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HomeMy WebLinkAboutLUA98-001 V7Washington State Northwest Region 11. Department of Transportation 15700 Dayton Avenue North Sid Morrison P.O. Box 330310 Secretary of Transportation Seattle,WA 98133-9710 (206)440-4000 DEVELOPMENT PLANNINC CITY OF RENTON MAR 0 2 1998 DATE: February 13, 1998 RECEIVED TO: Mark Pywell City of Renton, Project Manager 200 Mill Avenue South Renton WA 98055 Subject: SR 405 MP 2.06 CS 1743 Dertermination of Nonsignificance- SW 23rd Drainage Improvement Project Aira.,,,t File No.LUA-98-001,ECF,SM FROM: Robert A. Josephsdn, PE, Manager of Planning & Local Coordination Washington State Department of Transportation Northwest Region 15700 Dayton Avenue North, MS 122 P. O. Box 330310 Seattle, WA 98133-9710 Thank you for giving us the opportunity to review this project, which is located SW 23rd Street from Springbrook to East Valley Road. Our response is below: We have reviewed the subject document and haver no further comments. The project will have no significant impact on the state highway system. If you have any questions, please contact Don Hurter at 440-4664 or Vickie Erickson at 440-4915 of my Developer Services section VEE:vee File Name rroM STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washington 98008-5452 • (206) 649-7000 February 23, 1998 Scott Woodbury Surface Water Utility City of Renton 200 Mill Avenue South Renton, WA 98055 Dear Mr. Woodbury: Re: City of Renton Permit # LUA-98-001 CITY OF RENTON SURFACE WATER UTILITY- Applicant Shoreline Substantial Development Permit # 1998-NW-40009 The subject Shoreline Management Substantial Development Permit, to replace two existing 18 inch culverts with one 24 inch box culvert and perform routine maintenance, has been filed with this office by the City of Renton on February 6, 1998. The development authorized by the subject permit may NOT begin until the end of the 21-day appeal period, February 27, 1998. The Shorelines Hearings Board will notify you by letter if this permit is appealed. Other federal, state, and local permits may be required in addition to the subject permit. If this permit is NOT appealed, this letter constitutes the Department of Ecology's final notification of action on this permit. Sincerely, II/IAA- 1 • 14-1'I'VViy-- Ann E. Kenny, Shorelands Specialist Shorelands and Environmental Assistance Program AEK: aek SDP.DOC cc: James D. Hanson, City of Renton CITY OF RENTON MEMORANDUM Date: February 19, 1998 To: I '" Scott Woodbury/Surface Water Utility ,From: 'ark R. Pywell, AICP Development Planning Subject: SW 23rd Drainage Improvement Project No. LUA-98-001,ECF,SM We just wanted to inform you that the comment and appeal periods have ended for the subject project's Determination of Non-Significance. No appeals were filed on the ERC determination. The Shoreline Permit was mailed to DOE on February 5, 1998. If you have any questions, please feel free to contact me at 277-5586. FIB DOC CITY OF RENTON: CURRENT PL ANNING DIVISION AFFIDAVIT OF SERVICE BY MAILING ..... On the 5"K'1 day of ret*'u . , 1998, I deposited in the mails of the United States, a sealed envelope containing Sirtove.itfte. t'Y documents. This information was sent to: Name Representing -htt)v4Nai CV. _ Sustt u►woocL ou..iti tin CCCiN of 1ZeiNhoA (Signature of Sender) lo._l(-• S&„.511c r STATE OF WASHINGTON ) ) SS COUNTY OF KING ) I certify that I know or have satisfactory evidence that �Anch.ci signed this instrument and acknowledged it to be his/her/their free and voluntary act for `!He uses and purposes mentioned in the instrument. Dated: �� OI.I f ct tc! Notary PubISC in and for the State of3Nashington Notary (Print) MARILYN KAMCHFFF My appointment ee Project Name!5UJ 23 'OvuKilkic ImprovemeK13 Project Number: ` . 98 .001 t StM,Ecf NOTARY.DOC %, , CIT"bF RENTON mil. I Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator February 5, 1998 State Department of Ecology Northwest Regional Office 3190 160th Ave. SE Bellevue, WA 98008-5452 SUBJECT: Shoreline Management Substantial Development Permit for File No. LUA-98-001;SM Gentlemen: Enclosed is the Shoreline Substantial Development Permit for the above referenced project. The permit was issued by the City of Renton on February 4, 1998. We are filing this action with the Department of Ecology and the Attorney General per WAC 173-14-090. Please review this permit and attachments and call me at (425) 277-5586 if you have any questions or need additional information. Sincerely, Mark R. P ell, AICP Project anager Enclosures: Copy of Original Application Affidavit of Public Notice/Publication Site Plan SEPA Determination cc: Office of Attorney General City of Renton, Transportation Systems City of Renton, Utility Systems Applicant Document4 200 Mill Avenue South - Renton, Washington 98055 ®This paper contains 50%recycled material,20%post consumer • • CITY OF RENTON SHORELINE MANAGEMENT ACT OF 1971 PERMIT FOR SHORELINE MANAGEMENT SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT APPLICATION NO.: LUA-98-001,ECF,SM DATE RECEIVED: January 5, 1998 DATE OF PUBLIC NOTICE: January 12, 1998 DATE APPROVED: January 27, 1998 DATE DENIED: N/A TYPE OF ACTION(S): [X] Substantial Development Permit [ ] Conditional Use Permit [ ] Variance Permit Pursuant to Chapter 90.58 RCW, the City of Renton has granted/denied a permit: This action was taken on the following application: APPLICANT: Surface Water Utility/City of Renton PROJECT: SW 23rd Street Drainage Improvement Project DEVELOPMENT DESCRIPTION: The City of Renton proposes to replace an existing 18" culvert under the Olympic Pipeline crossing of SW 23rd Street channel with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. Location: SW 23rd Street from Springbrook Creek to East Valley Road. LEGAL DESCRIPTION: North 200 feet of Sec. 30, T23N, R5E SEC-TWNP-R: Sec. 30, T23N, R5E WITHIN SHORELINES OF: Springbrook Creek APPLICABLE MASTER PROGRAM: City of Renton The following section/page of the Master Program is applicable to the development: Section Description Page 5.04 Urban Environment page 22. 7.06 Dredging page 28. 7.18.04 Local Utilities--Specifications page 40. SHRLNPRM.DOC City of Renton P/B/PW Department Shoreline Substantial Development Permit Page 2 of 3 Development of this project shall be undertaken pursuant to the following terms and conditions: 1. The applicant shall maintain best management practices to prevent soil erosion to the extent possible. 2. The applicant shall restore any designated wetland area disturbed by this construction of this project. 3. The applicant shall coordinate construction services with Olympic Pipeline to ensure that the project does not breech the existing line in this area. This permit is granted pursuant to the Shoreline Management Action of 1971 and pursuant to the following: 1. The issuance of a license under the Shoreline Management Act of 1971 shall not release the applicant from compliance with federal, state, and other permit requirements. 2. This permit may be rescinded pursuant to Section 14(7) of the Shoreline Management Act of 1971 in the event the permittee fails to comply with any condition hereof. 3. A construction permit shall not be issued until thirty (30) days after approval by the City of Renton Development Services Division or until any review proceedings initiated within this thirty (30) day review period have been completed. g/fH .eite-, pr---..___ z/9/915 Planning/B i ublic Works Administrator Date SHRLNPRM.DOC City cf Renton PB/PW Department Shoreline Substantial Development Permit Page 3 of 3 THIS SECTION FOR DEPARTMENT USE ONLY IN REGARD TO A CONDITIONAL USE OR VARIANCE PERMIT DATE RECEIVED: APPROVED: DENIED: If Conditional Use, Section of the City's Shoreline Master Program authorizing the use: If Variance, Section(s) of the City's Shoreline Master Program being varied: This Conditional UseNariance permit is approved/denied by the Department pursuant to Chapter 90.58 RCW. Development shall be undertaken pursuant to the following additional terms and conditions: Date Signature of Authorized Department Official cc: Attorney General's Office City of Renton, Plan Review(Neil Watts) City of Renton, Surface Water Utility(Ron Straka) Applicant SHPLNPRM.DOC CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS MEMORANDUM DATE: February 3, 1998 TO: Gregg Zimmerman FROM: Mark R. Pywell SUBJECT: SW 23rd Street Drainage Improvements LUA-98-001,ECF,SM The proposed project is consistent with the Shoreline Master Program. For the most part this project could be exempt from the Shoreline Program in that it is routine maintenance of an existing drainage channel. However, the project does include the installation of a new culvert and the replacement of existing culverts that were allowed to deteriorate so that they did not function fully in the manner that was intended. By issuing a permit, we are fully disclosing the work that will be completed and avoiding the risk of someone challenging the project in front of the hearing board. The dredging that will occur as part of this project is for flood control that is permitted under Section 7.06 of the Shoreline Master Program. Section 7.18.04 requires the use of storm sewage drainage system. The use of open channels that are lined with plant materials allows for their use as a fish passage and also helps to remove harmful pollutants from the water. This project will not preclude any access to a water body that is available at this time. CONCURRENCE DATE 2/ /7. NAME I DATE J fl zsvr JM• der \\TS_SERVER\SYS2:\COMMON\-H:\DIVISION.S\DEVELOP.SER\DEV&PLAN.ING\PROJECTS\98-001.MP\GREGGMMO.DOC\mp CITY OF RENTON CURRENT PLANNING DIVISION AFFIDAVIT OF SERVICE BY MAILING On the Z `' day of 14\lL0.Ki , 1997, I deposited in the mails of the United States a sealed envelope containing �IRC. CleteAMINCLIICIAS documents. This information was sent to: Name Representing Departs nent of Ecology Don Hi rter WSDOT KC Wa.;tewater Treatment Division Larry Fisher Washington Department of Fisheries David I'. Dietzman Department of Natural Resources Shirley Lukhang Seattle Public Utilities Duwaniish Indian Tribe Rod M ilcom Muckleshoot Indian Tribe Joe Jainga Puget Sound Energy (Sigmiture of Sender) cb ,t_VC. STATE OF WASHINGTON ) SS COUNTY OF KING ) I certify that I know or have satisfactory evidence tha c/\.& k. ,fir c., signed this instrument and acknowledged it to be his/her/their free and voluntary act for tf uses and purposes mentioned in the instrument. ` / Dated —Av� cDril l�1 c1 "�2 C'v} JI 4-)r)r- '.,p f Notary Public i and for the State of W ngton Notary (Print) MARILYN KAMCHEFF My appointment expires: 9 Project Name: SW 234 gt'rtc:� ►Z- ��qG time• Project Number: ujf% Oot , 1 Sv NOTARY DOC • CITA )F RENTON Planning/Building/Public Works Department Jesse T,nner,Mayor Gregg Zimmerman P.E.,Administrator January 28 1998 Washington State Department of Ecology Environmental Review Section PO Box 47703 Olympia, V,'A 98504-7703 Subject: Environmental Determinations Transmittel herewith is a copy of the Environmental Determination and Environmental Checklist for the following project reviewed by the Enviror mental Review Committee(ERC)on January 27, 1998: DETERMINATION OF NON-SIGNIFICANCE SW 23RD DRAINAGE IMPROVEMENT PROJECT LUA-98-001,ECF,SM Tt a project proposes to replace two existing 18"culverts under the Olympic Pipe Line drainage channel crossing just west of Li id Avenue at SW 23rd Street with a box culvert. The proposal includes installation of a new 24" culvert across a private access road at SW 23rd Street just east of Lind Avenue. The project also proposes to perform routine maintenance (v::getation and sediment removal)of the channel along SW 23rd Street from Springbrook Creek to East Valley Road. A Shoreline Substantial Development Permit is required for this project. SEPA review for the box culvert and the routine channel maintenance to be completed between Springbrook Creek and Lind Avenue was completed as part of the East Side Green River Watershed Project Plan and EIS under LUA-95-205, ECF (Final EIS, Sept. 1997). Location: SW 23rd Street from Springbrook Creek to East Valley Road. Comment; regarding the environmental determination must be filed in writing on or before 5:00 PM February 16, 1998. Any aggrieved I:terson feeling that the environmental determination of the Environmental Review Committee is based on erroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence which could not be reasonably available at the time of the determination may submit written comments.After review of the comments, if Environmental Review Committee finds there is not sufficient evidence to amend its original determination, then there will be no further extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed wit): Jana Huerter, Land Use Review Supervisor, City of Renton Development Services Division, 200 Mill Avenue South, Renton, WA 98055. If an appeal of the environmental determination is also filed with the Hearing Examiner during the same 15-day comment F eriod, then the Environmental Review Committee will first take action on the request for reconsideration and the appellant will be notified that the appeal is on hold pending the Committee's decision on the reconsideration request. The City will notify the appellant/F erson requesting reconsideration and parties of record and the Hearing Examiner of the Environmental Review Committee s final determination. The appeal process will then be continued unless the appellant notifies the Hearing Examiner in writing that he wishes to withdraw the appeal. Appeals of the environmental determination must be filed in writing on or before 5:00 PM Fl?bruary 16, 1998. Appeals must be filed in writing together with the required$75.00 application fee with: Hearing Examiner, 72,ity of Renton, 200 Mill Avenue South, Renton, WA 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425)-235-2501. If you have questions, please call me at(425)277-5586. For the Environmental Review Committee, Mark R. Pp , AICP Project Ma lager cc: K ng County Water Pollution Control Division, Metro Ls,trry Fisher, Department of Fisheries David F. Dietzman, Department of Natural Resources Don Hurter, Department of Transportation S iirley Lukhang, Seattle Public Utilities Duwamish Tribal Office Rod Malcom, Fisheries, Muckleshoot Indian Tribe(Ordinance) Joe Jainga, Puget Sound Energy AGNC VT TP_Tvlo 200 Mill Avenue South - Renton, Washington 98055 This oaoer contains 50%recycled material.20%post consumer Ii w , CITY OF RENTON MEMORANDUM Date: January 28, 1998 To: Scott Woodbury/Surface Water Utility Fr nit: "'ark R. Pywell, AICP/Development Planning St bject: SW 23rd Drainage Improvement Project Project No. LUA-98-001,ECF,SM Or behalf of the Environmental Review Committee (ERC), I would like to inform you that they have completed their review of your project. The Committee, on January 27, 1998, decided that the project will be issued a Determination of Non-Significance (DNS). Tr e City of Renton ERC has determined that it does not have a probable significant adverse impact on trio environment. An Environmental Impact Statement (EIS) is not required under RCW 43.21 C.030(2)(c). This decision was made by the ERC under the authority of Section 4-6-6, Renton Municipal Code, after review of a completed environmental checklist and other information, on file with thu lead agency. This information is available to the public on request. C<imments regarding the environmental determination must be filed in writing on or before 5:00 Pr1 February 16, 1998. Any aggrieved person feeling that the environmental determination of the Environmental Review Committee is based on erroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence which could not be reasonably available at the time of the determination may submit written comments. After review of the comments, if Environmental Review Committee finds there is not sufficient evidence to amend its original determination, then there will be no further extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed with: Jana Huerter, Land Use Review Supervisor, City of Renton Development Services Division, 200 Mill Avenue South, Renton, WA 98055. If an appeal of the environmental determination is also filed with the Hearing Examiner during the same 15-day comment period, then the Environmental Review Committee will first ta•ce action on the request for reconsideration and the appellant will be notified that the appeal is on hold pE riding the Committee's decision on the reconsideration request. The City will notify the appellant/person requesting reconsideration and parties of record and the Hearing Examiner of the Environmental Review Committee's final determination. The appeal process will then be continued urless the appellant notifies the Hearing Examiner in writing that he wishes to withdraw the appeal. Appeals of the environmental determination must be filed in writing on or before 5:00 PM February 16, 1998. Appeals must be filed in writing together with the required $75.00 application fee wit: Hearing Examiner, City of Renton, 200 Mill Avenue South, Renton, WA 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425)-235-2501. The Shoreline Substantial Development Permit (SM) will be forwarded to DOE on February 12, 1998. TI its will allow City and DOE comment periods to end on the same date. If you have any questions or desire clarification of the above, please call me at 277-5586. dnr.mm r ! CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE ADVISORY NOTES APPLICATION NUMBER: LUA-98-001,ECF,SM APPLICANT: City of Renton/Surface Water Utility PROJECT NAME: SW 23rd Street Drainage Improvement Project DESCRIPTION OF PROPOSAL: The project proposes to replace two existing 18" culverts under the Olympic Pipe Line drainage channel crossing just west of Lind Avenue at SW 23rd Street with a box cul,iert. The proposal includes installation of a new 24" culvert across a private access road at SW 23rd Str;;et just east of Lind Avenue. The project also proposes to perform routine maintenance (vegetation and sediment removal) of the channel along SW 23rd Street from Springbrook Creek to East Valley Raid. A Shoreline Substantial Development Permit is required for this project. SEPA review for the box cul rent and the routine channel maintenance to be completed between Springbrook Creek and Lind Avenue was completed as part of the East Side Green River Watershed Project Plan and EIS under LUA-95-205, ECF (Final EIS, Sept. 1997). LOOATION OF PROPOSAL: SW 23rd Street from Springbrook Creek to East Valley Road Adi isory Notes to Applicant: Th4 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. Emergency access is to be maintained at all times. t410TIOL ENVIRONMENTAL DETERMINATION POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION PROJECT NAME: SW 23RD DRAINAGE IMPROVEMENT PROJECT PROJECT NUMBER: LUA-98-001,ECF,SM The project proposes to replace two existing 18'culverts under the Olympic Pipe Line drainage channel crossing just west of Lind Avenue al SW 23rd Street with a box culvert. The proposal includes installation of a new 24'culvert across a private access road at SW 23rd Street just east of Lind Avenue. The project also proposes to perform routine maintenance(vegetation and sediment removal)of the channel along SW 23rd Street from Springbrook Creek to East Valley Road. A Shoreline Substantial Development Permit is required for this project. SEPA review for the box culvert and the routine channel maintenance to be completed between Springbrook Creek and Lind Avenue was completed as part of the East Side Green River Watershed Project Plan and EIS under LUA-95-205,ECF(Final EIS,Sept. 1997). Location:SW 23rd Street from Springbrook Creek to East Valley Road. THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERC) HAS DETERMINED THAT THE PROPOSED ACTION DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. Comments regarding the environmental determination must be filed in writing on or before 6:00 PM February 16, 1998. Any aggrieved person feeling that the environmental determination of the Environmental Review Committee is based on erroneous procedure,errors of law or fact,error in judgment,or the discovery of new evidence which could not • be reasonably available at the time of the determination may submit written comments.After review of the comments,if Environmental Review Committee finds there is not sufficient evidence to amend its original determination,then there will be no lunher extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed with: Jana Huerter,Land Use Review Supervisor,City of Renton Development Services Division,200 Mill Avenue South,Renton,WA 98055. If an appeal of the environmental determination is also filed with the Hearing Examiner during the same 15-day comment period,then the Environmental Review Committee will first take action on the request for reconsideration and the appellant will be notified that the appeal Is on hold pending the Committee's decision on the reconsideration request. The City will notify the appellant/person requesting reconsideration and parties of record and the Hearing Examiner of the Environmental Review Committee's final determination. The appeal process will then be continued unless the appellant notifies the Hearing Examiner in writing that he wishes to withdraw the appeal.Appeals of the environmental determination must be filed in writing on or before 6:00 PM February 16,1993.Appeals must be filed in writing together with the required 875.00 application fee with:Hearing Examiner,City of Renton,200 Mill Avenue South,Renton,WA 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11B. Additional information regarding the appeal process may be obtained from the Renton City Cleric's Office,(425)-235.2501 .'0`'�l t 32 Vail•.4teF I'I S Svi22- �� ,Je\ II, sr. � Mee ,- 5wila „ 'yl ,f- -I T •i, a.a a...v.rc, tee/ �ti(� R.n SIWy Mes I Sri ss. ire 1 x`xnn Cana\, ?( xi nWe FOR FURTHER INFORMATION,PLEASE CONTACT THE CITY OF RENTON,DEVELOPMENT SERVICES DIVISION AT(425)235-2550. DO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION Please include the project NUMBER when calling for proper file identification. I, SG(,k )v(i) YII i'✓l ii' \ , hereby certify that 3 copies of the above document were posted by me in 3 conspicuous places on or nearby the described property on • Signed: b'Gt� .14,/Lt vy • witi ATTEST: Subcribed and sworn before me, a Nortary Public, in and f6r the State of Washington residing iry pi e-,0 , on the oq OtA day of yy.4(... _ /q e ._.- MARILYN KAMCHEFF COMMISSION EXPIRES 6/29/99 i CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE APPLICA- ION NUMBER: LUA-98-001,ECF,SM APPLICANT: City of Renton/Surface Water Utility PROJECT NAME: SW 23rd Street Drainage Improvement Project DESCRIPTION OF PROPOSAL: The project proposes to replace two existing 18" culverts under the Olympic Pipe Line drainige channel crossing just west of Lind Avenue at SW 23rd Street with a box culvert. The proposal includes installation of a new 24" culvert across a private access road at SW 23rd Street just east of Lind Avenue. The project also propc ses to perform routine maintenance (vegetation and sediment removal) of the channel along SW 23rd Street from Sprirgbrook Creek to East Valley Road. A Shoreline Substantial Development Permit is required for this project. SEPA rev ew for the box culvert and the routine channel maintenance to be completed between Springbrook Creek and Lind Avenue was completed as part of the East Side Green River Watershed Project Plan and EIS under LUA-95-205, ECF (Fina EIS, Sept. 1997). LOCATION OF PROPOSAL: SW 23rd Street from Springbrook Creek to East Valley Road LEAD AGI.ENCY: City of Renton Department of Planning/Building/Public Works Development Planning Section This Determination of Non-Significance is issued under WAC 197-11-340. Because other agencies of jurisdiction may be involved, i he lead agency will not act on this proposal for fifteen (15) days. Comments regarding the environmental determination must be filed in writing on or before 5:00 PM February 16, 1998. Any aggrieved person feeling that the environmental determination of the Environmental Review Committee is based on orroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence which could not be reasonably available at the time of the determination may submit written comments. After review of the comments, if Environmental Review Committee finds there is not sufficient evidence to amend its original determination, then there will be no further extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed with: Jana Huerter, Land Use Review Supervisor, City of Renton Development Services Division, 200 Mill Avenue South, Renton, WA 98055. If an appeal of the environmental determination is also filed with the Hearing Examiner during the same 15-day comment period, then the Environmental Review Committee will first take action on the request for reconsideration and the appellant will be notified th,it the appeal is on hold pending the Committee's decision on the reconsideration request. The City will notify the appell:int/person requesting reconsideration and parties of record and the Hearing Examiner of the Environmental Review Committee's final determination. The appeal process will then be continued unless the appellant notifies the Hearing E,,:aminer in writing that he wishes to withdraw the appeal. Appeals of the environmental determination must be filed in writing on or before 5:00 PM February 16, 1998. Appeals must be filed in writing together with the required $75.00 application fee with: Hearing Examiner, City of Renton, 200 Mill Avenue South, Renton, WA 98055. Appeals to the Exami ner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional information regarding the appeal prc cess may be obtained from the Renton City Clerk's Office, (425)-235-2501 PUBLICA- ION DATE: February 02, 1998 DATE OF DECISION: January 27, 1998 SIGNATURES: Id, r ,,,q/&,,,, —.• iriim%m , Ad��istr DAT/ 2-2/gr Department of anning/Building/Public Works S m Chastain, Administrator DATE CommunityService Dep nt Lee ler, ire Chief DATE Ren on Fire Department CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE ADVISORY NOTES APPLICATION NUMBER: LUA-98-001,ECF,SM AF'PLICANT: City of Renton/Surface Water Utility PF:OJECT NAME: SW 23rd Street Drainage Improvement Project DESCRIPTION OF PROPOSAL: The project proposes to replace two existing 18" culverts under thr� Olympic Pipe Line drainage channel crossing just west of Lind Avenue at SW 23rd Street with a box cu vert. The proposal includes installation of a new 24" culvert across a private access road at SW 23rd Street just east of Lind Avenue. The project also proposes to perform routine maintenance (vegetation and sediment removal) of the channel along SW 23rd Street from Springbrook Creek to East Valley Road. A Shoreline Substantial Development Permit is required for this project. SEPA review for the box culvert and the routine channel maintenance to be completed between Springbrook Creek and Lind Avenue was completed as part of the East Side Green River Watershed Project Plan and EIS under LUA-95-205, ECF (Final EIS, Sept. 1997). LOCATION OF PROPOSAL: SW 23rd Street from Springbrook Creek to East Valley Road Ai visory Notes to Applicant: Th a 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 prr•cess for environmental determinations. 1. Emergency access is to be maintained at all times. AFFIDAVIT OF PUBLICATION Kristina Thompson, being first duly sworn on oath states that he/she is the Legal Clerk of the NOTICE OF ENVIRONMENTAL SOUTH COUNTY JOURNAL ENVIRONMENTENTAALL REVIEW EVIEW COMMITTEE RENTON,WASHINGTON 600 S. Washington Avenue, Kent, Washington 98032 The Environmental Review Committee (ERC)has issued a Determination of Non- Significance for the following project under a daily newspaper published seven (7) times a week. Said newspaper is a legal the authority of the Renton Municipal newspaper ofgeneralpublication and is now and has been for more than six months Code.W SW 23RD DRAINAGE IMPROVEMENT •Oil prior to the date of publication, referred to, printed and published in the English language LUA-98-001,ECF,SM continually as a daily newspaper in Kent, King County, Washington. The South County The City of Renton proposes to replace an existing 18"culvert under the Olympic Journal has been approved as a legal newspaper by order of the Superior Court of the Pipeline crossing of SW 23rd Street chan- State of Washington for King County. nel with a box culvert. Proposal includes The notice in the exact form attached, waspublished in the South Countyinstallation new 24"culvert near SW 23rd and East ofperform of Lind Avenue and perform Journal (and not in supplemental form)which was regularly distributed to the subscribers routine maintenance of the channel. A , during the below stated period. The annexed notice, a Shoreline Substantial Development Permit is required. Location:SW 23rd Street from Springbrook Creek to East Valley Road. . Notice of Env. Determination - SW 23rd Drainage The 15 day comment and appeal period for this project will run concurrently end at 5:00 PM on February 16, 1998. Following It as published on: 2/2/98 this,.the City will finalize its Determination unless comments received require a ree- The full amount of the fee charged for said foregoing publication is the sum of $54.09 valuation. deWrirati comments shallbe and arrededsto 9 9 9 for reconsideration shall be forwarded to Legal Number 4182 the Development Services Division Land Use Review Supervisor.Information on the project file is available at the Development Services Division, Third Floor, Municipal ///, D� Building, Renton, Washington 98055. 1-.e.-.(Ae--- '' Phone: 235-2550. Appeal procedures are 1 Clerk, Sou ounty ournal available in the City Clerk's office, First Floor,Municipal Building. Published in the South County Journal Subscribed and sworn before me on this ' Istay of A February 2,1998.4182, 19 ( , `11tttttt,..i,,fi - '„ - • -• i',/ 'taltfQ ` .- ,.,..•.,. - ' Notary Public of the State of Washington ' • ,''"� '.•1s -. ''�`� ; '�% residing in Renton ma 's \ :s: -3 r t:; :_ King County, Washington "—C--.— C/� p:'`'� nUu^Ltd+ 0,: ? NOTICE OF ENVIRONMENTAL DETERMINATION ENVIRONMENTAL REVIEW COMMITTEE RENTON, WASHINGTON The Environmental Review Committee (ERC) has issued a Determination of Non-Significance for the fo lowing project under the authority of the Renton Municipal Code. SW 23RD DRAINAGE IMPROVEMENT LUA-98-001,ECF,SM The City of Renton proposes to replace an existing 18" culvert under the Olympic Pipeline crossing of SW 23rd Street channel with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. A Shoreline Substantial Development Permit is required. Location: SW 23rd Street from Springbrook Creek to East Valley Road. Tt!e 15 day comment and appeal period for this project will run concurrently end at 5:00 PM on February 1E, 1998. Following this, the City will finalize its Determination unless comments received require a reevaluation. Written comments and requests for reconsideration shall be forwarded to the Development Services Division Land Use Review Supervisor. Information on the project file is available at the Duvelopment Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 2:6-2550. Appeal procedures are available in the City Clerk's office, First Floor, Municipal Building. Pi.iblication Date: February 02, 1998 A( count No. 51067 dnspub STAFF City of Renton Department of Planning/Building/Public Works REPORT ENVIRONMENTAL REVIEW COMMITTEE A. BACKGROUND ERC MEETING DATE January 27, 1998 Project Name SW 23rd Street Drainage Improvement Project Applicant City of Renton, Surface Water Utility File Number LUA-98-001,ECF,SM Project Manager Scott Woodbury Mark Pywell Project Description The project proposes to replace two existing 18" culverts under the Olympic Pipe Line drainage channel crossing just west of Lind Avenue at SW 23rd Street with a box culvert. The proposal includes installation of a new 24" culvert across a private access road at SW 23rd Street just east of Lind Avenue. The project also proposes to perform routine maintenance (vegetation and sediment removal) of the channel along SW 23rd Street from Springbrook Creek to East Valley Road. A Shoreline Substantial Development Permit is required for this project. SEPA review for the box culvert and the routine channel maintenance to be completed between Springbrook Creek and Lind Avenue was completed as part of the East Side Green River Watershed Project Plan and EIS under LUA-95-205, ECF (Final EIS, Sept. 1997). Project Location SW 23rd Street from Springbrook Creek to East Valley Road Exist. Bldg. Area gsf N/A Proposed New Bldg. Area gsf N/A Site Area N/A Total Building Area gsf N/A RECOMMENDATION Staff Recommend that the Environmental Review Committee issue a Determination of Non-Significance (DNS) for the proposed 24" culvert and the routine channel maintenance between Lind Avenue and East Valley Road. SEPA review for the proposed box culvert and routine channel maintenance between Springbrook Creek and Lind Avenue was already completed under the East Side Green River Watershed Project(LUA-95-205,ECF). Project Location Map ERCRPT.DOC • 1 City of Renton PB/PW Department E mental Review Committee Staff Report SW 23RD STREET DRAINAGE IMPROVEMENTS LUA-98-001,ECF,SM REPORT AND DECISION OF JANUARY 27,1998 Page2 of 4 B. RECOMMENDATION B ed on analysis of probable impacts from the proposal, staff recommend that the Responsible Officials make th following Environmental Determination: DETERMINATION OF DETERMINATION OF NON-SIGNIFICANCE NON-SIGNIFICANCE-MITIGATED. Issue DNS with 14 day Appeal Period. Issue DNS-M with 15 day Comment Period with Concurrent 14 da A..eal Period. X Issue DNS with 15 day Comment Period with Issue DNS-M with 15 day Comment Period Concurrent 14 day Appeal Period. followed by a 14 day Appeal Period. C. MITIGATION MEASURES No additional mitigation measures are required beyond those included with the applicant's proposal. Mitigation measures previously required for the proposed box culvert are identified in the East Side Green River Watershed Project's EIS Mitigation Document(Sept. 1997). Advisory{votes 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. Emergency access is to be maintained at all times. D. ENVIRONMENTAL IMPACTS Whether the applicant has adequately identified and addressed environmental impacts anticipated to occur in conjunction with the proposed development? The following discussion of environmental impacts is in regard to the proposed 24" culvert and the routine channel maintenance between Lind Avenue and East Valley Road. SEPA review for the proposed box culvert and routine channel maintenance between Springbrook Creek and Lind Avenue was already completed under the East Side Green River Watershed Project(LUA-95-205,ECF). 1. Earth Impacts: Erosion of soils exposed by construction activity could occur. Best management practices for temporary erosion control will be used during construction to minimize erosion. Mitigatio Measures: No further mitigation is required. Nexus: N/A 2. Water Impacts: Total direct impacts on existing wetlands from the proposed 24" culvert and removal of sediment from the inlet and outlet of the twin 9 by 14-foot culverts under Lind Avenue would be less than 1,950 square feet, the majority of which is Only temporary disturbance. ERCRPT.DIOC City of Renton PB/PWDepartment E, zmental Review Committee Staff Report SW 23RD STREET DRAINAGE IMPROVEMENTS LUA-98-001,ECF,SDI REPORT AND DECISION OFJANUARY 27,1998 Page3 of 4 Vegetative maintenance along the channel south of the private road along SW 23rd Street between Lind Avenue and East Valley Road would remove approximately 8,000 square feet of plants from the channel banks and bottom. The vegetation removal would not affect the topography of the channel and wetland W-8N, of which the channel is a part. The vegetation removal is needed to restore a defined channel and improve fish passage in the channel. There is potential indirect impact to wetland W-7S from placement of the new 24" culvert. The new culvert would restore drainage to an area on the north side of the private access road at SW 23rd Street between Lind Avenue and East Valley Road. This would return the hydrology in the channel on the north side of the access road and Wetland W-7S to conditions that existed before the 30-inch culvert that used to serve the area was plugged. This could result in a potential loss of approximately 0.5 acre of wetland hydrology in the 1.75 acre wetland W-7S (the area of W-7S in the City inventory is listed as 3.3 acres,but the wetland report submitted with the project concluded that original area was in error and that the wetland is actually about 1.75 acres). With the exception of the vegetation removed to restore a defined channel between Lind Avenue and East Valley Road, any wetland area temporarily disturbed will be revegetated using shrubs common to the area. Where possible, vegetation along the banks of the channel above the ordinary high water will be left in place to provide shade for the channel. The shading would be helpful in keeping the vegetation from growing back and filling in the channel again. Best management practices for temporary erosion control will be used during construction to minimize erosion and the discharge of turbid water into the downstream system. Mitigation Measures: No further mitigation is required. Nexus: N/A 3. Plants Impacts: Some vegetation will be temporily removed by the construction activities. With the exception of the vegetation removed to restore a defined channel between Lind Avenue and East Valley Road, any vegetation temporarily disturbed will be revegetated using shrubs and grasses common to the area. Mitigation Measures: No mitigation is required. Nexus: N/A 4. Animals Impacts: The project will improve fish passage in the existing channel on the south side of the private road at SW 23rd Street. Mitigation Measures: None. Nexus: N/A 5. Envirionmental Health Impacts: Fuel and oil spills could occur during construction. There are also high pressure underground petroleum product lines within the project area that will be exposed during construction. The lines are owned by Olympic Pipe Line Company which has a pumping and distribution facility adjacent to the project site. ERCRPT.DOC 4 R. City of Renton PB/PWDepartment Et mental Review Committee Staff Report SW 23RD STREET DRAINAGE IMPROVEMENTS L UA-98-001,ECF,SM REPORT AND DECISION OFJANUARY 27,1998 Page4 of 4 Sediments proposed to be removed from the existing culverts under Lind Avenue and the adjoining channel segments were sampled for contamination. One sample was found to have petroleum contamination levels that would require disposal a`,a municipal landfill. There is potential for these contaminants to be discharged into the downstream system if not handled and disposed of properly. The identi cation, excavation, handling, and disposal of contaminated sediments will need to be conducted in accordance with state d federal requirements. Construction activities will be carefully coordinated with the Olympic Pipe Line Company to ensure that the petroleum product lilies are protected from damage. Olympic Pipe Line Company personnel will be on-site during all construction in the vicinity of their lines. Emergency spill response procedures will be reviewed with the contractor for the project in coordination with the Olympic Pipe Line Company and the City's Fire Department. Mitigation Measures: No further mitigation is required. Nexus: N/A E. COMMENTS OF REVIEWING DEPARTMENTS The proposal has been circulated to City Departmental/Divisional Reviewers for their review. Where applicable,these comments have been incorporated into the text of this report as Mitigation Measures and/or Notes to Applicant Copies of all Review Comments are contained in the Official File. Copies of all Review Comments are attached to this report. ERCRPT.DOC V.1 Washington State Northwest Region Department of Transportation 15700 Dayton Avenue North P.O. Box 330310 Sid Morrison Seattle,WA 98133-9710 Secretary of Transportation (206)440-4000 DEVELOPMENT PLANNING DATE: January 16, 1998 CITY OF RENTON JAN 2 6 1998 TO: City of Renton, Project Manager 200 Mill Avenue South RECEIVED Renton WA 98055 Subject: SR 405 MP 2.06 CS 1743 Notice of Application-SW 23rd Street Drainage Improvement File No.LUA-98-001,SM,ECF FROM: Robert A. Josephson, PE, Manager of Planning & Local Coordination Washington State Department of Transportation Northwest Region 15700 Dayton Avenue North, MS 122 P. O. Box 330310 Seattle, WA 98133-9710 Thank you for giving us the opportunity to review this project, which is located at SW 23rd Street from Springbrook to East Valley Road. Our response is below: We have reviewed this subject document and have no comments. the project will have no significant impact on the state highway system. If you have any questions, please contact Don Hurter at 440-4664 or Vickie Erickson at 440-4915 of my Developer Services section VEE:vee File Name City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: bol'ce., COMMENTS DUE: JANUARY 22, 1998 APPLICATION NO: LUA-98-001,SM,ECF DATE CIRCULATED: JANUARY 8, 1998 APPLICANT: City of Renton/Surface Water Utility PROJECT MANAGER: MARK R. PYWELL PROJECT TITLE: SW 23rd Street Drainage Improvement WORK ORDER NO: 65280 LOCATION: SW 23rd Street from Springbrook Creek to East Valley Road SITE AREA: N/A I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: The applicant requests approval to replace an existing 18" culvert under the Olympic Pipeline crossing at SW 23rd Street with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this project. A. ENVIRONMENTAL IMPACT(e.g. Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation LandYShoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic./Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet / Y/1/?�C/YLG�-�- Z/ C71 07U B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to properly assess this proposal. ( � �aAY,v iv - Signatur of Director or Authorized Representative Date DEVAPP.DOC Rev.10/93 City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL 8 DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: g COMMENTS DUE: JANUARY 22, 1998 APPLICATION NO: LUA-98-001,SM,ECF DATE CIRCULATED: JANUARY 8, 1998 APPLICANT: City of Renton/Surface Water Utility PROJECT MANAGER: MARK R. PYWELL PROJECT TITLE: SW 23rd Street Drainage Improvement WORK ORDER NO: 65280 LOCATION: SW 23rd Street from Springbrook Creek to East Valley Road SITE AREA: N/A I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: The applicant requests approval to replace an existing 18' culvert under the Olympic Pipeline crossing at SW 23rd Street with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this project. A. ENVIRONMENTAL IMPACT(e.g. Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation LandrShoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic./Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS 71 C. CODE-RELATED COMMENTS rip /a)/2,(cd We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additio I information is needed to proper/ ess this proposal. /l`S Si ature of Director or Authorized Repr sen e Date(/ DEVAPP.DOC Rev.10/93 City of Renton Department of Planning/Building/Public Works PPNTON FIRE DEPT ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET ra ® 9 1998 REVIEWING DEPARTMENT: crt Pt t,ev+E'tw? COMMENTS DUE: JANUARY 22, 1998 APPLICATION NO: LUA-98-001,SM,ECF DATE CIRCULATED: JANUARY 8, 1998 APPLICANT: City of Renton/Surface Water Utility PROJECT MANAGER: MARK R. PYWELL PROJECT TITLE: SW 23rd Street Drainage Improvement WORK ORDER NO: 65280 LOCATION: SW 23rd Street from Springbrook Creek to East Valley Road SITE AREA: N/A I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: The applicant requests approval to replace an existing 18" culvert under the Olympic Pipeline crossing at SW 23rd Street with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this project. A. ENVIRONMENTAL IMPACT(e.g. Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable Mom Environment Minor Major Information Environment Minor Major information Impacts Impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet Na 01 I,mr // t C�S 10e / V B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS 41/4ta;n ewe Acce55 to 7 t5 We have re wed this application with part ular attention to those areas in which we have expertise and have identified areas of probable Impact or areas whe additial information is needed top Hy assess this proposal. 77 Sigma r of Director or Authorized Representati Dat e 7 DEVAP . Rev.10/93 City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: PkINN P 4IC W COMMENTS DUE: JANUARY 22, 1998 APPLICATION NO: LUA-98-001,SM,ECF DATE CIRCULATED: JANUARY 8, 1998 et►-44 I UN APPLICANT: City of Renton/Surface Water Utility PROJECT MANAGER: MARK R. PYWELL PROJECT TITLE: SW 23rd Street Drainage Improvement WORK ORDER NO: 65280 2 .;OU8 LOCATION: SW 23rd Street from Springbrook Creek to East Valley Road p� SITE AREA: N/A BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: The applicant requests approval to replace an existing 18" culvert under the Olympic Pipeline crossing at SW 23rd Street with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this project. A. ENVIRONMENTAL IMPACT(e.g. Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS fV GOwl lv(t vtl • We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to properly assess this proposal. L � I 3/ "(b� Signature of Director or Authorized Representative Date DEVAPP.DOC Rev.10/93 City ui Renton Department of Planning/Building/F Works ENVIRONMENTAL 8 DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: 7 Spor-tatlm COMMENTS DUE: JANUARY 22, 1998 APPLICATION NO: LUA-98-001,SM,ECF DATE CIRCULATED: JANUARY 8, 1998 rm,or CirAItrQ" APPLICANT: City of Renton/Surface Water Utility PROJECT MANAGER: MARK R. PYWELL PROJECT TITLE: SW 23rd Street Drainage Improvement WORK ORDER NO: 65280 al u d 1998 LOCATION SW 23rd Street from Springbrook Creek to East Valley Road SITE AREA N/A I BUILDING AREA(gross): N/A rSuiLDINU DIVISION SUMMARY OF PROPOSAL: The applicant requests approval to replace an existing 18" culvert under the Olympic Pipeline crossing at 'SW 23rd Street with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this proji ict. A. ENVIFONMENTAL IMPACT(e.g. Non-Code) COMMENTS Element of e Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation LandUShorelir e Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Reso troes Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS C. ,F-RELATED COMMENTS We have re�iewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additi mat information is needed to property assess this proposal. Signature of Director or Authorized Representative Date DEVAPP.DOC Rev.10/93 City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: Coinslimultm, SQ,wICes COMMENTS DUE: JANUARY 22,ri9 8F RENTON T,cs+clefFQ APPLICATION NO: LUA-98-001,SM,ECF DATE CIRCULATED: JANUARY 8, 1998 APPLICANT: City of Renton/Surface Water Utility PROJECT MANAGER: MARK R. PYWEI=L 1 A MR PROJECT TITLE: SW 23rd Street Drainage Improvement WORK ORDER NO: 65280 LOCATION: SW 23rd Street from Springbrook Creek to East Valley Road SITE AREA: N/A BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: The applicant requests approval to replace an existing 18" culvert under the Olympic Pipeline crossing at SW 23rd Street with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this project. A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation LandrShorellne Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS AleA/c C. CODE-RELATED COMMENTS NGAIC We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where a itional information is needed to properly assess this proposal. i7r/ Author resentatfye Da e i VAPP.D C Dir or A p Rev.10/93 DEVAPP.DOC City of Renton Department of Planning/Building/Public Works ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: Suua«I wastet,01:41,4060MMENTS DUE: JANUARY 22, 1998 OF RENTONrI APPLICATION NO: LUA-98-001,SM,ECF DATE CIRCULATED: JANUARY 8, 19 �...--tco APPLICANT: City of Renton/Surface Water Utility PROJECT MANAGER: MARK R. PYWELL PROJECT TITLE: SW 23rd Street Drainage Improvement _ WORK ORDER NO: 65280 BAN `J 8 1998 LOCATION: SW 23rd Street from Springbrook Creek to East Valley Road ,.��� uiviSION SITE AREA: N/A I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: The applicant requests approval to replace an existing 18" culvert under the Olympic Pipeline crossing at SW 23rd Street with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this project. A. ENVIRONMENTAL IMPACT(e.g. Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS Ni t M giVit' We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable Impact or areas where additional information is needed to properly assess this proposal. "A 7 Signature of Director or Authorized Representative Date DEVAPP.DOC Rev.10193 © CITY OF RENTON .iL Planning/Building/ Public Works ,\O} _ . . a Mill Avenue South - Renton, Washington 98055 a - �,�`i V' W JAM 0 9'S 8 �,1-cam ,2 9 5 �* CL 11 •1 s -t -i - fhErt it! k ,1 8 a, l* \\(\' t CC CC Craig mm ttine Co , /,� Oly is i L P.O. 0 6 `z',E; v Rent n, A 98055 NOT DELI YERABLE ?,667 NOT DELIVERABLE AS ADDRESSED UNABLE TO FORWARD----' ' ADDRESSED NYf VI OSUCH# Ai1EM�1 N —_— u..BLE TO FORWARD a RETURN TO SENDER a Wd �'�" ,,,/ �l L a 1ths lh',I„I„1,11,,,,IM1„lslr„1I,I 1.1,1,.1.1..,1 I 111 1 t I 11,,,11,,,11..,1 er DEVELOPMENTCITY OF RENTON SERVICES CERTIFICATION OF NOTIFICATION OF PROPERTY OWNERS within 300 feet of the subject site ***FOR OFFICIAL USE ONLY*** PROJECT NAME: SW 23RD STREET DRAINAGE IMPROVEMENT PROJECT APPLICANT: CITY OF RENTON SURFACE WATER UTILITY APPLICATION NO(S): l UP1 •`lB•ool, EC.,SW The following is a list of property owners within 300 feet of the subject site. The Development Services Division will notify these individuals of the proposed development. NAME ADDRESS ASSESSOR'S PARCEL NUMBER PLEASE SEE THE ATTACHED LIST. vev op,etdr o a jot4 NAME ADDRESS ASSESSOR'S PARCEL NUMBER Certification I, Scott Woodbury, hereby certify that the above list(s) of adjacent property owners and their addresses were taken from City records, obtained quarterly from the King County Assessor. ATTEST: Subscribed and sworn to before me, a Notary Public, in and for the State of Washington, residing at 5 A-fry on the day of ,YMCA-R(-11 tgct t • Signed: co (/jut)-416tc? 1. rnl�l4C F -R %.l STMJ ►'n y Comm 'SS r P -c79/02cco **"""*For Office Use Only****** CERTIFICATION FOR MAILING I, V.rq . ' rlr.),1Rr"" , hereby certify that notice of the pending aforementioned project was mailed on I. 9 46 , to each listed adjacent property owner as prescribed by law. ATTEST: Subscribed and sworn to before me a Notary Public, in and for the State of Washington iesi(ling at LC) if 3 S 5 /45' r'- ontle _I "'1- day of ( �ti . _ Signed: S U:SW23RD.Mg7 R ■� COMMISSION EXPIRES 6/29/99 Mr.Martin Seelig Puget Western,Inc Craig Hammett PO Box 1925 19515 North Creek Parkway#310 Olympic Pipe Line Co Bellevue,WA 98019 Bothell,WA 98011 P.O.Box 236 Renton,WA 98055 Vickie Erickson Shirely Lukhang Strada Da Valle Partnership WA State Departme t of Transportation Seattle Public Utilities 9125 10th Ave S 15700 Dayton Aven e N,MS 122 Dexter Horton Building- 10th Floor Seattle, WA 98108 P.O.Box 330310 710 Second Avenue Seattle,WA 98133-9710 Seattle, WA 98104 Allen Tosch Morris Piha Management Group 302305910002 Hunter Douglas Springbrook Industrial Site,Renton TOSCO CORP 7015 S 212th Street do Vickie Piha PO BOX 52085 Kent,WA 98032 3650 131st Ave SE,Ste 204 ATTN:R.S.DUTTON-DC-48 Bellevue,WA 98006-1334 PHOENIX AZ 85072 252304906404 192305909504 192305907607 FOUSHEE&ASS'CIATES STONEHENGE III LIMITED BENTALL INVESTMENTS L L C 3260 118TH AVE .E STE 1000 PARTNERSHIP 4 BENTALL CENTRE STE 1800 BELLEVUE WA 98009 3605 132ND AVE SE SUITE 300 VANCOUVERBC CAN V7X 1B 0 BELLEVUE WA 98006 Jack Nelson 334040000609 Drainage District e. 1 SHURGARD INCORPORATED 601 W.Gowe OPERATIONS ACCOUNTING Kent WA 98032-'745 1201 THIRD AVE#2200 SEATTLE WA 98101 Vr�Y O� • A • NOTICE OF APPLICATION PLANNING/BUILDING/PUBLIC WORKS DATE: JANUARY 08,1998 A Master Application has been bled and accepted with the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. PROJECT NUMBER/NAME: LUA-98-001,SM,ECF I SW 23RD STREET DRAINAGE IMPROVEMENT DESCRIPTION: The applicant,City of Renton/Surface Water Utility,requests approval to replace an existing 18•culvert under the Olympic Pipeline crossing of SW 23rd Street channel with a box culvert. Proposal Includes installation of a new 24'culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. The applicant must obtain a Shoreline Substantial Development Permit for this project. GENERAL LOCATION: SW 23rd Street from Springbrook Creek to East Valley Road STUDIES REQUIRED/OR AVAILABLE: N/A PUBLIC APPROVALS: Environmental Review(ECF) Shoreline Substantial Development Permit(SM) Comments on the Environmental Review for the above application must be submitted in writing to Mark R.Pywell, Project Manager,Development Services Division,200 Mill Avenue South,Renton,WA 98055,by 5:00 PM on February 16,1998. Comments on the Shoreline Substantial Development Permit may be submitted by 5:00 PM February 10, 1998. It you have questions about This proposal,or wish to be made a party of record and receive additional notification by mail,contact Mr.Pywell al(425)277-5586. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. • PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION DATE OF APPLICATION: JANUARY 05,1998 NOTICE OF COMPLETE APPLICATION: JANUARY 08,1998 • DATE OF NOTICE OF APPLICATION: JANUARY 08,1998 e cI tv( t ICSIIMI Vetl°nds t s Panther Creek Protect II' - sV123rd Area c-` • -wila ( ' ti sl 1 ���1 Black River Voter Quality Management , J�6 ` Plan Study Area 9 S 43rd St.' - ' Panther Creek J t. I Renton_ ESGR �elno Caunlv\' (v°terehed CERTIFICATION • 1, SaV .tAMinni{i , hereby certify that 3 copies of the above document were poste' by me in _conspicuous places on or nearby the described property on • • Signed: giltriA40e PVi4,Wvv. STATE OF WASHINGTON • ) SS COUtiTY OF KING ) • I certify that 1 know or have satisfactory evidence that .9y► .+.rt�u�y signed this instrument and acknowledged it to be his/her/their frey e d voluntary act for the uses • and purposes mentioned in the instrument. • Dated: (73,0, f 942 avin Notary Pub in and for the Stale o ashinglon Notary (Print) MARILYN KAMCHEFF My appointment expRIAMISS1ON EXPIRES .11(111 AFFIDAVIT OF PUBLICATION Kristina Thompson, being first duly sworn on oath states that he/she is the Legal Clerk of SHORELINE APPLICATION the NOTICE OF APPLICATION FOR SHORELINE MANAGEMENT SOUTH COUNTY JOURNAL SUBSTANTIAL DEVELOPMENT PERMIT 600 S. Washington Avenue, Kent, Washington 98032 Notice is hereby given that City of Renton has filed an application for a sub- stantial development permit for the: a daily newspaper published seven (7)times a week. Said newspaper is a legal SW 23RD STREET DRAINAGE IM- newspaper of general publication and is now and has been for more than six months PROVEMENT prior to the date ofpublication, referred to, printed andpublished in the English language The po1,sM,ECF 9The applicant, City of Renton/Surface continually as a daily newspaper in Kent, King County, Washington. The South County Water Utility, requests approval to replace Journal has been approved as a legal newspaper by order of the Superior Court of the an existing 18"culvert under the Olympic Pipeline crossing of SW 23rd Street chan- State of Washington for King County. nel with a box culvert. Proposal includes The notice in the exact form attached, was published in the South County installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform Journal (and not in supplemental form)which was regularly distributed to the subscribers routine maintenance of the channel. during the below stated period. The annexed notice, a Any person desiring to express his views or to be notified of the action taken on this action should notify the City of Renton, S.W. 23rd Street Drainage Improvements Development Services Division, Municipal Building, 200 Mill Avenue South, Renton, Washinonas published on: 1/12/98 0, 1998,5:00 98PM 055 in writing by February Published in the South County Journal The full amount of the fee charged for said foregoing publication is the sum of$36.06 January 12, 1998 4083 Legal Number 4083 L> Clerk, Sou County Journal Subscribed and sworn before me on this ,)J day of R�cL, 19 cre 01I11101,, i• /J h.1,• `��,,,, i ! ' Notary Public of the State of Washington residing in Renton • - King County, Washington PUaL‘G ©:` 11111 SHORELINE APPLICATION NOTICE OF APPLICATION FOR SHORELINE MANAGEMENT SUBSTANTIAL DEVELOPMENT PERMIT Notice is hereby given that City of Renton has filed an application for a substantial development permit for the: SW 23RD STREET DRAINAGE IMPROVEMENT LUA-98-001,SM,ECF The applicant, City of Renton/Surface Water Utility, requests approval to replace an existing 18" culvert under the Olympic Pipeline crossing of SW 23rd Street channel with a box culvert. Proposal includes installation of a new 24" culvert near SW 23rd and East of Lind Avenue and perform routine maintenance of the channel. Ally person desiring to express his views or to be notified of the action taken on this action should notify the City of Renton, Development Services Division, Municipal Building, 200 Mill Avenue South, Renton, Washington, 98055, in writing by February 10, 1998, 5:00 PM. Publication Date: January 12, 1998 A;count No.: 51067 S-iPLPUB.DOC CITY OF RENTON MEMORANDUM Date: January 08, 1998 To: Scott Woodbury/Surface Water Utility From: R. Pywell, AICP/Development Planning Subject: SW 23rd Street Drainage Improvement Project No. LUA-98-001,SM,ECF The Development Planning Section of the City of Renton has received the above-referenced application for environmental review. A presentation of the proposed amendment to the Environmental Review Committee (ERC) is scheduled for January 27, 1998. At that meeting, you will present staff recommendations for the Committee's review and environmental determination. The ERC staff report is due to Karen Codiga one week prior to the scheduled ERC date. There is a template for the ERC staff report available on the "h" drive. Please contact me with any questions you may have regarding the staff report. Following the ERC meeting, I will send you copies of the ERC determination along with the timeframes for the public comment and appeal periods for your files. Please provide a charge number for the publication of the Shoreline Substantial Development Permit (SM) and the Environmental determination. ACCPTMM.DOC CITY OF RENTON,:::.: MASTER APPLICATION OWNER(S) PROJECT INFORMATION (cont.) Note: If there is more than one legal owner, please attach an additional notarized Master Application for each owner. EXISTING LAND USE(S): NAME: The project will take place primarily in existing drainage channel along CITY OF RENTON SW 23rd Street near Lind Avenue. Industrial/office developments occupy adjacent parcels as well as undeveloped fill pads and wetland areas. Municipal Building ADDRESS: 200 Mill Avenue South EXISTING ZONING: CITY: ZIP: Industrial Renton, WA 98055 PROPOSED LAND USE(S): TELEPHONE NUMBER: (206) 277-5547 No change proposed. CONTACT PERSON/APPLICANT PROPOSED ZONING: NAME: Scott Woodbury No change proposed. Surface Water Utility ADDRESS: SITE AREA (SQ. FT. OR ACREAGE): 200 Mill Avenue South Less than 1 acre CITY: ZIP: Renton, WA 98055 PROJECT VALUE: TELEPHONE NUMBER: Approximately $150,000- $250,000 construction cost (425) 277-5547 PROJECT INFORMATION IS THE SITE LOCATED IN THE AQUIFER PROTECTION AREA? PROJECT OR DEVELOPMENT NAME: No SW 23rd Street Drainge Improvement Project PROPERTY/PROJECT ADDRESS(S)/LOCATION: IS THE SITE LOCATED IN ANY OTHER TYPE OF ENVIRONMENTALLY Existing drainage channels along SW 23rd Street from Springbrook SENSITIVE AREA? Creek to East Valley Road Several wetlands are in the project vicinity. The project is within a KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): shoreline area of conservancy designation. 3023059083, 3023059084, 3023059066, 3023059007, 2193100010 RECEIvFn JAN 5 1998 DEVELOPfvitN1 PLANNING CITY OF RENTON LEGAL DESCRIP1 ....J OF PROPERTY (Attach separat., .heet if necessary) The project will take place primarily in existing drainage channels along SW 23rd Street between Springbrook Creek and East Valley Road. TYPE OF APPLICATION & FEES Check all application types that apply--City staff will determine fees. ANNEXATION $ SUBDIVISION: REZONE $ _ SPECIAL PERMIT $ _ LOT LINE ADJUSTMENT $ TEMPORARY PERMIT $ _ SHORT PLAT $ _ CONDITIONAL USE PERMIT $ TENTATIVE PLAT $ SITE PLAN APPROVAL $ _ PRELIMINARY PLAT $ _ GRADE & FILL PERMIT $ _ FINAL PLAT $ (NO. CU. YDS: VARIANCE $ PLANNED UNIT DEVELOPMENT: $ (FROM SECTION: WAIVER $ _ PRELIMINARY _ WETLAND PERMIT S FINAL _ ROUTINE VEGETATION MANAGEMENT PERMIT $ MOBILE HOME PARKS: -SHORELINE BINDING SITE PLAN $ SHORELINE REVIEWS: _ TENTATIVE _ PRELIMINARY x SUBSTANTIAL DEVELOPMENT $ FINAL CONDITIONAL USE $ — _VARIANCE $ _ EXEMPTION SNo Charge _x_ ENVIRONMENTAL REVIEW $ _ REVISION S AFFIDAVIT OF OWNERSHIP I, Scott Woodbury, declare that I am the authorized representative to act for the property owner(please attach proof of authorization), and that the foregoing statements and answers herein contained and the information herewith submitted are in all respects true and correct to the best of my knowledge and belief.h- cAktii (Name of Representative) ATTEST: Subscribed and sworn to before me, a Notary Public, in and for the State of (,Va,$hf. residing at S EA-rrt— .T1t l,-l. 9g.8_ , on the day of 1 (Signature Represent ive) C (Signature of Notary Publi q / Vv1 �C Gj hi YYl I�S i L 4, 51"/ 000 (This sec , o be completed by City Staff.) : City File Number: tot.,149-all CF' SA R SHPL CU LLA PP FP TP SP RVMP V AAD W FPUD SME PMHP FMHP BSP A TOTAL FEES: $ N/A- TOTAL POSTAGE PROVIDED: $ U:SW23RD.ST:97-015:SW DEVELOPMENT SERVICES DIVISIC WAIVER OF SUBMITTAL REQUIREMENTS FOR LAND USE APPLICATIONS LAND USE PERMIT.SUBMITTAL` WAIVED MODIFIED COMMENTS: REQUIREMENTS: BY: BY Calculations, Survey, Drainage Control Planz lv Drainage Report 2 GJy" • Elevations Architectural3AND4 (x l Elevations, Grading 2 . Existing Covenants (Recorded Cooy)4 Existing Easements (Recorded Copy) 4 Flood Plain Map, If applicable 4 • Floor Plans 3 AND 4 L' Geotechnical Reporti.AND3 E Grading Plan, Conceptual 2 1iryy�v Grading Plan Detailed z King County Assessor's Map Indicating Site 4 Landscaping Plan, Conceptual4 . Legal Description 4 List of Surrounding Property Owners 4 Mailing Labels for Property Owners 4 Map of Existing Site Conditions Master Application Form 4 Monument Cards(one per monument) , Parking, Lot Coverage & Landscaping Analysis 4 Plan Reductions (PM.Ts) Postage 4 Public Works Approval Letter 2 • Title Report or Plat Certificate 4 Topography Map (5' contours)3 Traffic Study 2 Tree CuttingNegetation Clearing Plan 4 /JJ Utilities Plan, Generalized 2 Wetlands Delineation Map4 Wetlands Planting Plan 4 Wetlands Study 4 This requirement may be waived by: 1. Property Services Section PROJECT NAME: a3t.4—reC)l- PYA-1311484, 2. Public Works Plan Review Section Ple-rijst€* 3. Building Section DATE: 1/1;/9$ 4. Development Planning Section h:Ndivision.sldevelop.ser\dev.plan.ing\waiver.xls PROJECT NARRATIVE Project Name: SW 23rd Street Drainage Improvement Project Current Use of the Site and Any Existing Improvements: See Section A7 of the attached JARPA application. Name of Adjacent Water Area or Wetlands: The project affects drainage channels along SW 23rd Street near Lind Avenue SW which are tributary to Springbrook Creek Several wetlands are in the project vicinity as shown on Figure 2 and 3 of the attached JARPA application. A wetland delineation report specifically prepared for the project is also attached. All of the work area is below the level of the 100-year FEMA floodplain of Springbrook Creek. Nature of Existing Shoreline: The channels, wetlands, and land use within and adjacent to the affected shoreline area are described in detail on pages 5 to 9 of the attached wetland delineation report(Jones& Stokes, 1997). Number and Location of Structures and/or Residential Units Which Might Have Views Obstructed as a Result of the Proposed Project: None. Proposed Use of the Property and the Scope of the Proposed Improvements: The purpose of the project is to reduce flooding and culvert maintenance problems, improve the potential for fish passage, and add habitat and a high flow refuge for fish that is currently not accessible. The proposed project consists of the following 5 elements: 1. Replace existing 18" culverts under the Olympic Pipe Line Crossing of the SW 23rd Street Channel with a new, large pre-cast concrete box culvert. 2. Remove an abandoned beaver dam at the mouth of the SW 23rd Street channel as it enters Springbrook Creek west of Lind Avenue and south of the SW 23rd Street access road and selectively remove debris and vegetation between Springbrook Creek and Lind Avenue. 3. Remove accumulated herbaceous and shrub vegetation along 1,180 linear feet of the SW 23rd Street channel from East Valley Road to Lind Avenue. 4. Install a new 24-inch culvert parallel to and east of Lind Avenue to connect a small channel north of the SW 23rd Street access road to the SW 23rd Street channel, south of the access road to restore drainage system function. 5. Remove sediment from the twin 9-foot by 14-foot culverts under Lind Aue at SW 23rd Street and immediately upstream and downstream of the culvert openings. 1 998 UtvECITY OF L0viviorRE I PtJTl v(ONv tmc. Project Narrative SW 23rd Street Drainage Improvement Project Page 2 5. Remove sediment from the twin 9-foot by 14-foot culverts under Lind Avenue at SW 23rd Street and immediately upstream and downstream of the culvert openings. SEPA review for elements 1 and 2 was completed as part of the East Side Green River Watershed Project Plan(ESGRWP)and EIS under LUA-95-205, ECF(Final EIS, Sept. 1997). Elements 1 and 2 are included in this project application for the purpose of obtaining a shoreline substantial development permit. Total Construction Cost and Fair Market Value of the Proposed Project: The total project cost/value is estimated to be between approximately$150,000 to $250,000. Proposed Construction Dates: June- September 1998 U:S W 23 RD.S T:97-015 B:S W CITY OF RENTON DEVELOPMENT SERVICES DIVISION ENVIRONMENTAL CHECKLIST PURPOSE OF CHECKLIST: The State Environmental Policy Act(SEPA),Chapter 43.21C RCW,requires all governmental agencies to consider the environmental impacts of a proposal before making decisions. An Environmental Impact Statement(EIS)must be prepared for all proposals with probable significant adverse impacts on the quality of the environment. The purpose of this checklist is to provide information to help you and the agency identify impacts from your proposal(and to reduce or avoid impacts from the proposal,if it can be done)and to help the agency decide whether an EIS is required. INSTRUCTIONS FOR APPLICANTS: This environmental checklist asks you to describe some basic information about your proposal. Governmental agencies use this checklist to determine whether the environmental impacts of your proposal are significant,requiring preparation of an EIS. Answer the questions briefly,with the most precise information known,or give the best description you can. You must answer each question accurately and carefully,to the best of your knowledge. In most cases,you should be able to answer the questions from your own observations or project plans without the need to hire experts. If you really do not know the answer,or if a question does not apply to your proposal,write "do not know"or"does not apply". Complete answers to the questions now may avoid unnecessary delays later. Some questions ask about governmental regulations,such as zoning,shoreline,and landmark designations. Answer these questions if you can. If you have problems,the governmental agencies can assist you. The checklist questions apply to all parts of your proposal,even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. USE OF CHECKLIST FOR NONPROJECT PROPOSALS: Complete this checklist for nonproject proposals,even though questions may be answered"does not apply." IN ADDITION,complete the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS(part D). For nonproject actions(actions involving decisions on policies,plans and programs),the references in the checklist to the words"project,""applicant,"and"property or site"should be read as"proposal," "proposer,"and"affected geographic area,"respectively. A. BACKGROUND 1. Name of proposed project, if applicable: SW 23rd Street Drainage Improvement Project 2. Name of Applicant: City of Renton Surface Water Utility 3. Address and phone number of applicant and contact person: 200 Mill Avenue S,4th Floor Renton,WA 98055 Contact: Scott Woodbury Phone: 425-277-5547 4. Date checklist prepared: January 1998 5. Agency requesting checklist: City of Renton RECFJVFf 6. Proposed timing or schedule(including phasing, if applicable): JAN - 6 1998 Begin Construction June 1998 End Construction Sept. 1998 DEVELOr r i t ✓+tv�Vliv� CITY OF RENTON 7. Do you have any plans for future additions, expansion, or further activity related to or connected to this project? ® Yes n No. If yes, explain. The drainage channel along the south side of the SW 23rd Street between Springbrook Creek and East Valley Road may be deepened as part of a separate,future project. SEPA review for a project proposal to deepen the channel was completed as part of the East Side Green River Watershed Project(ESGRWP)Plan and EIS. Copies of the ESGRWP EIS documents (Draft EIS,Dec. 1996; Final EIS and EIS Mitigation Document, Sept. 1997) are located in City File LUA-95-205,ECF. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. A portion of the SW 23rd Street Drainage Improvement Project described in this SEPA checklist was already reviewed under SEPA as part of the ESGRWP Plan and EIS as discussed in Section All below. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? ® Yes Ill No. If yes, explain. A JARPA application has been submitted to the Corps of Engineers and Washington State Department of Fish and Wildlife for proposed culvert modifications within the SR-167 right-of-way in the City of Renton,including a new culvert across SR-167 at SW 23rd Street. The new culvert will outlet flows into the channel where work is proposed under the SW 23rd Street Drainage Improvement Project. SEPA review for the proposed SR- 167 culvert modifications was completed as part of the ESGRWP EIS under Alternative 23ST3,Element 1 and Alternative PC2,Element 1. 10. List any governmental approvals or permits that will be needed for your proposal, if known. City of Renton - Shoreline Permit Washington State Department of Fish and Wildlife-Hydraulic Project Approval Washington State Department of Ecology- Section 401 Permit,Temp. Water Qual. Mod. Corps of Engineers- Section 404 Permit 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. The proposed project consists of the following 5 elements: 1. Replace the existing 18"culverts under the Olympic Pipe Line Crossing of the SW 23rd Street Channel with a new, large pre-cast concrete box culvert. 2. Remove an abandoned beaver dam at the mouth of the SW 23rd Street channel as it enters Springbrook Creek west of Lind Avenue and south of the SW 23rd Street access road and selectively remove debris and vegetation between Springbrook Creek and Lind Avenue. 3. Remove accumulated herbaceous and shrub vegetation along 1,180 linear feet of the SW 23rd Street channel from East Valley Road to Lind Avenue. 4. Install a new 24-inch culvert parallel to and east of Lind Avenue to connect a small channel north of the SW 23rd Street access road to the SW 23rd Street channel,south of the access road to restore drainage system function. 5. Remove sediment from the twin 9-foot by 14-foot culverts under Lind Avenue at SW 23rd Street and immediately upstream and downstream of the culvert openings. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 2 • • These activities are described in Section A8 of the attached JARPA application. SEPA review for elements 1 and 2 was completed as part of the ESGRWP Plan and EIS. Please refer to the ESGRWP Plan and EIS documents for detailed environmental review of proposed elements 1 and 2. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section,township, and range if know. If a proposal would occur over a range of area,provide the range or boundaries of the site(s). Provide a legal description, site plan,vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency,you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. See Section A6 of the attached JARPA application. B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site: ® flat rolling El hilly steep slopes mountainous other b. What is the steepest slope on the site(approximate percent slope?) Portions of the side slopes of the channels affected by the project are estimated to slope at 1.5H:1 V. c. What general types of soils are found on the site(for example,clay,sand,gravel,peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. See Section Al2d of the attached JARPA application. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. Soils in the area are susceptible to liquefaction during an earthquake and to compression when place under load. The project area does not contain erosion or landslide hazard areas as defined by the City of Renton sensitive areas maps. e. Describe the purpose,type, and approximate quantities of any filling or grading proposed. Indicate source of fill. Rock riprap and other granular material will be used to backfill excavations and to protect some slope areas from erosion. An estimated 400 cubic yards of rock and granular material will be used from local suppliers. f. Could erosion occur as a result of clearing,construction,or use? If so,generally describe. Yes. Erosion of soils exposed by construction could occur. g. About what percent of the site will be covered with impervious surfaces after project construction(for example, asphalt or buildings)? No change from pre-project conditions. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 3 h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Best management practices will be used during construction to minimize erosion. See also the mitigation measures identified in the ESGRWP EIS Mitigation Document in Table 1 under Alternative 23ST3,Element 2. 2. AIR a. What types of emissions to the air would result from the proposal(i.e.,dust,automobile, odors, industrial wood smoke)during construction and when the project is completed? If any,generally describe and give approximate quantities if known. There will be exhaust emissions from construction equipment. b. Are there any off-site sources of emission or odor that may affect your proposal? Yes No. If so,generally describe. c. Proposed measures to reduce or control emissions or other impacts to air, if any: Construction equipment must have mufflers and exhaust systems in good operating condition. 3. WATER a. Surface Water: 1) Is there any surface water body on or in the immediate vicinity of the site(including year- round and seasonal streams, saltwater, lakes,ponds,wetlands)? ® Yes Z No. If yes,describe type and provide names. If appropriate, state what stream or river it flows into. The project affects drainage channels along SW 23rd Street near Lind Avenue SW which are tributary to Springbrook Creek Several wetlands are in the project vicinity as shown on Figure 2 and 3 of the attached JARPA application. A wetland delineation report specifically prepared for the project is also attached. 2) Will the project require any work over, in,or adjacent to(within 200 feet)the described waters?® Yes z No. If yes,please describe and attach available plans. Refer to Section A8 and Figures 3 to 7 of the attached JARPA application for plans and a detailed description of the work. 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. Refer to Sections A10,All,Al2,and A14 of the attached JARPA application. 4) Will the proposal require surface water withdrawals or diversions? Give general description,purpose,and approximate quantities if known. Surface water will need to be bypassed around the construction site for installation of the proposed culverts. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHICLIST.DOC Page 4 5) Does the proposal lie within a 100-year flood plain?® Yes Ei No. If so, note location on the site plan. All of the work area is below the level of the 100-year FEMA floodplain of Springbrook Creek. 6) Does the proposal involve any discharges of waste materials to surface waters? El Yes No. If so,describe the type of waste and anticipated volume of discharge. b. Ground Water: 1) Will ground water be withdrawn,or will water be discharged to ground water? Give general description,purpose, and approximate quantities if known. Well points and/or sumps may be needed to temporarily lower groundwater levels to allow installation of the culverts under sufficiently dry conditions. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any(for example: Domestic sewage; industrial,containing the following chemicals...;agricultural; etc.). Describe the general size of the system,the number of such systems,the number of houses to be served(if applicable),or the number of animals or humans the system(s)are expected to serve. Not applicable. c. Water Runoff(including storm water): 1) Describe the source of runoff(including storm water)and method of collection and disposal, if any(include quantities, if known). Where will this water flow? Will this water flow into other waters,If so, describe. The SW 23rd Street Drainage Improvement Project proposes to modify existing drainage features as described in Section All above. 2) Could waste material enter ground or surface waters? If so, generally describe. The proposed project will not produce any waste material,except possibly some discharges of turbid water as a result of construction activities. d. Proposed measures to reduce or control surface, ground,and runoff water impacts, if any: Best management practices will be used during construction to minimize erosion and the discharge of turbid water into the downstream system. See also the mitigation measures identified in the ESGRWP EIS Mitigation Document in Table 3 under Alternative 23ST3,Element 2. 4. PLANTS a. Check types of vegetation found on the site: deciduous tree: alder,maple,aspen,other O evergreen tree:fir,cedar,pine,other ® shrubs ®grass ❑pasture crop or grain ®wet soil plants:cattail,buttercup,bullrush,skunk cabbage,other U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 5 water plants:water lily,eel grass,milfoil,other other types of vegetation b. What kind and amount of vegetation will be removed or altered? See Section A8 of the attached JARPA application. c. List threatened or endangered species known to be on or near the site. None known. See Section 7.2 of the ESGRWP EIS. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Areas disturbed by construction activities will be revegetated with grasses and native shrubs,except those portions of the channels where vegetation is proposed to be removed. 5. ANIMALS a. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site: Bird'4 ero eagle, ,on.bird-,other Mamma s: deer,bear elk ' 4 ' • eofc Fish: bass, almo trou herring, shellfish,kp -Al rce-shined Sfic klebac.(c b. List any threatened or endangered species known to be on or near the site. None known. See Section 7.2 of the ESGRWP EIS. c. Is the site part of a migration route? If so, explain The work area is tributary to the nearby Springbrook Creek which is a salmon bearing stream. d. Proposed measures to preserve or enhance wildlife, if any: The proposed project replaces culverts that are a barrier to fish with a fish passable culvert,opening approximately 1300 feet of existing channel for fish use. 6. ENERGY AND NATURAL RESOURCES a. What kinds of energy(electric,natural gas,oil,wood stove, solar)will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing,etc. Not applicable. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. Not applicable. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: Not applicable. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 6 7. ENVIRONMENTAL HEALTH a. Are there any environmental health hazards, including exposure to toxic chemicals,risk of fire and explosion, spill,or hazardous waste,that could occur as a result of this proposal? If so,describe. Fuel and oil spills could occur during construction. There are also three high pressure underground petroleum product lines within the project area that will be exposed during construction. The lines are owned by Olympic Pipe Line Company which has a pumping and distribution facility adjacent to the project site. Sediments proposed to be removed from the existing culverts under Lind Avenue and the adjoining channel segments were sampled for contamination(see the attached report). One sample was found to have petroleum contamination levels that would require disposal at a municipal landfill. There is potential for these contaminants to be discharged into the downstream system if not handled and disposed of properly. 1) Describe special emergency services that might be required. A large scale emergency spill response may be necessary if a petroleum pipeline is accidentally damaged by construction activities. 2) Proposed measures to reduce or control environmental health hazards, if any: The identification,excavation,handling,and disposal of contaminated sediments will need to be conducted in accordance with state and federal requirements. Construction activities will be carefully coordinated with the Olympic Pipe Line Company to ensure that the petroleum product lines are protected from damage. Olympic Pipe Line Company personnel will be on-site during all construction in the vicinity of their lines. Emergency spill response procedures will be reviewed with the contractor for the project in coordination with the Olympic Pipe Line Company and the City's Fire Department. b. Noise 1) What types of noise exist in the area which may affect your project(for example: traffic, equipment,operation,other)? None. 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis(for example: traffic, construction,operation, other)? Indicate what hours noise would come from the site. Increased noise levels from the operation of construction equipment is expected from the hours of 7 AM to 6 PM. There are no residences in the vicinity of the proposed project. 3) Proposed measures to reduce or control noise impacts, if any: Construction equipment must have mufflers and exhaust systems in good operating condition. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 7 8. LAND AND SHORELINE USE a. What is the current use of the site and adjacent properties? See Section A7 of the attached JARPA. b. Has the site been used for agriculture? Yes ® No. If yes,describe. c. Describe any structures on the site. None. d. Will any structures be demolished? ❑ Yes ® No. If so,what? e. What is the current zoning classification of the site? Industrial. f. What is the current comprehensive plan designation of the site? Employment Area-Valley g. If applicable,what is the current shoreline master program designation of the site? Conservancy h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. Several wetlands are in the project vicinity as shown on Figure 2 and 3 of the attached JARPA application. A wetland delineation report specifically prepared for the project is also attached. i. Approximately how many people would reside or work in the completed project? Not applicable. j. Approximately how many people would the completed project displace? Not applicable. k. Proposed measures to avoid or reduce displacement impacts, if any: Not applicable. I. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: The project reduces flooding and culvert maintenance problems,improves the potential for fish passage,and adds habitat and a high flow refuge for fish that is currently not accessible. 9. HOUSING a. Approximately how many units would be provided, if any? Indicate whether high,middle, or low-income housing. Not applicable. b. Approximately how many units,if any,would be eliminated? Indicate whether high, middle,or low-income housing. Not applicable. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 8 c. Proposed measures to reduce or control housing impacts, if any: Not applicable. 10. AESTHETICS a. What is the tallest height of any proposed structure(s), not including antennas;what is the principal exterior building material(s)proposed. Not applicable. b. What views in the immediate vicinity would be altered or obstructed? Not applicable. c. Proposed measures to reduce or control aesthetic impacts, if any: Not applicable. 11. LIGHT AND GLARE a. What type of light or glare will the proposal produce? What time of day would it mainly occur? Not applicable. b. Could light or glare from the finished project be a safety hazard or interfere with views? Not applicable. c. What existing off-site sources of light or glare may affect your proposal? Not applicable. d. Proposed measures to reduce or control light and glare impacts, if any: Not applicable. 12. RECREATION a. What designated and informal recreational opportunities are in the immediate vicinity? Not applicable. b. Would the proposed project displace any existing recreational uses?D Yes ® No. If so, describe. Not applicable. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: Not applicable. 13. HISTORIC AND CULTURAL PRESERVATION a. Are there any places or objects listed on,or proposed for,national state,or local preservation registers known to be on or next to the site? If so,generally describe. None known. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 9 b. Generally describe any landmarks or evidence of historic, archaeological, scientific,or cultural importance known to be on or next to the site. None known to be on or next to the site. See Chapter 10 of the ESGRWP EIS for a detailed review of existing cultural resources in the area. c. Proposed measures to reduce or control impacts, if any: The contract specifications will inform the contractor of the potential to encounter cultural resources and establish procedures for determining the significance of the find. 14. Transportation a. Identify public streets and highways serving the site,and describe proposed access to the existing street system. Show on site plans, if any. Access to the project area will be from Lind Avenue SW. No impacts to traffic are anticipated except as may result from the occasion ingress and egress of construction vehicles. b. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Not applicable. c. How many parking spaces would the completed project have? How many would the project eliminate? Not applicable. d. Will the proposal require any new roads or streets,or improvements to existing roads or streets,not including driveways? If so,generally describe(indicate whether public or private? Not applicable. e. Will the project use(or occur in the immediate vicinity of)water, rail, or air transportation? If so,generally describe. Not applicable. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. Not applicable. g. Proposed measures to reduce or control transportation impacts, if any: The contractor will be required to post signs on Lind Avenue to warn traffic of construction vehicles entering and leaving the site. 15. Public Services a. Would the project result in an increased need for public services(for example: fire protection,police protection,health care, schools,other)? If so, generally describe. Not applicable. U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 10 b. Proposed measures to reduce or control direct impacts on public services, if any. Not applicable. 16. Utilities a. Circle utilitie . - •tl available at the site. - ectrici ,natural gal i efuse service elepho , sanitary sewer eptic syste other- b. Describe the utilities that are proposed for the project,the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Not applicable. C. SIGNATURE I,the undersigned,state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw any declaration of non-significance that it might issue in reliance upon this checklist should there be any willful misrepresentation or willful lack of full disclosure on my part.r_f Proponent: e_Jar `, Name Printed: SI°'r (4,001.47 Date: V G/98 U:\SWOODBUR\1997-98\65230\SW23RD.ST\ECHKLIST.DOC Page 11 • SEDIMENT AND SOIL CHARACTERIZATION REPORT Olympic Pipeline Culvert Replacement Project Prepared for R.W. Beck, Inc. 1001 Fourth Avenue, Suite 2500 Seattle, WA 98154 and City of Renton Department of Public Works 200 Mill Avenue South Renton, WA 98055 Prepared by Herrera Environmental Consultants, Inc. 2200 Sixth Avenue, Suite 601 Seattle, Washington 98121 Telephone: 206/441-9080 ls° July 7, 1997 cayts4./ coN Olympic Pipeline Culvert Replacement Project Sediment and Soil Characterization Report Introduction The city of Renton is planning improvements to surface water drainage conveyances along SW 23rd Street at Lind Avenue SW. Improvements proposed for the east side of Lind Avenue are shown in Figure 1, and improvements proposed for the west side of Lind Avenue are shown in Figure 2. These improvements will require the removal of between 2 and 3 feet of sediments which have accumulated in two 9-foot high by 14-foot wide culverts located beneath Lind Avenue on the south side of 23rd Street. Sediments will also be removed from two ponds, one located at the east end (upstream) and one at the west end (downstream) ends of these culverts. In addition, two 18-inch culverts located immediately west of the west pond will be replaced with a 10-foot wide by 3-foot high box culvert. This will require removal of soils in the vicinity of three existing petroleum pipelines that are owned and used by the Olympic Pipe Line Company for the transport of refined petroleum products (e.g., gasoline, diesel,jet fuel, and kerosene). Sediments and soils planned for removal have been sampled and characterized to determine the disposal options available. This technical memorandum briefly describes methods of sample collection and analysis, and presents and discusses the analytical results. Methods Two sediment samples and one soil sample were collected on June 4, 1997. One sediment sample (SD-East) was collected from the sediment surface to a depth of 2 feet at two locations in the pond adjacent to the east end (upstream) of each 14- by 9-foot culvert (see Figure 1). The second sediment sample (SD-West) was collected from the sediment surface to a depth of 1 foot at one location on the west side of the pond adjacent to the west end (downstream) of the 4- by 9- foot culverts (see Figure 2). The soil sample (S-1) was collected from five locations within the area proposed for excavation and replacement of the 18-inch culverts (see Figure 2). At each location, soils were collected at a depth interval of 3.5 to 4 feet below the ground surface, which is approximately equal to the depth of the petroleum pipelines and the average depth of the 9-foot deep excavation required for installation of the box culvert. Soils collected from each of the five locations were composited into one soil sample (S-1) for analysis. Sediment sample SD-East(Figure 1) was collected with a 2-inch diameter aluminum corer. Sediment sample SD-West and the soil samples (Figure 2) were collected with a 2.5-inch diameter stainless steel auger. Each sample was placed in a stainless steel bowl for thorough July 7, 1997 1 Herrera Environmental Consultants mixing with a spoon, and recording of physical characteristics (e.g., color, grain size, and the presence of unusual characteristics such as a petroleum sheen or odor). Samples were then placed in appropriate jars provided by the laboratory. The corer, auger, bowl, and spoon were decontaminated prior to use according to the following procedure: • Scrub with phosphate-free detergent • Rinse several times with warm tap water • Rinse once with 10 percent reagent-grade nitric acid • Rinse once with reagent-grade propanol • Rinse several times with deionized water. The three samples were stored with ice in a cooler and delivered to the laboratory with a chain- of-custody form requesting the following analyses: • Washington total petroleum hydrocarbons-diesel (WTPH-D) extended by U.S. Environmental Protection Agency(U.S. EPA) method 8015 modified • Total Resource Conservation and Recovery Act (RCRA) metals by U.S. EPA methods 6010, 7470, and 7471 • Toxicity characteristic leaching procedure (TCLP) metals by U.S. EPA methods 1311, 6010, and 7470 • Semivolatile organic compounds by U.S. EPA method 8270 • Organochlorine pesticides and polychlorinated biphenyls (PCBs)by U.S. EPA method 8081. The laboratory analyzed the samples as requested according to approved methods and quality control procedures. Results and Discussion The sediment samples were described as dark brown organic silt underlain by gray silt. The surface organic layer was approximately 1.5 feet thick in sample SD-East, and 0.5 feet thick in sample SD-West. Sample SD-West exhibited an oil sheen and a strong petroleum odor similar to diesel fuel. Sample SD-East did not exhibit a presence of petroleum. Soil sample S-1 was described as gray silt, and did not exhibit the presence of petroleum. Laboratory tests of moisture content indicate that the sediment samples were approximately 30 percent water and the soil sample was approximately 25 percent water. The laboratory reports and chain-of-custody records are provided in Appendix A. The laboratory reports include quality control data which were briefly reviewed and found acceptable. The analytical results are presented in Table 1. July 7, 1997 2 Herrera Environmental Consultants The analytical results indicate low concentrations of contaminants with the exception of high hydrocarbon concentrations in sediment sample SD-West(i.e., 210 mg/kg for diesel range hydrocarbons and 290 mg/kg for motor oil hydrocarbons). The results of all other analyses indicated contaminant concentrations which are less than the Model Toxics Control Act (MTCA) cleanup levels (Table 2) and recommended end use criteria for petroleum-contaminated soils (Table 3). In addition, all analytical results are less than dangerous waste criteria for toxic constituents (Table 4). These results indicate that sediment removed from the pond located west of the 14- by 9-foot culverts must be either treated for petroleum contamination(e.g., at a permitted facility such as Holnam, Inc. in Seattle or TPS Technologies, Inc. in Tacoma) or disposed at a municipal landfill (e.g., Cedar Hills landfill). These results also indicate that other excavated sediments and soils may be appropriately disposed on land without treatment. Likely sources of petroleum in the pond sediments include petroleum in stormwater runoff, spills, or discharges of petroleum products near the site. Leakage from the petroleum pipelines does not appear to be a source because the pipelines are not used to transport motor oil, and refined petroleum products such as diesel were not detected in the soil sample collected adjacent to the pipelines. Additional monitoring could be conducted prior to or during excavation of pond sediments to further characterize the extent of petroleum contamination and disposal requirements. July 7, 1997 3 Herrera Environmental Consultants e ��' I • i r/' ;s.4 ::• 14.8____ AabNUA1 T / i •..-.� ..:._ :••••E !21.32 (PI(`INSID MNUMENT CASE)( ` =�� •...E 11.47•'••-- ==• BOUNDARY OF WERAND 7, ...:7141-rERuriE it I / G —S.'.c:•v'S7� ►' l I t� ItYE C O cr 7 1 Ii • 1 `.� err !=Y1'.JE I IS !; - _3 • FO - ' MO ' i '� Fop Cam': iJ/� n o Q 14� I / -PROPOSE 30" CULVERT i 1 Ir! ✓ ' GATT. Pttii I n• a f i - cc.;r Li I ''' '"f ,a../ /..- :!'`...IXCAVATE 2'-3'. 4' WIDE x B''HIGH CULVERT % � . • -- /�% .r.. •••-•WITHIN THIS AREA • REMOVE SILT IN CULVERT • : r- _ 41, ' --- - - o,•ie��i i .•...... . . :•:::•':.. ..EOUNDARY OF WEILAND I ♦eeee�e.. . ...... I I i 1 i i , e e e 0 e e e:..'.•:':':':-:::::':':':':':.• •::.(W-8N) • eeeeo�e � ! t . •r �r1 o��e00O'Oe�.'::.'.'.:........ ..•..'.... -\ i -I I I . . . , ! ►eeeeeeeeee` .-JE 6.5t..:. ----�� •.•,eeeeseeeseeei ----.. eseeeeee.--i eeeee••eei - r I •. eeeee • . —' \ 1 i eeeei, • I I . . &e."e♦ / '� Ate••i e ,lE•6.3± / /I � j 4' W1OE x 9' HIGH CULVERT \., s OVE SILT IN CULVERT I t. \�'S ii Ii E 1 • -' i .1 I - J i I. I i • i • I. ( •= F Ii II i 1 I i I i _ I in I/i/ !Y • ! i O 1 i tn ia 1 1! in r I I i I $ i g Legend Locations of sediment sample SD-East(composite depth 0 to 2 feet) ce Scale: 1 inch equals 30 feet I— a Datum:-NAVD88 6 Figure 1. Sediment sampling locations east of Lind Avenue SW in the city of Renton for the Olympic Pipeline Culvert Replacement Project. 27._ •t------------ 27.3 ________________ 12-7 11!..;..; .- . :G... ..-----' r.i 1 WETLAND imPACT-Alla----------- ---- ; ‘ / c....._;,• : A/ . ._________,•____L_____________ \ ,t.. __. • , •f" • ---sP---- -c,4 - , i •:•,%.*..i...,-;4.-..,. ..- ,:i.4-.;.-.. . .-:-. sp 4 \ , _ - ,...„.•21 la- CULVER 731 s .... 1 I f.7F.Dwi "••"•••••••-—•''••-"••••'''—-—•--•.•...:: , . • . WING WALL. TYPi " ........................................ ‘.......t-- 1 38' CIA.:Yr-r?T•-- - • i • •••._•-.. .....j. ••-: i --;•,i •••%fr.,. -..,...,-,-..‹.:.,,,- ---REMOVE:EXISTING 18 CULVERTS i : -- ""•-:.:•.,.....i.:7:-.., _„..--- • ••••::.,..*•••••;7 I : IE 7.1 ' ;,,-..s.:••• . :••••••:4‘,. i 0 # ....- -...;••., f -,--•:;••,---. •• • 111 "••::••:..--:::-.. III Il . . ,;-. / - _., • ... ./ /-1- • ... -i.,:- \ •,,, ,- , ••• ........-y: :-. ____: . 7 i 'BOUNDARY OF WETLAND..............••••••••.............••.-•••••\ : i III I a 4 A i •iii:::t....:•::-.....:.:::*?...$•.-31::.:.-:...: ,..,. . ..............................# ..,.,•_ E .. .................................... • ......... .................... ....... . ......... ! 1..........................v.,............-: --, 1••••••••••••••••••••••••';;:;;10 WIDE x 3' HIGH CULVERT'-'••••••••••4.• i „ NOIAAM,'WWIAAOIAOIAAAAAA: ,.................. .•-..• •-•. i IE 7.2 P6P4A•WMAAMO!AAAAAAAA. : AAA.040~AAAAMA~A. ,., ................. ............................................ Y.. ,I I• P•.•,;•••.:.:..•..•:.-,:•-.:•..:•.•r:.•••,•::•••:•••••••:••:•:::•,:••::•:,••%:„•••,:••:••••::•••:••:••••:••::•:,%:•:••••••••:•::•••%•,•:.,••„••••••••••••.••• WING WALL TP L •: ................ ... :„I : :f:::::::::::::•:::$> :• •---7,;,.,-I 4.........:-...x.......-:-.%:••••••••••: EX C A VAIE 2'—3' WI THIN••••*-••'••'.'•'•••••••••••••••••••••••••••••••• -•••••-..r•••1•••••••;••••:•:••••:,••..: • ••••••••.•• THIS AREA (WETLANDIMPACT AREA) . ; ' ••••••::::::.:-.:::::....;....r......... -.:. / : :.: ( ItIf :::I 1 •••. \ *. • ---:-. i f.-,•,1 :.,.--,:i i\:•47,1" LI I OBoF uWND'TA1IhAyNLD--i l,•.•.?:•'.'::.•:BEYOIXS T.CINUGL-V-ET..--..'-.,'-.',;,'"" . (W— W4 , .7.5Nt• -,'v., .........--. .................................................... ........ • i a i: ---- -., rt>- ....,,....- --, :41,• , : ...7.'.., , : ,.. ....,.. r1 , .................:,,,...' 1 5.4 ----- ------- , .... ;3.•-.) . --,. — ;9.7-----------------721.3 --- ......------------------ns'. I ...-. / 2 ..,s tei .- i i i ••••••....., 0 I i i ....,; . ••,,,. --\ • cx •• ; - • \ *a , • .- \ I go; I a • • ; i \ . • c•. Legend o o o < a. III Location of sediment sample SD-West(composite depth 0 to 1 foot) ..-- o o 111 Locations of soil sample S-1 (composite depth 3.5 to 4 feet) a < cc Scale: 1 inch equals 30 feet ...- si Datum: NAVD88 d d Figure 2. Sediment and soil sampling locations west of Lind Avenue SW in the city-of Renton for the Olympic Pipeline Culvert Replacement Project. Table 1. Analytical results of sediment and soil samples collected for the Olympic Pipeline Culvert Replacement Project. Sediment Sediment Soil Sample Sample Sample SD-East SD-West S-1 Petroleum Hydrocarbons(mg/kg dry weight) Diesel Range Hydrocarbons 16 210 6.8 U Motor Oil 58 290 26 Total Metals(mg/kg dry weight) Arsenic 7 U 6 U 6 U Barium 64.6 63 75.3 Cadmium 0.6 0.3 0.2 U Chromium 29.9 32.2 33.1 Lead 11 10 10 Mercury 0.07 U 0.06 U 0.05 U Selenium 7 U 7 6 U Silver 0.4 U 0.4 U .0.3 U TCLP Metals(mg/L) Arsenic 0.05 U 0.05 U 0.05 U Barium 0.250 B 0.272 B 0.580 B Cadmium 0.002 U 0.002 0.002 U Chromium 0.005 U 0.005 U 0.005 U Lead 0.02 U 0.02 U 0.02 U Mercury 0.0001 U 0.0001 U 0.0001 U Selenium 0.05 U 0.05 U 0.05 U Silver 0.003 U 0.003 U 0.003 U Semivolatile Organic Compounds(ug/kg dry weight) Phenol 180 U 190 U 180 U Bis-(2-Chloroethyl)Ether 180 U 190 U 180 U 2-Chlorophenol 90 U 94 U 88 U 1,3-Dichlorobenzene 90 U • 94 U 88 U 1,4-Dichlorobenzene 90 U 94 U 88 U Benzyl Alcohol 450 U 470 U 440 U 1,2-Dichlorobenzene 90 U 94 U 88 U 2-Methylphenol 180 U 190 U 180 U 2,2'-Oxybis(1-Chloropropane) 90 U 94 U 88 U 4-Methylphenol 90 U 94 U 88 U N-Nitroso-Di-N-Propylamine 180 U 190 U 180 U Hexachloroethane 180 U 190 U 180 U Nitrobenzene 90 U 94 U 88 U Isophorone 90 U 94 U 88 U 2-Nitrophenol 450 U 470 U 440 U 2,4-Dimethylphenol 270 U 280 U 260 U Benzoic Acid 900 U 940 U 880 U bis(2-Chloroethoxy)Methane 90 U 94 U 88 U 2,4-Dichlorophenol 270 U 280 U 260 U p9seddat.xls July 7, 1997 Herrera Environmental Consultants Table 1. Analytical results of sediment and soil samples collected for the Olympic Pipeline Culvert Replacement Project (continued). Sediment Sediment Soil Sample Sample Sample SD-East SD-West S-1 Semivolatile Organic Compounds(ug/kg dry weight)(continued) 1,2,4-Trichlorobenzene 90 U 94 U 88 U Naphthalene 90 U 94 U 88 U 4-Chloroaniline 270 U 280 U 260 U Hexachlorobutadiene 180 U 190 U 180 U 4-Chloro-3-methylphenol 180 U 190 U 180 U 2-Methylnaphthalene 90 U 94 U 88 U Hexachlorocyclopentadiene 450 U 470 U 440 U 2,4,6-Trichlorophenol ' 450 U 470 U 440 U 2,4,5-Trichlorophenol 450 U 470 U 440 U 2-Chloronaphthalene 90 U 94 U 88 U _ 2-Nitroaniline 450 U 470 U 440 U Dimethylphthalate 90 U 94 U 88 U Acenaphthylene 90 U 94 U 88 U 3-Nitroaniline 540 U 560 U 530 U Acenaphthene 90 U 94 U 88 U 2,4-Dinitrophenol 900 U 940 U 880 U 4-Nitrophenol 450 U 470 U 440 U Dibenzofuran 90 U 94 U 88 U 2,6-Dinitrotoluene 450 U 470 U 440 U 2,4-Dinitrotoluene 450 U 470 U 440 U Diethylphthalate 90 U 94 U 88 U 4-Chlorophenyl-phenylether 90 U 94 U 88 U Fluorene 90 U 94 U 88 U 4-Nitroaniline 450 U 470 U 440 U 4,6-Dinitro-2-Methylphenol 900 U 940 U 880 U N-Nitrosodiphenylamine 90 U 94 U 88 U 4-Bromophenyl-phenylether 90 U 94 U 88 U Hexachlorobenzene 90 U 94 U 88 U Pentachlorophenol ' 450 U 470 U 440 U Phenanthrene 90 U 94 U 88 U Carbazole 90 U 94 U 88 U Anthracene 90 U 94 U 88 U Di-n-Butylphthalate 90 U 94 U 88 U Fluoranthene 90 U 190 88 U Pyrene 90 U 190 88 U Butylbenzylphthalate 90 U 94 U 88 U 3,3'-Dichlorobenzidine 450 U 470 U 440 U Benzo(a)anthracene 90 U 94 U 88 U bis(2-Ethylhexyl)phthalate 290 B 750 B 100 B Chrysene 90 U 130 88 U Di-n-Octyl phthalate 90 U 94 U 88 U Benzo(b)fluoranthene 90 U 110 88 U Benzo(k)fluoranthene 90 U 97 88 U p9seddat.xls July 7, 1997 Herrera Environmental Consultants Table 1. Analytical results of sediment and soil samples collected for the Olympic Pipeline Culvert Replacement Project (continued). Sediment Sediment Soil Sample Sample Sample SD-East SD-West S-1 Semivolatile Organic Compounds(ug/kg dry weight)(continued) Benzo(a)pyrene 90 U 94 U 88 U Indeno(1,2,3-cd)pyrene 90 U 94 U 88 U Dibenz(a,h)anthracene 90 U 94 U 88 U Benzo(g,h,i)perylene 90 U 94 U 88 U Pesticides/PCBs(ug/kg dry weight) alpha-BHC 2.3 U 2.4 U 2.3 U beta-BHC 2.3 U 2.4 U 2.3 U delta-BHC 5.3 Y 2.4 U 2.3 U gamma-BHC(Lindane) 2.3 U 2.4 U 2.3 U Heptachlor 2.3 U 2.4 U 2.3 U Aldrin 2.3 U 2.4 U 2.3 U Heptachlor Epoxide 2.3 U 2.4 U 2.3 U Endosulfan I 2.3 U 2.4 U 2.3 U Dieldrin 4.5 U 4.8 U 4.5 U 4,4'-DDE 4.5 U 4.8 U 4.5 U Endrin 4.5 U 4.8 U 4.5 U Endosulfan II 4.5 U 4.8 U 4.5 U 4,4'-DDD 4.5 U 4.8 U 4.5 U Endosulfan Sulfate 4.5 U 4.8 U 4.5 U 4,4'-DDT 4.5 U 4.8 U 4.5 U Methoxychlor 23 U 24 U 23 U Endrin Ketone 4.5 U 4.8 U 4.5 U Endrin Aldehyde 4.5 U 4.8 U 4.5 U gamma Chlordane 2.3 U 2.4 U 2.3 U alpha Chlordane 2.3 U 2.4 U 2.3 U Toxaphene 230 U 240 U 230 U Aroclor 1016 45 U 48 U 45 U Aroclor 1242 45 U 48 U 45 U Aroclor 1248 45 U 48 U 45 U Aroclor 1254 45 U 48 U 45 U Aroclor 1260 45 U 48 U 45 U Data qualifier definitions: U Indicates compound was undetected at the listed concentration. B Indicates possible/probable blank contamination. Flagged when the analyte is detected in the sample as well as the method blank. Y Analyte may be present at or below the listed concentration,but in the opinion of the analyst confirmation was inadequate. p9seddatxis July 7, 1997 Herrera Environmental Consultants Table 2. Model Toxics Control Act (MTCA) cleanup levels for soil . Hazardous Substance Method A Cleanup Level Method A Cleanup Level (residential)(mg/kg) (industrial)(mg/kg) Arsenic 20.0 200.0 Benzene 0.5 0.5 Cadmium 2.0 10.0 Chromium 100.0 500.0 DDT 1.0 5.0 Ethylbenzene 20.0 20.0 Ethylene dibromide 0.001 0.001 Lead 250.0 1,000.0 Lindane 1.0 20.0 Methylene chloride 0.5 0.5 Mercury(inorganic) 1.0 1.0 PAHs(carcinogenic) 1.0 20.0 PCB mixtures 1.0 10.0 Tetrachloroethylene 0.5 0.5 Toluene 40.0 40.0 TPH(gasoline) 100.0 100.0 TPH(diesel) 200.0 200.0 TPH(other) 200.0 200.0 1,1,1 Trichloroethane 20.0 20.0 Trichloroethylene 0.5 0.5 Xylenes 20.0 20.0 a Caution on misusing method A tables. Method A tables have been developed for specific purposes. They are intended to provide conservative cleanup levels for sites undergoing routine cleanup actions or those sites with relatively few hazardous substances. The tables may not be appropriate for defining cleanup levels at other sites. For these reasons, the values in these tables should not automatically be used to define cleanup levels that must be met for financial,real estate, insurance coverage or placement,or similar transactions or purposes. Exceedances of the values in these tables do not necessarily trigger requirements for cleanup action under WAC 173-340. Source: WAC 173-340. July 7, 1997 9 Herrera Environmental Consultants . Table 3. Recommended end use criteria for petroleum-contaminated soils'. Analytical Soil Class(ppm) Analyte Method 1 2 3 4 Heavy fuel WTPH-418.1 <60 60-200 200-2,000 >2,000 hydrocarbons mod. (C24-C30) Diesel WTPH-D <25 25-200 200-500 >500 (C12-C24) Gasoline WTPH-G <5 5-100 100-250 >250 (C6-C 12) Benzene 8020 <0.005 0.005-0.5 5.0.5 >0.5 Ethylbenzene 8020 <0.005 0.005-20 >20 Toluene 8020 <0.005 0.005-40 5.40 >40 Xylenes(total) 8020 <0.005 0.005-20 >20 'Treatment is recommended for all class 3 and 4 soils. Class I soil uses: Any use which will not cause threat to human health or the environment Class 2 soil uses: Backfill at the cleanup site Fill in commercial or industrial areas Cover or fill in permitted landfills Road subgrade or other road construction fill Fill in or near wetlands, surface water, ground water, drinking water wells, or utility trenches is not recommended. Use as residential topsoil is also not recommended. Class 3 soil uses: Treatment Disposal at the original site(no solid waste disposal permit needed) Road construction(no solid waste disposal permit needed) Use or disposal in permitted municipal landfills Permitted as a new petroleum contaminated soil(PCS)landfill (An evaluation should be made to ensure that disposal will not cause a threat to human health or the environment,e.g.,use near water bodies). Class 4 soil uses: Treatment Disposal in a permitted municipal landfill Permitted as a new PCS landfill Source: Guidance for Remediation of Petroleum Contaminated Soils,Washington State Department of Ecology Toxics Cleanup Program,April 1994. July 7, 1997 10 Herrera Environmental Consultants • Table 4. Dangerous waste criteria for constituents analyzed by the toxicity characteristic leaching procedure (TCLP). Toxic Constituent Maximum Extract Maximum Waste Concentration(mg/L) Concentration'(mg/kg) Arsenic 5.0 100 Barium 100.0 2,000 Benzene 0.5 10 Cadmium 1.0 20 Carbon tetrachloride 0.5 10 Chlordane 0.03 0.6 Chlorobenzene 100.0 2,000 Chloroform 6.0 120 Chromium 5.0 100 o-Cresol 200.0 4,000 m-Cresol 200.0 4,000 p-Cresol 200.0 4,000 Cresol 200.0 4,000 2,4-D 10.0 200 1,4-Dichlorobenzene 7.5 150 1,2-Dichloroethane 0.5 10 1,1-Dichloroethylene 0.7 14 2,4-Dinitrotoluene 0.13 2.6 Endrin 0.02 0.4 Heptachlor(and its epoxide) 0.008 0.16 Hexachlorobenzene 0.13 2.6 Hexachloro-1,3-butadiene 0.5 10 Hexachloroethane 3.0 60 Lead 5.0 100 Lindane 0.4 8 Mercury 0.2 4 Methoxychlor 10.0 200 Methyl ethyl ketone 200.0 4,000 Nitrobenzene 2.0 40 Pentachlorophenol 100.0 2,000 Pyridine 5.0 100 Selenium 1.0 20 Silver 5.0 100 Tetrachloroethylene 0.7 14 Toxaphene 0.5 10 Trichloroethylene 0.5 10 2,4,5-Trichlorophenol 400.0 8,000 2,4,6-Trichlorophenol 2.0 40 2,4,5-TP(Silvex) 1.0 20 Vinyl chloride 0.2 4 a Maximum waste concentration is based on wet weight assuming all of the constituent is extractable,which is a worst-case assumption used when results of the toxicity characteristic leaching procedure are not available. Source: WAC 173-303 July 7, 1997 11 Herrera Environmental Consultants Wetland Delineation Report City of Renton SW 23rd Street Drainage Improvements Prepared for: City of Renton Surface Water Utility 200 Mill Avenue South Renton,WA 98055 Prepared by: Jones&Stokes Associates,Inc. 2820 Northup Way,Suite 100 Bellevue,Washington 98004-1419 425/822-1077 '998 In association with: oEv �Ty n� Nr R.W.Beck Ct OF R CNN/NG 1001 Fourth Avenue,Suite 2500 Seattle,WA 98154-1004 December 15, 1997 Table of Contents Page Wetland Delineation Report City of Renton SW 23rd Street Flood and Drainage Improvements 1 Introduction 1 Project Location 1 Project Description 2 Summary of Site Conditions 5 Results of Wetland Delineation 5 Wetland W-7S 6 Wetland W-8N 6 Wetland W-1ON 7 Functions and Values of Wetlands within Project Site 8 Project Impacts and Measures to Reduce Wetland Impacts 9 Citations 13 BECKAVEThANDS IVISAru 1 I I List of Tables and Figures Follows Page Table 1 Summary of Site Conditions of Wetlands W-7S, W-8N, and W-10N at the SW 23rd Street and Lind Avenue Drainage and Restoration Project Site 5 Figure 1 Project Area Map - Renton SW 23rd Drainage Improvements 1 2 Wetlands within the City of Renton East Side Green River Watershed 1 3 Location of Proposed Project Elements along the SW 23rd Street Channel 2 4 Plan View Box Culvert SW 23rd Street Drainage Improvements 2 5 Longitudinal Section of 10-Foot by 4-Foot Box Culvert West of Lind Avenue 2 6 Plan View of 24-Inch Culvert at the SW 23rd Street Channel East of Lind Avenue 4 7 Longitudinal Section of 24-Inch Culvert East of Lind Avenue 4 BECK/WETLANDS 12/15/97u 11 Wetland Delineation Report City of Renton SW 23rd Street Flood and Drainage Improvements Introduction This report presents the results of a wetland delineation conducted May 23, 1997 for the City of Renton's SW 23rd Street flood and drainage improvement project. Wetland delineations were conducted within the areas where construction will occur and where structures will be placed for drainage improvements. The wetland delineation was conducted using the U.S. Army Corps of Engineers Wetland Delineation Manual (Environmental Laboratory 1987). This method is summarized in Appendix A. This report has been prepared for the City of Renton Public Works Department and is intended to be used for the following purposes: • U.S. Army Corps of Engineers review of the project. The Corps is the federal agency that regulates the discharge of dredge and fill material into wetlands and Waters of the United States. This report will be submitted to the Corps for verification of the delineation and as part of the Joint Aquatic Resource Permit Application. • City of Renton Planning Department review of the project as part of the SEPA process and for compliance with the City of Renton's wetland regulations as stated in the City's sensitive areas ordinance. This report is a stand alone document and presents project description, results of the delineation, functions and values of the portion of wetlands within the project area, project impacts, and methods used for the delineation. The wetland delineation was based on best professional standards using accepted field methods. Final verification of jurisdictional wetland boundaries, however, is the responsibility of the Corps. Project Location The project site is located at the intersection of SW 23rd Street and Lind Avenue in Renton, 'Washington (Figures 1 and 2). Proposed activities would occur along the channel south of BECK/WETLANDS 1 12/15/97u I To Seattle Black River Pump Station ' --)1E- %i , - To Bellevue , I-5 ;;‘ _ `�� Renton ` v\ Panther Creek • d11 1-405 Wetlands I \_(le' 1 I (r, d >` Project 1 '"► , SW)23rd Area r;- I i CHI St, 3 W I Tukwila, TL�k Wit a (( it! � l\ Kent i ��r" s. lit 1 TI Black River Water i L�� o e I I 1 Quality Management 1- `� '\ P4 15 ,• 1 Plan Study Area rr`\j S1W. 43rd St.i �A-Ll- ` Panther �i —•••� / N..LI Creek w I / it .) it 1-`. I �(L' ;'i •i, i I I `„� c' . i Renton_ •••� ESGR ��- 681) 1..� �-1CIng County �� Watershed IV 1 • • Boundary to Tacoma Upper ! v Panther Lake ,./ r Springbroo k3' V I :N reek 11 .S- ?. 212th St. 1 Garrison _ R`,'2 / r: --I Creek . `. . / ai, KentL...J L... I1_J i(..111.12 Lagoons I I \ Co. I I King I !, Kent 167 I 1 1 Ii 1 1 - r __ I , , ,� , ,,j .--....\ I L_ I � � I King County J 1h I-'-N/\ \ Kent i / ` = - 1 /^tom ` I AA// I \ i . I 1/4\ I 1 Ij I ProCt Site: _ I 1— , �L- -`I NW 1/4, S30, T23N, R5E �__i i I_ l L_ SW 1/4, S19, T23N, R5E LAT. 47' 27' 30" I-- Applicant: City of Renton LON. 122' 12' 45" i Public Works 7153-001 06/13/97 Figure 1. Project Area Map — Renton SW 23rd Street Drainage Improvements 03 O F L Z Z K t e $ W N W E a W L f- 2 ; a { F F a 30 4 Y �, ica,� _ zo .d 1101E 7A=3Y1 -..4. 6 Lf 34=5U. .--- '01� 0 .d PROFILE PROPOSED 24" CULVERT W W SECTION SC r-20. 0 0 ri 0 rn N I N 0 0 o u l Applicant: City of Renton Date: 12-15-97 Scale: 1"=20' Datum: NAVD88 = Project Name: City of Renton SW 23rd Street Drainage Improvements 0 Figure 7, Longitudinal section of 24" culvert east of Lind Avenue. _ . 1 WATE Tir, _......— R VA Xi .14 "------MANHCCE /EXI\ ..----- _---------I 0-------------- - 1 ,-- ) --<4; • I I i • 1- 11 -) /1 1 Pg. ' •• -'-. •Li Awnw silio"----"------------ __ _Hi I 1 '.!-. 1 1 4:4 I /-...isiiS4.1••••••••••••.- I-T-MILKUNE MONtENA ,,' i / 4•.0 (PARCEL #3340400285) EL 21.32 (iitNiliN DO I i ; , '''/ . - : EXISTING MONUMENT It CASEY.3'.11101.. 1—' •.- .0-i- :,i•A'-'-'1E 11.47•••-••••-.. BOUNDARY OF WETLAND — ---------- - '. -1-1—r—p— IL r , / • i N Zfr WATER 'au. ........._. kl AIN PRO1T.FIE co;;€.5--,1---.-11 I 1----- -i . N --- !e, : .........----- . ' -- N, I No H NO-4., rs 1 1 -r--FO -- \ F° ----cz-----0 u noir pax I i i VA111 \ iiii- —0--e I q--0 ___________- "— 1 „ -0::"..,..„,„:.— !fi:' rr:TiO, .1MPiPP.R i I I 1;Hs. -{--1 ( - -- — _ _ ...._. ........_ r i 1 I -' '. • i •••••• i 1 11 /CONDUIT -EDGE OF ASPHALT PAVEMENT 17 / \ --/'''t/ _r„,„_-•--s...;R_._OPOziASEDIE p20$4: CULVERT ‘„-..._._. -'). • • : F0_,..___ ......_:-. __.,..__ f•- ?:--F0- 1 11 Pi, .0tlea•!.>;--- -7 --,---...-t.; ix__________ . - ....- O&M-PIC-PIPEUNE___. ,, ___ ,. ,. .---. - ---,--- --(PARCEL-43023n59083)... I 1 I -, ,-- ,- •- RIPRAP, //,--- -1 T,o2„.„ - , -- ./.„.,-..,,,:-..-: 22.I : -----: — -- (1,.. WIDE x 9.1/1IGH ' I --" • ' • • .%-."-..... .. .. . ..'....'........ . . . . CULVERT. REMOVE :..,." , / _----% , "0:1' - -,.. ,„ ------- ----- — -- - SILT IN CULVERT f-I / /- :.--Aor-P711/'.............v-7-77-1.tpfro*-. 4:311 bilk% 1 - I iI; 11 I i -.4..,• • ';i:10p4;,•..•y- "•••••• - •--••WERAND CONTINUES TO EAST_ i- 1 E i I I I I c..: i : i , , -• •EXCAVAWEGIMENTS---....- . \ 1 /2._ II 2 1 i 1 i : • " • ..2*-3',W1 IS AREA \ ---------- • -- -f•.-4-t-R— , . . 6.5 i „-----------,,, • i 1 ---- , / . ill • .-.- .. j,1- -- ....._....----,---- ' . . 1 B6UNDARY OF WETLAND : • ‘, ‘.., • • .. \ • 1 1 i I 1 6, IyaN --- /' (f.i --t-- 1..._c_i_..1-._`.........,__. , ,...,,,,,_ • I .5,-31 / ; a\ . - ,---- / WIDE x HIGH 1 Li 2, NZIPP 1 , CULVERT. REMOVE '-'-i SILT IN CULVERT 1 ult.:5 . D I ' I ., La ' . 0 , 1 W8N-PI --' Z ' • 1 . 2 . Li i 1 I 0 : --- i , . > i : , / 14 uf, P : i • I PUGET WESTERN .": I i..i 5-<- ! (PARCEL #2193100010) o a w : i : r. Z CURB-F-1 1 -----, i : 1 1 • ', : I • • i . - ...... ::;,2 oi :.-21,2r:2'.7.--, , t,..„.• ; . ii ii,j '...1Ni n — _ .-, : • .c.i° Applicant: Cy of Renton • ,‘ . fr Date: 12-15-97 i 1 ' •. •,, ' ... ,„ , \, Scale: 1n=30' I '. ', . ,,,,,,_.,...._..,..„_, '-, ii Datum: NAVD88 6 .„......., Project Name: City of Renton SW 23i'd, Street Drainoge—Improvements ---, --, 6 Figure 6, Plan view of 24'' culvert at the SW 23rd Street channel east of Lind Ave s 0 0 0 1 . lii ., c j1 1 h , i I 1 I , IJ ' 1691it ,y 4- Ii 0 I 1•.i. 3 l I 8J 1 % C 3NR 3 3dId PV133Q211;� , • o O; i I gb . i l; i g 0 3Nfl3did rUQ.Jd'.z 4 ' '•• ' i N j E i i a 1 .1 i E 3NR3dId Nf13 2113c .1 .�. i Y f I l'' 4 Si Ii . E ol' Ili 1 i f i� hill 'f nS ttoyy 0 0 0 n ava Q9C&YN im NI NOLLVA3l3 97 Applicant: City of Renton Date: 12-15-97 g Scale: 1"=20' Datum: NAVD88 Project Name: City of Renton SW 23rd Street Drainage Improvements Figure 5, Longitudinal section of 10' x 4' box culvert west of Lind Avenue. _ . .2 .:, _________._21.3 36- CUL ___.__ --- ___ - . ,c.aiY vAPE -• - ______ 10.0 --------- ii- Aucl-IORs-- 16.4 N, 16.4 ---,- • tr , J....›.- 18.4 .t., - - --- . C_ - - _ ...._..., ....ei EXISTING ACCESS ROAD -- — ...AU: -- CITY OF SEA .._ it.iT PROPERTY, PARCEL #3023059066) ______,. __. \i....)- WE --,,, -- -4.- ACT AREA i . ------,----fft---4-- --. -----0----k ‘ , ------- - --------------- IE 6.5 1 ' n__.L - - - , i ‘.. • I()- ,___ .-,......., I _-4-ROCK SURFACED ;CT 1 MAINTENANCE-ACCE fq - "..•""-"•" •• "' ,f0..444 . f 36 SD -4" i! • , I .2.-__.,...--- "%ii; 1.40...te -....:•::.::::.. REM' OVE EXISTING 18" CULVERTS V4111r.eFf,4t, ....._ ••••••‘,.:...!---1- EXCAVATE SEDIMENTS---- / W1 ON-P3 -,.. ---<,( • i Apensk. 0 dfi:.Wi / --„,-z,... , MN& .... „:•••• 2.-3. WITHIN111R REA. ... OliRIPRAP / 1-..)•.›..... •....... aliir • --1 i c ,..r;•)(x,"\ 2'', TYP .--...-:\ ' , ...-----..... WION-0 /;-/ ‘a..'.1-•' 0f1-•.•:••••%-.4-9O#.0.-..i•o r;-#,•"•. -,.... `,,\\ ••••BOUNDARY Of' WtThAND—" ' s ss ' i i %:!tiej-14,WA4e.• .. , • s\s-c .4:4, 4 . . .: • , ........................................................... . I 411-..,:irit:tet317r- . • :: 1 :, i P4143112f. -.• ' . : -: -: .1' \‘' i 44i, ; ... .. .. ... ' .................................................................. I 1 ------•-.-••-..... ....--.•.........-••.--........--::::.......-::::.•.. *i./(it g : ' . .* ; ..•• • • .• .• . :. . 1: . :.• 3.,. . Y.' ti2 a. iz 1 \ 1,1 . :-...;•••••...._:•:• ‘..:••'—' !I 1 \ \ s•1/4.,.fit,_____...1..____. zi '.f ltto 5-:!' -.14.8-- .................. ..........................-............. . ,..... t.: .................................................................... -• -..--18.0-,":-..---.5\ .J. .a. 1.1 - BOU6DARy-Or WETLAND \ . .•.'s..........(PARCEL 13023059007)............. .. .. .... . . .... ..... ................... ..___,- ••,-•,. '1 -------.--i,'. / • .... .,..:,.,....d. .---.... . ..'• -'-'- -••'••'.--- ' , ___.-------'--:'(..'"--:---' ,r , - -......--- .___ /0-- - ,,:- .... 1ii.7 ---„,„._ • a; ....,, . 0 1 ...........„ r... ., cp - - OLYMPIC PIPELINE " (PARCEL 13023059084) o N. \ ..r) . o Applicant: City of Renton c • . --... .•,.,, •---- Date: 12-15-97 .. „ Scale: 1 =30' Datum: NAVD88 ci Project Name: City of Renton SW 23rd Street Drainage Improvements ,..5 Figure 4, Plan View Box Culvert S.W. 23rd Street, West of Lind Avenue S.W. i W fir- r"z 4 o / 3 �J as ...li: ..._—' ..— �. E 1) <.iii i 6g• 1 t 1 • -f--..:•::- .'1,.17...-eii t t 1,90j :. , {�nN \ • I -00 + KOI-K • _ -Y <NJ riioz l• \ :: • .I, __. M 3rw3.lL..a( -- ;•r=-•'-`..:w--= ;t, - ( ,'� . ,`` `t-qq f.._..1 m L. N Z 8 t` o_ 0 0 .i it ,J zzZ8 <0z ti ::::: -1 (. 0,b1,-- 36 ws _�xs. VFW Y l >—< o Km JIDWC)K O3 = o Fl o ice'•�•.A33a3 Hooae9Nl. Applicant: City of Renton o Date: 12-15-97 Scale: 1"=400' g Datum: NAVD88 Y Project Name: City of Renton o SW 23rd Street Drainage Improvements Figure 3, Location of proposed project elements along the SW 23rd Street channel A ; w ,r 4.-"•-•:...t::7•:•:ri.f...;-::::-.1W-5$1'./ \•. ,_... ;t_. t} • s r - . . k _ .. . „ 19:' y , :. . W-21 ?1 , .. �:-- 500' 0 500' 1000' i 1 ...1if-3i - :.5 a!-!—-s' • S Iwn viy 11 SCALE Y• ;}R..'- :- .<'i —480 1 eat•.ry. CW-e 14-i3Nb\ W-13Nc \ • w '`I • W • .j . 4:— \Wtssr. ' F" — w-135b/ —13Sd 1 W t3Sg ,_:, W-1356 • — -.W--13SJ '3;i: 3t•;_: T £'�-,... �.T %.• ' : W1440 ::::.110.1-50,.v,.*.1.491n.-:';. ::::1:7":"7.', '.. 1 7. i-.-;--• . e-.1:,:"::. 11.i.1,...:i'..4:1'7.t.:.'A • • 3 , —W-14 i� =`x �'a=' 1,7 I. •, i -- LEGEND . ...... - -. . .._... . .. . ........ a-W 18 - .. —••— Project : ... .i W-32` ��t Area .: •,...:' \�•� ,'�.� t:r_ 777 ,. �- > wetland l r • `"""", mitigation Wetland — . . 1 W-4an . •_. + • - •.l �W-34 s 1ew a ,: i • Lf rw-1 r Applicant: City of Renton 1 - 11 /�.- .;`\ -- -w-s2 Public Works w_50 Project: Renton SW 23rd Street Drainage Improvements --- s Met st 7153-001 06/13/97 Figure 2. Wetlands Within the City of Renton East Side Green River Watershed To Seattle Black River Pump Station j� To Bellevue I-5 11� --)IE `�, Renton ll• \ Panther Creek d;� ��\ 1 I-405 Wetlands -1 - ,co '. -. i 1 ;r SV.23rd & 'rreeaeCt 1 1 it xlc St. �� I Tukwila Tukwila !(r Y �• i f� Kent '-1 N. ; �1 c %` . �• Y. w ' �I Black River Water I� il( o' a 1 I Quality Management I. `��•\ P J -& A i Plan Study Area c 59/ T- 1 ..S1W. 43rd St./ �A. r^ -____ ,_ Panther �I ; .—...-� i \..I Creek :Y r-�/ .--- % I d , II .� ,3 \. Renton --� 1 ESGR 181 I I ---Kkg County \ Watershed I-S ( Boundary To Tacoma ) tUpper i:,<},, Panther Lake ce reek --\` \ / r a --1 Garrison \--, N-N tx Rae � � I Creek � ` � .1 TT...—.^` N \ \ ' KentL...J E... La 1 L-i �.__ t/• Lagoons I ( i �- King Co. i 1 I M. I r \,.. Kent 167 I• 1 I — i f.�� I^� 1 1 1 I King County J _ I 1 t Kent 1 i .--- .I ci ' \ I I i 1--I I \ I Project Site: _ I .> 1 __� __ .I NW 1/4, S30, T23N, R5E i__/ `1 1_ \l SW 1/4, S19, T23N, R5E --\ LAT. 47' 27' 30" I- Applicant: City of Renton LON. 122' 12' 45" ; Public Works 7153-001 06/13/97 Figure 1. Project Area Map — Renton SW 23rd Street Drainage Improvements c. Method of dredging: Backhoe and/or vacuum truck parked along SW 23rd Street access road. 15. List other applications, approvals, or certifications: Shoreline permit- City of Renton after SEPA decision HPA(This JARPA will be sent to WDFW) SEPA Lead Agency: City of Renton SEPA Decision Date: Proposed activities 1 and 2 described in this JARPA are elements of the City's East Side G*en River Watershed Project (ESGRWP). Detailed environmental review is included in the ESGRWP Plan and EIS (Draft EIS December 1996 and Final EIS September 1997). A separate SEPA decision is being processed for proposed activities 3, 4, and 5 as described in this JARPA with a scheduled decision date of January 1998. 16. Has any agency denied approval? No. If yes, explain: SECTION B 17. Total cost of project: $200,000 18. Local government with jurisdiction: City of Renton. Shoreline Environment designation: Conservancy Zoning designation: Industrial 19. For corps permits, provide names, addresses, and telephone numbers of adjoining property owners, lessees, etc. Martin Seelig, P.O. Box 1925, Bellevue, WA 98009 Phone(425)454-0885 City of Seattle, Shirley Lukhang Real Estate Services, Dexter Horton Building - 10th Floor; 710 Second Avenue, Seattle, WA 98104 Phone (206)386-9754 Olympic Pipeline Company, Craig Hammett, P.O. Box 236 Renton, WA 98055 Phone (425)235-7746 Puget Western, 19515 North Creek Parkway #310, Bothell, WA 98011 Phone (425)487-6550 11 11 41111 11. Will fill material be placed waterward of OHWM or Line for fresh or tidal waters? a. Fresh waters-yes; volume: Approximately 4 cubic yards of rock riprap would be placed at the new 24-inch culvert outlet in the SW 23rd Street channel east of Lind Avenue and approximately 20 cubic yards of riprap at the inlet and outlet of the new box culvert west of Lind Avenue. b. Tidal waters -volume: None. 12. Will material be placed in wetlands? Yes. As discussed in Block 10 the culverts will be placed within the SW 23rd Street channel which is considered part of the larger wetland complex. Portions of the project occur within nonvegetated portions of the channel. a. Has delineation been completed? Yes; see attached report titled "Wetland Delineation Report for the SW 23rd Street Channel" b. Type and composition of fill material: Same as 1 la. c. Material source: Local suppliers. d. List all soil series located at the project site and indicate if hydric (county): • Puget silty clay loam(Hydric) • Seattle muck(Hydric) • Tukwila muck (Hydric) • Urban land 13. Will proposed activity cause flooding or draining of wetlands? As discussed under impacts in Section 8, the 2-year water elevations in wetland W-8N would be lowered but is not expected to affect the wetland acreage or community. Wetland W-7S could be partially drained by restoring the pre-existing hydrology to this channel. Impacted area (acres): 0.5 acre at wetland W-7S. 14. Will excavation or dredging be required in water or wetlands? Yes. Sediment from the twin 9-foot by 14-foot culverts and sediment approximately 20 feet upstream and 35 feet downstream of the culvert openings will be removed. Approximately 130 cubic yards of sediment would be removed from the channel and twin culvert openings. Installation of the new box culvert west of Lind Avenue the new 24-inch culvert under SW 23rd Street east of Lind Avenue would require a minimal amount excavation (less than 5 cubic yards) within the wetlands. Volume (cu yds): 135 a. Composition of material removed: Accumulated mineral soil sediment b. Disposal site for excavated material: Contractor selected and City approved upland site. 10 le° • elevations in the channel portion of the wetland and water elevations associated with the proposed project in place.) Although the installation of the new culvert would reduce the frequency and depth of inundation during storm events along the channel, the scrub-shrub vegetation associated with this wetland is not expected to change. Species such as willow, reed canarygrass, and spirea growing in the wetland, and outside of the channel within the wetland, are tolerant of changes in water levels and are expected to adapt to the new hydrologic regime. High ground water within 12-18 inches of the surface of the wetland would continue to support the growth of scrub-shrub vegetation. Additional scrub-shrub vegetation may establish within the channel from the reduced water levels. (5) Remove sediment from the twin 9-foot by 14-foot culverts under Lind Avenue at SW 23rd Street and immediately upstream and downstream of the culvert openings. Sediment that supports approximately 970 square feet (0.02 acre) of emergent vegetation (American brooklime)would be removed from the pool downstream of the culvert openings. Wetland vegetation would not be affected in the area upstream of the culverts; sediment would be removed from an unvegetated area of approximately 590 square feet upstream of the culverts within the wetland. Wetland vegetation would not be affected in this small area where plants have not yet established. Protection of water quality downstream of the sediment removal area would be accomplished by working during low flows and bypassing the flows around the work area. Sediment samples will be taken before construction to evaluate sediment quality and disposal requirements. Straw bales placed in the channel would be in place to trap sediment and soil pollutants before reaching Springbrook Creek. 9. Proposed Starting Date: June 1998 Estimated duration of activity: 10 weeks Will project be conducted in stages?: Individual elements of the project may be constructed simultaneously or sequentially. 10. Will any structures be placed: a. waterward of the OHWM? Yes: • Approximately 5 feet of the 24-inch culvert's outlet east of Lind Avenue (proposed activity No. 4) within the SW 23rd Street channel (which is part of wetland W-8N). • The pre-cast concrete box culvert associated with the crossing of the Olympic Pipeline Co.'s petroleum pipelines(proposed activity No. 1) would extend about 3 feet waterward of the OHWM at its inlet. b. waterward of MHWL in tidal waters? No. 9 (3) Remove accumulated herbaceous and shrub vegetation along 1,180 linear feet of the SW 23rd Street channel from East Valley Road to Lind Avenue. Vegetation will be cleared along the south bank of the channel and within the channel. Vegetation will be cleared by mowing and scraping and would not affect the topography of the wetland. Although the removal of vegetation would result in the loss of some wildlife habitat, the amount lost is incremental relative to the amount of surrounding scrub-shrub habitat in wetlands W-8N,W-7S, and W-10N. Fish passage in the channel will be improved and this reach will be restored as off-channel habitat for Springbrook Creek after the Olympic Pipeline culvert is replaced (see Element 1). Emergent vegetation to be removed from the channel include common cattail(Typha latifolia), American brooklime(Veronica americana), reed canarygrass, and yellow flag (Iris pseudacorus). (4) Install a new 24-inch culvert parallel to and east of Lind Avenue to connect a small channel north of the SW 23rd Street access road to the SW 23rd Street channel, south of the access road to restore drainage system function. Impacts associated with installation of the new culvert would occur from placement of the culvert's outlet into the SW 23rd Street channel. Approximately 100 square feet of wetland W-8N would be disturbed where the culvert daylights into the wetland's channel bank; approximately 100 square feet of wetland W-7S would be temporarily disturbed by construction activities to install the culvert at the inlet. Restoring the drainage system function would return the hydrology in the channel on the north side of the private access road and wetland W-7S to conditions that existed before the existing culvert was plugged. Re-establishing the drainage from wetland W-7S to wetland W-8N could result in the potential loss of approximately 0.5 acre of wetland hydrology in the 1.75 acre wetland W-7S. Lowering of surface water elevations in the channel portion of the wetland could reduce the amount of surface water or saturation in the outer perimeter of the wetland. The wetland area directly affected from installation of the culvert would be in the rock-lined- north bank of the channel and would not result in significant impacts to the wetland as no wetland vegetation would be removed. The culvert would be installed during the dry season to further reduce potential impacts to water quality. If surface water is present in the channel north of SW 23rd Street occurs during construction, a temporary barrier would be placed to prevent surface flow from the channel to the construction area. Surface flow could then be rerouted downstream of the project area using a bypass pump system. The system of sedimentation fences and strawbales discussed under element No. 1 would be in place to reduce sedimentation impacts to the water in the channel. Any wetland area temporarily disturbed from construction activities would be revegetated with shrubs common to the area. Placement of the new culvert would restore the drainage system north of the SW 23rd Street access road. Late spring surface water elevations in the channel within wetland W-7S could be reduced approximately 1.2 feet. (This is based on the difference of existing surface water 8 Downstream water quality would be protected during construction by placement of sedimentation fences and rerouting surface flows back into the channel downstream of the construction area via a bypass pipe. A series of straw bales would be placed in the channel to contain sediment from the water in the bypass pipe. The bales would be removed after all construction is complete. Sediment would be removed if large enough quantities accumulated behind the bales. Temporary dewatering of the culvert construction area to allow for construction of the box culvert and other project elements could result in pumping of turbid water through the bypass system and into the SW 23rd Street channel. The straw bales in the channel would trap any sediment before reaching Springbrook Creek. Existing water elevations in Wetland W-8N during storm events are caused by the undersized culverts under the Olympic Pipeline crossing. Hydraulic modeling of surface water elevations within the SW 23rd Street channel indicate that the surface water elevations for a 2 year storm would be reduced by 2 feet by the culvert replacement. This is not expected to impact wetland acreage associated with wetland W-8N because (1) surface water connections between the channel and wetland W-8N would still occur and surface water would continue to inundate wetland W-8N, (2) base flow within the channel is not expected to change, and (3)two-year storm overflows into the wetland are relatively short in duration (less than one day) according to hydrologic/hydraulic simulation. The decrease in the maximum water levels during storm events is not expected to significantly change the wetland vegetation. Some herbaceous species may decrease (e.g., cattail and yellow flag)whereas other species may increase(e.g., sedges and rushes). Willow and spirea are species adapted to water level fluctuations and are expected to continue to dominate the wetland. (2) Remove the abandoned beaver dam at the mouth of the SW 23rd Street channel as it enters Springbrook Creek west of Lind Avenue and south of the SW 23rd Street access road and selectively remove debris and vegetation between Springbrook Creek and Lind Avenue. Removal of the small beaver dam which has deteriorated to a loose assemblage of sticks will not require any removal of wetland vegetation. No impacts on the channel or associated wetland are expected to occur. The beaver dam can be removed with hand held tools and equipment to avoid the disturbance of surrounding vegetation. Because the dam is loosely held together, base flow within the channel is not expected to change significantly to affect the surrounding wetland. High groundwater and surface flows associated with winter and spring storm events will continue to supply a source of water to support the scrub-shrub and forested wetland W-ION. Removal of debris and vegetation along the channel between Springbrook Creek and Lind Avenue would be done by selectively cutting lower growing vegetation hanging into the channel that obstructs flow. This activity would not directly impact the wetland or channel because only above ground material would be removed. The ground surface and soils would not be disturbed by the activity. Overhanging canopy from larger willows that does not obstruct channel flows would not be removed to maintain a shaded canopy over the channel. 7 • temporary disturbance from the construction related activities to place the new culverts would be approximately 250 square feet(temporary disturbance occurs primarily on rock- lined banks and unvegetated channel bottoms); and • temporary disturbance from the removal of accumulated sediment at the inlet and outlet of the twin culverts would be 1,400 square feet (to a depth of approximately 2.5 feet would equal 130 cubic yards). The total impacts on wetlands from improvements to the culvert drainage system would be approximately 1,950 square feet (0.04 acre). In addition, vegetation maintenance along the SW 23rd Street channel would temporarily remove approximately 8,000 square feet of young shrub and herbaceous plants from the channel banks and bottom. Specific impacts from each of the five project elements are discussed below. Mitigation measures taken to reduce impacts are presented in the attached wetland report prepared for this application. (1) Replace the existing 18 inch culverts under the Olympic Pipeline crossing of the SW 23rd Street channel with a new pre-cast concrete box culvert . Impacts from the culvert replacement will occur from the construction of the box culvert's inlet structure within a small portion of the wetland and from construction of the channel connecting the new box culvert to the existing SW 23rd Street channel (see Figure 4). Temporary construction impacts and the installation of the new box culvert are.expected to be limited to a cumulative area of approximately 350 square feet of wetland. Downstream sedimentation issues will be minimized by routing any channel flow that may occur during construction in a bypass pipe. The area where work will occur will be protected from the rest of the channel by sedimentation fences. Work would be scheduled to occur outside of the wet season during low flows. Wetland area that will be impacted is primarily rock lined slopes where the new box culvert's inlet and outlet occur. At the outlet, scrub-shrub vegetation(willow and red-osier dogwood) is growing at and above the wetland boundary(approximately the ordinary high water line). Several willow and/or red-osier dogwood plants would likely be removed for placement of the new box culvert. The new channel slopes that are to be constructed connecting the box culvert to the existing SW 23rd street channel would be revegetated with native low growing shrubs to compensate for the vegetation removed to construct the channel. Approximately 200 square feet of wetland and channel bottom would be created from construction of the new channel. No impacts to fish are expected to occur. Fish have not been observed in the channel and current use would be limited by the downstream beaver dam. The proposed project replaces culverts that are a barrier to fish with a fish passable culvert. 6 (4) Install a new 24-inch culvert parallel to and east of Lind Avenue to connect a small channel north of the SW 23rd Street access road to the SW 23rd Street channel, south of the access road to restore drainage system function. Because of the existing non-functioning 30-inch culvert that crosses Lind Avenue north of the SW 23rd Street channel, a new culvert would be installed to route flow from the small channel located north of SW 23rd Street and east of Lind Avenue to the SW 23rd Street channel. Development of the property north of the channel and west of Lind Avenue plugged the existing culvert approximately 10 years ago. Because this channel currently has no drainage outlet along Lind Avenue or SW 23rd Street, surface water no longer drains but collects in the channel and has created wetland conditions and flooding problems on the property north of SW 23rd Street and east of Lind Avenue. Installation of a new culvert would maintain the drainage system that was in place before the culvert was plugged. The new culvert would be a 24-inch diameter culvert with the inlet located just east of the existing 30-inch non-functioning culvert's inlet. The invert elevation of the north end of the new culvert, 12.0 feet (NAVD), is equal to the existing non-functioning culvert. The invert elevation of the south end of the new culvert would be 8.2 feet (NAVD), which is approximately 1.7 feet higher than the invert elevation of the existing 9-foot by 14-foot culverts under Lind Avenue south of SW 23rd Street. Riprap would be placed at the culvert's outlet to dissipate stormwater runoff entering into the SW 23rd Street channel. See Figures 6 and 7 for the plan and profile alignment design of the new culvert. (5) Remove sediment from the twin 9-foot by 14-foot culverts under Lind Avenue at SW 23rd Street and immediately upstream and downstream of the culvert openings. This activity is part of the periodic maintenance required to maintain the positive drainage along this portion of the SW 23rd Street channel. Approximately 2 to 3 feet of sediment has accumulated in the SW 23rd Street channel and at both openings of the twin culverts. A backhoe and/or vacuum truck positioned on the SW 23rd Street access road would remove this sediment to the invert elevation of the culverts. The sediment removal would occur within approximately 20 feet of the culvert opening on the east side of Lind Avenue, and within the pool area on the west side of Lind Avenue. Sediment would be disposed on an upland site. (Sediment within the culverts would be removed using a combination of human assisted shoveling and a vacuum device to bring the sediment to a truck/storage container on the access road.) Impacts on Project Elements 1-5: Cumulative impacts on wetlands from the proposed flood control maintenance activities are as follows: • permanent fill from placement of the new culverts or riprap at the outlets of the culverts would be approximately 300 square feet (the majority of the riprap fill would occur in areas where rock-lined channel banks or unvegetated channel bottoms exist); 5 The abandoned beaver dam would be removed to reduce debris accumulation and upstream sedimentation problems, reduce flood impacts, improve the potential passage of fish from Springbrook Creek into the SW 23rd Street Channel, and provide habitat during high Springbrook Creek flows. See Figure 3 for the location of the abandoned beaver dam. The beaver dam is approximately 6 feet wide and 16" inches high within the ordinary high water mark of the channel and consists of small, loose mix of willow twigs. Debris and shrub vegetation within and four feet above the level of the ordinary high water mark in the ditch between Springbrook Creek and Lind Avenue would be selectively removed. Hand held equipment would be used to cut vegetation above ground to avoid disturbance to the ground surface and minimize impacts to the overhanging shrub canopy outside of the clearing limits. Overhanging canopy from larger willows that does not obstruct channel flow would not be removed to maintain a shaded canopy over the channel. (3) Remove accumulated herbaceous and shrub vegetation along 1,180 linear feet of the SW 23rd Street channel from East Valley Road to Lind Avenue. Removal of the vegetation is a periodic maintenance activity that would be done to restore a defined flow channel and help maintain positive drainage. Approximately 8,000 square feet of vegetation within the wetland (channel and the channel's north bank) would be removed. Young shrub vegetation would be removed in the upland area and a narrow strip of wetland along the channel's north bank; emergent vegetation would be removed within the wetland in the channel. The existing SW 23rd Street channel along this reach is a V-shaped channel and varies in width from 10 to 25 feet at the elevation of the adjacent wetland area. Its depth below the ground surface of the wetland to the south, varies from approximately 2 to 5 feet. The surface of the adjacent private road is approximately 7 to 12 feet higher in elevation than the bottom of the channel. Vegetation removal along the south bank would be cut just above the ground surface. Reed canarygrass(Phalaris arundinacea), black cottonwood (Populus trichocarpa) saplings, and Himalayan blackberry (Rubus discolor) would be the dominant vegetation to be removed. Other wetland shrubs such as Douglas' spirea (Spiraea douglasii), red-osier dogwood (Corpus stolonifera), and willow (Salix sp.) would also be cut. Vegetation would be cut from the edge of the SW 23rd Street road surface, the upland portion of the banks, to the water surface. Because of the steep north channel bank (2:1), a narrow strip of shrub vegetation within the wetland area on the north channel bank would be cut (approximately 2 feet wide). In addition, in those areas where emergent vegetation is growing in the channel, the above ground portion of the vegetation would be removed by scraping the vegetation at the ground surface from the channel with a backhoe. No widening or deepening of the channel or soil disturbance is intended from this maintenance activity. The backhoe would operate from the SW 23rd Street access road. 4 Purpose: The objectives of the proposed project are to: • restore drainage to the channel north of SW 23rd Street and correct flooding of the property north of the SW 23rd Street access road and east of Lind Avenue; • improve surface water conveyance from the SW 23rd Street channel into Springbrook Creek; • reduce maintenance problems associated with the undersized culvert under the Olympic Pipeline Crossing and increasing the flood protection to Lind Avenue, East Valley Road, and other tributary areas; • improve the potential for fish passage from Springbrook Creek to the SW 23rd Street channel, add habitat for fish that is currently not accessible, and provide off-channel habitat during high Springbrook Creek flows.. Proposed Activity: The proposed activity consists of the 5 elements described below. The project would occur in existing channels along SW 23rd Street near Lind Avenue (see Figure 3). (1) Replace the existing 18 inch culverts under the Olympic Pipeline crossing of the SW 23rd Street channel with a new, large pre-cast concrete box culvert. The Olympic Pipeline Company petroleum product lines are located west of Lind Avenue. The pipelines are located in an upland berm separating the pool at the downstream outlet of the twin 9- by 14-foot culverts from the SW 23rd Street Channel. The existing 18 inch culverts connecting these two wetland areas are currently undersized and cause high upstream water surface elevations, contributing to the flooding problems along East Valley Road. The culverts are also subject to frequent plugging, allowing sedimentation and vegetation debris to fill in and choke the upstream channel. The inside dimensions of the new box culvert will be 10 feet wide, 4 feet high and 80 feet long. The new box culvert is designed for the pipelines to remain in their existing location (see Figures 4 and 5). Invert elevation of the box culvert inlet would be 6.6 feet (NAVD)to tie into the existing SW 23rd Street channel; invert elevation of the outlet would be 6.5 feet (NAVD). A channel approximately 10 feet long with 1.5:1 side slopes would be excavated in the upland area to connect the box culvert outlet with the existing SW 23rd Street channel. The inlet and outlet of the box culvert would be rock-lined to maintain the structural integrity of the culvert to channel connection. The remaining portions of the 1.5:1 side slopes of the channel would be revegetated with native low growing wetland shrubs. (2) Remove the abandoned beaver dam at the mouth of the SW 23rd Street channel as it enters Springbrook Creek west of Lind Avenue and south of the SW 23rd Street access road and selectively remove debris and vegetation between Springbrook Creek and Lind Avenue. 3 111 3023059007 -City of Renton 2193100010-Puget Western Section No: NW 1/4, S30, T23N, R5E and SW 1/4, S19, T23N, R5E Figure 1 shows the general location of the project. 7. Describe current use of the property, including structures: The primary land use within the project site is urban. Parcels surrounding the project site where the work will occur are developed as businesses or undeveloped pads. Wetland areas are present in many portions of the parcels that have not been filled (see Figure 2). Lind Avenue is a paved, public road. SW 23rd Street is a paved private access road (east of Lind Avenue)owned by Olympic Pipeline Company and a gated gravel access road owned by the City of Seattle west of Lind Avenue. The SW 23rd Street channel is located south of SW 23rd Street and flows east to west. It crosses under Lind Avenue in twin 9- by 14-foot corrugated metal pipe culverts and discharges into Springbr:Qok Creek approximately 950 feet west of Lind Avenue. Petroleum pipelines owned by Olympic Pipeline Company cross the SW 23rd Street channel west of Lind Avenue in a north to south direction and are enclosed in an earthen berm. Undersized 18-inch culverts currently connect the SW 23rd Street channel at this pipeline crossing and are subject to frequent plugging with debris and sediment. A separate, smaller channel is located north of the private access roads in SW 23rd Street with an east to west direction. A 30-inch culvert crossing formerly conveyed flows under Lind Avenue to the west;however, the culvert was inadvertently plugged and the ditch west of Lind Avenue was filled in the mid 1980's from the development of the parcel west of Lind Avenue and north of SW 23rd Street. Water in the channel north of SW 23rd Street and east of Lind Avenue no longer has an outlet because of the plugged condition of the culvert under Lind Avenue. Lack of a defined ditch west of Lind Avenue and the steep fill slope from the adjacent parking lot prevent restoring the former drainage system. Is the property in agricultural land? No. 8. Proposed Activity: Include expected water quality and fish impacts, and proposed actions to reduce the duration and severity of those impacts and provide proper protection for fish life. 2 • JARPA APPLICATION-CITY OF RENTON: SW 23RD STREET DRAINAGE IMPROVEMENTS December 15, 1997 SECTION A 1. Applicant: City of Renton Scott Woodbury, Project Manager Surface Water Utility 200 Mill Avenue South Renton, WA 98055 Phone: 425-277-5547 Fax: 425-235-2541 2. Agent: 3. Designation of Authorized Agent: 4. Relationship of Applicant to Property: The project site occurs within the City of Renton. Property owners are listed in No. 6 below. 5. Property Owners, if other than applicant: See No. 6 below. 6. Location of Proposed Activity: Waterbody: Constructed channel (referred to as SW 23rd Street channel in this application) DNR Stream Type: Type 4 VW SI) Tributary of: Springbrook Creek (WRIA 09-0005) g .c Legal Description: 1998 Tax Parcel No: 3023059083 and 3023059084-Olympic Pipeline Co. 3023059066 - City of Seattle ur�^ to v 004° 3340400285 - Martin Seelig o J�or/of R 1 • • DO NOT SEND FEDERAL PROCESSING FEE WITH APPLICATION TO BE COMPLETED BY LOCAL OFFICIAL A. Nature of the existing shoreline. (Describe type of shoreline, such as marine, stream, lake, lagoon, marsh, bog, swamp, flood plain, floodway, delta; type of beach, such as accretion, erosion, high bank, low bank, or dike; material such as sand, gravel, mud, clay, rock, riprap; and extent and type of bulkheading, if any:) S�Q ��qRS / .Aa Gifjn��itA / uit 4 J,,es Sdoke' �4t O . /S197. I � B. In the event that any of the proposed buildings or structures will exceed a height of thirty-five feet above the average grade level, indicate the approximate location of and number of residential units, existing and potential, that will have an obstructed view: C. If the application involves a conditional use or variance, set forth in full that portion of the master program which provides that the proposed use may be a conditional use, or, in the case of a variance, from which the variance is being sought: These Agencies are Equal Opportunity and Affirmative Action employers. For special accommodation needs, please contact the appropriate agency from Appendix A. • • • 16. Has any agency denied approval for the activity described herein or for any activity directly related to the activity described herein?0 Yes 0 No If yes, explain: SECTION B - Use for Shoreline&Corps of Engineers permits only:See a,S{.tct! SivedS 1'or block-S 1)-I1 17. Total cost of Project. This means the fair market value of the project, including materials, labor, machine rentals, etc. 18. Local government w/jurisdiction: Shoreline Environment designation: Zoning designation: 19. For corps permits, provide names, addresses, and telephone numbers of adjoining property owners, lessees, etc., • PLEASE NOTE:Shoreline management compliance may require additional notice—consult your local government. SECTION C - Complete for any permit covered by this application • 20. Application is hereby made for a permit or permits to authorize the activities described herein. I certify that I am familiar with the information contained in this application, and that to the best of my knowledge and belief, such information is true, complete, and accurate. I further certify that I possess the authority to undertake the proposed activities. I hereby grant to the agencies to which this application is made, the right to enter the above-described location to inspect the proposed or completed work. Vt 14. , /2 0 iq� Signature of Applicant or Authori.'d Agent(REQUIRED) Date -i�owner yc,l all i;gf,G� 4/� cM.,,.••� i� dorw. of e4Serq..t`S ri hF�( ti•,sl Signature of Landowner (REQUIRED if othe/than applicant) Date v <nf-e.l foe / G4 it P ,n a4 its a? This application must be signed by the applicant. If an authorized agent is to be designated, the applicant must also sign at Item 1/3. 18 U.S.0 §1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of the United States knowingly falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious, or fraudulent statements or representations or makes or uses any false writing or document knowing same to contain any false, fictitious, or fraudulent statement or entry. shall be fined not more than SI0.000 or imprisoned not more than 5 years or both. 9. Proposed Starting Date: Estimated duration of activity: Will the project be constructed in stages? 0 Yes 0 No 10. Will any structures be placed: a. waterward of the Ordinary High Water Mark or Line for fresh or tidal waters?❑ Yes❑ No b. waterward of Mean High Water Line in tidal waters? 0 Yes 0 No 11. Will fill material (rock, fill, bulkhead, pilings or other material)be placed waterward of Ordinary High Water Mark or Line for fresh or tidal waters? ❑ Yes 0 No a. If"yes," in fresh water indicate volume in cubic yards: b. If"yes," in tidal waters, indicate volume in cubic yards waterward of the line of mean higher high water: 12. Will material be placed in wetlands? ❑ Yes 0 No If yes, impacted area: (acres) If yes: a. Has a delineation been completed? 0 Yes 0 No (If yes, please submit with application.) b. Type and composition of fill material (e.g., sand, etc.): c. Material source: d. List all soil series (type of soil)located at the project site, &indicate if they are on the county's list of hydric soils: Soils information can be obtained from the Natural Resources Conservation Service(NRCS), formerly Soil Conservation Service (SCS). 13. Will proposed activity cause flooding or draining of 0 Yes 0 No If yes, impacted area: (acres) wetlands? 14. Will excavation or dredging be required in water or wetlands? 0 Yes 0 No If yes, volume: (cubic yards) a Composition of material removed: b. Disposal site for excavated material: c. Method of dredging: 15. List other applications, approvals, or certifications from other Federal, state or local agencies for any structures, construction, discharges, or other activities described in the application(i.e., preliminary plat approval, health district approval, building permit, SEPA review, FERC license, Forest Practices Application, etc.) Also indicate whether work has been completed and indicate all existing work on drawings. Date of Date Completed? Type of Approval Issuing Agency Identification No. Application Approved Yes or No SEPA Lead Agency. SEPA Decision Date: . 6. Location where proposed activity exists or will occur: Watcrbody DNR Stream Type (if known) Street P ddress Tributary of Legal Description: City, County, State, Zip Code Tax Parcel No.: L L' Section Township Range 7. Describe the current use of the property, and structures existing on the property. If any portion of the proposed activity is already completed on this property, indicate month and year of completion. Is the prc perry agricultural land? 0 Yes 0 No Are you a USDA program participant? 0 Yes 0 No 8. Describe the proposed activity, and the activity's purpose. Include expected water quality and fish impacts, and proposed actions to reduce the duration and severity of those impacts and provide proper protection for fish life. Complete plans and specifications should be provided for all work waterward of the Ordinary High Water Mark or Line, including types of equipment to be used, and for all work if applying for a shoreline permit. If additional space is needed, please attach a separate sheet. Preparation of drawings: See Appendix A - sample drawings and checklist for completing the drawings. One set of original or good quality reproducible drawings must be attached. NOTE: Applicants arc encouraged to submit photograph; of the project site, but these do not substitute for drawings. THE CORPS OF ENGINEERS REQUIRES DRAWINGS ON 8-1/2 X I I INCH SHEETS. Larger drawings may be required by other agencies. AGENCY USE ONLY Agency Reference II: Date Received: SEPA Lead Agency: Other: ;,1,; — JARPA APPLICATION FORM — - for use in Washington State- ;J. !►.1 PLEASE TYPE OR PRINT IN BLUE OR BLACK INK Based on the preceding checklist, I am sending copies of this application to the following: (check all that apply) Local Government: for shoreline 0 Substantial Development 0 Conditional Use 0 Variance 0 Exemption; or 0 Floodplain Management 0 Critical Areas Ordinance ✓Washington Department of Fish and Wildlife for HPA Washington Department of Ecology Approval to Allow Temporary Exceedance of Water Quality Standards 401 Water Quality Certification Nationwide Permits ✓Corps Engineers for Section 404 or Section 10 permit(s) SECTION A- Use for all permits covered by this application. Be sure to also complete.Section C(Signature Block) for all permit applications. q#4deal SkeettS tar b loots 2-Ib of Se-c4iof. A 1. Applicant City of Renton, Surface Water Utility (Scott Woodbury, Project Manager) Mailing Address 200 Mill Avenue South Renton, WA 98055 Work Phone: (425) 277-5547 Home Phone: ( ) Fax Number: (425) 235-2541 If an agent is acting for the applicant during the permit process, complete#2&3. 2. Authorized Agent Mailing Address Work Phone: ( ) Home Phone: ( ) Fax Number: ( ) 3. Designation of Authorized Agent, if applicable: I hereby designate to act as my agent in matters related to this application for permit(s). I understand that if a Federal permit is issued, I must sign the permit. Signature of Applicant Date 4. Relationship of applicant to property: 0 Owner 0 Purchaser 0 Lessee ❑ Other ( crik ) 5. Name, address, and phone number of property owner(s), if other than applicant: I poo'G peVEG OF4R iGN • SOILS Map Unit Name (Series and Phase): U e641•1 Drainage Class: Reid Observations Taxonomy (Subgroup): Confirm Mapped Type? Yes No Profit.. Description: Dept) Matrix Color Mottle Colors Monte. Texture, Concretions, (inches) Hcrizon (Munsell Moist) (Munsell Moist) Abundance/Co.:trast Structure, etc. Hydr:c Soil Indicators: _Histosol _Concretions _Histic Epipedon _High Organic Content in Surface Layer in Sandy Soils _Sulfidic Odor _Organic Streaking in Sandy Soils • _Aquic Moisture Regime _Listed on Local Hydric Soils List _Reducing Conditions _Listed on National Hydric Soils List t. Cloyed or Low-Chrome Colors - _Other(Explain in Remarks) Remarks: WETLAND DETERMINATION Hyd ophytic Vegetation Present? No (Circle) (Circle) Wetland Hydrology Present? Yes @,{fe Hyd is Soils Present? Yes C�) Is this Sampling Point Within a Wetland? Yes Remarks: 7/10 itA4G-4,4/5 Jert/e,i' 1,4)4 4,4_04 r l(oat( • �7/L..t CT / j Z� . , Approved by Hell AC 3/92 DATA FORM • ROUTINE WETLAND DEIhRMlNATION (1987 COE Wetlands Delineation Manual) Project/Site: 5(A/ 2 '5" ST - Lino /QVa. Cun..vZnT ' ' 4+c'T Date: 5 ,Z -?7 Applicant/Owner: C 1 it of ge K f ov, �v o Uc ti)0eiG Z) ,'e County: /c/4-e Investigator: M • t-(t,ff-ku'c3 State: LVeg Do Normal Circumstances exist on the site? erdEr No Community ID: Gt} -/D/s/ Is the site significantly disturbed (Atypical Situation)? Yes rN Transect ID: Is the area a potential Problem Area? Yes Plot ID: �f (If needed, explain on reverse.) • -rf VEGETATION ' Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1. �4l G,(0).0 aAttntx.iteutt id 9. 10. 3. • 11. 4. • 12. S. 13. 6. 14. 7. 1S. E. 16. - Percent of Dominant Species that are OBL.FACW or FAC (excluding FAC-). Remarks: Gr/ -y9 dlA hke / i> n.G p �a ewes l HYDROLOGY _Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: Stream. Lake. or Tide Gauge Primary Indicators: _Aerial Photographs _Inundated _Other _Saturated in Upper 12 Inches No Recorded Data Available Water Marks Drift Lines _Sediment Deposits Field Observations: _Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: (in.) Oxidized Root Channels in Upper 12 Inches Water-Stained Leaves Depth to Free Water in Pit: (in.) _Local Soil Survey Date _FAC-Neutral Test Depth to Saturated Soil: (in.) _Other (Explain in Remarks) Remarks: vo 42I); 14 D �Fi�(OL�T�f 0v �/ ��" Fe/6 `/ SOZ•.. 2-4-� - /� j J is) o S ik 11,4_ SOILS Map I init Name U C' (Serie s and Phase): I S4[`r Drainage Class: Feld Observations Taxonomy(Subgroup): _ Corfirn Mapped Type? Yes No Profit,' Descriotion: Deptt. Matrix Color Mottle Colors Mot- a Texture, Concretions, (inch s) Hcrizon (Munsell Moist) (Munsell Moist) Abundance/Co-;trast Structure, etc. • Hydric Soil Indicators: _Histosol _Concretions _Histic Epipedon _High Organic Content in Surface Layer in Sandy Soils Sulfidic Odor Organic Streaking in Sandy Soils Aquic Moisture Regime _Listed on Local Hydric Soils list Reducing Conditions _Listed on National Hydric Soils List t Cloyed or Low-Chrome Colors - _Other(Explain in Remarks) Remarks: L Q_ mz-CC d D / - ),UGi 9/1-11 ..-.c 14ti f/ YLti _ c vhvt, ( )ov^- WETLAND DETERMINATION Hydrophytic Vegetation Present? o (Circle) (Circle) Wetland Hydrology Present? Yes Hydric Soils Present? Yes Is this Sampling Point Within a Wetland? Yes Ron erica: _ B �1 /� /0) • Yj�- /►�-c c I U�fe v0a 501 44,-eo3 • Approved by HQUSACE 3/92 DATA FORM ROUTINE WETLYAND DE)LRM1NATION . (1987 COE Wetlands Delineation Manual) Project/Site: 5IA/ z 5T - LIND AVE.. CvcvataT kk7at,4c T Date: ,J 23 -9 7 Applicant/Owner: G r.1r o f Re tti f o , f u eo l rc. �j)or(Ct )p't County: /S'/N6 Investigator: /K c3 State: Gv,‘) Do Normal Circumstances exist on the site? (Yea. No Community ID: (NEON Is the site significantly disturbed (Atypical Situation)? Yes &Ito Transect ID: Is the area a potential Problem Area? Yes l9 Plot ID: 3 (If needed, explain on reverse.) -tr VEGETATION • Dominant Plant Specks Stratum Indicator - Dominant Plant Species Stratum Indicator 1. fkA11 ) aVU14-,tr„4LOIR t71-- r -(4) 9. 2. f{-Lrt FAG lo. 4• 12. S. 13. 6. 14. 7. 15. B. 16. Percent of Dominant Species that are OBL, FACW or FAC raj (excluding FAC-). / �/ Remarks: ,// �.!,_f� G Gam►' rwvwAf? dN ,t, ..,r( V.y�441, f,J/,'w v� T� HYDROLOGY Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: Stream. Lake. or Tide Gauge Primary Indicators: —Aerial Photographs _Inundated _Other _Saturated in Upper 12 Inches _No Recorded Data Available _Water Marks Drift Lines Sediment Deposits Field Observations: Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: (in.) _Oxidized Root Channels in Upper 12 Inches _Water-Stained Leaves Depth to Free Water in Pit: — (in.) Local Soil Survey Data FAC-Neutral Test Depth to Saturated Soil: (in.) _Other (Explain in Remarks) Remarks: N v e v%QI--e/kNa pd� L /�(o t '- f c,,, 6 !cam"u v�vt. 'T / 1�1�v1� s/ (N Eil � (,J_/ON • • SOILS Map )'nit Name U j (Serie ; and Phase): RSRL`r Drainage Class: vI iX e Feld Observations Taxor omy(Subgroup): Confirm Mapped Type? No Profile Descriotion: Depth Matrix Color Mottle Colors Mon Texture, Concretions, linche sl Horizon (Munsell Moist) (Munsell Moist) Abundance/Co.:trast Structure, etc. /2t/ / 72- Y Hydri=Soil Indicators: Histosol _Concretions Histic Epipedon _High Organic Content in Surface Layer in Sandy Soils Sulfidic Odor _Organic Streaking in Sandy Soils _Aquic Moisture Regime _Listed on Local Hydric Soils List Reducing Conditions _Listed on National Hydric Soils List Gleyed or Low-Chrome Colors - Other(Explain in Remarks) Rem sr(s: 71.0 n/t."6(, ")6't'j/ it/yoe---k jta d t f c r✓el l-" (10. • WETLAND DETERMINATION Hydiophytic Vegetation Present? No (Circle) (Circle) Wet and Hydrology Present? Yes dsia Hydric Soils Present? Yes dSi;) Is this Sampling Point Within a Wetland? Yes ORii> Rem erke: Approved by H•USAC 3/92 DATA FORM • ROUTINE WETLAND DE)ERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: 5IA/ 2 3 5" ST — G/n1D AvF.. an-vtnT i2FPcr}c'T Date: ,j 2?' -9 7 Applicant/Owner: C�7 ' p1 RCeµf-nv, iUo1/c. ‘12011K1 ,ber't County: k- x)e- Investigator: M /-(a. iW.jci State: G</A Do Normal Circumstances exist on the site? CrdEr No Community ID: fJ} /oN Is the site significantly disturbed (Atypical Situation)? Yes cflb Transect ID: Is the area a potential Problem Area? Yes Plot ID: �- (If needed, explain on reverse.) C VEGETATION ' • Dominant Plant Species Stratum Indicator - Dominant Plant Species Stratum Indicator 1. D k elf k..A/ a/u nd-1,41L(C fit& 9. T 2. Ur/'c6i dio'cam f' F - 10. • 3. 11. 4 12. S. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species that are OBL, FACW or FAC , (excluding FAC-). / ( 7' . Remarks: / t ) WI'e k tat a/1--e-GL _ /C _ / CZ—a c� � f �, � /)rDaa� jie 'r Gc Jac/. HYDROLOGY Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: _Stream, Lake, or Tide Gauge Primary Indicators: _Aerial Photographs Inundated _Other Saturated in Upper 12 Inches No Recorded Data Available _Water Marks Drift Lines _Sediment Deposits Reid Observations: _Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: - (in.) Oxidized Root Channels in Upper 12 Inches Water-Stained Leaves Depth to Free Water in Pit: (in.) _Local Soil Survey Data _FAC-Neutral Test Depth to Saturated Soil: (in.) _Other (Explain in Remarks) Remarks: 6\t' �� / / LJ CJL �a� {lOd•L•� dGG(ilL�t t � ��, -4 l� Aoe -eu om : �1:71 v�.i {v��r� �zv,�- �ou�ai (7of 7e, I °cie JL d w e-c w.w<r p o 1; J �rtn S • SOILS Map Unit Name (Series and Phase): U R 6414 Drainage Class: Yvv o, -pv,5sr- Reld Observations Taxonomy (Subgroup): Confirm Mapped Type? 3Ep No Profit,-Descriotion: Depth Matrix Color Mottle Colors Mot Texture, Concretions, (inches) Hcrizon (Munsell Moist) (Munsell Moistl Abundance/Co-arrest Structure, etc. e I O« l d Y2 /D a P6 c o.u<.u.AA_ Hydri c Soil Indicators: Histosol Concretions Histic Epipedon - _High Organic Content in Surface Layer in Sandy Soils _Sulfidic Odor _Organic Streaking in Sandy Soils - _Aquic Moisture Regime _Listed on Local Hydric Soils List .0 Reducing Conditions _Listed on National Hydric Soils List ` t Gleyed or Low-Chroma Colors- —Other(Explain in Remarks) /n G l " t� Rem /), x ,ti �pN rl r1� / Gf�� Lbe- a/16.111 . 4-0-1/ cie✓1cv716"- nod �'GL WETL.AND DETERMINATION Hydrophytic Vegetation Present? L�q No (Circle) (Circle) Wetland Hydrology Present? Q No Hydric Soils Present? No Is this Sampling Point Within a Wetland? K No Remarks: O j r_4(tie 1 1M(iG'C F/ I o G je r v l�L v_c; so, Flo Approved by HOU AC 3/92 DATA FORM ROUTINE WETLAND DE)ERMlNATlON • (1987 COE Wetlands Delineation Manual) Project/Site: 5 U/ z 3 ST — GINo Av5. vorr Rk'P1Rc'T Date: ,� 23 -?7 Applicant/Owner: Clir of geµfer Ai/0 c (1)or(cl Z) '>` County: /c/x/6- Investigator: State: G<Y) Do Normal Circumstances exist on the site? No Community ID: W /Dti/ Is the site significantly disturbed (Atypical Situation)? Yes cflt. Transect ID: Is the area a potential Problem Area? Yes ct29 Plot ID: (If needed, explain on reverse.) 1 l uJL) VEGETATION ' Dominant Plant Species Stratum Indicator r - Dominant Plant Species Stratum Indicator 1. COrn,.S sTo/C11; 'fe r.t_ ...S. f A l�l s. . T 2. 04,14 ris a PrIfG(A 1o. ." 3. tlrf dis;La_ FffG t- 11. 4 12 5. 13. 6. 14. • 7. 15. 8. 16. Percent of Dominant Species that are OBL.FACW or FAC (excluding FAC-). . "a D 1/0 . Remarks: fSs pOl /)o.A Gj' &4&'w sot e'-6 • HYDROLOGY Recorded Date (Describe in Remarks): Wetland Hydrology Indicators: _Stream. Lake, or Tide Gauge Primary Indicators: Aerial Photographs _Inundated Other Saturated in Upper 12 Inches No Recorded Data Available Water Marks Drift Lines _Sediment Deposits Field Observations: _Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: — (in.) _Oxidized Root Channels in Upper 12 Inches X Water-Stained Leaves Depth to Free Water in Pit: (in.) _Local Soil Survey Data FAC-Neutral Test Depth to Saturated Soil: J (in.) ZE Other (Explain in Remarks) Remarks: 5,7e it Oti y(� �`� �'L�w��c �/1I1 �^u Awvte�^t Z $ �+�n•tG/ _"yo /pw; 3�i SeR,Oor {Li � 0✓ ,r, 44 0- v :1u R -w--ee t. I`t't µr,..,c SO if IJ V/wy (a MOtt SOILS Map .Jnit Name (Series and Phase): U RBAL`e/ Drainage Class: pCot� Reld Observations -�\ Taxo wmy(Subgroup): Confirm Mapped Type? No Profile Descriotion: Deptli Matrix Color Mottle Colors Monte. Texture, Concretions, (inch9s) Hcrizon (Munsell Moist) SMunsell Moist) Abundance/Co-mast Structure, etc. it Hydr c Soil Indicators: Histosol _Concretions Histic Epipedon • _High Organic Content in Surface Layer in Sandy Soils Sulfidic Odor _Organic Streaking in Sandy Soils Aquic Moisture Regime _Listed on Local Hydric Soils List Reducing Conditions _Listed on National Hydric Soils List Gloyed or Low-Chroma Colors - _Other(Explain in Remarks) Remarks: 4,1424C / y�� ,lA CY — • WETLAND DETERMINATION HydrDphytic Vegetation Present? No (Circle) (Circle) Wetland Hydrology Present? No Hydr c Soils Present? No Is this Sampling Point Within a Wetland? No Remarks: cifec /f ! 7►�/�� £ 441.4 4, i I. f1 p V t iv(44) 4/et-6- .t' GJ -�2 !J r 7v �° Approved by H•U AC 3/92 DATA FORM • ROUTINE WETLAND DETERMINATION • . (1987 COE Wetlands Delineation Manual) Project/Site: 5W 23 ST G/ND Av5. an.vtrzT 12I1-,4c'T Date: ,j 23 -97 Applicant/Owner: C�71 p-f Re Kier. f U 6tic. (D.:4(a Z)p'€ County: /c,'A)e- Investigator: State: Z41,4? Do Normal Circumstances exist on the site? No Community ID: U'8iV Is the site significantly disturbed (Atypical Situation)? Yes c Transect ID: Is the area a potential Problem Area? Yes Plot ID: z (If needed, explain on reverse.) • VEGETATION Dominant Plant Species Stratum Indicator - Dominant Plant Species Stratum Indicator S. 1. 00- 9. . /72_ �p;v'a CL &loth �-,q 1i/ S / + 10. 3. —x^ d J tP V c✓r 11. _ Fi lq-co 12. 5. 13. 6. 14. • 7. 15. • 8. 16. Percent of Dominant Species that are OBL.FACW or FAC - • (excluding FAC-). /_ '/ t Remarks'PD 710y\ 0'r (fief 6,-d, W kln� %c "t&t, 1S 'G't V-A _. 14 nAvA, -11.< n► I 4)o lime, c� F�c�-��-�- 4 7 te_ s� ,f x,• -iv f//`` ,>n G/Jt 4441 ant le L .kJvt Srlwt. .,o/Jf a,L.c f6-4 oC• 7" 6 - (./ sA/ HYDROLOGY Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: Stream, Lake, or Tide Gauge Primary Indicators: _Aerial Photographs Inundated Other _Saturated in Upper 12 Inches _No Recorded Data Available _Water Marks Drift Lines Sediment Deposits Field Observations: _Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: /6 (in.) _Oxidized Root Channels in Upper 12 Inches _Water-Stained Leaves Depth to Free Water in Pit: (in.) _Local Soil Survey Data _FAC-Neutral Test Depth to Saturated Soil: (in.) _Other (Explain in Remarks) Remarks: J r 4 leG�►u Cat/f 4.r AQrvt�t Cjyr� 14,4, w: d 1,,cvi p i S 14.0611 l U I k h e.-( ti e cJed Pc-4N_ wt jam(, / —gS54 I•dl sa 147, • • SOILS Map Unit Name n/J (Series and Phase): U i S4/'.f Drainage Class: L[l�- Field Observations Taxonomy (Subgroup): Confirm Mapped Type? Yes No Profile- Descriotion: Depth Matrix Color Mottle Colors Mor,:a Texture, Concretions, Sinchos) Hcrizon SMunsell Moist) SMunsell Moist) Abundance/Co-mast Structure, etc. D —I t �- r sy3 Hydr c Soil Indicators: Histosol _Concretions a_Histic Epipedon • _High Organic Content in Surface Layer in Sandy Soils _Sulfidic Odor - _Organic Streaking in Sandy Soils.- Aquic Moisture Regime _Listed on Local Hydric Soils List Reducing Conditions _Listed on National Hydric Soils List _Gleyed or Low-Chroma Colors - _Other(Explain in Remarks) Remarks:• SOil � �til/ �0 /�L Gs✓'PYI A}, c .1ol�S � ���c.� ZS So� j PIA?, tie 4U^. -t, �vz;c fr /-0 7C `knne� 410rk_ 4.5 51/7L/cqv, fo,`!J ,,-nrok. ISA • ,.-A y 5Cs. WETLAND DETERMINATION Hydrophytic Vegetation Present? NO (Circle) (Circle) Wetland Hydrology Present? Yes 1pt '®a Hydric Soils Present? Yes Is this Sampling Point Within a Wetland? Yes Rorrarke: t VC H �i{iv/ TO//J j p d.7 ✓c /(n��.4Aj�f L y& ,s-e Approved by Hell AC 3/92 DATA FORM • ROUTINE WETLAND DE 1 ERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: 5W 2.3/5)" T. LINO Ava. vovr re.FP44cT Date: ,C 23 -97 Applicant/Owner: C p-F gewfoy, f v o lrc. ti)or1C.l b�1',; County: /c/.ve- Investigator: ( k-1 k,h'/.1'c3 State: Gd,,g Do Normal Circumstances exist on the site? CYdtr. No Community ID: J- 80 Is the site significantly disturbed (Atypical Situation)? Yes Transect ID: Is the area a potential Problem Area? Yes Plot ID: 1 (If needed, explain on reverse.) (ti-) VEGETATION Dominant Plant Species Stratum Indicator - Dominant Plant Species Stratum Indicator 1. 4/4Ks rccbva- MC, s 2. 6/, TYvG/toGete,06,_ FJ- 1O. . . 3. 1 u bvJ 1/1414 71 41 S FACtA. 11. 4. f' &POA„ c r vro4'uwcra p - F9 Gt,J 12. 5. V r•F;c ti t,P 0 1 r", _ice— 13. 6. 14. 7. 15. • 16. Percent of Dominant Species that are OBL,FACIA'or FAC p - (excluding FAC-). U O 7* Remarks: p I 0_ c-otA(44. Gtr/ w �-•sJr G .e S N1 HYDROLOGY Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: _Stream, Lake, or Tide Gauge Primary Indicators: _Aerial Photographs _Inundated Other _Saturated in Upper 12 Inches No Recorded Data Available _Water Marks Drift Lines - _Sediment Deposits Field Observations: _Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: (in.) _Oxidized Root Channels in Upper 12 Inches Water-Stained Leaves Depth to Free Water in Pit: 3 6 (in.) Local Soil Survey Data // FAC-Neutral Test Depth to Saturated Soil: > b (in.) _Other (Explain in Remarks) Remarks:__ jp+ (OC I O'v^ `-!/l.11.lcu. G Je �.� ' fr G J�o�IG - W w �� // 'wt� i k !-Ak N n-C ,(/d ✓Uv1.Cl1 -t I Vey wt J • • SOILS Map Unit Name (Sorir:s and Phase): U i S41,1 Drainage Class: Reid Observations Taxc oomy (Subgroup): _ Confirm Mapped Type? (:!64 No Profi e Descriotion: Depth Matrix Color Mottle Colors Mort Texture, Concretions, finches) Hcrizon (Munsell Moist) (Munsell Moist) Ahundance/Co•.trast Structure, etc. p-� /D Y2 3/3 /oY2 3/C v Hydric Soil Indicators: _Histosoi _Concretions _Histic Epipedon _High Organic Content in Surface Layer in Sandy Soils _Sulfidic Odor _Organic Streaking in Sandy Soils Aquic Moisture Regime _Listed on Local Hydric Soils List _ Reducing Conditions _Listed on National Hydric Soils List �" _Gleyed or Low-Chroma Colors - _Other (Explain in Remarks) Remarks: WETLAND DETERMINATION Hydi ophytic Vegetation Present? Yes (Circle) (Circle) Wet end Hydrology Present? Yes Hydric Soils Present? Yes Is this Sampling Point Within a Wetland? Yes (10 Remarks: • L, � hp 4/5 s-1-44tAirE r✓r� �n (91j , Av 45 7 Approved by H•U AC /92 I DATA FORM • ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: '5 W z 3 5- ST LIND AVE.. Cl1.vtRT ie Pt.4c T Date: 5--• 3 -7 7 Applicant/Owner: C��� of Re wf-ery. ,Dc,to( ( )0ek-J &f,'t County: /c/Ne- Investigator: State: CV/4 Do Normal Circumstances exist on the site? No Community ID: hl -7 S Is the site significantly disturbed (Atypical Situation)? Yes cflb Transect ID: Is the area a potential Problem Area? Yes Plot ID: 2. (If needed, explain on reverse.) VEGETATION Dominant Plant Species Stratum Indicator - Dominant Plant Species Stratum Indicator 1. Pl..lb03 Qij /4 co/o✓ S FCU- 9. T 2. /t 4Xpi,A; I Aru1.00i✓Vtc . ff FA-cA) 10. 3. • 11. 4 12. 5. 13. 6. • 14. 7. 15. 8. 16. Percent of Dominant Species that are OBL,FACW or FAC (excluding FAC-). • Remarks: A� /mN^ \W p1tA.f2— HYDROLOGY _Recorded Date (Describe in Remarks): Wetland Hydrology Indicators: _Stream, Lake, or Tide Gauge Primary Indicators: Aerial Photographs _Inundated _Other _Saturated in Upper 12 Inches No Recorded Data Available _Water Marks Drift Lines Sediment Deposits Reid Observations: _Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: (in.) _Oxidized Root Channels in Upper 12 Inches Water-Stained Leaves Depth to Free Water in Pit: 7/4 (in.) Local Soil Survey Data FAC-Neutral Test Depth to Saturated Soil: >(6 (in.) Other (Explain in Remarks) Remarks: SO I 1 0 / /o (�1_ SOILS Map Unit Name (Series and Phase): U RB,414 Drainage Class: raC Reid Observations Taxonomy(Subgroup): Corfrn Mapped Type? Yes No Profi!a Descriotion: Depth Matrix Color Mottle Colors Mot Texture, Concretions, (inchos) Horizon (Munsell Moist) SMunsell Moist) Abundance/Co-:vest Structure, etc. Z /d yfi �z- l D y t 3�6 C.v!u • Hydre Soil Indicators: _Histosol _Concretions _Histic Epipedon _High Organic Content in Surface Layer in Sandy Soils _Sulfidic Odor • _Organic Streaking in Sandy Soils _Aquic Moisture Regime _Listed on Local Hydric Soils List Reducing Conditions _Listed on National Hydric Soils List _Gleyed or Low-Chrome Colors- _Other (Explain in Remarks) Remarks: i �' c (c r So;I �(; 6�t//ter,�,..i � . NY c / •G f✓J / ;4,4/ru t e ✓ete WETLAND DETERMINATION Hydiophytic Vegetation Present? a No (Circle) (Circle) Wet)snd Hydrology Present? No Hydric Soils Present? a No Is this Sampling Point Within a Wetland? No Remarks: /2.t.5 (,e c--il Cu,c4 aye r�7ic � w/ l K--e t r 7161_ A/O7 err 23 vd Approved by HOU AC 3/92 DATA FORM • ROUTINE WETLAND DE LRMINATION . (1987 COE Wetlands Delineation Manual) Project/Site: '5 W z Sr — G/n/o Ave. RvPtAc T Date: 57- 2 -7 7 Applicant/Owner: C of Re WiLoy. f U IO UC. ti1or(c•i Z)e/'t County: /<7N6 Investigator: f /K 4,7Y/v'c3 State: L4),4) Do Normal Circumstances exist on the site? Creir No Community ID: W-7 5 Is the site significantly disturbed (Atypical Situation)? Yes cflb Transect ID: Is the area a potential Problem Area? Yes tQ Plot ID: (If needed, explain on reverse.) • (WC) VEGETATION • Dominant Plant Species Stratum Indicator - Dappwrawit Plant Species Stratum Indicator 1.e/1 .lf,ri3 aru►wt;.,a.teAC,,. &t f I 1 9. SPi%Wa do415to,/ r `• -fet-ee✓ 2-5a f i x S:'lt•Gh e ekSi,f S M- - 1 o. 3.(-oV►1uS S4Of 1G✓'o. s Fr4GkJ . it. 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Percent of Dominant Species that are 09. . FACW or FAC rO O / (excluding FAC-). (a Remarks: � '1% 17 O /1) 0� /� Ci/ /t1,,6..Gt //15\-v• . 11.S /J //,f -ee (AA_ f / // Jon s c if A ex 114 Y T 7b Citistvin HYDROLOGY _Recorded Data (Describe in Remarks): Wetland Hydrology Indicators: Stream. Lake, or Tide Gauge Primary Indicators: Aerial Photographs _Inundated Other 74- Saturated in Upper 12 Inches No Recorded Data Available Water Marks Drift Lines _Sediment Deposits Field Observations: _Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Depth of Surface Water: (in.) Oxidized Root Channels in Upper 12 Inches _Water-Stained Leaves Depth to Free Water in Pit: 4 (in.) _Local Soil Survey Date _FAC-Neutral Test Depth to Saturated Soil: /0 (in.) _Other (Explain in Remarks) Remarks: e.( d 0 Gf r7L� E�"1 6,/tx_,-- l Z Z-" /K a le/ 71-4 • 1e4/ 1 J / / NZa W CTrt,,� ! S (i lA e6t 1/ dj 7'G�, - �Q 1 ource � `ruvii � �Uf4 lend Appendix B Routine Wetland Determination Forms • Chroma is a measure of the intensity of grayness of the soil color. A chroma of 1, occurring with or without mottles, or a chroma of 2, occurring with mottles, is considered to be low and an indicator of hydric soils. • Mottles are spots or blotches of contrasting color occurring within the soil matrix. • Gleyed soils are predominantly neutral gray in color. • Soils are considered to be organic if at least 18 inches of the upper part of the soil profile contains organic material, or if the soil consists of organic material resting on bedrock. • Sulfidic materials result when mineral soils are waterlogged. Over time, a reducing environment develops in the soil, producing materials that emit a sulfidic odor. Soils at the Lind Avenue site were sampled with shovels and examined for hydric indicators. Soil pits were dug to a depth of approximately 20 inches to obtain soil profile information. Observed soil characteristics were compared to the U.S. Soil Conservation Service (SCS) descriptions of mapped soils(SCS 1973)to either confirm the mapping or determine if an inclusion is present. Most soils mapped by the SCS include areas of other soils (inclusions) which may compose from 2 to 50% of that unit. WETLAND BOUNDARY DETERMINATION An overall assessment was made of the site. Plots were sampled and evaluated for the three wetland criteria(vegetation, hydrology, and soils). A wetland or upland determination was made for each plot. Sample plot data were recorded on data sheets and are included in Appendix B. Wetland boundaries were determined based on plot determinations and visual observation of site characteristics. Wetlands were delineated in the field and marked on color aerial photographs. Impacted wetlands were marked with orange and black striped flagging affixed to vegetation at a height of 4 to 6 feet at 25-foot intervals. In areas where there was insufficient vegetation from which to hang flagging, orange-flagged wire stakes were used to identify the wetland boundary. The flagged wetland edge was surveyed by R.W. Beck and Jones& Stokes Associates. Wetlands were delineated by Mark Matthies, certified by the Seattle Corps Wetland Delineation Certification Program. BEMWETLANDS A-3 1 vl Son • I Table 1. Plant Species Wetland Indicator Categories Estimated Incicator Probability in Ca.egory Occurrence Wetland OBL Obligate. Occur almost always under natural conditions in wetlands. >99% FACW Facultative wetland. Usually occur in wetlands,but occasionally found 67-99% in nonwetlands. FAC Facultative. Equally likely to occur in wetlands or nonwetlands. 34-66% FACU Facultative upland. Usually occur in nonwetlands,but occasionally 1-33% found in wetlands. UPI.. Upland. May occur in wetlands in another region,but occur almost <1% always under natural conditions in nonwetlands in this region(Region 9). Source: Reed 1988. WETLAND HYDROLOGY Areas possessing wetland hydrology are inundated either permanently or periodically, or the soil is saturated to within 1 foot of the surface for at least 5%, and generally greater than or equal to 12.5%, during the growing season. Direct observations of hydrology, including ponding and soil saturation, may be limited during the dry season or may be misleading during the winter rainy season. However, indicators may be present throughout the year which confirm the presence of wetland hydrology during the growing season. Indicators include water-stained leaves, watermarks, drainage patterns, drift lines, visible sediment deposits, and exposed mud. HYDRIC SOILS Hydric(wetland) soils are defined as those soils which are saturated, flooded, or ponded long enot:gh during the growing season to develop anaerobic conditions that favor the growth and regeneration of hydrophytic(wetland)vegetation. Hydric indicators include low soil chroma, mottles, gleying, high organic content, and sulfidic materials: ➢ECK/w ITLAN DS 1 v15/97e A-2 • Appendix A. Summary of the 1987 Corps of Engineers Wetland Delineation Methodology INTRODUCTION Wetlands at the site were delineated using the methodology described in the U.S. Army Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987). The 1987 manual is applied by the U.S. Army Corps of Engineers and the U.S. Forest Service, Region Six, Watershed Assessment Methodology. For regulatory purposes, the federal agencies define wetlands as follows: Those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. The methodology for wetland delineation requires examination of three wetland parameters: vegetation, hydrology, and soils. For an area to be considered a wetland, a positive indicator for all three of these parameters must be present. HYDROPHYTIC VEGETATION Hydrophytic plants are those plants adapted to life in water, soil, or on a substrate that at least periodically lacks oxygen. Commonly occurring plant species have been assigned a plant indicator status by the U.S.Fish and Wildlife Service based on their frequency of occurrence in wetlands. Plant indicator status categories are described in Table 1. For a vegetation community to be considered hydrophytic, 50% or more of the dominant species in that area are typically rated as facultative or wetter. In the case where half of the dominant species are hydrophytic and half are nonhydrophytic(upland), the determination is made based on the total percent areal coverage of each of the two groups. For example, if more than 50% of the total areal coverage is composed of hydrophytic plants, the community is determined to be hydrophytic. BECK/WETLANDS A-1 I2/IS/97e Appendix A Summary of the 1987 Corps of Engineers Wetland Delineation Methodology Sediment that supports approximately 970 square feet (0.02 acre) of emergent vegetation (American brooklime)would be removed from the pool downstream of the culvert openings. Wetland vegetation would not be affected in the area upstream of the culverts; sediment would be removed from an unvegetated area of approximately 590 square feet upstream of the culverts within the wetland. Wetland vegetation would not be affected in this small area where plants have not yet established. Protection of water quality downstream of the sediment removal area would be mplished by working during low flows and bypassing the flows around the work area. Sediment s mples will be taken before construction to evaluate sediment quality and disposal requirements. Straw bales placed in the channel would be in place to trap sediment and soil pollutants before reaching Springbrook Creek. Citations nvironmental Laboratory. 1987. U.S. Army Corps of Engineers wetland delineation manual. (Technical Report 4-87-1). U.S. Army Corps of Engineers Waterways Experiment Station. Vicksburg, MS. .S. Soil Conservation Service. 1973. Soil Survey of King County Area, Washington. U.S. Department of Agriculture. Washington, DC. Reed. P.B., Jr. 1988. National list of plant species that occur in wetlands: northwest (Region 9). St. Petersburg,FL. Prepared for U.S. Fish and Wildlife Service wetland inventory, Washington, DC. 'enton. 1996. East side Green River watershed project plan and environmental impact statement. Prepared by R.W. Beck for the City of Renton. Seattle, WA. B K'WETLANDS 13 IV 5/97u • • latifolia), American brooklime (Veronica americana), reed canarygrass, and yellow flag (Iris • pseudacorus). (4) Install a new 24-inch culvert parallel to and east of Lind Avenue to connect a small channel north of the SW 23rd Street access road to the SW 23rd Street channel, south of the access road to restore drainage system function. Impacts associated with installation of the new culvert would occur from placement of the culvert's outlet into the SW 23rd Street channel. Approximately 100 square feet of wetland W-8N would be disturbed where the culvert daylights into the wetland's channel bank; approximately 100 square feet of wetland W-7S would be temporarily disturbed by construction activities to install the culvert at the inlet. Restoring the drainage system function would return the hydrology in the channel on the north side of the private access road and wetland W-7S to conditions that existed before the existing culvert was plugged. Re-establishing the drainage from wetland W-7S to wetland W-8N could result in the potential loss of approximately 0.5 acre of wetland hydrology in the 1.75 acre wetland W-7S. Lowering of surface water elevations in the channel portion the wetland could reduce the amount of surface water or area of saturation in the outer perimeter of the wetland. The wetland area directly affected from installation of the culvert would be in the rock-lined north bank of the channel and would not result in significant impacts to the wetland as no wetland vegetation would be removed. The culvert would be installed during the dry season to further reduce potential impacts to water quality. If surface water is present in the channel north of SW 23rd Street occurs during construction, a temporary barrier would be placed to prevent surface flow from the channel to the construction area. Surface flow could then be rerouted downstream of the project area using a bypass pump system. The system of sedimentation fences and strawbales discussed under element No. 1 would be in place to reduce sedimentation impacts to the water in the channel. Any wetland area temporarily disturbed from construction activities would be revegetated with shrubs common to the area. Placement of the new culvert would restore the drainage system north of the SW 23rd Street access road. Late spring surface water elevations in the channel within wetland W-7S could be reduced approximately 1.8 feet. (This is based on the difference of existing water elevations in the wetland and water elevations associated with the proposed project in place.) Although the installation of the new culvert would reduce the frequency and depth of inundation during storm events along the channel, the scrub-shrub vegetation associated with this wetland is not expected to change. Species such as willow, reed canarygrass, and spirea growing in the wetland, and outside of the channel within the wetland, are tolerant of changes in water levels and are expected to adapt to the new hydrologic regime. High ground water within 18-24 inches of the surface of the wetland would continue to support the growth of scrub-shrub vegetation. Additional scrub-shrub vegetation may establish within the channel from the reduced water levels. (5) Remove sediment from the twin 9-foot by 14-foot culverts under Lind Avenue at SW 23rd Street and immediately upstream and downstream of the culvert openings. BECK/WEMNDS 12 12/I591u • Existing water elevations in Wetland W-8N during storm events are caused by the undersized culverts under the Olympic Pipeline crossing. Hydraulic modeling of surface water elevations within the SW 23rd Street channel indicate that the surface water elevations for a 2 year storm would be reduced by 2 feet by the culvert replacement. This is not expected to impact wetland acreage associated with wetland W-8N because (1) surface water connections between the channel and wetland W-8N would still occur and surface water would continue to inundate wetland W-8N, (2) base flow within the channel is not expected to change, and (3)two-year storm overflows into the vi,etland are relatively short in duration (less than one day) according to hydrologic/hydraulic simulation. The decrease in the maximum water levels during storm events is not expected to significantly change the wetland vegetation. Some herbaceous species may decrease (e.g., cattail and yellow flag) whereas other species may increase(e.g., sedges and rushes). Willow and spirea are species adapted to water level fluctuations and are expected to continue to dominate the wetland. (2) Remove the abandoned beaver dam at the mouth of the SW 23rd Street channel as it enters Springbrook Creek west of Lind Avenue and south of the SW 23rd Street access road and selectively remove debris and vegetation between Springbrook Creek and Lind Avenue. Removal of the small beaver dam which has deteriorated to a loose assemblage of sticks will not require any removal of wetland vegetation. No impacts on the channel or associated wetland are expected to occur. The beaver dam can be removed with hand held tools and equipment to avoid the disturbance of surrounding vegetation. Because the dam is loosely held together, base flow within the channel is not expected to change significantly to affect the surrounding wetland. High groundwater and surface flows associated with winter and spring storm events will continue to supply a source of water to support the scrub-shrub and forested wetland W-10N. Removal of debris and vegetation along the channel between Springbrook Creek and Lind Avenue would be done by selectively cutting lower growing vegetation hanging into the channel that obstructs flow. This activity would not directly impact the wetland or channel because only above ground material would be removed. The ground surface and soils would not be disturbed by the activity. Overhanging canopy from larger willows that does not obstruct channel flows would not be removed to maintain a shaded canopy over the channel. (3) Remove accumulated herbaceous and shrub vegetation along 1,180 linear feet of the SW 23rd Street channel from East Valley Road to Lind Avenue. Vegetation will be cleared along the south bank of the channel and within the channel. Vegetation will be cleared by mowing and scraping and would not affect the topography of the wetland. Although the removal of vegetation would result in the loss of some wildlife habitat, the amount lost is incremental relative to the amount of surrounding scrub-shrub habitat in wetlands W- 8N, W-7S, and W-10N. Fish passage in the channel will be improved and this reach will be restored as off-channel habitat for Springbrook Creek after the Olympic Pipeline culvert is replaced (see Element 1). Emergent vegetation to be removed from the channel include common cattail (Typha 8E¢K/WE LANDS 11 I7/15/97u I • revegetating wetland and buffer areas temporarily disturbed by construction with native wetland shrubs (such as the slopes created around the inlet and outlet of the new box culvert and the inlet of the new 24-inch culvert); and • creating approximately 200 square feet of wetland between the outlet of the new box culvert and the existing SW 23rd Street channel. Specific impacts from each of the five project elements are discussed below. (1) Replace the existing 18 inch culverts under the Olympic Pipeline crossing of the SW 23rd Street channel with a new pre-cast concrete box culvert. Impacts from the culvert replacement will occur from the construction of the box culvert's inlet structure within a small portion of the wetland and from construction of the channel connecting the new box culvert to the existing SW 23rd Street channel (see Figure 4). Temporary construction impacts and the installation of the new box culvert are expected to be limited to a cumulative area of approximately 350 square feet of wetland. Downstream sedi nentation issues will be minimized by routing any channel flow that may occur during construction in a bypass pipe. The area where work will occur will be protected from the rest of the channel by sedimentation fences. Work would be scheduled to occur outside of the wet season duri;ig low flows. Wetland area that will be impacted is primarily rock lined slopes where the new box culvert's inlet and outlet occur. At the outlet, scrub-shrub vegetation (willow and red-osier dogwood) is growing at and above the wetland boundary (approximately the ordinary high water line). Several willow and/or red-osier dogwood plants would likely be removed for placement of the new box culvrt. The new channel slopes that are to be constructed connecting the box culvert to the existing SW 23rd street channel would be revegetated with native low growing shrubs to compensate for the vegetation removed to construct the channel. Approximately 200 square feet of wetland and channel bott:gym would be created from construction of the new channel. No impacts to fish are expected to occur. Fish have not been observed in the channel and curr.nt use would be limited by the downstream beaver dam. The proposed project replaces culverts that are a barrier to fish with a fish passable culvert. Downstream water quality would be protected during construction by placement of sedimentation fences and rerouting surface flows back into the channel downstream of the construction area via a bypass pipe. A series of straw bales would be placed in the channel to contain sediment from the water in the bypass pipe. The bales would be removed after all construction is complete. Sediment would be removed if large enough quantities accumulated behind the bales. Terr porary dewatering of the culvert construction area to allow for construction of the box culvert and other project elements could result in pumping of turbid water through the bypass system and into the SW 23rd Street channel. The straw bales in the channel would trap any sediment before reaching Springbrook Creek. BECK/1 VErLAN DS 1 0 12/15/9"'u storage functions by increasing the flood storage volume of the SW 23rd Street channel and removing restrictions in the system. Removal of the restrictions would also improve fish passage and add fish habitat that is currently not accessible. Other habitat functions associated with the channel and surrounding wetlands would not change as scrub-shrub vegetation types would persist over time. Additional scrub-shrub habitat is likely to increase within the channel north of SW 23rd Street and east of Lind Avenue as discussed below under project element number 4. Project Impacts and Measures to Reduce Wetland Impacts Cumulative impacts on wetlands from the proposed activities are as follows: • permanent fill from placement of the new culverts or riprap at the outlets of the culverts would be approximately 300 square feet (the majority of the riprap fill would occur in areas where rock-lined channel banks or unvegetated channel bottoms exist); • temporary disturbance from the construction related activities to place the new culverts would be approximately 250 square feet (temporary disturbance occurs primarily on rock-lined banks and unvegetated channel bottoms); and • temporary disturbance from the removal of accumulated sediment at the inlet and outlet of the twin culverts would be 1,400 square feet (to a depth of approximately 2.5 feet would equal 130 cubic yards). The total impacts on wetlands from improvements to the culvert drainage system would be 1,950 square feet(0.04 acre). In addition,vegetation maintenance along the SW 23rd Street channel would temporarily remove approximately 8,000 square feet of young shrub and herbaceous plants from the channel banks and bottom. Mitigation measures taken to minimize impacts of the project are as follows: • avoiding impacts on the higher quality portions of wetlands W-8N, W-10N, and W-7S; • minimizing the area of wetland impact by limiting disturbance to primarily those portions of the channels where rock-lined slopes, unvegetated channel bottoms occur; • use of bypass flow pipe to maintain base flow in the SW 23rd Street channel during construction and to route water around the construction areas; • placement of strawbales in the downstream portion of SW 23rd Street channel west of Lind Avenue to contain any sediment that may be transported downstream from the project activity; BECK/WETLANDS wI /97u 9 • I pipelines. An upland berm exists between the two wetland areas where the pipelines cross the channel. Vegetation. Vegetation in the wetland area where the twin culverts discharge into the channel is dominated by American brooklime. Some reed canarygrass and scattered Douglas' spirea is found within the ordinary high water line along the steep banks surrounding the pond. Riprap covers the slopes surrounding the wetland area. The wetland area immediately west of the Olympic pipeline crossing consists of a scrub-shrub wetland and the continuation of the SW 23rd Street channel. The channel bottom is generally unvegetated with willows, red-osier dogwood, and Douglas' spirea growing among the rock-lined steep banks. The scrub-shrub wetland area adjacent to the channel is dominated by the same species in the shrub layer with reed canarygrass, sedge, and American brooklime found in the herbaceous layer. Douglas' hawthorn (Crataegus douglasii), Oregon ash (Fraxinus latifolia), and black cottonwood are scattered throughout this edge of Wetland W-10N. Hydrology. Surface water was present during the time of the delineation within the ponded • area at the mouth of the twin culverts and in the SW 23rd Street channel west of the pipeline crossing. The water source in the channel is a continuation of the drainage along the 23rd Street channel east of Lind Avenue and local runoff from pipe systems in Lind Avenue. Wetland hydrology in the scrub-shrub wetland west of the pipeline crossing and above the channel elevation was evident from indicators of ponding water(i.e., water-stained leaves and algal matting). The elevation of the scrub-shrub wetland is approximately 4 feet above the channel bottom, but is lower than the berm where the pipelines cross the channel. Seasonal high groundwater is assumed to be present in the scrub-shrub wetland adjacent to the channel. Soils. Soils in this portion of the wetland were mapped as urban by the Soil Conservation Service (SCS 1973). Soil characteristics in the upper 10 inches of the vegetated portion of the wetland were silt loam texture with a matrix color of 10YR 3/2 with 10YR 3/6 mottles. Sulfidic smells from the soil in the channel indicated anaerobic conditions were present. Upland soil characteristics were observed on the berm at the pipeline crossing and immediately beyond the wetland edge of Wetland W-10N (see plots 2, 3, and 4). Soil characteristics at a depth of 10 inches were loamy sand texture with matrix color of 2.5Y 3/3 and 10YR 3/3 without mottles. Functions and Values of Wetlands within Project Site Functions and values typically associated with wetlands include water quality improvement, flood storage, groundwater exchange, shoreline erosion protection, habitat functions, and cultural/socioeconomic values. Because project activities are proposed in isolated portions of the wetland systems where rock-lined channel occurs, the primary functions to be affected by the project are flood storage fish passage. Implementation of the project elements would improve the flood BECK/WETLANDS 12/I597u 8 4 Vegetation. Vegetation was not present in the portion of the wetland affected by the culvert installation and sediment removal. A few scattered sedge (Carex sp.) plants, reed canarygrass, Douglas' spirea, and sitka willows are present at the upper edge of the wetland beyond the project construction area for the culvert installation and sediment control. The SW 23rd Street channel between Lind Avenue and East Valley Road where vegetation would be removed for channel maintenance is dominated by shrubs such as sitka willow, Pacific willow(Salix lasiandra), and black cottonwood, along the channel edge. Reed canarygrass, common cattail (Typha latifolia), and American brooklime(Veronica americana) are present in portions of the channel bottom intermixed in the open water. The channel ranges in width from 10 to 25 feet with some of the shrubs overhanging across the channel. Vegetation in the upland south of the channel at the western end of the channel was dominated either by Himalayan blackberry or red alder and black cottonwood with an understory of California blackberry (Rubus vitifolius) and stinging nettle(Urtica dioica). Hydrology. Surface water drains to the channel from a portion of the valley west of SR-167 and also from the south portion of the Panther Creek Wetland east of State Route 167. Surface water in the channel eventually discharges into Springbrook Creek approximately 900 feet downstream and west of the project area. Surface water depths in the channel ranged from under 12 inches to over 24 inches near the opening of the twin 9-foot by 12-foot culverts under Lind Avenue. Surface water was not present in the adjacent portion of Wetland W-8N southeast of the channel and beyond the limits of the proposed project activity. Soils. Soils in this portion of the wetland were mapped as urban by the Soil Conservation Service (SCS 1973). Soil characteristics in the upper 10 inches of the unvegetated portion of the wetland were silt loam texture with high organic content, matrix colors of N 2/0, and sulfidic smells. Upland soil characteristics at a depth of 10 inches were loamy sand texture with a matrix color of 2.5Y 4/3 (see data plot 2). Soils were "dry" as determined by the dusty nature of the soil as it was removed from the soil pit. Wetland W-10N Wetland W-10N is scrub-shrub wetland west of Lind Avenue with the SW 23rd Street channel farming the northern border of the wetland. The east end of the channel was delineated for this project where the new box culvert and channel will be placed under the Olympic Pipeline Co.'s pipelines and where sediment will be removed from the downstream end of the twin culverts running under Lind Avenue. Two wetland areas were delineated; an emergent wetland immediately downstream of the twin cyilverts, and a scrub-shrub wetland associated with the SW 23rd Street Channel west of the Olympic B K/WETLAN iv/sron DS 7 Table 1. Summary of Site Conditions of Wetlands W-7S,W-8N,and W-10N at the SW 23rd Street and Lind Avenue Drainage and Restoration Project Site Wetland Wetland Approximate Size Dominant Soils City of Renton No. Classification (acre) Species (SCS 1973) Category W-7S PSS,PEM 1.75' Salix sitchensis, Salix lasiandra, Puget silty clay loam,Snohomish silt 3 Typha latifolia, Cornus stolonifera, loam,Tukwila muck(all considered Phalaris arundinacea hydric soils) W-8N PSS,PEM 9.5 Salix sitchensis, Salix lasiandra, Puget silty clay loam,Snohomish silt 2 Typha latifolia, Cornus stolonifera, loam,Tukwila muck(all considered Phalaris arundinacea, Fraxinus hydric soils by the SCS) latifolia, Iris pseudacorus W-1 ON PFO,PSS,PEM 8.6 Salix sitchensis, Salix lasiandra, Urban,Woodinville silt loam(hydric 2 Typha latifolia, Cornus stolonifera, soil) Phalaris arundinacea,Populus trichocarpa Source: East Side Green River Watershed Project Plan and Environmental Impact Statement;Volume II-Appendices 'The area of W-7S was over estimated at 3.3 acres in the City's wetland inventory. An area of 1.75 acres is considered more accurate based on site analysis and aerial photograph interpretation. occur. Figures 4 and 6 show the wetland boundary in the project area. See Appendix B for wetland data sheets. Wetland W-7S Wetland W-7S is a long linear ditch with a narrow portion of the ditch (5 to 10 feet wide) containing open water during the time of the delineation. The ditch banks are vegetated with scrub- shrub and herbaceous vegetation as discussed below. The west end of Wetland W-7S was delineated for this project where the non-functioning culvert is located. This portion of the wetland that would be directly affected by installation of the culvert under SW 23rd Street is a palustrine scrub-shrub wetland. The features of this portion of the wetland are described below. Vegetation. Vegetation is dominated by Sitka willow(Salix sitchensis), red-osier dogwood, and reed canarygrass. The vegetation is growing on the banks of the ditch around the standing water in the ditch at the opening of the non-functioning culvert. Vegetation in the upland surrounding the wetland area is dominated by Himalayan blackberry, reed canarygrass, and red alder(Alnus rubra). Hydrology. Wetland hydrology is supported by surface water runoff from surrounding upland areas that collects in the ditch. Water depths in the ditch ranged from 12 to 22 inches during the time of the delineation. Inundation within the ditch varies from seasonal to perennial depending upon the amount of yearly precipitation. During the time of the delineation, saturated soils along the banks and low terraces adjacent to the ditch were associated with the groundwater in the general area. Surface water does not drain into other wetlands or channels because of the plugged condition of the existing culvert. Soils. Soils in this portion of the wetland were mapped as urban by the Soil Conservation Service (SCS 1973). Soil characteristics in the upper 10 inches of the vegetated portion of the wetland were silt loam texture, matrix colors of 10YR 3/2 with 10YR 4/1 and 10YR 3/6 mottles, and sulfidic smells. Upland soil characteristics were sandy loam texture with a matrix color of 10YR 3/3 with very few 10YR 3/6 mottles. Soils were "dry" as determined by the dusty nature of the soil as it was removed from the soil pit. Wetland W-8N Wetland W-8N is scrub-shrub wetland with the SW 23rd Street channel forming the northern border of the wetland. The west end of the channel was delineated for this project where the south end of the new culvert will be placed under SW 23rd Street and where sediment will be removed upstream from the existing 9-foot by 14-foot culverts running under Lind Avenue. This portion of the wetland that would be directly affected by project activities is open water with scattered vegetation along the rock-lined banks. BECK/WEMNDS 6 12/ISA7u 1 I Summary of Site Conditions The primary land use within the project site is urban. Parcels surrounding the project site where the work will occur are developed as businesses or undeveloped pads. Wetland areas are present in many portions of the parcels that have not been filled (see Figure 2). Lind Avenue is a paved,public road. SW 23rd Street is a paved private access road (east of Lind Avenue) owned by Olympic Pipeline Company and a gated gravel access road owned by the City of Seattle west of Lind Avenue. The SW 23rd Street channel is located south of SW 23rd Street and flows east to west. It crosses under Lind Avenue in twin 9-by 14-foot corrugated metal pipe culverts and discharges into Springbrook Creek approximately 950 feet west of Lind Avenue. Petroleum pipelines owned by Olympic Pipeline Company cross the SW 23rd Street channel west of Lind Avenue in a north to south direction and are enclosed in an earthen berm. Undersized 18-inch culverts currently connect the SW 23rd Street channel at this pipeline crossing and are subject to frequent plugging with debris and sediment. A separate, smaller channel is located north of the private access roads in SW 23rd Street with an east to west direction. A 30-inch culvert crossing formerly conveyed flows under Lind Avenue; however,the culvert was inadvertently plugged and the ditch west of Lind Avenue was filled in the mid 1980s from the development of the parcel west of Lind Avenue and north of SW 23rd Street. Water in the channel north of SW 23rd Street and east of Lind Avenue no longer has an outlet because of the plugged condition of the culvert under Lind Avenue. Lack of a defined ditch west of Lind Avenue and the steep fill slope from the adjacent parking lot prevent restoring the former drainage system. The SW 23rd Street channel lies within two larger wetland areas previously identified in the City of Renton's wetland inventory database. Wetland W-8N occurs east of Lind Avenue and Wetland W-10N is west of Lind Avenue. The ditch north of SW 23rd Street lies within Wetland W-7S. The channels where the proposed activity would occur are considered part of the larger wetlands because(1) the SW 23rd Street channel is contiguous with wetland W-8N and W-10N on the east and west side of Lind Avenue, (2) the channel north of SW 23rd Street is contiguous with wetland W-7S, and (3) portions of the channel (bank and bottom) are vegetated (although portions of the proposed activities occur where the channels are unvegetated). Table 1 summarizes the general site conditions of Wetlands W-7S, W-8N, and W-10N. The three wetlands are separated by the private access roads in SW 23rd Street and Lind Avenue. Results of Wetland Delineation Previous wetland inventories conducted for the City of Renton have identified the wetlands W-7S,W-8N, and W-10N (Renton 1996). To determine specific project impact areas on wetlands W-7S, W-8N, and W-10N, wetland delineations were conducted within the area of the wetlands where excavation or filling would occur to place the new culverts. The vegetation, soil, and hydrologic conditions are described for the portion of the three wetlands where project activity would BECK/WEILANDS 5 12/15✓97u 00IL IL 0 7 7i 1 e le e W Z E s La I- 7 2 2 j 0 F F V a 30 5 b....k F c< F 30 z —y 20 =10 — r 10 REMOVE-SILT AMiERIAL .err 7i.- .::...:..... _ 1HEN_kEVECETA c !!U-!x Lt' 0_ J� 14 --r— n 0 0 PROFILE PROPOSED 24* CULVERT w w SECTION SCALE: 1- 20' N O N 0 n Of I h O O S'n Applicant: City of Renton % Date: 12-15-97 01 o Scale: 1"=20' Datum: NAVD88 Project Name: City of Renton SW 23rd Street Drainage Improvements of Figure 7, Longitudinal section of 24"gg culvert east of Lind Avenue. • I :.' k 1 / , --- I WATER VA W.S.-..‘ Y ' H(A.E .- -- ..--' -- ,• ,,tc.. „-- .--.—. DallNG t,30 WIDP-' ......... , - < 12"W4/-I -N. 1 -t---I I P . I 1 I /,' i :, J.;...6;,w.s......p.•................. (MPAARRT1CNELSEI3L1634. 04-00-2-8-5-) . CENTERLINE M6NUMENTI \ EL 21.32 (PIN1INSIDO : \_ i I W - . EXISTING................. e .• . MONUMENT CASE)‘dIc.:iiLYOr __ViEtAtiira-* r 9....IE 11.47•••••••••••••••••.:. BOUNDARY OF WETLAND —..........- ----/ImPAPT% A 1...77.-.7.-.7-.-nt,F ..?-er•::4,••,:,:s:.,••,•.. `•4.8--_ Ii t ;:i- .. ----,,,,, _ _ ; —- • Y 4_4: :- .. . 6•Cr fAltli PiPELVIE. ....___...-._.". MAIN PROT•CIE COitEi.i.-Th's. : I I I •., ------- . . 1 ; -..\, . . ._... : , — _4- •,-,,, DMH Nb-4, , : A,............__ ... VAULT• ol --0-------t i 4 1-:,:--- --- ......:...N- ______....6--z......._.... ,LLeuR(1.Eik, piPfal, I 1 t 1 a.-- ... .._:1„.1 20" tIETRoUla.i PiPiaiNF ..,__... . ''. EXIST ELEC i L i I EDGE OF ASPHALT PAVEMENT .I X CONDUIT i 1 PROPOSED 24" CULVERT 4.11 ss, •:''. ---•-CATE PC61. 11----- r,t1tE(Bf-1,X.,........ .::,,- :::t..n.... .2.Da.' *.--.................0Ciiiine'PiPELINE____,., , b.' ......,,, - .... .. ..,..,,,... __.(PARCEL-#3023059013.3)- "-----..---- .._............ ,--=-14' WIDE x 9' HIGH / CULVERT. REMOVE • - -SILT IN CULVERT g l i , /- . A ,,-,. . . . . . . .. ... . .... . . . . . . . . _., . i —T----7-i . . . ti;...-,....1,.., . . . • •••••• • • • • • • • • WETLAND CONTINUES ji 1 1 i i / 1 7,d'ii•P-. .IE.0.2..•...•.........• • • • •;Ai.- II I I i 1 1 1 .-/r. 44. . .......„,--- T9.,E/NsT !-• 6 i 1 i 1 I i • • • A...EXCAVATE,.W.' DIMENTS------ 7 tr.1 iiii ! I ".,."..Z-3'...1M1W-TilIS AREA \ I .• i ri 4 1 .,:, , . . ...,±i . . . . ,..., .,......- \ -... . ,,„-- • ii ! r !, -. . -.-. -.. -Ak-- ,._.....--- \ i ' 1 I P ,,'s,, '. ;•. -'.../ OF WETLAND \. i r I I (..tai'\ 1/18N IE 6e31 / (..f) .'1 i i....1i.... ',.. -., --'••••• ..7 •••• / , E ,Zikk • --- ./. \---14' WIDE x 9' HIGH w a ' • '- , ./ ljRT . (.,-, , Vr ,„ ILI SILTl IN CULVERT VE • < : I W 1 , 1 0 ., W8N-P1 z - I i * ; 1:. -0 ' i I i I ,• • Lid i I i i • ; --'.' > i !-- I; I — il Z i I ; , 1, .., P 1 U) I PU6ET WESTERN 0 i (PARCEL #2193100010) Z, CURI3-4 I i 0 1.- I II 5 . : . "?c. 1 I I ., I —!— i i tur..... Fidu.R of:1;c•s 1 i st I I t _ o t I THilta:. utiEs I o 1-- i s , Applicant: \City f Renon . • Date: 12-1 —g7 k , -..„ ,,g • \ \Scale: 1 =3 , --, 1 \ •-.....,_ --. , , 1 ‘, , , „,„,„-..... - -...... .......,...,,., Datum: NAY088: • ., ................ i . ..... , Project Narrie: City of :Renton SW 23m, Street Dfainage--Infpr6vernenls --, '--.... , ..., . Figure 6, Plan view of 24" culvert at the SW 23rd Street channel east of Lind Ave bank would be cut (approximately 2 feet wide). In addition, in those areas where emergent vegetation is growing in the channel, the above ground portion of the vegetation would be removed by scraping the vegetation at the ground surface from the channel with a backhoe. No widening or deepening of the channel or soil disturbance is intended from this maintenance activity. The backhoe would operate from the SW 23rd Street access road. (4) Install a new 24-inch culvert parallel to and east of Lind Avenue to connect a small channel north of the SW 23rd Street access road to the SW 23rd Street channel, south of the access road to restore drainage system function. Because of the existing non-functioning 30-inch culvert that crosses Lind Avenue north of the SW 23rd Street channel, a new culvert would be installed to route flow from the small channel located north of SW 23rd Street and east of Lind Avenue to the SW 23rd Street channel. Development of the property north of the channel and west of Lind Avenue plugged the existing culvert approximately 10 years ago. Because this channel currently has no drainage outlet along Lind Avenue or SW 23rd Street, surface water no longer drains but collects in the channel and has created wetland conditions and flooding problems on the property north of SW 23rd Street and east of Lind Avenue. Installation of a new culvert would maintain the drainage system that was in place before the culvert was plugged. The new culvert would be a 24-inch diameter culvert with the inlet located just east of the *sting 30-inch non-functioning culvert's inlet. The invert elevation of the north end of the new dilvert, 12.0 feet (NAVD), is equal to the existing non-functioning culvert. The invert elevation of the south end of the new culvert would be 8.2 feet (NAVD), which is approximately 1.7 feet higher than the invert elevation of the existing 9-foot by 14-foot culverts under Lind Avenue south of SW 23rd Street. Riprap would be placed at the culvert's outlet to dissipate stormwater runoff entering into the SW 23rd Street channel. See Figures 6 and 7 for the plan and profile alignment design of the new culvert. (5) Remove sediment from the twin 9-foot by 14-foot culverts under Lind Avenue at SW 23rd Street and immediately upstream and downstream of the culvert openings. This activity is part of the periodic maintenance required to maintain the positive drainage along this portion of the SW 23rd Street channel. Approximately 2 to 3 feet of sediment has accumulated in the SW 23rd Street channel and at both openings of the twin culverts. A backhoe and/or vacuum truck positioned on the SW 23rd Street access road would remove this sediment to the invert elevation of the culverts. The sediment removal would occur within approximately 20 feet of the culvert opening on the east side of Lind Avenue, and within the pool area on the west side of Lind Avenue. Sediment would be disposed on an upland site. (Sediment within the culverts would be removed using a combination of human assisted shoveling and a vacuum device to bring the sediment to a truck/storage container on the access road.) B CK/We LANDS 4 I2rI Y97u app.oximately 10 feet long with 1.5:1 side slopes would be excavated in the upland area to connect the box culvert outlet with the existing SW 23rd Street channel. The inlet and outlet of the box culh ert would be rock-lined to maintain the structural integrity of the culvert to channel connection. The remaining portions of the 1.5:1 side slopes of the channel would be revegetated with native low growing wetland shrubs. (2) Remove the abandoned beaver dam at the mouth of the SW 23rd Street channel as it enters Springbrook Creek west of Lind Avenue and south of the SW 23rd Street access road and selectively remove debris and vegetation between Springbrook Creek and Lind Avenue. The abandoned beaver dam would be removed to reduce debris accumulation and upstream sedimentation problems, reduce flood impacts, improve the potential passage of fish from Springbrook Creek into the SW 23rd Street Channel, and provide habitat during high Springbrook Creek flows. See Figure 3 for the location of the abandoned beaver dam. The beaver dam is approximately 6 feet wide and 16" inches high within the ordinary high water mark of the channel and con;>ists of small, loose mix of willow twigs. Debris and shrub vegetation within and four feet above the level of the ordinary high water marl,:in the ditch between Springbrook Creek and Lind Avenue would be selectively removed. Hand held equipment would be used to cut vegetation above ground to avoid disturbance to the ground surface and minimize impacts to the overhanging shrub canopy outside of the clearing limits. Overhanging canopy from larger willows that does not obstruct channel flow would not be removed to maintain a shaded canopy over the channel. (3) Remove accumulated herbaceous and shrub vegetation along 1,180 linear feet of the SW 23rd Street channel from East Valley Road to Lind Avenue. Removal of the vegetation is a periodic maintenance activity that would be done to restore a defined flow channel and help maintain positive drainage. Approximately 8,000 square feet of vegetation within the wetland (channel and the channel's north bank) would be removed. Young shrub vegetation would be removed in the upland area and a narrow strip of wetland along the char nel's north bank; emergent vegetation would be removed within the wetland in the channel. The existing SW 23rd Street channel along this reach is a V-shaped channel and varies in width from 10 to 25 feet at the elevation of the adjacent wetland area. Its depth below the ground surface of the wetland to the south, varies from approximately 2 to 5 feet. The surface of the adjacent private road is approximately 7 to 12 feet higher in elevation than the bottom of the channel. Vegetation removal along the south bank would be cut just above the ground surface. Reed cana rygrass (Phalaris arundinacea), black cottonwood (Populus trichocarpa) saplings, and Himalayan blackberry (Rubus discolor) would be the dominant vegetation to be removed. Other wetland shrubs such as Douglas' spirea(Spiraea douglasii), red-osier dogwood (Cornus stolonifera), and willow (Salix sp.) would also be cut. Vegetation would be cut from the edge of the SW 23rd Street road surface, the upland portion of the banks, to the water surface. Because of the steep north channel bank (2:1), a narrow strip of shrub vegetation within the wetland area on the north channel BECK/WEIUNDS 12/15/9711 s 0 0 0 1 ( Hj { d 1 < aai i , { J t1 1'!'031 A-iIj { ,!' 0 J g :ex c eS 3Nf1341d .o $ I - w5- 3Nf13dld pini jj.Z1 '0 1 a N a 8i 1 '1 I 1 3 • 3Nfl3dd Hf131 LLOG `i 1 { i ro 1 '�tt 1 i I 1i I n Si 0 0 8 PIf11V0 flQ§VN 133J NI NOLLVA313 Applicant: City of Renton 1. Date: 12-15-97 Scale: 1"=20' I Datum: NAVD88 o Project Name: City of Renton SW 23rd Street Drainage Improvements Figure 5, Longitudinal section of 10' x 4' box culvert west of Lind Avenue. , . ' . ) I ....- .. 21... --- —...,_. -._ ;9.7' •- — . - 16.4 ______ iii ANCHORS--- %, . --16.4 --:- r ........____ _.....--1 f,4 _____ ..--.154 i _...... L. - - - - C ..._ EXISTING ACCESS ROAD - -- i...i T F.-----"' ----- -UTit In' POLF.. , - CITY OF SEA PROPERTY, PARCEL #3023059066) • •• r 't .- - eti, N. WE TNI:\i'DN siM,P,A_FT AREA ....._....A.f. f•.,:,. ••••' I N, ........- ''"- - - \ • ;,7 --I-/-4 i , _ • ., ,, 4:-:-....r.P-.:-........................................... - 7-7-7. .ws:, "IF I ROCK SURFACED IF - 4 1 x fli 2 i b" CUL'-r-•.:1".::', I M AIN TENANCE-ACCE /;•••'-'*1(.."; •• •••'••••••••••••••••••'%i.•-.: -4.4 at ''Mk s.'„)., ---,--- 11111M11 N 1;.?"). .... -,„i l----,..:.; -•'"--fl ...., REMOVE EXISTING 18" CULVERTS.... / / W1O -P3 EXCAVATE I [ 0 --.. ••••. 2'-3' WITHIN•THR/1/4REA --- / N ti lip al V "•••:":•.", j ...r• ,\ ";•5, C 1. RIPRAP, MT ....- .\ , ,-;-, 4 Vit -1 I .• II I s."'''''• ::'''. it )0----1 L.;.,...--,-7!-,:\ \\.7' ". .......-• . 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I - sr).....--.. ....*... 18.:-: - ....... ___ 7 a; ,„, 1 „s.„ • .-. . ; ................. r... „ .s. — — 0 , OLYMPIC PIPELINE c., (PARCEL #3023059084) I \ \Applicant: City of Ren.:on • ,...-- Date: 12-15-97 )r) o • (2, Scale: 1"=30' 15 Datum: NAVD88 Project Name: City of Renton SW 23rd Street Drainage Improvements 1 ci Figure 4, Plan View Box Culvert S.W. 23rd Street, West of Lind Avenue S.W. i''W O J •• • _ ...----..1 i 12•' r, i ZN ~ Zj \` N i ,. rt36-;-,:to. yy^ KOHK . .1-..'.. 'eii]:i:iV 2 R F W y' U ` y ....NW0op 3 z-g Zg1 k 1::::W��w- z «� ` ' ::IKZ� 7 W 8 ____. A.S•..3L1N3AY QN .,,,,W, m ': 1 3 ""._..... h O y k fit: 1I�. 1.J :7 e,6 N" ® ( 1 3 rWm oWz t.;51 Z S A•-- ..Si33aD Hooa8ONI d:S Applicant: City of Renton o Date: 12-15-97 CC Scale: 1"=400' o Datum: NAVD88 Y Project Name: City of Renton SW 23rd Street Drainage Improvements Figureci 3, Location of proposed project elements along the SW 23rd Street channel 1 SW 23rd Street between Springbrook Creek and East Valley Road, and in a ditch north of SW 23rd Street channel and immediately east of Lind Avenue. Prciect: Description The general purpose of the proposed project is to maintain and improve the existing flood cor,trol and drainage systems along SW 23rd Street at Lind Avenue in Renton, Washington. The existing system is not functioning to provide adequate flood control as existing culverts are undersized or plugged, and existing channels have become reduced in capacity and flow capability with sediment or vegetation. The objectives of the proposed project are to: • restore drainage to the channel north of SW 23rd Street and correct flooding of the property north of the SW 23rd Street access road and east of Lind Avenue; • improve surface water conveyance from the SW 23rd Street channel into Springbrook Creek; • reduce maintenance problems associated with the undersized culvert under the Olympic Pipeline Crossing and increasing the flood protection to Lind Avenue, East Valley Road, and other tributary areas; • improve the potential for fish passage from Springbrook Creek to the SW 23rd Street channel, add habitat for fish that is currently not accessible, and provide off-channel habitat during high Springbrook Creek flows. The proposed activity consists of the 5 elements described below. The project would occur in existing channels along SW 23rd Street near Lind Avenue (see Figure 3). (1) Replace the existing 18 inch culverts under the Olympic Pipeline crossing of the SW 23rd Street channel with a new, large pre-cast concrete box culvert. The Olympic Pipeline Company petroleum product lines are located west of Lind Avenue. The pipelines are located in an upland berm separating the pool at the downstream outlet of the twin 9-by 14-foot culverts from the SW 23rd Street Channel. The existing 18-inch culverts connecting these two wetland areas are currently undersized and cause high upstream water surface elevations, contributing to the flooding problems along East Valley Road. The culverts are also subject to frequent plugging, allowing sedimentation and vegetation debris to fill in and choke the upstream cha lnel. The inside dimensions of the new box culvert will be 10 feet wide, 4 feet high and 80 feet long. The new box culvert is designed for the pipelines to remain in their existing location (see Figures 4 and 5). Invert elevation of the box culvert inlet would be 6.6 feet (NAVD) to tie into the existing SW 23rd Street channel; invert elevation of the outlet would be 6.5 feet (NAVD). A channel BECK/WETLANDS 2 12/15/9"hi h q w sc ' Z lw,l$ ax rw-so _\ ! � "; i Yf k . . t , .,...E _, ,..: ... 500, 0 500' 1000' W-21 ; ten. W-31 SCALE .`. f IM.rc M•N A `rr y x r s M r ,` 4y � rl W6 49 , w - W-13Nd :.. W 4ec w-l3ih W-13Nc a, . 4_ . ,W-13Sa_ ' W-13Sb/, dW-13S4 1 W- b :W-f3se W-1 -46d : 5 -9a <. W13e W -0W-7s ; W 13Sh TwF�n�l W 16d. _ -'& 13sj ... . .......... :. w54a 4if :.. - .: ::1�-12a � ?H .. uj. S i : $ .w-u I W-4s Q-w-le • 5EGEND : : <w3 W-32 fI••�• Project Area • y> Wetland \:; i • W-53� f GT/ ,j Mitigation Wetland k — w-48r. ,. W 3 `s i J f-W 48h • ti.(. f-!W-34 ,. W—t � . :. Applicant: City of Renton l �..1-w-52 ` Public Works "a y\s"W-50 Project: Renton SW 23rd Street @ • Drainage Improvements ti 7153-001 06/13/97 Figure 2. Wetlands Within the City of Renton East Side Green River Watershed