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HomeMy WebLinkAboutSWP272149(5) STATg Off, 4 4 O y S �H� IAA9�O STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6006 September 29, 1995 Mr. Scott Woodbury OCT 41995 City of Renton TON 200 Mill Avenue South, Fourth Floor CIT`� eeOF'ng Dept Renton WA 98055 Engineering Dept. RE: Revised Water Quality Certification Order # 94-4-00274, Modification #3 Dear Mr. Woodbury: The initial water quality certification for the above-referenced project was issued on June 22, 1994. Per your request, the Hydraulic Project Approval (HPA) for the project has been revised to allow an extended time period for project construction. The revised HPA is hereby incorporated into the project's water quality certification. Condition #4 of the certification is changed to allow work under the certification to take place immediately I until October 19, 1995. All other conditions of the original water quality certification remain in effect. If you have any questions about this revision, please contact Tom Luster of my staff at (360) 407- 6918. Sincerely, James J. Pendowski, Supervisor Environmental Review and Sediment Section JJP:t1 cc: Jim Green, COE Phil Schneider, WDFW Gary Voerman, EPA Dennis Carlson, USFW Ben Meyer, NMFS Rod Malcom, Muckelshoot Tribe Bob Newman, Ecology v# CIO* STATg O� 0 4 T STATE OF WASHINGTON DEPARTMENT OF ECOLOGY ' P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6(f v „� ;95 September 8, 1995 Mr. Scott Woodbury City of Renton 200 Mill Avenue South, Fourth Floor Renton WA 98055 RE: Revised Water Quality Certification Order # 94-4-00274, Modification #2 Dear Mr. Woodbury: The initial water quality certification for the above-referenced project was issued on June 22, 1994. Per your request, the Hydraulic Project Approval (HPA) for the project has been revised to allow an extended time period for project construction. The revised HPA is hereby incorporated into the project's water quality certification. Condition #4 of the certification is changed to allow work under the certification to take place immediately until October 1, 1995. All other conditions of the original water quality certification remain in effect. If you have any questions about this revision, please contact Tom Luster of my staff at (360) 407-6918. Sincerely, James J. Pendowski, Supervisor Environmental Review and Sediment Section JJP:tl cc: Jim Green, COE Phil Schneider, WDFW Gary Voerman, EPA Dennis Carlson, USFW Ben Meyer, NMFS Rod Malcom, Muckelshoot Tribe Bob Newman, Ecology 4"0 CITY OF RENTON ;7R Planning/Building/Public Works Department Earl Clymer,Mayor Gregg Zimmerman P.E.,Administrator September 1, 1995 Tom Luster Washington State Department of Ecology P.O. Box 47600 Olympia, WA 98504-7600 SUBJECT: WATER QUALITY CERTIFICATION #94-4-00274 EXCAVATE AND PLACE MATERIAL IN SPRINGBROOK CREEK, RENTON, KING COUNTY, WASHINGTON REQUEST FOR TIME EXTENSION Dear Mr. Luster: As I discussed with you in our recent telephone conversation, please extend the water quality certification for the above-referenced project from the current expiration date of September 15, 1995, to a revised expiration date of October 1, 1995. This is consistent with extensions of the Hydraulic Project Approval (HPA) and Water Quality Modification (WQM) permits recently issued or pending for the project from the Washington State Departments of Fish and Wildlife and Ecology. A copy of the HPA permit extension is attached. I will fax the WQM extension as soon as I have received a copy. Mary Kautz of the regional Ecology office in Bellevue told me today that the WQM permit extension will be issued next week. Your assistance in extending the certification is appreciated. Please fax a copy of the extension to (206) 235-2541 as soon as possible. If you have any questions, please call me at (206) 277-5547. Sincerely, 7 � Scott Woodbury, P.E., Pr7ect Manager Surface Water Utility H:DOCS:95-738:SW:ps Attachments CC: Rod DenHerder Ron Straka 200 Mill Avenue South - Renton, Washington 98055 ® This paper contains 50%recycled material,25%post consumer AUG 29 '95 01:34PM DEPT FISHERIES P.2 HYDRAULIC PROJECT ,. ..` APPROVAL DEPARTMENT OF FISHERIES R.C.W. 75 . 20 . 100 General Administration Bldg. R.C.W. 75 .2 0 . 103 Olympia, Washington 98504 August 29, 1995 (206) 753-6650 DEPARTMENT OF, FISHERIES (applicant should refer to this datc in all correspondence) PAGE 1 OF 2 PAGES 10 LAST NAME FIRST 18 CONTACT PHONE(S) 1 CONTROL NUMBER City of Renton (206) 277-5547 00-95498-04 19 STREET OR RURAL ROUTE ]� L=J U 0I . 0 0 0 5 200 Mill Ave . S, 4th Floor, ATTN: S . ' Woodbury CITY STATE 98055ZIP 14 17 Renton WA 12 ATER T 1BUTARY TO 11 TYPE 0 PRQJECT Springbrook Creek Green River Channel Change_ 13 UARTER SECTION TOWNSHIP RANGE(E-W) COUNTY SECTION_ NE __ 24 __ 23N____— __ King r- ---- P THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY TIME LIMITATIONS : Immediately October 1, 1995 THIS APPROVAL IS TO BE AVAILABLE OM THE JOB SITEAT ALL TIKES AND ITS PROVISIONS FOL 04 WE0 pY THE PERNITTEE AND OPERATOR PERFORMING THE WOkK. su impoRTA GUERA1 PRQYISIONS ON REVERSE SIDE OF APPROVE NOTE: This Hydraulic Protect Approval (HPA) is a renewal of the original HPA issued on April 24, 1994 , last modified on June 12, 1995 . This HPA is in response to a vebal request by Scott . Woodbury, of City of Renton Public Works on August 28, 1995, and it supersedes all previous HPAS and modifications for this project . This HPA is written to reconstruct and divert 215-feet o channel to an existing I-405 culvert . It also includes 50-feet of new channel north of I-405 box culverts, channel widening, bank protection, habitat structures, and revegetation. 1 . A temporary bypass or flume shall be in place prior to commencement of work . 2 • the inlet toor similar be installed 3 . A sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area . 4 . The culvert or flume shall be of sufficient size to pass flows and debris occurring during the project . S . Prior to releasing the water flow to the project area, all work within the new channel shall be completed. 6 . Water that has seeped into the work site shall be pumped to an area SEPA: MDNS, City of Renton, March 1994 REGIONAL HABITAT ANAGER - Phil Schneider (206) 775-1311, Ext . 107 PATROL - Such 121 [P2] APPLICANT - WILDLIFE - READER • PATROL - NAB. MOR. - WRIA DEPARTMENT OF FISHERIES DIRECTOR AUG 29 '95 01:34PN DEPT FISHERIES P•3 HYDRAVLIC PROJECT > APPROVAL DEPARTMENT OF FISHERIES R.C.W. 75 . 20 . 100 General Administration Bldg. R.C.W. 75 .20 . 103 Olympia, Washington 98504 �] August 29, 1995 (206) 753-6650 oEPARTlfENT Of FISHERIES (applicant should refer to this date in all correspondence) PACEJZ OF 2 PAGES i0 LAST NAME 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 00-95498-04 12 WATERSpringbrook Creek g uRtA 09 . 0005 to allow settlin . of fines before entering the stream, or otherwise contained so as o prevent any siltation from entering the stream. 7 . If pumps are used to bypass the stream around the work area, the inlet hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. 8 . Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Rank protection material shall be, angular rock or other material of a sufficient size to prevent its being washed away by water action. 10 . Overburden material resulting from this project shall be deposited so as not to reenter the water. 11. . Work shall stop if distressed or dead fish are observed in the bypass reach. The Washington Department of Fish and Wildlife (WDFW) shall be notified immediately. 12 . Prior to starting work the contractor shall submit the erosion control plan to WDFW, that includes the plan to bypass the work area during all phases of the project. 13 . At least one (1) week prior to starting this pproject contact Philip Schneider, Area Habitrat Biologist, at (206) 775-1311, extension 107 . 14 . Work shall conform to plans and sppecifications submitted with the Hydraulic Project application including the revised planting plan that replaces sheet 7 of 16 of the original plans . . 15 . At no time shall there be a complete blockage of flow and the new channel shall filled in a manner that will minimize the flow impacts downstream. 16 . The bridge shall be placed and removed by equipment operating from the banks.. 17 . Curbs or wheel guards shall be located in a manner that will control dirt, debris, etc . , from wasting into the water. 18 . Ap roach material shall be structurally stable and be composed of ma?erial that, if eroded into the water, will not be detrimental to fish life . LOCATION: I-405 and Oaksdale Ave . SW in Renton. Attachment : REV 10/16/88 AUG 29 '95 01:35PM DEPT FISHERIES P.4 Attachment (00-95498-04) THIS HYDRAULIC PROJECT APPROVAL IS TO BE AVAILABLE ON THE JOB SITE_ AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. THE PERSON(S) TO WHOM THIS HYDRAULIC PROJECT APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE AND/OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 . 20 . 100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS OR REVOCATION IF THE DEPARTMENT OF FISHERIES OR WILDLIFE DETERMINE THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34 . 04 RCW TO APPEAL SUCH DECISIONS . ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 , 20 . 103 MAY BE MODIFIED BY THE DEPARTMENT OF FISHERIES OR WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE : PROVIDED HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 7S . 20 . 130 . THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES CODE (RCW 75 . 20) . ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE, A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-110-340) CONSISTS OF CONTACTING THE REGIONAL HABITAT MANAGER AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL, BUT IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE CHIEF OF THE HABITAT MANAGEMENT DIVISION IN OLYMPIA. THE HABITAT MANAGEMENT DIVISION CHIEF'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOUR ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAL APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER EPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSION, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPROVAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350) . 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN EPA ASSOCIATED WITH IRRIGATION OR STOCK- WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE HYDRAULIC APPEALS BOARD PER WAC 259-04 • THE MAILING ADDRESS LOCEYHE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO - ROWE SIX, WASHINGTON 98504; TELEPHONE 206/459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEALING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. s'rare o � yy m 0 '�IPPP a STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (206)407-6000 • TDD Only(Hearing Impaired)(206)407-6006 August 25, 1994 D (� Will City of Renton sip? 1 - 1994 Surface Water Utility 200 Mill Avenue South, Fourth Floor CITY OF RENTON Renton, WA 98055 Engineering Dept, ATTN: Mr. Scott Woodbury Re: Water Quality Certification #94-4-00274 -- Revision Excavate and place material in Springbrook Creek, Renton, King County, Washington. Dear Mr. Woodbury: Water quality certification for the above-referenced project was issued on June 22, 1994. Per your request, the Hydraulic Project Approval (HPA) for the project has been revised to allow an extended time period for project construction. The revised HPA is hereby incorporated into the project's water quality certification. Condition #4 of the certification is changed to allow work under the certification to take place between June 15, 1995 and September 15, 1995. All other conditions of the original water quality certification remain in effect. Please contact Tom Luster of my staff at (206) 407- 6918 if you have any questions. Sincerely, -; � - <P�I� Keith E. Phillips, Supervisor Environmental Review and Sediment Management Section KEP:trl Enclosure cc: Corps of Engineers -- Jim Green EPA, Seattle -- Gary Voerman U.S. Fish & Wildlife Service -- Dennis Carlson National Marine Fisheries Service -- Ben Meyer Muckleshoot Tribe -- Rod Malcolm Ecology, Northwest Regional Office -- Bob Newman WDFW -- Phil Schneider 206 235 2541 0811 22/94 08:30 FAA 206 235 2541 RENTON P/B/PW laool D C ITT E 5 7 atF 0 "�tl o SEP 1 e 1994 CITY OF RENTON y�7BB9 � Engineering Dept. State of Washington DEPARTMENT OF FISH AND WILDLIFE Mailing Address- 600 Capitol Way N, Olympia, WA 98501-1091 - (206) 902-2200: TDD (206) 902-2207 Main Office l-ocation: Natural Resources Building, 1111 Washington Street SE, Olympia, WA August 9, 1994 City of Renton ATTENTION: Scott Woodbury 200 Mill Avenue South NUG 121994 4th Floor Renton, Washington 98055 CITY ()V REN-TON Engineering Dept. Dear Mr. Woodbury: RE: Hydraulic Project Approval, April 29, 1-994, Channel Change, Bank Proection, Outfall, Springbrook Creek, King County, WRIA 09, Control Number 01-95498-02 A representative of this department has reviewed the referenced Hydraulic Project Approval, and the time limitations shall be changed to: June 15, 1995 to September 15, 1995 All other provisions of the original approval and amendments shall remain as written, and this letter shall be attached and on the job site at all times. Sincerely, AX TRANSMITTAL MEMO r_ obert Irner F pQDQUJ� Director �"GY►n t-" RT:ch FAX 41 FAX . cc: Jim Suda • STATg O. o � x t889 d� STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O.BOX 47600 • Olympia, Washington 98504-7600 • (2 June 22, 1994 JUN 2 7 1994 City of Renton Surface Water Utility CITY OF RENTON 200 Mill Avenue South, Fourth Floor Engineering Dept. Renton, WA 98055 ATTN: Mr. Scott Woodbury RE: Water Quality Certification Public Notice No. 94-4-00274 Excavate and place material in Springbrook Creek, Renton, King County, Washington. Dear Mr. Woodbury: The public notice for this proposed Corps of Engineers Section 10 and Section 404 permit has been reviewed in accordance with all pertinent rules and regulations. The proposed project entails excavating 2,100 cubic yards of material and placing 1,700 cubic yards of material to increase flood conveyance and storage, repair an undercut streambank, minimize erosion, and provide fish habitat, in Springbrook Creek, Renton, King County, Washington. The state of Washington certifies that these activities comply with applicable provisions of sections 301, 302, 303, 306, and 307 of the Federal Clean Water Act as amended, and other appropriate requirements of State law. This certification is subject to compliance with the applicable provisions of the enclosed Hydraulic Project Approval (HPA) from the Washington Department of Fish and Wildlife, the water quality modification from the Department of Ecology (Ecology), and the following: General: 1) Work in or near the waterway shall be done so as to minimize turbidity, erosion, and other water quality impacts. 2) Water quality standards pertaining to Springbrook Creek (Class A) shall apply to this project except as otherwise specifically authorized by this certification and by water quality modification #DE 94WQ-N251. 3) Care shall be taken to prevent any petroleum products, chemicals, or other toxic or deleterious materials from entering the water. If an oil sheen or distressed or dying fish are observed in the project vicinity, the operator shall cease immediately and notify Ecology of such conditions. Contact Ecology's Northwest Regional Spill Response Office at (206) 649-7000. m IS 00 Water Quality Certification #94-4-00274 June 22, 1994 Page 2 4) This certification is valid for through September 15, 1994 (per HPA). Work to be done after that date will require an extension or re-certification of this project. Additional conditions may be added to this certification at any time, or certification may be withdrawn, if project construction or operation results in detrimental effects to the waters of the state or if designated uses of the waterbody are adversely impacted. This project may also require further review and approval by Ecology if construction is slated to occur beyond the time limits of the water quality modification. Construction: 5) Project construction, operations, and ongoing maintenance shall be consistent with the technical guidelines contained in the latest version of Ecology's Stormwater Management Manual. 6) All construction debris shall be properly disposed of on land so that it cannot enter the waterway or cause water quality degradation to state waters. Mitigation: 7) Project mitigation as described in the Corps' Public Notice is meant to provide additional fish habitat and to enhance existing habitat. The project shall include mitigation as described in the Public Notice, with the following changes: * to provide better fish resting areas within the channel, two of the three boulder/rock habitat structures will be replaced with woody debris habitat structures. The replacement structures shall match the detail drawings in the Public Notice (page 14). * all planted vegetation, physical structures and other habitat enhancements shall be protected and maintained. This maintenance shall include the replanting of vegetation in areas where plantings have failed to survive. All revegetation areas shall be surveyed after one year to determine the success of the plantings. A 75% survival rate shall be considered sufficient to meet the success criteria for this planting. All dead or dying plants shall be replaced as needed. Water Quality Certification #94-4-00274 June 22, 1994 Page 3 Please note this certification does not exempt, and is provisional upon compliance with, other statutes and codes administered by federal, state and local agencies. Please contact Tom Luster of my staff at (206) 407-6918 if you have any questions regarding this certification. Sincerely, Keith E. Phillips, Supervisor / Environmental Review and Sediment Management Section KEP:tI Enclosures: HPA #01-95498-01 Water Quality Modification #DE 94WQ-N251 cc: Corps of Engineers -- Jim Green U.S. EPA, Seattle -- Justine Barton U.S. Fish & Wildlife Service -- Dennis Carlson National Marine Fisheries Service -- Ben Meyer Muckleshoot Tribe -- Rod Malcolm WA Dept. of Ecology, Shorelands Program -- Linda Rankin WA Dept. of Ecology, Northwest Regional Office -- Mary Kautz WA Dept. of Fish and Wildlife -- Phil Schneider M/03/04 15:51 FAX 206 235 2541 RENTON P/B/PW Z 002 HYDRAULIC PROJECT DEPARTMENT Of WILDLIFE 600 CAPITOL WAY N. APPROVAL OLY14PIA WASHINGTON 98601-1091 A(R. C.W. 7 5 . 2 0 . 10 0) (zm) 753-5897 C.W. 75. 20. 103 ) Q April 29_, 1994 (applicant should refer to this date in all correspaxlence) PAGE 1 OF 2 PAGES yp 1$ CONTACT PHONE(S) (CONTROL NL949ER CitAL y of 206 277-5547 01-95498-01 0 Mill Ave , S. , 4th Floor, Attn: Scott Woodbury 9 F as49A CITY STATE ZIP 14 75 n WA 98055 76 06 TER TRIBUTARY TO 11 TYPE OF PROJECT ringhrnQk Creek Green River_ Char;!nel Chafe—— r SECTION _ TO"SHIP RANGECE-W) CMMTY__ "MORE 24 23N 04E Ring Hank Protection --- ----------- ----- — --- -- ----------- Outfall IM LI1[ITATIONS: G THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY June 15 1994 September 15 1994 TNIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PggyvisiaMS FOLLOWED BY THJi ' PERMITTFE ANQ OPERATOR PERFORMING THE WORK- fiE XUPORTANT GENERAL PROVISIONS ON REVERSE SIDE THAT ARE ALSO PART OF THIS APPROVAL. Proje�t Description: Reconstruct and divert 215 feet of new channel to x ssstin 1-405 culvert; also includes 50-feet of new channel north of 1-405, box culverts channel widening, bank protection, habitat structures, and revege�ation. 1. A temporary bypass or flume shall be in place prior to commence- nont of work. �. A sandbag revetment or similar device shall be installed at the inlet to divert the entire flow through the culvert or flume- 3 . 1� sandbag revetment or similar device shall be installed at the ownsstream end of the culvert or flume to prevent backwater From antering the work area. 4 . Culvert or flume shall be of sufficient size. to pass flows and debris occurring during the project. S. P for to releasing the water flow to the project area, all work w thin the new channel shall be completed. 6. Water that has seeped into the work site shall be pumped to an area to allow setting of fines before entering the stream, or otherwise contained so as to prevent any siltation from entering the stream- UpA:MDNS, City of Renton, March 1994 WSITAV BIOLOGIST: Phil Schneider (206) 775-1311, ext. 107 AWMT:JiM Suda P2 MAY �' 1994 APPLICANT - FISHERIES - AGENT - INVESTIGATOR - REGION - OLYMPIA: Ir LammOF WILDLIFE n inoD TOR 00/03/N 15:52 FAX 206 235 2541 RENTON P/B/PW a 003 ...prow.—• -- -- HYDRAULIC PROJECT APPROVAL April 29, 1994 (applicant should refer to this date in all aorrespondimce) PAGE 2 OF 2 PAGES CONTROL NUMBER f, City of 01-95498-01 7. ! numms are used to bypass the stream around the work area, the t►IS hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. bapk protection material shall not appreciably reduce normal era recourse capacity or configuration. *. � protection material shall be angvilar rock or other material ef' -sufficient size -to prevent its being washed sway by -water a . etT©n. W Overburden material resultin from this project shall. be deposited so as not to re-enter the wa er. It. Mork shall stop if distressed or dead fish are observed in the bypass reach. The Department shall be notified immediately. 12. Prior to starting work, the contractor shall submit to the p� artment of Fish and Wildlife the erosion control plan that ?:bJudes the plan to bypass the work area during all phases of the pro act. 13* t least one week prior to starting this project, contact ilip Schneider at (206) 775-1311, extension 107 . 14. !Work shall conform to plans and sppecifications submitted with the hydraulic project application including the revised planting plan that replaces sheet 7 of 16 of the original plans. 15. At no time shall there be a complete blockage of flow, and the t,4+ channel shall be filled in a manner that will minimize the flaw impacts downstream. U)MTION: 1--405 and oaksdale Avenue S.W. in Renton Vc: Millard Deusen j ATg O � F Y s s yr �? ,y oy t .kry STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office, 3190- 160th Ave. S.E. • Bellevue, Washington 98008-5452 (206)649-7000 MAY Z 4 t994 CERTIFIED MAIL P 311 404 088 City of Renton Surface Water Utility Planning/Building/Public Works Department 200 Mill Avenue South Renton, WA 98055 Gentlemen: Enclosed is Order No. DE 94WQ-N251. All correspondence relating to this document should be directed to the Enforcement Coordinator, Department of Ecology, Northwest Regional Office, 3190 - 160th Avenue, Bellevue, WA 98008-5452. If you have any questions concerning the content of the document, please call Mary Kautz, telephone 649- 7036. The enclosed Order may be appealed. The appeal procedures are described in the Order. Sincerely, Carla J. Skog Enforcement Coordinator Water Quality Section CJS:jo Enclosure cc: Central Programs Enforcement Unit Public Information Office z. '18 Y DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton ) ORDER for Temporary Modification of ) No. DE 94WQ-N251 Water Quality Standards ) (Springbrook Creek) ) To: City of Renton Surface Water Utility Planning/Building/Public Works Department 200 Mill Avenue South Renton, WA 98055 The City of Renton Surface Water Utility submitted an application for a Short-Term Modification of the Water Quality Standards for the waters of Springbrook Creek, King County. The purpose of the project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel constructed north of SW 16th Street which began in 1984 with the assistance of the U.S. Department Agriculture Soil Conservation Service. The channel improvements will include removal of fill that is blocking the I-405 box culvert, stabilization of the streambank to control erosion and sedimentation, rip rap, construction of a pedestrian trail and riparian plantings and placement of in-stream rock and root wads for fish habitat enhancement. In view of the foregoing and in accordance with RCW 90.48.120(2): IT IS ORDERED that the water quality criteria specified in WAC 173-201A-030(2)(c)(vi) shall be modified between June 15, 1994 and September 15, 1994. This water quality modification is subject to the attached conditions. The department retains continuing jurisdiction to make modifications hereto through supplemental order, if it appears necessary to further protect the public interest during the modification period. Failure to comply with this Order may result in the issuance of civil penalties or other actions, whether administrative or judicial, to enforce the terms of this Order. This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board, P.O. Box 40903, Olympia, WA 98504-40903 within thirty (30) days of your receipt of this Order. At the same time, your appeal m u",t also be sent to the Department of Ecology, c/o Enforcement Officer, P.O. Box 47600, Olympia, WA 98504-7600 and the Northwest Regional Office, 3190 160th Avenue SE, Bellevue, WA 985452. Stay requests must be submitted in accordance with RCW 43.21B.320. These procedures are consistent with Chapter 43.21B RCW. MAY 1 4 t994 DATED at Bellevue, Washington hn�H. Glylh Water Quty ali Supervisor Northwest Regional Office Order No. DE 94WQ-N251 Temporary Water Quality Modification City of Renton Surface Water Utility I-405 Box Culvert/P-1 Channel Improvement Project Springbrook Creek (Rivermile 0.5 - 0.7) Location: SW 16 Street on the south, SW Grady Way on the north and the I-405 Oakesdale Avenue SW underpass on the east, SE /14 and NE 1/4 of Section 24, Township 23 North, Range 4 East, W.M., in King County, Washington. CONDITIONS GENERAL 1. The water quality standards affecting Springbrook Creek, (Class A) shall apply except where modified for turbidity, from River Mile 0.5 downstream a distance of 200 feet. 2. The Water Quality Standards for turbidity are modified for the period between June 15, 1994 and September 15, 1994. Any work taking place outside of the time period will require an Order amendment from Ecology after obtaining an extension from the Department of Fish and Wildlife. 3. The project activities must comply with all conditions contained in the Washington State Department of Fish and Wildlife Hydraulic Project Approval, Control No. 01- 95498-01. 4. This approval does not relieve the applicant from the responsibility of meeting applicable regulations of other agencies. 5. Ecology retains continuing jurisdiction to make modification(s) through supplemental Order, if it appears necessary to protect the public interest during the modification period. 6. Copies of this Order shall be kept on the job site and readily available for reference by the City of Renton personnel, the construction superintendent, construction managers and foremen, and state and local government inspectors. CONSTRUCTION ACTIVITIES The construction contractor shall use all reasonable measures to minimize the impacts of construction activity on waters of the state. Water quality constituents of particular concern are turbidity, suspended sediment, settleable solids, pH and oil and grease. Required mitigation measures include, but are not limited to, the following: 1 Conditions - Order No. DE 94WQ-N251 1. The contractor shall follow and implement all specifications for erosion and sediment control specified in the contract documents. Adjustments to planned erosion and sediment control may be necessary to successfully control off site movement of material not covered under this modification. 2. All construction debris shall be properly disposed of on land in such a manner that it cannot enter into the waterway or cause water quality degradation to state waters. 3. Dewatering water that is not turbid may be discharged directly to the stream channel. The discharge outfall shall be designed and operated so as to not cause erosion or scour in the stream channel. 4. Turbid water generated from construction activities, including turbid dewatering water, shall not be discharged directly into Springbrook Creek and its tributaries. Temporary sediment traps (or biofiltration swales) shall be used to allow the turbid water to settle for a minimum of two hours before discharge. 5. Proper erosion and sediment control practices shall be used on the construction right- of-way and adjacent areas to prevent upland sediments from entering the stream channel. 6. All areas disturbed or newly created by the project construction will be seeded, riprapped with clean, durable riprap, or given some other equivalent type of protection against erosion. 7. Approach material shall be of clean composition and placed in a manner to prevent erosion, and siltation that might result from high water and/or heavy rains. 8. All planned sediment and erosion control measures shall be adjusted to meet field conditions at the time of construction. Periodic inspection and maintenance shall be conducted at the end of each working day and after any significant rainfall to insure sediment control measures are in working condition. Any damaged devices shall be repaired immediately. 9. Riprap shall be clean and durable, free from dirt, sand, clay, and rock fines. 10. Work in or near the waterway shall be done so as to minimize turbidity, erosion, other water quality impacts and stream bed deformation. 11. Properly dispose of all construction debris on land in such a manner that it cannot enter into the waterway or cause water quality degradation to state waters. 2 R . Conditions - Order No. DE 94WQ-N251 12. Excess excavated material shall be transported and disposed of in a manner that prevents the spoils from entering state waters and prevents leachates or drainage from the spoils from degrading water quality. Excavated material shall not be stockpiled on a temporary or permanent basis below the high water line. 13. When working in water, all digging passes shall be completed without any material, once in the bucket, being returned to the waterway. 14. Extreme care shall be taken to prevent any petroleum products fresh cement, lime, or concrete, chemicals, or other toxic or deleterious materials from entering the water in any manner. WATER QUALITY 1. Turbidity levels in the receiving stream at all points outside the specified area shall comply with WAC 173-201A, Water Quality Standards. 2. There shall be no visible sheen from petroleum products in the water at any time during the project. MONITORING 1. Ecology may require sampling and analysis at any time for other constituents during the project. POLLUTION CONTROL INSPECTIONS 1. A Pollution Control Inspector shall be made available to supervise implementation of the Erosion and Sediment Control Plan. 2. The Pollution Control Inspector shall be on site or on call, and be readily accessible to the site at all times while construction activities are occurring that may affect the quality of ground and surface waters of the state,, including all periods of construction activities. 3. The Pollution Control Inspector shall have adequate authority to ensure proper implementation of the Erosion and Sediment Control Plan, as well as immediate corrective actions necessary because of changing field conditions. SPILLS 1. RCW 90.56 prohibits any discharge of oil, fuel or chemicals into state waters, or onto land with a potential for entry into state waters. 3 Conditions - Order No. DE 94WQ-N251 2. All oil, fuel or chemical storage tanks shall be diked and located on impervious surfaces so as to prevent spills from escaping to surface waters or ground waters of the state. 3. Fuel hoses, oil drums, oil or fuel transfer valves and fittings, etc., shall be checked regularly for drips or leaks, and shall be maintained and stored properly to prevent spills into state waters. Proper security shall be maintained to prevent vandalism. 4. In the event of a discharge of oil, fuel or chemicals into state waters, or onto land with a potential for entry into state waters, containment and clean-up efforts shall begin immediately and be completed as soon as possible, taking precedence over normal work. Clean-up shall include proper disposal of any spilled material and used clean-up materials. 5. Spills into state waters, spills onto land with a potential or entry into state waters, or other significant water quality impacts, shall be reported immediately to the Department of Ecology Northwest Regional Office at (206) 649-7000 (24-hour telephone number). 6. No emulsifiers or dispersants are to be used in waters of the state without approval from the Department of Ecology Northwest Regional Office. NOTIFICATION 1. Water Quality Inspector for Ecology (Mary Kautz), must be notified at (206) 649- 7036, at least 24 hours prior to commencement of this work and at completion of the project. 2. If distressed or dead fish are noticed in the vicinity , the proponent shall immediately notify the Department of Ecology, Northwest Regional Office at (206) 649-7000, and take immediate action to identify and eliminate toxic sources causing the problem. 4 r This notice of authorization must be conspicuously displayed at the si-fle of wo.rk. United States Army Corps-of Engineers !` CC'TS.TPUCT A N71.1 TIAIN FLO 7 ..,`.`111TIIF AND N°I;ITAIPT AN M7=TING u 7*n1 U r E r n 2 100 CU?°IC „n,.nc OF 1iATr-'.IF.T,, THE 1 9 �,,, T C..A.dN,_,L, • 'ICAVAT ION , ?T,AC .!,FNT OF 1 ,700 CUBIC YARDS OF SrLFCT FIT L MATERIAL, F: THE PT,r C Eil7T?T OF FIS°-I ?`ABITAT STrIUCTUaES (I ICRFASE FLWD W-�V.i iA.14':. c °TO^./G ,R.7PA1 . IINIL CUT A permit to ST?:FA1fl31NNK., .MINIMIZE EROSION, �?:1) Pi 0`1TD.` r IS'I IIARITAT TpUCTURFS) TI; S.P--IN-3ZOOK CREEK- at gENTON 11ASli l�T OO v Jt; has been issued to CTTY OF DrNTOF - on 200 r'TT T.T. n` 4TT^ 4(TT H. "f)TTRT T T T (1(1T? �* *TmnTr rTa Address of Permittee 0 T - Permit Number -'r � y,.,����',._ ��.•-, �, -. - q '1cRln:�ATT�' 'r 91,_�._Or,27�} Drstnct CommandeY T.,T. COT,ONET Or 'i ENG FORM 4336 , Jul 81 (ER 1145-2-303) EDITION OF JUL 70 MAY BE USED (Proponent: DAEN-CWO) DEPARTMENT OF THE ARMY PERMIT Permittee: City of Renton Permit No. : 94-4-00274 Issuing Office: Seattle District Note: The term "you" and its derivatives, as used in this permit, means the permittee or any future transferee. The term "this office" refers to the appropriate district or division office of the Corps of Engineers having jurisdiction over the permitted activity or the appropriate official of that office acting under the authority of the commanding officer. You are authorized to perform work in accordance with the terms and conditions specified below. Project Description: Construct a new main flow channel and maintain an existing flow channel, excavate 2, 100 cubic yards of material, place 1,700 cubic yards of select fill material, and place fish habitat structures in accordance with the plans and drawings attached hereto which are incorporated in and made a part of this permit (increase flood conveyance and storage, repair undercut streambank, minimize erosion, and provide fish habitat structures) . Project Location: in Springbrook Creek at Renton, King County, Washington. Permit Conditions: General Conditions: Jill! 2 9 1997 1. The time limit for completing the work authorized ends on If you find that you need more time to complete the authorized activity, submit your request for a time extension to this office for consideration at least one month before the above date is reached. 2 . You must maintain the activity authorized by this permit in good condition and in accordance with the terms and conditions of this permit. You are not relieved of this requirement if you abandon the permitted activity, although you may make a good faith transfer to a third party in compliance with General Condition 4 below. Should you wish to cease to maintain the authorized activity or should you desire to abandon it without a good faith transfer, you must obtain a modification to this permit form this office, which may require restoration of the area. 3 . If you discover any previously unknown historic or archeological remains while accomplishing the activity authorized by this permit, you must immediately notify this office of what you have found. We will initiate the Federal and state coordination required to determine if the remains warrant a recovery effort or if the site is eligible for listing in the National Register of Historic Places. 4. If you sell the property associated with this permit, you must obtain the signature of the new owner in the space provided and forward a copy of the permit to this office to validate the transfer of this authorization. 1 5. If a conditioned water quality certification has been issued for your project, you must comply with the conditions specified in the certification as special conditions to this permit. For your convenience, a copy of the certification is attached if it contains such conditions. 6. You must allow representatives from this office to inspect the authorized activity at any time deemed necessary to ensure that it is being or has been accomplished in accordance with the terms and conditions of your permit. Special Conditions: a. You must provide a copy of the permit transmittal letter, the permit form, and drawings to all contractors performing any of the authorized work. b. You must coordinate and obtain approval from METRO for any activities that will affect METRO's facilities. C. There shall be four woody debris habitat structures and one boulder/rock habitat structure installed. d. You must comply with the provisions of the attached Water Quality Certification. Further Information: 1. Congressional Authorities: You have been authorized to undertake the activity described above pursuant to: ( ) Section 10 of the Rivers and Harbor Act of 1899 (33 U.S.C. 403) . (X) Section 404 of the Clean Water Act (33 U.S.C. 1344) . ( ) Section 103 of the Marine Protection, Research and Sanctuaries Act of 1972 (33 U.S.0 1413) . 2 . Limits of this authorization. a. This permit does not obviate the need to obtain other Federal, state, or local authorization required by law. b. This permit does not grant any property rights or exclusive privileges. C. This permit does not authorize any injury to the property or rights of others. d. This permit does not authorize interference with any existing or proposed Federal project. 3 . Limits of Federal Liability. In issuing this permit, the Federal Government does not assume any liability for the following: a. Damages to the permitted project or uses thereof as a result of other permitted activities or from natural causes. b. Damages to the permitted project or uses thereof as a result of current or future activities undertaken by or on behalf of the United States in the public interest. C. Damages to persons, property, or to other permitted or unpermitted activities or structures caused by the activity authorized by this permit. d. Design or construction deficiencies associated with the permitted work. 2 e. Damage claims associated with any future modification, suspension, or revocation of this permit. 4. Reliance on Applicant's Data: The determination of this office that issuance of this permit is not contrary to the public interest was made in reliance on the information you provided. 5. Reevaluation of Permit Decision. This office may reevaluate its decision on this permit at any time the circumstances warrant. Circumstances that could require include, but are not limited to, the following: a. You fail to comply with the terms and conditions of the permit. b. The information provided by you in support of your application proves to have been false, incomplete, or inaccurate (See 4 above) . C. Significant new information surfaces which this office did not consider in reaching the original public interest decision. Such a reevaluation may result in a determination that it is appropriate to use the suspension, modification, and revocation procedures contained in 33 CFR 325.7 or enforcement procedures such as those contained in 33 CFR 326.4 and 326.5. The referenced enforcement procedures provide for the issuance of an administrative order requiring you to comply with the terms and conditions of your permit and for the initiation of legal action where appropriate. You will be required to pay for any corrective measures ordered by this office, and if you fail to comply with such directive, this office may in certain situations (such as those specified in 33 CFR 209 .170) accomplish the corrective measures by contract or otherwise and bill you for the cost. 6. Extensions. General condition 1 establishes a time limit for the completion of the activity authorized by this permit. Unless there are circumstances requiring either a prompt completion of the authorized activity or a reevaluation of the public interest decision, the Corps will normally give favorable consideration to a request for an extension of this time limit. Your signature below, as permittee, indicates that you accept and agree to comply with the terms and conditions of this permit. CITY OF RENTON " (�A7 �Z �t- (DATE) This permit becomes effective when the Federal official, designated to act for the Secretary of the Army, has signed below. TEN N. ORNE (DATE) It. Co nel, Corps of En eers i Distr' t Engineer When the structures or work authorized by this permit are still in existence at the time the property is transferred, the terms and conditions of this permit will continue to be binding on the new owner(s) of the property. To validate the transfer of this permit 3 and the associated liabilities associated with compliance with its terms and conditions, have the transferee sign and date below. (TRANSFEREE) (DATE) 4 Certification of Compliance with Department of the Army Permit Permit Number: 94-4-00274 Name of PerMIttee RENTON, CITY OF Date of Issuance: JUN 2 9 1994 Upon completion of the activity authorized by this permit, sign this certification and return it to the following akddr"$: Department of the Army Seattle District, Corps of Engineers Regulatory Branch Post Office Box C-3735 Seattle, WA 18124-2235 Please rM2 a that Youz D-aittad activity is subject to a oompliarm inspection by an gray corps of Engineers . Googly with this permit you are "jsct to �aaetit If You tail to or revocation. ton, 100aficattan, I h0r6bY-certify that the Mark authorizaA by the above '&erairft wteoapletad in axosdar�ee with .the tower WV ov- � as t h gnature or Permitt" lit • RAILROAD```OR ••� _A0 .00�, kac _-- �— C-REEK Golf�ourse Sw 0 {■ I .. J y y ,i i l��r■ �� ' 30 ���••• C Sewage Sa ;y�� �pO "i ! •..••t� � � ���� • i LArIruQE y7° 28� O�,, r• �� �� M,16 1 SW 10� ST ::LongacreS1' "Il Ir I '� �= I' R PROJEcr 11 ., - >aLOCATION i Track . ■ ,� I i- _ _ ill --- ,------s -� Reservoir ` � W J it � • W _• 4 t • D O •'•.� z D m t � i 2 f I •;� cc 25 30 n SOURCE: USGS, 1973. RENTON, WA QUADRANGE MAP fr atcr IOCA nov 0 1"=2000' 2000 A ( IN FEET ) Nd SCAI.F o 94-4-00274 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP AT: RENTON. KING COUNTY, WA. ADJACENT PROPERTY OWNERS: APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 26 DRAWN BY: SSW/MDD o SCALE: AS NOTED SHEET: I OF 2 a DATE: 4-20-94 2 W C SW GRAD Y WA Y BOX CUL VE-R T(Im S f, .L, 0 14 88) © "0y Lei \ S. /. i i LEGEND: --� �- \ -- — PROPERTY LINES ROAD CENTERLINE OAKESDALE AVE SW RETAIN/NG WALL(/O1SToLLi0 19f1) %%\ \f —_L-1--J-- -t /-405 BOX CULVERT /-405 BRIDGE I !�!UfN4f 1 ,Ba I BRIDGE ABUTMENT S.R. 405 AND SUPPORT P/L/NG /—YOS VAAINAC ------- plrc,H -_ -�_ -- --- -- -- _ OAKESDALE AVE SW �\ RETAINING WALL(if,:*,1�-LE0 APPROX/MA TE TOP APPROX. TOP OF BAN\ , QJ \ \ `\ OF BANK SINGLE FAM/L Y RESIDENCE �� \ APPROX. ORDINARY BR 16TH ST �� �,� BRIDGE HIGH WA TER MARK \ `\ RE OL A C;0 I a 91 1 (APPROX.. AVE 1 ; DEPTH 2-4 FT) SW. 16 N Sr DIREC77ON OF FL OW FOR SPR/NGBROOK RN� 1a 1 RETAINING WALL CREEK I � 94-1-00274 . 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 I-40S CROSSING DATUM: 1929 NGVD SHEET TITLE: EXISTING CONDITIONS PLAN AT: RENTON, KING COUNTY, WA. APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS: — _-____-- o 1. KING COUNTY DRAINAGE GIST. NO. 1 DRAWN BY: MOD 2. PUGET WESTERN, INC. i 3. CITY OF RENTON SHEET: 2- OF 2r 4. GROUP HEALTH COOPERTIVE 0 1"-120' 120 DATE: 4-20-94 5. BOEING COMPANY 2 6. WASHINGTON DEPT. OF TRANSPORTATION 7. MUNICIPALITY OF METROPOLITAN SEATTL ( IN FEET ) Lo 0 Q1 m \ f 1 �Epf ;n p 1"=120' 120 ( IN FEET ) Obt , +. .\ r. . LEGEND: AREA OF HIGH IMPACT WITHIN EXISTING ORD/NARY HIGH WA TER MARK DUE TO CUT/FILL FOR PROPOSED CHANNEL. ',� ' lk ii AREA OF LOW IMPACT WI THIN OROINAR Y HIGH WA TER MARK DUE —.........................._i......... ---..:._._ �. .... .,: _....... TO TEMPORAR Y DEWA TER/NG/ ;. ...... t _ rs INCIDENTAL DISTURBANCE _.........—.... --- 1.......... --- .- - ------ � NECESSARY TO ACCOMPLISH ...... PROPOSED CHANNEL CONSTRUCTLON ••-.__ —- --- - �.: .................. tic) t•-1 ` PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: I-405 BOX CULVERT PROPOSED EXCAVATION AND FILL ti AND STORAGE, REPAIR UNDERCUT STREAM Pi CHANNEL IMPROVEMENT (SPRING— IN: SPRINGBROOK CREEK (RM 0.5 TO y BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: AREAS WITHIN ORDINARY AT: RENTON, KING COUNTY, WA. ADJACENT PROPERTY OWNERS: APPLICATION BY: CITY OF RENTON $ HIGH WATER MARK IM— SEE SHEET 2 OF U PACTED BY CONSTRUCTION. $ SHEET: 3 OF 2(e DRAWN BY: MDD DATE: 4-20-94 SCALE: AS NOTED 0 m 0 m rn 1 a,V 40, WING WALL CHANNEL ° 1 -'I20` 120 IN FEET ) 50'/-405 BOX CUL VERT OUTLET CHANNEL 90' STREAM �'EALXRUA4E tBW FLOW CHANNEL BANK IMPRovEMENT , `.. N£ HIGH fiOW CHANNEL €: ,, , �•S? 20' CONC. WING WALL � ; '•, � ___. .CEN7,BI3L/ 40, CONC. WINGWALL �`. ' `•. — , , a , , , APPROX.. TRAIL — ALIGNMENr ::' 215r',(-40,5 BOX CUL WRT INLET CHANNEL EXIS77NG CHANNEL TO REMAIN LEGEND. \ NEW CUrl-PU SLOPE PEDESTRIAN 7RAIL "\ ' , BO' GABION WALL • WIDENED CHANNEL ABM'PfDE57R/AN/&'CtLYE €e €�iiiiiiiii s �11 � ': '� TRAIL ACLTW CQ04/QQ4 l AUOVAIDVT 7V BE aa ;;,;;;. i .r �'�.......... 7RANSPOR A71CW LYNb7QV I 1 ' l SV ....................................................... ........................................................ I h 1.......:.:::: S/770N=GhANNEL .................. I 94-4-00274'' ' 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL AND AT: PENTON. KING COUNTY. WA. `— ADJACENT PROPERTY OWNERS: PEDESTRIAN TRAIL PLAN APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 7-6 SHEET: y OF Zfo DRAWN BY: MDD DATE: 4-20-94 SCALE: AS NOTED W c z \ - 0 1"=120' 126 IN FEET ) \ \S R 405 - - 1 W le .—.—-—-_.- a - 1 - I 94-4-00274" c PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL CROSS AT: CATION TON BY: CITY OF RENTON KING COUNTY, WA. APPLICA ADJACENT PROPERTY OWNERS: SECTION REFERENCE PLAN SEE SHEET 2 OF %6 $ a DRAWN BY: MDO SHEET: S OFl-'o GATE: 4-20-94 SCALE: AS NOTED W c - r ter'•r �... .'J '.\ ••\�j•. i; ..• .. ,, �, Y.J. r r ` •• a, l ^' r •.� ', ( IN FEET ) IM EGE r 4 \,_i_,•_i....tom—..-, s ...} ® P VC MEMBRANE a ,i♦ it�Y•• ,� 1• \:1 , i a f : 1 1 ......... ...................._... __•....._ _._.... A ............._ _.. _........ h i 94-4-00274 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL e AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: PVC MEMBRANE PLAN AT: RENTON. KING COUNTY, WA. _^ ADJACENT PROPERTY OWNERS: APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF t6 ~°o SHEET: 6 OF 1l1 DRAWN BY: MDD DATE: 4-20-94 SCALE: AS NOTED i W V , ,v t 0 1"=120' 120 ( IN FEET ) \ ....... , LEGEND. O FISH HABITAT COMPONENT BANKERS DWARF WILLOWS ........._. \ , ® WILDLIFE HAB/TA T PLANTING !,� t _................................. NOTE t ~. .I a� r1•u> x.. SEE SHEETS IJ-15 __�......... —........ . ...... FOR HAB/TA T DETAILS ......... . ...... .............-......._ .r; q i 94-4-00274 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING h DATUM: 1929 NGVD SHEET TITLE: FISH AND WILDLIFE HABITAT AT:APPLICAON,TION KING COUNTY,RENT ADJACENT PROPERTY OWNERS: MITIGATION PLAN APPLICATION BY: CITY OF RENTON o SEE SHEET 2 OF 16 i SHEET: 7 OF 26 DRAWN BY: MDD DATE: 4-20-94 SCALE: AS NOTED i W \ L r 0 1"=120' 120 :N. E IN FEET ) l ' , ..... , a, ♦ M ♦, 1 ` ,-N:— .. a ♦ ♦ ' a . a• ` r l LEGEND. AREAS COVERED BY RIP RAP AREAS COVERED BY EXCELS/OR BLANkET N (SEE C116 FOR DETAILS) '• ,� i 1i _raj r ♦ c l —y.........s__...... ......... ... ................................. NOTES: —.............. I t �lv. °?;rf S f. 1. ALL DISTURBED AREAS, EXCEPT THE LOW FLOW q CHANNEL AND WITHIN THE DRIP LINE OF BRIDGES, -._•.._ '� WILL BE COVERED WITH TOPSOIL AND SEEDED ............... -- - ...... .-- — ................ __�......... ... WITH GRASS MIXTURE. 1. 2. SEE SHEETS 4 AND 10-12 FOR CHANNEL ' ! ' ? g SECTION LOCATION AND DETAILS. ( J �.�- i )? 94-4-00274 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® I-405 CROSSING 113 DATUM: 1929 NGVD SHEET TITLE: STABILIZATION PLAN AT: RENTON. KING COUNTY. WA. ADJACENT PROPERTY OWNERS: APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 1.6 SHEET: ,2 OF DRAWN BY: MDD DATE: a-20-9494 � SCALE: AS NOTED G co O OI m Prl A1SIN(• -"05 sar at KFr DnMC 5w OTAOr NAY bur ac KHr TO aT'1E1�'/1E OPd/O St.RYACf /5 /5 P-I OGMfZ 907`7W JO 10 Cow flow a"wia eormw 5 / PK•WWWAAC 5 0 - 0 •:.,•.,,,:,:,•:.,•:.,•.,•.,•:.:,•::::::..:•:::..••........... .............................. -S -5 575*00 676+00 577*00 676+Oo 679+00 PROFILE CHANNEL nnc sr to sr ewacr � n+ czsnnC i-cos ear at Kxr -20 15 __ _________ 15 APPADX [O?CUW S AX-y 10 to APAPUX / 5 Di4AN(Z - 5 (9orTaV-.-.-.- . o , .� ---slw��rncaereczaar�c----------- 0 -5 -5 670+00 671+00 677+00 67J+00 674+00 675+00 575450 PROFILE L CHANNEL LECENO: ® CUr/ZL WITHIN AREA OF OROINARY HIGH WATER MARK of ry O 3 94-4-00274 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM Pi CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL AT: RENTON, KING COUNTY, WA. = ADJACENT PROPERTY OWNERS: PROFILE APPLICATION BY: CITY OF REN70N SEE SHEET 2 OF U DRAWN BY: MOD SCALE: 1"=100' HORIZONTAL SHEET: 9 OF 2(0 1"=25' VERTICAL DATE: 4-20-94 W 2 W G r ._E4757I7 G WNGWAU-1 I IS ,o LYPGINO SURFACE I fir I £X/S7NG RETAN/NG WALL J J ���IVISHVJffGAKwA o I _1 _J _p 210 -! O 7 ro IJ ]O n A Jv p u .Jo J0 io p 70 SECTION m EWSI NG sw iew sr awx N Jo v ro APPROX.. CROUJD SURFACE\ 8CL li 13 7 FINlw GRADE o O _ FS m I I -7 -1 -53 -70 _u _p _,);7 -JO _p _p -!7 -!O -7 O S /0 JJ 20 27 J17 A 40 17 10 R7 p 6.S 7D SECTION EXISDNC REMOVING WALL XIS ANC WNCWALL Jn 2 m APPROX. CiPOUNO SL/RFACf 15 !o ,y \\\ I� 3! .�FOVI- G4ADf 10 S 1 ROCX R/PRAP 0 a f$r�R i -s -7 _y _50 -45 -40 -JCS -JD -7J -J17 -15 -to -J 0 J /0 1J JO 1J JO D .0 t0 IS 1 SECTION LEGEND: ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK a (OHWM). qhg i 94-4-00274 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: I-405 BOX CULVERT PROPOSED EXCAVATION AND FILL � AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING AT: WA DATUM: 1929 .NGVD SHEET TITLE: CHANNEL SECTIONS T KING COUNTY, ADJACENT PROPERTY OWNERS: APPLICATION ON BY: CITY OF RENTON DRAWN BY: MOD SEE SHEET 2 OF 26 SCALE: 1"=20' HORIZONTAL SHEET: 10OF 2-& 1"=20' VERTICAL DATE: 4-20-94 x W C APPROX CROWD SURFACE ,o ELEV so rrP 6i i I I 61177NG RETAWMG WALL J �ROC- OCK J XM-VO4 BLANKET tC A,E'd/BRANE IFx 7�R _J -J -45 -40 -.fs -]o -Is -10 -,J i -10 -J 4 ! 10 ,! >b n .A J5 a 45 Jo u SEC710N 20 rAPPROX OFOUND SURFACE ---- — - ,J to �I I EXCELSIOR BLANKET EX/SnNC RETAINING WALL J DO NOT asIURB J SKI R/PRAI' o fIL IER o PW�AtfYBRA1 _J -J i p -70 _95 _yy _s,7 _J0 -41 -40 -JJ -V -M -20 -rs -t0 i -J r J /0 !J ]0 7J A JJ M 4J s0 w I I SECTION 1 EX?snNG MANHOLE m cAe/ays , W APPROX. GROUNO SURFACE IJ £XCL'Z5/A4 BLANKET EAIS77NG 90"R 14 j0 E�VOR BLANKET EX/SPNC RETAN✓/NC WALL J MEMO WASI£ SEWAGE NE 0 \\ o !- PlC pEIIBRANE m _J -s _gyp -05 _w _ -JO -fJ _40 -is -,y -15 -117 -15 -to -J 4 i7 /o !J v 15 m m 40 45r 50 sJ 1 I SEC77ON r a LEGEND: 4 ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK 8 (OH AV). . 94-4-00274 0 a PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINCBROOK CREEK (Rm 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® I-405 CROSSING AT: RENTON. KING COUNTY, WA. DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS: DRAWN BY: MDD o SEE SHEET 2 OF %6 SCALE: 1"=20' HORIZONTAL SHEET: II OF 2(, 1"=20' VERTICAL DATE: 4-20-94 i W C p ]0 1 15 31 APA40X p4WN0 57/RFACE n �I Io ro NEW RETAINING EX/S77NG RE7A.IV/NC WAIL J `\ WAU t ROCYC 1y1 FYI J RIPRAP 0 fILEXCECS7CW BLANKET 0 FX TR' _J -J -m -6J -60 -m -JO -4f -40 -A -A -Sf -p -IJ -10 -f ¢ Y /O Is p lJ -V Jb 40 4J JO Jf PW MCl.6RANE SEC77ON p p I I ---------- UGH L005£RIPRAP I (v l 15 ��, 3 21 (�APPROX. CROC/ SURFACE 15 O� I 10 MAX EXIS77MG RE7AWING WALL J ROCYC � N+, F7N/SN Q4AAE J RIPRAP 0 57OR BLANKET 0 -J -s -A -6f -60 -JJ -JO -4f -40 -JJ -JO -7J -p -1f -10 -f 1' f JO I p PJ Al is 40 41 M SJ PYC IICMBRANE I SEC770N 20 p I I JJ It ? IJ rJ r APPROX CRCY/NO SURFACf -----------'--- IO U� .............. "'MVG RE7AA4NG WALL /0 �9"r� R MSY/CRAOE J ROCX ' s 0 _-------- EXCELSY04 BLANKET 0 fX 1ER -s -S -7D -6J -i0 off -40 -X -JO -lf -p -1J -IO -S P f JO !J p 23 J17 JS 40 I.S JO .SS PYL MEMBRANE SECTION q LEGEND: ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK (OHWM). 94-4-00274 a h PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM PI CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING ; DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS AT: RENTON, KING COUNTY, WA. APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS: DRAWN BY: MDD o SEE SHEET 2 OF L6 SCALE: 1"=20' HORIZONTAL SHEET: /20F2L 1"=20' VERTICAL DATE: 4-20-94 i W c B ALI �C LOW FLOW 4VANNL7 JO' F7-W RE57AVG BOP/LDERS (see deto#B J 24-S77 pA. f79I / R£S77NC BGY/LMRs 'L�fOj�� �(OG MIIN RCOT WAO /I o 112 GAL V WR£R001C O R7PRAP CONC dk-to 7Y BLOL "r (xe detoA A) O TZO •' PLAN NTS 0j PLAN N.T.S FISH HABITAT COMPONENT FISH HABITAT COMPONENT ,A, .B„ 2 24'DIA. f7SW J TI'pA. F7,9Y R£SANG BIX/LDERS R£S77NG BOULDOU LOW fLOW (sr d�to/Bf LOW fZOW ROCK R/PRAP (YAVCR£7£BLGLA' (ss�deto/ LA AJ X LOG w7N ROOT WAO TAKE_ 12AGK OVT OF 1/2 GAL V M1RC RCP[ SECTION SECTION N.T.S N7S r A m y O U� 3 94-4-00274 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL i-- AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING AT: RENTON. KING COUNTY, WA. DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS: DRAWN BY: MDD o SEE SHEET 2 OF 26 SCALE: AS NOTED SHEET: /3OF2(o DATE. 4-20-94 i W C /S REBAR IMBEDDED 5' INTO CONCRETE I O- 2 J 14"DIA. FISH RES771VC BOULDERS LOW FLOW DETAIL A CHANNEL W 4(R": N.LS.RIPRAP 4"," " A f75H RES77NC BOULDER PLAN TREE 7RUNK ROOT WAD N.T.S /8 REBAR N07E- Fastenrsh resting boulder to tree with /6 rebar inserted FISH HABITAT COMPONENT through the tree and 6"into . 7NG BOULDER rrnrr bouldc. Use on epoxy system C. to anchor the rebor to the PLAN stone. JCIUMFR �— JwAD 24'DIA. F75H RES77NG B 14 VIA. F75H RES77NC BOULDERS LOW FLOW TREE TRUNK ROCK RIPRAPURODIS NEXT r0 CHANNEZ BOTTOM Et E-VA RON SECTION DETAIL B N.rS 94-4-00274 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL r AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING AT: RENTON, KING COUNTY, WA. DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS:SEE SHEET 2 OF DRAWN BY: MOD o L6 SCALE: NOT TO SCALE SHEET: I♦OF�G DATE: 4-20-94 2 W C C o J 0, AV IF r. Ai...n,w.ow..e....w. ®�;� {j' O O 0 0 0—rAU w'rtvv C A-r 0 0 0 O 0 0 0 O O O O—cnruN axwfa y J PMr AwnNq PPR/Y.m tw aaw.+r M JO'c<.RA � O®�®�0 0 0 0—PAC1i7C.49PMISAP/' Pb,M1.hlyy�N O.rw,n nwa JO'r7I } � �ONM1fl♦ArIW J .i 07LDLIFE HABITAT PLANTING DETAIL N cs *A�A�OW—C�V rr oMPME AYAr MOSS AAV YAVW) 0000000000 00000000� 2.cc r A .. PLANTING DETAIL #7LLO)F PLANTING DETAIL Ai s N.rs PLANTING LIST OVAN SpfNWC NAVE CQHNOV NAME 91E -92F AX &4ux C077FA RAMTRS OMA41.GLOM I R. NA9�.CCV—1]NC 2 rl.w 7S A4Q/ACIIFR Rp0V1 PAC19C SENRCi CRRr ClWr R.a n YANOMA AOEAFVL r rA4L CftR WV 75 co^vs SRIO'r-vu Rmo9O7 OO ORL'V CW/ANf1e J R n 73 RPi w(/S NB'ow.wA 0.'"1/SS1 cc—cw arorracwl r p, ti O Z 94-4-00274 0 h PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING h DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS AT: CATION TON KING COUNTY, APPLICA BY: CITY OF RENTNTON � ADJACENT PROPERTY OWNERS: DRAWN BY: MDD o SEE SHEET 2 OF 7-6 SCALE: AS NOTED SHEET: /SOF210 DATE: 4-20-94 2 W C SEE SLOT O/7t /DETaL CHANNE2 e01 2W CROSS SECTION USE"A COMMCW ROW CIS STAbEfS AV A&ON/NC BL Kf1S II �C7/ANNEI 80r7Pw t - - -------------- Ax aaar ; J' e `� srAPEf \; 17 / �>a BUTT BLANKET EDGES 700CMER SECTION A N07E N.r.S. 16 Place blanket on slopes pe/pendi[x//ar to the direction of Aow. Place blanket on channel bottom pa/vlle/to the drection o/flow. PLAN fXCEZ57Q4 BLANKET +r cum .III=1 I I=1 I I=1 I I—_ SECTION A r• A OF off wm SLOT DITCH DETAIL N .r.S 16 EXCELSIOR BLANKET DETAILS C N.r.S 16 . w b O 2 94-4-00274 0 b PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM PI CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS AT: RENTON, KING COUNTY, WA. =' ADJACENT PROPERTY OWNERS: APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 26 DRAWN BY: MOD SCALE: AS NOTED SHEET: Ao OF Z& DATE. 4-20-94 i W C PROJECT NARRATIVE Project name: 1-405 Box Culvert/P-1 Channel Improvement Project (Springbrook Creek RM 0.5-0.7), from SW Grady Way to SW 16th Street. Size and location of the project: The project is linear in shape and is adjacent to, and includes portions of, a reach of Springbrook Creek that flows to the north. The project area is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs east-west through the project area approximately 400 feet north of SW 16th Street. The project area is slightly north and east of the former Longacres racetrack and slightly southeast of the METRO Wastewater Treatment Plant. The entire project is in the SE 1/4 and NE 1/4 of Section 24, Township 23 North, Range 4 East, W.M., in King County, Washington. The project area is approximately 3-1/4 acres. Existing improvements and project description: The proposed project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel made from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). Improvements which have been completed during this period include the Black River pump station forebay, P-1 Channel improvements from the forebay to SW Grady Way, the SW Grady Way and 1-405 box culverts, the P-1 Channel/Oakesdale retaining wall, and the SW 16th Street bridge. The purpose of this proposed project is to complete the construction of P-1 Channel improvements from SW Grady Way (Sta 680+26.37) to SW 16th Street (Sta 670+76). The existing Springbrook Creek stream channel, which conveys drainage from a 22 square mile watershed, directs flows north under the SW 16th Street bridge toward the 1-405 box culvert. However, since the corresponding channel improvements to allow flows into the culvert were not constructed, fill now blocking the 1-405 box culvert forces the flow around the culvert to the west and underneath the 1-405 bridge adjacent to the culvert. Continuing downstream from under the 1-405 bridge, the flow is redirected to the northeast to pass through the SW Grady Way box culvert and on toward the Black River Pump Station forebay. Only three of the five cells of the SW Grady Way culvert are currently open because of the existing narrow inlet channel blocking the outer two cells. The channel reach between 1-405 and SW Grady Way is a source of downstream sedimentation due to erosion along the west bank of the reach. The project area provides minimal habitat for wildlife because the surrounding streets confine Springbrook Creek to a narrow, defined corridor disconnected from other habitat in the area. Shoreline anchoring work by the Department of Transportation under 1-405, significant channel erosion and sedimentation result in low quality fish habitat. The narrow existing channel also affords little in-stream or off- a stream shelter to migrating fish which the proposed project will provide. The lower reach of Springbrook Creek is $ primarily suited for migration and rearing. ` °o 94-4-00274 0 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— IN: SPRINGBROOK CREEK (RM 0.5 TO s BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD AT: RENTON, KING COUNTY, WA. —^ SHEET TITLE: VICINITY MAP APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS: DRAWN BY: SSW/MDD SEE SHEET 2 OF 1(7 g SCALE: AS NOTED SHEET: 11 OF 2l0 DATE: 4-20-94 3 i W The proposed channel construction would begin immediately upstream of the SW 16th Street bridge and extend north along Oakesdale Avenue SW through the 1-405 box culvert to SW Grady Way. Fill blocking the 1-405 box culvert would be removed and Springbrook Creek flows allowed to pass through the 1-405 box culvert. Low flows and most of the high flows would pass through the new channel. A low flow channel to maintain fish passage is included in the design which would connect to one of the five bays of the 1-405 and SW Grady Way box culverts which have a lower bottom elevation than the other bays for fish passage. Fill blocking the SW Grady Way box culvert would also be removed. The existing stream channel adjacent to and under 1-405 would be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. The proposed project would provide many benefits including increased flow conveyance capacity and flood storage as well as alleviation of the existing erosion problem. The project completes the channel improvements for which the existing 1-405 and SW Grady Way box culverts, P-1/Oakesdale retaining wall, and SW 16th Street bridge capital improvements were designed and constructed. The project utilizes land area, which by its location and zoning designation is of no commercial use, but will be enhanced to provide a riparian corridor for fish and wildlife habitat. These improvements would also be beneficial to water quality by reducing channel erosion, maximizing biofiltration, and reducing exposure to solar induced temperature increases through a habitat planting plan to be constructed as part of the project. The project will also provide for a trail link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north and south, which will provide increased recreational opportunities. The trail alignment from the south side of SW Grady Way to about 80 feet north of SW 16th Street follows along the top of the west bank of the existing Springbrook Creek channel. The alignment of the remaining portion of the trail to SW 16th Street and the crossing may occur along one of two route options within a proposed corridor. The corridor extends from the west end of the SW 16th Street bridge to the first new Boeing Customer Service Training Center (CSTC) driveway west of the bridge, and from the terminus of the proposed trail about 80 feet north of SW 16th Street to the southern edge of the SW 16th Street right-of-way. The two options considered in this application are: 1) a crossing opposite the Boeing CSTC shoreline trail; or 2) a crossing at the first Boeing CSTC driveway intersection west of the SW 16th Street bridge. The crossing alternative to be constructed will be selected by the City Transportation Division in a planned study of the crossing alternatives. Acquisition of a permanent easement for the trail link is proposed to secure the necessary rights to allow public use. The easement will primarily follow the existing channel and minimize the area impact on the adjacent properties. Only the 80 foot segment directly north of SW 16th Street may have a greater land area impact if the crossing will be constructed at the Boeing CSTC driveway. This is because of its increased distance from the channel compared to the option of crossing opposite the shoreline trail south of SW 16th Street. Current use of the project site and adjacent properties: The existing Springbrook Creek channel that flows through the project area is best defined as a medium utility use a and with adoption of the Interim Zoning Code has become an existing non-conforming use (Renton, 1993a). This R reach is the only outlet for a 22 square mile tributary drainage area and cannot be abandoned, but will remain in use. The new channel segment to be constructed with the proposed project, which is adjacent to and includes 94-4-00274 0 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL 8 AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO _ BANK, MINIMIZE EROSION POTENTIAL BROOK CREEK) 0.7) 0 1-405 CROSSING h DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP AT: T KING COUNTY, WA. ADJACENT PROPERTY OWNERS: APPLICACATION ON BY: CITY OF RENTON g SEE SHEET 2 OF 2ro DRAWN 8Y: SSW/MDD SCALE: AS NOTED SHEET: )B OF 2(0 DATE: 4-20-94 S 2 V at 4 portions of the existing channel, will create additional medium utility use between the existing channel and the I- 405 Oakesdale Avenue SW underpass. The project area is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs east-west through the project area approximately 400 feet north of SW 16th Street. The project area is slightly north and east of the former Longacres racetrack site now being developed as the Boeing CSTC facilities, and slightly southeast of the METRO Wastewater Treatment Plant. The property in the project area to the north of 1-405 and west of the project channel is vacant land, as is the property south and east of SW 16th Street. A single family dwelling with horse pasture is to the west of the channel, south of 1-405, and north of SW 16th Street. General soil types found on the project site: The USDA SCS Soil Survey (SCS, 1973) for the King County Area, Washington, designates the soil in project area as urban land (Ur). The natural soil layers of Urban land soils are defined as having been disturbed and/or covered with fill material. Several geotechnical studies (CH2M Hill, 1987; GeoEngineers, 1984 and 1988; Hong, 1986) have been performed in the project area for the purpose of determining the construction requirements of the adjacent roadways and their related structures. In these studies, the soil profile was examined using drilled borings and test pits of varying depths (to as much as 80 feet). The findings of the studies were similar and indicative of the area's history as a floodplain for the Green, White, Black, and Cedar Rivers. The soil profile reflected a layering of material likely due to stream bedload, floodplain, and alluvial deposition. Below the surface, several feet of sandy silt and silty sand were encountered in the borings with apparent lenses of clay, gravel, silt, and peat. The soil profile grades downward to more coarse and dense sand with increasing gravel proportions, but also with lenses of finer materials and debris. The City of Renton has mapped the Green River Valley area as a seismic hazard (Renton, 1993b), due to the liquefaction potential of the unconsolidated sands present in the Valley soil profile. Even without the proposed project having been constructed, the adjacent structures are subject to liquefaction induced settlement. However, these structures were designed to accommodate the proposed channel improvement. The construction of the project is therefore not anticipated to impose unanticipated risks to structures in the project area due to seismic ground movement and acceleration. The 1-405 bridges in the vicinity are constructed on piling and other structures are founded on broad footings to reduce the risk of settlement due to liquefaction. A portion of the west bank of the existing channel north of 1-405 has been eroded to a near vertical slope and is therefore unstable. This area will be graded to a more stable 2 horizontal to 1 vertical slope and protected with rip rap and vegetation. q R 0 94-4-00274 a 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5. TO s BANK, MINIMIZE EROSION POTENTIAL. 0.7) ® 1-405 CROSSING c� BROOK CREEK) h DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP AT: T KING COUNTY, ADJACENT PROPERTY OWNERS: APPLICACATION ON BY: CITY OF RENTON SEE SHEET 2 OF 2io DRAWN BY: SSW/MDD SCALE: AS NOTED SHEET: 19 OF26 , DATE: 4-20-94 i r Nature of the existing shoreline: The reach of Springbrook Creek within the project area is an open channel which drains approximately 22 square miles of pervious and impervious land area from Kent, Tukwila, King County, and Renton. Surface water runoff reaches Springbrook Creek from these areas by overland flow or from a system of culvert and open channel point discharges along its length. Springbrook Creek flows north to join the Black River in the Black River Pump Station forebay which is then pumped into the Green River. The Duwamish River, formed by the confluence of the Black and Green Rivers, flows northerly into the Elliott Bay of the Puget Sound. The entire project is within 200 feet of Springbrook Creek. Springbrook Creek, through the project area, is designated a Shoreline of the State by the Department of Ecology (Ecology, 1991), which determined that the mean annual flow of the creek in the area of the project was equal to or greater than 20 cubic feet per second (cfs). The City of Renton shoreline designation of the project reach is urban (Renton, 1990). The entire project area also lies within the 100-year floodway and floodplain according to Federal Emergency Management Agency Flood Insurance Rate Map 530033C0453D (FEMA, 1989a). The FEMA Flood Insurance Study regulatory base flood (100-year) water surface elevation in the reach is 16.4 feet National Geodetic Vertical Datum (NGVD) at SW 16th Street (FEMA, 1989b). More recent preliminary hydrologic (Northwest Hydraulic Consultants, 1991) and hydraulic (R. W. Beck, 1992) modeling analysis indicates that the base flood elevations of Springbrook Creek may be lower than those determined by FEMA. However, these and other analysis (Hammond, Collier, Wade- Livingstone, 1992) also identified existing and potential flooding problem areas upstream of the project reach due to high water levels in Springbrook Creek. The primary purpose of the proposed project is to increase the flood conveyance and storage capacity in the project reach and thereby reduce the level of flooding in existing upstream problem areas. The existing Springbrook Creek channel, including the reach in the project area, has been extensively modified and disturbed by dredging and vegetation management activities performed by adjacent land owners and Drainage District No. 1. In an on-site field inventory (SCS, 1989), the existing channel was noted to have open water approximately 15 to 20 foot wide with 2 to 3 feet of woody and herbaceous vegetation on each side of the channel. The existing channel under 1-405, however, has been severely eroded by flood waters and disturbed by subsequent shoreline anchoring efforts by the Department of Transportation under I-405. The significant channel erosion and sedimentation result in low quality fish habitat. A wetland inventory of the proposed project area was also conducted on March 1, 1993 and the findings summarized (SCS, 1993a, b, c) according to the criteria of the Corps of Engineer's 1987 Wetland Delineation Manual and the 1989 Federal Manual for Identifying and Delineating Jurisdictional Wetlands. Two delineation methods are required because Springbrook Creek through the project area is not only under local jurisdiction, as defined by the 1989 Manual, but is also subject to the jurisdiction of the Federal Clean Water Act, Section 404, administered by the Corps, as defined by 1987 Manual. No regulated wetlands were identified. Q R 0 94-4-00274 a 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL a AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO s BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING N DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP AT: T KING COUNTY, WA. ADJACENT PROPERTY OWNERS: APPLICACATION ON BY: CITY OF RENTON DRAWN BY- SSW/MDD g SEE SHEET 2 OF 2(, 4 SCALE: AS NOTED SHEET: 7 0 OF 16 DATE: 4-20-94 i r Y V Fish have been recorded migrating upstream at the Black River Pump Station (Renton, 1993c). The fish counter at the pump station had recorded the following numbers for several years for the period from September through January. 1983-1984: 155 1986-1987: 82 1989-1990: 77 1984-1985: 119 1987-1988: 166 1990-1991: 69 1985-1986: 47 1988-1989: 95 1991-1992: 107 The suitability of Springbrook Creek for salmonid spawning is poor and the rearing habitat is degraded. Upper tributary streams, such as Garrison Creek, may provide spawning and rearing habitat and Springbrook Creek provides the needed migration route. The Department of Fish and Wildlife has indicated that Springbrook Creek does support runs of coho salmon and other anadromous fish including steelhead, and cutthroat trout (Renton, 1993c). The proposed project will help to enhance the habitat quality of Springbrook Creek within the project reach through a combination of riparian plantings and installation of in-stream rock and woody debris structures. The existing channel will be preserved and provide off-channel flood storage that could be used as a resting area during high flows. Proposed construction dates and phasing: Construction is proposed for the summer of 1994. Any construction within the existing channel will be allowed to occur during the summer months of the Washington State Department of Fish and Wildlife "window" from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Because of uncertainties regarding weather and on-site conditions, extension of the fisheries window up to October 15, 1994 may be necessary to complete construction. Any extension request will be coordinated with the Department of Fish and Wildlife. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. The contractor will prepare a construction mitigation plan, outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Specific work proposed: The City of Renton proposes to perform the following activities: 1. Remove soil blocking the existing box culvert under Interstate 405 (1-405) for the purpose of creating a new inlet and outlet channel for the culvert that will allow flows in Springbrook Creek to pass through. m 2. Widen a portion of the existing Springbrook Creek channel between SW Grady Way to SW 161h Street leading R to and from the 1-405 box culvert. The existing Springbrook Creek channel parallel to the proposed 1-405 inlet 0 0 2 94-4-00274 0 i PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO s BANK, MINIMIZE EROSION POTENTIAL BROOK CREEK) 0.7) ® 1-405 CROSSING AT: RENTON, KING COUNTY, WA. -^ DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP APPLICATION BY: CITY OF RENTON o ADJACENT PROPERTY OWNERS: DRAWN BY: SSW/MDD g SEE SHEET 2 OF 2.(0 SCALE: AS NOTED SHEET: 2-10FZG DATE: 4-20-94 i x and outlet channel will be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. 3. Regrade and stabilize a segment of nearly vertical, eroded stream bank on the west side of the existing channel immediately north of 1-405. 4. Install a new pedestrian trail culvert crossing over the south 1-405 roadside ditch that is located on the west side of the existing Springbrook Creek channel. The pedestrian trail will provide a link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north of SW Grady Way and south of SW 16th Street. The maximum depth of fill needed for the pedestrian trail culvert crossing of the I- 405 south roadside ditch is approximately 10 feet. 5. Install five fish habitat structures within the low flow channel to provide resting areas and increased habitat diversity. Two of the structures will be placed within the existing ordinary high water mark of the Springbrook Creek channel. The proposed structures consist of instream boulder groups as well as tree trunk segments anchored into the stream bank and projected out into the channel. 6. Plant dwarf willows along the edge of the low flow channel to provide shade from solar exposure. The willows also protect against erosive flows while presenting minimal restriction of the channel flood conveyance capacity. 7. Plant shrubs to create two wildlife habitat areas adjacent to the channel. The plantings will increase the quality and diversity of habitat above that currently existing in the channel area. 8. Install stream bypass and dewatering systems to maintain construction areas sufficiently dry to complete the proposed work. The proposed channel construction south of the 1-405 box culvert consists of 215-feet of new channel and 200- feet of widened channel construction. The 215-foot new channel segment extends south from the southern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 200-feet of widened channel consists of a 160-foot, fully widened, segment that extends south from the new channel to the south end of the SW 16th Street bridge, and a 40-foot transition segment to blend the fully widened segment to the existing channel south of SW 16th Street. The proposed channel construction north of the 1-405 box culvert includes 50-feet of new channel, 120-feet of fully widened channel, and 90-feet of stream bank regrading and stabilization. The 50-foot new channel segment extends north from the northern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 120-foot, fully widened, segment of the existing channel extends downstream, north of the new channel, to connect to the southern entrance of the SW Grady Way box culvert. The 90-foot length of stream bank to be stabilized is located on the west side of the existing channel, beginning immediately north of 1-405 and a extending north to blend with the new west bank of the proposed widened channel section. R 0 94-4-00274 a 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: I-405 BOX CULVERT PROPOSED EXCAVATION AND FILL a AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO _ BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP AT: RENTON, KING COUNTY, WA. 2 APPLICATION BY: CITY OF RENTON o ADJACENT PROPERTY OWNERS: DRAWN BY: SSW/MDD g SEE SHEET 2 OF 2(o SCALE: AS NOTED SHEET: 22-OF 2. a DATE: 4-20-94 i e W To maintain fish passage, a low flow channel with 12-foot bottom width and 3 horizontal to 1 vertical side slopes is included in the design of the new and widened channels. The proposed low flow channel connects to one of the five bays of the 1-405 and SW Grady Way box culverts which have a lower bottom elevation than the other bays. The channel design slope is very gradual at 0.02%, and the bottom elevation varies from 0.09-feet at SW Grady Way to 0.24-feet at SW 16th Street. The existing channel bottom elevation varies from 0 to 2 feet from SW Grady Way to SW 16th Street (1929 NGVD, datum). The depth of the low flow channel is 2.5-feet and the overall top width is 27-feet. The maximum depth of excavation from existing to finish grade is approximately 16-feet. The proposed main channel, including the low flow channel, averages 65-feet in width. The design slope of the main channel is very gradual at 0.02%, and the bottom elevation varies from 2.59-feet at SW Grady Way to 2.74- feet at SW 16th Street (1929 NGVD datum). The design channel side slopes vary between 2 or 3 horizontal to 1 vertical. Three concrete wing walls totaling 100-feet in length and one rock-filled gabion wing wall 80-feet in length will be installed at the entrances and exits to the SW 16th Street bridge, 1-405 box culvert, and SW Grady Way box culvert. However, these structures are located out of the existing ordinary high water mark of Springbrook Creek. To construct the proposed channel, the existing material necessary to achieve the proposed channel section subgrade will be removed. The total amount of excavation is estimated to be 15,700 cubic yards (CY), of which an estimated 2,100 CY will be removed from the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. Subgrade is generally 1.5-feet below the proposed finish grade, with a portion of the proposed channel directly adjacent to the Oakesdale Avenue SW underpass and underdrain system over excavated to 5-feet below the proposed finish grade to allow placement of a watertight PVC membrane. The underdrain system, which protects the Oakesdale Avenue SW underpass from groundwater seepage onto the roadway, must be protected from the short-circuiting of water from the proposed channel which will be located directly adjacent to the underdrain system. To prevent this piping of water from the channel through the soil and into the Oakesdale Avenue SW underdrain system, which is lower in elevation than the proposed channel bottom, the membrane will be connected to the Oakesdale Avenue SW P-1 channel retaining wall and extended west across the width of the channel (CH21VI Hill, 1987). This increases the flow path that water from the channel must travel to reach the underdrain system and will effectively reduce the potential for removal of finer particles from supporting soils due to piping and overburdening of the underdrain pump system. The use of sheet piling driven into the channel bottom to lengthen the flow path was also considered, but was not selected because the piling may reach refusal too soon to provide effective protection. The total estimated quantity of fill for the channel work, including filter material and rip rap, is 8100 CY, of which an estimated 1,700 CY will be placed in the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. A total of 3 1/2-feet of fill material will be placed on the PVC membrane to achieve subgrade. To reach finish grade on a portion of the channel, including the low flow channel, a total of 1/2-foot of sandy filter material and 1-foot of clean, loose rip rap will be placed on the subgrade. Other areas of the channel not receiving rip rap that are subject to potential erosive flows will be brought to finish grade with fill material and overlain with an excelsior blanket. This will protect the exposed soil and allow vegetation to become established to further Q protect against erosion. i 0 94-4-00274 a 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. 0.7) ® 1-405 CROSSING BROOK CREEK) H AT: T KING COUNTY, WA. DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP 2 ADJACENT PROPERTY OWNERS: APPLICATION ON BY: CITY OF RENTON DRAWN BY: SSW/MDD g SEE SHEET 2 OF 1l0 SCALE: AS NOTED SHEET: 23OF26 DATE: 4-20-94 s x Fill material will be well graded sand to silty sand. The material will be from an approved gravel mining site and will arrive to the site via 1-405, SW Grady Way, Oakesdale Avenue SW, and SW 16th Street. The specific source of the fill material and haul route is unknown at this time, but will be provided as a part of the final construction management plan, and will be submitted for approval to the City Development Services Division. Mitigation: The proposal includes fish habitat components developed in consultation with the Washington Department of Fish and Wildlife. Bankers dwarf willow cuttings (salix cotteti) will be planted on 2-foot centers along both banks of the low flow channel to provide shading and visual screening for migrating fish. The dwarf willow does not develop into a large tree that would present an obstruction to the flood conveyance capacity of the channel, but will temporarily lay over during times of high flow. Five in-stream structures of three different types are also included in the project design to create resting and hiding areas for migrating fish. These structures include the following: A. Placing groups of three 24-inch diameter boulders in the low flow channel. B. Placing large diameter boulders in the low flow channel with rock rip rap around the boulders and up one of the side slopes of the channel. C. Anchoring a section of tree trunk with the root wad exposed in the channel bottom at a 30-degree angle to the cross section of the channel. Two wildlife areas are also to be established with the planting of approximated 300 shrubs at 3-foot centers. The shrub type will be Pacific Serviceberry, Tall Oregon Grape, Redosier Dogwood, and Common Chokecherry. These two areas will have four rows parallel to the channel with groups of 3 to 5 plants of the same species staggered between the rows. The following special plans and reports will be prepared to ensure that potential impacts are avoided if possible. Where impacts cannot be avoided, the plans and reports will identify methods to minimize anticipated impacts and to ensure that these impacts will be mitigated. Erosion control plan. Before any construction activity occurs, a pre-construction meeting with the contractor will be held with the project engineer and the City. Prior to the meeting, the contractor shall provide to the City and Engineer an erosion control plan for review and approval: The plan shall be based on the King County Surface Water Design Manual, as adopted by the City of Renton, proper construction practices, and any measures detailed in the contract plans and specifications. The contractor will also be responsible for addressing any state and federal permit conditions required for the project. q Erosion and sedimentation controls, such as straw bale barriers, silt fences, and straw mulch for temporary R protection of exposed soils should be applied during construction. Stabilized construction entrances and washpads should be installed at the beginning of construction and maintained for the duration of the project. 94-4-00274 a 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL BROOK CREEK) 0.7) ® 1-405 CROSSING c" DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP AT: T KING COUNTY, ADJACENT PROPERTY OWNERS: APPLICACATION ON BY: CITY OF RENTON SEE SHEET 2 OFZ-t, DRAWN BY: SSW/MDD g SCALE: AS NOTED SHEET: 2HOF24 DATE: 4-20-94 s x As construction progresses and unexpected or seasonal conditions dictate, the contractor shall anticipate that more erosion and sedimentation control facilities will be necessary to insure complete siltation control on the project site. It shall be the obligation and responsibility of the contractor to revise or modify the erosion control facilities to meet any new conditions that may be created by construction activities and to provide additional facilities, over and above minimum requirements, as may be needed to protect adjacent properties and water quality of the receiving drainage system. Any construction within the existing channel will be restricted to during the summer months of the fisheries window from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. As noted below the contractor will prepare a construction mitigation plan outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Project design final stabilization measures include a 1 to 2-foot deep rock rip rap protective layer placed over disturbed areas under and adjacent to the SW 16th street bridge, the low flow channel area, and a portion of the west bank of the channel between 1-405 and SW Grady Way. A 0.5-foot deep layer of filter material will be placed under the rip rap to prevent washing of any finer material from the underlying soil. Wire mesh gabions will be placed along a portion of the west bank just north of the SW 16th Street bridge to protect against erosive flows. A layer of filter material will be placed behind the gabions to prevent washing of finer material from the protected bank. All disturbed areas will be seeded with a grass mixture immediately following construction, except the low flow channel and within the drip line of bridges. Seeding shall be started as soon as definable segments of the excavated channel are completed as determined by the Engineer. Permanent seed mixtures shall be applied between April 1 to October 15. Winter seeding shall be applied outside the permanent seeding dates as needed, and followed with permanent seeding the next spring as approved by the Engineer. Following permanent seeding, a portion of the area outside the low flow channel that was disturbed during construction will be covered by an excelsior blanket for erosion control and to aid vegetative establishment. Construction mitigation plan. Prior to the preconstruction meeting the contractor shall also provide to the City and Engineer a construction mitigation plan outlining the construction schedule and phasing, the hours of operation, the proposed earthwork material source/disposal site and haul route, and any measures to be implemented to minimize the impact of construction to surrounding property owners and public streets. To minimize potential impact to cultural resources that may be present in the project area, the individuals involved with construction will be required to watch closely for buried artifacts and remains, and if found, cease work and provide notification to SCS, the City, and the Washington State Historic Preservation Officer to determine the course of action. Dewatering plan. Ground water withdrawal for temporary dewatering purposes is anticipated to be necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for a the proposed channel. Geotechnical reports for other projects in the project area describe ground water levels at R relatively shallow depths (CH2M Hill, 1987; GeoEngineers, 1984 and 1988; Hong, 1986). Because of potentially high ground water conditions the contractor for the proposed project will be required to determine if conditions at o 94-4-00274 2 PURPOSE: INCREASE FL00D CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL 8 AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO s BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING AT: RENTON, KING COUNTY, WA. DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP APPLICATION BY: CITY OF RENTON o ADJACENT PROPERTY OWNERS: DRAWN BY: SSW/MDD g SEE SHEET 2 OF 1ta SCALE; AS NOTED SHEET:2S0F2/e DATE. 4-20-94 3 4 the time of construction are low enough to allow construction. If not, the contractor will be required to construct well points at strategic locations in the project area to draw down the water table sufficiently. Before any dewatering the contractor will be required to submit a dewatering plan for City and SCS review. The amount of ground water to be withdrawn is a function of the soil conditions, water table elevation, required drawdown, and wellpoint location and depth. Therefore, the number of wellpoints and the amount of groundwater that will be withdrawn cannot be estimated at this time. All ground water withdrawals are to be directed, if conditions permit, into the METRO sanitary sewer, temporary settling pond, or other device to minimize the discharge of iron rich water into Springbrook Creek. Springbrook Creek bypass plan. Springbrook Creek will be routed to bypass the work area while construction is in progress within the existing stream channel. The bypass is anticipated to be accomplished by pumping or gravity flow through a piped conveyance or open channel, or some combination of these methods. This is necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for the proposed channel. Bypassing the surface water flow around disturbed areas will also minimize the erosion potential of the exposed soils and protect the water quality of Springbrook Creek. The sequence and timing of the any bypass is to be contractor determined, subject to the review of the City and SCS. Any proposed surface water bypass will also be reviewed by the Washington Department of Fish and Wildlife and coordinated with adjacent property owners. It is anticipated that construction of the channel north and south of 1-405 will occur in two separate phases so that the bypass distance will be reduced from that required to bypass the entire reach. The actual quantity of water to be bypassed depends upon the weather conditions at the time of construction. By working in the summer months the amount of flow to be bypassed will be minimized. Sediment quality report. Because the reach of Springbrook Creek within the project area is downstream of potential point and non-point pollution sources, the sediments in the stream bed will be analyzed to determine if contaminants exist. Contaminants are known to be present in the Springbrook Creek system and have been monitored at several locations (Renton, 1993c)• One of the monitoring stations was at SW 16th Street bridge. Contaminant levels in sediments sampled at this station in 1992 were determined to be below Model Toxics Control Act Cleanup Regulation (WAC-173-340) cleanup levels. These levels apply to sediments disposed of on land other than in a permitted landfill. Dredging or other construction disturbance as part of this project could cause contaminated sediments that may be in the project reach to be suspended and carried downstream. Contaminants that may be in the dredge spoils could also be a potential health risk if not disposed of properly. Although sampling at SW 16th Street indicated that special disposal of the sediments would not be required, SCS has contracted with Herrera Consultants to test a surface sample and a sample at one foot depth at a total of four locations within the project area. The field work was complete at the end of September and a final report of the results is expected in April 1994. H:DOCS:94.403:SSW a i 0 94-4-00274 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL B AT: ROOK CREEK) I CROSSING AT: RENT ON, KING COUNTY, WA. 2 DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS: DRAWN BY: SSW/MDD $ SEE SHEET 2 OF 2(o ? SCALE: AS NOTED SHEET: z4oF2(o j DATE: 4-20-94 s i 4 e � .:i STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. BOX 47600 • Olvmpia, Washington 98504-7600 • (206)459-6000 June 22, 1994 City of Renton Surface Water Utility 200 Mill Avenue South, Fourth Floor Renton, WA 98055 ATTN: Mr. Scott Woodbury RE: Water Quality Certification Public Notice No. 94-4-00274 Excavate and place material in Springbrook Creek, Renton, King County, Washington. Dear Mr. Woodbury: The public notice for this proposed Corps of Engineers Section 10 and Section 404 permit has been reviewed in accordance with all pertinent rules and regulations. The proposed project entails excavating 2,100 cubic yards of material and placing 1,700 cubic yards of material to increase flood conveyance and storage, repair an undercut streambank, minimize erosion, and provide fish habitat, in Springbrook Creek, Renton, King County, Washington. The state of Washington certifies that these activities comply with applicable provisions of sections 301, 302, 303, 306, and 307 of the Federal Clean Water Act as amended, and other appropriate requirements of State law. This certification is subject to compliance with the applicable provisions of the enclosed Hydraulic Project Approval (HPA) from the Washington Department of Fish and Wildlife, the water quality modification from the Department of Ecology (Ecology), and the following: General: 1) Work in or near the waterway shall be done so as to minimize turbidity, erosion, and other water quality impacts. 2) Water quality standards pertaining to Springbrook Creek (Class A) shall apply to this project except as otherwise specifically authorized by this certification and by water quality modification #DE 94WQ-N251. 3) Care shall be taken to prevent any petroleum products, chemicals, or other toxic or deleterious materials from entering the water. -If an oil sheen or distressed or dying fish are observed in the project vicinity, the operator shall cease immediately and notify Ecology of such conditions. Contact Ecology's Northwest Regional Spill Response Office at (206) 649-7000. Water Quality Certification #94-400274 June 22, 1994 Page 2 4) This certification is valid for through September 15, 1994 (per HPA). Work to be done after that date will require an extension or re-certification of this project. Additional conditions may be added to this certification at any time, or certification may be withdrawn, if project construction or operation results in detrimental effects to the waters of the state or if designated uses of the waterbody are adversely impacted. This project may also require further review and approval by Ecology if construction is slated to occur beyond the time limits of the water quality modification. Construction: 5) Project construction, operations, and ongoing maintenance shall be consistent with the technical guidelines contained in the latest version of Ecology's Stormwater Management Manual. 6) All construction debris shall be properly disposed of on land so that it cannot enter the waterway or cause water quality degradation to state waters. Mitigation: 7) Project mitigation as described in the Corps' Public Notice is meant to provide additional fish habitat and to enhance existing habitat. The project shall include mitigation as described in the Public Notice, with the following changes: * to provide better fish resting areas within the channel, two of the three boulder/rock habitat structures will be replaced with woody debris habitat structures. The replacement structures shall match the detail drawings in the Public Notice (page 14). * all planted vegetation, physical structures and other habitat enhancements shall be protected and maintained. This maintenance shall include the replanting of vegetation in areas where plantings have failed to survive. All revegetation areas shall be surveyed after one year to determine the success of the plantings. A 75% survival rate shall be considered sufficient to meet the success criteria for this planting. All dead or dying plants shall be replaced as needed. Water Quality Certification #94-4-00274 June 22, 1994 Page 3 Please note this certification does not exempt, and is provisional upon compliance with, other statutes and codes administered by federal, state and local agencies. Please contact Tom Luster of my staff at (206) 407-6918 if you have any questions regarding this certification. Sincerely, ,lp y Keith E. Phillips, Supervisor Environmental Review and Sediment Management Section KEP:tI Enclosures: HPA #01-95498-01 Water Quality Modification #DE 94WQ-N251 cc: Corps of Engineers -- Jim Green U.S. EPA, Seattle -- Justine Barton U.S. Fish & Wildlife Service -- Dennis Carlson National Marine Fisheries Service -- Ben Meyer Muckleshoot Tribe -- Rod Malcolm WA Dept. of Ecology, Shorelands Program -- Linda Rankin WA Dept. of Ecology, Northwest Regional Office -- Mary Kautz WA Dept. of Fish and Wildlife -- Phil Schneider HYDRAULIC PROJECT DEPARTMENT OF WILDLIFE APPROVAL 600 CAPITOL WAY N. OLYMPIA WASHINGTON 98501-1091 (R.C.W. 7 5 . 2 0 . 10 0) (206) 753-5897 (R.C.W. 7 5. 2 0. 10 3 ) April 29, 1994 _ (applicant should refer to this date in atl correspondence) PAGE 1 OF 2 PAGES �0 APPLICANT NAME 18 CONTACT PHONE(S) 1❑CONTROL NUMBER Renton, City of (206) 277-5547 01-95498-01 19 STREET OR RURAL ROUTE 9❑ WRIA 200 Mill Ave. S . , 4th Floor, Attn: Scott Woodbur 09 CITY STATE ZIP Renton WA 98055 14 76 15 06 "WATER. TRIBUTARY TO 11 TYPE OF PROJECT r1nqbrQQk Creek CIrpPn River Channel Change _— 13 QUARTER SECTION TOWNSHIP RANGE(E-W) COUNTY SECT ION NE 24 23N 04E King Bank Protection Outfall TIME LIMITATIONS• 5❑THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY June 15, 1994 I September 15, 1994 THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. SEE IMPORTANT GENERAL PROVISIONS ON REVERSE SIDE THAT ARE ALSO PART OF THIS APPROVAL. Project Description: Reconstruct and divert 215 feet of new channel to existing I-405 culvert; also includes 50-feet of new channel north of I-405, box culverts channel widening, bank protection, habitat structures, and revege�ation. 1. A temporary bypass or flume shall be in place prior to commence- ment of work. 2 . A sandbag revetment or similar device shall be installed at the inlet to divert the entire flow through the culvert or flume. 3 . A sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area. 4 . Culvert or flume shall be of sufficient size to pass flows and debris occurring during the project. 5 . Prior to releasing the water flow to the project area, all work within the new channel shall be completed. 6 . Water that has seeped into the work site shall be pumped to an area to allow settling of fines before entering the stream, or otherwise contained so as to prevent any siltation from entering the stream. SEPA: MDNS, City of Renton, March 1994 HABITAT BIOLOGIST: Phil Schneider (206) 775-1311, ext. 107 AGENT:JiM Suda P2 MAY 5 1994 APPLICANT - FISHERIES - AGENT - INVESTIGATOR - REGION - OLYMPIA: IT 1- krvrQN ' ;DEPARTMENT OF WILDLIFE r l D TOR HYDRAULIC PROJECT APPROVAL 41 April 29 , 1994 (applicant should refer to this date in all correspondence) PAGE 2 OF 2 PAGES 10 APPLICANT NAME CONTROL NUMBER Renton, City of 01-95498-01 7 . If pumps are used to bypass the stream around the work area, the inlet hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. 8 . Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Bank protection material shall be angular rock or other material of a sufficient size to prevent its being washed away by water action. 10. Overburden material resultin from this project shall be deposited so as not to re-enter the wa er. 11. Work shall stop if distressed or dead fish are observed in the bypass reach. The Department shall be notified immediately. 12 . Prior to starting work, the contractor shall submit to the Department of Fish and Wildlife the erosion control plan that includes the plan to bypass the work area during all phases of the project. 13 . At least one week rior to starting this project, contact Philip Schneider a (206) 775-1311, extension 107 . 14 . Work shall conform to plans and specifications submitted with the hydraulic project application including the revised planting plan that replaces sheet 7 of 16 of the original plans. 15. At no time shall there be a complete blockage of flow, and the new channel shall be filled in a manner thag will minimize the flow impacts downstream. LOCATION: I-405 and Oaksdale Avenue S.W. in Renton cc: Millard Deusen THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK THE PERSON(S) TO WHOM THIS APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS, OR REVOCATION IF THE DEPARTMENT OF FISH AND WILDLIFE DETERMINES THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34.04 RCW TO APPEAL SUCH DECISIONS. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.103 MAY BE MODIFIED BY THE DEPARTMENT OF FISH AND WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE: PROVIDED, HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75.20.130. THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES AND WILDLIFE CODES. ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. ---------------------------------------------------- APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-110-340) CONSISTS OF CONTACTING THE AREA HABITAT BIOLOGIST AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL; BUT, IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE ASSISTANT DIRECTOR OF THE HABITAT DIVISION IN OLYMPIA. THE HABITAT DIVISION ASSISTANT DIRECTOR'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOU ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAL APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER HPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSIONS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPRO- VAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350) . 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN HPA ASSOCIATED WITH IRRI- GATION OR STOCK-WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS BOARD PER WAC 259-04. THE MAILING ADDRESS OF THE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO, ROWE SIX, LACEY, WASHINGTON, 98504; TELEPHONE (206) 459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEAL- ING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. IIFAX T VAO 0 d Pam TO S sTAT o� o COMPANY s PHORE 1 O �y� IA09 FAX 8 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office, 3190- 160th Ave. S.E. • Bellevue, Washington 98008-5452 • (206)649-7000 MAY 2 4 M4 CERTIFIED MAIL D �� P 311 404 088 City of Renton MAY 2 51994 Surface Water Utility Planning/Building/Public Works Department CITY OF RENTON 200 Mill Avenue South Engineering Dept. Renton, WA 98055 Gentlemen: Enclosed is Order No. DE 94WQ-N251. All correspondence relating to this document should be directed to the Enforcement Coordinator, Department of Ecology, Northwest Regional Office, 3190 - 160th Avenue, Bellevue, WA 98008-5452. If you have any questions concerning the content of the document, please call Mary Kautz, telephone 649- 7036. The enclosed Order may be appealed. The appeal procedures are described in the Order. Sincerely, Carla J. Skog Enforcement Coordinator Water Quality Section CJS:jo Enclosure cc: Central Programs Enforcement Unit Public Information Office @'4w DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton ) ORDER for Temporary Modification of ) No. DE 94WQ-N251 Water Quality Standards ) (Springbrook Creek) ) To: City of Renton Surface Water Utility Planning/Building/Public Works Department 200 Mill Avenue South Renton, WA 98055 The City of Renton Surface Water Utility submitted an application for a Short-Term Modification of the Water Quality Standards for the waters of Springbrook Creek, King County. The purpose of the project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel constructed north of SW 16th Street which began in 1984 with the assistance of the U.S. Department Agriculture Soil Conservation Service. The channel improvements will include removal of fill that is blocking the I-405 box culvert, stabilization of the streambank to control erosion and sedimentation, rip rap, construction of a pedestrian trail and riparian plantings and placement of in-stream rock and root wads for fish habitat enhancement. In view of the foregoing and in accordance with RCW 90.48.120(2): IT IS ORDERED that the water quality criteria specified in WAC 173-201A-030(2)(c)(vi) shall be modified between June 15, 1994 and September 15, 1994. This water duality modification is subject to the attached conditions. The department retains continuing jurisdiction to make modifications hereto through supplemental order, if it appears necessary to further protect the public interest during the modification period. Failure to comply with this Order may result in the issuance of civil penalties or other actions, whether administrative or judicial, to enforce the terms of this Order. This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board, P.O. Box 40903, Olympia, WA 98504-40903 within thirty (30) days of your receipt of this Order. At the same time, your appeal must also be sent to the Department of Ecology, c/o Enforcement Officer, P.O. Box 47600, Olympia, WA 98504-7600 and the Northwest Regional Office, 3190 160th Avenue SE, Bellevue, WA 985452. Stay requests must be submitted in accordance with RCW 43.21B.320. These procedures are consistent with Chapter 43.21B RCW. MAY 2 4 W4 DATED at Bellevue, Washington -,I#—�Z hn H. Glyn Water Quality Supervisor Northwest Regional Office Order No. DE 94WQ-N251 Temporary Water Quality Modification City of Renton Surface Water Utility I-405 Box Culvert/P-1 Channel Improvement Project Springbrook Creek (Rivermile 0.5 - 0.7) Location: SW 16 Street on the south, SW Grady Way on the north and the I-405 Oakesdale Avenue SW underpass on the east, SE /14 and NE 1/4 of Section 24, Township 23 North, Range 4 East, W.M., in King County, Washington. CONDITIONS GENERAL 1. The water quality standards affecting Springbrook Creek, (Class A) shall apply except where modified for turbidity, from River Mile 0.5 downstream a distance of 200 feet. 2. The Water Quality Standards for turbidity are modified for the period between June 15, 1994 and September 15, 1994. Any work taking place outside of the time period will require an Order amendment from Ecology after obtaining an extension from the Department of Fish and Wildlife. 3. The project activities must comply with all conditions contained in the Washington State Department of Fish and Wildlife Hydraulic Project Approval, Control No. 01- 95498-01. 4. This approval does not relieve the applicant from the responsibility of meeting applicable regulations of other agencies. 5. Ecology retains continuing jurisdiction to make modification(s) through supplemental Order, if it appears necessary to protect the public interest during the modification period. 6. Copies of this Order shall be kept on the job site and readily available for reference by the City of Renton personnel, the construction superintendent, construction managers and foremen, and state and local government inspectors. CONSTRUCTION ACTIVITIES The construction contractor shall use all reasonable measures to minimize the impacts of construction activity on waters of the state. Water quality constituents of particular concern are turbidity, suspended sediment, settleable solids, pH and oil and grease. Required mitigation measures include, but are not limited to, the following: 1 Conditions - Order No. DE 94WQ-N251 1. The contractor shall follow and implement all specifications for erosion and sediment control specified in the contract documents. Adjustments to planned erosion and sediment control may be necessary to successfully control off site movement of material not covered under this modification. 2. All construction debris shall be properly disposed of on land in such a manner that it cannot enter into the waterway or cause water quality degradation to state waters. 3. Dewatering water that is not turbid may be discharged directly to the stream channel. The discharge outfall shall be designed and operated so as to not cause erosion or scour in the stream channel. 4. Turbid water generated from construction activities, including turbid dewatering water, shall not be discharged directly into Springbrook Creek and its tributaries. Temporary sediment traps (or biofiltration swales) shall be used to allow the turbid water to settle for a minimum of two hours before discharge. 5. Proper erosion and sediment control practices shall be used on the construction right- of-way and adjacent areas to prevent upland sediments from entering the stream channel. 6. All areas disturbed or newly created by the project construction will be seeded, riprapped with clean, durable riprap, or given some other equivalent type of protection against erosion. 7. Approach material shall be of clean composition and placed in a manner to prevent erosion, and siltation that might result from high water and/or heavy rains. 8. All planned sediment and erosion control measures shall be adjusted to meet field conditions at the time of construction. Periodic inspection and maintenance shall be conducted at the end of each working day and after any significant rainfall to insure sediment control measures are in working condition. Any damaged devices shall be repaired immediately. 9. Riprap shall be clean and durable, free from dirt, sand, clay, and rock fines. 10. Work in or near the waterway shall be done so as to minimize turbidity, erosion, other water quality impacts and stream bed deformation. 11. Properly dispose of all construction debris on land in such a manner that it cannot enter into the waterway or cause water quality degradation to state waters. 2 Conditions - Order No. DE 94WQ-N251 12. Excess excavated material shall be transported and disposed of in a manner that prevents the spoils from entering state waters and prevents leachates or drainage from the spoils from degrading water quality. Excavated material shall not be stockpiled on a temporary or permanent basis below the high water line. 13. When working in water, all digging passes shall be completed without any material, once in the bucket, being returned to the waterway. 14. Extreme care shall be taken to prevent any petroleum products fresh cement, lime, or concrete, chemicals, or other toxic or deleterious materials from entering the water in any manner. WATER QUALITY 1. Turbidity levels in the receiving stream at all points outside the specified area shall comply with WAC 173-201A, Water Quality Standards. 2. There shall be no visible sheen from petroleum products in the water at any time during the project. MONITORING 1. Ecology may require sampling and analysis at any time for other constituents during the project. POLLUTION CONTROL INSPECTIONS 1. A Pollution Control Inspector shall be made available to supervise implementation of the Erosion and Sediment Control Plan. 2. The Pollution Control Inspector shall be on site or on call, and be readily accessible to the site at all times while construction activities are occurring that may affect the quality of ground and surface waters of the state, including all periods of construction activities. 3. The Pollution Control Inspector shall have adequate authority to ensure proper implementation of the Erosion and Sediment Control Plan, as well as immediate corrective actions necessary because of changing field conditions. SPILLS 1. RCW 90.56 prohibits any discharge of oil, fuel or chemicals into state waters, or onto land with a potential for entry into state waters. 3 Conditions - Order No. DE 94WQ-N251 2. All oil, fuel or chemical storage tanks shall be diked and located on impervious surfaces so as to prevent spills from escaping to surface waters or ground waters of the state. 3. Fuel hoses, oil drums, oil or fuel transfer valves and fittings, etc., shall be checked regularly for drips or leaks, and shall be maintained and stored properly to prevent spills into state waters. Proper security shall be maintained to prevent vandalism. 4. In the event of a discharge of oil, fuel or chemicals into state waters, or onto land with a potential for entry into state waters, containment and clean-up efforts shall begin immediately and be completed as soon as possible, taking precedence over normal work. Clean-up shall include proper disposal of any spilled material and used clean-up materials. 5. Spills into state waters, spills onto land with a potential or entry into state waters, or other significant water quality impacts, shall be reported immediately to the Department of Ecology Northwest Regional Office at (206) 649-7000 (24-hour telephone number). 6. No emulsifiers or dispersants are to be used in waters of the state without approval from the Department of Ecology Northwest Regional Office. NOTIFICATION 1. Water Quality Inspector for Ecology (Mary Kautz), must be notified at (206) 649- 7036, at least 24 hours prior to commencement of this work and at completion of the project. 2. If distressed or dead fish are noticed in the vicinity , the proponent shall immediately notify the Department of Ecology, Northwest Regional Office at (206) 649-7000, and take immediate action to identify and eliminate toxic sources causing the problem. 4 DEPARTMENT OF THE ARMY SEATTLE DISTRICT, .CORPS OF ENGINEERS P.O. BOX 3755 SEATTLE, WASHINGTON 98 1 24-22 5 5 \\ REPLY TO ATTENTION OF Regulatory Branch JUN 2 9 1994 Mr. Scott Woodbury City of Renton Surface Water Utility 200 Mill Avenue South, Fourth Floor Renton, Washington Reference: Renton, City of 94-4-00274 Dear Mr. Woodbury: Enclosed for your signature are Department of the Army permit forms for work described in the referenced public notice. Please sign and date both forms and return them to US with your check in the-amount indicated below. The check should be made payable to the FAO, USAED, Portland (Seattle) . Your copy of the fully executed permit will then be returned to you. The signed permit forms must be returned to us within 90 days of this letter or your application will be cancelled. You cannot modify these permit forms or their accompanying drawings. By signing the forms you will be indicating your acceptance of all the permit's general and special conditions. Please read them carefully. You can begin the work authorized by this permit only after you have received your copy of the fully executed permit form. Sincerely, I Thomas F. Mueller Chief, Regulatory Branch I Enclosures 1. Permit (dupe) 1 2. Envelope 3. Agency Letter(s) / / Conditional Informational k /xx/ None I S Fee /xx/ None 10 $ E $100 NPS FL 1145-2 (Replaces NPS FL 109) Apr 91 (Rev) DEPARTMENT OF THE ARMY SEATTLE DISTRICT. CORPS OF ENGINEERS " P.O. BOX 3755 • SEATTLE, WASHINGTON 98124-2255 REPLY TO ATTENTION OF Regulatory Branch JUN ) 9 1994 Mr. Scott Woodbury City of Renton Surface Water Utility 200 Mill Avenue South, Fourth Floor Renton, Washington Reference: Renton, City of 94-4-00274 Dear Mr. Woodbury: Enclosed is a Department of the Army permit which authorizes performance of the work described in your referenced application. You are cautioned that any change in the location or plans of the work will require submittal of a revised plan to this office for approval prior to accomplishment. Deviation from approved plans may result in imposition of criminal or civil penalties. Your attention is drawn to General Condition 1 of the permit which specifies the expiration date for completion of the work. You are requested to notify this office of the date the work is completed. Sincerely, . Thomas F. Mueller Chief, Regulatory Branch Enclosure NPS FL 1145-7 APR 91 (Rev) �= CITY OF RENTON Planning/Building/Public Works Department Earl Clymer, Mayor Gregg Zimmerman P.E., Administrator June 15, 1994 Certified Mail P-690-875-568 Jim Green, Project Manager Seattle District, U.S. Army Corps of Engineers Regulatory Branch P.O. Box C-3755 Seattle, WA 98124-2255 SUBJECT: CITY OF RENTON CORPS APPLICATION NO. 94-4-00274 RESPONSE TO COMMENTS Dear Mr. Green: This letter is provided to respond to comments submitted to the Corps concerning the above-referenced project application. Each letter of comment received during the comment period from May 6, 1994 to June 6, 1994 and shortly thereafter is attached in its entirety followed by its set of responses. Individual comments within each letter of comment are grouped consecutively with a letter-number designation noted in the margin. The order of the responses to each letter follows the order of comments. Commentors on the application included: INDIAN TRIBES Muckleshoot Indian Tribe (Letter A) FEDERAL AGENCIES U.S. Fish and Wildlife Service (Letter B) National Marine Fisheries Service (Letter C) REGIONAL AGENCIES Municipality of Metropolitan Seattle (Letter D) These responses are provided to identify how the 1-405 Box Culvert/P-1 Channel (Springbrook Creek) Improvement Project was designed to address the issues raised in the comment letters. Throughout the planning, design, and permitting of the project, the City of Renton has worked with the Soil Conservation Service engineers and biologists and other agencies representatives to develop an environmentally sound project in compliance with local, State, County, and Federal requirements. Permits issued to date for the project included: 1) all local permits; 2) Washington State Department of Fish and Wildlife's Hydraulic Project Approval; 3) Washington State Department of Ecology's Shoreline Substantial Development and Short Term Water Quality Modification Permit. 200 Mill Avenue South - Renton, Washington 98055 Jim Green, Seattle District U.S. Army Corps of Engineers Page 2 As we have discussed previously, nearly $0.4 million in grant funding assistance from the Soil Conservation Service may no longer be available for the project after the end of this month if we have not secured all the required permits. Therefore your assistance in issuing the Corps of Engineers permit for the project by June 28, 1994 is very important and very much appreciated. Sincerely, Scott Woodbury, Projel t Manager Surface Water Utility H:DOCS:94-600:SSW:ps Enclosure JUN-00-1994 00: 11 FROM US COE-REGULATORY BRANCH TO P.02 MUCKLESHOOT EMMS TRIBE Figm$T gs DFP&RTM= _ Post4t'brand fax transmittal memo 7671 [--of POW► 3 1b1WMQ�'O �p Ox FWf _ 6 June 1994 Mr. Jim Crreeu, rrol ect manager US Army Carps of EngLuxxs Regulatory Branch Post Office Box 3755 Seattle, Washington 98124.3495 RE: RFe!��MN, QTYY F 94-4:=74 CREFIO Dear Mr. Green: The Environraeatal Division of the Muckleshoot Indian Tube has reviewed the Public Notice of Application for a Corps Feraiit for the Springbrook Creek flood conveyance and fish habitat proposal. Though the project will improve fish habitat in a section of Springbrook Creek, more work could be done to improve the salmonid value of the proposed habitat enhancements. The additional habitat enhancements could be in the form of an incensed amount of large woody debris, or a salmonid overwintering pond_ Tribal surveys of the Mill Creek located in Auburn confirm previous studies that large numbers of juvenile salmonids overwinter in sections of stream having poor water quality in the sumrr= and lacking much of the structural complexity found in streams usually associated with salmonids. Portions of Spzingbrook Creek in the proposal area are similar to Auburn's Mill Creek. Thus during the winter and early spring months this sccticm of Springbrook Creek has the potential to support large numbers of overwintering salmonids- To the best of our knowledge, no winter or early spring surveys for salmortids have been recently conducted in the lower reaches of Springbrook Creek. Based upon information callectcd by the City of Kent, the Black River Pump Station may be an impediment to upstream juvenile migration. Thus, while the water quality of the lower reaches of Springbrook Creek may support overwintering salmonids, the ability of juvenile salmonids to migrate from the Green River into Springbrook Creek is low. Thus, we Like exeeptioct to the statement in the project narrative that the lower reach of Springbrook Creek is primary a migration route and that the upper reaches provide rearing habitat (sheet 21 of 26). If not for the presence of the Black River Pump Station large numbers of juveniles from the Green River would probably overwinter in the project area. Furthermore, juvenile salmonids spawned in the Springbrook/Garrison Creek systems may leave thr higher gradient summer rearing areas to ovem rater in the lower reaches. 3W16 172nd Avenue S.E •Auburn, Washtngtoct 9a002 • pM 231- M52•FAX(2M 931-0752 JUN-00-1994 09: 11 FROM US COE-REGULATORY BRANCH TO 92352541 P.03 As the proposed Springbrook Creek proposal will involve considerable disturbance in A-1 and adjacatt to the stream, the maximum habitat value should be gl=ed from the disturbance. Previously, the Tribal Environmental Division requested that the City of Rcnton increase the number of piece of large woody debris associated with this proposal. A copy of that letter is attached. We reiterate the request for increased amounts of large woody debris. Boulders, or even clumps of boulders, will not provide same degree of the needed refuge function during high flow events as wood will. Alternataly, an o mwintering pond, connected to Springbrook Cheek, designed specifically for ovm-vintering could be constructed. Such a pond would include large woody debris and overhanging vegemdan. One day improved passage will be provided at the Black River Pump Station and large numbers of juvenile salmon in search of overwintwing habitat will migrate off the Green River into Springbrook Creek. It is unlikely that at a future date following construction that additional habitat features would be added to this project. Thus, as this proposal gives the opportunity to provide such habitat, the maximum habitat value should be extracted from the proposal. I thank you fbr your attention to our concerns. If you have any questions regarding this tatter call me at 931-0652. Sincerely, Z- d ` 104 Roderick Malcom Habitat Biologist att: I cc: US Fish and Wildlife Service WDFW JUN-00-1994 00: 12 FROM US COE-REGULATORY BRANCH TO 92352541 P.04 r�L MUCKLESHOOT INDIAN TRIBE FTSIMRMS DEPARTMRNT 22 February 994 Ms Lenora Blaurnan, Project Manager City of Renton Planning/Building/Public Works Department 200 Mill Avenue South Renton, Washington 98055 RE: MMS - I405 BOX 99- JT-1 CHAZ(NJL IMPROYF;MINT (S RIN=OOK GRp'�'K 09 WOS) LUA-94-01. CLSP SA V 4M CU Dear Ms Blauman: The Environmental Division of the Muckleshoot Indian Tribe hag reviewed the MDNS issued for the I-405 Box CulvcTVP-1 Channel Improvement Project. We offer the following comments to improve the fish habitat proposals associated with this project. The Environmental Checklist indicates that the proposal's fish habitat components consist of five clusters of three 24 inch boulders in the low flow channel, as well as two pieces of large woody debris with attached root wads. The purpose of these structures is to provide fish areas of shelter from high stream velocities. These is some evidence that as stream discharge increases, the volume of low velocity flow in channels with boulder beams or clumps remains the same, while it increases in channels with large woody debris. Thus, the boulder clusters will be least capable cf providing resting areas when such areas are most required. To improve the amount and quality of such sheltered areas more Iarge woody debris A'I should be considered. The large woody debris could be incorporated into the proposed boulder clusters, or additional large woody debris could be installed. I thank you for your attention to our concerns. If you have any questions regarding this letter call me at 931-0652. 0 elo ti� Roderick Malcom Habitat Biologist cc: WDF i 39015 172nd Avenue S.E. 0 Auburn,Washington 98002• t206)931-0652*FAX(2C6)931-0752 Responses to Letter A Response A-1. The proposed project was designed by Soil Conservation Service engineers and biologists with the review of Washington State Department of Fish and Wildlife (WDFW) habitat manager, Joe Robel (retired), to improve the habitat value of the Springbrook Creek reach within the project area and to meet other important design criteria. These habitat improvements and design criteria included: 1) leaving the existing channel open as an off-channel flood water storage and refuge area for fish during periods of high flows; 2) minimizing removal of vegetation and other disturbance to the existing channel; 3) concentrating low flows in a new low-flow channel to facilitate fish passage without the use of in-stream diversion structures such as concrete walls or earthen berms; 4) gradually blend the new channel with the existing channel to allow free water movement between the two channels to prevent the entrapment of fish in the existing channel; 5) prevent scour of adjacent bridge structure abutments and piers; 6) provide adequate flow capacity; 7) provide adequate fish habitat structures for refuge areas and riparian plantings to provide visual screening and shading; 8) minimize the need for future maintenance. Preserving the existing channel as an off-channel refuge area is preferred to the construction of an overwintering pond because an overwintering pond would increase the amount of disturbance to the existing channel and require more frequent maintenance and monitoring. An off-channel refuge is also more appropriate considering the lack of available land west of the existing channel over which the City has property rights, the short length of the existing off-channel reach, and the restrictions on excavation in the vicinity of the 1-405 bridge structure abutment and piers. A total of five fish habitat structures at the locations shown on page 7 of 26 of the public notice are included in the project. Based on the length of the reach affected by the project, this averages to about one habitat structure per 100 feet of channel. Of the five proposed structures in the original proposal, two were Type B woody debris habitat structures and three were boulder/rock habitat structures as shown on sheet 13 of 26 of the public notice. However, at the request of the Muckleshoot Indian Tribe, the number of Type B woody debris habitat structures will be increased. Two of the boulder/rock structures will be replaced with woody debris habitat structures to double the number of woody debris structures to be installed as part of the project. JUN-08-1994 08: 13 FROM US COE-REGULATORY BRANCH TO /r .06 13 •`''�' =~ United States Department of the Interior O ' FISH AND WILDLIFE SERVICE Ecological Services 3704 Griffin Lane SE, Suite 102 Olympia, Washington 98501-2192 (206) 753-9440 FAX: (206) 753-9008 May 25. 1994 Lt. Colonel Rex N. Osborne District Engineer Seattle District. Corps of Engineers P_0. Box 37SS Seattle, Washington 98124-2255 Attn: Jim Green, Project Manager Re: 94-4-00274 RENTON. CITY OF Dear Colonel Osborne: The U.S. Fish and Wildlife Service (Service) has reviewed the referenced public notice to excavate approximately 2.100 cubic yards (cy) of substrate and place approximately 1.700 cy of selected riprap to construct a new flow channel in Springbrook Creek between SW 16th Street and SW Grady Way at Renton. King County. Washington. Proposed work would entail constructing a new main flow channel to increase floodwater conveyance through the existing I -405 box culvert. The existing flow channel would be maintained to provide off-channel flood storage and enhanced to promote fish rearing and migratory habitat. A pedestrian/bicycle trail would be constructed in uplands along the west bank of the creek. The Service would not object to project authorization provided the existing B-I flow channel is maintained to prevent fish entrapment and stranding during low flow periods _ in addition. we recommend that the riparian habitat removed or 6-2- disturbed as a result of construction activities be compensated for on-site at a minimum 1 : 1 habitat type replacement_ We also request that pedestrian/bike g-3 trails be sited to minimize human intrusion and disturbances to the riparian habitat corridor. These comments have been prepared under the authority of and in accordance with the provisions of the Fish and Wildlife Coordination Act (48 Stat_ 401. as amended: 16 U.S.C. et seq. ) . and other authorities mandating Department of the Interior concern for environmental values. They are also consistent with the intent of the National Environmental Policy Act. C. JUN-00-1994 00: 13 FROM US COE-REGULATORY BRANCH TO 92352541 P.07 Thank you for the opportunity to comment on this matter. If you require additional information . please contact Mr. Dennis Carlson of my staff at (206) 753-9440 or at the letterhead address. Sincerely. David C."TrFederick y State Supervisor do/dm c: EPA. Seattle. Gary Voerman NMFS . Portland. Ben Meyer WDE, Lacey, Tom Luster WDFW, Region 4, Phil Schneider Applicant. Attn: Scott Woodbury 2 Responses to Letter B Response B-1. The proposed project was designed by Soil Conservation Service engineers and biologists with the review of Washington State Department of Fish and Wildlife (WDFW) habitat manager, Joe Robel (retired), to minimize the potential for fish stranding and entrapment during low flow periods. Measures included the project to minimize this potential are: 1) construct a low-flow channel to concentrate low flows into a single channel which will attract and facilitate fish passage without the use of in-stream diversion structures such as concrete walls or earthen berms; 2) gradually blend the new channel with the existing channel to allow free water movement between the two channels to prevent the entrapment of fish in the existing channel as high flows which inundate both channels recede; The purpose of these measures is also to minimize the extent of distrurbance to the existing channel and the need for future maintenance and to maintain the ability of the existing channel to convey high flood flows. The WDFW Hydraulic Project Approval for the project has been issued. Response B-2. The planting plan for revegetation after the proposed construction was based on experience planting in the P-1 channel downstream and replaces the vegetation removed on at least a 1 :1 basis. The number and type of plantings proposed are shown on pages 7 and 15 of the public notice and were selected to enhance the fish and wildlife habitat, and provide visual screening and shading, while still allowing for adequate capacity in the channel to carry flood flows at full plant development. Response B-3. The City of Renton's purpose in siting the pedestrian trail, shown on sheet 4 of the public notice, was based on the following criteria: 1) minimize human intrusion and disturbances to the riparian corridor as appropriate for streams within urban areas; 2) provide a safe design in accordance with the provisions of the Americans with Disabilities Act, other design requirements, and site constraints; 3) minimize the impact to adjacent landowners. Sheet 2 of the public notice shows the conditions existing in the project area at the present time, as well as property ownership information. Constraints which contributed to the trail's alignment as proposed were the location of the existing piers supporting the 1-405 bridge and the existing house located slightly west of the existing channel between 1-405 and SW 16th Street. Also because the City's property rights were limited additional acquisitions were required. Adjacent property owners wanted the trail kept closer to the channel to minimize the impact to their property, which is currently valued at approximately $4 per square foot. JUN-00-1994 00: 12 FROM US COE-REGULATORY BRANCH TO 92352541 P.05 L-FIMER C UNITED STATES DEPi,fiTMENT OF COMMERCE h' National Oceanic and Atmospheric Administration s NATIONAL MARINE FISHERIES SERVICE ENVIRONMENTAL&TECHNICAL SERVICES DIVISION Rion 620 PORTLAND,OREGON 97,232 503r230.5400 FAX 5OY230-5435 F/NW03 Lt. Colonel Rex N. Osborne Corps of Engineers, Seattle District Attn: Mr. Jim Green P.O- Box C-3755 Seattle, Washington 98124-2255 RE: 94-4-00274 ; Excavation for Channel Improvement in Springbrook Creek at Renton, Washington Dear Colonel Osborne: The National Marine Fisheries Service (NMFS) has reviewed the subject Public Notice in which the applicant proposes to excavate 2, 100 cubic yards of material as part of a channel improvement project in Springbrook Creek at Renton, Washington. Our comments are based on NMFS's responsibility for the protection and enhancement of marine, estuarine and anadromous fishery resources and their habitats. NMFS has no objections to the proposed project provided the following recommendations are incorporated into the permit: C-1 • Sufficient water must be provided to the existing channel to prevent stranding of fish during low-flow periods. • Any plants removed from the riparian zone as part of the bank stabilization be replaced in kind. J Questions regarding this letter should be directed to Ben Meyer, of my staff, at (503) 230-5425. Sincerely, Brian. J. Brown Acting Division Chief cc: U. S. Fish and Wildlife Service, Olympia Washington Department of Ecology Washington Department of Fish and Wildlife tf`mot Responses to Letter C Response C-1 . The proposed project was designed by Soil Conservation Service engineers and biologists with the review of Washington State Department of Fish and Wildlife (WDFW) habitat manager, Joe Robel (retired), to minimize the potential for fish stranding and entrapment during low flow periods. Measures included the project to minimize this potential are: 1) construct a low-flow channel to concentrate low flows into a single channel which will attract and facilitate fish passage without the use of in-stream diversion structures such as concrete walls or earthen berms; 2) gradually blend the new channel with the existing channel to allow free water movement between the two channels to prevent the entrapment of fish in the existing channel as high flows which inundate both channels recede; The purpose of these measures is also to minimize the extent of distrurbance to the existing channel and the need for future maintenance and to maintain the ability of the existing channel to convey high flood flows. The WDFW Hydraulic Project Approval for the project has been issued. Response C-2. The planting plan for revegetation after the proposed construction was based on experience planting in the P-1 channel downstream and replaces the vegetation removed on at least a 1 :1 basis. The number and type of plantings proposed are shown on pages 7 and 15 of the public notice and were selected to enhance the fish and wildlife habitat, and provide visual screening and shading, while still allowing for adequate capacity in the channel to carry flood flows at full plant development. JUN-13-1994 00:08 FROM US COE—REGULATORY BRANCH TO 92352541 P.02 nrmr=TR0 Municipality of Metropolitan Seattle • Environmental Flanning and Real Estate Division 821 Second Ave.,M.S.120 • Seattle,WA 98104-1598 • (206)684-1165 Fax(206)684-1900 June 8, 1994 Jim Green, Project Manager US Army Corps. of Engineers P. O. Box 3755 Seattle, WA. 98124-2255 Application for ,Permit File No • 94-4-00274 City of Renton Dear Mr. Green: Metro staff has reviewed thiss -proposal and anticipates no . significant impacts to water quality or to Metro ' s public . transportation services. However, we have the following comments regarding Metro's wastewater facilities. Wastewater Facil-ities Metro's South Interceptor Section 1 is located adjacent 'to the relocated channel, south of I-405 and north of SW 16th Street. ' Construction drawings for the project should be submitted to Metro' s Engineering Services Division for review during design development so that Metro staff can. assess the project' s impacts. For additional information, contact Eric Davison of Engineering Services at 684-1707 . Metro has wastewater facilities in the vicinity of the p_2 construction work site. In order to protect the wastewater facilities in the vicinity of the construction work site, please advise the applicant to do the following. Contact Larry Underdahl, of Metro's Real Estate Section at 684-1402 to discuss insurance and a save-harmless .. Agreement. The applicant will need to provide evidence of liability insurance and will need to enter into a save-harmless agreement with Metro. Contact Ed Cox of Metro' s Engineering Services at 684- 1292 a minimum of 72 hours prior to commencing construction in order to allow staff time to arrange having a Metro inspector on site during construction. Metro has a permanent easement for the sewer line in the area of this proposed development. Before this project is approved, Metro must be assured the right to maintain and repair the sewer line. In the event that the line must be relocated, a new permanent easement must be provided. The Facvdat ax• JUN-13-1994 00:09 FROM US COE-REGULATORY BRANCH TO 92352541 P.03 Jim Green June 8 , 1994 Page Two developer should contact Larry Underdahl of Metro ' s Real J 0-3 Estate section at 684-1402 regarding this matter. Thank you for the opportunity to review and comment on this proposal . Sincerely, ---�60a�-� Katherine McKee; Environmental Planner Environmental Pldnning and Real Estate Division KM:ymg3783 cc: Scott Woodbury, City of Renton Responses to Letter D Response D-1. The proposal was provided to Metro's Engineering Services Division for review. Approval was granted in a May 5, 1994 letter from Metro's Eric Davison. Reponse D-2. The City of Renton will coordinate with Metro staff as advised. Response D-3. The sewer line referenced in the comment letter will not be relocated. Construction activities will be coordinated with Metro to ensure that access to the sewer line for maintenance and repair is provided as needed. P 077 223 178 Recei;t fqr Certified Mail No Insurance Coverage Provided o STATEsE Do not use for International Mail (See Reverse) Uh Uri ch s PO Box 3755 `5eAttTbzl fR°e98124-2255 Postage Certified Fee Special Delivery Fee Restricted Delivery Fee Return Receipt Showing a) to Whom&Date Delivered m Return Receipt Showing to Whom, c Date,and Addressee's Address --3 TOTAL Postage C &Fees 0 Postmark or Date 00 m 3-16-94 € I-405 Box Culvert/PI LL Channel Imp. a STICK POSTAGE STAMPS TO ARTICLE TO COVER FIRST CLASS POSTAGE, CERTIFIED MAIL FEE,AND CHARGES FOR ANY SELECTED OPTIONAL SERVICES(see front). 1. If you want this receipt postmarked,stick the gummed stub to the right of the return address leaving the receipt attached and present the article at a post office service window or hand it to your rural carrier (no extra charge). 2. If you do not want this receipt postmarked,stick the gummed stub to the right of the return address of the article, date, detach and retain the receipt, and mail the article. op 3. If you want a return receipt,write the certified mail number and your name and address on a c return receipt card,Form 3811,and attach it to the front of the article by means of the gummed$ D ends if space permits.Otherwise,affix to back of article.Endorse front of article RETURN RECEIPT+ REQUESTED adjacent to the number. C O 00 4. If you want delivery restricted to the addressee, or to an authorized agent of the addressee, to endorse RESTRICTED DELIVERY on the front of the article. E c 5. Enter fees for the services requester in the appropriate spaces on the front of this receipt.If LL return receipt is requested,check the applicable blocks in item 1 of Form 3811. Cn a 6. Save this receipt and present it if you make inquiry. U.S.GPO:1991-302-916 CITY OF RENTON Planning/Building/Public Works Department Earl Clymer, Mayor March 15, 1994 Ann Urich, Regulatory Branch U. S. Army Corps of Engineers Seattle District P. O. Box 3755 Seattle, WA 98124-2255 SUBJECT: 1-405 BOX CULVERT/P-1 CHANNEL IMPROVEMENT SPRINGBROOK CREEK RIVER MILE 0.5 - 0.7 ARMY CORPS OF ENGINEERS SECTION 404 INDIVIDUAL PERMIT APPLICATION Dear Ms. Urich: Enclosed for your Department's review is the Application for Department of Army Permit for the above-referenced project. The proposed project is the final segment of a series of flood control improvements to the Springbrook Creek/P-1 Channel constructed north of SW 16th Street from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). The enclosed information includes: • Application for Department of Army Permit form • Project Narrative • Vicinity Map and Drawings of the Proposed Work • Certification of Consistency with the Washington Coastal Zone Management Program form The proposed project would provide many benefits including increased flow conveyance capacity and flood storage as well as alleviation of the existing stream bank erosion problem. The project completes the channel improvements for which the existing 1-405 and SW Grady Way box culverts, Oakesdale underpass retaining wall, and SW 16th Street bridge capital improvements were designed and constructed. The project utilizes land area, which by its location and zoning designation is of no commercial use, but will be enhanced to provide a riparian corridor for fish and wildlife habitat. These improvements will also be beneficial to water quality by reducing channel erosion, increasing biofiltration, and reducing exposure to 200 Mill Avenue South - Renton, Washington 98055 THIS PAPER CONTAINS 50 n RECYCLED MATERIAL,1011.POSTCONSUMER U. S. rrr��/.Corps of Engineers 1-405 Box Culvert/P-1 Channel Improvement Page 2 solar induced temperature increases. The pedestrian trail link included in the project will provide new educational and recreational opportunities. Construction is planned for the summer of 1994. Any work within the channel of Springbrook Creek is proposed to be completed during the summer construction window of June 15 - September 15 as approved and in accordance with permit conditions to be established by the Department of Fish and Wildlife (DOF-W). Depending upon the timing for issuance of the Corps of Engineers Section 404 individual permit and uncertainties regarding weather and on-site conditions, it may be necessary to coordinate with the DOF-W an extension of the construction window beyond September 15, 1994, as conditions permit. If you have any questions, or need more information, please call Scott Woodbury, City of Renton Project Manager, at 206-277-5547. Sincerely, X'Z��J cl�' Ronald J. Straka, P.E., Engineering Supervisor Surface Water Utility H:DOCS:94-224:SSW:ps CC: Scott Woodbury Enclosures Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 5 Fish have been recorded migrating upstream at the Black River Pump Station (Renton, 1993c). The fish counter at the pump station had recorded the following numbers for several years for the period from September through January. 1983-1984: 155 1986-1987: 82 1989-1990: 77 1984-1985: 119 1987-1988: 166 1990-1991 : 69 1985-1986: 47 1988-1989: 95 1991-1992: 107 The suitability of Springbrook Creek for salmonid spawning is poor and the rearing habitat is degraded. Upper tributary streams, such as Garrison Creek, may provide spawning and rearing habitat and Springbrook Creek provides the needed migration route. The Department of Fish and Wildlife has indicated that Springbrook Creek does support runs of coho salmon and other anadromous fish including steelhead, and cutthroat trout (Renton, 1993c). The proposed project will help to enhance the habitat quality of Springbrook Creek within the project reach through a combination of riparian plantings and installation of in-stream rock and woody debris structures. The existing channel will be preserved and provide off-channel flood storage that could be used as a resting area during high flows. Proposed construction dates and phasing: Construction is proposed for the summer of 1994. Any construction within the existing channel will be allowed to occur during the summer months of the Washington State Department of Fish and Wildlife "window" from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Because of uncertainties regarding weather and on-site conditions, extension of the fisheries window up to October 15, 1994 may be necessary to complete construction. Any extension request will be coordinated with the Department of Fish and Wildlife. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. The contractor will prepare a construction mitigation plan, outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Specific work proposed: The City of Renton proposes to perform the following activities: 1 . Remove soil blocking the existing box culvert under Interstate 405 (1-405) for the purpose of creating a new inlet and outlet channel for the culvert that will allow flows in Springbrook Creek to pass through. 2. Widen a portion of the existing Springbrook Creek channel between SW Grady Way to SW 16th Street leading to and from the 1-405 box culvert. The existing Springbrook Creek channel parallel to the proposed 1-405 inlet and outlet channel will be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 6 3. Regrade and stabilize a segment of nearly vertical, eroded stream bank on the west side of the existing channel immediately north of 1-405. 4. Install a new pedestrian trail culvert crossing over the south 1-405 roadside ditch that is located on the west side of the existing Springbrook Creek channel. The pedestrian trail will provide a link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north of SW Grady Way and south of SW 16th Street. The maximum depth of fill needed for the pedestrian trail culvert crossing of the 1-405 south roadside ditch is approximately 10 feet. 5. Install five fish habitat structures within the low flow channel to provide resting areas and increased habitat diversity. Two of the structures will be placed within the existing ordinary high water mark of the Springbrook Creek channel. The proposed structures consist of instream boulder groups as well as tree trunk segments anchored into the stream bank and projected out into the channel. 6. Plant dwarf willows along the edge of the low flow channel to provide shade from solar exposure. The willows also protect against erosive flows while presenting minimal restriction of the channel flood conveyance capacity. 7. Plant shrubs to create two wildlife habitat areas adjacent to the channel. The plantings will increase the quality and diversity of habitat above that currently existing in the channel area. 8. Install stream bypass and dewatering systems to maintain construction areas sufficiently dry to complete the proposed work. The proposed channel construction south of the 1-405 box culvert consists of 215-feet of new channel and 200-feet of widened channel construction. The 215-foot new channel segment extends south from the southern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 200-feet of widened channel consists of a 160-foot, fully widened, segment that extends south from the new channel to the south end of the SW 16th Street bridge, and a 40-foot transition segment to blend the fully widened segment to the existing channel south of SW 16th Street. The proposed channel construction north of the 1-405 box culvert includes 50-feet of new channel, 120-feet of fully widened channel, and 90-feet of stream bank regrading and stabilization. The 50-foot new channel segment extends north from the northern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 120-foot, fully widened, segment of the existing channel extends downstream, north of the new channel, to connect to the southern entrance of the SW Grady Way box culvert. The 90-foot length of stream bank to be stabilized is located on the west side of the existing channel, beginning immediately north of 1-405 and extending north to blend with the new west bank of the proposed widened channel section. To maintain fish passage, a low flow channel with 12-foot bottom width and 3 horizontal to 1 vertical side slopes is included in the design of the new and widened channels. The proposed low flow channel connects to one of the five bays of the I- 405 and SW Grady Way box culverts which have a lower bottom elevation than the other bays. The channel design slope is very gradual at 0.02%, and the bottom elevation varies from 0.09-feet at SW Grady Way to 0.24-feet at SW 16th Street. The Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 7 existing channel bottom elevation varies from 0 to 2 feet from SW Grady Way to SW 16th Street (1929 NGVD datum). The depth of the low flow channel is 2.5-feet and the overall top width is 27-feet. The maximum depth of excavation from existing to finish grade is approximately 16-feet. The proposed main channel, including the low flow channel, averages 65-feet in width. The design slope of the main channel is very gradual at 0.02%, and the bottom elevation varies from 2.59-feet at SW Grady Way to 2.74-feet at SW 16th Street (1929 NGVD datum). The design channel side slopes vary between 2 or 3 horizontal to 1 vertical. Three concrete wing walls totaling 100-feet in length and one rock-filled gabion wing wall 80-feet in length will be installed at the entrances and exits to the SW 16th Street bridge, 1-405 box culvert, and SW Grady Way box culvert. However, these structures are located out of the existing ordinary high water mark of Springbrook Creek. To construct the proposed channel, the existing material necessary to achieve the proposed channel section subgrade will be removed. The total amount of excavation is estimated to be 15,700 cubic yards (CY), of which an estimated 2,100 CY will be removed from the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. Subgrade is generally 1.5-feet below the proposed finish grade, with a portion of the proposed channel directly adjacent to the Oakesdale Avenue SW underpass and underdrain system over excavated to 5-feet below the proposed finish grade to allow placement of a watertight PVC membrane. The underdrain system, which protects the Oakesdale Avenue SW underpass from groundwater seepage onto the roadway, must be protected from the short-circuiting of water from the proposed channel which will be located directly adjacent to the underdrain system. To prevent this piping of water from the channel through the soil and into the Oakesdale Avenue SW underdrain system, which is lower in elevation than the proposed channel bottom, the membrane will be connected to the Oakesdale Avenue SW P-1 channel retaining wall and extended west across the width of the channel (CH2M Hill, 1987). This increases the flow path that water from the channel must travel to reach the underdrain system and will effectively reduce the potential for removal of finer particles from supporting soils due to piping and overburdening of the underdrain pump system. The use of sheet piling driven into the channel bottom to lengthen the flow path was also considered, but was not selected because the piling may reach refusal too soon to provide effective protection. The total estimated quantity of fill for the channel work, including filter material and rip rap, is 8100 CY, of which an estimated 1,700 CY will be placed in the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. A total of 3 1/2-feet of fill material will be placed on the PVC membrane to achieve subgrade. To reach finish grade on a portion of the channel, including the low flow channel, a total of 1/2-foot of sandy filter material and 1-foot of clean, loose rip rap will be placed on the subgrade. Other areas of the channel not receiving rip-rap that are subject to potential erosive flows will, be brought to finish grade with fill material and overlain with an excelsior blanket. This will protect the exposed soil and allow vegetation to become established to further protect against erosion. Construction of the pedestrian trail shown in the plans will require an estimated 500 CY of fill to achieve subgrade, of which 40 CY will be placed in the area defined by Wetland A. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 8 Fill material will be well graded sand to silty sand. The material will be from an approved gravel mining site and will arrive to the site via 1-405, SW Grady Way, Oakesdale Avenue SW, and SW 16th Street. The specific source of the fill material and haul route is unknown at this time, but will be provided as a part of the final construction management plan, and will be submitted for approval to the City Development Services Division. Mitigation: A copy of the Mitigation Measures document issued by the City of Renton as required under the State Environmental Policy Act is included as Appendix A. An overview of the special plans and reports to be prepared for the project is provided in a subsequent section of this project narrative. The proposal includes fish habitat components developed in consultation with the Washington Department of Fish and Wildlife. Bankers dwarf willow cuttings (salix cotteti) will be planted on 2-foot centers along both banks of the low flow channel to provide shading and visual screening for migrating fish. The drawf willow does not develop into a large tree that would present an obstruction to the flood conveyance capacity of the channel, but will temporarily lay over during times of high flow. Five in-stream structures of three different types are also included in the project design to create resting and hiding areas for migrating fish. These structures include the following: A. Placing groups of three 24-inch diameter boulders in the low flow channel. B. Placing large diameter boulders in the low flow channel with rock rip rap around the boulders and up one of the side slopes of the channel. C. Anchoring a section of tree trunk with the root wad exposed in the channel bottom at a 30-degree angle to the cross section of the channel. Two wildlife areas are also to be established with the planting of approximated 300 shrubs at 3-foot centers. The shrub type will be Pacific Serviceberry, Tall Oregon Grape, Redosier Dogwood, and Common Chokecherry. These two areas will have four rows parallel to the channel with groups of 3 to 5 plants of the same species staggered between the rows. Special Plans and Report: The following special plans and reports will be prepared to ensure that potential impacts are avoided if possible. Where impacts cannot be avoided, the plans and reports will identify methods to minimize anticipated impacts and to ensure that these impacts will be mitigated. Erosion control plan. Before any construction activity occurs, a pre-construction meeting with the contractor will be held with the project engineer and the City. Prior to the meeting, the contractor shall provide to the City and Engineer an erosion control plan for review and approval. The plan shall be based on the King County Surface Water Design Manual, as adopted by the City of Renton, proper construction practices, and any measures detailed in the contract plans and specifications. The contractor will Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 9 also be responsible for addressing any state and federal permit conditions required for the project. Erosion and sedimentation controls, such as straw bale barriers, silt fences, and straw mulch for temporary protection of exposed soils should be applied during construction. Stabilized construction entrances and washpads should be installed at the beginning of construction and maintained for the duration of the project. As construction progresses and unexpected or seasonal conditions dictate, the contractor shall anticipate that more erosion and sedimentation control facilities will be necessary to insure complete siltation control on the project site. It shall be the obligation and responsibility of the contractor to revise or modify the erosion control facilities to meet any new conditions that may be created by construction activities and to provide additional facilities, over and above minimum requirements, as may be needed to protect adjacent properties and water quality of the receiving drainage system. Any construction within the existing channel will be restricted to during the summer months of the fisheries window from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. As noted below the contractor will prepare a construction mitigation plan outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Project design final stabilization measures include a 1 to 2-foot deep rock rip rap protective layer placed over disturbed areas under and adjacent to the SW 16th street bridge, the low flow channel area, and a portion of the west bank of the channel between 1-405 and SW Grady Way. A 0.5-foot deep layer of filter material will be placed under the rip rap to prevent washing of any finer material from the underlying soil. Wire mesh gabions will be placed along a portion of the west bank just north of the SW 16th Street bridge to protect against erosive flows. A layer of filter material will be placed behind the gabions to prevent washing of finer material from the protected bank. All disturbed areas will be seeded with a grass mixture immediately following construction, except the low flow channel and within the drip line of bridges. Seeding shall be started as soon as definable segments of the excavated channel are completed as determined by the Engineer. Permanent seed mixtures shall be applied between April 1 to October 15. Winter seeding shall be applied outside the permanent seeding dates as needed, and followed with permanent seeding the next spring as approved by the Engineer. Following permanent seeding, a portion of the area outside the low flow channel that was disturbed during construction will be covered by an excelsior blanket for erosion control and to aid vegetative establishment. Construction mitigation plan. Prior to the preconstruction meeting the contractor shall also provide to the City and Engineer a construction mitigation plan outlining the construction schedule and phasing, the hours of operation, the proposed earthwork material source/disposal site and haul route, and any measures to be implemented to minimize the impact of construction to surrounding property owners and public streets. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 10 Dewatering plan. Ground water withdrawal for temporary dewatering purposes is anticipated to be necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for the proposed channel. Geotechnical reports for other projects in the project area describe ground water levels at relatively shallow depths (CH2M Hill, 1987; GeoEngineers, 1984 and 1988; Hong, 1986). Because of potentially high ground water conditions the contractor for the proposed project will be required to determine if conditions at the time of construction are low enough to allow construction. If not, the contractor will be required to construct well points at strategic locations in the project area to draw down the water table sufficiently. Before any dewatering the contractor will be required to submit a dewatering plan for City and SCS review. The amount of ground water to be withdrawn is a function of the soil conditions, water table elevation, required drawdown, and wellpoint location and depth. Therefore, the number of wellpoints and the amount of groundwater that will be withdrawn cannot be estimated at this time. All ground water withdrawals are to be directed, if conditions permit, into the METRO sanitary sewer, temporary settling pond, or other device to minimize the discharge of iron rich water into Springbrook Creek. Springbrook Creek bypass plan. Springbrook Creek will be routed to bypass the work area while construction is in progress within the existing stream channel. The bypass is anticipated to be accomplished by pumping or gravity flow through a piped conveyance or open channel, or some combination of these methods. This is necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for the proposed channel. Bypassing the surface water flow around disturbed areas will also minimize the erosion potential of the exposed soils and protect the water quality of Springbrook Creek. The sequence and timing of the any bypass is to be contractor determined, subject to the review of the City and SCS. Any proposed surface water bypass will also be reviewed by the Washington Department of Fish and Wildlife and coordinated with adjacent property owners. It is anticipated that construction of the channel north and south of 1-405 will occur in two separate phases so that the bypass distance will be reduced from that required to bypass the entire reach. The actual quantity of water to be bypassed depends upon the weather conditions at the time of construction. By working in the summer months the amount of flow to be bypassed will be minimized. Sediment quality report. Because the reach of Springbrook Creek within the project area is downstream of potential point and non-point pollution sources, the sediments in the stream bed will be analyzed to determine if contaminants exist. Contaminants are known to be present in the Springbrook Creek system and have been monitored at several locations (Renton, 1993c). One of the monitoring stations was at SW 16th Street bridge. Contaminant levels in sediments sampled at this station in 1992 were determined to be below Model Toxics Control Act Cleanup Regulation (WAC-173-340) cleanup levels. These levels apply to sediments disposed of on land other than in a permitted landfill. Dredging or other construction disturbance as part of this project could cause contaminated sediments that may be in the project reach to be suspended and carried downstream. Contaminants that may be in the dredge spoils could also be a potential - health risk if not disposed of properly. Although sampling at SW 16th Street indicated that special disposal of the sediments would not be required, SCS has contracted with Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 11 Herrera Consultants to test a surface sample and a sample at one foot depth at a total of four locations within the project area. The field work was complete at the end of September and a final report of the results is expected in April 1994. References: CH2M Hill. 1987. Geotechnical Report, Oakesdale Avenue. Bellevue, WA. Prepared for City of Renton, Renton, WA. Federal Emergency Management Agency. Federal Insurance Administration. 1989a. Flood Insurance Rate Maps, King County, WA, and Incorporated Areas. September 29. Bothell, WA. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 12 1989b. Flood Insurance Study, King County, WA, and Incorporated Areas, Volumes 1 , 2, and 4. September 29. Bothell, WA. FEMA. See Federal Emergency Management Agency. GeoEngineers. 1984. Report of Geotechnical Investigation, Box Culvert, SW Grady Way. Bellevue, WA. Prepared for City of Renton, Renton, WA. 1988. Report of Geotechnical Investigation, Proposed Box Culvert, SW 16th Street. Bellevue, WA. Prepared for City of Renton, Renton, WA. Hammond, Collier, Wade-Livingstone. 1992. City of Tukwila Nelson Place/McLeod/Boeing CSTC Storm Drainage Study Technical Report. Seattle, WA. Prepared for City of Tukwila, Tukwila, WA. Hong Consulting Engineers. 1986. Geotechnical Engineering Evaluation for P-1 Channel - SR405 Box Culvert. Lynnwood, WA. Prepared for ABKJ, Seattle, WA. Northwest Hydraulic Consultants. 1991 . East Side Green River Watershed Plan, Hydrologic Analysis. Seattle, WA. Prepared for R. W. Beck & Associates and City of Renton, Renton, WA. R. W. Beck and Associates. 1992. East Side Green River Watershed Plan, Hydraulic Analysis Report. Seattle, WA. Prepared for City of Renton, Renton, WA. Renton. 1990. Shoreline Master Program. Renton, WA. 1993a. Interim Zoning Code. Renton, WA. 1993b. Interim Land Use Element of the Comprehensive Plan. Renton, WA. 1993c. Black River Basin Water Quality Management Plan. Seattle, WA. Prepared by R. W. Beck and Associates and Herrera Environmental Consultants in association with Jones & Stokes Associates, Inc. SCS. 1973. Soil Survey of the area of King County, WA. Washington, DC. . 1989. Letter to Rod Den Herder summarizing biological assessment of the SW Grady Way to SW 16th Street realignment. June 1. Spokane, WA. 1993a. Letter to Roderick Den Herder summarizing wetlands determination - SW Grady Way to SW 16th Street. June 1 . Olympia, WA. . 1993b. Letter to Roderick Den Herder with additional classification of wetland determination for ditch on the south side of 1-405 - SW Grady Way to SW 16th Street. November 3. Olympia, WA. . 1993c. Letter to Roderick Den Herder with additional classification of wetland determination for ditch on the south side of 1-405 - SW Grady Way to SW 16th Street. November 29. Olympia, WA. H:DOCS:94-227:SSW:ps APPENDIX A DETERMINATION OF NON-SIGNIFICANCE-MITIGATED MITIGATION MEASURES APPLICATION NO(S): LUA-94-001,ECF,SP,SA,V,SM,CU APPLICANT: City of Renton, Surface Water Utility PROJECT NAME: 1-405 Box Culvert/P-1 Channel Improvement (Springbrook Creek) DESCRIPTION OF PROPOSAL: The purpose of this proposed project is to complete the construction of P-1 Channel improvements from SW Grady Way to SW 16th Street. The proposed project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel made from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). The existing Springbrook Creek stream channel, which conveys drainage from a 22 square mile watershed, directs flows north under the SW 16th Street bridge toward the 1-405 box culvert. However, since the corresponding channel improvements to direct flow into the box culvert were not constructed, fill now blocking the 1-405 box culvert forces the flow around the box culvert to the west and underneath the 1-405 bridge adjacent to the box culvert. Construction of these improvements is planned now to improve the functioning of the channel. A pedestrian trail will also be established pursuant to the City's Master Trails Plan. LOCATION OF PROPOSAL: Springbrook Creek/SW Grady to SW 16th St. MITIGATION MEASURES: The Environmental Review Committee issued a Determination of Non- Significance - Mitigated with the following Mitigation Measures: 1. To address construction impacts of the proposed project on the natural and built environment, the applicant shall submit a construction mitigation plan for approval of the City and SCS. 2. To minimize the potential impact of temporarily routing Springbrook Creek to bypass the work area and implementing dewatering operations while construction is in progress within the existing stream channel, the applicant shall submit a bypass plan and dewatering plan for approval. 3. To address construction impacts of the proposed project on the natural and built environment, the time and extent of disturbance within the channel shall be kept to a minimum. As soon as definable segments of the work are determined to have been completed, or as unexpected and seasonal conditions dictate, disturbed areas are to be stabilized using the methods proposed in the project design, such as seeding, plantings, rip rap, and erosion control blankets. 4. To minimize the impact of temporarily preventing passage of fish through the channel, construction within the existing channel will be restricted to the period between June 15 - September 15 as approved and in accordance with permit conditions to be established by the Washington State Department of Fisheries. 5. In order to determine if pollutants that may be in sediments to be removed during the project are below levels requiring special disposal and/or if additional sediment testing is required, the applicant shall submit a sediment monitoring report to the City and SCS for review. 6. To minimize potential impact to cultural resources that may be present in the project area, the individuals involved with construction will be required to watch closely for buried artifacts and remains, and if found, cease work and provide notification to SCS, the City, and the Washington State Historic Preservation Officecto determine the course of action. Advisory Notes to Applicant: The following notes are supplemental information provided in conjunction with the environmental determination. Because these notes are provided as information only,they are not subject to the appeal process for environmental determinations. 1. In accordance with standard contract requirements, normal working hours will be between 7:00 a.m. and 6:00 p.m., Monday through Friday. Permission to work other hours and times must be obtained from the City and may be subject to the City Noise Level Regulations and other conditions. The construction mitigation plan should include advance notification and other provisions as needed to minimize the impact of construction on the occupants of the existing house adjacent to and west of the project area. 2. To minimize the potential for impact to existing structures, the applicant and construction contractor shall coordinate with METRO and WSDOT as applicable. 3. The mitigation measures included in this determination were proposed by the applicant in the project application documents. It is the responsibility of the applicant to ensure that all mitigation is implemi rated as proposed, and that any additional information requiring review is submitted and approved prior to constn tion. mitmeas - 1 - 02/03/94 t AI LROAD -- — o(3 CREEK \ -- - -_-- — ---- --;� , GOi)ourse Sw Uy " . ■ l j 30 Sewage _ M;16 T— -- - �!longacre$ipi-'- i I 11 L OC I Track _BM -- IY, Reservoir 1 Z �m � I _ 25 --- " .30 SOURCE: USGS, 1973. RENTON, WA w KAc cowry QUADRANGE MAP r+vaccr r crn ntw 0 1"=2000' 2000 a i A ti ( IN FEET ) No SCALE o i 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING COUNTY OF: KING = DATUM: N SHEET TITLE: VICINITY MAP STATE OF: WASHINGTON ADJACENTT PROPERTY Y OWNERS: DRAWN BY: SSW/MDD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 SCALE: AS NOTED SHEET: 1 OF 16 DATE: 3-15-94 J i W t SW GRAD Y WAY BOX CUL VERT \ 11Ar GPpD{ / LEGEND. lip) PROPER T Y L INES ROAD CENTERLINE / OAKESDALE AVE SW RETAINING WALL --- /-405 BOX CULVEERT 1-405 BRIDGE BRIDGE ABUTMENT - '1.__ S.R. IOS __ AND SUPPORT PILING t _ -- -- ----- - ® A; WETLAND A --- _ _ ----- -� OAKESDALE AVE SW RETAINING WALL \ APPROXIMA TE TOP APPROX. TOP OF BAN\ Oj \ `.� \ OF BANK SINGLE FAMIL Y RESIDENCE SW 16TH ST APPROX. ORDINARY \ �N HIGH WA TER MARK \ ` \ BRIDGE (APPROX.. AVE 1 1, DEPTH 2-4 FT) �� I -_ - -- W�- ---- SW. 16 IN SL ---- DIREC77ON OF FL OW —REIAINW RETAINING WALL FOR SPRINGBROOK a ti CREEK © - 0 ' o PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING COUNTY OF: KING DATUM: 1929 NGVD SHEET TITLE: EXISTING CONDITIONS PLAN z STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: 1. KING COUNTY DRAINAGE DIST. NO. 1 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON o 2. PUGET WESTERN, INC. 3. CITY OF RENTON SHEET: 2 OF t 6 4. GROUP HEALTH COOPERTIVE 0 1"=120' 120 DATE: 3-15-94 5. BOEING COMPANY 2 6. WASHINGTON DEPT. OF TRANSPORTATION 7. MUNICIPALITY OF METROPOLITAN SEATTL ( IN FEET ) c lD O rn m • J f. `\ l 0 1"=1 2 0' 120 IN FEET ) 4- WETL AND 4"""L7lCA 1E0 WITH/N /-405 ROADS/DE t .`i`, DRAINAGE DITCH, IS '. `:ix.l �— .....__ ......—_....... ASSUMED NOT. TO- BE . . . "WA TERS OF THE UNI TED " STA TES', PER 40 CFR r) �. ' ...._— - 328.3 A THEREFORE CU , . ( —FILL 5- - FILL FOR PEDESTR%AN —' �� '•` �-°°~: '" TRAIL CULVERT CROSSING 1��,•�..:' � � -- -- /S NOT REGULATED. �" _ ......__- -.• �.....--_ ...__�.���=�-... LEGEND: AREA OF HIGH IMPACT L r ` } 't +, WITHIN EX/STING ORDINARY j �`• ' HIGH WATER MARK DUE y, TO CUT/FILL FOR PROPOSED CHANNEL. _] AREA OF LOW IMPACT W THIN ORDINARY HIGH i t _� f ` WATER MARK DUE ........�---..:... _.... ` TO TEMPORARY DEWA TIRING/ ............. i �T _ �t. _w. INCIDENTAL DISTURBANCE - -......... NECESSARY TO ACCOMPLISH a PROPOSED CHANNEL calvSTRUCTLON- PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK. MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD COUNTY OF: KING SHEET TITLE: AREAS WITHIN ORDINARY STATE OF: WASHINGTON o ADJACENT PROPERTY OWNERS: HIGH WATER MARK IM- SEE SHEET 2 OF 16 PACTED BY CONSTRUCTION. APPLICATION 8Y: CITY OF RENTON o SHEET: 3 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED i 0 m 0 m m 40' CONC. < WING WALL WIDENED CHANNEL 0 1' -120 120 ( IN FEET ) 50" /-405 BOX CUL IVERT 0U7ZET CHANNEL 9d STREAM^ ' ' I NIERLiWE L BW FLOW CHANNEL BANK IMPR0VEMENT _ . .... CE `• ° `. \• - CEN_ .1F�L/NE-HIGH FLOW CHANNEL 20' CONC. WINGWALL — - "-- 40' CONC. WNGWALL _ APPROX.. 7RA/L ALIGNMENT T 7 5'`J-405 BOX CUL VERT INLET CHANNEL EXIS77NG CHANNEL ..; '• TO REMAIN LEGEND: y NEW CUT/fILL SLOPE C \[€€€€ PEDES7R/AN TRAIL 80' GABION WALL 1I"':WIDENED CHANNEL NEW AmEsnvA,v/mc►cz£ 7RA/L ACCESS CORRIDOR ;iissi: •. ' 1 O£7pulA£D BY-ary— 7RANSPWTA A0V DV NS70V 1 s *t .......... 1 h a PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO y BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD COUNTY OF: KING —^ SHEET TITLE: PROPOSED CHANNEL AND STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: PEDESTRIAN TRAIL PLAN APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 ° i D SHEET: 4 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED Q 2 • W 120 ,A ( IN FEET ) , 17 , 0 , , , , a 1 �� \`a �• , L '•,t .t ' •L 1. y 1i ...................... _y_..:.....t__----------- � ......... ..1.. . ..._,..... — y---------- a 1 ti i .........._/..� ... .. .-...y _._..................... PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON m AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING H DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL CROSS COUNTY OF: KING STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: SECTION REFERENCE PLAN SEE SHEET 2 OF 16 APPLICATION BY: CITY OF RENTON i SHEET: 5 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED Q . 2 W E N m 0 rn m \ _IV 0 1" 120' 120 IN FEET ) 1 • , , , L L EGEND: ® P VC MEMBRANE • IN, i 1 �' 1 _�a..... ......... a ...._........................_......... 'n O PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON o AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING c^ DATUM: 1929 NGVD SHEET TITLE: PVC MEMBRANE PLAN COUNTY OF: KING i ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON APPLICATION BY: CITY OF RENTO SEE SHEET 2 OF 16 N o 2 SHEET: 6 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED Q 2 W t �\ 5 IN FEET ) -1 ('_ P , : .—a.. LEGEND: O FISH HAB/TAT COMPONENT BANKERS DWARF WILLOWS ® WILDLIFE HAB/TAT PLANTING Y ?w ti If 11 NOTE. ._ _�.......^_......... .............. SEE SHEETS 13-15 ---..........---........... ...... ...... Q a FOR HABI TA T DETAILS -........ . .. PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM PI CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RIM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING H DATUM: 1929 NGVD SHEET TITLE: FISH AND WILDLIFE HABITAT COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON MITIGATION PLAN SEE SHEET 2 OF 16 APPLICATION BY: CITY OF RENTON o SHEET: 7 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED 2 \ r'\ \ JF p 1 =1 20' 120 ( IN FEET ) 13 ram• a, , , .R .� ;1 \ �.:. Y LEGEND: AREAS COVERED BY RIP RAP AREAS COVERED BY EXCELSIOR BLANA-4-T (SEE C116 FOR DETAILS) NOTES: — I: '-_€.: t _:a vr' _c 1. ALL DISTURBED AREAS, EXCEPT THE LOW FLOW — — y —-—-—-— a CHANNEL AND WITHIN THE DRIP LINE OF BRIDGES, WILL BE COVERED WITH TOPSOIL AND SEEDED _- .......... . - - - •.•• WITH GRASS MIXTURE. 2. SEE SHEETS 4 AND 10-12 FOR CHANNEL _ SECTION LOCATION AND DETAILS. r Q PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON 2 AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO N BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING h DATUM: 1929 NGVD SHEET TITLE: STABILIZATION PLAN COUNTY OF: KING i ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON o APPLICATION BY: CITY OF RENTON o SEE SHEET 2 OF 16 D SHEET: 8 OF 16 DRAWN BY: MDD _ DATE: 3-15-94 SCALE: AS NOTED i c Cm 0 rn m 20 -EA we/-I05 BAY au 1vu 01SINC SW QlADY WAY 6YJ+"CIIIEMr� 70 / �APPROK CENJfF[NE CRLYArO VW A!F 15 15 "P-14ANAE1BOr1W /0 O OW CkANNa SOMW 5 KYBRANE 5 O O _5 675+00 676+00 677+00 678+00 679+00 PROFILE CHANNEL sr lens sr a raE 20 Ewsmw 1-I05 aox act wRr 20 15 -_._._._._.-.-.-._._._ 15 A,PPR7x{Q?CtW 50a'ACE - �� to 10 APPROX i 5 a+A 5 r_ - O ___J`101YADK QldANEL @OlIidIL_-----_---- 0 _5 -5 670+00 671+00 672+00 67J+oo 674+00 675+00 675+50 PROFILE L CHANNEL LEGEND: ® CU7/F7LL WITHIN AREA OF ORDINARY NIGH WA7ER MARK a H ti 0 Q, 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: I-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING y DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL COUNTY OF: KING STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: PROFILE rON � DRAWN BY: MDD SEE SHEET 2 OF 16 APPLICATION BY: CITY OF REN' SCALE: 1"=100' HORIZONTAL SHEET: 9 OF 16 1"=25' VERTICAL DATE: 3-15-94 J i W 20 10 _AwsnlVG WNGWALL�1 t;r s 21 21 IS �I of ro APP X G?OAYO SURFACE ,j �I to Q. 3 j EX/S77NG R£7A/N/NG WALL F"I 1 5 O1= — f7IV15H CRAVE Cvl ° f7L MR 0 I I -5 _3 -S7 -30 -.3 _40 -SS -JO -13 -Xl -IJ -!O -S O J to IS 10 25 Jft JS "o 60 65 1t1 SECTION 20 EX/SING SW 167N ST IR/111 t�,t 20 ----------------- ------------------' e f5 2 s 22 e 3 t° APPROX. 6ROUIV19 SURFACE�n1II 6 IC=i j.� O - la ---- --------- I ddd 14 10 ° f7L 7ER ° I _T -3 -55 -50 -45 _w -m -J17 -11 -10 -15 -Jo -1 0 1 10 13 10 SJ .lU A !0 I3 10 31 60 63 10 SECTION EX/S77NG REMN/NG WALL EX/SANC WWWALL p ? 10 icd `I APPROX. GPGUNO S7/RFAC'E 15 �I u 12 U 10 to �F7N/-W CRAOC 14 O I 5 IEv -5 ROCK R/PRAP ° ° f7L -5 -s -55 -50 -q -IO -A __v -15 -So 0 5 10 15 20 15 30 L IO IS 50 55 6o 55 70 SECTION LEGEND: ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK a (OH WM). °o 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON o SCALE: 1"=20' HORIZONTAL SHEET: 10 OF 16 1"=20' VERTICAL DATE: 3-15-94 2 C (L-APPROX CR.'SuRFACC Is _ ------�i2------- IL Is �!Q �T ._._.---- ___ _ �I .. -—---------------- _____ m ,-�iAX ELEV 80 rYP �j 'o I I �-EXCaS/OR BLANKET 1 EX/SANC RETAINING WALL � � 5 r ROCK R/PRAP EXCEZSICR BUNKET I PVC MEMBRAIVE I TIL 7�R _5 -5 -N -15 -10 -55 -SO -45 -IO -35 -30 -75 -70 -15 -10 -5 Q 5 10 15 10 75 A JS r0 IJ 50 33 SECT/ON 70 I i rAPPROX p40UN0 SURFACE ,�.------------------- -15 �i ----------- /0- -10 j EXCELSIOR BLANKET EX757NC RETA/N/NG WALL 5 00 NOT DISTURB 5 ROCK RYPRAb ° EIL 7ER ° PVL'MEMBRA -5 -3 -m -30 -73 -XI -13 -10 j -J q S 10 15 SO 7J A M 4o 45 50 SJ i I SECT/ON 20 EX7SANC MANHLYE CAB/QVS W 20 1 = 15 - ---- APPROX.. GROUND SURFACE Is 2 Iv EXLEZS/GR BLANKET �Z to __._._--�_ ___.-.-_.-----.-___-__._._._._.- V _ 1° I� I� CUSANC 90"R Q 10 EXCEZS70R BLANKET EX/SANG RETANV/NG WALL 5 MEMO WASTE � I�1 Iv 5 SEWAGE Cs1 NE I `, 0 I ° --- PVC.hEMBRANE l �flL I VVV -5 -5 -m -65 -so - -30 -t5 -!O -JS -Sn -SJ -10 -IJ -10 !0 15 X! IS Jo Js ro ss So SS SECTION LEGEND: ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK (OH WM). 0 ti PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING h DATUM: NGVD SHEET TITLE: CHANNEL SECTIONS ADJACENTT P COUNTY OF: KING PROPERTY OWNERS: STATE OF: WASHINGTONN BY: MDD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF i6 DRAW 0 i SCALE: 1"=20' HORIZONTAL SHEET: 11 OF 16 1"=20' VERTICAL DATE: 3-15-94 i • W E XJ 2CJ I I l_ rs 31 21 APPROX CROUN0 SURFACE n O� ZI ................... r0 Jo ----------- NEW 30IZ I ' RETAIN/NC \� y I EX/SDNC RETAIN/NC WALL s WALL ROCK Eve RIPRAP J I O EXCELSWR SLANK£T E7C TER o F7L TER -3 -J -JD -65 -60 -3J -JO —3 -0 -J3 -m -IS -70 -rJ -10 -J S r0 rJ Jo IS A u �O IS 30 S1 PVC MEMBRANE SECTION YO ]0 I ----------- -- L/CNT, LOOSE RIPRAP W rs 31 21 rAPPROX. CRCU SURFACE 'S C U m MAX ELEV. B.0 IYP -•.•_, �I �-•. _._---__ r0 ..:.,: .. I I ROCK �I t*j _ fk�r/yy ppAOL- EXISTING RETAIN/NC WALL 3 RIPRAP 0 Exm_7OR BLANKET 0 Rl 7ER _5 s -m -65 �o -5.5 -50 -s5 -.0 -is -JO -25 -ZO -I5 -r0 -5 1! 5 ro J5 ]O 15 JO m M ♦s 50 Ss PVC MEMBRANE SECTION 20 20 I I 15 31 2 13 10 rAPPROX CROUNO SURFACE _______________.___._ l0 3 ROCK f N/5N 6RADE EX/SANG RETAAV/NC WALL J ._._._._._._._._._._._.__._._._._ RIPRAP 0 ._._._._._—_-- EXCEZ9 R BLANKET 0 fX 7FR _5 -5 -]O -65 10 -15 -50 -45 -40 _J5 -M -25 -20 -15 -10 -5 ¢ J JO JJ PO 13 JO JIS IO es 50 S5 I I PVC MEMBRANE SECTION q LEGEND: m ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK (OHWM). Q 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: NGVD SHEET TITLE: CHANNEL SECTIONS ADJACENTT P COUNTY OF: KING PROPERTY OWNERS: STATE OF: WASHINGTONMDD: APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 DRAWN BY 0 SCALE: 1"=20' HORIZONTAL SHEET: 12 OF 16 3-15-94 1"=20' VERTICAL DATE: W i • W c B A _ _ j. LOWS CHANNEL RES1INC BOULDERS (see deloA B RESRNC BOULDERS pIW LOG MIN RO7T WAD wa / o 1/1'CAL *W ROPE O RIPRAP COVCRE7F BLOG!VK (m detoA A) O PLAN N.r.soj PLAN IV.TS FISH HABITAT COMPONENT FISH HABITAT COMPONENT "A" B"" 1 11'DIA. f7SN J 11'OX R-W RESI7NC BOULDERS RESINVO Botts (LOW fZOW (sss detoA B) LOW fZOW ROCK RIPRAP CtwaaE7E BLOCK (see detai A) 50' 10.0' tLO-G w-u ROOT WAO O" TAKE ZACK O/T OF 1/1'CAL V. MIRE ROPE SECTION SECTION N.T.S. NTS w m ti O U� 3 O h PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® I-405 CROSSING COUNTY OF: KING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS:SEE SHEET 2 OF 16 DRAWN BY: MOD APPLICATION BY: CITY OF RENTON SCALE: AS NOTED SHEET: 13 OF 16 DATE: 3-15-94 i W 15 REBAR IMBEDDED 6' INTO CONGPETE I I 1-7 o- 2' J 14"DIA. FISH RESANC BOULDERS _ -�eNANNw DETAIL A 74: R/PRAP N.T.S 4inserted 4"DIA. f7SH RESANG SOUL OCR 4(V A?f PLAN ROOT WAD N.T.S /8 REBARNOTE.' Fasten trsh restingtree with 0 reborFISH HABITAT COMPONENT through the tree a . RESANG BOULDER boulder Use on epoxy system to anchor the rebor to the PLAN stone. A. rk OT WAD 24"D/A..F FSH RESANG BO J 24"-DIA. FISH LOW FLOW e RESANC BOULDERS TREE A2UNK ROt�C R/PRAP `r CUT ROOTS NEXT TO UMER 0,. CHANNEL BOTTOM ELEI/A TION SECTION Qj DETAIL B N.T.S o0 N T.S. 2 Q. Q. t PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO y BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING STATE OF: WASHINGTON � ADJACENT PROPERTY OWNERS: E? SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON SCALE: NOT TO SCALE SHEET: 14 OF 16 DATE: 3-15-94 i W E g o JO'lYP N�z 000 k 0 0—r LL OQELd C AfT z coon c. .a o✓e w P a r.e 000100— O 0*0*0®®G—A•EOQi(R acerr0ca Noot.07 u... A,e or�r: 0 4 0 C 911"0 Cr 0 0 0 O O—CYJ —OAOTac— J r�r aoor.++v Po.oa'.ror ue a'na✓a JO'cc Ntn 0 ®0®®®0 0 a O—PAafC SEANC£RfWl pAnft•rvpq�.e a.r...n ro.a � �aGANfL BJl)q/ w WILDLIFE hABITAT PLANTING DETAIL N rs f c r 0000000000000006 O7o00 0 av ' LOWflO* lopsof (O 'M PCAr YOBO—tWC) 7. Oo 00�-- 00000000 MN . o r 7 c PLANTING DETAIL N7LLOW PLANTING DETAIL N rs N T.S PLANTING LIST WAN 5C7EN77r7C NAME CO VaV NAME 9ZE 9ZE S70 SALLY CT177EA BARKERS OWAAlr II.rLW I R Iu9]aIXl�Wr7Y.Y�7 R a 13 R aOlVA PACYC JEJPNQBERRY LYW AAYE7C A',a 71 ✓ANOJA AO.1'rY,W rALL OPCGTIV OPAPE J CYW ANEJe R.a 75 CVRWS S7MOWIA4 -Mll OCCMC� pd. LTWrANfJQ J R.n 73 fiPU1VS NB'a.VAKA O:]ISSA CYYr1hlV ON]YE04£RRY O]YIAIA9C R.n A h U� 3 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON SCALE: AS NOTED SHEET: 15 OF 16 DATE: 3-15-94 i W sEE xor arSoc- CROSS SECTION USE A COMMON ROW OF STABLES ON AD✓tkN/NC BL is CHANNEL BOTTOM — -- 1 -------------- , 3' TYP. 'h STAPLE ,� �� � w..c cz[v eo 1' TYP. , 3 _ � 1 BUTT BLANKET EDGES TOGETHER SECTION A �(fLiE N.T S. 16 Place blanket on slopes perpendiculor to the direction of Aow. Place blanket on channel bottom parallel to the direction of flow. PLAN ErCL7_9CR BLANKET -- I I nx ci�v Qa =ITI=III=III=III= =III=III=� - --- ---------- ---- - III \\ II SECTION SLOT DITCH DETAIL N.T.S. 16 EXCELSIOR BLANKET DETAILS rC--'� N T.S. 16 0 0 b PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING y DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: o TY OF RENTON SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CI SCALE: AS NOTED SHEET: 16 OF 16 DATE: 3-15-94 i W c Certification of Consistency with the Washington Coastal Zone Management Program RE: Department of the Army Permit Application No. Applicant: Section 307(c) of the Coastal Zone Management Act (CZM) of 1972 as amended by 16 USC 1456(c)(3) requires the applicant for a Federal permit to conduct an activity affecting land or water uses in the Washington coastal zone to provide certification that the activity will comply with the Washington Coastal Zone Management Program. The proposed activity described in your permit application is within the 15 coastal counties in Washington, and the following certification is required before your application can be processed to Public Notice. Upon receipt of the signed, dated certification, the Public Notice will be issued and will include the certification statement. The Public Notice will be forwarded to Washington Department of Ecology for its concurrence or objection. Please note, the Shoreline Permit determination process, State Environmental Policy Act (SEPA) compliance, Water Quality, and Air Quality review must be completed prior to the Department of Ecology's determination of consistency. CERTIFICATION STATEMENT I certify that, to the best of my knowledge and belief, the activity described in the Department of Army Permit Application dated complies with the approved Washington Coastal Zone Management Program (CZM), and will be conducted in a manner consistent with that program. I have started the CZM process by applying for my shoreline permit or letter of exemption from City (city/county) on 1/5/94 (date applied). /, �4i�U�L Ronald J. Straka ���5�2,�- Signatur of Applicant Engineering Supervisor Date Applicant or Agent Print or Type Name and Title - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Please provide the following information about your Shorelines Substantial Development Permit. (If you have not yet applied, please explain in the "Remarks" section of this form. ) Shorelines Permit Date applied 1/5/94 Number assigned LUA-9 -001 SM City/County City of Renton Date approved* Pending Date exempted* *Please provide a copy of the letter announcing the Shorelines decision. Remarks: NPS Form 1145-4 (Replaces NPS Form 383) Jun 88 (Rev) RGBR/220 APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT OMB APPROVAL NO. 0710-0003 (33 CFR 325) Expires 30 September 1992 Public reporting burden for this collection of information is estimated b&.wage 5 hours par response for the majority of cases.inking the time br reviewing instructions, searching existing data sources,gathering and maintaining the data needed.and completing and reviewing the copection of information.Applications for larger or more complex projects.or those in ecoi r afly sensitive areas,could take up b 600 hours.Send corrirments regarding this burden estimate or any other aspect of this coffecbon of information, including suggesbo ns for reducing this burden,to Departrrnnt of Defense,Washington Headquarters Services,Direcbrate for Information Operations and Reports. 1215 Jefleraon Devil Fighway,Suite 1204,Arlington,VA 22202 4302 and b the Office of Management and Budget,Paperwork Reduction Project(0710-0003).Washington,DC 2o5W.Please Do NOT RETURN your completed form to eft her of these addresses.Send your completed form to:Depart menI of Defense,U.S.Army Caps of Engineers.Amin:CECYy-0R,2fl MassAve,N.W_Washington,DC 203 1 4-1 000. The Department of the Army permit program is authorized by Section 10 of the Rivers and Harbors Act of 1899, Section 404 of the Clean Water Act and Section 103 of the Marine, Protection, Research and Sanctuaries Act These laws roquiro permits authorizing activities in or affecting navigable waters of the United States, the discharge of dredged or fill material into waters of the Unitod States,and the transportation of dredged material for the purpose of dumping it into ocean waters. Information provided on this form will be used in evaluating the application for a permit Information in this application Is made a matter of public record through issuance of a public notice. Disclosure of the information requested is voluntary; however, the data requested are necessary in order to communicate with the applicant and to evaluate the permit application. If necessary information is not provided, the permit application cannot be processed nor can a permit be issued One set of original drawings or good reproducible copies which show the location and character of the proposed activity must be attached to this application (see sample drawings and instructions) and be submitted to the District Engineer having jurisdiction over the location of the proposed activity- An appltcabon that is not completed in full will be returned. I APPLICATION NUMBER(To be assigned by Corps) 3 NAME,ADDRESS,AND TITLE OF AUTHORIZED AGENT Telephone no during business hours 2 NAME AND ADDRESS OF APPLICANT Ronald J. Straka, P.E., Engineering Supervisor ace (Residence) (Olhce) City of Renton Surface Water Utility 200 Mill Avenue South, 4th Floor Statement of Authorization I hereby designate and authorize 10 aCi in my Renton, WA 98055 behalf as my agent in the processing of this permit application and to Staff Contact: Scott Woodbury furnish,upon request,supplemental information in support of the applicaton Phone: 206-277-5547 SIGN TUBE OF APPLICANT DATE Fax: 206-235-2541 4 DETAILED DESCRIPTION OF PROPOSED ACTIVITY / 4a ACTIVITY Activities effecting the area within the existing ordinary high water mark of Springbrook Creek include channel construction, stream bank grading, fish and wildlife habitat planting and structure installation, temporary stream bypass and dewatering systems installation and operation during construction, and erosion protection measures implementation. The attached sheets labeled "Block 4 Continued" and "Project Narrative" provide a complete description of these activities and overall project development. 4b PURPOSE The proposed project would provide many benefits including increased flow conveyance capacity and flood storage as well as alleviation of the existing stream bank erosion problem. The project completes the channel improvements for which the existing 1-405 and SW Grady Way box culverts, Oakesdale underpass retaining wall, and SW 16th Street bridge capital improvements were designed and constructed. The project utilizes land area, which by its location and zoning designation is of no commercial use, but will be enhanced to provide a riparian corridor for fish and wildlife habitat. These improvements will also be beneficial to water quality by reducing channel erosion, increasing biofiltration, and reducing exposure to solar induced temperature increases. The proposed pedestrian trail link will provide new educational and recreational opportunities. ac DISCHARGE OF DREDGED OR FILL MATERIAL Quantities_ An estimated 2100 cubic yards of material will be removed from within the area defined by the ordinary high water mark of the existing channel of Springbrook Creek to achieve the design base elevations of the proposed construction. An estimated 1700 cubic yards of select fill material will be subsequently placed in the same area to raise the elevations from base grade to finish grade. The attached sheets labeled "Block 4 Continued" and "Project Narrative" provide a complete. . description of these activities and overall project development. ENG FORM 4345, Jan 91 EMION OF APH OBSOLETE (Proponent CECWON) 5. NAMES AND ADDRESSES OF ADJOINING PROPERTY OWNERS,LESSEES,ETC..WHOSE PROPERTY ALSO ADJOINS THE WATERWAY King County Drainage District No. 1 WA State Dept.of Transportation Group Health Cooperative Jack E.Nelson,Attorney Robert A.Josephson, P.E., Local Coordination Jim Douma, Property Management 601 West Gowe 15700 Dayton Avenue North,MS 122 521 Wall Street Kent,WA 98032 Seattle,WA 98133-9710 Seattle,WA 98121 Phone: 206-854-7200 Phone: 206-440-4000 Phone: 206-448-4699 Puget Western Boeing Company Municipality of Metropolitan Seattle Don Moody,Western Pacific Properties Andrew Clapham,Project Engineer Lynn Wilcox 1400 112th Avenue SE, STE 100 P.O. Box 3707, MS 6W-90 821 Second Avenue Bellevue,WA 98004 Seattle,WA 98124-2207 Seattle, WA 98104 Phone: 206-451-4811 Phone: 206-393-7072 Phone: 206-684-1284 6 WATERBODY AND LOCATK)N ON WATERBODY WHERE ACTIVITY EXISTS OR IS PROPOSED The project is linear in shape and is adjacent to, and includes portions of, a reach of Springbrook Creek (river mile 0.5 to 0.7) that flows to the north into the Green River. The project area is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs east-west through the project area approximately 400 feet north of SW 16th Street. The entire project is in the SE 1/4 and NE 1/4 of Section 24. Township 23 North, Range 4 East, W.M., in King County, Washington. 7 LOCATION ON LAND WHERE ACTIVITY EXISTS OR IS PROPOSED ADDRESS The project area is within the City of Renton and is slightly north and east of the former Longacres racetrack and slightly southeast of the METRO Wastewater Treatment Plant. The entire project is in the SE 1/4 and NE 1/4 of Section 24, Township 23 North, Range 4 East,W.M., in King County, Washington. King WA 98055 COUNTY STATE ZIP CODE City of Renton LOCAL GOVERNING BODY WITH JURISDICTION OVERSITE 8. Is any portion of the activity for which authorization is sought now complete? ❑ YES NO If answer is -yes'give reasons,month and year the activity was completed Indicate the existing work on the drawings 9. List all approvats or certifications and denials roceived from other federal,interstate,state or local agencies for any structures,construction,discharges or other activities described in this application_ ISSUING AGENCY TYPE APPROVAL IDENTIFICATION NO. DATE OF APPLICATION DATE OF APPROVAL DATE OF DENIAL City of Renton SEPA DNS = Mitigated LUA-94-001 ECF 115/94 3/14/94 City of Renton Conditional Use LUA-94-001 CU 1/5/94 City of Renton Fill and Grade LUA-94-001 SP 1/5/94 City of Renton Variance LUA-94-001 V 1/5/94 City of Renton Site Plan Approval LUA-94-001 SA 1/5/94 City of Renton Shoreline Development LUA-94-001 SM 1/5/94 Dept.of Ecology Water Quality Certification 3115/94 Dept.of Ecology Water Quality Modification 3/15/94 Dept.of Fisheries HPA 3115/94 10. Application is hereby made for a permit or permits to authorize the activities described herein. I certify that I am familiar with the mlormation contained in the application,and that to the best of my knowledge and belief such information is true,complete,and accurate I further certify that I possess the authority to undertake the proposed activities or I am acting as the duly authorized agent of the applicant. i SIGNATURE OFrAP DAitE SIGNATURE OF AGENT DATE The application must be signed by the person who desires to undertake the proposed activity(applicant)or it may be signed by a duly authorized agent if the statement in block 3 has been filled out and signed. 18 U.S.C. Section 1001 provides that Whoever,in any manner within the jurisdiction of any department or agency of The United States krlowingty and willfully 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 knomng same to contain any false fictitious or fraudulent statement or entry, shall be fined not more than$10,000 or impristxled not more than five years, or both. (Reverse of ENG FOR14 4345) BLOCK 4 CONTINUED 4a. Activity The City of Renton proposes to perform the following activities: 1 . Remove soil blocking the existing box culvert under Interstate 405 (1-405) for the purpose of creating a new inlet and outlet channel for the culvert that will allow flows in Springbrook Creek to pass through. 2. Widen a portion of the existing Springbrook Creek channel between SW Grady Way to SW 16th Street leading to and from the 1-405 box culvert. The existing Springbrook Creek channel parallel to the proposed 1-405 inlet and outlet channel will be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. 3. Regrade and stabilize a segment of nearly vertical, eroded stream bank on the west side of the existing channel immediately north of 1-405. 4. Install a new pedestrian trail culvert crossing over the south 1-405 roadside ditch that is located on the west side of the existing Springbrook Creek channel. The pedestrian trail will provide a link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north of SW Grady Way and south of SW 16th Street. The maximum depth of fill needed for the pedestrian trail culvert crossing of the 1-405 south roadside ditch is approximately 10 feet. 5. Install five fish habitat structures within the low flow channel to provide resting areas and increased habitat diversity. Two of the structures will be placed within the existing ordinary high water mark of the Springbrook Creek channel. The proposed structures consist of instream boulder groups as well as tree trunk segments anchored into the stream bank and projected out into the channel. 6. Plant dwarf willows along the edge of the low flow channel to provide shade from solar exposure. The willows also protect against erosive flows while presenting minimal restriction of the channel flood conveyance capacity. 7. Plant shrubs to create two wildlife habitat areas adjacent to the channel. The plantings will increase the quality and diversity of habitat above that currently existing in the channel area. 8. Install stream bypass and dewatering systems to maintain construction areas sufficiently dry to complete the proposed work. The proposed channel construction south of the 1-405 box culvert consists of 215-feet of new channel and 200-feet of widened channel construction. The 215-foot new channel segment extends south from the southern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 200-feet of widened channel consists of a 160-foot, fully widened, segment that extends south from the new channel to the south end of the SW 16th Street bridge, and a 40-foot transition segment to blend the fully widened segment to the existing channel south of SW 16th Street. Block 4 Continued Page 2 The proposed channel construction north of the 1-405 box culvert includes 50-feet of new channel, 120-feet of fully widened channel, and 90-feet of stream bank regrading and stabilization. The 50-foot new channel segment extends north from the northern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 120-foot, fully widened, segment of the existing channel extends downstream, north of the new channel, to connect to the southern entrance of the SW Grady Way box culvert. The 90-foot length of stream bank to be stabilized is located on the west side of the existing channel, beginning immediately north of 1-405 and extending north to blend with the new west bank of the proposed widened channel section. To maintain fish passage, a low flow channel with 12-foot bottom width and 3 horizontal to 1 vertical side slopes is included in the design of the new and widened channels. The proposed low flow channel connects to one of the five bays of the I- 405 and SW Grady Way box culverts which have a lower bottom elevation than the other bays. The channel design slope is very gradual at 0.02%, and the bottom elevation varies from 0.09-feet at SW Grady Way to 0.24-feet at SW 16th Street. The existing channel bottom elevation varies from 0 to 2 feet from SW Grady Way to SW 16th Street (1929 NGVD datum). The depth of the low flow channel is 2.5-feet and the overall top width is 27-feet. The maximum depth of excavation from existing to finish grade is approximately 16-feet. The proposed main channel, including the low flow channel, averages 65-feet in width. The design slope of the main channel is very gradual at 0.02%, and the bottom elevation varies from 2.59-feet at SW Grady Way to 2.74-feet at SW 16th Street (1929 NGVD datum). The design channel side slopes vary between 2 or 3 horizontal to 1 vertical. Three concrete wing walls totaling 100-feet in length and one rock-filled gabion wing wall 80-feet in length will be installed at the entrances and exits to the SW 16th Street bridge, 1-405 box culvert, and SW Grady Way box culvert. However, these structures are located out of the existing ordinary high water mark of Springbrook Creek. To construct the proposed channels next to the Oakesdale Avenue SW underpass, it is necessary to over excavate a portion of the proposed channel 5-feet below finish grade to allow installation of a watertight polyvinyl chloride membrane. The membrane will protect the adjacent Oakesdale Avenue SW underpass, which is lower in elevation than the proposed channel bottom, from the short-circuiting or piping of water from the proposed channel through the soil and into the underdrain system of the underpass. The membrane will be connected to the Oakesdale Avenue SW underpass retaining wall and extend west across the width of the channel. This increases the flow path that water from the channel must travel to reach the underdrain system and reduces the potential for removal of finer particles from supporting soils due to piping and reduces the risk of overburdening of the underdrain pump system. Construction is planned for the summer of 1994. Any work within the channel of Springbrook Creek is proposed to be completed during the summer construction window of June 15 - September 15 as approved and in accordance with permit conditions to be established by the Washington State Department of Fish and Wildlife. Because of uncertainties regarding weather and on-site conditions, extension of the fisheries window up to October 15, 1994 may be necessary to complete construction. Any extension request will be coordinated with the Department of Fish and Wildlife. Block 4 Continued Page 3 4c. Discharge of dredged or fill material Materials. The fill material to be placed to achieve proposed channel subgrade elevations will be well graded sand to silty sand. To reach finish grade on a portion of the channel, including the low flow channel, a total of 1/2-foot of sandy filter material and 1-foot of clean, loose rip rap will be placed on the subgrade. Other areas of the channel not receiving rip rap that are subject to potential erosive flows will be brought to finish grade with fill material and overlain with an excelsior blanket. This will protect the exposed soil and allow vegetation to become established to further protect against erosion. Mode of Transportation. Fill material will arrive to the site via 1-405, SW Grady Way, Oakesdale Avenue SW, and SW 16th Street. Excavated material will be removed from the channel and disposed of on an approved upland disposal site. H:DOCS:94-226:SSW:ps STATg Off, O� y x W� o$ Oy STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washington 98008-5452 • (206) 649-7000 October 3, 1995 CERTIFIED MAIL Fr ; ; Z 397 774 619 ��'� OCT 41995 Mr. Scott Woodbury 0� �Y C F F-�E��TO N City of Renton Engineering Planning/Bldg/Public Works Dept. Eng g Dept, 200 Mill Avenue S Renton, WA 98055 Dear Mr. Woodbury: Enclosed is Order No. DE 94WQ-N251. All correspondence relating to this document should be directed to the Enforcement Coordinator, Department of Ecology, Northwest Regional Office, 3190 - 160th Avenue, Bellevue, WA 98008-5452. If you have any questions concerning the content of the document, please call Mary Kautz, telephone (206) 649-7036. The enclosed Order may be appealed. The appeal procedures are described in the Order. Sincerely, Carla J. Skog"� Enforcement Coordinator Water Quality Section CJS:Ip Enclosure cc: Central Programs Enforcement Unit Public Information Office i�J DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton ) ORDER for Temporary Modification of ) No. DE 94WQ-N251 Water Quality Standards ) (Third Amendment) (Springbrook Creek) ) To: City of Renton Planning/Building/Public Works Department 200 Mill Avenue South Renton, WA 98055 Attention: Mr. Scott Woodbury,P.E., Project Manager Order No. 94WQ-N251 (Third Amendment) dated September 5, 1995 is hereby amended as follows: The water quality modification is extended to October 19, 1995. Any work done after this period will require an amendment to this Order. No other condition or requirement of the above-mentioned Order is affected by this amendment. The department retains continuing jurisdiction to make modifications hereto through supplemental Order, if it appears necessary to further protect the public interest during the modification period. Failure to comply with this Order may result in the issuance of civil penalties or other actions, whether administrative or judicial, to enforce the terms of this Order. This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board, P.O. Box 40903, Olympia, WA 98504-40903 within thirty (30) days of your receipt of this Order. At the same time, your appeal must also be sent to the Department of Ecology, c/o Enforcement Officer, P.O. Box 47600, Olympia, WA 98504-7600 and the Northwest Regional Office, 3190 - 164th Avenue SE, Bellevue, WA 985452. Stay requests must be submitted in accordance with RCW 43.21B.320. These procedures are consistent with Chapter 43.21B RCW. DATED Octoher 3, 1995 at Bellevue, Washington. J hn H. Gly n ater Quality Supervisor Northwest Regional Office STATg O� O y a ' x Oy 1889 STATE OF WASHINGTON DEPARTMENT OF ECO,LO ' ' Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washil7gton 98068-5452_ • (206) 649-7000 CERTIFIED MAIL Z 143 211 397 Mr. Scott Woodbury, P.E., Project Manager City of Renton Planning/Building/Public Works Department 200 Mill Avenue South Renton, WA 98055 Dear Mr. Woodbury: Enclosed is Order No. DE 94WQ-N251 (Second Amendment). All correspondence relating to this document should be directed to the Enforcement Coordinator, Department of Ecology, Northwest Regional Office, 3190 - 160th Avenue, Bellevue, WA 98008-5452. If you have any questions concerning the content of the document, please call Mary Kautz at (206) 649-7036. The enclosed Order may be appealed. The appeal procedures are described in the Order. Sincerely, 6", D < v l Carla J. Skog Enforcement Coordinator Water Quality Section CJS:jo Enclosure cc: Central Programs Enforcement Unit Public Information Officer DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton ) ORDER for Temporary Modification of ) No. DE 94WQ-N251 Water Quality Standards ) (Second Amendment) (Springbrook Creek) ) To: Mr. Scott Woodbury, P.E., Project Manager City of Renton Planning/Building/Public Works Department 200 Mill Avenue South Renton, WA 98055 Order No. DE 94WQ-N251 dated September 12, 1994 is hereby amended as follows: The short-term modification of the Water Quality Standards time limitation period is extended to October 1, 1995. No other condition or requirement of the above-mentioned Order is affected by this amendment. The department retains continuing jurisdiction to make modifications hereto through supplemental Order, if it appears necessary to further protect the public interest during the modification period. Failure to comply with this Order may result in the issuance of civil penalties or other actions, whether administrative or judicial, to enforce the terms of this Order. This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board, P.O. Box 40903, Olympia, WA 98504-40903 within thirty (30) days of your receipt of this Order. At the same time, your appeal must also be sent to the Department of Ecology, c/o Enforcement Officer, P.O. Box 47600, Olympia, WA 98504-7600 and the Northwest Regional Office, 3190 - 160th Avenue SE, Bellevue, WA 985452. Stay requests must be submitted in accordance with RCW 43.21B.320. These procedures are consistent with Chapter 43.21B RCW. r: `. � DATED SE��P � �' "�� � at Bellevue, Washington ohn H. Glyn Water Quality Supervisor Northwest Regional Office CITY OF RENTON .� Planning/Building/Public Works Department Earl Clymer,Mayor Gregg Zimmerman P.E.,Administrator ,CA August 31 , 1995 Mary Kautz Washington State Department of Ecology Northwest Regional Office 3190 - 160th Avenue SE Bellevue, WA 98008-5452 SUBJECT: WATER QUALITY MODIFICATION ORDER NO. DE 94WQ-N251 P-1 CHANNEL PROJECT -SW GRADY WAY TO SW 16TH STREET REQUEST FOR TIME EXTENSION Dear Ms Kautz: As I discussed with you in our recent telephone conversation, please extend the water quality modification for the above-referenced project from the current expiration date of September 15, 1995, to a revised expiration date of October 1, 1995. This is consistent with the extension of the Hydraulic Project Approval permit recently issued for the project from the Washington State Departments of Fish and Wildlife. A copy of this permit extension is attached. Your assistance in extending the water quality modification is appreciated. Please fax a copy of the modification extension to (206) 235-2541 as soon as possible, as I need to forward the extension to the Olympia Ecology office to also obtain an extension of the project's water quality certification. If you have any questions, please call me at (206) 277-5547. Sincerely, Scott Woodbury, P.E., loject Manager Surface Water Utility H:D0CS:95-737:SW:Ps Attachments CC: Rod DenHerder Ron Straka 200 Mill Avenue South - Renton, Washington 98055 MThis naner contains 50%recvcled material.25%post consumer q AUG 29 '95 01:34PM DEPT FISHERIES P 2 HYDRAULIC PROJECT APPROVAL R.C.W. 7 5 . 2 O . 10 0 DEPARTMENT OF FISHERIES - General Administration Bldg. R.C.W. 75 .2 0 . 103 Olympia, Washington 98504 August 29, 1995 _ (206) 753-6650 DEPARTMENT OF. FISHERIES (applicant should refer to this datc in all correspondence) PAGE 1 OF 2 PAGES fO LAST NAME FIRST 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton 0 (206) 277-SS47 00-95498-04 19 STREET OR RURAL ROUTE D © u WRIA 200 Mill Ave . S, 4th Floor, ATM S . Woodbury 09 . 0005 CITY SATE 98055ZIP Renton TYPE 0 12 ATER TRIBUTARY TO 11 PRQJECT Springbrook Creek Green River Channe� Change_ 13 UARTER SECTION TOWNSHIP RANGE(E-W) COUNTY sEcrloN_ NE __ 24 __ 23N____04E King TIME LIMITATIONS t 5❑THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY Immediately October 1, 1995 THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES-AND-ITS PROVISIONS FOLLOWED OWED IiY THE PFRNITTEE AND OPERATOR PERFORMING THE WOkK. SEP I){pORTANI GENERAL PROV1S10N4 ON -VERSE SIDE OF APPROVE NOTE: This Hydraulic Protect Approval (HPA) is a renewal of the onginal HPA issued on April 24 , 1994 , last modified on June 12 , 1995 . This HPA is in response to a vebal request by Scott . Woodbury, of City of Renton Public Works on August 28, 1995, and it supersedes all previous HPAS 'and modifications for this project . This HPA is written to reconstruct and divert 215-feet o channel to an existing I-405 Culvert . It also includes 50-feet of new channel north of I-405 box culverts , channel widening, bank protection, habitat structures, and revegetation. 1 . A temporary bypass or flume shall be in place prior to commencement of work. 2 . the inlet toor similar culvertaoreflume . 3 . A Sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area . 4 . The culvert or flume shall be of sufficient size to pass flows and debris occurring during the project . 5 . Prior to releasing the water flow to the project area, all work within the new channel shall be completed. 6 . Water that has seeped into the work site shall be pumped to an area SEPA: MDNS, City of Renton, March 1994 REGIONAL HABITAT MANAGER - Phil Schneider (206) 775-1311, Ext . 107 PATROL - Suda 121 [P2] APPLICANT - WILDLIFE - READER • PATROL - HAS. MGR. - VRIA DEPARTMENT OF FISHERIES S_ � DIRECTOR AUG 29 '95 01:34PM DEPT FISHERIES P-S HYDRAULIC PROJECT APPROVAL R.C.W. 75 . 2 0 . 10 0 DEPARTMENT OF FISHERIES 1 General Administration Bldg. R.C.W. 75 .20 . 03 Olympia, Washington 98504 August 29 , 1995 (206) 753-6650 oEaaRTlfENT of FISHERIES (applicant should refer to this date in all correspondence) PAGER OF 2 PAGES 10 LAST NAME 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 00-95498-04 12 WATERSpringbrook Creek q uRIA 09 . coos to allow settlin . of fines before entering the stream, or otherwise contained so as gto prevent any siltation from entering the stream. 7 . If pum, s are used to bypass the stream around the work area, the inlet hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. 8 . Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Bank protection material shall be, angular rock or other material of b a sufficient size to prevent its eing washed away by water action. 10 . Overburden material resulting from this project shall be deposited so as not to reenter the water. 11. . Work shall stop if distressed or dead fish are observed in the bypass reach. The Washin ton Department of Fish and Wildlife (WDFW) shall be notified immediately. 12 . Prior to starting work the contractor shall submit the erosion control plan to WDFW, that includes the plan to bypass the work area during all phases of the project . 13 . At least one (1) week prior to starting this ppreject contact Philip Schneider, Area Habitrat Biologist, at (206) 775-1311, extension 107 . 14 . Work shall conform to plans and specifications submitted with the Hydraulic Project application including the revised planting plan that replaces sheet 7 of 16 of the original plans . is . At no time shall there be a complete blockage of flow and the new channel shall filled in a manner that will minimize the flow impacts downstream. 16 . The bridge shall be placed and removed by equipment operating from the banks'. 17 . Curbs or wheel guards shall be located in a manner that will control dirt, debris, etc . , from wasting into the water. 18 . Approach material shall be structurally stable and be composed of material that, if eroded into the water, will not be detrimental to fish life . LOCATION: I-405 and Oaksdale Ave . SW in Renton. Attachment : REV 10/16/88 AUG 29 '95 01:35PM DEPT FISHERIES P•4 �► Attachment (00-95498-04) THIS HYDRAULIC PROJECT APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. THE PERSON(S) TO WHOM THIS HYDRAULIC PROJECT APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE AND/OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 . 20 . 100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS OR REVOCATION IF THE DEPARTMENT OF FISHERIES OR WILDLIFE DETERMXNE THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34 . 04 RCW TO APPEAL SUCH DECISIONS . ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 - 20 . 103 MAY BE MODIFIED BY THE DEPARTMENT OF FISHERIES OR WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE : PROVIDED HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75 . 20 . 130 . THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES CODE (RCW 75 . 20) . ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN EPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-110-34C) CONSISTS OF CONTACTING THE REGIONAL HABITAT MANAGER AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL, BUT IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE CHIEF OF THE HABITAT MANAGEMENT DIVISION IN OLYMPIA. THE HABITAT MANAGEMENT DIVISION CHIEF'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOUR ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAL APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER EPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSION, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPROVAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350) 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN EPA ASSOCIATED WITH IRRIGATION OR STOCK- WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE HYDRAULIC APPEALS BOARD PER WAC 259-04 • THE MAILING ADDRESS OF THE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO - ROWE SIX, LACEY, WASHINGTON 98504; TELEPHONE 206/459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEALING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. ,� CITY OF RENTON "LL Planning/Building/Public Works Department o Earl Clymer,Mayor Gregg Zimmerman P.E.,Administrator May 4, 1995 Mary Kautz Northwest Regional Office Wash State Dept of Ecology 3190 - 160th Avenue SE Bellevue WA 98008-5452 SUBJECT: P-1 CHANNEL PROJECT - SW 16TH STREET TO SW GRADY WAY ORDER DE 94WQ-N251 Dear Ms. Kautz: Attached for review are copies of the following documents submitted for the above-referenced project by Golf Landscaping & Construction. • Dewatering Plan dated May 1, 1995 (4 pages); • Stream Bypass Plan (4 pages, no date); • Erosion Control Plan (1 page, no date); • Phone List (1 page, no date). Please provide an emergency contact number and return. The contractor is hoping to start work this month and continue into September 1995. Work within the stream channel may only occur from June 15, 1995 to September 15, 1995 in accordance with the permit conditions of the Washington State Department of Fish and Wildlife. Please call me at 206-277-5547 to let me know when you will be able to return comments. Because of the limited construction season for work within the stream, your assistance in providing comments as soon as possible is appreciated. Sincerely, Scott Woodbury, P.E., Pr ect Manager Surface Water Utility H:DOCS:95-392D!:S W cc: Rod DenHerder enclosures 200 Mill Avenue South - Renton,Washington 98055 r STATE OF O 9 y x �ti�yeas�o STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office,3190- 160th Ave.S.F. • Bellevue, Washington 98008-5452 • (206)649-7000 SEP12 % CERTIFIED MAIL P 311 404 683 City of Renton Surface Water Utilities SEP 131994 Planning/Building/Public Works Department 200 Mill Avenue South CITY OF PENTQN Renton, WA 98055 Engineering Dept. Gentlemen: Enclosed is Order No. DE 94WQ-N251 (First Amemdment). All correspondence relating to this document should be directed to the Enforcement Coordinator, Department of Ecology, Northwest Regional Office, 3190 - 160th Avenue, Bellevue, WA 98008-5452. If you have any questions concerning the content of the document, please call Mary Kautz, telephone 649-7036. The enclosed Order may be appealed. The appeal procedures are described in the Order. Sincerely, 0�'ku J Carla J. Skog Enforcement Coordinator Water Quality Section CJS:jo Enclosure cc: Central Programs Enforcement Unit Public Information Office 18 DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton, Surface Water Utility ) ORDER for Temporary Modification of ) No. DE 94WQ-N251 Water Quality Standards ) (First Amendment) (Springbrook Creek) ) To: City of Renton Surface Water Utilities SEP 13 ,994 Planning/Building/Public Works Department 1g9� 200 Mill Avenue South CITY CF Renton, WA 98055 Engineering Dept, Order No. DE 94WQ-N251 dated May 24 1994 is hereby amended as follows: Under General Condition 2, the water quality modification period shall be between June 15, 1995 to September 15, 1995. Any work taking place outside this period will require an Order amendment from Ecology. No other condition or requirement of the above-mentioned Orders are affected by this amendment. The department retains continuing jurisdiction to make modifications hereto through supplemental Order, if it appears necessary to further protect the public interest during the modification period. This Order may be appealed. Your appeal must be filed within 30 days of receipt of this Order to the Washington Pollution Control Hearings Board, P.O. Box 40903, Olympia, Washington 98504-8921. Concurrently, a copy of the application must be sent to the Department of Ecology, P.O. Box 47600, Olympia, Washington 98504-7600 and the Northwest Regional Office, 3190 160th Avenue S.E., Bellevue, Washington 98008-5452. These procedures are consistent with the provisions of Chapter 43.21B RCW and the rules and regulations adopted thereunder. DATED 5 E P 1 2 , Bellevue, Washington J n H. Glyn ater Quality Supervisor Northwest Regional Office Department of Ecology MOW FAX TRANSWWA& ..r TO •. ���STATg ... .._ o COMPANY $ PHONE Y v STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office,3190- 160th Ave.S.E. • Bellevue, Washington 98008-5452 • (206)649-7000 MAY 2 4 1994 CERTIFIED MAIL P 311 404 088 City of Renton MAY 2 51994 Surface Water Utility Planning/Building/Public Works Department CITY OF RENTON 200 Mill Avenue South Engineering Dept. Renton, WA 98055 Gentlemen: Enclosed is Order No. DE 94WQ-N251. All correspondence relating to this document should be directed to the Enforcement Coordinator, Department of Ecology, Northwest Regional Office, 3190 - 160th Avenue, Bellevue, WA 98008-5452. If you have any questions concerning the content of the document, please call Mary Kautz, telephone 649- 7036. The enclosed Order may be appealed. The appeal procedures are described in the Order. Sincerely, Carla J. Skog Enforcement Coordinator Water Quality Section CJS:jo Enclosure cc: Central Programs Enforcement Unit Public Information Office 18 DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton ) ORDER for Temporary Modification of ) No. DE 94WQ-N251 Water Quality Standards ) (Springbrook Creek) ) To: City of Renton Surface Water Utility Planning/Building/Public Works Department 200 Mill Avenue South Renton, WA 98055 The City of Renton Surface Water Utility submitted an application for a Short-Term Modification of the Water Quality Standards for the waters of Springbrook Creek, King County. The purpose of the project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel constructed north of SW 16th Street which began in 1984 with the assistance of the U.S. Department Agriculture Soil Conservation Service. The channel improvements will include removal of fill that is blocking the I-405 box culvert, stabilization of the streambank to control erosion and sedimentation, rip rap, construction of a pedestrian trail and riparian plantings and placement of in-stream rock and root wads for fish habitat enhancement. In view of the foregoing and in accordance with RCW 90.48.120(2): IT IS ORDERED that the water quality criteria specified in WAC 173-201A-030(2)(c)(vi) shall be modified between June 15, 1994 and September 15, 1994. This water quality modification is subject to the attached conditions. The department retains continuing jurisdiction to make modifications hereto through supplemental order, if it appears necessary to further protect the public interest during the modification period. Failure to comply with this Order may result in the issuance of civil penalties or other actions, whether administrative or judicial, to enforce the terms of this Order. This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board, P.O. Box 40903, Olympia, WA 98504-40903 within thirty (30) days of your receipt of this Order. At the same time, your appeal must also be sent to the Department of Ecology, c/o Enforcement Officer, P.O. Box 47600, Olympia, WA 98504-7600 and the Northwest Regional Office, 3190 160th Avenue SE, Bellevue, WA 985452. Stay requests must be submitted in accordance with RCW 43.21B.320. These procedures are consistent with Chapter 43.21B RCW. MAY [ 4 M4 DATED at Bellevue, Washington -*- �Z hn H. GlynrU Water Quality Supervisor Northwest Regional Office Order No. DE 94WQ-N251 Temporary Water Quality Modification City of Renton Surface Water Utility I-405 Box Culvert/P-1 Channel Improvement Project Springbrook Creek (Rivermile 0.5 - 0.7) Location: SW 16 Street on the south, SW Grady Way on the north and the I-405 Oakesdale Avenue SW underpass on the east, SE /14 and NE 1/4 of Section 24, Township 23 North, Range 4 East, W.M., in King County, Washington. CONDITIONS GENERAL 1. The water quality standards affecting Springbrook Creek, (Class A) shall apply except where modified for turbidity, from River Mile 0.5 downstream a distance of 200 feet. 2. The Water Quality Standards for turbidity are modified for the period between June 15, 1994 and September 15, 1994. Any work taking place outside of the time period will require an Order amendment from Ecology after obtaining an extension from the Department of Fish and Wildlife. 3. The project activities must comply with all conditions contained in the Washington State Department of Fish and Wildlife Hydraulic Project Approval, Control No. 01- 95498-01. 4. This approval does not relieve the applicant from the responsibility of meeting applicable regulations of other agencies. 5. Ecology retains continuing jurisdiction to make modification(s) through supplemental Order, if it appears necessary to protect the public interest during the modification period. 6. Copies of this Order shall be kept on the job site and readily available for reference by the City of Renton personnel, the construction superintendent, construction managers and foremen, and state and local government inspectors. CONSTRUCTION ACTIVITIES The construction contractor shall use all reasonable measures to minimize the impacts of construction activity on waters of the state. Water quality constituents of particular concern are turbidity, suspended sediment, settleable solids, pH and oil and grease. Required mitigation measures include, but are not limited to, the following: 1 Conditions - Order No. DE 94WQ-N251 1. The contractor shall follow and implement all specifications for erosion and sediment control specified in the contract documents. Adjustments to planned erosion and sediment control may be necessary to successfully control off site movement of material not covered under this modification. 2. All construction debris shall be properly disposed of on land in such a manner that it cannot enter into the waterway or cause water quality degradation to state waters. 3. Dewatering water that is not turbid may be discharged directly to the stream channel. The discharge outfall shall be designed and operated so as to not cause erosion or scour in the stream channel. 4. Turbid water generated from construction activities, including turbid dewatering water, shall not be discharged directly into Springbrook Creek and its tributaries. Temporary sediment traps (or biofiltration swales) shall be used to allow the turbid water to settle for a minimum of two hours before discharge. 5. Proper erosion and sediment control practices shall be used on the construction right- of-way and adjacent areas to prevent upland sediments from entering the stream channel. 6. All areas disturbed or newly created by the project construction will be seeded, riprapped with clean, durable riprap, or given some other equivalent type of protection against erosion. 7. Approach material shall be of clean composition and placed in a manner to prevent erosion, and siltation that might result from high water and/or heavy rains. 8. All planned sediment and erosion control measures shall be adjusted to meet field conditions at the time of construction. Periodic inspection and maintenance shall be conducted at the end of each working day and after any significant rainfall to insure sediment control measures are in working condition. Any damaged devices shall be repaired immediately. 9. Riprap shall be clean and durable, free from dirt, sand, clay, and rock fines. 10. Work in or near the waterway shall be done so as to minimize turbidity, erosion, other water quality impacts and stream bed deformation. 11. Properly dispose of all construction debris on land in such a manner that it cannot enter into the waterway or cause water quality degradation to state waters. 2 Conditions - Order No. DE 94WQ-N251 12. Excess excavated material shall be transported and disposed of in a manner that prevents the spoils from entering state waters and prevents leachates or drainage from the spoils from degrading water quality. Excavated material shall not be stockpiled on a temporary or permanent basis below the high water line. 13. When working in water, all digging passes shall be completed without any material, once in the bucket, being returned to the waterway. 14. Extreme care shall be taken to prevent any petroleum products fresh cement, lime, or concrete, chemicals, or other toxic or deleterious materials from entering the water in any manner. WATER QUALITY 1. Turbidity levels in the receiving stream at all points outside the specified area shall comply with WAC 173-201A, Water Quality Standards. 2. There shall be no visible sheen from petroleum products in the water at any time during the project. MONITORING 1. Ecology may require sampling and analysis at any time for other constituents during the project. POLLUTION CONTROL INSPECTIONS 1. A Pollution Control Inspector shall be made available to supervise implementation of the Erosion and Sediment Control Plan. 2. The Pollution Control Inspector shall be on site or on call, and be readily accessible to the site at all times while construction activities are occurring that may affect the quality of ground and surface waters of the state, including all periods of construction activities. 3. The Pollution Control Inspector shall have adequate authority to ensure proper implementation of the Erosion and Sediment Control Plan, as well as immediate corrective actions necessary because of changing field conditions. SPILLS 1. RCW 90.56 prohibits any discharge of oil, fuel or chemicals into state waters, or onto land with a potential for entry into state waters. 3 Conditions - Order No. DE 94WQ-N251 2. All oil, fuel or chemical storage tanks shall be diked and located on impervious surfaces so as to prevent spills from escaping to surface waters or ground waters of the state. 3. Fuel hoses, oil drums, oil or fuel transfer valves and fittings, etc., shall be checked regularly for drips or leaks, and shall be maintained and stored properly to prevent spills into state waters. Proper security shall be maintained to prevent vandalism. 4. In the event of a discharge of oil, fuel or chemicals into state waters, or onto land with a potential for entry into state waters, containment and clean-up efforts shall begin immediately and be completed as soon as possible, taking precedence over normal work. Clean-up shall include proper disposal of any spilled material and used clean-up materials. 5. Spills into state waters, spills onto land with a potential or entry into state waters, or other significant water quality impacts, shall be reported immediately to the Department of Ecology Northwest Regional Office at (206) 649-7000 (24-hour telephone number). 6. No emulsifiers or dispersants are to be used in waters of the state without approval from the Department of Ecology Northwest Regional Office. NOTIFICATION 1. Water Quality Inspector for Ecology (Mary Kautz), must be notified at (206) 649- 7036, at least 24 hours prior to commencement of this work and at completion of the project. 2. If distressed or dead fish are noticed in the vicinity , the proponent shall immediately notify the Department of Ecology, Northwest Regional Office at (206) 649-7000, and take immediate action to identify and eliminate toxic sources causing the problem. 4 P 077 223 179 Recut fir Certified Mail No Insurance Coverage Provided —.EoS..,Es Do not use for International Mail (See Reverse) 46bert Newman Dept-of Ecology eSE �e revue iA 98008-5452 Postage Certified Fee Special Delivery Fee Restricted Delivery Fee Return Receipt Showing to Whom&Date Delivered ry Return Receipt Showing to Whom, e Date,and Addressee's Address 0 I TOTAL Postage C &Fees 0 Postmark or Date 'v' 3-16-94 0 I-405 Box Culvert/PI �, Channel Imp. STICK POSTAGE STAMPS TO ARTICLE TO COVER FIRST CLASS POSTAGE, CERTIFIED MAIL FEE,AND CHARGES FOR ANY SELECTED OPTIONAL SERVICES Isee front). n, 1. if you want this receipt postmarked,stick the gummed stub to the right of the return address leaving the receipt attached and present the article at a post office service window or hand it to your rural carrier (no extra charge). Q) 2. If you do not want this receipt postmarked,stick the gummed stub to the right of the return address of the article, date, detach and retain the receipt, and mail the article. '1t 3. If you want a return receipt,write the certified mail number and your name and address on a 1 c return receipt card,Farm 3911,and attach it to the front of the article by means of the gummed ends if space permits.Otherwise,affix to back of article.Endorse front of article RETURN RECEIPT REQUESTED adjacent to the number. O 00 4. If you want delivery restricted to the addressee, or to an authorized agent of the addressee, fM endorse RESTRICTED DELIVERY on the front of tha article. E o` 5. Enter fees for the services requested in the appropriate spaces on the front of this receipt. If LL return receipt is requested,check the applicable blocks in item 1 of Form 3811. U) a. 5. Save this receipt and present it if you make inquiry. U.S.GPO 1991-302-916 CITY OF RENTON Planning/Building/Public Works Department Earl Clymer, Mayor March 15, 1994 Robert Newman, Water Quality Program Department of Ecology Northwest Regional Office 3190 160th Avenue SE Bellevue, WA 98008-5452 SUBJECT: 1-405 BOX CULVERT/P-1 CHANNEL IMPROVEMENT SPRINGBROOK CREEK RIVER MILE 0.5 - 0.7 SHORT TERM MODIFICATION OF WATER QUALITY APPLICATION Dear Mr. Newman: Enclosed for your Department's review is the Short Term Modification Of Water Quality permit application for the above-referenced project. The proposed project is the final segment of a series of flood control improvements to the Springbrook Creek/P-1 Channel constructed north of SW 16th Street from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). The enclosed information includes: • Short Term Modification Of Water Quality form • Project Narrative • Vicinity Map and Drawings of the Proposed Work • City of Renton Final SEPA Determination The proposed project would provide many benefits including increased flow conveyance capacity and flood storage as well as alleviation of the existing stream bank erosion problem. The project completes the channel improvements for which the existing 1-405 and SW Grady Way box culverts, Oakesdale underpass retaining wall, and SW 16th Street bridge capital improvements were designed and constructed. The project utilizes land area, which by its location and zoning designation is of no commercial use, but will be enhanced to provide a riparian corridor for fish and wildlife habitat. These improvements will also be beneficial to water quality by reducing channel erosion, increasing biofiltration, and reducing exposure to solar induced temperature increases. The pedestrian trail link included in the project will provide new educational and recreational opportunities. 200 Mill Avenue South - Renton, Washington 98055 THIS PAPER CONTAINS 50%RECYCLED MATERIAL.10 o POSTCONSUMER Dep;rtmeni of Ecology 1-405 Box Culvert/P-1 Channel Improvement Page 2 Construction is planned for the summer of 1994. Any work within the channel of Springbrook Creek is proposed to be completed during the summer construction window of June 15 - September 15 as approved and in accordance with permit conditions to be established by the Department of Fish and Wildlife (DOF-W) through the Hydraulic Project Approval (HPA) process. Depending upon the timing for issuance of the Corps of Engineers Section 404 individual permit and uncertainties regarding weather and on-site conditions, it may be necessary to coordinate with the DOF-W an extension of the construction window beyond September 15, 1994, as conditions permit. Review of the project HPA application is being conducted concurrently with your department's review. A copy of the HPA permit will be submitted to you as soon as it becomes available. If you have any questions, or need more information, please call Scott Woodbury, City of Renton Project Manager, at 206-277-5547. Sincerely, Aa _C44 Ronald J. Straka, P.E., Engineering Supervisor Surface Water Utility H:DOCS:94-225:SSW:ps CC: Scott Woodbury Enclosures �r SHORT TERM MODIFICATION OF WATER QUALITY APPLICATION STATE OF WASMNGTON WAC 17 3-2 01A-110 (1) DEPARTMENT OF ECOLOGY Complete all of the items in this application and send to: Water Quality Program Department of Ecology Northwest Regional Office 3190 160th Avenue S. E. Bellevue, WA 98008-5452 Attach additional pages if necessary Ronald J. Straka, P.E. , Engineering Supervisor 1) Applicant: City of Renton Surface Water Utility Address: 200 Mill Avenue South - 4th Floor Renton WA 98055 Phone: ( 206 ) - 277 - 5547 (Scott Woodbury, Project Manager) 2) Agent: Address: Phone: 3) Location and description of project. Include approximate street address if known and vicinity map. The project is linear in shape and is adjacent to, and includes portions of, a reach of Springbrook Creek that flows to the north. The project area is approximately 3'/< acres and is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs eat-west through the project area approximately 400 feet north of SW 16th Street. The project area is slightly north and east of the former Longacres racetrack and slightly southeast of the Metro Wastewater Treatment Plant. The attached project narrative provides a complete description of the project. 4) Provide legal description for project area: Section24 (SE & NE ,) Township 23 N Range 4 E 5) Water body to be affected by project (if unnamed tributary, specify water body it is tributary to, and Water Resource Inventory Area (WRIA) number if known) Springbrook Creek, River mile 0.5 to 0.7 (WRIA 09.0005) - - G 6) Indicate nature of expected Water Quality problems and any proposed discharges. (pH, dissolved oxygen, temperature, turbidity, toxic materials, etc. ) A temporary increase in the turbidity may occur due to erosion of exposed soils by rain and/or wind storms during construction. Discharge of ground- water withdrawn by dewatering operations may also increase the turbidity due to oxidation of dissolved iron in the groundwater upon exposure to the atmosphere. 7) Provide schedule and duration of project activities which impact Water Quality. Include estimated life of project. Construction is proposed for the summer of 1994. Any construction within the existing channel will be allowed to occur during the summer months of the Washington State Department of Fisheries "window" from June 15 - September 15 as approved and in accordance local, state and federal permit conditions. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. The contractor will prepare a construction mitigation plan, outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. 8) List proposed actions during project to reduce severity or duration of Water Quality impacts. State the plan of work for the portion of the project that may affect Water Quality, include an erosion and sedimentation plan (this may include submission of plans and specifications for the project) . See project narrative "Mitigation" and "Special Plans and Reports" Sections. 9) Provide copies of the following: A. Hydraulic Project Approval (HPA) . Application for the Modification and HPA may be concurrent, however if the HPA is not received at the time of this application, it will need to be submitted before the Modification is issued. B. Date of SEPA compliance. Attach a copy of the cover sheet of final SEPA determination as issued by the appropriate authority. Z/ Applicant ignature Date PROJECT NARRATIVE Project name: 1-405 Box Culvert/P-1 Channel Improvement Project (Springbrook Creek RM 0.5-0.7), from SW Grady Way to SW 16th Street. Size and location of the project: The project is linear in shape and is adjacent to, and includes portions of, a reach of Springbrook Creek that flows to the north. The project area is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs east-west through the project area approximately 400 feet north of SW 16th Street. The project area is slightly north and east of the former Longacres racetrack and slightly southeast of the METRO Wastewater Treatment Plant. The entire project is in the SE 1/4 and NE 1/4 of Section 24, Township 23 North, Range 4 East, W.M., in King County, Washington. The project area is approximately 3-1/4 acres. Existing improvements and project description: The proposed project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel made from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). Improvements which have been completed during this period include the Black River pump station forebay, P-1 Channel improvements from the forebay to SW Grady Way, the SW Grady Way and 1-405 box culverts, the P-1 Channel/Oakesdale retaining wall, and the SW 16th Street bridge. The purpose of this proposed project is to complete the construction of P-1 Channel improvements from SW Grady Way (Sta 680+26.37) to SW 16th Street (Sta 670+76). The existing Springbrook Creek stream channel, which conveys drainage from a 22 square mile watershed, directs flows north under the SW 16th Street bridge toward the 1-405 box culvert. However, since the corresponding channel improvements to allow flows into the culvert were not constructed, fill now blocking the 1-405 box culvert forces the flow around the culvert to the west and underneath the 1-405 bridge adjacent to the culvert. Continuing downstream from under the 1-405 bridge, the flow is redirected to the northeast to pass through the SW Grady Way box culvert and on toward the Black River Pump Station forebay. Only three of the five cells of the SW Grady Way culvert are currently open because of the existing narrow inlet channel blocking the outer two cells. The channel reach between 1-405 and SW Grady Way is a source of downstream sedimentation due to erosion along the west bank of the reach. The project area provides minimal habitat for wildlife because the surrounding streets confine Springbrook Creek to a narrow, defined corridor disconnected from other habitat in the area. Shoreline anchoring work by the Department of Transportation under 1-405, significant channel erosion and sedimentation result in low quality fish habitat. The narrow existing channel also affords little in-stream or off-stream shelter to migrating fish which the proposed project will provide. The lower reach of Springbrook Creek is primarily suited for migration and rearing. The proposed channel construction would begin immediately upstream of the SW 16th Street bridge and extend north along Oakesdale Avenue SW through the 1-405 box Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 2 culvert to SW Grady Way. Fill blocking the 1-405 box culvert would be removed and Springbrook Creek flows allowed to pass through the 1-405 box culvert. Low flows and most of the high flows would pass through the new channel. A low flow channel to maintain fish passage is included in the design which would connect to one of the five bays of the 1-405 and SW Grady Way box culverts which have a lower bottom elevation than the other bays for fish passage. Fill blocking the SW Grady Way box culvert would also be removed. The existing stream channel adjacent to and under I- 405 would be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. The proposed project would provide many benefits including increased flow conveyance capacity and flood storage as well as alleviation of the existing erosion problem. The project completes the channel improvements for which the existing I- 405 and SW Grady Way box culverts, P-1/Oakesdale retaining wall, and SW 16th Street bridge capital improvements were designed and constructed. The project utilizes land area, which by its location and zoning designation is of no commercial use, but will be enhanced to provide a riparian corridor for fish and wildlife habitat. These improvements would also be beneficial to water quality by reducing channel erosion, maximizing biofiltration, and reducing exposure to solar induced temperature increases through a habitat planting plan to be constructed as part of the project. The project will also provide for a trail link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north and south, which will provide increased recreational opportunities. The trail alignment from the south side of SW Grady Way to about 80 feet north of SW 16th Street follows along the top of the west bank of the existing Springbrook Creek channel. The alignment of the remaining portion of the trail to SW 16th Street and the crossing may occur along one of two route options within a proposed corridor. The corridor extends from the west end of the SW 16th Street bridge to the first new Boeing Customer Service Training Center (CSTC) driveway west of the bridge, and from the terminus of the proposed trail about 80 feet north of SW 16th Street to the southern edge of the SW 16th Street right-of- way. The two options considered in this application are: 1) a crossing opposite the Boeing CSTC shoreline trail; or 2) a crossing at the first Boeing CSTC driveway intersection west of the SW 16th Street bridge. The crossing alternative to be constructed will be selected by the City Transportation Division in a planned study of the crossing alternatives. Acquisition of a permanent easement for the trail link is proposed to secure the necessary rights to allow public use. The easement will primarily follow the existing channel and minimize the area impact on the adjacent properties. Only the 80 foot segment directly north of SW 16th Street may have a greater land area impact if the crossing will be constructed at the Boeing CSTC driveway. This is because of its increased distance from the channel compared to the option of crossing opposite the shoreline trail south of SW 16th Street. Current use of the project site and adjacent properties: The existing Springbrook Creek channel that flows through the project area is best defined as a medium utility use and with adoption of the Interim Zoning Code has become an existing non-conforming use (Renton, 1993a). This reach is the only outlet for a 22 square mile tributary drainage area and cannot be abandoned, but will remain in use. The new channel segment to be constructed with the proposed project, which Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 3 is adjacent to and includes portions of the existing channel, will create additional medium utility use between the existing channel and the 1-405 Oakesdale Avenue SW underpass. The project area is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs east-west through the project area approximately 400 feet north of SW 16th Street. The project area is slightly north and east of the former Longacres racetrack site now being developed as the Boeing CSTC facilities, and slightly southeast of the METRO Wastewater Treatment Plant. The property in the project area to the north of 1-405 and west of the project channel is vacant land, as is the property south and east of SW 16th Street. A single family dwelling with horse pasture is to the west of the channel, south of 1-405, and north of SW 16th Street. General soil types found on the project site: The USDA SCS Soil Survey (SCS, 1973) for the King County Area, Washington, designates the soil in project area as urban land (Ur). The natural soil layers of Urban land soils are defined as having been disturbed and/or covered with fill material. Several geotechnical studies (CH2M Hill, 1987; GeoEngineers, 1984 and 1988; Hong, 1986) have been performed in the project area for the purpose of determining the construction requirements of the adjacent roadways and their related structures. In these studies, the soil profile was examined using drilled borings and test pits of varying depths (to as much as 80 feet). The findings of the studies were similar and indicative of the area's history as a floodplain for the Green, White, Black, and Cedar Rivers. The soil profile reflected a layering of material likely due to stream bedload, floodplain, and alluvial deposition. Below the surface, several feet of sandy silt and silty sand were encountered in the borings with apparent lenses of clay, gravel, silt, and peat. The soil profile grades downward to more coarse and dense sand with increasing gravel proportions, but also with lenses of finer materials and debris. The City of Renton has mapped the Green River Valley area as a seismic hazard (Renton, 1993b), due to the liquefaction potential of the unconsolidated sands present in the Valley soil profile. Even without the proposed project having been constructed, the adjacent structures are subject to liquefaction induced settlement. However, these structures were designed to accommodate the proposed channel improvement. The construction of the project is therefore not anticipated to impose unanticipated risks to structures in the project area due to seismic ground movement and acceleration. The I- 405 bridges in the vicinity are constructed on piling and other structures are founded on broad footings to reduce the risk of settlement due to liquefaction. A portion of the west bank of the existing channel north of 1-405 has been eroded to a near vertical slope and is therefore unstable. This area will be graded to a more stable 2 horizontal to 1 vertical slope and protected with rip rap and vegetation. Nature of the existing shoreline: The reach of Springbrook Creek within the project area is an open channel which drains approximately 22 square miles of pervious and impervious land area from Kent, Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 4 Tukwila, King County, and Renton. Surface water runoff reaches Springbrook Creek from these areas by overland flow or from a system of culvert and open channel point discharges along its length. Springbrook Creek flows north to join the Black River in the Black River Pump Station forebay which is then pumped into the Green River. The Duwamish River, formed by the confluence of the Black and Green Rivers, flows northerly into the Elliott Bay of the Puget Sound. The entire project is within 200 feet of Springbrook Creek. Springbrook Creek, through the project area, is designated a Shoreline of the State by the Department of Ecology, which determined that the mean annual flow of the creek in the area of the project was equal to or greater than 20 cubic feet per second (cfs). The City of Renton shoreline designation of the project reach is urban (Renton, 1990). The entire project area also lies within the 100-year floodway and floodplain according to Federal Emergency Management Agency Flood Insurance Rate Map 530033C0453D (FEMA, 1989a). The FEMA Flood Insurance Study regulatory base flood (100-year) water surface elevation in the reach is 16.4 feet National Geodetic Vertical Datum (NGVD) at SW 16th Street (FEMA, 1989b). More recent preliminary hydrologic (Northwest Hydraulic Consultants, 1991) and hydraulic (R. W. Beck, 1992) modeling analysis indicates that the base flood elevations of Springbrook Creek may be lower than those determined by FEMA. However, these and other analysis (Hammond, Collier, Wade- Livingstone, 1992) also identified existing and potential flooding problem areas upstream of the project reach due to high water levels in Springbrook Creek. The primary purpose of the proposed project is to increase the flood conveyance and storage capacity in the project reach and thereby reduce the level of flooding in existing upstream problem areas. The existing Springbrook Creek channel, including the reach in the project area, has been extensively modified and disturbed by dredging and vegetation management activities performed by adjacent land owners and Drainage District No. 1 . In an on-site field inventory (SCS, 1989), the existing channel was noted to have open water approximately 15 to 20 foot wide with 2 to 3 feet of woody and herbaceous vegetation on each side of the channel. The existing channel under 1-405, however, has been severely eroded by flood waters and disturbed by subsequent shoreline anchoring efforts by the Department of Transportation under 1-405. The significant channel erosion and sedimentation result in low quality fish habitat. A wetland inventory of the proposed project area was also conducted on March 1, 1993 and the findings summarized (SCS, 1993a, b, c). Eight sites were sampled and described. Only the southern 1-405 roadside drainage ditch was identified as a wetland according to the criteria of the Corps of Engineer's 1987 Wetland Delineation Manual and the 1989 Federal Manual for Identifying and Delineating Jurisdictional Wetlands. Two delineation methods are required because Springbrook Creek through the project area is not only under local jurisdiction, as defined by the 1989 Manual, but is also subject to the jurisdiction of the Federal Clean Water Act, Section 404, administered by the Corps, as defined by 1987 Manual. The wetland (Wetland A) is linear in shape and approximately 0.01 acre in size per 100 lineal feet of ditch. Because of its size, type, location adjacent to 1-405, and history of disturbance the wetland is given a low quality, Category 3 rating according to the City's Wetlands Management Ordinance. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 5 Fish have been recorded migrating upstream at the Black River Pump Station (Renton, 1993c). The fish counter at the pump station had recorded the following numbers for several years for the period from September through January. 1983-1984: 155 1986-1987: 82 1989-1990: 77 1984-1985: 1 19 1987-1988: 166 1990-1991 : 69 1985-1986: 47 1988-1989: 95 1991-1992: 107 The suitability of Springbrook Creek for salmonid spawning is poor and the rearing habitat is degraded. Upper tributary streams, such as Garrison Creek, may provide spawning and rearing habitat and Springbrook Creek provides the needed migration route. The Department of Fish and Wildlife has indicated that Springbrook Creek does support runs of coho salmon and other anadromous fish including steelhead, and cutthroat trout (Renton, 1 993c). The proposed project will help to enhance the habitat quality of Springbrook Creek within the project reach through a combination of riparian plantings and installation of in-stream rock and woody debris structures. The existing channel will be preserved and provide off-channel flood storage that could be used as a resting area during high flows. Proposed construction dates and phasing: Construction is proposed for the summer of 1994. Any construction within the existing channel will be allowed to occur during the summer months of the Washington State Department of Fish and Wildlife "window" from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Because of uncertainties regarding weather and on-site conditions, extension of the fisheries window up to October 15, 1994 may be necessary to complete construction. Any extension request will be coordinated with the Department of Fish and Wildlife. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. The contractor will prepare a construction mitigation plan, outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Specific work proposed: The City of Renton proposes to perform the following activities: 1 . Remove soil blocking the existing box culvert under Interstate 405 (1-405) for the purpose of creating a new inlet and outlet channel for the culvert that will allow flows in Springbrook Creek to pass through. 2. Widen a portion of the existing Springbrook Creek channel between SW Grady Way to SW 16th Street leading to and from the 1-405 box culvert. The existing Springbrook Creek channel parallel to the proposed 1-405 inlet and outlet channel will be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 6 3. Regrade and stabilize a segment of nearly vertical, eroded stream bank on the west side of the existing channel immediately north of 1-405. 4. Install a new pedestrian trail culvert crossing over the south 1-405 roadside ditch that is located on the west side of the existing Springbrook Creek channel. The pedestrian trail will provide a link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north of SW Grady Way and south of SW 16th Street. The maximum depth of fill needed for the pedestrian trail culvert crossing of the 1-405 south roadside ditch is approximately 10 feet. 5. Install five fish habitat structures within the low flow channel to provide resting areas and increased habitat diversity. Two of the structures will be placed within the existing ordinary high water mark of the Springbrook Creek channel. The proposed structures consist of instream boulder groups as well as tree trunk segments anchored into the stream bank and projected out into the channel. 6. Plant dwarf willows along the edge of the low flow channel to provide shade from solar exposure. The willows also protect against erosive flows while presenting minimal restriction of the channel flood conveyance capacity. 7. Plant shrubs to create two wildlife habitat areas adjacent to the channel. The plantings will increase the quality and diversity of habitat above that currently existing in the channel area. 8. Install stream bypass and dewatering systems to maintain construction areas sufficiently dry to complete the proposed work. The proposed channel construction south of the 1-405 box culvert consists of 215-feet of new channel and 200-feet of widened channel construction. The 215-foot new channel segment extends south from the southern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 200-feet of widened channel consists of a 160-foot, fully widened, segment that extends south from the new channel to the south end of the SW 16th Street bridge, and a 40-foot transition segment to blend the fully widened segment to the existing channel south of SW 16th Street. The proposed channel construction north of the 1-405 box culvert includes 50-feet of new channel, 120-feet of fully widened channel, and 90-feet of stream bank regrading and stabilization. The 50-foot new channel segment extends north from the northern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 120-foot, fully widened, segment of the existing channel extends downstream, north of the new channel, to connect to the southern entrance of the SW Grady Way box culvert. The 90-foot length of stream bank to be stabilized is located on the west side of the existing channel, beginning immediately north of 1-405 and extending north to blend with the new west bank of the proposed widened channel section. To maintain fish passage, a low flow channel with 12-foot bottom width and 3 horizontal to 1 vertical side slopes is included in the design of the new and widened channels. The proposed low flow channel connects to one of the five bays of the I- 405 and SW Grady Way box culverts which have a lower bottom elevation than the other bays. The channel design slope is very gradual at 0.02%, and the bottom elevation varies from 0.09-feet at SW Grady Way to 0.24-feet at SW 16th Street. The Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 7 existing channel bottom elevation varies from 0 to 2 feet from SW Grady Way to SW 16th Street (1929 NGVD datum). The depth of the low flow channel is 2.5-feet and the overall top width is 27-feet. The maximum depth of excavation from existing to finish grade is approximately 16-feet. The proposed main channel, including the low flow channel, averages 65-feet in width. The design slope of the main channel is very gradual at 0.02%, and the bottom elevation varies from 2.59-feet at SW Grady Way to 2.74-feet at SW 16th Street (1929 NGVD datum). The design channel side slopes vary between 2 or 3 horizontal to 1 vertical. Three concrete wing walls totaling 100-feet in length and one rock-filled gabion wing wall 80-feet in length will be installed at the entrances and exits to the SW 16th Street bridge, 1-405 box culvert, and SW Grady Way box culvert. However, these structures are located out of the existing ordinary high water mark of Springbrook Creek. To construct the proposed channel, the existing material necessary to achieve the proposed channel section subgrade will be removed. The total amount of excavation is estimated to be 15,700 cubic yards (CY), of which an estimated 2,100 CY will be removed from the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. Subgrade is generally 1.5-feet below the proposed finish grade, with a portion of the proposed channel directly adjacent to the Oakesdale Avenue SW underpass and underdrain system over excavated to 5-feet below the proposed finish grade to allow placement of a watertight PVC membrane. The underdrain system, which protects the Oakesdale Avenue SW underpass from groundwater seepage onto the roadway, must be protected from the short-circuiting of water from the proposed channel which will be located directly adjacent to the underdrain system. To prevent this piping of water from the channel through the soil and into the Oakesdale Avenue SW underdrain system, which is lower in elevation than the proposed channel bottom, the membrane will be connected to the Oakesdale Avenue SW P-1 channel retaining wall and extended west across the width of the channel (CH2M Hill, 1987). This increases the flow path that water from the channel must travel to reach the underdrain system and will effectively reduce the potential for removal of finer particles from supporting soils due to piping and overburdening of the underdrain pump system. The use of sheet piling driven into the channel bottom to lengthen the flow path was also considered, but was not selected because the piling may reach refusal too soon to provide effective protection. The total estimated quantity of fill for the channel work, including filter material and rip rap, is 8100 CY, of which an estimated 1,700 CY will be placed in the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. A total of 3 1/2-feet of fill material will be placed on the PVC membrane to achieve subgrade. To reach finish grade on a portion of the channel, including the low flow channel, a total of 1/2-foot of sandy filter material and 1-foot of clean, loose rip rap will be placed on the subgrade. Other areas of the channel not receiving rip rap that are subject to potential erosive flows will be brought to finish grade with fill material and overlain with an excelsior blanket. This will protect the exposed soil and allow vegetation to become established to further protect against erosion. Construction of the pedestrian trail shown in the plans will require an estimated 500 CY of fill to achieve subgrade, of which 40 CY will be placed in the area defined by Wetland A. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 8 Fill material will be well graded sand to silty sand. The material will be from an approved gravel mining site and will arrive to the site via 1-405, SW Grady Way, Oakesdale Avenue SW, and SW 16th Street. The specific source of the fill material and haul route is unknown at this time, but will be provided as a part of the final construction management plan, and will be submitted for approval to the City Development Services Division. Mitigation: A copy of the Mitigation Measures document issued by the City of Renton as required under the State Environmental Policy Act is included as Appendix A. An overview of the special plans and reports to be prepared for the project is provided in a subsequent section of this project narrative. The proposal includes fish habitat components developed in consultation with the Washington Department of Fish and Wildlife. Bankers dwarf willow cuttings (salix cotteti) will be planted on 2-foot centers along both banks of the low flow channel to provide shading and visual screening for migrating fish. The drawf willow does not develop into a large tree that would present an obstruction to the flood conveyance capacity of the channel, but will temporarily lay over during times of high flow. Five in-stream structures of three different types are also included in the project design to create resting and hiding areas for migrating fish. These structures include the following: A. Placing groups of three 24-inch diameter boulders in the low flow channel. B. Placing large diameter boulders in the low flow channel with rock rip rap around the boulders and up one of the side slopes of the channel. C. Anchoring a section of tree trunk with the root wad exposed in the channel bottom at a 30-degree angle to the cross section of the channel. Two wildlife areas are also to be established with the planting of approximated 300 shrubs at 3-foot centers. The shrub type will be Pacific Serviceberry, Tall Oregon Grape, Redosier Dogwood, and Common Chokecherry. These two areas will have four rows parallel to the channel with groups of 3 to 5 plants of the same species staggered between the rows. Special Plans and Report: The following special plans and reports will be prepared to ensure that potential impacts are avoided if possible. Where impacts cannot be avoided, the plans and reports will identify methods to minimize anticipated impacts and to ensure that these impacts will be mitigated. Erosion control plan. Before any construction activity occurs, a pre-construction meeting with the contractor will be held with the project engineer and the City. Prior to the meeting, the contractor shall provide to the City and Engineer an erosion control plan for review and approval. The plan shall be based on the King County Surface Water Design Manual, as adopted by the City of Renton, proper construction practices, and any measures detailed in the contract plans and specifications. The contractor will Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 9 also be responsible for addressing any state and federal permit conditions required for the project. Erosion and sedimentation controls, such as straw bale barriers, silt fences, and straw mulch for temporary protection of exposed soils should be applied during construction. Stabilized construction entrances and washpads should be installed at the beginning of construction and maintained for the duration of the project. As construction progresses and unexpected or seasonal conditions dictate, the contractor shall anticipate that more erosion and sedimentation control facilities will be necessary to insure complete siltation control on the project site. It shall be the obligation and responsibility of the contractor to revise or modify the erosion control facilities to meet any new conditions that may be created by construction activities and to provide additional facilities, over and above minimum requirements, as may be needed to protect adjacent properties and water quality of the receiving drainage system. Any construction within the existing channel will be restricted to during the summer months of the fisheries window from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. As noted below the contractor will prepare a construction mitigation plan outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Project design final stabilization measures include a 1 to 2-foot deep rock rip rap protective layer placed over disturbed areas under and adjacent to the SW 16th street bridge, the low flow channel area, and a portion of the west bank of the channel between 1-405 and SW Grady Way. A 0.5-foot deep layer of filter material will be placed under the rip rap to prevent washing of any finer material from the underlying soil. Wire mesh gabions will be placed along a portion of the west bank just north of the SW 16th Street bridge to protect against erosive flows. A layer of filter material will be placed behind the gabions to prevent washing of finer material from the protected bank. All disturbed areas will be seeded with a grass mixture immediately following construction, except the low flow channel and within the drip line of bridges. Seeding shall be started as soon as definable segments of the excavated channel are completed as determined by the Engineer. Permanent seed mixtures shall be applied between April 1 to October 15. Winter seeding shall be applied outside the permanent seeding dates as needed, and followed with permanent seeding the next spring as approved by the Engineer. Following permanent seeding, a portion of the area outside the low flow channel that was disturbed during construction will be covered by an excelsior blanket for erosion control and to aid vegetative establishment. Construction mitigation plan. Prior to the preconstruction meeting the contractor shall also provide to the City and Engineer a construction mitigation plan outlining the construction schedule and phasing, the hours of operation, the proposed earthwork material source/disposal site and haul route, and any measures to be implemented to minimize the impact of construction to surrounding property owners and public streets. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 10 Dewatering plan. Ground water withdrawal for temporary dewatering purposes is anticipated to be necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for the proposed channel. Geotechnical reports for other projects in the project area describe ground water levels at relatively shallow depths (CH2M Hill, 1987; GeoEngineers, 1984 and 1988; Hong, 1986). Because of potentially high ground water conditions the contractor for the proposed project will be required to determine if conditions at the time of construction are low enough to allow construction. If not, the contractor will be required to construct well points at strategic locations in the project area to draw down the water table sufficiently. Before any dewatering the contractor will be required to submit a dewatering plan for City and SCS review. The amount of ground water to be withdrawn is a function of the soil conditions, water table elevation, required drawdown, and wellpoint location and depth. Therefore, the number of wellpoints and the amount of groundwater that will be withdrawn cannot be estimated at this time. All ground water withdrawals are to be directed, if conditions permit, into the METRO sanitary sewer, temporary settling pond, or other device to minimize the discharge of iron rich water into Springbrook Creek. Springbrook Creek bypass plan. Springbrook Creek will be routed to bypass the work area while construction is in progress within the existing stream channel. The bypass is anticipated to be accomplished by pumping or gravity flow through a piped conveyance or open channel, or some combination of these methods. This is necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for the proposed channel. Bypassing the surface water flow around disturbed areas will also minimize the erosion potential of the exposed soils and protect the water quality of Springbrook Creek. The sequence and timing of the any bypass is to be contractor determined, subject to the review of the City and SCS. Any proposed surface water bypass will also be reviewed by the Washington Department of Fish and Wildlife and coordinated with adjacent property owners. It is anticipated that construction of the channel north and south of 1-405 will occur in two separate phases so that the bypass distance will be reduced from that required to bypass the entire reach. The actual quantity of water to be bypassed depends upon the weather conditions at the time of construction. By working in the summer months the amount of flow to be bypassed will be minimized. Sediment quality report. Because the reach of Springbrook Creek within the project area is downstream of potential point and non-point pollution sources, the sediments in the stream bed will be analyzed to determine if contaminants exist. Contaminants are known to be present in the Springbrook Creek system and have been monitored at several locations (Renton, 1993c). One of the monitoring stations was at SW 16th Street bridge. Contaminant levels in sediments sampled at this station in 1992 were determined to be below Model Toxics Control Act Cleanup Regulation (WAC-173-340) cleanup levels. These levels apply to sediments disposed of on land other than in a permitted landfill. Dredging or other construction disturbance as part of this project could cause contaminated sediments that may be in the project reach to be suspended and carried downstream. Contaminants that may be in the dredge spoils could also be a potential health risk if not disposed of properly. Although sampling at SW 16th Street indicated that special disposal of the sediments would not be required, SCS has contracted with Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 11 Herrera Consultants to test a surface sample and a sample at one foot depth at a total of four locations within the project area. The field work was complete at the end of September and a final report of the results is expected in April 1994. References: CH2M Hill. 1987. Geotechnical Report, Oakesdale Avenue. Bellevue, WA. Prepared for City of Renton, Renton, WA. Federal Emergency Management Agency. Federal Insurance Administration. 1989a. Flood Insurance Rate Maps, King County, WA, and Incorporated Areas. September 29. Bothell, WA. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 12 1989b. Flood Insurance Study, King County, WA, and Incorporated Areas, Volumes 1 , 2, and 4. September 29. Bothell, WA. FEMA. See Federal Emergency Management Agency. GeoEngineers. 1984. Report of Geotechnical Investigation, Box Culvert, SW Grady Way. Bellevue, WA. Prepared for City of Renton, Renton, WA. 1988. Report of Geotechnical Investigation, Proposed Box Culvert, SW 16th Street. Bellevue, WA. Prepared for City of Renton, Renton, WA. Hammond, Collier, Wade-Livingstone. 1992. City of Tukwila Nelson Place/McLeod/Boeing CSTC Storm Drainage Study Technical Report. Seattle, WA. Prepared for City of Tukwila, Tukwila, WA. Hong Consulting Engineers. 1986. Geotechnical Engineering Evaluation for P-1 Channel - SR405 Box Culvert. Lynnwood, WA. Prepared for ABKJ, Seattle, WA. Northwest Hydraulic Consultants. 1991 . East Side Green River Watershed Plan, Hydrologic Analysis. Seattle, WA. Prepared for R. W. Beck & Associates and City of Renton, Renton, WA. R. W. Beck and Associates. 1992. East Side Green River Watershed Plan, Hydraulic Analysis Report. Seattle, WA. Prepared for City of Renton, Renton, WA. Renton. 1990. Shoreline Master Program. Renton, WA. 1993a. Interim Zoning Code. Renton, WA. 1993b. Interim Land Use Element of the Comprehensive Plan. Renton, WA. 1993c. Black River Basin Water Quality Management Plan. Seattle, WA. Prepared by R. W. Beck and Associates and Herrera Environmental Consultants in association with Jones & Stokes Associates, Inc. SCS. 1973. Soil Survey of the area of King County, WA. Washington, DC. . 1989. Letter to Rod Den Herder summarizing biological assessment of the SW Grady Way to SW 16th Street realignment. June 1 . Spokane, WA. 1993a. Letter to Roderick Den Herder summarizing wetlands determination - SW Grady Way to SW 16th Street. June 1 . Olympia, WA. . 1993b. Letter to Roderick Den Herder with additional classification of wetland determination for ditch on the south side of 1-405 - SW Grady Way to SW 16th Street. November 3. Olympia, WA. . 1993c. Letter to Roderick Den Herder with additional classification of wetland determination for ditch on the south side of 1-405 - SW Grady Way to SW 16th Street. November 29. Olympia, WA. H:DOCS:94-227:SSW:ps " APPENDIX A DETERMINATION OF NON-SIGNIFICANCE-MITIGATED MITIGATION MEASURES APPLICATION NO(S): LUA-94-001,ECF,SP,SA,V,SM,CU APPLICANT: City of Renton, Surface Water Utility PROJECT NAME: 1-405 Box Culvert/P-1 Channel Improvement (Springbrook Creek) DESCRIPTION OF PROPOSAL: The purpose of this proposed project is to complete the construction of P-1 Channel improvements from SW Grady Way to SW 16th Street. The proposed project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel made from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). The existing Springbrook Creek stream channel, which conveys drainage from a 22 square mile watershed, directs flows north under the SW 16th Street bridge toward the 1-405 box culvert. However, since the corresponding channel improvements to direct flow into the box culvert were not constructed, fill now blocking the 1-405 box culvert forces the flow around the box culvert to the west and underneath the 1-405 bridge adjacent to the box culvert. Construction of these improvements is planned now to improve the functioning of the channel. A pedestrian trail will also be established pursuant to the City's Master Trails Plan. LOCATION OF PROPOSAL: Springbrook Creek/SW Grady to SW 16th St. MITIGATION MEASURES: The Environmental Review Committee issued a Determination of Non- Significance - Mitigated with the following Mitigation Measures: 1. To address construction impacts of the proposed project on the natural and built environment, the applicant shall submit a construction mitigation plan for approval of the City and SCS. 2. To minimize the potential impact of temporarily routing Springbrook Creek to bypass the work area and implementing dewatering operations while construction is in progress within the existing stream channel, the applicant shall submit a bypass plan and dewatering plan for approval. 3. To address construction impacts of the proposed project on the natural and built environment, the time and extent of disturbance within the channel shall be kept to a minimum. As soon as definable segments of the work are determined to have been completed, or as unexpected and seasonal conditions dictate, disturbed areas are to be stabilized using the methods proposed in the project design, such as seeding, plantings, rip rap, and erosion control blankets. 4. To minimize the impact of temporarily preventing passage of fish through the channel, construction within the existing channel will be restricted to the period between June 15 - September 15 as approved and in accordance with permit conditions to be established by the Washington State Department of Fisheries. 5. In order to determine if pollutants that may be in sediments to be removed during the project are below levels requiring special disposal and/or if additional sediment testing is required, the applicant shall submit a sediment monitoring report to the City and SCS for review. 6. To minimize potential impact to cultural resources that may be present in the project area, the individuals involved with construction will be required to watch closely for buried artifacts and remains, and if found, cease work and provide notification to SCS, the City, and the Washington State Historic Preservation Officer to determine the course of action. Advisory Notes to Applicant: the following notes are supplemental information provided in conjunction with the environmental determination. Because these notes are provided as Information only,they are not subject to(he appeal process for environmental determinations. 1 In accordance with standard contract requirements, normal working hours will be between 7:00 a.m. and 6:00 p.m., Monday through Friday. Permission to work other hours and times must be obtained from the City and may be subject to the City Noise Level Regulations and other conditions. The construction mitigation plan should include advance notification and other provisions as needed to minimize the impact of construction on the occupants of the existing house adjacent to and west of the project area. 2. To minimize the potential for impact to existing structures, the applicant and construction contractor shall coordinate with METRO and WSDOT as applicable. 3. The mitigation measures included in this determination were proposed by the applicant in the project application documents. It is the responsibility of the applicant to ensure that all mitigation is implemt rated as proposed, and that any additional information requiring review is submitted and approved prior to conslrL tion. mitmeas - 1 - 02/03/94 RAILROAD too +'�• `�� SPRING(3Roor UK ( Q� Golf nurse 130 �, = Sewage M°I6 1 ST :Longacrej PR Ec;r I I Rom'-;� O,J LOCATl01J F Wrack 110 0. -- ----�1- I [LOI Reservoir I W I ]■ o 25 i'.` :30 I i % I . I i I _ SOURCE: USGS, 1973. RENTON, WA " `C"ry QUADRANGE MAP swaccr�x�nav b 0 1 =2000• 2000 a i A in2N STAti ( IN FEET ) No SCALF °o 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: VICINITY MAP COUNTY OF: KING = ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: SSW/MDD APPLICATION BY: CITY OF RENTON SCALE: AS NOTED SHEET: 1 OF 16 DATE: 3-15-94 i W s S SW GRAD Y WA Y BOX CUL VERT \ '#P{ GRP�{ / LEGEND: PROPERTY LINES / - - ROAD CENTERL/NE \ 0 -SDALE AVE SW RETAINING WALL -----I--i--� — -- — --- — ----/-405 BOX CULVERT /—405 BRIDGE ' i BRIDGE ABUTMENT 1 SR. 405 AND SUPPORT PILING WETLAND ';4 --- -- — \� OAKESDALE AVE SW RETAINING WALL APPROX/MA TE TOP APPROX. TOP OF BANK Q\ \ OF BANK SINGLE FAM/L Y RESIDENCE N, \\� % APPROX. ORDINARY SW 16TH ST HIGH WA TER MARK \ \ 1 F BRIDGE (APPROX. A VE. �1 1 DEPTH 2-4 FTC 1 -- I 5.W 76 7H Sr DIRECTION OF FLOW _ FOR SPR/NGBROOK R��� ' h CREEK 0 "( RETAINING WALL PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM Pi CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD COUNTY OF: KING SHEET TITLE: EXISTING CONDITIONS PLAN ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON � 1. KING COUNTY DRAINAGE DIST. NO. 1 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON o 2. PUGET WESTERN, INC. 3. CITY OF RENTON SHEET: 2 OF 16 4. GROUP HEALTH COOPERTIVE 0 1 =120' 120 DATE: 3-15-94 zi 5. BOEING COMPANY 6. WASHINGTON DEPT. OF TRANSPORTATION 2 7. MUNICIPALITY OF METROPOLITAN SEATTL ( IN FEET ) it lD O m m f / `t 1- •. - 0 1 =1 20' 120 IN FEET i i t� 1•. WETLAND "A"""'"LMA-IFD'�.. i:::::%'`'. • WITHIN /-405 ROADS/DE `'•, i : 1 ', '•, ;_s. �c+^ _ - ORA/NAGS DITCH, /S a ` A— .....__T....._- ASSUMED NOT..-,A9 8F "WA TERS OF THE UNITED `t' STA TES, PER 40 CFR 328.3(A). THEREFORE --5 -� FILL FOR PEDESTRTA TRAIL CUL VfRT CROSSING 1-�`• ::; :�.. t I ;ti_..._ IS NOT REGULATED. ....--;T.... - t `: t LEGEND: ti _% `i ''•c; i AREA OF HIGH IMPACT ,r WITHIN EX/S77NG ORDINARY HIGH WA TER MARK DUE TO CUT/F7LL FOR PROPOSED CHANNEL ` 1 \ o AREA OF LOW IMPACT WITHIN ORDINARY HIGH � �• _•� � �, `=_ WA TER MARK DUE �.:........ ---: .... ... �. .............. TO TEMPORARY DEWA TERING/ —............ INC/DENTAL DISTURBANCE .............. —__................ — -�-- — - NECESSARY TO ACCOMPLISH PROPOSED CHANNEL CONSTRUCTION--:.......-_Y::::: ::: ..... ....._ a — .................................. > •� 7 ti PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO h BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: N COUNTY OF: KING SHEET TITLE: AREAS WITHIN ORDINARY STATE OF: WASHINGTON ADJACENTT PROPERTY Y OWNERS: HIGH WATER MARK IM- APPLICATION BY: CITY OF RENTON 12 SEE SHEET 2 OF 16 PACTED BY CONSTRUCTION, a SHEET: 3 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED 2 O m O m 1n - 40" CONC. WING WALL ^ �� •} QC 6YIDENEO CHANNEL 0 1 =t 20' 120 ( IN FEET ) 50" 1-405 BOX CUL VLERT OUTLET CHANNEL _ — f • 90' STREAM'`_: M ERUNE LOW FLOW CHANNEL HANK IMPROVEMENT I 20' CONC, WNGWALL `s:: ..• — —......__ --- IN, —H16H FL OW CHANNEL 40" CONC. WNGWALL `• , APPROX TRAIL v, ; ALIGNMENT — .... ---.__ . ___s..::-.. ��-' �. �•- - _ � 215"`{-405 BOX CUL IERT INLET CHANNEL EX/STING CHANNEL ' TO REMAIN LEGEND: f \ \ < NEW CUT/f/LL SLOPE PEDESTRIAN TRAIL 80' GABION WALL WIDENED CHANNEL NEW P£DES77?/AN j/BICKXE t:::::[:::::::::: � 1 TRAIL ACCESS CORRIDpQ _ "\' 1 I 1 _-- rr .............. ....... DE7DWINm BY tYTY .._ -- _: r..:::::::.:::: ........... 7RANSPORTA77CW DINSIQN ....................................................... ............................................................................................................... ................. . . I h IISQ+ PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING DATUM: 1929 NGVD COUNTY OF: KING SHEET TITLE.: PROPOSED CHANNEL AND z ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON PEDESTRIAN TRAIL PLAN APPLICATION BY: CITY OF RENTON SEE SHEET 7 OF 16 o SHEET: 4 OF 16 DRAWN BY: MDD DATE: 3-15-94 a SCALE: AS NOTED Q 2 W 0 1"=1 20' 120 ( IN FEET ) ♦ 1. r..."---.. .. -� . .•,. '�,�, 1•, 1 t \\ `,.Z.S. . - ----- , , , , i i i ;�,1 r •1 t , ........... .".......... ---..... .........'I.4.. . ............-- ----------- a , 1 m PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO �^ BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) " 1-405 CROSSING COUNTY OF: KING DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL CROSS o ADJACENT PROPERTY OWNERS: SECTION REFERENCE PLAN STATE OF: WASHINGTON APPLICATION BY: CITY OF RENTON o SEE SHEET 2 OF 16 SHEET: 5 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED i W v (U m Q 01 m O 1"=120' 120 ti• l` ( IN FEET ) , , , ,t , , `ii• ' r , LEGEND.- \ ; 1 ® PVC MEMBRANE �. } j :y. 1 ....................._......-.— _tea. `_ PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: PVC MEMBRANE PLAN COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 APPLICATION BY: CITY OF RENTON DRAWN BY: MDD SHEET: 6 OF 16 DATE: 3-15-94 SCALE: AS NOTED i W 4 i ,A \ 0 1"-120' 120 r \ ( IN FEET ) th a a v ..ti a � a t a a• : , tI IL \ LEGEND- ;r•.+` �. O F-ISH HABITA T COMPONENT F' `� ` `� �• '' a _ BANKERS DWARF WILLOWS �•, ® WILDLIFE HABITAT PLANTING a �' NOTE- 1 ............. i. SEE SHEETS 13-15 ..... ... - - - - - -................. FOR HASI TA T DETAILS ........................... ti I1 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: FISH AND WILDLIFE HABITAT COUNTY OF: KING ADJACENT PROPERTY OWNERS: MITIGATION PLAN STATE OF: WASHINGTONIn SEE SHEET 2 OF 16 APPLICATION BY: CITY OF RENTON o D SHEET: 7 OF 16 DRAWN 8Y: MDD DATE: 3-15-94 W SCALE: AS NOTED Q z C 1..=120' 120 IN FEET ) k... — ... , a, . ` , {d , , a — _ —.....— , 1 + � 1� ..... ......---... LEGEND. AREAS COIERED BY RIP RAP ti i • ; i.,, AREAS COVERED BY EXCELS/OR BLANkCT • (SEE C116 FOR DETA/LS) r 1 NOTES: l �w. .=zw 1. ALL DISTURBED AREAS, EXCEPT THE LOW FLOW ........... » — — y ------ CHANNEL AND WITHIN THE DRIP LINE OF BRIDGES, WILL BE COVERED WITH TOPSOIL AND SEEDED .......................... ............ WITH GRASS MIXTURE. I.. 2. SEE SHEETS 4 AND 10-12 FOR CHANNEL ` ° SECTION LOCATION AND DETAILS. .:::...........� ^t 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON 2 AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING `— DATUM: NGVD SHEET TITLE: STABILIZATION PLAN ADJACENTT P COUNTY OF: KING PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF APPLICATION BY: CITY OF RENTON 16 ° SHEET: 8 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED Q . 2 W C m 0 rn cr1 20 ,{US1Y✓G I-105 BOX 2L KR7 0115 AWC SW dUp✓rA✓BQY C14 KRr� "o / �APPROK Cl`WERLNf CROL`V A,RFACE JS J5 P-1 LWAWAEZ 80r7W 10 0 tow rzow crlAnaxz Borlcw 5 / PIC ACMSRA i 5 O v..:vv:•::n^:::.w:::::x•:::::: ... ......v::. .............................. 5 -.: -5 675+00 676+00 677+00 576*00 679+00 PROFILE CHANNEL nc sr 1sIW sr Ucroc� 20 EXISIINC 1-405 BOX L t 1£Rr 20 15 �Yfd 8 8 8 8 d - - _._.- 15 APPROX [CRIXMO SGWACE- �\ to to APPPDX 5 �a 5 �._._._._._._ �J�i�%HW//f/>YHH ___1�1QN"1LOK l2/dM'Q BQIbML_O O _ter -5 670+00 671+00 672+00 67J+00 674400 675+00 575+50 PROFILE 1Y CHANNEL LEGEND: ® CUT/1ZL WITHIN AREA OF ORDINARY HIGH WATER MARK A h ti 0 Q, 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING COUNTY OF: KING DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL 2 ADJACENT PROPERTY OWNERS: PROFILE STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: MOD APPLICATION BY: CITY OF RENTON SCALE: 1"=100' HORIZONTAL SHEET: 9 OF 16 1"=25' VERTICAL DATE: 3-15-94 W i W 10 � _Ed7SANG p WNGWALL� 21 `� la p Q rs V -------------- to- �I 01 10 APP M. GROUND SURFACE-1 10 • __ - 4 EX/SANG RETAINING WALL J OJt 5 FINI-CRAOE ° F7L MR V 0 I S -J -M -J0 -21 -.11 -11 -111 -5 0 3 10 15 20 15 .10 53 IO .5 30 3J 60 6J 1D SECTION p EA7577NC SW IC TI/ST BRmE� d p --.-__._._._._.______._._._._ IJ 13 Z c=s o 1O APPROX._GROUND SURFACE I l G' -- m li 13_ is to 5 111-GRADE �' J 0- nL 7ER 'ROCK NPA 0 I -5 -J -SJ -30 -IS -IO -J6 --V -15 -21 -11 -10 -S 0 1 10 Is 2) IJ JO A 40 Al J0 51 60 61 10 SECTION EX/SANG RETAINING WALL EVSANC WNCWALL 20 2 27 APPROX. (X7(X1N0 SC/RFAC£ I5 _ - O O JO ----f7N/SN GRADE to ROCK RIPRAP 0 O RIL -J -3 -35 -.11 -!3 40 -U -JO -?S -27 -r5 -10 -S 0 J r0 15 10 25 J° -11 10 IS 50 S4 60 65 10 SECTION LEGEND: ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK a (OHWM). h O U� 3 O PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING COUNTY OF: KING DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: DRAWN BY: MDD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 0 SCALE: 1"=20' HORIZONTAL SHEET: 10 OF 16 1"=20' VERTICAL DATE: 3-15-94 i W APPROX GROUND SURFACE m - CL o AK ECEV. 8.0 TYF' —EXM_90P BLANKET I I EX/SRNC RETAINING WALL 1 ROCK R/WRAP EXGLCSIOR BLANKET 1 PYC MEMBRANE I fm 7�R -70 -65 -60 -Ss -50 -u -40 -15 -JO -!s -20 -13 1 -10 -S Q s 10 11 70 IS F7 -0 M 45 JO ss SECTION 20- /,va.,.n 10 rAPPROX Q40UN0 SURFACE __________________._ ' i I EXCEL-VOR BLANKET EA"WG RETAINING WALL 1 DO NOT DswB J ROCK. RLPRAb o f7L 7ER o P4C�MEMBRAI _s -1 _Ip _63 -60 -33 -JO -41 -i0 -JIS -JO -11 -10 -11 -lo -1 ll 3 10 IS 2071 S1 JJ M �1 JO w3 I 1I SECTION 20 EXLSANG MANHOLE so CAB/MS I 2 I� I� APPROX CRWIVO SURFACE 1s 15 SLAP BLANKET 10 EXLSBNG 90"R 14 IO EXCEZ570R BLANKET EX/SANG RETAIN/NC WALL s MEMO WASTE \ I Cy, I" s SL WACE �' NE --I-- PYC M I VVV _3 -s -11 -20 -1.1 -to -s Q �.6 10 13 to is m 13 a is JO 3s SEMON w a LEGEND: m ® CUT/FILL WITHIN AREA OF h ORDINARY HIGH WATER MARK (OH WM). 0 ti PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING COUNTY OF: KING DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: DRAWN BY: MDD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 i SCALE: 1"=20' HORIZONTAL SHEET: 11 OF 16 1"=20' VERTICAL DATE: 3-15-94 i W I 20 ZO I I _._._�.__-___.____._. I W , 2 APPROX GROUND 5URFACE 1s 3! 2 o� e NEW RETAINING ��. 0,1 EX/SPNC RETAINING WALL J WALL r70cw- R/PRAP o F7L 7FR, asw BLANKET 0 F7L TER _J -5 -m -A -25 -20 -15 1 -10 -5 5 10 IJ 20 25 R/ m Io I3 30 55 PVC MEMBRANE I SECTION QD 20 20 I I _-__.___ --_ LIGHT, 1005T R/PRAP WI 15 31 ? rAPPROX GROM _SURFACE Is O(W el L -______-.__._.__ ro MAX. ELEV B.O 7YP 3 e ' �I R I F7N/SF1 LWAOE EX/SRNG RETAINING WALL s ROCK :•:�,•:. RIPRAP EXCEZVOR BLANKET 0 fk 7ER : -s -s -70 -85 -55 -50 �5 ­0 -55 -jo -25 -20 -15 -IO -5 Q 5 IO 15 X1 25 50 _U ♦0 15 50 55 PVC MEMBRANE i SEC770AI 2b 20 I r5 3 ? r5 C �� APPROX C;RIX1N0 SURFACE ------------------ !O 10 FIN/SH MADEEXISRNC RETAINING WALL 5 ROCK �._.---._.__._._._._._._ WRAP o �-------�--�'---- EXLEZ 9'QP BLANKET 0 F7L 7ER I -5 -5 -70 -65 O -SS -50 -45 -I0 -J5 _70 -25 -20 -15 -10 -5 S 10 15 A7 n .70 .15 IO l5 SO S5 PYt;MEMBRANE SECTION w LEGEND: m FORMCUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK (OHWM). 0 h PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX. CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON 12 SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON °p SCALE: 1"=20' HORIZONTAL SHEET: 12 OF 16 1"=20' VERTICAL DATE: 3-15-94 i W A �L0W�0w CHAM✓EL RES77NC BOULDERS (see detect B J 24"DIA. t7SN Ai SRNC BOULDERS LOW TLOw py�y� LOG M17N RQOT WAD J I 1/2'rAL V RE ROPE O RIPRAP A CONO?,17E SMX K (m detod A) O PLAN '? y N.T.S � PLAN N T.S FISH HABITAT COMPONENT FISH HABITAT COMPONENT 2 24'LYA. F7W J 24'LVA E757t REST&W BOULDERS RES71w BOULDERS Low tz Ow (sse doted BJ Low tzow ROCK RIPRAP C0WRE7£BLOCK (see detod AJ SO" 10.0' Loc MI7H Roor WAD WE SLAO r Del 0 112'CAL V. MIRE ROPE SECTION SECTION N.T.S N.Ts w A m h O U� i O a PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: N COUNTY OF: KING SHEET TITLE: HABITAT DETAILS STATE OF: WASHINGTON ADJACENTT PROPERTY Y OWNERS: DRAWN BY: MOD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 0 SCALE: AS NOTED SHEET: 13 OF 16 DATE: 3-15-94 a i . W i< r /S REBAR IMBEDDED 6" �L INTO CONCRE7E I I 3 24"DIA. FISH RES77NC BOULDER _�aLOW N�W DETAIL A W _ �: N.T.S EROCY /PLRAP 24"DIA. F7SH RES77NG BOULDER TREE TRUNK PLAN _ROOT WAD N.r.s II �^ /8 REBAR � NOTE., Foster fish resting bou/der to tree with /8 rebor inserted FISH HABITAT COMPONENT through the tree and 6"into 24"DIA. F7SH RES77NG BOULDER „CIA boulder Use on epoxy system to anchor the rebar to the PLAN stone. A- ft OT WAD 24"DIA. FISH RES77NG BO J 24 D/A. F75iY RES77NC BOULDERS IF LOW FZOW TREE TRUNK ROQY R/PRAP h h 1 -" '� CUT ROOTS NEXT TO � rk CHANNEL BOTTOM ELEVA TION SECTION DETAIL B ti N.T.S. p 3 O w PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING COUNTY OF: KING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS:SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON SCALE: NOT TO SCALE SHEET: 14 OF 16 DATE: 3-15-94 i E a �o•I>P I. IN,dnnlr yao:r b,r.snr m, ISOIACL MtC'PV LRAPC O O O 0 C1/-�0:Ck�k:7�Y 0 0®—Rcaau o— Mod,�r rMra a/Ra Plm(a 0 0 0 0 0 0 O o o o-P?VMAN PJCIi CCY , J Pbrr s'+a'tiv P�,r./m me ®®®®®�O O 0—PAOfK 5ER K£6798 r xo' w o flfANnEL rxLsrzv—3 a #7LDLIFE HABITAT PLANTING DETAIL N!S 000000 000000...0000000 4 Low- AACIVEO RYSCC (SP[WIN PCAr MSS An0 YAAU4L�J �LJ.�4� h )" ( O p 0 0 0 0 0 0 O OOOODO000000 YN. PLANTING DETAIL #7LLOTP PLANTING DETAIL N rs N T.S PLANTING LIST OUAN SCICNWC NAME CQIINpV NAME — SJZE 5" S UX Wr7FA BAM'ERS suow 12 NA.BJIIQ'10 LT/rr4T 2 R.w 75 AA"l CNCR nPMA P141Ix-F Kcc'BERRY Q]V11 J R,a 7J YANOVA AOL.QXA rAu P Ecm WIVE .S COV7ANETC J R.a 15 COPYWS 51MO"DU RCVCVER oMNChX 5 vd. CDV 49e J R.a 75 PRLIN'/S wpwl> NA DfL CY.1NA'W 0YOAT EMY CDYrA/X7{3 R.a rr b h O O U� 3 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 10 6 BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON o SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON o SCALE: AS NOTED SHEET: 15 OF 16 DATE: 3-15-94 a i W K BO s£E scar arcH o£rAIL � cHANNtz eoTTaM CROSS SECTION USE A COMMON ROW OF STABLES ON AO✓OLNWG BL NKETS Q4AI NN£L BOTTOM , r------------ CA�ADC STAPLE uo+r.zaosr aeve.o C i 3 _ r r� n« L-� 3 _ � BUTT BLANKET EOCES TOGETHER SECTION A MGM N. Ts. 16 Place blanket on slopes perpendicular to the drection of Now. Place blanket on thane/bottom parallel to the direction of Now. PLAN I__—\,dee22K_Ltcv rao £XOaSIOR BLANKET 24'acwr ' ---------- e 71,rl_ - T\ SECTION SLOT DITCH DETAIL N.Ts. 16 EXCELSIOR BLANKET DETAILS C N Ts. 16 e ti 0 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON c AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON o SCALE: AS NOTED SHEET: 16 OF 16 DATE: 3-15-94 i W • C CITY OF RENTON MEMORANDUM Date: March 15, 1994 To: Ron Straka, Surface Water Utility From: Lenora Blaumanj Subject: 1-405 Culvert/P-1 Channel Improvement (Springbrook Creek) LUA-94-001,ECF,SP,SA,V,SM,CU This memo is to inform you that the environmental review comment and appeal periods have ended for the Determination of Non-Significance - Mitigated for the above-referenced project. Since no appeals were filed, this decision is final. The date of Tuesday, April 5, 1994, at 9:00 a.m., has been set for a public hearing to review the land use permit application. The hearing, before Mr. Fred Kaufman, Renton Hearing Examiner, will be held in the Municipal Court Building, adjacent to City Hall, Renton, Washington. The applicant, in this case the City, is required to be represented at the public hearing. Scott Woodbury and you should attend. A copy of the Preliminary Report to the Hearing Examiner will be made available to you one week before the hearing. Please contact Georgia Shives, ext. 5582, or Sandi Seeger, ext. 5581, regarding picking up or receiving the staff report. If you have any questions I can answer, please call me at ext. 6181. Thanks. HEXMEMO.DOC HYDRAULIC PROJECT APPROVAL .` . R.C.W. 75 . 20 . 100 DEPARTMENT OF FISHERIES General Administration Bldg. R.C.W. 75 .20 . 103 Olympia, Washington 98504 �] April 9, 1996 (206) 753-6650 DEPARTMENT OF FISHERIES (applicant should refer to this date in all correspondence) PAGE 1 OF 2 PAGES 10 LAST NAME FIRST 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 00-95498-06 19 STREET OR RURAL ROUTE 7❑ ® 9❑ WRIA 200 Mill Ave S, 4th Floor ATTN: S . Woodbury 09 . 0005 CITY STATE ZIP 14 17 Renton WA 98055 12 ATER TRIBUTARY TO . 11 TYPE OF-PROJECT Springbrook Creek Green River Channel Change/ 13 UARTER SECTION TOWNSHIP RANGE(E-W) COUNTY SECTION NE 24 23N 04E King Bank Protection/ ————————————————————————————— —————————— Outfall TIME LIMITATIONS: 5❑THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY Immediately May 15, 1996 THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. SEE IMPORTANT GENERAL PROVISIONS ON REVERSE SIDE'OF APPROVAL NOTE : This Hydraulic Protect Approval (HPA) is a renewal of the original HPA issued on April 29, 1994 , last modified on September 28, 1995 . This HPA is in response to a written request by Scott Woodbury, City of Renton, on April 8, 1996, for minor bank protection repair, and it supersedes all previous HPAs and modifications for this project . 1 . A temporary bypass or flume shall be in place prior to commencement of work. 2 . A sandbag revetment or similar device shall be installed at the inlet to divert the entire flow through the culvert or flume . 3 . A sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area. 4 . Culvert or flume shall be of sufficient size to pass flows and debris occurring during the project . 5 . Prior to releasing the water flow to the project area, all work within the new channel shall be completed. 6 . Water that has seeped into the work site shall be pumped to an area to allow settling of fines before entering the stream or otherwise be contained to prevent any siltation from entering the stream. SEPA: MDNS, City of Renton, March 1994 REGIONAL HABITAT MANAGER - Phil Schneider (206) 775-1311, Ext . 107 PATROL - Suda 121 [P2 APPLICANT - WILDLIFE - READER - PATROL - HAB. MGR. - WRIA DIRECTOR DEPARTMENT OF FISHERIES C ( jl2�C�t WASHINGTON DEPARTMENT OF FISH AND WILDLIFE 600 CAPITOL WAY NORTH OLYMPIA,WASHINGTON 98501-1091 (360) 902-2534 This HVdraulic Project Approval pertains only to the provisions of the Fisheries Code (RCW 75.20). Additional authorization from other public agencies may be necessary for this project. GENERAL PROVISIONS This Hydraulic Project Approval shall be available on the job site at all times and all its provisions followed by the permittee and operator(s) performing the work. The person(s)to whom this Hydraulic Project Approval is issued may be held liable for any loss or damage to fish life or fish habitat which results from failure to comply with the provisions of this Hydraulic Project Approval. Failure to comply with the provisions of this Hydraulic Project Approval could result in a civil penalty of up to one hundred dollars per day or a gross misdemeanor charge, possibly punishable by fine and/or imprisonment. All Hydraulic Project Approvals issued pursuant to RCW 75.20.100 or 75.20.160 are subject to additional restrictions, conditions or revocation if the Department of Fish and Wildlife determines that new biological or physical information indicates the need for such action. The permittee has the right pursuant to Chapter 34.04 RCW to appeal such decisions. All Hydraulic Project Approvals issued pursuant to RCW 75.20.103 may be modified by the Department of Fish and Wildlife due to changed conditions after consultation with the permittee: PROVIDED HOWEVER,that such modifications shall be subject to appeal to the Hydraulic Appeals Board established in RCW 75.20.130. APPEALS -GENERAL INFORMATION IF YOU WISH TO APPEAL A DENIAL OF OR CONDITIONS PROVIDED IN A HYDRAULIC PROJECT APPROVAL, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS (WAC 220-110-340) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100, 75.20,103, 75.20,106, AND 75.20.160: A person who is aggrieved or adversely affected by the following Department actions may request an informal review of: (A) The denial or issuance of a Hydraulic Project Approval, or the conditions or provisions made part of a Hydraulic Project Approval; or (B) An order imposing civil penalties. It is recommended that an aggrieved party contact the Area Habitat Biologist and discuss the concerns. Most problems are resolved at this level, but if not, you may elevate your concerns to his/her supervisor. A request for an INFORMAL REVIEW shall be in WRITING to the Department of Fish and Wildlife, 600 Capitol Way North, Olympia, Washington 98501-1091 and shall be RECEIVED by the Department within 30-days of the denial or issuance of a Hydraulic Project Approval or receipt of an order imposing civil penalties. The 30-day time requirement may be stayed by the Department if negotiations are occurring between the aggrieved party and the Area Habitat Biologist and/or his/her supervisor. The Habitat Protection Services Division Manager or his/her designee shall conduct a review and recommend a decision to the Director or its designee. If you are not satisfied with the results of this informal appeal, a formal appeal may be filed. B. FORMAL APPEALS(WAC 220-110-350) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100 OR 75.20.106: A person who is aggrieved or adversely affected by the following Department actions may request an formal review of: (A) The denial or issuance of a Hydraulic Project Approval, or the conditions or provisions made part of a Hydraulic Project Approval; (B) An order imposing civil penalties; or (C) Any other "agency action" for which an adjudicative proceeding is required under the Administrative Procedure Act, Chapter 34.05 RCW. A request for a FORMAL APPEAL shall be in WRITING to the Department of Fish and Wildlife, 600 Capitol Way North, Olympia, Washington 98501-1091, shall be plainly labeled as "REQUEST FOR FORMAL APPEAL" and shall be RECEIVED DURING OFFICE HOURS by the Department within 30-days of the Department action that is being challenged. The time period for requesting a formal appeal is suspended during consideration of a timely informal appeal. If there has been an informal appeal, the deadline for requesting a formal appeal shall be within 30-days of the date of the Department's written decision in response to the informal appeal. C. FORMAL APPEALS OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 76.20.103 or 75.20.160: A person who is aggrieved or adversely affected by the denial or issuance of a Hydraulic Project Approval, or the conditions or provisions made part of a Hydraulic Project Approval may request a formal appeal. The request for FORMAL APPEAL shall be in WRITING to the Hydraulic Appeals Board per WAC 259-04 at Environmental Hearings Office, 4224 Sixth Avenue SE,Building Two - Rowe Six, Lacey, Washington 98504; telephone 360/459-6327. D. FAILURE TO APPEAL THE REQUIRED TIME PERIODS RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. IF THERE IS NO TIMELY REQUEST FOR AN APPEAL,THE DEPARTMENT ACTION SHALL BE FINAL AND UNAPPEALABLE. HYDRAULIC PROJECT APPROVAL R.C.W. 7 5 . 2 0 . 10 0 DEPARTMENT OF FISHERIES General Administration Bldg. s R.C.W. 75 . 20 . 103 Olympia, Washington 98504 April 9 , 1996 (206) 753-6650 DEPARTMENT OF FISHERIES (applicant should refer to this date in all correspondence) PAGE?..OF 2 PAGES 10 LAST NAME 18 CONTACT PHONE(S) 1 CONTROL NUMBER City of Renton (206) 277-5547 WRIA 00-95498-06 � 12 wATERSpringbrook Creek 9 09 . 0005 7 . If pumps are used to bypass the stream around the work area, the inlet nose shall be screened and the outlet positioned in a manner that will prevent streambed scouring. 8 . Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Bank rotection material shall be angular rock or other material of a sufyicient size to prevent its being washed away by water action. 10 . Overburden material resulting from this project shall be deposited so it will not reenter the water. 11 . Work shall stop if distressed or dead fish are observed in the bypass reach. The Washington Department of Fish and Wildlife (WDFW) shall be notified immediately. 12 . Prior to starting work, the contractor shall submit the erosion control plan to WDFW that includes the plan to bypass the work area during all phases of the project . 13 . At least one week prior to starting this project contact Philip Schneider, Area Habitat Biologist, at (206) 775-1311, extension 107 . 14 . Work shall conform to plans and specifications submitted with the Hydraulic Project application, including the revised planting plan that replaces sheet 7 of 16 of the original plans . 15 . At no time shall there be a complete blockage of flow and the new channel shall be filled in a manner that will minimize the flow impacts downstream. 16 . The bridge shall be placed and removed by equipment operating from the banks . 17 . Curbs or wheel guards shall be located in a manner that will control dirt , debris, etc . , from wasting into the water. 18 . Approach material shall be structurally stable and be composed of material that, if eroded into the water, will not be detrimental to fish life . 19 . Equipment shall operate from the bank during placement of riprap. LOCATION: I-405 and Oaksdale Ave SW in Renton. bk REV 10/16/88 WASHINGTON DEPARTMENT OF FISH AND WILDLIFE 600 CAPITOL WAY NORTH OLYMPIA,WASHINGTON 98501-1091 (360) 902-2534 This Hydraulic Project Approval pertains only to the provisions of the Fisheries Code (RCW 75.20). Additional authorization from other public agencies may be necessary for this project. GENERAL PROVISIONS This Hydraulic Project Approval shall be available on the job site at all times and all its provisions followed by the permittee and operator(s) performing the work. The person(s) to whom this Hydraulic Project Approval is issued may be held liable for any loss or damage to fish life or fish habitat which results from failure to comply with the provisions of this Hydraulic Project Approval. Failure to comply with the provisions of this Hydraulic Project Approval could result in a civil penalty of up to one hundred dollars per day or a gross misdemeanor charge, possibly punishable by fine and/or imprisonment. All Hydraulic Project Approvals issued pursuant to RCW 75.20.100 or 75.20.160 are subject to additional restrictions, conditions or revocation if the Department of Fish and Wildlife determines that new biological or physical information indicates the need for such action. The permittee has the right pursuant to Chapter 34.04 RCW to appeal such decisions. All Hydraulic Project Approvals issued pursuant to RCW 75.20.103 may be modified by the Department of Fish and Wildlife due to changed conditions after consultation with the permittee: PROVIDED HOWEVER,that such modifications shall be subject to appeal to the Hydraulic Appeals Board established in RCW 75.20.130. APPEALS -GENERAL INFORMATION IF YOU WISH TO APPEAL A DENIAL OF OR CONDITIONS PROVIDED IN A HYDRAULIC PROJECT APPROVAL, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS (WAC 220-110-340) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100, 75.20.103, 75.20,106, AND 75.20.160: A person who is aggrieved or adversely affected by the following Department actions may request an informal review of: (A) The denial or issuance of a Hydraulic Project Approval, or the conditions or provisions made part of a Hydraulic Project Approval; or (B) An order imposing civil penalties. It is recommended that an aggrieved party contact the Area Habitat Biologist and discuss the concerns. Most problems are resolved at this level, but if not, you may elevate your concerns to his/her supervisor. A request for an INFORMAL REVIEW shall be in WRITING to the Department of Fish and Wildlife, 600 Capitol Way North, Olympia, Washington 98501-1091 and shall be RECEIVED by the Department within 30-days of the denial or issuance of a Hydraulic Project Approval or receipt of an order imposing civil penalties. The 30-day time requirement may be stayed by the Department if negotiations are occurring between the aggrieved party and the Area Habitat Biologist and/or his/her supervisor. The Habitat Protection Services Division Manager or his/her designee shall conduct a review and recommend a decision to the Director or its designee. If you are not satisfied with the results of this informal appeal, a formal appeal may be filed. B. FORMAL APPEALS(WAC 220-110-350) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100 OR 75.20.106: A person who is aggrieved or adversely affected by the following Department actions may request an formal review of: (A) The denial or issuance of a Hydraulic Project Approval, or the conditions or provisions made part of a Hydraulic Project Approval; (B) An order imposing civil penalties; or (C) Any other "agency action" for which an adjudicative proceeding is required under the Administrative Procedure Act, Chapter 34.05 RCW. A request for a FORMAL APPEAL shall be in WRITING to the Department of Fish and Wildlife, 600 Capitol Way North, Olympia, Washington 98501-1091, shall be plainly labeled as "REQUEST FOR FORMAL APPEAL" and shall be RECEIVED DURING OFFICE HOURS by the Department within 30-days of the Department action that is being challenged. The time period for requesting a formal appeal is suspended during consideration of a timely informal appeal. If there has been an informal appeal, the deadline for requesting a formal appeal shall be within 30-days of the date of the Department's written decision in response to the informal appeal. C. FORMAL APPEALS OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.103 or 75.20.160: A person who is aggrieved or adversely affected by the denial or issuance of a Hydraulic Project Approval, or the conditions or provisions made part of a Hydraulic Project Approval may request a formal appeal. The request for FORMAL APPEAL shall be in WRITING to the Hydraulic Appeals Board per WAC 259-04 at Environmental Hearings Office,4224 Sixth Avenue SE,Building Two - Rowe Six, Lacey, Washington 98504; telephone 360/459-6327. D. FAILURE TO APPEAL THE REQUIRED TIME PERIODS RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. IF THERE IS NO TIMELY REQUEST FOR AN APPEAL,THE DEPARTMENT ACTION SHALL BE FINAL AND UNAPPEALABLE. THE CITY OF RENTON DEPARTMENT F O PLANNING/BUILDING/PUBLIC W RKS 0 FOURTH FLOOR ,<. 200 MILL AVENUE SOUTH r RENTON, WASHINGTON 98055-2189 FAX: 235-2541 Company: Phone: 775-- /31/ 1--/07 Fax: 2A -3 3 - J O66 From: � CGvr wc,40/ Company: Phone: Fax: Date: Lf/2 f� Pages including this cover page: Comments: Del 5Pi'1.fi�G g a IC �1�tr (,P— /-85, / A got 3�d0 3 �►o�lar , Z �- � e- r � a b' 7/b'1_ &-:Zll 001S/YoV, 9J OZ 1 99 FD Z d b' „8Z OF.J�k = p ct . •�N ui alp pL loop o o L -! 0O tit 1:,�► � � s vICI a al y'111A1�s VV V"VdlW o, �oVT< of IftSPN ALf TR A��. Si RUCri vRE go.cKFr�� wJ ToP501L ` PhIn1 2� T/-�1CK/Ul SS Lj& )f/ Loo5f /ZiP2AP — \ —f LEA 8,0 (ff/L C-JN57. SPEC . (�J) LoVER.E0 u'/ To Pso/L FAILURE C.0 PP cr ►nrrp ro r= aT E LE v. 't t T"o 3 E LOC^71 E D �� 7H� FiEc.r� sE�T�vN g-A s,± o 5� ), A u. DlSTUI�QED a2 Tvy°Sorl,�fl p,R-SAS TO 66 SL-ED.ED 1N A,00 A ofAc4Nr Tb T�-!� R�pAr2ED A R..Egs. CITY OF RENTON TELEPHONE/CONTACT RECORD Contacted: Phil Schneider, Washington Date of 10/1 1/95 Department of Fish and Wildlife Contact: Telephone No.: 1-206-775-131 1 X-107 Time: 8:30 am City of Renton Scott Woodbury File No.: P-1 Channel Contact: SW Grady Way to SW 16th St SUBJECT: Completion of In-stream Work Location: Telephone Items Discussed. I contacted Phil to discuss the project status and whether WDFW would issue yet another HPA extension, especially since the diversion at SW 16th Street had blown out last night. Phil said he had been assured by the contractor yesterday that the work within the stream would be completed by the current HPA expiration deadline of 10/19/95. However, if the contractor ended up needing an additional one,week extension to complete minor work on the edge of the channel, Phil said he would extend the HPA one more week, provided that all diversion pipe would be removed and the stream returned to a free flowing condition by 10/19/95. But now that the diversion was out, he questioned whether in fact the in-stream work could be completed by 10/19/95 as the contractor had indicated yesterday. I said that now that the diversion was out, I didn't think that the diversion pipe could be replaced, the remaining channel work completed, and the diversion removed by 10/19/95. It all depends on if and when stream flows will recede and stay low enough for the remaining in- stream work to be completed. This cannot be determined, but is dependent upon the weather. We then discussed what other options may be available aside from extending the HPA and gambling that stream flow conditions will allow completion of the work within the extension period. It was agreed that the only other option was for the channel to be stabilized for the winter and to complete the remaining work next summer. The HPA could still be extended, but the effective date for resuming work would be next June. I told Phil that we intended to review Monday next week whether or not the contractor will be able to finish the in-stream work by 10/19/95. The decision would be made at that time whether to winter the project and return next year. If the project will be wintered, Phil said that exposed in-stream areas would have to be stabilized for the winter with mulch or rock by 10/19/95. 1 said I would copy Phil on any communication with the contractor regarding completion this month or overwintering of the in-stream work. Recommended Follow-up: cc: Rod DenHerder Ron Straka 10/13/95 CITY OF RENTON Planning/Building/Public Works Department Earl Clymer, Mayor Gregg Zimmerman P.E.,Administrator October 4, 1995 Phil Schneider, Habitat Biologist Washington State Department of Fish and Wildlife 16018 Mill Creek Blvd Mill Creek, WA 98012 SUBJECT: P-1 CHANNEL - SW 16TH STREET TO SW GRADY WAY HPA NO. 01-95498-01 Dear Mr. Schneider: This letter is in follow-up to our September 21, 1995, meeting at the above-referenced project site regarding a potential change to a portion of the previously approved planting plan. Minutes for this meeting were sent to you earlier under separate cover. Based on discussions with Natural Resources Conservation Service (NRCS) specialists and Andy Levesque with King County, willow cuttings should be installed 4" (NRCS ) or from 6" to 1, (King County) above the ordinary water mark. Based on anticipated water levels in the new channel once the creek is diverted into it, a shallow earthen berm is required as shown in the attached sketch to elevate the cuttings 6" above the water. Similarly, the cuttings planned for the west side of the new low flow channel will be moved west and set slightly up the adjacent bank to achieve the needed 6" separation. The same number of willows as specified in the contract will be planted (440). If fewer willows are planted along the new low flow channel because of the change in planting locations discussed above, any extra willows will be used in disturbed areas along the west bank of the existing channel. As we also discussed, the new channel shelf adjacent to the existing Oakesdale Avenue retaining wall will be covered by an excelsior blanket, but will not be seeded because water will likely cover the shelf and make seeding unfeasible. Thank you for your assistance on this project. If you have any questions, please contact me at 206-277-5547. Sincerely, Scott Woodbury, P oject Manager Surface Water Utility H:DOCS:95-840:SW:ps Attachments CC: Rod DenHerder Ron Straka 200 Mill Avenue South - Renton,Washington 98055 - -- - _ Low11ow P_I CHaNA?Z 01 NNC7 (`APPRO GROUND SURFACE E XC VA LION, P-I CNAN/JE'L, I ' CCMWCW 00. J G..,/ -45 VAR/ f J 0, VAR/ES 7..5, 6 0' 6.0' A I ARIES \ 11- in -i .1 ER SOW COW7RIX�IA-" I R/ffRAP `�' £ AVAAON ANO /I P -M£MBRAAK M/7S -1 . 1 K It SO' ORA/NF7CC Pw NE f7L 7ER 1�8,91C I (see she 16) l 7ER FABR/C BE7W PV ' AND F,AR7NF7LL A >S OF CONTACT —J5 —30 —25 —20 '-15 —10 —5 /It0 5 10 15 20 25 .30 TYPICAL CROSS SECTION S A L-5Q PLA"-, v1d-w LLOICJ rLAWTIHC Designed R1)«- Date UNITED STATES DEPARTMENT OF AGRICULTURE Checked Date__ SOIL CONSERVATION SERVICE Approved Date WASHINGTON Sheet of I _ SR If/N sr. I 1 •� T i d R T yy \ \ N� s ® � o b Z FISH HABITAT AND PLANTING PLAN --sm" P-1 CHANNEL STA. 670*76 TO 660t26.J7 a°A"AS d 6 CAsr sroc oemv,a�nv wA�evsim o.rz— I— �V ly .Yevc LYY/MlY w SY/NClCWD ` nu U.S. DEPARTMENT OF AGRICULTURE SOIL CONSERVATION SERVICE a�ago yrz1/°J THE CITY OF RENTON nss M D E PA RT ENTF O PLANNING/BUILDING/PUBLIC WORKS FOURTH FLOOR 200 MILL AVENUE SOUTH RENTON, WASHINGTON 98055-2189 FAX: 235-2541 k To: Company: Phone: Fax: 20C- 33 - 1066 From:' �r w aG,0,94't Company: Phone: 27 7 - tF'�`! 7 AkA <-4wf 26L) Fax: Date: Pages including this cover page: Comments: of ('at./ 4 �sc�rP�r-�r- aj s„e,v, a,v6As7 vj Pam• 206-03e-0440 GOLF LANDSCAPING INC 206 P03 OCT 02 '95 15:07 a ©� LANTDPING,. COO ,INC call.•,,, ;h'I k7114 MII IfA?Y IM,�%J7;C•„IIfI INC^:',YV �;ill liq all iM Y:I ii.i�;',"t/AIIFijiJ WA•:Igf,i,I:IrIv,u,,I October 2, 1995 Washington State Dept. of Fisheries & Wildlife Habital Program 600 Capitol Way North Olympia, Wa 98501-1091 Attention: Phil Schneider RE: P-1 Channel- Lastside Greenriver Watershed Dear Phil, The following is a description of how we plan to re-enter the creek to the newly constructed low flow channel. After all work is completed in the low flow channel from North of 16th street bridge to the Grady Way box culverts we would like to divert the creek to the East side of the 16th street bridge. We will first rock the new creek bed as close to the existing running creek as we can, i.e. to the toe of existing dam. We will then dig out for a 4' diameter culvert from the end of the finished rip rap to 12-15 south of the end of the rip rap. The south end of the 4 foot pipe would be 10, east of the existing creek, giving enough bank to hold the creek back until it is rerouted into the 4' pipe using a dam on the west side of the creek. The bank between the creek and culvert would be removed while simultaneously building a sand bag dam moving the water into the south end of the culvert. We would also construct a sand bag dam between the North end of the culvert and the temporary creek bank now being used for dirversion. THis dam will not be necessary if the silt is removed down stream of Grady Way and the creek is allowed to flow normal. There will be a slight amount of silt entering the stream but it won't hold a candle to what we witnessed as " Normal" creek reaction to the August 1.6th rain. An alarming discrepancy between the drawings and actual field conditions,mainly the elevation of the down stream bottom where it continues North from the Grady Way box culverts has caused us much delay in fighting the head water during construction so we are asking for permission to work in the creek channel beyond the October 15th date previously requested by the City of Renton. We continue to pursue this job with diligence and hope we will be out of the channel as soon as humanly possible. Your consideration of this request is appreciated. Thank you. Si erel 77 F ed Leens kra--1�6 206-030-0443 GOLF LANDSCAPING INC 206 PO4 OCT 02 '95 15:07 DA. LX�UNO.4t�- eX s S? i,..3G t2 ETA N ,tip C� W/4 L.'-- v C-xi S-r►�c� W 1 I.1 W A v n WA E-X I S"TtA/C L�,A2t/f lc;AiiL SAC, a 'DAwi S.4.�v a�9 ,2A.•,2 S To BAC< Wq5•�/ NTS A ( Kis TA �O� �' � cut-VE2T' 43 BACCWISH DAwrS C° SAQD 3A y tZ1.P \ZA P DAm DtVe-TY7s STZi`Am 1Q to G vc2-T D S Wl4 C.L (�O!I(r 0 Iv 0 F (fR R T PJ ba ►'h -V o:• A L L o Lj w r-.--T E rZ —rc� 1V T G(t-- G lJ L- \1 L tLT HYDRAULIC PROJECT: APPROVAL OC� R.C.W. 75 .20 . 100 DEPARTMENT OF FISHERIES 2)/GeneraL Administration Bldg. R.C.W. 75.20. 103 (./r�, OLympia, Washington 98504 28b September 3995 � DEPARTMENT OF FISHERIES Se� p � �•�. r„ (206) 753-6650 (appLicant should refer to this date in all cor 69J01}der#) q1V PAGE 1 OF 2 PAGES 55 10 LAST NAME FIRST 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 5:100-95498-04 19 STREET OR RURAL ROUTE ® 9❑ WRIA 200 Mill Ave. S, 4th Floor, ATTN: S. Woodbury 09 . 0005 CITY STATE ZIP 14 17 Renton WA 98055 12 ATER TRIBUTARY TO . 11 TYPE O PROJECT Springbrook Creek Green River Channef Change/ 13 UARTER SECTION TOWNSHIP RANGE(E-W) COUNTY SECTION NE 24 23N 04E King Bank Protection/ ————————————————————————————— —————————— Outfall TIME LIMITATIONS: 5❑THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY Immediately October 19, 1995 THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. SEE 1)APORTANT GENERAL PROVISIONS ON REVERSE SIDE OF APPROVAI, NOTE: This Hydraulic Project Approval (HPA) is a renewal of the original Hydraulic Project Approval (HPA) issued on April 29, 1994 . This HPA is in response o a verbal request by Scott Woodbury, of City of Renton, on September 18, 1995, and it supersedes all previous HPAs and modifications for this project. PROJECT Reconstruct and divert 215-feet of new channel to existing DESCRIPTION: I-405 culvert. Also includes 50-feet of new channel north of I-405 box culverts, channel widening, bank protection, habitat structures, and revegetation. 1. A temporary by-pass or flume shall be in place prior to commencement of work. 2 . A sandbag revetment or similar device shall be installed at the inlet to divert the entire flow through the culvert or flume. 3 . A sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area. 4 . Culvert or flume shall be of sufficient size to pass flows and debris occurring during the project. 5. Prior to releasing the water flow to the project area, all work within the new channel shall be completed. SEPA: MDNS, City of Renton, March 1994 REGIONAL HABITAT MANAGER - Phil Schneider (206) 775-1311, Ext. 107 PATROL - Suda 121 [P2] APPLICANT - WILDLIFE - READER - PATROL - HAS. MGR. - WRIA DEPARTMENT OF FISHERIES DIRECTOR J THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE Al ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK THE PERSON(S) TO WHOM THIS APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISHLIFE OIL FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS, OR REVOCATION IF THE DEPARTMENT OF FISHERIES OR DEPARTMENT OF WILDLIFE DETERMINE THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE _ PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34.04 RCW TO APPEAL SUCH DECISIONS. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.103 MAY BE MODi IED BY THE DEPARTMENT OF FISHERIES OR DEPARTMENT OF WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE: PROVIDED HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75.20.130. THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES AND WILDLIFE CODES. ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: - AN INFORMAL APPEAL (WAC 220-110-340) CONSISTS OF CONTACTING THE REGIONAL HABITAT MANAGER AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL, 13UT IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THF? CHIEF OF THE HABITAT MANAGEMENT DIVISION IN OLYMPIA. THE HABITAT MANAGEMENT DIVISION CHIEF'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOU ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAT. APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER HPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSIONS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPROVAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350). 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN HPA ASSOCIATED WITH IRRIGATION OR STOCK- WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE HYDRAULIC APPEALS BOARD PER WAC 259-04. THE MAILING ADDRESS OF THE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO -ROWE SIX, LACEY, WASIIINGF'ON 98504; TELEPHONE 206/459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEALING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. HYDRAULIC PROJECT APPROVAL R.C.W. 75 . 20 . 100 DEPARTMENT OF FISHERIES General Administration Bldg. R.C.W. 75 .20. 103 Otympia, Washington 98504 September 28, 1995 (206) 753-6650 DEPARTMENT OF FISHERIES (applicant should refer to this date in att correspondence) PAGE 10F 2 PAGES 10 LAST NAME 18 CONTACT PHONE(S) 1 CONTROL NUMBER City of Renton (206) 277-5547 00-95498-04 12 WATER SpringbrookCreek 91WRIA 09. 0005 6. Water that has seeped into the work site shall be pumped to an area to allow settlin of fines before enterin the stream, or otherwise contained so as L prevent any siltation Yrom entering the stream. 7 . If pumps are used to by-pass the stream around the work area, the inlet hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. 8. Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Bank rotection material shall be, angular rock or other material of a sufficient size to prevent its being washed away by water action. 10. Overburden material resulting from this project shall be deposited so it will not re-enter the water. 11. Work shall stop if distressed or dead fish are observed in the %y-ppass reach. The Washington,Department of Fish and Wildlife (WDFW) shall be notified immediately. 12 . Prior to starting work the contractor shall submit the erosion control plan to WDFW includes the plan to by-pass the work area during all phases of the project. 13 . At least one (1) week prior to starting this project contact Philip Schneider, Area Habitrat Biologist, at (206) 775-1311, Ext. 107 . 14. Work shall conform to plans and sppecifications submitted with the Hydraulic Project application including the revised planting plan that replaces sheet ' of 16 of the original plans. 15. At no time shall there be a complete blockage of flow and the new channel shall filled in a manner that will minimize the flow impacts downstream. 16. The bridge shall be placed and removed by equipment operating from the banks. 17 . Curbs or wheel guards shall be located in a manner that will control dirt, debris, etc. , from wasting into the water. 18. Approach material shall be structurally stable and be composed of material that, if eroded into the water, will not be detrimental to fish life. LOCATION: I-405 and Oaksdale Ave. SW in Renton. cg REV 10/16/88 ♦ Y THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK THE PERSON(S) TO WHOM THIS APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISHLIFE OFF FISH HABITAT WHICH RESULTS_ FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS, OR REVOCATION IF THE DEPARTMENT OF FISHERIES OR DEPARTMENT OF WILDLIFE DETERMINE THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34.04 RCW TO APPEAL SUCH - DECISIONS. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.103 MAY BE MODIFIED BY THE DEPARTMENT OF FISHERIES OR DEPARTMENT OF WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE: PROVIDED HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75.20.130. THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES AND WILDLIFE CODES. ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THI?RE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-110-340) CONSISTS OF CONTACTING THE REGIONAL HABITAT MANAGER AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL; BUT IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE, CHIEF OF THE HABITAT MANAGEMENT DIVISION IN OLYMPIA. THE HABITAT MANAGEMENT DIVISION CHIEF'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOU ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAT. APPEALS: I) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER HPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSIONS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPROVAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350). 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN HPA ASSOCIATED WITH IRRIGATION OR STOCK- WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE HYDRAULIC APPEALS BOARD PER WAC 259-04. THE MAILING ADDRESS OF THE APPEALS BOARD is: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO -ROWE SIX, LACEY, WASIIING'rON 98504; TELEPHONE 206/459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEALING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. ,N HYDRAULIC PROJECT APPROVAL ~' DEPARTMENT OF FISHERIES R.C.W. 7 5 . 2 0 . 10 0 General Administration Bldg. R.C.W. 75 .20 . 103 Olympia, Washington 98504 DEPARTMENT OF FISHERIES 4❑ August 29, 1995 (206) 753-6650 (applicant should refer to this date in all correspondence) PAGE 1 OF 2 PAGES 10 LAST NAME FIRST 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 00-95498-04 19 STREET OR RURAL ROUTE 200 Mill Ave . S, 4th Floor, ATTN: S . Woodbury ® 09 . 0005 CITY STATE ZIP 14 17 Renton WA 98055 1z ATERSpringbrook Creek TGreen River 11 Chann PChange__ 13 UARTER SECTION TOWNSHIP RANGE(E-W) COUNTY SECTION NE 24 23N 04E King ----------------------------- ---------- TIME LIMITATIONS: 5❑THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY Immediately October 1, 1995 THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. SEE IMPORTANT GENERAL PROVISIONS ON REVERSE SIDE OF APPROVAL. NOTE: This Hydraulic Protect Approval (HPA) is a renewal of the on final HPA issued on April 24, 1994, last modified on June 12 , 1995 This HPA is in response to a vebal request by Scott Woodbury, of City of Renton Public Works, on August 28, 1995, and it supersedes all previous HPAs and modifications for this project . This HPA is written to reconstruct and divert 215-feet o channel to an existing I-405 culvert . It also includes 50-feet of new channel north of I-405 box culverts, channel widening, bank protection, habitat structures, and revegetation. 1 . A temporary bypass or flume shall be in place prior to commencement of work. 2 . A sandbag revetment or similar device shall be installed at the inlet to divert the entire flow through the culvert or flume . 3 . A sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area. 4 . The culvert or flume shall be of sufficient size to pass flows and debris occurring during the project . 5 . Prior to releasing the water flow to the project area, all work within the new channel shall be completed. 6 . Water that has seeped into the work site shall be pumped to an area SEPA: MDNS, City of Renton, March 1994 REGIONAL HABITAT MANAGER - Phil Schneider (206) 775-1311, Ext . 107 PATROL - Suda 121 [P2 APPLICANT - WILDLIFE - READER - PATROL - HAB. MGR. - WRIA DEPARTMENT OF FISHERIES DIRECTOR HYDRAULIC PROJECT APPROVAL R.C.W. 75 . 20 . 100 DEPARTMENT OF FISHERIES R.C.W. 75 .20 . 103 General Administration Bldg. Olympia, Washington 98504 DEPARTMENT OF FISHERIES 4❑ August 29, 1995 (206) 753-6650 (applicant should refer to this date in all correspondence) PAGE..2 OF 2 PAGES 10 LAST NAME 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 00-95498-04 12 WATER SpringbrookCreek 9�WRIA 09 . 0005 to allow settling of fines before entering the stream, or otherwise contained so as to prevent any siltation from entering the stream. 7 . If pumps are used to bypass the stream around the work area, the inlet hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. 8 . Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Bank rotection material shall be, angular rock or other material of a sufyicient size to prevent its being washed away by water action. 10 . Overburden material resulting from this project shall be deposited so as not to reenter the water. 11 . Work shall stop if distressed or dead fish are observed in the bypass reach. The Washington Department of Fish and Wildlife (WDFW) shall be notified immediately. 12 . Prior to starting work the contractor shall submit the erosion control plan to WDFW, that includes the plan to bypass the work area during all phases of the project . 13 . At least one (1) week prior to starting this project contact Philip Schneider, Area Habitrat Biologist, at (206) 775-1311, extension 107 . 14 . Work shall conform to plans and specifications submitted with the Hydraulic Project application including the revised planting plan that replaces sheet 7 of 16 of the original plans . 15 . At no time shall there be a complete blockage of flow and the new channel shall filled in a manner that will minimize the flow impacts downstream. 16 . The bridge shall be placed and removed by equipment operating from the banks . 17 . Curbs or wheel guards shall be located in a manner that will control dirt, debris, etc . , from wasting into the water. 18 . Approach material shall be structurally stable and be composed of material that, if eroded into the water, will not be detrimental to fish life . LOCATION: I-405 and Oaksdale Ave . SW in Renton. Attachment : REV 10/16/88 Attachment (00-95498-04) THIS HYDRAULIC PROJECT APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. THE PERSON(S) TO WHOM THIS HYDRAULIC PROJECT APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE AND/OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 . 20 . 100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS OR REVOCATION IF THE DEPARTMENT OF FISHERIES OR WILDLIFE DETERMINE THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34 . 04 RCW TO APPEAL SUCH DECISIONS . ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 . 20 . 103 MAY BE MODIFIED BY THE DEPARTMENT OF FISHERIES OR WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE : PROVIDED HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75 . 20 . 130 . THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES CODE (RCW 75 . 20) . ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-110-340) CONSISTS OF CONTACTING THE REGIONAL HABITAT MANAGER AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL, BUT IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE CHIEF OF THE HABITAT MANAGEMENT DIVISION IN OLYMPIA. THE HABITAT MANAGEMENT DIVISION CHIEF'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOUR ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAL APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER HPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSION, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPROVAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350) . 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN HPA ASSOCIATED WITH IRRIGATION OR STOCK- WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE HYDRAULIC APPEALS BOARD PER WAC 259-04. THE MAILING ADDRESS OF THE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO - ROWE SIX, LACEY, WASHINGTON 98504; TELEPHONE 206/459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEALING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. THE CITY OF RENTON DEPARTMENT OFF PLANNNG/I BUILDING/PUBLIC WORKS FOURTH FLOOR 200 MILL AVENUE SOUTH RENTON, WASHINGTON 98055-2189 >u FAX: 235-2541 �- i:ln rwii�{ Aj Company: Phone: Fax: �? 3 From: 5(4r ujco o3okt Company: Phone:'�.'� Fax: Date: 7//7/'YS Pages including this cover page: J J Comments: P 1 - f AX �- NPR N� . / �gsY98-� G�c.F� 5� •►, rto►c Fad STPAn,� ,ems fW'1,9" cALA- 0 A, Pd)0v( k��!►� HYDRAULIC PROJ]igl.�- � i APPROVAL t` R.C.W. 75 . 2O . 100 JU1� `I DEPARTMENT OF FISHERIES R.C.W. 75 .20 . 103 General Administration Bldg. Olympia, Washington 98504 DEPARTMENT OF FISHERIES 4❑ June 12, 1995 (206) 753-6650 (applicant should refer to this date in all correspondence) PAGE 1 OF 3 PAGES 10 LAST NAME FIRST 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 00-95498-03 19 STREET OR RURAL ROUTE 8 F WRIA 200 Mill Ave . S, 4th Floor, ATTN: S . Woodbury 09 . 0005 CITY STATE ZIP 14 17 Renton WA 98055 12 ATER TRIBUTARY TO 11 TYPE 0 PROJECT Springbrook Creek Green River Channef_Chang_e/ _ 13 UARTER SECTION TOWNSHIP RANGE(E-W) COUNTY SECTION NE 24 23N 04E King Bank Protection ————————————————————————————— —————————— Outfall TIME LIMITATIONS: 5❑THIS PROJECT MAY BEGIN ©AND MUST BE COMPLETED BY Immediately September 15, 1995 THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. SEE IMPORTANT GENERAL PROVISIONS ON REVERSE SIDE OF APPROVA NOTE : This Hydraulic Project Approval (HPA) is a modification of the original HPA issued on April 25, , 1995 . The modification consists of the addition of provisions for a temporar flat car bridge and it ssupersedws all previous HPA' s and modifications for this project . PROJECT DESCRIPTION: Reconstruct and divert 215-feet of new channel to existing I-405 culvert . Also includes 50-feet of new channel north of I-405 box culverts, channel widening, .bank protection, habitat structures, and revegetation. 1 . A temporary bypass or flume shall be in place prior to commencement of work. 2 . A sandbag revetment or similar device shall be installed at the inlet to divert the entire flow through the culvert or flume . 3 . A sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area. 4 . Culvert or flume shall be of sufficient size to pass flows and debris occurring during the project . 5 . Prior to releasing the water flow to the project area, all work within the new channel shall be completed. SEPA: MDNS, City of Renton, March 1994 REGIONAL HABITAT MANAGER - Phil Schneider (206) 775-1311, Ext . 107 PATROL - Suh 121 [P2] APPLICANT - WILDLIFE - READER - PATROL - HAB. MGR. - WRIA / DEPARTMENT OF FISHERIES �`%�c� / -� —h ` DIRECTOR HYDRAULIC PROJECT . APPROVAL DEPARTMENT OF FISHERIES R.C.W. 75 . 20 . 100 R.C.W. 75 . 20 . 103 General Administration Bldg. Olympia, Washington 98504 DEPARTMENT OF FISHERIES 0 June 12, 1995 (206) 753-6650 (applicant should refer to this date in all correspondence) PAGE a OF 3 PAGES 10 LAST NAME 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 1 00-95498-03 12 WATER SpringbrookCreek 191WRIA 09 . 0005 6 . Water that has seeped into the work site shall be pumped to an area to allow settling of fines before entering the stream, or otherwise contained so as to prevent any siltationrom entering the stream. 7 . If pumps are used to bypass the stream around the work area, the inlet hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. 8 . Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Bank rotection material shall be, angular rock or other material of a sufficient size to prevent its being washed away by water action. 10 . Overburden material resulting from this project shall be deposited so as not to reenter the water. 11 . Work shall stop if distressed or dead fish are observed in the bypass reach. The Washington Department of Fish and Wildlife (WDFW) shall be notified immediately. 12 . Prior to starting work the contractor shall submit the erosion control plan to WDFW, that includes the plan to bypass the work area during ail phases of the project . 13 . At least one (1) week prior to starting this pproject contact Philip Schneider, Area Habitrat Biologist, at (206) 775-1311, extension 107 . 14 . Work shall conform to plans and specifications submitted with the Hydraulic Project application including the revised planting plan that replaces sheet 7 of 16 of the original plans . 15 . At no time shall there be a complete blockage of flow and the new channel shall filled in a manner that will minimize the flow impacts downstream. 16 . The bridge shall be placed and removed by equipment operating from the banks . 17 . Curbs or wheel guards shall be located in a manner that will control dirt, debris, etc . , from wasting into the water. 18 . Approach material shall be structurally stable and be composed of material that, if eroded into the water, will not be detrimental to fish life . REV 10/16/88 HYDRAULIC PROJECT APPROVAL DEPARTMENT OF FISHERIES T° R.C.W. 75 . 20 . 100 General Administration Bldg. R.C.W. 75 .20 . 103 Olympia, Washington 98504 DEPARTMENT OF FISHERIES F41 June 12 , 1995 (206) 753-6650 (applicant should refer to this date in all correspondence) PAGE j OF 3 PAGES 10 LAST NAME 18 CONTACT PHONE(S) CONTROL NUMBER City of Renton (206) 277-5547 00-95498-03 12 WATER SpringbrookCreek aWRIA 09 . 0005 LOCATION: I-405 and Oaksdale Ave . SW in Renton. Attachment : REV 10/16/88 Attachment (00-95498-03) THIS HYDRAULIC PROJECT APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. THE PERSON(S) TO WHOM THIS HYDRAULIC PROJECT APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS HYDRAULIC PROJECT APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE AND/OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 . 20 . 100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS OR REVOCATION IF THE DEPARTMENT OF FISHERIES OR WILDLIFE DETERMINE THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34 . 04 RCW TO APPEAL SUCH DECISIONS . ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75 . 20 . 103 MAY BE MODIFIED BY THE DEPARTMENT OF FISHERIES OR WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE : PROVIDED HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75 . 20 . 130 . THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES CODE (RCW 75 . 20) . ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-1.10-340) CONSISTS OF CONTACTING THE REGIONAL HABITAT MANAGER AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL, BUT IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE CHIEF OF THE HABITAT MANAGEMENT DIVISION IN OLYMPIA. THE HABITAT MANAGEMENT DIVISION CHIEF'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOUR ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAL APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER HPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSION, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPROVAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350) . 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN HPA ASSOCIATED WITH IRRIGATION OR STOCK- WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE HYDRAULIC APPEALS BOARD PER WAC 259-04. THE MAILING ADDRESS OF THE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO - ROWE SIX, LACEY, WASHINGTON 98504; TELEPHONE 206/459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEALING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. CITY OF RENTON "LL Planning/Building/Public Works Department Earl Clymer,Mayor Gregg Zimmerman P.E.,Administrator t'A ' x rRANSMITTAL MEMO I# of pzges FROM June 2, 1995 Phil Schneider, Habitat Biologist Dept of Fish and Wildlife P - 16018 Mill Creek Blvd GrP,7 13 pi ;�►�. . Mill Creek WA 98012 SUBJECT: P-1 CHANNEL PROJECT - SW 16TH STREET TO SW GRADY WAY HPA NO. 01-95498-01 Dear Mr. Schneider: Attached is a copy of a June 1, 1995 letter from Golf Landscaping & Construction regarding their plans for the stream bypass. Please review the letter as to whether it adequately addresses your May 24, 1995 comments on the stream bypass. Because of the limited construction season for work within the stream and the fast approaching start date for work within the stream of June 15, 1995, as specified in the HPA, your assistance in providing comments as soon as possible is appreciated. Please fax your comments or approval to me at 235-2541. Since you will be unable to our first weekly meeting with the contractor on the construction site this next week on Tuesday, June 6, 1995 at 1 p.m., the contractor will be contacting you to arrange an alternate time. If you have any questions or if you plan to attend the meeting next week, please contact me at 277- 5547. Sincerely, 1 Scott Woodbury, P.E.7Pject Manager Surface Water Utility H:DOCS:95-:486!:SW cc: Rod DenHerder enclosure 200 Mill Avenue South - Renton, Washington 98055 0 This paper contains 50%recycled material,25%post consumer 206-838-8448 GOLF LANDSCAPING INC 621 P02 JUN 01 '�Jb by:25 v o UNtNo& & CQ ,iNC I cR_xri :nta) guilt.W HARY iA w�`.(xllft ; iAK (0N)HOt 4`1141 ixr��w;�rwn H➢u KdJ WA!�NtX,li�i'1FpY�l June 1, 1995 Mr_ Scott Woodbury , 3ur face dater Utilities City of Renton Municipal Building 200 Mill Avenue South Renton, WA 98055 Subject : P-1 Channel Construction Contract CAG-94-11"1 Stream Bypass Dear Scott.: I Fabric will be held in place using a ballast of quarry spalls. i A container will be kept on site to transport captured fish encountered to an approved location . The stream bypas6 will function as an open channel as much as possible. on some occasions the entire stream channel width will be under construction and the channel will then be piped through that area. until pertinent work is completed. The problem of dealing with turbid water is not real clear . While the existing stream channel is filled with murky water , it is not our intent to further- degradate the water purity. Quarry spall outlets will be placed at pipe discharge points and water condition will be monitored to protect existing stream channel _ Should a power outage occur a backup generator is available. We do not anticipate disruption in power service to be a problem. Final field location of the temporary bridge will be made after berries are mowed oh the west creek bank. Sincerel , Stein Hauge project Controller MAY 24 '95 01:37PM WDFW REG. 4 Jr`ol 5�-�/S p. 1 e •7' CURT SMITCH Director , r y STATE OF WASHINGTON DEPARTMENT OF WILDLIFE nUIK `tilt C .ex eltid.. '-fill C c^.r,. W-k ''.s01., 791. , TELEFAX TRANSMITTAL SHEET DATE: TO: FROM: t,I C C . V- FAX NUMBER: 2061338-1066 — Mill Creek Number of Pages (including this sheet) I NOTES: a�n c Wqr Y �ri G C- v ? • d �S T c� W.) �ot'J Acw,,� wA\vo l J 1 IF MATERIAL IS UNREADABLE R INCOMPLETE, PLEASE PHONE 206/775-1311. CITY OF RENTON TELEPHONE/CONTACT RECORD Contacted: Phil Schneider Date of 5/24/95 WDFW Contact: Telephone No.: 775-131 1 X-107 Time: 8:20 am City of Renton Scott Woodbury File No.: P-1 Channel, WDFW Contact: SUBJECT: Comments to Golf's Submittals Location: Telephone Items Discussed. I left a message on Phil's voice mail asking if he will be returning comments on Golf's dewatering and stream bypass plan submittals. I said that if I don't hear from him today, I will assume that he has no comments. Recommended Follow-up: None. cc: Rod DenHerder, NRCS 05/24/95 „T&� CITY OF RENTON '- IN Planning/Building/Public Works Department Earl Clymer,Mayor Gregg Zimmerman P.E.,Administrator May 4, 1995 Phil Schneider, Habitat Biologist Dept of Fish and Wildlife 16018 Mill Creek Blvd Mill Creek WA 98012 SUBJECT: P-1 CHANNEL PROJECT - SW 16TH STREET TO SW GRADY WAY HPA NO. 01-95498-01 Dear Mr. Schneider: Attached for review are copies of the following documents submitted for the above-referenced project by Golf Landscaping & Construction: • Dewatering Plan dated May 1, 1995 (4 pages); • Stream Bypass Plan (4 pages, no date); • Erosion Control Plan (1 page, no date); • Construction Mitigation Plan dated May 1, 1995 (1 page); • Phone List (1 page, no date). Please fill in an emergency contact number and return. The contractor is hoping to start work this month and continue into September 1995. Work within the stream channel may only occur from June 15, 1995 to September 15, 1995 in accordance with the HPA permit conditions. Please call me at 206-277-5547 to let me know when you will be able to return comments. Because of the limited construction season for work within the stream, your assistance in providing comments as soon as possible is appreciated. Sincerely, bizvkv Scott Woodbury, P.E , Project Manager Surface Water Utility H:DOCS:95-392!:SW cc: Rod DenHerder enclosures 200 Mill Avenue South - Renton,Washington 98055 MThis oaoer contains 50%recvcled material,25%oost consumer THE CITY OF RENTON DEPARTMENT OF PLANNING/BUILDING/PUBLIC WORKS FOURTH FLOOR 200 MILL AVENUE SOUTH RENTON, WASHINGTON 98055-2189 FAX: 235-2541 To: Fred Leenstra, Golf Landscaping, Inc Rod DenHerder, NRCS Brant Dallas, NRCS Sam Richard, WSDOT Frank Forrest, U.S. West Karen Sharp, Puget Power Bill Gebenini, TCI Tom Ling, WNG Mary Malcolm, Metro Eric Davidson,-M-etro Phil Schneider, WDFW Mike Nanzovich, King County Andy Levesque, King County Jack Nelson, Drainage District No. 1 Mary Kautz, WDOE Rick Ford, Boeing Jim Douma, Group Health Virgil Fox, Longacres Joint Venture Lon Delma, Puget Western/Bridge Group From: Scott Woodbury, Project Manager Phone: 206-277-5547 Fax: 206-235-2541 Date: 02/24/95 Pages including this page: 7 Comments: Attached are the following documents: • Invitation to March 2, 1995 Preconstruction Conference (1 page); • Agenda for March 2, 1995 Preconstruction Conference (3 pages); • Project Vicinity and Site Plan Maps (2 pages). If you didn't not receive all of the pages of the fax or if you have any questions, please call me at 206-277-5547. Thank you. tiTATF O� O � � 6 � S 1881 State of Washington DEPARTMENT OF FISH AND WILDLIFE Mailing Address: 600 Capitol Way N, Olympia, WA 98501-1091 - (206)902-2200;TDD (206)902-2207 Main Office Location: Natural Resources Building, 1111 Washington Street SE, Olympia, WA August 9, 1994 o IT City of Renton �< 11 ATTENTION: Scott Woodbury 200 Mill Avenue South AUG 121994 4th Floor Renton, Washington 98055 CITY OF RENTON Engineering Dept, Dear Mr. Woodbury: RE: Hydraulic Project Approval, April 29, 1994, Channel Change, Bank Proection, Outfall, Springbrook Creek, King County, WRIA 09, Control Number 01-95498-02 A representative of this department has reviewed the referenced Hydraulic Project Approval, and the time limitations shall be changed to: June 15, 1995 to September 15, 1995 All other provisions of the original approval and amendments shall remain as written, and this letter shall be attached and on the job site at all times. Sincerely, obert Turner Director RT:ch cc: Jim Suda HYDRAULIC PROJECT DEPARTMENT OF WILDLIFE APPROVAL 600 CAPITOL WAY N. OLYMPIA WASHINGTON 98501-1091 (R.C.W. 7 5 . 2 0 . 10 0) (206) 753-5897 (R.C.W. 7 5. 2 0. 10 3 ) 0 April 29, 1994 (applicant should refer to this date in all correspondence) PAGE 1 OF 2 PAGES 10 APPLICANT NAME 18 CONTACTPHONE(S) 1 CONTROL NUMBER Renton City of 206 277-5547 01-95498-01 19 STREET OR RURAL ROUTE 90 WRIA 200 Mill Ave. S. , 4th Floor, Attn: Scott Woodbury 09 CITY STATE ZIP Renton WA 98055 14 76 15 06 12 WATER TRIBUTARY TO 11 TYPE OF PROJECT Springbrook Creek Green River Channel Change —— 13 QUARTER SECTION TOWNSHIP RANGE(E-W) COUNTY SECTION 24 23N 04E King Bank Protection ----------------------------- —— —— ——— —— — Outfall TIME LIMITATIONS: 5❑THIS PROJECT MAY BEGIN F6]AND MUST BE COMPLETED BY June 15, 1994 September 15, 1994 THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK. SEE IMPORTANT GENERAL PROVISIONS ON REVERSE SIDE THAT ARE ALSO PART OF THIS APPROVAL. Project Description: Reconstruct and divert 215 feet of new channel to existing I-405 culvert; also includes 50-feet of new channel north of I-405, box culverts channel widening, bank protection, habitat structures, and revege�ation. 1. A temporary bypass or flume shall be in place prior to commence- ment of work. 2 . A sandbag revetment or similar device shall be installed at the inlet to divert the entire flow through the culvert or flume. 3 . A sandbag revetment or similar device shall be installed at the downstream end of the culvert or flume to prevent backwater from entering the work area. 4 . Culvert or flume shall be of sufficient size to pass flows and debris occurring during the project. 5. Prior to releasing the water flow to the project area, all work within the new channel shall be completed. 6 . Water that has seeped into the work site shall be pumped to an area to allow settling of fines before entering the stream, or otherwise contained so as to prevent any siltation from entering the stream. SEPA: MDNS, City of Renton, March 1994 HABITAT BIOLOGIST: Phil Schneider (206) 775-1311, ext. 107 AGENT:Jim Suda P2 MAY S 1994 APPLICANT - FISHERIES - AGENT - INVESTIGATOR - REGION - OLYMPIA: IT 7- DEPARTMENT OF WILDLIFE r p•D TOR THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK THE PERSON(S) TO WHOM THIS APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS, OR REVOCATION IF THE DEPARTMENT OF FISH AND WILDLIFE DETERMINES THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34.04 RCW TO APPEAL SUCH DECISIONS. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.103 MAY BE MODIFIED BY THE DEPARTMENT OF FISH AND WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE: PROVIDED, HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75.20. 130. THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES AND WILDLIFE CODES. ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. ---------------------------------------------------- APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-110-340) CONSISTS OF CONTACTING THE AREA HABITAT BIOLOGIST AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL; BUT, IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE ASSISTANT DIRECTOR OF THE HABITAT DIVISION IN OLYMPIA. THE HABITAT DIVISION ASSISTANT DIRECTOR'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOU ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAL APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER HPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSIONS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPRO- VAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350) . 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN HPA ASSOCIATED WITH IRRI- GATION OR STOCK-WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS BOARD PER WAC 259-04. THE MAILING ADDRESS OF THE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO, ROWE SIX, LACEY, WASHINGTON, 98504; TELEPHONE (206) 459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEAL- ING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. HYDRAULIC PROJECT APPROVAL 41 April 29, 1994 (applicant should refer to this date in all correspondence) PAGE 2 OF 2 PAGES 10 APPLICANT NAME DI CONTROL NUMBER Renton, City of 01-95498-01 7 . If pumps are used to bypass the stream around the work area, the inlet hose shall be screened and the outlet positioned in such a manner that will prevent streambed scouring. 8 . Bank protection material shall not appreciably reduce normal watercourse capacity or configuration. 9 . Bank protection material shall be angular rock or other material of a sufficient size to prevent its being i•.ashed away by water action. 10. Overburden material resultin ' from this project shall be deposited so as not to re-enter the wa er. 11. Work shall stop if distressed or dead fish are observed in the bypass reach. The Department shall be notified immediately. 12 . Prior to starting work, the contractor shall submit to the Department of Fish and Wildlife the erosion control plan that includes the plan to bypass the work area during all phases of the project. 13 . At least one week rior to starting this project, contact Philip Schneider a (206) 775-1311, extension 107 . 14 . Work shall conform to plans and specifications submitted with the hydraulic project application including the revised planting plan that replaces sheet 7 of 16 of the original plans. 15. At no time shall there be a complete blocka e of flow, and the new channel shall be filled in a manner thN will minimize the flow impacts downstream. LOCATION: I-405 and Oaksdale Avenue S.W. in Renton .cc: Millard Deusen THIS APPROVAL IS TO BE AVAILABLE ON THE JOB SITE AT ALL TIMES AND ITS PROVISIONS FOLLOWED BY THE PERMITTEE AND OPERATOR PERFORMING THE WORK THE PERSON(S) TO WHOM THIS APPROVAL IS ISSUED MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT WHICH RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL. FAILURE TO COMPLY WITH THE PROVISIONS OF THIS APPROVAL COULD RESULT IN A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE OR IMPRISONMENT. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.100 ARE SUBJECT TO ADDITIONAL RESTRICTIONS, CONDITIONS, OR REVOCATION IF THE DEPARTMENT OF FISH AND WILDLIFE DETERMINES THAT NEW BIOLOGICAL OR PHYSICAL INFORMATION INDICATES THE NEED FOR SUCH ACTION. THE PERMITTEE HAS THE RIGHT PURSUANT TO CHAPTER 34.04 RCW TO APPEAL SUCH DECISIONS. ALL HYDRAULIC PROJECT APPROVALS ISSUED PURSUANT TO RCW 75.20.103 MAY BE MODIFIED BY THE DEPARTMENT OF FISH AND WILDLIFE DUE TO CHANGED CONDITIONS AFTER CONSULTATION WITH THE PERMITTEE: PROVIDED, HOWEVER, THAT SUCH MODIFICATIONS SHALL BE SUBJECT TO APPEAL TO THE HYDRAULIC APPEALS BOARD ESTABLISHED IN RCW 75.20.130. THIS APPROVAL PERTAINS ONLY TO THE PROVISIONS OF THE FISHERIES AND WILDLIFE CODES. ADDITIONAL AUTHORIZATION FROM OTHER PUBLIC AGENCIES MAY BE NECESSARY FOR THIS PROJECT. ---------------------------------------------------- APPEALS - GENERAL INFORMATION IF YOU WISH TO APPEAL DENIAL OR CONDITIONS OF AN HPA, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS: AN INFORMAL APPEAL (WAC 220-110-340) CONSISTS OF CONTACTING THE AREA HABITAT BIOLOGIST AND DISCUSSING YOUR CONCERNS. MOST PROBLEMS ARE RESOLVED AT THIS LEVEL; BUT, IF NOT, YOU MAY ELEVATE YOUR CONCERNS TO THE ASSISTANT DIRECTOR OF THE HABITAT DIVISION IN OLYMPIA. THE HABITAT DIVISION ASSISTANT DIRECTOR'S DECISION SHALL BE APPROVED OR DISAPPROVED BY THE DIRECTOR OR DESIGNEE. IF YOU ARE NOT SATISFIED WITH THE RESULTS OF THIS INFORMAL APPEAL, A FORMAL APPEAL MAY BE FILED. B. FORMAL APPEALS: 1) FOR ALL CIVIL PENALTY APPEALS AND FOR OTHER HPA APPEALS WHICH ARE NOT ASSOCIATED WITH IRRIGATION OR STOCK-WATERING DIVERSIONS, A WRITTEN APPEAL REQUEST MUST BE FILED WITH THE DEPARTMENT THAT ISSUED OR DENIED THE APPRO- VAL OR LEVIED THE CIVIL PENALTY YOU ARE APPEALING (WAC 220-110-350) . 2) FOR APPEALS OF DENIAL OR CONDITIONS OF AN HPA ASSOCIATED WITH IRRI- GATION OR STOCK-WATERING DIVERSIONS OTHER THAN CIVIL PENALTY APPEALS BOARD PER WAC 259-04. THE MAILING ADDRESS OF THE APPEALS BOARD IS: ENVIRONMENTAL HEARINGS OFFICE, BUILDING TWO, ROWE SIX, LACEY, WASHINGTON, 98504; TELEPHONE (206) 459-6327. 3) FAILURE TO APPEAL WITHIN 30 DAYS OF THE DATE OF ACTION YOU ARE APPEAL- ING RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. CITY OF RENTON Planning/Building/Public Works Department Earl Clymer, Mayor April 20, 1994 Philip Schneider, Habitat Biologist Washington State Department of Fish and Wildlife 16018 Mill Creek Blvd. Mill Creek, WA 98012 SUBJECT: 1-405 BOX CULVERT/P-1 CHANNEL IMPROVEMENT SPRINGBROOK CREEK RIVER MILE 0.5 - 0.7 HYDRAULIC PROJECT APPROVAL (HPA) APPLICATION Dear Philip: This letter is in follow-up to our March 30, 1994 meeting at the above-referenced project site regarding our HPA application. As we discussed, enclosed is a full scale copy of the revised fish habitat and planting plan to replace sheet 7 of 16 of the original application. The revised plan provides for planting of disturbed stream banks above elevation 8.0 feet (1929 NGVD, typical) with the native plants noted on sheet 15 of 16 of the original application. A change has also been made to the stabilization plan (sheet 8 of 16) in the highlighted area of the west bank of the proposed channel just to the south of the 1-405 box culvert. Rip rap will be used in lieu of the excelsior blanket in this area up to elevation 8.0 because of the high potential for erosion due to the split channel. I appreciated the opportunity to meet with you on the site. If you have any further questions, please call me at (206) 277-5547. Sincerely, t�"'r Scott Woodbury, Proje�t Manager Surface Water Utility H:DOCS:94-400:SSW:ps CC: Ron Straka Enclosures 200 Mill Avenue South - Renton, Washington 98055 III IS PAPER CONTAINS 50%RECYCLED MATERWL,10 POST CONSUMER y, p 1"=120' 120 IN FEET ) \\ .7 - LEGEND: + `� O FISH HAB1 TA T COMPONENT BANKERS DWARF WILLOWS ` 1 % ® WILDLIFE HABITAT PLAN771VG NOTE. ---------- SEE SHEETS 13-15 FOR HASI TA T DETAILS -- ......... ... h _ o 94-4-00274 r` PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) AT: RE INTON, CROSSING AT: KING COUNTY, WA. DATUM: 1929 NGVD SHEET TITLE: FISH AND WILDLIFE HABITAT APPLICATION BY: CITY OF RENTON ADJACENT PROPERTY OWNERS: MITIGATION PLAN o SEE SHEET 2 OF 16 SHEET: 7 Of 26 DRAWN BY: MDD DATE: 4-20-94 SCALE: AS NOTED i C \ JC (j^ T. 0 1„=120' 120 ( IN FEET ) \ a` , , `\ LEGEND: AREAS COVERED BY RIP RAP 1 1`t ., ?:q 1 AREAS COVERED BY EXCELSIOR BLANkET ' (SEE C/16 FOR DETAILS) ' , NOTES: t .'w !ff.; 1. ALL DISTURBED AREAS, EXCEPT THE LOW FLOW "'``"' - - - —-—-—- CHANNEL AND WITHIN THE DRIP LINE OF BRIDGES, WILL BE COVERED WITH TOPSOIL AND SEEDED WITH GRASS MIXTURE. 2. SEE SHEETS 4 AND 10-12 FOR CHANNEL1 °o SECTION LOCATION AND DETAILS. K !' 94-4-00274- PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: I-405 BOX CULVERT PROPOSED EXCAVATION AND FILL AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- IN: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING DATUM: T PROPERTY OWNERS: AT: RENTON• KING COUNTY. WA. ADJACENT P NGVD SHEET TITLE: STABILIZATION PLAN APPLICATION BY: CITY OF RENTON o o SEE SHEET 2 OF 26 SHEET: �OF Z� DRAWN BY: MDO DATE: 4-20-94 W SCALE: AS NOTED C m 0 01 m P 077 223 176 Receipt for Certified Maim No Insurance Coverage Provided Po TAL-K Do not use for International Mail (See Reverse) Sent to Millard Deusen '1111 `Washington St 1P,%an,43ffi Olympia WA 985 Certified Fee Special Delivery Fee Restricted Delivery Fee Return Receipt Showing rn to Whom&Date Delivered at Return Receipt Showing to Whom, c Date,and Addressee's Address 7 -") TOTAL Postage 1 C $&Fees � Postmark or Date C`1 3-16-94 0 I-405 Box Culvert/PI Channel Imp a STICK POSTAGE STAMPS TO ARTICLE TO COVER FIRST CLASS POSTAGE, CERTIFIED MAIL FEE,AND CHARGES FOR ANY SELECTED OPTIONAL SERVICES(see front). m 1. if you want this receipt postmarked,stick the gummed stub to the right of the return address leaving the receipt attached and present the article at a post office service window or hand it to your rural carrier (no extra charge). Q) 2. If you do not want this receipt postmarked,stick the gummed stub to the right of the return address of the article, date, detach and retain the receipt, and mail the article. rn 3. If you want a return receipt,write the certified mail number and your name and address orba c return receipt card,Form 3811,and attach it to the front of the article by means of the gummed ends if space permits.Otherwise,affix to back of article.Endorse front of article RETURN RECEIPT REQUESTED adjacent to the number. O O CO 4. If you want delivery restricted to the addressee, or to ar authorized agent of the addressee, M endorse RESTRICTED DELIVERY on the front of the article. E 0 5. Enter fees for the services requested in the appropriate spaces on the front of this receipt. If LL return receipt is requested, check the applicable blocks in item 1 of Form 3811. a 6. Save this receipt and present it if you make inquiry. U.S.GPO: 1991—302-916 CITY OF RENTON Planning/Building/Public Works Department Earl Clymer, Mayor March 15, 1994 Millard S. Deusen, Director Habitat Management Division Washington Department of Fish and Wildlife 1 1 1 1 Washington Street P. O. Box 43155 Olympia, WA 98504-3155 SUBJECT: 1-405 BOX CULVERT/P-1 CHANNEL IMPROVEMENT SPRINGBROOK CREEK RIVER MILE 0.5 - 0.7 HYDRAULIC PROJECT APPROVAL APPLICATION Dear Mr. Deusen: Enclosed for your Department's review is the Hydraulic Project Approval (HPA) permit application for the above-referenced project. The proposed project is the final segment of a series of flood control improvements to the Springbrook Creek/P-1 Channel constructed north of SW 16th Street from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). The project design was developed in consultation with Joe Robel of your office prior to his recent retirement. We appreciated Joe's willingness to review the project prior to formal application and we have made modifications to the project design based on his review. The enclosed information includes: • Hydraulic Project Application form • Project Narrative • Vicinity Map and Drawings of the Proposed Work • City of Renton Final SEPA Determination The proposed project would provide many benefits including increased flow conveyance capacity and flood storage as well as alleviation of the existing stream bank erosion problem. The project completes the channel improvements for which the existing 1-405 and SW Grady Way box culverts, Oakesdale underpass retaining wall, and SW 16th Street bridge capital improvements were designed and constructed. The project utilizes land area, which by its location and zoning designation is of no commercial use, but will be enhanced to provide a riparian corridor for fish and wildlife habitat. These improvements will also be beneficial to 200 Mill Avenue South - Renton, Washington 98055 llilS PAPFR CONTAINS 50%RE-('Y(T.ED MATERIAL,1Wb POSTCONSUMER water quality by reducing channel erosion, increasing biofiltration, and reducing exposure to solar induced temperature increases. The pedestrian trail link included in the project will provide new educational and recreational opportunities. Construction is planned for the summer of 1994. Any work within the channel of Springbrook Creek is proposed to be completed during the summer construction window of June 15 - September 15 as approved and in accordance with permit conditions to be established by your department. Depending upon the timing for issuance of the Corps of Engineers Section 404 individual permit and uncertainties regarding weather and on-site conditions, it may be necessary to request that construction extend beyond September 15, 1994, as conditions permit. Please include consideration of an extension in your review of the project application. If you have any questions, or need more information, please call Scott Woodbury, City of Renton Project Manager, at 206-277-5547. Sincer ly, Ronald J. Straka, P.E., Engineering Supervisor Surface Water Utility H:DOCS:94-221:SSW:ps CC: Scott Woodbury Enclosures HYDRAULIC PROJECT APPLICATION (R.C.W.75.20.100) 4 . (R C.W. 75.20,103) DEPARTMENT OF WILDLIFE DEPARTMENT OF FISHERIES 600 Capitol Way North PLEASE PRINT OR TYPE General Admen. Bldg. Olympia,Washington 98501-1091 DO NOT WRITE IN SHADED AREA Olympia,Washington 98504 (206) 753-5897 -- (206)753-6650 1101 LAST NAME r IHST 18 CONTACT PHONE(S) [3 CONTROL NUMBER CITY OF RENTON (206) 277-5547 19 STREET OR RURAL ROUTE - - ---" 1:1 El wRIA 200 Mill Avenue South - 4th Floor, Scott Woodbury ® CITY -- - STATE Woodbury CITY ZIP --- 14 IS Renton, WA 98055 7p WATER TRIBUTARY TO ii TYPE OF PROJECI Springbrook Creek Black/Green/Duwamish River Construct New Widened QUARTER SECTION -TOWNSHIP RANGE(E-W) COUNTY SECTION NE 24 23 4E King Channel Repair undercut SE 24 23 4E King stream bank culvert outfal 16 DESCRIPTION OF OVERALL PROJECT.SPECIFIC WORK WITHIN THE ORDINARY HIGH WATER LINE.AND PLANS FOR THE PROTECTION OF FISH LIFOrotec i OI Activities effecting the area within the existing ordinary high mark of Springbrook Creek include channel construction. stream bank grading, fish and wildlife habitat planting and structure installation, temporary stream bypass and dewatering systems installation and operatioi during construction, and erosion protection measures implementation. e a tac a sees a le( "Project Narrative provide a complete escr PROPOSED STARTING DATE PROPOSED FINISHING DATE September 15, 1994 with ex- June 15, 1994 --7tension to Oct. 15, 1994 as conditions pert-lit . 2p SEPA LEAD AGENCY,DETERMINATION.AND DATE OF DETERMINATION Cityof Renton Determination of Non-significance, mitigated, final March 14, 1994. 21 OTHER PERMITS See attached project narrative. IT IS UNDERSTOOD THAT NO WORK WILL I SIGNAT RE DATE BE STARTED UNTIL A SIGNED APPROVAL IS RECEIVED TIME uMITATIONS: r TV I LROA ' RA - --- e CRE- � - - - ny Goliy ourse � 5��• v Say , ,� I 30 as,s, age Sew� • _ = �i7 \ ' ST -'_� ;�longacre� :4 __ \\ L OCATronl ---- -I Track 2q�___'= -- r -� •I ( _ - - -- 9 IOI Reservoir I --- 25 .30 i I i c SOURCE: USGS, 1973. RENTON, WA M nvc c vfy QUADRANGE MAP RPQiC)[OCAnpv 0 1"=2000' 2000 a I ( IN FEET ) A/osHgA F srArf ti °o 2 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD COUNTY OF: KING SHEET TITLE: VICINITY MAP STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: DRAWN BY: SSW/MDD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 0 SCALE: AS NOTED SHEET: 1 OF 16 DATE: 3-15-94 i W SW GRAD Y WA Y BOX CUL VER T \ WAY / GvpOY / LEGEND. PROPER T Y L INES ROAD CENTERLINE / OAKESDALE A VE SW RETAINING WALL / O 1-405 BOX CULVERT I-405 BRIDGE BRIDGE ABUTMENT s.n. eos AND SUPPORT P/L/NG WETLAND "A \ ------- _ --— —�- OAKESDALE AVE SW RETAINING WALL �.� APPROXIMA TE TOP \ ~ \ OF BANK APPROX. TOP OF BAN\ , �1 •�� SINGLE FAMIL Y RESIDENCE � m ` SW 16TH ST APPROX. ORDINARY \ \ \ `f BRIDGE HIGH WATER MARK (APPROX. A VE DEPTH 2-4 FTC SW. 167H ST DIREC770N OF FLOW _BETA/NINE FOR SPR/NGBROOK ' RETAINING WALL CREEK © CI ® - O ti a PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO H BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING y DATUM: 1929 NGVD SHEET TITLE: EXISTING CONDITIONS PLAN COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON 1. KING COUNTY DRAINAGE DIST. NO. 1 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON 2. PUGET WESTERN, INC. 3. CITY OF RENTON SHEET: 2 OF 16 4. GROUP HEALTH COOPERTIVE a 1"=120' 120 GATE: 3-15-94 � 5. BOEING COMPANY 6. WASHINGTON DEPT. OF TRANSPORTATION 2 W 7. MUNICIPALITY OF METROPOLITAN SEATTI- ( IN FEET ) c lD O m m -120' 120 '• ( IN FEET ) i WETLAND ':4 Z7CA TED WITHIN I-405 ROADS/DE '•, ?:: `:-+ le'-, DRAINAGE DITCH, /S ASSUMED NOT..T!�'-BF• WA TERS OF THE UNITED STA T `Q)ES PER 40 CFR a 328.3(A). THEREFORE CU ......... F/L L FOR PEDESTR%AN — 'ti': '. '- �"• �;``i?; TRAIL CUL l/ERT CROSSING IS NOT REGULATED. J _....__......__,::; ......T.....__..... _.... ,. 16 LEGEND: MM AREA OF HIGH IMPACT tx U......; WI THIN EXIST/NC ORDINAR Y HIGH WA TER MARK DUE TO CUT/FILL FOR 'i PROPOSED CHANNEL. AREA OF LOW IMPACT ' I, WITHIN ORDINARY HIGH WATER MARK DUE _s"........ __ :.: . �. .... TO TEMPORARY DFWA TER/NG/ j �. t. INCIDENTAL DISTURBANCE ---.. ..-......_. __ --- ---------- NECESSAR Y TO ACCOMPLISH PROPOSED CHANNEL C�111[STRUCTLON ^-V ...: _ J. PURPOSE: INCREASE FLOOD CONVEYANCE ° PROJECT TITLE: I-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO y BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® I-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: AREAS WITHIN ORDINARY COUNTY OF: KING ADJACENT PROPERTY OWNERS: HIGH WATER MARK IM- STATE OF: WASHINGTON o SEE SHEET 2 OF 16 PACTED BY CONSTRUCTION. APPLICATION BY: CITY OF RENTON o SHEET: 3 OF 16 DRAWN BY: MDD DATE: 3-1 5-94 SCALE: AS NOTED Q 2 0 CD 0 m m r �l - % f. WING WALL T20" WIDENED CHANNEL 0 1 =1 20• 120 ( IN FEET ) _ 50' /-405 BOX CUL VERT OUTLET CHANNEL 90' STREAM CE/�LTERL�AIE fOW FLOW CHANNEL BANK IMPROVEMENT ' \\ - 20' CONC. WINGWALL '•. _ •� — ..._� N€-H16H FLOW CHANNEL 40' CONC. WINGWALL APPROX.. JRA/L ALIGNMENT k:.. —.... 215'1(— 0,5 BOX CUL VERT INLET CHANNEL EX/SIING CHANNEL TO-REMAIN LEGEND. LILLZ NEW CUT/;/LL SLOPE ?�`• �� PEDESTRIAN IRA/L - • 80' GAB/ON WALL , ............... ...................... . WIDENED CHANNEL 7ikEP2EEEEEEiEiEcc`i_;E(!E:::Eii �� � `� NEW PEDES•7R�AN/bbCYfXE [siia:::::::::::::::::: :'S: -<:.i � � 7RA11- Ac=LL'14RLDm ALIOVA10VT 717 BEDDEW ---...... .. r 7RAN911Q4�TA770V LVW-VCV� ........................................................ S/AOA<=GIANNEL I PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL AND COUNTY OF: KING ADJACENT PROPERTY OWNERS: PEDESTRIAN TRAIL PLAN STATE OF: WASHINGTON SEE SHEET 2 OF 16 APPLICATION BY: CITY OF RENTON o SHEET: 4 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED • i 1"=120' 120 ( IN FEET ) a- gtK 16 1 , ♦ ♦ ` 1 \\ ♦ "t t , .r r \� `\.�♦ ' `'.` is '\ 1'1 1,♦a ,�l l -•l l � i .i , ♦ . i J_.......... ....... :) i tvl .i 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON i AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) CO 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: PROPOSED CHANNEL CROSS COUNTY OF: KING 2 STATE OF: WASHINGTON o ADJACENT PROPERTY OWNERS: SECTION REFERENCE PLAN APPLICATION BY: CITY OF RENTON a SEE SHEET 2 OF 16 D SHEET: 5 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED e 2 W (U m O m m 0 1"=120' 120 l j ( IN FEET ) , 1, LEGEND: ® PVC MEMBRANE `•t 'l t. •t%y 1 l 1 r ; ............ .............. _..........-__......_... ....._.. _- ._._.......... q ................ ......... . .. .......................................... h , PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: I-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO H BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 4 I-405 CROSSING y DATUM: 1929 NGVD SHEET TITLE: PVC MEMBRANE PLAN COUNTY OF: KING h ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 APPLICATION BY: CITY OF RENTON 2 DRAWN BY: MDD SHEET: 6 OF 16 DATE: 3--1 5-94 s SCALE: AS NOTED i W i r ` % 0 1••=1 20' 120 IN FEET ) , '. �... , , , , , LEGEND: ;;•,�`--� •\ %�' q FISI-I HABITAT COMPONENT '`,;' , ti �, '�5ry BANKERS DWARF WILLOWS ® WILDLIFE HABITAT PLANT/NG t = i NOTE. ............ SEE SHEETS 13-I5 _ ___..... - ........ . - - -- -- ................. _ R q FOR HAB/TAT DETAILS _......... ......... ....................•.•.• 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON e AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD COUNTY OF: KING SHEET TITLE: FISH AND WILDLIFE HABITAT i ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON o MITIGATION PLAN SEE SHEET 2 OF 16 APPLICATION BY: CITY OF RENTON o 0 SHEET: 7 OF 16 DRAWN BY: MDD DATE: 3-15-94 SCALE: AS NOTED Q 2 W C i � r 1„-120' 120 IN FEET ). — ... ` .`t-.....__i ...- 1. , ---.... I Ix ,t', xxx LEGEND: ,.......:' AREAS C0VEREO BY RIP RAP 't i ti i AREAS COVERED BY EXCELS/OR SLAAAFT ' ' '• (SEE C/16 FOR DETAILS) , ...........1.__...... NOTES: —._........_. 1. ALL DISTURBED AREAS, EXCEPT THE LOW FLOW CHANNEL AND WITHIN THE DRIP LINE OF BRIDGES, WILL BE COVERED WITH TOPSOIL AND SEEDED _-- s:_:::::-:::_ -. ..........................:::'::::::'..__".. .......... . ti WITH GRASS MIXTURE. � .. _ ..• 2. SEE SHEETS 4 AND 10-12 FOR CHANNEL ' SECTION LOCATION AND DETAILS. i1� ��.--.- ..................� ;�-1 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO h BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) C4 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: STABILIZATION PLAN COUNTY OF: KINGSTATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 0 SHEET: 8 OF 16 DRAWN BY: MUD DATE: 3-15-94 SCALE: AS NOTED • i C m 0 rn m � 31 ____�21 � W Q rAPPROX. C90UNO SURFACE Il !s roDaMw cyi4wfz -_ _-_ cl twl Io -�IAX £L£V. go TYP -EXCELSTCW BLANKET 1 EXISTING RETAIN/NC WALL ROCK RLPRAP ctm-YOR BLANKET PW MEMBRANE I F7L -J -J -70 -65 -60 -JJ -50 -45 -IO -m -J0 -75 -20 -15 j -Jo -J 0 J 10 IJ m SJ JO Js Io !J W .5 SECTION Io t w.v t r-,ru..n 70 �APPROX AROUND SURFACE EXCEL SUR BLANKET EXISTING RETAINING WALL DO NOT DISTURB J �W:UBRA, ` Y o f1L IER o P -J -3 -70 -63 -60 -JJ -Jo -45 -40 -.W -JYl -25 -Xl -15 -/0 j -J 0 3 10 15 70 IJ JO JJ M IJ 50 M I I SECTION EXTSnNG MANNaE 7O CAB/QVS I ? Zo 15 j� !Q APPROX WOUND SUWACE rs 2 v - - _- EXCELS/A4 BLANKET ------._._._._.- .- -_-- o 10 MW EXISTNG 90-R a 10 EXLI2SYQ4 BLANKET EX/SANG RETA/A/ING WALL J METRO WASTE �, �+ J SEWA&-1 NE --�-- PLL'.GEMBRANE / 'NL -J -IO -JJ -JO -75 -10 -13 -!O -3 Qrf 10 13 X! SJ JO .SS 10 45 JO 3.5 I I SECTION w q LEGEND: m ® Cu T/FILL WI THIN AREA OF ORDINARY HIGH WATER MARK (OH WM). 0 4 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING COUNTY OF: KING =' DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS:SEE SHEET 2 Of 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON 12 °o SCALE: 1"=20' HORIZONTAL SHEET: 11 OF 16 1"=20' VERTICAL DATE: 3-15-94 i W 20 20 I I WI •, . APPROX CROUNO SURFACE rJ I ______________-_.__.-_ IJ , 3 2. to- NEW O�� 1 RETAIN/NC j EX/SANC RETAIN/NC WALL J WALL ROCK 5 R/PRAP v FILEXCELSIOR BLANKET 0 TER F/L TER -5 -J -IO -JJ -JO -25 -20 -15 I -10 -J 5 70 15 10 n JO u 10 I3 SD JJ PVC MEMBRANE SEG770N an 20- ------------ UGHT LOOSE R/PRAP WI 15 ----------- UGHI, 3 ? APPROX. GRCU _SURFACE ------.__.___ 15 O Z _r ra N` VI � --- ra MAX -LEV. 6..O 7YP 3a i •� "N d FVVIS71&?,WE EXISTING RETAINING WALL 5 ROCK s : '0�::. R/PRAP EXCLZ 57OR BLANKET-0 FTL 1E j -s -S -10 -65 -60 -55 -SO -IS -FO -JS -jo -25 -117 -15 -10 -5 Q 5 10 15 70 15 A7 J.S M IS 50 55 PVC MEMBRANE SEMON 20 20 I I W /5 � 75 3� Z� _�i 2 i APPROX GRGY/NO SURFALl� ____________ -------- C? to- _ 3Q I ---------------- FW/W GRADE EXISTING RETAIV/NC WALL to EXCEZ SYOR BLANKET-0 fX TER -5 -5 -XJ -65 -60 -SS -50 -IS -IO -J6 _10 -25 -20 -15 -10 �5 L 5 JO 15 20 25 JO 35 40 45 50 55 PVL'MEMBRANE SECTION 01 a LEGEND: ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK (OHWM). 0 c N PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON rz AND STORAGE, REPAIR UNDERCUT STREAM Pi CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: CHANNEL SECTIONS COUNTY OF: KING STATE OF: WASHINGTON ADJACENT PROPERTY OWNERS: o SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON SCALE: 1"=20' HORIZONTAL SHEET: 12 OF 16 1"=20' VERTICAL DATE: 3-15-94 i W _ p _f05m0 1-405 BOx C,A t£7Pr o,/S o sW LWAor wAr BOA'LTK LERr 1O / �APPRQC CEN1IIXNf UPC(MO 5(.I.1�AG1r 15 15 10 P-1 ai"AEL 8or7 I . 0 / LOW fZOW O`NANfL B017L1V 5 PW Al:MANE 5 O - - - 0 _5 _5 675+00 676+00 677+00 678+00 679400 PROFILE Lf CHANNEL sr 161N sr ewOcr EVS AfG 1-405 BOX aA 1v?r zo 20 15 _ _ —_— _ 15 m � 10 APPROX 5 5 o amwn Sao , >�� - —__1�10!•'1ZOK fd`/AM'Q BQIZPIL________—__ 0 _5 5 570+00 671400 672+00 67J+00 674+00 675+00 675+50 PROFILE CHANNEL LECENO: ® CUT/L7LL W THIN AREA OF ORDINARY HIGH WATER MARK q h ti O U� 3 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) 0 1-405 CROSSING DATUM: N COUNTY OF: KING SHEET TITLE: PROPOSED CHANNEL STATE OF: WASHINGTON ADJACENTT PROPERTY Y OWNERS: PROFILE APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 DRAWN BY: MDD o SCALE: 1"=100' HORIZONTAL SHEET: 9 OF 16 1"=25' VERTICAL DATE: 3-15-94 i W 20 -20 ._EX7577NG WWWALL�1 W rs �I pl to APP X. LWDUND SURFACE 4j E'i ro - 3 EXISONG REMNING WALL t = Im o l N/SH GRADE` 1 Cs J ° nL 7ER 0 I -J -J -JJ -JO -ls -s0 -JJ -30 -25 -20 -Is -10 -J 0 J 10 15 20 71 m JJ I° tJ 30 JJ 60 6,1 )0 SECTION 20 EX/S771VG SW 767N ST BR",' Io _--- rs rJ to- APPROX_GROUND ,T RFACEj rO li 13 s 14 f7N/S�l GRADE •- C" �y - t ° nt 7ER 0 I -s -J -t1 -_v -q -40 -J[S -JO -2J -20 -15 -10 -J 0 J 10 15 A 21 JC1 JCS I° 11 J0 JJ 1. 6J 10 SECTION EXIS77NG REMAVJING WALL XIS77NC WNNCWALL 217 ? 20 is ---- Ze V3 1II APPROX GROUND SURF-A-C- E ----- _ -._.___— to /r0s 'u 30 i FIN/W CRADE 1 Q tv I t ROCK RIPRAP 0 0 1171 7�R -J -1 -Jf -10 -IJ -I0 -.17 -M -21 -X1 -15 -to -J 0 J 10 15 20 25 JO JJ IO IJ SD SS 60 61 At SECTION LEGEND: ® CUT/FILL WITHIN AREA OF ORDINARY HIGH WATER MARK a (OHWM). °o 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: N COUNTY OF: KING SHEET TITLE: CHANNEL SECTIONS STATE OF: WASHINGTON ADJACENTT PR PROPERTERT Y OWNERS: AWN BY: MDD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 DR 12 0 SCALE: 1"=20' HORIZONTAL SHEET: 10 OF 16 i 1"=20' VERTICAL DATE: 3-15-94 i • W A E LOw FLOW 0"' JO" r2 FISH A— � RESRNC eIXKDERS / (see de[vA B J 24"DIA. n-W RESTING LOW FLOW coT CHANNEL �LOC w7H Root wA0 / r7 7 7/ O �l o 112 CALK WRE ROPE O RIPRAP A C0N04E7F SLOCK K (see derv,?AJ C 0 PLAN NTS. 1 PLAN N T.S FISH HABITAT COMPONENT FISH HABITAT COMPONENT ,A., „B„ 2 24'DIA. P-W J 24'OVA. F7W RESTING BOULDERS REST7NC BOULDERS F Low Flow (:ee derv.?e) [low Flow ROCK RIPRAP CCWCRE7F BLOCK (see d.W A) SO" 10.0" LOG wTN ROOT WAD X10" TAKE SLACK OUT OF 1/2"GAL MIRE ROPE SECTION SECTION N T.S NTS q b h O U2 3 O 1 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: MDD APPLICATION BY: CITY OF RENTON o SCALE: AS NOTED SHEET: 13 OF 16 DATE: 3-15-94 2 W E /5 REBAR IMBEDDED 6" /NTO CONCWE7E 40] 1 I J 24"DIA. FISH RES77NC BOULDERS LOW FLOW D__ DETAIL A IV.7S ROCK R/P////R����AP 24"D/A. F75H RESTING BOULDER PLAN TREF TRUNK ROOT WAD N.T.S i� `� ,/8 REBAR U N07E, Fosten Fish resting boulder to tree with /8 rebor inserted FISH HABITAT COMPONENT through the tree and 6"info 24"DIA. FISH RESTING BOULDER Cn boulder Use on epoxy system to anchor the rebor to the PLAN stone. ROOT WAD 24"DIA. F7SH RES77NG BOULDER J 24'DIA. F7SH RES77NC BOULDERS i LOW FZOW ROG7C R/PRAP TREE TRUNK �n O N CUT ROOTS NEXT TO CHANNEL BOTTOM EL EVA T/ON SECTION DETAIL B T N. S. o NTS. 0 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE. REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING h DATUM: NGVD SHEET TITLE: HABITAT DETAILS ADJACENTT P COUNTY OF: KING PROPERTY OWNERS: STATE OF: WASHINGTONDRAWN BY: MDD APPLICATION BY: CITY OF RENTON SEE SHEET 2 OF 16 0 i SCALE: NOT TO SCALE SHEET: 14 OF 16 DATE: 3-15-94 • 2 E o so'rm. A'O,F O O 0p O 0 O G 0 0 0 0®®O—RfDci om'. o s PMt woenv oPaT�.rcn ae O C}C}o'cc ��O O a 0 0 0 0—C1AIrYAN orcrrFacaar da+a.<+as .an 0 660600000—PACITKsa aer ymrs iropp�W n.(.vw.ro.n s o'rry ry �CNA,WFI BO/rGY/ iYILDIJFE IfADITAT PLANTING DETAIL N rS / 1 0000000000000001 000000 Y -_-__ -- f,O�N AACICCO -- (sO W!H PEAr YOSS AAO YA ugo M1 S 7 000000 4 0000000000000 p 0 I l cc f YIV. -{ PLANTING DETAIL #'ILLO#' PLANTING DETAIL N rs w rs PLANTING LIST OUAN SaIN77RC NAME CQVMCVV NAME 92E 9ZE 520 SALT LOM-" 8AAWZ?(.S Of1'A 1WLOW I R. ,i1.01110.'17 ag7#,C 1 R a 75 AM AAC�"TLO%VA PACAW 4?WCERFARY CLWUAO R.a 75 YAM'WA AIX.FiYAW TAIL pQ£L'—(RAPE Q?vTAIYER, I, a 75 COWAIS SR.TCAWERA .Q[DQ9TR q'G11q.p S pd. COVrAIMEJP.J R.a 73 c IAAUI.J R.a M U 0 h O U� 3 PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE, REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING- AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: MOD APPLICATION BY: CITY OF RENTON o SCALE: AS NOTED SHEET: 15 OF 16 DATE: 3-1 5-94 W . 2 W SEE SLOT D/TC:H DETA/L CHANNEL BOTTOM CROSS SECTION USE A COMMON ROW OF STABLES LW AD✓OVN/NG BL KETS CHANNEL BOTMV ------------ IX mac' / STAPLE � ua+r taag�— un.c ncvea a t d fxM? BUTT BLANKET EDCES TOGETHER SECTION A fY07F N.Ts. 16 Place blanket on slopes perpendicular to the direction of flow. Place blanket on channel bottom parallel to the direction of flow. PLAN EXL125/AR BLANKET N•p,�qp I r r�o J =1 I I=1 I I=�11= I nx erEv Qa --- - ---------- SECTION SLOT DITCH DETAIL N.rs 1,16 EXCELSIOR BLANKET DETAILS C N.T.s 16 q b h O PURPOSE: INCREASE FLOOD CONVEYANCE PROJECT TITLE: 1-405 BOX CULVERT IN: CITY OF RENTON AND STORAGE; REPAIR UNDERCUT STREAM P1 CHANNEL IMPROVEMENT (SPRING— AT: SPRINGBROOK CREEK (RM 0.5 TO BANK, MINIMIZE EROSION POTENTIAL. BROOK CREEK) 0.7) ® 1-405 CROSSING DATUM: 1929 NGVD SHEET TITLE: HABITAT DETAILS COUNTY OF: KING y ADJACENT PROPERTY OWNERS: STATE OF: WASHINGTON SEE SHEET 2 OF 16 DRAWN BY: MOD APPLICATION BY: CITY OF RENTON SCALE: AS NOTED SHEET: 16 OF 16 DATE: 3-15-94 i W ii PROJECT NARRATIVE Project name: 1-405 Box Culvert/P-1 Channel Improvement Project (Springbrook Creek RM 0.5-0.7), from SW Grady Way to SW 16th Street. Size and location of the project: The project is linear in shape and is adjacent to, and includes portions of, a reach of Springbrook Creek that flows to the north. The project area is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs east-west through the project area approximately 400 feet north of SW 16th Street. The project area is slightly north and east of the former Longacres racetrack and slightly southeast of the METRO Wastewater Treatment Plant. The entire project is in the SE 1/4 and NE 1/4 of Section 24, Township 23 North, Range 4 East, W.M., in King County, Washington. The project area is approximately 3-1/4 acres. Existing improvements and project description: The proposed project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel made from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). Improvements which have been completed during this period include the Black River pump station forebay, P-1 Channel improvements from the forebay to SW Grady Way, the SW Grady Way and 1-405 box culverts, the P-1 Channel/Oakesdale retaining wall, and the SW 16th Street bridge. The purpose of this proposed project is to complete the construction of P-1 Channel improvements from SW Grady Way (Sta 680+26.37) to SW 16th Street (Sta 670+76). The existing Springbrook Creek stream channel, which conveys drainage from a 22 square mile watershed, directs flows north under the SW 16th Street bridge toward the 1-405 box culvert. However, since the corresponding channel improvements to allow flows into the culvert were not constructed, fill now blocking the 1-405 box culvert forces the flow around the culvert to the west and underneath the 1-405 bridge adjacent to the culvert. Continuing downstream from under the 1-405 bridge, the flow is redirected to the northeast to pass through the SW Grady Way box culvert and on toward the Black River Pump Station forebay. Only three of the five cells of the SW Grady Way culvert are currently open because of the existing narrow inlet channel blocking the outer two cells. The channel reach between 1-405 and SW Grady Way is a source of downstream sedimentation due to erosion along the west bank of the reach. The project area provides minimal habitat for wildlife because the surrounding streets confine Springbrook Creek to a narrow, defined corridor disconnected from other habitat in the area. Shoreline anchoring work by the Department of Transportation under 1-405, significant channel erosion and sedimentation result in low quality fish habitat. The narrow existing channel also affords little in-stream or off-stream shelter to migrating fish which the proposed project will provide. The lower reach of Springbrook Creek is primarily suited for migration and rearing. The proposed channel construction would begin immediately upstream of the SW 16th Street bridge and extend north along Oakesdale Avenue SW through the 1-405 box { Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 2 culvert to SW Grady Way. Fill blocking the 1-405 box culvert would be removed and Springbrook Creek flows allowed to pass through the 1-405 box culvert. Low flows and most of the high flows would pass through the new channel. A low flow channel to maintain fish passage is included in the design which would connect to one of the five bays of the 1-405 and SW Grady Way box culverts which have a lower bottom elevation than the other bays for fish passage. Fill blocking the SW Grady Way box culvert would also be removed. The existing stream channel adjacent to and under I- 405 would be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. The proposed project would provide many benefits including increased flow conveyance capacity and flood storage as well as alleviation of the existing erosion problem. The project completes the channel improvements for which the existing I- 405 and SW Grady Way box culverts, P-1/Oakesdale retaining wall, and SW 16th Street bridge capital improvements were designed and constructed. The project utilizes land area, which by its location and zoning designation is of no commercial use, but will be enhanced to provide a riparian corridor for fish and wildlife habitat. These improvements would also be beneficial to water quality by reducing channel erosion, maximizing biofiltration, and reducing exposure to solar induced temperature increases through a habitat planting plan to be constructed as part of the project. The project will also provide for a trail link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north and south, which will provide increased recreational opportunities. The trail alignment from the south side of SW Grady Way to about 80 feet north of SW 16th Street follows along the top of the west bank of the existing Springbrook Creek channel. The alignment of the remaining portion of the trail to SW 16th Street and the crossing may occur along one of two route options within a proposed corridor. The corridor extends from the west end of the SW 16th Street bridge to the first new Boeing Customer Service Training Center (CSTC) driveway west of the bridge, and from the terminus of the proposed trail about 80 feet north of SW 16th Street to the southern edge of the SW 16th Street right-of- way. The two options considered in this application are: 1) a crossing opposite the Boeing CSTC shoreline trail; or 2) a crossing at the first Boeing CSTC driveway intersection west of the SW 16th Street bridge. The crossing alternative to be constructed will be selected by the City Transportation Division in a planned study of the crossing alternatives. Acquisition of a permanent easement for the trail link is proposed to secure the necessary rights to allow public use. The easement will primarily follow the existing channel and minimize the area impact on the adjacent properties. Only the 80 foot segment directly north of SW 16th Street may have a greater land area impact if the crossing will be constructed at the Boeing CSTC driveway. This is because of its increased distance from the channel compared to the option of crossing opposite the shoreline trail south of SW 16th Street. Current use of the project site and adjacent properties: The existing Springbrook Creek channel that flows through the project area is best defined as a medium utility use and with adoption of the Interim Zoning Code has become an existing non-conforming use (Renton, 1993a). This reach is the only outlet for a 22 square mile tributary drainage area and cannot be abandoned, but will remain in use. The new channel segment to be constructed with the proposed project, which Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 3 is adjacent to and includes portions of the existing channel, will create additional medium utility use between the existing channel and the 1-405 Oakesdale Avenue SW underpass. The project area is generally bounded by SW 16th Street on the south, SW Grady Way on the north, and the 1-405 Oakesdale Avenue SW underpass on the east. 1-405 runs east-west through the project area approximately 400 feet north of SW 16th Street. The project area is slightly north and east of the former Longacres racetrack site now being developed as the Boeing CSTC facilities, and slightly southeast of the METRO Wastewater Treatment Plant. The property in the project area to the north of 1-405 and west of the project channel is vacant land, as is the property south and east of SW 16th Street. A single family dwelling with horse pasture is to the west of the channel, south of 1-405, and north of SW 16th Street. General soil types found on the project site: The USDA SCS Soil Survey (SCS, 1973) for the King County Area, Washington, designates the soil in project area as urban land (Ur). The natural soil layers of Urban land soils are defined as having been disturbed and/or covered with fill material. Several geotechnical studies (CH2M Hill, 1987; GeoEngineers, 1984 and 1988; Hong, 1986) have been performed in the project area for the purpose of determining the construction requirements of the adjacent roadways and their related structures. In these studies, the soil profile was examined using drilled borings and test pits of varying depths (to as much as 80 feet). The findings of the studies were similar and indicative of the area's history as a floodplain for the Green, White, Black, and Cedar Rivers. The soil profile reflected a layering of material likely due to stream bedload, floodplain, and alluvial deposition. Below the surface, several feet of sandy silt and silty sand were encountered in the borings with apparent lenses of clay, gravel, silt, and peat. The soil profile grades downward to more coarse and dense sand with increasing gravel proportions, but also with lenses of finer materials and debris. The City of Renton has mapped the Green River Valley area as a seismic hazard (Renton, 1993b), due to the liquefaction potential of the unconsolidated sands present in the Valley soil profile. Even without the proposed project having been constructed, the adjacent structures are subject to liquefaction induced settlement. However, these structures were designed to accommodate the proposed channel improvement. The construction of the project is therefore not anticipated to impose unanticipated risks to structures in the project area-due to seismic ground movement and acceleration. The I- 405 bridges in the vicinity are constructed on piling and other structures are founded on broad footings to reduce the risk of settlement due to liquefaction. A portion of the west bank of the existing channel north of 1-405 has been eroded to a near vertical slope and is therefore unstable. This area will be graded to a more stable 2 horizontal to 1 vertical slope and protected with rip rap and vegetation. Nature of the existing shoreline: The reach of Springbrook Creek within the project area is an open channel which drains approximately 22 square miles of pervious and impervious land area from Kent, Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 4 Tukwila, King County, and Renton. Surface water runoff reaches Springbrook Creek from these areas by overland flow or from a system of culvert and open channel point discharges along its length. Springbrook Creek flows north to join the Black River in the Black River Pump Station forebay which is then pumped into the Green River. The Duwamish River, formed by the confluence of the Black and Green Rivers, flows northerly into the Elliott Bay of the Puget Sound. The entire project is within 200 feet of Springbrook Creek. Springbrook Creek, through the project area, is designated a Shoreline of the State by the Department of Ecology, which determined that the mean annual flow of the creek in the area of the project was equal to or greater than 20 cubic feet per second (cfs). The City of Renton shoreline designation of the project reach is urban (Renton, 1990). The entire project area also lies within the 100-year floodway and floodplain according to Federal Emergency Management Agency Flood Insurance Rate Map 530033C0453D (FEMA, 1989a). The FEMA Flood Insurance Study regulatory base flood (100-year) water surface elevation in the reach is 16.4 feet National Geodetic Vertical Datum (NGVD) at SW 16th Street (FEMA, 1989b). More recent preliminary hydrologic (Northwest Hydraulic Consultants, 1991) and hydraulic (R. W. Beck, 1992) modeling analysis indicates that the base flood elevations of Springbrook Creek may be lower than those determined by FEMA. However, these and other analysis (Hammond, Collier, Wade- Livingstone, 1992) also identified existing and potential flooding problem areas upstream of the project reach due to high water levels in Springbrook Creek. The primary purpose of the proposed project is to increase the flood conveyance and storage capacity in the project reach and thereby reduce the level of flooding in existing upstream problem areas. The existing Springbrook Creek channel, including the reach in the project area, has been extensively modified and disturbed by dredging and vegetation management activities performed by adjacent land owners and Drainage District No. 1 . In an on-site field inventory (SCS, 1989), the existing channel was noted to have open water approximately 15 to 20 foot wide with 2 to 3 feet of woody and herbaceous vegetation on each side of the channel. The existing channel under 1-405, however, has been severely eroded by flood waters and disturbed by subsequent shoreline anchoring efforts by the Department of Transportation under 1-405. The significant channel erosion and sedimentation result in low quality fish habitat. A wetland inventory of the proposed project area was also conducted on March 1, 1993 and the findings summarized (SCS, 1993a, b, c). Eight sites were sampled and described. Only the southern 1-405 roadside drainage ditch was identified as a wetland according to the criteria of the Corps of Engineer's 1987 Wetland Delineation Manual and the 1989 Federal Manual for Identifying and Delineating Jurisdictional Wetlands. Two delineation methods are required because Springbrook Creek through the project area is not only under local jurisdiction, as defined by the 1989 Manual, but is also subject to the jurisdiction of the Federal Clean Water Act, Section 404, administered by the Corps, as defined by 1987 Manual. The wetland (Wetland A) is linear in shape and approximately 0.01 acre in size per 100 lineal feet of ditch. Because of its size, type, location adjacent to 1-405, and history of disturbance the wetland is given a low quality, Category 3 rating according to the City's Wetlands Management Ordinance. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 5 Fish have been recorded migrating upstream at the Black River Pump Station (Renton, 1993c). The fish counter at the pump station had recorded the following numbers for several years for the period from September through January. 1983-1984: 155 1986-1987: 82 1989-1990: 77 1984-1985: 119 1987-1988: 166 1990-1991 : 69 1985-1986: 47 1988-1989: 95 1991-1992: 107 The suitability of Springbrook Creek for salmonid spawning is poor and the rearing habitat is degraded. Upper tributary streams, such as Garrison Creek, may provide spawning and rearing habitat and Springbrook Creek provides the needed migration route. The Department of Fish and Wildlife has indicated that Springbrook Creek does support runs of coho salmon and other anadromous fish including steelhead, and cutthroat trout (Renton, 1993c). The proposed project will help to enhance the habitat quality of Springbrook Creek within the project reach through a combination of riparian plantings and installation of in-stream rock and woody debris structures. The existing channel will be preserved and provide off-channel flood storage that could be used as a resting area during high flows. Proposed construction dates and phasing: Construction is proposed for the summer of 1994. Any construction within the existing channel will be allowed to occur during the summer months of the Washington State Department of Fish and Wildlife "window" from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Because of uncertainties regarding weather and on-site conditions, extension of the fisheries window up to October 15, 1994 may be necessary to complete construction. Any extension request will be coordinated with the Department of Fish and Wildlife. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. The contractor will prepare a construction mitigation plan, outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Specific work proposed: The City of Renton proposes to perform the following activities: 1 . Remove soil blocking the existing box culvert under Interstate 405 (1-405) for the purpose of creating a new inlet and outlet channel for the culvert that will allow flows in Springbrook Creek to pass through. 2. Widen a portion of the existing Springbrook Creek channel between SW Grady Way to SW 16th Street leading to and from the 1-405 box culvert. The existing Springbrook Creek channel parallel to the proposed 1-405 inlet and outlet channel will be preserved to convey some flows in larger storm events, provide needed flood storage, and create off-stream habitat for fish and wildlife use. •r Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 6 3. Regrade and stabilize a segment of nearly vertical, eroded stream bank on the west side of the existing channel immediately north of 1-405. 4. Install a new pedestrian trail culvert crossing over the south 1-405 roadside ditch that is located on the west side of the existing Springbrook Creek channel. The pedestrian trail will provide a link across the 1-405 corridor to connect the existing and proposed pedestrian and bicycle trails to the north of SW Grady Way and south of SW 16th Street. The maximum depth of fill needed for the pedestrian trail culvert crossing of the 1-405 south roadside ditch is approximately 10 feet. 5. Install five fish habitat structures within the low flow channel to provide resting areas and increased habitat diversity. Two of the structures will be placed within the existing ordinary high water mark of the Springbrook Creek channel. The proposed structures consist of instream boulder groups as well as tree trunk segments anchored into the stream bank and projected out into the channel. 6. Plant dwarf willows along the edge of the low flow channel to provide shade from solar exposure. The willows also protect against erosive flows while presenting minimal restriction of the channel flood conveyance capacity. 7. Plant shrubs to create two wildlife habitat areas adjacent to the channel. The plantings will increase the quality and diversity of habitat above that currently existing in the channel area. 8. Install stream bypass and dewatering systems to maintain construction areas sufficiently dry to complete the proposed work. The proposed channel construction south of the 1-405 box culvert consists of 215-feet of new channel and 200-feet of widened channel construction. The 215-foot new channel segment extends south from the southern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 200-feet of widened channel consists of a 160-foot, fully widened, segment that extends south from the new channel to the south end of the SW 16th Street bridge, and a 40-foot transition segment to blend the fully widened segment to the existing channel south of SW 16th Street. The proposed channel construction north of the 1-405 box culvert includes 50-feet of new channel, 120-feet of fully widened channel, and 90-feet of stream bank regrading and stabilization. The 50-foot new channel segment extends north from the northern end of the 1-405 box culvert to intersect with the existing Springbrook Creek channel. The 120-foot, fully widened, segment of the existing channel extends downstream, north of the new channel, to connect to the southern entrance of the SW Grady Way box culvert. The 90-foot length of stream bank to be stabilized is located on the west side of the existing channel, beginning immediately north of 1-405 and extending north to blend with the new west bank of the proposed widened channel section. To maintain fish passage, a low flow channel with 12-foot bottom width and 3 horizontal to 1 vertical side slopes is included in the design of the new and widened channels. The proposed low flow channel connects to one of the five bays of the I- 405 and SW Grady Way box culverts which have a lower bottom elevation.than the other bays. The channel design slope is very gradual at 0.02%, and the bottom elevation varies from 0.09-feet at SW Grady Way to 0.24-feet at SW 16th Street. The Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 7 existing channel bottom elevation varies from 0 to 2 feet from SW Grady Way to SW 16th Street (1929 NGVD datum). The depth of the low flow channel is 2.5-feet and the overall top width is 27-feet. The maximum depth of excavation from existing to finish grade is approximately 16-feet. The proposed main channel, including the low flow channel, averages 65-feet in width. The design slope of the main channel is very gradual at 0.02%, and the bottom elevation varies from 2.59-feet at SW Grady Way to 2.74-feet at SW 16th Street (1929 NGVD datum). The design channel side slopes vary between 2 or 3 horizontal to 1 vertical. Three concrete wing walls totaling 100-feet in length and one rock-filled gabion wing wall 80-feet in length will be installed at the entrances and exits to the SW 16th Street bridge, 1-405 box culvert, and SW Grady Way box culvert. However, these structures are located out of the existing ordinary high water mark of Springbrook Creek. To construct the proposed channel, the existing material necessary to achieve the proposed channel section subgrade will be removed. The total amount of excavation is estimated to be 15,700 cubic yards (CY), of which an estimated 2,100 CY will be removed from the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. Subgrade is generally 1.5-feet below the proposed finish grade, with a portion of the proposed channel directly adjacent to the Oakesdale Avenue SW underpass and underdrain system over excavated to 5-feet below the proposed finish grade to allow placement of a watertight PVC membrane. The underdrain system, which protects the Oakesdale Avenue SW underpass from groundwater seepage onto the roadway, must be protected from the short-circuiting of water from the proposed channel which will be located directly adjacent to the underdrain system. To prevent this piping of water from the channel through the soil and into the Oakesdale Avenue SW underdrain system, which is lower in elevation than the proposed channel bottom, the membrane will be connected to the Oakesdale Avenue SW P-1 channel retaining wall and extended west across the width of the channel (CH2M Hill, 1987). This increases the flow path that water from the channel must travel to reach the underdrain system and will effectively reduce the potential for removal of finer particles from supporting soils due to piping and overburdening of the underdrain pump system. The use of sheet piling driven into the channel bottom to lengthen the flow path was also considered, but was not selected because the piling may reach refusal too soon to provide effective protection. The total estimated quantity of fill for the channel work, including filter material and rip rap, is 8100 CY, of which an estimated 1,700 CY will be placed in the area defined by the ordinary high water mark of the existing channel of Springbrook Creek. A total of 3 1/2-feet of fill material will be placed on the PVC membrane to achieve subgrade. To reach finish grade on a portion of the channel, including the low flow channel, a total of 1/2-foot of sandy filter material and 1-foot of clean, loose rip rap will be placed on the subgrade. Other areas of the channel not receiving rip rap that are subject to potential erosive flows will be brought to finish grade with fill material and overlain with an excelsior blanket. This will protect the exposed soil and allow vegetation to become established to further protect against erosion. Construction of the pedestrian trail shown in the plans will require an estimated 500 CY of fill to achieve subgrade, of which 40 CY will be placed in the area defined by - Wetland A. 4 , Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 8 Fill material will be well graded sand to silty sand. The material will be from an approved gravel mining site and will arrive to the site via 1-405, SW Grady Way, Oakesdale Avenue SW, and SW 16th Street. The specific source of the fill material and haul route is unknown at this time, but will be provided as a part of the final construction management plan, and will be submitted for approval to the City Development Services Division. Mitigation: A copy of the Mitigation Measures document issued by the City of Renton as required under the State Environmental Policy Act is included as Appendix A. An overview of the special plans and reports to be prepared for the project is provided in a subsequent section of this project narrative. The proposal includes fish habitat components developed in consultation with the Washington Department of Fish and Wildlife. Bankers dwarf willow cuttings (salix cotteti) will be planted on 2-foot centers along both banks of the low flow channel to provide shading and visual screening for migrating fish. The drawf willow does not develop into a large tree that would present an obstruction to the flood conveyance capacity of the channel, but will temporarily lay over during times of high flow. Five in-stream structures of three different types are also included in the project design to create resting and hiding areas for migrating fish. These structures include the following: A. Placing groups of three 24-inch diameter boulders in the low flow channel. B. Placing large diameter boulders in the low flow channel with rock rip rap around the boulders and up one of the side slopes of the channel. C. Anchoring a section of tree trunk with the root wad exposed in the channel bottom at a 30-degree angle to the cross section of the channel. Two wildlife areas are also to be established with the planting of approximated 300 shrubs at 3-foot centers. The shrub type will be Pacific Serviceberry, Tall Oregon Grape, Redosier Dogwood, and Common Chokecherry. These two areas will have four rows parallel to the channel with groups of 3 to 5 plants of the same species staggered between the rows. Special Plans and Report: The following special plans and reports will be prepared to ensure that potential impacts are avoided if possible. Where impacts cannot be avoided, the plans and reports will identify methods to minimize anticipated impacts and to ensure that these impacts will be mitigated. Erosion control plan. Before any construction activity occurs, a pre-construction meeting with the contractor will be held with the project engineer and the City. Prior to the meeting, the contractor shall provide to the City and Engineer an erosion control plan for review and approval. The plan shall be based on the King County Surface Water Design Manual, as adopted by the City of Renton, proper construction practices, and any measures detailed in the contract plans and specifications. The contractor will • Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 9 also be responsible for addressing any state and federal permit conditions required for the project. Erosion and sedimentation controls, such as straw bale barriers, silt fences, and straw mulch for temporary protection of exposed soils should be applied during construction. Stabilized construction entrances and washpads should be installed at the beginning of construction and maintained for the duration of the project. As construction progresses and unexpected or seasonal conditions dictate, the contractor shall anticipate that more erosion and sedimentation control facilities will be necessary to insure complete siltation control on the project site. It shall be the obligation and responsibility of the contractor to revise or modify the erosion control facilities to meet any new conditions that may be created by construction activities and to provide additional facilities, over and above minimum requirements, as may be needed to protect adjacent properties and water quality of the receiving drainage system. Any construction within the existing channel will be restricted to during the summer months of the fisheries window from June 15 - September 15 as approved and in accordance local, state, and federal permit conditions. Approximately 55 working days is estimated to be needed from the start of excavation to establishment of final grade and permanent stabilization. As noted below the contractor will prepare a construction mitigation plan outlining in detail the construction schedule and phasing for review and approval of the City and project engineer. The time and extent of disturbance within the channel shall be kept to a minimum. Project design final stabilization measures include a 1 to 2-foot deep rock rip rap protective layer placed over disturbed areas under and adjacent to the SW 16th street bridge, the low flow channel area, and a portion of the west bank of the channel between 1-405 and SW Grady Way. A 0.5-foot deep layer of filter material will be placed under the rip rap to prevent washing of any finer material from the underlying soil. Wire mesh gabions will be placed along a portion of the west bank just north of the SW 16th Street bridge to protect against erosive flows. A layer of filter material will be placed behind the gabions to prevent washing of finer material from the protected bank. All disturbed areas will be seeded with a grass mixture immediately following construction, except the low flow channel and within the drip line of bridges. Seeding shall be started as soon as definable segments of the excavated channel are completed as determined by the Engineer. Permanent seed mixtures shall be applied between April 1 to October 15. Winter seeding shall be applied outside the permanent seeding dates as needed, and followed with permanent seeding the next spring as approved by the Engineer. Following permanent seeding, a portion of the area outside the low flow channel that was disturbed during construction will be covered by an excelsior blanket for erosion control and to aid vegetative establishment. Construction mitigation plan. Prior to the preconstruction meeting the contractor shall also provide to the City and Engineer a construction mitigation plan outlining the construction schedule and phasing, the hours of operation, the proposed earthwork material source/disposal site and haul route, and any measures to be implemented to minimize the impact of construction to surrounding property owners and public streets. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 10 Dewatering plan. Ground water withdrawal for temporary dewatering purposes is anticipated to be necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for the proposed channel. Geotechnical reports for other projects in the project area describe ground water levels at relatively shallow depths (CH2M Hill, 1987; GeoEngineers, 1984 and 1988; Hong, 1986). Because of potentially high ground water conditions the contractor for the proposed project will be required to determine if conditions at the time of construction are low enough to allow construction. If not, the contractor will be required to construct well points at strategic locations in the project area to draw down the water table sufficiently. Before any dewatering the contractor will be required to submit a dewatering plan for City and SCS review. The amount of ground water to be withdrawn is a function of the soil conditions, water table elevation, required drawdown, and wellpoint location and depth. Therefore, the number of wellpoints and the amount of groundwater that will be withdrawn cannot be estimated at this time. All ground water withdrawals are to be directed, if conditions permit, into the METRO sanitary sewer, temporary settling pond, or other device to minimize the discharge of iron rich water into Springbrook Creek. Springbrook Creek bypass plan. Springbrook Creek will be routed to bypass the work area while construction is in progress within the existing stream channel. The bypass is anticipated to be accomplished by pumping or gravity flow through a piped conveyance or open channel, or some combination of these methods. This is necessary in order to maintain the work area sufficiently dry for the grading, placement, and compaction of material needed for the proposed channel. Bypassing the surface water flow around disturbed areas will also minimize the erosion potential of the exposed soils and protect the water quality of Springbrook Creek. The sequence and timing of the any bypass is to be contractor determined, subject to the review of the City and SCS. Any proposed surface water bypass will also be reviewed by the Washington Department of Fish and Wildlife and coordinated with adjacent property owners. It is anticipated that construction of the channel north and south of 1-405 will occur in two separate phases so that the bypass distance will be reduced from that required to bypass the entire reach. The actual quantity of water to be bypassed depends upon the weather conditions at the time of construction. By working in the summer months the amount of flow to be bypassed will be minimized. Sediment quality report. Because the reach of Springbrook Creek within the project area is downstream of potential point and non-point pollution sources, the sediments in the stream bed will be analyzed to determine if contaminants exist. Contaminants are known to be present in the Springbrook Creek system and have been monitored at several locations (Renton, 1993c). One of the monitoring stations was at SW 16th Street bridge. Contaminant levels in sediments sampled at this station in 1992 were determined to be below Model Toxics Control Act Cleanup Regulation (WAC-173-340) cleanup levels. These levels apply to sediments disposed of on land other than in a permitted landfill. Dredging or other construction disturbance as part of this project could cause contaminated sediments that may be in the project reach to be suspended and carried downstream. Contaminants that may be in the dredge spoils could also be a potential health risk if not disposed of properly. Although sampling at SW 16th Street indicated that special disposal of the sediments would not be required, SCS has contracted with Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 11 Herrera Consultants to test a surface sample and a sample at one foot depth at a total of four locations within the project area. The field work was complete at the end of September and a final report of the results is expected in April 1994. References: CH2M Hill. 1987. Geotechnical Report, Oakesdale Avenue. Bellevue, WA. Prepared for City of Renton, Renton, WA. Federal Emergency Management Agency. Federal Insurance Administration. 1989a. Flood Insurance Rate Maps, King County, WA, and Incorporated Areas. September 29. Bothell, WA. Project Narrative 1-405 Box Culvert/P-1 Channel Improvement Project Page 12 1989b. Flood Insurance Study, King County, WA, and Incorporated Areas, Volumes 1, 2, and 4. September 29. Bothell, WA. FEMA. See Federal Emergency Management Agency. GeoEngineers. 1984. Report of Geotechnical Investigation, Box Culvert, SW Grady Way. Bellevue, WA. Prepared for City of Renton, Renton, WA. 1988. Report of Geotechnical Investigation, Proposed Box Culvert, SW 16th Street. Bellevue, WA. Prepared for City of Renton, Renton, WA. Hammond, Collier, Wade-Livingstone. 1992. City of Tukwila Nelson Place/McLeod/Boeing CSTC Storm Drainage Study Technical Report. Seattle, WA. Prepared for City of Tukwila, Tukwila, WA. Hong Consulting Engineers. 1986. Geotechnical Engineering Evaluation for P-1 Channel - SR405 Box Culvert. Lynnwood, WA. Prepared for ABKJ, Seattle, WA. Northwest Hydraulic Consultants. 1991 . East Side Green River Watershed Plan, Hydrologic Analysis. Seattle, WA. Prepared for R. W. Beck & Associates and City of Renton, Renton, WA. R. W. Beck and Associates. 1992. East Side Green River Watershed Plan, Hydraulic Analysis Report. Seattle, WA. Prepared for City of Renton, Renton, WA. Renton. 1990. Shoreline Master Program. Renton, WA. 1993a. Interim Zoning Code. Renton, WA. 1993b. Interim Land Use Element of the Comprehensive Plan. Renton, WA. 1993c. Black River Basin Water Quality Management Plan. Seattle, WA. Prepared by R. W. Beck and Associates and Herrera Environmental Consultants in association with Jones & Stokes Associates, Inc. SCS. 1973. Soil Survey of the area of King County, WA. Washington, DC. . 1989. Letter to Rod Den Herder summarizing biological assessment of the SW Grady Way to SW 16th Street realignment. June 1 . Spokane, WA. 1993a. Letter to Roderick Den Herder summarizing wetlands determination - SW Grady Way to SW 16th Street. June 1 . Olympia, WA. . 1993b. Letter to Roderick Den Herder with additional classification of wetland determination for ditch on the south side of 1-405 - SW Grady Way to SW 16th Street. November 3. Olympia, WA. . 1993c. Letter to Roderick Den Herder with additional classification of wetland determination for ditch on the south side of 1-405 - SW Grady Way to SW 16th Street. November 29. Olympia, WA. H:DOCS:94-227:SSW:ps 1 APPENDIX A DETERMINATION OF NON-SIGNIFICANCE-MITIGATED MITIGATION MEASURES APPLICATION NO(S): LUA-94-001,ECF,SP,SA,V,SM,CU APPLICANT: City of Renton, Surface Water Utility PROJECT NAME: 1-405 Box Culvert/P-1 Channel Improvement (Springbrook Creek) DESCRIPTION OF PROPOSAL: The purpose of this proposed project is to complete the construction of P-1 Channel improvements from SW Grady Way to SW 16th Street. The proposed project is the final segment of a series of flood control improvements to the Springbrook/P-1 Channel made from 1984 to 1990 with the assistance of the United States Department of Agriculture Soil Conservation Service (SCS). The existing Springbrook Creek stream channel, which conveys drainage from a 22 square mile watershed, directs flows north under the SW 161h Street bridge toward the 1-405 box culvert. However, since the corresponding channel improvements to direct flow into the box culvert were not constructed, fill now blocking the 1-405 box culvert forces the flow around the box culvert to the west and underneath the 1-405 bridge adjacent to the box culvert. Construction of these improvements is planned now to improve the functioning of the channel. A pedestrian trail will also be established pursuant to the City's Master Trails Plan. LOCATION OF PROPOSAL: Springbrook Creek/SW Grady to SW 16th St. MITIGATION MEASURES: The Environmental Review Committee issued a Determination of Non- Significance - Mitigated with the following Mitigation Measures: 1. To address construction impacts of the proposed project on the natural and built environment, the applicant shall submit a construction mitigation plan for approval of the City and SCS. 2. To minimize the potential impact of temporarily routing Springbrook Creek to bypass the work area and implementing dewatering operations while construction is in progress within the existing stream channel, the applicant shall submit a bypass plan and dewatering plan for approval. 3. To address construction impacts of the proposed project on the natural and built environment, the time and extent of disturbance within the channel shall be kept to a minimum. As soon as definable segments of the work are determined to have been completed, or as unexpected and seasonal conditions dictate, disturbed areas are to be stabilized using the methods proposed in the project design, such as seeding, plantings, rip rap, and erosion control blankets. 4 To minimize the impact of temporarily preventing passage of fish through the channel, construction within the existing channel will be restricted to the period between June 15 - September 15 as approved and in accordance with permit conditions to be established by the Washington State Department of Fisheries. 5. In order to determine if pollutants that may be in sediments to be removed during the project are below levels requiring special disposal and/or if additional sediment testing is required, the applicant shall submit a sediment monitoring report to the City and SCS for review. 6. To minimize potential impact to cultural resources that may be present in the project area, the individuals involved with construction will be required to watch closely for buried artifacts and remains, and if found, cease work and provide notification to SCS, the City, and the Washington State Historic Preservation Officer to determine the course of action. Advisory Notes to Applicant: The following notes are supplemental information provided in conjunction with the environmental determination. Because these notes are provided as information only,they are not subject to the appeal process for environmental determinations. 1 In accordance with standard contract requirements, normal working hours will be between 7:00 a.m. and 6:00 p.m., Monday through Friday. Permission to work other hours and times must be obtained from the City and may be subject to the City Noise Level Regulations and other conditions. The construction mitigation plan should include advance notification and other provisions as needed to minimize the impact of construction on the occupants of the existing house adjacent to and west of the project area. 2. To minimize the potential for impact to existing structures, the applicant and construction contractor shall coordinate with METRO and WSDOT as applicable. 3. The mitigation measures included in this determination were proposed by the applicant in the project application documents. It is the responsibility of the applicant to ensure that all mitigation is implemi rated as proposed, and that any additional information requiring review is submitted and approved prior to constn tion. mitmeas - 1 - 02/03/94 CITY OF RENTON MEMORANDUM Date: March 15, 1994 To: Ron Straka, Surface Water Utility From: Lenora Blaumanf� Subject: 1-405 Culvert/P-1 Channel Improvement (Springbrook Creek) LUA-94-001,ECF,SP,SA,V,SM,CU This memo is to inform you that the environmental review comment and appeal periods have ended for the Determination of Non-Significance -Mitigated for the above-referenced project. Since no appeals were filed, this decision is final. The date of Tuesday, April 5, 1994, at 9:00 a.m., has been set for a public hearing to review the land use permit application. The hearing, before Mr. Fred Kaufman, Renton Hearing Examiner, will be held in the Municipal Court Building, adjacent to City Hall, Renton, Washington. The applicant, in this case the City, is required to be represented at the public hearing. Scott Woodbury and you should attend. A copy of the Preliminary Report to the Hearing Examiner will be made available to you one week before the hearing. Please contact Georgia Shives, ext. 5582, or Sandi Seeger, ext. 5581, regarding picking up or receiving the staff report. If you have any questions I can answer, please call me at ext. 6181. Thanks. 1 HEXMEMO.DOC