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Permit L06-080 - SOUND TRANSIT / TOWNSEND CHRIS - SOUTHCENTER BOULEVARD STREET IMPROVEMENTS
SOUND TRANSIT SAO CHRIS TOWNSEND TIB&SCBV I,06-080 Ciy of Tukwila Department of Community Development NOTICE OF DECISION TO: Chris Townsend, Applicant for Sound Transit King County Assessor, Accounting Division Washington State Department of Ecology Steven M. Mullet, Mayor Steve Lancaster, Director June 7; 2007 This letter serves as a notice of decision and is issued pursuant to TMC 18:104.70 on the following project and permit approval. I. PROJECT INFORMATION Project File Number: L06-080 Applicant: Chris Townsend, Applicant for Sound Transit Type of Permit Applied for: Sensitive Area Special Permission Project Description: Sound Transit, in conjunction with the City of Tukwila proposes to widen Southcenter Boulevard approximately 20 feet from 32nd Avenue South to 53rd Avenue South to accommodate automobile, pedestrian and bicycle traffic and rail support structures associated with the Central Link Light Rail project. As part of this work improvements will be made to the stormwater drainage collection and conveyance system. Gilliam Creek and three of its tributaries as well as two Type 3 wetlands will be temporarily or permanently affected by the construction. Temporary impacts will be restored to pre -project conditions and permanent mitigation will occur within the Gilliam Creek ravine. H. DECISION Sound Transit has acted as the lead agency for environmental review in a series of Environmental Impact Statements for the Tukwila Freeway Route project and Tukwila will adopt those documents unchanged to satisfy SEPA requirements for this work. The Community Development Director has determined that the application for special permission complies with applicable City and state code requirements and has approved that application based on the findings and conclusions contained in the staff memorandum. NG Q:\Light Rail\SCBL SpecPertmi\NOD_SCBL.doc Page 1 of 3 06/06/2007 4:27:00 PM 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206-431-3670 • Fax: 206-431-3665 • • III. YOUR APPEAL RIGHTS The Decision on this Permit Application is a Type 2 decision pursuant to Tukwila Municipal Code § 18.104.010. Other land use applications related to this project may still be pending. One administrative appeal to the Planning Commission of the Decision on the Permit itself is permitted. A party who is not satisfied with the outcome of the administrative appeal process may file an appeal in King County Superior Court from the Planning Commission decision. IV. PROCEDURES AND TIME FOR APPEALING In order to appeal the Community Development Director's decision on the Permit Application, a written notice of appeal must be filed with the Department of Community Development within 21 days of the issuance of this Decision, that is by June 28, 2007. The requirements for such appeals are set forth in Tukwila Municipal Code 18.116. All appeal materials shall be submitted to the Department of Community Development. Appeal materials MUST include: 1. The name of the appealing party. 2. The address and phone number of the appealing party; and if the appealing party is a corporation, association or other group, the address and phone number of a contact person authorized to receive notices on the appealing party's behalf. 3. A statement identifying the decision being appealed and the alleged errors in the decision, including any specific challenge to an MDNS. 4. The Notice of Appeal shall identify (a) the specific errors of fact or errors in application of the law in the decision being appealed; (b) the harm suffered or anticipated by the appellant, and (c) the relief sought. The scope of an appeal shall be limited to matters or issues raised in the Notice of Appeal. 5. Appeal fee of $205. V. APPEAL HEARINGS PROCESS Any administrative appeal regarding the Permit shall be conducted as an open record hearing before the Planning Commission based on the testimony and documentary evidence presented at the open record hearing. The Planning Commission decision on the appeal is the City's final decision. Any party wishing to challenge the Planning Commission decision on this application must file an appeal pursuant to the procedures and time limitations set forth in RCW 36.70C. An appeal challenging a DNS, an MDNS or an EIS may be included in such an appeal. If no appeal of the decision is properly filed in Superior Court within such time limit, the Decision on this permit will be final. VI. INSPECTION OF INFORMATION ON THE APPLICATION Project materials including the application, any staff reports, and other studies related to the permits are available for inspection at the Tukwila Department of Community Development, 6300 Southcenter Blvd., NG Q:\Light Rail\SCBL SpecPerm\NOD_SCBL.doc Page 2 of 3 06/06/2007 4:27:00 PM • • Suite 100, Tukwila, Washington 98188 from Monday through Friday between 8:30 a.m. and 5:00 p.m. The project planner is Nora Gierloff, who may be contacted at 206-431-3670 for further information. Property owners affected by this decision may request a change in valuation for their property tax purposes. Contact the King County Assessor's Office for further information regarding property tax valuation changes. Dep nt of Community Development City Tukwila NG Q:\Light Rail\SCBL SpecPerm\NOD_SCBL.doc Page 3 of 3 06/06/2007 4:27:00 PM • • -to- , ,...„......... , .4 --.1;,.....g. , --A-A-(i-,---N,,, • 1" ' co LL1 i Lui ____......-- (.) , _i_._. . NC; - ; ';(- ----i-----1-.--------------(ni c\I. . .......1 LrY---- ii SOVTNCENT BLVD -1 , • • • S1154T SEATTLE w. TACOMA I NTIL v AIRPORT 00 1 PROJECT LOCATION MAP i Dept. Of Community Development City of Tukwila AFFIDAVIT OF DISTRIBUTION I , d'HEREBY DECLARE THAT: UUi CUL* Notice of Public Hearing Project Number: L. ©C.Q - 0 S 0 Determination of Non -Significance Person requesting mailing: A6 140L. &A 1* Notice of Public Meeting Mitigated Determination of Non - Significance Board of Adjustment Agenda Pkt Determination of Significance & Scoping Notice Board of Appeals Agenda Pkt Notice of Action Planning Commission Agenda Pkt Official Notice Short Subdivision Agenda Notice of Application Shoreline Mgmt Permit Notice of Application for Shoreline Mgmt Permit _ FAX.To Seattle Times Classifiedsj'Jhc.. PO Box 70 = Seattle WA 98111 her tMullerClassifiedsi �� Was mailed to each of the addresses listed on this r. day of -S u Qin the year 2001 P:\ADMINISTRATIVEFORMSiFORMSIAFFIDAVITOFDISTRIBUTION Project Name: 0 L&_P/1d (641-44T Project Number: L. ©C.Q - 0 S 0 Mailer's Signature: LAdttAE: Person requesting mailing: A6 140L. &A 1* P:\ADMINISTRATIVEFORMSiFORMSIAFFIDAVITOFDISTRIBUTION FEDERAL AGENCIES (PLU.S. ARMY CORPS OF ENG RS () FEDERAL HIGHWAY ADMIN ATION ( ) DEPT OF FISH & WILDLIFE () U.S. ENVIRENTAL PROTECTION AGENCY () U.S. DEPT .U.D. () NATIONAL INE FISHERIES SERVICE WASHINGTON STATE AGENCIES () DEPT OF SOCIAL & HEALTH SERV. () DEPT OF ECOLOGY. SHORELAND DIV )DEPT OF ECOLOGY, SEPA DIVISION* OFFICE OF ATTORNEY GENERAL CHKLIST W/ DETERMINATIONS SITE MAPS WITH DECISION () OFFICE OF ARCHAEOLOGY ( ) TRANSPORTATION DEPARTMENT () DEPT NATURAL RESOURCES () OFFICE OF THE GOVERNOR () DEPT OF COMM. TRADE & ECONOMIC DEV. 0 DEPT OF FISHERIES & WILDLIFE X KING COUNTY AGENCIES • SEND • SEND () BOUNDARY REVIEW BOARD () FIRE DISTRICT #11 () FIRE DISTRICT #2 () ICC. WASTEWATER TREATMENT DIVISION () KC. DEPT OF PARKS & REC ,01 KC. ASSESSORS OFFICE ( ) TUKWILA SCHOOL DISTRICT () TUKWILA LIBRARY () RENTON UBRARY () KENT UBRARY () CITY OF SEATTLE UBRARY () QMIEST () SEATTLE CITY LIGHT () PUGET SOUND ENERGY () HIGHUNE WATER DISTRICT () SEATTLE WATER DEPARTMENT ( ) AT&T CABLE SERVICES SCHOOLS/LIBRARIES () KENT PLANNING DEPT ( ) TUKWILA CRY DEPARTMENTS: () PUBLIC WORKS () FIRE ()POUCE ()FINANCE () PLANNING () BUILDING () PARKS & REC. () MAYOR () CITY CLERK UTILITIES CITY AGENCIES ( ) HEALTH DEPT () PORT OF SEATTLE ( ) KC. DEV & ENVIR SERVICES-SEPA INFO CNTR ( ) KC. TRANSIT DIVISION - SEPA OFFICIAL ( ) KC. LAND & WATER RESOURCES ( ) FOSTER LIBRARY ( ) K C PUBLIC UBRARY ( )HIGHLINE SCHOOL DISTRICT ( ) SEATTLE SCHOOL DISTRICT () RENTON SCHOOL DISTRICT ( ) OLYMPIC PIPELINE ( ) VAL-VUE SEWER DISTRICT ( ) WATER DISTRICT #20 ( ) WATER DISTRICT #125 ( ) CITY OF RENTON PUBLIC WORKS () BRYN MAWR-LAKERIDGE SEWERNVATER DISTRICT () RENTON PLANNING DEPT () CITY OF SEA -TAC () CITY OF BURIEN ( ) TUKWILA PLANNING COMMISSION MEMBERS ( ) TUKWILA CITY COUNCIL MEMBERS () CITY OF SEATTLE - SEPA INFO CENTER - DCLU () STRATEGIC PLANNING OFFICE' • NOTICE OF AU. SEATTLE RELATED PLNG PROJ. OTHER LOCAL AGENCIES ( ) PUGET SOUND REGIONAL COUNCIL ( ) SW K C CHAMBER OF COMMERCE 4MUCKLESHOOT INDIAN TRIBE ( ) CULTURAL RESOURCES PROGRAM FISHERIES PROGRAM ( ) WILDLIFE PROGRAM MEDIA ( ) SEATTLE TIMES ( ) SOUTH COUNTY JOURNAL P:WDMINISTRATNEIFORMS\CHKLIST.DOC b BUWAMISH INDIAN TRIBE () .S. AIR POLLUTION CLEAN AGENCY 0 SOUND TRANSIT () UWAMISH RIVER CLEAN-UP COALITION 'SENO NOTICE OF ALL APPUCATIONS ON OUWAMISH RIVER ( ) HIGHLINE TIMES ( ) CI.TUKWILA.WA.US.WWW JyIJl.Jl..rly- \-V a avL arai us-Iaa Fav a, vat v SEPA MAILINGS • Mail to: (comment period starts on date of mailing) Dept. of Ecology Environmental Review Section 'Applicant 'Other agencies as necessary (checked off on attached list) *Any parties of record • send only the staff report, site plan and the SEPA Determination KC Transit Division.— SEPA Official would ince to receive information about all projects that might affect transit demand Send These Documents to DOE: SEPA Determination (3 -part from Sierra) Findings (staff report, usu. with MDNS) SEPA Checklist (filled out by applicant). Drawings/Plans of project (site plan, elevations, etc. from PMT's) Affidavit of Distribution (notice was mailed or sent to newspaper) SHORELINE MAILINGS: Notice ofAppllcatlon for a Substantial Development Permit must be mailed to owners and to property owners within 500 feet of subject property, comments are due 30 days after the notice of application is mailed/posted. The notice of Application for Shoreline Substantial Development Permit must include a statement that any person desiring to submit written comments on the application or desiring to receive notification of the final decision on the application may do so within 30 days of the notice of application. If a hearing will be held on the application, the hearing notice must include the information that written comments may be submitted, or oral presentation made at the hearing. Shoreline Permit Notice of Decision Mail to: (within 8 days of decision; 21 -day appeal period begins date received by DOE) Department of Ecology Shorelands Section State Attorney General *Applicant •Indian Tribes .. *Other agencies as necessary (checked off on attached list). *Any parties of record send only the staff report, site plan and the SEPA Determination Send These Documents to DOE and Attorney General: Permit Data Sheet Shoreline Substantial Development Permit (3 -part from Sierra) Findings (staff report or memo) Shoreline Permit Application Forin (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc. from PMT's) Site plan, with mean high water mark & improvements — Cross-sections of site with structures & shoreline - Grading Plan - Vicinity map SEPA determination (3 -part from Sierra) Findings (staff report or memo) SEPA Checklist (filled out by applicant) Any background studies related to impacts on shoreline Notice of Application Affidavit of Distribution (notice was mailed) P: ADMINISTRATIVEIFORMS\CFOCLIST.DOC Mir SOUNDTRANSIT March 16, 2010 Minnie Dhaliwal Senior Planner City of Tukwila 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188-2544 RECEIVED MAR 18 2010 COMMUNITY DEVELOPMENT RE: SOUTHCENTER BLVD (CONTRACT #C759) WETLAND, STREAM, AND BUFFER MITIGATION ASSURANCE LETTER — PW08-028 Dear Ms. Dhaliwal, The purpose of this letter is to provide the City of Tukwila with assurance that Sound Transit will fulfill all permit commitments associated with Public Works Permit #PW08-028 related to wetland and stream mitigation requirements. Condition #1 requires Sound Transit to provide a 150% financial bond for all sensitive area plantings. To meet the intent of this requirement Sound Transit required the contractor who installed the mitigation plantings (Terra Dynamics) to conduct one year of plant establishment maintenance. Terra Dynamics is required to water, weed, and replace any plant that dies within the one-year period from June 2009 to June 2010. During this plant establishment period Sound Transit, Terra Dynamics and City Planner, Jamie Reavis, attended periodic site visits to assess plant conditions throughout the multiple mitigation sites. Sound Transit and the Terra Dynamics identified plants that need to be replaced and these plants will be installed at the end of March 2010. By the end of their contract in June 2010, Terra Dynamics will ensure 100% of the plant material installed will be alive. Subsequent maintenance requirements after June 2010 will be handled by another landscape maintenance contractor. Currently, Restoration Logistics holds the Sound Transit contract for work between June and December 2010. Sound Transit will obtain a new contract with another landscape maintenance contractor for the duration of the monitoring and maintenance period ending in 2014. Finally, Sound Transit has a contract with Springwood Associates to conduct post -construction mitigation monitoring. Keith Fabing is the task manager for this effort and is scheduled to submit the year -one mitigation report to the City of Tukwila and all agencies with jurisdiction by the end of March 2010. Central Puget Sound Regional Transit Authority • Union Station 401 S. Jackson St. • Seattle, WA 98104-2826 • Reception: (206) 398-5000 • FAX: (206) 398-5499 • www.soundtransit.org CHAIR Aaron Reardon Snohomish County Executive VICE CHAIRS Fred Butler Issaquah Deputy Council President Claudia Thomas Lakewood Councilmember BOARD MEMBERS Claudia Balducci Bellevue Councilmember Richard Conlin Seattle Council President Dow Constantine King County Executive Jan Drago King County Councilmember Dave Enslow Sumner Mayor Jake Fey Tacoma Deputy Mayor Paula J. Hammond, P.E. Washington State Secretary of Transportation John Marchione Redmond Mayor Joe Marine Mukilteo Mayor Pat McCarthy Pierce County Executive Mike McGinn Seattle Mayor Julia Patterson King County Councilmember Larry Phillips King County Councilmember Paul Roberts Everett Council President Peter von Reichbauer King County Councilmember CHIEF EXECUTIVE OFFICER Joni Earl SOUNDTRANSIT Punch list item #2 under Special Permission for L06-080 states "during post -construction monitoring, if it is determined that a supplemental watering program is necessary then this contingency measure would be enacted." As mentioned above Sound Transit hired qualified biologists and landscape maintenance contractors to monitor and maintain all mitigation plantings. These teams will assist Sound Transit to ensure the sites meet all performance standards identified in the approved mitigation plan (Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements Tukwila, Washington Parametrix 2006). We hope the above information provides you with the necessary assurance that Sound Transit will meet all permit conditions associated with wetland and stream mitigation. If you should have questions or require additional information please do not hesitate to contact me at (206) 398-5002 / marti.Iouther@soundtransit.orq or Ginger Ferguson at (206) 398-5138 / ginger.ferqusonCa�soundtransit.orq Sincerely, Marti Louther Senior Environmental Planner Cc: Sandra Whiting, City of Tukwila Ginger Ferguson, Sound Transit Terry Beals, Sound Transit RECEIVED MAR 18 2010 COMMUNITY DEVELOPMENT T SOUNDTRANSIT June 24, 2009 Minnie Dhaliwal Senior Planner City of Tukwila 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188-2544 ! ECE, E0 JUN 2 6 2009 RE: SOUND TRANSIT SOUTHCENTER BOULEVARD DRAFT BASELINE MONITORING REPORT PERMIT PW08-028 Dear Minnie, The purpose of this DRAFT letter is to serve as the baseline monitoring report for wetland and buffer areas impacted and restored/mitigated as part of the Southcenter Boulevard widening project and to satisfy conditions for the PW08-028 permit. Plant Installation Planting the wetland and buffer mitigation areas began in March 2009 and was complete on June 1, 2009. Terra Dynamics, the landscape contractor (subcontractor to SCI) began their one-year plant establishment period on June 1, 2009 and will continue maintenance of the site through June 1, 2010. Subsequent landscape maintenance will be conducted by a Sound Transit hired landscape maintenance firm. Sound Transit is currently in the contract procurement process and we anticipate authorizing this maintenance contract by September 2009. Deviations from Approved Plan Minor modifications to the proposed amount and type of buffer area impacts occurred as a result of limited space adjacent to the Regional Detention Facility (RDF) outlet structure, constructing a small asphalt pad in the buffer of Gilliam Creek, and installation of retaining walls. To illustrate these deviations, I have attached red -line drawings of the project plans that indicate the location of the change and as -built plant numbers installed at each mitigation site. Sheet 331 shows the eastern portion of the stream buffer was not planted by Sound Transit. The adjacent property owners installed plants for a project unrelated to the Southcenter Blvd. Project; this planting plan was reviewed and approved by the City of Tukwila. Four red alder trees slated to be installed were moved to the RDF and 42 additional native shrub species were installed. Sheet 332 shows the temporary buffer impact area was approximately 630 sq. ft greater then anticipated. This area was restored and planted according to plans with the exception of 3 fewer live stakes installed at the outfall locations. Sheet 333 shows the portions of the RDF that were planted and Figures 1 of 2 and Sheet 2 of 2 show detailed images of impacts at the RDF and buffer modifications south of Southcenter Blvd at Station 44+00. As a result of iimited construction access and an unusually wet fall, Sound Transit was unable to restore and replant the slopes on either side of the RDF outlet as planned. Through discussions and meetings with City of Central Puget Sound Regional Transit Authority • Union Station 401 5. Jackson St., Seattle, WA 98104-2826 • Reception: 206-398-5000 • FAX: 206-398-5499 • www.soundtransit.org CHAIR Greg Nickels Seattle Mayor VICE CHAIRS Aaron Reardon • Snohomish County Executive Claudia Thomas Lakewood Councilmember . BOARD MEMBERS Julie Anderson • Tacoma Councilmember ' Edmonds Councilmember Dave Enslew Sumner Mayor Paula L Hammond, P.E. • Washington State Secretaryo f Transportation John •W.Ladenburg • Pierce County Executive John Marchione Redmond Mayor Julia Patterson • King County Council Chair. • Larry Phillips King County Couneilmember, Paul Roberts Everett Councilmember Ron Sims King County Executive Peter von Reichbauer • King County Councilmember CHIEF EXECUTIVE OFFICER . ' Joni Earl T SOUNDTRANSIT Tukwila Public Works Department, Sound Transit armored the slopes with rip rap to prevent slope failure. Approximately 4,600 sq. ft of upland buffer area is now considered to be permanent buffer impact. To compensate for this loss, about 6,000 sq. ft additional areas in the RDF were enhanced by removing non-native species and planting with native trees, shrubs, and ferns. Additionally, we have observed that as water levels rise and fall in the RDF sediment has begun to accumulate in the lower portions of the rip rap slope. Therefore, in the fall of 2009 Sound Transit will install willow stakes in the lower portions of the rip rap slope in hopes that they will establish roots and provide cover to the stream. The rip rap area will continue to be monitored during the 5 -year monitoring period. Two separate plant counts in the RDF area were conducted in May 2009 by Wakerobin and SCI. Due to the large size and difficult terrain in the RDF, there were some conflicting information in terms of final plant counts therefore; in order to ensure we have properly accounted for all the plants will be requesting Springwood consultant team to back -check plant counts as part of their scope to conduct the post -construction mitigation monitoring. The final counts at the RDF will be provided by early fall 2009 and included in their first year monitoring report. Sheet 334 shows two areas that deviate from the proposed temporary stream and wetland buffer impact areas. About 500 sf of additional buffer at Station 65+00 was affected as a result of shifting the 48" storm drain to the west to save 2 large big -leaf maple trees. About 1,600 sf of buffer area was affected south of Station 68+00 due to difficulty in constructing the retaining wall. Both areas were restored and replanted with native trees and shrubs. Trees were not planted over the 48" storm drain line. Thank you for your continued assistance in reviewing and approving this project. Please provide confirmation that the enclosed information is sufficient for your review and approval. If you should have questions about this information, please do not hesitate to contact me at (206) 398-5002 or via e-mail at marti.louther(a)soundtransit.orq or Terry Beals at (206) 398-5237 terry. beals(asoundtransit.orq Sincerely, Marti Louther Senior Environmental Planner Cc: Terry Beals, Sound Transit Ginger Ferguson, Sound Transit • City of Tukwila • Steven M. Mullet, Mayor June 7, 2007 Department of Community Development Steve Lancaster, Director MEMORANDUM TO: Jack Pace, Acting Director Department of Community Development FM: Nora Gierloff, Planning Supervisor RE: L06-080, Sound Transit Sensitive Area Special Permission, Southcenter Boulevard Expansion Project, Request for Temporary and Permanent Impacts to Wetlands, Watercourses and Their Buffers Sound Transit, in conjunction with the City of Tukwila proposes to widen Southcenter Boulevard approximately 20 feet from 32"d Avenue South to 53rd Avenue South to accommodate automobile, pedestrian and bicycle traffic and rail support structures associated with the Central Link Light Rail project. As part of this work improvements will be made to the stormwater drainage collection and conveyance system. Gilliam Creek and three of its tributaries as well as two Type 3 wetlands will be temporarily or permanently affected by the construction. Temporary impacts will be restored to pre -project conditions and permanent mitigation will occur within the Gilliam Creek ravine. SEPA Sound Transit has acted as the lead agency for environmental review in a series of Environmental Impact Statements for the Tukwila Freeway Route project and Tukwila will adopt those documents unchanged to satisfy SEPA requirements for this work, see Exhibit A. Background Wetlands: The applicant has provided a Wetland and Stream Delineation and Conceptual Mitigation Plan that is attached as Exhibit B. NG Q:\Light Rail\SCBL SpecPemi\StaffReport..doc Page 1 of 6 06/06/2007 4:17:00 PM 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206-431-3670 • Fax: 206-431-3665 ili L06-080, Special Permission irector The temporary wetland impact under Tukwila's SAO regulation is the construction of a fence across wetland GC -5 for an impact of 100 square feet. This will be mitigated through on-site restoration. The permanent wetland impact under Tukwila's SAO regulation is the filling of the entire GP -3 wetland at 166 square feet in order to create an access/maintenance road. This is an isolated Type 3 wetland of less than 1,000 sf and therefore is not regulated by Tukwila. It will be mitigated in the Gilliam Creek ravine at a ratio of 3:1 for a total of 400 sf of riparian enhancement. Watercourses: The project will impact the main stream and three tributaries to Gilliam Creek. The temporary watercourse impact under Tukwila's SAO regulation is of 986 sf of Gilliam Creek channel disturbed during the stream bypass and dewatering activities. The permanent watercourse impact will be a total of 949 sf due to extending culverts and placement of energy dispersing rock. In addition there will be 22,143 sf of temporary buffer impacts and 16,371 sf of permanent buffer impacts. Decision Criteria This Special Permission Director application is comprised of three elements: I. Request to fill and alter wetlands including showing that the alterations are the minimum necessary for project feasibility; II. Request to permanently alter watercourse buffers and extend watercourse piping; III. Request to use a Type 3 watercourse for stormwater detention. The decision criteria for each of these requested actions are discussed below. I. Request to Fill or Alter Wetlands TMC 18.45.090 A. states that any use or development in a wetland is subject to review and approval by the Director. Isolated Type 3 wetlands may be altered or relocated only with the permission of the Director. Wetland GP -3 does not meet Tukwila's threshold for mitigation, however Sound Transit has included mitigation for the impact in their plan. TMC 18.45.090 B. states that alterations to wetlands are discouraged and are limited to the minimum necessary for project feasibility. In this case the project could not be moved or redesigned to avoid filling wetland GP -3 due to its location within the existing R -O -W which is the only access point for the proposed flow control structure. The temporary impact to wetland GC -5 for installation of a fence could not be avoided because the fence must follow the existing property line. Requests for alterations must meet the criteria that follow below. The criteria are in italics with the response following. NG Page 2 of 6 06/06/2007 4:17:00 PM Q:\Nickel Fund Improvements\L06-040 Special Permission Director.doc L06-080, Special Permissilkirector a. The alteration will not adversely affect water quality; Response: Best Management Practices will be used in construction of the fence in wetland GC -5 and no permanent impacts are expected. The proposed drainage conveyance and water quality treatment were designed in accordance with the City of Tukwila requirements, the 1998 King County Surface Water Design Manual, the Stormwater Management Manual for Western Washington and the City of Tukwila adopted Gilliam Creek Basin Stormwater Management Plan. b. The alteration will not adversely affect fish, wildlife, or their habitat; Response: The wetlands to be altered are located in road right-of-way and currently provide very little habitat. c. The alteration will not have an adverse effect on drainage and/or storm water detention capabilities; Response: Modifications to the Gilliam Creek Ravine will provide improved stormwater detention and drainage. d. The alteration will not lead to unstable earth conditions or create an erosion hazard or contribute to scouring actions; Response: Temporary erosion and sediment control Best Management Practices will be used during construction to prevent erosion. The flow control structure will meter out water discharge to Gilliam Creek, reducing velocities and scouring. Stream channel improvements including placement of energy dispersing rock will reduce erosion hazard. e. The alteration will not be materially detrimental to any other property; and Response: All work will take place either on publicly owned land or on easements obtained for the purpose. f The alteration will not have adverse effects on any other sensitive areas. Response: None of the other wetlands associated with Gilliam Creek will be impacted by the road work. Impacts to the watercourses will be addressed in sections II and III. II. Request to Permanently Alter Watercourse Buffers and Extend Watercourse Piping The SAO provides a mechanism for approving unavoidable impacts to watercourses and their buffers. The project will impact the main stream and two tributaries to Gilliam Creek by constructing roadway improvements and storm drainage facilities along Southcenter Boulevard. The temporary watercourse impact is of 986 sf of Gilliam Creek channel disturbed during the stream bypass and dewatering activities. The permanent watercourse impact will be a total of 949 sf due to extending culverts and placement of NG Page 3 of 6 06/06/2007 4:17:00 PM Q:\Nickel Fund Improvements\L06-040 Special Permission Director.doc L06-080, Special Permission irector • energy dispersing rock. There will also be 22,143 sf of temporary buffer impacts and 16,371 sf of permanent buffer impacts. TMC 18.45.110 C provides that the Director may approve piping if it is necessary for access purposes pursuant to the following standards. The SAO does not establish a mitigation ratio for impacts to watercourse buffers, Sound Transit has proposed 3:1. See Exhibit C for the planting scheme. 5. Piping projects shall be performed pursuant to the following applicable standards: a. The conveyance system shall be designed to comply with the standards in current use and recommended by the Department of Public Works. Response: Public Works has reviewed and approved the project plans. b. Where allowed, piping shall be limited to the shortest length possible as determined by the Director to allow access onto a property. Response: In two areas along the Northwest tributary an existing pipe will be extended 20 feet and a culvert will be extended 10 feet. A culvert will also be lengthened in the main stem of Gilliam Creek (in the ravine). This will require 52 sf of fill and the culvert will be extended accordingly. In all cases the length is the minimum needed for the Southcenter Boulevard. roadway expansion. c. Where water is piped for an access point, those driveways or entrances shall be consolidated to serve multiple properties where possible, and to minimize the length of piping. Response: The extensions of the structures are needed to accommodate widening of an existing road. d When required by the Director, watercourses under drivable surfaces shall be contained in an arch culvert using oversize or super span culverts for rebuilding of a streambed. These shall be provided with check dams to reduce flows, and shall be replanted and enhanced according to a plan approved by the Director. Response: Given the short length of the extensions it is appropriate to match the existing pipe or culvert design. e. All watercourse crossing shall be designed to accommodate fish passage. Watercourse crossings shall not block fish passage where the streams are fish bearing. Response: Based on previous studies neither the Northwest tributary nor the Gilliam Creek main stem are fish bearing at this location. f Storm water runoff shall be detained and infiltrated to preserve the watercourse channel's dominant discharge. Response: The related modifications to the Gilliam Creek main stream will improve storm water quality, promote infiltration and reduce downstream velocities. g. All construction shall be designed to have the least adverse impact on the watercourse, buffer and surrounding environment. Response: The areas affected are adjacent to a roadway and are highly disturbed. Sound Transit has committed to restore temporary impacts to equal or better than NG Page 4 of 6 06/06/2007 4:17:00 PM Q:\Nickel Fund Improvements\L06-040 Special Permission Director.doc L06-080, Special Permission irector III) • pre -project conditions. Best management practices will be followed and mitigation will be concentrated adjacent to the Gilliam Creek ravine. h. Piping shall be constructed during periods of low flow, or as specified by the State Department of Fish and Wildlife. Response: An HPA has been granted for this work i. Water quality must be as good or better for any water exiting the pipe as for the water entering the pipe, and flow must be comparable. Response: The short length of the extensions should not have a significant effect on water quality or flow. III. Request to Use a Type 3 Watercourse for Stormwater Detention Use of a Type 3 watercourse as part of a regional storm water detention facility may be allowed under TMC 18.45.070 subject to the general standards in the SAO and an approved mitigation plan. The applicant has provided a Wetland and Stream Delineation and Conceptual Mitigation Plan that is attached as Exhibit B. This plan has been reviewed by Tukwila's Urban Environmentalist and after revisions in response to City comments has been determined to comply with SAO requirements. The mitigation performed will increase the quality of the buffer, improve water quality and reduce downstream scouring and erosion. CONCLUSIONS 1. Sound Transit in conjunction with WSDOT and the City of Tukwila is proposing widening and improvements to Southcenter Bl to accommodate bicycle, pedestrian, automobile and light rail traffic. 2. Sound Transit, acting as the lead agency, has performed an EIS for the Tukwila Freeway Route construction that covers the scope of this work. Tukwila has concurred that existing environmental documentation is sufficient to allow permitting of the current work. 3. Sound Transit is requesting Special Permission to temporarily alter a Type 3 wetland; extend watercourse piping in three locations for Type 4 watercourses; and perform stormwater improvements that would have temporary and permanent impacts on Type 3 and 4 watercourses. 4. Essential streets, roads and rights-of-way are a permitted use subject to administrative review under TMC 18.45.070 B.7. 5. The wetland alterations will not adversely affect water quality. 6. Due to the limited right-of-way available for the road widening, permanent buffer impacts will be mitigated within the Gilliam Creek Ravine. Temporary impacts will be mitigated on site. The mitigated buffer area will be planted with native species and invasive species will be removed. 7. Modifications to the control structure will increase the amount of stormwater detained in the Gilliam Creek ravine and meter its discharge which will improve NG Page 5 of 6 06/06/2007 4:17:00 PM Q:\Nickel Fund Improvements\L06-040 Special Permission Director.doc L06-080, Special Permission0rector • water quality and reduce erosion. Best Management Practices will be used during construction to control erosion and sedimentation. 8. The project will provide 3,500 sf of riparian enhancement along Gilliam Creek to mitigate for wetland and watercourse permanent impacts and 27,000 sf of buffer enhancement within the Gilliam Creek ravine to mitigate for watercourse buffer loss. The buffers will be planted with native species to supplement existing native vegetation and increase diversity of species. RECOMMENDATION Staff recommends approval of the Special Permission permit. Attachments: Exhibit A: Exhibit B: Exhibit C: Letter from James Irish regarding Environmental Compliance Wetland and Stream Delineation and Conceptual Mitigation Plan Revised Contract Drawings NG Page 6 of 6 06/06/2007 4:17:00 PM Q:\Nickel Fund Improvements\L06-040 Special Permission Director.doc SOUNDTRANSIT April 26, 2007 Nora Gierloff Planning Supervisor City of Tukwila Department of Community Development 6300 Southcenter Boulevard, Suite #100 Tukwila, WA 98188 RECEIVED APR 27 2001+ COMMUNITY DEVELOPMENT Re: Follow Up - Response to City of Tukwila Questions Regarding Sound Transit Southcenter Widening Project (C759) Dear Ms. Gierloff On February 12th Sound Transit sent a letter to Tukwila responding to your second review of our permit application for widening Southcenter Boulevard in the City of Tukwila. At that time the revised landscape construction sheets were not available. We are enclosing them now with the response to the remaining comments. Question from City of Tukwila 1. For the mitigation plantings Sheet P76LD22 should address the following a. Specifically what material is to be used for mulching. Response from Sound Transit The following information is included in the specification section 2.10 Mulch: "Ground Bark: Ground bark shall be derived from Douglas fir and Western hemlock tree species. Bark is defined as the outermost, coarse, protective layer of the tree, ,% located outside of the cambium layer. It shall be ground so that a minimum of 95 percent, by volume, of the material will pass through a 1—inch sieve. Ground bark shall not contain elements in quantities that would be detrimental to plant life. Wood cellulose tissue of fiber (wood pulp), wood waste, wood shavings, wood sawdust, wood chips, or any product that contains greater than 5 percent, by volume, of the hard, lignified wood portion of the tree will not be accepted." Question from City of Tukwila Provide additional specifications for plant material and quality such as: i. Plants must be container grown native plants grown in the Puget Sound Region. Central Puget Sound Regional Transit Authority • Union Station 401 S. Jackson St., Seattle, WA 98104-2826 • Reception: (206) 398-5000 • FAX: (206) 398-5499 • www.soundtransit.org BOARD CHAIR John W. Ladenburg Pierce County Executive BOARD VICE CHAIRS Connie Marshall Bellevue Councilmember Mark Olson Everett Councilmember BOARD MEMBERS Julie Anderson Tacoma Councilmember Mary -Alyce Burleigh Kirkland Councilmember Fred Butler Issaquah Deputy Council President Dow Constantine King County Councilmember Dave Enslow Sumner Mayor Doug MacDonald Washington State Department of Transportation Secretary Richard Marin Edmonds Councilmember Richard McIver Seattle Councilmember Greg Nickels Seattle Mayor Julia Patterson King County Councilmember Larry Phillips Chair, King County Council Aaron Reardon Snohomish County Executive Ron Sims King County Executive Claudia Thomas Lakewood Mayor Pete von Reichbauer Vice Chair, King County Council CHIEF EXECUTIVE OFFICER ii. Quality: The root balls of both container -grown and B&B must be inspected. Woody bare root plants must have a dense, fibrous root system and be dormant when planted. For container grown plants root balls must hold together when plant is removed from the pot, except that a small amount of loose soil may be on top of the root ball. Plants must not be root -bound and there must be no circling roots present in any plant inspected. Root balls that are cracked or broken when removed from the container shall be rejected. Response from Sound Transit The following information was added to section 2.05 Plant Stock in the special provisions. A. General Notes for Mitigation Planting Areas: Plants for the mitigation planting areas shall be locally grown, container -grown, Puget Sound region native plants, and shall meet the following requirements: 1. Container -grown plants: Such stock shall have been grown in its delivery container for not less than four (4) months, and shall be subject to inspection. Rootballs, selected at random by the Engineer, shall not exhibit root -bound conditions. Plants with broken balls of earth are unacceptable and shall be rejected without exception. This also applies to broken rootballs after removal from container. Under no circumstances shall container stock be handled by their trunks, stems, or tops. /. B&B plant stock: Balled and burlapped plant stock shall meet the same requirements as container -grown stock. In addition, the burlap shall be removed completely from the rootball at time of planting. /3 Bare -root plant stock: Bare -root plant stock shall have a substantial intact, dense, fibrous root system and be dormant when planted. Plants with roots dried and shriveled from exposure are unacceptable and shall be rejected without exception Question from City of Tukwila c. Modify planting details relating to plant preparation and installation to include: -i. Burlap shall be completely removed from B&B plants at the time of planting. iii. Root balls for B&B and containerized plants shall be examined and loosened throughout at least the outer 2 inches of root ball. Any damage or matted roots shall be pruned prior to planting. Response from Sound Transit This information was added to 1, 5 & 6 on sheet P762LD22. Question from City of Tukwila d. Provide details for willow stakes. Details should include such items as: Stakes shall be freshly collected from dormant plants and shall be Y2 to 1 inch in diameter and 1 'Y2 to 3 feet in length. ,ir The top of the stakes should be cut horizontally and the bottom at an angle tie Stakes shall be planted so that at least half their length is buried in the soil. yd Stakes shall be installed by ... (pilot hole versus pounding in, depending on soil conditions). v. If not planted immediately, the stakes must be kept in cool, shaded, moist conditions and planted within two weeks of cutting. Response from Sound Transit /This information was added as detail 12 on sheet P762LD22. Question from City of Tukwila ,2' Sheet R402LP13 should specify the amount of seed to be applied to the mitigation area. Response from Sound Transit / This information was added to R402LP13. Question from City of Tukwila 3.) The performance standards and landscape contractor's responsibility for plant survival should be included in the plans. Question from City of Tukwila Performance standards for the landscape establishment period are included in the specifications. Performance standards after the landscape establishment period are included in the text provided for the wetland monitoring plans. Response from Sound Transit To verify that issues identified during wetland monitoring are incorporated into the maintenance efforts during the plant establishment period the following information has been added to section 3.21 Mitigation Planting Area in the special provisions. A. Plant Establishment Period Coordination with Wetland Biologist: ,_1. The Contract shall meet with the Biologist on site to review site conditions and shall review and comment on the As -built drawings, baseline monitoring report and annual monitoring j a 1 report(s) 6). a.. The Contractor shall meet on site with the Biologist following the preparation of the As -built drawings to review site condition. The Biologist shall review the As -built drawings and provide written comments to the Engineer. Contractor shall address comments on the As - built drawings that vary from the construction contract documents. .4 The Contractor shall meet on site with the Biologist to review site conditions, after the Biologist has prepared the Baseline Monitoring Report. The Contractor shall review the Baseline Monitoring Report, and then provide and submit written comments, on the maintenance and contingency guidance provided in the Baseline Monitoring Report, to the Engineer. c. The Contractor shall meet with the Biologist on site one month prior to the end of the plant establishment period to review site conditions. The Contractor shall review the Annual Monitoring Report, and then provide and submit written comments, on the maintenance and contingency guidance provided in the Annual Monitoring Report, to the Engineer one month prior to the end of the plant establishment period. If you have further questions, please call me at (206) 398-5135. Sincerely Chris ►o -nse Senior nvironmental Planner C. Rod Kempkes James Irish • SOUNDTRANSIT RECEIVED FEi1 / COMMUNITY DEVELOPMENT February 14, 2007 Nora Gierloff Planning Supervisor City of Tukwila Department of Community Development 6300 Southcenter Boulevard, Suite #100 Tukwila, WA 98188 Re: Response to City of Tukwila Questions Regarding Sound Transit Southcenter Widening Project (C759) Dear Ms. Gierloff • Thank you for your second review of our permit application for widening Southcenter Boulevard in the City of Tukwila: The following are Sound Transit's responses to your questions: Question from City of Tukwila Also, there should be a set of performance standards for plant survival/plant cover and a vegetation monitoring program should be developed that would provide for periodic inspections and reports submitted to the City. Response from Sound Transit According to the Tukwila Municipal code -18.45.090(F)(3), the mitigation plan should include a "monitoring and/or evaluation program that outlines the approach for assessing a completed project. An outline shall be included that spells out how the monitoring data will be evaluated by agencies that are tracking the mitigation project's progress." Our report did not provide specific details on monitoring reports so we have provided some language below regarding performance standards, monitoring processes and products. The following are recommended performance standards based upon the Conceptual wetland mitigation plan (Parametrix 2006). We have made slight modifications in the text language of the performance standards in order to fully incorporate restoration of temporary impacts and permanent mitigation area. Central Puget Sound Regional Transit Authority • Union Station 401 S. Jackson St., Seattle, WA 98104-2826 • Reception: (206) 398-5000 • FAX: (206) 398-5499 • www.soundtransit.org BOARD CHAIR John W. L8denburg Pierce County Executive BOARD VICE CHAIRS Connie Marshall Bellevue Councilmember Mark Olson Everett Councilmember BOARD MEMBERS Julie Anderson Tacoma Councilmember Mary -Alyce Burleigh Kirkland Councilmember Fred Butler Issaquah Deputy Council President Dow Constantine King County Councilmember Dave Enslow Sumner Mayor Doug MacDonald Washington State Department of Transportation Secretary Richard Marin Edmonds Councilmember Richard McIver Seattle Councihnember Greg Nickels Seattle Mayor Julia Patterson King County Councilmember Larry Phillips Chair, King County Council Aaron Reardon Snohomish County Executive Ron Sims King County Executive Claudia Thomas Lakewood Mayor Pete von Reichbauer Vice Chair, King County Council CHIEF EXECUTIVE OFFICER Objectives: Plant native trees and shrubs with high food and cover value for wildlife and to create a structurally complex and diverse plant community. Restore temporarily disturbed buffer areas in the project corridor with native vegetation. Construction Monitoring: Conduct pre -construction meeting with landscape contractor/project biologist to review sensitive area protection program. Program shall include the following: 1) re -survey the edges of the wetlands, streams and buffers prior to clearing activities and place a lath/stake - with a unique number at the edge of the wetland/stream and buffer, 2) have the sensitive area stake locations reviewed by Landscape architect and/or project biologist prior to installing sediment fencing or high visibility fencing (HVF); 3) install HVF and/or sediment fencing at the edge of impact zone to prevent disturbance beyond the construction limit. Monitoring Program: All compensatory mitigation projects shall be monitored for the period necessary to establish that performance standards have been met, but in no event for a period less than five years following the acceptance of the installation/construction by the director. ,B°' Monitoring reports on the current status of the mitigation project shall be submitted to the City. The reports shall be prepared by a qualified biologist and shall include monitoring information on wildlife, vegetation, water quality, water flow, stormwater storage and conveyance, and existing or potential degradation. Reports shall be submitted in accordance with the following schedule: i. At the time of construction. ii. Thirty days after planting. The report shall include at a minimum: a) when the project was completed, b) number of plants installed, c) any deviations from the plan (grading or planting), and d) general photographs of site. iii. At the end of the growing season of the first year. All dead or severely stressed plants are flagged and recorded (species and number) prior to the 1 year warranty expiration date. All flagged plants are replaced by the landscape contractor with either the same species or a substitution is presented to the City for review and approval. .-i During Years 2, 3, and 5 by December 31st of each monitoring year. Monitoring in Year 4 may be required depending upon the success of the mitigation site at the end of Year 3. Performance Standards: `• 100% survival of all planted trees and shrubs at the end of Year 1. •� Minimum of 80% survival of planted trees and shrubs at the end of Year 3 and Year 5. A minimum of 20% tree and 50% shrub cover by the end of Year 5. • Evidence of positive growth of plant species over the previous year. Evaluation Method: Sound Transit will record and monitor installed conditions and establish permanent monitoring transects, photopoints and data sample points. Sound Transit will provide panoramic views of the sites at the same reference point during each monitoring period. The data sample plots will be utilized to conduct annual vegetation sampling to estimate woody plant mortality and identify and control noxious weed invasion if any. Question from City of Tukwila The details on sheet P762LD22, which were originally intended for planting the landscaped areas have been slightly modified to incorporate some aspects related to mitigation are not necessarily appropriate for mitigation plantings. Additional details are need for mitigation plantings as outlined below. 1. For the mitigation plantings Sheet P76LD22 should address the following a. Specifically what material is to be used for mulching. b. Provide additional specifications for plant material and quality such as: Plants must be container grown native plants grown in the Puget Sound Region. ,,i;1Quality: The root balls of both container -grown and B&B must be inspected. Woody bare root plants must have a dense, fibrous root system and be dormant when planted. For container grown plants root balls must hold together when plant is removed from the pot, except that a small amount of loose soil may be on top of the root ball. Plants must not be root -bound and there must be no circling roots present in any plant inspected. Root balls that are cracked or broken when removed from the container shall be rejected. c. Modify planting details relating to plant preparation and installation to include: !1: TBurlap shall be completely removed from B&B plants at the time of planting. ,:. •••Root balls for B&B and containerized plants shall be examined and loosened .4$7.7 y` throughout at least the outer 2 inches of root ball. Any damage or matted roots shall be pruned prior to planting. d. Provide details for willow stakes. Details should include such items as: Stakes shall be freshly collected from dormant plants and shall be '/2 to 1 inch in diameter and 1 '/2 to 3 feet in length. ,ii."—The top of the stakes should be cut horizontally and the bottom at an angle Ai Stakes shall be planted so that at least half their length is buried in the soil. iv: "~Stakes shall be installed by ... (pilot hole versus pounding in, depending on soil conditions). V.), If not planted immediately, the stakes must be kept in cool, shaded, moist conditions and planted within two weeks of cutting. Response from Sound Transit These changes will be incorporated into the landscape plans and/or into the specifications. Revised landscape plans will be forwarded to Tukwila as soon as they are available. Question from City of Tukwila V • 2. Sheet R402LP13 should specify the amount of seed to be applied to the mitigation area. Response from Sound Transit These changes will be incorporated into the landscape plans and/or into the specifications. Revised landscape plans will be forwarded to Tukwila as soon as they are available. Question from City of Tukwila 3? The performance standards and landscape contractor's responsibility for plant survival should be included in the plans. Response from Sound Transit These changes will be incorporated into the landscape plans and/or into the specifications. Revised landscape plans will be forwarded to Tukwila as soon as they are available. If you have further questions, please call me at (206) 398-5135. Sincerely, slow Senior En C. Rod Kempkes James Irish ntal Planner • city of Tukwila Steven M. Mullet, Mayor January 24, 2007 Department of Community Development Steve Lancaster, Director Chris Townsend Sound Transit 401 S. Jackson Street Seattle, WA 98104 RE: Special Permission Director L06-080 Dear Mr. Townsend, The City has reviewed your response dated January 8, 2007 to our comments on the permit for impacts associated with widening Southcenter Boulevard. While most of the issues have been resolved, we had a few additional comments. The details on Sheet P762LD22, which were originally intended for planting the landscaped areas and have been slightly modified to incorporate some aspects related to mitigation, are not necessarily appropriate for mitigation plantings. Additional details are needed for mitigation plantings as outlined below. Also, there should be a set of performance standards for plant survival/plant cover and a vegetation monitoring program should be developed that would provide for periodic inspections and reports submitted to the City. 1. For the mitigation plantings Sheet P762LD22 should address the following: a. Specify what material is to be used for mulching. b. Provide additional specifications for plant material and quality, such as: i. Plants must be container grown native plants grown in the Puget Sound Region ii. Quality: The root balls of both container -grown and B&B must be inspected. Woody bareroot plants must have a dense, fibrous root system and be dormant when planted. For container grown plants root balls must hold together when the plant is removed from the pot, except that a small amount of loose soil may be on the top of the rootball. Plants must not be root -bound and there must be no circling roots present in any plant inspected. Rootballs that are cracked or broken when removed from the container shall be rejected Q:\Light Rail\SCBL SpecPerm\SCBL_Comm2.DOC 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206-431-3670 • Fax: 206-431-3665 • c. Modify planting details relating to plant preparation and installation to include: Burlap shall be completely removed from B&B plants at the time of planting. ;>r' Root balls for B&B and containerized plants shall be examined and loosened throughout at least the outer 2 inches of root ball. Any damage or matted roots shall be pruned prior to planting. d. Provide details for willow stakes. Details should include such items as: i.. Stakes shall be freshly collected from dormant plants and shall be %7 to 1 inch in diameter and 11/2 to 3 feet in length. ii: The top of the stakes should be cut horizontally and the bottom at an angle. Stakes shall be planted so that at least half their length is buried in soil. iv. Stakes shall be installed by ... (pilot hole versus pounding in, depending on soil conditions). v. ) If not planted immediately, the stakes must be kept in cool, shaded, moist conditions and planted within two weeks of cutting. Y Sheet R402LP13 should specify the amount of seed to be applied to the mitigation area. 3. The performance standards and landscape contractor's responsibility for plant survival should be included in the plans. If you have any questions about these comments please call Sandra Whiting at (206)431-3663. Sincerely, Nora Gierloff Planning Supervisor cc: Sandra Whiting, DCD Q:\Light Rait\SCBL SpecPerm\SCBL_Comm2.DOC • fir SOUNDTRANSIT January 8, 2007 Nora Gierloff Planning Supervisor City of Tukwila Department of Community Development 6300 Southcenter Boulevard, Suite #100 Tukwila, WA 98188 • RECEIVED DEVELOPi EENT Re: Response to City of Tukwila Questions Regarding Sound Transit Southcenter Widening Project (C759) Dear Ms. Gierloff Thank you for your initial review our permit application for widening Southcenter Boulevard in the City of Tukwila. The following are Sound Transit's responses to your questions: 1. City of Tukwila question: A security fence is shown around the proposed regional detention facility. Details of the fence were not provided, but it is assumed that it will be a standard chain link fence. Given that the fence will surround the stormwater retention area, passing through the buffer and crossing the stream and a wetland, provisions should be made to allow wildlife passage through the fence, at least in some locations. Please indicate how this will be done. Sound Transit Response: A standard chain-link fence will be installed surrounding the detention facility. Sound Transit will provide a standard detail and specifications for the fence in the contract documents. To facilitate wildlife movement through the site, a 12 -inch half circle opening will be clipped from the bottom of the fence every 100 feet. Details for this wildlife mitigation measure will also be included in the plans and specifications. 2. City of Tukwila question: The classification of the unnamed tributary is not consistent between Table 3-1 and Section 3.2.3.4. Has this stream been determined to be intermittent (and therefore, a Type 4 watercourse). Sound Transit Response: The stream is intermittent and should be classified as a Type 4. Central Puget Sound Regional Transit Authority • Union Station 401 S. Jackson St., Seattle, WA 98104-2826 • Reception: (206) 398-5000 • FAX: (206) 398-5499 • www.soundtransit.org BOARD CHAIR John W. Ladeoburg Pierce County Executive BOARD VICE CHAIRS Connie Marshall Bellevue Councilmember Mark Olson Everett Councihnernber BOARD MEMBERS Julie Anderson Tacoma Councilmember Mary -Alyce Burleigh Kirkland Councilmember Fred Butler Issaquah Deputy Council President Dow Constantine King County Councilmember Dave Enslow Stunner Mayor Doug MacDonald Washington State Department of Transportation Secretary Richard Marin Edmonds Councilmember Richard McIver Seattle Councibnernber Greg Nickels Seattle Mayor Julia Patterson King County Councilmember Larry Phillips Chair, King County Council Aaron Reardon Snohomish County Executive Ron Sims King County Executive Claudia Thomas Lakewood Mayor Pete von Reichbauer Vice Chair, King County Council CHIEF EXECUTIVE OFFICER • 3. City of Tukwila question: Planting details have not been provided for riparian and buffer enhancement, mulching, or proposed mitigation of temporary buffer impacts (see Drawing RL402LP13 -16). Details should also include provisions for irrigation until plants are established. Sound Transit Response: Planting details for the mitigation planting will be similar to those provided for the rest of the landscape plans. Revised plan sheets and details for the mitigation plantings are attached. Sound Transit proposes not to use temporary irrigation within the Gilliam Creek ravine because of the unique existing site conditions. The majority of the mitigation areas are located within a forested area and are well shaded. Assuming that planting occurs at the appropriate time, supplemental irrigation should not be required. To ensure that the plants have the best possible chance of survival, a new detail will be added that requires a minimum of 3 -inches of mulch be placed around each plant (not next to the trunk or stem). Mulch rings will be a minimum of 2 ft diameter for shrubs and 4 ft diameter for tree species. To compensate for the lack of irrigation in sunnier locations (specifically areas near the access roadway and within the right-of-way for temporarily impacted buffers), Sound Transit would "over -plant" these areas and add the extra thick mulch ring to all plants in these zones. Portions of the area near the access roadway near the Gilliam Creek ravine is not planned to be fenced and receives a high amount of vandalism and dumping. Sound Transit is concerned that installing temporary irrigation in this area, as well as within the right-of-way, would only be subject to vandalism and feels that the extra cost of over -planting and providing additional mulching should balance the potential additional costs associated with installing temporary irrigation. During post -construction monitoring, if it is determined that a supplemental watering program is necessary, then this contingency measure would be enacted. The narrow mitigation planting areas along the public right of way can easily be watered by hand from a watering truck, if necessary, and do not need a landscape irrigation system to be installed. Finally, the details and specifications would include a requirement that all plantings shall occur between October and March to ensure that there is enough moisture present for proper plant establishment. If planting occurs outside of this window, the landscape contractor would be responsible to provide and maintain a temporary irrigation system at their own cost. 4. City of Tukwila question: Drawing R402LP14 specifies Rosa pisocarpa (the name is misspelled on the plan) for planting in the upland buffer. This species normally prefers...and does not appear to be appropriate for upland planting unless it is closer to the water. Please comment. • Sound Transit Response: Sound Transit will revise the plant species on this sheet to be Rosa nutkana instead of Rosa pisocarpa; R. nutkana is more tolerant of open areas than R. pisocarpa. If you have further qu Ions, ase call me at (206) 398-5135. Chris Townse Senior Envir ental Planner C. Rod Kempkes James Irish • City of Tukwila Steven M. Mullet, Mayor Department of Community Development Steve Lancaster, Director December 7, 2006 Chris Townsend Sound Transit 401 S. Jackson Street Seattle, WA 98104 RE: Special Permission Director L06-080 Dear Mr. Townsend, The City has reviewed your application for a Sensitive Area Special Permission permit for impacts associated with widening Southcenter Boulevard and has the following comments: Wetland and Stream Delineation and Conceptual Mitigation Plan Report 1. A security fence is shown around the proposed regional detention facility. Details of the fence were not provided, but it is assumed that it will be a standard chain link fence. Given that the fence will surround the stormwater retention area, passing through the buffer and crossing the stream and a wetland, provisions should be made to allow wildlife passage through the fence, at least in some locations. Please indicate how this will be done. 2. The classification of the unnamed tributary is not consistent between Table 3-1 and Section 3.2.3.4. Has this stream been determined to be intermittent (and therefore, a Type - 4 watercourse)? Contract Drawings (RL402LP 13 — 16) 3. Planting details have not been provided for riparian and buffer enhancement, mulching, or proposed mitigation of temporary buffer impacts. Details should also include provisions for irrigation until plants are established. D 4. Drawing R402LP14 specifies Rosa pisocarpa (the name is spelled on the plan) for planting in the upland buffer. This species normally prefer and does not appear to be appropriate for upland planting unless it is close to the water. Please comment. Q:\Light Rail\SCBL SpecPerm\SCBL_Comments.DOC 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206-431-3670 • Fax: 206-431-3665 • • If you have any questions about these comments please call Sandra Whiting at (206)431-3663. Sincerely, Nora Gierloff Planning Supervisor cc: cSandraWfiiting DCD 7 Q:1Light Rail\SCBL SpecPerm\SCBL_Comments.DOC C759 Planning Comments General Comments • Curb cuts — should be oriented to the crosswalk, not diagonal into middle of intersection • Pedestrian countdown signals should be installed at intersections near the station (TIB, new signal connecting the North Lot to the station area) • General: Explain rationale for the species included in the upland seed mix. • Sheet 80: What happens as the two lanes in each direction along Southcenter Blvd (east of I-5) merge into one lane and a bike lane in each direction? In this area, with two travel lanes, cars in the outside lanes frequently cut off cars in the other lane. Now that bike lanes will encourage bicyclists to ride in the roadway, what changes should be made east of the project area to improve safety for bicyclists, considering that cars will most likely continue to use both westbound lanes east of 52rd Ave S, and then must merge. • Sheets 40-42: There are a lot of trees that will be taken out in front of the Park Place by the Woods apartments. Can replacement trees be planted, or is there something else that can be done as mitigation/screening? • Sheets 18, 36, 72: It looks like there will be 2 curb cuts for parcel #0043000225 once the project is finished. What is the rationale for 2 curb cuts for a single- family residential property? Landscaping/Mitigation Area Comments: • Sheets 287 and 333. Part of the area proposed for hydroseeding is wetland and stream buffer. Native shrubs should be planted in the buffer areas if this maintenance corridor is permanent and will not be mowed. It should be noted that Sheet 333 shows some tree planting in part of this access corridor, so it is unclear what the future use of the corridor will be. • Sheet 331. Add some shrubs for planting among the alders. It appears that the planting strip shown on the north side of Southcenter Blvd is left over from a general landscaping plan, but because it uses the same symbol as for alder, it could be confusing to the landscape contractor. This needs to be corrected. If, in fact, alders are supposed to be planted north of Southcenter Blvd., then the spacing should be clarified, as it appears to be different between the two areas. If the area south of Southcenter Blvd is not to be irrigated, then a greater density of plantings is necessary. • Sheet 332. Incorporate some evergreen native trees into the planting mix. If this area is not to be irrigated, then a greater density of plantings is necessary. What is the rationale for 2 gallon containers for the shrubs? • Sheet 333 (see comment above also). The density of planting for the red osier dogwood should be 1 ft o.c. Add a note stating that planting trees beneath existing large trees should be avoided (except for western red cedar, which needs shade when young, especially when not irrigated). • Sheet 334. Given that this is a long, narrow area and only 10 big leaf maples are proposed, the plan should indicate exactly in which area they are to be planted. The number of plants should be increased to account for lack of irrigation. Add a mid -story shrub species. • Sheet 385, Landscape planting details. All burlap is to be removed on B&B plants. No imported topsoil should be used to backfill plants in restoration areas, unless sufficient native soils are not available. We need to see specs for plant conditions, characteristics, sources, etc. Specs/Details • We need specs or samples showing the finish for the walls. Design treatment beyond what is shown in the plans is needed to make the corridor less of a tunnel. • We need a spec showing the chain link fence that is proposed for the detention pond, showing cut-outs for wildlife passage. According to Sound Transit's response to comments from DCD, dated 1/9/2007, Sound Transit said they would provide a standard detail and specifications for the fence in the contract documents, including the following modifications to the fence: "To facilitate wildlife movement through the site, a 12 -inch half circle opening will be clipped from the bottom of the fence every 100 feet. Details for this wildlife mitigation measure will also be included in the plans and specifications" • All chain link fencing for project should have black vinyl coating. • Sheet 159 - Bike Lane Symbol (B): Bike lane stencil should be a helmeted rider. • At intersection areas along the project route, "Yield to Bikes" signs should be included. • A statement of the landscape contractor's responsibility for plant survival needs to be included on the mitigation planting plans and specs. • Details/specs related to mitigation planting areas (section 3.21) need to expand on the performance standards to include the following information related to Plant Establishment Period Coordination with Wetland Biologist (as outlined in Sound Transit letter dated 4/26/2007 response to Tukwila's comments). The following information needs to be added to Section 3.21: o Plant Establishment Period Coordination with Wetland Biologist: 1. The Contractor shall meet with the Biologist on site to review site conditions and shall review and comment on the As -built drawings, baseline monitoring report and annual monitoring report(s) a. The Contractor shall meet on site with the Biologist following the preparation of the As -built drawings to review site conditions. The Biologist shall review the As - built drawings and provide written comments to the Engineer. Contractor shall address comments on the As - built drawings that vary from the construction contract documents. b. The Contractor shall meet on site with the Biologist to review site conditions, after the Biologist has prepared the Baseline Monitoring Report, and then provide and submit written comments, on the maintenance and contingency guidance provided in the Baseline Monitoring Report, to the Engineer. c. The Contractor shall meet with the Biologist on site one month prior to the end of the plant establishment period to review site conditions. The Contractor shall review the Annual Monitoring Report, and then provide and submit written comments, on the maintenance and contingency guidance provided in the Annual Monitoring Report, to the Engineer one month prior to the end of the plant establishment period. North Parking Lot • Fences are not needed between the parking lot and McDonald's to the north, AM/PM to the west — delete from plans or provide vinyl coated • Need additional vines (Boston Ivy is recommended) for wall next to AM/PM • Construct a temporary noise wall for apartments on the north and east sides of the site if the north lot will be used for construction staging. This was done by Sound Transit on Beacon Hill. • Sheet 386: Sound Transit needs to coordinate with McDonald's for pedestrian path from parking lot to restaurant property. It looks like there is an irrigation line shown along the potential ped alignment. • Evergreens should be added to screen retaining walls • • City of Tukwila Department of Community Development File Number LO& -(7$a LAND USE PERMIT ROUTING FORM TO: Building ;)C Planning Public Works Fire Dept. Police Dept. Parks/Rec Project: co o,> Lf__"-tCS— SI . I tnnc (vre-vvt Update date: Address: 3c evt A_✓ s 40 5 ( A'✓ s Date transmitted: 1 ` / 7 / 0 L Response requested by: / % 2 2-/C)& Staff coordinator: kl a r C') ; ¢s-i.o Date response received: REVIEWERS: Please specify how the attached plans conflict with your ADOPTED development regulations, including citations. Be specific in describing the types of changes you want made to the plans. When referencing codes, please identify the actual requirement and plan change needed. The Planning Division review does not supplant each department's ability to administer its own regulations and permits. However, project consistency at the Planning review stage is important to minimize significant later design changes. More than minimal design changes require further Planning Commission review, even if alteration is required to satisfy a City requirement. This further review is typically a minimum 60 -day process. Requirements based on SEPA (e.g., not required by an adopted development regulation) MUST identify the impact being mitigated, the policy basis for requiring mitigation, and the method used to calculate the mitigation required. Calculations of project impacts and the mitigation required (e.g., water capacity, road level of service analyses, or turning analyses) may be required of the applicant. COMMENTS (Attach additional comment sheets and/or support materials as needed.) c Plan check date: Comments prepared by: S Update date: MEMORANDUM December 6, 2006 TO: Nora FROM: Sandra RE: Southcenter Boulevard Improvements/Sound Transit 1 have reviewed the Wetland and Stream Delineation and Conceptual Mitigation Plan, JARPA form, and the Contract Drawings for the above-mentioned project and have the following comments. Wetland and Stream Delineation and Conceptual Mitigation Plan Report 1. A security fence is shown around the proposed regional detention facility. Details of the fence were not provided, but it is assumed that it will be a standard chain link fence. Given that the fence will surround the stormwater retention area, passing through the buffer and crossing the stream and a wetland, provisions should be made to allow wildlife passage through the fence, at least in some locations. Please indicate how this will be done. 2. The classification of the unnamed tributary is not consistent between Table 3-1 and Section 3.2.3.4. Has this stream been determined to be intermittent (and therefore, a Type 4 watercourse)? Contract Drawings (RL402LP13 — 16) 3. Planting details have not been provided for riparian and buffer enhancement, mulching, or proposed mitigation of temporary buffer impacts. Details should also include provisions for irrigation until plants are established. 4. Drawing R402LP14 specifies Rosa pisocarpa (the name is misspelled on the plan) for planting in the upland buffer. This species normally prefers and does not appear to be appropriate for upland planting unless it is close to the water. Please comment. CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 CITY OF TUKWILA NOTICE OF APPLICATION PROJECT INFORMATION Sound Transit has filed a request for permits to widen Southcenter Boulevard to accommodate rail support structures associated with the Tukwila Freeway Route as well as automobile traffic. The work will require Director approval for reductions to wetland and watercourse buffer areas, see reverse for a map. Permits applied for include: L06-080 Sensitive Area Special Permission - Director Other known required permits include: Hydraulic Project Approval from Washington State Department of Fish and Wildlife Section 404 Permit from the US Army Corps of Engineers Studies required with the applications include:Wetland and Stream Delineation and Conceptual Mitigation Plan Existing environmental documentation is sufficient to satisfy substantive and procedural SEPA compliance. APPLICATION AVAILABLE FOR PUBLIC REVIEW The application is available for review at the City of Tukwila, Department of Community Development (DCD), located at 6300 Southcenter Boulevard #100, Tukwila, WA 98188. OPPORTUNITY FOR PUBLIC COMMENT Your written comments on the project are requested. They must be delivered to DCD at the address above or emailed no later than 5:00 P.M., December 8, 2006. No public hearing is required for this request. APPEALS You may request a copy of any decision, information on hearings, and your appeal rights by calling DCD at (206) 431-3670. For further information on this proposal, contact Nora Gierloff at (206) 431-3670 or ngierloff@ci.tukwila.wa.us or visit our offices at 6300 Southcenter Boulevard, Suite #100, Monday through Friday, 8:30 a.m. to 5:00 p.m. • • -.; -;4• „A 7 -1 A I .47 CD .- ;;ti--- - •C.. I-, •ct- 107-- 1 SOVTHCENT BLVD— SEATTLE TACOMA /NT'L A IRPORT S 54T14 ST --4\--- "---ill • ,... 1 i \ , PROJECT LOCATION MAP RAL PUGET SOUND REGIONAL TRANSIT • ...k I • - ____1 - IP •4*. 1 . • -4-(T....-0--7- ---;4-.4.(-------N 1 • A tp 0) () ' A __ _ . ___...........____v_)•, . (r)1 ' 1 1 IS------ -.cc-••••1* - I--.1 ---(f) I SOCfirifiCEN-T BL -V0---1 \ 'S 54TH ST 5 IN\ JECT LOCATION MAP CONTRACT CENTRAL Lill SOUTHCENTER BOULE CONTRACT NO: RTA, ISSUED FOR BID NOVEMBER 15, 2006 Dept. Of Community Development City of Tukwila AFFIDAVIT OF DISTRIBUTION 1,.r,,SAsovhPOOL__ HEREBY DECLARE THAT: Notice of Public Hearing Determination of Non -Significance Project Name: O (,4 I t`OM„44,1 Notice of Public.Meeting.. : Mailer's Signature: Mitigated Determination of Non - Significance Person requesting mailing: Board of Adjustment Agenda Pkt Determination of Significance & Scoping Notice Board of Appeals Agenda Pkt Notice of Action Planning Commission Agenda Pkt Official Notice Short Subdivision Agenda Notice of Application . Shoreline Mgmt Permit Notice of Application for Shoreline Mgmt Permit __FAX To Seattle Times Classifieds Mail: Gail Muller Classifieds PO Box 70 - Seattle WA 98111 Other Was mailed to each of the addresses listed on this year 20 DL day of f JOS/; in the P:GINAWYNETTA/FORMS/AFFIDAVIT-MAIL 08/29/003:31 PM Project Name: O (,4 I t`OM„44,1 Project Number: LN -6, tO Mailer's Signature: 'b • t?,44964f Person requesting mailing: yid e/7"-MA0A-U„ P:GINAWYNETTA/FORMS/AFFIDAVIT-MAIL 08/29/003:31 PM FEDERAL AGENCIES (U.S. ARMY CORPS OF ENGI RS ( )FEDERAL HIGHWAY ADMINISTRATION ( ) DEPT OF FISH & WILDLIFE () U.S. ENVIR•ENTAL PROTECTION AGENCY () U.S. DEPT OF H.U.D. () NATIONAL MARINE FISHERIES SERVICE WASHINGTON STATE AGENCIES () DEPT OF SOCIAL & HEALTH SERV. () DEPT OF ECOLOGY, SHORELAND DIV ADEPT OF ECOLOGY, SEPA DIVISION' ( ) OFFICE OF ATTORNEY GENERAL SEND CHKLIST W/ DETERMINATIONS SEND SITE MAPS WITH DECISION ( ) OFFICE OF ARCHAEOLOGY ( ) TRANSPORTATION DEPARTMENT () DEPT NATURAL RESOURCES () OFFICE OF THE GOVERNOR () DEPT OF COMM. TRADE & ECONOMIC DEV. DEPT OF FISHERIES & WILDLIFE > KING COUNTY AGENCIES () BOUNDARY REVIEW BOARD () FIRE DISTRICT #11 () FIRE DISTRICT #2 () K.C. WASTEWATER TREATMENT DIVISION () K.C. DEPT OF PARKS & REC () KC. ASSESSOR'S OFFICE () TUKWILA SCHOOL DISTRICT () TUKWILA LIBRARY () RENTON UBRARY () KENT UBRARY () CITY OF SEATTLE LIBRARY () OWEST () SEATTLE CITY LIGHT () PUGET SOUND ENERGY () HIGHLINE WATER DISTRICT () SEATTLE WATER DEPARTMENT ( ) AT&T CABLE SERVICES ( ) KENT PLANNING DEPT ( ) TUKWILA CITY DEPARTMENTS: ( ) FIRE ( ) FINANCE ( ) BUILDING ()MAYOR () PUBLIC WORKS () POLICE () PLANNING () PARKS & REC. () CITY CLERK SCHOOLS/LIBRARIES UTILITIES CITY AGENCIES ( ) HEALTH DEPT () PORT OF SEATTLE ( ) K.C. DEV & ENV!R SERVICES-SEPA INFO CNTR ( ) KC. TRANSIT DMSION - SEPA OFFICIAL () KC. LAND & WATER RESOURCES ( ) FOSTER LIBRARY () K C PUBLIC LIBRARY ( )HIGHLINE SCHOOL DISTRICT ( ) SEATTLE SCHOOL DISTRICT () RENTON SCHOOL DISTRICT ( ) OLYMPIC PIPELINE ( ) VAL-VUE SEWER DISTRICT () WATER DISTRICT #20 ( ) WATER DISTRICT #125 () CITY OF RENTON PUBLIC WORKS ( ) BRYN MAWR-LAKERIDGE SEWERNVATER DISTRICT () RENTON PLANNING DEPT () CITY OF SEA TAC () CITY OF BURIEN ( ) TUKWILA PLANNING COMMISSION MEMBERS ( ) TUKWILA CITY COUNCIL MEMBERS () CITY OF SEATTLE - SEPA INFO CENTER - DCLU () STRATEGIC PLANNING OFFICE' • NOTICE OF ALL SEATTLE RELATED PING PROJ. OTHER LOCAL AGENCIES Jr4 DUWAMISH INDIAN TRIBE () P.S. AIR POLLUTION CLEAN AGENCY pq.SOUND TRANSIT - () DUWAMISH RIVER CLEAN-UP COALITION *SEND NOTICE OF ALL APPUCATIONS ON DUWAMISH RIVER ( ) PUGET SOUND REGIONAL COUNCIL ( ) SW K C CHAMBER OF COMMERCE (N(MUCKLESHOOT INDIAN TRIBE ( ) CULTURAL RESOURCES PROGRAM �FISHERIES PROGRAM l )WILDLIFE PROGRAM MEDIA pd SEATTLE TIMES ( ) SOUTH COUNTY JOURNAL P:ADM!NISTRATIVE\FORMSICHKLIST.DOC ( ) HIGHLINE TIMES ( ) CI.TUKWILA.WA.US.W MN PLIC NOTICE MAILINGS FOR PrTS SEPA MAILINGS Mail to: (comment period starts on date of mailing) Dept. of Ecology Environmental Review Section 'Applicant *Other agencies as necessary (checked off on attached list) *Any parties of record * send only the staff report, site plan and the SEPA Determination KC Transit Division — SEPA Official would like to receive information about all projects that might affect transit demand Send These Documents to DOE: SEPA Determination (3 -part from Sierra) Findings (staff report, usu. with MDNS) SEPA Checklist (filled out by applicant). Drawings/Plans of project (site plan, elevations, etc. from PMT's) Affidavit of Distribution (notice was mailed or sent to newspaper) SHORELINE MAILINGS: Notice of Application for a Substantial Development Permit must be mailed to owners and to property owners within 500 feet of subject property, comments are due 30 days after the notice of application is mailed/posted. The notice of Application for Shoreline Substantial Development Permit must include a statement that any person desiring to submit written comments on the application or desiring to receive notification of the final decision on the application may do so within 30 days of the notice of application. If a hearing will be held on the application, the hearing notice must include the information that written connnents may be submitted, or oral presentation made at the hearing. Shoreline Permit Notice of Decision: Mail to: (within 8 days of decision; 21 -day appeal period begins date received by DOE) Department of Ecology Shorelands Section State Attorney General *Applicant • Indian Tribes • *Other agencies as necessary (checked off on attached list). • Any parties of record * send only the staff report, site plan and the SEPA Determination Send These Documents to DOE and Attorney General: Permit Data Sheet Shoreline Substantial Development Permit (3 -part from Sierra) Findings (staff report or memo) . Shoreline Permit Application Form (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc. from PMT's) - Site plan, with mean high water mark & improvements — Cross-sections of site with structures & shoreline — Grading Plan — Vicinity map SEPA determination (3 -part from Sierra) Findings (staff report or memo) SEPA Checklist (filled out by applicant) Any background studies related to impacts on shoreline Notice of Application Affidavit of Distribution (notice was mailed) P: W DM[NISTRATIVSFORMS\CWCLIST.DOC • SOUNDTRANSIT October 23, 2006 Mr. Jack Pace Deputy Director Department of Community Development 6300 Southcenter Boulevard Tukwila, WA 98188-2544 • RECEIVED OCT 2 5 2006 COMMUNITY DEVELOPMENT SEPA Compliance for Central Link Light Rail, Tukwila Freeway Route JARPA Southcenter Boulevard and Gilliam Creek Regional Stormwater Facility Improvements Dear Mr. Pace: Compliance with the State Environmental Policy Act (SEPA) for the Tukwila segment of Sound Transit's Central Link Light Rail Transit Project was completed with Sound Transit's publication of the following documents: Central Link Light Rail Transit Project Final EIS (November 1999) and Addendum to the Final EIS for the Initial Segment (November 16, 2001), the Tukwila Freeway Route Final Supplemental Environmental Impact Statement (November 2001), the Initial Segment Environmental Assessment (February 2002), and the Tukwila Addendum (August 2004). In addition, the City concurred in its letter of May 5, 2006 that existing environmental documentation is sufficient to support city permitting of this work. We have reviewed these documents and conclude that they provide the appropriate substantive and procedural compliance pursuant to SEPA for the project elements addressed in the JARPA permit application. We anticipate the City can use these documents unchanged (per WAC 197-11-600) in support of the permit action before the City. If you have any questions regarding the SEPA compliance for this permit, please contact me at 206.398.5140. Sincerely, James Irish Link Environmental Manager JI:lts Southcenter Boulevard and Gilliam Creek Regional Stormwater Facility Improvements Central Puget Sound Regional Transit Authority • Union Station 401 S. Jackson St., Seattle, WA 98104-2826 • Reception: (206) 398=5000 • FAX: (206) 398-5499 • www.soundtransit.org BOARD CHAIR John W. Ladenburg Pierce County Executive BOARD VICE CHAIRS Connie Marshall Bellevue Councilmember Mark Olson Everett Councilmember BOARD MEMBERS Julie Anderson Tacoma Councilmember Mary -Alyce Burleigh Kirkland Councilmember Fred Butler Issaquah Deputy Council President Dow Constantine King County Councilmember Dave Enslow Sumner Mayor Doug MacDonald Washington State Department of Transportation Secretary Richard Marin Edmonds Councilmember Richard McIver Seattle Councilmember Greg Nickels Seattle Mayor Julia Patterson King County Councilmember Larry Phillips Chair, King County Council Aaron Reardon Snohomish County Executive Ron Sims King County Executive Claudia Thomas Lakewood Mayor Pete von Reichbauer Vice Chair, King County Council CHIEF EXECUTIVE OFFICER • SOUNDTRANSIT RECEIVED OCT 2 5 2006 COMMUNITY DEVELOPMENT October 23, 2006 City of Tukwila Department of Community Development 6300 Southcenter Boulevard Tukwila, WA 98188 Re: Permit Application for Southcenter Boulevard Improvement Project Dear City of Tukwila: • Sound Transit, in conjunction with the City of Tukwila, proposes to widen Southcenter Boulevard to accommodate rail support structures associated with the Tukwila Freeway Route of the Central Link Light Rail Project as well as automobile traffic. This work will require minor reductions in somewhat degraded wetland and watercourse buffer areas. Enclosed, are the following materials for your use in considering issuance of a Type 2 permit for a deviation from the Sensitive Area Ordinance for this project: 1. One-page permit application form 2. Checklist of items submitted with Application 3. Wetland and Stream Delineation and Conceptual Mitigation Plan (an approximately 60 -page mitigation plan that provides the following information: • Project Description • Quantitative information on impacts to wetlands and watercourses and associated buffers • Responses to review criteria set forth in TMC 18.45 080 G and TMC 18.45.100.F • Responses to relevant criteria for proposed use pursuant to TMC 18.45.070.B, TMC 18.45.090.B, and TMC 18.45.110.B and C. 4. Two copies of pertinent sheets from the construction documents indicating locations of all buildings, parking areas, walkways, property lines, planting areas, sensitive areas, sensitive area buffers and setbacks. Central Puget Sound Regional Transit Authority • Union Station 401 S. Jackson St., Seattle, WA 98104-2826 • Reception: (206) 398-5000 • FAX: (206) 398-5499 • www.soundtransit.org BOARD CHAIR John W.Ladenburg Pierce County Executive BOARD VICE CHAIRS Connie Marshall Bellevue Councilmember Mark Olson Everett Councilmember BOARD MEMBERS Julie Anderson Tacoma Councilmember Mary -Alyce Burleigh Kirkland Councilmember Fred Butier Issaquah Deputy Council President Dow Constantine King County Councilmember Dave Enslow Sumner Mayor Doug MacDonald Washington State Department of Transportation Secretary Richard Marin Edmonds Councilmember Richard McIver Seattle Councilmember Greg Nickels Seattle Mayor Julia Patterson King County Councilmember Larry Phillips Chair, King County Council Aaron Reardon Snohomish County Executive Ron Sims King County Executive Claudia Thomas Lakewood Mayor Pete von Reichbauer Vice Chair, King County Council CHIEF EXECUTIVE OFFICER • • A check covering the $340 permit application fee will follow next week. If you have any questions or need additional information for this permit application, please contact me at 206.398.5135 or TownsendC@SoundTransit.Org. Senior Environmental Planner Cc: James Irish, Sound Transit ! ® PUMPS • ® BOOM LIFTS TRACK LOADERS o SCISSOR LI A SZL.�Zi7LL -- F-- — 4 i 6515 V1/est !larginal Way •; Saadi; WA - 98106 t, 2773 SAWS o EXC Z ci 0 I k www.pa-ci-fi-crimeq_uipmentrentai.com J C S2JOSS32IdWOJ 21IV ® S a\t;'>'EiN_E9 ® Sa f ` l\u1 f 0 co •n 0 m • - 0 r m H U� aft 0 Southcenter Boulevard Improvements, Tukwila Washington Link Light Rail Project: South Corridor (South 154th Street & Southcenter Boulevard) Parcels are listed in the order they appear on plan sheets R403RPO1 — R403RP12 & W40-RP01. Parcel Number Address Taxpayer Name 0043000002 15250 32nd Ave S. United States Postal Service 0043000405 3211 S. 154th St. J. S. Lee Investment LLC 0043000015 15247 Pacific Hgwy S. K&S Developments LLC 0043000013 15247 Pacific Hgwy S. K&S Developments LLC 0043000070 15252 Pacific Hgwy S. BP West Coast Products LLC 0043000080 No Address Provided Robert Coniskey 0043000075 15244 Pacific Hgwy S. Partners Preferred Yield Inc. 0043000210 15244 Pacific Hgwy S. Partners Preferred Yield Inc. 0043000335 3816 S 154th Ln FSF West Colonial Assoc. LLC 0043000170 3900 Southcenter Blvd Tuazon Properties LLC 0043000184 3736 S. 154th St. John R. Englund 0043000200 3700 S. 154th St. Kirkland Investments Inc 0043000197 3726 S 154th St. Shellie Sadrali 0043000195 3722 S. 154th St. Make Investments LLC 0043000216 4025 Southcenter Blvd O'Hare Cottage Woods LLC 0043000225 15234 40th Ave. S. Ferid & Dina Masic 0043000227 15240 40th Ave. S. Vernon H. Kaczmarski 0043000216 4025 Southcenter Blvd O'Hare Cottage Woods LLC 2223049096 4220 S. 154th St. Willow Creek Apartments 2223049048 15222 42nd Ave S. Tamela J. Wolff 2223049078 4910 S. 154th St. Marvin Jr. & Juanita Johnson 2223049041 4217 Southcenter Blvd O'Hare Cottage Woods LLC 0043000219 15405 42nd Ave. S. Ashoo Ohri & Rachna Sachar 0043000238 15227 42nd Ave S. Douglas S. Murray 0043000224 4036 S 154th St. Douglas S. Murray 2223049058 No Address Given Allenns Demolition & Exc, 2223049077 4234 S. 154th St. Michael J. Guerzon 2223049003 4708 Southcenter Blvd Pacific Park Place Apartments LLC 2223049059 No Address Given Michael J Guerzon SR518 No Address Given WSDOT 2223049099 4910 S. 154th St. Thuy Linh Bui 2223047777 (Parcel D) No Address Given Bui, Cooper & Purizaca 2223049089 4819 S. 154th St. Leo Cooper 1157200015 No Address Given Leroy Brown 1157200033 15425th 53rd Ave S. Jankelson et al 1157200013 5200 Southcenter Blvd Riley W. Pleas & J. L. Brotherton 0042000280 4415 S. 150th St. School District No. 406 RE Page 1 of 2 10/23/2006 CEIvitrj OCT 2 5 2006 COMMUNITY DEVELOPMENT Southcenter Boulevard Improvements, Tukwila Washington Link Light Rail Project: South Corridor (South 154th Street & Southcenter Boulevard) 0042000335 15046 43rd P1. S. Bradley & Rose Santos 0042000345 No Address Given John W. & Judith A. Farden 0042000360 No Address Given John M. & Christi M. Ester 0042000348 No Address Given Freddie N Ferrer Page 2 of 2 10/23/2006 Agency Relurence #: Circulated by: AGENCY USE ONLY Date Received: (local govt. or agency) JOINT AQUATIC RESOURCES PERMIT APPLICATION FORM (JARPA) (for use in Washington State) DEQ PLEASE TYPE OR PRINT IN BLACK INK. "tit/ r� Application for a Fish Habitat Enhancement Project per requirements of RCW 77.55.290. You must submit a co completed JARPA application form and the (Fish Habitat Enhancement JARPA Addition) to your local Government Planning Department and Washington Department of Fish & Wildlife Area Habitat Biologist on the same day. NOTE: LOCAL GOVERNMENTS — You must submit any comments on these projects to WDFW within 15 working days. ECY 070-15 (Rev. 11/04) JARPA Contact the State of Washington Office of Regulatory Assistance for latest version or call 360/407-7037 or 800/917-0043 1 Based x [] • • x • • on the instructions provided, Local Government for shoreline: Washington Department of Fish Washington Department of Ecology Washington Department of Natural Corps of Engineers for: Coast Guard for: II For Department of Transportation Ecology/Department of Transportation I General am ['Substantial •Floodplain and projects sending copies of this application Development Management Wildlife for HPA (Submit 3 for 401 Water Quality Certification Resources for Aquatic Resources x Section 404 Bridge Act Permit only: This project will Water Quality Implementing •Conditional x copies Critical • ❑ be to the following: (check all that Use Variance Areas Ordinance to WDFW Region) (to Regional Office -Federal Use Authorization Notification Section 10 permit Private Aids to Navigation designed to meet conditions of Agreement •Exemption Permit (for the apply) Unit) non -bridge most current •Revision projects) SECTION A - Use for all permits covered by this application. Be sure to ALSO complete Section C (Signature Block) for all permit applications. 1. APPLICANT Sound Transit MAILING ADDRESS Union Station 401 S. Jackson Street, Seattle, WA WORK PHONE 206-398-5135 E-MAIL ADDRESS townsendc(o�soundtransit.orq HOME PHONE FAX # 206-398-5222 If an agent is acting for the applicant during the permit process, complete #2. Be sure agent signs Section C (Signature Block) for all permit applications 2. AUTHORIZED AGENT Chris Townsend MAILING ADDRESS Union Station 401 S. Jackson Street, Seattle, WA WORK PHONE 206-398-5135 E-MAIL ADDRESS townsendc@soundtransit.org HOME PHONE FAX # 206-398-5222 3. Relationship of applicant to property: 0 OWNER • PURCHASER • LESSEE • Project owner/licensee 4. Name, address and phone number of property owner(s) if other than applicant: Jack Pace. 6200 Southcenter Blvd. Tukwila WA 98188 (206)431-3686 5. Location (street address, including city, county and zip code, where proposed activity exists or will occur) Southcenter Blvd from 32nd to 53rd Ave South, Tukwila, Washington 98188 Local govemment with jurisdiction (city or county) City of Tukwila Waterbody you are working in Gilliam Creek and tributaries Tributary of Green River/Duwamish WRIA # 9 Is this waterbody on the 303(d) List** YES If YES, what parameter(s)? • NO x Shoreline designation n/a "For 303d List, http://www.ecv.wa.gov/programs/wq/303d/index.html Zoning designation Low and High Density Residential % Section south Section 22 Township 23 N Range 4 E Govemment Lot DNR stream type if known NP (mainstem) and NS (all other) Latitude and Longitude: Lat: W 122 degrees 17' 33" Long: N 47 degrees 28" Tax Parcel Number see attached ECY 070-15 (Rev. 11/04) JARPA Contact the State of Washington Office of Regulatory Assistance for latest version or call 360/407-7037 or 800/917-0043 1 6. Describe the current use of the property, and structures existing on the property. Have you completed any portion of the pr*osed '- activity on this property? YES El NO For any portion of the proposed activity already completed on this property, indicate month and year of completion. The project is located along the north and south sides of S 154th Avenue / Southcenter Blvd in the City of Seatac and Tukwila (Sheet 1 and 2). Within the City of Seatac, the project extends from 32nd Ave. S. to International Blvd on S 154th St. S. On the east side International Blvd (AKA Pacific Hwy/State Route 99), S. 154th Street becomes Southcenter Blvd and is within the City of Seatac. No sensitive areas were identified within the City of Seatac within the project area. A retaining wall located at the eastern portion of the project area has been installed. The retaining wall did not disturb aquatic resources but did affect stream buffers. The activity was completed in Summer of 2005. Is the property agricultural land? ❑ YES © NO Are you a USDA program participant? 0 YES El NO 7a. Describe the proposed work that needs aquatic permits: Complete plans and specifications should be provided for all work waterward of the ordinary high water mark or line, including types of equipment to be used. If applying for a shoreline permit, describe all work within and beyond 200 feet of the ordinary high water mark. If you have provided attached materials to describe your project, you still must summarize the proposed work here. Attach a separate sheet if additional space is needed. Sound Transit, in conjunction with the City of Tukwila, proposes to widen portions of S. 154th Avenue and Southcenter Blvd and improve existing stormwater conveyance facilities. The road will be widened approximately 20 feet from 32nd Avenue S. (west of International Blvd to 53`d Avenue S. to accommodate rail support structures associated with the Tukwila Freeway Route (TFR) of the Central Link Light Rail Project as well as automobile, pedestrian, and bicycle traffic. Additionally, as part of this work, improvements will be made to the stormwater drainage collection and conveyance system along the improved Southcenter Blvd. This project will affect wetlands, streams, and buffers. These impacts include the following: • Removing 22,143 square feet (0.51 acre) of wetland and stream buffer vegetation along Southcenter Boulevard o Disturbing 986 square feet (0.023 acre) of Gilliam Creek bed during installation of temporary bypass pipe o Disturbing 110 square feet (0.003 acre) of Wetland GC -5 during security fence installation surrounding the Gilliam Creek ravine o Piping 583 square feet of the Northwest Tributary of Gilliam Creek and 40 feet of a backwater area that currently flows through a highly degraded constructed stormwater swale. o Extending a culvert on the Northwest Tributary of Gilliam Creek approximately 10 feet and affecting 214 square feet of stream channel. a Placing 100 square feet of quarry spalls at two new stormwater outfall locations at the edge and along the banks of the unnamed Tributary of Gilliam Creek. o Installing a new 96" stormwater outfall in Gilliam Creek which will result in approximately 52 square feet of permanent stream impact • Filling Wetland GP -3 (166 square feet) to accommodate a new maintenance/access road. o Converting 16,371 square feet (0.38 acre) of wetland and stream buffer area to roadway, roadway shoulder, sidewalks, water quality facilities, and access roadways. PREPARATION OF DRAWINGS: See sample drawings and guidance for completing the drawings. ONE SET OF ORIGINAL OR GOOD QUALITY REPRODUCIBLE DRAWINGS MUST BE ATTACHED. NOTE: Applicants are encouraged to submit photographs of the project site, but these DO NOT substitute for drawings. THE CORPS OF ENGINEERS AND COAST GUARD REQUIRE DRAWINGS ON 8-1/2 X 11 INCH SHEETS. LARGER DRAWINGS MAY BE REQUIRED BY OTHER AGENCIES. 2 7h. Descr,'be the purpose of the proposed work and why you want or need to perform it at the site. Please explain any specific needs that have influenced the design. It is necessary to widen Southcenter Blvd to accommodate additional traffic that will result from the light rail transit station at the corner of S. 154th and International Blvd. The project will also construct a median that houses a column support for the light rail structure. The work associated with stormwater upgrades will improve the water quality and reduce the flow velocities. 7c. Describe the potential impacts to characteristic uses of the water body. These uses may include fish and aquatic life, water quality, water supply, recreation and aesthetics. Identify proposed actions to avoid, minimize, and mitigate detrimental impacts and provide proper protection of fish and aquatic life. Identify which guidance documents you have used. Attach a separate sheet if additional space is needed. The project area consists of existing roadways, gravel shoulders, fill slopes, storm drain systems, utilities, and undeveloped land. Surrounding land uses primarily include multifamily housing with some office buildings and commercial uses. Gilliam creek and several tributaries flow through the project area, from north to south and west to east. Stream buffers intersect with the roadway along the alignment. The Gilliam Creek basin consists of 6 subbasins: Riverton Heights, Crystal Springs, 1-5 West, 1-5 East, Southcenter, and City Hall. The project area is located in the eastern half of the Riverton Heights subbasin, which is the largest of the six subbasins. The following describes the existing conditions of the wetlands, stream, and buffers in the project area and the resources that will be affected. Refer to Table 1 in the Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements, Tukwila, Washington (Parametrix October 2006) for more detailed information on the remaining the wetlands, streams, and buffers in the project corridor. Northwest Tributary of Gilliam Creek and buffer The northwest tributary of Gilliam Creek flows along the northern portion of the study area. The stream is piped from the north and flows through a rip rap stormwater swale. The swale is surrounded by Himalayan blackberry and a chain link fence. The stream is piped under Southcenter Blvd. The culvert outfalls onto a landscaped portion of the stream between Southcenter Blvd and an apartment complex containing a riprap bed and bank, manicured mowed grass riparian area, and a cement footbridge. According to the City of Tukwila code (TMC 18.45.100), the stream at this location is likely to be classified as a Type 4 Watercourse and would require a 50 -ft buffer. Unnamed Tributary of Gilliam Creek and buffer The stream is piped under a driveway and flows in an open grass lined swale on the south side of Southcenter Blvd. The buffer of the creek consists of roadway. shoulder, steep grassy slope, maintained lawn, Himalayan blackberry, and a few red alder trees. According to the City of Tukwila code (TMC 18.45.100), the stream at this location is likely to be classified as a Type 4 Watercourse and would require a 50 -ft buffer. North Tributary of Gilliam Creek and buffer The north tributary starts near the intersection of SR -99 and S 144th Street and originates on the west side S. 148th St. It is culverted under 42nd Ave S., S. 151St St, and S. 150th St. The tributary flows through a narrow ravine and then connects to the mainstem of Gilliam Creek. The channel in the project area mainly consists of sands and some gravel and the banks are deeply incised. Buffer vegetation in the northern portion of the ravine contains native shrubs and trees and contains more non-native invasive species as the creek flows to the east. According to the City of Tukwila code (TMC 18.45.100), the stream at this location is likely to be classified as a Type 3 Watercourse and would require an 80 -ft buffer. Mainstem Gilliam Creek and buffer The main stem of Gilliam Creek flows from the south side of Southcenter Blvd. to the north side. Construction of Southcenter Blvd and a residential apartment complex has resulted in confining Gilliam Creek to an existing ravine. At the north east end of the ravine, Gilliam Creek is piped approximately 500 feet. The outfall at this location consists of an existing 36" pipe with a concrete debris rack. This structure retains stormwater within the ravine and meters the flow of water reaching downstream locations. According to the City of Tukwila code (TMC 18.45.100), the stream at this location is likely to be classified as a Type 3 Watercourse and would require an 80 - ft buffer. 3 Wetland GP -3 Wetland GP -3 is located north and east of the Gilliam Creek ravine. This 166 square foot wetland contains emergent vegetation including lady fern, bindweed, and nightshade. Soils within the wetland were dark grayish brown (10YR 4/2) clay loam with gray (10YR 5/1) and brown (10YR 5/3) redoximorphic features. According to the City of Tukwila code, this wetland merits a Type 3 rating, but due to its small size, is not regulated and would not require a buffer. Wetland GC -5 Wetland GC -5 is 0.04 acre (1,889 square feet) in size and located in the western portion of the ravine, west of the right bank of Gilliam Creek North Tributary. This slope wetland is directly connected with the North Tributary. The hydrology of Wetland GC -1 is predominantly supported by a surface expression of regional groundwater. The water table in the wetland was at or near the surface during field investigation. Vegetation in the wetland was composed of lady fern, creeping buttercup, and Himalayan blackberry. Surrounding upland vegetation consists predominately of Himalayan blackberry. According to the City of Tukwila code, this wetlands merits a Type 3 rating and would require a 50 -ft buffer. Table 1. Wetlands and Streams Identified in the Southcenter Blvd Improvement Project Area Areas Buffer Wetland/ (Square Area Tukwila Requirements Stream Location Feet) (Acres) Ratingb in Feet' Classification' Wetland GC -1 Gilliam Creek 320 0.01 3 0 Shrub Wetland GC -2 Gilliam Creek 2,701 0.06 3 50 Shrub North Tributary Wetland GC -3 Gilliam Creek 767 0.02 3 0 Shrub North Tributary Wetland GC -4 Gilliam Creek 60 0.00 3 0 Shrub North Tributary Wetland GC -5 Gilliam Creek 1,889 0.04 3 50 Shrub North Tributary Wetland GC -6 Gilliam Creek 371 0.01 3 0 Shrub North Tributary Wetland GP -1 Isolated, northeast of ravine 153 0.004 3 0 Shrub Wetland GP -2 Is Isolated, northeast of ravine 248 0.006 3 0 Shrub Wetland GP -3 Isolated, northeast of ravine 166 0.004 3 0 Emergent Wetland 119 Gilliam Creek 871 0.02 3 0 Emergent (AR 52) Gilliam Creek Northwest Tributary — — 4 50 Riverine Gilliam Creek — — 3 80 Riverine Unnamed Tributary of Gilliam Creek — — 4 50 Riverine Gilliam Creek North Tributary — — 3 80 Riverine There will be temporary and permanent impacts to wetlands and streams from this project. The following information and Tables 2 and 3 provides a summary of these impacts: 4 WETLAND IMPACTS Temporary Impacts Temporary impacts to Wetland GC -5 will occur during installation of a security fence surrounding the Gilliam Creek ravine (Sheet 1 and 6; table 2). Approximately 110 -square -foot area of wetland vegetation will be removed. These impacts will be temporary as the existing vegetation (Himalayan blackberry and salmonberry) are expected to re -grow after the fence has been installed. The purpose of the fence is to prevent people entering the area during periods of high water levels and to also deter people from dumping materials into the wetlands, stream, and buffer areas. The fence must cross the wetland because it follows a property boundary line. Permanent Impacts There will be a total of 0.004 acre (166 square feet) of permanent impact to wetlands from this project. Construction of a new access/maintenance roadway at the northeast portion of the Gilliam Creek ravine will permanently fill all of Wetland GP -3 (Table 4-2 and Figure 4-3). Impacts from this activity will include removing emergent vegetation and reducing the amount of stormwater control and water quality functions available in this small wetland. Due to the small size of the wetland it currently provides limited hydrologic, chemical, and biologic functions. Table 2. Temporary and Permanent Wetland Impacts Wetland/Stream Impact Area (Acres) Impact Area (Sq. Feet) Description of Impact Temporary Wetland GC -5 0.002 110 Temporary Impact: Installing a security fence across the wetland. No permanent fill material will be placed in this wetland. Permanent Wetland GP -3 0.004 166 Permanent Impact: Filling all of Wetland GP -3 to accommodate the access/maintenance roadway. This road will serve the outlet structure in the Gilliam Creek ravine. TOTAL 0.006 276 STREAM IMPACTS Temporary Impacts Temporary impacts to streams will result from dewatering activities during the two culvert projects (at Northwest tributary and at the main stem of Gilliam Creek in the ravine). These impacts will include placing sandbags and diversion structures in the stream channel. Upon completion of the bypass procedures, the temporary impacts will be restored (Sheet 7). Permanent Impacts Northwest Tributary Two areas along the Northwest tributary will be affected by the project (Sheets 2 and 3). Stormwater improvements within Southcenter Boulevard will require filling about 0.01 acre (583 square feet) of the existing stormwater swale and piping approximately 20 feet of the Northwest Tributary of Gilliam Creek and about 40 feet of a backwater area (Sheet 2). This area will be filled with soil and replanted with landscape plants and grass. The area was previously filled, channelized, and surrounded with rip rap. Piping about 20 feet of the channel will result in a minimal loss of wildlife habitat and a minor decrease in organic input to downstream habitat. Due to its existing highly disturbed condition the loss of function is not expected to be significant. The second area is located about 300 feet east of the first impact area, on the south side of Southcenter Boulevard (Sheet 3). Widening Southcenter Boulevard will require extending a culvert on the Northwest Tributary of Gilliam Creek. The existing stream empties out of a culvert into a landscaped portion of the stream between Southcenter Boulevard and an apartment complex. The stream contains a rip rapped bed and bank. The riparian area is composed of a manicured mowed grass lawn and a cement footbridge. The culvert is proposed to be 5 extended approximately 10 feet resulting in an impact of 0.005 acre (214 square feet) of streambed. The overall impact to stream habitat and biotic functions in these two areas are limited. The segment of the stream that will be piped and that currently flows through the stormwater feature provides limited functions. The section of stream that will be piped to accommodate the roadway is comprised of a shallow riffle through an armored bed of angular rock and gravel. It does not contain habitat attributes that would be beneficial to fish (e.g. pools, or over hanging banks). The armored bed would provide habitat for aquatic invertebrates, however this would be limited due to periods of limited or no flow, and periods of relatively high flow resulting from the dynamic nature of urban stormwater in a watershed with limited stormwater management. Unnamed Tributary About 0.002 acre (100 square feet) of rip rap and quarry spalls will permanently affect the unnamed Tributary to Gilliam Creek (Sheet 4). The material will be placed in the edge of the tributary at two locations. The purpose of this action is to provide bank protection and energy dissipation for two new stormwater outfalls located along the edge of the tributary. This stream segment is highly altered and flows through a roadside area and within a maintained lawn. This tributary does not provide fish habitat but the adjacent riparian vegetation (blackberry and red alder) likely provides some limited organic matter output to downstream areas. Installation of the outfall protection would not likely result in significant alterations to how this system functions. Gilliam Creek Ravine Approximately 0.001 acre (52 square feet) of Gilliam Creek will be permanently filled to accommodate the new 96 -inch control structure and slotted weir (Sheets 5, 6, and 7). As a result of installing the new outfall, the ravine will flood to a higher elevation and the total area of stream that is currently flooded and propose to be flooded will be relatively the same. The current hydrologic and hydraulic conditions of the stream is influenced by repeated flooding, resulting in episodic deposition of fine material followed by scour as the channel volume decreases. As a result, habitat available for fish in the stream channel is currently limited. Construction of this project would not preclude possible future restoration of the channel. Limiting factors for improved channel habitat includes the residential developments and existing state highways, 1-405 and 1-5 located downstream. The habitat is also inaccessible due to the length of underground piping that the stream passes through. The streambed in the area where the proposed energy dispersal rock will be placed is currently composed of angular riprap rock (mean diameter of about 6 inches+) and gravel. The bed near the proposed culvert extension is predominately sand. Due to the current dynamic nature of the stream hydrology, it is assumed the proposed construction will not further impact stream function in the ravine. Buffer impacts There will be a total of 22,143 square feet (0.51 acre) of temporary buffer clearing and filling (Sheets 1 — 11). All the areas will be restored within the right of way to the same or better condition after work is completed. There will be a total of 16,371 square feet (0.38) acre of permanent buffer loss as a result of this project. MITIGATION Table 4 and Sheet 11 shows the impact and mitigation areas for this project. Mitigation for these impacts will be compensated by planting the upland buffer surrounding the ravine at a 1.6:1 ratio. About 27,000 square feet of existing deciduous forest will be enhanced by removing non-native plant species and planting native conifer trees and shrub species. Additionally, 3,500 square feet of riparian area adjacent to Gilliam Creek in the ravine will be enhanced with native shrubs. 6 Table 3. Temporary and Permanent Impacts to Streams Fill Area Fill Area (Sq. Water (Acres) Feet) Description of Impact Temporary Gilliam Creek in the ravine 0.023 986 During the stream by-pass and dewatering activities the stream will have sandbags, sump pumps, and foot traffic within the stream channel. Physical disturbance to the stream bed and banks may occur as a result of these activities. Permanent NW Tributary of Gilliam Creek (stormwater facility) 0.013 583 Piping the portion of the tributary that flows through an existing un -maintained stormwater swale NW Tributary of Gilliam Creek at 37th Place S. 0.005 214 Extending culvert and placing energy dispersing rock in the stream. Unnamed Tributary of Gilliam Creek at 40th Ave. S. 0.002 100 Placing energy dispersing rock in and along the banks of the tributary in two locations Gilliam Creek within the ravine 0.001 52 Extending culvert and placing energy dispersing rock in the stream. TOTAL 0.02 949 Table 4. Impact and Mitigation in the Southcenter Blvd Improvement Project Area Sensitive Area Streams and Wetlands Stream and Wetland Buffers Ravine Permanent Mitigation Impact (f) (ft2) (Ratio 1.8:1) Mitigation at Temporary Impact Site Buffer (ft2) Impact (&)a (Ratio 1:1) Permanent Buffer Impact Ravine Mitigation (ft2) (ft2) (Ratio 2.4:1) Gilliam Creek NW Tributary at 37th Place S. Northwest Tributary (stormwater facility) 583 600 — — 3,530 5,800 Northwest Tributary 214 300 750 750 1,252 2,200 Gilliam Creek Unnamed Tributary at 40th Ave S. Unnamed Tributary 100 200 2,140 2,140 2,045 3,400 Gilliam Creek in the ravine Gilliam Creek 52 2,000 15,565 15,565 4,914 8,000 Wetland GC -5 _ _ _ _ _ _ Wetland GP -3 166 400 — — Gilliam Creek at 51st Ave S. Gilliam Creek / Wetland 119 — — 3,688 3,688 4,630 7,600 Total 1,115 3,500 22,143 22,143 16,371 27,700 a Areas where temporary buffer impacts occur will be restored to pre -project conditions. 7 11. Will material be placed in wetlands? x❑ YES ❑ NO If YES: A. Impacted area in acres: 0.03 acres (both wetlands and waters of the U.S.) B. Has a delineation been completed? If YES, please submit with application. YES ❑ NO C. Has a wetland report been prepared? If YES, please submit with application ❑x YES ❑ NO D. Type and composition of fill material (e.g., sand, etc.) riprap, quarry spalls, sand bags E. Material source: Commercial sources F. List all soil series (type of soil) located at the project site, and indicate if they are on the county's list of hydric soils. Soils information can be obtained from the natural Resources Conservation Service (NRCS). Soils within this portion of the project area are urban soils and are unmapped. G. WILL PROPOSED ACTIVITY CAUSE FLOODING OR DRAINING OF WETLANDS? ❑ YES Ex NO If YES, IMPACTED AREA IS ACRES OF DRAINED WETLANDS. NOTE: If your project will impact greater than Y2 of an acre of wetland, submit a mitigation plan to the Corps and Ecology for approval along with the JARPA form. NOTE: A 401 water quality certification will be required from Ecology in addition to an approved mitigation plan if your project impacts wetlands that are: a) greater than Yz acre in size, or b) tidal wetlands or wetlands adjacent to tidal water. Please submit the JARPA foram and mitigation plan to Ecology for an individual 401 certification if a) or b) applies. 12. Stormwater Compliance for Nationwide Permits Only: This project is (or will be) designed to meet ecology's most current stormwater manual, or an Ecology approved local stormwater manual. Ex YES 0 NO If YES — Which manual will your project be designed to meet? King County Surface Water Design Manual, Sept 1998 as supplemented by the Department of Ecology's 2005 Stormwater Management Manual for Western Washington, 2005 edition. Tukwila has not yet adopted the 2005 KC SWDM manual. If NO — For clean water act Section 401 and 404 permits only — Please submit to Ecology for approval, along with this JARPA application, documentation that demonstrates the stormwater runoff from your project or activity will comply with the water quality standards, WAC 173.201(A). A SWPPP and TESC Plan will be prepared for this project to comply with local, state, and federal regulations. 8 7d. For in water construction work, will your project be in compliance with the State of Washington water quality standards for turbidity WAC 173.201A-110? x YES Ir NO (See USEFUL DEFINITIONS AND INSTRUCTIONS) During re -introduction of the water after the bypass procedures are completed (for culvert extensions) it is expected that there may be a short duration exceedance of water quality standards; however, BMP's such as re -introducing the water slowly and using sediment fences and sandbags to minimize the amount of sediment reaching downstream habitats. 8. Will the project be constructed in stages? YES ❑ NO E Proposed starting date: February 2007 Estimated duration of activity: Approximately 18 months (estimated date of completion is July 2008) 9. Check if any temporary or permanent structures will be placed: x Waterward of the ordinary high water mark or line for fresh or tidal waters AND/OR I■ Waterward of the mean higher high water for tidal waters? 10. Will fill material (rock, fill, bulkhead, or other material) be placed: x Waterward of the ordinary high water mark or line for fresh waters? If YES, VOLUME (cubic yards) 45 cy / 0.03 (acres) • Waterward of the mean higher high water for tidal waters? If YES, VOLUME (cubic yards) / AREA (acres) 11. Will material be placed in wetlands? x❑ YES ❑ NO If YES: A. Impacted area in acres: 0.03 acres (both wetlands and waters of the U.S.) B. Has a delineation been completed? If YES, please submit with application. YES ❑ NO C. Has a wetland report been prepared? If YES, please submit with application ❑x YES ❑ NO D. Type and composition of fill material (e.g., sand, etc.) riprap, quarry spalls, sand bags E. Material source: Commercial sources F. List all soil series (type of soil) located at the project site, and indicate if they are on the county's list of hydric soils. Soils information can be obtained from the natural Resources Conservation Service (NRCS). Soils within this portion of the project area are urban soils and are unmapped. G. WILL PROPOSED ACTIVITY CAUSE FLOODING OR DRAINING OF WETLANDS? ❑ YES Ex NO If YES, IMPACTED AREA IS ACRES OF DRAINED WETLANDS. NOTE: If your project will impact greater than Y2 of an acre of wetland, submit a mitigation plan to the Corps and Ecology for approval along with the JARPA form. NOTE: A 401 water quality certification will be required from Ecology in addition to an approved mitigation plan if your project impacts wetlands that are: a) greater than Yz acre in size, or b) tidal wetlands or wetlands adjacent to tidal water. Please submit the JARPA foram and mitigation plan to Ecology for an individual 401 certification if a) or b) applies. 12. Stormwater Compliance for Nationwide Permits Only: This project is (or will be) designed to meet ecology's most current stormwater manual, or an Ecology approved local stormwater manual. Ex YES 0 NO If YES — Which manual will your project be designed to meet? King County Surface Water Design Manual, Sept 1998 as supplemented by the Department of Ecology's 2005 Stormwater Management Manual for Western Washington, 2005 edition. Tukwila has not yet adopted the 2005 KC SWDM manual. If NO — For clean water act Section 401 and 404 permits only — Please submit to Ecology for approval, along with this JARPA application, documentation that demonstrates the stormwater runoff from your project or activity will comply with the water quality standards, WAC 173.201(A). A SWPPP and TESC Plan will be prepared for this project to comply with local, state, and federal regulations. 8 18. Will excavation or dredging be required in If YES: A. Volume: approximately 100 Cy (cubic water or wetlands? x YES 0 (acre) NO yards) /area 0.05 B. Composition of material to be removed: C. Disposal site for excavated material: D. Method of dredging: sand and gravel ADDRESS approved off site location See attached memoranda 14. Has the State Environmental Policy Act (SEPA) SEPA Lead Agency: Sound Transit YES D NO documentation for this project included: Central and Addendum to the Final EIS for the Initial Final Supplemental Environmental Impact Assessment (February 2002), and the Tukwila REQUIRED FOR A COMPLETE APPLICATION been completed x Exemption Environmental EIS (November 1999) Tukwila Freeway Route Segment Environmental LETTER TO WDFW AS SEPA Decision: DNS, MDNS, EIS, Adoption, Link Light Rail Transit Project Final Segment (November 16, 2001), the Statement (November 2001), the Initial Addendum (August 2004). Decision Date (end of comment period) SUBMIT A COPY OF YOUR SEPA DECISION 15. List other Applications, approvals or certifications from other federal, state or local agencies for any structures, construction discharges or other activities described in the application (i.e. preliminary plat approval, health district approval, building permit, SEPA review, federal energy regulatory commission license (FERC), Forest practices application, etc.). Also, indicate whether work has been completed and indicate all existing work on drawings. NOTE: For use with Corps Nationwide Permits, identify whether your project has or will need an NPDES permit for discharging wastewater and/or stormwater. TYPE OF APPROVAL ISSUING AGENCY IDENTIFICATION NO. DATE OF APPLICATION DATE APPROVED COMPLETED? Hydraulic Project Approval WDFW 10-23-06 No 401 Water Quality Certification WA Dept. of Ecology 10-23-06 No City of Tukwila Sensitive Area Review City of Tukwila 10-23-06 No ESA Consultation NOAA, USFWS none 11-2001 01-30-02 Yes 16. Has any agency denied approval for the activity you're applying for or for any activity directly related to the activity described herein? II YES x NO If YES, explain: ECY 070-15 (Rev. 11/04) JARPA Contact the State of Washington Office of Regulatory Assistance for latest version or call 360/407-7037 or 800/917-0043 SECTION B - Use for Shoreline and Corps of Engineers permits only: 17a. Total cost of project. This means $20 million 17b. If a project or any portion of a indicate if you will receive federal funds the fair market value of the project, including materials, labor, machine rentals, etc. project receives funding from a federal agency, that agency is responsible for ESA consultation. Please and what federal agency is providing those funds. See instructions for information on ESA.* • NO If YES, please list the federal agency. Federal Transit Administration (FTA) FEDERAL FUNDING x YES 18. Local government with jurisdiction: City of Tukwila 19. For Corps, Coast Guard and DNR permits, provide names, addresses and telephone numbers of adjoining property owners, lessees, etc. Please note: Shoreline Management Compliance may require additional notice — consult your local government. NAME ADDRESS PHONE NUMBER See attached memoranda 9 SECTION C - This section MUST be completed for an v permit covered by this application 20. Application is hereby made for a permit or permits to authorize the activities described herein. I certify that I am familiar with the information contained in this application, and that to the best of my knowledge and belief, such information is true, complete, and accurate. I further certify that 1 possess the authority to undertake the proposed activities. I hereby grant to the agencies to which this application is made, the right %enter the above-described location to inspect the proposed, in -progress or completed work. I agree to . wo ONLY a. - Jlr - . essary permits have been received.. DATE tOb51 a(.0 DATE SIG • - - - & F APP/ANT SIGNATURE OF AUTHORIZED AGENT 1 HEREBY DESIGNATE TO ACT AS MY AGENT IN MATTERS RELATED TO THIS APPLICATION FOR PERMIT(S). I UNDERSTAND THAT IF A FEDERAL PERMIT IS ISSUED, 1 MUST SIGN THE PERMIT. SIGNATURE OF APPLICANT DATE SIGNATURE OF LANDOWNER (EXCEPT PUBLIC ENTITY LANDOWNERS, E.G. DNR) THIS APPLICATION MUST BE SIGNED BY THE APPLICANT AND THE AGENT, IF AN AUTHORIZED AGENT IS DESIGNATED. 18 U.S.0 §1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of the United States knowingly falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious, or fraudulent statements or representations or makes or uses any false writing or document knowing same to contain any false, fictitious, or fraudulent statement or entry, shall be fined not more than $10,000 or imprisoned not more than 5 years or both. COMPLETED ,BY LOCAL OFFICIAL. A. Nature:of the existin ,,shoreline, •.(Describetypo,gf 4horeline, such as ;marine., stream,'lake, lagoon, marsh, bog, !swamp, flood 9, .. .� plain, floodway, delta, typetofabeach, .such as accretion;, erosion, high bank, low'bank, tor dike, material such as sand; gravel, mud, clay, '. crock, iriprap; and extent and:type ofI ulkheading, if any) •.B. In the event that.any* the.iproposedbuildingp. or: structures will exceed a height of thirty-five feet.above-the average grade' level, ;indicate the:approximatelocation of and 'numberof residential units, existing and, potential;• that will have an obstructed view: -.C. If the application jnvoivesa conditional use or vanance, set forth in full that portion of the; master program which provides that•the ';proposed, use may be. a conditional use, or,,inthe,case.ofa variance, from whichlhe.variance is being sought: These Agencies are Equal Opportunity and Affirmative Action employers. For special accommodation needs, please contact the appropriate agency in the instructions ECY 070-15 (Rev. 11/04) JARPA Contact the State of Washington office of Regulatory Assistance for latest version or call 360/407-7037 or 800/917-0043 10 SECT I ONS 3, 10, 15, 22, 23; T23N; R4E DIRECTIONS TO SITE: From 1-5 take the SR 518 (toward Southcenter Blvd) exit west. From SR 518 exit at Pacific Highway S. (SR 99) and tum right onto S. I54th St./Southcenter Blvd. Continue east (right). At 32nd Ave S., this is the beginning of the project corridor. Continue on Southcenter Blvd until 52nd Ave S. is reached. This is the east end of the project corridor. • C is1 7 LEGEND: PROJECT AREA is 0-) —W. - WEST -1-PROJECT-- L Q? PROJECT,-- a' LIM I,T I N _ 'S %54ITH I`� v. SEATTLE TACOMA INT'L A IRPORT { EAST - PROJECT ttt LIMIT 1 - 1 I 0 1200 2400 SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP SOUTHCENTER BLVD ROAD 1 MPROVEMENT PROJECT NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 LAT I TUDE: LONGITUDE: 47°27'58" 122°16'43" IN: GILLIAM CK BASIN AT: CITY OF TUKW 1 LA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET 1 OF 1I DATE: OCTOBER 2006 • AREA TO BE REPLANTED 12"SD • _} • EXIST S I PEWALK • . LEGEND 7/7 • • R40. 244-QO• R40'. 25+00 - PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT (AREA TO BE RE -SEEDED) PERMANENT STREAM IMPACT FRO TEMPORARY STREAM & WETLAND IMPACTS PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND TREAM SEGMENT KEY MAP 0 15 30 SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP GILLIAM CREEK NORTHWEST TRIBUTARY NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 LATITUDE: LONGITUDE: 47°27'58" I22°16'43" IN: GILLIAM CK BASIN AT: CITY OF TUKWILA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET 2 OF 11 DATE: OCTOBER 2006 EX CURB R40 28+0Q CULVERT RELOCATION AND EXTENSION J. f 7�� .mma mmsoae.A-1liiiiiiiamomm®:ANZAIVAIPIIIiMiritawAmsur MMMOOMMEftw �_ S I DEWALK WETLAND/STREAM BUFFER ! ail STREAM IS PIPED LEGEND PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT (AREA TO BE RE -SEEDED) PERMANENT STREAM IMPACT TEMPORARY STREAM & WETLAND IMPACTS PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND KEY MAP SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP GILLIAM CREEK NORTHWEST TRIBUTARY NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 LATITUDE: LONGITUDE: 47°27'58" 122°16'43° IN: GILLIAM CK BASIN AT: CITY OF TUKWILA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET 3 OF II DATE: OCTOBER 2006 STREAM BUFFER o o o o_o_o LEGEND PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT (AREA TO BE RE -SEEDED) PERMANENT STREAM IMPACT TEMPORARY STREAM & WETLAND IMPACTS PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND SILT FENCE HIGH VISIBILITY FENCE KEY MAP 0 25 50 SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP UNNAMED TRIBUTARY TO GILLIAM CREEK NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 LATITUDE: LONGITUDE: IN: AT: COUNTY OF: APPLICATION BY: SHEET 4 OF II 47°27'58" 122°16'43" GILLIAM CK BASIN CITY OF TUKW I LA KING SOUND TRANSIT DATE: OCTOBER 2006 SHEET! 6 C'e CO WETLAND X GC -6 GILLIAM CREEK NORTH TRIBUTARY • • WETLAND' GC -3 WETLAND N GP -3 0 WETLAND -2 SHEET 7 WETLAND GC -5 WETLAND GC -2 WETLAND GC- I •7 () 9, • 0- / o- • NOT TO SCALE PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP GILLIAM CREEK RAVINE KEY MAP NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98 1 04-2826 LATITUDE: LONGITUDE: 47°27'58" 122°16'43" IN: GILLIAM CK BASIN AT: C I TY OF TUKW I LA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET 5 OF 11 DATE: OCTOBER 2006 OHWM TEMPORARY BUFFER IMPACTS FROM SECURITY FENCE INSTALLATION (AREA WILL BE E -SEEDED AS NECESSARY) WETLAND GC -6 1 TEMPORARY WETLAND 1 IMPACT FROM SECURITY FENCE I INSTALLATION (AREA-WTEL BE- --- RE-SEEDED AS NECESSARY) GILLIAM CREEK NORTH TRIBUTARY WETLAND GC -3 S 52ND ST WETLAND GC -5 WETLAND GC -4 LEGEND //i ,00000 o_o_o PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT PERMANENT STREAM IMPACT TEMPORARY STREAM & WETLAND PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND MATCHLINE SEE SHEET 7 IMPACTS — — EXTREME POND ELEV=189.0 — — — POND OVERFLOW ELEV= 186.0 KEY MAP 0 25 50 SCALE IN FEET PURPOSE: TO WIDEN S I54TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP GILLIAM CREEK RAVINE DETAIL NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98 1 04-2826 LAT I TUDE: LONGITUDE: 47°27158" 122°1643" IN: GILLIAM CK BASIN AT: CITY OF TUKWILA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET 6 OF II DATE: OCTOBER 2006 EA • MATCHLINE SEE PROPOSED SECURITY FENCE - \ WETLAND GP -3 X x C. ItG7TL2AND (2) -...,_ — _ /,,_ ........„ _j - cp '0 „..., EXIST MH TO REMAIN WETLAND GC -2 G I LL I AM CREEK n NORTH TR I BUTARY U • • ELEVAT I ON 0. A I ELEVAT I ON 186.0 189.0 (:) 0 / C / .... 0 .•-' GILLIAM CREEK 0 1/ • s • PROPOSED •" ACCESS/ MAINTENANCENROAO EX -1:S -T I NG 36" SD .PROPOSED 96" FLOWS . CONTROL STRUCTURE . // / / WETLAND GC- I f; APFA // 00000 IMX r A MATCHLINE SEE SHEET 8 PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT PERMANENT STREAM IMPACT FROM QUARRY TEMPORARY STREAM & WETLAND IMPACTS PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND EXTREME POND ELEV= 189.0 SPALLS 1/ — — — POND OVERFLOW ELEV= 186.0 —SF— SILT FENCE ---HVF---- HIGH VISIBILITY FENCE KEY MAP 0 BYPASS PUMP =facl SAND BAG CHECK DAM 0 25 50 IMONi=1 SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP PROPOSED 96" FLOW CONTROL STRUCTURE ON GILLIAM CREEK NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTUE, WA 98104-2826 LATITUDE LONGITUDE 47°27'58" 122°16'43° IN: GILLIAM CK BASIN AT: CITY OF TUKWILA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET 7 OF 11 DATE: OCTOBER 2006 MATCHLINE SEE SHEET 7 ‘G/mmw CREEK REMOVE 12 •c STORM WATER ALDER & MAPLES POND jt RIP RA � LEGEND '�� ��/ '-- oo'o'oo ^^~ PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT (AREA TO BE RE—SEEDED) PERMANENT STREAM IMPACT TEMPORARY STREAM & WETLAND IMPACTS PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND EXTREME POND ELEv=|89.0 POND OVERFLOW [LEv=|os.o KEY MAP 0 25 50 SCALE I N FEET PURPOSE TO WIDEN S 154TH AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP G|LL|AM CREEK BUFFER |KAPACT NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 LATITUDE: LONGITUDE: IN: AT: COUNTY OF: APPLICATION BY: SHEET 8 OF // 47°27'58" GILLIAM CK BASIN CITY OF TUKWILA KING DATE: OCTOBER 2006 LINK LIGHT RAIL GUIDEWAY WETLAND/STREAM BUFFER— NEW UFFER— NEW PROPOSED MEDIAN SOUTHCENTER BLVD ROI 414, CI) i•1 •n ✓h ,� ..,. • b-_off. °�` ° EXISTING EDGE • �0_!:1°0°. OF PAVEMENT 0 0 0 0 0 0 .PROPOSED STORM .DRAIN (TIES INTO •EXISTING 48" SD) • i GILLIAM CREEK OHWM LEGEND PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT (AREA TO BE REPLANTED WITH NATIVE PERMANENT STREAM IMPACT /// —SF -- TEMPORARY STREAM & WETLAND IMPACTS PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND SILT FENCE —HVF HIGH VISIBILITY FENCE PLANTS) MATCHLINE SEE SHEET 9 KEY MAP 0 25 50 SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP GILLIAM CREEK BUFFER IMPACTS NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 LATITUDE: LONGITUDE: IN: AT: COUNTY OF: APPLICATION BY: SHEET 9 OF II 47°27'58" 122°16'43" GILLIAM CK BASIN CITY OF TUKW I LA KING SOUND TRANSIT DATE: OCTOBER 2006 MATCHL I NE SEE SHEET LINK LIGHT RA IL GUIDEWAY i 1 ‘ EXISTING EDGE OF PAVEMENT NEW RETAINING WALL :0, • • 74-00 -24•s0 totPr . ; SOUTHCE1•17t1i BLVD R4o 24", 40 9+00 o o o og 0 0 0 0 0 n n ..\ A i ... , I 0 1 \ A i BACK OF CURB LEGEND Li PERMANENT BUFFER IMPACT TEMPORARY BUFFER IMPACT (AREA TO BE PERMANENT STREAM IMPACT TEMPORARY STREAM & WETLAND IMPACTS PROJECT AREA STREAM OR WETLAND BUFFER EXISTING WETLAND SILT FENCE HIGH VISIBILITY FENCE • • REPLANTED WITH NATIVE PLANTS) \L- WETLAND STREAM BUFFER KEY MAP 0 25 50 SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP GILLIAM CREEK BUFFER IMPACTS NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 LATITUDE: LONG 1TUDE: 47°2758° 122° I 6143° IN: GILLIAM CK BASIN AT: CITY OF TUKWILA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET 10 OF 11 DATE: OCTOBER 2006 .PROPOSED 96" FLOW CONTROL STRUCTURE �.�. UPLAND CONIFER BUFFER ENHANCEMENT (27,000 SF) RIPARIAN ENHANCEMENT WILLOW & DOGWOOD LIVE - STAKE PLANTINGS (3,500 SF) PROJECT AREA • STREAM /WETLAND BUFFER EXISTING WETLAND EXTREME POND ELEV=189.0 - - - POND OVERFLOW ELEV=186.0 - ---SF-----SILT FENCE - H VF HIGH VISIBILITY FENCE // 0 25 50 SCALE IN FEET PURPOSE: TO WIDEN S 154TH/SOUTHCENTER BLVD AND PROVIDE STORMWATER QUALITY AND STORAGE DATUM: NAVD 88 VICINITY MAP GILLIAM CREEK WETLAND, STREAM & BUFFER MITIGATION NAME: CENTRAL LINK LIGHT RAIL SOUND TRANSIT ADDRESS: UNION STATION 401 S JACKSON ST SEATTLE, WA 98104-2826 KEY MAP LATITUDE: 47°27'58" LONGITUDE: 122°16'43" IN: GILLIAM CK BASIN AT: CITY OF TUKWILA COUNTY OF: KING APPLICATION BY: SOUND TRANSIT SHEET II OF II DATE: OCTOBER 2006 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements, Tukwila, Washington Sound Transit SOUNDTRANSIT October 2006 Parametrix RECEIVED OCT 2 5 2006 COMMUNI 1 Y DEVELOPMENT Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements, Tukwila, Washington Prepared for Sound Transit 401 S. Jackson Street Seattle, Washington 98122 206-398-5000 Prepared by Parametrix 411 108th Avenue NE, Suite 1800 Bellevue, WA 98004-5571 425-458-6200 www.parametrix.com October 2006 1553-2535-004 (02) CITATION Parametrix. 2006. Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements, Tukwila, Washington. Prepared by Parametrix, Bellevue, Washington. October 2006. Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila. Washington Sound Transit TABLE OF CONTENTS EXECUTIVE SUMMARY V 1. INTRODUCTION 1-1 1.1 PROJECT PURPOSE 1-1 1.2 PROJECT CONTACT 1-1 1.3 PROJECT DESCRIPTION 1-1 1.3.1 Southcenter Boulevard Improvements 1-1 1.3.2 Stormwater Improvements 1-3 1.4 REPORT CONTRIBUTORS 1-9 2. METHODS 2-1 2.1 REVIEW OF PUBLISHED INFORMATION 2-1 2.2 FIELD INVESTIGATION 2-1 2.2.1 Wetland Identification and Delineation 2-2 2.2.2 Stream/Watercourse Identification 2-3 2.3 IMPACT ASSESSMENT 2-4 3. EXISTING CONDITIONS IN PROJECT AREA 3-1 3.1 PROJECT SETTING 3-1 3.1.1 Topography, Drainage, and Land Use 3-1 3.1.2 Vegetation and Wildlife 3-1 3.2 WETLANDS AND STREAMS 3-2 3.2.1 WETLANDS 3-2 3.2.2 Wetland Functions 3-7 3.2.3 Streams 3-8 3.3 THREATENED, ENDANGERED, AND SENSITIVE SPECIES 3-10 4. IMPACTS 4-1 4.1.1 Wetland Impacts 4-1 4.1.2 Stream Impacts 4-11 4.1.3 Buffer Impacts 4-13 5. MITIGATION 5-1 5.1 AVOIDANCE AND MINIMIZATION 5-1 5.2 COMPENSATORY MITIGATION OF UNAVOIDABLE IMPACTS 5-3 5.2.1 Mitigation for Wetland Impacts 5-4 5.2.2 Mitigation for Stream Impacts 5-6 5.2.3 Mitigation for Buffer Impacts 5-6 5.3 ENVIRONMENTAL GOALS AND OBJECTIVES 5-9 5.3.1 Construction Plan 5-9 October 2006 1553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit TABLE OF CONTENTS (CONTINUED) 6. MONITORING PLAN 6-1 6.1 PERFORMANCE STANDARDS AND EVALUATION 6-1 6.2 MAINTENANCE AND ADAPTIVE MANAGEMENT 6-2 6.3 CONTINGENCY PLAN 6-2 6.4 PERFORMANCE SECURITY 6-3 7. LITERATURE CITED 7-1 ACRONYMS October 2006 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila. Washington Sound Transit BMPs Best Management Practices Ecology Washington State Department of Ecology ESA Endangered Species Act FEMA Federal Emergency Management Agency KCSWDM King County Surface Water Drainage Manual NOAA National Oceanic and Atmospheric Administration OHWM ordinary high water mark PHS Priority Habitats and Species RM river mile Sound Transit Central Puget Sound Regional Transit Authority SR 99 International Boulevard SWPP stormwater pollution prevention TESC temporary erosion and sediment control TFR Tukwila Freeway Route TMC City of Tukwila Municipal Code ACOE U.S. Army Corps of Engineers USDA U.S. Department of Agriculture USFWS U.S. Fish and Wildlife Service WSDOT Washington State Department of Transportation WRIA 9 Water Resource Inventory Area 9 553-2535-004 (02) iii Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit THIS PAGE INTENTIONALLY LEFT BLANK October 2006 1553-2535-004 (02) iv Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit EXECUTIVE SUMMARY Sound Transit, in conjunction with the City of Tukwila, proposes to widen Southcenter Boulevard. The road will be widened approximately 20 feet from 32°' Avenue S. (west of International Boulevard (State Route (SR) 99) to 53rd Avenue S. to accommodate automobile, pedestrian, and bicycle traffic and rail support structures associated with the Tukwila Freeway Route (TFR) of the Central Link Light Rail Project. As part of this work, improvements will be made to the stormwater drainage collection and conveyance system along the improved Southcenter Boulevard. Improvements to an existing stormwater outfall located along the mainstem of Gilliam Creek will also be constructed to accommodate runoff from the additional paved area of the widened road and reduce stream flow velocities. Gilliam Creek and three of its tributaries as well as ten wetlands are located immediately adjacent to the Southcenter Boulevard project area. Eight of the ten wetlands are less than 1,000 square feet and two of the wetlands are 1,889 and 2,701 square feet in size. Only two of the wetlands are hydrologically isolated, the remaining wetlands are associated with the mainstem of Gilliam Creek or the North Tributary of Gilliam Creek. All of the wetlands meet the City's criteria for Type 3 wetlands and only two of the largest wetlands are regulated by TMC and are required to have a 50 -foot buffer (TMC 18.45.080). Gilliam Creek flows through the project area from west to east. The western most tributary is the Northwest Tributary and this watercourse flows through pipes and constructed stormwater facilities and exists in the open channel on the south side of Southcenter Boulevard near the western portion of the project area. The mainstem of Gilliam Creek flows from west to east and is piped under Southcenter Boulevard, roads, and developments throughout the project area. The North Tributary of Gilliam Creek flows from the north to the south into a steep sided ravine and then converges with the mainstem of Gilliam Creek within the ravine before the creek is piped for approximately 1,300 feet under a residential developments and Southcenter Boulevard. Construction of the Southcenter Boulevard project will have temporary and permanent impacts to wetland, wetland buffers', streams, and stream buffers. Temporary impacts will include: • Removing 22,143 square feet (0.51 acre) of wetland and stream buffer vegetation along Southcenter Boulevard • Disturbing 986 square feet (0.023 acre) of Gilliam Creek bed during installation of temporary bypass pipe • • Disturbing 110 square feet (0.003 acre) of Wetland GC -5 during security fence installation surrounding the Gilliam Creek ravine Following construction, temporary impacts will be restored to a condition equal to or better than pre -project conditions. Permanent impacts are long -duration impacts associated with long-term operation of the project. Southcenter Boulevard widening and stormwater facility improvements will permanently impact wetlands, streams, and their buffers. Permanent impacts will include: ' There is only one wetland buffer that extends into the Southcenter Boulevard project area. This wetland is adjacent to Gilliam Creek near 51st Avenue S where the stream and wetland (Wetland 119) buffers overlap and was therefore assessed as one functioning stream buffer unit. October 2006 I 553-2535-004 (02) v Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit • Piping 583 square feet of the Northwest Tributary of Gilliam Creek and 40 feet of a backwater area that currently flows through a highly degraded constructed stormwater swale. • Extending a culvert on the Northwest Tributary of Gilliam Creek approximately 10 feet and affecting 214 square feet of stream channel. • Placing 100 square feet of quarry spalls at two new stormwater outfall locations at the edge and along the banks of the unnamed Tributary of Gilliam Creek. • Installing a new 96" stormwater outfall in Gilliam Creek which will result in approximately 52 square feet of permanent stream impact • Filling Wetland GP -3 (166 square feet) to accommodate a new maintenance/access road. • Converting 16,371 square feet (0.38 acre) of wetland and stream buffer area to roadway, roadway shoulder, sidewalks, water quality facilities, and access roadways. Sound Transit will provide compensatory mitigation for all unavoidable project impacts. The overall goals of the mitigation plan are to restore the 22,143 square feet of temporary buffer impact areas within the project corridor to equal or better than pre -project conditions. The permanent loss of 16,371 square feet of stream and wetland buffer will be replaced by providing 27,000 square feet of restored and protected upland forested habitat within the Gilliam Creek ravine. Additionally, the loss of 949 square feet of stream habitat and 166 square feet of wetland habitat will be compensated by providing 3,500 square feet of the riparian enhancement along the stream banks of Gilliam Creek. The net result of the compensatory mitigation will be an improvement in wetland, stream, and buffer conditions throughout the project area. Compensation for wetland and stream buffer impacts will satisfy the criteria in TMC 18.45.080 (G)' and TMC 18.45.100 (F). Detailed construction plans and specifications for all mitigation sites will be provided during permitting and final design. vi October 2006 1553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwi/a, Washington Sound Transit 1. INTRODUCTION 1.1 PROJECT PURPOSE Sound Transit; in conjunction with the City of Tukwila, propose to widen Southcenter Boulevard approximately 20 -feet from 32nd Avenue S. (west of International Boulevard (SR 99) to 53rd Avenue S. to accommodate rail automobile traffic, pedestrians, bicycles, and support structures associated with the Tukwila Freeway Route (TFR) of the Central Link Light Rail Project (Figure 1-1). As a part of this work, improvements will be made to various stormwater drainage collection and conveyance systems along the improved Southcenter Boulevard. Additionally, upgrades to an existing outfall, located on the mainstem of Gilliam Creek, will be constructed. The new outfall will be constructed to reduce stream velocities and to accommodate runoff from the additional paved area and the Tukwila light rail station. Sound Transit prepared this document to support the environmental permitting process for the Southcenter Boulevard improvement projects. This report describes wetlands and watercourses (also known as streams or surface waters) in the project area and discusses project -related impacts and proposed mitigation. The City of Tukwila requires a wetlands and watercourse Sensitive Area Study. This report was prepared to satisfy all requirements for this type of study according to the Tukwila Municipal Code (TMC) Chapter 18.45. The City also regulates areas of potential geologic instability, abandoned coalmines, and areas that contain archeological remnants as sensitive areas, but these areas are were not within the scope of this study. The City code defines "watercourse" as a stream or surface -water channel within the City limits (with the exception of the Green-Duwamish River). This report was prepared in accordance to standard practices for environmental assessment. The findings described in this report reflect the opinions and information obtained by Parametrix during the course of this study. Information regarding the roadway and stormwater engineering was obtained from Sound Transit's consulting engineers at Parsons Brinkerhoff and was also obtained through standard engineering practices. This information is considered to be current and accurate at the time the report is published. 1.2 PROJECT CONTACT The main contact for this project at Sound Transit is Chris Townsend, Senior Environmental Planner. Contact information for Mr. Townsend can be found on the front page of this report. 1.3 PROJECT DESCRIPTION 1.3.1 Southcenter Boulevard Improvements Southcenter Boulevard is proposed to be widened approximately 10 feet on the north side and 10 feet on the south side (Figure 1-2). Sidewalks, center turn lanes, bicycle lanes, landscape medians, and new curbs will be constructed. Additionally, several new retaining walls will be installed to reduce impact to sensitive areas and adjoining private property. October2006 I 553-2535-004(02) I-1 Welland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 1.3.2 Stormwater Improvements Modifications to an existing outfall structure on Gilliam Creek will occur as a result of this project (photos in Appendix A). Currently, the North Tributary of Gilliam Creek converges with the mainstem of Gilliam Creek within a ravine north of Southcenter Boulevard (see Figure 1-2 and Appendix A). Gilliam Creek then flows eastward into an existing 36 -inch culvert with a large stand pipe and debris cage which is then piped for approximately 1,300 feet to the east under residential developments. A large debris cage is present at the mouth of the 36 -inch culvert. Currently, during storm events water that flows through the ravine is detained because the existing outfall to the east is not large enough to allow all the water within the stream to flow out of the ravine unrestricted. As a result, water backs up within the ravine and acts as a detention facility. The proposed project will replace the existing 36 -inch outfall with a new 96 -inch control structure with a fixed low -flow orifice of 12 inches and an adjustable slotted weir. The low level of the weir is fixed at elevation 175 feet and extends to the top of the flow control structure. A storm crest "stage gage" will also be installed in the control structure to record the maximum pond elevation for various storm events. This will allow the City to monitor the facility immediately after major storm events and make adjustments to the slotted weir as necessary. A 24 -inch shear gate valve is also included, to drain the facility in the event that the orifice and slotted weir become blocked. There is a potential for large woody debris within the ravine to block the outlet piping and orifice. As a precautionary measure, the existing manhole and debris cage will be maintained as a secondary outlet, in the event that the primary outlet becomes blocked by woody debris. When completed, the water levels within the ravine will be slightly higher then current levels and the amount of water leaving the site will decrease in flow because the water will be "metered" out of the site from the slotted weir instead of completely filling the 36 -inch pipe as occurs now (Table 1-1). The decrease in flow will be similar to those for the smaller storms in the 2 -year to 10 -year range. The 96 -inch structure and slotted weir are designed to detain all floods for a maximum of 24 hours. For example, if a 2 -year storm event occurs (50 percent chance of occurring once in an average year) the pond will fill to the elevation of 178 feet and within 24 hours, the stream will be back to low flow elevations. The benefit of this project will lower the velocity of water leaving the site which tends to decrease the amount of scouring, erosion, and sedimentation occurring downstream and potentially improving downstream habitat. Table 1-2 shows the current and proposed change in flow velocity. Proposed drainage conveyance and water quality treatment were designed in accordance with the City of Tukwila requirements, the 1998 King County Surface Water Design Manual (King County 1998), the Stormwater Management Manual for Western Washington (Ecology 2001) and the City of Tukwila -adopted Gilliam Creek Basin Stormwater Management Plan (March 2001). I -2 October 2006 1553-2535-004 (02) — I----L-my''\ 1 1 i / \ i 1 1 , 1 1 1 YF--- f_ . , -____ H____ _1_ __..._ _L., ..17 1 ! • I I 1 I 1 ' L. ----1 — ---4 __L-- TLI ! 1 1. , T ir I WEST P1:-OJECT LIMITfs ' SEATTLE TACOMA INTIL A I RPORT r / LT - Scale: 1'1=24001 Filename: S59_F I G_1-1.DWG Contract No.: C 759 Jurisdiction Drawing No. Date: 10/03/06 LINK LIGHT RAIL PROJECT SOUTH CORR I DO?R SOUTHCENTER BLVD IMPROVEMENTS PROJECT OVERV 1 EW Drawing No.: FIGURE 1-1 Sheet No.: Rev.: • 3 • 4 • 5 •I• 0 0 0 o 3 :t• o C4 i .. o 0 • _._-_-___.__(.4,4z1Nr.01,1.1 :, :e ..1l.i..,•.1" - T!;r1,--i,•;__-_—...____.,!.1 ,1_ 1.I —1 - H-_._-__-.+_1.-'ti.1!I _, I .._! i - 1. I :_ .-; _/ .- . .-..-..ii-• l . - i-• 1- - _• - ,__/_: .",. I• ..;t 7 ...•L _ r). _Lr 1 _-: , , .;-. . -7';-.F. i - - I_- - ' _I,- i1•' _ .G _ 2! .R1__.__N_.•'-.: .E..1. a_, -i_; ___• ! -_-.__-LS-_4_-.T .1_•_ Ii .__--L_TI,iiT -•: L,L-..IAA_._.-. 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I •••••......ji SOUTHCENTER BLVD • L INK L IGHT RAIL ROUTE 11 PROJECT _LIM I T DIST BOUNDARY 1 1--T-m-1 SR 6.18 • •" • ___. . - ._ _J , _ S 156TH ST ; . _ LEGEND: — • - • - • — GILLIAM CREEK MAINSTEM GILLIAM CREEK NORTHWEST TRIBUTARY - • • - • • - • • - G I LL I AM CREEK NORTH TRIBUTARY GILLIAM CREEK UNNAMED TRIBUTARY PIPED SEGMENT OF CREEK (APPROX) SF— SILT FENCE HVF— HIGH VISIBILITY FENCE , ; • I • ...1_, I 1. , ---- - .i.-- 1 -1 ....i, ! • i -- -- •-! ,._ . FIGURE 4-4 L _ WETLAND 119 , 200 100 0 200 400 SCALE IN FEET Designed By. Drown By Checked By. No. Dote Dan Chk App. Revisions Approved By: Scale: I "=200' Filename: S59_F I G_ I -2.DWG Contract No.: C 759 Submitted: Dote: Approved: Date: Date: 10/03/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTH CENTER BLVD IMPROVEMENTS PROJECT OVERVIEW Drawing No.: FIGURE I -2 Sheet No.: Rev.: Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Table 1-1. Estimated Pre/Post Stage Levels in the Gilliam Creek ravine Storm Event Estimated Current Condition Estimated Proposed Condition Stage Elevation Stage Elevation Low Level 167 i 167 2 -Year 169 178 10 -Year 1733 181 25 -Year 178 185 W _ _ 100 -Year. __ - ---- -- --183 -..__..189.. _ Flood Flow 189 189 Table 1-2. Gilliam Creek Ravine, Estimated Pre/Post flow conditions Predevelopment Forested Storm Conditions Flow Event (cfs)a Decreased Estimated Downstream Flow Estimated Current Proposed Resulting From Condition Condition Detention Flow (cfs) Flow (cfs) Flow (cfs) 136 167 129 38 2 -Year 5 -Year 10 -Year 25 -Year 50 -Year 100 -Year 98 38 187 151 36 212 180 32 230 202 28 55 248 225 23 8 cfs = cubic feet per second In order to access and maintain the new proposed 96 -inch control structure, a new access and maintenance roadway will be constructed. This roadway will be located in roughly the same location as an existing gravel maintenance roadway but widened to provide safe access for removing debris from the control structure. The existing maintenance roadway is surrounded by Himalayan blackberry bushes. 1.4 REPORT CONTRIBUTORS Several consultants were instrumental in gathering the information used in this report. Wetland Delineations within the project corridor were conducted by both Herrera and Parametrix during studies for the TFR Light Rail project. A biologist at Herrera that coordinated and assisted in the identification of the wetlands and streams in the project area was Doug Gresham. William Kleindl with Parametrix delineated the majority of the wetlands within the immediate project area. Mr. Kleindl has over 11 years of experience in wetland science and for about four years, Mr. Kleindl was a wetland delineation instructor for the University of Washington certificate program in Wetland Science and Management. Marti Louther, with Parametrix, assisted in the preparation of this report. Ms. Louther has over 11 years experience as a wetland biologist. October 2006 I 553-2535-004 (02) 1-7 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit THIS PAGE INTENTIONALLY LEFT BLANK 1-8 October 2006 1553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 2. METHODS Study methods consisted of reviewing the regulatory framework concerning sensitive areas and reviewing published information describing wetlands and streams within the vicinity of the project. The literature review was followed by field investigation and mapping to obtain more site-specific data on sensitive areas and potential impacts. The project footprint was then overlaid on the mapped sensitive areas to determine proposed sensitive area impacts. 2.1 REVIEW OF PUBLISHED INFORMATION Existing documents reviewed for this study included, but were not limited to: • A Catalog of Washington Streams and Salmon Utilization. Volume 1. Puget Sound Region. (Williams et al. 1975) • Central Link Light Rail Project, Tukwila Freeway Route Biological Assessment for Chinook, Coho, Marine Mammals, and Reptiles (Sound Transit 2001) • Federal Emergency Management Agency Map (FEMA 1995) • Gilliam Creek Basin Stormwater management Plan (Herrera and R.W. Beck 2001) • National Wetland Inventory, Des Moines, Washington quadrangle (USFWS 1987) • National Wetland Inventory, Seattle South, Washington quadrangle (USFWS 1987) • Near Term Action Agenda for Salmon Habitat Conservation, Green-Duwamish and Central Puget Sound Watershed, Water Resource Inventory Area 9 (WRIA 9 Steering Committee 2002) • Soil Survey of King County Area, Washington (Snyder et al. 1973). • Tukwila Freeway Rout Link Light Rail Study Area Sensitive Areas Study Wetlands and Streams (Parametrix 2004) • Tukwila Sensitive Areas Maps (1990) These documents provide background information on the soils, hydrology, topography, land use, wetlands, streams, and wildlife habitat in the project area. 2.2 FIELD INVESTIGATION Wetlands and streams along the Southcenter Boulevard project area were examined in June and July of 2002 (Herrera 2002) and additional site visits were conducted in 2003 (Parametrix 2004). In January 2005, Parametrix delineated wetlands and streams within the Gilliam Creek ravine and the entire project area. All wetlands and streams were reexamined in spring of 2005 by Parametrix staff (see Figure 1-2). In July 2006, additional wetland delineations east of the Gilliam Creek ravine were conducted as the project area was revised. October 2006 I 553-2535-004 (02) 2-1 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 2.2.1 Wetland Identification and Delineation For the purposes of this study, wetlands are defined as "areas that are saturated or inundated by surface water or groundwater at a frequency and duration sufficient to support, and which under normal circumstances do support, a prevalence of vegetation adapted for life in saturated soil conditions." (TMC 18.06.922; Environmental Laboratory 1987). Delineated wetlands were instrument -surveyed and field datasheets for wetlands are provided in Appendix B. Wetlands were delineated using the three -parameter method described in the Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987) and the Washington State Wetland Identification and Delineation Manual (Ecology 1997). To be considered a wetland, an area must have hydrophytic vegetation, hydric soils, and wetland hydrology. Data were collected for these parameters in areas representative of typical site conditions. Additional data were collected in associated uplands as needed to confirm wetland and stream boundaries. 2.2.1.1 Vegetation The dominant plants and their wetland indicator status were evaluated to determine if the vegetation was hydrophytic. Hydrophytic vegetation is defined as vegetation adapted to wetland conditions. To meet the hydrophytic vegetation criterion, more than 50 percent of the dominant plants must be Facultative, Facultative Wetland, or Obligate based on the wetland indicator category assigned to each plant species by the U.S. Fish and Wildlife Service (USFWS) (Reed 1997) (Table 2-1). Scientific and common plant names follow currently accepted nomenclature. Most names are consistent with Flora of the Pacific Northwest (Hitchcock and Cronquist 1973) and the PLANTS Database (USDA 1996). During the field investigation, staff observed and recorded the dominant plant species on data sheets for each data plot (Appendix B). Table 2-1. Definitions of Wetland Indicator Category Used to Determine the Presence of Hydrophytic Vegetation (Reed 1997) Category Symbol Definition to Obligate Wetland 1— 1 Plants a Facultative Z Wetland Plants gFacultative Plants W OBL ' Plants that almost always (>99% of the time) occur in wetlands, but which may rarely (<1 % of the time) occur in non -wetlands. FACW Plants that often (67-99% of the time) occur in wetlands, but sometimes (1-33% of the time) occur in non -wetlands. FAC Plants with a similar likelihood (33-67% of the time) of occurring in both wetlands and non -wetlands. NON-WETLAND Facultative Upland Plants Upland Plants, Not Listed FACU : Plants that sometimes (1-33% of the time) occur in wetlands but occur more often (67-99% of the time) in non -wetlands. Plants that rarely (<1% of the time) occur in wetlands, and almost always (>99% of the time) occur in non -wetlands (upland areas). UPL, NL 2-2 October 2006 1553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 2.2.1.2 Soils Generally, an area must have hydric soils to be a wetland. Hydric soil forms when soils are saturated, flooded, or ponded long enough during the growing season to develop anaerobic conditions in the upper part. Biological activities in saturated soil result in reduced oxygen concentrations and organisms turn to anaerobic processes for metabolism. Over time, anaerobic biological processes result in certain soil color patterns, which are used as indicators of hydric soil. Typically, low-chroma colors are formed in the soil matrix, and bright -colored mottles form within the matrix. Other important hydric soil indicators include organic matter accumulations in the surface horizon, reduced sulfur odors, and organic matter staining in the subsurface. Soils were examined by excavating sample pits to a depth of 18 inches or more to observe soil profiles, colors, and textures. Munsell color charts (Greytag Macbeth 1994) were used to describe soil colors. 2.2.1.3 Hydrology Project staff examined areas for evidence of wetland hydrology. An area is considered to have wetland hydrology when soils are ponded or saturated for at least 12.5 percent of the growing season. In cases, with strong evidence of the presence of hydric soil and hydrophilic plant communities, saturation or ponding for 5 percent of the growing season will satisfy the hydrology criteria. In the Puget Sound area, this amounts to approximately 14 days. Primary indicators of hydrology include surface inundation and saturated soils. Secondary indicators of hydrology include drainage pattems, watermarks on vegetation, water -stained leaves, and oxidized root channels. 2.2.1.4 Wetland Classifications, Ratings, Hydrologic Connectivity and Functions Wetlands in the project vicinity were rated based on Tukwila's rating system defined in TMC 18.45.080. Wetlands also were classified according to their hydrogeomorphic characteristics (Brinson 1993) and community structure (Cowardin et al. 1979). These classification systems are based on physical and ecological factors and have no regulatory intent or force. Hydrologic connectivity of wetlands to other Waters of the U.S. was based on best professional judgment of the field ecologists. Wetlands and streams were rated according to the City of Tukwila Municipal Code (TMC) 18.45.080 (B). Buffer widths assigned to wetlands reflect requirements of the TMC 18.45.080 (E). Wetlands associated with each other or with a watercourse are rated together as a single system. Wetland functions on the site were rated with a high, medium, or low assessment based on best professional judgment. 2.2.2 Stream/Watercourse Identification The City of Tukwila defines a stream or watercourse as: "a course or route formed by nature or modified by man, generally consisting of a channel with a bed and banks or sides substantially throughout its length along which surface water flows naturally, other than the Green/Duwamish River." (TMC 18.06.920). The ordinary high water mark (OHWM) of tributary streams within the project area was delineated based on the City of Tukwila's definition: "the mark that will be found by examining the bed and banks of a stream and ascertaining where the presence and actions of waters are so common and usual as to distinctly mark the soil from that of the abutting upland, in respect to vegetation" (TMC 18.06.605). Staff marked the centerline of Gilliam Creek where the channel was less than 2 feet wide and OHWM of channel was greater than 2 feet wide. October 2006 1 553-2535-004 (02) 2-3 Welland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Tukwila has developed a stream rating system based on existing habitat functions. Streams were rated according to the TMC 18.45.100 (A) and stream buffer widths were assigned to reflect requirements of TMC 18.45.100 (D). 2.3 IMPACT ASSESSMENT Sound Transit assessed impacts by overlaying the Southcenter Boulevard project construction footprint on mapped sensitive areas, buffers, and the shoreline zone to determine the area of disturbance. Impacts were classified as temporary or permanent, depending on the nature and duration of the disturbance. Impacts to functions were determined by evaluating the functions provided by the affected resource. The impact assessment provided the basis for determining mitigation needs. 2-4 October 2006 1553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 3. EXISTING CONDITIONS IN PROJECT AREA The following sections summarize general site characteristics of the project area, including topography, drainage, land use, and the delineated wetlands and streams. Detailed information regarding some of the wetlands and streams can be found in Tukwila Freeway Route Link Light Rail Sensitive Areas Study Wetlands and Streams (Parametrix 2004). The Gilliam Creek Basin Stormwater management Plan (Herrera 2001) includes detailed information on fish resources and potential effects on federally listed fish and wildlife in the project area. 3.1 PROJECT SETTING 3.1.1 Topography, Drainage, and Land Use The project area is within the lower Green-Duwamish River watershed in the Gilliam Creek drainage basin. At this location, the Green-Duwamish River historically had a mile -wide floodplain flanked by north -south trending ridges that rise 300 to 400 feet above the floodplain. Gilliam Creek, with a 1,835 -acre basin, flows southeast to the Green-Duwamish River, entering it at river mile (RM) 12.7 (Herrera 1996). Land use is primarily multifamily housing with some office buildings and commercial uses. The Gilliam Creek basin consists of six subbasins: Riverton Heights, Crystal Springs, I-5 West, I-5 East, Southcenter, and City Hall. The project area is located in the eastern half of the Riverton Heights subbasin, the largest of the six subbasins. The Gilliam Creek basin has been subject to considerable development over time. Construction of I-5 disrupted natural drainage collecting and redirected drainage flows. Additional runoff from the road surface contributes to this flow. It maintains this character to the alignment's end at SR 99. Soils within the project area are unmapped by the Soil Survey of King County (Snyder et al 1973). 3.1.2 Vegetation and Wildlife The project area is within the western hemlock (Tsuga heterophylla) vegetation zone (Franklin and Dyrness 1973). Major conifer species in this zone are Douglas fir (Pseudotsuga menziesii), western redcedar (Thuja plicata), and Sitka spruce (Picea sitchensis). Hardwoods, including big -leaf maple (Acer macrophyllum), red alder (Alnus rubra), and black cottonwood (Populus balsamifera var. trichocarpa), are less common and found primarily on disturbed sites and riparian habitats. The project area traverses a series of riparian, wetland buffer, and upland habitats. Grading for SR 518 has resulted in a steep embankment that bisects Gilliam Creek and consists of a mixture of maintained and mowed right-of-way, with forested areas located along Gilliam Creek. Trees consist of Douglas fir, western redcedar, red alder, and big -leaf maple, often with English ivy (Hedera helix) and Himalayan blackberry (Rubus armeniacus) in the understory. October 2006 1553-2535-004 (02) 3-1 Wetland and Stream Delineation and Conceptual Mitigation Plan S'outhcenter Boulevard Improvements: Tukwila. Washington Sound Transit The study area supports urban wildlife species such as raccoons and other small mammals that are tolerant of human disturbance. 3.2 WETLANDS AND STREAMS Ten wetlands and four stream segments were identified in the Southcenter Boulevard project area. The following sections describe these features. Table 3-1 provides a summary of the wetland and streams identified in the project area. The general locations of the wetlands and streams are shown in Figure 1-2. More detailed images of the wetlands and streams are shown in Section 4 below. 3.2.1 WETLANDS Six of the ten wetlands are located in the Gilliam Creek Ravine (Wetlands GC -1, GC -2, GC - 3, GC -4, GC -5, and GC -6). Of these, four are associated with Northwest Tributary of Gilliam Creek (Wetlands GC -2, GC -3, GC -5, GC -6) and two are small isolated wetlands on the bank of the mainstem of Gilliam Creek (Wetlands GC -1 and GC -4). Three wetlands (Wetlands GP -1, GP -2, and GP -3) are located near the proposed maintenance roadway for the Gilliam Creek proposed 96 -inch control structure. Wetland 119 (delineated for the Tukwila Freeway Route Light Rail project) is associated with the mainstem of Gilliam Creek, located at the east portion of the project area. The buffers for Wetlands GC -1 through GC -6 are shared with the buffer of Gilliam Creek North Tributary. The buffer conditions for Wetland 119 are described below According to the TMC, wetlands are classified as either Type 1, 2, or 3 wetlands. Wetlands that meet the requirements for a Type 3 wetland, but are less than 1,000 square feet are not regulated by the city therefore they do not require a buffer. TMC 18.45.180 states that wetlands that are 1,000 square feet and less that do not meet any of the criteria of TMC 18.45.080B are exempt from requirements of TMC Chapter 18.45. 3-2 October 2006 I 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Table 3-1. Wetlands and Streams Identified in the Southcenter Boulevard Project Areas Wetland/ Stream Location Areaa (Square Area Feet) (Acres) Buffer Requirements Ratingb in Feet3 Classification` Wetland 119 (AR 52) Wetland GC -1 Wetland GC -2 Wetland GC -3 Wetland GC -4 Wetland GC -5 Wetland GC -6 Wetland GP -1 Wetland GP -2 Gilliam Creek 871 0.02 3 Gilliam Creek 320 0.01 3 Gilliam Creek North Tributary Gilliam Creek North Tributary Gilliam Creek North Tributary Gilliam Creek North Tributary Gilliam Creek North Tributary Isolated, northeast of ravine Is Isolated, northeast of ravine Isolated, northeast of ravine Wetland GP -3 Gilliam Creek Northwest Tributary 0 767 0.02 60 0.00 3 1,889 0.04 3 371 0.01 3 50 153 0.004 3 248 0.006 3 Gilliam Creek Unnamed Tributary of Gilliam Creek Gilliam Creek North Tributary 166 Emergent Shrub Shrub Shrub Shrub Shrub Shrub Shrub Shrub 0.004 3 — 4 4 t ' 3 • 0 50 80 50 80 Emergent Riverine Riverine Riverine Riverine a b All areas based on instrument survey TMC 18.45.080B and 18.45.180. Type 3 wetlands less than 1,000 square feet with two or fewer vegetation classes are exempt from requirements of TMC Chapter 18.45 therefore do not require a buffer. ` Based on Cowardin et al. (1979). All wetlands are palustrine. 3.2.1.1 Wetland 119 (AR 52) Classification: Emergent Tukwila Rating: Type 3 (unregulated per TMC 18.45.O8OB) Buffer: 50 feet Wetland 119 is 871 square feet (0.02 acre) in size and is located on the left bank of Gilliam Creek main stem, just south of Southcenter Boulevard. This wetland is described in the Tukwila Freeway Route Link Light Rail Sensitive Areas Study Wetlands and Streams (Parametrix 2004). The following is an excerpt from that report. It has recently been subject to restoration activities. Willows and alders have been planted on the stream bank within the wetland. Based on the hydrogeomorphic classification system (Brinson 1993), it is a slope wetland. October 2006 I 553-2535-004 (02) 3-3 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Wetland 119 receives its main hydrologic input from groundwater, with some over bank flow from Gilliam Creek. Hydrologic indicators included freestanding water at five inches, watermarks on leaves, drainage patterns, and water -stained leaves. Vegetation within Wetland 119 consists of reed canarygrass, lady fern (Athyrium filix- femina), small -fruited bulrush, creeping buttercup, and stinging nettle (Urtica dioica). Soil has hydric characteristics and consists of low-chroma (10 YR 2/1), sandy clay loam. The mainstem of Gilliam Creek is located south of Wetland 119. The Wetland 119 buffer located south of Southcenter Boulevard is composed of grasses growing through sand and gravel between the road and the top of the riprap slope north of the wetland. The riprap contains herb Robert, and Himalayan blackberry. The remainder of the buffer in this area is forested with big leaf maple and willow. Data sheets AR -52 -TP -1 and AR -52 TP -2 describe data collected in this wetland and associated upland and can be found in Appendix B. 3.2.1.2 Wetland GC -1 Classification: Shrub TMC Type 3 Wetland (unregulated per TMC 18.45.080B) Buffer: 0 feet Wetland GC -1 is a 0.01 -acre (320 square feet) in size and is located in the southern portion of the study area along the left bank of Gilliam Creek mainstem. This slope wetland is not directly connected with Gilliam Creek, however is likely hydrologically connected to the stream during storm events. The hydrology of this Wetland GC -1 is supported by a surface expression of regional groundwater. The water table in the wetland is at or near the surface during the field investigation. Vegetation in the wetlands is comprised predominately of salmonberry (Rubus spectablis), which meets the criterion for hydrophytic vegetation because 100 percent of the dominant species are wetland plant species. The surrounding upland vegetation consists predominately of Himalayan blackberry and Indian plum. The substrate is a sandy loam soil with deposition of fine sand from Gilliam Creek flooding events. Soils in the wetland are a very dark gray (1OYR 3/1) sandy loam over a dark grayish brown (2.5Y 4/2) sandy gravelly loam with redoximorphic features. Adjacent soil in the upland is a very dark -grayish brown (10YR 3/2) loam without mottles over an olive -brown (2.5Y 4/3) sandy gravelly loam with mottles. Wetland GC -1 was delineated based on the presence of hydrology, hydric soils, and hydrophytic vegetation. Data sheets GCI U-1 and GC1 W-1 describe data collected in this wetland and associated upland and can be found in Appendix B. 3.2.1.3 Wetlands GC -2 and GC -4 Classification: Shrub TMC Type 3 Wetland Buffer: 50 feet Wetland GC -2 is 0.06 acres (2,701 square feet) in size and is located on the right bank of the Gilliam Creek North Tributary downstream from the confluence of the tributary with an outfall from a small stormwater detention facility west of the ravine. This slope wetland has a riverine component along the vegetated stream bench and is hydrologically connected to the tributary. Wetland GC -4 is a small (60 square feet) depression between Wetland GC -2 and GC -5. It is very similar to the slope portions of Wetland GC -2 in terms of hydrology, plants, and soils. 3-4 October 2006 I 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Wetland hydrology results from a seasonally high water table along the north facing slope of the ravine and over bank and hyporheic flow within the bench portion of the wetland. Soils saturated and free water were observed to the surface on the slope, and on the stream bench the soil was saturated to six inches and free water was observed at 12 inches during the field investigation. Vegetation in the wetlands is comprised predominately of Himalayan blackberry, salmonberry, red alder, stinging nettles (Urtica dioica), and nightshade (Solanum dulcamara). The community met the criterion for hydrophytic vegetation because more than 50 percent of the dominant species were wetland plant species. Surrounding upland vegetation was predominately Himalayan blackberry. Soils in the slope wetland are predominately very dark gray (10YR 3/1) mottled loam over a very dark gray loam without redoximorphic features. The riverine portion is predominately a very dark grayish brown (10YR 3/2) over reduced sand in the hyporheic zone of the channel. Adjacent upland soil in the upland is a very dark grayish -brown loam without mottles over a mottled brown (10YR 4/3) loam. Wetlands GC -2 and GC -4 was delineated based on the presence of hydrology, hydric soils, and hydrophytic vegetation. Data sheets GC2 W-1, GC2 W-2, and GC2/5 U-1 describe data collected in this wetland and associated upland and can be found in Appendix B. 3.2.1.4 Wetlands GC -3 and GC -6 Classification: Shrub TMC Type 3 Wetland (unregulated per TMC 18.45.080B) Buffer: 0 feet Wetlands GC -3 and GC -6 are 0.02 and 0.01 acre (767 and 371 square feet) in size. (respectively) and each is located on a stream bench adjacent to the Gilliam Creek North Tributary. These riverine wetlands are hydrologically connected to the channel and similar enough in characteristics to be described together. Wetland hydrology results from subsurface flows associated with the stream hydrology. Soils were saturated and free water was observed to the surface on the stream bench during the field investigation. Vegetation in the wetlands is predominately Himalayan blackberry, salmonberry, stinging nettles and nightshade. The community met the criterion for hydrophytic vegetation because more than 50 percent of the dominant species are wetland plant species. Surrounding upland vegetation consisted predominately of Himalayan blackberry. Surrounding upland vegetation of Wetland GC -6 consisted of big -leaf maple in the overstory with Indian plum and salmonberry in the understory. Soils in the wetland ranged from very dark grayish brown (10YR 3/2) mottled loam over a very dark gray (10YR 3/1) loam to a dark grayish brown (10YR 4/2) loam over mottled dark grayish brown loam. The upland data plot associate with Wetland GC -3 was established on the stream bench in a similar geomorphic location as Wetland GC -3, however in a location further downstream where the channel in more deeply incised. This deeper incision has resulted in the predominant source of hydrology being disconnected from the active rooting zone of the stream bench. Although dominated by a hydrophytic community (stinging nettles, night shade, and salmonberry), the area lacks wetland hydrology (saturation at 14 inches) and lacks hydric soil (brown (10YR 4/3) at 10 inches). October 2006 I 553-2535-004 (02) 3-5 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Wetlands GC -3 and GC -6 were delineated based on the presence of hydrology, hydric soils, and hydrophytic vegetation. Data sheets GC3 W-1, GC6 W-1, GC6 U-1, and GC3 U-1 describe data collected in this wetland area and associated upland and can be found in Appendix B. 3.2.1.5 Wetland GC -5 Classification: Shrub TMC Type 3 Wetland Buffer: 50 feet Wetland GC -5 is 0.04 acre (1,889 square feet) in size and located in the western portion of the ravine, westof the right bank of Gilliam Creek North Tributary. This slope wetland is directly connected with the North Tributary. The hydrology of Wetland GC -1 is predominantly supported by a surface expression of regional groundwater. The water table in the wetland was at or near the surface during field investigation. Vegetation in the wetland is composed of lady fern, creeping buttercup (Ranunculus repens), and Himalayan blackberry. The criterion for hydrophytic vegetation was met because greater than 50 percent of the dominant species were wetland plant species. Surrounding upland vegetation consists predominately of Himalayan blackberry. Soil in the wetland consists of a mottled very dark gray (10YR 3/1) loam over a mottled grayish brown (10YR 5/2), all with redoximorphic features. Adjacent upland soil is a very dark grayish -brown loam without redoximorphic features over a mottled brown (10YR 4/3) loam with redoximorphic features. Wetland GC -5 was delineated based on the presence of hydrology, hydric soils, and hydrophytic vegetation. Data sheets GC5 W-1 and GC2/5 U-1 describe data collected in this wetland and associated upland and can be found in Appendix B. 3.2.1.6 Wetlands GP -1 and GP -2 Classification: Shrub TMC Type 3 Wetland (unregulated per TMC 18.45.080B) Buffer: 0 feet Wetlands GP -1 and GP -2 are located north and east of the Gilliam Creek ravine. These two scrub -shrub wetlands are 153 square feet and 248 square feet in size and are located in topographic depressions. Red osier dogwood (Cornus sericea), Himalayan blackberry, and salmonberry are dominant in the shrub stratum with bindweed and nightshade present in the herbaceous layer. The criterion for hydrophytic vegetation was met because greater than 50 percent of the dominant species were wetland plant species. Soil in Wetland GP -1 consists of loam that ranged in color from very dark brown (10YR 2/2) with no mottles to a weak red (2.5YR 4/2) loam with dark yellowish brown (10YR 4/4) redoximorphic features. Soil in wetland GP -2 consists of very dark brown (10YR 2/2) loam in the upper nine inches and a dark grayish brown (10YR 4/2) loam with brown (10YR 5/3) redoximorphic features. Adjacent upland soil consists of a very dark grayish -brown (10YR 3/3) loam without mottles. Wetland hydrology is supported by ground and surface water. Evidence of water marks indicate that prolonged and repeated inundation occurs within both of these wetlands. 3-6 October 2006 I 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Wetlands GP -1 and GP -2 were delineated based on the presence of hydrology, hydric soils, and hydrophytic vegetation. Data sheets Gpipe 1-W, Gpipe 2-W, and Gpipe 1-U contain the data collected in this wetland and associated uplands. These data sheets can be found in Appendix B. 3.2.1.7 Wetlands GP -3 Classification: Emergent TMC Type 3 Wetland (unregulated per TMC 18.45.080B) Buffer: 0 feet Wetland GP -3 is located north and east of the Gilliam Creek ravine, near an existing maintenance roadway. This 166 square foot wetland contains emergent vegetation including lady fern, bindweed, and nightshade. Soils within the wetland are dark grayish brown (10YR 4/2) clay loam with gray (10YR 5/1) and brown (10YR 5/3) redoximorphic features. Similar to Wetlands GP -1 and GP -2, watermarks within the wetland indicate that ponded water is likely present within the wetland during a portion of the year. The presence of redoximorphic features indicates that wetland hydrology is present during the growing season. Wetland GP -3 was delineated based on the presence of hydrology, hydric soils, and hydrophytic vegetation. Data sheets Gpipe 3-W and Gpipe 1-U contain the data collected in this wetland and associated uplands. These data sheets can be found in Appendix B. 3.2.2 Wetland Functions Wetland functions on the site were rated with a high, medium, or low assessment based on best professional judgment. The wetlands within the project area generally provide limited hydrological and biological functions (Table 3-2) which is primarily due to their limited size/interconnectedness and vegetative structure (limited species richness and stratum). 3.2.2.1 Hydrological Functions Project area wetlands are rated low to moderate for hydrological functions such as biofiltration, groundwater recharge, and floodwater storage. These wetlands are typically located on a steep slope, which does not support stormwater detention. However, the wetlands do support a dense but relatively homogenous herbaceous community, which increases overall biofiltration capacity and contributes to water quality improvement. 3.2.2.2 Biological Support and Habitat Functions Overall, wetland habitat function for all wetlands is low in the study area due to very low species and structural diversity. The ability of the project area wetlands to provide wildlife habitat function is compromised by ongoing human perturbations resulting in limited vegetation diversity and food for wildlife. 3.2.2.3 Cultural and Socioeconomic Functions The wetlands identified within the study area provide very. little educational or recreational opportunities because they are either in close proximity to a major roadway, within a historically disturbed ravine, or located on private property that is dominated by Himalayan blackberry. These wetlands also provide very little aesthetic value, but do provide some connection to open space areas. For these reasons, the wetlands in the project area merit a low rating for cultural and socioeconomic values. October 2006 1553-2535-004 (02) 3-7 Wetland and Stream Delineation and Conceptual Mitigation Plan P S Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Table 3-2. Summary of Wetland Functions for the Southcenter Boulevard Project 3-8 October 20061 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila. Washington Sound Transit The western segment of the daylighted portion of the Northwest tributary in the project area is located on the north side of Southcenter Blvd, south of a storage facility and paved area (see Figure 1-2). The tributary flows from a piped storm drain system and enters a constructed stormwater swale. This swale is surrounded by a chain-link fence, rip rap, blackberry shrubs, and a few red alder trees. The stream empties into the swale through a 36 - inch pipe from the north then flows eastward in an open channel for approximately 20 feet then flows into an 18 -inch pipe. During periods of high water flow, water will back up into the western 40 feet the swale. The stream bottom is composed of rip rap with sands, gravels, and fine sediment. The stream is piped through the 18 -inch culvert along the north side of Southcenter Boulevard for approximately 250 feet to the east. The stream is then piped under Southcenter Boulevard and daylights on the south side of the roadway. The creek flows through an open channel for approximately 50 feet and is then piped again under a residential development with a swimming pool. The stream channel contains gravels and sands with limited buffer vegetation. The banks are vegetated with grass and two clusters of multi -stemmed red alder trees. Fish habitat is not likely to be present in this segment of the stream. 3.2.3.2 Gilliam Creek Gilliam Creek drains east through the project area, paralleling the north shoulder of SR 518 (see Figure 1-2). The creek flows under 42"d Ave S then under the road prism of Southcenter Boulevard. The creek flows through a ravine then converges with the North Tributary of Gilliam Creek. At this point, the creek is then piped approximately 1,300 to the east under residential developments and daylights on the south side of Southcenter Boulevard for approximately 900 feet. The creek is then placed in another culvert under Southcenter Boulevard and flows off site to the north. In the project area the creek habitat consists of gravels and some sands with a forested and shrub riparian corridor. According to TMC 18.45.100 this stream segment would likely be classified as a Type 3 watercourse requiring an 80 -foot buffer. 3.2.3.3 North Tributary The North Tributary of Gilliam Creek starts near the intersection of SR -99 and S 144th Street and originates on the west side of S. 148th St. It is culverted under 42thl Ave S., S. 151' St, and S. 150th St. The tributary flows through a narrow ravine and then connects to the mainstem of Gilliam Creek (see Figure 1-2). The channel in the project area mainly consists of sands and some gravel and the banks are deeply incised. Buffer vegetation in the northern portion of the ravine contains native shrubs and trees and contains more non-native invasive species as the creek flows toward the east. According to TMC 18.45.100 this stream segment would likely be classified as a Type 3 watercourse requiring an 80 -foot buffer. 3.2.3.4 Unnamed Tributary This tributary originates under 40'h Ave. S. (see Figure 1-2). Within the project area, this tributary flows in a shallow swale along the edge of Southcenter Boulevard and though residential property. The buffer consists of mowed lawn on the south side and Himalayan blackberry and red alder on the north side (adjacent to Southcenter Blvd). According to TMC stream segment would likely be classified as a Type 3 watercourse requiring a October 2006 1553-2535-004 (02) 3-9 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 3.3 THREATENED, ENDANGERED, AND SENSITIVE SPECIES Bald eagle (Haliaeetus leucocephalus) is one federally listed threatened species identified as potentially occurring within the project area. (WDFW 2002; USFWS 2002). Bull trout (Salvelinus confluentus) and Chinook salmon (Oncorhynchus tshawytscha) may be present in the Green-Duwamish River outside the project. Bald eagles are known to winter and roost along the Green-Duwamish River, but there are no known winter concentration areas for eagles within at least 1.5 miles of the project area. Potential bald eagle perching habitat occurs in large trees along the Green-Duwamish River. The main perching area is more than 0.5 mile from the planned Southcenter Boulevard expansion so project effects on wintering bald eagles would be minimal (Sound Transit 1999b). There are no endangered species in immediate project area. Sound Transit completed the Endangered Species Act (ESA) Section 7 process and received concurrence in spring 2000 from the federal services regarding effects on federally listed species on the link light rail route. NOAA Fisheries and USFWS concurred with a determination of "may affect, not likely to adversely affect. ,, 3-10 October 2006 1553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 4. IMPACTS The Southcenter Boulevard project will result in temporary and permanent impacts to wetlands, streams, and their buffers (Figures 4-1 through 4-4). Temporary impacts will generally last for approximately six months and include clearing, grading, and vegetation removal outside of the project footprint. Other temporary impacts may include an increase in turbidity during work below the ordinary high water mark. These impacts are expected to be short in duration, and typically lasts on the order of about one hour. Other temporary impacts may include an increase in noise disturbance during construction activities. Permanent impacts will include placing energy dispersing rocks, extending culverts, placing fill in wetlands and stream buffers, and removing vegetation. Impacts are summarized below, and additional detailed information is provided in Tukwila Freeway Route Link Light Rail Sensitive Areas Study Wetlands and Streams (Parametrix 2004). Refer to the sections below for descriptions and Tables 4-1, 4-2, and 4-3 for a summary of the impacts. 4.1.1 Wetland Impacts 4.1.1.1 Temporary Impacts There will be a total of 0.003 acre (110 square feet) of temporary impacts to wetlands from this project. Temporary impacts to Wetland GC -5 will occur during installation of a security fence surrounding the Gilliam Creek ravine (Table 4-1 and Figure 4-3). Approximately 110 - square -foot area of wetland vegetation will be removed. These impacts will be temporary as the existing vegetation (Himalayan blackberry and salmonberry) are expected to re -grow after the fence has been installed. The purpose of the fence is to prevent people entering the area during periods of high water levels and to also deter people from dumping materials into the wetlands, stream, and buffer areas. The fence must cross the wetland because it follows a property boundary line. 4.1.1.2 Permanent Impacts There will be a total of 0.004 acre (166 square feet) of permanent impact to wetlands from this project. Construction of a new access/maintenance roadway at the northeast portion of the Gilliam Creek ravine will permanently fill all of Wetland GP -3 (Table 4-2 and Figure 4- 3). Impacts from this activity will include removing emergent vegetation and reducing the amount of stormwater control and water quality functions available in this small wetland. Due to the small size of the wetland it currently provides limited hydrologic, chemical, and biologic functions. October 2006 1553-2535-004 (02) 4-1 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Table 4-1. Temporary and Permanent Wetland Impacts Wetland/Stream Temporary Wetland GC -5 4 Permanent Impact Impact Area Area (Sq. (Acres) Feet) Description of Impact Temporary Impact: Installing a security fence across the wetland. No permanent fill material will be 0.002 110 placed in this wetland. Permanent Impact: Filling all of Wetland GP -3 to accommodate the access/maintenance roadway. This road will serve the outlet structure in the Gilliam Wetland GP -3 0.004 166 Creek ravine. TOTAL 0.006 1 276 4-2 October 20061 553-2535-004 (02) • 3 • 4 5 0 0 0 o _ e.. ... . L, ......... ,-- • - . STORMWATER SWALE di TO BE FILLED AND STREAM SEGMENT TO,/ ' I ' AREA TO BE REPLANTED _ •._ - st-; BE 1.? • --- < _ _ _ LLE/: • PWA5' • • • • ' • f_ t-, • .......mrnmiwAmmr.,WW!F.A!WG,MUWWASIIIAMWAIIMPAMMIAMMIAmn... • F _ 36"50 NEW STREAM/STORMWATER LINE TO BE PIPED EXIST PIPED STORMWATER LINE TO BE REMOVED / i ,,„.•••• 7 4 , SO EXIST SIDEWALK TL— . R40\25+000 ....... +00 . 17417 24+DO. • I 2“SD C.4 1 § '- • ct 4 f EX CURB R40 26+00 R40 29+00 AND EXTENSION - 1- ----------- 1 x priel ipAD OMH 1. 2.98,6? FLOW OOP CON PAD — v ; — — — GILLIAM CREEK1 NORTHWEST TRIBUTARY IMPACT LEGEND: PERMANENT STREAM IMPACTS GILLIAM CREEK NORTHWEST TRIBUTARY STORMWATER POND IMPACT (TOTAL=583 SF) GILLIAM CREEK NORTHWEST TRIBUTARY IMPACT (TOTAL=214 SF) TEMPORARY IMPACTS 0 )00 00 C 0 0 0 )000 00 C PERMANENT BUFFER IMPACTS TEMPORARY BUFFER IMPACTS FROM SOUTHCENTER BLVD PROJECT (TOTAL=750 SF) IMPACTS FROM SOUTHCENTER BLVD PROJECT (TOTAL=4,782 SF) LEGEND: SF HVF • 1-- E GILLIAM CREEK MAINSTEM GILLIAM CREEK NORTHWEST TRIBUTARY GILLIAM CREEK NORTH TRIBUTARY GILLIAM CREEK UNNAMED TRIBUTARY PIPED SEGMENT OF CREEK (APPROX) SILT FENCE HIGH VISIBILITY FENCE 41' . ; I • • hr.% '‘• q•• ... „J. „•• ' \ F•3', . r ' . • , 1 • ••• _ . SIDEWALK WETLAND/STREAM BUFFER 20 10 0 20 40 SCALE IN FEET Designed By. Drown By o N Checked By: 0 6 — No. Dote Dan. Chk. App. Revisions Approved By: Scole: I "=20' Filename: 359_F I G_4-1.DWG Contract No.: C 759 Submitted: Dote: Approved: Date: Date: 10/03/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD IMPROVEMENTS GILLIAM CREEK NORTHWEST TRIBUTARY STREAM AND BUFFER LOCATION AND IMPACT AREA Drowing No.: F I CURE 4-1 Sheet No.: Rev.: 2 • 3 • 4 • 2 0 0 0c1 3 0 NN vi / / / / /' / / / / / // /// /I •/ ,. -- / /7/ / / / / / 1 / / // /I / / r /, / / , i j„, / ',I 5 -- - b „ .• , -,17-i,/ ,<" "....-4.,_ • -' i ; // / • • • / • 1,- 1, /I te . •.:',2-- /,' \-,, ../ /: / I •••i• ; - 1: / /1 - - t),.;?-:: iii ',--- 24"S 0 +00 4,00. 4.-4dretramprArArmArorminor .•. sF sF sr SF SF sF IMPACT LEGEND: PERMANENT STREAM IMPACTS / UNNAMED TRIBUTARY • TO GILLIAM CREEK QUARRY SPALL PADS • '• /// / / / I GILLIAM CREEK UNNAMED TRIBUTARY IMPACT (TOTAL=100 SF) TEMPORARY IMPACTS 0 0 0 D0 00 00 C DO 0 C 0 0 0 PERMANENT BUFFER IMPACTS TEMPORARY BUFFER I MPACTS FROM SOUTHCENTER BLVD PROJECT (TOTAL=2,I40 SF) IMPACTS FROM SOUTHCENTER BLVD PROJECT (TOTAL=2,045 SF) / / / ,,1/ LEGEND: SF KW— • / G LL I AM CREEK MAINSTEM GILLIAM CREEK NORTHWEST TRIBUTARY GILLIAM CREEK NORTH TRIBUTARY GILLIAM CREEK UNNAMED TRIBUTARY PIPED SEGMENT OF CREEK (APPROX) SILT FENCE HIGH VISIBILITY FENCE 20 10 0 20 40 SCALE 1 N FEET Designed By Drawn By Checked By. — No. Dote Dsn. Chk. App. Revisions Approved By Scale: 1"=201 Filename: S59_WS1_4-2.DWG Contract No.: C 759 Submitted: Date: Approved: Dote: Dote: 10/03/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD IMPROVEMENTS GILLIAM CREEK UNNAMED TRIBUTARY STREAM AND BUFFER LOCATION AND IMPACT AREA Drawing No.: FIGURE 4-2 Sheet No.: Rev.: 2 N 80' NW I/4 SE %4 SEC 22, T 23 N, .R 4 E; W.M. WETLAND/STREAM BUFFER 1 TEMPORARY BUFFER IMPACTS FROM SECURITY FENCE INSTALL.TION WETLAND GC -6 TEMPORARY WETLAND IMPACT FROM SECURITY FENCE INSTALLATION (TOTAL=II0 SF) GILLIAM CREEK NORTH TRIBUTARY WETLAN GC -3 GILLIAM CREEK NORTH TRIBUTARY 0 0 x 0 0 (x' • 0 / . : S 52ND ST • WETLAND GC -5 WETLAND/STREAM BUFFER 85' 7EX 1 ST 'MH ' TO REMAIN WETLAND GP -3 C; (TOTAL= 166 SF) 0 0 0 U OO U 0 NMI 0 0 1) WETLAND GP- I U WTLAND GP -2 Y 0 1 LEGEND x • FCS EXTREME POND ELEV = 189.0 POND OVERFLOW ELEV = 186.0 6'-0" CHAIN LINK FENCE, TYPE 6 FLOW CONTROL STRUCTURE WETLAND/STREAM BUFFER I MPACT LEGEND: G J PERMANENT STREAM AND WETLAND IMPACTS mo NEW 36" STORM DRAIN EXIST 24" -- - - STORM DRA IN WETLAND —SF— SILT FENCE —HVF— U` GILLIAM CREEK IMPACT (TOTAL=52 SF) WETLAND GP -3 IMPACT (TOTAL= 166 SF) TEMPORARY IMPACTS TEMPORARY BUFFER IMPACTS (TOTAL=15,565 SF) TENNANCg_ROAD HIGH VISIBILITY FENCE BYPASS PUMP SAND BAG CHECK DAM TEMPORARY STREAM & WETLAND IMPACTS (TOTAL= .096 SF) - PERMANENT BUFFER IMPACTS WETLAND GC -4 • WETLAND GC -2 GILLIAM CREEK EXIST 36" SD WETLAND GC -I I I' R40 41+00 - V \ . EX CURB 'I IMPACTS FROM SOUTHCENTER BLVD PROJECT (TOTAL=4,914 SF) S CLF ••� ; WETLAND GP -3 1_ o NEW 96" Sr OUTFALL STRUCTURE EXIST MH TO REMAIN -R40`50+00 \O \ 0 1 0 C�� �_ am\ c'. „/ • CURB S IOEWALK L0 , 0 `' O G 0p •--U=tllSlA li v00/oihro urz=idII. I g[t40-96+ 0005' 09� -4-00 y'� 7� ' - N`v x 5 • GILLIAM CREEK MAINSTREAM SR- 518 �- LIGHT RAIL ALIGNMENT EXIST 36” SD PROPOSED• ACCESS/ MAINTENANCE ROAD • 40 80 SCALE 1N FEET 20 10 0 20 40 SCALE IN FEET N Designed By. Drown By on ti o Checked By. No. Dote Dsn. Chk. App. Revisions Approved By: Scale: AS SHOWN Filename: S59_WS I _2.dwg Contract No.: C 759 Submitted: Date: Approved: Dote: Date: 10/03/06 LINK L 1 GHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD IMPROVEMENTS GILLIAM CREEK WETLAND, STREAM, AND BUFFER LOCATION AND IMPACT AREA Drawing No.: FIGURE 4-3 Sheet No.: Rev.: 1Rosoived lf 559U 7' S.5.5_L57_,CA 55.5._157_RP S5.5_157_SP S55_1_57_LC 2 • 3 • 4 • NEW PROPOSED MEDIAN-- ,SPEE LIM,T —us —- P4.fl WETLAND/STREAM BUFFO -- * -NEW RETAINING WALL LINK LIGHT RAIL GUIDEWAY \ EXISTING EDGE OF 4VEM4IT t t t 'et* • • • • • 't . • * -24"SD (OT') , 1 lks icc EP . . '," .... ...... SOUTHCENTER BL VD 1• .......... • • P4.0 74 rxt SS,Pi SIDEWALK • " IP 11 I , I•/ ____---- i------ — • / r — 4 - P40 54 -nn / 24 D c•P Pan 1R-1-01 H.91.10 S/ai BACK OF CURB EXISTING EDGE OF PAVEMENT OrOrO EXISTING EDGE OF PAVEMENT BACK OF CURB R40 /0+00 R40100 - NEW RETAINING WALL — — — BACK OF CURB PROPOSED STORM --• DRAIN (TIES INTO EXISTING 48. SD) /' • • • .................................. • • • I MPACT LEGEND: PERMANENT BUFFER IMPACTS G I LL I AM CREEK OHWM IMPACTS FROM SOUTHCENTER BLVD PROJECT (TOTAL=4,630 SF) TEMPORARY IMPACTS 0 0 ,00;c 0 00 00 C ) C 0 0 0 TEMPORARY BUFFER IMPACTS FROM SOUTHCENTER BLVD PROJECT (TOTAL=3,688 SF) WETLAND • ................. ... LEGEND: — • — • — • — GILLIAM CREEK MAINSTEM GILLIAM CREEK NORTHWEST TRIBUTARY - • • — • • — • • - GILLIAM CREEK NORTH TRIBUTARY GILLIAM CREEK UNNAMED TRIBUTARY PIPED SEGMENT OF CREEK (APPROX) SILT FENCE HVF— HIGH VISIBILITY FENCE SF— WETLAND/STREAM BUFFER 20 10 0 20 40 SCALE IN FEET Designed By Drown By. No. Dote Dan. Chk. App. Revisions Checked By Approved By. Scale: I "••=20' Filename: S59_WS I _I .DWG Con tract No.: C 759 Submitted: Dote: Approved: Date: Date: 10/03/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD I MPROVMENTS GILLIAM CREEK STREAM AND BUFFER LOCAT I ON AND I MPACT AREA Drawing No.: FIGURE 4-4 Sheet No.: Rev.: Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 4.1.2 Stream Impacts The following section describes the four different locations within the project corridor where impacts to steams will occur. Table 4-2 provides a summary of temporary and permanent impacts to streams as a result of this project. Table 4-2. Temporary and Permanent Impacts to Streams Water Gilliam Creek in the ravine NW Tributary of Gilliam Creek (stormwater facility) NW Tributary of Gilliam Creek at 37 Place S. Unnamed Tributary of Gilliam Creek at 40th Ave. S. Gilliam Creek within the ravine TOTAL Fill Area (Acres) Fill Area (Sq. Feet) Temporary Description of Impact During the stream by-pass and dewatering activities the stream will have sandbags, sump pumps, and foot traffic within the stream channel. Physical disturbance to the stream bed and banks may occur as a 0.023 986 result of these activities. Permanent 0.013 583 0.005 214 0.002 100 Piping the portion of the tributary that flows through an existing un -maintained stormwater swale Extending culvert and placing energy dispersing rock in the stream. Placing energy dispersing rock in and along the banks of the tributary in two locations Extending culvert and placing energy 0.001 52 dispersing rock in the stream. 0.02 949 4.1.2.1 Temporary Gilliam Creek Ravine and Northwest Tributary There will be a total of 0.023 acre (986 square feet) of temporary impacts to Gilliam Creek during construction of the 96 -inch outfall and slotted weir outfall structures. The stream will be "by-passed" around the work area and will require installing diversion dams and sump pumps within the creek channel (Table 4-2 and Figure 4-3). Impacts may include a temporary increase in turbidity, erosion, sedimentation, and disturbance to the channel substrate and stream banks. Similar type of temporary stream impacts will also occur to the Northwest Tributary during the culvert extension work. 4.1.2.2 Permanent Northwest Tributary Two areas along the Northwest tributary will be affected by the project. The first area is located just east of SR 99 (see Figure 4-1). Stormwater improvements within Southcenter Boulevard will require filling the existing stormwater swale and piping approximately 20 feet of the Northwest Tributary of Gilliam Creek and about 40 feet of a backwater area during high flow periods. This area will be filled with soil and replanted with landscape plants and grass. The area was previously filled, channelized, and surrounded with rip rap. Piping about 20 feet of the channel will result in a minimal loss of wildlife habitat and a minor decrease in organic input to downstream habitat. Due to its existing highly disturbed condition the loss of function is not expected to be significant. October 2006 I 553-2535-004 (02) 4-11 Welland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit The second area is located about 300 feet east of the first impact area, on the south side of Southcenter Boulevard (see Figure 4-1). Widening Southcenter Boulevard will require extending a culvert on the Northwest Tributary of Gilliam Creek. The existing stream empties out of a culvert into a landscaped portion of the stream between Southcenter Boulevard and an apartment complex. The stream contains a rip rapped bed and bank. The riparian area is composed of a manicured mowed grass lawn and a cement footbridge. The culvert is proposed to be extended approximately 10 feet resulting in an impact of 0.005 acre (214 square feet) of streambed (Table 4-2 and Figure 4-1). The overall impact to stream habitat and biotic functions in these two areas are limited. The segment of the stream that will be piped and that currently flows through the stormwater feature provides limited functions. The section of stream that will be piped to accommodate the roadway is comprised of a shallow riffle through an armored bed of angular rock and gravel. It does not contain habitat attributes that would be beneficial to fish (e.g. pools, or over hanging banks). The armored bed would provide habitat for aquatic invertebrates, however this would be limited due to periods of limited or no flow, and periods of relatively high flow resulting from the dynamic nature of urban stormwater in a watershed with limited stormwater management. Unnamed Tributark About 0.002 acre (100 square feet) of rip rap and quarry spalls will permanently affect the unnamed Tributary to Gilliam Creek. The material will be placed in the edge of the tributary at two locations (Figure 4-2). The purpose of this action is to provide bank protection and energy dissipation for two new stormwater outfalls located along the edge of the tributary. This stream segment is highly altered and flows through a roadside area and within a maintained lawn. This tributary does not provide fish habitat but the adjacent riparian vegetation (blackberry and red alder) likely provides some limited organic matter output to downstream areas. Installation of the outfall protection would not likely result in significant alterations to how this system functions. Gilliam Creek Ravine Approximately 0.001 acre (52 square feet) of Gilliam Creek will be permanently filled to accommodate the new 96 -inch control structure and slotted weir. As a result of installing the new outfall, the ravine will flood to a higher elevation and the total area of stream that is currently flooded and propose to be flooded will be relatively the same. The current hydrologic and hydraulic conditions of the stream is influenced by repeated flooding, resulting in episodic deposition of fine material followed by scour as the channel volume decreases. As a result, habitat available for fish in the stream channel is currently limited. Construction of this project would not preclude possible future restoration of the channel. Limiting factors for improved channel habitat includes the residential developments and existing state highways, I-405 and I-5 located downstream. The habitat is also inaccessible due to the length of underground piping that the stream passes through. The streambed in the area where the proposed energy dispersal rock will be placed is currently composed of angular riprap rock (mean diameter of about 6 inches+) and gravel. The bed near the proposed culvert extension is predominately sand. Due to the current dynamic nature of the stream hydrology, it is assumed the proposed construction will not further impact stream function in the ravine. The frequency, magnitude, and duration of these flooding events are also beyond the adaptive range of most invertebrates found in the Pacific Northwest (Karr and Chu 1999). Therefore the invertebrate assemblages in the channel are likely similar to other limited urban streams in the area (e.g. Miller Creek, Des Moines Creek, and Thornton Creek) (Kleindl 1995). 4-12 October 20061 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 4.1.3 Buffer Impacts Buffer impact areas for both stream and wetland areas have been combined and are discussed below. A total of 0.51 acre (22,143 square feet) of wetland and stream buffer will be temporarily disturbed during construction activities (Table 4-3). A total of 0.38 acre (16,371 square feet) of wetland and stream buffer will be permanently lost as a result of widening Southcenter Boulevard, installing water quality ponds, constructing retaining walls, and installing new access/maintenance road. The sections below include more detailed descriptions of the proposed impacts to buffers. Table 4-3. Temporary and Permanent Buffer Impacts Location Temporary Buffer Impacts Permanent Buffer Impacts Acres Square Feet Acres Square Feet Northwest Tributary of ' Gilliam Creek 0.02 750 0.11 4,782 Unnamed Tributary Gilliam Creek 0.05 2,140 0.05 2,045 Gilliam Creek in the ravine 0.36 15,565 0.11 4,914 Gilliam Creek at 51St Ave S/ Wetland 119 0.08 3,688 0.11 4,630 Total 0.51 22,143 0.38 16,371 4.1.3.1 Temporary Northwest Tributary Buffer Impacts A total of.0.02 acre (750 square feet) of lawn and grassy roadway shoulder surrounding the Northwest Tributary of Gilliam Creek will be temporarily disturbed during road widening operations (see Figure 4-1). Unnamed Tributary Gilliam Creek About 0.05 acre (2,140 square feet) of buffer will be temporarily disturbed during road widening and stormwater improvement activities (see Figure 4-2). Gilliam Creek Ravine Temporary buffer impacts within the ravine will total 0.36 acre (15,565 square feet) (see Figure 4-3). These temporary impacts will mainly occur during road widening activities, installation of the access/maintenance road, and during the installation of the security fence surrounding the ravine. Gilliam Creek at 51" Ave S. /Wetland 119 Buffer Impacts About 0.08 acre (3,688 square feet) of buffer will be temporarily affected during construction of the roadway (see Figure 4-4). Impacts will include loss of some native upland vegetation including big -leaf maple, swordfern, and snowberry. 4.1.3.2 Permanent Northwest Tributary Buffer Impacts Permanent impacts associated with filling the stormwater swale, extending the sidewalks, and extending the culverts will result in the loss of 0.11 acre (4,782 square feet) buffer associated October 2006 I 553-2535-004 (02) 4-13 Weiland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit with the Northwest Tributary of Gilliam Creek (see Figure 4-1). Vegetation surrounding the stormwater swale includes Himalayan blackberry and deadly nightshade and will be replaced with maintained lawn and landscaped areas. The buffer area on the south side of Southcenter Boulevard, west of the private driveway, and north of the swimming pool consists of a maintained lawn area with two clusters of red alder trees and offers very limited buffer function due to its limited vegetation diversity, compacted soils, and proximity to the road, foot traffic, and its constrains by roads, driveways, and buildings. Unnamed Tributary Gilliam Creek A total of 0.05 acre (2,047 square feet) of buffer will be permanently lost to accommodate the new road, sidewalks, and stormwater outfalls (see Figure 4-2). The existing buffer are along this tributary includes Himalayan blackberry, a few red alder trees, roadside shoulder, and steep grassy banks. Filling this area will result in the loss of some small mammal and bird habitat. Gilliam Creek Ravine Permanent impacts to the buffer areas will result in about 0.11 acre (4,914 square feet) of buffer loss (see Figure 4-3). Widening the road will require placing retaining walls and expanding the road about 10 -feet on the north and south sides of Southcenter Boulevard. Approximately nine big -leaf maples and three red alders may be removed by the expansion of the roadway to the north and a few small diameter big leaf maples may be lost on the south side of the road. All road construction work in this location will occur from the existing roadside. Additionally a new water quality pond will be located at the southeast side of the ravine area. This area has already been historically disturbed and consists of blackberry species, Scot's broom (Cytisus scoparius), and grasses. Gilliam Creek at SIS` Ave S. /Wetland 119 Buffer Impacts About 0.11 acre (4,630 square feet) of buffer will be permanently lost during construction of the roadway and retaining walls (see Figure 4-4). In this location, the existing buffer consists of a compacted gravel portion adjacent to the pavement edge and a riprapped slope down into the shallow ravine containing Gilliam Creek and Wetland 119. The area of the proposed impact portion offers limited buffer function due to its limited vegetation diversity, compacted soils, and proximity to the road. 4-14 October 20061 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 5. MITIGATION This section describes the mitigation sequence, including proposed compensatory mitigation for unavoidable impacts to wetlands. Federal, state, and local regulatory agencies require that mitigation efforts follow this prescribed sequence: a. Avoiding the impacts altogether by not taking a certain action or parts of an action, b. Minimizing impacts by limiting the degree or magnitude of the action and its implementation, by using appropriate technology, or by taking affirmative steps to avoid or reduce impacts, c. Rectifying the impact by repairing, rehabilitating, or restoring the affected environment, d. Reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action, e. Compensating for the impact by replacing, enhancing, or providing substitute resources or environments, or f. Monitoring the impact and taking appropriate corrective measures. 5.1 AVOIDANCE AND MINIMIZATION Sensitive area impacts were avoided by including retaining walls into the design adjacent to stream and wetland buffer areas. Retaining walls avoid putting more fill material in the buffer area and also limit the amount of temporary disturbance that could occur to sensitive areas. Although complete avoidance of project impacts is not possible, the project incorporates Best Management Practices (BMPs) that are consistent with the mitigation sequence. These include providing water quality treatment to prevent water quality degradation over time. Potential short-term water quality impacts from erosion and/or spills or leaks from construction equipment will be minimized through the implementation of the project Stormwater Pollution Prevention Plan (SWPPP) and the project Temporary Erosion and Sediment Control Plan. During project construction, BMPs will be used to avoid or reduce adverse impacts to sensitive areas. BMPs have been identified in a master stormwater SWPPP approved by Ecology, Applicable BMPs will be chosen from the master SWPPP and incorporated into the contract as appropriate. These practices address clearing, grading, and stormwater management. Other BMPs will be employed during project construction to minimize the temporary impacts to critical areas. These measures include: • Using effective erosion control BMPs to prevent silt and soil from entering surface waters (including wetlands). • Hydroseeding all bare soil areas following grading. • Clearly labeling critical areas (including wetlands, streams, and buffers) on the construction plans and in the field. • Construction site access will be marked with orange barrier fencing and vehicles will be kept within the allowed area. Clearing limits will be delineated with fencing prior October 2006 1553-2535-004 (02) 5-1 Weiland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit to any ground disturbing activities and fencing will be maintained throughout construction. • The retained trees and vegetation will be protected by orange barrier fencing installed and maintained around their drip -lines. • No wet or curing concrete, including washout of equipment, will be allowed to enter any stream or wetland or any stormwater system draining to it. Containment methods will be used to isolate any runoff from activities involving wet or curing concrete activities. • Erosion control measures (such as filter -fabric fence, straw mulch, straw bales, and plastic sheeting) will be installed, maintained, and monitored for the duration of the project to prevent silt and soil from entering surface waters and wetlands. • Sediment will be removed from sediment controls once it has reached 1/3 of the exposed height of the control. Whenever straw bales are used, they will be staked and dug into the ground a minimum of 4 inches. • Sediment -laden water created by construction activity will be filtered or treated before it enters any stream or wetland. Silt fences or other detention methods will be installed as close as reasonable to culvert inlets or outlets, as applicable, to reduce the amount of sediment entering aquatic systems. • Refueling activities will be conducted within a designated refueling area at least 200 feet away from streams and wetlands. Additionally, drip pans will be fitted with absorbent pads and placed under all equipment being fueled. • Using equipment pads and storing heavy equipment away from the wetlands when not in use to minimize impacts of potential petroleum and hydraulic fluid spills. • All vehicles operating within 100 feet of any stream or water body will be inspected daily for fluid leaks before leaving the vehicle staging area. Silt fences and spill containment/control BMPs will be utilized at the staging area to ensure no sediment and material stored in the staging area will enter project streams or wetlands. Any leaks detected will be repaired before the vehicle resumes operation. • Spill control and emergency response plans will be implemented for fueling and concrete activity. • All temporary erosion, sediment, and water pollution controls will be inspected at least weekly, more frequently if necessary due to storm events of greater than 0.5 inch of precipitation in 24 hours. If inspection shows that the erosion controls are ineffective, work crews will be mobilized immediately, during working and off - hours, to make repairs, install replacements or install additional controls as necessary. • From October 1 through April 30, no soils shall remain exposed and un -worked for more than 12 hours. From May 1 to September 30, no soils shall remain exposed and un -worked for more than 7 days. The amount and duration of bare soil will be minimized by temporary or permanent seeding, sodding, mulching, plastic covering, erosion control fabrics and matting, soil application of polyacrylamide (PAM), and the early application of gravel base on areas to be paved (Herrera 2003). • Wetlands, streams, buffers and other sensitive areas will be clearly identified on the construction plans and on the ground in accordance with City of Tukwila requirements in TMC 18.45. Orange barrier fencing will be installed to protect wetlands, streams, and their buffers. 5-2 October 2006 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit • Where drilling occurs for geo-technical studies, any groundwater encountered in the course of construction will be collected, treated, and disposed of at an approved location. • In addition, the Southcenter Boulevard project will require the following BMPs to protect trees during construction: • Avoiding physical damage to tree trunk, branches, foliage and roots. • Restricting construction materials and equipment to areas outside the tree canopy. • Minimizing changes in drainage conditions around tree roots. • Minimizing impacts to soil around tree roots (TMC 18.06.070). 5.2 COMPENSATORY MITIGATION OF UNAVOIDABLE IMPACTS According to TMC 18.45.110 E "All impacts to a watercourse that degrade the functions and values of the watercourse shall be avoided. If alteration to the watercourse is unavoidable, all adverse impacts to the watercourse and its buffer resulting from a development proposal or alteration shall be mitigated in accordance with an approved mitigation plan..." Despite significant impact avoidance and minimization measures that have been implemented, some impacts to wetlands, streams and their buffers are unavoidable. Sound Transit's overall compensatory mitigation goal is to strive to exceed compliance minimums, restore the environment, and avoid environmental degradation. Sound Transit's mitigation goal for the Southcenter Boulevard Improvement project is to restore temporary impact areas to equal or better than pre project conditions and replace functions provided by habitats that are permanently lost or affected by project construction or operation. The net result of the compensatory mitigation will be an improvement in stream, wetlands, and their buffer conditions throughout the project area. A combination of mitigation within and adjacent to the project corridor is proposed. Sound Transit will provide compensatory mitigation to satisfy the City of Tukwila's requirements that restoration, enhancement, and creation achieve a no net loss of wetlands area or function (TMC 18.45.090 [D][2]) and to stream functions (TMC 18.45.110 [E]). Table 5-1 provides an overview of the compensatory mitigation for wetlands, streams, and buffers in the project corridor. October 2006 1553-2535-004(02) 5-3 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Table 5-1. Overview of Proposed Compensatory Mitigation for Impacts to Wetlands, Streams, and Buffers Sensitive Area Impacted Type of Mitigation Wetland Temporary Clear wetland vegetation to install security fence. Permanent Fill wetland to accommodate new access roadway. Temporary nstall stream by-pass system. Permanent Fill stream channel to accommodate new stormwater system, culvert extension, energy dissipation pads, new 96 -inch control structure and slotted weir. Buffer Temporary Clear buffer for construction activities. Permanent r Remove non-native vegetati• _ and enco`u i re gro ive b Relantwith native (plant species if necessary. r Enhance n . -rea along Gilliam Creek with native riparian vegetation. Stream Fill buffer for water quality ponds, new roadway, sidewalks, retaining walls, and permanent access/maintenance road. Restore area after work is completed. Reduce stream flow velocities to downstream systems. Install native riparian shrub enhancements along Gilliam Creek. Provide erosion control BMPs for new stormwater outfalls on the unnamed tributary. Restore area by regrading and planting native tree, shrub, and grasses in project right-of-way (ratio 1:1). Clear blackberries and non-native plant species and install native conifers within the buffer adjacent to the ravine (ratio 1.6:1). 5.2.1 Mitigation for Wetland Impacts Sound Transit will compensate for temporary and permanent impacts to wetlands in the project area (Table 5-2). Temporary impacts to Wetland GC -5 will occur during installation of the security fence surrounding the ravine. It is assumed that installation of the fence will be self -mitigating and would not require additional planting; however the area will be monitored and replanted if necessary (Figure 5-1). Table 5-2 provides the impact and mitigation areas for temporary and permanent impacts. Compensation for the loss of Wetland GP -3 (166 square feet) will include enhancing the riparian area adjacent to Gilliam Creek (photos of existing riparian area in Appendix A). The existing wetland is a small isolated reed-canarygrass depression. Providing native shrubs along the bank of the creek will increase the species diversity, structure, and function. 5-4 October 2006 I 553-2535-004 (02) Table 5-2. Impact and Mitigation Areas for Wetland, Stream and Buffers in the Southcenter Boulevard Improvement Project Area Stream and Wetland Buffers N m � C 0 r > a+ O cu re co to ce CE co_ as 0 a`. £ a_ m w = C a) O!'' = fn 0 4-• l0 O a0 E a F- E O O; O O 0 0 • 0 0 CO N : or O I 1.6 o CO to d'; - CO`) T M T i 01' 4 CD Oso CO r CO "N1,—' •C'i M d N O M CD CO M N N Streams and Wetlands w C O — • ti t• a = E E a Ft Sensitive Area O O CO M CO O 0 M 0 O N 0 01100 Ni '•• O O LO M 1- 0 N T CO O I Co o) T a•r1 a^ CD m 3 Cj 7 .n CO ' — - Y C w ,ti) ,` N • ca To io 0 3 3 E E @ L € L CO 0 'C C.= O .- O Cin Z Z D Wetland GC -5 CO 0) O T Areas where temporary buffer impacts occur will be restored to pre -project conditions. October 2006 I 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 5.2.2 Mitigation for Stream Impacts Sound Transit will compensate for impacts to streams by a combination of measures in the project area. The compensatory mitigation approach for the temporary disturbance to Gilliam Creek occurring during the stream by-pass and dewatering operation associated with construction of the 96 -inch control structure and slotted weir will include removing the sandbags, sump pumps, and restoring the stream banks if they have become damaged from foot traffic. If riparian vegetation is disturbed during this operation, additional native shrubs will be installed to stabilize the stream banks. Permanent impacts to Gilliam Creek mainstem and Northwest Tributary consist of placing fill in the stream channel and extending existing culverts. Mitigation for these impacts will enhancing about 3,500 square feet of th- •arian area adjacent to Gilliam Creek 1). This area within the ravine will b c easeof non-native blackberry species and rep anted with native willow and dogwood shrub s 1 improve vegetation structure and provide foraging opportunities for wildlife species. Addit' nally, the stormwater control structure itself will mitigate peak flows reaching downstream ' abitats thereby reducing the magnitude of stormwater related degradation to downstream ecostems. 5.2.3 Mitigation for Buffer Impacts Sound Transit will compensate for the temporary loss of 22,143 square feet of buffer within the project corridor. Some of the temporary impacts are due to clearing for a construction access roads, while others are resulting from the placement of a chain link fence surrounding the ravine. Temporary impacts to buffers will be restored at each impact site along the project corridor after construction is complete. Many of the areas along the roadway are currently disturbed and are either maintained lawn or areas with blackberry. Those areas that are currently maintained lawn will be returned to that condition by stabilizing the soil and hydroseeding. Impacts from installing the security fence are assumed to be self -mitigating in that the area will naturally re -vegetate. There will be 16,371 square feet of permanent wetland and stream buffer fill due to expansion of Southcenter Boulevard improvements and the construction operations within the ravine. Enhancing 27,000 square feet the degraded buffer within other portions of the ravine will mitigate permanent buffer impacts (see Figure 5-1). The ravine is currently forested, with an overstory predominately composed of red alder and big -leaf maple and an understory dominated by Himalayan blackberry along with salmonberry and Indian plum. To increase buffer functions over current conditions, the ravine will be planted with native conifer and shrub species. Planting will occur above the 189 ft high water elevation .in the ravine. Re- establishing conifer cover will increase species diversity, habitat structure, and provide shade throughout the year. 5-6 October 2006 1553-2535-004 (02) 'Resolved S55157_as S55_L57}•P S55157. -los S59_740204 559_.402SW 559_t4O2L6 559_R402W5 559– 559_WIO_ X55790 X55704 X557RX N. 0 M 0 O 0 ' tnc o a0 I N GILLIAM CREEK NORTH TRIBUTARY • • • • WETLAND GC -6 : ▪ S 52ND S1 3 0 xr x /7 0 0 0 8 WETLAND GC -3• x NW I/4 SE 1/4 SEC 22, T 23 N, R 4 E; W.M. WETLAND/STREAM BUFFER 0 • WETLAND GC -5 WETLAND/STREAM BUFFER GILLIAM CREEK NORTH TRIBUTARY C 0 0 0 0 ID O t>•. 85' x o •Csi x •t'lx 'i '-- C� • -r; 0 C 1, WETLAND GP -3 0 0 0 0 0. J 0 J 0 0 0 0 r(� 0 0 lr 0 '0 J 0 WETLAND ' GP— I ,' 0 (h 0 WETLAND GP -2 ;( U 0 I WETLAND GC -4 '•......... WETLAND GC -2 GILLIAM CREEK WETLAND GC— I EX CURB OUTRCENTER BL VD ` R40 42+00 ' R40 41+00 SIDEWALK 16 0 I 0 41 ���`• er 40 4 �iyam/ / 4C, ^. I11w1101" R40 48+0 • +00- R40. 45; 96" FLOW • STRUCTUR ** 55 - ='(t40§+06 R4O 50+00 c2 ,P' `il..r GILLIAM CREEK MAINSTREAM SR -5I8 LIG-HT RAIL ALIGNMENT -� SCALE IN FEET LEGEND x— • FCS EXTREME POND ELEV = 189.0 POND OVERFLOW ELEV = 186.0 6'-0" CHAIN LINK FENCE, TYPE 6 FLOW CONTROL STRUCTURE WETLAND/STREAM BUFFER NEW 36" STORM DRAIN EXIST 24" STORM DRAIN WETLAND —SF— SILT FENCE —HVF— HIGH VISIBILITY FENCE Jvi I T I GAT I ON LEGEND: •• • UPLAND CONIFER BUFFER ENHANCEMENT (27,000 SF) RIPARIAN ENHANCEMENT WILLOW AND DOGWOOD LIVE—STAKE PLANT I NGS (3,500 SF) No. Dote Dsn. Chk. App. Revisions Designed By. Drawn By Checked By. Approved By. Scale: AS SHOWN Filename: S59_F I G_5— I .dwg ontroct No.: C 759 Submitted: Dote: Approved: Date: Dote: 10/03/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD IMPROVEMENTS GILLIAM CREEK WETLAND, STREAM, AND BUFFER MITIGATION AREAS Drawing No.: FIGURE 5— I Sheet No.: Rev.: Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila. Washington Sound Transit 5.3 ENVIRONMENTAL GOALS AND OBJECTIVES Generally, wetland and stream buffers in the corridor do not have complex vegetation structure that contributes to water quality improvement, erosion control, wildlife food and cover, or shading. The goal of restoring temporary impacts to buffers is to increase the buffer functions on site over existing conditions2, while allowing safe operation of Southcenter Boulevard project. The goal of the plan is to also enhance existing buffer areas within the Gilliam Creek ravine to compensate for the permanent loss of buffer area and create a native conifer upland. 5.3.1 Construction Plan 5.3.1.1 Site Preparation Sound Transit will restore cleared areas within the project corridor by removing temporary fill for construction access and restoring grades to pre -project conditions. After temporary construction access has have been removed, site preparation will consist of lofting or loosening compacted soils and incorporating soil amendments where necessary, and planting native species. No other grading is proposed for wetland and stream buffers. All invasive plant material control will occur by hand. Mechanized clearing is discouraged within the ravine area as there are areas of existing native plant species within the ravine that should be retained. 5.3.1.2 Planting It is anticipated that all new plantings will be "pit" planted within the project area. Where container stock is being planted, native soil will be amended with organic compost at a ratio of 3:1, native soil to compost. Depending upon the time of year when the riparian plantings will be installed, it may be appropriate to substitute some of the container stock with live stakes. Live stake material, if used, will be stored in water prior to installation. Composted organic mulch will be applied around all planted material to reduce weed competition. Plant densities will be 280 trees per acre and 2,100 shrubs per acre. Table 5-4 provides a conceptual list of plant species that are to be installed in the ravine area and in areas that were temporarily disturbed. 5.3.1.3 Site Protection Oversight during and following construction of the project and wetland mitigation sites will be required to ensure that the projects are successfully implemented. Prior to any site work, a pre -construction meeting will be held with the general contractors, engineers, landscape contractors, landscape architects, and biologists to ensure that the work is constructed as designed, and that contractors understand and comply with all environmental permit conditions. A construction monitor will be available for on-site inspections and approval of all work during construction. 2 The exception is the temporary buffer impact within the construction easement in front of the apartment complex on the 3700 block of Southcenter Boulevard. The current mowed grass and landscaping is under the management of the apartment complex and restoration will match current conditions. October 2006 1553-2535-004 (02) 5-9 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit High visibility fencing will be installed at the edge of all sensitive areas to denote which areas are outside of the construction area. Maintenance of these fences will occur throughout the project duration. Table 5-4. Proposed Plant Species for the Gilliam Creek Ravine and Restoration of Temporary Impacts in the right-of-way Plant Community / Species Size/condition Plant Spacing b Upland Conifer Buffer Enhancement Western Redcedar (Thuja plicata) Sitka spruce (Picea sitchensis) Douglas fir (Pseudostuga menziesit) Western hemlock (Tsuga heterophylla) Oregongrape (Mahonia nervosa) Swordfem (Polystichum munitum) Indian plum (Oemleria cerasiformis) 3' - 4' tall 10' o.c 3' - 4' tall 1 10' o.c 3' - 4' tall 10' o.c 3'-4'tall 10'o.c 2 gal 4' o.c. 2gal 4' o.c. 2 gal. 5' o.c. Riparian Enhancement Red -osier dogwood (Cornus sericea ssp. sericea) 2 gal/live stake 5' o.c./1' o.c. Sitka willow (Salix sitchensis) 2 gal/live stake 5' o.c./1' o.c. Pacific willow (Salix lucida) 2 gal/live stake 5' o.c./1' o.c. Restoration in right-of-way Red alder (Alnus rubra) Snowberry (Symphoricarpos albus) Swordfem (Polystichum munitum) Oregongrape (Mahonia nervosa) Clustered rose (Rosa piseearpa) n u 1"1.444-4 2 gal _ 1 gal .. 2 gal 2 gal 2 gal 10'o.c 4' o.c. 14' o.c. r - 4' o.c. 4' o.c. 5.3.1.4 Construction Sequence and Timing Buffer planting for both wetlands and stream in the project right-of-way will occur after temporary construction access roads are removed and after the new control structure has been installed. Ideally, the plants will be installed within the late fall or early to mid -spring and will ideally be planted before impacts occur. 5-10 October 20061 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 6. MONITORING PLAN The Southcenter Boulevard project mitigation sites will be monitored for a minimum of five years. Formal monitoring procedures and reporting will be performed in years one, two, three, and five after initial acceptance of the mitigation construction. Success standards will be assessed at years one, two, three, and five. The site should be evaluated informally at year four to evaluate survival rates and document the presence of non-native invasive species. Monitoring reports will be submitted to ACOE and City of Tukwila for review and comment. Successful mitigation will be measured by attainment of the performance standards. Monitoring will cease as soon as all success standards have been attained. Specific monitoring will include, but not be limited to, the following: after installation, a biologist will flag the woody plants; dead plants will be identified and replaced after one year. Percent cover will be determined along transects or circular plots established in the wetland. Percent areal cover will be measured using the point intercept, line intercept, or circular plot methods for each species. Percent cover of woody plant species will be totaled to calculate percent woody cover. Percent cover of non-native plant species will be calculated. Percent cover of native and non-native herbaceous species within the emergent areas and woody vegetation areas will be calculated separately. The fence line will be walked at each monitoring event to look for disrepair. 6.1 PERFORMANCE STANDARDS AND EVALUATION Table 6-1 identifies the goal, objectives, performance standards and evaluation methods for buffer and riparian mitigation in Southcenter Boulevard Improvement project area. Annual monitoring will collect data at the buffer mitigation sites. Final construction plans, specifications and estimates, along with contractor notes about any required changes, will be used as the basis for monitoring to evaluate achievement of performance standards. If the sites do not meet performance standards, Sound Transit will manage the sites adaptively and develop contingency measures to respond to conditions. Table 6-1. Goal, Objectives, Performance Standards and Evaluation Methods for Mitigating Temporary and Permanent Impacts to Buffers Southcenter Blvd Improvement Project Goal and Objectives Performance Standards Evaluation Methods Goal: To create a native buffer that stabilizes soil, improves water quality, improves wildlife habitat. Objectives Plant native trees and shrubs species with high food and cover value for wildlife and to create a structurally complex and diverse plant community. 100% survival of planted trees and shrubs at the end of Year 1. 80% survival of planted shrubs at the end of Year 3 and 5. In forested buffers, evidence of positive growth (over the previous year) by tree species in Year 3, and 5. Record and monitor installed conditions. Establish permanent monitoring locations. Photograph the site. Provide panoramic views of the site at the same reference point during each monitoring period Conduct annual vegetation sampling (plots, transects or plotless techniques) to estimate woody plant mortality and identify and control noxious weed invasion if any. October 2006 I 553-2535-004 (02) 6-1 Welland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 6.2 MAINTENANCE AND ADAPTIVE MANAGEMENT The goal of the proposed mitigation is to create a functional, self-sustaining system that requires little or no maintenance. Sound Transit will have access to the site throughout the monitoring period and will be responsible for maintenance of these sites in accordance with permit conditions established by the ACOE, City of Tukwila, and Washington Department of Fish and Wildlife. Maintenance activity to control nuisance species in the mitigation areas may be necessary for this project. If during the monitoring period, it becomes evident that invasive species are impeding establishment of desirable natives, contingency measures will be implemented. Prior to implementing any corrective actions, site conditions will be evaluated to determine the cause of the problem and determine the most appropriate countermeasures. No irrigation is proposed at this site. As a result, all planting will be installed in the dormant season, and it may be necessary for the contractor to provide supplemental water during particularly draughty periods in the summer months. Regional weather patterns vary. As a result, Sound Transit uses the principles of adaptive management to guide post -construction wetland management activities. Adaptive management is driven by the monitoring objectives that describe the desired condition of a site. If the monitoring objectives are not met, adaptive management activities are planned to achieve the desired condition. Management activities may include implementation of contingencies described below, or other activities as appropriate. Adaptive management activities are implemented to achieve the site objectives as measured by the success standards. All adaptive management activities will be described in the monitoring reports. 6.3 CONTINGENCY PLAN Contingency plans may be necessary if the mitigation sites fail to meet performance standards. If a site does not meet performance standards, Sound Transit will evaluate the reasons for failure and will address the causes. For example, if all plants of a single species die, a different species may be more appropriate and should be planted. If weeds are out competing planted species, additional or alternative weed -control efforts may be necessary. Other contingency actions may include providing additional irrigation and installing collars, or other deterrents to herbivory. The content of the contingency plan will depend on the problem being addressed. The main focus of this mitigation plan is enhancement planting; therefore, failure to meet the proposed vegetation performance standards could result in some or all of the following contingency actions: • Plant additional vegetation — Additional vegetation planting may be required to meet cover or plant survival standards. Plant species will be evaluated in relation to site conditions to determine if plant substitutions will be required. • Weed control — Control of competitive weed species may be required if plant survival or cover standards are not met. Methods of weed control could include hand or mechanical weeding, herbicide, or mulching. Herbivore control — If vegetation cover or survival standards are not met because of animal browse, the wildlife responsible will be identified and appropriate damage control methods employed. Possible control methods include fencing, use of repellents, and temporary barriers. • 6-2 October 2006 553-2535-004 (02) Wetland and Stream Delineation and Conceptual Mitigation Plgn Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit • Replace or repair missing or damaged structures — If habitat structures are vandalized, missing, or damaged due to human activity, they will be repaired or replaced as necessary. 6.4 PERFORMANCE SECURITY If required, Sound Transit will post a security bond for the sensitive area mitigation in accordance with TMC 18.45. October 2006 I 553-2535-004 (02) 6-3 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit 7. LITERATURE CITED ACOE (U.S. Army Corps of Engineers). 2002. Guidance on Compensatory Mitigation Projects for Aquatic resources Impacts Under the Corps Regulatory Program Pursuant to Section 404 of the Clean Water Act and Section 10 of the Rivers and Harbors Act of 1899. Regulatory guidance Letter. December 24, 2002. Brinson, MM. 1993. A hydrogeomorphic classification for wetlands. Technical Report WRP- DE-4, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. Cowardin, L.M., Carter, V., Golet, F.C., and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. Government Printing Office, Washington, D.C. Ecology (Washington State Department of Ecology). 1997. Washington State Wetlands Identification and Delineation Manual. Ecology Publication #96-94. Olympia, Washington. Ecology (Washington State Department of Ecology). 2001. Stormwater management manual for Western Washington. Publication Nos. 99-11 to 99-15. Olympia, Washington. Environmental Laboratory. 1987. U.S. Army Corps of Engineers Wetland Delineation Manual. Technical Report Y-87-1, Environmental Laboratory, Department of the Army, Waterways Experiment Station, Vicksburg, Mississippi. Federal Emergency Management Agency. 1995. FEMA Map. Flood Insurance Rate Map (FIRM). King County, Washington and incorporated areas. Panel 645 of 1725. Map Number 53033 C0645 F. Map repository: City Hall, City of Tukwila, Washington. Franklin, J.F. and Dyrness, C.T. 1973. Natural vegetation of Oregon and Washington. Oregon State University Press. Greytag Macbeth Corporation. 1994. Munsell soil color charts. New Windsor, New York. Herrera. 1996. Fostoria Basin, stormwater quality management plan. Prepared by Herrera Environmental Consultants, Inc. for City of Tukwila. Seattle, Washington. Herrera. 2001. Gilliam Creek Basin Stormwater Management Plan. Prepared by Herrera Environmental Consultants, Inc., Seattle, Washington. Herrera. 2002. Memorandum to Margaret Clancy, Parametrix, July 11, 2002. Prepared by Herrera Environmental Consultants, Inc., Seattle, Washington. Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press, Seattle, Washington. Karr J. R. and E. W. Chu. 1999. Biological Monitoring and Assessment: Using Multimetric Indexes Effectively. Seattle, WA: University of Washington. King County DNR (Department of Natural Resources). 1998. King County, Washington Surface Water Design Manual. Kleindl, W. J. 1995. A Benthic Index of Biotic Integrity for Puget Sound Lowland Streams, Washington, USA. M.S. Thesis, University of Washington. Seattle, WA. NOAA (National Oceanic and Atmospheric Administration). 2005. at http://www.nwr.noaa.gov/lsalmon/salmesa/index.htm. Parametrix 2004. Tukwila Freeway Route Link Light Rail Sensitive Areas Study Wetlands and Streams. Sound Transit, Seattle, WA. October 2006 1553-2535-004 (02) 7-1 Wetland and Stream Delineation and Conceptual Mitigation Plan Southcenter Boulevard Improvements: Tukwila, Washington Sound Transit Reed, Jr., P.B. 1997. Revision of the national list of plant species that occur in wetlands. U.S. Department of Interior, Fish and Wildlife Service, Washington, D.C. Sound Transit. 1999. Biological assessment for bald eagles, peregrine falcons, and bull trout. Prepared by Parametrix, Inc. Prepared for Sound Transit, Central Link Light Rail, Seattle, Washington. Sound Transit 2001 Central Link Light Rail Project, Tukwila Freeway Route Biological Assessment for Chinook, Coho, Marine Mammals, and Reptiles Snyder, D.E., G.P. Philip, and R.F. Russell. 1973. Soil survey of King County area, Washington. U.S. Department of Agriculture, Soil Conservation Service. In cooperation with the Washington Agricultural Experiment Station. USDA (U.S. Department of Agriculture). 1996. PLANTS database. Natural Resource Conservation Service, National Plant Data Center. Baton Rouge, Louisiana. USFWS (U.S. Fish and Wildlife Service). 1987. National wetland inventory maps, Des Moines, Washington and Seattle South, Washington quadrangles. USFWS (U.S. Fish and Wildlife Service). 2005. at (http://ecos. fws.gov/servlet/TESSSpecies Report/generate). Williams, R.W., R.M. Laramie, and J.J. Ames. 1975. A catalog of Washington streams and salmon utilization - Volume I, Puget Sound Region. Washington Department of Fisheries (currently Washington Department of Fish and Wildlife). WRIA 9 (Water Resource Inventory Area 9) Steering Committee. 2002. Near term action agenda for salmon habitat conservation, Green-Duwamish River and Central Puget Sound Watershed, Water Resource Inventory 9. 7-2 October 2006 1553-2535-004 (02) APPENDIX A Photographs of Gilliam Creek Ravine APPENDIX A Photographs of Gilliam Creek Ravine Existing outfall structure on Gilliam Creek October 2006 Gilliam Creek Ravine looking to the south Gilliam Creek North Tributary, looking to the west near the confluence with the mainstem of Gilliam Creek 553-2535-004 (02) A-1 APPENDIX B Wetland Delineation Data Sheets Parametrix Data Plot#: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 1/30/2005 Applicant/Owner: Sound Transit Investigator: WJK ID 1987 Method © 1989 Method 0 1997 WA SL Method County: King GC1 W-1 GC1 State: WA Community ID: Shrub Do Normal Circumstances exist on the site? Yes X No Field Plot ID: GC1 W-1 Is the site significantly disturbed (Atypical Situation)? Yes No X Is the area a potential Problem Area? Yes No X Remarks (Explain sample location, disturbances, problem areas): GC1 is located west of Gillian Creek north of the South Center Bullivard and the small tributary off the northwestern roadside fill. VEGETATION (+oDominant species are checked) Plant Species Geranium robertianum 1. 2. 3. 4. 4,0 5. Ranunculus repens % Cover Stratum Indicator Herb NL 5 Herb FACW Tolmiea menziesli Herb FAC Rubus armeniacus Rubus spectabliis 6 , Alnus rubra Shrub FACU 25 Shrub FAC+ 2 Tree FAC Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (') as showing 100 morphological adaptations to wetlands. "T" indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): 100 percent of the dominant plants are hydrophytic and therefore meets the wetland vegetation criterion. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water: Surface (In.) Depth to Free Water in Pit: Surface (In.) Depth to Saturated Soil: Surface (in.) Wetland Hydrology Indicators (Describe in Remarks): Primary Indicators: Inundated X Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Saturation to the soil surface is indicative of wetland hydrology. Paras etrix Project/Site: Tukwilla Regional Detention SOIL Soil Survey Data: Map Unit Name: Unmapped Urban Soil Date: 1/30/2005 Taxonomy (Subgroup): Profile Description: Depth Horizon (inches) Designation Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: GC1 W-1 GC1 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-5 A 10YR3/1 5-18+ B 2.5Y 412 2.5Y 5/4 Hydric Soil Indicators: Histosol Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime Reducing Conditions X Cloyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Mottles and low chroma colors are hydric soil indicators. Sandy Loam Sandy Gravelly Loam _ Listed on Local Hydric Soils List Listed on State Hydric Soils List _ Listed on National Hydric Soils List _ Aquic Moisture Regime _ Organic Streaking in Sandy Soils X Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Solis Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): All three criteria are present. The sample location Is within a wetland. Yes X No iia rametrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional,Detention Date: 1/30/2005 Applicant/Owner: Sound Transit County: King Investigator. WJK State: WA ❑d 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? Yes X No Yes No X Yes No X Remarks (Explain sample location, disturbances, problem areas): This is an upland data plot to support wetland determanaiton for Wetland GC -1. GC1 U-1 GC1 Community ID: Upland Field Plot ID: GC1 U-1 VEGETATION (vDominant species are checked) Plant Species % Cover Stratum Indicator • 1 , Oemleria cerasiformis 40 Shrub FACU • 2 . Rubus armenlacus 20 Shrub FACU Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (") as showing 0 morphological adaptations to wetlands. "f" indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): None of the dominant plants rooted in the wetland are hydrophytc, therefore, the wetland vegetation criterion is not met. HYDROLOGY Recorded Data (Describe in Remarks): Wetland Hydrology Indicators (Describe in Remarks): Stream, Lake, or Tide Gage . Primary Indicators: Aerial Photograph Inundated Other Saturated in Upper 12 inches X No Recorded Data Available Saturated in Upper 18 inches (1989 method only) Water Marks Field Observations: Drift Lines Sediment Deposits Drainage Patterns in Wetlands Depth of Surface Water: None (in.) Depth to Free Water in Pit: >18 (in.) Depth to Saturated Soil: >18 (In.) Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Wetland hydrology is not present. Pa re metrix Project/Site: Tukwllla Regional Detention SOIL Soil Survey Data: Map Unit Name: Unmapped Urban Soil Date: 1/30/2005 Taxonomy (Subgroup): - Profile Description: Depth Horizon Matrix Color Mottle Color (Inches) Designation (Munsell Moist) (Munsell Moist) Data Piot #: Wetland: GC1 U-1 GC1 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-3 A 10YR 312 3-18+ B 2.5Y4/3 10YR 4/4 Loam Common, Medium, Distinct Gravelly Sandy Loam Hydric Soil Indicators: Histosol Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime Reducing Conditions Gleyed or Low -Chrome Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): The color of the soil matrix is not indicltive of hydric soil, _ Listed on Local Hydric Soils List _ Listed on State Hydric Soils List _ Listed on National Hydric Soils List _ Aquic Moisture Regime _ Organic Streaking in Sandy Soils X Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes Yes No No Yes No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): Wetland vegetation, hydrology, and sols are absent. This sample area is not within a wetland. Yes No X Parametrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 1/30/2005 Appiicant/Owner: Sound Transit County: King Investigator: WJK State: WA © 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? Yes X No Yes No X Yes No X GC2 W-1 GC2 Community ID: Shrub Field Plot ID: GC2 W-1 Remarks (Explain sample location, disturbances, problem areas): Wetland GC2 is a slope wetland connected to a riverine wetland. This data plot was taken on the stream bench in the riverine portion of the wetland. VEGETATION to Dominant species are checked) Plant Species % Cover Stratum Indicator 1 . Athyrium filix-femina t Herb FAC+ 2 , Phalaris arundinacea t Herb FACW 3 , Ranunculus repens t Herb FACW , . q , Solanum duicamara 20 Herb FAC+ • 5 . Urtica dloica 20 Herb FAC+ ✓ 6 . Rubus armeniacus 30 Shrub FACU 7 , Rubus spectabllis 15 Shrub FAC+ g , Sambucus racemosa t Shrub FACU Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (*) as showing 75 morphological adaptations to wetlands. "T° indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): Greater than 50 percent of the dominant plants rooted in the wetland are hydrophytic, therefore, the wetland vegetation criterion is met. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water. None (In.) Depth to Free Water in Pit: 12 (in.) Depth to Saturated Soil: 6 (in.) Wetland Hydrology Indicators (Describe in Remarks): Primary Indicators: Inundated X Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Pattems in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Saturation in the upper 12 inches, is indicative of wetland hydrology. ParamnetrIx Pro)ectlSite: Tukwilla Regional Detention SOIL Soli Survey Data: Map Unit Name: Unmapped Urban Soil Taxonomy (Subgroup): Profile Description: Depth Horizon (Inches) Designation Date: 1/30/2005 Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: GC2 W-1 GC2 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-6 A 10YR 3/2 6-18+ C Reduced Sand Loam Hydric Soil Indicators: Histosol Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime Reducing Conditions X Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Mottles and low chroma colors are hydric soil indicators. Sand _ Listed on Local Hydric Soils List _ Listed on State Hydric Soils List _ Listed on National Hydric Soils List X Aquic Moisture Regime _ Organic Streaking In Sandy Soils Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): All three crtterla are present. The sample location is within a wetland. Yes X No Pa rametrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Applicant/Owner: Sound Transit Investigator: WJK 0 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Yes X Is the site significantly disturbed (Atypical Situation)? Yes Is the area a potential Problem Area? Yes Date: 1/30/2005 GC2 W-2 GC2 County: King State: WA No No X No X Community ID: Shrub Field Plot ID: GC2 W-2 Remarks (Explain sample location, disturbances, problem areas): Wetland GC2 is a slope wetland connected to a riverine wetland. This data plot was taken on the slope portion of the wetland. VEGETATION .t'/Dominant species are checked) Plant Species % Cover Stratum Indicator 1 . Athyrium fiilx-femina 10 Herb FAC+ 2 . Urtica dloica 30 Herb FAC+ 3 , Oemlerla cerasiformis 10 Shrub FACU • 4 , Rubus armeniacus 80 Shrub FACU ," 5 , Rubus spectabilis 20 Shrub FAC+ • 6 . Alnus rubra 20 Tree FAC Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (*) as showing 75 morphological adaptations to wetlands. "T" indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): Greater than 50 percent of the dominant plants rooted In the wetland are hydrophytic, therefore, the wetland vegetation criterion is met. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water: Surface (In.) Depth to Free Water in Pit: Surface (in.) Depth to Saturated Soil: Surface (in.) Wetland Hydrology Indicators (Describe In Remarks): Primary Indicators: X Inundated X Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Pattems in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Saturation to the soil surface is indicative of wetland hydrology. Pa rametrix Project/Site: Tukwilla Regional Detention SOIL Soli Survey Data: Map Unit Name: Unmapped Urban Soil Taxonomy (Subgroup): - Date: 1/30/2005 Profile Description: Depth Horizon Matrix Color Mottle Color (inches) Designation (Munsell Moist) (Munsell Moist) Data Plot #: Wetland: GC2 W-2 GC2 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Abundance/Contrast Texture, Concretions, Rhizospheres, etc. 0-5 A 10YR 3/1 10YR 5/3 common medium faint Loam 5-18+ B 10YR 3/1 Hydric Soil Indicators: Histosol Histic Epipedon Sulfidic Odor Probabie Aquic Moisture Regime Reducing Conditions X Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Low chrome colors am hydric soil indicators. Loam Listed on Local Hydric Soils List Listed on State Hydric Soils List Listed on National Hydric Soils List Aquic Moisture Regime Organic Streaking in Sandy Soils Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Solis Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (0 applicable, explain any differences between 1987 and 1989 delineation results): All three criteria are present. The sample location Is within a wetland. Yes X No Parametrix Project/Site: Tukwilla Regional Detention SOIL Soil Survey Data: Map Unit Name: Unmapped Urban Soil Taxonomy (Subgroup): Profile Description: Depth Horizon (Inches) Designation Date: 1/30/2005 Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: GC3 W-1 GC3 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle 'Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-8 A 10YR 3/2 10YR 4/3 Few, medium, faint Loam 8-12 B 10YR3/1 Loam 12-18+ C reduced sand sand Hydric Soil Indicators: Histosoi Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime Reducing Conditions X Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Descri be soil disturbances, local variations, etc.): Low chrome colors are hydric soil indicators. _ Listed on Local Hydric Soils List Listed on State Hydric Soils List _ Listed on National Hydric Soils List X Aquic Moisture Regime _ Organic Streaking in Sandy Soils Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): All three criteria are present. The sample location is within a wetland. Yes X No Pa ra m etri x Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 1/30/2005 Applicant/Owner.. Sound Transit County: King Investigator: WJK State: WA GC3 W-1 GC3 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Yes X No Is the site significantly disturbed (Atypical Situation)? Yes No X Is the area a potential Problem Area? Yes No X Remarks (Explain sample location, disturbances, problem areas): Wetland GC -3 is a riverine wetland. This data plot was taken on stream bench. Community ID: Shrub Field Plot ID: GC3 W-1 VEGETATION 1...0 Dominant species are checked) Plant Species % Cover Stratum Indicator 1 , Athyrium fllix-femina t Herb FAC+ 2 . Equisetum telmateia t Herb FACW 3 , Phalaris arundlnacea 1 Herb FACW q . Ranunculus repens t Herb FACW O 5. Solanum dulcamara 20 Herb FAC+ O g , Urtica dioica 20 Herb FAC+ 7 . Rubus armeniacus 10 Shrub FACU O g , Rubus spectabilis 25 Shrub FAC+ Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (") as showing 100 morphological adaptations to wetlands. "r indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): 100 percent of the dominant plants are hydrophytic and therefore meets the wetland vegetation criterion. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water: None (in.) Depth to Free Water in Pit: 12 (in.) Depth to Saturated Soil: 3 (in.) Wetland Hydrology indicators (Describe in Remarks): Primary Indicators: Inundated X Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Open water in depressions on depositional bar. Saturation in the upper 12 inches is indicative of wetland hydrology. Pa rametrix Project/Site: Tukwilla Regional Detention SOIL Soil Survey Data: Map Unit Name: Unmapped Urban Soil Date: 1/30/2005 Taxonomy (Subgroup): Profile Description: Depth Horizon . Matrix Color (Inches) Designation (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: GC3 U-1 GC3 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-2 A 10YR 2/1 Loam 2-9 C 10YR 4/3 9-14 Bb 10YR 3/2 10YR 4/3 Many, medium, faint 14-20+ Bbll 7.5YR 3/1 10YR 3/4 Many Medium fine Sand Loam Sandy Loam Hydric Soil Indicators: Histosol Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime Reducing Conditions Gleyed or Low-Chroma Colors High Organic Content In Surface Layer. Remarks (Describe soil disturbances, local variations, etc.): Typical soil conditions of flood plain adjacent to insiced reaches of the Gillian Creek tributary. The color of the soli matrix is not indidtive of hydric soil Usted on Local Hydric Soils List Listed on State Hydric Soils List Listed on National Hydric Solis List Aquic Moisture Regime Organic Streaking in Sandy Solis X Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic'Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes No Yes No X X Is this Sampling Point Within a Wetland? Yes No X Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): Although wetland vegetation is present, wetland hydrology, and soils are absent. Therefroe, sample area is not within a wetland. Pararnetrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwllla Regional Detention Date: 1/30/2005 Applicant/Owner: Sound Transit Investigator: WJK 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? County: King GC3 U-1 GC3 State: WA Yes X No Yes No X Yes No X Remarks (Explain sample location, disturbances, problem areas): This is an upland data plot to support wetland determanaiton for Wetland GC -3. Community ID: Upland FIeId.Plot ID: GC3 U-1 VEGETATION ("Dominant species are checked) Plant Species Athyrium flux-femina Solanum d uicamara Urtica dioica Rubus armeniacus 5 Rubus spedablils % Cover Stratum Indicator 10 Herb FAC+ 40 Herb FAC+ 40 Herb FAC+ 10 Shrub FACU 40 Shrub FAC+ Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Inctude species noted (') as showing 100 morphological adaptations to wetlands. "T" indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): 100 percent of the dominant plants are hydrophyfic and therefore meets the wetland vegetation criterion. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water: None (In.) Depth to Free Water in Pit: 14 (in.) Depth to Saturated Soil: 14 (in.) Wetland Hydrology Indicators (Describe in Remarks): Primary Indicators: Inundated, Saturated in Upper 12 Inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Wetland hydrology is not present. Typical hydrologic condition of flood plain adjacent to insiced reaches of the Gillian Creek tributary. Pa rametrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 1/30/2005 Applicant/Owner: Sound Transit County: King Investigator: WJK State: WA ID 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? Yes X No Yes No X Yes No X GC2/5 U-1 GC3 Remarks (Explain sample location, disturbances, problem areas): This is an upland data plot to support wetland determanalton for Welland GC -2 and GC -5. Community ID: Upland Field Plot ID: GC2/ U-1 VEGETATION I.VDominant species are checked) Plant Species % Cover Stratum Indicator V 1 . Rubus armeniacus 100 Shrub FACU Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (") as showing 0 morphological adaptations to wetlands. "T' indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): None of the dominant plants rooted in the wetland are hydrophytic, therefore, the wetland vegetation criterion is not met. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other No Recorded Data Available Field Observations: Depth of Surface Water: None (in.) Depth to Free Water in Pit: >18 (in.) Depth to Saturated Soil: >18 (in.) Wetland Hydrology Indicators (Describe in Remarks): Primary Indicators: Inundated Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Pattems in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Wetland hydrology is not present. Pa ra matrix Project/Site: Tukwilla Regional Detention SOIL Soil Survey Data: Map Unit Name: Unmapped Urban Soil Date: 1/30/2005 Taxonomy (Subgroup): Profile Description: Depth Horizon (Inches) Designation Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: GC215 U-1 GC3 Drainage Class: Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-5 A 10YR 3/2 Loam 5-15 8 10YR4/3 10YR 2/4 Common Course Fine 15-18+ C 2.5Y 5/4 2.5Y 4/3 common coarse faint Hydric Soil Indicators: Histosol Histic Epipedon Sultidic Odor Probable Aquic Moisture Regime Reducing Conditions Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): The color of the soil matrix is not indicative of hydrlc soil. Loam loam Listed on Local Hydric Solis List Listed on State Hydric Soils List Listed on National Hydric Solis List Aquic Moisture Regime Organic Streaking in Sandy Soils Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes No X Yes No X Yes No X Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): Wetland vegetation, hydrology, and soils are absent. This sample area is not within a wetland. Yes No X Parametrix Project/Site: Tukwilla Regional Detention SOIL SoII Survey Data: Map Unit Name: Unmapped Urban Soil Date: 1/30/2005 Taxonomy (Subgroup): Profile Description: Depth Horizon (Inches) Designation Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: GC5 W-1 GC3 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Abundance/Contrast Texture, Concretions, Rhizospheres, etc. 0-5 A 10YR 3/1 10YR 5/3 common coarse faint loam 10-18+ B 10YR 5/2 10YR 4/2 common coarse faint silt Hydric Soli Indicators: Histosol Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime Reducing Conditions X Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Mottles and low chrome colors are hydric soil indicators. Listed on Local Hydric Soils List Listed on State Hydric Soils List _ Listed on National Hydric Soils Ust _ Aquic Moisture Regime _ Organic Streaking in Sandy Soils X Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): All three criteria are present. The sample location is within a wetland. Yes X No Parametrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 1/30/2005 Applicant/Owner: Sound Transit Investigator: WJK County: King GC5 W-1 GC3 State: WA 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Yes X No Is the site significantly disturbed (Atypical Situation)? Yes No X is the area a potential Problem Area? Yes No Remarks (Explain sample location, disturbances, problem areas): Wetland GC -5 is a slope wetland. Community ID: Shrub Field Plot ID: GC5 W�1 VEGETATION 00Dominant species are checked) Plant Species Athyrium filix-femina • 1. 2. N 3. 4. • 5. Equisetum teimatela Ranunculus repens % Cover Stratum Indicator 20 Herb FAC+ 10 Herb FACW Solanum duicamara 20 Herb FACW 10 Herb FAC+ Rubus armeniacus 20 Shrub FACU Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (*) as showing 66 morphological adaptations to wetlands. "T indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): Greater than 50 percent of the dominant plants rooted in the wetland are hydrophytic, therefore, the wetland vegetation criterion Is met. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water. None (in.) Depth to Free Water in Pit: 3 (in.) Depth to Saturated Soil: surface (in.) Wetland Hydrology indicators (Describe in Remarks): Primary Indicators: Inundated X Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Patterns in Wetlands Secondary Indicators (2 or m ore required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Saturation to the soil surface is indicative of wetland hydrology. Parametrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 1/30/2005 Applicant/Owner: Sound Transit County: King Investigator. WJK State: WA 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? Yes X No Yes No X Yes No X Remarks (Explain sample location, disturbances, problem areas): Welland GC -6 is a slope wetland. GC6 W-1 GC6 Community ID: Shrub Field Plot ID: GC6 W-1 VEGETATION (Dominant species are checked) Plant Species % Cover Stratum Indicator 1 , Tolmiea menziesli 5 Herb FAC 2 . Oemleria cerasifonnis T Shrub FACU 3 , Rubus armeniacus T Shrub FACU ,,o 4 , Rubus spectabills 50 Shrub FAC+ Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (') as showing 100 morphological adaptations to wetlands. 'T' indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): 100 percent of the dominant plants are hydrophytic and therefore meets the wetland vegetation criterion. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water. Surface (in.) Depth to Free Water in Pit: Surface (in.) Depth to Saturated Soil: Surface (in.) Wetland Hydrology Indicators Primary Indicators: Inundated (Describe in Remarks): X Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Saturation to the soil surface is indicative of wetland hydrology. Pa rametrix Project/Site: Tukwilla Regional Detention SOIL Soil Survey Data: Map Unit Name: Unmapped Urban Soil Taxonomy (Subgroup): - Profile Description: Depth Horizon (Inches) Designation Date: 1/30/2005 Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Piot #: Wetland: GC6 W-1 GC6 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-5 A 10YR 4/2 Loam 5-10 B 10YR 4/2 10YR 4/4 Common, Meduim, Faint Loam 10-18+ C 10YR 3/1 10YR4/4 Common, Meduim, Faint Loam Hydric Soil Indicators: Histosol Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime Reducing Conditions X Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Mottles and low chroma colors are hydric soil Indicators. _ Listed on Local Hydric Soils List _ Listed on State Hydric Soils List Listed on National Hydric Soils List Aquic Moisture Regime _ Organic Streaking in Sandy Soils X Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): Ali three criteria are present. The sample location is within a wetland. Yes X No Param etrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 1/30/2005 Applicant/Owner: Sound Transit Investigator: WJK 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? County: King GC6 U-1 GC6 State: WA Yes X No Yes No X Yes No X Remarks (Explain sample location, disturbances, problem areas): This is an upland data plot to support wetland detennanaiton for Wetland GC -6. Community ID: Upland Field Plot ID: GC6 U-1 VEGETATION (vDominant species are checked) Plant Spec les % Cover Stratum Indicator 1 . Tellima gradiflora 10 Herb NI V 2. 3. V 4. 5. 6. V 7. 8. 9. Oemleria cerasiforrnis 20 Shrub FACU Rubus armenlacus 5 Shrub FACU Rubus speotabilis 20 Shrub FAC+ Rubus ursinus Shrub FACU Sambucus racemosa 5 Shrub FACU Acer macrophyllum 20 Tree FACU Alnus rubra 5 Tree FAC Prunus spp. Tree Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (') as showing 0 morphological adaptations to wetlands. "T' indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): None of the dominant plants rooted in the wetland are hydrophytic, therefore, the wetland vegetation criterion is not met. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other X No Recorded Data Available Field Observations: Depth of Surface Water. None (in.) Depth to Free Water in Pit: >18 (in.) Depth to Saturated Soil: >18 (in.) Wetland Hydrology Indicators Primary Indicators: Inundated Saturated in Upper 12 inches Saturated in Upper 18 Inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Pattems in Wetlands (Describe in Remarks): Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Wetland hydrology is not present. Parametrix Project/Site: Tukwilla Regional Detention SOIL Soil Survey Data: Map Unit Name: Unmapped Urban Soil Taxonomy (Subgroup): Profile Description: Depth Horizon (Inches) Designation Date: 1/30/2005 Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: GC6 U-1 GC6 Drainage Class: - Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-9 A 10YR3-3 Gravelly Loam 9-18+ B 10YR 3/3 10YR 3/5 Common Medium Faint Hydric Soil Indicators: Histosol Histic Epipedon Suifidic Odor Probable Aquic Moisture Regime Reducing Conditions Gleyed or Low-Chroma Colors High Organic Content In Surface Layer Remarks (Describe soil disturbances, local variations, etc.): The color of the soil matrix is not indicative of hydric soil. Gravelly Loam _ Listed on Local Hydric Solis List _ Listed on State Hydric Soils List _ Listed on National Hydric Soils List Aquic Moisture Regime _ Organic Streaking in Sandy Soils X Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes No Yes No Yes No is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): Wetland vegetation, hydrology, and soils are absent. This sample area is not within a wetland. Yes No X Pa rametrix Data Plot #: Gpipe 1-W Wetland: Gilliam Pipe 1 WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 7/6/2006 Applicant/Owner: Sound Transit Investigator. WJK ❑ 1987 Method ❑ 1989 Method El 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? County: King State: WA Yes X No Yes No X Yes No X Community ID: Shrub Field Plot ID: 1-W Remarks (Explain sample location, disturbances, problem areas): Wetland is located in a small depression east of the foot path between the condominimums and the local school. VEGETATION (v Dominant species are checked) Plant Species % Cover Stratum Indicator +I 1 . Comus sericea 90 Shrub FACW 2 . _1 clunla eriCea W 3. Rubus armeniacus 10 Shrub FACU Rubus spedabills 10 Shrub FAC+ Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (*) as showing 100 morphological adaptations to wetlands. 'T" indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): 100 percent of the dominant plants are hydrophytic and therefore meets the wetland vegetation criterion. HYDROLOGY Recorded. Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other No Recorded Data Available Field Observations: Depth of Surface Water. none (in.) Depth to Free Water in Pit: >18 (in.) Depth to Saturated Soil: >18 (in.) Wetland Hydrology Indicators (Describe in Remarks): Primary Indicators: Inundated Saturated in Upper 12 inches Saturated in Upper 18 inches (1989 method only) X Water Marks Drift Lines Sediment Deposits Drainage Patterns In Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches X Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Water marks within the depression is indicative of wetland hydrology. Parametrix Project/Site: Tukwilla Regional Detention Date: 7/6/2006 SOIL Soil Survey Data: Map Unit Name: Urban land Taxonomy (Subgroup): N/A Profile Description: Depth Horizon Matrix Color (Inches) Designation (Munsell Moist) Mottle Cotor (Munsell Moist) Data Plot #: Wetland: Gpipe 1-W Gilliam Pipe 1 Drainage Class: Moderatly Well Drained Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-6 A 10YR 2/2 Loam 6-10 B 2.5Y4/2 10YR 4/4 M,M,D 10-18 B2 10YR5/2 10YR 5/1 C,C,D Hydric Soil Indicators: Histosol Histic Epipedon Sulfidic Odor Probable Aquic Moisture Regime X Reducing Conditions Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Mottles and reducing conditions are hydric soil indicators. Loam Loam _ Listed on Local Hydric Soils List _ Listed on State Hydric Solis List _ Listed on National Hydric Soils List _ Aquic Moisture Regime _ Organic Streaking in Sandy Soils X Mottles Other (Explain In Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): All three criteria are present. The sample location is within a wetland. Yes X No Pa rametrix Data Plot #: Wetland: WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 7/6/2006 Applicant/Owner: Sound Transit County: King Investigator: WJK State: WA ❑ 1987 Method ❑ 1989 Method ❑ 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? Yes. X No Yes No X Yes No X Gpipe .2-W Gilliam Pipe 2 Community ID: Shrub Field Plot ID: 2-W Remarks (Explain sample location, disturbances, problem areas): Small depression at the two of a NI slope for the detention access road to the south and a natural slopr to the north. VEGETATION (vDominant species are checked) Plant Species % Cover Stratum Indicator , Convolvulus arvensis 5 Herb NL ✓ 2 . Solanum dulcamara 20 Herb FAC+ wo 3 Comus sericea 20. Shrub FACW 4mns see lbea • 5 . Rubus armenlacus 20, Shrub FACU Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (`) as showing 66 morphological adaptations to wetlands. 1' indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): Greater than 50 percent of the dominant plants are hydrophytic and therefore meets the wetland vegetation criterion. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other No Recorded Data Available Field Observations: Depth of Surface Water: none (in.) Depth to Free Water in Pit: >18 (in.) Depth to Saturated Soil: >18 (in.) Wetland Hydrology Indicators (Describe in Remarks): Primary Indicators: Inundated Saturated In Upper 12 inches Saturated in Upper 18 inches (1989 method only) X Water Marks Drift Lines Sediment Deposits Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Stong indication of water marks (rust line) on chain link fence in wetland is indicative of wetland hydrology. Parametrix Project/Site: Tukwilla Regional Detention Date: 7/6/2006 SOIL Soli Survey Data: Map Unit Name: Urban land Taxonomy (Subgroup): N/A Profile Description: Depth Horizon (Inches) Designation Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetland: Gpipe 2-W Gilliam Pipe 2 Drainage Class: Moderately well drained Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-8 A 10YR 2/2 Loam 9-18 8 10YR 412 10YR 5/3 M, C, F Hydric Soil Indicators: Histosol Histic Epipedon Sutfldic Odor Probable Aquic Moisture Regime X Reducing Conditions X Reducing Conditions Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Mottles and reducing conditions are hydric soil indicators. Clay loam _ Listed on Local Hydric Soils Ust _ Listed on State Hydric Soils Ust _ Listed on National Hydric Soils Ust _ Aquic Moisture Regime _ Organic Streaking in Sandy Soils X Motties Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Yes X No Remarks (if applicable, explain any differences between 1987 and 1989 delineation results): Watermarks are strong indication of prolonged and repeated inundation. All three criteria are present. The sample location is within a wetland. Pa rametrix Data Plot #: Gpipe 3-W Wetland: Gilliam Pipe 3 WETLAND DETERMINATION (Modified from: 1987 ACOE Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 7/6/2006 Applicant/Owner: Sound Transit County: King Investigator. WJK State: WA ❑ 1987 Method ❑ 1989 Method ® 1997 WA St. Method Do Normal Circumstances exist on the site? Is the site significantly disturbed (Atypical Situation)? Is the area a potential Problem Area? Yes Yes Yes No X No X No X Community ID: Emergent Field Plot ID: 3-W Remarks (Explain sample location, disturbances, problem areas): Small depression at the two of a fill slope for the detention access road to the south and a natural slope to the north. VEGETATION ("Dominant species are checked) Plant Species % Cover Stratum Indicator • Athyrium tilbc-femina 20 Herb FAC+ 2 . Convolvulus arvensis 5 Herb NL • 3 , Solanum dulcamara 20 Herb FAC+ Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (*) as showing 100 morphological adaptations to wetlands. "T" indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): 100 percent of the dominant plants am hydrophytic and therefore meets the wetland vegetation criterion. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other No Recorded Data Available Field Observations: Depth of Surface Water: None (in.) Depth to Free Water in Pit: >18 (in.) Depth to Saturated Soil: >18 (in.) Wetland Hydrology Indicators (Describe In Remarks): Primary Indicators: Inundated Saturated In Upper 12 inches Saturated in Upper 18 inches (1989 method only) X Water Marks Drift Lines Sediment Deposits Drainage Pattems in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches X Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Water marks within the depression is indicative of wetland hydrology. Parametrix Project/Site: Tukwilla Regional Detention Date: 7/6/2006 SOIL Soil Survey. Data: Map Unit Name: Urban land Taxonomy (Subgroup): N/A Profile Description: Depth Horizon Matrix Color (Inches) Designation (Munsell Moist) Mottle Color (Munsell Moist) Data Plot #: Wetlan d: Gpipe 3-W Gilliam Pipe 3 Drainage Class: Poorly drained Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-9 A 10 YR 412 10YR 5/1 C,C,F 9-18 9 10YR 4/2 10YR 5/3 C, C, D Clay Loam Cary Loam Hydric Soil Indicators: Histosol Histic Epipedon Sultidic Odor Probable Aquic Moisture Regime X Reducing Conditions Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): Mottles and reducing conditions are hydric soli Indicators. Listed on Local Hydric Soils List _ Listed on State Hydric Soils List _ Listed on National Hydric Soils List Aquic Moisture Regime Organic Streaking in Sandy Soils X Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes X No Yes X No Yes X No Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): All three criteria are present. The sample location is within a wetland. Yes X No Parametrix Data Plot #: Gpipe 1-1.1 Wetland: Gilliam Pipe 141 WETLAND DETERMINATION (Modified from: 1987 ACOS Wetlands Delineation Manual) Project/Site: Tukwilla Regional Detention Date: 7/6/2006 Applicant/Owner: Sound Transit Investigator: WJK County: King State: WA ❑ 1987 Method ❑ 1989 Method © 1997 WA St. Method Do Normal Circumstances exist on the site? Yes X No Is the site significantly disturbed (Atypical Situation)? Yes No X Is the area a potential Problem Area? Yes No X Remarks (Explain sample location, disturbances, problem areas): Plot 1-U Is an representiative upland near wetlands Gilliam Pipe 1-3 Community ID: Upland Field Plot ID: 1-U VEGETATION ('Dominant species are checked) Plant Species % Cover Stratum Indicator 1 , Pterldium aquilinum 10 Herb FACU ✓ 2 . Oemleria ceraslformis 20 Shrub FACU • 3 , Rubus amieniacus 50 Shrub FACU ✓ 4 . Acer macrophylium 20 Tree FACU Percent of Dominant Species that are OBL, FACW, or FAC (except FAC-). Include species noted (*) as showing 0 morphological adaptations to wetlands. "T" indicates trace. Remarks (Describe disturbances, relevant local variations, seasonal effects, etc.): None of the dominant plants rooted in the wetland are hydrophytic, therefore, the wetland vegetation criterion is not met. HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake, or Tide Gage Aerial Photograph Other No Recorded Data Available Field Observations: Depth of Surface Water: None (in.) Depth to Free Water In Pit: >18 (in.) Depth to Saturated Soil: >18 (in.) Wetland Hydrology Indicators (Describe in Remarks): Primary Indicators: Inundated Saturated in Upper 12 Inches Saturated in Upper 18 inches (1989 method only) Water Marks Drift Lines Sediment Deposits Drainage Pattems in Wetlands Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 inches Water -Stained Leaves Local Soil Survey Data Other (Explain in Remarks) Remarks (As relevant, describe recent precipitation, hydrologic modifications, local variations, etc.): Wetland hydrology is not present. Pa rametrix Project/Site: Tukwilla Regional Detention SOIL Soil Survey Data: Map Unit Name: Urban land Taxonomy (Subgroup): N/A Date: 7/6/2006 Profile Description: Depth Horizon Matrix Color Mottle Color (Inches) Designation (Munsell Moist) (Munsell Moist) Data Plot #: Wetland: Gpipe 1-U Gilliam Pipe 1-U Drainage Class: excessively drained Field Observations Confirm Mapped Type? Yes No X NA Mottle Texture, Concretions, Abundance/Contrast Rhizospheres, etc. 0-15 A 10YR 3/3 Loam Hydric Soil Indicators: Histosol Histic Epipedon Sulfldic Odor Probable Aquic Moisture Regime Reducing Conditions Gleyed or Low-Chroma Colors High Organic Content in Surface Layer Remarks (Describe soil disturbances, local variations, etc.): The color of the soil matrix is not indicitive of hydric soli. Listed on Local Hydric Solis List Listed on State Hydric Soils List Listed on National Hydric Soils List Aquic Moisture Regime Organic Streaking in Sandy Soils Mottles Other (Explain in Remarks) WETLAND DETERMINATION Hydrophytic Vegetation Present? Hydric Soils Present? Wetland Hydrology Present? Yes Yes Yes No X No X No X Is this Sampling Point Within a Wetland? Remarks (If applicable, explain any differences between 1987 and 1989 delineation results): Wetland vegetation, hydrology, and soils are absent. This sample area is not within a wetland. Yes No X . . DATA FORI'I 1 (Revised) • Routine Wetland Determination (WA S tate Wetland Delineation Manual or 1987 Corps S'i'etland Delineation Manual) AP -APS we -l0.K.01 GJef`— weilawil /1'1 IProject/Site; ,N(< t<fj/.t" 4(Date: 1 Applicant/owner: Soul I r°"sL• { ( /.• Investigator(s):' *'•; Itil(11 . 1 /JV,A ' 61.15-t- . • ' . . 5.(7. 02 County: It, Ccu-A- y, State: (.1/4"V SiIYR:$t,. 4/ ot2/f23Np/I" • ... Community ID:. • Transect ID: 4I Sa l P: Plot ID: we t(0,4xplahation Do Normal Circumstances exist on the site? . . . .yes no. : s the site significantly disturbed (atypical situation)? yes the area a potential Problem Area? yes no of atypical or problem area: 1 VEGETATION (For strata, indicate T= tree; S = shrub; H = herb; V = vine) , ' Stratum • % cover Indicator Dominant Plant Species Stratum % cover , • Indicator ominant Plant Species tir L5 � FA c cr 5 � � r° -S Katt. 7 5 ✓ PAC + • otomy„ oit(aw.(A. 4 5 FAC ycr�citon.-• S�`rpaa_fir: vim` •of urw! pptt•• hi O�3L . • Fdi IN e�t,K-I�'eM+ienq • 1' 4I" l )0 FA C... 6LG 1140s4.001cmluS f•rporC N • ..So F/464,1- . • . • YDROPHYTIC VEGETATION icof dominants OBL, FACW, heck all indicators that apply fisual observation of plant species iiareas of prolonged inupdation/saturationWetland orphological adaptations Technical Literature INDICATORS 8: FAC 7°6,v .S-0/.2 Physiological/reproductive Personal o r� :f �_ - adaptations plant database knowledge of regional plant communities • (explain) . & explain growing below:• in Other ydrophytic vegetation present? , esno ationale fat-decision/Remarks: jIYDROLOGY s it the growing season? used on: • soil temp 0 (record temp no ' t • • Water Marks: e no on iftave4-- . Sediment Deposits: .yes - r Drift Lines: yes C) Drainage Patterns: no other (explain) • Dept. of inundation: • ��epth to free water in pit: Depth to saturated soil: '' inches • Oxidized Root (live roots) Channels <12 in. yes Local Soil Survey; yes 0 inches FAC Neutral: es no • Water -stained Leaves 6 no 2- inches heck all that apply & explain stream, Lake or gage data: kerial photographs: below: • • Other (explain): Other: Wetland hydrology present? 2ationale for decision/Remarks: • no 1-17 Gta.�fi ! `•�''•~` SOILS Map Unit Name (Series & Phase) Taxonomy (subgroup) Drainage Class i1!/i�'" Field observations confirm Yes No maimed me? r Profile Description Depth • Horizon , ; (inches) i.Matrix color• (Munsell moist} Mottle colors (Munsell moist) Mottle abundance size & contrast Texture, concretions, •structure, etc. • Q - q 4 Cc, .4y Clay, Ioak, • 6417 LC /56. g- 1G Drawing of soil , profile '••• (match description,) Hydric Soil Indicators: (check all that apply) Histosol Histic Epipedon Sulfidic Odor ✓ Aquic Moisture Regime Reducing Conditions •% Gleyed or Low -China Colors Hydric soils present?. s3 no Rationale for decision/Remarks: (,..) ,'t'�,'^ • c c ruck. — • • Concretions.. High Organic Content in Surface Layer of Sandy Soils Organic Streaking in Sandy Soils. Listed on Local Hydric•Soils List 7 Listed on National Hydric.Soils List Other (explain in remarks) srtovk4kt tee, Wetland Determination (circle) Hydrophytic vegetation present? Hydric soils present? Wetland' hydrology present? • Rationale/Rerriarks: l/ I no no Is the sampling point / •no no within a wetland? NOTES: . DATA FORM i (Revised) • Routine Wetland Determination (WA,State Wetland Delineation Manual or. 1987 Corns Wetland Delineation Manual) 5a ���lawc� We• f.4 //'/ (A -12-5Z) ✓t (aw t IA t !rojewSite;L. Ltjk* 5 mt..) I investigators):' Jr �if�� 4 • rdrn5c F • � c•-iF jam..• Date: 5-�� V ipplicant/owner: County: K"� Coy v (-� State: wAt • `t SIIYR:..Silky a 3/ 31'V Ift . • • o Normal Circumstances exist on the site? yes no. ationale for decision/Remarks: • • /op 5a P,4-6 c,.)— d6—/ •. t'YDROLOGY - . it the growing season? Cl no ' Water Marks: yes 0 on Sediment Deposits: .yes ' prt5 ) l/ on: • soil temp (record temp 1 Drift Lines: yes 6 Drainage Patterns: yes 0 lased Pi-- other (explain) /v2a.tcL. _. Oa r , 14 Dept. of inundation: inches Oxidized Root (live roots) Local Soil Survey: yes 6 Channels <l2 in. yes n ilDepth to free water in pit: inches FAC Neutral: yes 0' Water -stained Leaves yes 9 Depth to saturated soil: inches heck all that apply & explain below: tream, Lake or gage data: • Other (explain).: kenal photographs: Other: • Wetland hydrology present? ationale for decision/Remarks: /va 4.(.10r.ro(01l c Yes f t cc- /'-ar7 'I Map Unit Narne (.1( ric, am...._ 1o, tik rde: . (Series & Phase) Taxonomy (subgroup) • ( Profile Description , Drainage Class i/V/k. • Field observations confirm Ye s No mapped type? Depth (inches) Horizon Matrix coldr' • (Munsell moist) Mottle colors (Munsell moist) Mottle abundance Az contrast Di o A /0 YA 3/t( Texture, Concretions, Drawing of soil etc, prOfild (match.deSaiiption) 5" /a414, Hydric Soil Indicators: (check all that apply) Histosol • Histic Epipedon Sulfidic Odor Aquic Moisture Regime Reducing Conditions Gleyed or Low-Chroma Colors Hydric soils present? yes Rationale for decision/Remarks: sb151 • Concretions - • • • High Organic Content in Surface Layer of Sandy Soils Organic Streaking in:Sandy Soils Listed on Local Hydric'Soils List 7' Listed on National Hydric Soils List Other (explain in remarks) Wetland Determination (circle) • Hydrophytic vegetation present? Hydric soils present? Wetland hydrcilocry ,present? • -AP . yes . Is the sampling point yes 0 within a wetland? Yes 'C). Rationale/Rerriarks: 041/ bIJ . • NOTESi OCT 2 5 1006 CITY OF TUKWILA ROE►QED DEVELa T SPECIAL Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX (206) 431-3665 PERMISSION E-mail: tukplan@ci.tukwila.wa.us DIRECTOR APPLICATION FOR STAFF USE ONLY Permits Plus Type: P -SP Planner: File Number: L 0 & -- civ cD Application Complete (Date: ) Project File Number: Application Incomplete (Date: ) Other File Numbers: NAME OF PROJECT/DEVELOPMENT: SOUTHCENTER BLVD IMPROVEMENTS LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. Project is begins at 32nd Avenue S on S. 154th Street and extends along Southcenter Blvd to just beyond 51st Avenue S. LIST ALL TAX LOT NUMBERS (this information may be found on your tax statement). SEE ATTACHED LIST AND SHEETS R402RPO 1 THROUGH R402RP 12 AND w40-RP0 1. DEVELOPMENT COORDINATOR : The individual who: • has decision making authority on behalf of the owner/applicant in meetings with City staff, • has full responsibility for identifying and satisfying all relevant and sometimes overlapping development standards, and • is the primary contact with the City to whom all notices and reports will be sent. Name: Chris Townsend, Senior Environmental Planner Address: 401 S. Jackson, Seattle WA 98104 Phone: 206-398-5135 FAX: 206-398-5222 E-mail: townsendc@soundtransit.org Signature: Date: /0 Z3/o6, October 23, 2006 COMPLETE APPLICATION CHECKLIST The materials listed below must be submitted with your application unless specifically waived in writing by the Public Works Department and the Depaitment of Community Development. Please contact each Depaitnient if you feel that certain items are not applicable to your project and should be waived. Application review will not begin until it is determined to be complete. ADDITIONAL MATERIALS MAY BE REQUIRED. The initial application materials allow project review to begin and vest the applicant's rights. However, the City may require additional information as needed to establish consistency with development standards. City staff are available to answer questions about application materials at 206-431-3670 (Department of Community Development) and 206-433-0179 (Department of Public Works). Check items submitted with application Information Required. May be an, a in unusual eases, upon approval of both Publiand Plan g APPLICATION MATERIALS: X 1. Application Checklist one (1) copy, indicating items submitted with application. X 2. Permit Fee (LDR = $225, Other zones = $340). X 3. Written description of the project, the deviation being requested and response to the applicable decision criteria. ZONING CODE PARKING DEVIATION 4. A complete description of the proposed construction relative to parking areas, and all supporting agreements. 5. Dimensional site plan(s) to demonstrate parking area consistent with Zoning Code requirements. 6. Parking studies as needed to demonstrate adequate parking is provided. LANDSCAPE DEVIATION 7. Landscape plan — two (2) copies showing size and species of existing and proposed plant materials, required perimeter landscape types, parking areas, buildings, walkways, transit facilities, property lines, dimensions and area of planting beds and any calculations necessary to demonstrate compliance with review criteria. SENSITIVE AREA ORDINANCE DEVIATIONS X 8. Site Plan — two (2) copies showing all buildings, parking areas, walkways, property lines, planting areas, sensitive areas, their buffers and setbacks. X 9. Sensitive area studies and enhancement plans to justify a requested buffer or setback reduction and demonstrate that the reduction will not result in a direct or indirect short-term or long-term adverse impact to the sensitive area per TMC 18.45.090 D. SIGN CODE APPROVAL/DEVIATION 10. Complete "Permanent Sign Permit Application" with all supporting materials and fees ($115). 11. The following information should be given on the plans: North arrow, title, scale and date; October 23, 2006 Check items submitted with application Information Rxyuired. May be waive in unusual cases, upon approval of both Public Works and Planning Vicinity map showing location and names of adjacent roads; Property lines; Locations of all buildings on site; Dimensioned elevations of building drawn to scale (for wall signs); Elevations, dimensions and materials of proposed sign(s) including advertising copy; Color elevation of proposed sign. CARGO CONTAINER APPROVAL 12. Site plan showing the location of the container(s) in relationship to parking areas, property lines, buildings, streets, trails, landscape areas and setbacks. 13. Description of the proposed screening. 14. Dimensions of proposed cargo container. SINGLE -FAMILY DESIGN STANDARD EXCEPTIONS 15. Dimensioned and scalable building elevations with keyed colors and materials. 16. The site plan must include a graphic scale, north arrow, proposed house footprint, any existing structures, lot lines, setbacks, adjacent streets, driveways, parking areas, any sensitive areas and any fences, rockeries or retaining walls. October 23, 2006 –X • ADDITIONAL AREA OF `TEMPORARY DISTURBANCE „ -.REPLANTED WITH ENHANCED FOREST WETLAND BUFFER MIX (541 SF) ADDITIONAL AREA OF PERMANENT 'BUFFER IMPACTS DUE TO RIP -RAP (1,340 SF) `-TEMPORARY AREA OF ti , •-BUFFER IMPACTS ' . HAVE BECOME PERMANENT IMPACTS N. ``1702 SF) r;' 10 0 10 SCALE 1' = 20' —X3. 20 EXTENTS OF VEGETATION ' "DISTURBANCE GILLIAM CREEK BUFFER AREA OF TEMPORARY BUFFER IMPACTS INCLUDED IN PERMIT (1,204 SF). ----1 � - • % • TEMPORARY AREA OF DISTURBANCE REPLANTED WITH RIPARIAN ENHANCEMENT MIX (426 SF) / f DATUM: NAVD-88 TEMPORARY AREA OF BUFFER IMPACTS HAVE 4 / // BECOME PERMANENT�/ IMPACTS (920 SF) • • ,EXTENTS OF VEGETATION I / e ISTURBANCE /ADDITIONALfAREAOF PERMANENT BUFFER IMPACTS DUE TO RIP -RAP , (1,847 SF) 'i(//1/40' •,//f. ,y /,/`!' ',/%/�%!,// ,�� it ? / /,, •t / ,r/yv/. .'` . / AREA OF TEMPORARY BUFFER IMPACTS REPLANTED AS ENHANCED FOREST WETLAND BUFFER (771 SF) f I�IAKEROBIN _J..... Sheet Setae WA 96144 208.979.1522 ww.Wakera6MLC.m , ACTUAL BUFFER IMPACTS AT THE RDF LINK LIGHT RAIL PROJECT SOUTH CORRIDOR Project Location: TUKWILA, KING COUNTY, WASHINGTON SCALE: 1 "=20' FIGURE; 1 of 2 8 I� N 215 �\R40 44+00 ^� -EXTENTS OF --PLANT AREA ABOVE 173 WITH — —ENHANCED FOREST WETLAND �— —VEGETATION --BUFFER MIX (1,431 SF) —DISTURBANCE —92 SQUARE FEET OF —ADDITIONAL PERMANENT —'IMPACTS TO BUFFER. 200 / ==�,, ' fi// ., !jl 1" I %/ 1 7/ V v–v v -v -v • --g10�,Z_y—'1CTy-y-y""" V V\ -y-v-v-v-V-- V QV V V 9„ v _v___vv '-v-v-v--vvvvvv • v-vv-v—vv.77-v v _v`b --V— -V v v" v V V v -- vvbv\v vv\vvvv vv`Qv vv v • l4IIII•a \t � i \ /j / 1 i\ ) // 1 I (L\\\ \ \ it r,. ' � 1 i t 1 , S f/` /7/7"�'r\ \ i / "/".7,-••-•>2 .„--;.;%.' „.-•-''''\ \ ,• ) j.z1.,, /.. ,,,,,,,,,,/ .r,,•7 , „/;/„.4/2...;„.„.„„..---••,•-•_„.„,...„.•,"-- „...--;,........ .......,..„. 7. 7 • • / i /PLANTAR E 190 WITH ---" J„„ "," ��j //1. / ,i ! ENHANCED ST WETLAND -/ / / 1 /7/ // ••• -, �olp BUFFER ' (27 i' / / /' / / ' //JJ �. / r� / , / • / - / , F) DATUM: NAVD-88 P`O. Box 3091 Seattle WA 98105 2450 South Wing Street Seattle WA 98144 208.979.1512 www.Wakmobint1C.mm AKEROBIN Ir. REVISED PLANTING 44+50 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR REGIONAL DETENTION FACILITY Applicant: Project Location: TUKWILA, KING COUNTY, WASHINGTON SCALE 1" = 20' SHEET 2 of 2 Resoled HA_2234N IG-vavo Unnsoled LISCALE 1.I to N at %c 3 : wongk2 OEW3060A W 4.. • w • N • EXISTING TREE TO BE FINISH GRADE VARIES. 3H: 1 V MAX. (SEE DWG P762CG02) 2" MULCH TOPSOIL • X vMULCH WALLS AND � �� ��� J ! "X" INCHES DIA. PROTECTED TREE PROTECTION FENCING NOTE• 1. DETAIL DOES NOT APPLY WITHIN MITIGATION PLANTING AREAS. LANDSCAPE FILTER FABRIC, MIRAFI 140 \ \\ #3 #4 (SEE DWG P762SW01 AND DETAIL B/P762SD02) WASHED PEA GRAVEL 4" PERF PIPE, SEE DWG P762UCO2 / / / V\/ \ / / \/\/\/\/\/\ \\/\\/\\/\/\/\/ _ _ -- _ _� '—� 2. CRITICAL ROOT ZONE (CRZ): l-- THE TREE PROTECTION FENCE PROTECTHETEE SHAS EQUALTF. RADIUS FOR EVERY 1 IN. OF \ \/ \ % I): I' • • • .. • 0.00' CRITICAL DETAIL ROOT ZONE 11 TREE TREE DIAMETER. PROTECTION FENCE SECTION DETAIL 10 $OIL PROFILE AT RETAINING WALL SCALE: NOT TO SCALE P762LD22 �/ P762LD22 SCALE: NOT TO SCALE `...." TREE STAKING TIES CURB & GUTTER ACP ROADWAY EXISTING SOIL WITHIN MEDIAN REMOVED TO 4' DEPTH, AND REPLACED WITH TOPSOIL. MULCH ROWN LANTING BED MAX. "P ABOVE TOP OF t CURB / �/ '4 6"MAX i ___ �_ (1) 2" DIA. W000 STAKE DRIVEN TO REFUSAL. SECURE TO TREE WITH (2) 2" DIA WOOD STAKE, FINISH LANDSCAPE GRADE PLASTIC TREE TIE; (2) WOOD STAKES FOR TREES OVER 10' HL POINT TOP 1/3 ALIGN STAKES TO RESPOND TO PREVAILING WINDS. / TREE ROOTBALL. SET ROOT _ SECOND UFT OF - TOPSOIL OF STAKE TOWARD �% - EXISTING SUBGRADE PREVAILING WIND. SET ROOTBALL CROWN 1" ABOVE CROWN 1" ABOVE FINISH I,� GRADE. • FIRST LIFT OFINTO TOPSOIL .2" FINISH GRADE MULCH: 2" DEPTH \ r ^"``"'""'"''' SUBGRADE ./. NOTE: 3" MULCH DEPTH IN ALL ;' ��' MULCH: 2" DEPTH '1 yIIT1GATION PLANTINGS \\//\\//\\//\\//\\/ //, UNDISTURBED e:d >� MITIGATION PLANTINGS NOTE: 3" MULCH DEPTH IN ALL �i ALLOW 2" CLEAR FROM TRUNK j\\//\\�\\///\/ -.: SUBGRADE ., ' {-T' ALLOW 2` CLEAR FROM TRUNK /. fJ TREE �,%: N N I FINISH GRADE 3" HEIGHT SOIL SAUCER. r1 �(r : 1f �( I=III=III=I 1 HI 1 HEIGHT .. FINISH GRADE ,��, _ �� ���_ ����� � INSTALL AT EDGE OF PLANTING 3” HEIGHT SOIL SAUCER, _„ "' ��� PIT ;7-111=411a117111111; NOTES: __ ��� IIIIINTII`- 1I" �� A I ' IMAX. `..'-r i -.: 1'■�1 TOPSOIL BACKFILL _ _ 1, THIS DETAIL IS APPLICBLE TO ALL IRRIGATED & PLANTED AREAS. i r ✓� SECTION DETAIL �-- WIDTH VARIES �� .` • ✓r`��`K•-``�' ��%'k�i •l•,-,,`.•4.-\ �, 6., 4% •.�.� l •A n MEDIAN PLANTING SECTION 1 / Iii al TOPSOIL BACKFILL I '� SCARIFY SUBGRADE EXCEPT IN WETLAND & STREAM BUFFER MITIGATION AREAS, IMAX.' I "111111,1,.��� z N 'r I1 la 1-1- _I I - -EMOVE 2. FINISH GRADE IS TOP OF CURBS & SIDEWALKS. SCARIFY SUBGRADE BINDING FROM TRUNK, PULL TO 3. COMPACT SUBGRADE & TOPSOIL TO A MAXIMUM DENSITY OF BSH5% IN ALL �• , II'.PLANTED SECTION I = '�1 REMOVE BINDING FROM TRUNK, ROOTBALL.EXPOSE NOBACK BURLAP BOF URLAPTO AREAS. IF COMPACTION EXCEEDS BSR CONTRACTOR SHALL RIP OR%! REMOVE BURLAP FROM TOP SECTION O SURFACE AFTER BACKFILUNG PLOW SUBGRADE TO A 12" DEPTH, MIN 2x WIDTH 2/3 OF BALLLWIDTH OFF ROOOTBA OF ROOTBALL ROOTBALL. DETAIL EVERGREEN TREE PLANTING DETAIL n DECIDUOUS TREE PLANTING DETAIL n TYPICAL TOPSOIL SCALE: NOT TO SCALE P762LD22 SCALE: NOT TO SCALE P762LD22 SCALE: NOT TO SCALE P762LD22 SCALE: NOT TO SCALE P762LD22 NOTES: 5-0" 5'-0" PLANT SHRUBS AT 1" ABOVE LEVEL GROWN IN NURSERY. PLANT GROUNOCOVERS AT LEVEL GROWN AT NURSERY. T DEPTH NOTE:: 3"" MULCH DEPTH IN ALL—�� TYP. AT PLANTS GROUNDCOVER PLANTED NURSERY LEVEL (POTTED OR ROOTED CUTTINGS) MIN. 2" MULCHE. 1. ROOT BARRIERS SHALL BE INSTALLED AS SHOWN WHEREVER PAVEMENT OR CURB IS WITHIN 6' OF 2E FOR STAKING Allil Ih !LAI BACK OF CURBNO PROPOSED TREE MITIGATION PLANTINGS FINISH GRADE LOCATION SEE DETAIL ROOTBALL ALLOW 2" CLEAR FROM TRUNK /STEM FINISH GRADE SCARIFIED SUBGRADE — q r; ' r s , r,t-� ' y\\\\\\\\\\\ r; • t.' ^j` re'l * 1 �� P762LD22 \� 2" MULCH ROOT BARRIER, TOP EDGE 2" BELOW FINISH W a > ri STAKING PARALLEL TO CURB UNE, TYP. O O ROOT BARRIER SIDEWALK N.?" �6, _.\\ L:�\\\\ CURB &GUTTER \\\\\\\\\\\\\\\\\\�\\\\\\\\\\\\\\\\\ •= TOP SOIL oma,' •[ I I; GRADE �' _ t ' ' a I �.''• -�I 7t SCARIFY SUBGRADE `t' ' + : `..--.— TOP SOIL ACP ROADWAY 6" MAX ! ' ' __ IL '' � wkray . : I REMOVE BINDING FROM lI= � II � Ir1L_�1� =II m I -ll Ji (I•- I=fl1- TRUNK, PULL BURLAP BACK SECTION I I I I ~ la I .- = I 11=H=t 1— — m ,%- ��� . ft�11t ; KREPS • 2 uY.een e . LLSGLE 1-L • 3 • 4 • 5 Env (Lig cpsp 3 d�.LV 0 a,a t'0 01/24/08 No. Date By tl�l \\\ o /fes' GILLIAMiCREEIC Q NORTH 0 I BUTARN— j O �_- _ — • 0 / 1 _.. O xT• . - /�.r�` '' y7';•' . T ° fj l/� ..fie '; ,Z:A'‘7..-.-'3._.:-...- rokp- REVEGETATION PLANTING SCHEDULE (FOR THIS SHEET ONLY): NOTES SYMBOL X QTY. COMMON NAME 07. 0 1 �_ r.te te •-s M^y • yA Vai w\ •ItoXpn�prbA 'p:a pppA.•e..pp \ 4YAI 'A p'+pip•A •+'pp� pppyp�p &p'• --.. Wait=p>p. eilytaoc,sp p' \ �•{ A 1 Fp wzi •N ?Ct'p�nyp` ►pep., A�p •�. a ' k. "ppjp w yawJ i 11 1 ,. oprW• A'p°p �'AT^" t �&W. • -•©•>•r • WETLAND/STREAM BUFFER _—r P.4 -5 N // i , iy x,14 PROPOSED 96'i FLOW • CONTROL STRUcTUHe dr 111 ter /40 J BOTANICAL NAME AREA 6 - ENHANCED WETLAND 4% •4 fj WESTERN�p RE" CEDAR 4% 108. 'tel WESTERN HEMLOCK 4% .1.08. 2Z. DOUGLAS F I R 4% -882 et VINE MAPLE 4%4232- t* OCEANSPRAY 80% x690 2.1(s8 SWORD FERN RIPARIAN ENHANCEMENT gFER THUJA PLICATA TSUGA HETEROPHYLLA PSEUDOTSUGA MENSIESII AGER CIRCINATUM HOLODISCUS DISCOLOR POLYSTICUM MUNITUM 33% +OA 1.'. RED -OS I ER DOGWOOD 33% 460 "....11 PACIFIC WILLOW 33% 360 7.11 S I TKA WILLOW EtALT CORNUS SERICEA SALIX LUCIDA SALIX SITCHENSIS NOTES; SIZE SPACING Crnovta l io .i s eth 311) 3'-4', CONTAINER 10' O.C. 3'-4', CONTAINER 10' O.C. 3'-4', CONTAINER 10' O.C. 2 GAL. 8' 0.C. 2, GAL. 4' O.C. 1 GAL. 3' O.C. SEE NOTE I. L I VE STAKE, 1/2" D I A., 4'L 3' O.C. SEE NOTE I . LIVE STAKE, 1/2" D 1A.. 4'L 2' O.C. SEE NOTE I . LIVE STAKE, 1 /2" D 1 A., 4'L 2' 0.C. SEE NOTE I . 1. WHEN POSSIBLE, CLUSTER SHRUB SPECIES WITH AN AVERAGE OF 12 I ND I V I DUAL PLANTS, (M I N. 7, MAX. 21), WHEN SHOWN IN A MIX. 2. SEE DWG P762LD22 FOR PLANTING DETAILS. 3. DO NOT APPLY FERTILIZERS IN ANY PLANTINGS WITHIN WETLAND AND STREAM BUFFER MITIGATION PLANTING AREAS. UPLAND PLANTINGS OUTSIDE OF WETLAND AND STREAM BUFFER MITIGATION PLANTING AREA SHALL RECEIVE FERTILIZER PER SPECS. 4. APPLY MINIMUM 3 INCHES OF MULCH OVER ALL TREES AND SHRUB PLANT I NG. MULCH R 1 NGS SHALL BE MINIMUM 2 -FOOT DIAMETER FOR SHRUBS, AND MINIMUM 4 -FOOT DIAMETER FOR TREES. 5. REMOVE BLACKBERRY AND OTHER INVASIVES IN RIPARIAN ENHANCEMENT ZONE AND ENHANCED FORESTED BUFFER. ALL BLACKBERRIES SHALL BE HAND GRUBBED OUT OF THE ENHANCED FORESTED WETLAND BUFFER AREA. NO MACHINERY IS ALLOWED. REMOVE TO OFF -S I TE LOCATION OR ON-SITE COMPOSTING MAY BE ALLOWED 1F A PLAN 1S PROV I DED, REVIEWED AND APPROVED PRIOR TO COMMENCING WITH ACTIVITIES. (PER MITI GAT I ON PLAN 5.2.3 (PG 58:6). KEY TO SYMBOLS C1-42) LIGHT POLE ® RETAINING WALL DRAWING KEY. Rr-"Cfr'g*y ? •., wd t.� i a s. 9V `JUN 2 0109 . COMMUN.T( DEVELOPYx.EAT 30 15 0 30 60 SCALE IN FEET Designed By. J. YAMAGUCHI Drava By. A. BATEMAN Chedced By. K. NAKANO ISSUED FOR CONSTRUCTION Chic. App• Revisions Approved By. J YAMAGUCHI IOW Of IPAIGNOION HEWITT ARCHITECTS SubmRted: D. HEWITT Date: NAKANOASSOCIATESuc ZaOeuDe Arilhto Z3/10 Soea&fame !el 20629193ri SsaYWA 95121 62062!2 NO wwwadomsseselstracom 01/24/08 Approved: SOUNDTRANSIT R. KEMPICES Date: Seater' I'=20' Filename: S59_R402LP15.dwg Contract No.: C 759 Date: 01/24/08 11/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD GILLIUM CREEK • WETLAND, STREAM, AND BUFFER PLANTING PLAN Drawing No.: R402LPI5` Sheet No.:: Rev.: 333 0 S59_124021/1 S5SLR402SW =LRAMS X555nr Mika. ds6di d58W^ `5595° • r559au d19VC dog IG 9afw REG-ur SS5.1.57_5P S54.RIOxA 859R402� S5Q R4021P dSed d59S. 2 LirroMd L /SCALE I_1 — \-115 1 / I— I ' • — AL / r //I / 1=— /,/1i — • •� / . :1 1 S60 Apo 3 l'''AP Q f k MPlvr. . rI' I ntaT0firIP • 0 •I..w•w.w•A•A+.t tAt.IAta.t t.��7 ��AT��.t..� ► V V V 7 7. 7 7, .ArAtATA•OAt► _ •� 18".g".+"MAPLES 71 P� `• ,, _•GTi7ATAT T T • 're! A�.T V.V.—.—. VV. j 7LiAl 4•3:ATAYA-I-•-AV• :..AWSATAT. TATA hTA•ATATATA PI'?STA rATOQA•A!'A :A.ATAT..A.-.TA.._, ATATATA.,..A.A. 'ATA•,. Ap 2-Bt(oL M AVA•A4:.i.2=;.740yA•u•g4A•A.A.AVA•A.A•,SWWA .\ A A A A A•A•�!A•w+ A A A AA A AA A A A A.L;:a. / - OP IN C DESSIWO •. ' ` \\.�/ FA / 1 ST I G 48" P0) l�� S 1` e? � „ger."' 1 I �. \ . 1•.\ \ ems_-- — \� \ ' \\ OHWM /J GILLIAM CREEK MAIN STREAM j/r E 7 D'80 i /// /j/j,/:IS// \\ \ \` ---011 ------S% \'- \\ �\`—\\ S11��� = ---0Z1 . - / • ./ / .'..•••••• / • _6-- MAPLES/ILBERT --- R.O.W. PPR ..•'j P0 0 APO TrDt%) L. "Ws MPO 9144 HU •' %MP OCT - • • VVV VVVVVVV WETLAND/STREAM BUFFER REVEGETATION PLANTING SCHEDULE (FOR THIS SHEET ONLY): SPACING NOTES SYMBOL X QTY. COMMON NAME RESTORED UPLAND BUFFER BOTANICAL NAME SIZE A•A•A•A• A•A•A•A• .ToATA• 4% A10 BIG LEAF MAPLE ACER MACROPHYLLUM 3254SNOWBERRY SYMPHORICARPLIS ALBA 3254 OW OREGON GRAPE MAHONIA NERVOSA 32% pqSWORD FERN POLYST I CHIJMI MUNITUM 45 LBS. UPLAND SEED MIX (TOTAL AREA 4525 SF) UPLAND SEED MIX; PERCENTAGE COMMON NAME. 10 LBS. PER 1000 SF. 01/24/08 No. Date Br ChIL. 'App. IOX COLONIAL BENTGRASS 40X PERENNIAL RYEGRASS 40X CREEPING RED FESCUE IOX WHITE CLOVER ISSUED FOR CONSTRUCTION Revisions BOTANICAL NAME 3'-4', CONTA I NER 2 GAL 2 GAL. I GAL. AGROSITIS CAPILLARIES LOL I LAd PERENNE FESTUCA RUBRA TRIFOL IUM REPENS Designed By. J. YAMAGUCH I Drawn By A. BATEMAN Checked By. K. NAKANO • Approved By. J. YAMAGUCH I I O' O.C. 4' 0.C. 3' 0.C. 3' O.C. o CLUSTER. SEE NOTE I. CLUSTER, SEE NOTE I. CLUSTER, SEE NOTE I. HEWITT ARCHITECTS NOTES; 1. WHEN POSSIBLE. CLUSTER SHRUB SPECIES WITH AN AVERAGE OF 12 I ND I V I DUAL PLANTS, (M I N. 7, MAX. 2I ). WHEN SHOWN IN A MI X. 2. SEE DWG P762LD22 FOR PLANTING DETA I LS. 3. DO NOT APPLY FERTILIZERS IN ANY PLANTINGS WITHIN WETLAND AND STREAM BUFFER MITIGATION PLANTING AREAS. UPLAND PLANTINGS OUTSIDE OF WETLAND AND STREAM BUFFER MITIGATION PLANTING AREA SHALL RECEIVE FERTILIZER PER SPECS. 4. APPLY MINIMUM 3 INCHES OF MULCH OVER ALL TREES AND SHRUB PLANTING. MULCH RINGS SHALL BE MINIMUM 2—FOOT DIAMETER FOR SHRUBS. AND MINIMUM 4—FOOT DIAMETER FOR TREES. 5. DO NOT PLANT TREES WITHIN 5' OF STORM DRA I N. 6. ALL PLANTINGS IN STREAM & WETLAND BUFFER MITIGATION PLANTING AREAS SHALL BE PROCURED AND INSTALLED BETWEEN OCTOBER AND MARCH. NAKANOASSOQATffiuc Lodscept M 2300 &math A•ar td 200 7921392 goalie WA 90121 Ac 106 2221640 •rwwigmasseodueete SOUNDTRANSIT Date: Submitted: D. HEWITT Date: 01/24/08 Approved: R. KEMPKES Scde:- I "=20' Filename: S59_R402LP I 6.DWG Contract No.: C 759 01/24/08 Date: 11/15/06 KEY TO SYMBOLS CHO LIGHT POLE RETAINING WALL COLUMN 20 IO 0 20 . 40 SCALE IN FEET r,17.°77:31? " ---r) �G `JUN 2 6 2009' DRAWING KEY• 007,1,6 iTy 07,1, iiTYL Ac-zutIL-r. LINK L I.GHT RAIL PROJECT SOUTH CORR IDOR SOUTHCENTER BLVD GILLIUM CREEK STREAM AND BUFFER PLANTING PLAN •Driving No.: R402LPI6 Sheet No.: 334 Rev.: 0 XREFS S59Jt40219 559 R4025W 559_R 40211S X550an X58071 95500 9560,9 !8•G -YY 111 S59JUG2CA 559-R402G. 559 R402LP X58057 859-,402us 0TSCALF 3 4 5 g n 0 �9< .m 3r 0 ± :0 nnnr.�n7nn nnnn(YOU 00-0—ODO REVEGETATION PLANTING SCHEDULE (FOR TH I S SHEET ONLY): SYMBOL % QTY. COMMON NAME BOTANICAL NAME RESTORED FORESTED BUFFER QQ 100% +e- fo RED ALDER 12 LBS. SF) UPLAND SEED TYPE 10 LBS. PER 1000 SF. ALNUS RUBRA UPLAND SEED MIX (TOTAL AREA :1.174 W - D cIJ... V'a WOoD tLk — Sew BE 4'( l Lk - TAi- oc2. 60 G � mix; PERCENTAGE COMMON NAME 10% 40X 40% 10% COLONIAL BENTGRASS PERENNIAL RYEGRASS CREEPING RED FESCUE WHITE CLOVER SIZE SPACING NOTES 3'-4', CONTAINER 10' 0.C. PER- Co'f i2.>r gltAT BOTANICAL NAME AGROSITIS CAPILLARIES LOLIIAI PERENNE FESTUCA RUBRA TRIFOLIUM REPENS 20 10 0 20 40 SCALE IN FEET KEY TO SYMBOLS 0-0 LIGHT POLE RETAINING WALL I. WHEN POSSIBLE, CLUSTER SHRUB SPECIES WITH AN AVERAGE OF 12 INDIVIDUAL PLANTS, (MIN. 7, MAX. 21). 2. SEE DWG P762LD22 FOR PLANTING DETAILS. 3. DO NOT APPLY FERTILIZERS IN ANY PLANTINGS WITHIN WETLAND AND STREAM BUFFER MITIGATION PLANTING AREAS. UPLAND PLANTINGS OUTSIDE OF WETLAND AND STREAM BUFFER MITIGATION PLANTING AREA SHALL RECEIVE FERTILIZER PER SPECS. 4. APPLY MINIMUM 3 INCHES OF MULCH OVER ALL TREES AND SHRUB PLANTING. MULCH RINGS SHALL BE MINIMUM 2 -FOOT DIAMETER FOR SHRUBS, AND MINIMUM 4 -FOOT DIAMETER FOR TREES. DRAWING KEY; LEN. nos•ii..7.111.,117.1111 G'•�. =.« o.� r.. _ to . 'JUN 2 i 2009 COMI ItN:T( DEV EUDP066iT AS -BUIL -1 - Designed BF J. YAMAGUCH I Drawn By. A. BATEMAN Checked By. K. NAKANO 01/24/08 ISSUED FOR CONSTRUCTION No. Date By Chk. App. Revisions Approved By. J. YAMAGUCH 1 WU OF IONIONOTOM w m HEWITT ARCHITECTS NAPANOASSOCIATI3Sur 7300 firma Avenue M306 1939392 5ent& WA 9421 m 206 291960 .ev.,ten.w.mescm 111111 SOUNDTRANSIT Sade: I s=20' Filename: S59_R402LP13.dwg Contract No.: C 759 Submitted: Date: D. HEWITT 01/24/08 Approved: R. KEMPKES Date: 01/24/08 Date: 11/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD G 1 LL I UM CREEK NORTHWEST TR 1 BUTARY NORTHWEST TRIBUTARY STREAM AND BUFFER PLANTING PLAN Drawing No.: R402LP13 Sheet No.: 331 Rev.: 0 3REP'S Reathed Ss51a!_SP S59 R4aalMr Ss9.R402RP S59Jt1a2SW S5&R401wS agent 161_213471 !EG -41Y • S5&.R4a2C1 S59 -17402[Y S59_140.11.r . S59Jt401W h7daSF 359_ 402ur urenAid L!S 2 I. WHEN POSSIBLE, CLUSTER SHRUB SPECIES WITH AN AVERAGE • OF 12 I ND I V I DUAL PLANTS, (MIN. 7. MAX. 21). WHEN SHOWN INA MIX. 2. SEE DWG P762LD22 FOR PLANTING DETAILS. 3. DO NOT APPLY FERTILIZERS IN ANY PLANTINGS WITHIN WETLAND AND STREAM BUFFER MITIGATION PLANTING AREAS. UPLAND PLANTINGS OUTSIDE OF WETLAND AND STREAM BUFFER MITIGATION PLANTING AREA SHALL RECEIVE FERTILIZER PER SPECS. 4. APPLY MINIMUM 3 INCHES OF MULCH OVER ALL TREES AND SHRUB PLANTING. MULCH RINGS SHALL BE MINIMUM 2—FOOT DIAMETER FOR SHRUBS, AND MINIMUM 4—FOOT DIAMETER FOR TREES. • 3 • REVEGETATION PLANTING SCHEDULE (FOR THIS SHEET ONLY): • ALNUS RUBRA HOLODISCUS DISCOLOR SYMPHORICARPUS ALBA ROSA NUTKANA 5 INSTALL 45 WILLOW LIVE STAKES IN RIP RAP AT EACH OUTFALL LOCATI COLONIAL BENTGRASS PERENNIAL RYEGRASS CREEPING RED FESCUE WHITE CLOVER AGROSITIS CAPILLARIES LOL I LAA PERENNE FESTUCA RUBRA TRIFOLIIAA REPENS 0 No. 01/24/08 Date By Chk. APO. ISSUED•FOR CONSTRUCTION Revielons Designed By. J. YAMAGUt H I Drawn By. A. BATEMAN Checked By. K. NAKANO Approved By. J. YAMAGUCH I HEWITT ARCHITECTS 111111•10$011 =MIMED NAKANOASSOQATffiuz Iad.eW. MdTheb 2310 Sawa Avow* tel 206 242 9392 Sat& WA 90122 On 266 242 9640 wwwooloorsisetateacom Scale: SOUNDTRANSIT Submitted: Data Approved: Dots I'=20' F9enama S59_R402LP 14.DWG Contract No.: C 759 Data WS 371 D. HEW I TT 01/24/08 R. KEMPKES 01/24/08 11/15/06 LINK LIGHT RAIL PROJECT SOUTH CORR 1 DOR SOUTHCENTER BLVD GILL1 UM •CREEK UNNAMED TR 1 BUTARY STREAM AND BUFFER PLANTING PLAN Drawing No.: R402LP14 Sheet No.: Rev.:. 332 D ?REF'S R°°olwd 1 IG- 22.3414 R£G-r.R St RP 55.. N 559_R102RP X560RX X5603 X56., • 5565,1 Lwe.,a ad 555_r76_CA 559JM02CA_2 L TSCALE i-1 2 • 3 • 4 • 5 0 0 0 n W 0 N Y • p, C n. .. 4c.' 0 N — O O N U O No. Date 1 I5. ACQUISITIONS FOR THE LIGHT RAIL GUIDEWAY ON TUK 135 ARE SHOWN ON PARCEL AL -100 ON THE AIRPORT LINK RIGHT-OF-WAY PLANS, DRAWING S70J.65J2P02 NE 1/4 SE 1/4 SEC 21, T 23 N, R 4 E; W.M. NW 1/4 SW 1/4 SEC 22, T 23 N, R 4 E; W.M. NOTES: 1. THE BASIS OF BEARINGS IS THE WASHINGTON STATE COORDINATE SYSTEM OF 1983, 1991 ADJUSTMENT (NAD83/91). COORDINATES AND LENGTHS ARE REFERENCED TO A LOCAL DATUM PLANE KNOWN AS THE SOUND TRANSIT SOUTH ZONE PROJECT DATUM AND REPRESENT MEASURED GROUND DISTANCES. TO CONVERT TO THE WASHINGTON COORDINATE SYSTEM OF 1983/91, NORTH ZONE, FIRST SUBTRACT 100,000 FROM BOTH THE NORTHING AND EASTING, THEN MULTIPLY THESE COORDINATES AND LENGTHS BY THE COMBINED SCALE FACTOR OF 0.999997515. ALL DISTANCES ARE SHOWN IN UNITS OF U.S. SURVEY FEET. STREET CENTER LINES AND R/W LINES WERE DETERMINED FROM MONUMENTS SURVEYED AS SHOWN AND UTILIZING SUPPORTING INFORMATION FROM ASSESSOR MAPS, PLAT MAPS, HIGHWAY MAPS AND RECORDED SURVEYS. THE MONUMENTS WERE SURVEYED USING RTK-GPS EQUIPMENT WITH AN ACCURACY OF APPROXIMATELY 0.10 FOOT HORIZONTAL AND VERTICAL. 2. THE DETAILED INFORMATION ABOUT THE PROPERTY ACQUISITION IS SHOWN ON THE INDIVIDUAL PARCEL MAPS. 3. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 4. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. 1 R40 11+50 R40 12+00 i 1 30' ,1 w z W J N z* o :n 0 W z 32ND AVE S /' e�x g I i "-EX. 10' ES i . FOR ROAD R TO KING ' COUNTY, R . NO. 7412050 13.-' LEC AND T E ESMT. TO ITY OF SEATTLE AND ELL TEL..1R C. NO. 101 i\ 7602020582. 1..t‘ls., I 37' '- O. .SRP RO S1 P0P� R/W NO.TUK-160 0043000002 UNITED STATES POSTAL SERVICE ►StSt 3U"' Qos-S R40 13+00 S /5477-1 ST R40 14+00 588°17'22"E 721.00' R40 15+00 S88°17'22"E PERMANENT EASEMENT TEMPORARY CONSTRUCTION GUIDEWAY EASEMENT EASEMENT • PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS. I/16TH CORNER R40 12+65.46 N 313469.24 E 1371060.72 b S00°54'53"W 668.64' FROM 1/4 COR. MON PAv D PARKING FEE TAKE To 30' ( ` R40 L NE=I/16TH LINE=STREET R/W Q " 1 � :NT Ai<E 1E 380.87 —'y->' ; - \/ \vi \! Vi V \/` WSDOT AIR SPACE LEASE 1 r- / 75' R/W NO. TUK- 135 ( 0043000405 O J. S. LEE INVESTMENTS LLC 3.0 s. 154 n^is,1 B�- WSDOT TEMPORARY L16HT RAIL GUIDEWAY CONSTRUCTION EASEMENT SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT.s KING CO. RECORDING NO. I 759 TUK-160 0043000002 UNITED STATES POSTAL SERVICE 117,634 353 709 t 763 A 2 759 TUK- 135 0043000405 J. S. LEE INVESTMENT LLC • 53,625 Designed By. M. VANN Drawn By. 0. CABRERA Checked By. E. BONE Dsn. Chk. App. Revisions Approved By. A. MARWAHA 0src ©®N LIN & ASSOCIATES. INC. Consulting Engineers Seattle. Washington Wr SOUNDTPANSIT Scale: I"=20'1 Filename: S59Jt402RP01.dwg Contract No.: C 759 Submitted: Date: Approved: Date: Date: 09/15/06 t1X 10 1n W RECEIVit1J OCT 2 5 2006 COMMUNITY DEVELOPMENT 20 10 0 20 40 SCALE IN FEET LINK LIGHT RAIL PROJECT SOUTH CORR 1 DOR S I54TH STREET R1GHT—OF—WAY PLANS STA R40 11+50 TO STA R40 15+00 Drawing No.: SEE DWG R402RP02 R402RPO 1 Sheet No.: Rev.: 13 0 Resolved ZC-22.3Mi REG -E.$ RI/ eP ss A Ss.._ _CP S5&.R402CA S5&.R4O2RM S59-R402RP xssoxx • x560sr • Lhread ed LTSCALE 1-I 2 • 3 4 • 5 0 0 io 0 3 w 0 0.1 0 a; (�O 0in '1- iiD ON — SEE DWG R402RPOI PAYED PARK INC PdW-T, PAPP' 1 1' ST OFFICE NW 1/4 SW SEC 22, T 23 N, R 4 E; W.M. NOTES: I . SEE DRAWING NUMBER R402RPO1 FOR GENERAL NOTES REGARDING BASIS—OF—BEARINGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR I MPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. t 1 1 P.4VEDI-AR:�% NG ! I 1 1 ^ I 1 ; 1 T� 1 1 f 1 D APD' A61S; i ��'- 3R QMD T� � l ii i , ADAMSI N i j 1 1Sj29 7 pC1l4i '.c. iFW�S . ( R/W NO.TUK-159 ) ( 0043000013 K & S DEVELOPMENTS ILC CURVE DATA NO. A R T L C1 3' 17'00" 1182.50' 33.89' 67.765' C2 7'33'02" 1239.50' 81.79' I63.34' C3 71'35'26" 47.00' 33.89' 58.73' LENGTH DATA LI NOO°54'53"E 2.28' L2 S88° 17'22"E 81.00' L3 N20°07' 1 2"E 56.90' L4 N25'49'SO°E 130.73' CA TE i U JFRC 1C2 SLOPE ESLAT. TO C I REC. NO 1513347 4 T(P S,YiOT, I 1r II 11 II i1 11 11 f tLi Ii ! .p I ! f f I ( i R/ N0.1TUK i 1581 ( 0043000015 K & S DEVELOPMENTS LLC / 5`t. H } P&(YC, 1 :.y •:v.::.0 3' LANE 4lUcT ?URN ri r 3' FUD REBAR/L LS ,R236047 � � f "') I o' / w� ra'/ N r(, 0' i -•-pig ' �i -- 1�--- ��-^^r -_-s �� �� )� � afX yaw - R40 15+00 7 ! R40 I9+86.45 R50 25+46.97 7/ N=273,075.77 E=1,380,390.32 R40 LINE=I/16TH LINE=R/W r r N; 754 SR 5/8 ekf 6 (R/W NO. WSDOT—SR5 I 8-1 WSDOT SOUND TRANSIT PARCEL NO. OWNERS PARCEL AREA FEE TAKE REMAINDER PERMANENT ESMT. TEMP CONST. ESMT. KING CO. RECORDING R/W NO. (TAX ACCOUNT NO) SQ. FT. SQ. FT. SQ. FT. SQ. FT. SQ. FT. NO. I 759 TUK-158 0043000015 K & S DEVELOPMENTS LLC 104,550 5,302 99,248 1,837 2 759 TUK— 159 0043000013 K & S DEVELOPMENTS LLC 77,834 2,204 75,630 941 20 10 0cr 2 Designed By. M. VANN Drown By. H. NOVACEK Checked 8y. E. BONE No. Dote Dan. Chk. App. Revisions Approved 8y. A. MARWAHA PSTC ❑L®L LIN & ASSOCIATES, b1C. Consulting Engineers Seattle. Washington SOUNDTRANSIT Scale: I"=20' Filename: S59_R402RP02.dwg Contract No.: C 759 Submitted: Date: Approved: Dote: Dote: 09/15/06 LINK LIGHT RAIL PRO SOUTH CORRIDOR MOO? S 154TH STREET RIGHT—OF—WAY PLANS STA R40 15+00 TO STA R40 20+50 SEE DWG R402RP03 20 40 ivg FEET 4717, g No.: R402RP02 Sheet No.: 14 Rev.: 0 XREF'S Resolved ZG-2234H RE; F.R 5! RP S ,CA S59J'762AU S59J'762CP 559_R402CG4•t_ S59_R402R/1• S59_R402RP X560RX X560SF UrreseMd L FSCALE I- / 2 • 3 • 4 • i- REC. NO. 2591707. DATED 1930, 10' SL0Pt,ESMT TO STATE OF WA. F L NW I/4 SW I/4 SEC 22, T 23 N, R 4 E; W.M. 25' STORM DRAIN EASEMENT TO TAX PARCEL —0080 - REC.: NO.- 5533740.------ R/W NO. TUK-141 ( 0043000080 COW. skei, Kosa - J R/W NO. TUK—I42 ( 0043000105 NEW HORIZONS GRP II LLC Z 1�,'�)y�-a�• 4._��*� - ?s_r - 11.+ _: 7�l-ip77.�.l�A-► �►'�'+'+V�.�. "y.L+ .tlSnt!_�•r�X�.,f=t s:i.%.ly �7 �Xk'' � •= l.r�r`R'"�-��w�>w /. , ���!•a.'a..>�h<,},�s��..,r1a=r',.__• ; ��.�_y.,y - v�t•`a1. �. .-A-1�_rrtp�.1."�y,!��i�.'...�i�:���fit ����.f4.;{�+r�1•�,M!�� pN ;I !- 1' f h%r t --'t'. 5. it�i- .. rt {.. ,Z'� . �i�i lit„ • `Y"rA�'s='�� N 0 eV R%f g1 ' 1 N c.) :11/ '''''' ''''''''''''''''''''''''''''''''''''''''''''' ' Q• � i 1 v i io \ O f f / � 1 / � 3 to 1 h /X, O V W I o 0043000070 INGRESS — EGRESS REC. NO. 88071509 mo' — — —111, KIRKLANDIINVEOMENTS'INC 37o0'5 8P*EST COAST PRODUCTS_'LL �C'fr tet_ I EX. ESMT TO VAL VUE SEWER DIST. it 110' WIDE, FIEC. NO. 8304140540 NOTES: I. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BASIS—OF—BEARINGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. '{"i �i"fY. Yom• �.. •Ylk�� SEE DWG R402RP03 x ESMT. TO WATER DISTRICT NO. 25 * PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS *PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESM T. SQ. FT. KING CO. RECORDING NO. 1 759TUK-139 0043000070 BP WEST COAST PRODUCTS LLC 28035 x 750 1894 2 759TUK-141 0043000080 McDONALDS CORPORATION 34243 3103 Designed By. M. VANN Drawn By. H. NOVACEK No. Date Dsn. Chk. App. Revisions Checked By. E. BONE Approved By. A. MARWAHA P$TC ® � Lim & ASSOCIATES. Inc. Consulting Engineers Seattle. Washington SOUNDTRANSIT Scale: 1 e=20' Filename: S59_P762RPO I .dwg Contract No.: C 759 Submitted: Dote: Approved: Dote: Date: 09/15/06 20 10 0 .1 20 40 SCALE IN FEET LINK LIGHT RAIL PROJECT SOUTH CORRIDOR INTERNATIONAL BLVD RIGHT-OF-WAY PLANS NORTH PARKING LOT Drawing No.: P762RPOI Sheet No.: 15 Rev.: 0 MtEPS Resolved ZG-2234H REG -FIR 55, 7P sS:A S5:. _P S59_P762AU 559_R402CA 559_6'4028 S59JN02R X560PX X560SF Lhresplwd LTSCALE l -i 2 • 3 • 4 • 5 0 0 n w 0o •0 ri t .. N Ofi 0 '1,tn co • 0 U — SEE DWG R402RP02 NW I/4 SW I/4 SEC 22, T 23 N, R 4 E; W.M. R/W NO. TUK-139 ,-f 40 A ( 0043000070 ) Y4 `� ..�'1 �.-+fit- ,a•!"t tb \� a1� SEE DWG P762RPO I --BP WEST COAST PRODUCTS LLC ------------- ----- 1525 Z '64Wit, i)tr.Ns• I -------------- (�.�rte -- y _• , f .. '✓`i+ lam. TS INC r 0 k •\.--�%'�'` k 4t k" 1�-Ck"\-1\---t- 15' .kt1t >t"r l .. i. .k - 1S L 441 Pa C.'( GPF 41P R40 1+00 OO+ZZ O t7 R40 LINE= I/16TH LINE=R/W 00+ -VZ 01710 ml R40 26+00 0Q+9Z 017e1 SEE DWG R402RP04 00 000 0 0 o r .lo 0 0 0 0 0 3RD AME TRANS ADAM'S i N� SOUND STATION & TRANS l T PARKING LOT i NOTES: I. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BAS1S-OF-BEARINGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR I MPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05 SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESM T. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDING NO. I 759 TUK-139 SEE DWG NO. R762RP01 2 759 TUK-140 0043000075 PARTNERS PREFERRED YIELD INC. 42405 42405 0 3 759 TUK-144 0043000210 PARTNERS PREFERRED YIELD INC. 33706 33706 0 20 10 0 20 40 SCALE IN FEET Designed By: M. VANN No. Date Dsn. Chk. App. Revisions Drawn By: H. NOVACEK Checked By: E. BONE Approved By, A. MARWAHA LIN & ASSOCIATES, INC. Consulting Engineers Seattle, Washington Lilifig SOUNDTRANSIT Scale: 1 e=20' Filename: S59_R402RP03.dwg Contract No.: C 759 Submitted: Dote: Approved: Dote: Date: 09/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD RIGHT—OF—WAY PLANS STA R40 20+50 TO STA R40 26+00 Drawing No.: R402RP03 Sheet. No.: Rev.: 16 0 R/W NO. TUK- I 26.2 ) Re&Ward-- 6.16.2LNI3H- 5. S.59_R4021iR N560811- - • 2 3 4 • 5 0 0 1'; 11.1 0 3 0.1 o 0 Cl- .. 0 ,D o 0 - SEE DWG R402RP02 la I , r----"----1 NE1/4 SW1/4 SEC 22, T 23 N, R 4 E; W.M. 1. I 11;!:.'' ° R/W 14). TUK -157 ) ( 0043000195 ROW or MAKO I PAV57) PAR!, NC_ R/W NO. TUK-I43 ( 0043000200 ) KIRKLAND INVESTMENTS INC. P49!rJ:' STMENT L 1 0 CALC'D PC. 2 3100 • IS lit R/W NO. TUK- 156 ( 0043000197 ) SADR AL I, SHELLIE 75stC: WALL', - — < *1- 4 A I' 1A, ;1,17 ,04 Tn _ 45' --, i 4: 7 ....• R/W NO. T(JK- 155 ) 0043000184 ) ENGLUND, JOHN R "-•'.71.7.77.••7••• R/W NO. TUK- I 54 ) s wonc. 0043000 I 70 'A, rmENT TUAZON PROPERTIES LLC 0` 5X5 TELEPHONftSgi. REC. NO. 870527 H 85. 6±00 EMPTY MON CASE W27.044. E 1381491.67 R/W 264- R726.25'L=355.93' R40 7+00 R40 9+00 +-9Z- ---- -4i17/gTHNE = /W CUT' ALL IF 99 a - CITY LIGHT ESMT. Q+Q Q47 CALC'D PC N 273043.05 E 1381485.96 1421 iaillakilr , . • ' ' ' ..., - i '' )4' ‘,0?). - 'C''..0 ,' .... - ,... .... 7: 7 , . . ...- „- - - - ; ''''', . . . , . . - - - , 7 , - - __.- , - - -, *77 - -._ , ,— - 7 ,,,gw,4.4.,--, --,, —7% 7, . , ' --,..... ..... •,............../ i ....' , , ......... .... , ......., , ..... ..... , ......7...• ..........e .... ••• .<13/././.4.? -.' .... ......... .<4, ..... 4.f Oe ''. / 4e.' ,lc.,{, _ c.•-_._ -_ _, . „r _ ' —_ ,_ ' A ' \ euZii 11 ' _ 1 ,;,,(,,,•34"_ _ . ' fiz::, 1 10' r----7. ‘-'•• --)q-Kv-p- r 2P9.1-6--- ' \-7. cA o LELL! 1Jir f ''..." I fOrfl r2F9A* i • - ' 4 R WM 155 ' it 0PWxf LP: CON; .:.:'..): BR I DOIT -2 p _ : ,,,,... Lae I' d 2 9.35 9 9 I 4 I ') 9 9 4 9 I 9 PA ',,E0 PA,Cl< ! NG NOTES: I . SEE DRAW I NG NUMBER R402RPO 1 FOR GENERAL NOTES REGARDING BAS I S -OF -BEAR 1 NGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQU I REMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR I MPROVEMEN TS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. Q1 -19M R84 OHM.% L97 31:ZD-Li r- JR-Ick&ID\ ,.1 \ , !, , m'S 570i. • ../77. CO •••• - - 6 270' PA Vr_L! PAP.!0 23 ESMT. FOR FIRE DEPT. AND EMERGENCY ACCESS. 1! REC. NO 860716 I 622. j! 7-1 2-sTo-.5 • W 5/ 0415 TRASH RACK A SPH PAVED ' _ . I I 'II! r—j Th ( 0043000335 ) FSF WEST COLON I AL ASSOC I ATES LLC 3314 5 tLJ , rD 1 -I + SEATTLE CITY LIGHT ESMT. * PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS *PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORD I NG NO. i 759 TUK- 126.2 0043000335 FSF WEST COLONIAL ASSOC. LLC 217734 856 +184 4703 2 759 TUK- I 54 0043000 I 70 TUAZON PROPERTIES LLC 71717 165 1871 3 759 TUK- 155 0043000 I 84 ENGLUND, JOHN R I 5375 285 1834 4 759 TUK- I 43 0043000200 KIRKLAND INVESTMENTS INC 69655 100 5 759 TUK- 156 0043000 I 97 SADRAL I , SHELLIE 10300 225 6 759 TUK- 157 0043000 I 95 MAKO INVESTMENTS LLC 25714 50 e‘-‘4 5 PAYED PAPA. ',V 23 ESIv AND EV REC. N( SEE DWG R402RPO5 20 10 0 20 40 SCALE IN FEET Designed By. M. VANN Drawn By: H. NOVACEK No. Dote Dsn. Chk. App. Revisions Checked By E. BONE Approved By A. MARWAHA EIL LIN & ASSOCIATES, INC. Consulting Engineers Seattle. Washington llifig SOUNDTRANSIT Scale: Filename: S59_R402RP04.dwg Controct No.: C 759 Submitted: Date: Approved: Date: Date: 09/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD RIGHT—OF—WAY PLANS STA R40 26+00 TO STA R40 31+50 Drawing No.: R 402RPO4 Sheet No.: Rev.: 17 0 "REFS Resolved ZG-2234H REG—F 55' P 559_ _RH $59_R402RP x560Rx X5605E • thresolved 1. TSCALE ,_, 2 • 3 • 4 • 5 o 0 cnw w 3 C va' 0 a 0 O O - SEE DWG R402RP04 NE 1/4 SW 1/4 SEC 22, T 23 N, R 4 E; W.M. / / / i \J BLK 2 3RD ADD. TO ADAM'S NOME TRACTS •/',BLK 3 R/W NO. TUK-152 0043000227 ) KACZMARSKI, VERNON H. isz_40 4o" - EMPTY MON CASE N 273065.51 E 1381687.21 'y53o6 � oQ IS L r 4 ' �J C 0043000225 I t � ; � w to MASK, FER I D dc DINA LL /' LI l/ -/ • fir. '' �,.....--:;:l. "=---"moi - �-�.:rr f_,�,,•�,��?`'.�---'•:'- R/W NO. TUK-151 t r r 28°04'47" T'181.6►' 726.?,.... 5ti - CALC'D =35g-g3' N 273068.31 E 1381698.69 004300033 FSF WEST COLONIAL ASSOCIATES LLC / 3%1 5 IS'%N. LAS o`a 30,% 3n, NOTES: 1. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BAS I S -OF -BEAR I NGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE L1STING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. N 273053.94 E 1381765.92 _ .�.•,., /� �i '-�—~ ��i ' ice/ � �� i .��� ..••. •.••'••:• :y:'.I••'••i' r'� �ri--i --- --�--_- • "•1-14-: 17: ;1111 _ter i -_▪ _-----__-• BLK' 3., 05220367, ELEC. \\\ES'6iF�3Dt'CITY OF SEA/TTLE• 3RD AD R/W NO. TUK-153 ( 0043000266 ) STIMSON, THOMAS M. S�o�l 'toN. /AZ BLK 5 SE 1/4 SW %4 SEC 22, T 23 N, R 4 E; W.M. REC. NO. 8806170663, A — V. GENERAL DECLARATION THAT KING COUNTY SHALL HAVE EASEMENTS TO ACCESS AND MAINTAIN STORM FACILITIES ON THIS PARCEL AT OWNS R(S -----, EXPENSE. 7 . TO HOME TRACTS R/W N0. TUK-120.1 ( 0043000216 O'HARE COTTAGE WOODS LLC SEE DWG R402RP06 * PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS *PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDING NO. I 759TUK-120.1 0043000216 O'HARE COTTAGE WOODS LLC • 95196 1605 4681 2 759TUK-151 0043000225 MASIC, FERID & DINA 12982 102 1118 3 759 TUK-152 0043000227 KACZMARSKI, VERNON H. * 9795 245 457 20 10 0 20 40 SCALE IN FEET Designed By. M. VANN Drown By. H. NOVACEK Checked 8y. E. BONE No. Date Dsn. Chk. App. Revisions Approved 8y. A. MARWAHA oao LIN & ASSOCIATES, INC. Consulting Engineers Seattle, Washington SOUNDTRANSIT Scale: 1"i=20' Filename: S59_R402RP05.dwg Contract No.: C 759 Submitted: Dote: (Approved: Dote: Date: 09/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD RIGHT-OF-WAY PLANS STA R40 31+50 TO STA R40 37+00 Drawing No.: R402RP05 Sheet No.: 18 Rev.: 0 XREFS Resolved ZG-2IJfH REG -E..8 S55 ` RP S: A SL FOS X559rs XSBaRX X5605F • 5595E L newt d L TSCALE la1 2 • 3 4 • 5 0 0 0 n w w 0 0 DX � P c 0 to CL N .. }N 0 01 0 0 O04 to 0 0 D' N C7 0 W W N NE I/4 SW I/4 SEC 22, T 23 N, R 4 E; W.M. • NW I/4 SE %4 SEC 22, T 23 N, R 4 E; W.M. MAS IC, FERID IDINA I �1oL4{ $eaYlti .' $1 �jollo $ . IS`i0 r.4!dK[ Fy�)1 i./1A ". in '��tl. "'1r 20-'x% ,---,-,1-' i, ��i � . i,s rI ;I --�_. R/W NO. TUK—I50 I C 00430t�224 I MURRAY, DOUGLAS S. R/W NO. TUK— I49 ( 0043000238 ) TO CAL CID CTR N 273681 64 E 1382323.61 MURRAY, DOUGLAS S. UTlT/ESCITy FOR tmENT 5 u 442.,`� NOP 950503024 ,7 RAND E 0 0' 25' 56' CALC'D INTERSEC N 273332.35 E 1382316.93 R/W N0. TUK-120.4 ( 2223049048 �- � � F I JOHN • N, MARV I N JR o ` Q _—WOLFF,-`TAMELA-'J � . \` \SZtL 'ILA g 4t, \FC O -_ Bs04' T ION R40 . 00 I 1 I / II TA / KJtOr REC. NO / MENTIO' 4124828 r PARC 4fFECTIAT 95E IS PRO Bur 1DED. NO LOHAT ON R/W NO. TUK-120.2 ESMT. FOR SLOPES TO KING COUNTY, REC. NO. 8606170574 I Fitat'moO MIeiASE 273332.28 1382316.90 APARTMENTS 12. • - 0 3RD A+�r . TOTS ADAMS HOME TRA R/W NO. TUK— 120. I a R/WJNO.TUK-148 CITY LIGHT/ ( 0043000219 ) ACCESS ! ESMT OHR I, ASH0ll0 & SACHAR, RACHNA y 11 vol 4l 1 ' !. - 00) I OW rlf, C-7 ' 11 ( 7 31, Iogco / �WNW�t� f 1 • ! a�W�f!I j / ( f I II ( 0043000216 ) e ! O'HARE COTTAGE WOODS LLC (11 NOTES: 1. SEE DRAWING NUMBER R402RPO1 FOR GENERAL NOTES REGARDING BASIS—OF—BEARINGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. TO S 1/4 COR. -MON= N 271028.72 E 1382272.914 • + SEATTLE CITY LIGHT ESMT. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORD I NG NO. 1 759TUK— 120.1 0043000216 O'HARE COTTAGE WOODS LLC SEE R402RP05 2 759 TUK—I20.2 2223049096 WILLOW CREEK APARTMENTS 27000 185 734 3 759 TUK-120.4 2223049048 WOLFF, TAMELA J * 9152 330 4 759TUK-120.5 2223049078 JOHNSON, MARVIN JR & JUAN ITA * 8514 330 5 759TUK-147 2223049041 O'HARE COTTAGE WOODS LLC *45912 2721 6 759TUK-148 0043000219 OHR I, ASHOO & SACHAR, RACHNA 8771 578 + 958 00 553 2089 7 759TUK— 149 0043000238 MURRAY, DOUGLAS S. 7935 71 481 8 759TUK-150 0043000224 MURRAY, DOUGLAS S. 12145 31 1197 Designed By. i • <3.ij?8 cv73ii�5 6i i 20 10 0 20 40 SCALE IN FEET SEE DWG R402RPO7 M. VANN No. Date Dsn. Chk. App. Revisions Drawn By. H. NOVACEK Checked By: E. BONE Approved By: A. MARWAHA Ailk Submitted: 0®D Lai & AssocuTEs, INc. Consulting Engineers Seattle, Washington SOUNDTRANSIT Scale: I "=20' Filename: S59J2402RP06.dwg Contract No.: C 759 Dote: Approved: Dote: Dote: 09/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD R I GHT-OF-WAY PLANS STA R40 37+00 TO STA R40 42+50 Drawing No.: R402RP06 Sheet No.: I9 Rev.: 0 )(REF'S Raadwd X560rr RE' SS; P S55_ _SP S55_L57Jro S59_R402CA S59_R402R 559JM02R� S59_W402CA Y559rx 5595E Lhroadwd L ?SCALE 2 =� 1 AA • I 51 R/W NO. TUK- 120.3 �• ( 2223049077 ) I /ice_ -_,:-...„1:--„:-..,>_,J /// % I _. 0.5"-±---'----- '-,--A---'.'"-- ...,, ^�?. // s NO. 8007 /�� r'� ▪ //ice.....1.1---r, Tei ESM T. %'RtHE C/F*11Y' .PE i, /�� - , i 3p, `` i ,DIFF / 1 ` i —II ,I 3oN �N'c �` ..';-I GUERZON, MICHAEL J. • 410 `b SooI\n.tnA,,iu.,( R/W NO.TUK-145 2223049003 PACIFIC PARK PLACE APARTMENTS L 3 A=33'54'28" R=7 13.03' L=421.97' 4 • NOTES: I. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BAS I S -OF -BEAR I NGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. TH I S SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. # AREA WITHIN EXST. GUIDEWAY AIRSPACE LEASE * PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDING NO. 1 759TUK-119 2223049058 ALLENNS DEMOLITION & EXC. 73603 73603 0 2 759TUK-120.3 2223049077 GUERZON, MICHAEL J. * 19536 1733 3 759TUK-145 2223049003 PACIFIC PARK PLACE APARTMENTS LLC * 433240 8809 424431 4424 17061 2 759TUK-146 2223049059 GUERZON, MICHAEL J. 28704 3488 25216 2212 4 WSDOT-SR518-2 SR 518 WSDOT 1717 2006 # 8589 2520 # Designed By. M. VANN Drown By. H. NOVACEK Checked By. E. BONE Approved Bs A. MARWAHA LIN & ASSOCIATES, INC. Consulting Engineers Seattle. Washington LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD RIGHT—OF—WAY PLANS STA R40 42+50 TO STA R40 48+00 XREF'S Resolved X560rs ZG-2234H RE• S RP R !SP S35_L57.Jko 5591t402CA 559:RIZo OH S19 R42Rfr X539rr -5595F Lhreselved L (SCALE 2 • 3 • 4 • 5 0 o 0 n 0 w - ca c oo • o C N .. N 0 (II V) ON N U — SEE DWG R402RP07 NW I/4 SE %4 SEC 22, T 23 N, R 4 E; W.M. SEE DWG W40—RPOI 2£V` \ \\\ mm��\\ off• ..( O ` \ OJ OT `\\ `\\- \ .-� / // si// f/ \/\,„/ R/W NO.TUK-145 ( 2223049003 PACIFIC PARK PLACE APARTMENTS LLC ' r00_17 r.r,L. _ --/ = 2/6 5..T3L_L74iq/iio MC?:/1:1/., 3/X/ • _ / r � Q 0 CE90_-_�Oe— - R40 s+O0 r l . TEB_BLYD r - rrz-- "7;47- l r7.r¢.rr r6T/r�lWG!rRiEi.'yrd'�-r-,_•i-.r r�!!r_r✓i-r-,l�r`"r`r.rr,'yr,�r> .rrvrCN•ANt rrr-rr,..-r•r„r— r±��-"__tea�?=_--�_ �-~'���`-_�_-e��1VCR�'`/'_3CT 8C33 DJ P e: f • -r' 8.4 BED r•. WIRE r•ttw,:{' e_.-� r"•.�'^�� rrr rrr •• RE gk - --- --- �r ! oi�R --'lam --ONO SEE DWG W40-RPO1 A r O Z J ce•w � U O =Z W r Z N re ce N 0 • 0 _,OOU ▪ MID LIGHT RAIL GUIDEWAY(TYP) SEE CONTRACT C755 -10_1,3K TRANSFERRED FROM WSDOT TO-OE_TTUKWILA (R/W NO. WSDOT-SR518-2 NOTES: I. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BASIS -OF -BEARINGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. QR/W NO. WSDOT-S518-1 ). WSDOT SEE CONTRACTS755—__ WSDOT * PARCEL AREA IS FROM TH SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS ;PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORD I NG NO. 1 759 TUK-145 2223049003 SEE DWG R402RP07 2 WSDOT-SR 5I8-2 SR 518 SEE DWG R402RP07 Oei olopt4,,u ���F�- MT 20 10 0 SEE DWG R402RP09 20 40 Immml SCALE IN FEET Designed By. M. VANN Drawn By. H. NOVACEK Checked 8y. E. BONE No. Date Dsn. Chk. App. Revisions Approved By. A. MARWAHA --Tem LIEU LIR & ASSOCIATES, INC. Consulting Engineers Seattle, Washington r SOUNDTRANSIT Scale: 1"=20' Filename: S59_R402RP08.dwg Contract No.: C 759 Submitted: Date: Approved: Dote: Date: 09/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD RIGHT—OF—WAY PLANS STA R40 48+00 TO STA R40 53+50 Drawing No.: R402RP08 Sheet No.: 21 Rev.: 0 XREF 5 1 ResaNal 2520,1 IC -2234H RFf S IPP .SP S55_�al�F° S59Jt402CA S59_R402RH s39JPra7Rfr 2559r +5595r Lttruolved L YSCAL£ 1-r 2 • 3 • 4 • 5 0 co 0 w rn 0 3 CV ai o o o v.. ctio-a 0 tn Y0 CV� U - NE 1/4 SE %4 SEC 22, T 23 N, R 4 E; W.M. ___- r: i 4 \ l R/W NO.TUK-145 ) -\ ' / \---<:,---_� -- ( 2223049003 ) r . , t, J\ t ,.- VALLEY VIEW LP e - ::r ; N 273395.17 —` \\ o - E 1383668.49 �`� --_ \ .. �' _� �_ l / "��^r -- -- --� `\ ot yamin _ _ 7- 7� �'/%/�%/moi'/ �L//ILJ// T— J `� i� nT--- . to JL _ �•. --'- �, N-'273 7:06 ---_._,_--•---,E 1 83981.49 1 ////i�11/1 11t/r -r;:, tFP�� %-T 7 / /'1 ///717,r Fi'eC �////`T7 • .�/1L•as�� �7r/-17j/7// /// /%//7/7, J1/////// I; :�J � i.t11L11 � �! 1 ���.F"7rr.ti� �. *s: ........... .�/./L//.;..//rL./1C_ � 41.. L/1 ^e1a,:a......t/1 L — .a.s+..CO �-.,,. i ..r*+.w `e�.r4rrl..c./ 1 oo wi SOUTHCENTER BL VD `R/W S69°54'21 "E 693.71' R40 4+00 R40 5+00+ / R40 56+00 R40 7+00 R40 58+00 n R40 59+00 OG p 0 III - _ .1- tr w n o W- L ...Imo,-,..•6.77,.'�'IMI•r -- °►'a• -Iiiy*ie1.r..� --�loo►aiw,:/ralwli�— i- .i1 • s-. i. t, . -_— _ - `ji:•-.��_ft'a1.•tr�r.-�^ / ori/-/�i/777T�'r /iTT�-- -- -- - -- -- -- -- -- - -- -- -- -- -- — -- V) _ ��_ ��� ��� �__ ��_ _� �� ��� ��� �__ ��� ��_ __� �� � _�.„... A Com= _ ilia --. ! LINE TABLE .._ J � ��- -_�'-`—' LINE BEARING LENGTH °,—_ - N20°05'39°E % ” LIGHT RAIL GUIDEWAY(TYP) - - -__ ._._ L2 N69°54'21"W 48.00 �,_- _ _ AREA TO B__ JRAN FROM SEE CONTRACT C755 ----____' --�__� L3 N20°05'39"E 5.00 • WSOOT-TO CITY OF Ttf(W I LA _�---- _ — -�_ E N40°05'39"E 1.00 ' -.---- --- _ -_ L5 ''N69°54'21 "W 46.97 _-- ' (R/W NO. WSDOT-SR5 1 8-2 ) - - -- `--�` ~' L6 N20°05 3-0T---5-.00 _�-- —` - - — �_ L7 69 S4 -2-L W NN -64.20.54054"'39"E 22.50 -._--- WSDOT - `- ----r� SR 5I8 JR/W N0. WSDo7=SR5JA-I -- �- L8 N20°05'39"E ' 580 �� - _r- - - WSDOT --------- ��_ -- L9` .N69°54'21 "W 214.50 ~'` -- '—lam -- - - - _-- SEE CONTRACT C755 L I D N69.541 -2r -W----_53.25' ---f —. ----L-1-� N20°_06'39"E 8700 �t - .-------- -- -`��� l '� --__ -��`-��_�.�--`_____ -��-"-^'_-�__.-. —_.- ____. ._._-_ ,�--ter-'--l�- �l '^+�__ ter""�-.^r'_' —�� ..f -~ - -�-_-_----�-_ - --` _���-_L�-�.'`-__ ____ r • NOTES: 0e/ ��� 1. SEE DRAWING NUMBER R402RPOI FOR NERAL NOTES BAS I SE OF -BEAR NGS, COORDINATE 0EGARD I NG �1 4 4q '5* 5 ?9'' ' SYSTEM. LEGEND AND UN 1 TS OF MEASURE. FSO �FH 2. THIS SHEET SHOWS THE LATEST ROW * PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS. T REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS SOUND TRANSIT R/W N0. PARCEL NO. (TAX ACCOUNT N0.) OWNERS * PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDINGAt NO. PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR I 759 TUK-I45 2223049003 SEE DWG R402RP07 IMPROVEMENTS. 2 WSDOT-SR518-2 SR 518 SEE DWG R402RP07 20 10 0 20 40 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING SCALE 1N FEET NUMBER G402GV05. Designed By. M. VANN L & A LIN & Assoc,ATES. Inc. Consulting Engineers Seattle. Washington SOUNDTRANSIT Scale: 1 "=20' LINK LIGHT RAIL PROJECT SOUTH CORR 1 DOR SOUTHCENTER BLVD RIGHT-OF-WAY PLANS STA R40 53+50 TO STA R40 59+00 Drawing No.: R402RP09 !� ' F!• ' '' D7-- 1,11/ Drawn By. H. NOVACEK Filename S59.i402RP09.dwg �C�J/� VT(/ Checked By E. BONE Contract No.: C 759 Sheet No.: Rev.: 22 0 _ y. Approved B.1 A. MARWAHA Submitted: Date Approved: -Date: Date: 09/15/06 No. Date Dan. Chk. App. Revisions >ms ' Ravened x56&„ ZC-2' y RE/ 5555- _SP S55_L57.F° 5591tb2CA S59_Rb2�R.L 559 R4o2RP X559rx x559Sr LTSCALE 1.1 2 • 3 • 4 No. SEE DWG R402RP09 A \ N 273205.64 27:-a� 57 40 1 1 /Z Y £ mei E 1384204.06 i mp rn PI o� J _4 io o m ' 39.75' r ---7-1 __ P' R40 9+00 R/W NO. TUK-145 C 2223049003 VALLEY VIEW LP NE 1/4 SE %4 SEC 22, T 23 N, R 4 E; W.M. N 273129.70 E 1384438.19 R/W: - -=13'49'45" R= 1909.86' L=460.97' R40 si it _ p //////// /////// P;/////// \/'\'\ 1 222304909' 1 PURIy R. do ANA C. 1 1 i i _-if 1 \ i ,�J \ �i-� ' 1111 / 0 ` R/W �T4AC- 118.4 // / \,/ C '�2223049�89 / A. ! p BUI , THUY LINH /-7 v 1/ yq qty S IS` n:,,, sT /i'5� /. 1 \A //• ////i /////` ///// /4/ / / /4/, ( V//03 /'/,- \i //t / /gin `//V /A'., �`yc / , i' / / Y , / I+� J_-, /(/4 c- frr7/-r'FT7////////// ( / ''if / ///// /////// 8U1 UI�C DI ZZ L w LLL / R/W NO. ( 222304 1 1 1 11 1 t o' R/W NO.TUK-IIB.I ( 2223049019 ) SARANA I NTL BUDDHIST CENTER ISZ`I1 41S1. 4.tA4. 5 ESMT. TO CITY LIGHT 1 REC. NO. -------- 20041117002142 _ SEATTLE ---- COOPER. LEO - _----- ����p,.. � 3 l - c'( ; _ 77 r�Y7 --- /////////// / / / 5:4150.97. / SOUTHCEN TER BL VD R40 2+00 N 273104.83 E 1384504.83 Date MID MD MIN. LINE TABLE LINE BEARING LENGTH L I N20°05'39°E 5.00 L2 N69°54'21 "W 22.50 L3 N20°05'39"E 5.00 L4 N69°54'2 I °W 44.75 L5 N20°05'39"E 1.00 -�L6 N 18°57'48°E 1.00 1:7----N14°45'33"E 2338 7.00 L8 05°-1-4'.27°W 21.75 -L9. N 14°45'3 "E.... 8.00 L I 0 --1,41-2.".',55'58°E COOPER, LEO 2 0Q L I 1 NO2°49V541-E.. 2.01 936 N68°41'22"W -2-7-Z3 L 13 '47: =08'3 I "W 18.36 ,L 14 N84" '"W. , 105.96 NOTES: 1. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BASIS -OF -BEARINGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. Dan. Chk. App. Revisions ���-iip•i•••,�- � 1A�,��: �i���y tt1 �i _��.•�1a.i... ♦6436 14.�����1'��= -���, :Ili �j�►nitif ��:� :M= �•:`�:� ��w�OAfas, 1��4•� ��i����+171�a�.�. '2° IDE e`AM • R=608.07' L=141.68' AREA TO BE TRANSFERRED FRO WSDOT TO CITY OF TUKW ILA R/W: CALC'D P.C. i N 273143.40 E 1384269.41 MOP (R/W NO. WSDOT-SR518-I WSDOT SEE CONTRACT C755 =IMP OM x LIGHT RAIL GUIDEWAY(TYP) SEE CONTRACT C755 (R/W NO. WSDOT-SR518-2 WSDOT _ _ x * PARCEL AREA IS FROM THE K1NG COUNTY ASSESSOR RECORDS. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS *PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT, PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDING NO. 1 759TUK-II8.4 2223049099 BUI, THUY LINH 14231 17 1713 2 759TUK-118.5 PARCEL D BUI; COOPER; PURIZACA 2338 44 178 3 759 TUK- 118.6 2223049089 COOPER, LEO 9858 241 936 4 WSDOT- SR518-2 SR 518 SEE DWG R402RP07 Designed By. M. VANN Drawn By. - H. NOVACEK Checked By. E. BONE Approved By. A. MARWAHA PSIC EIWEI LIN & ASSOCIATES, INC. Consulting Engineers Seattle, Washington SOUNDTRANSIT Scale: 1 "=20' Filename: S59_R402RP 10.dwg Contract No.: C 759 Submitted: Dote: Approved: Dote: Date: 09/15/06 SEE DWG R402RP 1 1 40 SCALE IN FEET LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD RIGHT-OF-WAY PLANS STA R40 59+00 TO STA R40 64+50 Drawing No.: R402RP10 Sheet No.: Rev.: 23 0 MU'S Reached X5560,, 2G -2234H RF/ RP !S' 559_R402CA S591t1025 559 X556rx X559rx x556:,, x5595,' uve:ahed L TSCALE 2 3 • 4 • 5 0 cs0 0 w N -c - c it N.. 'aao cr,ri %�a 30 U � SEE DWG R402RP I 0 NEI/4 SE %4 SEC 22, T 23 N, R 4 E; W.M. -30'c8DLSLOPE,_GUARDRAIL & PEDESTIAN PATHWAY ESMT' -- REC. NO. 9604180920. R/W NO. TUK 118.1 ( 2223049019 SARANA INTL. BUDDHIST CENTER 10' UT1L ESMT., REC. NO. 5703271 -\ TO MON Y4 CORNER PRE -1964 N 273599.205 E 1384940.53 TO MON IN CASE 1+ I 1 CORNERS ET BY K.C. 1964. .._ N 273602.94 - ��, E 1384950.79 VARIES NW I/4 SW I/4 SEC 23, T 23 N, R 4 E; W.M. ee 40' i i ee or LIGHT RAIL GU,DEW4Y(TYP) SEE CONTRACT C755 R/W N0. TUK 116.3 10' ESMT. TO CITY FOR UTILITIES, ACCESS AND BRIDGE MAINTENANCE. REC. NO. 20030819001048 & 20030819001049. ( II57200015 BOWEN, LEROY Pt), < 26' SLOPE ESMT. TOV.ISOOT o 9.26'44"E GRA VC: R/W NO.TUK-I I5 1 1157200012 S ) RANGY_ J. -�_,1---------1 �da- 1 ------------------ Lk �t�'t J �•-^`9.484-L4 - ECNQ S83°44'06 "E R40 69+00 R40 70+00 _ te•t• , - • m •µn io jr ' 'n Fsol N 1 i`8- ra ^a'tdv �-'� --..cT�.� a� 1h� �-12, �- .4 3 —. • it - - 1 '~AltR=151.00 y.".r t`k T�37 4 ' 1. AREA TO BE TRANSFERRED FROM -'�-`���-�I WSDOT TO CITY OF TUKWIL(►% ,�, �_ 1 -- 1tih�`yl r/• f �r ,71 T N 272997.70 E 1384747.35 h1/// /1 t////.// //', ,////// ////1 R/W NO. WSDOT-SR518- ) WSDOT LINE TABLE LINE BEARING LENGTH LI N84°29'31"W 105.96 L2 N83°03'59"W 19.54 L3 N84°29'54"W 12.34 L4 N79°26'03"E 3.17 L_42.34' - OP' I N NOTES: I. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BASIS -OF -BEARINGS. COORDINATE SYSTEM, LEGEND AND UN 1 TS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. (R7'W NO. WSDOT-SR518- I) WSDOT ▪ T87 SEE CONTRACT C755 .• ,r+8 •N�3iSi fzg 611 CNYV3M � l ( II572000 / sg t t atC I TY OF TUKW I LAN i ,- 9 ' N 3 1 >4 �I 4 1'h� ,__ lay ay' t4(1 NtiN Q o• 1 p aa� ryl, '! BOTH LINES TO '. 1 " SEC. CORNER MON N 270969.51 ii 1 Pe. E 1384906.92 I! 1i 0.4 F1 HC 98t'N� / t gib R/W NO. TUK-118 ( II57200031 ).•" ESA 0806 I.NC • 454S1 S3" Au- 5. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS *PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDING NO. 1 759 TUK- 116.3 11572000 I 5 BOWEN, LEROY 25,877 772 2 WSDOT- SR 518-2 SR 518 SEE DWG R402RP07 C 1157200035 PIGOTT, MORRIE 15445 s3R.A At" S\ SEE DWG R402RPI2 20 10 0 20 40 SCALE IN FEET Designed By. M. VANN Drawn By. H. NOVACEK Checked By. E. BONE No. Date Dsn. Chk. App. Revisions Approved By. A. MARWAHA ❑L M LIN & ASSOCIATES, INC. Consulting Engineers Seattle, Washington 11711 SOUNDTRANSIT Scale: 1"=20' Filename: S59JR402RPIl.dwg Contract No.: C 759 Submitted: Date: Approved: Date: Date: 09/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD RIGHT-OF-WAY PLANS STA R40 64+50 TO STA R40 70+00 Drawing No.: R402RPII Sheet No.: 24 Rev.: 0 resew SS '9R S55hrw0TRR o-:ssaf - 1-i 2 • 3 4 • 5 too 0 0 w ao 3N — Ir ; w.. 0 N- cq N i° SEE DWG R402RP1I 30' R/W NO.TUK-I 13 ( I157200013 l PLEAS RILEY W & BROTHERTON JOSEPH L r, -- R40 i0+00 363.11' 00+0L 0j?i N 272974.30 E 1385302.36 NW I/4 SW %4 SEC 23, T 23 N, R 4 E; W.M. Teto so.ok.Q.A..km.- 41..74 ( 1157200021 1 , 35' f. 1-1--1 CHENEY, GAYLE SOUTHCEN TER BL VD W 1� N ice • g• r, 0 3 R40 /1+00 ------- ----- NOTES: I. SEE DRAWING NUMBER R402RPOI FOR GENERAL NOTES REGARDING BASIS -OF -BEARINGS, COORDINATE SYSTEM, LEGEND AND UNITS OF MEASURE. 2. THIS SHEET SHOWS THE LATEST ROW REQUIREMENTS. THE PROPOSED IMPROVEMENTS SHOWN ON THIS SHEET MAY HAVE BEEN REVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETE LISTING OF ROW MONUMENTS SURVEYED SEE DRAWING NUMBER G402GV05. R40 L1 NE=R/W . R40 r+00 00+ZL 0i7 d zI N 272953.25 E 1385494.14 L5'>fz5 3_d 1& 5. R/W NO. TUK-1 13.2 ( I157200033 JANKELSON, ROLAND & WANDA,• JANKELSON, AGNES; JANKELSON REAL PROP. INV. R40 3+00 S83 44 06 E -'- 4: ti, ..:N.:.:.:::.:.:.%,.\: -s • N 272914.62 E 1385571.15 R40 /4+00 00 +iL_, 1 -5 A-_ R40 55+00 *PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS *PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDING NO. 1 759 TUK- 113.2 1157200033 JANKELSON, etal 37700 854 2 759 TUK-113 1157200013 PLEAS RILEY W & BROTHERTON J. L. 56471 175 1'5 20 10 0 20 40 SCALE IN FEET Designed By. M. VANN Drawn By. H. NOVACEK No. Date Dsn. Chk. App. Revisions Checked By. E. BONE Approved By. A. MARWAHA a®a L IN & ASSOCIATES, INC. Consulting Engineers Seattle, Washington SOUNDTRANSIT Scale: 1 "=20' Filename: S59_R402RP12.dwg Contract No.: C 759 Submitted: Date: Approved: Date: Date: 09/15/06 LINK LIGHT RAIL PROJECT SOUTH CORRIDOR SOUTHCENTER BLVD R I GHT—OF—WAY PLANS STA R40 70+00 TO STA R40 74+47 Drawing No.: R402RPI2 Sheet No.: 25 Rev.: 0 ww s Resolved • 7G -2234H REG -E.8 3 "J1P I. 5 _Aro S59_,..O2Ck S59_R4O2RM S59_R4O2RP X55780 t X557RX X557SF X55880 X558RX X5585F X559, X58WPX X56 OF +557VG r559SF U,e, h.ed 2 I • 3 • 4 • 5 o 0 3 0,0 — C 00 a3 n las Ing ou�i o L.� U Z -1 L r R/W NO.TUK-168 ( 0042000250 C) FLESCH, WAYNE 4ZzS S. IywA* ---- R/W NO. TUK 1,165 ( 0042000,3...� ) FERRER, FRED' NN. 1 0 4 ,(•LS' r 0 .1 a. SW I/4 NE I/4 SEC 22, T 23 N, R 4 E; W.M. * PARCEL AREA IS FROM THE KING COUNTY ASSESSOR RECORDS. SOUND TRANSIT R/W NO. PARCEL NO. (TAX ACCOUNT NO.) OWNERS PARCEL AREA SQ. FT. FEE TAKE SQ. FT. REMAINDER SQ. FT. PERMANENT ESMT. SQ. FT. TEMP CONST. ESMT. SQ. FT. KING CO. RECORDING NO. I 759TUK-161 0042000280 SCHOOL DISTRICT NO. 406 * 507,910 1,700 506,210 550 2 759TUK-162 0042000335 SANTOS. BRADLEY & ROSE 48,866 3,139 45,727 935 3 759TUK-163 0042000345 FARDEN, JOHN W. & JUDITH A. 39,967 6,423 33,544 1,492 4 759TUK-164 0042000360 ESTER, JOHN M. & CHRISTI M. 25,298 10,001 625 6 759 TUK-165 0042000348 FERRER, FREDD tE N. 39.509 1,200- 500 7 759TUK-119 SEE DWG NO. R402RPO7 8 759TUK-145 SEE DWG NO. R402RP07 759TUK-146 SEE DWG NO. R402RP07 9 No 444405 R/W NO. TUK—I63 ( 0042000345 FARDEN, JOHN W. 1 ESTER, JOH M342. CHR I ST I I M. o.'•.: R/W NO.TUK-167 ( 0042000355 CITY OF TUKWILA -- _—L — NQ _ N S 152ND S CALC'D CENTER OF SECTION 22 N 273681.64 E 1382323.6I I 1 I ' I -1 � 1 II I Iii �t7 - J 13-0 43'"� Pt. 51, R/W NO.TUK-162 ( 0042000335 1 SANTOS, BRADLEY 14 & ROSE MARIE SEWER ESMT. TO VUE SEWER DIST. C. NO. 75013103911„, NO,..2,50I 310376 NO. 7501310394 REC. t R/W NO. TI)K-16 I 00420280 SOUTH CENTRIAL SCHOOL DISTRICT P'IO. 406 441g S I5OT sir- ' ( R.. 11 1 Gl" r 15 .` vQv ii I it • v ,+f EKEC. E TSdYt„ 'SEAVLE REC. REC. 53025711 5302572 o" 714 q e. c3.. re 9.. 6., V 4 0 42- t +I 0,m cf- cr— k.1 S—/522ND ST- /NOPENEED)— _ NOTES: 1. SEE DRAWINGI UMBER R402RPO I FOR GENERAL NO REGARDING BAS IS-OF-BEARyNGS, COORDINATE SYSTEM. LEGEND LAND UNITS OF MEASURE. 2. THIS SHEET SOWS THE LATEST ROW REQUIREMENTS. 111 THE PROPOSED IMPROVEMENTS SOWN ON THIS SHEET MAY HAVE BEEN EVISED SINCE THIS PLAN WAS PREPARED. REFER TO THE APPROPRIATE DIISCIPLINE SHEETS FOR IMPROVEMENTS. 3. FOR COMPLETFt LISTING MONUMENTS SUR'$'EYED SEE NUMBER G402GVg5. OF ROW DRAWING R/W NO. TUK 1- 1 REC. NO. 8008130427, SLOPE ESMT. TO KING COUNTY R/W NO.TUK-146 ( 2223049059 GUERZON, MICHAEL J. A)I N64.AM ICS TO PRE -19647 Y4 CORNER MON. N 273599.21 E 1384940.53 QUIT CLAIM DEED REC. NO. 7912310995 MENTIONS CREEK MAINTENANCE TO KING COUNTY, BUT NO DESCRIPTION OR WIDTH OF THE ESMT 112 PROI OED. V FOR R REQUIREMENT ALONG SOUTH CENTER BLVD Ss DWG NO. '2RP07 X15' ELECTRIC ESMT. TO PACIFIC NW BELL, REC. NO. 7908280703. _ z_ - 15' PERMANENT EASEMENT FOR STORM SEWER & ACCESS . -��c---..'-�.'. %'.' � "'s„ • 52� ►mss'-� ---��� 404-00 SOUTHCEN TER BLVD BeI3r44 J SEE DWG R402RP06 Designed By. R.HUFF Drawn By. H.NOVACEK Checked By: E. BONE No. Date Dsn. Chk. App. Revisions Approved By: A. MARWAHA LIGHT RAIL GUIDEWAY _(TTP.) — SEESACT C755 SEE DWG R402RP07 SEE DWG R402RP08 NW 1/4 SE 1/4 SEC 22, T 23 N, R 4 E; W.M. five ©MM Lai & ASSOCIATES, INC. Consulting Engineers Seattle, Washington imim Scale: Filename: s59_Ws_waoJZPOI.dwy SOUNDTRANSIT I "=50' Contract No.: C 759 Submitted: Date: Approved: Dote: Date: 09/15/06 -- 50 25 0 50 100 LINK LIGHT RAIL F(44 -Jt SOUTH CORRID1/14) w4o_RP01 OR SCALE IN FEET Drawing No.: SOUTHCENTER BL j' 2 REGIONAL DETENTIO�D 46 4106 RIGHT-OF-WAY ppN14 Sheet No.: Rev.: 279 0