate Planner enclosures 06-105996 Doc, ID. 40D62 'A CITY OF Federal Way June 12, 2007 Washington State Parks Dept. 2840 Rivei,walk Drive SE Auburn, WA 98002 /­') FILE CITY HALL 33325 8th Avenue South Mailing Address: Po Box 9718 Federal Way, WA 98063-9718 (253) 835-7000 ww w. 4o ffed eral way. c or n RE: File 406-105996-00-UP; DASH POINT STATE PARK SANITARY SEWER COLLECTION SYSTEM 5700 SW Dash Point Rd Dear Mr. Kniffen: On November 21, 2006, the City of Federal Way's Department of Community Development Services received your Use Process M application to replace multiple Large On -Site Sewage Systems (L.O.S.S.) by consolidating and connecting the park's waste water infrastructure to the Lakehaven Utility District. Pursuant to the development application submittal requirementsestablished in Federal Way City Code (FWCC) Sections 22-389 and 18-49, the City had 28 days to determine whether your application was complete. On December 18, 2006, the city issued a letter deeming your project "Incomplete." A subsequent resubmittai to the city was made on January 30, 2007. Pursuant to FWCC, your application after review of your resubmittaI was deemed complete as of February 8, 2007, based on the submittal requirements for Process III Project approval. Upon a review of a resubmittal made on April 27, 2007, Your project has since been approved as of June 12, 2007. The land use approval does not constitute authorization to begin construction activity of any nature. Both engineering approval and building permit issuance for any applicable structures must be obtained through the City of Federal Way prior to any construction activity including any clearing, gron. The remainder of this letter ading, or site preparati outlines future review processes required, gives a brief summ f the process uner the State Environmental Policy Act (SEPA) to date, and outlines procedure elating to appeals and approval periods for this decision. Additional requirements will be provided as City departments review the building Permits submitted for the improvements. REVIEW PROCESSES REQUIRED Zoning for the subject site is Suburban Estates {SE}. Public Section 22-61 I. parks are an allowed use under FWCC The public park use is reviewed under the Process III ew process. Project Approval revi Additionally, the Washington State Parks Recreation Commission conducted Aan in-house State Environmental Policy Act (SEPA) review. Project approval does not grant license to begin any type of site work, SEPA PROCESS The responsible Official at Washington State Parks Recreation Commission issued a Determination of Nonsignificance (DNS) on July 18, 2006, pursuant to the State Environmental Policy Act (SEPA) for the park's waste water infrastructure upgrade. The comment period ended on August 7, 2006. No comments or concerns were made to Washington State Parks Recreation Commission's initial determination. The final Washington State Parks Recreation Commission's evaluation for environmental checklist is hereby incorporated by reference as though set forth in full. Mr. Kniffen June 12, 2007 Page 2 PROCEDURAL MORMATION royal decision is valid for a period of one year from the date Unless modified or appealed, the project app of issuance of the decision. If no furtheeaction s ari ma taken e granted only year f a written request is submitted to the decision will expire. one, one-year ext Y Department of Community Development Services, 33325 a Avenue South, PD Box 9718, Federal Way, WA 98U63-9718, at least 30 days prior to the expiration of the decision. The project approval decision may be appealed by the applicant pursuant to FWCC Section 22-396. Any of a letter delivered Way, WA 98t763--9718 aent of nd be ac ompan 33325 8' Avenue South, PO Box 9718, Federalied by the Ces, appeal must be in the form � established fee, within 14 calendar days after the effective date of issuance of 5, 2 decision. 7 The.a pe 1 letter effective date of issuance is the date of the decision plus three calendar days, statement of the factual findings and must contain a clear reference to the matter being appealed conclusions of the Director of Community Development Services disputed by the person filing the appeal. ith tes Additionally, it is recommended that the applicant de�1�s. 'Ibis surrounding sneighborhood c n continues in of construction and a clarification of the prof efficient manner and provides a neighborhood awareness of the pending improvements. This decision does not constitute building and ps#antdardsrelatingdt❑ this development Bo h engineering a ng it does not waive compliance with future City of Federal Way codes, policies, approval and building permit issuance for any applicable structures must be obtained through the City of Federal Way prior to any construction activity including any clearing, grading, or site preparation. It is apparent from city records that an engineering pand building of such plans anpermit have ts must be obeen applied otained prior city in regards to this project. Approvals and issuance any construction activity. If you have any questions regarding this decision, please contact David Lee, Associate Planner, 253-835- 2622. Sincerely, K40�- AC,&I.Aj Kathy McClung, Director Community Development Services enc: Exhibit A - Findings for Approval Approved Site Plan c: David Lee, Associate Planner Doc. LD 41036 06-105996 CITY OF Federal Way FINDINGS FOR PROJECT APPROVAL Dash Point State Park Sanitary Sewer Collection System File #06-105996-00-UP 5700 SW Dash Point Rd, Federal Way, WA 98063 FILE Project Description — The following are findings for recommending approval to replace multiple Large On -Site Sewage Systems (L.O.S.S.) by consolidating and connecting the park's waste water infrastructure to the Lakehaven Utility District. The improvements are to be located entirely on site. 1. Zoning for the subject site is Suburban Estates (SE). Public Parks is an allowed use in this zone under FWCC 22-611, Public Parks, and the use is consistent with the comprehensive plan. 2. The particular site work for this project was reviewed under the Process M Project Approval review process. The Washington State Parks Recreation Commission conducted an in-house State Environmental Policy Act (SEPA) review; therefore, the City administratively reviewed this project under a Process III review. 3. The Process III application was submitted on December 18, 2006, and deemed complete on February 8, 2007. On February 14, 2007, a Notice of Land Use Application (NOA) for the project was published, posted, and mailed, in accordance with code requirements. The City received no comments on the NOA. 4. On July 18, 2006, a Determination of Nonsignificance (DNS) was issued for the proposal by the Washington State Park Recreation Commission's SEPA Official. The final Washington State Park Recreation Commission's evaluation for environmental checklist is hereby incorporated by reference as though set forth in full. The installation of a consolidated sanitary sewer infrastructure will be an improvement over the current multiple septic systems across the park, and therefore is consistent with the public health, safety, and welfare. 6. The streets in the area of the subject property have not been affected as the applicant proposes no alteration in the ingress or egress of the park. The site will use existing infrastructure to facilitate the new proposal as well as add internal service roads to the utility sheds. The existing streets and proposed new utilities adequately serve the anticipated demand of the proposal. Furthermore, as mentioned before, there is no alteration or addition of the ingress or egress to the subject site. The existing access to the subject property is at the optimal location and configuration. As proposed by the applicant, and required by the City, the project will incorporate existing building colors4o the two new silos at the receiving stations. The site will also use existing landscaping on the eastern property line (along SW Dash Point Road) to screen the two new silos. It has been determined that this project meets the requirements of Article XIX, Community Design Guidelines. Furthermore, the project is consistent with the guidelines set forth in FWCC 22-1638. 8. -Final construction drawings are subject to review for compliance with specific regulations, conditions of approval, and other applicable City requirements. This decision shall not waive compliance -with future City of Federal Vay codes, policies, and standards relating to this development.. Prepared by: David Lee, Associate Planner Date: May 30, 2007 Findings for Project Approval Page 2 Dash Point State Park Sanitary Sewer Collection System File #06-105996-00-UP/oor. i.o. 41037 `CITY OF Federal February 12, 2007 CITY HALL Way 33325 8th Avenue South Mailing Address: PO Box 9718 Federal Way, WA 98063-9718 (253) 835-7000 www.cityoffederalway.com Mr. Leslie Kniffen Washington State Parks Department 2840 Riverwalk Drive SE Auburn, WA 98002 Re: Permit #0,6-105996-00-UP; NOTICE OF COMPLETE APPLICATION Dash Point State Park Sewer Improvements / 5700 SW Dash Point Road, Federal Way Dear Mr. Kniffen: On November 21, 2006, the City of Federal Way's Department of Community Development Services received your Use Process III application to replace multiple Large On -Site Sewage Systems (L.O.S.S.) by consolidating and connecting the park's waste water infrastructure to the Lakehaven Utility District. Pursuant to the development application submittal requirements established in Federal Way City Code (FWCC) Sections 22-389 andl8-49, the City has 28 days to determine whether your application is complete. On December 18, 2006, the city issued a letter deeming your project "Incomplete." A subsequent resubmittal to the city was made on January 30, 2007. COMPLETE APPLICATION Pursuant to FWCC, your application after review of your resubmittal is deemed complete as of February 8, 2007, based on the submittal requirements for Process III Project approval. A 120-day time -line for reviewing the project has started as of this date. The city has 120 days from the date that an application is deemed complete to take action on the application. As you are aware, the 120-day time -line may be stopped if the City determines that additional information is required to meet the requirements of the FWCC. Having met the submittal requirements, pursuant to the FWCC, a Notice of Application (NOA) will be published in the Federal Way Mirror within 14 days, and other public notice will be given based on city procedures. The NOA will be posted in the Federal Way Mirror on February 14, 2007. If you should have any questions regarding this letter or your development project, please feel free to contact me at 253-835-2622, or david.lee@cityoffederalway.coni. Sincer David Lee Associate Planner c: File Doc. LD 39680 FiL CITY OF 01WI Al_l_ 83325 8th Avenue South Federal Way Federal Way, WA 98003-6325 . (253) 835-7030 www.cityoffedetwway.com July 11, 2012 Joe Ward, P.E. Washington State Parks and Recreation Commission PO Box 42650 Olympia, WA 98504-2650 RE: File #06-I05996-00-AD; PROCESS III APPROVAL MODIFICATION AND EXTEi sm REQUEST Dash Point State Park Sewer Improvements, 5700 SW Dash Point Road, Federal Way Dear Mr. Ward: The Community and Economic Development Department has received your June 6, 2012, letter requesting a modification and extension to the Process III land use approval for the Dash Point State Park wastewater improvement project. The proposal to construct a park -wide wastewater collection system that connected to the Lakehaven Utility District sewer system was granted Process 111 approval on June 12, 2007. The new proposal includes construction of twenty-five sewer hookups for individual recreation vehicle (RV) campsites in the lower campground loop. MODIFICATION REQUEST Proposed work includes installing erosion control measures to minimize site impacts during the construction project, trenching, installing 4- to 8-inch gravity sewer pipes from each RV campsite to new collection system, modification to water and electrical pedestals at each campsite, and site restoration of both Iandscaping and pavement. No trees are to be removed with this project. The Washington State Parks and Recreation Commission, acting as State .Environmental Policy Act (SEPA) responsible official, has determined this project to be exempt from environmental review pursuant to Washington Administrative Code (WAC) 197-1 I-800(23)(b) "Utilities". Per Federal Way Revised Code (FWRC) 19.15.090(3), the director has determined that the request to modify the Process III approval is consistent with city codes and therefore approved, subject to the following conditions: • A. site inspection shall be required once all improvements have been installed. Please contact Becky Chapin, Assistant Planner, at 253-835-2641 to schedule an inspection. EXTENSION CRITERIA Pursuant to FWRC 19.15.110, "Lapse of Approval — Time Extension," the request for a two year extension to the land use decision is approved, subject to the following criteria: a) Except for the first request for time extension, the applicant has made substantial progress to complete the project; Staff Response: This is your first time extension request. b) There are circumstances beyond the applicant's control, which prevent compliance with the time limits ofFWRC I9,15.100, or any previously granted extension; Staff Response: Project funds were limited at the time of initial application and approval. The proposed RV hookups could not be included in the approved scope of work, which are circumstances Mr. turd July 11, 2012 Page 2 beyond the applicant's control. Since then, State .Parks identified additional funding to construct the RV hookups and has modified the original scope of work; requiring a time extension to complete the project. c) The extension will not create or continue conditions that constitute a code violation or an attractive nuisance, contribute to erosion and sedimentation problems, or impact the public health, safety and welfare; and Staff Response: The site is already developed; there are no conditions that create a code violation or an attractive nuisance. d) Whether either physical conditions in the vicinity of the project or codes and requirements of the city, applicable agencies, and utility providers have changed to such a degree since initial approval that it would be contrary to the public interest to extend the life of the project, including but not limited to such factors as: i. Whether the adoption of new codes/standards would substantially affect project layout and storm drainage design; ii. The adequacy of mitigation and/or impact fees to address the cost of mitigation at the end of the expiration period; iii. Whether the delayed project is an impediment to other development projects in the vicinity as a result of traffic coneurrency reserved capacity. Staff Response: There have been no physical changes in the vicinity of the site or changes to city codes or standards that would affect this project. CLOSING Unless modified or appealed, the two year extension of the land use decision is valid until June 12, 2014. If no further action is taken by this extension deadline, the decision becomes void. FWRC 19.15.110 does permit additional extension opportunities that can be granted only if applicable criteria are met. Under FWRC 19,15.110(5), this extension decision may be appealed by any person who is aggrieved by this decision. The appeal must be in the form of a letter delivered to the Department of Community and Economic Development, and be accompanied by the established fee, within 14 calendar days of the date of this extension decision. Please contact Assistant Planner Becky Chapin, at rebecca.chapin@cityoffederalway.com or 253-835-2641, should you have any questions about this letter. Sincerely, Isaac Conlen, Planning Division Manager for Patrick Doherty, Director enc: Approved Site Plan c: Email to copy to:joseph.ward@parks.wa.gov Becky Chapin, Assistant Planner Ann Dower, Senior Engineering Plans Reviewer 06-105996 Dm. I D_ 61603 Don Hoch �f ' Director STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION 1111 Israel Road SW a P.O. Box 42650, Olympia, WA 98504-2650 . (360) 902-8500 Washington Telecommunication Relay Service at (800) 833-6388 www.parks.wa.gov Date: May 29, 2012 To: Joe Ward, Project Manager From: Randy Kline, Environmental Program Manager Re: Dash Point State Park Recreational Vehicle (RV) Sewer Connections - State Environmental Policy Act (SEPA) Exemption The staff of the Washington State Parks and Recreation Commission proposes to construct recreational vehicle (RV) sewer connections in the lower campground loop (identified as Loop B and containing sites 1-51) to connect into the existing collection system. Hookups will all be gravity sewer lines no larger than 8 inch diameter and generally 4 inch diameter in size. The project will provide sewer hookups to sites 4-8, 26, 29, 30, 32, 349 36 thru 50, for a total of 25 sites connected. No construction is planned in critical areas. The project site is located in Dash Point State Park, 5700 SW Dash Point Road, Federal Way, Washington 98023. Parcel numbers 1021039002, 1521039001 and 1421039008. No work will be undertaken wholly or partly on lands covered by water, which includes marshes, bogs, or swamps. All such areas will be avoided. There will be no rezone or any license governing discharges to air or water required for this proposal. This project has been determined to be exempt from the procedural requirements of the State Environmental Policy Act (SEPA) pursuant to Washington Administrative Code (WAC) 197-11- 800(23)(b) "Utilities." This exemption will be placed in the project file as documentation of SEPA compliance. SEPA Responsible OfficialC' ____ Randy Kline, Environii ntal Progrann Manager RESUBMITTED JUN 0 6 2012 CITY OF FEDERAL WAY CDS :1 STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION PARKS DEVELOPMENT - SOUTHWEST REGION 1111 Israel Road • Olympia, WA 98504-2650 • (360)725-9750 Fax (360) 664-0312 http://www.parks.wa.gov - TDD: (360) 664-3133 RESUBMITTED June 5, 2012 To: Isaac Conlen JUN 0 6 2012 City -of Federal Way CITY OF FEDERAL WAY CDS From: Joe Ward, P.E. Environmental Engineer Washington State Parks RE: Land Use Decision 06-105996-UP: Amendment to Scope of Work and Time Extension for Sewer Improvements at Dash Point State Park The Land Use Decision authorized Washington State Parks to construct wastewater system improvements at Dash Point State Park. All work identified in this land use decision was completed in May, 2011. The wastewater improvement project eliminated on site drain fields in Dash Point State Park and constructed a park wide wastewater collection system that connected to the Lakehaven Utility District (LUD) sewer system. All wastewater flows generated in the park are now sent to LUD. As project funds were limited at the time of the initial application that resulted in this land use decision, sewer hookups to twenty five individual recreational vehicle (RV) campsites in the lower campground loop on the south side of Dash Point Road were. not included in the scope of work. In January, 2012 State Parks identified. additional funding to construct these RV sewer hookups. This is a request to amend the Land Use Decision to include construction of these twenty five sewer hookups at designated campsites at Dash Point State Park's lower campground loop. These sites are: 4 thru 8, 26, 29, 30, 32, 34, and 36 thru 50. Work includes: installing erosion control measures to minimize site impacts during this utility construction project, trenching, installing 4 inch to 8 inch gravity sewer pipe from each RV campsite to the new collection system, modification to the water and electrical pedestals at each campsite to satisfy State Department of Health requirements, trench backfill and compaction, and site restoration — both landscaping and asphalt pavement. Minimal site clearing and grading is required for this work. Pipeline routing from each campsite to the main sewer line is intended to avoid significant trees with the goal of no significant tree removal on this project. I also request a time extension until June 30, 2013 to complete this work. Construction timing for this project is planned for the October, 2012 to May, 2013 timeframe. Funding for this project must be spent before June 30, 2013. Isaac thanks for your consideration of this request. If you require any additional information, please contact by email at joseph.ward(c7c�parks.wa. ag_v or telephone at 360-902-8645. CITY OF �. Federal Way DATE: June 12, 2012 MEMORANDUM Community Development Services. Department TO: Ann Dower, Senior Engineering Plans Reviewer Scott Sproul, Plans Examiner Brian Asbury, Lakehaven Utility District Chris Ingham, South King Fire & Rescue FROM: Becky Chapin SUBJECT: File # 06-105996-00-UP, Revised Project Scope Resubmittal Dash Point State Park Sewer Improvemetns, 5700 SW Dash Point Road Attached please find a resubmittal for a modification to the Dash Point State Park sewer system improvements. This is a revision from the previously approved project. The new scope adds RV hookups to the site. As part of the new scope of work, an extension to the approved UPIII application is requested. Approval was granted June 12, 2007 and improvements must be completed within 5 years, or June 12, 2012. Per FWRC a two year extension to the approval may be granted, which will allow completion of the modification request. Please review and email any comments. Thanks! DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES RESUBMITTED 33325 81h Avenue South Federal Way, WA 98003-6325 CITY Of 253-835-2607; Fax 253-835-2609 Federal Way JUN 0 6 2012 w%vw.6tvof1"edera1vay.eain CITY OF FEDERAL WAY CDS RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. "Pleasenote.- Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Mailed resubmittals that do not include this form or that do not contain the correct number of copies will be returned or discarded. You are encouraged to submit all items in person and to contact the Permit Counter prior to submitting if you are not sure about the number of copies required. ** ANY CHANGES TO DRAWINGS MUST BE CLOUDED. Project Number: ( - ( 4 �__ L SL � Project Name: cs Project Address: Project Contact: RESUBMITTED ITEMS: Phone: �r)c: 2 o�f= # of Copies ** Detailed De nption of Item ** Always submit the same number of copies as required foryourinitial application.** Resubmittal Requested by: Letter Dated (Staff emuer) OFF%CE USE ONL Y RESUB #• Distribution Date; By. Dept/Div Name # Description Building Planning%kC PW Fire Other Bul Ietin # 129 — January], 2011 Page 1 of 1 kMandoutAResubmittal Information �v��ical /firms'-S C �-� ,� � ��C¢' CITY OF CITY HALL FILE 1�kFederal Way 33325 8th Avenue South ■arf Mailing Address: PO Box 9718 Federal Way, WA 98063-9718 (253) 835-7000 www.cityoffederalway.com December 27, 2006 Leslie Kniffen Washington State Parks Dept 2840 River -walk Drive SE Auburn, WA 98002 RE: File#06-105996-00-UP/06-105998-00-SH Dash Point State Park Sewer Improvements, 5700 SW Dash Point Rd Dear Leslie Kniffen: The Department of Community Development Services received information you submitted on November 21, 2006, for the proposed waste infrastructure upgrades at Dash Point State Park. The project is currently being reviewed under the provisions of Federal Way City Code (FWCC) Chapter 22, Article VI, "Process III Review - Project Approval". State Environmental Policy Act (SEPA) has been done by the applicant and a copy of the SEPA Determination of.Nonsignificance (DNS) has been received by the City. Pursuant to the requirements of the FWCC, the City has 28 days to determine whether an application is complete. INCOMPLETE. APPLICATION During the course of the City's review, the following items were found to be incomplete. In order for your application to be considered complete and ready for processing, the following items below must be provided: 1. Project Narrative: In the submittal package, there are several different project narratives within varying reports (i.e. wetland report, geotechnical report, Advanced Sewer System Plan & Report, etc.) each differing in the scope and nature of the work proposed. Please submit a separate project narrative that clearly identifies the scope and nature of the work proposed. Please include: a. Description/explanation of what a "Multiple LOSS System" is. b. The depth and approximate amount of cut and fill of all trenching. C. Detail of what is involved with the upgrading of existing pump stations/comfort stations. d. The Advanced Sewer System Plan & Report dated "June 2003" mentions that this project will be phased, but there is no mention of the timing of the phasing. Please supply a preliminary phasing schedule if this is to be a phased project. e. Please identify CLEARLY which components of the project are "new" and which portions of the project are "replacement/maintenance". 2. Wetland Report: The wetland report submitted identifies the stream on -site as a "Major" stream per FWCC Section 22-1 "Major Stream". Please clearly delineate on the site plan the ordinaryhigh water mark (OHWM) for both banks of the stream and also delineate the 100-foot major stream setback from the OHWM. '" `'"'C;eslie Kniffeh December 27, 2006 Page 2 Geotechnical Report: The geotechnical report dated June 30, 2006, and another report prepared August 10, 2006, (prepared by HWA Geosciences Inc.) needs to specifically address the City of Federal Way's City Code Article XIV "Critical Areas". More specifically, a description of how the proposed development will impact each of the following on the subject property and nearby properties: a. Slope stability, landslide hazard and sloughing. b. Seismic hazards. c. Groundwater. d. Seeps, springs and other surface waters. e. Existing vegetation. Additionally, the geotechnical report should address any slopes greater than 40% within 25' of any and all construction activity. Furthermore, if any slopes greater than 40% exist, the tip and toe of the slope must be clearly delineated on the site plan. 4. Dash Point State Park Advanced Sewer System Plan & Report: The document with the aforementioned title, dated June 2003, and prepared by Huitt-Zollars, is stamped as "Draft". Please submit the final version of the report. If there has been no modification to the report submitted, please submit a letter to the City clarifying that this report is the most current report available. Please submit eight copies of revised required plans, and four copies of any revised reports. After receipt of the requested information noted in the incomplete application section of this letter, the department will notify you within 14 days whether your application is considered complete or what, if any, information is still needed. It is important to note that the department cannot begin processing your formal application until all items are submitted. Project Cancellation - Pursuant to FWCC Section 22-34, if an applicant fails to provide additional information to the City within 180 days of being notified that such information is requested, the application shall be deemed null and void and the City shall have no duty to process, review, or issue any decisions with respect to such an application. If you should have any questions regarding this letter or your development project, please feel free to call me at 253-835-2622. Sincerely, A . ta--- fmt- David Lee Associate Planner enc: Resubmittal Form c: Kevin Peterson, Engineering Plans Rcviewer Scott Sproul, Acting Building Official 06-105996 Doc. I. D. 39136 ECE{VE® • � NOV 2.1 2006 CITY OF QITY Q1= FE,DERAL WAY Federal Way DDILDING DEPT. APPLICATION NO(S.) Project Name MASTER LAND USE APPLICATION DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES 33325 8`h Avenue South PO Box 9718 Federal Way WA 98063-9718 253-835-2607;Fax 253-835-2609 www. c i tyo f fide ru lwa y.corn � 11- V �o fDate -/V Property Address/Location 5"? 0 U • L, Pn r r� Parcel Number(s) -IV &111 Project Description L !-77l `, itu Z OSS PLEASE PRINT Type of Permit Required Annexation Binding Site Plan Boundary Line Adjustment Comp Plan/Rezone Land Surface Modification Lot Line Elimination - Preapplication Conference Process I (Director—s Approval) _ Process II (Site Plan Review) Process III (Project Approval) Process IV (Hearing Examiner's Decision) Process V (Quasi -Judicial Rezone) Process VI SEPA w/Project SEPA Only Shoreline: Variance/Conditional Use Short Subdivision Subdivision Variance: Commercial/Residential Required Information t - Zoning Designation rA f01it. 4mprehensive Plan Designation 6An of Existing Improvements + Value of Proposed Improvements International Building Code (IBC): Occupancy Type Construction Type Applicant Name: L. ,:9 �l c C . <0 Address:,;t,?ye® City/State: A,-,b L. rr., WA bct z. Zip: _ Phone: [2,t 3,7 z2a 4- [`' 5'6- 1 Fax: C_ 7 } Ce,3t SR�.f Email:1;rli�n=Y Signature: Agent (if different than Applicant) Name: Address: City/State: Zip: Phone: Fax: Email: Signature: Owner Name: VA 5,q W6q_,9,V 5-rA-7-t PA R K S Address:3� City/State: Zip: �l Phone:(, 6,o) Fax: Email: Signature: Bulletin #003 — August 18, 2004 Page I of I k:\Handouts\laster Land Use Application Federal Way Project No.: 03-102233-00 Project Name: Dash Point State Park Sewer Improvements King County Tax Parcels 1021039002,1421039037,1421039008,1421039092,1421039093,1521039001 Pierce County Tax Parcels 0321154005, 0321154000, 0321151000, 0321151002, 0321152001, 0321152002, 3770000180,0321103000,0321152010 4ik RESUBMITTED CITY OF ,BAN 3 U 2007 Y OF FEDERAL Federal Vila cl BUILDING DEPTWAY. COMMUNITY DEVELOPMENT SERVICES 33325 8TH AVENUE SOUTH • PO BOX 9718 FEDERAL WAY, WA 98063-9718 253-835-2607• FAX 253-835-2609 www.cit ❑ ederaiwa ..0 RESUBMITTAL INFORMATION This completed form MUST accompany a// resubmitta/s. "Please note: Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Mailed resubmitials that do not include this form or that do not contain the correctnumberofcopies will be returned ordiscarded. You are encouraged to submit all items in person and to contact the Customer Service Counter prior to submitting if you are not sure'about the number of copies required. ** Project Tracking Number: - �_ 0 5 � 9 (2 Project Name: fin- « n.,,, r } r• , Project Address: ' 5C-0 Project Contact: -7,( � t-7 APhone: ZS 3 Zbd?, —zs � Resubmitted Items: # of Copies ** Detailed Description of Item (it, fjs SR 1 C iv, ** Submit the same number of copies as required for your initial application.** Resubmittal requested by: Letter Dated: (Staff Member) + f__ i f �C7 ~i`iY 1 OFFICE USE ONL. Y r Distributed to: ��_ R_ Date: ! ` 3 0 - 07 By: ��^ Bulletin # 129 — August 24, 2004 Page I of 1 k:\Handouts — Revised\Resubmittal Information e. Rex Derr Director STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT OFFICE 2840 Riverwalk Drive SE • Auburn, Washington 98002 • Phone: (253) 931-3904 • Fax: (253) 931-3921 January 30, 2007 RESUBMITTED David Lee, Associate Planner City of Federal Way 33325 8"' Avenue South P.O. Box 9718 Federal Way, WA 98063-9718 JAN 3 0 2007 CITY OF FEDERAL WAY BUILDING DEPT. RE: Items Identified As Incomplete, City of Federal Way Process III Review Application, File#06-105996-00-UP/06-105998-00-SH, Dash Point State Parks Sewer Improvements, 5700 SW Dash Point Rd Dear Mr. Lee: Washington State Parks received the City of Federal Way December 27, 2006, letter (CFW- 27DEC2006-Letter), which identified the submitted project application as incomplete. The CFW-27DEC2006-Letter provides a list of items that must be provided as for the application to be considered as complete. This response letter provides information to address the items that contributed to the incomplete determination. Item 1. Protect Narrative: Please find attached a revised project narrative that addresses: the depth and approximate amount of cut and fill of all trenching; details of what is involved in upgrading an existing pump station; and clearly identify which project components are "new" and which are portions are considered "replacement/maintenance" (identified as items 1. b., c., and e., in your letter). The project narrative will not present the term "Multiple Loss System" and will present a limited discussion of project phases, based on the discussions immediately below. "Multiple Loss Systems", (identified as item I.a. in your letter): The submitted application uses the term "Multiple LOSS System', however it did not define the term. The term "LOSS" is an acronym for "Large On -Site Sewage Systems" as defined in WAC 246-272B, and are septic systems with a capacity of over 3,500 gallons per day. LOSS are regulated by Washington State Department of Health. Dash Point State Park currently has 8 active septic systems, thus the term 40 6Q - a to i City of Federal Way, David Lee RE: Items Identified As Incomplete, City of Federal Way Process III Review Application January 30, 2007 Page 2 of 3 "Multiple". However, not all the existing septic systems are LOSS, and it would be more accurate to describe the park a containing "eight existing onsite septic systems". The proposed collection and conveyance system will allow State Parks to transition away from and abandon these existing onsite septic systems. "Project Phases",: (identified as item Ld. in your letter): The Dash Point State Park Advanced Sewer System Plan & Report June 2003'DRAFT, , describes phases to the project, Phase 1 — 3, and comments on Future Phases (pages 23 and 24). The presentation of the phases in the report is based on the consultants understanding of budgeting constraints and how the project was perceived by Washington State Parks in 2003. Since the preparation of this report, Washington State Parks has prepared a design that serves the entire park and in general addresses the goals of the three phases as one project. Future sewer work at Dash Point State Park, may include replacing vault toilets at Picnic Point and the Group Camp Loop with facilities connected to the new sewer system. Future sewer work may also include providing recreational vehicle sewer hookups at individual camp sites in the camp loops. This future work is funding dependant, and has not been authorized at this time. During the project design it was determined that the existing force main from the beach comfort station was in serviceable conditions. Therefore it was decided to intercept the existing forcemain and connect it to the proposed system, rather than upgrade it. Replacing this force main was previously identified as part of the phase construction plan. Item 2. Wetland Report: The ordinary high water mark (OHWM) for both banks of the "Major Stream", and the 100-foot major stream setback from the OHWM, have been delineated. Please see attached plan sheets. Item 3. Geotechnical Report: The attached HWA Geosciences January 26, 2007, letter, titled: Critical Areas Review, Sanitary Sewer Collection System Project, Dash Point State Park, Federal Way, Washington, provides the information identified in the CFW-27DEC2006-Letter specific to "Critical Areas". Item 4. Dash Point State Park Advanced Sewer SysteIat_Plan &. Report: There will be no effort to finalize the draft Dash Point State Park Advanced Sewer System Plan & Report June 2003, and thus it is the most current report available. Please find attached eight (8) copies of the revised required plans, four (4) copies of the project narrative, and four (4) copies of the HWA Geosciences January 26, 2007, technical letter. No reports were revised. We look forward to receiving notification regarding completeness within 14 days of receiving this requested information. City of Federal Way, David Lee RE: Items Identified As Incomplete, City of Federal Way Process III Review Application January 30, 2007 Page 3 of 3 Additionally, at this time it would be beneficial to provide you a project update. State Parks is progressing rapidly toward the completion of a finalized plan set as well as completion of the Technical Information Report. We anticipated completion of these documents around mid - February. Sincerely, +ut.� John i za, PE Environmental Engineer WA State Parks, Puget Sound Parks Development JMZ Attachments: Revised Project Narrative (4 copies) HWA Geosciences, Inc., January 26, 2007, Technical Letter (4 copies) Revised required plans (8 copies) cc: Les Kniffen, WA State Parks, Environmental Specialist Attachment to State Parks January 30, 2007, response letter to the City of Federal Way (Ref: File#06-105996-00-UP/06-105998-00-SH) Prepared by John Zinza, PE, Washington State Parks. Project: Sanitary Sewer Collection System Location: Dash Point State Park, 5700 SW Dash Point Road, Federal Way, WA PROJECT NARRATIVE per City of Federal Dec. 27, 2006 Letter This project transitions Dash Point State Park from 8 onsite septic systems/drainfields to a collection conveyance system with discharge to an existing Lakehaven Utility District (LUD) Sewer stub, located near the east end of the park. Wastewater treatment will occur offsite at the LUD Lakota Wastewater Treatment Plant. This project consists of a new collection and conveyance system and replacement/maintenance to existing wastewater facilities. New wastewater collection and conveyance components include: 1) Main Pump Station: a new main pump station consisting of wet well, valve vault, electrical transformer, precast concrete electrical control building, and new gravel access road. 2) Sanitary Sewer Force Main: a new 4-inch diameter HDPE, sanitary sewer force main, approximately 4,110 lineal feet (LF), will be connected to a new discharge manhole. This new force main follows a common alignment with a portion of the gravity system (shared trench) for approximately 1,600 LF, and then proceeds in its own alignment to a connection with a discharge manhole in the eastern portion of the park. Access to the new terminal manhole will be either through an existing Lakehaven Utility District easement at the Dash Point Townhouses or by via parks property. 3) Gravity Sanitary Sewer Main Lines and Manholes: the installation of approximately 5,040 LF of new 8-inch and 6-inch PVC main line with 2 ductile iron drop connects, with 35 manholes. Trenchless construction (bore and jack) will be used to install about 80 LF of gravity sewer under Dash Point Road, approximately 450 west of the entrance. 4) New Electrical Feed: A new electrical feed will be installed paralleling the new gravity sewer main from the north side of Dash Point Road to the new main pump station. The electrical feed will be installed by trenchless methods where it crosses Dash Point Road. 5) Gravity Sanitary Side Sewer: The installation of approximately 354 LF of new 4- and 6-inch PVC side sewer serving twelve park facilities. JAN 3 0 2007 CITY OF FEDERAL WAY BUILDING DEPT. Dash Point SP, Sanitary Sewer Collection System Project Narrative Prepared Jan. 30, 2007 Page 2 of 3 5) Demolition: Abandonment of eight septic systems, a pump station in the lower camp loop, targeted demolition at the beach pump station, and miscellaneous pavement and concrete removal and restoration. Replacement/maintenance portions of theproject: 1) Modifications to Beach Pump Station: work on the beach pump station consists of replacing existing pumps with an Orenco Universal biotube pump vault, replacing the existing valves with new valves located in new header discharge vault, and replacement of electrical controls from the existing drywell to inside the adjacent comfort station with access by a new external door, and miscellaneous work necessary to update this pump station. 2) Reuse of Existing Beach sanitary sewer force main: Approximately 1,450 LF _of 1,6.71 LF of the existing beach pump station force main will be reused at part of this project. It will be connected to the replacement components at the Beach Pump Station at one end, while the discharge end will be intercepted and connected at a new discharge manhole. The remainder of the force main will be abandoned along with the demolition of the drainfield, to which it was connected. The depths and approximate amount of cut and fill of all trenching anticipated for this project are as follows: 1) Main Pump Station: Excavation depth for the new wet well is expected to be about 15 feet. The new gravel access road will result in about 600 cubic yards (CY) of cutting and about 250 CY of fill. 2) Sanitary Sewer Force Main: new force main pipe depths will range from about 3 feet to about 12 feet in the shared trench. Where the force main is separate from the gravity sewer pipe, trench depths will range from a minimal cover of 3 feet, to occasional depths of about 13.5 feet, which are necessary to maintain positive slope. For the force main only trench, approximately 970 CY of cuts and 615 CY of native fill and 310 CY of bedding are anticipated to construct the force main only part of the system. 3) Gravity Sanitary Sewer Main Lines: Pipe depths and manhole depths vary and range from about 5.5 feet to about 13.5 feet. Approximately 5,050 CY of cuts, 2,615 CY of native fill, 1,315 CY of imported gravel fill and 620 CY of imported bedding are anticipated to construct the gravity sewer main, and the section of the system where the gravity and force main pipe share a trench. 4) Sanitary Side Sewer: Depths of side sewer necessary to connect the park facilities ranges from approximately 2.5 feet to 9 feet. Approximately 95 CY of Dash Point SP, Sanitary Sewer Collection System Project Narrative Prepared Jan. 30, 2007 Page 3 of 3 cuts and 58 CY of native fill and 32 CY of bedding are anticipated to construct the side sewers. Total Cuts and fills for trenching associated with this project area as follows: Approximately 6,700 CY of cuts, 3,300 CY of native fill, 1,373 CY of imported gravel fill, and 960 CY of imported pipe bedding. Future Sanitary Sewer Collection System Work: Future sewer work at Dash Point State Park, may include replacing vault toilets at Picnic Point and the Group Camp Loop with facilities connected to the new sewer system. This future sewer work may also include providing recreational vehicle sewer hookups at individual camp sites in the camp loops. This future work is extremely conceptual at this point, funding dependant, and has not been authorized at this time. 111 HWA GEOSC.IENCES INC. .. .� G CO i lY ll 11 iii It %' 1"1 vC 177)'III If;ll ll14 1111"' . I Ir111 oQ1•,)lotl• GioL 11 P 1fi7111) Ii•! If) i I 111; 11 Cc I, io II C' 717.>I i11t January 26, 2007 HWA Project No. 2006-044-300 Contract No. AE 507-045 Puget Sound Region Parks Development Service Center Washington State Parks and Recreation Commission 2840 Riverwalk Drive SE Auburn, Washington 98002 Attention: Mr. John Zinza, P.E. Subject: CRITICAL AREAS REVIEW SANITARY SEWER COLLECTION SYSTEM PROJECT Dash Point State Park Federal Way, Washington Dear Mr. Zinza, This report summarizes the results of our review of site soils and geologic hazard conditions in support of the Washington State Parks and Recreation Commissions application for a permit from the City of Federal Way (COFW) for the construction of the Sanitary Sewer Collection System Project at Dash Point State Park, Federal Way, Washington located as shown on Figure 1. A scope of work and cost estimate for this supplemental geologic review was submitted to State Parks on January 6th, 2007. Verbal authorization to proceed was given by John Zinza on the 22" d of January, 2007. Our services were performed in general accordance with the scope of work. SITE AND PROJECT DESCRIPTION SITE DESCRIPTION Dash Point State Park is located on the shore of Puget Sound approximately two miles north of Cormnencement Bay, within the City limits of Federal Way, Washington. Dash Point Road (SR 509) divides the park into a northern day use area and a southern campground area. The proposed sewer lines will be located on both sides of the park and would cross under SR 509. The topography of the park rises from sea level at the beach pump station to 19730 - 64t1, Avenue w. about 210 feet above sea level at the northern sewer force main discharge Crude 100 R ES B I-ff C D 1-pmwood.11'el 980363957 Tel: 425.774.0106 JAN qhp2007 Pax: 425.774.2714 www.hwageosciences.com CITY OF BUILDING DEPT.WAY January 26, 2007 HWA Project No. 2006-044-300 manhole on the northeastern part of the project site. Further south and southeast, the elevation drops to about 145 feet at the proposed primary pump station in the southwest, and further to the east, the elevations rise to about 260 feet at the connection point of the proposed primary force main to the existing Lakehaven Utility District sewer. The lines pass through moderately to densely forested areas. PROPOSED IMPROVEMENTS The project transitions the park from eight septic systems/drainfields to a collection conveyance system with a discharge to an existing Lakehaven Utility District (LUD) sewer stub. The general layout of the proposed sanitary sewer collection system is shown on the Sewer Layout Map, Figure 2. Wastewater treatment will occur at the LUD Lakota Treatment Plant. The proposed new collection and conveyance system includes: 1) Pump Stations: a new main pump station and gravel access road, in addition to repairs to existing beach pump station; 2) Sanitary sewer Force Main: a new sanitary sewer force main (4-inch HDPE) approximately 4,110 LF in length, and reusing approximately 1,450 LF of 1,671 LF of the existing beach pump station force main which will be connected to a new discharge manhole; 3) Gravity Sanitary Sewer Main lines and manholes: approximately 5,040 LF of new 8-inch and 6-inch PVC main line with 2-inch ductile iron drop connects, with about 35 manholes; 4) Gravity Sanitary Side Sewer: the installation of approximately 354 LF of new 4-and 6-inch PVC side sewer serving twelve park facilities; 5) Demolition: Abandonment of eight septic systems, a pump station in the lower camp loop, targeted demolition at the beach pump station, and miscellaneous pavement and concrete removal and restoration. PURPOSE The purpose of this critical areas review was to summarize the geologic and soils and ground water conditions within the project site, and describe how the proposed development will impact each of the following (per Federal Way City Code Article XIV, Section 22-1286(a) 1) on the project site and nearby property: a) Slope stabilily, landslide hazard and erosion, b) Seismic hazards, c) Groundmater, d) Seeps, springs and other surface iwalers; 2006-044 Sanitary Server Collection System -CAR 2 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 e) Existing vegetation. Our work included review of existing geologic and geotechnical data developed previously by; HWA (2006) during our geotechnical investigation conducted for the design of the improvements, by the United States Geological Survey, Washington State Department of Natural Resources, the USDA -Natural Resources Conservation Service, and the City of Federal Way's Critical Areas Map. An excerpt of the City of Federal Way's Critical Areas Map that includes the project site is depicted on Figure 3. As shown on Figure 3, portions of the project site are considered potential landslide and erosion hazards areas. GENERAL GEOLOGY Geological information for the project area was obtained from the Geologic Map of the Tacoma North 7. 5-Minute Quadrangle, Washington, US Geological Survey, Miscellaneous Field Investigation, Scale 1:24 000 by Troost K.G. and Booth, D.B. (in review). The project site is mainly underlain by Vashon glacial till deposits and advance outwash sediments. The glacial till deposits are comprised of a poorly sorted, non - stratified mixture of clay, silt, sand, gravel, and cobbles with scattered boulders, and were deposited by the Puget Lobe of the Cordilleran Ice Sheet, during the Vashon Stade of the Fraser Glaciation. Glacial till soils are typically very dense, resulting from the weight of the glacial ice hundreds of meters thick, which over -rode the till. The geologic mapping further shows that the northern and western part of the park are underlain by advance outwash deposits consisting of light gray, stratified, compact sand and gravel, and the eastern part of the park is underlain by Vashon recessional outwash sediments comprised of light brown, loosely compacted sand and gravel. Older, Pre -Olympia glacial sediments are exposed in the ravine of the unnamed creek situated along the western park boundary and are comprised of dense sand and gravel and hard silts and clays. A portion of the USGS map discussed above covering the project area is depicted on Figure 4. GROUND WATER Regionally, groundwater is expected at depth within the Vashon advance outwash and the older Pre -Olympia coarse -grained deposits (Woodward, D.G., et al, 1995). Locally, depth to groundwater varies with location, geologic unit encountered and season. During exploration, as noted on the boring and test pit logs (HWA, 2006), groundwater was encountered typically within Vashon advance outwash and sandy layers contained in the Pre -Olympia fine-grained deposits or as minor seepage in recessional outwash or weathered till soils perched over dense low permeability Vashon Till. 2006-044 Sanitary Sewer Collection System -CAR 3 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 SOILS According to the Soil Conservation Maps for King and Pierce Counties (MRCS, online web soil survey, 2007), the site is predominately overlain by two major soil series: Alderwood gravelly sandy loam-6 to 15 percent slopes and the Alderwood/Kitsap soils, 30 to 65 percent slopes. The Alderwood gravelly sandy loam formed on glacial till uplands. The soil is slowly permeable, runoff is slow to medium and erosion hazard is moderate. The Alderwood/Kitsap soils formed in a glacial lake setting. The runoff is rapid to very rapid and the erosion hazard is severe to very severe. The site soils map is depicted on Figure 5. SEISMICITY The project site is located in a moderately active seismic zone. Earthquakes have been historically recorded in the area for about the past 160 years. Western Washington is located in a moderately active seismic zone due to its location at the edge of an active plate margin where subduction is occurring. Currently, the North American plate is overriding the oceanic, or Juan de Fuca plate at a rate of about 1.5 inches per year. The converging plates produce typical subduction zone features. These features include a small trench off the west coast of Washington State where the Juan de Fuca plate begins its descent below the North American plate and an active volcanic arc in the overriding plate, where partial melting of the subducting Juan de Fuca plate generates the geologically young and active volcanoes of the Cascade mountain range. The area between the trench in the Pacific to the west, and the Cascade volcanoes in the east, is called the Cascadia Subduction Zone Researchers identify three earthquake source regions in this tectonic setting: • The first source region delineated is in the subducting Juan de Fuca plate. This source is relatively deep, about 45 to 60 km. s The second source zone is in the overriding North American plate. This source zone produces shallow crustal earthquakes with focal depths less than 30 km. A third source region is located at the interface between the converging plates. The 1949 Olympia earthquake, the 1965 Sea-Tac, and the 2001 Nisqually earthquake are recent events associated with the subducting Juan de Fuca plate. 2006-044 sanitary Sewer Collection Syslcm-CAR 4 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 Geophysical investigations suggest that earthquakes may also occur from a network of faults beneath the Puget Sound Basin. The United States Geological Survey recently identified several major faults in the region using geophysical methods, including the Tacoma Fault Zone which encompasses the project area. Dating of coastal scalps coincident shoreline deformations and fossil evidence suggests that the Tacoma Fault Zone has been active during Holocene time approximately dated at between A.D. 770 to 1160 (Sherrod, et al, 2004). POTENTIAL IMPACTS CONSTRUCTION ACTIVITIES Construction of the new main Pump Station plant will include soil excavation to a depth of about 15 feet, temporary shoring, and installation of the tank and fill placement. Gravity sewers, force mains and manholes will require trench excavation to depths ranging from 3 to 13.5 feet deep, temporary shoring and fill placement. Where the sewers cross Dash Point Road, the pipeline will likely be installed using trenchless methods (i.e., pipe jacking). Demolition of septic systems will typically consist of pumping, removal of monitoring ports and manhole lids and any above ground vault features prior to placing and compacting backfill inside the tanks. Demolition of the Pump Station located at the Lower Camp Loop will likely consist of pump retrieval, backfilling and welding the lid back on. Based on our review, we expect that the potential for impacts from this project is highest during construction and mostly likely be a temporary increase in the potential for localized erosion, which can be minimized as discussed below. SLOPE STABILITY, LANDSLIDE HAZARDS AND EROSION Steep Slopes and Landslides In general, the proposed development will be limited the upland area of the park north and south of Dash Point Road and over to the eastern park boundary near 49`I' Street SW and LUD sewer stub. This area is predominately overlain by granular glacial soils that are not typically susceptible to deep-seated sliding. Topographic information shown on the project plans indicate that the sewer alignments as currently planned will not require alteration of slopes inclined greater than 15% grade. Since the existing force main that connects the Beach Pump Station to the end of Sewer line E (See Figure 2) will not be modified and remain in service, negligible alteration of steep areas are planned. Maintenance of safe working conditions including temporary excavation stability is the responsibility of the contractor. Temporary shoring of cuts and trenches should be in accordance with the provisions in Part N of The Washington Administrative Code 2006-044 Sanitary SeNver Collection System -CAR 5 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 (WAC) 296-155. With time and the presence of seepage and/or precipitation, the stability of temporary unsupported cut slopes or trench walls can be significantly reduced and erosion or caving can occur. If conditions conducive to instability are observed, appropriate stabilization measures should be immediately implemented. EROSION For the New Main Pump Station, activities with earth -related impacts include clearing, grubbing, dewatering, earthmoving, and shoring. These activities will temporarily increase the potential for erosion, either by exposing soil to precipitation and runoff or, in the case of dewatering, by concentrating water flow. Uncontrolled storm water runoff during construction could result in sediment laden surface water from erosion of disturbed, stockpiled, or un-vegetated soil areas. For the gravity and force main sewer system, which will be constructed by the open -cut trench method observable construction activities that could potentially have earth -related impacts would take place along the entire alignment including the connection point to existing systems and pump stations. The earth -related impacts would include clearing, grubbing, dewatering, earthmoving and shoring. These activities will locally increase the potential for erosion from runoff or dewatering, Exceptions may include those areas where pipe jacking construction techniques are used such as at roadway undercrossings planned at Dash Point. Pipe jacking will limit surface disturbance to those areas used as launching and receiving pits. Review of the local soils map (Figure 5) and our existing exploration logs indicate that potential risk of erosion will be low to moderate for the sewer system alignment and at the location of the New Main Pump Station. The soils with the highest erosion potential on site will not be disturbed because the existing force main from the Beach Pump Station will not be replaced as part of this project. Clearing and grading activities are envisioned to take place during periods of dry weather to minimize exposure of subgrade soil to erosive processes. With the implementation of the appropriate erosion control BMPs in accordance with City of Federal Way requirements during construction, potential erosion impacts should be negligible. SEISMIC Seismic hazards are defined as areas subject to a severe risk of earthquake damage as a result of seismically -induced ground rupture, liquefaction, ground spreading, and settlement. A seismic event generates ground movements that are horizontal, vertical, or some combination of the two. It can result in permanent ground damage, directly by ground rupture or indirectly by ground shaking. Ground shaking can damage 2006-044 Sanitary Seever Collection System -CAR 6 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 underground structures; trigger slippage in areas susceptible to landslides; or cause liquefaction, ground spreading or settlement. Ground rupture is the general tern used to characterize an area where fault movement results in a distinct offset at the ground surface, or possibly a crack or fissure. Seismic hazards in the form of ground rupture are very unlikely but possible at the project location based upon the site proximity to the Tacoma Fault Zone (Sherrod, et al, 2004). Liquefaction is a phenomenon wherein loose, saturated, granular deposits temporarily lose strength and behave as a liquid in response to moderate to strong earthquake shaking. Portions of an area map developed by the Washington State Department of Natural Resources (Palmer, et al, 2004) showing the liquefaction susceptibility of soils within the project area are shown on Figure 6. According to this map, the project area soils generally, have a very low susceptibility to liquefaction because they consist predominately of dense glacial soils. An area of low to moderate susceptibility is noted in the northwest portion of the park where the existing Beach Pump Station is situated. However, our explorations (HWA, 2006) indicate that the existing pump station is founded on hard glaciolacustrine soils that are not prone to liquefy. GROUNDWATER, SPRINGS AND SEEPS Observations during exploration (HWA, 2006, indicated that groundwater was encountered typically within Vashon advance outwash and sandy layers contained in the Pre -Olympia fine-grained deposits or as minor seepage in recessional outwash or weathered till soils perched over dense low permeability Vashon Till. Review of the proposed Sewer Layout Map (Figure 2), the Geologic Map (figure 4), and our exploration logs (HWA, 2006) indicates that typically minor amounts of perched seepage within upper weathered soils over dense till soils will be the most likely encounter groundwater scenarios encountered during construction. Seepage during construction will be controlled by sumps and pumping. However it should be noted, construction dewatering requirements depend on the time of year, recent rainfall and other factors. In addition, trenches can act as interceptors for runoff and perched groundwater. At this site, these effects will be minimized by using native silty sand soils, which when properly placed and compacted have low permeability. VEGETATION During construction in areas previously unaltered by development, removal of vegetation is unavoidable, however, preservation of shrubs in temporary nursery settings and restoration where practical is recommended for erosion control. The removal of large trees and their relocation should be outlined in the approved landscaping plan. We do not recommend that large trees be re-established, or young trees with the potential to grow 2006-044 Sanitary Sever Collection System -CAR 7 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 large be planted any closer than 5-10 feet to new sewer pipeline trenches to avoid potential damage to utilities from roots or wind throw. LIMITATIONS We have prepared this report for Washington State Parks and Recreation Cormnission for use in permitting the development and construction of this portion of this project. Experience has shown that soil and ground water conditions can vary significantly over small distances. Inconsistent conditions can occur between explorations and may not be detected by a geotechnical study. Sufficient geotechnical monitoring, testing, and consultation should be provided during construction to confirm that the conditions encountered are consistent with those indicated by explorations, to provide recommendations for design changes should conditions revealed during construction differ fiorn those anticipated, and to verify that the geotechnical aspects of construction comply with the contract plans and specifications. o•0 We appreciate this opportunity to be of service. Sincerely, HWA GEOSCIENCES INC. Vq (f G� a dr 61 g Cis]k1gl5S br "0 17 ..0 � �� 0 Bi'kVF.N ELLIOT1' GFiEENE Steven E. Greene, L.E.G. Engineering Geologist, Vice President 2006-044 Sanitary Sewer Collection System -CAR 8 HWA GEOSCIE'NCES INC. January 26, 2007 HWA Project No. 2006-044-300 Attachments: Figure 1. Project Site and Vicinity Map Figure 2. Sewer Layout Map Figure 3 Critical Areas Map Figure 4 Geologic Map Figure 5. Soils Map Figure 6. Liquefaction Susceptibility Map REFERENCES HWA GeoSciences Inc., 2006, Final Geotechnical Repor- Sanitary Sewer Collection System Project, Dash Point State Park, Prepared for WA State Parks & Recreation Commission, June 30, 2006. NCRS, 2007, Soil Conservation Maps for King and Pierce Counties (NCRS on-line web soil survey) Palmer, S.P., W.J. Perkins, and W. P. Grant, 2003, Liquefaction Susceptibility of the Greater Taconia Urban Area, Pierce and King Counties, Washington, Geologic Map GM-5 1, WDNR. Sherrod, B.L., T.M. Brocher, C.S. Weaver, R.C. Buckharn, R.J. Blakely, H.K. Kelsey, A. R. Nelson, and R. Haugerud, 2004, Holocene fault scarps near Tacoma, Washington, USA, in Geology: January 2004; v. 32; no. 1; p 9-12, 4 figures. Troost, K.G., and D.B. Booth, 2006-in review, Geologic Map of the Tacoma North 7.S- Minute Quadrangle, Washington, U.S. Geological Survey, Miscellaneous Field Investigation: Scale 1:24 000. Woodward, D.G., F.A. Packard, N.P. Dion, and S.S. Sumioka, 1995, Occurrence and Quality of Ground Water in Southii,estern King County, Washington, U.S. Geological Survey, Water Resources Investigations Report 92-4098, 89 p., 4 plates. 2006-044 Sanitary Sewer Collection System -CAR 9 HWA GFOSCIENCES INC. I Pmd.d PmmT0P010X01 Iialnrd O.og.p}ie Hol�ea (www.tayoson) PROJECT SITE & VICINITY MAP I FIGURE NO. — CRITICAL AREAS REVIEW PRi0NC7 N0. ��1 HWAGEOSCIENCES INC. SANITARY SEWER COLLECTION SYSTEM PROJECT DASH POINT STATE PARK 2006-044 i I E a� ?i (n Y boa o can 'o fo�a LO'n V 0 C Cn CRITICAL AREAS SHADING LEGEND Map Not To Scale Critical Areas: ® Landslide Hazard Areas Erosion Hazard Area Wetlands (1998 City Survey) Source: City of Federal Way, 2005, Critical Areas Map (online version). Note: southern and easternmost portions of park property not shown. AREAS REVIEW AL ► SANITARY S WERCE COLLECTION SYSTEM PROJECT HWAGEOSCIENCES INC. DASH POINT STATE PARK NORTH FIGURE NO. PROJECT NO 2006-044 GEOLOGIC MAP SYMBOL LEGEND Unit Symbol Unit Desrlatlon Qf Quaternary Fluvial Deposits Qvr Vashon Recessional Outwash Qvi Vashon Ice -Contact Deposits Qvt Vashon Till Qva Vashon Advance Outwash Qpog' Pre -Olympia Glacial (coarse -grained) Qpogr Pre-Olympla Glacial (fine-grained) Source: Map of the Tacoma North 7.5-Minute Quadrangle, Washington, U.S. Geological Survey, Misc. Field Investigation, by Troost, K.G. and Booth, D.B. (in Review) Qvr QV1C Map Not To Scale GEOLOGIC MAP CRITICAL AREAS REVIEW HWAGEOSCIENCES INC. SANITARY SEWER COLLECTION SYSTEM PROJECT DASH POINT STATE PARK FF-nFRA1_ WAY. WASHINGTON NORTH FIGURE NO. PROJECT NO. 2006-044 n SOIL MAP SYMBOL LEGEND Map Not To Scale Unit Symbol Unit Description AgC11C Alderwood gravelly sandy loam, 6 to 15 percent slopes 113 Alderwood gravelly sandy loam, 16 to 30 percent slopes AkF/20F Alderwood and Kitsap soils, 30 to 66 percent slopes 18B Indianola loamy sand, 0 to 6 percent slopes InC118C Indianola loamy sand, 4 to 15 percent slopes Kpc/20C Kitsap silt loam, 8 to 15 percent slopes Sk Seattle Muck NORTH 32B Ragnar sandy loam, 0 to 6 percent slopes Source: NCRS webalte Soil survey of King and Pierce County Area, Washington. SOILS MAP FIGURE NO. CRITICAL AREAS REVIEW � , I HWAGEOSCIENCES INC. SANITARY SEWER COLLECTION SYSTEM PROJECT PROJECT NO. DASH POINT STATE PARK 2006-044 r-, Map Shading Legend F-1 Liquefaction susceptibility: LOW TO MODERATE [71 LicµlVfactinn Suscrptihility: VERY LOW Source: Palmer, S.P., at al, 2003, Liquefaction Susceptibility of the Greater Tacoma Urban Area, Pierce and King Counties, Washington, Geologic Map GM-61, Washington State Department of Natural Resources. Map Not To Scale R s J NORTH LIQUEFACTION SUSCEPTIBILITY MAP FIGURE NO CRITICAL AREAS REVIEW `HWAGEOSCIENCES INC. SANITARY SEWER COLLECTION SYSTEM PROJECT PROJFCTNO. DASH POINT STATE PARK 2006-044 FEDERAL WAY. WASHINGTON CITY OF Federal Way DATE: March 6, 2007 TO: David Lee FROM: Kevin Peterson MEMORANDUM Public Works Department SUBJECT: DASH POINT STATE PARK SEWER IMPROVEMENTS - (06-105996-00-UP) 5700 SW DASH POINT RD Public Works Development Services has the following comments on the proposed project: The applicant shall apply for EN approval, for review of the Temporary Erosion and Sedimentation Control (TESC) measures. The sewer main crossing of SW Dash Point Rd will be reviewed under the EN, in lieu of a City Right of Way Permit. 4ik CITY 10'::ttkWm�� OF Federal Way DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES 33325 81h Avenue South PO Box 9718 Federal Way WA 98063-9718 253-835-7000; Fax 253-835-2609 www_ _ _.cityoffederolWov.c om DECLARATION OF DISTRIBUTION I, °r hereby declare, under penalty of perjury of the laws of the State of Washington, that a: Notice of Land Use Application/Action ❑ Notice of Determination of Significance (DS) and Scoping Notice ❑ Notice of Environmental Determination of Nonsignificance (SEPA, DNS) ❑ Notice of Mitigated Environmental Determination of Nonsignificance (SEPA, MDNS) ❑ Notice of Land Use Application & Anticipated DNS/MDNS ❑ FWCC Interpretation ❑ Other ❑ Land Use Decision Letter ❑ Notice of Public Hearing before the Hearing Examiner ❑ Notice of Planning Commission Public Hearing ❑ Notice of LUTC/CC Public Hearing ❑ Notice of Application for Shoreline Management Permit ❑ Shoreline Management Permit ❑ Adoption of Existing Environmental Document was ❑ mailed ❑ faxed X e-mailed and/or ❑ posted to or at each of the attached addresses on Y� 2007. Project Name 11 S File Number(s) /6e5-f q c r r-j -oG ` Signature r Date G K,\CD Adminisirotion Files\Declaration of Dislribulion.doc/Lost printed 1 /18/2007 4:06:00 PM CITY OF Federal Way NOTICE OF LAND USE APPLICATION Name: Dash Point State Park Sewer Improvements Description: Proposal to replace multiple Large On -Site Sewage Systems (L.O.S.S.) by consolidating and connecting the park's waste water infrastructure to the Lakehaven Utility District. Applicant: Washington State Parks, Leslie Kniffen; 2840 Riverwalk Drive SE, Auburn, WA 98002 Location: 5700 SW Dash Point Rd, Federal Way, WA Staff Contact: Associate Planner David Lee, 253-835-2622 Date Application Received: November 21, 2006 Date of Notice of Application: February 14, 2007 Date Determined Complete: February 8, 2007 Comment Due Date: February 28, 2007 Permits Required by this Application: Process III Approval (File #06-105996-000-00-UP) Relevant Environmental Documents are Available at the Address Below: X Yes No Development Regulations and City Plans to be Used for Project Review and Consistency Known at This Time: The project will be reviewed for consistency with all applicable codes, policies, and regulations, including Federal Way City Code (FWCC) Chapter 18, "Environmental Protection"; FWCC Chapter 19, "Planning and Development"; FWCC Chapter 21, "Surface and Stormwater Management"; FWCC Chapter 22, "Zoning"; Federal Way Comprehensive Plan (FWCP); King County Surface Water Design Manual; and International Building, Fire, and Mechanical Codes. The official project file is available for public review at the Department of Community Development Services (33325 8`" Avenue South, PO Box 9718, Federal Way, WA 98063-9718). Any person may submit written comments on the land use application or the environmental impacts of the proposal to the Director of Community Development Services by 5:00 p.m. on February 28, 2007. Only persons who submit written comments to the Director, or specifically request a copy of the Process III decision, may appeal the Process III decision. Details of appeal procedures for the Process III decision will be included with the written decision. Published in the Federal Way Mirror on February 14, 2007 File P06-105996-000-00-UP Doc. I.D. 39681 CITY OF Federal flay Vicinity Map Puget Sound DOGWOODST "ORPOINT 41+Y > SW 310 ST rQ 312 a � 313 P1 7 -Sr SW 314 PL su Q 7 SW 315 PL SW3ITLN 61* SVV 318 U V7 � J � SW320ST � " f- 319LN � Dash Point State Park Sewer Improvement File #06-105998-SH N Page 1 of 1 Tina Piety - Legal Notice From: Tina Piety To: admin@fedwaymirror.com; dgrigg@soundpublishing.com Date: 2/12/2007 9:32:07 AM Subject: Legal Notice Hello, Please publish the attached legal notice (Dash Point Park Sewer Improvements NOA, 06-105996- 000-00-UP) in Wednesday's (2/14/07) issue. Please furnish an affidavit of publication. Thank you, Tina file:HC:\Documents and Settings\Default\Local Settings\Temp\GW}OOOOI.HTM 2/12/2007 Tina Piety - Re: Legal Notice Page 1 From: Teryl Heller <theller@fedwaymirror.com> To: "Tina Piety"<Tina.Piety@cityoffederalway.com> Date: 2/12/2007 10:16:03 AM Subject: Re: Legal Notice Thanks, Tina. Will publish as requested in the 2/14107 issue. Have a good week. On Feb 12, 2007, at 9:32 AM, Tina Piety wrote: CITY OF FEDERAL WAY NOTICE OF LAND USE APPLICATION Name: Dash Point State Park Sewer Im- provements Description: Proposal to replace multiple Large On -Site Sewage Systems (L.O.S.S.) by consolidating and connecting the park's waste water infrastructure to the Lakehaven Utility District. Applicant: Washington State Parks, Leslie Kniffen; 2840 Riverwalk Drive SE, Auburn. WA 98002 Location: 5700 SW Dash Point Rd, Federal Way, WA Staff Contact: Associate Planner David Lee, 253-835-2622 Date Application Received: November 21, 2006 Date of Notice of Application: Febru- ary 14, 2007 Date Determined Complete: February 8, 2007 Comment Due Date: February 28, 2007 Permits Required by this Application: Pro- cess III Approval (File #06-105996-000-00- UP) Relevant Environmental Documents are Available at the Address Below: X Yes No Development Regulations and City Plans to be Used for Project Review and Con- sistency Known at This Time: The project will be reviewed for consistency with all ap- plicable codes, policies, and regulations, in- cluding Federal Way City Code (FWCC) Chapter 18, "Environmental Protection"; FWCC Chapter 19, "Planning and Develop- ment"; FWCC Chapter 21, "Surface and Stormwater Management"; FWCC Chapter 22, "Zoning"; Federal Way Comprehensive Plan (FWCP); King County Surface Water Design Manual; and International Building. Fire, and Mechanical Codes. The official protect file is available for public review at the department of Community De- veloYment Services (33325 8th Avenue South, PO Box 9718, Federal Way, WA 98063-9718). Any person may submit written comments on the land use application or the environmental impacts of the proposal to the Director of Community Development Servic- es by 5.00 p.m. on February 26, 2007. Only persons who submit written comments to the Director, or specifically request a copy of the Process Ili decision, may appeal the Process Ill decision. Details of appeal procedures for the Process M decision will be included with the written decision. F W M#-1209 Publication date: 02/14/07 1, 991 1 , " M�) Your Community Newspaper Affidavit of Publication Debbie Kaufman, being first duly sworn on oath, deposes and says that she is the Publisher of The Federal Way Mirror, a semi -weekly newspaper. That said newspaper is published in the English language continually as a semi -weekly newspaper in Federal Way, King County, Washington, and is now and during all of said time has been printed in an office maintained at the aforementioned place of publication of said newspaper. That the annexed is a true copy of a legal advertisement placed by City of Federal Way L-1209 as it was published in regular issues (and not in supplemental form) of said newspaper once each week for a period of one consecutive week(s), commencing on the 14th day of February. 2007 , and ending on the 14th day of February, 2007, both dates inclusive, and that such newspaper was regularly distributed to its readers during all of said period. That the full amount of the fee charged for the foregoing publication is the sum of 91.58 which amount has been paid in full, or billed at the legal rate according to RCW 65.16.090 Subscribed to and sworn before me this 20th day of February, 2007. Notary Public in and for the State of Washington, Residing at Federal Way j1y1111t 1111tJ111 17 w= -s c�Nt1TARr4�r'�. s s Ft1,1+C ,0' N�L .t PQ�A •11011111111t111L►1� 1414 SO. 324TH STREET, SUITE B210, FEDERAL WAY, WA 98003 ■ 253-925-5565 8 FAX: 253-925-5750 DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES 33325 8`h Avenue Soutb PO Box 9718 CITY OF Federal Wa MAR Way 98063- 9718 �0 � Hal 253-835-2607; Faxax 253-835-26092609 www. ci tvoffederahyAy_com ,G'My OF �EDKRAL WAY RV1LDNO D PT. RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. "Please note: Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Mailed resubmittals that do not include this form or that do not contain the correct number of copies will be returned or discarded. You are encouraged to submitall items in person and to contact the Customer Service Counter prior to submitting if you are not sure about the number of copies required. ** Project Number: V - 1 0 Project Name: � � W Project Address `3 76 0 Project Contact: �. J I Phone: ? RESUBMITTED ITEMS: # of Copies ** Detailed Description of Item ** Always submit the same number of copies as required for your initial application.** r Resubmittal Requested by: Letter Dated: (,Stafi Member) T.l OFFICE USE ONL Y RESUB A- Distribution Date:- By.• Dept/Div Name # lbescription BjAding -A-Planning1 PW Fire Other Bulletin #129 — August 8, 2006 Page 1 of 1 k:\Handouts\Resubmittal Information vASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT SERVICE CENTER 2840 RIVERWALK DRIVE SOUTHEAST AUBURN, WASHINGTON 98002 PHONE: (253) 931-3904 FAX: (253) 931-3921 LETTER OF TRANSMITT. TO: I City of Federal Way, Washington I DATE: 1 3/6/2007 ATTN: I Mr. David Lee, Associate Planner FROM: Virginia Harris, Civil Engineer RE: Dash Point State Park Sewer Improvement Project, Site Improvement Plan Sheets C-1 to C-7 and G-4 COPIES DESCRIPTION 1 each Site Improvement Plan Sheets C-1 to C-7 and G-4 COMMENT Please find attached plan sheets C-1 through C-7 according to your request (e-mail of 3/5/07 from David Lee, City of Federal Way to John Zinza, Washington State Parks). Plan sheet G-4 listing the tree schedule is also included. RECEIVED BY: TITLE/PHONE : SIGNATURE: cc: CITY OF 10i::t�� Federal Way 41k DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES �A■ 33325 8`h Avenue South RE B�viI&P a] Way WA9$ 63-97I8 i APR VQ 2 - 35-2607; Fax 253-835-2609 www.cityoffederalwgy.com CITY OF FEDERAL! WAY BUILDING DER. RESUBMITTAL INFORMATIOII This completed form MUST accompany all resubmittals. **Please note: Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Mailed resubmittals that do not include this form or that do not contain the correct number of copies will be returned or discarded. You are encouraged to submit all items in person and to contact the Customer Service Counter prior to submitting if you are not sure about the number of copies required. ** Project Number: Project Name:S)"51, , i ~ L • ? �. Project Address: Project Contact: _ C _ Phone: RESUBMITTED ITEMS: eS LAb # of Copies ** ►-e j Detailed Description of Item ** Always submit the same number of copies as required for your initial application.** Y Resubmittal Requested by: L Letter Dated: ll� er OFFICE USE Oft Y RESUB #.• Distribution Date.- Dept/Div Name # Description Wilding 'Plannin PW Fire Other f I Bulletin #129 — August 8, 2006 Page l of 1 k:\Handouts\Resubmittal Information RESUBMITTED APR 2 7 2007 DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES 33325 8 h Avenue South CITY OF .�Wa"�j F FEDERAL WAY P9 Box 9718 Federal 9718 ILDING DEPT. Federal Way Fax 98835-2609 253-835-2607;Fax 253-835-2609 www,cit offederaiwa ,com RESUBMITTAL INFORMATION This completed form MUST accompany all resubmittals. **Please note: Additional or revised plans or documents for an active project will not be accepted unless accompanied by this completed form. Mailed resubmiltals that do not include this form or that do not contain the correct number of copies will be returned or discarded. You are encouraged to submitall items in person and to contact the Customer Service Counter prior to submitting ifyou are not sure about the number of copies required. ** Project Number: Project Name: p0-tyi+ 6JCAy Par _G - 0 ® - U ,-Dd%'vvt ex Project Address: 700 S W bas� Ro"-d Project Contact: Le- S ky, (-(G ri Phone: '2S 3 �8 8 ,_ a,5-6 RESUBMITTED ITEMS: # of Copies ** Detailed Description of Item s 4 n ks Apc;1 2co-7 .y s._sw suu `2- P Y U U Zma ci C 4 (IQ — Always submit the same number of copies as required for your initial application." Resubmittal Requested by : C -C d L-. e e Letter Dated: 3 / 2 2/ ® 7 (Staffem er ,f OFFICE USE ONL RESUB #.- `- t Distribution Date:�R� By.- Dept/Div Name # Description -Building Planning Vl Z o GS .4S PW Fire Other Bulletin #129 —August 8, 2006 Page 1 of 1 k:\Handouts\Resubmittal Information CITY OF FEDERAL WAY DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL RESUBMITTAL DATE: May 1, 2007 TO: Kevin Peterson, Development Services Scott Sproul, Assistant Building Official Brian Asbury, Lakehaven Utility District Chris Ingham, Federal Way Fire Department FROM: David Lee FILE NUMBER(S): 06-105996-00-UP RELATED FILE NOS.: None PROJECT NAME: DASH POINT STATE PARK SEWER IMPROVEMENTS PROJECT ADDRESS: 5700 SW DASH POINT RD ZONING DISTRICT: SE PROJECT DESCRIPTION: Replace multiple loss systems by consolidating and connecting to the Lakehaven Utility District LAND USE PERMITS: Preliminary Plat, SEPA PROJECT CONTACT: WASHINGTON STATE PARKS DEPT LESLIE KNIFFEN 2840 RIVERWALK DR SE 2532882566 (Primary) MATERIALS SUBMITTED: Reduced revised plans Ati�k 9'l'.17 f' Q.n Rex Derr Director s STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT OFFICE 2840 Riverwalk Drive SE • Auburn, Washington 98002 • Phone: (253) 931-3904 • Fax: (253) 931-3921 April 4, 2007 David Lee City of Federal Way 33325 8th Avenue South Mailing Address: PO Box 9718 Federal Way, Washington 98063-9718 RE: Response to City of Federal Way "Additional Information Requested" of March 22, 2007, File #06-105996-00-UP Dash Point State Park Sewer Improvements Dear Mr. Lee Thank you for your continuing review of our sanitary sewerage project. John Zinza P.E., the Project Engineer, and I have prepared the following response to your letter of March 22, 2007. 1 believe this addresses most of the points in your letter, and we soon will be able to address the remainder. In light of our conversation of March 28, 2007, we further believe we are still engaged in a Process III and are continuing within the timeframe of that review process. Response: Site Plan: See attached Memo from John Zinza, Project Engineer. 2. Land Use Process/Critical Areas See attached Memo from John Zinza, Project Engineer. 3. Concerning the "Habitat Technologies" report: We will assess the environmental impacts as you request. We anticipate completion within 2 weeks. We would appreciate it if you would please continue the review process of other elements of our project until we submit to you this new information. 4. Concerning SEPA: State Parks is the SEPA Lead agency for this project. There is an identified bald eagle nest site (identifier 1268) within the park. No Eagle Management Plan has been done to date. The clearing of the utility corridor and the RESUBMITTED APR 0 9 2007 BOF FEDERAL WAY UILDING DEPT. m 1V harvest of more than 5 MBD within a State Park and the presence of the bald eagle requires a Class IV - Special Forest Practices Application (FPA). The FPA requires an Eagle Management Plan or waiver of it from the Washington Department of Fish and Wildlife. We have been in discussions with the Washington Department of Natural Resources and are preparing the FPA. We will work with the Washington Department of Fish and Wildlife to determine whether an eagle management plan is appropriate in this project and comply with their judgment. Our closest approach to the eagle nest is approximately 700 LF. This nesting eagle pair appears to have habituated to the presence of human activity in the park as evidenced by their continued use of the nest site for many years despite maintenance activities and heavy spring and summer vehicle and pedestrian use of the park. Further, there is continuous occupancy of residences with associated vehicular traffic approximately 700 feet to the southeast of the nest as well. Great blue herons and green herons do not nest in the park. Chris Anderson, WDFW's Heron Biologist, confirms by the accompanying email that herons do not nest in the park, and they have received no reports past or present that they do. The closest active rookery is in Redondo, Washington. Chris Anderson further states no restrictions are necessary as regards herons on this project 5. Development Services See attached Memo from John Zinza, Project Engineer. State Parks wishes a meeting at your first available opportunity in order to move this project forward. We request your presence, that of Mr. Kevin Petersen and Mr. Greg Fewins. It is critical that we clarify all permit issues and timelines both land use and building. Sincerely. Leslie C. Kniffen Environmental Specialist 4 Enclosures: 1 cc: Greg Fewins, Deputy Director of Community Development Services, City of Federal Way Kevin Peterson, Development Services, City of Federal Way Daniel Farber, Park Development Region Manager, WSPRC Puget Sound Region John Zinza, P.E., Project Engineer Washington State Parks and Recreation Commission Puget Sound Parks Development Service Center 2840 Riverwalk Drive Southeast Auburn, Washington 98002 Phone: (253) 931-3904 Fax: (253) 931-3921 Memo To: Les Kniffen, Environmental Specialist, WA State Parks, Puget Sound Region From: John Zinza, P.E., Environmental Engineer, WA State Parks, Puget Sound Region cc: Arnie Larsen, P.E., Engineering Manager, WA State Parks, Puget Sound Region Daniel Farber, Parks Development Region Manager, WA State Parks, Puget Sound Region Date: March 30, 2007 Re: Project Engineer's review of City of Federal Way March 22, 2007 Letter to Leslie Kniffen, Washington State Parks, City of Federal Way Process III Review Application, File #06-105996-00-UP, Dash Point State Parks Sewer Improvements, 5700 SW Dash Point Rd Listed below are my comments compiled from my review of the City of Federal Way March 22, 2006, letter (CFW-22MAR2007-Letter). The CFW-22MAR2007-Letter requested additional information, which I am presenting below along with my comments to referenced portions of the CFW-22MAR2007-Letter. I recommend that we meet with the City of Federal Way in the immediate future, with the goal of clarifying and/or resolving any remaining issues. Additionally, a meeting will allow us to ensure that we are on track with the City of Federal Way permit process, and understand how other components such as the Technical Information Report and possibly a separate building permit fit into the process. I discuss this concern about the permit process under item 3, below. Response to Additional Information Requested 1. Reference, Site Plan (page 1) a. First Bullet: The "+" referred to likely is the stationing tick along the alignment as shown on the Drawings ESC-3 through ESC-15. Please validate that the "+" is the stationing tick mark. We will address the "+" concern to avoid confusion. b. Second Bullet: The proposed sanitary sewer lines are shown on sheets SS-1 through SS-13. The sewer lines will be added to the ESC sheets. c. Third Bullet: The dirt trail is an existing trail, and will be indicated as such. 2. Reference, Land Use Process/Critical Areas (page 1): Memo: To L. Kniffen, WA State Parks, March 30, 2007 RE: Additional Information Requested, CFW-22MAR2007-Letter Page 2 of 5 a. Initial Paragraph, Comment Regarding Normal Maintenance: During the June 13, 2006, meeting with the City of Federal Way, you and I discussed with (Mr. Greg Fewins, Deputy Director of Community Development Services; Mr. Jim Harris, Senior Planner; Mr. William Appleton, P.E., Development Services Manager; and Ms. Kathleen Messinger, Engineering Technician.) separating the work at the beach pump station from the remainder of the project. The beach pump station work would be considered "normal maintenance" per FWCC Section 22-1248, and allow Sate Parks to be exempt from actions such the Shoreline Management process. The rest of the new facilities were outside of the shoreline jurisdiction. It is my interpretation that all the work at the beach comfort station is "normal maintenance", since it is related to replacement of facilities to meet current codes and accepted engineering safety practices. It may be helpful to review the work at this location, which consists of replacing the following: pumps within the existing pump chamber; pump station valves; and electrical components. The replacement valves and electrical components are in a new location outside the existing pump chamber to mitigate confined space and other electrical code issues. The replacement electrical components will be relocated within the existing beach comfort station, accessed through a new door. The new concrete pad is necessary for both electrical code and safety issues. Drawing BPS-1 shows a grassy area to the left of the new door. This grassy area will be replaced with concrete to safely facilitate maintenance. The new valve location will be within the new pad. b. Initial Paragraph, last sentence, comment regarding essential public facilities (page 2): My understanding is that the City of Federal Way has acknowledged that this project is an "essential public facility", based on your Wednesday, March 28, 2007, 2:00 PM phone conversation with City of Federal Way Staff (Mr. Greg Fewins, Deputy Director of Community Development Services, and Mr. David Lee, Associate Planner). As you know, we agree that the project is an "essential public facility" based on the State of Washington, Office of Financial Management's decision for an "essential public facility". The OFM is required to maintain an "essential public facilities list' per RCW 36.70A.200 (4). In the 2007 — 2017 Capital Budget Instructions, issued by OFM, the following statement regarding "Coordination with regional and local governments on projects siting" is made: OFM is required under the Growth Management Act to maintain an Essential State Public Facilities list to inform regional and local governments of the construction or siting of facilities across the state. All state-owned projects identified in the Govemo►'s Ten - Year Capital Plan are essential public facilities. Local govemments cannot preclude the siting of essential state public facilities. For its part, the state must comply with local planning ordinances. While not all capital projects are sited at the Memo: To L. Kniffen, WA State Parks, March 30, 2007 RE: Additional Information Requested, CFW-22MAR2007-Letter Page 3 of 5 time the budget is considered, it is important, whenever possible, to identify the preferred area or optional sites for locating each facility. The Dash Point State Park sewer project is in the Governor's Ten -Year Capital Plan and is thus an "essential public facility". c. Initial Paragraph, last sentence, comment regarding essential public facilities, continued (page 2): As an essential public facility, FWCC Section 22-1359(c), State Parks must demonstrate that incursion into a wetland or stream buffer is necessary because "no feasible or alternative location exists... based on an analysis of technology and system efficiency." The following analysis responds to that criteria in every instance in which it occurs in the project: Traverse of Wetland Buffer Instance 1 (Refer to Drawing ESC-10). This traverse of the buffer is necessary to construct the new main pump station with access road. The location was selected based on topographic constraints which restricted its functional use to a small natural low point, necessary to construct a gravity system serving the entire park. The gravel access road follows the new sewer alignment. The topography to the north of the site, outside the buffer, does not allow for relocating the gravity pipe main without major excavation activities. The new pump station location was also sited to mitigate odor and noise conflicts with campers. Parks has determined from past experience that improperly located sewage facilities conflicts with park's mission to provide a rewarding camping experience. Traverse of Wetland Buffer Instance 2 (Refer to Drawing ESC-11 through ESC -13). The location of these lines minimally intrudes in the wetland buffer on an alignment that connects existing comfort stations and beneficially provides service options for future utility hookups to campsites in the upper loops. The current wastewater design, which was sited based on topographical constraints, allows for future RV hookups in the upper camp loops through a conventional gravity collection system. Relocation of the alignment would result in a design with extensively deep excavations and require the installation of additional pump station(s) necessary to provide the future utility service. A relocated alignment would result in a system that would require higher operation and maintenance, and have a higher opportunity for environmental impacts. iii. Traverse of Wetland Buffer Instance 3 (Refer to Drawing ESC-14). The traverse of the wetland at this location is necessary for parks to connect to the proposed sanitary sewer force main at the Lakehaven Utility District (LUD) connection location (Refer to Drawing ESC1 & ESC 15). During the design process, State Parks did consider installing the sewer main in the SW 320t' Street ROW, which would require asphalt restoration and possibly present separation issues with existing water lines. However due to issues related to franchise agreements, LUD advised (LUD email dated June 9, 2006) State Parks that the preferred option for the alignment was "keeping the new pressure line from your Memo: To L. Kniffen, WA State Parks, March 30, 2007 RE: Additional Information Requested, CFW-22MAR2007-Letter Page 4 of 5 main pump station to your eastern property boundary entirely within/on WSP&RC property". The LUD advice was based on discussions with City of Federal Way public works staff and management, specifically in regards to avoiding a franchise agreement with the City of Federal Way and avoiding a maintenance agreement with LUD. The situation regarding franchise agreements is different from the proposed perpendicular sewer line crossing of Dash Point Road, where the City of Federal Way did grant a franchise agreement to State Parks, since there were no other viable options for State Parks. d. First Bullet, First paragraph (page 2): 1 assume that this paragraph is no longer in force in light of the acknowledgement that the project is an essential public facility. e. First Bullet, First paragraph, 2"d to last sentence (page 2): The statement that "...the City would not advise or support installation of a sewer line through a wetland unless...", is not relevant from my perspective, since State Parks is not constructing within a wetland. If the City had something else in mind, I ask them to clarify that. f. First Bullet, Second paragraph (page 2): Please provide clarification regarding this paragraph in light of the acknowledgement that the project is an essential public facility. Specifically, is a redesign necessary? g. First Bullet, Third paragraph (page 2): Please provide clarification regarding the status of our permit fees, in light of the acknowledgement that the project is an essential public facility. h. Second Bullet (page 2): Les please provide a response to this text. i. Third Bullet (page 2): Les please provide a response to this text. 3. Reference, Development Services (page 3): a. General: State Parks requires clarification from the City of Federal Way on the permit process, specifically: i. Is there a separate building permit, and if so how and when do we apply for it in relation to the current process we are going through? How long does the building permit process take? ii. There was no mention of the Technical Information Report (TIR), which we have prepared. How does the TIR fit into the process, and what time frames are associated with approving the TIR. iii. Is there any other component of the permit process that we are unaware of? b. First Bullet: State Parks has completed a Technical Information Report, and created TESC measures as shown in the ESC sheets. I understand that we need approval prior to construction. Can the City of Federal Way provide State Parks with the process to gain approval and identify any deliverables necessary by State Parks? c. Second Bullet: State Parks has a franchise agreement for the sewer main crossing SW Dash Point Road. Can the City of Federal Way provide State Parks with the Memo: To L. Kniffen, WA State Parks, March 30, 2007 RE: Additional Information Requested, CFW-22MAR2007-Letter Page 5 of 5 process to review the crossing and identify any deliverables necessary by State Parks? d. Third Bullet: State Parks will submit the review fee as presented or as modified based on further review of the plans. 4. Reference, CLOSING (page 3): State Parks will provide the necessary document copies as needed by the City of Federal Way. Can the City of Federal Way provide State Parks with a new status of where the project is in the review process? We are eager to complete this important public project and hope to be in construction soon. We appreciate consideration of this matter as a high importance level. DASH POINT STATE PARK SANITARY SEWER COLLECTIN SYSTEM PROJECT MEETING w/ City of Federal Way — April 16, 2007 6) Wetland Impact Addendum Letter: Parks to provide an addendum letter describing project impact to wetland and wetland buffer. The HWA information did not provide impact information. Mr. Lee specifically asked that the addendum evaluate potential impacts to flora/fauna listed in our SEPA document. 7) Land Use Review/Other Reviews: The Process III is a land use review. There are other City of Federal Way Reviews. Final approval of these reviews is dependant on final approval of the Process III. a. Building Permit: Allow for 6-weeks. Can run concurrently. Needs stamped plans for building. b. Engineering Review: Call Kevin Peterson for details. 8) Lakehaven Utility District: Contact Lakehaven directly for their permit. 9) Process III Status: The clock is stopped. Mr. Lee expects to restart review, in about a week and a half. Mr. Lee needs a new plan set which addresses the information requested and an addendum letter which discusses wetland impacts. A positive review will result in the clock restarting for the Process 111. 10) Process III Waiver of Final Comment Period: Since there were no comments during the initial thirty day comment period, State Parks can request the City of Federal Way to waive rights to a two -week comment period. 11)Noise Ordinance: Parks was provided a copy of City of Federal Way noise ordinance. 12)Franchise Permit: State Parks commented that the process for a franchise for the proposed crossing of Dash Point Road has been completed. 7 Rex Derr = x Director �f 7 STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT OFFICE 2840 Rivertvalk Drive SE • Auburn, Washington 98.002 • Phone: (253) 931-3904 • Fax: (253) 931-3921 January 30, 2007 David Lee, Associate Planner City of Federal Way 33325 8"' Avenue South P.O. Box 9718 Federal Way, WA 98063-9718 RE: Items Identified As Incomplete, City of Federal Way Process III Review Application, File#06-105996-00-UP/06-105998-00-SH, Dash Point State Parks Sewer Improvements, 5700 SW Dash Point Rd Dear Mr. Lee: Washington State Parks received the City of Federal Way December 27, 2006, letter (CFW- 27DEC2006-Letter), which identified the submitted project application as incomplete. The CFW-27DEC2006-Letter provides a list of items that must be provided as for the application to be considered as complete. This response letter provides information to address the items that contributed to the incomplete determination. Item 1. Project Narrative: Please find attached a revised project narrative that addresses: the depth and approximate amount of cut and fill of all trenching; details of what is involved in upgrading an existing pump station; and clearly identify which project components are "new" and which are portions are considered "replacement/maintenance" (identified as items I. b., c., and e., in your letter). The project narrative will not present the term "Multiple Loss System" and will present a limited discussion of project phases, based on the discussions immediately below. "Multiple Loss Systems", (identified as item l.a. in your letter): The submitted application uses the term "Multiple LOSS System", however it did not define the term. The term "LOSS" is an acronym for "Large On -Site Sewage Systems" as defined in WAC 246-272B, and are septic systems with a capacity of over 3,500 gallons per day. LOSS are regulated by Washington State Department of Health. Dash Point State Park currently has 8 active septic systems, thus the term City of Federal Way, David Lee RE: Items Identi fied As Incomplete, City of Federal Way Process III Review Application January 30, 2007 Page 2 of 3 'Multiple". However, not all the existingT septic systems are LOSS, and it would be more accurate to describe the park a containing --eight existing onsite septic systems". The proposed collection and coriveyance system will allow State Parks to transition away from and abandon these existing onsite septic systems. "Project Phases".: (identified as item l.d. in your letter): The Dash Point State Park Advanced Sewer Systcin Plan & Report June 2003 DR:4FT, , describes phases to the project, Phase 1 — 3, and comments on Future Phases (pages 23 and 24). The presentation of the phases in the report is based on the consultants understanding of budgeting constraints and how the project was perceived by Washington State Parks in 2003. Since the preparation of this report, Washington State Parks has prepared a design that serves the entire park and in general addresses the goals of the three phases as one project. Future sewer work at Dash Point State Park, may include replacing vault toilets at Picnic Point and the Group Camp Loop.with facilities connected to the new sewer system. Future sewer work may also include providing recreational vehicle sewer hookups at individual camp sites in the camp loops. This future work is funding dependant, and has not been authorized at this time. During the project design it was determined that the existing force main from the beach comfort station was in serviceable conditions. Therefore it was decided to intercept the existing forcemain and connect it to the proposed system, rather than upgrade it_ Replacing this force main was previously identified as part of the phase construction plan_ Item 2. Wetland Report: The ordinary high water mark (OHWM) for both banks of the "Major Stream", and the 100-foot major stream setback from the OHWM, have been delineated. Please see attached plan sheets. Item 3. Geotechnical Report: The attached HWA Geosciences January 26, 2007, letter, titled: Critical Areas Review, Sanitary Sewer Collection System Project, Dash Point State Park, Federal Way, Washington, provides the information identified in the CFW-27DEC2006-Letter specific to "Critical Areas". Item 4. Dash Point State Park Advanced Sewer System Plan & Repo . There will be no effort to finalize the draft Dash Point State Park Advanced Sewer System Plan & Report June 2003, and thus it is the most current report available. Please find attached eight (8) copies of the revised required plans, four (4) copies of the project narrative, and four (4) copies of the HWA Geosciences January 26, 2007, technical letter. No reports were revised. We look forward to receiving notification regarding completeness within 14 days of receiving this requested information. 2 City of Federal Way, David T RE: Items Identified As Incoi,q)[ete, City of Federal Way Process III lccview Application January 30, 2007 Page 3 of 3 Additionally, at this time it would be beneficial to provide you a project update. State Parks is progressing rapidly toward the completion of a finalized plan set as well as completion of the Technical Information Report. We anticipated completion of these documents around mid - February. Sincerely, John 2za' E Environmental Engineer WA State Parks, Puget Sound Parks Development JMZ Attachments: Revised Project Narrative (4 copies) HWA Geosciences, Inc_, January 26, 2007, Technical Letter (4 copies) Revised required plans (8 copies) cc: Les Kniffen, WA State Parks, Environmental Specialist Attachment to State Parks January 30, 2007, response letter to the City of Federal Way (Ref: File#06-105996-00-UP/06-105998-00-SH) Prepared by John Zinza, PE, Washington State Parks. Project: Sanitary Sewer Collection System Location: Dash Point State Park, 5700 SW Dash Point Road, Federal Way, WA PROJECT NARRATIVE I)-er City of Federal Dec. 27, 2006 L This project transitions Dash Point State Park from 8 onsite septic systems/drainfields to a collection conveyance system with discharge to an existing Lakehaven Utility District (LUD) Sewer stub, located near the east end of the park. Wastewater treatment will occur offsite at the LUD Lakota Wastewater Treatment Plant. This project consists of a new collection and conveyance system and replacement/maintenance to existing wastewater facilities. New wastewater collection and convevance comi)onents in 1) Main Pump Station: a new main pump station consisting of wet well, valve vault, electrical transformer, precast concrete electrical control building, and new gravel access road. 2) Sanitary Sewer Force Main: a new 4-inch diameter HDPE, sanitary sewer force main, approximately 4,110 lineal feet (LF), will be connected to a new discharge manhole. This new force main follows a common alignment with a portion of the gravity system (shared trench) for approximately 1,600 LF, and then proceeds in its own alignment to a connection with a discharge manhole in the eastern portion of the park. Access to the new terminal manhole will be either through an existing Lakehaven Utility District easement at the Dash Point Townhouses or by via parks property. 3) Gravity Sanitary Sewer Main Lines and Manholes: the installation of approximately 5,040 LF of new 8-inch and 6-inch PVC main line with 2 ductile iron drop connects, with 35 manholes. Trenchless construction (bore and jack) will be used to install about 80 LF of gravity sewer under Dash Point Road, approximately 450 west of the entrance. 4) New Electrical Feed: A new electrical feed will be installed paralleling the new gravity sewer main from the north side of Dash Point Road to the new main pump station. The electrical feed will be installed by trenchless methods where it crosses Dash Point Road. 5) Gravity Sanitary Side Sewer: The installation of approximately 354 LF of new 4- and 6-inch PVC side sewer serving twelve park facilities. Dash Point SP, Sanitary Sewer Collection System Project Narrative Prepared Jan. 30, 2007 Page 2 of 3 5) Demolition: Abandonment of eight septic systems, a pump station in the lower camp loop, targeted demolition at the beach pump station, and miscellaneous pavement and concrete removal and restoration. Replacement/maintenance portions of the project: 1) Modifications to Beach Pump Station: work on the beach pump station consists of replacing existing pumps with an Orenco Universal biotube pump vault, replacing the existing valves with new valves located in new header discharge vault, and replacement of electrical controls from the existing drywell to inside the adjacent comfort station with access by a new external door, and miscellaneous work necessary to update this pump station. 2) Reuse of Existing Beach sanitary sewer force main: Approximately 1,450 LF of 1,671 LF of the existing beach pump station force main will be reused at part of this project. It will be connected to the replacement components at the Beach Pump Station at one end, while the discharge end will be intercepted and connected at a new discharge manhole. The remainder of the force main will be abandoned along with the demolition of the drainfield, to which it was connected The d_enths and approximate amount of cut and fill of all trenching anticipated for this project are as follows: 1) Main Pump Station: Excavation depth for the new wet well is expected to be about 15 feet. The new gravel access road will result in about 600 cubic yards (CY) of cutting and about 250 CY of fill. 2) Sanitary Sewer Force Main: new force main pipe depths will range from about 3 feet to about 12 feet in the shared trench. Where the force main is separate from the gravity sewer pipe, trench depths will range from a minimal cover of 3 feet, to occasional depths of about 13.5 feet, which are necessary to maintain positive slope. For the force main only trench, approximately 970 CY of cuts and 615 CY of native fill and 310 CY of bedding are anticipated to construct the force main only part of the system. 3) Gravity Sanitary Sewer Main Lines: Pipe depths and manhole depths vary and range from about 5.5 feet to about 13.5 feet. Approximately 5,050 CY of cuts, 2,615 CY of native fill, 1,315 CY of imported gravel fill and 620 CY of imported bedding are anticipated to construct the gravity sewer main, and the section of the system where the gravity and force main pipe share a trench. 4) Sanitary Side Sewer: Depths of side sewer necessary to connect the park facilities ranges from approximately 2.5 feet to 9 feet. Approximately 95 CY of Dash Point SP, Sanita,, Sewer Collection System Project Narrative Prepared Jan. 30, 2007 Page 3 of 3 cuts and 58 CY of native fill and 32 CY of bedding are anticipated to construct the side sewers. Total Cuts and fills for trenching associated with this project area as follows: Approximately 6,700 CY of cuts, 3,300 CY of native fill, 1,373 CY of imported gravel fill, and 960 CY of imported pipe bedding. Future Sanitary Sewer Collection System Work: Future sewer work at Dash Point State Park, may include replacing vault toilets at Picnic Point and the Group Camp Loop with facilities connected to the new sewer system. This future sewer work may also include providing recreational vehicle sewer hookups at individual camp sites in the camp loops. This future work is extremely conceptual at this point, funding dependant, and has not been authorized at this time. 161 I &T HWA GEOSCIENCES INC. I January 26, 2007 HWA Project No. 2006-044-300 Contract No. AE 507-045 Puget Sound Region Parks Development Service Center Washington State Parks and Recreation Commission 2840 Riverwalk Drive SE Auburn, Washington 98002 Attention: Mr. John Zinza, P.E. Subject: CRITICAL AREAS REVIEW SANITARY SEWER COLLECTION SYSTEM PROJECT Dash Point State Park Federal Way, Washington Dear Mr. Zinza, This report summarizes the results of our review of site soils and geologic hazard conditions in support of the Washington State Parks and Recreation Commissions application for a permit from the City of Federal Way (COFW) for the construction of the Salutary Sewer Collection System Project at Dash Point State Park, Federal Way, Washington located as shown on Figure 1. A scope of work and cost estimate for this supplemental geologic review was submitted to State Parks on January 6th, 2007. Verbal authorization to proceed was given by John Zinza on the 22nd of January, 2007. Our services were performed in general accordance with the scope of work. SITE AND PROJECT DESCRIPTION SITE DESCRIPTION Dash Point State Park is located on the shore of Puget Sound approximately two miles north of Commencement Bay, within the City limits of Federal Way, Washington. Dash Point Road (SR 509) divides the park into a northern day use area and a southern campground area. The proposed sewer lines will be located on both sides of the park and would cross under SR 509. The topography of the park rises from sea level at the beach pump station to 19730 - 64th Avenue W about 210 feet above sea level at the northern sewer force main discharge suite 200 Lyninaood, NVA 98036.5957 Tel: 425.774.010E Fax: 425.774.2714 www.hwageosciences.coin January 26, 2007 HWA Project No. 2006-044-300 manhole on the northeastern part of the project site. Further south and southeast, the elevation drops to about 145 feet at the proposed primary pump station in the southwest, and fii Cher to the east, the elevations rise to about 260 feet at the connection point of the proposed primary force main to the existing Lakehaven Utility District sewer. The lines pass through moderately to densely forested areas. PROPOSED IMPROVEMENTS The project transitions the park from eight septic systems/drainfields to a collection conveyance system with a discharge to an existing Lakehaven Utility District (LUD) sewer stub. The general layout of the proposed sanitary sewer collection system is shown on the Sewer Layout Map, Figure 2. Wastewater treatment will occur at the LUD Lakota Treatment Plant. The proposed new collection and conveyance system includes: l ) Pump Stations: a new main pump station and gravel access road, in addition to repairs to existing beach pump station; 2) Sanitary sewer Force Main: a new sanitary sewer force main (4-inch HDPE) approximately 4,110 LF in length, and reusing approximately 1,450 LF of 1,671 LF of the existing beach purnp station force main which will be connected to a new discharge manhole; 3) Gravity Sanitary Sewer Main lines and manholes: approximately 5,040 LF of new 8-inch and 6-inch PVC main line with 2-inch ductile iron drop connects, with about 35 manholes; 4) Gravity Sanitary Side Sewer: the installation of approximately 354 LF of new 4-and 6-inch PVC side sewer serving twelve park facilities; 5) Demolition: Abandonment of eight septic systems, a pump station in the lower camp loop, targeted demolition at the beach pump station, and miscellaneous pavement and concrete removal and restoration. PURPOSE The purpose of this critical areas review was to summarize the geologic and soils and ground water conditions within the project site, and describe how the proposed development will impact each of the following (per Federal Way City Code Article XIV, Section 22-1286(a) 1) on the project site and nearby property: a) Slope stability, landslide hazard and erosion, b) Seismic hazards, c) Groundwater, d) Seeps, springs and other staface nvatets, 2M-044 Sanitary Sewer Collection Systeni-CAR 2 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 e) Existing vegetation. Our work included review of existing geologic and geotechnical data developed previously by; HWA (2006) during our geotechnical investigation conducted for the design of the improvements, by the United States Geological Survey, Washington State Department of Natural Resources, the USDA -Natural Resources Conservation Service, and the City of Federal Way's Critical Areas Map. An excerpt of the City of Federal Way's Critical Areas Map that includes the project site is depicted on Figure 3. As shown on Figure 3, portions of the project site are considered potential landslide and erosion hazards areas. GENERAL GEOLOGY Geological information for the project area was obtained from the Geologic Map of the Tacoma North 7. S-Minute Quadrangle, Washington, U.S. Geological Surrey, Miscellaneous Field Investigation, Scale 1:24 000 by Troost K.G. and Booth, D.B. (in review). The project site is mainly underlain by Vashon glacial till deposits and advance outwash sediments. The glacial till deposits are comprised of a poorly sorted, non - stratified mixture of clay, silt, sand, gravel, and cobbles with scattered boulders, and were deposited by the Puget Lobe of the Cordilleran Ice Sheet, during the Vashon Stade of the Fraser Glaciation. Glacial till soils are typically very dense, resulting from the weight of the glacial ice hundreds of meters thick, which over -rode the till. The geologic mapping further shows that the northern and western part of the park are underlain by advance outwash deposits consisting of light gray, stratified, compact sand and gravel, and the eastern part of the park is underlain by Vashon recessional outwash sediments comprised of light brown, loosely compacted sand and gravel. Older, Pre -Olympia glacial sediments are exposed in the ravine of the unnamed creek situated along the western park boundary and are comprised of dense sand and gravel and hard silts and clays. A portion of the USGS map discussed above covering the project area is depicted on Figure 4. GROUND WATER Regionally, groundwater is expected at depth within the Vashon advance outwash and the older Pre -Olympia coarse -grained deposits (Woodward, D.G., et al, 1995). Locally, depth to groundwater varies with location, geologic unit encountered and season. During exploration, as noted on the boring and test pit logs (HWA, 2006), groundwater was encountered typically within Vashon advance outwash and sandy layers contained in the Pre -Olympia fine-grained deposits or as minor seepage in recessional outwash or weathered till soils perched over dense low permeability Vashon Till. 2006-044 Sanitary Sewer Collection System -CAR 3 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 SOILS According to the Soil Conservation Maps for King and Pierce Counties (NRCS, online web soil survey, 2007), the site is predominately overlain by two major soil series: Alderwood gravelly sandy loam-6 to 15 percent slopes and the Alderwood/Kitsap soils, 30 to 65 percent slopes. The Alderwood gravelly sandy loam formed on glacial till uplands. The soil is slowly permeable, runoff is slow to medium and erosion hazard is moderate. The Alderwood/Kitsap soils formed in a glacial lake setting. The runoff is rapid to very rapid and the erosion hazard is severe to very severe. The site soils map is depicted on Figure 5, SEISMICITY The project site is located in a moderately active seismic zone. Earthquakes have been historically recorded in the area for about the past 160 years. Western Washington is located in a moderately active seismic zone due to its location at the edge of an active plate margin where subduction is occurring. Currently, the North American plate is overriding the oceanic, or Juan de Fuca plate at a rate of about 1.5 inches per year. The converging plates produce typical subduction zone features. These features include a small trench off the west coast of Washington State where the Juan de Fuca plate begins its descent below the North American plate and an active volcanic arc in the overriding plate, where partial melting of the subducting Juan de Fuca plate generates the geologically young and active volcanoes of the Cascade mountain range. The area between the trench in the Pacific to the west, and the Cascade volcanoes in the east, is called the Cascadia Subduction Zone Researchers identify three earthquake source regions in this tectonic setting: • The first source region delineated is in the subducting Juan de Fuca plate. This source is relatively deep, about 45 to 60 km. The second source zone is in the overriding North American plate. This source zone produces shallow crustal earthquakes with focal depths less than 30 km. ■ A third source region is located at the interface between the converging plates. The 1949 Olympia earthquake, the 1965 Sea-Tac, and the 2001 Nisqually earthquake are recent events associated with the subducting Juan de Fuca plate. 2006-044 Sanitary Se%ycr Collection Syste+n-CAR 4 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 Geophysical investigations suggest that earthquakes may also occur from a network of faults beneath the Puget Sound Basin. The United States Geological Survey recently identified several major faults in the region using geophysical methods, including the Tacoma Fault Zone which encompasses the project area. Dating of coastal scalps coincident shoreline deformations and fossil evidence suggests that the Tacoma Fault Zone has been active during Holocene time approximately dated at between A.D. 770 to 1160 (Sherrod, et al, 2004). POTENTIAL IMPACTS CONSTRUCTION ACTIVITIES Construction of the new train Pump Station plant will include soil excavation to a depth of about 15 feet, temporary shoring, and installation of the tank and fill placement. Gravity sewers, force mains and manholes will require trench excavation to depths ranging from 3 to 13.5 feet deep, temporary shoring and fill placement. Where the sewers cross Dash Point Road, the pipeline will likely be installed using trenchless methods (i.e., pipe jacking). Demolition of septic systems will typically consist of pumping, removal of monitoring ports and manhole lids and any above ground vault features prior to placing and compacting backfill inside the tanks. Demolition of the Pump Station located at the Lower Camp Loop will likely consist of pump retrieval, backfilling and welding the lid back on. Based oil our review, we expect that the potential for impacts from this project is highest during construction and mostly likely be a temporary increase in the potential for localized erosion, which can be minimized as discussed below. SLOPE STABILITY, LANDSLIDE HAZARDS AND EROSION Steep Slopes and Landslides In general, the proposed development will be limited the upland area of the park north and south of Dash Point Road and over to the eastern park boundary near 491h Street SW and LUD sewer stub. This area is predominately overlain by granular glacial soils that are not typically susceptible to deep-seated sliding. Topographic information shown on the project plans indicate that the sewer alignments as currently planned will not require alteration of slopes inclined greater than 15% grade. Since the existing force main that connects the Beach Pump Station to the end of Sewer line E (See Figure 2) will not be modified and remain in service, negligible alteration of steep areas are planned. Maintenance of safe working conditions including temporary excavation stability is the responsibility of the contractor. Temporary shoring of cuts and trenches should be in accordance with the provisions in Part N of The Washington Administrative Code 2006-044 Sanitary Sewer Collection System -CAR 5 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 (WAC) 296-155. With time and the presence of seepage and/or precipitation, the stability of temporary unsupported cut slopes or trench walls can be significantly reduced and erosion or caving can occur. If conditions conducive to instability are observed, appropriate stabilization measures should be inmiediately implemented. EROSION For the New Main Pump Station, activities with earth -related impacts include clearing, grubbing, dewatering, earthmoving, and shoring. These activities will temporarily increase the potential for erosion, either by exposing soil to precipitation and runoff or, in the case of dewatering, by concentrating water flow. Uncontrolled storm water runoff during construction could result in sediment laden surface water from erosion of disturbed, stockpiled, or un-vegetated soil areas. For the gravity and force main sewer system, which will be constructed by the open -cut trench method observable construction activities that could potentially have earth -related impacts would take place along the entire alignment including the connection point to existing systems and pump stations. The earth -related impacts would include clearing, grubbing, dewatering, earthmoving and shoring. These activities will locally increase the potential for erosion from runoff or dewatering, Exceptions may include those areas where pipe jacking construction techniques are used such as at roadway undercrossings planned at Dash Point. Pipe jacking will limit surface disturbance to those areas used as launching and receiving pits. Review of the local soils map (Figure 5) and our existing exploration logs indicate that potential risk of erosion will be low to moderate for the sewer system alignment and at the location of the New Main Pump Station. The soils with the highest erosion potential on site will not be disturbed because the existing force main from the Beach Pump Station will not be replaced as part of this project. Clearing and grading activities are envisioned to take place during periods of dry weather to minimize exposure of subgrade soil to erosive processes. With the implementation of the appropriate erosion control BMPs in accordance with City of Federal Way requirements during construction, potential erosion impacts should be negligible. SEISMIC Seismic hazards are defined as areas subject to a severe risk of earthquake damage as a result of seismically -induced ground rupture, liquefaction, ground spreading, and settlement. A seismic event generates ground movements that are horizontal, vertical, or some combination of the two. It can result in permanent ground damage, directly by ground rupture or indirectly by ground shaking. Ground shaking can damage 2006-044 Sanitary Sewer Collection System -CAR 6 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 underground structures; trigger slippage in areas susceptible to landslides; or cause liquefaction, ground spreading or settlement. Ground rupture is the general teen used to characterize an area where fault movement results in a distinct offset at the ground surface, or possibly a crack or fissure. Seismic hazards in the form of ground rupture are very unlikely but possible at the project location based upon the site proximity to the Tacoma Fault Zone (Sherrod, et al, 2004). Liquefaction is a phenomenon wherein loose, saturated, granular deposits temporarily lose strength and behave as a liquid in response to moderate to strong earthquake shaking. Portions of an area map developed by the Washington State Department of Natural Resources (Palmer, et al, 2004) showing the liquefaction susceptibility of soils within the project area are shown on Figure 6. According to this map, the project area soils generally, have a very low susceptibility to liquefaction because they consist predominately of dense glacial soils. An area of low to moderate susceptibility is noted in the northwest portion of the park where the existing Beach Pump Station is situated. However, our explorations (HWA, 2006) indicate that the existing pump station is founded on hard glaciolacustrine soils that are not prone to liquefy. GROUNDWATER, SPRINGS AND SEEPS Observations during exploration (HWA, 2006, indicated that groundwater was encountered typically within Vashon advance outwash and sandy layers contained in the Pre -Olympia fine-grained deposits or as minor seepage in recessional outwash or weathered till soils perched over dense low permeability Vashon Till. Review of the proposed Sewer Layout Map (Figure 2), the Geologic Map (figure 4), and our exploration logs (HWA, 2006) indicates that typically minor amounts of perched seepage within upper weathered soils over dense till soils will be the most likely encounter groundwater scenarios encountered during construction. Seepage during construction will be controlled by sumps and pumping. However it should be noted, construction dewatering requirements depend on the time of year, recent rainfall and other factors. In addition, trenches can act as interceptors for runoff and perched groundwater. At this site, these effects will be minimized by using native silty sand soils, which when properly placed and compacted have low penneability. VEGETATION During construction in areas previously unaltered by development, removal of vegetation is unavoidable, however, preservation of shrubs in temporary nursery settings and restoration where practical is recommended for erosion control. The removal of large trees and their relocation should be outlined in the approved landscaping plan. We do not recommend that large trees be re-established, or young trees with the potential to grow 2006-044 Sanitary Sewer C011ec1i0n System -CAR 7 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 large be planted any closer than 5-10 feet to new sewer pipeline trenches to avoid potential damage to utilities from roots or wind throw. LIMITATIONS We have prepared this report for Washington State Parks and Recreation Conunission for use in permitting the development and construction of this portion of this project. Experience has shown that soil and ground water conditions can vary significantly over small distances. Inconsistent conditions can occur between explorations and may not be detected by a geotechnical study. Sufficient geotechnical monitoring, testing, and consultation should be provided during construction to confirm that the conditions encountered are consistent with those indicated by explorations, to provide recommendations for design changes should conditions revealed during construction differ from those anticipated, and to verify that the geotechnical aspects of construction comply with the contract plans and specifications. We appreciate this opportunity to be of service. Sincerely, HWA GEOSCIENCES INC. � cos wash a �Qcsol�lsr ro �. A- 704 � STEVEN ELLIOTT GREENE Steven E. Greene, L.E.G. Engineering Geologist, Vice President 2006-044 Sanitary Sea%vr Collection System -CAR 8 HWA GEOSCIENCES INC. January 26, 2007 HWA Project No. 2006-044-300 Attachments: Figure 1. Project Site and Vicinity Map Figure 2. Sewer Layout Map Figure 3 Critical Areas Map Figure 4 Geologic Map Figure 5. Soils Map Figure 6. Liquefaction Susceptibility Map REFERENCES HWA GeoSciences Inc., 2006, Final Geotechnical Repor- Sanitary Server Collection System Project, Dash Point State Park, Prepared for WA State Parks & Recreation Commission, June 30, 2006. NCRS, 2007, Soil Conservation JVlaps for King and Pierce Counties (NCRS on-line web soil survey) Palmer, S.P., W.J. Perkins, and W. P. Grant, 2003, Liquefaction Susceptibility of the Greater Tacoma Urban Area, Pierce and King Counties, Washington, Geologic Map GM-51, WDNR. Sherrod, B.L., T.M. Brocher, C.S. Weaver, R.C. Buckham, R.J. Blakely, H.K. Kelsey, A. R. Nelson, and R. Haugerud, 2004, Holocene fault scarps near Tacoma, Washington, USA, in Geology: January 2004; v. 32; no. l; p 9-12, 4 figures. Troost, K.G., and D.B. Booth, 2006-in review, Geologic rLlap of the Tacoma North 7. 5- jVfinute Quadrangle, Washington, U.S. Geological Survey, Miscellaneous Field Investigation: Scale 1:24 000. Woodward, D.G., F.A. Packard, N.P. Dion, and S.S. Sumioka, 1995, Occurrence and Quality of Ground Water in Southwestern King County, Washington, U.S. Geological Survey, Water Resources Investigations Report 92-4098, 89 p., 4 plates. 2006-044 Sanitary Serer Collection System -CAR 9 HWA GEOSCIENCES INC. TOP01 map printed on 01/24/07 from "Washington.tpo" and' Untltled.tW PROJECT SITE & VICINITY MAP CRITICAL AREAS REVIEW HWAGEOSCIENCES INC SANITARY SEWER COLLECTION SYSTEM PROJECT DASH POINT STATE PARK FIGURE NO. NO. 2006-044 Z w 0 re 0 a CRITICAL AREAS SHADING LEGEND Map Not To Scale Critical Areas: ® Landslide Hazard Areas Erosion Hazard Area Wetlands (1998 City Survey) NORTH Source: City of Federal Way, 2006, Critical Areas Map (online version). Note, southern and easternmost portions of park property not shown. EXCERPT OF COFW CRITICAL:. AREAS MAP R GURE NO. CRITICAL AREAS REVIEW HWA GEOSCIENCES INC. SANITARY SEWER COLLECTION SYSTEM PROJECT 111T No, DASH POINT STATE PARK 2006-044 Qpogl T ._ •Qvt CM `c`i:_ ti.,. k • ems'.. ..�_ -r'�}. : � i Approximate Project Site Boundary Vt F �rPi QviL' `s•' !:: GEOLOGIC MAP SYMBOL LEGEND Map Not To Scale Unit Symbol Unit Desrlp_ilon Qf Quaternary Fluvial Deposits Qvr Vashon Recessional Outwash Qvi Vashon Ice -Contact Deposits Qvt Vashon Till Qva Vashon Advance Outwash Qpog' Pre -Olympia Glacial (coarse -grained) Qpog, Pre -Olympia Glacial (fine-grained) Source: Map of the Tacoma North 7.5-Minute Quadrangle, Washington, U.S. Geological Survey, Misc. Field Investigation, by Troost, K.G. and Booth, D.B. (in Review) GEOLOGIC MAP CRITICAL AREAS REVIEW I HWAGEOSCIENCES INC. SANITARY SEWER COLLECTION SYSTEM PROJECT DASH POINT STATE PARK NORTH FIGURE NO. PROJECT NO. 2006-044 SOIL MAP SYMBOL LEGEND Map Not To Scale Unit Symbol Unit Description AgC11C Alderwood gravelly sandy loam, 6 to 15 percent slopes I Alderwood gravelly sandy loam,16 to 30 percent slopes AkF120F Alderwood and Kitsap soils, 30 to 66 percent slopes 18B Indianola loamy sand, 0 to 6 percent slopes InC118C Indianola loamy sand, 4 to 15 percent slopes Kpc120C Kitsap slit loam, 8 to 15 percent slopes Sk Seattle Muck NORTH 32B Ragnar sandy loam, 0 to 6 percent slopes Source: NCRS website Soil survey of King and Pierce County Area, Washington. SOILS MAP FIGURE No. CRITICAL AREAS REVIEW + SANITARY SEWER COLLECTION SYSTEM PROJECT PROJECT No. HWAGEOSCIENCES INC. DASH POINT STATE PARK 2006-W FEDERAL WAY. WASHINGTON t ash i f r -- r f]asi! I'�f1��1 State Park A roximate Project Site Boundary Map Shading Legend DLiquefaction susceptibility: LOW TO MODERATE F-1 Liquefaction susceptibility: VERY LOW Source: Palmer, S.P., et al, 2003, Liquefaction Susceptibility of the Greater Tacoma Urban Area, Pierce and King Counties, Washington, Geologic Map GM-61, Washington State Department of Natural Resources. Map Not To Scale CRITICAL AREAS REVIEW ULHWAGEOSCIENCES INC. SANITARY SEWER COLLECTION SYSTEM PROJECT WI, �DASH POINT STATE PARK NORTH FIGURE NO. 2006-044 2QI3-'- WASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT SERVICE CENTER 2840 RIVERWALK DRIVE SOUTHEAST AUBURN, WASHINGTON 98002 RECEIVED NOV 2 12006 CITY OF FEDERAL WAY BUIL{7"MER OF TRANSMITTAL PHONE: (253) 931-3904 FAX: (253) 931-3921 TO: I City of Federal Way I DATE: 1 11/20/2006 ATTN: I Dept. of Community Development Services FROM: I Les Kniffen, Environmental Specialist 4 RE: Dash Point State Park — Sewer Improvements — Project No. 03-102233-00 COPIES DESCRIPTION 4 Master Land Use Application 1 Application Fees: Requisition No. PS223 - $2,210.00 (Process III Fee; Shoreline Exemption Fee) — PLEASE PROVIDE INVOICE 2 King County Assessor's Parcel Map — NE 15-21-03 2 King County Assessor's Parcel Map — SW 10-21-03 2 King County Assessor's Parcel Map — SW 14-21-03 1 Pierce County Assessor's Parcel Map (2 sheets) 1 Vicinity Map on 8-1/2 x 11 (King County) 1 Property Owners List (King County),' 300 ft. boundary 1 Property Owners List (Pierce County), 300 ft. boundary 4 PSE Easement (in lieu of Title Reports per Greg Fewins) 4 Sewer Availability — Advanced Sewer System Plan and Report, Huitt-Zollcars, June 2003 4 Site Photographs from each compass point — Aerials 8 City of Federal Way — Critical Areas Summary (22 x 34) 4 Geotechnical Investigation, HWA GeoSciences, August 2006 4 Wetland Delineation, Les Kniffen, Washington State Parks and Rec., November 2006 Wetlands and Streams Assessment, Habitat Technologies, .Tune 2005 4 Joint Aquatic Resources Permit Application (JARPA) 8 Determination of Non -Significance 1 Property Owner Mailing — King County, 300 ft. boundary 1 Property Owner Mailing — Pierce County, 300 ft. boundary 7 Plan Set — 11 x 17 1 Plan Set — 22 x 34 COMMENTS: Please contact Les Kniffen at (253) 288-2566 if you have any questions about this permit application. cc: Troy Fitzsimmons Arnie Larsen, P.E. John Zinza, P.E. r HWAGE®SCIENCES INC. August 10, 2006 HWA Project No. 2006-044-200 Contract No. AE 507-045 Puget Sound Region Parks Development Service Center Washington State Parks and Recreation Commission 2840 Riverwalk Drive SE Auburn, Washington 98002 Attention: Mr. John Zinza, P.E. Subject: SUPPLEMENTAL GEOTEC.HNICAL INVESTIGATION SFM ROAD SURFACE STORMWATER INFILTRATION DESIGN SANITARY SEWER COLLECTION SYSTEM PROJECT Dash Point State Park Federal Way, Washington Dear Mr. Zinza, I.n accordance with your request, HWA GeoSciences Inc. (HWA) completed a supplemental geotechnical investigation for the proposed Sanitary Sewer Collection System Project at Dash Point State Park. The purpose of our investigation was to characterize the soil conditions and provide stormwater infiltration and road section recommendations for a proposed maintenance access road. Our work included advancing several hand holes, laboratory analyses, hydrogeologic analyses, and preparation of this letter report. A scope of work and cost estimate for this supplemental geotechnical investigation was submitted to State Parks on June 21, 2006. Based on changes to the proposed maintenance road design (shortening from % mile to 250 feet), a revised scope and cost estimate was submitted on July 5, 2006. Verbal authorization to proceed was given by John Zinza on the same date. Our services were performed in general accordance with the scope of work. PROJECT UNDERSTANDING 19730 - 64th Avenue AN. As part of the proposed sanitary sewer collection system, t that a , Suit 100 gravel maintenance road will be needed for access to the � Lynmvood, WA 98036..3957 NOV 2 1 2006 'rel: 425.7-L010() 14ox: 4�5.7111.2714 CITY OF FE VERAL WAY www.hvvaKenxien e:c.curn BUILDING DEPT. August 10, 2006 HWA Project No. 2006-044-200 manhole of the proposed sanitary force main (see Figure 1; correlates with Figure 2F of the Final Geotechnical Report dated June 30, 2006). The access road will be approximately 250 feet long by 10 feet wide, and surfaced with gravel. It is desirable to infiltrate the stormwater generated by the road. We further understand that traffic will be limited to maintenance vehicles, with a low frequency of visits. SITE CONDITIONS The proposed access maintenance road runs parallel and approximately 25 feet south of the three most southern condominium units, located at 32001, 47"' Ave. SW, Federal Way, Washington. The proposed maintenance road runs within 1 to 10 feet south of the condominium units plastic fence starting from the existing Lakehaven sewer manhole in the east, to 491h street SW to the west. South of the proposed maintenance road and along the proposed sanitary force main towards the Upper Camploop, the area is a moderately to heavily vegetated deciduous and evergreen forest. The proposed alignment is covered with shrubs and bushes along with fallen wood debris and trash. GENERAL GEOLOGY Geological information for the project area was obtained from the Geologic Map of the Tacoma North 7. 5-Minute Quadrangle, Washington, U.S. Geological Survey, Miscellaneous Field Investigation, Scale 1: 24 000 by Troost K.G. and Booth, D.B. (in review), and the Surficial Geology of Northeast Tacoma, Pierce Counly, Washington, Washington Department of Natural Resources by Mackey Smith, 1976. Both geologic maps indicate that the eastern part of the park is underlain by Vashon recessional outwash sediments comprised of loosely consolidated, stratified sand and gravel. SUBSURFACE CONDITIONS The subsurface exploration program consisted of five hand borings (designated HH-1 through HH-5). Hand holes HH-1 through HE-3 were excavated in the proposed maintenance road, and HH-4 and HH-5 were excavated to the west, in case an alternative infiltration system were needed. The approximate exploration locations are plotted on the Site and Exploration Plan, Figure 1. Recessional outwash sediments were encountered in HH-I through HH-3, and were overlain by up to 6 inches of soft, dark brown, organics debris. The recessional outwash consisted of very loose to medium dense, yellow brown, silty sand with scattered fine to coarse gravel. HII-2 encountered, loose, fine to coarse sandy gravel at about 1.7 feet and HH-3 encountered slightly silty gravelly sand at about 3.4 feet below the ground surface. Beneath the topsoil, hand hole HH-4 encountered soft, dark brown, gravelly, fine to coarse sandy silt with abundant organics debris to a depth of 3.2 feet below the ground surface. Chunks of till -like material were noted at about 2 feet below the ground surface. Dash Point SFM Inhltration.doc 2 HWA GEOSCIENCF.S INC. August 10, 2006 HWA Project No. 2006-044-200 Hand hole HH-5, advanced about 200 feet east of 5 1 " Ave. SW, encountered the same subsurface conditions as HH-1 through HH-3, with the exception of till -like fragments found scattered approximately 2 feet below the ground surface. Each of the explorations was conducted and logged by geologists fiom HWA. Representative soils samples were obtained from the explorations and taken to our laboratory for further examination and testing. Field exploration logs are presented in Figures 3 through 7. The laboratory test results are attached as Figures 8 through 10. We did not observe any ground water seepage within the hand holes or on the gently sloping ground surface, nor evidence of recent seepage. The stratigraphic contacts shown on the logs represent the approximate boundaries between soil types; actual transitions may be more gradual. The soil and ground water conditions depicted are only for the specific dates and location reported and, therefore, are not necessarily representative of other locations and times. We anticipate that ground water conditions at the site will change in response to rainfall, time of year, and other factors. LABORATORY TESTING General Soil samples were obtained and returned to our Lynnwood, Washington, laboratory for further examination and limited laboratory testing. Grain size analyses on four samples were performed to evaluate permeability characteristics for infiltration design. The grain size distributions are shown on Figure 8 and 9. Further, three Cation Exchange Capacity (CEC) tests were submitted to Laucks Testing Laboratories, Inc. under subcontract to HWA. The cation exchange capacity (CEC) of a soil is simply a measure of the quantity of sites on soil surfaces that can retain positively charged ions (cations) by electrostatic forces. Cations retained electrostatically are easily exchangeable with other cations in the soil solution and are thus readily available to exchange and retain heavy metals and other pollutants. The CEC results are attached. ESTIMATING INFILTRATION RATES We have consulted both the King County Surface Water Design Manual (2005) and the Washington State Department of Ecology (Ecology) 2005 Stormwater Management Manual for Western Washington. In our opinion, the size and type of project do not warrant in -situ field testing of infiltration, and prescriptive methods defined in Appendix C of the King County manual for small projects are more appropriate, even though this project may not necessarily be classified as residential or agricultural. The USDA classifications determined from grain size testing of soils from the hand holes are adequate for determining the size of prescriptive infiltration feature in accordance with Appendix C (se Table 1, below). We have also estimated short-term and long-term Dash Point SFM Infiltration.doc 3 HWA GEOSCIENCES INC. August 10, 2006 HWA Project No. 2006-044-200 infiltration rates based on USDA textural analysis and ASTM grain size distribution from soil samples, in accordance with the Ecology manual. USDA Soil Textural Classification Infiltration rates may be estimated from grain size distribution data using the USDA textural analysis approach. HWA analyzed four soil samples collected from hand borings for grain size distribution and textural classification in accordance with USDA test procedures. Table 1 summarizes the results of the grain size analyses. The soil laboratory data are attached as Figures 8 through 10. To determine long-term infiltration rates based on the USDA method, Ecology recommends that the short-term infiltration rates be reduced by a correction factor based on the soil textural classification, average degree of long-term facility maintenance, TSS (total suspended solids) reduction through pretreatment, and site subsurface variability. Based on the USDS grain size method, laboratory test results indicate an estimated long-term infiltration rate of 0.50 in/hr for shallow receptor soils between HH-1, HH-2 and HH-3 (assuming a depth of 1.7 to 3.7 feet or greater), and 0.25 in/hr for soils at the location of HH-5 (assuming a depth of 2.7 feet or greater). Table 1 Short -Term and Long -Term Infiltration Rates Based On USDA Soil Textural Classification Sample Depth USDA Soil Short -Term Correction Estimated Long - Classification Infiltration Factor, Term (Design) (feet) ) Rate Infiltration Rate (CF) (inlhr) (inlhr) HH-1 2.5 Loamy Sand 2 2 4 0.5 HH-2 1.7 Loamy Sand 4 0.5 HH-3 3.7 Loamy Sand 2 4 0.5 HH-5 2.7 Sandy Loam 1 4 0.25 Short-term infiltration rates based on Table 3.7, Stormwater Management Manual for Western Washington, Ecology, 2005. ASTM Grain Size Distribution The ASTM grain size distribution method compares infiltration measurements from full- scale infiltration facilities to soil gradation data developed using the ASTM procedure Dash Point SFM InfiltrationAm 4 HWA GEOSCIENCES INC. August 10, 2006 HWA Project No. 2006-044-200 (ASTM D422). Because this method compares data from existing full-scale infiltration facilities, the estimated infiltration rates are presented as estimated long-term infiltration rates. The estimated long-term infiltration rates assume an average degree of long-term facility maintenance, TSS control, and site variability in the subsurface conditions. Table 2 shows the results of the grain size analyses and Appendix B presents the soil laboratory data. Based on the ASTM grain size method, our laboratory test results indicate estimated infiltration rates of 0.8 in/hr for shallow receptor soils between HH-1, HH-2 and HH-3 (assuming a depth of 2.5 feet or greater), and no rate could be determined for soils at location HH-5 because of the fine-grained nature of the soil. Table 2 Long -Term Infiltration Rates Based on ASTM Grain Size Distribution Sample Depth Soil Classification ASTM (13422) Long -Term Infiltration (feet) (ASTM) D10 Size Rate (inlhr) (mm) HH-1 2.5 Silty SAND with gravel (SM) 0.05 08 HH-2 Poorly graded GRAVEL with silt 0.19 2 0* 1.7 and sand (GP -GM) HH-3 3.7 silty SAND with gravel 0.05 0.8 HH-5 2.7 silty SAND with gravel 0.02 NA NA -Method not valid for soils with D10 less than 0.05 mm. *-May not met criteria for treatment per W DOE, 2005 SW WM Manual, Volume Ill, Section 3.3.7 (site Suitability Criteria. We consider that the weathered recessional outwash is suitable as a medium for surface water infiltration, especially after compaction as road subgrade. According to the King County Surface Water Manual, a gravel -surfaced road has a runoff coefficient of 0.80, e.g. only 20 percent of the runoff is considered to infiltrate through the road surface. We recommend that the maintenance road be designed according to one of the following: 1) With a stoimwater dispersal area, adjacent to and for the length of the road, with the road surface sloped to drain to the dispersal area; or 2) With a gravel -filled trench along one edge, with the road surface graded to promote runoff to the trench. We recommend the trench be designed in general accordance with the detail shown in Figure C.2.23 of Appendix C of the King County Manual. Dash Point SFM I» filtration.doc 5 HWA GEOSCIENCES INC. August 10, 2006 HWA Project No. 2006-044-200 EARTHWORK AND ROADWAY SECTION We recommend that the maintenance road be constructed after completion of the sanitary force main. Subgrade preparation should consist of stripping the surficial organics, topsoil and any other deleterious materials. The hand holes show that the thickness of stripping is likely to be about 6 inches. However, localized areas requiring deeper stripping may be present. Compaction of the exposed mineral soil should be minimized prior to gravel borrow placement. We recommend a roadway section consisting of the following: • 6 inches of crushed surfacing top course (CSTC), over • 6 inches of gravel borrow, per WSDOT 9-03.14(1). LIMITATIONS We have prepared this report for Washington State Parks and their agents for use in design of a portion of this project. This report should be provided in its entirety to prospective contractors for bidding and estimating purposes; however, the conclusions and interpretations presented in this report should not be construed as a warranty of the subsurface conditions. Experience has shown that soil and ground water conditions can vary significantly over small distances. Inconsistent conditions can occur between explorations and may not be detected by a geotechnical study. If, during future site operations, subsurface conditions are encountered which vary appreciably from those described herein, HWA should be notified for review of the recommendations of this report, and revision of such if necessary. Sufficient geotechnical monitoring, testing, and consultation should be provided during construction to confirm that the conditions encountered are consistent. with those indicated by explorations, to provide recommendations for design changes should conditions revealed during construction differ from those anticipated, and to verify that the geotechnical aspects of construction comply with the contract plans and specifications. Within the limitations of scope, schedule and budget, HWA attempted to execute these services in accordance with generally accepted professional principles and practices in the fields of geotechnical engineering and engineering geology in the area at the time the report was prepared. No warranty, express or implied, is made. The scope of our work did not include environmental assessments or evaluations regarding the presence or absence of wetlands or hazardous substances in the soil, surface water, or ground water at this site. Dash Point SFM lnfiltration.doc 6 HWA GEOSCIENCES INC. August 10, 2006 HWA Project No. 2006-044-200 This firm does not practice or consult in the field of safety engineering. We do not direct the contractor's operations, and cannot be responsible for the safety of personnel other than our own on the site. As such, the safety of others is the responsibility of the contractor. The contractor should notify the owner if he considers any of the recommended actions presented herein unsafe. Q•O We appreciate this opportunity to be of service. Sincerely, HWA GEOSCIENCEs INC. BRADWVi C, TW Brad W. "Thurber, L.E.G. Engineering Geologist BWT:SEG:bwt Attachments: Steven E. Greene, L.E.G. Vice President Figure 1. Site and Exploration Plan Figure 2. Legend of Terms and Symbols Used on Exploration Logs Figures 3-7. Logs of Hand holes IIH-1 through HH-5 Figures 8, 9. Grain Size Distribution Curves Figure 10. USDA Textural Classification Chart Cation Exchange Capacity Results, Laucks Testing Laboratories Inc. Dash Point SFM Infiltration.doc 7 HWA GEOSCIENCES INC. a3 3 E 2& RELATIVE DENSITY OR CONSISTENCY VERSUS SPT N-VALUE COHESIONLESS SOILS COHESIVE SOILS Density N (blows/ft) Approximate Consistency N (blows/ft) Approximate Undrained Shear Relative Density(%) Strength fps0 Very Loose 0 to 4 0 - 15 Very Soft 0 to 2 <250 Loose 4 to 10 15 - 35 Soft 2 to 4 250 - 500 Medium Dense 10 to 30 35 - 65 Medium Stiff 4 to 8 500 - 1000 Dense 30 to 50 65 - 85 Stiff 8 to 15 1000 - 2000 Very Dense over 50 85 - 100 Very Stiff 15 to 30 2000 - 4000 Hard over 30 >4000 USCS SOIL CLASSIFICATION SYSTF-M MAJOR DIVISIONS GROUP DESCRIPTIONS Coarse Gravel and Clean Gravel GW Well -graded GRAVEL Grained Gravelly Soils (little or no fines) Soils ehc ii.•)) GP Poorly -graded GRAVEL More than Gravel with tt c GM Silty GRAVEL 50% of Coarse Fraction Retained Fines (appreciable GC Clayey GRAVEL on No 4 Sieve amount of fines) Sand and Clean Sand • • $W Well -graded SAND More than Sandy Soils (little or no fines) $P Poorly -graded SAND 50% Retained on No 50% or More of Coarse Sand with SM Silty SAND 200 Sieve Fraction Passing Fines (appreciable SC Clayey SAND Size No- 4 Sieve amount of fines) ML SILT Fine Silt Grained and Liquid Limit / CL Soils Clay Less than 50% Lean CLAY OIL Organic SILT/Organic CLAY MH Elastic SILT 50% or More Silt Liquid Limit CH Fat CLAY Passing and 50% or More No. 200 Sieve Clay OH Organic SILT/Organic CLAY Size r, Highly Organic Soils PT PEAT COMPONENT DEFINITIONS COMPONENT SIZE RANGE Boulders Larger than 12 in Cobbles 3 in to 12 in Gravel 3 in to No 4 (4,5mm) Coarse gravel 3 in to 314 in Fine gravel 3/4 in to No 4 (4.5mm) Sand No, 4 (4,5 mm) to No. 200 (0.074 mm) Coarse sand No. 4 (4.5 mm) to No, 10 (2.0 mm) Medium sand No. 10 (2.0 mm) to No. 40 (0,42 mm) Fine sand No, 40 (0,42 mm) to No, 200 (0.074 mm) Sill and Clay Smaller than No, 200 (0.074mm) TEST SYMBOLS %F Percent Fines AL Afterberg Limits: PL = Plastic Limit LL = Liquid Limit CBR California Bearing Ratio CN Consolidation DO Dry Density (pcf) DS Direct Shear GS Grain Size Distribution K Permeability MD Moisture/Density Relationship (Proctor) MR Resilient Modulus PID Photoionization Device Reading PP Pocket Penetrometer Approx, Compressive Strength (tsf) SG Specific Gravity TC Triaxial Compression TV Torvane Approx. Shear Strength (tsf) UC Unconfined Compression SAMPLE TYPE SYMBOLS, 2.0" OD Split Spoon (SPT) (140 lb. hammer with 30 in. drop) Shelby Tube • I 3-1/4" OD Split Spoon with Brass Rings 0 Small Bag Sample Large Bag (Bulk) Sample u Core Run Non-standard Penetration Test (3,0" OD split spoon) GROUNDWATER SYMBOLS Q Groundwater Level (measured at tlrrie of drilling) 1 Groundwater Level (measured in well or open hole after water level stabilized) COMPONENT PROPORTIONS PROPORTION RANGE I DESCRIPTIVE TERMS <5% 1 Clean 5 - 12% 1 Slightly (Clayey, Silty, Sandy) 12 - 30% 1 Clayey, Silty, Sandy, Gravelly 30-50% Very (Clayey, Silty, Sandy, Gravelly) Components are arranged in order of increasing quantities. NOTE& Soil classifications presented on exploration logs are based on visual and laboratory observation. Soil descriptions are presented in the following general order: MOISTURE CONTENT Density/consistency, color, mociifier(ifany) GROUP NAME, additions to group name (ifany), moisture DRY Absence of moisture, dusty, content. Proportion, gradation, and angularity of constituents, additional comments. dry to the touch (GEOLOGIC INTERPRETATION) MOIST Damp but no visible water, Please refer to the discussion in the report text as well as the exploration logs for a more WET Visible free water, usually complete description of subsurface conditions. soil is below water table. SFM Road Surface Storm Water Infiltration Design LEGEND OF TERMS AND V Q1 Sanitary Sewer Collection System Project SYMBOLS USED ON HWAGEOSCIENCES INC. Dash Point State Park EXPLORATION LOGS LEGEND 200fli44.20n,G11?,l 8I9106 Federal Way, Washington PROJECT t:u 2006-044-200 EI RE 2 DRILLING COMPANY: HWA DRILLING METHOD: Hand Auger SAMPLING METHOD: Grab LOCATION: See Figure 1 SURFACE ELEVATION: f feet DATE STARTED: 7/7/2006 DATE COMPLETED: 7(7/2006 LOGGED BY: T. Taddese & D. Coltrane 07 U) N U J J O = O m ut o U)) D DESCRIPTION 0 - Soft, dark brown, DUFF, moist, roots and rootlets, (TOPSOIL) SM Loose to medium dense, yellow brown, silty, fine to coarse SAND, with fine gravel, moist. (RECESSIONAL OUTWASH) E 2 SM Medium dense, light yellow brown, silty, gravelly, fine to coarse SAND, moist. 1,9% organics. 3-{ Hand hole terminated at 2,8 feet due to refusal. No ground water seepage observed during excavation, 4 w m Z w ) z C Lu ❑ LU Li w o z a 0. o = O O U) u a CO S-1 S-2 S-3 S-4 GS 0 OC 0 20 40 60 80 10( Water Content (%) Plastic Limit 1--0 Liquid Limit Natural Water Content NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated and therefore may not necessarily be indicative of other times and/or locations. SFM Road Surface Storm Water Infiltration Design HAND HOLE: ffSanitary Sewer Collection System Project HH-1 HWAGEOSCIENCES INC. Dash Point State Park PAGE: 1 of 1 Federal Way, Washington 3 PROJECT NO.' 2OD6-04�1-2aQ FIG RE HANDHOL 2006-044-200,GPJ 6/9/06 DRILLING COMPANY: HWA DRILLING METHOD: Hand Auger SAMPLING METHOD: Grab LOCATION: See Figure 1 U U U N J_ O x rn F. m n w r(n 0 U Z) 2— SURFACE ELEVATION: DESCRIPTION — J4 Soft, red brown, DUFF, moist, roots and rootlets. (TOPSOIL) SM Loose, dark yellow brown, silty, fine to coarse SAND, with fine to coarse sub -rounded gravel, moist (RECESSIONAL OUTWASH) GP ................................................... Loose, brown, slightly silty, fine to coarse sandy, fine ° GM GRAVEL, moist, 2.0% organics. Hand hole terminated at 2.3 feet due to refusal. No ground water seepage observed during excavation, t feet DATE STARTED: 7/7/2006 DATE COMPLETED: 7/7/2006 LOGGED BY: T. Taddese & D. Coltrane Lu W U CoZ U W ~¢ a C t U) z C ui z 2:E z 3 x 0 0 cn U) 0- Z O C7 S-4 GS OC NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated and therefore may not necessarily be indicative of other times and/or locations 2 I— w 0 0 �-4 20 40 60 80 100 Water Content (%) Plastic Limit Liquid Limit Natural Water Content SFM Road Surface Storm Water Infiltration Design HANU HULL: VSanitary Sewer Collection System Project HH-2 Dash Point State Park PAGE: 1 of 1 HWAGEOSCIENCES INC. Federal Way, Washington PROJECT'v0. 2005-044-200 FIOURIE7 HANGHOL 2006.044.200 GPJ 8PInE DRILLING COMPANY: HWA DRILLING METHOD: Hand Auger SAMPLING METHOD: Grab LOCATION: See Figure 1 O g N J J O F m rn EL w >- UU) ❑ rn Z) 0 --I 1 3 SURFACE ELEVATION: t feet DATE STARTED: 7/7/2006 DATE COMPLETED: 7/7/2006 LOGGED BY: T. Taddese & D. Coltrane LiZ w U aFU- UJ ¢ U U) ro w wof J J w ❑ ❑ DESCRIPTION C0 O a- ;F� O ❑ Hand hole terminated at 4.25 feet due to refusal. No ground water seepage observed during excavation. � S-4 S-5 GS NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated and therefore may not necessarily be indicative of other times and/or locations. J F-- 4 1 �5 A 20 40 60 80 100 Water Content (%) Plastic Limit 1-- 0 Liquid Limit Natural Water Content SFM Road Surface Storm Water infiltration Design HAND HOLE: Sanitary Sewer Collection System Project HH-3 1MGEOSUENCES INC Dash Point State Park PAGE: 1 of 1 Federal Way, Washington PROJECTNO- 2006^044-200 FIGURE' HANDHOL 2006-044-200 GPJ M105 DRILLING COMPANY: HWA DRILLING METHOD: Hand Auger SAMPLING METHOD: Grab LOCATION: See Figure 1 u) U) U O = O F ro U) Lu 7 2- 3— SURFACE ELEVATION: t feet DATE STARTED: 7f7/2006 DATE COMPLETED: 7f7/2006 LOGGED BY: T. Taddese & D. Coltrane W W U a 0] Z W U FF Z L C U)¢ W Lu Lu � LU of Z J L bLu z 3 x O F W DESCRIPTION en U) o E 8 F O o 0 0 r„, r Very soft, dark brown, silty, fine to coarse gravelly. DUFF, moist, roots and rootlets. (TOPSOIL) ML Soft, dark brown, fine to coarse gravelly, fine to coarse sandy, SILT, with abundunt organics debris, moist. Chunks of till like material noted at 2 feet below the ground surface, I I Hand hole terminated at 3,1 feet due to refusaL No ground water seepage observed during excavation. S-1 n S-2 —1 1 .3 0 20 40 60 60 100 Water Content (%) Plastic Limits Liquid Limit Natural Water Content NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated and therefore may not necessarily be indicative of other times and/or locations. SFM Road Surface Storm Water, Infiltration Design HAND HOLE: Sanitary Sewer Collection System Project HH-4 Dash Paint State Park PAGE: 1 of , HWAGEoSCIENCES INC. Federal Way, Washington P1iOJEOT N4.: 200E-044-200 FIGURE, 6 HANDHOL 2006-044-200.GPJ 6/9/06 DRILLING COMPANY: HWA DRILLING METHOD: Hand Auger SAMPLING METHOD: Grab LOCATION: See Figure 1 w U 5 N U J .J O a g w > <n In rn D 0 M SURFACE ELEVATION: f feet DATE STARTED: 7/7/2006 DATE COMPLETED: 7/7/2006 LOGGED BY: T. Taddese & D. Coltrane of w U m Z) Z ~� U ~ W Z LJ ~ a a w W N w Z < z o x O DESCRIPTION U)(n a :6 O 0 Very soft, dark brown, DUFF, moist, roots and rootlets. (TOPSOIL) SM Loose, light orange brown, silty, fine to coarse gravelly, tine to coarse SAND, moist. (RECESSIONAL OUTWASH) ........................._.........._......_................ Loose to medium dense, light yellow brown, silty, fine gravelly, SM fine to coarse SAND, moist. Trace organics, 3.8 % organics Hand hole tenninated at 3.0 feet due to refusal. No ground water seepage observed during excavation, 1 4 --1 NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated 161 and therefore may not necessarily be indicative of other times and/or locations. GS OC Plastic Limit Liquid Limit Natural Water Content r 0 I-1 1 F-- 2 1 F-- 3 1 SFM Road Surface Storm Water Infiltration Design HAND HOLE: i Sanitary Sewer Collection System Project HH-5 � Dash Point State Park PAGE: 1 of , HWAGEOSCIENCES INC. Federal Way, Washington PROJECT NO : 2006-044-200 FIGURE: 7 HANDHOL 2006-044-200.GPJ 8/9/06 w', I LO 0 o C m o (6 �2 V � ) N U')v U')o O e LO of U J O 0 C (9 _ O z fn — O N O LL. U � U p _ _ CDW 5 N cq O Ql W `o Q) > LL - r U _ - O _ __-_ _ Zco of gyp- -- 3G -- -- - -- --- _ �f - -- o c _0 L CD W m 3 z v- —_ — -- -- -- — - — "—�-- Q rn o a ZQ Z o C L -- - W - -_� O 3 N O Q3 - - - - - - N a- -- - -__ - - ti O z Q n 3 - - -- -- -- _ _- N w z p Cl) m o - .T 3 U) O rn cu o J QQQ1 U L L J J !_ -- -- - �— Un (7 Un —� -- --- -- W M Ile C_ 80 —� 2 N N 7 — — — J Lij ci ai -- m�. _ -- -- ---- - -- - N W O-- -- — ----- -- -- a U Q T M- O CA r c0 C) C) M N O O 2 2 2 a0 1HSOAA AE] 2JDNld 1NEIO2]Eld r 00 CO } N Z Q L QCo N0U) cN Q C ALL � O J o V N o Z H U w C � U N C O + a_ E C T � U) N tin '2 U co E N A (u cn�a U) 0 U) LL M O c� C LL U) u Z w O C.7 J U J_ U) 1 a ,cl LL- Z� Q U) E LU N U) a> LU LLI U) a� ❑ of O ❑ U Z U) c � - IL LLI Q M CD a) 0 0 U o m m CD I- oo CD LO 't coi o 0 1HJ18M A8 2JANId 1NAO213d LO O 0 0 0 O O 6 CD O O 0 u7 U) o w LU O C J J LU N U) �Z o cD n n LL U p� lC6 o W �o a J a J ro o U (n C n N 3 � O O 00 (� o c co ri N � N O 3 LL zz o < z O Q N U 3 LL o cn n U L o _ co F- a � QN W a Q U) Ln 2 O ..... m } N Q 0 u QC� a N0C/) c0 COQ � LL o J o U T— a LU ww C � U � 0 O L (III d ) E C a, cs (n UCL flr s`u � C Q w LL @ C O L� S4 (02 LL U) 0 100 ^o 90 ry0 80 clay o 1 70 Cn � �Ni 4 G❑ A Vv� 50 A O silty s G� sandy clay o 40 clay o` clay loam silty clay loam o�1 30 sandy clay loam �o 20 io3rn silt loam 10 sandy loam o0 loamy O silt sand Saido0 0 100 00 `po O 1O `so le) "O OD -D O PERCENT SAND (2 - 0.05mm) Borehole _ Depth (ft) USDA Classification Sand % Silt (%) Clay - 79.4 18.3 %) 2.3 • HH-1 2.5 � _LOAMY SAND ■ A O _ HH-2 HH-3 1.7 3.7 LOAMY SAND 84.0 16.0 0.0 _ LOAMY SAND SANDY LOAM 84.5 69.4 15.0 24.9 0.5 5.6 HH-5 _ 2.7 Fractions normalized to 100% passing the 2mm (#10) sieve SFM Road Surface Storm Water Infiltration Design V LAI Sanitary Sewer Collection System Project USDA Textural HWAGEOSCIENCES INC. Dash Point State Park Classification Chart Federal Way, Washington 10 PROJECT NO: 2006-044-200 ;: i,;�,.,;� USDA TEXTURAL CLASSU- CATtON M-044-209.GPJ 819106 L uclkse Testing lzboratories, Inc. 940 South Harney St., Seattle, WA 98108 (206) 767-5060 FAX (206) 767-5063 Client: HWA GeoSciences Inc 19730 64th Ave W Ste 200 Lynwood, WA 98036 Work ID: Taken By: Transported By: �. fi 'n 3tatR P: r1s CLIENT Sample Identification: www.lauckslabs.com Certificate of Analysis SDG Number: HG!Esall 01 Date Received: D711212006 Date Reported: 0810112006 Client Job ID: 20 5-044 _Lab Sample ID Sate In Descri tion Collection Dateffime DPO IAGES060701-001 HH-1 (S-4) 07/10/2006 14:00 Soil HGES060701-002 HH-2 (S-4) 07/10/2006 14:00 Soil HGES060701-003 HH-5 (S-3) 07/10/2006 14:00 Soil Unless otherwise instructed all samples with the exception of samples which are consumed during the analysis, such as microbiological samples, will be disposed of on or after 9/9/06 Respectfully submitted, Laucks Testing Laboratories, Inc. l J. . Owens This report is submitted for the exclusive use of the person, partnership, or corporation to whom it is addressed. Subsequent use of the name of this company or any member of its staff in connection with advertising or sale of any product or process will be granted only on contract. This company accepts no responsibility except for the performance of inspection and/or analysis in good faith and according to the rules of trade and science. Ck Panted on Recycled Paper 4Eo 0 L c k s %A", vth, Testing Laboratories, hie. 940 South Harney St., Seattle, WA 98108 (206) 767-5060 FAX (206) 767-5063 www.lauckslabs.com Final Results for SDG HGES060701 Sample Number: HH-1 S-4 Method Analyte Final result SM2540B Solids, Total 92.7 SW9081 Cation Exchange Capacity 9.1 Units of result meq/100gm Sample Number: HH-2 (S-4) Method Analyte Final result Units of result SM2540B Solids, Total 95.5 % SW9081 Cation Exchange Capacity 6.8 meq/100gm Sample Number: HH-5 (S-3) Method Analyte Final result Units of result SM2540B Solids, Total 91.9 % SW9081 Cation Exchange Capacity 13 meq/100gm FORM LTL-RSR-45.0 A Printed on Recycled Paper 0� �1 Rti��• aTATF'r}�, Rex Derr Diredgr rxaa STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT OFFICE 2840 Riverwalk Drive SE • Auburn, Washington 98002 • Phone: (253) 931-3904 • Fax: (253) 931-3921 November 16, 2006 Mr. John Zinza, P.E., Project Engineer Washington State Parks and Recreation Commission Puget Sound Parks Development 2840 Riverwalk Drive S.E. Auburn, Washington, 98002 RE: Wetland Delineation - Dash Point State Park — Sanitary Sewer Collection System Dear Mr. Zinza: INTRODUCTION An onsite assessment was conducted to confirm the presence of an additional wetland not identified in the report "Wetland and Stream Assessment Letter Report Dash Point State Park, City of Federal Way, Washington," Habitat Technologies, Thomas D. Deming, June 30, 2005. In the interest of brevity, this report concurs with and adopts all elements of the previous mentioned report. This report updates WA Department of Fish and Wildlife's Priority Habitats and Species data using their August 2006 data release as it concerns an eagle nest within the park and will further focus on the issue of the new unidentified wetland. The site was assessed using the criteria and methods established in the 1987 Corps of Engineers Wetland Delineation Manual. A site visit on June 1, 2006 identified a fourth wetland, approximately 11,000 SF in size. This wetland site begins at a culvert just west of campsite 22 and extends approximately 210 LF on its long axis on a bearing of 209 degrees SSW from true North where it empties to into the canyon via a shallow swale. The canyon and the creek that lie within it traverse the width of the park and are addressed in the Habitat Technologies report. The fourth wetland identified as Wetland Complex C in the plan set is a City of Federal Way designated Category 2 Wetland as it connects to the afore mentioned Type F stream. Wetland Delineation - Dash Park Page 2 S?TE CONDITIONS Soils: The soil is hydric having what appears to be a Histic Epipedon lying upon a mineral horizon with low chroma and bright mottles. From 0 to 11 inches the soil is a brownish black color (7.5YR 3/1) and has an organic muck texture indicative of a Histic Epipedon. From 11 inches to the depth of the spade approximately 16 inches the soil is a sandy 10YR 4/2 grayish yellow brown color. Some small (<5mm) bright red mottles were present in this horizon. The mottles were not characterized. The presence of a Histic Epipedon, low chroma in both horizons and the presence of bright mottles in the mineral horizon indicate a hydric soil. The soil does not appear to match the mapped soil unit i.e. a Kitsap soil. The sandy underlying mineral soil (11 inches plus) more closely matches the Indianola soil also present in the vicinity. Hydrology: On June 1, 2006, wetland hydrology was present; there was standing water to a depth of two to three inches within the depression beginning at a culvert located just east of campsite 22 extending on the long axis 210 LF bearing 209 degrees SSW from true North. The growing season at the nearest Weather Service Contract Meteorological Observatory (Seattle — Tacoma Airport) is 253 days. The growing is 253 days in five of 10 years at the above station. The last day in the spring (50 percent probability) of the temperature freezing to 28 degrees is March 9 while the first day in the fall the temperature freezing to 28 degrees (50 percent probability) is November 17 at Seattle - Tacoma Airport (Soil Survey King County Area Washington, USDA Soil Conservation Service, 1973). Therefore, by June 1 standing water i.e. wetland hydrology had been present for approximately 83 days or 32 percent of the growing season to that date. December and January were substantially wetter then usual February and March were drier. April and May were normal i.e. close to average. The investigator is confident that June 1, 2006 conditions had returned to normal. The presence of standing water during the growing season on June 1 in a typical year is indicative of wetland hydrology. Vegetation: The plant community in this complex is hydrophytic in nature. The depression center in a paulustrine emergent wetland community characterized by creeping buttercup and curly dock nearly 100 % in the NNE half of the depression and climbing nightshade in the SSW. The emergent zone in ringed by a shrub/scrub of Indian plum, cascara, and red alder. This vegetation is adapted to growing in saturated condition. Wetland Delineation - Dash PC.�tate Park Page 3 Conclusion: The area designated as Wetland Complex C has all the characteristics required to be designated a wetland as defined by 1987 Corps of Engineers Wetland Delineation Manual. The soils are hydric, the hydrology is hydric, and the vegetation is hydric. See the attached Data Form Additional Point of Clarification: The August 2006 updated of the Washington Department of Fish and Wildlife's Priority Habitat Species database indicates a single bald eagle nest, a 400 LF perimeter management zone, an 800 LF perimeter and associated shoreline management zone for the bald eagles. See attached Figure 1. Respectfully pe-- Leslie C. Kniffen Environmental Specialist, Region SEPA Responsible Official Attachment Cc: Troy Fitzsimmons Arnie Larsen, P.E. DATA FORM JUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project Site: Dash Point State Park Applicant/Owner: Washington State Parks & Recreation Commission Investigator: Leslie C. Kniffen Date: County: State: June 1, 2006 Kin WA Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is Area a Potential Problem Area? (if needed, explain on reverse) ❑ Yes Yes Yes No No IU No Community ID: TransectID: Plot ID: DP# 01 ❑ ❑ VEGETATION Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1 Alnus rubra 30 % red alder) Tree FAC a 2 Fran ula urshiana 30 % cascara buckthorn Tree FAC- 9 3 Oemleria cerasirormis Indianplum) Shrub FACU 10 4 Rubus amien/aces Focke Hlmala n b2aCkber Shrub FACU 11 5 Ranuncufusre ns 90% (creeping buttercup) Herb FACW 12 6 Solarium dulcamara 100 % (climbino nightshade) Herb FAC+ 13 7 Rumex obtusirollus 10% bitter dock Herb I FAC 14 Percent of Dominant Species that are OBL, FACW or FAC (excluding FAC-): 57% Remarks: Vegetation grades from P. mensezii/A rubra in uplands through a basin that grades to A rubra/O cerasiformis and then variously to 100% R. ripen or patches of 100%s Solarium dulcamara. Both of the later were in standing water with no tree or shrub canopy. HYDROLOGY LJ I Recorded Data (describe in Remarks) Stream, Lake, or Tide Gauge Aerial Photographs Other data available Wetland Hydrology Indicators: Prima Indicators: ® Inundated ® Saturated in Upper 12 inches ❑ Water Marks ❑ Drift Lines © Sediment Deposits ❑ Drainage Patters in Wetlands JNrded Field Observations: Depth of Surface Water: 2 (In.) Depth to Free Water in Pit: (In.) Remarks SOILS Secondary Indicators (2 or more required): © Oxidized Root Channels in Upper 12" Water -Stained Leaves ® Local Soil Survey Data ❑ FAC-Neutral Test Other (explain in remarks) Map Unit Name (Series and Phase): Kitsa K C Taxonomy (Subgroup): Dystric Xerocherpt Drainage Class: Circle Field Observations Confirm Mapped Type? Yes No Profile DesaMi ton: De Ih inches Horizon Matrix Color Munsell Moist Mottle Colors Munsell Moist Mottle Abundance/ Size/Conirast Texture Concretions, Structure, etc. 0-11 O 7.5 YR 311 Muck or sifty cla 11 —16+ B 10 YR 412 Red 3%/<5mm Sand H dno Sall Indicators: © Histosol ® Reducing Conditions ® Histic Epipedon ® Gleyed or Low-Chroma Colors ❑ Sulfidic Odor ❑ Concretions ❑ Aquatic Moisture Regime ❑ Organic Streaking in Sandy Soils High Organic Content in Surface Layer in Sandy Soils ❑ Listed on National Hydric Soils List ❑ Listed on Local Hydric Soils List ❑ Other (explain in remarks) Remarks: Top 11 inches saturated with standing water 2 inches deep, possibly characteristic of a Kitsap but sandy condition at 11+ inches is uncharacteristic of Kitsap rather more likely Indianola. Discussions with the Region Engineer, A. Larsen indicate there maybe a shallow layer of Kitsap silty -clay overlaying an Indianola that is prominent down slope. WETLAND DETERMINATION Hydrophytic Vegetation Present? Yes � No Is this Sampling Point Within a Wetland? � Yes = No Wetland Hydrology Present? ® Yes ❑ No Hydric Soils Present? ® Yes ❑ No Remarks: This site has standing water June 1, 2006, Dec 05 and Jan. 06 were wetter then normal (Jan being 200% of normal) Feb. -and March were 37 and 41 % drier then normal. However, April was only 7 % wetter and May was 1 only 1 % drier. By June 1, 2006 the sampling date conditions should have equalized such that the investigator believes it to be a normal condition on the date of the assessment. Form Content Approved by HQUSACE 3192 DelineatlonDataForm 050426.doc E2USN Legend EIOWL E2USN BALD 400 F EEP SLOPES AND WDFW Sensitive Areas NWI Wetlands Eagle Buffer C4 Eagle Nest ParkBoundaries VINES ALONG PUGET SOUND. N W E s PARKLAND AREAS IN KING AND PIERCE COUNTIES. SOME CIF THESE AREAS ARE RELATIVELY Figure's U 2,500 Feet 3TA X. C Rex Derr x` Director STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT OFFICE 2840 Riverwalk Drive SE • Auburn, Washington 98002 • Phone: (253) 931-3904 • Fax: (253) 931-3921 November 16, 2006 DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES 33325 8th Avenue South PO Box 9718 Federal Way WA 98063-9718 Dear Sir or Madam: In regards to the September 20, 2006 letter identifying and describing a fourth wetland at Dash Point State Parks, Mr. Greg Fewins advised me to include a brief letter describing my qualifications to identify wetlands. 1 was formal trained in identifying wetlands using the methods described in the 1987 Corps of Engineers Wetland Delineation Manual by Charles J. Newling and James W. Teaford of the Wetland Training Institute, Inc. both renowned wetland scientists. I am currently employed as an Environmental Specialist IV with Washington State Parks and am the Agency's SEPA Responsible Official for our Puget Sound Region. My collegiate training including several years of postgraduate training is in forest community ecology and includes hydrology, soils, wildlife and fisheries sciences, and planning. Sincerely, Leslie C. Kniffen Environmental Specialist IV 4 HABITAT TECHNOLOGIES June 30, 2005 D (� n E C-, �_�_ Ii W E U Mr. Don Helling, Project Manager @ Huitt-Zollars, Inc.. 814 East Pike Street Seattle, -Washington 98122 JUi_ 0 5 2005 Washington Siam, Ntrks ano Recreation Puget Sound Resources ueveiepment RE: WETLAND AND STREAMS ASSESSMENT LETTER REPORT Dash Point State Park, City of Federal Way, Washington Dear Mr. Helling-, INTRODUCTION Following your request Habitat Technologies has completed an assessment of wetlands and streams within the Dash Point State Park project area to assist with future project planning. Onsite assessment followed the established criteria and methods as defined within the Corps of Engineers Wetlands Delineation Manual (1987 Manual), the Washington State Wetlands Identification and Delineation Manual (Wash. Manual), the Washington Department of Natural Resources (WDNR) Forest Practice Rules, and the City of Federal Way wetland and stream regulations. Dash Point State Park was established in 1962 and is located in Pierce and King Counties at 5700 SW Dash Point Road (SR509) in the City of -Federal Way, Washington (Figure 1). The park is approximately 400 acres in size and includes more than.3,300 linear feet of shoreline along Puget Sound. The park includes a group camp, campsites, picnic tables, fire pits, and more than seven (7) miles of trails for both day use and camping activities. BACKGROUND INFORMATION National Wetiand Inventory The National Wetland Inventory (NWI) mapping completed by the U.S. Fish and Wildlife Service was reviewed as a part of this assessment. This mapping resource identified a shoreline area contiguous with'Puget Sound in the northern portion of the project site (Figure 2). This onsite shoreline was defined as estuarine, intertidal, undonsolidated shore, regularly flooded (E2USN). This mapping resource further identified offsite wetlands to the east of the project site. These offsite wetlands were defined as palustrine, scrub -shrub, seasonally flooded (PSSC) and palustrine, emergent, semi permanently flooded (PEMF). wetlands, streams, fisheries, wildlife — mitigation and permitting solutions .� P.O. Box 1088, Puyallup, Washington 98371 Dash Point 05199 voice 253-845-5119 fax 253-841.1942 habitattech@tlwest.net State of Washington Priority Habitats and Species The State of Washington Priority Habitats and Species (PHS) Mapping was -reviewed as a part of this assessment. This mapping resource identified a number of priority habitats within and adjacent to the project site (Figure 3). These included a notation for a bald eagle (Haliaeetus leucocephalus) breeding area (#17, #19, #22, #23), a notation for urban natural open space along the shoreline of Puget Sound (#19, #22), and wetlands associated with a small independent tributary to Puget South (#22, #24). State of Washington Department of Fisheries Stream Mapping The State of Washington Department of Fisheries Stream Mapping was reviewed as a part of this assessment. This mapping resource identified an unnamed stream, which was an independent tributary to Puget Sound, generally through the central and western areas of the project site (Figure 4). This mapping resource further identified that this stream provides habitats for coho salmon (Oncorhynchus kisutch). King County Mapping The King County wetland and stream mapping was reviewed as a part of this assessment. This mapping resource identified a stream generally through the central and western portions of the project site (Figure 4A). The lower portion of this stream (from SR509 to Puget Sound) was identified as providing habitats for salmonid fish (genus Oncorhynchus). The upper portion of this stream was identified as "unclassified." Washington State Natural Heritage The Washington State Natural Heritage Program was reviewed as a part of this assessment. This resource failed to identify any high quality, undisturbed wetland or a wetland that supports state Threatened, Endangered, or Sensitive plant species within the Section/Township/Range of the project site. Soil Mapping The soil mapping provided by the Soil Conservation Service (now Natural Resource Conservation Service) was reviewed as a part of this assessment. This resource identified the soil throughout the majority of the project site as Alderwood gravelly loam (AgC). The Alderwood series is defined as moderately well drained, as formed in glacial till, and as not listed as "hydric." Additional soils noted within the project site included Indianola loamy fine sand (InC), Kitsap silt loam (KpC), Alderwood and Kitsap soil (AkF), and coastal beach (Cb). 2 Dash Point 05199 SITE ASSESSMENT Criteria for Wetland and Stream Identification Wetlands are transitional areas between aquatic and upland habitats. In general terms, wetlands are lands where the extent and duration of saturation with water is the primary factor determining the nature of soil development and the types of plant and animal communities living in the soil and on its surface (Cowardin, et al., 1979). Wetlands are generally defined within land use regulations as "areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions" (1987 Manual). Wetlands exhibit three essential characteristics, all of which must be present for an area to meet the established criteria within the Wash. Manual and the 1987 Manual. These essential characteristics are: 1. Hydrophytic Vegetation: A predominance of plants that are typically adapted for life in saturated soils. 2. Hydric Soil: A soil that is saturated, flooded, or ponded long enough during the growing season to develop anaerobic conditions in the upper horizons. 3. Wetland Hydrology: Permanent or periodic inundation, or soil saturation to the surface, at least seasonally. A stream is generally defined as a location where surface waters produce.a defined channel or bed. A defined channel or bed is typically an area which demonstrates clear evidence of the passage of water and includes, but not limited to, bedrock. channels, gravel beds, sand and silt beds, and defined channel swales. A stream need not contain water year-round. A stream typically does not include irrigation ditches, canals, storm or surface water run-off devices, or other artificial watercourses unless the constructed watercourse conveys a stream which naturally occurred prior to the construction of such watercourse. Field Observations Habitat Technologies completed a series of site visits during June 2005. The objective of this evaluation was to define and delineate potential wetlands and drainage corridors that may be present within or adjacent to the project -area. Boundaries between wetland and non -wetland areas were established by examining the transitional gradient between wetland criteria along a number of east to west transects through the site. Onsite activities were completed in accordance with criteria and procedures established in the 1987 Manual, the Wash. Manual, the City of'Federal Way wetland and stream regulations, and the WDNR Forest Practice Rules. Delineation was performed using the routine methodology for areas larger than five acres as detailed in the 1987 Manual. 3 Dash Point 05199 ■ Onsite Plant Communities The project site had undergone prior forest harvest activities and is presently managed as a state park. Ongoing management actions include maintained day use facilities, a mixture of maintained camping facilities, and a system of maintained internal trails. The project site was bounded by residential developments, public roadways, and Puget Sound. The majority of the project site'was dominated by a mature, second growth Douglas fir (Pseudotsciga menziesh) forest plant community. Additional tree species included Western red cedar (Thuja plicata), Western hemlock (Tsuga heterophylla), big leaf maple (Acer macrophyllum), red alder (Alnus rubra), black cottonwood (Populus trichocarpa), Pacific madrone (Arbutus menziesh), and cascara (Rhamnus purshiana). The understory was dominated by a wide variety of shrubs and herbs which included Himalayan blackberry (Rebus procera), evergreen blackberry (Rubus laciniatus), Pacific blackberry (Rubus ursinus), Scot's broom (Cytisus scoparius), rose (Rosa $pp.), Sitka willow (Salix sitchensis), Indian plum (Oemleria cerasiformis), vine maple (Acer circinatum), hazelnut (Corylus comuta), Oceanspray (Holodiscus discolor), salmonberry (Rubus spectabilis), Pacific red elderberry (Sambucus racemosa), red huckleberry (Vaccinium parvifolium), evergreen huckleberry (Vaccinium ovatum), snowberry (Symphoricarpus albus), Oregon grape (Berberis nervosa and Berberis aquifolium), salal (Gaultheria shallon), Pacific ninebark (Physocarpus capitatus), sword fern (Polystichum munitum), bracken fern (Pteridium aquilium), nettle (Urtica dioica), bleeding heart (Dicentra formosa), geranium (Geranium spp.), daisy (Bellis spp.), Canadian thistle (Cirsium arvensis), bull thistle (Cirsium vulgare), smooth cats ear (Hypochaeris glabra), hairy cats ear (Hypochaeris radicata), field mint (Mentha arvensis), plantain (Plantago major), buttercup (Ranunculus repens), sheep sorrel (Rumex acetosella), dandelion (Taraxacum officinale), clover (Trifolium spp.) and a variety of grasses. This plant community was identified as non-hydrophytic in character (i.e. typical of uplands). A shallow swale was present along the eastern boundary of the project site. The plant community within this shallow swale (noted as Wetland A below) exhibited a forest plant community more typically associated with damp to saturated soils. Observed species included red alder, black cottonwood, Pacific willow (Salix lasiandra), Sitka willow (Salix sitchensis), Oregon ash (Fraxinus latifolia), crabapple (Pyrus fusca), salmonberry, black twinberry (Lonicera involucrata), Pacific ninebark (Physocarpus capitatus), Douglas spiraea (Spiraea douglash), Nootka rose (Rosa nutkana), reed canarygrass (Phalaris arundinacea), softrush (Juncos effusus), common lady fern (Athyrium filix-femina), slough sedge (Carex obnupta), beaked sedge (Carex rostrata), skunk cabbage (Lysichitum americanum), water parsley (Oenanthe sarmentosa), speedwell (Veronica scutellata), buttercup (Ranunculus repens), and curled dock (Rumex crispus). This plant community was identified as hydrophytic in character (i.e. typical of wetlands). This plant community appeared to extend offsite to the north and offsite to the south. 4 Dash Point 05199 The plant community within a swale complex located within the central portion of the project site (noted as Wetland Complex B below) also exhibited a forest plant community more typically associated with damp to saturated soils. Observed species included red alder, black cottonwood, Pacific willow, Sitka willow, Oregon ash, crabapple, salmonberry, black twinberry, Pacific ninebark, Douglas spiraea, Nootka rose, reed canarygrass, softrush, common lady fern, slough sedge, beaked sedge, skunk cabbage, water parsley, speedwell, buttercup, and curled dock. This plant community was identified as hydrophytic in character (i.e. typical of wetlands). This plant community generally followed a seasonal drainage corridor and appeared as the headwaters of a perennial stream eventually entering Puget Sound. This plant community was also present along the perennial stream corridor both upstream and downstream of the SR509 Bridge. • Onsite Soils and Hydrology Patterns As documented at sample plots the majority of the project site was dominated by soil that exhibited a silt loam to loam texture and coloration typical of the Alderwood and Kitsap soil series. A surface duff layer to a depth of three to four inches was common throughout the project site. The surface soil to a depth of approximately 12 inches was generally very dark gray to dark brown (10YR 3/2 to 10YR 3/3) gravelly loam. The subsurface soil was generally brown (10YR 3/3 to 10YR 4/4) gravelly loam. The soil did not exhibit prominent redoximorphic features and appeared to drain moderately well to well. This soil did not exhibited field characteristics typical of hydric soil. The soil within the eastern swale (noted as Wetland A below), the central swale (noted as Wetland B below), and along the downstream portion of the onsite perennial stream exhibited a high organic content within the surface layer and a general texture of gravelly silty loam. The surface soil to a depth of approximately 12 to 16 inches was black (10YR 2/1) to very dark gray (10YR 3/2). The subsurface soil to a depth of approximately 24 inches was gray (10YR 4/1 to 10YR 5/2). The subsoil exhibited prominent redoximorphic features (i.e. soil mottles) and oxidized root channels. The soil within these areas exhibited field characteristics typical of hydric soil. Onsite hydrology appeared to be the result of seasonal stormwater runoff from onsite, runoff from adjacent properties, roadside ditches and stormwater facilities, hillside seeps, and soil characteristics. The majority of the project site appeared to drain moderately well to well and did not exhibit field indicators of wetland hydrology or the concentrated movement of seasonal surface water runoff. The swale along the eastern edge of the project site (noted as Wetland A below) originated within a created stormwater facility directly south of the project site. This facility released seasonal stormwater runoff via a culvert at the southern project boundary which continued to the north through the project site. A fill pad associated with a central internal road/trail created a berm to the movement of seasonal surface water and was ditched to control surface water movement. Seasonal water movement continued offsite to the north and appeared to eventually enter a created stormwater conveyance system. This area was 5 Dash Point05199 identified to pond seasonal surface water into the first part of the growing season and to remained saturated at or near the surface through the majority of the growing season. Hydrology patterns within the central portion of the project site appeared to follow a series of shallow depressions and hillside topography generally to the west (noted as Wetland B below). This series of shallow depressions was identified as the headwaters of a perennial stream that generally flowed to the northwest through the western portion of the project site. This area was identified to pond seasonal surface water into the first part of the growing season and to remained saturated at or near the surface through the majority of the growing season. A series of small seasonal streams and hillside seeps was also identified to enter the perennial stream that generally flowed to the northwest through the western portion of the project site. These small seasonal streams and hillside seeps general entered from the south and appeared to augment instream flows within the perennial stream. • Onsite and Offsite Fish and Wildlife Based on the plant communities, directly observations, and prior observations within the area of the project site avian species that were observed - or that would be expected within the project site - included barn swallow (Hirundo rustica), tree swallow (Tachycineta bicolor), violet green swallow (Tachycineta thallassina), bald eagle (Haliaeetus leucocephalus), song sparrow (Melospiza melodia), American crow (Corvus brachynchos), common raven (Corvus coraw), American robin (Turdus migratodus), dark eyed junco (Junco hyemalis), Stealer's jay (Cyanocitta stellerr), starling (Stumus vulgaris), band -tailed pigeon (Columba fasciata), mourning dove (Zenaida macroura), rock dove (Columbia Livia), black capped chickadee. (Parus atricapillus), Northern flicker (Colaptes auratus), downy woodpecker (Picoides pubescens), hairy woodpecker (Picoides villosus), pileated woodpecker (Dryocopus pileatus), marsh wren (Cistothorus platensis), red tailed hawk (Buteo jamaicensis), rough -legged hawk (Buteo lagopus), merlin (Falco columbarius), great horned owl (Bubo virginianus), Western screech owl (Otus kennicottr), great blue heron (Ardea herodias), California quail (Callipepla califomica), ruffed grouse (Bonasa embellus), American goldfinch (Carduelis tristis), rufous hummingbird (Selasphorus rufus), American dipper (Cinclus mexicanus), chestnut backed chickadee (Parus rufescens), red breasted nuthatch (Sitta canadensis), and golden crowned kinglet (Regulus satraps). The majority of these avian species would be expected to feed, nest, rear, and seek cover throughout the varying plant communities within and adjacent to the project site. The majority of avian activities were noted along the habitat edges formed between the onsite plant communities, along the unnamed stream corridor in the central and western portions of the project site, along the internal campgrounds and day use facilities, and adjacent to the offsite residental communities. This list of avian species does not include those_ species that may be present along the shoreline of Puget Sound. 6 Dash point 05199 i Mammal species observed (directly or indirectly) - or expected within the project site - included black tailed deer (Odocoileus hemionus), coyote (Canis latrans), raccoon (Procyon lotor), striped skunk (Mephitis mephitis), opossum (Didelphis virginianus), longtail weasel (Mustela frenata), mountain beaver (Aplodontia rufa), Douglas squirrel (Tamiasciurus douglash), eastern gray squirrel (Sciurus carolinensis), Norway rat (Rattus norvegicus), eastern cottontail (Sylvilegus floridanus), deer mouse (Peromyscus maniculatus), shrew (Sorex spp.), vole (Microtus spp.), Townsend mole (Scapanus townsendii), Townsend Chipmunk (Eutamias townsendi), and bats (Myotis spp.). The project site would also provide'habitats for common garter snake (Thamnophis sirtalis), Pacific treefrog (Hyla regilla), red -legged frog (Rana aurora), roughskinned newt (Taricha granulosa), and northwestern salamander (Am,bystoma gracile). Onsite assessment did not undertake a direct capture of fish species within the unnamed stream along the central and western portions of the project site. This stream was noted as a tributary to Puget Sound and is defined by WDFW to provide habitats for anadromous fish species. Assessment of this stream corridor identified that there were no barriers to the movement of anadromous or resident fish species between the lower portions of the area identified as Wetland Complex B and Puget Sound. In addition to coho salmon, other fish species which may be present within the stream include chum salmon (Oncorhynchus keta), rainbow/steelhead trout (Oncorhynchus mykiss), cutthroat trout (Oncorhynchus clarkii), and sculpins (Cottus spp.). However, as defined onsite the culvert associated with the roadway crossing appeared to create a blockage to the upstream movement of fish. • Fish and Wildlife Movement Corridors The project site displayed numerous movement corridors for small, medium, and large mammals. A number of well -used wildlife trails were identified within the project site. In addition, the stream corridors along the central and western portions of the project site provide a movement corridor for aquatic and terrestrial species. • State Priority Species A variety of species identified by the State of Washington as "Priority Species" were observed onsite or potentially may utilize the project site. The majority of these species are identified as "game species" and are regulated by the State of Washington through recreational hunting bag limits, harvest seasons, and harvest area restrictions. These species include black tailed deer, coyote, band4ailed pigeon, California quail, ruffed grouse, mourning dove, coho salmon, chum salmon, rainbow/steelhead trout, and cutthroat trout. A few "State Candidate" or "State Monitored" species were observed, or potentially could utilize the project site. State Candidate species are presently under review by the State of Washington Department of Fish and Wildlife (WDFW) for possible listing as endangered, threatened, or sensitive. A single State Candidate species - pileated 7 Dash Point 05199 woodpecker — was noted feeding generally along the stream and wetland areas throughout the project site. State Monitored species that are native to Washington but require habitat that has limited availability, are indicators of environmental quality, require further assessment, have unresolved taxonomy, may be competing with other species of concern, or have significant popular appeal. A single State Monitored species - great blue heron — may potentially utilize the shallow depression in the eastern edge of the project site for limited feeding. No nesting areas were observed onsite or within the adjacent vicinity for this species. Federally Listed Species A single Federal listed threatened species — bald eagle — along with critical habitats for this listed species has been documented along the shoreline of Puget Sound. FINDINGS A number of areas were identified within the project site to exhibit all three criteria for designation as "wetland." In addition, a number of areas were also identified to exhibit characteristics typically associated with a "stream" (Figure 6). WETLAND I' CLASSIFICATION I USFWS CITY OF FUNCTION AND FEDERAL WAY VALUE RATING STANDARD BUFFER WIDTH A PFOC 2 Moderate 100 feet Complex B PFOCh 2 High 100 feet Wetland A: Wetland A was located within a topographic swale along the eastern edge of the project site. This wetland was dominated by a forested plant community onsite_ This wetland originated within a regional stormwater facility directly to the south and continued offsite to the north of the project site. Surface water within this wetland appeared to eventually enter of created stormwater system offsite to the north of the project site. Wetland A exhibited areas of seasonal ponding well into the growing season and appeared to remain saturated at or near the surface throughout the growing season. Wetland A met the U.S. Fish and Wildlife Service (USFWS) criteria for classification as palustrine, forested, seasonally flooded, impounded (PFOCh). Because of its forested character and total size greater than one acre, Wetland A was identified to meet the criteria for designation as a City of Federal Way Category 2 Wetland. 8 Dash Point 05199 Wetland Complex B: Wetland Complex B was located within a -topographic swale within the central portion of the project site. This wetland complex was dominated by a forested plant community. This wetland complex originated within a shallow depression in the north central portion of the project site and included four (4) well defined depressions connected by seasonal surface water within a shallow swale. Wetland Complex B was identified as the headwaters for a perennial stream that originated within this wetland and continued generally to the northwest eventually entering Puget Sound. Wetland exhibited areas of seasonal ponding well into the growing season and appeared to remain saturated at or near the surface throughout the growing season. Wetland Complex B met the USFWS criteria for classification as palustrine, forested, seasonally flooded (PFOC). Because of its forested character and total size greater than one acre, Wetland Complex B was identified to meet the criteria for designation as a City of Federal Way Category 2 Wetland. Other Wetlands: A wetland area was also identified along the lower portion of the perennial stream (upstream and downstream of the Dash Point Road crossing) noted to originate within Wetland Complex B and to continue to generally to the northwest. This wetland area included a variety of hillside seeps, stream overflow areas, seasonal floodplain areas, and small stream inflows. This wetland area was dominated by a forested plant community. This Wetland area met the USFWS criteria for classification as palustrine, forested, seasonally flooded (PFOC). Because of its forested character and total size greater than one acre, this wetland area was identified to meet the criteria for designation as a City of Federal Way Category 2 Wetland. Onsite Streams: A perennial stream was identified to originate within the lower portion of Wetland Complex B and to flow generally to the northwest eventually entering Puget Sound. This stream did not exhibit any complete barriers to the movement of anadromous or resident fish between the lower portion of Wetland Complex B and Puget Sound. This stream also exhibited -suitable areas for the spawning and rearing of coho salmon, chum salmon, rainbow/steelhead trout, and cutthroat trout. This stream appeared to meet the criteria for designation as a WDNR Type F Stream and the City of Federal Way criteria for designation as a "Major Stream." A number of additional streams were also identified to enter the perennial stream originating within the lower portion of Wetland Complex B primarily from the forested areas to the south of this perennial stream. A few of these small streams appeared perennial in flow character and appeared to provide suitable habitats for fish, at least seasonally. The majority of these streams appeared to meet the City of Federal Way criteria for designation as a "Major Stream." 9 Dash Point05199 REGULATORY CONSIDERATION The proposed alteration of lands defined by various federal, state, and local authority rules and regulations as "wetlands" raises environmental concerns that are generally addressed in the development review process. These concerns center on the development's potential adverse impacts to the structure, function, value, and size of these "wetland" areas. Such adverse impacts may include: a reduction in wildlife habitats, reduced surface water quality, reduced water retention, a reduced ground water recharge rate, reduced plant species diversity, and the reduction in the function and value of other associated wetland and non -wetland characteristics. U.S. Army Corps of Engineers - Section 404 Section 404 of the Clean Water Act (33 U.S.C. 1344) prohibits the discharge of dredged or fill material into "Waters of the United States" without a permit from the Corps of Engineers (Corps). The Corps has jurisdiction over freshwater systems waterward from the ordinary high water line of a water body or waterward from the upland boundary of the adjacent wetland. The definition of fill materials includes the replacement of aquatic areas with dry land, grading which changes the surface contour of a wetland, and mechanized land clearing in wetlands. For the purposes of Section 404 permitting the Corps makes the final determination as to whether an area meets the wetland definition and would be subject to regulation under the Corps program. Applications to the Corps for permitting actions must follow the 1987 Manual wetland delineation format. Currently the Corps has two. specific types of permits which apply to wetland fill proposals. These two types are a series of specific Nationwide Permits and the Individual Permit. The Nationwide Permit process identifies specific categories of work that can be undertaken following a set of specific conditions applicable to each Nationwide Permit number. The Corps requires an Individual Permit where a proposed activities within an identified jurisdictional wetland area can not be authorized under one of the Nationwide Permits. Within the Individual Permit process the Corps undertakes a much more in- depth review of the proposed project and the proposed impacts. The Corps must evaluate whether the benefits derived from the project outweigh the foreseeable environmental impacts of the project's completion: Ail projects that proceed forward using either one -of the Nationwide Permits or the Individual Permit process must also comply with the provisions of the Endangered Species Act. As defined by a recent U.S. Supreme Court decisions the Corps of Engineers does not typically regulated "isolated" wetlands pursuant to Section 404 of the Clean Water Act. Under this decision "isolated" wetlands do not exhibit a continuous surface water connection to other, downstream aquatic system. 10 Dash Point 05199 State of Washington Department of Ecology Proposed action undertaken through either of the Corps of Engineers processes (Nationwide, Individual, or isolated) are also subject to the provisions of the Washington State. Department of Ecology Water Quality Certification Process. Projects that may be exempt from Corps of Engineers Section 404 jurisdiction may still require review by the Washington State Department of Ecology to ensure consistency with State water quality protection provisions. State of Washington Department of Fish and Wildlife Proposed action undertaken within the ordinary high water mark of a stream requires review and potential permitting through the WDFW via the hydraulic permit approval (HPA) process. Such permitting requires the submittal of a permit application and associated project plans to the WDFW Regional Biologist. City of Federal Way Wetland and Stream Regulations This City of Federal Way regulates activities in and around sensitive wetland and stream areas. Category 1 Wetlands meet one of the following criteria: a. Contain the presence of species or documented habitat recognized by state or federal agencies as endangered, threatened or potentially extirpated plant, fish or animal species; or b. Contain the presence of plant associations of infrequent occurrence, irreplaceable ecological functions, or exceptional local significance including but not limited to estuarine systems, peat bogs and fens, mature forested wetlands, groundwater exchange areas, significant habitat or unique educational sites; or c. Have three or more wetland classes, one of which is open water. Category 2 Wetlands are greater than 2,500 square feet in area, do not exhibit the characteristics of Category 1 wetlands, and meet one of the following criteria: a. Are contiguous with water bodies or tributaries to water bodies which under normal circumstances contain or support a fish population, including streams w.here..flow is intermittent; or b. Are greater than one acre in size in its entirety; or c. Are less than or equal to one acre in size in its entirety and have two or -more wetland classes, with neither class dominated by non-native invasive species. Category 3 Wetlands are greater than 2,500 square feet in area and do not exhibit those characteristics of Category 1 or 2 wetlands. 11 Dash Point 05199 Major stream means any stream, and the tributaries'to any stream, which contains or supports, or under normal circumstances contains or supports, resident or migratory, fish. If there exists a natural permanent blockage on the stream course which precludes the upstream movement of anadromous salmonid fish, then that portion of the stream which is downstream of the natural permanent blockage shall be regulated as a major stream. Minor stream means any stream that does not meet the definition of "major stream." WETLAND OR STREAM tegoory 1 Wetland tegmy 2 Wetland tegory 3 Wetland Major Stream Minor Stream STANDARD CITY OF FEDERAL WAY PROTECTIVE BUFFER WIDTH 200 feet 100 feet 50 feet 100 feet 50 feet The protective buffer is measured perpendicular from the identified wetland boundary or from the ordinary high water mark of a stream. Thank you for allowing Habitat Technologies the opportunity to assist with your project requirements. Please contact me with any questions or wish to visit to discuss site development alternatives and the potential impacts of regulated wetland and stream areas. Sincerely, Thomas D. Deming 12 Dash Point 05199 FIGURES 13 Dash Point 05199 HABITAT Figure 7 TECHNOLOGIES Site Vicinity ono E 2US N. .. ........ ': \J A HABITAT -TECHNOLOGIES f. 4 6 r Figure 2 NWI Resource Mapping- 4 t� i HABITAT TECHNOLOGIES Legend y Selected Stream PLSS Townships WATERSCDIM PLSSSectlons (124.000) CITIES COUNTY e Major Cities Cities Towns RIVERS (1:24,000) ONR Tmna,24k N Paved Road Y; Unpaved Road ;,�aad Surface nknown Trail Railroad ACandoned/Orp- harr Figure 14 WDFW Stream dapping I I Al aoro s c aty r� Legend ` « county Boundary l� SAD-51raam 5kf8afs �31 ���ztY /{} £iass2SmYnaR�1 Partials � il�ae�s"vl d Labaa and LaMe 4 umm �qf stmam r:r SAOMieifaild HABITAT Figure 4A TECHNOLOGIES King County Mapping 4 77/ 1 0 BOUNDXR�Y i IL R. 1J, H, n. nm tv, HABITAT Figure 5 TECHNOLOGIES Solt Mapping GENERAL FIELD MAPPING — NOT FROM SURVEY PUGET SOUND day use area NTS t park boundary e p u� V TYP ',F STRCA � WE'TLAND �. COMPLEX ,B y �' i WETLAND A teglowil stQfmwoier pond � 1 � HABITAT TECHNOLOGIES Figure 6 -- Dash Point State Park GENERAL SITE DESCRIPTION REFERENCE LIST Adamus, P.R., E.J. Clairain Jr., R.D. Smith, and R.E. Young. 1987. Wetland Evaluation. Technique (WET); Volume II: Methodology, Operational Draft Technical Report Y-87, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Cowardin, L.M., V. Carter, F.C: Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. Office of Biological Services, U.S. Fish and Wildlife Service, U.S. Department of the Interior, FWS/OBS-79/31. Environmental Laboratory. 1987. "Corps of Engineers Wetlands Delineation Manual," Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Miss. Hitchcock, C.L., A. Cronquist. 1977. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Reppert, R.T., W. Sigleo, E. Stakhiv, L. Messman, and C. Meyers. 1979. Wetland Values - Concepts and Methods for Wetland Evaluation. Research Report 79-R1, U.S. Army Corps of Engineers, Institute for Water Resources, Fort Belvoir, Virginia. U.S. Department of Agriculture, Soils Conservation Service. Soils Survey of Thurston County Area Washington. Washington State Department of Ecology. 1997. Washington State Wetlands Identification and Delineation Manual. Publication Number 96-94. Washington State Department of Fisheries, Catalog of Washington Streams and Salmon Utilization, Volume 1., 1975. 14 Dash Point 05199 a 5-rnr� Rex Derr w� s' Director STATE OF WASHINGTON WASHINGTON STATE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT OFFICE 2840 Riverwalk Drive SE • Auburn, Washington 98002 • Phone: (253) 931-3904 • Fax: (253) 931-3921 April 27, 2007 David Lee, Associate Planner City of Federal Way 33325 8"' Avenue South P.O. Box 9718 Federal Way, WA 98063-9718 N APR 2 7 2007 CITY OF FEDERAL WAY BUILDING DEPT. RE: Resubmittal Information, City of Federal Way Process III Review Application, File #06- 105996-00-UP, Dash Point State Parks Sewer Improvements, 5700 SW Dash Point Rd Dear Mr. Lee: Please find attached the State Parks reubmittal providing you the "additional information requested", which we believe meets your needs. If you have any questions or other needs please do not hesitate to call me immediately. As previously stated, State Parks has determined for various business needs, that this project start the public works bidding process in June of this year, with construction to follow as soon as possible. State Parks greatly appreciates your efforts in keeping this project moving and recognition of our project schedule. Sincerely, � vl- Q Ll Jr-Sohn Zinza, PE Environmental Engineer WA State Parks, Puget Sound Parks Development JMZ Attachments: State Parks April 4, 2007, Letter Response to Mr. Lee (2 copies) Minutes from April 27, 2007, meeting w/Mr. Lee (2 copies) Addendum to DNS, Impact Analysis "Additional Wetland Assessment Information" (2 copies) Revised Site Improvement Plans — Preliminary (5 copies, 11 x 17) cc: Les Kniffen, WA State Parks, Environmental Specialist .140z— Q _)ASHINGTON STATE PARKS AN.�10ECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT SERVICE CENTER RESUBMrTTED 2840 RI ERWALK DRIVE AUBURN, WASSOUTHEAST WASHINGTON 9 002 APR 2 12907 CITY GILD NG p WAY BU LETTER OF TRANSMITTAL PHONE: (253) 931-3904 FAX: (253) 931-3921 TO: City of Federal Way, Washington DATE: 4/27/07 ATTN: Mr. David Lee, Associate Planner FROM: John Zinza, PE, Environmental Engineer Phone: 253-288-2576 RE: Resubmittal in reply to March 22, 2007, letter from David Lee, City of Federal Way, to Les Kniffen, Washington State Parks "Additional Information Requested" City of Federal Way Reference "File #06-105996-00-UP COPIES DESCRIPTION 2 State Parks April 4, 2007, Letter Response to City of Federal Way regarding "Additional Information Requested" 2 Minutes from April 16, 2007, meeting with David Lee, City of Federal Way, and Washington State Parks staff, regarding Mr. Lee's March 22, 2007, letter. 2 Addendum to Detennination of Non -Significance. Impact Analysis "Additional Wetland Assessment Information" 5 Revised Site Improvement Plan (Preliminary, 94 sheets, half size in 11x17 fonnat) RECEIVED BY: TITLE/PHONE : SIGNATURE: cc: Les Kniffen, WA State Parks, Environmental Specialist WA State Parks, Project File a Rex Derr i x Director STATE OF WASHINGTON WASHINGTON STAVE PARKS AND RECREATION COMMISSION PUGET SOUND PARKS DEVELOPMENT OFFICE 2840 Riverwalk Drive SE • Auburn, Washington 98002 ® Phone: (253) 931-3904 . Fax:Atd3 �WITT'ED ADDENDUM TO DETERMINATIONS OF NON -SIGNIFICANCE (DNS) COMMENT PERIOD ENDING AUGUST 7. 2007 FOR DASH POINT STATE PARK - SEWER Responsible Official Leslie C. Kniffen Puget Sound Region Environmental Specialist Phone (253) 288-2566 FAX (253) 931-3963 Les.Kniffen@parsk.wa.gov APR 2 7 2007 WAY BUILDING DEPOF FEDERALT. Address Washington State Parks and Recreation Commission Puget Sound Region Parks Development Center 2840 Riverwalk Dr. SE Auburn, Washington 98002 Date April 26, 2007 Signature THE FOLLOWING ARE MODIFICATIONS TO THE DN SUED COMMENT PERIOD ENDING AUGUST 7, 2006. IMPACT ANALYSIS The following analysis is supplemental to Habitat Technologies' Wetland and Stream Assessment Letter Report, June 30, 2005, and is made an addendum to the SEPA Determination of Non -Significance comment period ending August 7, 2006 and Addendum of February 23, 2007 1. Summary and Background 1.1. Dash Point State Park's initial land purchase by the state of Washington occurred in 1940. The park was dedicated in 1962. The park is now surrounded on three sides by residential developments and on the fourth by Puget Sound. The park is a biological island and an important refuge for fauna and flora. 0 Addendum to SEPA DNS ' ment period ending August 7, 2006 Page 2 of 10 Amendment to Habitat Teu. fogies Letter Report of June 30, 2005 In 2003, State Parks received funding in the Governor's Budget to consolidate the park's many separate onsite sewage systems into a single collection system and to convey that sewage to the Lakehaven Utility District for treatment and disposal. Thames Creek and its associated wetlands dissect the entire park. To provide a comprehensive sewage service that is efficient, economical, and technically feasible State Parks has designed a system that has made five intrusions into identified critical area buffers to reach the parks assigned sewer stub location. The buffer intrusions are associated with wetlands (Complex B and C), Thames Creek, and an eagle nest management zone. State Parks has avoided intruding into the critical areas proper. In all five instances, existing park facilities or the city's roads already intrude upon the buffers. See Figure 1 for an identification of each intrusion mentioned in this report. 4.6 acres will be disturbed in order to achieve State Parks goal. When the project is finished all but the site of the new main pump station and its access road will be replanted to native vegetation. All wetland buffers will be planted as shown n the plans. 2. Dash Point State Park's Current Condition 2.1. Dash Point State Park is approximately 421 acres of second growth forest, wetland, riparian and shoreline environment. Virtually, all the parks development is north of Thames Creek and its associated wetlands. Of the 153 acres north of Thames Creek, approximately 32 acres are developed as day use, campground, staff residences, a shop/office complex, roadways, and the Dash Point Road (SR 509). Thames Creek, its tributaries, and associated wetlands dissect the park to within 97 feet of the park boundary at the asphalt road edge along SW 320`h between 53rd Ave. and 55th Ave SW in Federal Way, Washington. This habitat is fragmented and is of lesser quality than the portion of the park on the south side of Thames Creek. This is due to the continuous pressure from presences of park patrons, noise from their vehicles that traverse the park and those that travel the Dash Point Road (SR 509). The portion south and east of Thames Creek (the larger portion of the park, 268 acres) is relatively free of recent disturbance and has no formal development other than hiking/biking trails and associated footbridges. It is composed of second growth forest, wetland, and riparian habitats. It is better habitat as it is less fragmented and has less human intrusion then the developed portion of the park. The wetlands, streams, and associated fauna and flora are fairly characterized in Habitat Technologies' Wetland and Stream Assessment Letter Report, June 30, 2005. Addendum to SEPA DNS , - `jment period ending August 7, 2006 Page 3 of 10 Amendment to Habitat Ter. Aogies Letter Report of June 30, 2005 3. Thames Creek Intrusion 3.1. Intrusion This intrusion is at a location that is totally developed. It is the site of the Beach Comfort Station, associated pump station, and lawn. It is within 100 feet of Thames Creek, it also lies within 200 feet of Puget Sound, a "State Significant" water body. All the work associated with this location is maintenance and is Shoreline Exempt, under the Federal Way Shoreline Master Program. The Erosion and Sediment Control Plan (ESC Plan) will prevent and control any prospective impacts to the steam or the shoreline of Puget Sound from sediment during construction. The addition of 120 square feet of concrete pad (impermeable surface) for the new pump controls will make a negligible increase in runoff during precipitation events. With the exception of the new concrete pad, the site will be returned to it original condition, i.e., building and turf grass. This portion of the project could stand- alone as the next closest activity is approximately 1500 feet away and out of the shoreline jurisdiction. / 3.2. Impacts 3.2.1. Impacts to salmonids — none 3.2.2. Impacts to birds — minor, confined to noise disturbance that will occur outside of nesting season. It is highly unlikely this area is used for any nesting as it is heavily impacted by park patrons and their pets at all times of the year. 3.2.3. Impacts to neighbor properties — none 4. Eagle Nest Management Zone Intrusion 4.1. Intrusion State Parks needs to create a sewer utility corridor 8075 feet in length. State Parks will harvest 320 merchantable tree stems larger then 8 inches diameter, approximate 67,000 board feet. State Parks will harvest approximately 10 tree stems within 800 feet of the nest, approximately 50 within a one -quarter mile of the nest, and approximately 230 within one-half mile of the nest. The tree harvest is depicted in plan sheets C-2 to C-6. This activity is regulated by the Department of Natural Resource and a Class IV — Special, Forest Practices Permit is required. The Forest Practices Rules regulate harvest within'/4 or'/z mile of an eagle nest depending upon the time of year for the' harvest. State Parks" work approaches to within 700 feet of a nest. State Parks will work with the Washington Department of Fish and Wildlife (WDFW) to develop an Eagle Management Plan required as a condition of the Class IV — Special, Forest Practices Permit and will abide by all its conditions in order to reduce or negate impacts to the eagle nest. It should be noted, the eagles that use the park appear to have habituated to humans. Evidence of this is their continuous use of the nest through the years despite park patrons walking within 100 feet (i.e. beach walks) of the Addendum to SEPA DNS ' ment period ending August 7, 2006 ~ Page 4 of 10 Amendment to Habilat Tec uiogies Letter Report of June 30, 2005 nest, park patrons routinely driving vehicles in the park near the nest, and park staff conducting maintenance activities all within the 800 feet of the nest. The parks' existing septic disposal field is approximately 500 feet of the nest. The most critical time for eagles is during the nesting season. The Forest Practice Rules identify January 1 until August 15 as the nesting season. State Parks harvest will be in accordance with the provisions outlined in the parks' individual Eagle Management Plan. WDFW provides the following general guidance, Feb 1 - May 1, more sensitive; May 1-July 1, less sensitive; July 1-July 15, more sensitive; July 15 - Jan 31, least sensitive, (http://wdfw.wa.gov/wlm/diversty/soc/baideg_qje/-baldeagle m nt fa s. df). State Parks will schedule any harvest activity to occur as prescribed in the Eagle Management Plan All timber harvest and construction activity is confined to a 20 to 25 feet wide corridor with a few exceptions, in many cases it parallels or is in the corridor of existing roadways and trails. The corridor, where it is not an existing roadway or trail, will be replanted to native species. A visual inspection on April 19, 2007 failed to locate the eagle nest: However, eagles were sighted and vocalization between eagles was heard. The nest appears to be beyond the line of sight of State Parks' new construction. WDFW's Priority Habitats and Species Data overlain on the Tacoma North, USGS topographic map using ArcMap indicates the nest location is at about the 40 feet elevation contour (the nest would be higher), the ridge top ascends to about 225 feet. State Parks' harvest and construction corridor begins on the opposite slope starting at about the 215 feet contour. This would further negate the development's impacts. A perch tree approximately 100 feet from the existing septic disposal field was located. This field will be decommissioned once the new system is built and running in January. The perch tree is approximately 200 feet from the beginning of the harvest and new construction corridor. After the fledglings have fledged it is likely that the adults will simply move to a new perch location until the construction is less bothersome. By starting construction in the midsummer, the eagles and their young will have had half of a recreation season to acclimatize themselves to human disturbance. 4.2. Impacts 4.2.1. Impacts to Eagle Nest Management Zone — minor State Parks will harvest approximately 10 tree stems within the eagle management zone (800 feet from the nest), and approximately 50 tree stems out to one -quarter mile of the nest. This harvest is a narrow and linear. It is not a clear-cut. There will be temporary construction noise and potentially dust. Dust will be controlled by the ESC Plan and noise will be confined to allowable hours as specified in the City of Federal Ways Ordinances. These impacts conducted after any fledglings fledge Addendum to SEPA DNS'^-`,.ment period ending August 7, 2006 Page 5 of 10 Amendment to Habitat Tec ,ologies Letter Report of June 30, 2005 should not negatively affect nesting success. Some adult birds may choose alternate perch locations during construction. This intrusion is not likely to jeopardize any eagles. 5. Wetland Buffers 5.1. Wetland Buffer Functions General Discussion (Sheldon et al. 2005) Wetland buffers function to protect the wetland like a pretreatment system for stormwater, and to provide habitat and habitat protection to species that are obligate to a wetland for some portion of their life. Physically, buffers provide shade and water temperature mediation for forested wetlands, but not necessarily for open wetlands. Further, they act as sediment traps for suspended solids, and nutrient traps for suspended or soluble nutrient. However, nutrient contribution is principally a function of cultural land use practices associated with phosphorous and nitrates use in fertilizers or pesticides. State Parks typically does not use fertilizers, and pesticides are applied sparingly to control unsightly growth around signposts and other structures that cannot be reached with mowers. State Parks principally uses Glyphosate, an organophosphate that binds tightly to soil, or if unbound degrades to carbon dioxide very rapidly (http://www.pan- uk.org/pestnews/-actives/giviphosa.htm ). It has not been shown that buffers regulate the hydroperiod of a wetland. Buffers do function to control and mediate the flow of water and materials into wetlands. The duff, downed woody material, and vegetation serve to slow the water flow and prevent the formation of rivulets and channels that would pickup and transport material. Biologically, wetland buffers provide a visual or noise screen for wetlands habitats. Further, there is a greater diversity or richness of species associated with the ecotone as the vegetative community grades from wetland to upland. Wetland buffers also serve to maintain connectivity and corridors between wetlands and other habitats for the movement of fauna. Species that are most likely to be obligate to wetlands and benefit from wetland buffers would be birds particularly waterfowl and herons, amphibians and reptiles (frogs, turtles, salamanders and newts), small semi -aquatic mammals (beaver, muskrat etc.), and potentially, salmonids that may enter the wetland (Intrusion 2 Wetland Complex B). Large mammals have larger home ranges and are less dependent on wetlands. Chris Anderson from WDFW, advised that herons are not known to nest in the park (personal communication, March 30, 2007) 5.2. Minimization Measures The merchantable timber in the sewer utility corridor will be harvested during the dry season. The slash will be chipped and spread as mulch to protect the soil from equipment impacts and erosion. An ESC Plan with slit fences and other approved best management practices will be implemented. Top soil will be sidecast into one row and mineral soil will be sidecast on the opposite Addendum to SEPA DNS , .,iment period ending August 7, 2006 Page 6 of 10 Amendment to Habitat Technologies Letter Report of June 30, 2005 side. Once the sewer lines are laid and the work is finished, the soils will be replaced in the trench in the appropriate order, the mulch will be re -spread, and native planting will be undertaken as shown in the plans. The mulch will serve to preserve sheet flow downslope and to prevent the formation of rivulets and erosive channels. It will also act as a trap for moving sediments and nutrients (see later discussion). 5.3. Wetland Buffer Intrusions 5.3.1. Intrusion Site 1 - Wetland Complex C's Buffer Wetland C is a small open wetland. Its central core is almost exclusively occupied by invasive flora. It originates at a culvert that crosses the lower camp loop road north of campsite 22 and its outlet is to a small tributary of Thames Creek. This tributary traverses a very steep slope believed to be impassable to salmonids. The existing lower camp loop, lawfully constructed, intrudes to the edge of the wetland on its most southwestern point. The Hanukkah Eve Windstorm of December 2006 blew over much of the standing timber within the buffer on this north and northeast corner where State Parks' intrusion would have the most impact (see photograph). Much of the timber harvest required in this portion of the corridor and around the main pump station is now a salvage removal. Few of the trees still stand. The habitat in this portion of the park is extremely fragmented by camp roads, campsites, and year-round human occupancy. Further, approximately 500 feet to the north is the Dash Point Road (SR 509) that further contributes to the habitat fragmentation and degradation. The west, south, and southeast buffers are intact, save for a single pedestrian trail that traverses the buffer. The less disturbed portion of the park associated with these buffers continues 1,100 feet to the west, to between 1,200 and 3,800 feet to the south and southeast and 800 feet to the east. There are no proposed developments within these buffers. This wetland maintains its connectivity via these buffers with the riparian lowlands, terrestrial uplands, and estuarine/marine habitats This buffer intrusion will consist of the construction of a pump station, control panel, auxiliary propane powered electrical generator, an access road and appurtenant electricity. This is the most extensive of all the parks' facilities within a wetland buffer. There is no other location available for the pump station that meets the engineering requirements and that has less impact on critical areas or their buffers. All disturbed areas outside the required road corridor and constructed facilities will be mulched and replanted with native plants as shown in the plans. The access road surface will be a structurally supported grass surface. This will maintain a vegetated turf strip to maintain sheet flow, permeability, and sediment filtration. Addendum to SEPA DNS iment period ending August 7, 2005 �; Page 7 of 10 Amendment to Habitat Tec .. ,ologies Letter Report of June 30, 2005 5.3.2. Intrusion Site 2 - Wetland Complex B's Buffer Wetland B is greater than five acres in size and lies south and west of the upper camp loop. The existing upper camp loop, lawfully constructed, already intrudes into the buffer. The proposed sewer alignment skirts between the backsides of campsites 64, 70, 72, and 73 and the wetland. Much of the standing timber in this location was severely damaged and killed in an ice storm in 1996. More timber was windthrown in the Hanukkah Eve Windstorm of December 2006. The habitat in this portion of the park is extremely fragmented by camp roads, campsites, pedestrian travel, and human occupancy from Memorial Day to Labor Day. It is doubtful any fauna will utilize this area by midsummer when we propose to begin construction, as this portion of the park will have been used extensively by campers since Friday, May 25, Memorial Day Weekend. Intolerant fauna will have been moved to other locations. The south and southwest buffers will remain intact as will the eastern portion of the park. This wetland will maintain its habitat connectivity with the riparian lowlands, terrestrial uplands, and estuarine/marine habitats available within the park via the southern buffers. This intrusion will be a linear corridor approximately 20 to 25 feet in width. The buffer will be mulched and replanted with native vegetation as shown in the plan. This will maintain sheet flow and act as a trap for sediments and nutrients. 5.3.3. Intrusion Site 3 - Wetland Complex B's Buffer This is the site of a nearly isolated wetland pond. It potentially communicates on the surface with the rest of Complex B during extreme rain events. It is also more pristine being surrounded by second growth forest. It is not surrounded by campgrounds so the habitat is less fragmented and is less impacted by the human disturbance that accompanies them. There is a pedestrian trail on the south edge but which has been present for many years. This wetland sits 97 feet south of the asphalt on 320th at 53rd Ave SW. State Parks' intrusion will parallel the asphalt edge on SW 320th and will intrude 20 to 25 feet. State Parks was advised to attempt to keep its sewer utility corridor completely within the park boundary to prevent infringing on the Lakehaven Utility District's franchise within the SW 320th Street Right -of -Way and to avoid incurring the cost of road reconstruction during the planning phase. It should be noted that directly across SW 320th Street is a residential neighborhood with all the associated activity and noise. This wetland will maintain its connectivity with the terrestrial uplands (268 acres) via buffers on the west, south, and east. This buffer will be replanted with native vegetation to an appropriate density. Addendum to SEPA DNS '---'Iment period ending August 7, 2006 Page 8 of 10 Amendment to Habitat Tec.. .ologies letter Report of June 30. 2005 5.4. Impacts (Wetland Complex B and C's Buffers) 5.4.1. Physical Impacts: 5.4.1.1. Hydroperiod Regulation — not demonstrated in the literature 5.4.1.2. Water Temperature Regulation — no impact This is a function of the shade provided by the buffer. State Parks' construction is on the north (shaded) side of all wetlands and is it confined to a 20 to 25 feet wide corridor. 5.4.1.3. Sediments — no impact to the wetlands and minimal impact the buffers Sediments will be filtered out in the first part of buffers' vegetation. State Parks construction will only disrupt approximately 20 to 25 feet of the buffer temporarily. Once the harvest is complete, the slash will be mulched to protect the soil, and silt fences and other erosion control best management practices will be instituted in the ESC Plan before actual construction begins. 5.4.1.4. Nutrients (principally phosphorous and nitrates) — no impact 5.4.1.4.1. Phosphorous attaches to particulate sediments and is filtered out with the sediments in the first part of the buffer by vegetation. Further, phosphorous in the environment is largely a function of cultural land use practices. State Parks uses very small quantities of Glyphosate, which is not mobile in the environment. Existing vegetation mulch, the ESC Plan, and replanting will trap and prevent the translocation phosphorous. 5.4.1.4.2. Nitrate is soluble in the environment, and is generally absorbed by roots, or bound to clay and organic matter, where it cycles through the biota. Nitrogen is limiting in the Pacific Northwest. Excessive nitrates capable of leaching into the wetland and being translocated would be a function of cultural land use practices such as the excessive use of fertilizer. State Parks does not use fertilizer as a typical cultural practice. There should be no translocation of nitrates. Existing environmental nitrates should be absorbed by the undisturbed root systems in the remaining buffer, and or bound to the clay or organic duff layer. The addition of mulch, the ECS Plan, and replanting will prevent the translocation of nitrates. 5.4.2. Biological Impacts: 5.4.2.1. Impacts to Fauna - minor 5.4.2.1.1. Impacts to general fauna - minor State Parks' construction activity will begin on or after midsummer and should be complete before January 15. By midsummer, most fauna associated with wetland buffers will have moved or have Addendum to SEPA DNS went period ending August 7, 2006 ��. Page 9 of 10 Amendment to Habitat Tec, .. �ologies Letter Report of June 30. 2005 habituated to human disturbance. The buffers associated with the camp loops will have been in use since at least Friday, May 25, the beginning of Memorial Day Weekend, which is the beginning of the traditional camping season. At Intrusion 3 - Wetland Complex B's buffer at 3201h and 53d SW, the road next to the corridor is traversed by vehicles and pedestrians, and is subject to residential noise. Camper intrusions are not a factor at this location. 5.4.2.1.2. Impacts to waterfowl, reptiles and amphibians — minor Waterfowl, reptiles, and amphibians are most likely to be obligate to wetlands in the spring during the nesting season. Nesting will be finished by July 15 and the adult and young will be capable of occupying other areas within the buffer or upland habitats. Mallard ducks, as an example, typically nest from Feb 15 — June 15, i.e., 30 days to nest, 30 days to incubate, and 60 days for flight. 5.4.2.1.3. Impacts to semi -aquatic mammals — none No semi -aquatic mammals (such as beaver or muskrat) are known to use the wetlands in the park. The SEPA Checklist lists river otter for the project site but this refers to their frolicking along the shores of Puget Sound. 5.4.2.1.4. Impacts to Salmonids — none Use of wetlands by salmonids is undocumented in the park but is reported in other locations (Sampson, Jennifer, 1994). There should be no impact to their use of the wetlands by State Parks' Intrusion 2 into Wetland Complex B's buffer. State Parks believes the ESC Plan will be adequate to protect the wetland. Intrusion 1 into Wetland Complex C's buffer and Intrusion 3 Wetland Complex B's buffer does not affect salmonids as they are isolated by terrain from Thames Creek. 5.4.2.1.5. Impacts to Habitat Screening — minor There will be a temporary diminishment of the vision and noise screen function for fauna during construction and shortly after until the vegetation regrows. 5.4.2.2. Impacts to Flora - temporary There will be impacts to the flora associated with the buffer. The greatest impact will be during the harvest and construction. Following construction the corridor will be replanted with native vegetation. In the long-term, the vegetation will return and may return in a better state than the current condition because the existing vegetation has been damaged by ice and windstorms. Addendum to SEPA DNS ment period ending August 7, 2006 Page 10 of 10 Amendment to Habitat Tec... ,alogies Letter Report of June 30. 2005 5.4.2.3. Impacts to Habitat Connectivity — minimal or none State Parks' intrusion into Wetland Complexes B and C's buffer is largely within established intrusions. The real undisturbed connectivity and refuge is on the south and east side Thames Creek, and that remains untouched by this project. 6. Wetlands 6.1. Impacts to Wetlands Complexes B and C — none State Parks believes that the wetland buffer function can be maintained during and following construction so that there will be no impact to the wetlands. This is accomplished by timing the excavation so that the buffer intrusions occur during the dry time of year and by implementing an appropriate ESC Plan. References: Pesticides News No.33, September 1996, p28-29, retrieved April 24, 2007 from http://www.12anuk.orq/pest-news/actives/glLrphosa.htm . Sampson, Jennifer. 1994. The distribution and habitat value of wetlands created by beaver (Castor canadensis) in southeast Alaska. M.S., The Water Center., retrieved April 24, 2007 from http://dents.washington.edu/gwws/Theses/- sampson.html . Sheldon, D., T. Hruby, P. Johnson, K. Harper, A. McMillan, T. Granger, S. Stanley, and E. Stockdale. March 2005. Wetlands in Washington State - Volume 1: A Synthesis of the Science. Washington State Department of Ecology. Publication #05-06-006. Olympia, WA., retrieved April 24, 2007 from httlx//wuyw- .ecy.wa.gov/pubs/0506006.pdf. . The above noted addition to the project is considered to be minor and does not create a significant adverse environmental impact. Therefore, the Determination of Nonsignificance issued on 07-18-2006 and the Addendum of 02-23-2007 continues as before. I PUGET — — '••' — SOUND=r I EXIST G BEACH 1 Il COMFO; STATION l , EXISTING \PUMP STATID \\ TO BE OF RADED WITH NEW F t CONTROLS OMMUNICATIONS, AND PIMPS, a I 1 I \ I 1 1 1 1 I \ 1 \ I I PICNIC + 1 NIC CROUP . CAMP . I r—APPROX. EAGLE I I NEST LOCATION. 1 1 1 I rr SETBACK ¢R01 I EAGLE NEST LO T10N. I O'g,-_-_EA= NEST MANA t 1 NT ZONE 600' SETBACK FROM � EfGLE NEST LOCATION, NEW SFG DISCHARGE MANHOLE. EXISTING FORCE MAIN TO BE / — CONNECTED. / ;f N EXISTING \ COMFORT \ STATION #4 �'r�tl-q ' LR �,, > jFiMPLOOIP NEW PUMPS=T STATION LOCATION. � i \ 100' SETBACK FROM \ WETLAND COMPLEX C _ i�1,320' (1/4 MILE) / SETBACK FROM EAGLE / NEST LOCATION. I / —EXISTING 1� COMFORT STATION #( � I � I 1 I i —EXISTING 1 I COMFORT I STATION 3 - / lick �'`�`'°.'-.-.'•. � EXISTING •,�"�.,_�` \ �$ COMFORT 5_... r: \ \ � Cola . ��:•, �� n STATION 12 r r _ � / Bulm N.RANCER / re wr surar UPPER CAAIPLOOP 14 100' SETBACK,,FROM 2' ^+ z _.-.. ,,� , �„ ' 100' SMACK FROM TYPE F STR �' '.. - " _ :.. �•°�� : f WETLAND COMPLEX B Q• '' .-. �. .-. �+cl 00, 100' SETBACK FROM �00, WETLAND COMPLEX B Y-� sOo' SETBACK FROM WETLAND COMPLEX B PARK BOUNDARY ('r I PARK SITE PLAN CAD NO. I T. 1N, R.3E. W.M. SCTION 10& 15 KING & PIERCE COUNTY —2,640' (1/2 MILE) SETBACK FROM EAGLE ACTION BY DATE NEST LOCATION. DESIGNED JMZ 1 0 DRAWN ELJ 1 1 O / CHECKED (FIELD) CHECKED (HDQTS.) x$ I i S PROJECT ENGINEER WASHINGTON STATE PARKS i�i� `° END OF PROJECT: CONNECT TO LAKEHAVEN A N D UTILITY DISTRICT SEWER. END OF PROJECT APPROX. 180' E OF RECREATION THE EDGE OF WETLAND COMPLEX A COMMISSION I (BEYOND PROJECT LIMITS) (REFER TO HABITAT TECHNOLGIES WETLAND AND JUNSTREAMS0,�SESSMENT LETTER 2005, FOR WETLANDREPORT, DASH POINT COMPLEX A LOCATION.) STATE PARK SANITARY SEWER IMPROVEMENTS CITY OF FEDERAL WAY CRITICAL AREAS SUMMARY rinl I P•l r- 4 F O R PERMIT REVIEW SCALE {SCALE SHEET 1 OF 1 0' 200' 400' FILE NO. �I 0 z0` PUGET -- — _ _ _ DWG# C-2� I I ` _ SOUND --� f� / I I E�cISTING SEWER FORCE MAIN DEMOLITION NOTES: I'PoNIC I (2" PVC) TO REMAIN IN USE. L _ BEACH PUMP STATION DEMOLITION, SEE DWG` BPS-2. BEACI COMFORT STATIfN ` s�� 1 LOWER LOOP CAMPGROUND PUMP STATION DEMOLITION EXISTING PUMP STAVONITO SEE, DWG# C-B AND C-9. T.21N. R.3E W.M. BE UPGRAIDED WITH NE r c SECTION 10, 14 & 15 CONTROLS. OMIAUNICATIONS. ^t- I z E DWG# C— 3 1 DAY USE AND CAMPGROUND COMFORT STATION KING & PIERCE COUNTY AND P 1 Er, r ,� T I I DRAINFIELDS DEMOLITION, SEE DWG C-10. G) 4 EXISTING LAKEHAVEN UTILITY SEWER SYSTEM CLEANOUT, I I I I -NEW SFM DISCHARGE MAN OLE. p EXISTING FORCE MAIN TO BE t FLpP SEE DWG C-6. CONNECTED. I 5 R ? J cJ ABANDONMENT OF EXISTING AND MISCELLANEOUS _ GCAMPP SEPTIC SYSTEM COMPONENTS PARKWIDE, SEE DWG wp N RANGER - - - I I • � .__. - I y: � � RES/DENCG � f �" �t GENERAL NOTES: 14- 1 — — — — 1. SEE DWG# G-4 FOR UTILITY AND TREE LEGEND, I \ I it1AT I+HE ; • RCs1dENCE AND CLEARING LIMIT AND TREE REMOVAL - J ( I r' = - f ' COMFORT I/ ' 2. SEE DWG#'S C-2 THRU C-6 FOR CLEARING LIMIT STATION # 1 I DELINEATION AND TREE REMOVAL IDENTIFICATION_ SIAPM , - UPPtI LI I I ' •� ` r CA,4PCL�'7P COMFORT d I I STATION ti#4 _ 'N NEW PlU�JP I -• « = I 79 I �� COMFORT I a STATION LOCATION. STATION #3— I I 1 - _ _ DWG# C— 4 � VA rH • 1 � � r �E� `_ I ; z COMFORT '� .rp ... I STATION #2 I � _ 1 y '" L---I---- �— DWG# C-6 4 I �= I � •'; �1 srr � I I CONNECT TO EXISTING HAVEN SEWER. AP OVED PC, CIO PLANNFrAm 00 (XV.d f*ft fty Dept d \ I DWG# C — 5 P� By PARK BOUNDARY (T YP). ` ' ` \ TTE PLAN Aq P 10.1), L Date - rc -s�It Tslumber - _ \ y RE I \ CAD N0.DI00-PSP007-SEWER-23DEM0KEY 0- 01 ACTION BY I DATE DESIGNED IM7 �04/07DRAWN ELJ 07 CHECKED (FIELD) CHECKED (HDOTS.) 2x" EXPIRES N/22/09 PROJECT ENGINEER WASHINGTON STATE PARKS imhkk AND RECREATION COMMISSION DASH POINT STATE PARK SANITARY SEWER COLLECTION SYSTEM SITE DEMOLITION TREE ' PLAN \ A 2 7 2007 PRELi MI oirmmg -,BQll DINGJ MA SHEET 23 OF 94 FILE NO- 200' 400 P UGET SOUND T 21 N. R. 3E. W.M. • SECTION 10, 14 & 1 / BEACH PICNIC ��\r KING & PIERCE COLIN1 A�'E- _ `� �V � POINT �•� r i CONNECT TO EXISTING •` \� 1 2" FORCE MAIN. EXISTING C 1 'N ` PICNIC SHELTER. i—=EEXISTING CXT 1 � EXISTING 2 1/2" PL WATER LINE / � W W W W W W W W` _ :--•-^1 -'r -'� CJ BEACH COMFORT STATION 111 8,� Fr�rFS t- 3 r'�'=yfk "�-•,i• i�r��1 EXISTING PUMP STATION. �� PY�'�;� . �flfl O�Ur' 1 + ;� *r �~ r ?y�.ix•. TO BE UPGRADED WITH NEW — : = _ V �p w� .. • I ; >s. ; CONTROLS. COMMumcATIDNS, �- -rim' " r ; '. , - - �- 4x " t .. ..;' . - AND PUMPS. (SEE DWGJ BPS-2 +• a s'- :A FOR PUMP STATION DEMO.) /i}� J��^ _= ��`-._' Y.�` ���.xw�` x `• �;ry w--L�a _ `- !•y y vim% • �` �Lj� �;,f `?iY, } \ —__'__-------__--�—;��`. k\�� `�. �� •'';, Sri \\r'' LK Q1• JOL: EXISTING SEWER FORCE MAIN I. \ 1 \ (2" PVC) TO REMAIN IN USE- U NIl 1�I �No a 11 11•, Sf ti6 mil .tl } rl .ati ••.� Jr= s_'-►r-� _y 5 I 1 1 1 x r>� .1 � � I I �:� .r' : kl"7—.n,'.1 I.-',�• .x.;.{ f •.+' r ,>c •d 1rw - q ,t-•:•11 ,f ` :"'�2•,x's -w. ''x .�r- • .r r -• +��:.i' '4 �4 - ,1' ,� 1 4 r f(C` s 4 ,Y' •�' '� .Y., x' t r` .�. '_y,._' � • x.: � yt � • '! x 'DAY USE x • , ', y ,t3 _ f } ° ' ' I= !- % PARKING ; 4 . ' Y. , .y GROUP CAMP _Cx 4s ',r •, .x �i. 9,' t -w'`pc• . r- ,', •• I �k io v� Ilk tiL i i -_,xi--�. Sr;t:yl ,r ��--=-� 'r.' f' - �Ir'1-` L •r. -. r �. I \ti : � % �. GENERAL NOTES: 1 - ti' `k� 1 z 1. SEE DWG# G-4 FOR UTILITY AND TREE LEGEND, AND III �'' •~Q CLEARING LIMIT AND TREE REMOVAL SCHEDULES. f f 2. SEE DWG#'S C-2 THRU C-7 FOR CLEARING LIMIT DELINEATION AND TREE REMOVAL IDENTIFICATION. P_RELIMINAR' SHEET 24 OF 9z CAD NO.D100-PSPDO7-SEWER-24DEMO W P- Q 0 a iY Z z z 0 rc d Z ACTION 6Y DATE DESIGNED J MZ 0 h ❑ i DRAWN ELJ 04/07 CHECKED (FIELD) CHECKED (HDOTS.) C ex YASy rr � A IA2 Is Y - • 10liA1• W EXPIRES 04/22/09 PROJECT ENGINEER WASHINGTON STATE PARKS Wig AND RECREATION COMMISSION DASH POINT STATE PARK f , SANITARY SEWER COLLECTION SYSTEM SITE DEMOLITION AND R MMITEEDvAL _.A PLAN P R 2 7 ZuuT_ C--2 0' 25• 50, 100' FILE NO. -•i�;`ti�).•• may. !�. fir ►,! EXISTING SEWER FORCE MAIN (2" PVC) TO REMAIN IN USE. rf rr rr yIf I/ � r �r � r I i � r � I . EXISTING DRAINFIELD TO BE ABANDONED, INCLUDING RELATED DBOXES, SURGE ��-- TANK WDWG#EC-10. MONITORING PIPE. SEE ABANDONMENI WORK "D INCLUDES INSTALLING A a NEW SFM DISCHARGE GROUT Op ( PLUG 2 FOOT LONG MANHOLE. EXISTING FORCE MAIN TO BE PLUG) IN SFM PIPE INTERCEPTED AT MHC8. TO a� CONNECTED PER DWG 1 SS-11. ` BE OBSERVED BY ENGINEER. 1y•`s� A f NEW HOSE SO ■ 1 * , Y LOCATION.y GROUP CAMP No _'r' o' O _� _ r-��' J yJ /--SHED Ilk IF w — W RELOCATE r EXISTING \ \>, SS �- SS , ' F,�4- i� HOSE BIB. t ■ C . T.21 N. R. 3E. W.M. SECTION 10, 14 & 15 KING & PIERCE COUNTY GENERAL NOTES.- 1. SEE DWG# G-4 FOR UTILITY AND TREE LEGEND, AND CLEARING LIMIT AND TREE REMOVAL SCHEDULES. 2. SEE DWG#'S C-2 THRU C-7 FOR CLEARING LIMIT DELINEATION AND TREE REMOVAL IDENTIFICATION. 3. ALL STUMPS WITHIN THE TRENCH ZONE, INCLUDING STUMPS PARTIALLY WITHIN THE TRENCH ZONE, SHALL BE REMOVED AND DISPOSED OF OFF SITE. 4. ALL STUMPS OUTSIDE THE TRENCH ZONE SHALL BE CUT FLUSH WITH THE GROUND. 5. ALL ROOTS SHALL BE PROTECTED OUTSIDE THE TRENCH ZONE PER SECTION 15639-TEMPORARY TREE AND PLANT PROTECTION. ROOT PROTECTION BY MEANS OF MULCH SHALL OCCUR PRIOR TO ALL ACTIVITIES. 6. ROOTS THAT REQUIRE CUTTING WITHIN THE TRENCH ZONE SHALL BE CUT PER SECTION 15639-TEMPORARY TREE AND PLANT PROTECTION- �SHOP 0 > 1 +� v, ■ 1 \I / 0 CONTRACTOR TO REROUTE / --T_ INTERNAL SANITARY SEWER ■ / PLUMBING PER CODE INCLUDING . n.• a vo 1 � � r • il.. f.` r' ■ f r�' CORE THROUGH FOUNDATION .• - . ... . c �■ \` I� r� fi t WALL. 6' WIDE PAVEMENT CUT s. PER DETAIL DWG# '.1 \ RESIDENCE pP EXISTING SFM '_*' .•y ,'*' �__� - f�.-.x^--1- ABANDON 1N PLACE. Y■• 6+00Aw 1-01 > MATCHLINL DWG# C-4 ,�` >'� 4.� lqt—_ S. RA NR RESIDENCE PRELIMINARY COMFORT — STATION 11. r• f �, r:• I J � SHEET 25 OF N0.D100—PSPDO7—SEWER-25DEM0l ~l 0 ACTION BY DATE DESIGNED JMZ 04 07 DRAWN ELJ 04 07 CHECKED (FIELD) CHECKED (HOOTS.) i Uq x,es3• t EXPIRES 04122M PROJECT ENGINEER WASHINGTON STATE PARKS oli�- AND RECREATION COMMISSION DASH POINT STATE PARK SANITARY SEWER COLLECTION SYSTEM SITE DEMOLITION AND ¢n[ r MI w ���*, — WAL �I � ` , L] A' 2007 r� 1 t F�w T.21N. R.3E. W.M. �, SECRON 10, 14 & 15 � - *YJ� — 1 .. !, KING &PIERCE COUNTY MA TCHLlNE DWG# C— 3 � . - r �p�1 - � ': t� 'tr S ANC-hR �r� `S��-� _ 1�yWV 1 �1;r ,1 \\\ �EC�, COMFORT STATION 11 �_- MAXIMUM CLEARING � - � [���. � � , yR•r T. LIMITS. CLEAR 30'rm. AREA FOR BORING WORK. ix y RECEIVING PIT rr —• Q \\ S D ° 17 N JI 7iiENCHLESSJ _ { CRMNG - MAXIMUM CLEARING , 1` r•, _ f _ ,.—; 3~ '� *`• - - UMITS. CLEAR 3O'x3O' - _ AREA FOR BORING WORK. z JAC1CiNG PIT EXISTING SrM. F O Ark ABANDON IN PLACE. 1,f r•' �I�*�,, �% CONTACT �' �110 STATION RV GENERAL NOTES- v>, DUMP v STATION - 1. SEE DWG G-4 FOR UTILITY AND TREE LEGEND, AND PHONE CLEARING LIMIT AND TREE REMOVAL SCHEDULES. , ' I BOOTHS � �� f' •, .' . ��-��-�•'J , . �, 2. SEE DWG#'S C-2 THRU C-7 FOR CLEARING LIMIT C��kOQ r%! �� DELINEATION AND TREE REMOVAL IDENTIFICATION_ /_ �:, r�°� . 3_ ALL CUT PIPE TO EXISTING SFM TO BE PLUGGED WITH Y -� - _ r , PPER 'D`� . - .. A 2 FOOT CONCRETE PLUG_ 6' WIDE PAVEMENT UT I Y�nr. �L z�11#'i •�. 'rr STORAGE CMPLOOP E. C BUILDING 4. ALL STUMPS WITHIN THE TRENCH ZONE, INCLUDING} PER DETAIL DWG _ ��� ryl d ! y r_ �' I D �!� ■y`' STUMPS PARTIALLY WITHIN THE TRENCH ZONE, SHALL BE (TYPICAL) -Clri �I REMOVED AND DISPOSED OF OFF SITE. Z tUU j Al 5. ALL STUMPS OUTSIDE THE TRENCH ZONE SHALL BE CUT �'y rl v ? t •,1 FLUSH WITH THE GROUND. of 1. \ S.SI. •1 V 6- ALL ROOTS SHALL BE PROTECTED OUTSIDE THE TRENCH [�"`�1r= •� ` /� V �# , • �_ / 1 r ZONE PER SECTION 15639-TEMPORARY TREE AND �" ' PLANT PROTECTION_ ROOT PROTECTION BY MEANS OF ry �'CP N ~' ° Rk ry` , � AMPRIT �i W I I (' • `' of MULCH SHALL OCCUR PRIOR i0 ALL ACTIVITIES. A 7. ROOTS THAT REQUIRE CUTTING WITHIN THE TRENCH ,j1 SS X B + rl� 1 i�►''/ , ZONE SHALL BE CUT PER SECTION 15639-TEMPORARY _ ,:, �ti .� d F, li'qr TREE AND PLANT PROTECTION. {Y �� 3► ' // H � � � �` r^,�i r; � ► �� � � I ti LOWER,► `, %` r�a1 ► ►�' \�'\ ¢� _ CANIPLOOP 7T 11 J I / l — - n_�_n 5 s p >W _ T ' 3Y• .. �i / \i ri !' 3� NEW PUMP STATION ACCESS ROAD_ r !'1 1; - fv�----�rv_ry�� 1�p ��r I� - ���� . _Y� 4• SEE SHEETS MPS) & MPS2 FOR MAIN , ' I• , . FORT� PUMP STATION INFORMATION AND PUMP 41T T ''l41 STAi'R111 14. •�.�"�' STATION AREA CONSTRUCTION. , I' 1 1 K 1}I f1 4, _-f ' '• ] r ► 1 - �{� 1 CAD NO.D100-PSPDO7 ACTION BY I DATE DESIGNED JM_7 rtO7 DRAWN ELJ CHECKED (FIELD) CHECKED (HOOTS.) �} ICHA r,, a 'I' mF E Al EXPIRES 04/22/09 PROJECT ENGINEER WASHINGTON STATE PARKS AND RECREATION COMMISSION DASH POINT 5 ��" 1�II I I- '�11'1 O 1 STATE PARK f COMFORT NOTE: d I r ,11 1 STATION 03_ 1 y I i'WGUATION IN THE WETLAND BUFFER IS NOT ":\ ' L SANITARY SEWER ° r`� qr ^Y j "' WV I SHOWN, IN NON-CIIMPINC USE AREAS OF THE 1 COLLECTION f r 11 V.. .' �{I {� WETLAND EIMER, VEGETATION 15 SIMILAR 1N 1 d " '' }i w-- a +�' �` - � + i`�. +� - r V I" • � V " DENSITY. SIZE AND SPECIE pISTR18LITION TO THE ' / 1�.• 11 • j �• •, _ _ _ _ �L`s�; • ADJACENT AREA INDICATED FOR CLEARING AS PART- SYSTEM r . Q+, ' i� r `ice►_ 4 FBI /s 1:, F 1 x`L OF THIS PROJECT. IN CAMPING USE AREAS. / 7 B UFFER CAMPLOOP VEGETATION ROADS. LALTERED CAMP PADS AND SITES.�� jY f -•� t s . ,.:� ► SOCIAL TRAILS. INVASIVE PLANT SPECIES ARE , r • . ' SITE DEMOLITION r r ~ e r ` 4 i ` ; i ENCOUNTERED IN THE BUFFER AREAS. tir a, ' Iaa SETBACK FROM ;.' AND VEGETATION IN THE WETLAND BUFFER IS NOT rx , , �f 1 µvUDQ un o , I,. �e SHOWN. IN NON -CAMPING USE AREAS OF x �PtEx 8' J-1- q THE WETLAND BUFFER, VEGETATION IS SIMILAR " r Q _ `' 1 /� 3 - ' E ��~� IN DENSITY, SIZE. AND SPECIE DISTRIBUTION t'- v\ .• v , / rye r ' P LA N TO THE ADJACENT AREA INDICATEQ FOR 5 ` �s r a 11aj1 CLEARING AS PART OF THIS PRDJECF. IN �% r - `� ' OR �• a I t . 1 wu - 1 /y - _ �, AIR 2 7 2007 CAMPING USE AREAS. BUFFER VEGETATION IS , f •f Z' wlD� Ak �_ hr r CEXTENSIVELY AMP PADS AND ALTERED TER D BY CAMPLOO? AND SOCIAL ROAD E r� +,I�r �� \\ 1� ¢ � Q \ � � �• Z\ � Qy ng' � A !1 I� C — 4 ` � �. MATCHLINE DWG# C-5 -C L _ 3 INVASIVE PUNS SPECIES ARE ENCOUNTERED � ,F IN THE BUFFER AREAS. THE AREA IDENTIFIED r I �j� r\ rt� r ' '• 1 ILDI NQQ FOR THE NEW ACCESS ROAD WAS HEAVILY '� i I �+ llE�' r. r - O' 25' 50' 100' IMPACTED BY TiiE T]ECEMBER TOO. ' ��' �II P R E L . fN A R Y �,�� xa� „- „6 �- - S H E ET 26 OF 94 NUMBERRM, RESULTREES A IN A 51GNIFT�arrT r W p% d ,� 1 y FILE NO. NUMBER OF TREES DAMAGED. r � � � � 11`• � �' �i / ry�J •,1�'A� x. MATCHLINE DWG# C 4�.r F• k Ifi . . '' � '� i ~ '� sq 6- r �, f • �CWFORT­ `` } SUT�ATIDAI j2.L mil CAD NO.D100-PSPD07- _ sW J20TH sT W PARK BOUNDARY vs 1 SF- Z u n1.�57• x 4- O C" w � (D l O t0 p — CD o 0 ------------ Ld `= INTERMITTANT STREA M_ l� \tj Y $ WIDE PAVEMENT CUT. SEASONAL v, ••. y i + O tti; 1 • • (mil NOTE: \L •t t0% VEGETATION IN THE WETLAND BUFFER IS NOT U ~ .•-� --- -, . . 11 " l��I -I - • \ I SHOWN. IN NON -CAMPING USE AREAS OF THE Y Q W w ! Qd r +L�'- { O Y • .I WETLAND BUFFER. VEGETATION IS SIMILAR IN DENSITY, SIZE, AND SPECIE DISTRIBUTION TO THE , _..�- _... WETLAND y L u •. Y ADJACENT AREA INDICATED FOR CLEARING AS PART / OF THIS PROJECT. IN CAMPING USE AREAS, / BUFFER VEGETATION 15 EXTENSNELY AITEREO BY COMPLEX B ' G, r•: \ 1. (.Y 1 f r �A ' 1 I' f CAMPLOOP ROAM CAMP PADS AND SITES. AND 0 WVL SOCK T�LS. IN4ASivE PIANT SPECIES ARE t�}'1' �J pti� I i �v ry p+ _ ENCOUNTERED IN THE BUFFER AREAS. ogit}4 - ge 4. w .�. v. u> ••', t'A� f ifi �, �! . • I WV \ ° ` INTERMITrANT _ �: Y --•-- �..v :�_. - SEASONAL STREAM ��� w .� �. �, � • . _ •; ,ao,�M kf w•.•! ���',~`�'� v. �. �•,r -�' / " , � GENERAL NOTES ����� �, �`,. �`i,;+. _. � � Tom— -• 'Rf ,•~'�I _ ---------- y w J. �. .(• / / �' / /'� J w w W�'•. A,; � .: �• V•: +d W W y v, W W \ 1. SEE DWG/ G-4 FOR UTILITY AND TREE LEGEND, AND CLEARING LIMIT AND TREE REMOVAL SCHEDULES. •• t •,� ,•.l-.._ t w W w .* •-- .' w W W .I. v. J� .L v. .L .L v. 2. SEE DWG#'S C-2 THRU C-7 FOR CLEARING LIMIT w` ��v--.._._ v v w w v v v w w ev: , DELINEATION AND TREE REMOVAL IDENTIFICATION. 3. ALL STUMPS WITHIN THE TRENCH ZONE, INCLUDING •' STUMPS PARTIALLY WITHIN THE TRENCH ZONE, SHALL BE REMOVED AND DISPOSED OF OFF SITE. •1• r ';.>, w W a w w w a +• •� + + II 4. ALL STUMPS OUTSIDE THE TRENCH ZONE SHALL BE CUT W w w w EOGEL OFw w FLUSH WITH THE GROUND- W W , WETLANDS �, a 7' 5. ALL ROOTS SHALL BE PROTECTED OUTSIDE THE TRENCH ZONE PER SECTION 15639-TEMPORARY TREE AND EXISTING 3' I DIRT TRAIL. MULCH SHALL OCCUR PRIOR TO ALL ACTMTIESNS OF v v v v I WETLAND W w v W 6. ROOTS THAT REQUIRE CUTTING WITHIN THE TRENCH w; ZONE SHALL BE CUT PER SECTION 15639-TEMPORARY COMPLEX v W w II TREE AND PLANT PROTECTION. W W I S T. 21 N. R. 3E. W. M- v v v v .•' Y — — — SEC TI ON 10, 14 & 15 Y KING & PIERCE COUNTY .•0• w w v. w v- w v. v. .v 1 W Y. .No 4? W W 1 • .L v. w w w .i. w v. w 1 I v V' v .L W •L v W v Li• I w w •Y � w 'w w ... .. .L y;• / w I R .. w w t• . Y'� w w �r_._•�. .' PRELIMINARY, SHEET 27 OF 94 ACTION BY I DATE DESIGNED JM7 04 /07 DRAWN ELJ7 04 07 CHECKED (FIELD) CHECKED (HOOTS.) 1C o •ti o. x rgHAL EXPIRES 04/22/Ob PROJECT ENGINEER WASHINGTON STATE PARKS I�r AND RECREATION COMMISSION DASH POINT STATE PARK SANITARY SEWER COLLECTION CYCTFAA SITE DEMOLITION AND TREE REMOVAL SU B M WLW PR 2 7 2007 C- 5 1 FILE NO. CAD NO.D100-PSPD07-SEWER-28DEMO GENERAL NOTES: (FOR BOTH VIEWS) o v J 1. SEE DWGj G-4 FOR UTILITY AND TREE LEGEND, AND 4. ALL STUMPS OUTSIDE THE TRENCH ZONE SHALL BE CUT I . CLEARING LIMIT AND TREE REMOVAL SCHEDULES. FLUSH WITH THE GROUND. r�^ 1 Q 2. SEE DWG#'S C-2 THRU C-7 FOR CLEARING LIMIT 5. ALL ROOTS SHALL BE PROTECTED OUTSIDE THE TRENCH J I jJ207-11 T.TI N. 0, 1 W.M. DELINEATION AND TREE REMOVAL IDENTIFICATION. ZONE PER SECTION 15639-TEMPORARY TREE AND - SECTION 1O, 14 & iS Q PLANT PROTECTION. ROOT PROTECTION BY MEANS OF KING & PIERCE COUNTY 3. ALL STUMPS WITHIN THE TRENCH ZONE, INCLUDING MULCH SHALL OCCUR PRIOR TO ALL ACTIVITIES - STUMPS PARTIALLY WITHIN THE TRENCH ZONE, SHALL BE REMOVED AND DISPOSED OF OFF Sr E. 6. ROOTS THAT REQUIRE CUTTING WITHIN THE TRENCH , �{ ZONE SHALL BE CUT PER SECTION 15639-TEMPORARY 'V+ TREE AND PLANT PROTECTION. � p,P �D� z _ SW 320 T �` � w I � _ IH ST 1 � SHED • `+ ! - W ~—= ' VYII_ _ Up--- U �Y UP---�-u�� V��• JB—_ 51�--� lle—�i7�� L1i I I y- 12'kn =_"_a I ___*---5- - �--I-- r^ iCiun V S �/ ) a s s + ' COY+ Cn ��" rA� t 1 xo - ? •Hp 1A o n"ACTION i 41 tO O +_F -H x, BY DATE OOJ 000 DESIGNED JMZ 04 /07 1 Q /O O DRAWN ELJ 04 07 - // �I CHECKED (FIELD) Lijt�P 4 W - _ W NOTE; I CHECKED (HDOTS.) Z y�nLQ �T�AJYLl�7 y ,/ VEGETATION IN THE WETLAND BUFFER IS NOT U INTERMITTANT ; y / / SHOWN. VEGETATION IN THE WETLAND BUFFER IS F� I _ SEASONAL STREAM\ W _ y ... • / SIMILAR IN DENSITY, SIZE, AND SPECIE Q c U -- : ti w DISTRIBUTION TO THE ADJACENT AREA INDICATED ' n w" • - -------•----• / / � f „• FOR CLEARING AS PART OF THIS PROJECT, AND IS '- a / REPRESENTATIVE OF UPLAND VEGETATION IN THE + T o REMAINDER OF THE PARK. I ' ----- WETLAND }� -- '`• COMPLEX B FXPIRE$ °./nro, 71 • r - - - - _ _ I PROJECT ENGINEER NOTE: WASHINGTON �AT CONNECTION TILIDISTRICT STTUB,CONTRACTORT10N TO NSHALL:E �N STATE r REMOVE VINYL FENCE. STORE AND PROTECT PARKS lbb FOR RE -INSTALLATION_ j �J �-�- IDENTIFY AND SURVEY PLANTINGS PRIOR TO AND � �• •�+�-l�[ij�� �Y 3�J 0' ST i �1 REMOVAL. PROVIDE ENGINEER WITH MAP ESHOWING LEVATIONS LOCATION NSOF AL PLANTS AND RECREATION OF IN LANDSCAPE AREk COMMISSION IC r STORE, PROTECT, AND MAINTAIN PLANTS DURING WORK- r^ ss - g5 _ gs RESTORE TO PRE -CONSTRUCTION CONDITION, DASH POINT ~ II I �SJjr�`' 1� INCLUDING LANDSCAPING (RE -PLANTING PLANTS, I^ � TOPSOIL ETC.), RE -INSTALLING VINYL FENCE, STATE PARK J x AND ESTABLISHING PRECONSTRUCTION GRADES. V) RFM�STING CLI,NOUT. SANITARY SEWER IpILU 1G .a I iM%E IUR I sF srM ,,� COLLECTION r �• ka �► '° sF,�- SFI� SYSTEM +� F,,� F SFAf , '---„-_. - - - - -P +O W f + �.7T V .A IYHEY r O ii O +O 4- }� + + ` Z I _ O CDo CD CD 0 0 o SITE DEMOLITION AND 0 CONNECT TO £ KISTWNG TREE REMOVAL LAKEHAVEN SEWER STUB OUT. ED RESUBM Q � PJVI SFM DISCHARGE MANHOLE. I— APR 2 7 2007 C-6 P R E LI M I N ARY II,_ AY SHEET 28 OF 94 BU 1°Q' I FILE NO. CAD NO.D IN T21N. R.3E. W.M. �( SECTION 10, 14 & 15 I' f ^ �:• KING &PIERCE COUNTY I 11 GROUP -—''l ``'`'Y SEPTIC TANK ABANDONMENT NOTES: 11 r Sy CAMP -:�`- J -- < <►`= —/1 Vr SHOP/ / 2. ?'OFFICE 3. RANGER- y RESIDEN�Er— i, ( Jl RANGER rY `. ` y_1 '` RESIDENCE pt ----- Ts:�._f jY.-�r '• 1� '' ��vt�3 � tit r 1 6 7 Y� a,,_ u n/ri-`� Y ' L_, �;_ ■R8 •ti'yUPPER r j .—L-•yW'pj ;p�" ' - ; - `�', CAMP LOOP �+ Cyr / f !! t i`�'1A✓ r�%rI Ycp � t ' . i r f :1 l 1 yyy.lrj L' 1� .I t•`1 ! II 1'.� �I LOWER r 5i" ,, ,•, a ' CAMP LOOP r l '1 1'1 y ry • �t. ABANDON SEPTIC TANKS AND OTHER SEWAGE CONTAINERS PER WAC 246-272B-18501. ALL SEPTIC TANKS SHALL BE PUMPED BY LICENSED SEPTAGE HAULER PER WAC 246-2728-19501. TO ABANDON SEPTIC TANK: • PUMP SEWAGE AND HAUL AWAY. • REMOVE AND OFF -SITE DISPOSE OF ENTIRE SEPTIC TANK TOP, AND ANY ACCESS PORTS, AND VALVE BOXES. • WHERE SEPTIC TANK AND PROPOSED MANHOLE CONFLICT, REMOVE ENTIRE SEPTIC TANK_ • FILL VOIDS WITH GRANULAR BACKFILL_ • FILL AND COMPACT SOIL OVER SEPTIC TANK TO GRADE. • APPLY CEMENT GROUT PLUG (2 FEET OF PIPE) TO ALL CUT PIPE ENDS FOR ABANDONMENT_ EXISTING SEPTIC TANKS TO BE ABANDONED NOK TANK LOCATION VOLUME (GALLONS) NOTES 1 COMFORT STATION #4 5,000 LOWER CAMP LOOP 2 LOWER CAMP LOOP 1,000 SEE DWG#'S C-8 & C-9 3 SHOP/CAMP HOST 750 REMOVE TANK 4 NORTH RANGER 750 RESIDENCE 5 SOUTH RANGER 1.000 _ RESIDENCE 6 RV DUMP STATION 750 ABANDON VAULT 7 RV DUMP STATION 500 8 COMFORT STATION #1 900 UPPER CAMP LOOP 9 COMFORT STATION #2 3,500 UPPER CAMPLOOP 10 COMFORT STATION #3 900 UPPER CAMP LOOP 11 MAIN DRAINFIELD DBOX g00 SEE DWG# C-10 AND SURGE TANKS NOTES: 1. ASSUME ALL TANKS PRECAST CONCRETE INCLUDING LID_ 2_ ASSUME ALL TANKS HAVE 2 COMPARTMENTS. 3. NOT ALL EXISTING TANKS ARE BAFFLED. rp$Al t1rl�•••. ;;; I r' 4. RV DUMP CONTAINS WOODEN DISTRIBUTION VAULT. REMOVE AND DISPOSE ALL WOOD. CUT AND REMOVE PLASTIC PIPE, PLUG PIPES, AND tiff J G) ��1 FILL. C A •�ytiy PRELIMINARY yy y �J f.l t� l,l••n� 1` r NF�f SHEET 29 OF 94 '�� � • -r �•b1 ACTION I BY IDATE DESIGNED I JMZ 04 07 DRAWN ELJ 04 07 CHECKED {FIEIOj CHECKED (HDOTS.) CI x,r •1142 �vNA, F3� cxvr+Es mUax/ce PROJECT ENGINEER WASHINGTON STATE PARKS AND RECREATION COMMISSION DASH POINT STATE PARK SANITARY SEWER COLLECTION SYSTEM 1 6-111 mm-n Gi'�il.�!■ ".w.� APR 2 7 2001 C_7 FILE NO. 200' CAD NO.D100-PSPD07 72//1.,,,e,3-,bY." 9607/0A/ /O .�/�vC� CDci�rY F_--__ I I I I I I I ro �xisr/,(.r�aey, DEMOLISHED. . "'„-,,^)r,rzr,rnr^,e- -�rn( ,e GENERAL NOTE THIS DRAWING IS A SCANNED IMAGE OF A LEGACY DRAWING, AND IS NOT TO SCALE, THIS DRAWING IS FOR INFORMATION ONLY AND TO DEMONSTRATE DEMO PLAN FOR EXISTING PUMP STATION. �I 0 Z 0 0 ACTION BY DATE DESIGNED I JMZ 04 ( DRAWN ELJ 04 ( CHECKED (FIELD) CHECKED HDOTS.) ,dQ�Plpt�7 PLL/Ao//(/G .SCf1�,Gid%.rG PRELIMINARY SHEET 30 OF 94 t *� W41 EXPIRES 04/22/09 PROJECT ENGINEER WASHINGTON STATE PARKS r AND RECREATION COMMISSION DASH POINT STATE PARK SANITARY SEWER COLLECTION SYSTEM LOWER LOOP CAMPGROUND PUMP STATION APR 2 7-2007C_8 OF FEDERAL WAY BUILUI BLIPT. FILE NO. CAD NO_D100-PSP007-SEWER-31PUMPDEMO I - — -------------------------------- { ----- - ---- - ,FX/5•T/NG it f6TEiZ_ � t f � r. � . • i - �.-�ov - -PLUG EXISTING 3" FORCE MAIN -----------I - --�--. - - + WITH CONCRETE. ---•L; 11r r1'" J z 'asn�ic� aayvs„sic i�iG t ! T t I ("/11SE CO[/P�E2� �3'J.N/�S w/A�dElX.�1N�G'.OL �O/.O� C,C✓GSE LaCL7,� { I �j° 5G4WS, drUOZ4 yA7 - 7 3/4 .L -a-A- +F.w 7 1,-A.i IIIr_---____——,___—_____._.__-- ____.--� I I f , P L Li KI , .-I DISCONNECT AT MAIN ELECTRICAL PANEL. II L_ ! _Xff'IrI• 11 -_�. I I I I I I I ,,,yI" V�l� 411-.II 1 I 1 I 1I Y" Ir ELECTRICAL PANEL. +. 1 I J!__._1 1_ _ I� I.I. jivf{�Pel'�p,�I Oil -�,I,i'l,l, II °tlil&I�l II��. J R�. _ , I oo� PLUG EXISTING 3" FORCE MAIN �_-- �� I WITH CONCRETE. 1 ' # I�+i{i���� I I ' I FILL WITH COMPACTED STRUCTURAL GRAVEL -'� 1 ♦ �' jIiiv .h it PLUG EXISTING OilI i AND CAP WITH 4" OF CONCRETE. gi 1 1 t GRAVITY PIPE WITH CONCRETE. I •!'• I It�J i f rave TXax• � � fYT. ✓ice ,NPSCJSTd/NGF_.�S STSE4 • W-,,' d.; 415-42n 4' u�aw�n.m•�vr � — �rGC'�.c'C?�.Q�itf0l�.dG - W7 EX6-1t 1; ! T .-VT _ -1 I } .......(2/ f//Z.3C/OT/cNZ/i✓ems T � � L__.J -9 ECTION TI--1[_L PIPE- CI-IZ�sSE• �i OW Z /NE OF ✓NL.ET 1 #z o�AVo rtiaeu/uG Zy^,[,/T LEGEND: AC//✓o'er/ ow r---- --71 {-- AREAS TO BE It _'. _ _ , _ 1 DEMOLISHED. J .�C/d.✓/7 �/ OFF 60770/✓ OF _-cC,-T/O,V L/NE�S GENERAL NOTE THIS DRAWING IS A SCANNED IMAGE OF A LEGACY DRAWING, AND IS NOT TO SCALE. THIS DRAWING IS FOR INFORMATION ONLY AND TO DEMONSTRATE DEMO PLAN FOR EXISTING PUMP STATION. W1 0 ACTION BY DATE DESIGNED JMZ 04 07 DRAWN ELJ 04 07 CHECKED (FIELD) O *JAAs r'a ti a Y stt4p f �OFlAL EXPIRES 04/22/tl9 PROJECT ENGINEER WASHINGTON STATE PARKS i AND RECREATION COMMISSION DASH POINT STATE PARK NITARY SEWER COLLECTION SYSTEM LOWER LOOP CAMPGROUND PUMP STATION RE A inn Ell pt onn7 C-g PRELIMINARY SHEET 31 OF 94 TypFFEMwAY FILE NO. jpL d r/ 'AQv/6riF,111 A*51 A04 r CapArrrl`ar+a' %Nj2 `of '04X ,eT D 15Tle/6arlON 4ox rrTd I III t .A"dQ.Kd".SAJ DF!'All.ED I r j Yf�t/ri+P �,ed y xrpr.E,t�tp d.S 1Srt/ � 2�_&,2C1 f I r-A,F&S NOTES: DEMOLITION WORK OF THE DAY USE AND CAMPGOUND COMFORT ST) DRAINFIELD INCLUDES: REMOVAL OF ALL MONITORING AND VENTING TUBES, AND BACKFI WITH COMPACTED GRAVEL AND RESTORE WITH GRASS. 2. REMOVAL AND DISPOSAL OF TOPS OF SURGE TANKS, FLOWMETE. VAULT, AND "D" BOXES_ BACKFILL WITH COMPACTED GRAVEL Al RESTORE WITH TOPSOIL AND GRASS. 3. PLUG ALL PIPE ENDS IN SURGE TANKS AND "D" BOXES WITH CEMENT GROUT (2 FOOT PLUG). 4. ABANDON SEPTIC TANKS AND OTHER SEWAGE CONTAINERS PER 246-2728-18501. 5. ALL SEPTIC TANKS SHALL BE PUMPED BY LICENSED SEPTAGE H PER WAC 246-272B-19501. Irre� a.+ci+, P� Coy�r: Akiea+�'X-.S a,�'x`- crrnnwrr 4wr, ew rr :ria,A%%9 brl Art+rXirG ^orri ij� r/40400.-W w wcW&l"AWdn,+r fkw —A-,n,-y-,- f dkr E,2 jrAuzr V.A1147-AZ � � o d���`1P6•kL7crrvp� GENERAL NOTE THIS DRAWING IS A SCANNED I LEGACY DRAWING. AND IS NOT THIS DRAWING IS FOR INFORMATION 01 .F� AND TO DEMONSTRATE DEMO PLAN F�(7 EXISTING DRAINFIELD. CITY C PRELIMINARY SHEET 32 0I?U CAD NO.D100-PSPD07-SEWER-32DFDEMO TION 0 a _L a a z 2 ID VAC z z g PULER zz ACTION BY DATE DESIGNED JMZ 04 07 DRAWN ELJ 04 07 CHECKED (FIELD) CHECKED HDOTS. C 0 � I F x 41142 �WiAL a EXPIRES O4122/09 PROJECT ENGINEER WASHINGTON STATE PARKS ili - AND RECREATION COMMISSION DASH POINT STATE PARK SANITARY SEWER COLLECTION SYSTEM DAYUSE AND CAMPGROUND COMFORT STATION RAINFIELD LITION PLAN �1B 1LY Z007 C--- 1 O IR 2 7 !RAL WAY KEPT. ro SCALE IF FED DING FILE N0. rt SITE r iAN APPROVAL Permit Number: /. CONDONE u SA I, t■ �11 ■ V r I.... LEGEND: O CLEAN -OUT O R.V. HOOK-UP 4" PVC SEWER LINE O EXISTING MANHOLE NEW MANHOLE SILT FENCE -_»—« DRAINAGE DITCH ® TRIANGULAR SILT DIKE O CAMPSITE DESIGNATION CONTOUR INTERVAL-V-0" ESC. NOTES: 1. WORK LIMITS EXTEND 6' EITHER SIDE OF SEWER LINE. 2. RESTORE DISTURBED AREAS IN KIND USING SEED MIX & MULCH IN ACCORDANCE W/ KING COUNTY SURFACE WATER DESIGN MANUAL APPENDIX D FOR SMALL SITE ESC MEASURES. 3. NO CHANGE IN SITE IMPERVIOUS AREAS AS A RESULT OF RV UTILITY IMPROVEMENTS. 4. WINTER STABILIZATION REQUIRED BETWEEN OCT.1 AND APR 30. 5. PROTECT SIGNIFICANT TREESIROOTS FROM DAMAGE INSIDE AND OUTSIDE OF WORK LIMITS. DATUM: HORIZ. NAD 83-91 VERT NGVD 29 DATUM WA. STATE PLANE NORTH ZONE PROJECTION EXISTING MANHOLE Bt RIM ELEVATION = 171.36 EXISTING MANHOLE 62 RIM ELEVATION = 176.79 rr r� °dp.•�'_--M1- � 1 \1 `♦ \♦ r + 1 1 "`'"`'4' � �i�w "_ lilt,��, rtif-r _ter 1 r + • I gym/ r L Il �\ \ { ., t . I. r85_\ r \. 1. rr--`' \; L♦ 'i 1Ul yr r/ , t \ L 1 r1 : , 1 I y r \ LL 5 / \ \ 1 ♦\ ,♦L\ \\♦ti \ /r 11 1,, \ j \♦ �j ♦, it � � tom._= __ _ / ��� =�v Y JJ - ---_� I 111� ♦ �2 1 1 1 ^ I I�ilrrs ►J�+rria �'''\\ram--ti L � ♦ ! 1 r � i �-���-�.� r - - - - ----`♦�♦•♦`w `ter♦ 11 rJ1JJ�4 - -yam ►►-� }rr \;� � / J r--. r ] 1;► `.-'■-'I Lr��rJ (+D T.21N. R.3E. W.M. SECTION 10, 14 & 15 KING & PIERCE COUNTY SEE SHEET \ :QxI/ rrr \\• \ \ ! 1 t \, l! ► / 1 rt/r rtA rI r/ 11 /I -rL\ \ I ♦ � r 1 I I I rII /r1; l h�S�r . y. � \ i I /1 1 - + J� rg iif�i JI jf Iit Jr / �■ I� + 1' \ ` I 1 I,=J- F rr1J/i0rrr■r 4J/rlrl 1 1 1 J r \LI ,���" / resc,�i r / .IIIr►w,rJ -_,ss ► y s 1 � I 1� -�--__ '� ��► \• -�- \ r�►ram! • { f r\ MH B2 r r E IJr1 1/J/MlII I -m% ~J-1 JI//n { [ 1► r __ I I 1 I [. 1 III ! - � _ � ♦ � \ ~♦ - _ r I -._ `' .�-r / - r / -\ ,\tea ♦,1 { It II Jrl rl Ili [. I \ -� _ ��_ ♦ ♦ 4 - -- - `� `\ r- 1 r r� :♦ /s.♦\ �� \ 11 \ / 1 t_■ , Irr ilk11 { 1L\tl1 l \ \ 1L..\\y �I -/ yLl I r \`� \I� 1 .r r 1 --."1 ,. L r �1 \ 1 `, 1 1 \\ ! I { t ♦ � a . \\ i I • ` •� L EXISTING CATCH BASIN �\ — _ PROTECTION. SEE SHT r -' 4 OF 4 FOR DETAIL. L `^L—��r rJf i `�-_-►rO.iFJ� ` ` - r ' r r r-�__� • r / � r - � I / \-- `� ■ J 8 "�tr \ i —` _i-- /� - r .L r \- I r+ 1 p yyy� /kI � ��jSv / 1 r f / // rr-� ! / - r I / V _- \ 1 \' \ \ \ i \ 1 \ 1 { I l { 1 1 I^ 1 1 { 1 1 S t I Ilt► y. r t { , I I I { I r ■. I L �+ r r \ 1 \ \ ■ err------ r r� ♦ ♦ � I ► li L ��r■�r��r �-�_;� - Ij ���o'+I•W�1�♦'� st \\ vj r III Q. �`��6Q rii='� �J 1 ♦ �yII I 'ip_r.+�� ir-.-1 � ♦_I r_ I ill 1 \ .. r -% _ r _ y r _ r �~ - - -! r ��■ ! II I I I ,t \ II 1 �r r rr.rrr r�vlp !�I I \.,~�♦Ir 1 f 14J. rr, l �_ \ 1 i . \\ 1 r�`� r■r r ` ♦1 \} \ i \\L11L I ♦�! rr Imo--""/�° ya \N 01 1 11] { �D/ E { 1 l Ir l 1 + \ II 1 MH B1 1/ \,\ / ; ,\I Id � \ / I I 1 1 I L 1 1 i � I I J l l j }I Is � {I � ��� /I ,Ila i► `� • a 1\ \\ 1 f I I vi � \� lr L I ♦ 1 1 1 1� I J J I r I I Jr J 1 111 y 1 1 t \' �_' —'r• f/�.� \II ��1\I11 11 � � i i �/� �Ir r r . �i 111\', \ r 1` \ -�� � ♦\ r �- �5-�- Jr 1`+�nn � 1 LI 11 1 1, 11111111j 11' I 1 [ It rn it \ ' � �� i 1 L � �'•L I r I rJ , t {j11t► I111y \ ,_� \�. '♦ I`I rrl Irf rrr JI j I I at } I1 { y11 It 1 ♦� `� I I I t 1 JI r' �I A� r l rlrJlr r l l l l l f l �� l i I r y rl J rr J rr rr f r`It rl f 1� 1 � ♦ I 1{ 1[ r I r ,` 1, 11 [ Ir fi J I I L \ r ♦ \ 1 ///► r II tpL\ ♦ ♦ r ♦ \ ♦ L • 1 1 f j V. \0I{� t \\ LII I SEE SHEET 3 OF 4 75� \ ' 11 rl i 1/ 1/ / hJ J/� r"t1 © 1'c+3� .� \ 1 \�� ♦+: r [ I l II Irrrll1 I/ \I-/ ;r / I/ `�' ♦ \ .4,0 1 y i y r 11 Il 1 1p'��a'A1D 1\r Ir r I I } 11 L\ 1 ' I-.—''�r 1�t {��ie'rw \ 1 1 '♦ LI i 11 t l l { 1 \ \ \ ' \♦'- ♦ ♦♦ ♦ I {mil { i au JUN 06 201J_1 �♦ �, r �'POr 1\ram\\L\♦t_\ \ - a OF FEDERAL ~' i i L\�L `♦� \`� i♦ R toAln� 1 t \L \♦\ \ \ \ r�� s1 �rCDS � 1,\.` `:aim-- iL la ti ♦ CAD NO. DATE 0 w 0 X 1 DESIGNED 1 JW 1511512W2 III I CHECKED {FIE L.A] CHECl[ED (HODi17) REGISTERED STAMP WASHINGTON STATE PARKS AND RECREATION COMMISSION DASH POINT STATE PARK RV SEWER HOOK-UPS ESC PLAN SCALE : V=50' 50 0 50 SHEET 1 OF 5 PARKS FILE# CAD NO. LEGEND: O CLEAN -OUT O R.V. HOOK-UP 4" PVC SEWER LINE O EXISTING MANHOLE NEW MANHOLE SILT FENCE DRAINAGE DITCH ® TRIANGULAR SILT DIKE O CAMPSITE DESIGNATION T.21N. R.M. W.M. SEC71ON 10, 14 do 15 KING & PIERCE COUNTY \ 1 \\ ] DF a ;, 11 10 9 ', ! ', \ I 1 51 43 18 NN 1 4 16"AL ! 5 A 1,Af 1 ,I I \ 1 a ,ALD \\ �� ' \I , 1►.� 4 D ' 18"DF _lk �'�I b _ /jr��.'_� • TAZD 1�D /' — ._'`� — \� i I IALD�. TI PLE- MPL "ALD // ALO r r - —�' ' r/ / O, DF 1 20'yALD I /J TRIANGULAR SILT DIKE SET BELOW CROSSING 1 0 "ALD I \\ & CULVERT I \ 1 \ ) 132 LD 1VDF/ _ "CTW / »ALD �J1 28"CTW / 1 I , RtSQSMITTED LD Ir —� N \\\\ I JUN'\\O 6 20 rl I cm OF F80ERAL W]4Y DESIGNED I JW 15115120121 DRAM ❑B 16h5r2012 CHECKED (FIELD) CHECKED (HDOTS.) REGISTERED STAMP WASHINGTON STATE PARKS AND is RECREATION COMMISSION DASH POINT STATE PARK RV SEWER HOOK-UPS ESC PLAN SCALE: 1 "=20' 2a o SHEET 2 OF 5 pARKSFILE# 20' [+T_1o7i•Aa LEGEND; O CLEAN -OUT G R.V. HOOK-UP 4" PVC SEWER LINE O EXISTING MANHOLE NEW MANHOLE SILT FENCE --�-� DRAINAGE DITCH ® TRIANGULAR SILT DIKE O CAMPSITE DESIGNATION T.21N. R 3E W.M. SEC71ON 10, 14 & 15 KING & PIERCE COUNTY 20- ' J 'L2"OF f \ 1 \ \ / --- r - r "ALD "�--- 'CTW , l ,, 1 r"1 o,p f\// i ter' 11Q.O1 O r�/rr f t LEO 28"CTW r + lli ■ r 1 12" DF r r rr F \14"pF I 4 4p 1 \ I ,� I III I I „'1 i �\ 1 ' / �] I ' co 2k ALD I, L I \ 1 7 75, r 1 DF31 \ ✓ `+ - _ _ - ` ' 1 ~ � r /1 ^� � 1\ ' i ' � \� y i i rl rl rr Ik r � ' \ l I 30"DF �r a \ f, _ ❑ 1 I r �00 qq t`CIIt Y OF FE CD5 R1�i. VVF�y \ ■ \\ -----1 'ALD - -, ❑ \ _� f t w 0 N K ACTION BY I DATE DESIGNED 3W 51/512012 DRAWN DB $11512012 CHECKED (FIELD) CHECKED (HOOTS,] REGISTERED STAMP WASHINGTON STATE PARKS AND is RECREATION COMMISSION DASH POINT STATE PARK RV SEWER HOOK-UPS ESC PLAN SCALE: 1 "=20' Esim 20' 0 20' SHEET 3 OF 5 PARKS FILE# I SAMPLE CON: ?UCTION SEQUENCE., 1. HOLD THE PRE -CONSTRUCTION MEETING. APPOINT EROSION AND SEDIMENT CONTROL (ESC) SUPERVISOR. 2. FLAG CLEARING LIMITS PER KCSWDM (1998, APPENDIX D:D-6TO D-7). FLAG WORK AREA LIMITS AS SHOWN ON THE ESC PLAN SHEETS. 3. INSTALL CATCH BASIN PROTECTION, TRIANGULAR SILT DIKES, AND SILT FENCES. 4. CLEAR AND GRUB AREAS OF THE SITE TO BE ROUGH -GRADED OR FILLED. • TREE REMOVAL OPERATIONS. • CLEARING: DO NOT GRUBIREMOVE STUMPS OUTSIDE TRENCH WIDTH. CUT STUMPS FLUSH WITH EXISTING GROUND SURFACE OUTSIDE TRENCH EXCAVATION. CHIP ALL TREES LESS THAN 10 INCHES IN DIAMETER TO CHIPS SEVERAL INCHES IN SIZE. USE CHIPS TO PROTECT ROOTS AND FOR MULCH TO BE USED AS A TEMPORARY COVER. • GRUB TRENCHLINES: GRUB TRENCH WIDTH ONLY DURING EXCAVATION. SET ASIDE TOPSOIL FOR RESTORATION. • PLACE EXCAVATED ORGANIC SOIL ASIDE DOWN SLOPE OF TRENCH EXCAVATION AND PLACE EXCAVATED MINERAL SOIL ASIDE UP SLOPE OF TRENCH EXCAVATION. • EXCAVATION OF TRENCHLINES: EXCAVATION IS LIMITED TO THE LENGTHS OF SANITARY SEWER PIPES AND FORCE MAINS THAT CAN BE INSTALLED AND RECOVERED APPROXIMATELY WITHIN ONE WORKING DAY. • TREE PROTECTION: SEE SPECIFICATIONS. 9. INSTALL GRAVITY SEWER A RV HOOKUPS. 10. MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH KCSWDM 1998 AND MANUFACTURER'S RECOMMENDATIONS. 11. RELOCATE SURFACE WATER CONTROLS OR EROSION CONTROL MEASURES, OR INSTALL NEW MEASURES SO THAT AS SITE CONDITIONS CHANGE, THE EROSION AND SEDIMENT CONTROL IS ALWAYS IN ACCORDANCE WITH THE KING COUNTY EROSION AND SEDIMENT CONTROL STANDARDS. 12. COVER ALL AREAS THAT WILL BE UNWORKED FOR MORE THAN SEVEN DAYS DURING THE DRY SEASON OR TWO DAYS DURING THE WET SEASON. 13. STABILIZE ALL AREAS AS SOON AS POSSIBLE UPON REACHING FINAL GRADE. 14. SEED ANY AREAS TO REMAIN UNWORKED, TO CONFORM WITH WET AND DRY SEASON REQUIREMENTS. 15. COMPLETE SITE RESTORATION IN ACCORDANCE WITH PLANS AND SPECIFICATIONS. 16. UPON COMPLETION OF PROJECT, STABILIZE ALL DISTURBED AREAS AND REMOVE BMPS. FILTER MEDIA UNDER GRATE JOINTS IN FILTER FABRIC SHALL BE SPLICED AT PG, USE STAPLES, WIRE RINGS, OR EQUIVALENT TO ATTACH FABRIC TO POSTS. Z)T BY 14 Ga. WIRE OR EQUIVALENT, IF STANDARD STRENGTH FABRIC USED Nam, I I I I MINIMUM 4k4' LJ LJ TRENCH �6' MAXMAX. ' WOOD POSTS, STEEL FENCE POSTS, REBAR, OR EQUIVALENT POST SPACING MAY BE INCREASED TO V IF WIRE BACKING IS USED NOTE: FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOUR WHENEVER POSSIBLE. 2. GEOTEXTILE FABRIC FOR THE SILT FENCE SHALL MEET SPECIFICATIONS LISTED IN KCSWDM (1998, APPENDIX D PAGE D-19). A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS SHALL BE AVAILABLE ON SITE. SILT DIKE UNIT CUT SECTION STAPLES STAPLES 3' to 6' JO TRENCH FLOW IN RG(`TIf)Al A_A NOTE: NOTE: POINT'A' MUST BE HIGHER THAN POINT'B' TO STAPLES SHALL BE PLACED WHERE ENSURE THAT WATER FLOWS OVER THE DIKE THE UNITS OVERLAP AND IN THE AND NOT AROUND THE ENDS. CENTER OF THE T UNIT AS SHOWN POINT A' ON THE DIAGRAMS. STAPLES PgINT "EI' I IE' ,ET PROTECTION SECTION B-B N.T.S. NOTE: TSD'S SHALL BE OF SUFFICIENT HEIGHT TO MAXIMIZE DETENTION, WITHOUT CAUSING WATER TO LEAVE DITCH. WHEN THE DEPTH OF THE ACCUMULATED SEDIMENT AND DEBRIS REACHES APPROX. ONE-THIRD OF THE TSD, THE DEPOSIT SHALL BE REMOVED. 3 TRIAAfG(JL4R SILT DIKE U§D FILTER FABRIC BACKFILL TRENCH WITH NATIVE SOIL OR 314'4 E WASHEDGRAVEL� 31E ro� J MINIMUM 47c4' TRENCH INSTALLATION 'A' FILTER FABRIC CHIPPED SITE VEGETATION MULCH. MIN. 4' DEPTH AND 1' WIDE FOR LENGTH OF SILT FENCE. � z OW 11 GAUGE WIRE STAPLES IN PLACE I �12-MIN. AS NECESSARY TO SECURE FILTER FABRIC. s SIL T FENCE N.T.S. INSTALLATION'B' TRIANGULAR SILT DIKE fTSD) NOTES: 1. INSTALL AND MAINTAIN THE TSD ACCORDING TO KCSWDM 20D5, APPENDIX D, PAGES D34 TO D-35. 2. TSD'S MUST BE MADE OF URETHANE FOAM SEWN INTO A WOVEN GEOSYNTHETIC FABRIC. S. THE GEOTEXTILE FABRIC OF THE TSD SHALL MEET GEOTEXTILE REQUIREMENTS FOR THE SILT FENCE FOUND IN KCSWDM 1998, APPENDIX D, PAGE D-19. 4. TSD'S ARE TRIANGULAR,10' TO 14' HIGH IN THE CENTER, WITH A 20' TO 26' BASE. A 2' APRON EXTENDS BEYOND BOTH SIDE OF THE TRIANGLE ALONG TTS STANDARD SECTION OF 7 FEET. A SLEEVE ATONE END ALLOWS ATTACHMENT OF ADDITIONAL SECTIONS AS NEEDED. 5. INSTALL TSD'S WITH ENDS CURVED UP TO PREVENT WATER FROM FLOWING AROUND THE ENDS. 6. ATTACH THE TSD AND THEIR FABRIC FLAPS TOTHE GROUND WITH WIRE STAPLES. WIRE STAPLES MUSTBE#11 GAUGE WIRE OR STRONGERAND SHALL BE 200mm TO 3DOmm IN LENGTH. 7. WHEN MULTIPLE UNITS ARE INSTALLED, THE SLEEVE OF FABRIC AT THE END OF THE UNIT SHALL OVERLAP THE ABUTTING UNIT AND BE STAPLED. RESUBMITTED JUN 0 6 2012 CITY OF FE©ERYAY &JEE-[ 4 OF 5 CAD NO. siteplan.dwg DATE DRAWN PROJECT ENGINEER WASHINGTON STATE PARKS Wllr AND RECREATION COMMISSION DASH POINT STATE PARK RV SEWER HOOK-UPS ESC PLAN SCALE AS SHOWN FILE NO. w 0 m w rc CITYOFFEDERAL K 2. EROSIONAND SEDIMENT CONTROL NOTES (REVISEDMW) THE IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, AND UPGRADING OF THESE ESC FACILITIES IS THE RESPONSIBILITY OF THE APPLICANTIESC SUPERVISOR UNTIL ALL CONSTRUCTION IS APPROVED. 3. THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED PRIOR TO OR IN CONJUNCTION WITH ALL CLEARING I AND GRADING SO AS TO ENSURE THAT THE TRANSPORT OF SEDIMENT TO SURFACE WATERS, DRAINAGE SYSTEMS, AND ADJACENT PROPERTIES IS MINIMIZED. 4 5 6. 7. B. 9. THE ESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTICIPATED SITE CONDITIONS. DURING THE CONSTRUCTION PERIOD, THESE ESC FACILITIES SHALL BE UPGRADED AS NEEDED FOR UNEXPECTED STORM EVENTS AND MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS I.E., ADDITIONAL SUMP PUMPS, RELOCATION OF DITCHES AND SILT FENCES, ETC.). THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE APPLICANTIESC SUPERVISORAND MAINTAINED TO ENSURE CONTINUED PROPER FUNCTIONING, WRITTEN RECORDS SHALL BE KEPT OF WEEKLY REVIEWS OF THE ESC FACILITIES DURING THE WET SEASON (OCT.1 TO APRIL 30) AND OF MONTHLY REVIEWS DURING THE DRY SEASON (MAY 1 TO SEPT. 30). ANY AREA OF STRIPPED VEGETATION, INCLUDING ROADWAY EMBANKMENTS, WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD OF 15 DAYS, SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC METHODS (I.E., SEEDING, MULCHING, PLASTIC COVERING, ETC.) ANY AREA NEEDING ESC MEASURES NOT REQUIRING IMMEDIATE ATTENTION SHALL BE ADDRESSED WITHIN FIFTEEN (15) DAYS. THE ESC FACILITIES ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED A MINIMUM OF ONCE A MONTH OR WITHIN FORTY-EIGHT (48) HOURS FOLLOWING A STORM EVENT. AT NO TIME SHALL MORE THAN ONE (1) FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITHIN A CATCH BASIN. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT4ADEN WATER INTO THE DOWNSTREAM SYSTEM. 10. WHERE STRAW MULCH FOR TEMPORARY EROSION CONTROL IS REQUIRED, IT SHALL BE APPLIED ATA MINIMUM THICKNESS OF TWO INCHES. IN NOTES 2 & 6, 'APPLICANT' REFERS TO CONTRACTOR PROJECT EROSIONAND SEDIMENT CONTROL NOTES: 1. THE ESC PLAN INCLUDES THE CITY OF FEDERAL WAY TIR. 2. THE ESC PLAN, WHICH CONSISTS OF THE SITE IMPROVEMENT PLAN AND THE TIR, SHALL BE KEPT ON SITE. 3. THE CONTRACTOR SHALL DESIGNATE AN ESC SUPERVISOR WHO IS RESPONSIBLE FOR MAINTENANCE AND REVIEW OF ESC FOR COMPLIANCE WITH ALL PERMIT CONDITIONS RELATING TO ESC. THE ESC SUPERVISOR SHALL DOCUMENT ESC MEASURES ACCORDING TO KCSWDM (1998, APPENDIX D, PAGES D43 TO D45). 4. MAINTENANCE AND MONITORING REQUIREMENTS OF THE ESC MEASURES FOR THE CITY OF FEDERAL WAY SHALL BE ACCORDING TO KCSWDM (1998, APPENDIX D, PAGE D43). ALL ESC MEASURES SHALL BE MAINTAINED AND REVIEWED ON A REGULAR BASIS AS PRESCRIBED IN THE MAINTENANCE REQUIREMENTS FOR EACH BMP IN KCSWDM (1998, APPENDIX D). THE ESC SUPERVISOR SHALL REVIEW THE SITE AT LEAST ONCE A MONTH DURING THE DRY SEASON AND WEEKLY DURING THE WET SEASON AND WITHIN 24 HOURS OF SIGNIFICANT STORMS. WRITTEN INSPECTION RECORDS COULD BE REQUIRED BY THE CITY OF FEDERAL WAY ACCORDING TO KCSWDM (1998, APPENDIX D, PAGE D43). 5. THE CONTRACTOR SHALL FOLLOW SPECIAL WET SEASON ESC PROVISIONS ACCORDING TO KCSWDM (1998, APPENDIX D, PAGES D41 TO D42). SEE THE LIST OF WET SEASON SPECIAL PROVISIONS ON THIS SHEET. ADDITIONAL ESC NOTES CONTD: B. DURING CONSTRUCTION, THE CONTRACTOR SHALL MAINTAIN THE FLOW IN THE EXISTING DRAINAGE CHANNEL IN THE LOWER CAMP LOOP AND RESTORE THE CHANNEL WHEN CONSTRUCTION IS COMPLETED, WITH APPROVAL BY THE PROJECT ENGINEER 9. MULCH SHALL BE USED AS TEMPORARY COVER DURING THE WET AND DRY SEASONS TO PROTECT SLOPES AND STOCKPILES 3H:V10R STEEPER WITH MORE THAN 10 FEET OF VERTICAL RELIEF IFTHEY ARE UNWORKED FOR MORE THAN 12 HOURS. THE MULCH SHALL BE APPLIED AND MAINTAINED ACCORDING TO KCSWDM (1998, APPENDIX D, PAGE D-9), 10. TEMPORARY COVER FOR PERIODS OF 30 DAYS OR LESS SHALL BE MULCH OR WITH THE APPROVAL OF THE PROJECT ENGINEER OTHER TEMPORARY COVER ACCORDING TO KCSWDM (1996, APPENDIX D, PAGES D3 TO D-17). 11. THE TEMPORARY COVER SEED MIX SHALL BE TEMPORARY EROSION CONTROL SEED MIX(KCSWDM 1998, APPENDIX D, PAGE D-14). THE SEED MIX SHALL BE APPLIED ATA RATE OF 120 POUNDS PER ACRE. THE FERTILIZER FOR SEEDING OUTSIDE OF SENSITIVE SETBACK AREAS IS A 10.20.20 N-P-K FERTILIZER WITHIN SENSITIVE AREA SETBACKS, THE SEEDING FERTILIZER SHALL BE SLOW -RELEASE LOW PHOSPHORUS FERTILIZER (TYPICAL PROPORTIONS 3-1-2 N4'-K). FERTILIZER SHALL BE APPLIED ATA RATE OF 90 POUNDS PER ACRE. 12. TEMPORARY COVER MEASURES SHALL BE MAINTAINED ACCORDING TO KCSWDM (1998, PAGES D3 TO D-17).. 13. SOILS SHALL BE STABILIZED AT THE END OF THE SHIFT BEFORE A HOLIDAY OR WEEKEND, IF NEEDED, BASED ON THE WEATHER FORECAST ACCORDING TO THE SWMMWW VOLUME I -MINIMUM TECHNICAL REQUIREMENTS, (2005, PAGE 2.18). 14. HYDROSEEDING IS ALLOWED ACCORDING TO KCSWDM (1998, PAGE D-14). 15. OTHER TEMPORARY COVER MEASURES CAN BE USED ACCORDING TO KCSWDM (1998, PAGES D-B TO D-17) 16. DEWATERING SHALL BE PERFORMED PER NOTE 11 OF THE WET SEASON SPECIAL PROVISIONS ON THIS SHEET. ADDITIONALLY, THE USE OF BAKER TYPE SEDIMENT SETTING CAN BE USED WITH THE APPROVAL OF THE ENGINEER. THE REQUEST FOR APPROVAL SHALL BE A WRITTEN PLAN. 17. EXISTING DRAINAGE DITCHES, CULVERTS, ETC. SHALL BE KEPT CLEAN AT ALL TIMES. ANY DRAINAGE CULVERT, CATCH BASIN, MANHOLE, OR OTHER DRAINAGE STRUCTURE DISTURBED BY EXCAVATION SHALL BE REPLACED WITH NEW MATERIAL OR REPAIRED TO THE SATISFACTION OF THE ENGINEER TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE EMPLOYED TO PROTECT ADJACENT PROPERTY, WETLANDS, AND STORM DRAIN FACILITIES. 18. CLEAN MATERIAL REMOVED FROM TRIANGULAR SILT DIKES (TSD), SILT FENCES, AND INLET PROTECTION SHALL BE STABILIZED ON -SITE WITH THE APPROVAL OF THE PROJECT ENGINEER. 19. ANY SEDIMENT THAT IS TRACKED ONTO PAVED PARK ROADS SHALL BE REMOVED IMMEDIATELY BE SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING SHALL BE REMOVED FROM THE SITE. CONTROL DUST ACCORDING TO KCSWDM (1998)AND SWMMWW, VOLUME II (2005, PAGE 440 TO441). NO ADDITIVES SHALL BE USED IN WATER TO CONTROL DUST. 20. INLET PROTECTION INSERTS SHALL BE MAINTAINED ACCORDING TO KCSWDM (1990, APPENDIX D, PAGES D31 TO D32). SILT FENCE SHALL BE MAINTAINED ACCORDING TO KCSWDM (1998, APPENDIX D, PAGE D-19). TRIANGULAR SILT DIKES SHALL BE MAINTAINED ACCORDING TO KCSWDM (2005, APPENDIX D, PAGES D-34 TO D-35.) 21. THE CONTRACTOR SHALL PERFORM FINAL STABILIZATION AT THE SITE AS SOON AS POSSIBLE AFTER WORK IN AN AREA IS COMPLETE ACCORDING TO KCSWDM (1998, APPENDIX D, PAGES D44 TO D45) AND THE SITE RESTORATION PLAN PRIOR TO FINAL ACCEPTANCE. THE ESC SUPERVISOR TOGETHER WITH THE PARK MANAGER SHALL REVIEW LOCATIONS WHERE ESC MEASURES WILL BE RETAINED DURING ESTABLISHMENT OF FINAL COVER OF VEGETATION. SEE THE SITE RESTORATION PLANS, DWGIFS L-1 THRU L-9, FOR FINAL STABILIZATION. 22. PERMANENT SEEDING SHALL BE MAINTAINED ACCORDING TO KCSWDM (1998, PAGES D-13 TO D-17). 23. CONTROL POLLUTANTS ACCORDING TO SWMMWWVOLUME I - MINIMUM TECHNICAL REQUIREMENTS (2005, PAGES 2-20 TO 2-21). DO NOT DISCHARGE WASH WATER OR ANY WASTEWATER TOON-SITE TREATMENT SYSTEMS. 24. HANDLE CONCRETE ACCORDING TO SWMMWW VOLUME II - CONSTRUCTION STORMWATER POLLUTION PREVENTION (2DD5, PAGE 443). 25. HANDLE SAW CUTTING AND SURFACE OPERATIONS ACCORDING TO SWMMWW, VOLUME II - CONSTRUCTION STORMWATER POLLUTION PREVENTION (2005, PAGE 444). 26. DELIVER, STORE, AND CONTAIN MATERIALS TO PREVENT DISCHARGE OF POLLUTANTS ACCORDING TO SWMMWW VOLUME II - CONSTRUCTION STORMWATER POLLUTION PREVENTION (20D5, PAGES 445 TO 446). WET SEAS SPECIAL PROVISIONS PAGES -41 TO yEiJDlx D. ALL OF THE FOLLOWING PROVISIONS FOR WET SEASON CONSTRUCTION ARE DETAILED IN THE REFERENCED SECTIONS. 1. THE ALLOWED TIME THATA DISTURBED AREA CAN REMAIN UNWORKED WITHOUT COVER MEASURES IS REDUCED TO TWO DAYS, RATHER THAN SEVEN (SECTION DA.2). 2. STOCKPILES AND STEEP CUT AND FILL SLOPES ARE TO BE PROTECTED IF UNWORKED FOR MORE THAN 12 HOURS (SECTION DA.2). 3. COVER MATERIALS SUFFICIENTTO COVERALL DISTURBED AREA TO BE STOCKPILED ON SITE (D.4.2). 4. ALL AREAS THATARE TO BE UNWORKED DURING THE WET SEASON SHALL BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WETSEASON (SECTION 0} 5. MULCH IS REQUIRED TO PROTECT ALL SEEDED AREAS (SECTION 0). 6. FIFTY LINEAR FEET OF SILT FENCE (AND NECESSARY STAKES) PER ACRE OF DISTURBANCE MUST BE STOCKPILED ON SITE (SECTION DA.3.1). 7. SEDIMENT RETENTION IS REQUIRED UNLESS NO OFFSITE DISCHARGE IS ANTICIPATED FOR THE SPECIFIED DESIGN FLOW (SECTION D.4.5). 8. SURFACE WATER CONTROLS ARE REQUIRED UNLESS NO OFFSITE DISCHARGE IS ANTICIPATED FOR THE SPECIFIED DESIGN FLOW (SECTION 0). 9. PHASING AND MORE CONSERVATIVE BMPS MUST BE EVALUATED FOR CONSTRUCTION ACTIVITY NEAR SURFACE WATERS (SECTION D.5.3). 10. ANY RUNOFF GENERATED BY DEWATERING SHALL BE TREATED THROUGH CONSTRUCTION OF A SEDIMENTTRAP (SECTION DA.5.1) WHEN THERE IS SUFFICIENT SPACE OR BY RELEASING THE WATERTO A WELL -VEGETATED, GENTLY SLOPING AREA SINCE PUMPS ARE USED FOR DEWATERING, IT MAYBE POSSIBLE TO PUMP THE SEDIMENT -LADEN WATER WELL AWAY FROM THE SURFACE WATER SO THAT VEGETATION CAN BE MORE EFFECTIVELY UTILIZED FOR TREATMENT. A STRAW BALE FILTER SHALL BE PLACED MOUND THE DISCHARGE FROM THE DEWATERING PUMP. ITTHERE IS NOT SPACE FORA SEDIMENT TRAP OR 25 FEET OF SUITABLE VEGETATION, OTHER INFILTRATION METHODS SHALL BE REQUIRED CONSISTENT WITH KCC 9.11 11. THE FREQUENCY OF MAINTENANCE REVIEWS INCREASES FROM MONTHLY TO WEEKLY (SECTION D.5A). WSP&RC SPECIAL PROVISION• 1. THE CONTRACTOR SHALL PROVIDE A WEEKLY UPDATE VIA BAWL ONE WEEK ADVANCE OF PROPOSED CONSTRUCTION ACTIVITIES. 2. THE WEEKLY UPDATE SHALL BE PROVIDED TO THE OWNER'S DESIGNATED REPRESENTATIVE. THE CONTACT NAME AND E-MAIL ADDRESSES FOR THE ABOVE CONTACTS WILL BE PROVIDED AT THE PRECONSTRUCTION CONFERENCE. RESUBMIT TE JUN 062012 SHEET 5OF5 CAD NO. siteplan.dwg ACTION DESIGNED DRAM CHECKED; PROJECT ENGINEER WASHINGTON STATE PARKS wh AND RECREATION COMMISSION DASH POINT STATE PARK RV SEWER HOOK-UPS ESC PLAN SCALE NO SCALE FILE NO. a z 0 N w w 1E RA -TECH/ KCIVI CAD NO.Al 0001 — I \FILE -DWG 2U FiAh Ameme Sv MH-2 Wask4ton S MH-3 159 DWG- —FOR 158 ..��5tt GRAVEL DRIVEWAY - f57 SECTION ELEoTnir-AL cowRoL 5 WILDING" _4� . . . 7, - ---- ---- -- P, ___p_p—p�!!mj VALVE VAULT.p _ p z p 154 _SEE- SCfiEDULE -A- DWG A3 -AND'FOR SEWER LINE PLAN PRORLE 'Z MAIN PUMP STATION, SILT FENCE MPS-3 X G TREE DENOTE SEE DWG S E TO BE R E)A .7 wErLAND BOUNDARY —,- -A. PLAN r 0 20' . . . . . . . . . . 10 Dw ......... ...... ......... ...... .... .. ... 165 . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ci: . . . . . . . . . k". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ril? L'j 1D fAj . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......... .... ................................. ........... ........ ...................... ................. RAV" sa .......... ........... ......... Aw. . . . . . . . . LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .................... . . co ................... ............ .................. ........... ............ ......... . ..... . .......... . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... .... 150 ................. ......... ........ ....... ................ ....... . ........................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S�—_0.0169 Ellt I . . . . . . . . . . . . . . . . . . . . . . ..... 145 ............. ... ..... ............ . ....... ......... ........... ....... ........ ................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 140 .............. ...... ........ ............. ............ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 135 PROFILE SHEET X OF X l'-1 0' HORIZ 1--5' VERT ACTION I BY I DATE DESIGNED AAA 01/01 01 DRAWN AAA 01,/01,/D1 CHECKED (FIELD) AA CHECKED (HDOTS.) A G 1 0oi;' PROJECT ENGINEER WASHINGTON STATE PARKS AND RECREATION COMMISSION DASH POINT STATE PARK SCHEDULE B MAIN PUMP STATION SITE PLAN AND PROFILE MPS-1 SCALE FILE NO. J r TETRA TECHI KCM CAD NO-A1 0001 - 1 \FILE.DWG r ._. � 1420 FdlhAv,¢nue5 r •L Seetlbe; WJishGghJn ,,, X 1 sueaessnv F=20s-t-301 - WALL -OPENING FOR- -PORTABLE GENERATOR _• .- "-• SLOPE 2' WIDE CONCRETE - . + PLUG. SEE 4/MPS-4 SKIRT AWAY FROM.- ••' ~� BUILDING"AT 2% ALL J fj0 n r AROUND, SEE 4/MPS-4- _ -o' PRECAST-CONCTETE z ELECTRICAL CONTROL �- •- ACTION BY DATE BUILDING. FF EL 153.5 "' - - .. - }57 �. —...�.. —..-- —... �. - J - - •"—�-���' DESIGNED AAA 01/01 /D1 - ' y�`��• .. - f • - '• .. _. _ _ DRAWN AAA 01 01 01 - _ _.---15Fx _- `" /{• v • - - ' _ - •�1� - -_r — - •• •- ' CHECKED (FIELD) Ol /01 O1 CHECKED HDOTS_) 01 /01 "01 - _ ... ... _- _ _ 1-F00 - - - 'OUTSIDE CORNER OF BLDG • - A !DE 'CORNER BLDG - - N 119151.96 N 119157•.-12' E 1249294.30 - - 155 rr r �� E 1249305.52 ri r • rsr -/ SFII _ , SF1F—*— sFy.�— �gp/__: wm am .9Fir . _ Sf1F 9fll-- - _ - -gy _ _ 4y.— . _ .... -- sF sFw- • /ter \` _ .. 154 - -• -. ,�; _ :sue` ! .-TRANSFORMER, SEE INti� rr � _ '• - s _ l _ ELECTRICAL DRAWINGS _ �. p- P P P P P P P P—F p~--.PP^�p _ F3F -' - _ _. PROJECT ENGINEER 4 _ ' WASHINGTON STATE If 152- r \ CORNER- OF VALVE VAUL - G - - rirr N, 119-136.98 - - PARKS ti E 1249309.74. - - - - - — AND CORNER OF VALVE VAULT N 119135.a rr RECREATION E 1249298.79 —'— — 451 — _..... -- COMMISSION ELECTRICAL CONDUITS - • - 152,6 r f r FROM CONTROL BUILDING I� TO PUMP STATION, SEE -ri - 1� ELECTRICAL PLAN AS ; 1 - 1 1 152-5 —� DASH POINT - �' {� HANDHOLE, SEE STATE PARK / - - - f ELECTRICAL DRAWINGS - -- ENTER OF PUMA STAn✓✓oYYN 4� f., I;� - t ;�` SCHEDULE B N ''1 19129.73 j ti r/ E 1'249313.85 s'� �.:• ,�� _ w MAIN PUMP :�•_, _ -- STATION 2 = - ---� f`� ' F -- h r WE11/ w BOUNDARY l +4 ` 1A$ ' _`_,ti DETAILED SITE PLAN MPS-2 � SCALE 0 iv SHEET X OF X w f FILE NO. FLOW DEFLECTOR SHIELD, SEE DETAILS 5 AND 6, DWG PS-5 - 4'HDPE FORCEMAIN - HATCH OPENING ISEE SITE PLAN / ABOVE HATCH DRAIN 4"DI FLANGEDA4i FTITINGS - I z- 4'x6' DOUBLE LEAF (H-20 RATED) ACCESS HATCH CAST IN 8' THICK OVERSIZED TOP SLAB MAIN PUMP STATION PLAN 1 -- 10.5'x6.5' PRECAST CONCRETE ELECTRICAL I I CONTROL BUILDING I; I II I I i V-0" 12x12" 6" CONIC SKIRT. I I ; o WALL VENT SLOPE 2% ALL I I I AROUND 1 4" FLANGE 1 COUPLING ADAPTER 4" CHECK PRESSURE GAUGE, EL 152.85 VALVE 2 PLACES L -�•• EL 152.6 EL 152.5 m �a°-• db--r•�:� - — - �u 1p e° 63 e° 4" ECCENTRIC ;s.. f PLUG VALVE - - - 8" CRUSHED SURFACING D TOP COURSE UNDER ALL STRUCTURES rn r PIPE SUPPORT, !7i EL 147.0 4 PLACES REME HIGt 3"DI DRAIN, ER ALARM EL i45.5 SLOPE 2% MIN ec v1HILA n� LEAD PUMP START WS EL 144.5 STOP ALL PUMPS WS EL 143.5 LOW WATER ALARM EL 142.5 8"PVC GRAVITY SEWER 8"DI PIPE STUB GROUTED INTO MANHOLE WALL 4— PERSONNEL/EQUIPMENT HOIST SLEEVE, SEE 1/PS-4 I� 24'DIA LOCKING MANHOLE RING AND COVER, j SEE DIET I ACCESS LADDER, SEE 3/PS-4 I '- HATCH OPENING ABOVE �L 8'ID MANHOLE 4'x5' DOUBLE LEAF (H-20 RATED) ACCESS HATCH CAST IN 8" THICK OVERSIZED TOP SLAB, SEE DETAIL (316 GRADE) PUMP GUIDE RAILS BY PUMP MFR 0 IE 147.5 3' ELASTOMERIC CHECK VALVE SECTION 2 PUMP DISCHARGE BASE BY PUMP MFR 1 /2'-l'-O" EL 152-5 —FINI5ti GRADE EXISTING GROUNDUNE UNABOND CONCRETE WALLS AND TOP SLAB BEGINNING 1 FOOT ABOVE BOTTOM OF MANHOLE �TETRA TE(' " KCM CAD NO.A1 0001 - 1 \1-ILE_DWG 1420 Fifth .Wanue : 0 Seattle, Washington Bo wl w 206-M3-M Fu 21168W 9301 Q 0 SHEET X OF X ACTION BY DATE DESIGNED AAA 101 /01 �01 M WN AAA 10-1/01 /01 CHECKED (FIELD) AAA ❑ 1 /O I /n I PROJECT DJGINEER WASHINGTON STATE PARKS AND is RECREATION COMMISSION DASH POINT STATE PARK I SCHEDULE B MAIN PUMP STATION MECHANICAL PLAN AND SECTION MPS-3 SCALE FILE NO. 165 160 155 150 145 .j I I oD In ` - ,V COMPACTED �� I CRUSHED ROCK TOP COURSE �! I .Fi I - - -- COMPACTED SU13GRADE I 1 QUARRY SPALL BASE SECTION AT STA 10+70 ACCESS ROAD CROSS SECTION 1 1'=5' HOR1Z 1 "=2.5' VERT MAIN PUMP STATION TOP SLAB REINF DETAILS s 1/2"-1'-0" - VALVE VAULT TOP SLAB REINF DETAILS 2 1/2.=1'-0" INTERIOR WALL 3/4" GALV BOLT, WASHER AND NUT-•- B"HDPE BLIND FLANGE WITH 7/8" BOLT HOLES TOP AND BOTTOM B" FLxDI WALL SLEEVE CAST INTO PRECAST BUILDING WALL COORDINATE WITH BUILDING MANUFACTURER. LOCATE CENTER OF HOLE 1'-0" FROM CORNER WHERE SHOWN ON DWG MPS-2 1" GALV WING NUT BOLT. TAP WALL SLEEVE TO ACCEPT WING NUT TETRA TEf "'! KCM CAD NO_A 1 0001 - 1 \FILE.DWG 1420 Fifth Avenue S .] Seattle, Washington 5,..,.1U!j w 206893-9300 P. 2e6­1163-9301 a 0 ACTION BY DATE DESIGNED DRAWN qAA 19 1 /01 01 CHECKED (FIELD) AAA ID, /01/Ot PROJECT ENGINEER WASHINGTON STATE PRECAST CONCRETE ELECTRICAL CONTROL PARKS BUILDING U if AND EXTERIOR WALL 4 RECREATION ° COMMISSION 1 I I DASH POINT STATE PARK i I 3 1/2" CONCRETE j SEW.ANT r SKIRT W/ 6x6x#10 n - p 2EkIQlODI END JOINT BU BUILDING F ALL AROUND SCHEDULE B FlI 21-0" MAIN PUMP STATI O N 4 � 2% SLOPE 4. - A- Q. WALL OPENING FOR PORTABLE GENERATOR 4 S H EET X O F X 3"=1'-O' - MISCELLANEOUS DETAILS SCALE MPS-4 FILE NO. 5 a TETRA TEGH/ KCM 1420 FIM Avanuo SLO Fu,M641a. -vl SEE EN THIS SH, ......... -7—:7--7 Z- 'ID — — — — — — — — — — J6 M%RX, ..7 0 IL 341 POGHD x LEVIUL r 10' G- tis-2 SHEET X OF X CAD NO ACTION I BY I DATE DESIGNED sF LILINE .20D6 DRAWN lg�AdJUNE 2006 CHECKED (FIELD) I I I PROJECT ENGINEER WASHINGTON STATE PARKS AND li RECREATION COMMISSION DASH POINT STATE PARK SCHEDULE B MAIN PUMP STATION ELECTRICAL SITE PLAN MPS-5 SCALE FILE NO.