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LUA00-091
STATE - - ��.::: tj :j) H'1 /889 • STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washington 98008-5452 • (425) 649-7000 DEVELOPMENT PLANNING August 16, 2000 CITY OF RE.NTON AUG 2 1 2000 RECEIVED Joe Armstrong City of Renton 1055 South Grady Way Renton WA 98055 Dear Mr. Armstrong: Re: City of Renton Permit#LUA 00-091;SM CITY OF RENTON -Applicant Shoreline Substantial Development Permit#2000-NW-40014 The subject Shoreline Management Substantial Development Permit,to complete Phase II extension of Oakesdale Avenue SW between SW 16th to SW 31st Streets, has been filed with this office by the City of Renton on August 1, 2000. The development authorized by the subject permit may NOT begin until the end of the 21-day appeal period, August 22, 2000. 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, likteo j,Q Marcia Geidel Shorelands and Environmental Assistance Program MG:mg SDP.DOC cc: Steven Taylor, City of Renton o ,d I4 >:»<»<<T,IO F SERVICE 3Y>M`AII ING$"="'"»>> > »>>> » < > » > »><> > <>"< . ..... Rom. On the 2 .clay of 1- , 2000, I deposited in the mails of the United States, a sealed envelope containing 5kore.lin.Q St,b 41 i documents. This information was sent to: • Div. p-Grrv'it Name Representing JOB B'IVw,S Q✓i� yip/, (Signature of Sender) STATE OF WASHINGTON ) SS COUNTY OF KING ) I certify that I know or have satisfactory evidence that ,4-,nol'Y ex 04 r a. u u-' signed this instrument and .acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in the instrument. Dated: I I , /bdle Notary Public' and fo the State of Was r gton MARILYN K MCHEFF MARILYN KAN4CFIEFF NOTARY PUBLIC Notary (Print) STATE OF WASHINGTON My appointmen e COMMISSION EXPIRES ,DUNE 292003 je a e. OCAIke_5c1a.& ve �x��vlsio"i (1Phase 17) Project Number: t IAA CO-091; Sdel NOTARY2.DOC 4 . ? CITY F RENTON ..LL Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator July 28, 2000 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-00-091;SM Gentlemen: Enclosed is the Shoreline Substantial Development Permit for the above referenced project. The permit was issued by the City of Renton on July 28, 2000. 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) 430-7219 if you have any questions or need additional information. Sincerely, 4174 ll/�t Steven Taylor,AICP Project Manager Enclosures: Copy of Original Application Site Plan Final Environmental Impact Statement Legal Description cc: Office of Attorney General City of Renton, Transportation Systems City of Renton, Utility Systems Applicant Shnrlina I fr dnn 1055 South Grady Way-Renton,Washington 98055 CITY OF RENTON SHORELINE MANAGEMENT ACT OF 1971 PERMIT FOR SHORELINE MANAGEMENT SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT APPLICATION NO.: LUA 00-091, SM DATE RECEIVED: July 10, 2000 DATE OF PUBLIC NOTICE: July 19, 2000 DATE APPROVED: July 28, 1000 DATE DENIED: NA 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 a permit for construction of Phase II of Oakesdale Avenue SW. This action was taken on the following application: APPLICANT: City of Renton Contact: Joe Armstrong, Transportation Engineer Renton City Hall 1055 South Grady Way Renton,WA 98055 PROJECT: Phase II of the Oakesdale Avenue SW Extension DEVELOPMENT DESCRIPTION: The project is a continuation of the extension of Oakesdale Avenue SW, between SW 16th to SW 31st Streets. All phases of the project were subject to review in the finial Environmental Impact Statement issued in July 1997. Phase II is not within 200 feet of Springbrook Creek but will impact associated wetlands and is therefore subject to the Shorelines Master Program. Phase II will construct a new four lane roadway from SW 27th Street to approximately SW 31st Street. The project will include curb, gutter, sidewalks, bike lanes, street lighting, utilities and wetland mitigation. LEGAL DESCRIPTION: Attached separately to the report. SEC-TWNP-R: Section 25, Township 23N, Range 4E WITHIN SHORELINES OF: Springbrook Creek APPLICABLE MASTER PROGRAM: City of Renton SHSUBDEV.dot City of Renton P/B/PW Department Shoreline Substantial Development Permit Page 2 of 2 The following section/page of the Master Program is applicable to the development: Section Description Page RMC 4-3-090E Regulated Water Bodies Page 3-20 RMC 4-3-0901 Conservancy Environment Pages 3-24 to 3-25 RMC 4-3-090L15 Roads and Railroads Page 3-36 RMC 4-3-090L18f Local Utilities Page 3-39 Development of this project shall be undertaken pursuant to the following terms and conditions: 1. The City shall ensure that the contractor follows best management practices for all construction activities over and adjacent to the Springbrook wetlands. 2. Temporary erosion control measures shall be installed and maintained throughout the construction phase of the project. 3. The applicant shall comply with all mitigation measures detailed in the Oakesdale Avenue SW Extension Phase lb & II Wetland Mitigation Plan approved 6/5/00. 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. 1."1 C 7 g oO Planning/Building/Public Works dministrator ate cc: Attorney General's Office City of Renton, Plan Review (Neil Watts) City of Renton, Surface Water Utility(Ron Straka) Applicant SHSUBDEV.dot ENTRANCO MICHAEL G. YEOMAN OAKESDALE PHASE 2 PROJECT NO.97027-26 March 09, 2000 • EXHIBIT "A" RIGHT-OF-WAY ACQUISITION CITY OF RENTON BOEING PROPERTY An acquisition for roadway purposes over, under and across a portion of Henry A. Meader's Donation Land Claim No. 46, Section 25, Township 23 North, Range 4 Fast, W.M., in King County,Washington described as the following Parcels"A",`B",and"C": Parcel"A": Beginning at the point of intersection of the south line of said Donation Land Claim and the Fast line of Government Lot 10 in the Northeast Quarter of said Section 25; thence westerly along said south line of Henry A. Meader's Donation Land Claim No. 46 to the East line of the Northern Pacific Railway right-of-way;thence North along said right-of-way to the south line of the Bow Lake Pipe Line as conveyed by deed recorded under Recording Number 4131067; thence easterly and northeasterly along said south line of Bow Lake Pipe .Line to a point of intersection with a northerly extension in a straight line of the east line of Government Lot 10; thence southerly along said straight line to the point of beginning. Parcel`B": TOGETHER WITH that portion of Government Lots 10 and 11, of said Section 25 described as follows: Beginning at the intersection of the south line of Henry A. Meader's Donation Land Claim No. 46 and the east line of said Government Lot 10; thence southerly along said east line 255.38 feet; thence westerly on a straight line to a point on the east line of the Northern Pacific Railway Company right-of-way 289.12 feet southerly, as measured along said right-of-way line, from the intersection of said right-of-way line and the south line of said Donation Land Claim; thence northerly along said east line of the Northern Pacific Railway Company right-of-way to the south line of said Donation Land Claim;thence easterly along said south line to the point of beginning. Parcel"C": ALSO TOGETHER WITH that portion of Government Lots 10 and 11 in the Southwest Quarter of the Northeast Quarter and the Southeast Quarter of the Northwest Quarter of said Section 25, lying north of a line parallel and 545.6 feet north, measured along the east line of said Southwest Quarter of the Northeast Quarter, and the intersection of the east-west Quarter line of said Section with the Fast line of the Southwest Quarter of the Northeast Quarter and Fast of the following described line: Beginning at a point on the east-west Quarter line of said Section, 60 feet East, measured at right angles, from the East line of the Burlington Northern right-of-way; thence northerly 1,100 feet parallel to said easterly right-of-way line to a point; thence northwesterly to a point on said easterly right-of-way line distant 289.12 feet south along said easterly right-of-way line from the intersection of Henry A. Meader's Donation Land Claim No. 46 and said easterly right-of-way Page 1 of 2 line of Burlington Northern; EXCEPT that portion described as follows: Beginning at the intersection of the south line of Henry A. Meader's Donation Land Claim No. 46 and the East line of Government Lot 10; thence southerly along said East line a distance of 255.38 feet; thence westerly on a straight line to a point on the east line of the Northern Pacific Railway Company right-of-way 289.12 feet southerly, as measured along said right-of-way line, from the intersection of said.right-of-way line and the south line of said Donation Land Claim;thence northerly along said East line of the Northern Pacific Railway Company right-of-way to the south line of said Donation Land Claim;thence easterly along said south line to the point of beginning. LESS that portion of said Parcels"A", "B", and"C"dedicated as right-of-way for Oakesdale Avenue SW by deed recorded under King County Recording Number 9803250371. Said acquisition more particularly described as follows: (Bearings refer to Washington State Plane, North Zone NAD83 (91) datum translated to project coordinate positions by W.H.Pacific for Oakesdale Avenue SW Phase 1 and 2 as shown on Record of Survey AF#9601029013). BEGINNING at the southeasterly corner of the above described parcel as conveyed to Broadacres, Inc. by deed under King County Recording No. 7504010373; thence North 87°57' 35"West,along the south line of said parcel, a distance of 18.08 feet to the beginning of a 6040.00 foot radius non-tangent curve to the right, the center of which bears North 88°03' 48"Fast 6040.00 feet distant; thence northerly along the arc of said 6040.00 foot radius curve, through a central angle of 02°41' 02",an arc length of 282.92 feet; thence North 89° 15' 10" West a distance of 5.00 feet to the beginning of a 6045.00 foot radius non- tangent curve to the right, the center of which bears South 89° 15' 10" Fast 6045.00 feet distant; thence northerly along the arc of said 6045.00 foot radius curve, through a central angle of 00°30' 24", an arc length of 53.46 feet; thence North 01° 15' 14"East a distance of 402.88 feet to the beginning of a 28.00 foot radius tangent curve to the left; thence westerly along the arc of said 28.00 foot radius curve,through a central angle of 85°54' 34",and arc length of 41.98 feet; thence North 84°39' 20"West a distance of 7.02 feet; thence North 01° 15' 14" Fast a distance of 84.21 feet; thence South 88° 44' 46" Fast a distance of 5.00 feet; thence North 46° 15' 14" Fast a distance of 39.60 feet; thence South 01° 15' 14"West a distance of 114.73 feet;thence South 88°24' 10"East a distance of 29.73 feet to the east line of said parcel;thence South 01°03' 03"West,along said east line,a distance of 765.03 feet to the POINT OF BEGINNING. Containing and area of 24,699 sq. ft., • G. ; . more or less. w �O _ " to: , 0 " 4,1 • z ; ,. / 3 !. a a OA 19e51 ' %, EXPIRES o2 / 19 /02 -- Page 2 of 2 .03 Of 00 l ' NE //4, SEC. 25, TWP 23 N., RGE 4 E., W.M. 5 4 6 I / 2 3 C74 C75 7 40' 40' 45' OAKSDALE AVE I P.O.a /0 9 8 I (CITY OF RENTONI 1 r Ep N SCALE I' - /50' <145' 45' I I I ILL,111 k. CURVE DATA 1 k 1 ARC RADIUS DELTA LENGTH N I C73 6040.00 02°4/'02' 282.92 1 ;1 C74 6045.00 00030124" 53.46 C75 28.00 85054'34" 41.98 1 I i I I TANGENT TABLE # BEARING DISTANCE I N 87°57'35" W /8.08 I I 2 N 89°/5'10' W 5.00 I I I 3 N 0/'1514" E 402.88 I I 4 N 84°39'20" W 7.02 5 N 0I°15'/4" E 84.2/ i 6 S 88°44'46" E 5.00 7 N 46°/5'/4' E 39.60 8 S 0/°/5'/4" W 114.73 C3. }• 9 S 88°24'10' E 29.73 0"ot w,uy 0 /0 S 01°03'03' W 765.03 �, At) r Y 1 NOTE, ° 4LLA THIS MAP DOES NOT REPRESENT A PROPERTY SURVEY AND IS PROVIDED FOR REFERENCE ONLY. 02/ 19/Oo C. ■ NTRANCO PARCEL NO. I2 r/u p wog.[YI..Ycp.ppY 0000580-0016 10900 N.E.een Street 252304-9062 Bellevue.Washington 96004 252309-9002 (425)454-6600 • CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS MEMORANDUM DATE: July 28,2000 TO: Gregg Zimmerman FROM: Steve Taylors SUBJECT: Oakesdale Avenue Extension(Phase II) Attached is the Substantial Development Permit for Phase II of the Oakesdale Avenue Extension. This phase will construct a new four-lane roadway between SW 27th Street and SW 31s` Street. The project will include curb, gutter, sidewalks,bike lanes, street lighting, utilities and substantial wetland mitigation. The proposed project is consistent with the intent of the Shoreline Master Program. Much of the area surrounding this portion of Springbrook Creek is designated Urban due to the amount of industrial and commercial office development occurring here. In fact, it is this development that requires the completion of Oakesdale Avenue as it is a vital link in the regional transportation circulation system. Section 7.15 of the Shoreline Master Program states that primary arterials should be located away from the shoreline areas, except in industrial areas. This road will serve the valley area which is the industrial portion of the City. During the early development phase for this roadway, several alternative were reviewed. None of the alternatives provided the same level of service of benefits that the proposed roadway will provide. Section 7.15.02.D of the Shoreline Master Program states that road locations should be designed to fit the topography so that minimum alteration of existing natural conditions will be necessary. This road was designed with the intent of minimizing the impacts to Springbrook Creek and the associated wetlands. Impacts for the entire project were clearly identified in the EIS prepared in 1997. Phase I, which constructed the bridge over Springbrook Creek and extended the roadway between SW 16th and 27th Streets,was completed in 1999. Please sign the attached Substantial Development Permit and return it to me so that we can forward the permit to the Department of Ecology. Thank you. cc: Jennifer Henning \\CENTRAL\SYS2\DEPTS\PBPW\DIVISION.S\DEVELOP,SER\DEV&PLAN.ING\PROJECTS\00-091.st\GZ MEMO.doc\st -L... ENTRANCO MICHAEL G.YEOMAN OAKESDALE PHASE 2 PROJECT NO. 97027-26 March 09, 2000 EXHIBIT "A" RIGHT-OF-WAY ACQUISITION CITY OF RENTON CITY OWNED PROPERTY An acquisition for roadway purposes over, under and across a portion of Section 25, Township 23 North, Range 4 East, W.M., in King County, Washington, lying westerly and northerly of Burlington Northern Industrial Park Renton II, according to the plat thereof recorded in Volume 111 of Plats,pages 42-44, records of King County,Washington defined as follows: Beginning at the northwest corner of Lot 5, Block 9 of said Burlington Northern Industrial Park Renton No. II; thence North 88°32' 51"West,20 feet to its intersection with the easterly line of the proposed P-I channel; thence North 02° 07' 11" East, 1560 feet, more or less, to its intersection with a line bearing North 87° 57' 39" West from the most northwesterly corner of Longacres Parkway, said point being on the westerly line of Government Lot 9.in the Northeast Quarter of.said Section 25; thence South 87° 57' 39" East, 1624 feet, more or less, to its intersection with the northwesterly corner of the westerly right-of-way line of said Longacres Parkway, said point also being the westerly line of Government Lot 9; thence South 01° 30' 31" West, 1570.12 feet to its intersection with the northerly line of Block 9, said point also being the southeast corner of the Northwest Quarter of the Southeast Quarter of said Section 25; thence North 87°44' 27"West, 1347.99 feet;thence North 88°32' 51"West,275.79 feet to the point of beginning; LESS that portion conveyed to Burlington Northern Railroad Holdings, Inc. by deed under King County Recording NO. 8911170955. TOGETHER WITH that portion of Government Lot 11, and the Southwest Quarter of the Northeast Quarter, and of the Southeast Quarter of the Northwest Quarter, and of the Northeast Quarter of the Southwest Quarter of said Section 25, beginning on the easterly line of Government Lot 10 in said Section, 255.38 feet southerly, as measured along the easterly line • from the southerly line of Henry A.Meader's Donation Land Claim No.46; thence westerly in a straight line to'a point on the easterly line of the easterly line of the Northern Pacific Railroad Company right-of-way at a point 289.12 feet southerly, as measured along said easterly line, from said southerly line of Donation Land Claim and the True Point of Beginning; thence southeasterly to a point on a line parallel with and 60 feet east of said easterly line of the Northern Pacific Railroad Company right-of-way at a point 1100 feet north of the east-west centerline of said Section; thence southerly along said parallel line to a point on the southerly line of a tract conveyed to Broadacres Inc. by deed under King County Recording No. 7504010373, said point being 545.60 feet north of said east-west centerline; thence east along said southerly line to the easterly line of the Southwest Quarter of the Northeast Quarter of said Section to a point 545.60 feet north of said east-west centerline; thence southerly along said Page 1 of 3 easterly line to the northwest corner of Longacres Parkway; thence South 87° 57' 39" West 1624 feet, more or less,to the intersection of northerly extension of the easterly line of the proposed P- 1 Channel, said line being 20 feet, more or less, west of the northwest corner of Lot 5, Block 9 of said Burlington Northern Industrial Park Renton No. II; thence southerly along said extension to a point bearing South 88° 29' 29" East, from a point being measured along the easterly line of said Railroad right-of-way and 2028.44 feet north of the south line of said Section; thence North 88°29' 29' West to the easterly line of said Railroad right-of-way; thence along said easterly line of said Railroad right-of-way to the True Point of Beginning; ALSO TOGETHER WITH that portion of Government Lot 9 and the Southeast Quarter of the Northeast Quarter defined as follows: Beginning at a point 20 feet west and 1254.20 feet south of the northeast corner of said Government Lot 9;thence North 88°24' 48"West 1029.43 feet, more or less, to a point 300 feet easterly of the west line of Government Lot 9;thence South 01°01' 49"West 845.23 feet;thence South 88° 24' 48" East 1032.55 feet, more or less, to a point 20 feet west of the easterly line of said Southeast Quarter; thence North 00°49' 10"Fast 845.19 feet to the Point of Beginning; LESS that portion dedicated for street. ALSO TOGETHER WITH the Southeast Quarter of the Northeast Quarter of said Section; LESS the Fast 20 feet for drainage canal; AND LESS that portion lying within the following: Beginning at a point 20 feet west and 1254.20 feet south of the northeast corner of Government Lot 9; thence North 88° 24' 48" West, 1029.43 feet, more or less,to a point 300 feet easterly of the west line of said Government Lot 9; thence South 01°01' 49"West 845.23 feet; thence South 88°24' 48"Fast 1032.55 feet, more or less, to a point 20 feet west of the easterly line of said Southeast Quarter; thence North 00° 49' 10"Fast 845.19 feet to the Point of Beginning; AND LESS that portion platted as Burlington Northern Industrial Park Renton No. II, according to the plat thereof recorded in Volume 111 of Plats, pages 42 through 44, records of King County,Washington. ALSO TOGETHER WITH Lot 7, Block 7 of said Burlington Northern Industrial Park Renton No.II; ALSO TOGETHER WITH the westerly Half of Burlington Northern Railroad right-of-way adjacent; LESS that portion dedicated as county road; Said acquisition more particularly described as follows: (Bearings refer to Washington State Plane, North Zone NAD83 (91) datum translated to project coordinate positions by WH Pacific for Oakesdale Avenue SW Phase 1 and 2 as shown on Record of Survey AF#9601029013). BEGINNING at the intersection of the east line of the Southwest Quarter of the Northeast Quarter of said Section 25 and the south line of that certain tract conveyed to Broadacres, Inc. by deed under King County Recording No. 7504010373; thence North 01° 03' 03" East, along said west line, a distance of 765.03 feet to the southerly margin of SW 27th Street; thence South 88° 24' 10" East, along said southerly margin,a distance of 88.44 feet to the point of cusp of a 28.00 foot radius non-tangent curve to the left,the center of which bears South 01° 35' 50" West 28.00 feet distant; thence southwesterly along the arc of said 28.00 foot radius curve, through a central angle of 90° 20' 36", an arc length of Page 2 of 3 E ; 44.15 feet;thence South 01° 15' 14"a distance of 400.08 feet to the beginning of a 5955.00 foot radius tangent curve to the left; thence southerly along the arc of said 5955.00 foot radius curve, through a central angle of 00° 30' 24", an arc length of 52.66 feet; thence North 89° 15' 10" West a distance of 5.00 feet to the beginning of a 5960.00 foot radius non-tangent curve to the left, the center of which bears South 89° 15' 10" East 5960.00 feet distant; thence southerly along the arc of said 5960.00 foot radius curve, through a:central angle of 03°43' 20", an arc length of 387.18 feet; thence South 02° 58' 30" East a distance of 8.03 feet to the beginning of a 6040.00 foot radius tangent curve to the right; thence southerly along the arc of said 6040.00 foot radius curve through a central angle of 03° 07' 16", an arc distance of 329.01 feet; thence North 89° 51' 14" West a distance of 80.00 feet to the beginning of a 5960.00 foot radius non-tangent curve to the left, the center of which bears North 89° 51' 14' West 5960.00 feet distant; thence northerly along the arc of said 5960.00 foot radius curve, through a central angle of 03°07' 16", an arc length of 324.65 feet;thence North 02°58' 30" West a distance of 8.03 feet to the beginning of a 6040.00 foot radius tangent curve to the right; thence along the arc of said 6040.00 foot radius curve through a central angle of 01° 02' 18", an arc length of 109.46 feet to the south line of said tract conveyed to Broadacres, Inc. by deed under King County Recording No. 7504010373; thence South 87° 57' 35" East, along said south line,a distance of 18.08 feet to the POINT OF BEGINNING. Containing an area of 80,167 sq.ft.,more or less. wif p 63 , % 4.7 - .11 /1 tI Sf 441tEsTVP, sf0'�A EXPIRES 02 / 19 %OZ • 03//0/49 Page 3 of 3 City of Rer.__.. Department of Planning/Building/Public ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: POLICE COMMENTS DUE: AUGUST 1, 2000 APPLICATION NO: LUA-00-091,SM DATE CIRCULATED: JULY 18,2000 APPLICANT: City of Renton/Transportation (Joe Armstrong) PROJECT MANAGER: Steve Taylor PROJECT TITLE: Oakesdale Ave. SW Extension Phase II WORK ORDER NO: 78714 LOCATION: Oakesdale Avenue SW between SW 27th and 315t Streets SITE AREA: 1250 lineal feet BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: The project is a continuation of the extension of Oakesdale Avenue SW from SW 16th Street to SW 31st Street. Phase II will construct a new 4-lane roadway from SW 27 h Street to approximately SW 31s Street. Phase II includes curb, gutter, sidewalks, bike lanes,street lighting, utilities and wetland mitigation. 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 ba.e,6 l) . 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. —2 t� �� Signature of r Authorized Representative Date Routing Rev.10/93 CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: July 7, 2000 TO: Laureen Nicolay FROM: Joe Armstrong . . Subject: Oakesdale Avenue SW Phase 1B Phase 2 SHORELINE PERMIT I am submitting the 12 copies of the following documents for the Shoreline Permit: 0�1, F� • Permit Applicatiom ToO�c�,� • Project Narrative ✓(/ R,�Af • Hydraulic Project Approval � ��oN%//� • Site Plan ele j ("0, • Cross Section • Drainage Grading, Wetland Grading Plans • JARPA Application that is in process for approval. It was determined that the environmental Check list would not be required as it was a part of the original EIS that covered Oakesdale Avenue SW from SW 16th To SW 31st Street. This statement is included in the project narrative. I am also attaching 2 sets of labels as required. Should you require additional information,please advise. Thank You Attachments H:\DIVISION.S\TRANSPOR.TAT\DESIGN.ENGUARMSTRO\OAKEPH2\MEMOSLPL.DOC - 0°'''': . . NOTICE OF APPLICATION A Master Application has been filed 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-00.091,SM/OAKESDALE AVENUE SW EXTENSION PHASE II PROJECT DESCRIPTION: The project Is a continuation of the extension of Oakesdale Avenue SW from SW 16 Sheet to SW 31°Street.Phase II will construct a new 4-lane roadway from SW 27'Street to approximately SW 31° Street.Phase II includes curb,gutter,sidewalks,bike lanes,skeet lighting,utilities end wetland mitigation. PROJECT LOCATION: Oakesdate Avenue SW between SW 27'and 31"Streets PUBLIC APPROVALS: Shoreline Substantial Development Permit 'Note:Phase 11 Impacts were evaluated as part of the Oakosdalo Avenue SW Environmental Impact Statement(EIS)issued in July,1997. Comments on the above application must be submitted in writing to Mr.Steve Taylor,Project Manager,Development Services Division,1055 South Grady Way,Renton,WA 98055,by 5:00 PM on August 1,2000. If you have questions about this proposal,or wish to be made a party of record and receive additional notification by mail,contact Mr.Taylor at (425)430-7219.Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. IPLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION DATE OF APPLICATION: July 10,2000 NOTICE OF COMPLETE APPLICATION: July 19,2000 DATE OF NOTICE OF APPLICATION: July 19,2000 eym .au' • rr�ilt Q 1i5111 pq r' 11' ,14 ,;® Ren.on \\1 t ;I� �. Begin ' r Project ' Fsd s I ProJcatswaa•s J/, 1 _K nt ((�� e(,. or NOTICE OFAPPDCATtON no MI • CERTIFICATION I, (4r>o D.,i30,40 , hereby certify that 3 copies of the above document were posted by me in 3 • conspicuous places on or nearby , • • the described property on..•rJ ,AA41 II.j zoo() • Signed: % a J _— ATTEST: Subcribed and sworn before me,a Nortary Public,in an the State of Washington residing it ,�,1 ,� , on the '2( `71. day o • ���"/// )))� A urYLbn MA ILYN KAMCHEFF es NOTARY PUBLIC � � STATE OF WASHINGTON COMMISSION EXPIRES JUNE 29, 2003 MARILYN KAIVICHEFF MY APPOINTMENT EXPIRES:6.294)3 CITY OF RENTON MEMORANDUM Date: July 18, 2000 To: Joe Armstrong/Transportation From: Steve Taylor/Development Planning (01/;1/ Subject: Oakesddale Avenue Extension Phase II Project No. LUA-00-091,SM The Development Planning Section of the City of Renton has received the above-referenced application for review. The public comment period will end August 1, 2000. A copy of the Shoreline Substantial Develoment Permit will be forwarded to you when completed. Acceptance .... .......................... . ....::.:::::::::::::::::::::::- :::...::::.;;:;::;:;.i.``<::::::::::2::::>is i::::::::::::::::::::•;;X is j::'$;:j;:; . .......... . . ROPERTY..4WNE ..........................................:..::::::.::..........................................:1:.::::::::............................ :.::::::::::..................PRC�.I.ECT:.::�NFQRMA:; Note::::;>If:there::s,:more:than:;one::legal owners::please;;attach:`an:;add[tionat: notauzed.Master..Appi[catron.fcr..each:owner......; PROJECT OR DEVELOPMENT NAME: NAME: C/ �7�ic—�/J740/2 �GS GJ�G�C �v��ery�LG`�-5'/C� /2� cZ�c� Gel '/' •/; 7©� 4 d 7 ,itTo'/ PROPERTY/PROJECT ADDRESS(S)/LOCATION: ADDRESS: /e3 fsif2� c� L(/11L� 5-GJ 27i-W 5GIJ .3¢ 17/ CITY: ZIP: cJege, KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): TELEPHONE NUMBER: EXISTING LAND USE(S): si � ��43e -'2 o� �Jpeh �jaacc 6rr.���N�6/6 y cvin.n�Nua l T /1�r� S Gf. ''SC' nn � nv L ..........:............................:.......................:. PROPOSED LAND USES:USES: NAME: 7''CGy' -pti es?sy0/2 COMPANY (if applicable): EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: ADDRESS: PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION (if applicable): /V/4 Pk-P�N\�G CITY: ZIP: EXISTING ZONING: �G ®�v�LOP�` F'`E41O� rittt TELEPHONE NUMBER: e'1�® PROPOSED ZONING (if applicable): h ` ``/t//4 fb SITE AREA (SQ. FT.OR ACREAGE): NAME: �n 'j' d li27 -r /i OS� .�GtrG s ;nS /��/lJ G� 6Yl COMPANY(if applicable): PROJECT VALUE-�:/!(oS Sow G (I e� 7�/D ADDRESS: IS THE SITE LOCATED IN THE AQUIFER PROTECTION AREA? /ASSx,� �i )7 A/a CITY: ZIP: • ) (�Q IS THE SITE LOCATED IN ANY OTHER TYPE OF ENVIRONMENTALLY SENSITIVE AREA? y G!/P 74lQs9 a/ -7l dci TELEPHONE NUMBER and E-MAIL ADDRESS: ��®/�` (_.2-5) 43e, -- 73e3 Jar/vs 4-01@6/re .t . 0_5 ::<<::::>LE AL:C3.ESC: ::: ...pin»»:::>;:<:>::>:::::<:::>::>::>::>::>::<:�........... ........................ ...............10 EitTY.. p►ttach..se arate... :.;::::::::>:....»:.......................::..,.:::::;:....................:.,..:......:.........::::::..., .>:< 0`:::::;-: PPLCATI0.Ki.s. :::_:::::::.:.::::.: :>:>::::::::<:;::;>:;::;.::<::»:«:»>::>::»>:.>::>::»::»;>::»:....::::::.........:<:::::......................> .Yi' ... .... 11?l�.....C. 1 f. ..t1t..&FE S . . ........................................................... hk �11 .. ...a . .I..... # ;..: ....................................de:.e.:.:...�..;...'::e;...,..,:;> ::� :»:<:<::>:>:>:>:<:::;:><::<:: :<: :;>::::>:<:>»:::::::>:::::::::::::>::;>::::;:::<::�.�.::::::.::.:.:..::.................... . ............................ ............................ . .: .:... . . ...... ffi..vvil.f... es.......: ......................................................................................................pp..........................Y.p..........................Pry:Y...:.::::�Y...::::::.:.:::::.:::::::._:::::::::.::.::::::.::::::::::::::.:::::.:::::.::::.::::.:;:.:::<.::.:.::.::.:.;:.;:;:.:<.:;.>;.;:.::;.>::. ANNEXATION $ SUBDIVISION: _COMP. PLAN AMENDMENT $ _REZONE $ _ LOT LINE ADJUSTMENT $ _SPECIAL PERMIT $ _ SHORT PLAT $_ _TEMPORARY PERMIT $_ _ _TENTATIVE PLAT $ . _CONDITIONAL USE PERMIT $ _ PRELIMINARY PLAT $ _SITE PLAN APPROVAL $ _ FINAL PLAT $ • _GRADE & FILL PERMIT $ (NO. CU. YDS:• ) PLANNED UNIT DEVELOPMENT: $ _VARIANCE $ (FROM SECTION: ) _ PRELIMINARY _WAIVER $ FINAL _WETLAND PERMIT $_ _ROUTINE VEGETATION MOBILE HOME PARKS: $ MANAGEMENT PERMIT $ _BINDING SITE PLAN $ SHORELINE REVIEWS: _SUBSTANTIAL DEVELOPMENT $ \000P _CONDITIONAL USE $ _VARIANCE $ _ EXEMPTION $No Charge _ ENVIRONMENTAL REVIEW $ REVISION• $ rDA11.r7.:OF . . r1r I,*(Print Name)„roc, ,declare that I am(please check one)_the owner of the property involved in this application,one authorized representative o act for th roperty 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. ATTEST: Subscribed and sworn to before me, a Notary Public,in and for the State of residing at (Name Owner eprese ati ,on the day of 20_ J N ` (Signature of Owner/Repl. entati ) (Signature of Notary Public) :.::::.::....... ...........................................................................................................................................:...:.................................. 9.F..:.:::.4.A::::::::::;.;::::: IVIg:<:<::Titl:<WA<r:< >:::»MiO:.:............. :.:::::::,::::.:::::::::::.::...:::...'YtfAL.:I+EIS :.:.tli:... ::. :.:... .:.::::::::::::::::::::::<'Y'orAL:.PbS`C'AG>=.ioRCutb o.:.::.$::: .: tko:::::::::::::::::::.:::........::::::::::::::.::.....::. ............. MASTERAP.DOC REVISED 03/00 .1 Date: July 6,2000 By: Joe Armstrong, Project Manager Transportation Systems Division Project Narrative: Oakesdale Avenue S.W.Phase 1B &Phase 2 Background The project is located on land adjacent to the Boeing Longacres site, east of I 5 and south of SR-405. The overall project involves the extension of Oakesdale Avenue S.W. south from S.W. 16th Street to S.W. 31st Street. Phase lA of the work designed and constructed a new five lane roadway between S. W. 16th Street and S.W. 19th Street, and an interim three lane roadway between S.W. 19th Street and S.W. 27th Street. This section of new roadway was open to traffic on October 1, 1998. Phase 1A, Phase 1B and Phase 2 was covered in the Environmental Impact Statement of 1997 and included the Phase 2 area(SW 16th Street to SW 31st Phase 1B of the work will widen the three lane section between S.W. 19th Street and S. W. 27th Street to its ultimate five-lane configuration. This work was covered under a previous Corp Permit, Shoreline Permit and Hydraulic Permit. The Environmental Impact Statement covered all alternative designs from SW 16th Street to SW 31st Street for Phase 1A, Phase 1B and Phase 2. This is shown in the project description Section 1.2. Therefore there is no SEPA check list require in that this was include as part of the EIS. Phase 2 of the project will design and construct a new four lane roadway from S.W. 27th Street to approximately S.W. 31st Street(Station. 2+50 to Station 15+20). Upon completion of Phase 2 construction, Oakesdale Avenue will complete the north-south transportation grid within the City of Renton. Phase 2 will include 1250 L.F. of asphalt concrete roadway complete with gravel borrow fill, curb, gutter, sidewalks,bike lane,retaining wall, drainage, water line, street lighting, signal, PSE gas line, future PSE power future communication, channelization and wetland mitigation. 1 H:\DI VISION.S\TRANSPOR.TAT\DESIGN.ENGUARMSTRO\OAKEPH2Wrognar.doc The project is located west of the Spring brook Creek. Project runoff is tributary to Springbrook Creek and its adjoining wetlands, which flow to the Duwamish River before entering Puget Sound at Elliot Bay. The Phase 2 project will increase the impervious area from narrow, paved maintenance road to an urban arterial. The proposed road travels through a wetland area on level terrain. ROW There are two right of way acquisitions needed for this project, Boeing Company on the west and City of Renton on the east. The properties have been appraised and agreements have been reached for final acquisition. Construction Project bids July 5, 2000 Notice to Proceed August 15, 2000 Completion March 2001 Work will done during day time hours as specified in the contract Hauling will accomplished via current roadway system from borrow pits to the site. Dust control will be minimized using water trucks during hauling and compacting operations. Contractor will supply traffic control plan in accordance with MUTCD. Documentation Complete JARPA(copy attached) in progress Hydraulic Approval Drainage Report Project Definition Report 100% Plans & Specifications Geotechnical Report 2 HADI VISION.SiTRANSPOR.TATIDESIGN.ENGUARMSTROIOAKEPH2Trognar.doc HYD .ULIC PROJECT APPROVAL State of Washington j flinhugta+r Wd 2CW 75.20.100 or RCW 75.20.108 Department of Fish and Wildlife !� FIEE mid Region 4 Office 16018 Mill Creek Boulevard LIFE RECEIVED Mill Creek,Washington 98012 DATE OF ISSUE: May 29,2000 JUN 0 1 2000 LOG NUMBER: 00-E3992-01 CITY OF RENTON UTILITY SYSTEMS PERMITTEE AUTHORIZED AGENT OR CONTRACTOR City of Renton Kato&Warren ATTENTION: Allen Quynn ATTENTION: Bryce Ecklein 1055 South Grady Way 2003 Western Avenue, Suite 555 Renton Washington 98055 Seattle,Washington 98121 (425)430-7303 Fax: (425)430-7376 • PROJECT DESCRIPTION: Install Permanent Culvert PROJECT LOCATION: Oakesdale Ave Southwest south of Southwest 27th Street # WRIA WATER BODY TRIBUTARY TO 1/4 SEC. SEC. TOWNSHIP RANGE COUNTY 1 09.0005 Unnamed Spring Brook Creek SW 24,25 23 North 04 East King NOTE: This culvert is proposed for installation in a location where fish passage is not a concern. PROVISIONS 1. TIMING LIMITATIONS: The project may begin June 1,2000 and shall be completed by October 1,2000. 2. NOTIFICATION REQUIREMENT: The permittee or contractor shall notify the Area Habitat Biologist(AHB)listed below of the project start date. Notification shall be received by the AHB at least three working days prior to the start of construction activities. The notification shall include the permittee's name,project location,starting date for work,and the control number for this Hydraulic Project Approval. 3. Work shall be accomplished per plans and specifications entitled,"Oakesda le Avenue SW Extension Phase 1B&2 -SW 31'Street to SW 19th St,Drainage Plan and Profile"dated March,2000,and submitted to the Washington Department of Fish and Wildlife,except as modified by this Hydraulic Project Approval. These plans reflect design criteria per Chapter 220-110 WAC. These plans reflect mitigation procedures to significantly reduce or eliminate impacts to fish resources. A copy of these plans shall be available on site during construction. 4. Fill associated with the culvert installation shall be protected from erosion to the 100-year peak flow. 5. The culvert shall be installed and maintained to avoid inlet scouring and to prevent erosion of stream banks downstream of the project. 6. The culvert shall be installed in the dry or in isolation from the stream flow by the installation of a bypass flume or culvert,or by pumping the stream flow around the work area. 7. Disturbance of the streambed and banks shall be limited to that necessary to place the culvert and any required channel modification associated with it. Affected streambed and bank areas outside the culvert and associated fill shall be restored to preproject configuration following installation of the culvert. Within one year of project Page 1 of 4 . . _\ HYD:E ULIC PROJECT APPROVAL_ State of Washington Washington r� ` 1� of 2CW 75.20.100 or RCW 75.20.108 Department of Fish and Wildlife FISH and Region 4 Office 16018 Mill Creek Boulevard �� WILDLIFE Mill Creek,Washington 98012 DATE OF ISSUE: May 29, 2000 LOG NUMBER: 00-E3992-01 completion,the banks shall be revegetated as shown in the landscape plan and maintained as necessary for three years to ensure 80 percent survival. 8. A sandbag revetment or similar device shall be installed at the bypass inlet to divert the entire flow through the bypass. 9. A sandbag revetment or similar device shall be installed at the downstream end of the bypass to prevent backwater from entering the work area. 10. The bypass shall be of sufficient size to pass all flows and debris for the duration of the project. 11. Prior to releasing the water flow to the project area,all bank protection or armoring shall be completed. 12. Upon completion of the project,all material used in the temporary bypass shall be removed from the site and the site returned to preproject or improved conditions. 13. If at any time,as a result of project activities,fish are observed in distress,a fish kill occurs,or water quality problems develop(including equipment leaks or spills),operations shall cease and the Washington Department of Fish and Wildlife at(360)534-8233 and Washington Department of Ecology at(425)649-7015 shall be contacted immediately. Work shall not resume until further approval is given by the Washington Department of Fish and Wildlife. 14. Erosion control methods shall be used to prevent silt-laden water from entering the stream. These may include, but are not limited to, straw bales, filter fabric,temporary sediment ponds,check dams of pea gravel-filled burlap bags or other material,and/or immediate mulching of exposed areas. 15. Wastewater from project activities and water removed from within the work area shall be routed to an area landward of the ordinary high water line to allow removal of fine sediment and other contaminants prior to being discharged to the stream. 16. All waste material such as construction debris,silt,excess dirt or overburden resulting from this project shall be deposited above the limits of flood water in an approved upland disposal site. 17. Extreme care shall be taken to ensure that no petroleum products,hydraulic fluid,fresh cement, sediments, sediment- laden water,chemicals,or any other toxic or deleterious materials are allowed to enter or leach into the stream. 18. The stormwater outfalls at the point of the discharge shall be armored to prevent scouring. 19. Excavation for the placement of the structure or armoring materials shall be isolated from the wetted perimeter. SEPA: EIS by City of Renton,July 1997. APPLICATION ACCEPTED: February 3,2000 ENFORCEMENT OFFICER: Boone 030 [P3] Page 2 of 4 HYDI JLIC PROJECT APPROVAL: State of Washington resprontaitni ol 2CW 75.20.100 or RCW 75.20.108 Department of Fish and Wildlife ` gliftAqqk '‘b. Region 4 Office FISH cad 16018 Mill Creek Boulevard �] Mill Creek,Washington 98012 DATE OF ISSUE: May 29,2000 LOG NUMBER: 00-E3992-01 Philip Schneider (425)649-7015 40a)..4 for Director Area Habitat Biologist WDFW GENERAL PROVISIONS This Hydraulic Project Approval(HPA)pertains only to the provisions of the Fisheries Code(RCW 75.20). Additional authorization from other public agencies may be necessary for this project. This HPA shall be available on the job site at all times and all its provisions followed by the permittee and operator(s)performing the work. This HPA does not authorize trespass. The person(s)to whom this HPA is issued may be held liable for any loss or damage to fish life or fish habitat which results from failure to comply with the provisions of this HPA. Failure to comply with the provisions of this Hydraulic Project Approval could result in a civil penalty of up to one hundred dollars per day or a gross misdemeanor charge,possibly punishable by fine and/or imprisonment. All HPAs issued pursuant to RCW 75.20.100 or 75.20.160 are subject to additional restrictions,conditions or revocation if the Department of Fish and Wildlife determines that new biological or physical information indicates the need for such action. The permittee has the right pursuant to Chapter 34.04 RCW to appeal such decisions. All HPAs issued pursuant to RCW 75.20.103 may be modified by the Department of Fish and Wildlife due to changed conditions after consultation with the permittee: PROVIDED HOWEVER,that such modifications shall be subject to appeal to the Hydraulic Appeals Board established in RCW 75.20.130. APPEALS-GENERAL INFORMATION IF YOU WISH TO APPEAL A DENIAL OF OR CONDITIONS PROVIDED IN A HYDRAULIC PROJECT APPROVAL, THERE ARE INFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE. A. INFORMAL APPEALS(WAC 220-110-340)OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100, 75.20.103,75.20.106,AND 75.20.160: A person.who is aggrieved or adversely affected by the following Department actions may request an informal review of: (A) The denial or issuance of a HPA,or the conditions or provisions made part of a HPA;or (B) An order imposing civil penalties. It is recommended that an aggrieved party contact the Area Habitat Biologist and discuss the concerns. Most problems are resolved at this level,but if not,you may elevate your concerns to his/her supervisor. A request for an INFORMAL REVIEW shall be in WRITING to the Department of Fish and Wildlife,600 Capitol Way North,Olympia,Washington 98501-1091 and shall be RECEIVED by the Department within 30-days of the denial or issuance of a HPA or receipt of an order imposing civil penalties. The 30-day time requirement may be stayed by the Department if negotiations are occurring between the aggrieved party and the Area Habitat Biologist and/or his/her supervisor. The Habitat Protection Services Division Manager or his/her designee shall conduct a review and recommend a decision to the Director or its designee. If you are not satisfied with the results of this informal appeal,a formal appeal may be filed. B. FORMAL APPEALS(WAC 220-110-350)OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.100 OR 75.20.106: Page 3 of 4 HYD:: ULIC PROJECT APPROVAL State of Washington r'e` ' " nod 2CW 75.20.100 or RCW 75.20.108 Department of Fish and Wildlife Region 4 Office Naha Region Mill Creek Boulevard ''44*� ifILDIHR Mill Creek,Washington 98012 DATE OF ISSUE: May 29,2000 LOG NUMBER: 00-E3992-01 A person who is aggrieved or adversely affected by the following Department actions may request an formal review of: (A) The denial or issuance of a HPA,or the conditions or provisions made part of a HPA; (B) An order imposing civil penalties;or (C) Any other"agency action" for which an adjudicative proceeding is required under the Administrative Procedure Act, Chapter 34.05 RCW. A request for a FORMAL APPEAL shall be in WRITING to the Department of Fish and Wildlife,600 Capitol Way North, Olympia,Washington 98501-1091,shall be plainly labeled as"REQUEST FOR FORMAL APPEAL"and shall be RECEIVED DURING OFFICE HOURS by the Department within 30-days of the Department action that is being challenged. The time period for requesting a formal appeal is suspended during consideration of a timely informal appeal. If there has been an informal appeal,the deadline for requesting a formal appeal shall be within 30-days of the date of the Department's written decision in response to the informal appeal. C. FORMAL APPEALS OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 75.20.103 or 75.20.160: A person who is aggrieved or adversely affected by the denial or issuance of a HPA,or the conditions or provisions made part of a HPA may request a formal appeal. The request for FORMAL APPEAL shall be in WRITING to the Hydraulic Appeals Board per WAC 259-04 at Environmental Hearings Office,4224 Sixth Avenue SE,Building Two-Rowe Six,Lacey,Washington 98504;telephone 360/459-6327. D. FAILURE TO APPEAL WITHIN THE REQUIRED TIME PERIODS RESULTS IN FORFEITURE OF ALL APPEAL RIGHTS. IF THERE IS NO TIMELY REQUEST FOR AN APPEAL,THE DEPARTMENT ACTION SHALL BE FINAL AND UNAPPEALABLE. Page 4 of 4 - eil 1 I I 1 /i City of Renton 1 ' 1)., „`,t - - - Wetland 'C' - - - ( 1. - 1'- 1 ti I W Fr -' `\ 1,1 \•, • 11 - 2 y\}, ; Phase 1 I� \ ` Created Wetland (t)p.)� . I• .-�< L `' ( PRIVATE ( a �- �`vI DEVELOPMENT - ♦%%i i BOEING• 1 1�;O `���� ' i OFFICE �rr. PARK t i� �% ; - - - Y'� W1 '�; Excess Enhanced Welland from W _ __ I 11 i %j Phase I; Assigned Co Phase 2 cc 1 i Ui, •*,`11 - Mitigation. (typ.) ! Y! Ic .' i City of Renton ; till - - `� Wetland D' v I `1�/ z l it ,�/r - �i I - ,�SW 27TH sI et— ___s - _. — 1� '! Ri -1- • 1 1I i i: _ . - . . ft. ! I (------- City of Renton / Wetland F' 0000000 ..Jr - - I �f - - - - - - - - I - - - Boeing � ' Proposed Phas II South Marsh' e�' If` Wetland Enhanttemant 'K# Phase II Impact Area I,;II i I 1.Q5 Acre; .. " - ,1 .$ ' ' . . _ . .G. : i J. %;ol; G`s y•.... Cityof Renton I �; City of Renton City of Renton 4: Wetland 'F' :ZZ) Wetland y1' I I Wetland '11' - - - - - - • I: ..! • (o.k.or 12-b)- I I - - . ? I,City of Renton ��• Oakesdole Avenue ��'� Wetland G ill: - Phase II Project Area i _ ;� - - - - - . —. .i z 'IIII 1 I Si I - - I I - - - - ., - - J 1 I� Proposed Phose II , - _�► - _ j Wetland Creation !e j f'• • I I II - - - - - 1.6 Acres - I - . �,�11 - TeExrminu Oakesdole Ave. - y - - - (..1 - ` Y I Terminus LEGEND Existing Wetlands Chi'.- Phase II Proposed Enhanced Wetland 0 , Phase II Impacted Wetlands i Phase I Created Wetland 0 Phase 11 Proposed Created Wetland j Phase I Enhanced Wetland PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: NAVD 1929 AT City of Renton ADJACENT PROPERTY OWNERS: see attached COUNTY King STATE: Washington APPLICATION BY: City of Renton FIGURE 10 DATE: SEPT. 1999 R/W L R/W VARIES 40'-45' VARIES 40'-45' --6.5' 5' 11' 11' 11' 11' 5' 6.5'-- BIKE BIKE LANE LANE l I 0il9A1 O O , 2:1 0R F.. FLATTERS i 11 EXISTING J GRADE ����- -��.. ��� �� 2'ASPHALT CONCRETE PAVEMENT, CLASS A il �' TYP. 4''CEMENT ��.\_ /� ` 6'ASPHALT CONCRETE PAVEMENT, CLASS E CONCRETE SIDEWALK __ 4'CRUSHED SURFACING MUM TOPMU - ~___ -- TYP. CEMENT CONCRETE CURB &GUTTER GRAVEL BORROW FILL USE RETAINING WALL EXISTING GRADE . C 11 to 4-LANE ROADWAY - t W/BIKE LANES AND SIDEWALKS 0 STA. 2+50 TO STA.15+20cli 14310444 sa z I- o OAKESDALE AVE SW EXTENSION a �'j'Q� 2009 Western Avenue 555Market Place One FIGURE 1 CITY OF- RENTON a WARREN`$ 20t4�e, W-A 200flit21 10/15/99 I I SHEET I OF 2 � INCORPORATED (200 IIB-4200 8 OAKESDALE AVE. SW EXTENSION-PHASE 18&2 DWG NO.•s .- D.1 �' FOR STORM DRAINAGE PROFILES, SEE DWG. NO. D9 DRAINAGE PLAN AND PROFILE SHEET a { _ _ - - _ STA. 0+50 TO STA. 5+20 17 of 68 • UT i I STORM DRAINAGE NOTES: z 0) i CB TYPE 1 w/ _ �` ��� WETLAND-BOUNDARY O_^ '�-- �- 1 1. ALL LABELED PIPE LENGTHS ARE MEASURED IN THE w OPEN CURB FACE FRAME do GRATE _� '-CITY OF RENTON N 3 _� i STA FRAME 26.0' LT. - -rs 1 HORIZONTAL PLANE BETWEEN CENTERS OF STRUCTURES, O �-�_ �WQLAND=G_(5.4b --w to R_ N u t RIM 15.83 � __ ` )��------_-- ROUNDED TO THE NEAREST FOOT. LABELED PIPE SLOPES ^iV 07.E 1:::_................: -` WERE COMPUTED USING THESE LENGTHS. ACTUAL PIPE LENGTHS X p �- I (FIELD ADJUST) NY `` �-------------------�_ ' ' ----- ----- _ w~ a I.E. (OUT) E 12.63 �; �� _ �;� __ -s S. / ��-� , - - CONTRACTOROPR OR TO CONSTRUCTION.SLOPES SHALL BE UTED BY THE 3 In 1l Q , ,-Es( ri -� N �_. / \ _�. ( �' ��=^-ce-arr�s ,I _. - 1 07 Z I- ; Ewa,=-°Z �/ . , , . '�._ -J 2. PIPES LABELED LCPE SHALL BE LINED CORRUGATED- W 1.... Q p ' x�Acw'-,; �_� \ •/ // t'f ' ; EW PSE UTILITY aS \ ----t- _ _ m - . \ POLYETHYLENE STORM SEWER PIPE. $eg= Z ems:cam; _- - O g, Z _ % Fa-«s, - -- 3. PIPES LABELED DI SHALL BE DUCTILE IRON STORM SEWER PIPE. li Z N a -' t+_^mac SS --------- ---- -. / :NY,-z__--- _ /CfV� _ �- _ - - _ -_ - C\t Q W s /_ s _y . �•_ 4. STATION AND OFFSET CALLOUTS FOR AREA INLETS AND Ill ¢ i E "`-• - - -C8 �- , , �9 _--�)Q OTHERWI CATCH BASINS NOTED. E FOR CENTER OF STRUCTURE, UNLESS �xE? • gm:a Q N Z ! \ / •,STA 4+00, 26 3' LT. ` \ 52LF 12'0 LCP ; • l N Q N 1+00 ��� / / \` RIM i6 65 O O.SOOX. // \ IE-' S. UNLESS OTHERWISE NOTED, ALL CATCH BASINS SHALL HAVE OE le m 0 01.2_9'46_E 3+00 �• n�.0 2+00 / I.E. (OUT) E 13.45, 4 1 5+00 LOCKING STANDARD GRATES. v r_,X�- � ^'x?w+c� ' -�.z 6. ALTERNATE PIPE MATERIALS MAY BE ALLOWED SUBJECT TO I �c1 .-^- 'RCS P'- Q _ I CB TYPE 2 - 60'0 W \ ( / 0 N SQ:r., \ f= L„b„, ‘ ( / • L • ENGINEER'S WRITTEN APPROVAL '- _ r6 : �7SPILL CONTROL OIL/WATER SEPARATOR TEE NEW WATER tn `� y�: ` LL_ i 54 12'0 LCPE ; •�58c" I "1-1 v Of REMOVE B TYPE 1 / „EX. SDMH;• Yv:9"(Ni-7.6) \\ ; --STA-2+545.g2�$.1' R� O 0.\�a'•s-S -� STA 4+OOC26RT, �.`- �.� 1`�` PLUG do ABANDON EX. PIPES e �,ra ts)-e.s. I �. Y ` \ V s �i r<ct Mr l ! / ;! / _�0 mm W Fr . `--^�•�:_.-. _ • �M/ ,i nr.SS FWD .(1 Nv r24;tsi.4. /1 -_ - =' ., _ 00 3'Q �''. SIRUC:LRI/aa7W-..0 ♦o O , _�_ {t >r F�jj" u _ - v-. 6aws5 CA?.,.0 rw \ y = -:"--------/;---- si , cucvur(aJrcavc: I F-r ate I f�w r6.t• ra•Or M \ J _ ' oti / '� T ` \ _ a'Cr.r- . av�T(s)-rZre r �..,W a N scs_..rc ;,N 49LF 12 0 LCPE �1 / S 1 P? A. wif s•cs,-se.o a."- '157 O 2612R c'1111111111 i ALLr �QUARRY SPA[L�P�► rs ` ��' \\\, `� / `I.E. 12.18 1 WATER DUALITY POND GEOMETRY TABLE 'o • I L=8', IIV=7', D= ` Z�� -. t� ® • t 13UARRY SPALL PAD, 1 POND TOP SURFACE I ` �� �� iL�B', W=7�5', 0�1' 4 I POINT STATION OFFSET s WATER DUALITY POND TOP OF DEAD STO���`� �p11 P10 1 18 0 LCPE O 1.000% Pt 2+39.0 49.2' RT. j �` \ P2 3+39.0 49.3' RT. g,,�I, VOLUME PROVIDED = 2222 C.F. ', CB TYPE 2 -.48-0 W/ SOLID COVERP3 3+74.859.6' RT. VOLUME REQUIRED = 1317 C.F. ' (�� \ '�' 4+15, 380' RT. W P4 3+68.1 70.3' RT. TOP OF DEAD STORAGE AREA = 1564 S.F. RI 7.00 \ PS 3+56.4 72.7' RT. I ' TOP OF DEAD STORAGE EL = 12.5 _ I E. 18'0 IN) S 7.10 P6 3+29.4 72.4' RT. BOTiOBOTTOM M OF OF DEAD STORAGE EL.STORAGE AREA = 1= 9 50 S.F. I --) \ ��'' JZ (OUT) NE 12.31 P7 3+07.5 68.4' RT. 1,9 �� �' FOR+ I POND BOTTOM EL =8.50 I `WEILIWDOUND GRASS LINED SPILLWAY` \ P8 2+92.0 60.4' RT. liX ' slta+n ui s • I WITH 3:1 MIN. SIDE SLOPES & 1' SEDIMENT STORAGE DEPTH COY OFRENiO 11- - I.E. (AT POND) 12.50 APO Se�,e, ♦. 1 GRASS UNED SPILLWAY �¢ REFER TO ORIGINAL SEE WATER QUALITY POND GEOMETRY TABLE WETLAND F (12a) TRAPEZOIDAL CHANNEL POINT STATION OFFSET to mu-sae Ct1 aw.= BOTTOM OF DEAD STORAGE BOTTOM WIDTH = 6' P9 4+09.7 78.8' RT. ti noanteHrs n+am f 3:1 MIN. SIDE SLOPE POND MAINTENANCE ACCESS ROAD. SEE DWG. C10 FOR DETAILS. P10 4+01.7 82.1' RT. waCH 200o i MATCH GRADE AT WETLAND BOUNDARY �� �� P 11 3+91.1 82.3' RT. acl ii I. 1 [ 120-vC: ::w.o NOTE: • STA: 2+50.00 ; -z • i-:•"1. N:: CZ o_, •- re •. as • -a .' -• BEGIN::SECTION---• ad v r N.4,.,.H i?.-Q.• ; _: 'Nd..,$-.ej 511* n ./C'?:y�.'- . - 25•. THE FEMA MAP IWPTH OUOT IMPROVEMENTS.OD PLAIN IOFF 5 n m .: PAVING:SECTION n :: W - • •- +. 'd . MATCH:EXISTING:::: :+ spa`-O ti:a O N�a.o r.,:o..-�.. ro : N'-•-N.. 'r y-r $ - -r - •: APPROX::EL':1&3+1: N 'D-1:.-.( ,- -y W N N.-o 6'r;3 'r �� FUTURE IMPROVEMENTS BASED ON THE MODEL •-, .c. •v4 w L-.. .O'O..4.- r�.-fw .c�i c�'i r � �3avn �3 �� 'c�'i v:tO�'O. ►. - :. WOULD BE EL.12.90. 20 �i 'W, ?::-a'i+tri 3K Z.�.7�t �M PRQFIL�•G � .� 20: : - • .a 'Wfi�QWQ ..N-... .�Q�.. .. t7(n�WW i•.... -:ma K r a su W'W WW .... ... ......... ..... ... ... ..... ......... ....... •e� :J \` 15:: ::: ::....... .......:: :::.::... :::.::::: ::::::... :...::.. ::T 1 `t46 t :t2� •L 0569%-- . . - ... .I _ • • • . I -.- _ . ... ... . •. ......... ..... . •.. . ... U rtC•c+e? c ss.... _ 1 ;�.'u:.?Q "?JP:SHU1/ti-CN'v) 1 - - 10 p : :: :: .... . . . . .. i j :.9?-sHowN-Ca4LY) _ -. .. .. .... ... .. .. EXISTING:GROUND. • - - - - - - - - - - -.- - - i - - I_ .- - ._._.�..-.- . ..L.-.- - -.� -.-.- - - __.-.--.-. - -._ - _ .. :: . ..... .. ..... :. • .;. .. ... . .. . .. • 0:. ... ...... .. . . .. .... . . .. ..• •••••• •. . N.O. ..to.� t.1.N •: 6V•N. ::�.co •..:N•^ a 6, : m.� •.. al.co: .m tA.. Gn Y ,n� m.O.: all .. .C:g :: ..:to:S.. .co-ra •: .. _. ... .. . - .•...a. . ..,7. • .:n: . .17 • .r7• *' Lo.. -.'o .. �.4.. :�.Q,: .0.:Y. ..O•trt ~,'O * fD O '� to. . '0 . ' '°:rc' 'O:to ' ' 'Gt0 •:. O'fo:: •..' '0•O : •'-@•to - :tp to :.^:co - : 1`to .•'N•o • r^ to ri for ..• ot.,„: .0 .:G Q•: . 1+00 1+40 ' - 1+:80 24:20:: . . • -2+60 :: :•-• .. - 3+00•-- • •: :- 3+40 . --- - 3+80 - • 4+20 : . - -4+60 • : ••. 54:00 . • -• . • • KATOB s00M ,,m,,al. • WARRENC S eN. MA cos}: ,i MCORP:MUM (2O)M.-.A00 "':.H pAarle a,Q, ,„ I•M,,,, OAKESD'ALE AVENUE S.W. EXTENSION , 2000 t. ' t•_20 RENTON arla CITY OF PHASE 1B 8c 2 - SW 31ST ST. TO SW 19TH ST. KS amm I °"°' I , DATUM ' DRAINAGE PLAN AND PROFILE `"� D2 REW �+4IEN.. Planning/Building/Public Works Dept, pp NO. REVISION BY DATE APPR wc�A�m ` Gregg Zimmerman P.E., Administrotor STA. 5+20 TO STA. 9+80 'tan 18 68 • �' N "'0 (it MATCH LINE STA. 5+20 I j 1/.�14 1. ....I ..., I `� , IIpp -- - 1 I 11 t F 1 0 ; to. f iE F .F ! I III ..... N . ,,�" i�1 illP Ei i In ; F F •I PVI:STA.:5.+50: $ F F F I I ' :ELEV;:18:15:• . F 4 + 10.87 :.. : ..I. . . 'I... ... .. ... ..... ..... 2 : E E F ^ c0 17.667 • {' . I _ F F ,f . I • F F F Z ! { . (.. l I 0 I; I I F 10.85 I I . .... F F .tn MI . . 2 I 1. 17.659 ' ato , F 1F l . F 99'49+5 .* Od iE 'lit i I P }} 10:85 I F F o_ pi 0n2*. -61`!.$ 8 P. l 0 .. I I m F F It • I ; 10.86 F ! i • E F '0 i 1� N zo+ 10.87 I • F E ► ,c 1 s p17.697 0 1,, F F . :: . '.. I EVCS::6 .50 1 >m I Il_... I . o .EVCE;:17;65 E F '1Is .4 - I I Ih:ty.tb0 s .. .. I .. .. . .. E r � • cl- { t051 ) I. I I !0 LI F , I i rr ' I J F F I F ` I fr h ; vO / :CB TYRE:1 .. _ F F F � 1 174b0 I 4 II STA 7+00; 26:3.:RT..., I F !`41 I • .._. o I ' • ..... ••• RIM 16:88. 1 F E A ' :I :... I:E: (IN):W 111:41 0 Av, ^R m� :: ::: I:Er (OUT)•N•14:41 ( tA N. F 0 o' 10.52• I F FL.!71 IJ1Y.3b0 . • I I I mv m . xl 8131O -cop F F ' F ' OE• IX 1 ' O I Ib N F toes: l ! E 1 ! I AOE It. ,..1. 1X b0 12 I Q r F rn F B $1 7450 0 F E F E . .o :BVCE. 17.15 . : F I ! '0o +.10.92 Iz .. E F i -]rn t7.tb2 o .. p O I N r- 0 . I I. II:' . F F IF / ^ 1 F m :: E 1 F / II IOI 0. ty ® I E ! E /j F z CO' : I : • 0 4 • 1 . • ..... G I t F F • DI ! Hg; :q • ao� 16.�i2 `° ! S _ I {:'.. $ •C TYPE 1, I N W :OPEN :CURB FACE : 1. �, iL.1,: '.' I E FRAME:& GRATE 1 o I F t0:9¢: . . : STA:8+5o.:265' R7. 0 m u F 18.92 I. t:M 'i6:S6 I rn " �:: I LE (IN) W.a426 ( N - - j ' n ; F F : . I.E. (IN) S: 1:4.26 0 A rn I.E (OUT) N 14.26 X • 1 .▪ 10:95 .Si :' .. E E FJii- Io:40 ... N :r, I. 0• put STA. 5+50: $ F ) LIE F • • ELEV;:16. 5:: F/ I Y I I I • h 1 F ! F !i I I I C 91+1 : ''h.:` I j I .'ro o j F °° t 9 { 1 F E 0}0'16.92 ; I F E I m N m • { . g� • :Ci:l C ! F / F 2 1 I U O 10 05. . ... :I . :.;..?N ... . .1 V\ 0 I I N ri qq Z E 111 ( I ! '- f� F E E ' D _ f 16.�62. 1 I (,lI • I c), , I'(. I I F Io • F E ; ! c. 1 IF I, •. I 0 try F E F ' I rNo':1'7b 2 • 1' 1 . • I 3b i F IE0* ' F F liqi 11.0 I.::: F I Ai 0 F 17.102 { .: :I F E / F j.I'f . 11 ZIo I• O :..: .1 ::I EVCS::9}„'rj0 F F / 7 ' I O z I 2 G) F F .:1:• �' • / F ( z0 III I O ro ' . . �.. :I. , • EVCE;:17;,15 /- -- I i I o - F t 11 4. . . ... ....... . . F F 1 / o'�Y.00 1 • I.. y ► III ' r z .1 0 5. r Z � 1 I _ F I / _3._-liI h I 4 . .y... ri- I.1 0 0 ' t" : .. . o. :at 0.. .... n t 4 MATCH LINE STA. 9+80 o 1 h7 4H U) Oro DZ . NC - D m P4H ► r -C ls *1 a li7 x 70 N toyH8 -I r, CSC 0Z rr' � D Z O0 � D ° °z Ho�y- y coxes . I.1 Y + �0 u) Mz4 Co � rn r 4 co 0 o r=,1 0, '1NZ . . 0) P Co - $ etO �- OAKESOALE AVE. SW EXTENSION-PHASE 18&2 DWG D3 0 iin DRAINAGE PLAN AND PROFILE II p 1 g FOR STORM DRAINAGE PROFILES, SEE DWG. NO. D9 & 010 STA. 9+80 TO STA. 14+20 SHEET N - r N 19OF68 i STA 10+14.5. 50' LT _ - ri .- CULVERT INLET,. .. - - - - , CONSTRUCTION NOTE: - - LEz co :.0.04 O STA 10+21.5, 50' LT �•' . THE CITY STANDARD PLAN 8063 (PIPE COMPACTION DESIGNS - O CULVERT INLET W AND BACKFILL) IS MODIFIED FOR THIS CULVERT. THE —Z N - CV y j, ... - % / GRAVEL BACKFILL FOR PIPE BEDDING BELOW THE CULVERT w J.E. 10.04- i IS INCREASED FROM 0.65' TO 1.00'. THE CONTRACTOR w - - QUARRY SPALL PADS 1 �i�: SHALL FOLLOW SUBGRADE PREPARATION (SECTION 13.1.1) H (2 PLACES) 1 / .. .. ' AND CONSTRUCTION (SECTION 13.1.2) RECOMMENDATIONS v1 Q L=12;W=&. =1� - = / WETLAND BOUNDARY / OUTLINED IN THE FINAL PROJECT GEOTECHNICAL REPORT vi F Q N I,, OFFSET WIDTH 'HIV' TO OBTAIN BOEING /- .�' BY SHANNON do WILSON. INC- I w to N 4i 0'''o c)�. . ,�)_• �,-E TOTAL WIDTH = 16� SOUTH MARSH 1 _g 1 y(E :-� Z M1 g I- 1 �M,,.., ,.R%A,1 vrRct PT:MC - 1 A a o -COVE : NIP'? 1 �_ . — - -� 1+I + F- RT F F F 41 J Q :. 6'_OTCONC© — -:5- — — -:5�' ' ���me�E p N Z Q Q 1 — 0 0. 27 ; 1 • Q aE w .07 CO I '- NEW PS UTILITY _ __ NEW PSE UiiLITY- %1C�1 �� m QI - -5�8CF`36'o-CON 1 :ca +�+ao ss s STA 13+.00_32.3LT- CB TYPE 1 s— - - I �` �� w ( 0 727% RIM 16.76 - -� '~ < d1 rR TYPE 1 0 4-T f _ = E' — , ----`-------- �fr�= T_-- =1s=O ate- S-Lt` E-L-S-_ 1.4 a Un�31-W- RIM-4b-88 11'.fl0 -t .S' �►V-sw.— '� -----13- . _JiF L>, 17,-" }1 (OU13b — -Y --v--�_-----'S-----�_ - , wNO s 'J 7 4� .\- - T- - - Is n$ o A -53LF / '-.\ L: 65LF 12'0 DI `� \ % ( W Z `:� al 12 0 DI ' WETLAND BOUNDARY 0 0.508% 1. . Q p 1,E 00.500% /! i55LN(t-TA ABOVE GRCA NO) CITY OF RENTON I 14 Q F1��1I CULVERT;:colrcl , mu-;s.17 Y \ WETLAND �F' (12Gj'T. - - y CB TYPE 1 „�` ! U _ ►L, :NV.8•(Irii('A. MV(N).-258 I Was EU, �j ; ._..X% }�{_�x�\ STA 13+00. 32.3' RT. �` `� / 1 Ix i''" .. `-N. t.°ICJ ,CB TYPE 1 1 �, - / � I 1 -4 `ll a STA 10+00, n I, y / \ V • 10+14.5, 38'RT .. - - WETLAND BOUNDARY ( I ,h I , :i'1' aI' `CULVERT OUTFALL o - - -!STA STA 10+21!5. 38'RT QUARRY SPALL PADS Q W CITY OF\RENTON I , i' I - CULVE)OUTFALL (2 PLACES) �7 - - - - - -ETLAND '" (120) T,y I: \ i i ii,#���. I.E.9.40 4 12', W=8'. D=1' - - - - WETLANI ID!BOUNDARY I� c i s' FOR : \CITYI IFj RENTON NO77:.00.IS i >!�1 I =NATURES • ' W - WETth-D'l'E' '(120) III I - '• a • AID SEALS' ,., A. - -. ` - :�, 1 ' 1 4 REFER TO GRIMM. s L. THE 100YR FLOOD-PLAIN TAKEN OFF - •vuu-szE CONTRACT -• ., 1 $ THE FEMA MAP WITH OUT IMPROVEMENTS, `� MARCH soao�� ��i�L' �! FUTURE IMPROVEMENTS BASED ON THE MODEL ,.��•��g,' WOULD BE EL.12.90. . ar �2�� • i . CC N .O .. ... N o..^AN.!' a , .t0 / ... ... �O tt, --N. .07 -...,..,.. a 5 ad 4Y. CN1.:iC.Y ..:a �.... . �f%: K h,•"..i•^ . m •2 '�om 3:tA.� of a::: .> 17 :: :.: ... �.. ow 3 vf,.� i; w {aG t! to v • _.. cEi c. L1 +:,...: r•, ? _ 0 r0zO ff,_ • oo.- _ PROFILE GRADE Z+ — I.,to D_-•_';- . - Ut710:_ 14. 1� - nri • 303 LF::T2'0:DI:o:0:100% - 15o:LP::12'0.Di-0.0;100% / 15 •n 4 ,.-.._ 1 , _ _ f 1 I. REIAOVEi:E7G 48"0:CULVERT • i i & REP LE hlf-,2-- 6 4--•--- - - - - -•-- -'• - - _ -- .r -- 1Q- - -- '-�I:Ir::Z.`ONLCULVERT. -.�........ ... .- ...... • ; J.. GB-4-JAET Ro OS 10 1,1 EXISTING:GROUND / • .. ... :-.-. -.-.-.-. j~ .._' .. .-._..-.--.._.-_..- �..- ..-, - __ __ - - - - - - - T j - - - - - - - - - - - - - - - - - - -'- .. : .:... .. • 0:...: .: ..... . ...: .:.: . .. .... ....:: .. .. ... .. 0 • • • • ra. . . . .. .:o . o o "'a::. ..:�T: .' o:ao ror. r :.... r ,.,?� :' :NT - a-ao: :o '.:.n.-o. : ,�-o: . :o _•o o:o : rro a-A oA.. .. , . . . . . . . . • A . . .A A • , A: °.O a!7� a!7.. Ss, : .O .:: �-rn .. err, :aYp . adz ° m1 . !`O . elf?, . O1.A . . �O. O. `►A. ..O !.01. ..::A. . ..�... "AO. r7.,6 •.:r .. ^r:... 'r . .. ^r. � . _.r : . �,-: . fir: .:•:fi :•• .'r • ^r• .• �r - : �r -- ^r . ^r :: • 474n :" : �• . *r : .40 • m: . • • • ' . • '. • ' 10+ 0 10+ 0•r• :1 40 14-40 :• + 0 7+70 • . 12+60- • • • •13+00- • •• 13+40 •• 13+80 • •• •• • 14+20 .. • • ' ,'''--, 1 52 OAKESDALE AVE. SW EXTENSION-PHASE 18 & 2 DWG NO. D4 DRAINAGE PLAN AND PROFILE FOR STORM DRAINAGE PROFILES. SEE DWG. NO. 010 =M111.•--- ---3111111/1.."-- . SHEET 11 1 I i i - STA. 1 4+20 TO STA. 1 8+80 20 OF 68 I 01 I ' , : • . „ = 7-CB.TYPE._1i10-OPEN-CURB-71-0 -_.‘,', : .--- •••:.- .- .2-.:-...,:c ...:FACE FRAME & GRATE • . 0- 3''''"x -STA 14+47.51, 35.31 LT. 77-0 - '25 7'4,-;: -, RIM 15.75 ii , • • ! i_ rn' iz 00 I.E. (OUT) E 1.,3.73 =zip - ! . ,-.f...3 '''''.1, EX. CB TYPE 1 la ÷ .4(I) I. . 4 ,21',t.,r).,--,2.2 ,...' I- a co ,-/// I; : EX. STA 15+50.0. 37.1' LT. . I x 0 (x • • - La I- (3_ . , T. - 2 ___ ;- . - • 3 RIM 15.67 CC•,C3:-_77. INL:7 1 , / , ADJUST OPEN CURB FACE(LOW ;. FRAME AND , 7,-,..., •7. 7 ; •, CONSTRUCTION NOTES •,--: en -.e , • 4 --;_ - : 0 I- GRATE CB TO GRADE z En • i - c-!k.,, .. .:-., 7yPc 7 _.- --• : '12 , 1 i c- '•,-.7-': I r .to : / FoM ;5.60 _ ,. .,1--:6.49 7f. ', I -NEVI PSE V 0 I 0 INSTALL OPEN CURB FACE FRAME AND GRATE. :4..0 k REMOVE & REPLACE FRAME. REMOVE & RESET 1_11 z n UTILITY i , =.- ^ 1 •:.2 / , • :.:, GRATE. ,..., iiAL> (3- iNi I /- __ ___ - ,, _ . -) iali<cn. L.L.1 + I ...400 ..,,: : 7 . • 4- /---.1 _ ! • •••J 1 - - -x - ._...1 ® REMOVE CATCH BASIN. _ _ _ --1 6 v.!al pE !m 7- - - -.. -::`,Z- •-..-- --..-...:_wr,lipa--- ------ - . .._1-1-._--.--.7.. --- .4.....---- -, -77". -=....-7‘..2-_Y.72.7-.11-•ifUl...'4,1 .../...,...-=,,,,_,.. .,"4,---....._... ...,..........,,...„...,,..-7 . 0 _-.--1 0 • -. - •-•:-• . ; - -........:"'"---fo 6.-..2iiq Lwr .. CP •••m; __.:24,..--) !,./_.......,5:.,z,s,;...:::.• CO • as 11.3 At '1;kc if-- CV 1 '. (1 , ii_<-2, r., • 1 >57E.5, : ,•-• i - az .--...• 1 loco+ :0 ' • ',2'•'ZIP - ; ., . . ! - 6 Li._ ..52 a •; 0 ..- la i 0 i\L,c FuTEN-ILID.TituE7REE<-1 ...-..: ,..4 I-- -0 5.4 -"6‘; :trek0, + •:-.- zi;Irr:.--E-5, ..r.r o i. , (/) /.c 54.4:V/9Q0, 1 .; •-•.. ., _e_ ____ . 1 _ ,____.: 1 ' 1 .t.\14,1 ,c.t7,',...7"i'Vroa # I 4-' '8.59 i RIM 15-90 16+00- 1 i 17+-00-- _ i - , 18+00 ?-• a_ / 11 !--., -- - • ----7, . :•----;11141--;jr-1-58° t40195.114reo ss-0/fESDALt--AVE-S.W. : s s 72'ME ig0 5.5--.--6 9 ! 9 l•-• In j---7,--- .-E,---E .: 'l'i•--_fl- _ _(,__ _ I .-- 7. - " i ,--- -,-,- ., •-: irx1 O..g r=1 I i 73LF 12-0 DI 00 P" -- ; ....,., -- kj1Z ...z ,,,c, z 1 f : EXST .4..TER ; 1 '•1' . •. 0 0 43:F, r-1 I„,_21.-- 1 : ..7--.---.9 - 72-o W/ BAFFLE 1 ,C_,,3%.TY....7401 t 11 IN't 7r."-i.:am • ! i / BOTH RIMS 1 7 __-_- ' - lady ( • co ..) ..i s , , :.,_. s.C.;., .... 4.32 , iM 1- -i-c''\ lee mET140 i'S r `4,,' J.,7r.., 1 ___Nek_HYDRANI__CoNNEUION_o c4 ci°: 0 i -71-i. 7..j. c ,. i p (.1.-p rrs .. • P. .. ;t'----7rj2"P E . I E- 1 I LiqEw WATER Oil X / I/ .7 1•A ! • ... ____... , / 12%1 LOPE .., i 1 ,-. 2"6 LII % -6- ......E C.011•011.1 \ ' ; 1 II CB TYPE 1 - ' E_ _E 7_ EN I i /C4 j 11STA 14+50.0. 37.5' ta. 1 ,Ak, \ ______-------F --•^CM, .v,...--"v"---------------T-C 0 I T c==-------------c . 0 1 1 i 11 ROI.75.73 , P..; • i ' . i I CONNECT TO EX. PIPE i -, ,`E' .;".71 (c., -i-i 1 1 TOP or, ,...„ I , El ,- NV UW."7.61 P 1 I ....ow 2.17:110.902 N411111111k : ,,, I I.E. 11.6C1 I i,---------T------7-,---L_ '\\ i II "• 73_5r - I i' if Or NagklER Earl Cf FM/41 ,OSELEDV* LEV. 18.‘5,1 4 I I e 1 .L I I II 70:. Nor C9 • ! / I ''..----------------------1------------------L---------------.------------' '--- _AD li --________ c? UST CB TO GRADE k.,., .-, \ 1 69.380.2949,Z 0 .5.4:61.atm, - -ey t I 1 111 I L- !, , 1 I F.• c. 1 I WATER ir."A..IPO .._NO - serrom EL. 9.60 0 0 1.4 41 S Tp:E.0 v El 0 OmYERNFTLsOBOADs EP DL A:TTHEAKEmNoODFFEL ADJUST\CB TO GRADE „ ,-,-, R1 1 i NCGC-5- I \ -__ Cltd , \ ‘ 1 , ....................... _ i 1 ;9. f!1 • Ft:1,R N_../ 0 • 1 I I ' • I ...SIGNATURES•A,• I I lir - 1;:., 1 .:;- I • i N. ..... ____--- ----.:_..._. .••• ..... .: I!li • MO SEALS. % ‘ 4 • •I 41 . 8i I i i ........\ - 7 , •,--,......„...._ .... 2..... . REFER 70 OROPLA • I 11 111 • i i fi FULL-SIZE comma• • DOCIRIENTS 0A7E01, ";i I k \ ... , % 1/ARCH62000 4r • I ., il! I i I i .. '`' "` ;.-. • g - 1 • .........* WOULD BE EL.12.90. A. • • i Ai V i A Hilt : -?:-:A.SE:2:C=4•1817..X77M1• . i - . $'14.ASE IS:CCNSTRUCTKIN: '•-. - . . -.. tar u:•: [ 30. a.- 413 "• Its ..(b.co u3 . (DUI,..4.•--o:••,0 PI ' '• . la cOre.rq•--Pi'/4•-- . 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SW EXTENSION—PHASE ID & 2 DWG W NO. 2p D 1 2 n } L I OPEN CURB FACE FRAME & GRATE 1 I 1 1 • �•OM�:F�0M10 �•�s: DRAINAGE DETAILS pSHEET • • •• •. wow • • •• • SIDEWALK 2U OF 68 61 mi • / / 6.`_l•�. 1 WL•L• opD4.1L•1• ASPHALT a• ._ ■' . 1 • IM • Jamnrn. ; ADJUSTMENT SECTION •• • • •• f /'.•ow (l .•a• '`N wow ` !ff r (LEVELING BRICKS OR A ZO rn ' ..�'►_..� ewe Q- m i .1 f GRADE RINGS OPTIONAL) IIIAV 4' MIN. Fri La a• �1� • OMB_ • WON j 16" MAX 06 . /4: ---.--Ar--- �•-•iet ._ , •• •I Or aril,��p``•>�•_•on.• • W 1 imp#ibliftsiir op! cm PIPE SUPPORT w• Q •• •7s•• •• • • •wiper MIN. 1 ���ill. MSC8 TYPE 2. 60`0 m ^ L+ ki �0 .- • /��4t-• III ���w �Li��4'4' �1 MI�— , S ` �,v O a• �� row • impil �� • I.E. PER PLAN Nip c)Litalli"POP or II gri 3 Z MIN. IN Z N V li) In - ,- E �` a P LAN CX SHEAR GATE WITH CONTROL 12"0 LCP .F U I ROD (PROVIDE HOOK FOR • razz N HANDLE NEAR GRATE v Z— CB TYPE 2, 60"0 PPE to 1' MIN. BEVELED END SECTIONS C.O.R. SP-8046 OPENING) N 2 OPEN CURB FACE`, �I 45o w FRAME do GRATE '�-�. a=a m 'I I-I I- L 12'0 CMP RISER `____ � LADDER/STEPS O I—I 11=III—U: QUARRY SPACES (OPEN ENOS) w -1 1 1-1 11-1 1 1 �� /-• 13. Sialg311111111161. . __):-Ar----- •`. _ _ I— I .'• 2 ••• • • •• • •' NOTE: EXISTING 18" SD -8 =1 I I=I I I-1 I 1=1 I I=1 1 11 III iI I '+ 1����`��� I-1 11=1 CONSTRUCT PER C1TY OF RENTON w z _. _ _ _ _ _ I I I_I I r SECTION A—A EXCEPT STANDARD AS NOTED OTHERWISE.9, of 3� -11 J I • ��Ill,ii�iil -_II IIII.IIII�i1 1i1111- PLAN . >4'z C.DADA NOTE: PLACE CONSTRUCTION • vrZI I... SEE PLANS FOR DIMENSIONS GEOTEXTILE FOR SEPARATION SPILL CONTROL CB TYPE 2 — 60"o 2 6 L. W. AND D. ELEVATION SCALE: N.T.S. D 1 4 11 :i • its QUARRY SPALL PAD 1 - - - + + + + D1 , D3 + 1 SCALE: N.T.S. NOTE: 1 1 1;+ REMOVE EXISTING 18"0 ADS CULVERT 'I' ` i I 1 AT STA 6+64.3, 14.1' LT/34.8' RT. j 1 ,I + + + ly + 1 ili !i _nimi I;i%ii 1 �WALL(WELDED WIRE wALL) 0 •UARRY SPALL PAD 1;=:�i / 1.vi1- b L I _ 0 +L WIDTH'W'•SHOWN �� I. 1-'lll i FOR THREE CULVERTS // 1 ;;j I f y lift'� �� �rM COMBINED V ';I ' i. c •1- • �.1 O J'1 x Ok� O Ai i WALL (WELDED WIRE WALL) 3-36'0 39LF�ONC. CULVERTS , - !� -�= 1�t�0�M1ti1 INLET I.E. 10.03 /�I ' CITY SURVEY CONTROL • , 0�1-r-• ..1-�•1• • .0 57A 13+33, 14' LT. 0. • - 4}�• • STA 13+40, 14' LT. �� .f' R/CAP 9905-1 t: d 11J���� 1_a.ram - •- + /-u- / STA 14+00.00, 19.89' LT. ac •- - •1• - - ` STA 13+47, 14' LT. j a' "UV� - �•� G W , ---;�- — _ _�i%.f,,i,ii',t 2H:IV MAX�SIDE I3 8 iM a PIPE 0 . ii� L - -- •) s Y 1L _ _ _ _ �� p�r�r- �Io�r r- �G 2 a,�,i w aSLOPE D an. O O O -- • • • -1- s 11i 1 i 1 i, • m ab -1�-r r- • WETLAND BOUNDARY > . ,. a I ..0 1• "-�• • 4..0 TWO CULVERTS -} 12+00 , 13+00 �` IIlU \ 14+00 -X. R. .076711111- •s�1 QUARRY SPAILS i ASSUMED HORIZONTAL DATUM. EL.,15.50 L _ j - /� 80.SEUNE BEARING TO BE COMPUTED FROM CITY SURVEY CONTROL POINTS. 1 -. N OP WIDTH " - 'a 1 1t�a-'��1..�i-1-t�c g 1 -�11 • �11 D Ex -- •- - -�-- • - • PIPE WETLAND BOUNDARY 1 --+tS y'�' la,...low �11 - p=�.:�a-a_ 11:eirrar �,= —�- 4u�— 1 ; ; ••,� �t',5> Cr. �;= �1��11� a 11�_1� a 1C ► ,0 �0011_1�.- s.1�11�-��81 ;: 's ems•t��11 = �� . h u— r --- j--- —`—rnv, %,,�ia11 'a , 1 ' PIPE o '����1• -`i1C W =1 .If IBl�l31 =11II�IL--ILL ICI + �� �° �1 ' r -j r+s j .1 > • - 3-36.0 39LF CONC. CULVERTS 141,040 0 �1 \ 1, , t ; _..r; . -a- - • - - • - �. OUTFALI. I.E. 9.35 �,, �� \ p 's ��14.���ta0 .rtewC CITY SURVEY CONTROL STA 13+33, 24.5' RT. ,+`� 1:. 1 . \ �� lob SOW 1p��1�- H/MAG PK 9905-101 STA 13+40, 24.5' RT. 1' : j 1 : cr. - -.- PLACE CONSTRUCTION STA 12+23.16. 5.21' RT. 1; : '; 1 + I 01 Oa ' alild7o f•4.1111!Q GEOTEXTILE FOR SEPARATION - - STA 13+47, 24.5' RT. - 11. I , 1 11 ._ 1 O QUARRY SPALt PAD 1;', ; I = 1 -r 11_ �. '-1=12'. W=23'. 0=1' 1 CO • 0 H NOTE: WIDTH 1H' SHOWN 1 ': FOR PLAN SEE PLANS FOR DIMENSIONS L WAND D. ELEVATION + y FOR THREE,CULVERTS ` -1 ` .1 • �f µD ,` + _ 1 ,i 0 =NATURES ; •\ 1 ':.-'•}, REFER TO ORNIML Z ' CONTRACT-. % DDcL-SQE CONTRACT 1 • wars DATED 1I• � QUARRY SPALL PAD @ WALL OUTFALL 3 WETLAND MITIGATION BERM CULVERT PLAN MARCH 2• SCALE: N.T.S. D3 OAKESDALE AVE. 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' /.• • -_ AGENCY USE ONLY fAgency Reference#: Date Received:_ Circulated by: (local govt.or agency) _ JOINT AQUATIC RESOURCES PERMIT APPLICATION FORM (JARPA) (for use in Washington State) I,fi.s PLEASE TYPE OR PRINT IN BLACK INK c01 ❑ lam applying for a Fish Habitat Enhancement Project per requirements of RCW 75.20.350. You must submit a copy of this completed JARPA application form,and the(Fish Habitat Enhancement JARPA Addition)to your local Government Planning Department and Washington Department of Fish& Wildlife Area Habitat Biologist on the same day. NOTE: LOCAL GOVERNMENTS—You must submit any comments on these projects to WDFW within 15 working day: Based on the instructions provided,I am sending copies of this application to the following: (check all that apply) Local Government for shoreline:® Substantial Development ❑Conditional Use 0 Variance 0 Exemption 0 Revision ' ® Floodplain Management ® Critical Areas Ordinance ❑ Washington Department of Fish and Wildlife for HPA(Submit 3 copies to WDFW Region) ® Washington Department of Ecology for 401 Water Quality Certification Nationwide Permits(to Regional office-Federal Permit Unit) ❑ Washington Department of Natural Resources for Aquatic Resources Use Authorization Notification ® Corps of Engineers for.® Section 404 0 Section 10 permit ❑ Coast Guard for Section 9 Bridge Permit ❑ US Fish&Wildlife Service or National Marine Fisheries Service for Endangered Species Act(ESA)Consultation SECTION A-Use for all permits covered by this application. Be sure to ALSO complete Section C(Signature Block)for all permit applications. 1.APPLICANT City of Renton - MALMO ADDRESS 1055 S.Grady Way,Renton WA 98055 WORKPHONE EMAIL ADDRESS HOME PHONE FAX II (425)430-7303 ' (425)430-7376 Kan agent is acting for the applicant during the permit process,complete N. 2.AUTHORIZED AGENT Bryce Eddein /AAA NAG ADDRESS do Kato&Warren,2003 Western Avenue,Suite 555,Seattle,WA 98121 WORK PHONE E-MAIL ADDRESS HOME PHONE FAX f (206)448-4200 ecidein@ktowm.com - (206)728-5608 3.RELATIONSHIP OF APPLICANT TO PROPERTY:®OWNER 13 PURCHASER D I ggstyr 0 OTHER: 4.NAME,ADDRESS,AND PHONE NUMBER OF PROPERTY OWNER(S),IF OTHER THAN APPLICANT: 5.LOCATION(STREET ADDRESS,INCLUDING CITY.COUNTY AND ZIP CODE.WHERE PROPOSED ACTIVITY EXISTS OR WILL OCCUR) . Oakesdale Avenue SW,vicinity of SW 27tl1 Street to SW 30th Street,Renton WA,(See Figures 1,2&3). LOCALGOVERNMENT Wm1 JURISDICTION(CITY OR 000M1f) City WATERBODY TRIBUTARY OF :'.. WRIA s Unnamed wetlands adjacent to the Springbrook Creek Black River 14 SECTION SECTION TOWNSHIP RANGE GOVERNMENT LOT SHORELINE DESIGNATION S 24&25 23N 4E Urban Environment/Conservancy.Environment' LATITUDE&LONGITUDE IF MOWN: ZONING I SIGNATION - Latitude 47°27'15";Longitude 122°13'36" Commercial Office(CO),Resource Conservation(RC),Industrial-Light(IL) (See Figure 4). TAX PARCEL NO: DNR STREAM TYPE.IF KNOWN See attached list of property owners. Type 1 Adjoining Property Owners & Lessees Allpak Corporation City of Renton 1100 SW 27th Street 200 Mill Avenue South Renton,WA 98055 Renton,WA 98055 (425)227-0400 (425)235-2500 Tax No.252304-9058 Tax No.252304-9019,252304-9004, 125381-0170, 125381-0230 The Boeing Company The Seattle Times Attn: Rick Ford P.O. Box 70 P.O.Box 3707 MS 20-30 Seattle,WA 98111 Seattle,WA 98124-2207 (206)464-2111 (425)477-0094 Tax No. 125381-0180, 125381-0190, Tax No.000580-0018,000580-0016, 125381-0200 252304-9062,000580-0001 King County Drainage District No.1 Seattle Public Utilities Attn:Jack Nelson,Attorney Real Estate Services 601 West Gowe Street Dexter Horton Building Kent,WA 98032 710 2nd Avenue, 10th Floor (253)854-7200 Seattle,WA 98104 Tax No.(not applicable) Tax No.000580-0017 SECTION C-This section MUST be completed for any permit covered by this application._, 20.APPLICATION IS HEREBY MADE FOR A Pt.-""f OR PERMITS TO AUTHORIZE THE ACTIVITIES DESCRIBE -,REIN. I CERTIFY THAT I AM FAMILIAR WITH THE INFORMATION CONTAINED IN THIS APPLICA n ti,,,,,AND THAT TO THE BEST OF MY KNOWLEDGE AND BEUEr, 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.IN-PROGRESS OR COMPLETED WORK. I AGREE TO START WORK ONLY AFTER ALL NECESSARY PERMITS HAVE BEEN RECEIVED. SIGNATURE OF APPUCANT OR AUTHORIZED AGENT DATE I HEREBY DESIGNATE Bryce A. Ecklein. Kato&Warren. Inc. TO AGENT IN MATTERS RELATED TO THIS APPUCATION FOR PERMIT(S). I UNDERSTAND THAT IF A FEDERAL PERMIT IS ISSUED, I MU SIG THE PERM SIG F P DATE SIG TU OF LANDOWNER(EXCEPT PUBLIC ENTITY LANDOWNERS,EG.DNR) DATE • • ' THIS APPLICATION JAUST BE SIGNED BY THE APPLICANT AND THE AGENT,IF AN AUTHORIZED AGENT IS DESIGNATED. —+. 18 US.0§1001 provides that Whoever,In any manner within the jurisdiction of any department or agency of the United States knowingly falsifies,conceals,or carers up by any Dick,scheme,or device a material fact or makes any false,fictitious,or fraudulent statements or representations or makes or uses any wilting or document(mowing same to contain any false,fictitious,or fraudulent statement or witty,shag be fined not more than 510,000 or imprisoned not mare than 5 years or both. . 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:) • • 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 in the instructions. N.Nt EVERETT jam•Longtitude:122°43%36" S g Latitude:47°-2T-16" BRE RTON ,a. �j�,, GRENTON 900 SW S 1 I SITE le/A, 1-- ACOMA• f/ •OLYMPIA b •--_''` • j ,:•/.1'• 5 I SITE a4%.a G Wa 1 WASHINGTON ^ y► W� 0 . . i ... a , , • W 16th St ' I' 41 \k ' ,s3 Ren on . . \ el r ' il 5 Begin �Project `_ r Sttander.Blvd SWo7th St ii End , i N 2 1 \ a / t Project•w 30th St re)APPa , — ( i j2 1\ . i a < .: Z . ( �_ SW 41 st $t up 1 t30th s 2,JL —, r a.........„- .,,Sw___SL 1,/. 4&143 'cca 11 1\/ i" Kent ! . 1 1 \ E • \ , Ai • , NO SCALE Proposed Fill IN: Wetlands on Site PURPOSE Complete Roadway AT: City of Renton DATUM: NGVD of 1929=0.0 COUNTY: King STATE: Wa ADJACENT PROPERTY OWNERS: See attached VICINITY MAP APPLICATION BY: City of Renton Figure 1 SHEET: DATE: • • + .... - ,.•'r,+ .. .... ....... C� 4 ,r?;. i, . 1110.44.1! ::r4. 4. P [I*'' . West Valle Highway " .' 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A 7.:,■S' !�'�rt+••..1.. .:"!f•7 i•.ff•r.fav%���•• ',yea fi^...5�r"ifif�'. .j ,'.,„ o O I i rj ..•..•a•y.yay.•..•,••.••a? y�y.•.a•,:•..• •Y1N'11�e.S.:�i;. - j;j :•:r:aa•r••••r•r•r•••. • .:: 1 •N.• ti ti;.... ■•y•.-•.••,•••• y •4. .. •4• % r' r• •• ..(t. k 11114 ••rMy.:r•:•l 4f e•.•:••.:•••b'•.•:: r :•r ••.,4jrj■jrr.r..+a•••lc. a/oug,i: *:1".�4° �d:.°:. err •r'• ::.r:?:•".r: •: f r;.jr.. w•r•r•. r � 1I I el. i fiit,. Iit IF u, irri xi. )4 4 • mNf I *64C f A. 5 = NP 0 • (CRY OF REMON) 1 r i t---' Z ..., - � . t . ) \\; r WETLAND BOUNDARY(TYP.) I•• THE BOEING CO.) • r • I_ PROJECT WETLAND BEGIN-CONSTRUCTION (Forested Scrub shrub) ••� SOULFI MARSH• W f��C- 'PFO/PSS ' ' ' (Emergent)-- l - LI - - • ` _ �,'�'"'_ ,_ � .JJ. �• BEM_= --- I. .. .I/ � �+ --- '•c '-1+00 ... ,-. Q .�.--— 3+00/ ` \4 ,, 2�. of . � ." iAN ' Ar �r4. . " z - µ,, AE.�DALE �1VE. SW.--)��:r/.I �� �� I— — �S /; — z. r-r. _ Agalt - .-�", r -•-;•I MECHANICALLY STABILIZED PKOPdSED�WEhANb FQL ° <Ll • rr � \ 1'7 -� EARTH'RETAINING WALE (Sant gronnu�or moil far roodb.d) J I• �� 10--N_ 12ROJECt Wt 1LAND F �'., Q i } . . . . . . • . . •'(Emer ent•Scrub shrub) I lj \ /. /�PSS%PEM.. • W£1LAN0 BOUNDARY(TYP.) • (CITY OF RENTON) • (CITY OF REMON) I (CITY OF RENTON) •.. ... 1 • EROSION CONTROL MEASURES I. SILT FENCE LOCATED OUTSIDE CUT/FILL SLOPES AND ALONG PERIMETER OF SENSITIVE AREAS. 2. TEMPORARY COVER OF ALL EXPOSED SLOPES DURING CONSTRUTION. 3. PERMANENT SEEDING OF ALL SLOPED AREAS UPON COMPLETION OF WORK. 4. DUST CONTROL PRACTICES DURING CONSTRUCTION. 5. VEGETATIVE AND STRUCTURAL STREAMBANK STABILIZATION METHODS FOR DITCHES AND STREAM. 6. OUTLET PROTECTION AT CONVEYANCE OUTFALL LOCATIONS. Proposed Fill Vertical Dotum: NGVD 1929 IN: Wetlands on Site SCALE FEET PLAN AT: City of Renton FIGURE 6 COUNTY King STATE. WA APPLICATION BY: City of Renton 0 50 100 DATE: SEPT. 1999 I /- I itW �,\ . C.._.�. . . .(THE BOEING co.) . riI fe LU _ _ SOUTH`MARSH/ VEnAND•BOUNDARY(TYP.)� _�•V_ CONS CTIR I I I N I r.rl_-�\�- _,..,..__,...�±`...�.— •_..��__.:.r___!- -� /tom` ',� I `- .�-� e-. ==-4 :' —_== W."-:>--�,---•.- K4-1 7:— -_I" -F47 O. ".." • . /de -21- . . . ....... _� .` • .moo .o� --�.M` _`_v''lgte141)11"'-Lg I \� o \:c `��llil t�, LiJ . °. . .. . MECHANICALLY,STABILIZED ; ;.,_,Zd EARTH RETAINING WALL � ' i .c‘.!, II I 13, . ' _ 003 AC a ino11'lor ' `; I 1! N. = PRdslECt WETLAND E Aker V '`9 (Emergent crub shrub) �1 I . C 6 .`'I I \ PSS EM —►0---- _ 1 l� I i 'L /n WETLAND BOUNDARY(TYP.) C W (CITY OF RENTON) III I 2 II I _-. • --... .._. --- f EROSION CONTROL MEASURES I. SILT FENCE LOCATED OUTSIDE CUT/FILL SLOPES AND ALONG PERIMETER OF SENSITIVE AREAS. 2. TEMPORARY COVER OF ALL EXPOSED SLOPES DURING CONSTRUTION.,- 3. PERMANENT SEEDING OF ALL SLOPED AREAS UPON COMPLETION OF WORK 4. DUST CONTROL PRACTICES DURING CONSTRUCTION. 5. VEGETATIVE AND STRUCTURAL STREAMBANK STABILIZATION METHODS FOR DITCHES AND STREAM. 6. OUTLET PROTECTION AT CONVEYANCE OUTFALL LOCATIONS. Proposed Fill IN: Wetlands on Site Vertical Datum: NGVD 1929 PLAN SCALE FEET AT: City of Renton FIGURE 7 COUNTY King STATE: WA APPLICA770N BY: City of Renton 0 50 DATE: SEPT. 1999 I • SOUTH MARSH BOUNDARY I WETLAND F BOUNDARY • (Emergent) 1 r 1 (Emergent Scrub shrub) 46't F ROADWAY MSE. WALL q (TYP.) 18 _.._ _._ .__._._..._.___.__.-.--.•-------.__.___------_—_._._._..____..._.-____.._........._.__ _.Iz _ .. 18 16 - - --- - - 16 — ---- _ - __EXIS. ING_� 14 -�I -/ ..` _ - �_ �/ GROUND_- -- --.- 14 12 . ,; — _-_ — ��_ - 1--�..__--_- 12 --- 10 10 -60 -40 -20 0 20 40 60 80 SECTION A-A Proposed Fill IN: Wetlands on Site SCALE FEET CROSS SECTION AT: City of Renton 1 FIGURE 8 COUNTY King STATE WA Note: 2:1 Vertical Exaggeration APPLICATION BY: City of Renton 0 15 30 Vertical Datum: NCVD 1929 DATE: SEPT. 1999 )11.41, ...... •'::::„ ..• ... gi <s�'§ F -5 OP ..... West V. Highway ».......... »»..»....» »...... \ .::: ' Btrangton Northern Santa Fe »..»........». ......• »..»....» I. r_.=rsenoBnal • ••1.:.. n '/ 1 SM • Nv. Springbrook Creek '....: ri 3 • ci- 0. t�/� llad Ave S 4 -� cnDc� DZv 2 .D O ni o M C. ° * 3 sr East Valle Rd At, 0▪ „ , ,....„.: z . o • on 0 0 11Ipr o v 0 cn al mo, FA m o °' m .i' /0*j/ - - !- - -1111 'A' I - - - - - - - - - � IOrri � /i%0 City of Renton 1 ,N____I-I '� %%./4•1-. - - - Wetland 'C' _ *: .1 Phase 1 i! - o .I �::••. ,•, Created Wetland (typ.) 141 1 \:::: .41; PRIVATE a ���\\.e.," DE4ELOPM£NT j BOEING(- H�I� 1\if , I OFFICE ! LJ i/I ' _ _ PARK ! < i ��� La i I - W �,I Excess Enhanced Wetland from W, I. — ri% _ • Phase 1; Assigned to Phase 2 c ! y ,:`•� I% Mitigation. (tip.) j Y (i - - O b:' City of Renton 811 - - I Wetland b' 2 1\`,, _ &i ' _ SW 27TH ST. ,.7/.- _ _ ..4.,.,i, .. - 6. - - .. I. I 1 (---------- ' ;; City of Renton f— — . -------------: F ; Wetland Z. ••••••• • •ram I Boeing I . '1 .1: I Proposed Phas II 'South Marsh' - I - _ i 1 Wetland£nhonement I I Phase U Impact Area ,,+ } I A I'•f<. _ 1.Q5 Acre; - - - - - - - - - Iti I - - I'- - - - 1 - - - - J • - - - - I,':?.;' I City of Renton City of Renton City of Renton _ _ I _ Wetland_ �' ':i) Wetland 11' Wetland �11' • _ - i - i ::: - (a.k.ce. 12-b)- i - - _ - _ - .. i'gif.;',. / - .1 . . _ . City of Renton : Oakesdole Avenue Wetland C' •zs:. Phase II Project Area I • . - - i=:n' y - - _ - - ' i . _ f-t _ _ 1 Proposed Phase U , �, �► _ i Wetland Creation "!e I c-..\:-- .! lin IIExisting Ookesdole Ave. y , I�I Terminus ......• 1 - J- i' Ilil - - - - - - - LEGEND nExisting Wetlands P7.-70tz.0 Phase Il Proposed Enhanced Wetland j Phase Il Impacted Wetlands \ Phase I Created Wetland on Phase U Proposed Created Wetland A Phase I Enhanced Wetland PURPOSE: Construct Roadway IN: Wetlands on Site DATUM: .NAVD 1929. • AT: City of Renton ADJACENT PROPERTY OWNERS: see attached COUNTY'.King STATE Washington APPLICATION BY City of Renton FIGURE 10 DATE: SEPT. 1999 441; 4i . B0 ota uCL - F¢- Z'Q ii Y O Atiii 0/111111 . o •• 1— o U Z W 11Ifr Pa lapoA P9 ` Z• ¢ v ¢a co v. r Z s oAr PunC .2 3 - Y c=n O. ' -- - "�jai�'1°014g"15 I 5 re ®1 8 i .4. 4 u ri,- 07 W . . '.i.' to Z ,_ I L 1 .4 .. 1 4110 .•PF. i % I ..... .7r. I MS Mr OI°9$63120 - I MS GAY en/MID° /Q • ri . 0 .." \ i g I I .1.. I e H Ii re . .i..: ..6. a. ® —f° .i-� I .T.AIr'RSRiAC:R�T. �f -... •... ....•.nwrr.....•..........«..wwww««.... ..«•.«..«..............w««.....w..«•..«.n«.«.......«•.w ..«w«-.w.««......•.•• «..w.«.._........�i°{ uaOq�iOy�tg��e 13001213E.41 a'IOd YOilin .........•.•.«.«.•. .0..0 •.w AnilitH o l°A ISM . i�.....7 • 'rk 7..• [ r:.• �I1I sx il : .. 6 :s rut::.: * J Conceptual Mitigation Plan Oakesdale Phase 2 Introduction As Phase 2 of an ongoing project, the- City of Renton is proposing to connect the disjunct portion of Oakesdale Avenue S.W. between S.W. 27t' Street and an extension that is located at approximately S.W. 30th Street (Figure M1) . The proposed roadway would be built in part on top of an existing utility berm (METRO sanitary sewer) and in part on filled wetlands immediately adjacent to the utility berm. Approximately one acre of fill needs to be placed in the wetland along the east edge of the utility berm. This fill will provide adequate width for the proposed four-lane roadway and paved pedestrian walkway. Project Location Figure M2 shows the project location along Oakesdale Avenue S.W. just south of the new Boeing facilities on the old Longacres Racetrack land. The site occurs within the USGS - Renton Quadrangle at T23N, R4E, Section 25, W. M. The project area is located approximately 1,400 feet west of Springbrook Creek. Approximately one mile downstream Springbrook Creek flows into the old Black River channel and another 3/4 of a mile downstream the Black River flows into the Green River. Current Existing Conditions The wetlanDds report for Phase I of the Oakesdale Avenue improvements (HNTB 1997) delineated a Category 1 palustrine scrub/shrub wetland adjacent to the unused section of Oakesdale Avenue between S.W. 27th and S.W. 30th Streets (Figure M3) . This wetland is actually a combination of what the report labeled .as Wetlands F, G and the Boeing South Marsh. These wetlands located on either side of the METRO utility berm are connected • by a 48-inch pipe that allows for free interchange of water and aquatic organisms. No fish are present in this wetland. The total wetland area is greater than 20 acres in size, contains open water, palustrine forested, palustrine scrub/shrub and palustrine ,emergent vegetation types. It is classified as palustrine scrub/shrub because it is not hydrologically connected to a stream or river, it has less than 20 percent S ( \\ te 9°C° sws asf \f 1 ,6, 4,_.* \ ' y,.. C., . 4A ,.... . - s • ) 7 % 21. God Wa Tukw - = , Wice 7 11 ' ` tb Am Renton \il`°�� eN• 1 I t 1 Begin `-_ (a, Project Standen Blvd \- , L.,' SW 2Tth St End 0 a Project ;sw sots st X i (Approxi hateg 1t 5 i" y Q_ SW 34th St ) . Yl f SW 41 at $t • ,- 1t30th S 4. ,.- :• —SW a�nrT,yt --- . 1 `�� , Kent h Q I • %, N bill City of Renton Oakesdale Avenue SW Extension Vidnty Map NO SCALE Rpm Mt 0 1 ,... 42 1 I Pall I P ....:::::::. F -s * ...:, .... ,.../......... ",........ West vane Highway ••••• }: ........... .................................................................. .......w Union Vaci k Rai�oad" Burlington Northern ...�.... orthetn Santa Fe .•.. • r'_'�.-� senofieal i. i I I • a y Onkesdale Ave SW • waggi------ Oaltesdo Ave SW �S 10) II _+ Ebrook(reek..... ,., z .LindAveS s. S) East Y. . Rd Pr N 111,9r �. 1 a 0.�- MC 0. i ' 4i) b+ 0 0 0 1 R t_. .. y � •• as'~ � '.. 4 t � f- -Tv w•f• "%3'"!- i 1 T 172, 16 f _Iv a• +t Y 4�w , - --{ f-7- n �HI4lhSt � S ; i. M Cq 8 ; J 'Skis r^ ;� RENiON 'e' i" t — •, 1 rt_t t u CL l C f �3 T. i .41 Ie L 7 i2 r. F .A • 7 � - ' Y q m 40: 1 ills ; - j O • , i, ;3 k'fJ 4'�sk a O " L J .ao $ . C -we!land C s : , � ! `TUKY LA _ - ( --Ill -' ks.;>:..,.� ..,,u;sC -.. wetland D' s en'...` „„: . 9 Boeing south marsh ,,. - ., < _.._ .- ii i.h • r n ••A n • wetland rrH,r - V n F n�An et A..., `,�� .-�^ ` f nh 'n in n�nnAA t^ -P <3 w_ l 4.V` ` / fnn S n n)nnnA .. ,_t F n n . 1 s.e. w. 4'.-3;;�c ; nhn 4 wetland n o i � �, s yY, \ F„ V ,4gi y� `�. 4. weiknd"G �:_ rrr• N SW 34th St c • g ,._ f T p f{ 'tea • y' A- ... 1 SW 41 i St '.c •.. _ 1 - .—e-.m...: I e 1. 1 - - .- proposed alignment 'aft. wetlands • %� i mitigation sites . ' Gty of Renton AOakesdate Avenue SW Extension o u4, ;> Proj• ect Area Wetlands Miles Fie M3 forest overstory and the area is dominated by wetland shrub species or trees less than 20 feet tall . The mitigation site proposed for wetland restoration is located about 900 feet to the east of the wetland that would be impacted. The site (Figure M4) has about 2 acres of upland available for wetland restoration and 2-3 acres of degraded wetlands suitable for enhancement mitigation. The old, unused roadbed (approximately 10 to 12 feet thick) was originally built across wetlands (Figure M5, X-section A) . It currently supports black cottonwood of various ages and an understory of Himalayan blackberry, nettle and assorted other disturbance species. Approximately midway down this road a small culvert (18" dia. and 2-3-foot drop) allows excess surface water in winter and spring to flow from west to east, but not back. The upland mitigation site is separated from Springbrook Creek by a Category 2 wetland of palustrine emergent, scrub/shrub and forested wetland types. The upland that defines the east side of this wetland is the berm constructed to channelize Springbrook Creek. A small ditch breaches this berm to drain flood waters that occasionally overtop the berm. Other than flood waters, from winter through spring the ditch carries very low flows (<0.1 cfs were observed in March/April, 1999) of ground water and some surface runoff from this wetland into Springbrook Creek. About a third of this 10-acre Category 2 wetland is dominated by reed canarygrass, an invasive, exotic grass. Project Activities and Potential Impacts The project is proposing to construct a four-lane arterial across the existing utility berm and add a paved sidewalk along the west side. The fill required for these improvements will encroach on wetlands along the east edge of the project. No change will occur along the western edge of the existing utility berm prism. Approximately 1.05 acres of -Category 1 . palustrine scrub/shrub wetland will be filled. The culverted connection between wetlands on either side of Oakesdale Avenue will be maintained through a similar culvert to be located at the current : crossing. Stormwater .detention and :treatment -facilities will be constructed to meet King County water - quality regulations. The majority of outflow from these stormwater facilities will be directed into the wetlands created as mitigation for Phase 1 of this project. The remainder of stormwater outflow will be sent to Wetland G, west of the utility berm. LEGEND . _ fia UPLAND • L:J CREATED FORESTED WETLAND (1.3 ACRES) ; CREATED OPEN WATER WETLAND (0.3 ACRES) , `• AREA OF ENHANCEMENT (0.8 ACRES PEM-PSS) t .1 rl' i.^.• , .•!.......,:: i: •:I- :t.• ';:f- WETLAND 10'OFFSET FROM TOP OF SLOPE J INCLUDES APPROXIMATE TOE OF f` i r:v• ( f•�IJ f'::'. CREATED 2:1 SLOPE) `;,;.'JI • • . I n; ,f;%,: ,q TOP ELEV. 17.87 ;' •> TOE ELEV. 10.59 '�;: itfr •••• t �••'d 10P ELEV. f3 i5 ' 4• ........ •"' • :•.1,,, TOE ELEV. 9.30 10P EEO 12.96 ,••. ••i 5 f 1. \� �•�.: :•.•. ��� ,_.,..... 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'_• -+ter a•-c-�a•-e• PROPOSE OPEN WATER CREATION AREA MTS. .se +a•.m• rigorous,P AUO( ��CETLAMD • . ;extei PFOrrea COMIWY PEMcoraurm• • PROPOSED FORESTED CREATION AREA 416,4 Clts N TS. City of Renton Oakesdale Avenue SW Extension Mitigation Site Cross-sections Figure MS The wetlands being impacted have moderate to high functions and values, as rated by the modified Reppert Method (City of Renton 1998) . The wetland functions that would be reduced or lost due to project impacts include water quality improvement, flood storage and wildlife habitat. The upland and wetland sites proposed for mitigation have very low function and value due to past roadway construction and dominance of invasive herbaceous species. Proposed Mitigation A conceptual mitigation plan has been developed based on expected approval of proposed amendments to the City's Sensitive Areas Ordinance. The proposed amendments require: No net loss of wetlands, Replacement wetlands must be the same Category or higher, For Category. 1 Scrub/Shrub wetlands, a minimum creation/restoration replacement ratio of 1.5 :1 with an additional 2:1 enhancement ratio, and Mitigation must be in the same drainage. The mitigation being proposed will replace the filled wetland along Oakesdale Avenue with a combination of open water creation, palustrine forest wetland restoration and palustrine emergent to scrub/shrub wetland enhancement (Figure M6) . Wetland Type Acreage Open Water creation 0.3 Forested wetland restoration 1.3 Scrub/shrub and emergent enhancement 2 . 1 Total 3 .7 An area of 0.3 acres of the unused roadway mitigation site would be excavated to a depth of 10-12 feet to the east of a small area of existing seasonal open water habitat (Figure M5, X- section B) . The open water being created will provide additional area of open water contiguous with an existing ephemeral pond and is designed to provide a deeper containment area that should retain year-round open water on the site. This will provide additional :wildlife habitat, as . well .as enhanced water quality, flood control and recharge/discharge. No planting of emergent vegetation around the pond is planned as its construction is designed to be relatively steep banked and a the proposed palustrine forest restoration plantings will be _placed adjacent to the east edge of the pond. 4 \ - - - - - - - _ , - ez V.,%4 ! City of Renton j �1I1 "- 47' _ - _ Wetland 'C' ! • ,,,,$. ' \,,,;\V: Phase I , 1 V \ `�i Created Wetland (typ.) y�yGl PRIVATE I IX ��\� DEVELOPMENT _ - ----(- 4640 r. BOE/NC °n ti 0 '�Q, 0 OFFICE i S" i�� Y! !�' _ PARK i W 4 ?� , W i ,��% Excess Enhanced Wetland from 4+ _ -' I �jri - Phase I; Assigned to Phase 2 cx` •�' W 4r Mitigation. (typ.) �: , 00 �� 1 City of Renton mj 1 `\ Wetland b' -j• I - - 4, ail( 1 - - - -- - - SW 277H ST. -Z i /./ i ' II 1------_ < .. _ _ ... ... ..7. . ,_ 1 ., City of Renton•= - - - Wetland 'E'- - ....... Jr f ,,,� - - - Boeing I ' Proposed Phospp U South Marsh' I �. - - - - - J Wetland Enhancement -•• - - j Phase II Impact Area - - ` t _ 45 e; _ . - I �t,. I 0: 7 - j City of Renton .',Zr City of Renton ; j City of Renton 5§ _ Wetland 'F' - - ZZ1 - Wetland '12-b' I ; Wetland '11' - - - - ,t%3L- ... - • - - - i4; / -I :::1 ice.: + • `1 Cityof Renton - - - j - " - - - - 1 ,4, Oakesdale Avenue ••••• Wetland C' y%' Phase II Project Area r••si IS - - -I - -/--z ._ - - - - •i I Proposed Phase 11 I► _ Wetland Creation to I - - 11 r! - - - - - 1.6.ecres - - - - • jj ICI -• Existing Oakesdale Ave. • :1 i - Terminus - - - ••' IH! �� - - J ! � - • , `_ LEGEND • t f= i • 1-7 ExistingWetlands ;li Phase tl Proposed Enhanced Wetland � CM jj% Phase II Impacted Wetlands �� Phase I Created Wetland WA glz Phase II Proposed Created Wetland /� Phase I Enhanced Wetland Gty of Renton Oakesdale Avenue SW Extension Project Wetland Relationships • Figure M6 An area of 1. 3 acres of the unused road mitigation site will be excavated to the natural water table and filled with forestable soils to a level that will permit development of wetland forest species as the dominant vegetation (Figure M5, X-section C) . The east edge of the existing unused roadway and configuration of the existing culvert that separates the two wetlands will be retained so that the hydrology of the two wetlands will not be modified by mitigation activities. The palustrine forest wetland being created will be planted primarily with coniferous tree species, providing a type of wetland wildlife habitat that has become very limited in the lower Green River basin. A proposed species list is shown in Table Ml . The mitigation sites being used for wetland enhancement are a combination of previously enhanced (banked) and newly enhanced wetland. The banked enhancement is an area that was treated in 1998 during Phase 1 of the Oakesdale Avenue widening project. About 1.3 acres of degraded Category 2 wetland was treated for invasive species and planted to wetland shrubs. Since this treatment was in excess of the area needed for Phase 1 mitigation, it was banked for future use in Phase 2. The additional 0. 8 acres of enhancement mitigation will come from planting willow and red osier whips into the northeast end of the Category 2 palustrine emergent wetland located between the upland mitigation site and Springbrook Creek. A work plan, performance standards, monitoring plan and contingency plan will be developed to ensure that mitigation for lost wetlands and changed functions and values is successful. The mitigation activities outlined above are expected to provide a net gain in wetland functions within two to three years and much higher functions and values in five to seven years. Summary The City of Renton is proposing to connect the disjunct portion of Oakesdale Avenue S.W. between S.W. 27th Street and an •extension that is located at approximately S.W. 30th Street. The construction to upgrade this road to four lanes with sidewalk along the west side would impact ' 1.05 acres of wetland ecosystems along its eastern edge. This wetland is a Category 1 palustrine shrub/scrub wetland that supports open water, scrub/shrub, emergent and forested wetland types. Mitigation will take the form of restoration of 1. 6 acres of open water and palustrine forested wetland and enhancement of 2 .1 acres of palustrine scrub/shrub and emergent wetland. Enhanced water Oakesdale Phase 2 TABLE Ml: Species list for mitigation plantings. Scientific Name Common Name Buffer PFO PEM Size Spacing Planting Planting Planting Trees: Alnus rubra Red alder. X 18" 6'o.c. Fraxinus latifolia Oregon ash X 18" 8'o.c. Picea sitchensis Sitka spruce X b.r. 8'o.c. Pseudotsuga menziesii Douglas-fir X b.r. 6'o.c. Thuja plicata Western redcedar X X b.r. 4'o.c. Shrubs: Cornus stolotufera Red osier dogwood X 6'1.s. 3'o.c. Gautheria shallon Salal X 4"pot 2'o.c. Oemleria cerasiformis Indian Plum X 12" 3'o.c. Physocarpus capitatus Pacific ninebark X 12" 2'o.c. Rubus pary florus T imblebeny X 12" 3'o.c. Salix lasiandra Pacific willow X 6'1.s. 3'o.c. Salix scouleriana Scouler's willow X 6'1.s. 3'o.c. Spiraea douglasii Douglas'spiraea X 12" 3'o.c. Wetland seed mix: Deschampsia cespitosa Tufted hairgrass X Festuca rubra Red fescue X Upland seed mix: Festuca rubra Red fescue X Lolium multorwn Annual ryegrass X b.r.=2/0 bare root Is.=live stake o.c.=on center Buffer and PFO to be plant in informal groupings;PEM to be live staked on a 3x3 grid . quality, flood control, and recharge/discharge and improved wildlife habitat are the benefits that would be derived from mitigation proposed for this project. REFERENCES City of Renton. 1998 . U.S. Army Corps of Engineers Permit Application, Permit Number 97-4-01329 . City of Renton, WA. HNTB Corp. 1997 . Wetland Technical Report. Oakesdale Avenue S.W. , S.W. 16th Street to S.W. 31st Street, Renton, WA. Prepared for City of Renton, WA. In association with Shapiro & Assoc. , Inc. Seattle, WA. Biological Assessment Oakesdale Avenue S.W. Phase 2 Prepared for. National Marine Fisheries Service Habitat Program/Olympia Field Office 510 Desmond Drive S.E., Suite 103 Lacey, WA 98503-1273 Prepared by: City of Renton Planning/Building/Public Works Department 1055 South Grady Way Renton, WA 98055 September 1999 Introduction As Phase 2 of an ongoing project, the City of Renton is proposing to connect the disjunct portion of Oakesdale Avenue S.W. between S.W. 27`h Street and an extension that is located at approximately S.W. 30th Street (Figure BA1). The proposed roadway would be built in part on top of an existing utility berm (METRO sanitary sewer) and in part on filled wetlands immediately adjacent to the utility berm. Approximately one acre of fill needs to be placed in the wetland along the east edge.of the utility berm. This fill will provide adequate width for the proposed four-lane roadway and paved pedestrian walkway. Project Location Figure BA2 shows the project location on Oakesdale Avenue SW just south of the new Boeing facilities on the old Longacres Racetrack land. The site occurs within the USGS - Renton Quadrangle at T23N, R4E, Section 25, W. M. The project area is located approximately 1,400 feet west of Springbrook Creek. Approximately one mile downstream Springbrook Creek flows into the old Black River channel and another 3/4 of a mile downstream the Black River flows into the Green River. Threatened and Endangered Species Lists Lists of federal and state listed and proposed threatened and endangered species were requested and received from the National Marine Fisheries Service (NMFS), United States Fish and Wildlife Service (USFWS), Washington Department of Fish and Wildlife (WDFW) and Washington Natural Heritage Program (WNHP) (see Attachment A for copies). The NMFS indicated that chinook salmon (Oncorhynchus tshawytscha) , a threatened species, and its critical habitat may occur near the project. NMFS also stated that Puget Sound coho salmon (O. kisutch), a candidate species for listing may be present near the project. The USFWS indicated no listed species expected to be present, but bull trout'.(Salvelinus confluentus), a proposed species, may occur in the vicinity of the project. The WDFW indicated that coho salmon and cutthroat trout (O. clarkz) were the only Priority species known to be present in the Black River drainage and no terrestrial or avian species of concern were known to occur within a one and one-half mile radius of the site. The WNHP had no known locations for listed plant species in the vicinity of the project. Surveys conducted by qualified biologists for state listed threatened or endangered plant and animal species that occur in King County found nothing. Chinook Salmon - Chinook salmon in Puget Sound are either spring-run or summer/fall-run, depending on when the adults return to freshwater. Summer/fall chinook are much more abundant than spring chinook, and no spring chinook are known to inhabit the Green River watershed. Adult summer/fall chinook typically return to freshwater during July through October and primarily spawn from September through November. Juvenile summer/fall chinook typically spend only about three months in freshwater before emigrating to Puget Sound, and must have access to margin areas of streams during their fry stage. S �� ��` 1, R no SW S I \t'N\ .41Y .. f"--- / . \ • \ _.- • . _ . . 1 . ' ) • TO 7 148 ' a Tukw - ' '�� - ° �• 1In\ l 'rt: i-_ Renton y` )/C)ii . / - ,..-- k . • t, T: W1 s' H Begin \•�� it �l Project Stranden Blvd ' , SW 27th St : End y o al / i Project :SW 30th Sty ce • 9 kw Q -1- \ 8 cn SW 34th St 1 C Q �'r-_ - 3 c W in ! � /'. I IS SW 41 st St 180ttt S `�c Kent , 1 b � _ `' 16 11 1 \ I \ ;; ® mil Gty of Renton A Oakesdale Avenue SW Extension Vicinty Map NO SCALE Figure BAl • • I --t. 0:). -............,..„ ."4:::4:*•••.•:•.::::::•:•:thy•::. 1104- " ::. iiir West Valle Highway ...,/' ....._»»» -»».....».»..».....»............._....».»..»».». .. Union kat Raiirna .. ........»..».».....».. ».»..»».».....».....».. . moungton Northern Santa Fe »..... '•"' r..--= --- seaofwel I I I I '00 I M ■ III Oakesdele Ave SW 4-47,717-* ----- Oakadale Ave SW i • :. f 0 0 aft. an ,:'. 111 ti, o 52410ro0k Cheek.:. .... • 7O t' _ ei I trod Ave S • o At O fast Valle Rd h,,. N CI 4. e 111pIr CI U C A N e A A a nA+ C o 0 Mainstem spawning in the Duwamish/Green River watershed occurs between River Mile 24 and 61; additional spawning occurs in Soos Creek, Newaukum Creek, and Burns Creek. No chinook spawning occurs in the Duwamish/Green River within the built environment of Seattle,Tukwila and Renton. Puget Sound Coho Salmon - NMFS determined that coho salmon in Puget Sound and the Strait of Georgia were generally stable and a listing was not warranted. However, because of limited information regarding the health of this population and definitive information on the risks to naturally reproducing fish,NMFS added the Puget Sound coho salmon population to the federal list of candidates for threatened and endangered species. NMFS may at any time reconsider the present listing and propose to list the Puget Sound/Strait of Georgia population as threatened or endangered. The coho salmon life cycle is typified by roughly 18 months of freshwater rearing, followed by roughly 18 months of ocean rearing (Weitkamp et al. 1995). Because coho fry overwinter in streams, they are dependent on availability of quality river habitat for survival and typically use side channels,wetlands,and off-channel sloughs for rearing(Sandercock 1991). Habitat features important to coho salmon include large woody debris accumulations, bank undercuts, and deep pool habitats. Juveniles outmigrate during spring freshets, usually during May in Puget Sound basins. Accumulations of clean spawning gravel with stable hydraulic conditions are needed for successful egg incubation(Weitkamp et al. 1995). Current Existing Conditions The project site currently has a utility berm for King County METRO sanitary sewer connecting Oakesdale Avenue between SW 27th and SW 30th Streets (Figure BA2). Springbrook Creek is located approximately 1,400 feet to the east. During the wettest periods of the year there is very low surface water flow (observed 0.lcfs in April/May 1999) through these two wetlands into Springbrook Creek. No water quality information is available, but outflow quality is assumed to be relatively high as a result of wetland functions. The wetlands report for Phase I of the Oakesdale Avenue improvements delineated palustrine scrub/shrub wetlands on both sides of the METRO utility berm to the south of SW.27th Street (Shapiro & Assoc. 1997). These two wetlands are connected by a 48-inch pipe that allows for free interchange of.water, fish, or other organisms. Based on the Washington Department of Ecology Wetland Rating System (WDOE 1993) these two wetlands actually constitute a single entity. Under the City of Renton's Sensitive Areas Ordinance, since the total wetland area is greater than 10 acres in size, contains open water, and palustrine forested,palustrine scrub/shrub and palustrine emergent vegetation types, this area qualifies as a Category 1 wetland. It is classified as palustrine scrub/shrub because it is not hydrologically connected to a stream or river, it has less than 20 percent forest overstory and the area is predominantly vegetated by wetland shrub species or young trees less than 20 feet tall. 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' .," • • -' •'• '' ;--:. '• :%;)1; , . 4i on am— proposed alignment wetlands .J1 mitigation sites '...- A City of Renton Oakesdale Avenue SW Extension o v4 v2 1 Project Area Wetlands Miles Figure BA3 The proposed mitigation site is located about 900 feet to the east of the wetland that would be impacted. The 2-acre upland mitigation site (Figure BA4) is an old, unused roadbed (approximately 10 to 12 feet thick) was originally built across wetlands (Figure BA5, X-section A). It currently supports black cottonwood of various ages and an understory of Himalayan blackberry,nettle and assorted other disturbance species. Approximately midway down this road a small culvert (18" dia. and 2-3-foot drop) allows surface water to flow from west to east, but not back. The wetland enhancement portion of the proposed mitigation is a degraded site supporting a Class 2 wetland having palustrine scrub/shrub and emergent vegetation types. An area of 1.3 acres was enhanced as excess wetland mitigation in 1998 during Phase 1 of the Oakesdale Avenue improvement project and banked to meet future project mitigation needs. An additional 0.8 acres of degraded Category 2 wetland will be enhanced in the northwest corner of the wetland between the mitigation upland berm and Springbrook Creek. Springbrook Creek Springbrook Creek drains a watershed subbasin of about 24 square miles into the Black River Channel before entering the Green River. The Black River Pumping Station was constructed in 1972 at the mouth of the Black River to prevent waters from the Duwamish/Green River from backing up into the old Black River channel and Springbrook Creek(Harza Northwest 1995). A seasonally operated fish ladder was installed at the pump station. Adjacent to the project site Springbrook Creek was straightened and channelized in 1984 and is periodically dredged to control invasive vegetation and sedimentation. Summer low-flows of about 1.5 cubic-feet/second have been measured just upstream from the project area (Harza Northwest 1995). An inventory of stream habitat for Springbrook Creek (Jones & Stokes 1991) indicated that within the project area bank vegetation,is dominated by grasses and a few shrubs. From mid- morning to late afternoon" there is no shading of the stream. This section of the creek is characterized by poor water quality (high sediment loads; high temperatures and low dissolved oxygen) and provides very limited habitat for salmonids. Although suitable spawning habitat is present in upper tributaries, sediment buildup and poor water quality combine to eliminate the lower reaches of Springbrook Creek for spawning(R.W.Beck&Assoc. 1997). A second fisheries report for this general region of Springbrook Creek describes the habitat as generally poor for salmonids and its being used primarily as a migration route (Watershed Dynamics 1998). They stipulated that some rearing may occur in early spring when water temperatures are suitable, but fish do not appear to spend'extended periods of time in this channelized section of the creek. No pools,riffles or large-woody debris are present in this reach of the riparian corridor. Coho salmon have been stocked in Springbrook Creek and its tributaries since 1976. Between 1981, and 1992, 'an average of 96,000 coho salmon fingerlings were released upstream in Mill Creek (Harza Northwest 1995). Since 1992, stocking in Mill Creek has been reduced to 50,000 LEGEND fiR UPLAND . © CREATED FORESTED WETLAND (1.3 ACRES) • s�% CREATED OPEN WATER WETLAND (0.3 ACRES) '; EMI AREA OF ENHANCEMENT (0.8 ACRES PEM-PSS) ; :}:; WETLAND 10'OFFSET FROM TOP OF SLOPC t,' ,,r ;ir• (INCLUDES APPROXIMATE TUE' OF f CREATED 2:1 SLOPE) 1 (� t' TOP ELEV. 17.87 R•!!' 4 t:• d • i-,as TOE ELEV. 10.59 �r1 '41,:J.1/1 a•aa:�� T. 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A iillier �� •�% • 1` , • i 1' ll , R ,- . oaerr4 GRACE 412,1 ).,4�� \ i I�, , . ,,,, ,,._ �rin g .I • , roe ca►Ltnr roe-tco" • Q PROPOSED OPEN WATER CREATION AREA a N.T.S. _ e, _ ... ; �,r�`�l1' I : :' Baer rs emir 'ij;,;� 3�._.•_•r��- _ .. � , ` ��:' .ST...i./..`'... ,r-li:.. .._... :..t.. •a:�I� •lit riy•i:1 'l✓r/Aell; r•'Ar,17 •qii y tr... morGem MT,LAuON NIZA EXISTING,1E1LO., • .. .pQ6RNGCQlWTY .rIOT9s O01?WT1- - . • PROPOSED FORESTED CREATION AREA 4i i 0 NTS. bill Gty of Renton Oakesdale Avenue SW Extension Mitigation Site Cross-sections Figure BA5 coho annually. A fisheries enhancement project has been stocking coho salmon in Springbrook Creek since 1995 (cite). Fish counts at the Black River Pumping Station fish ladder have recorded from 47 to 166 adult coho salmon returning during the fall of 1983 to 1990 (Jones & Stokes 1991). Electroshocking in two reaches above and below the project site in June 1998 found 50 three-spined stickleback and two salmonids, a cutthroat trout and a juvenile coho salmon (Watershed Dynamics 1998). These results were after the Washington State Department of Fish and Wildlife had stocked 10,044 coho fingerlings the previous year. No fish surveys, recent or historic, report the presence of chinook salmon in Springbrook Creek. Project Activities and Potential Impacts The proposed project will construct two additional lanes along the east side of the existing utility berm and add a paved sidewalk along the west side. Activities are expected to begin in April 2000 with projected completion by November 2000. The fill required for these improvements will encroach on wetland along the eastern edge of the existing utility berm. Approximately 1.05 acres of Class 1 palustrine scrub/shrub wetland will be filled. A culverted connection between wetlands on either side of the berm will be maintained through a similar to existing culvert to be located at the current crossing. Stormwater detention and treatment facilities will be constructed to meet King County Surface Water Manual 1998 regulations. The maority of roadway runoff will be directed to Phase 1 wetlands created in 1998 north of SW 27mStreet. The runoff capacity of the Phase 1 wetland was designed to accommodate all runoff created by Phase 2 as well as further widening of Oakesdale Avenue adjacent to Phase 1. The smaller portion of runoff not directed to Phase 1 wetlands will be treated and allowed to flow into the wetland to the west of the road. This runoff will then flow to the east through more than 30 acres of wetlands before entering Springbrook Creek. Project activities will not result in sediment transport or increased rates of erosion to Springbrook Creek. The wetlands being impacted by Phase 2 have moderate to high functions and values, as rated by the modified Reppert Method (Reppert et al. 1979). The wetland functions that would be reduced or lost due to project impacts include water quality improvement and wildlife habitat. The upland site proposed for restoration mitigation currently has no wetland function or value due to past roadway construction and dominance of invasive herbaceous species. The indirect impacts that may be anticipated as a result of this project would be increased development of adjoining properties along Oakesdale Avenue SW. ;Lands to the.east, northeast, west and southwest of the project are all regulated wetlands and will not be.developed. To the northwest, the Boeing Master Plan for their lands is not dependent on this project. To the southeast, the Seattle Times property also has adequate access, making any future plans not dependent on the widening of Oakesdale Avenue. The project is designed to aide regional traffic flow and not to provide new access to any properties. Any new construction that may occur will meet King County Surface Water Manual 1998 regulations. Proposed Mitigation The City of Renton's Sensitive Areas Ordinance requires: No net loss of wetlands, Replacement wetlands must be the same Category or higher, A creation/restoration replacement ratio of 1.5:1 combined with enhancement of 2:1 for Category 1 Scrub/Shrub wetlands, and Mitigation must be in the same drainage. The mitigation being proposed will replace the filled wetland along Oakesdale Avenue with a combination of open water and palustrine forest wetland restoration and palustrine emergent/scrub/shrub enhancement(Figures BA5 and BA6). Wetland Type Acreage Open Water restoration 0.3 Forested wetland restoration 1.3 Scrub/shrub and emergent enhancement 2.1 Total 3.7 A 1.6-acre portion of the unused upland roadway will be excavated to below the natural water table. An area of 0.3 acres of the unused roadway would be grubbed out to a depth of 10-12 feet in the vicinity of an existing ephemeral pond and will be retained as open water habitat (Figure BA5,X-section B). The open water being created will expand the existing pond area,potentially providing year-round open water, as well as, providing for enhanced water quality, flood control and recharge/discharge. The remaining 1.3 acres of excavated upland will be filled with forestable soils to a level that will permit development of wetland forest as the dominant vegetation (Figure BA5, X-section C). The east edge of the roadway and configuration of the culvert that separates the two wetlands will be retained so that the hydrology of both existing wetlands will not be modified by mitigation activities. The forest wetland being created will be planted predominantly with coniferous tree species,providing a type of wetland wildlife habitat that has become very limited in the lower Green River basin. An area of 1.3 acres of scrub/shrub enhancement was created in 1998 as excess wetlands mitigation for Phase 1 of the Oakesdale Avenue project and banked for use as mitigation for Phase 2. An additional 0.8 acres of low quality palustrine emergent wetland will be enhanced by live staking of willow and red osier whips into a pure stand of reed canarygrass located in the northwest corner of the wetland between the wetland restoration site and Springbrook Creek(see Figure BA6). A work plan, performance standards, monitoring plan and contingency plan will be developed to ensure that mitigation for lost wetlands and changed functions and values is successful. The mitigation activities outlined above are expected to provide a net gain in wetland functions I , — *-/A i- - - - - , _� , /%;41 ' City of Renton s— ' 0.i 1 'i �//\ti^ I - _ _ Wetland 'C' _ - ! - _ W •1�k: , I Q.• \k\..:'..N01 Phase 1 - - o V' �jii.; Created Wetland (typ.) \� ,, < ����``��Gf PRIVATE a ����\��% DEVELOPMENT - BOEING H Ill"' \1.�v 1 OFFICE {iu \: -/ - _ PARK t ?'%/ Y Jw 1 I'// Excess Enhanced Wetland from W + eI fl,r _ Phase I. Assigned to Phase 2 31 �i _ _ it :`�r��% Mitigation. (tip.) Yo1( ol ce ��% City o/Renton mi f , - •\J Wetland b' i 2: I - -_ -- - SW 27TH sr. iTz---- _ . T I. r HrTT.. City of Renton , Wetland 'E. ....... ....e. i 'i', - - I %. - - - - - _ - - _ - - Boeing Proposed Phos II 'South Marsh' ;->: I 1 Wetland Enhon•ement' I En Phase II Impact Area I. - - 1.05 Acre; • - - . - F'/ I I FI I I i Syr: I City of Renton City of Renton i City of Renton _ _ I Wetland 'F' '.... Wetland '12-b' I Wetland 'if' - ...Va• - - I - - - i�::: - - I - - - ,:.f: s.I Y _ � 5 \\. I City of Renton l if. Ookesdole Avenue .....:1 Wetlandr:C' :j'' Phase II Project Area 1 - _ �I�'� - - - -1 11 • - - - - , p ) li ! I . Proposed Phase I I1I i I i,v _ j Wetland Creation to 1 I I I�' - - - - - a _ 1.6 llcres {I _ - i i l!�!I Existing Ookesdole Ave. y ! Terminus I \ I t LEGEND : 1-7 ExistingWetlands c:� Phase 11 Proposed Enhanced Wetland �% la Phase II Impacted Wetlands M Phase I Created Wetland ha ' 01) Phase II Proposed Created Wetland M Phase I Enhanced Wetland . Gty of Renton Oakesdale Avenue SW Extension Project Wetland Relationships Figure BA6 within two to three years and much higher functions and values in five to seven years. Effects Determinations Chinook Salmon - No chinook salmon are known or expected to be present in the reach of Springbrook Creek that is immediately adjacent or upstream or downstream of the project area and no suitable or critical habitat is present within 1.5 miles. Since some additional stormwater runoff will enter Springbrook Creek after treatment and passing through two 10 acre wetlands it is determined that the project. "may effect, not likely to adversely effect" this species or individuals of this species. Puget Sound Coho Salmon - Puget Sound coho salmon are known to be present in the reach of Springbrook Creek that is immediately adjacent or downstream of the project area. Since the project is expected to result in no measurable change to Springbrook Creek flows and that water quality after completion of this project and its mitigation may be improved relative to existing conditions it is determined that the project will have no measurable impact on and is not likely to jeopardize the continued existence of this species. Summary The City of Renton is proposing to connect the disjunct portion of Oakesdale Avenue S.W. between S.W. 27`h Street and an extension that is located at approximately S.W. 30`h Street. The construction to upgrade this road to four lanes with sidewalk along the west side would impact • 1.05 acres of wetland ecosystems along its eastern edge. The wetland is a Category 1 palustrine shrub/scrub wetland that supports open water,scrub/shrub, emergent and forested wetland types. Mitigation will take the form of restoring approximately 1.6 acres of previously present wetland to Category 1 status and enhancement of 2.1 acres of low quality Category 2 wetlands. Enhanced flood control and recharge/discharge and improved wildlife habitat are the benefits that would be derived from this mitigation. No change is anticipated to flows or quality of surface water into Springbrook Creek. No project activities will take place in or adjacent to Springbrook Creek. No change to vegetation will occur within 200,feet of Springbrook Creek. The results of effects determination for this study are that the project and associated proposed mitigation plans "may effect, not likely to adversely effect"any threatened or endangered animal or plant species or habitat critical for their survival. It is our understanding that this satisfies our responsibilities under Section 7 (c) of the Endangered Species Act at this time, and we are sending you this copy of our assessment for your files. We will continue to remain aware of any change in status of these species and will be prepared to re-evaluate potential project impacts if necessary. To ensure concurrence with these findings,we request that you transmit a letter signifying your agreement with these conclusions. References Harza Northwest,Inc. 1995. Comprehensive fisheries assessment of the Springbrook,Mill and Garrison Creek Watershed for the City of Kent. Prepared for the City of Kent, Environmental Engineering. June 1995. Bellevue,WA. Jones&Stokes,Inc. 1991. City of Renton Critical Areas Inventory of Wetlands and Streams. In association with R.W. Beck Associates,Inc. Bellevue,WA. R.W.Beck and Associates,Inc. 1997. City of RentonEast Side Green River Watershed Project Plan and Environmental Impact Statement. Volume 1. Final. In association with Jones &Stokes,Inc.,Northwest Hydraulic Consultants, and Herrera Environmental Consultants. Seattle,WA. Reppert,R.T.,W.Sigles;E.Stakhiv,L.Messman and C.Meyers. 1979. Wetlands Values: Concepts and Methods for Wetlands Evaluation. Inst.For Water Resources,U.S. Army Corps of Engineers,Fort Belvoir,VA. Res.Rpt. 79-R1. Sandercock,S.K. 1991. Life history of coho salmon.In C. Groot&L.Margolis ed. Pacific salmon life histories. UBC Press,Univ. of British Columbia,Vancouver. Shapiro&Associates,Inc. 1997. Wetlands Technical Report, Oakesdale Avenue SW, SW 16th Street to SW 3151 Street,Renton,WA. Prepared for City of Renton, Planning/Building/Public Works. April 1997. Seattle,WA. Washington Department of Ecology. 1993. Washington State Wetlands Rating Sytem.Western Washington. Second Edition. Publication#93-74. Olympia,WA. Watershed Dynamics,Inc. 1998. Fisheries Report-Springbrook Creek. Letter to Mr.Paul T. Casey,Zelman Development Company,June 12, 1998. Auburn,WA. Weitkamp,L.A.,T.C.Wainwright,G.J.Bryant,G.B.Milner,D.J.Teel,R.Kope,R.S.Waples. 1995. Status Review of Coho Salmon from Washington,Oregon,and California.U.S. Dept. Commer.,NOAA Tech.Memo.NMFS-NWFSC-24. Seattle,WA. Biological Assessment Oakesdale Avenue S.W. Phase 2 Prepared for. U.S. Fish and Wildlife Service 510 Desmond Drive S.E., Suite 102 Lacey,WA 98503-1273 Prepared by: City of Renton Planning/Building/Public Works Department 1055 South Grady Way Renton, WA 98055 September.1999 Introduction As Phase 2 of an ongoing project, the City of Renton is proposing to connect the disjunct portion of Oakesdale Avenue S.W. between S.W. 27th Street and an extension that is located at approximately S.W. 30th Street (Figure BA1). The proposed roadway would be built in part on top of an existing utility berm (METRO sanitary sewer) and in part on filled wetlands immediately adjacent to the utility berm. Approximately one acre of fill needs to be placed in the wetland along the east edge of the utility berm. This fill will provide adequate width for the proposed four-lane roadway and paved pedestrian walkway. Project Location Figure BA2 shows the project location on Oakesdale Avenue SW just south of the new Boeing facilities on the old Longacres Racetrack land. The site occurs within the USGS - Renton Quadrangle at T23N, R4E, Section 25, W. M. The project area is located approximately 1,600 feet west of Springbrook Creek. Approximately one mile downstream Springbrook Creek flows into the old Black River channel and another 3/4 of a mile downstream the Black River flows into the Green River. Threatened and Endangered Species Lists Lists of federal and state listed and proposed threatened and endangered species were requested and received from the National Marine Fisheries Service (NMFS), United States Fish and Wildlife Service (USFWS), Washington Department of Fish and Wildlife (WDFW) and Washington Natural Heritage Program (WNHP) (see Attachment A for copies). The NMFS indicated that chinook salmon (Oncorhynchus tshawytscha) , a threatened species, and its critical habitat may occur near the project. NMFS also stated that Puget Sound coho salmon (O. kisutch), a candidate species for listing may be present near the project. The USFWS indicated no listed species expected to be present, but bull trout (Salvelinus confluentus), a proposed species,-may occur in the vicinity of the project. The WDFW indicated that coho salmon and cutthroat trout (O. clarki) were the only Priority species known to be,present in the Black River drainage and no terrestrial or avian species of concern were known to occur within a one and one-half mile radius of the site. The WNHP had no known locations for listed plant species in the vicinity of the project. Surveys conducted by qualified biologists for state listed threatened or endangered plant and animal species that occur in King County found nothing. Bull Trout - The bull trout is a native fish in some waters of Washington. Quantity and/or quality of rearing and overwintering habitats appear to be the limiting factors. Bull trout generally spawn in September and October when water temperatures decline to'5° to 9° C. Shepard (1985) lists spawning site characteristics as: higher order streams (third and fourth order), stream bed composition with a low percentage of boulders and greater amounts of gravel and rubble, low channel gradients, areas of overhanging bank cover, maximum stream temperatures of less than 18°C, and areas of groundwater recharge. Mean water depths over bull trout redds are reported to be 0.3 to 1 meter. Rearing habitat is generally shallow, low velocity, S eo10 �� .�o R sw s • se G .X13:\ \ • \. .* <-• 111115 _ / \ i I / : Wa r i S' M ;'. • : 3'9A G • • Tukw 1 . •-� a ii „, \.� gif: /A 16th,s �! . -41t ,I p • Rentonif Begin _. Q fl Project A, Strandan Blvd \ SW 27th St End co 2 CISa / s , • Project ;sw 30fh St & a. •PProxlmatel ., ` . a) sw 3 4th St i ., a :' I it / c W f to ' 5 o . f i ...____ 'a , ` SW 41st St . L . n S y ..,SkV,�iii.Si.. co g \ , i , I' Kent ei . i i i 1 ----„. E , \ . 41 cl: bill Gty of Renton Oakesdale Avenue SW Extension A Vicinty Map NO SCALE Figure BAt o . . .......... r.• ;. _`_ g - . 'f West Valle HI:hway ,..., ..» . _. .»_.._»».»„».».._._.....»..»...»..»»»»»»»..».»»...»»»»�nian Pail3ti Rai�rood�.».».. .......».».....».. .»._.»... . ... ................... r' ` ""--: ..............»........................................................... Bs�nglon NoHhorn Santa Fa : . ..• .,. ... r'fs.pa6uol • _. ::. ....... , fai 1 .:. .: :.. 1 . .. . • , 1 \ ...,.....„--,.0.. ... ..... .: . t . c, r ) -0 ■ Oak•sdala Ave SW �` ■ Oakasdola Ave SW I • S a i cob S t 0 N find Avo S O A East Valle Rd A 1111F 4111 e Si . 3 a .12 co �0 � a `t " r AaAm � o > Cr backwater channels or eddies associated with large woody material in the stream (Shepard et al. 1984, Elliott 1986, Ratliff 1987). Adult bull trout are bottom dwellers, preferring deep pools, moderate to fast currents, and cold water(generally not warmer than 10°C). There are no current documented records of bull trout occurring in Springbrook Creek above the Black River Pumping Station. There currently is no suitable habitat for bull trout spawning or rearing and no suitable deep pool habitat for adult bull trout in Springbrook Creek adjacent to or upstream from the project area. Current Existing Conditions The project site currently has a utility berm for King County METRO sanitary sewer connecting Oakesdale Avenue between SW 27 and SW 30th Streets (Figure BA2). Springbrook Creek is located approximately 1,400 feet to the east. During the wettest periods of the year there is very low surface water flow (observed 0.1cfs in April/May 1999) through these.two wetlands into Springbrook Creek. No water quality information is available,but outflow quality is assumed to be relatively high as a result of wetland functions. The wetlands report for Phase I of the Oakesdale Avenue improvements delineated palustrine scrub/shrub wetlands on both sides of the METRO utility berm to the south of SW 27th Street (Shapiro & Assoc. 1997). These two wetlands are connected by a 48-inch pipe that allows for free interchange of water, fish, or other organisms. Based on the Washington Department of Ecology Wetland Rating System (WDOE 1993) these two wetlands actually constitute a single entity. Under the City of Renton's Sensitive Areas Ordinance, since the total wetland area is greater than 10 acres in size,contains open water,.and palustrine forested, palustrine scrub/shrub and palustrine emergent vegetation types, this area qualifies as a Category 1 wetland. It is classified as palustrine scrub/shrub because it is not hydrologically connected to a stream or river, it has less than 20 percent forest overstory and the area is predominantly vegetated by wetland shrub species or young trees less than 20 feet tall. See Figure BA3 for the location of area wetlands. The proposed mitigation site is located about 900 feet to the east of the wetland that would be impacted. The 2-acre upland mitigation site (Figure BA4) is an old, -unused roadbed (approximately 10 to 12 feet thick) was originally built across wetlands (Figure BA5, X-section A): It currently supports black cottonwood of various ages and an understory of Himalayan blackberry,nettle and assorted other disturbance species. Approximately midway down this road a small culvert (18" dia. and 2-3-foot drop) allows surface waterr to flow from west to east, but not back. The wetland enhancement portion of the proposed mitigation is a degraded site supporting a Class 2 wetland having palustrine scrub/shrub and emergent vegetation types. An area of 1.3 acres was enhanced as excess wetland mitigation in 1998 during Phase 1 of the Oakesdale Avenue improvement project and banked to meet future project mitigation needs. An additional 0.8 acres of degraded Category 2 wetland will be enhanced in the northwest corner of the wetland between the mitigation upland berm and Springbrook Creek. : . .,. — ,- n, t N , _ '{ •n ;•:tee" i r ' ` SW Dili-St t ' ,- r " , ' • 1 ': , - Apt Fv i ; = 6, ifil , - '...1=ksg t '-:. '... . , .... ,.), „K., ; ' • l .Ss� L�4!_ • '( A� we}laid„Cn ; ; is �a . t' i.---..t_,_� - , a:�: — Fe, `• TUKV LA " ' Q =F" T _ €i:Il "' .... ticnd ".-..,.a.- .'•- ",.•1/4•.::.I:.•.'•..:..-...,.44.',•... ',—„t-_,-.,. 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J.•!;•ti• ,•,ti• t i •t•:t 3••' .1� s: •`fi: 1/r., r:. tj .. ,'; tsi:�.;,1 .s:•, •%I •."rr.. 1. •, 1•.i ...'l s✓::4. ? .t.. .;:.• i' . . }'.:i•. •L•.,.. •%i.�' ♦fir• •ir+i, ifi.♦. j •3 •!••'y!� .f t 1: t:l•1 • y ! tr' •y't A. •t: .. 'ti } .i..t• i•.• ~' v t:; t' •' }. 1•i•. :'i'•r. :. •t.r. C ♦..•! .r 4• ..,..s::•f.(. , At l •.,r'> .•ir. .":;. •s• .f.:i . •• , :ti' :•ti �.• � ` s ' '�r:t.l l,.,, ..f. '•rf •.}y +....j• i l• t ' . '' •••s. c." •;;i a La in a ; �� : WETLAND a t. i'.• ; ,�.: :.: m a :CAI C Po LIU A - A00 -Z.�-•co 0 p ED > Y Y )1 r 1 : N UETLA1 D UlC-LAND O EXISTING CONDITIONS N.T.5. irpr ''S, v, — ' !0 Y PROPOSED OPEN WATER CREATION AREA „ +e: :: , . . IbBRNf.OQrilGtt .se „..m. maxim AREA EXI51,0 imam ®POPO5ED FOESTED CREATION AREA ft� Gty of Renton Oakesdale Avenue SW Extension Mitigation Site Cross-sections Figtre BA5 Springbrook Creek Springbrook Creek drains a watershed subbasin of about 24 square miles into the Black River Channel before entering the Green River. The Black River Pumping Station was constructed in 1972 at the mouth of the Black River to prevent waters from the Duwamish/Green River from backing up into the old Black River channel and Springbrook Creek (Harza Northwest 1995). A seasonally operated fish ladder was installed at the pump station. Adjacent to the project site Springbrook Creek has been straightened and channelized and is periodically dredged to control invasive vegetation and sedimentation. Summer low-flows of about 1.5 cubic-feet/second have been measured just upstream from the project area (Harza Northwest 1995). An inventory of stream habitat in Springbrook Creek(Jones &Stokes 1991)indicated that within the project area bank vegetation is dominated by grasses and a few shrubs. From mid-morning to late afternoon there is no shading of the stream. This section of the creek is characterized by poor water quality (high sediment loads, high temperatures and low dissolved oxygen) and provides very limited habitat for salmonids. Although suitable spawning habitat is present in upper tributaries, sediment buildup and poor water quality combine to eliminate the lower reaches of Springbrook Creek for spawning(R.W.Beck&Assoc. 1997). A second fisheries report for this general region of Springbrook Creek describes the habitat as generally poor for salmonids and its being used primarily as a migration route (Watershed Dynamics 1998). They stipulated that some rearing may occur in early spring when water temperatures are suitable, but fish do not appear to spend extended periods of time in this channelized section of the creek. No pools, riffles or large woody debris are present in this reach of the riparian corridor. Coho salmon have been stocked in Springbrook Creek and its tributaries since 1976. Between 1981 and 1992, an average of 96,000 coho salmon fingerlings were released upstream in Mill Creek (Harza Northwest 1995). Since 1992, stocking in Mill Creek has been reduced to 50,000 coho annually. A fisheries enhancement project has been stocking coho salmon in Springbrook Creek since 1995. Fish counts at the Black River Pumping Station fish ladder have recorded from 47 to 166 adult coho salmon returning during the fall of 1983 to 1990 (Jones.& Stokes 1991). Electroshocking in two reaches above and below the project site in June 1998 found 50 three-spined stickleback and two salmonids, a cutthroat trout and a juvenile coho salmon (Watershed Dynamics 1998). These results were after the Washington State Department of Fish and Wildlife had stocked 10,044 coho fingerlings the previous year. No fish surveys, recent or historic, report the presence of bull trout in Springbrook Creek. Project Activities and Potential Impacts The proposed project will construct two additional lanes along the east side of the existing utility berm and add a paved sidewalk along the west side. Activities are expected to begin in April 2000 with projected completion by November 2000. The fill required for these improvements will encroach on wetland along the eastern edge of the existing utility berm. Approximately 1.05 acres of Class 1palustrine scrub/shrub wetland will be filled. A culverted connection between wetlands on either side of the berm will be maintained through a similar culvert to be located at the current crossing. Stormwater detention and treatment facilities will be constructed to meet King County Surface Water Manual 1998 regulations. The majority of roadway runoff will be directed to Phase 1 wetlands created north of SW: 27th Street. The runoff capacity of the Phase 1 wetland was designed to accommodate all runoff created by Phase 2 as well as further widening of Oakesdale Avenue adjacent to Phase 1. The smaller portion of runoff not directed to Phase 1 wetlands will be treated and allowed to flow into the wetlands to the west of the new roadway. This runoff will then flow to the east through more than 30 acres of wetlands before eventually entering Springbrook Creek. Project activities will not result in sediment transport or increased rates of erosion to Springbrook Creek. • The wetlands being impacted by Phase 2 have moderate to high functions and values, as rated by the modified Reppert Method (Reppert et al. 1979). The wetland functions that would be reduced or lost due to project impacts include water quality improvement and wildlife habitat. The upland site proposed for restoration mitigation has no wetland function or value due to past roadway construction and dominance of invasive herbaceous species. The indirect impacts that may be anticipated as a result of this project would be increased development of adjoining properties along Oakesdale Avenue SW. Lands to the east, northeast, west and southwest of the project are all regulated wetlands and will not be developed. To the northwest, the Boeing Master Plan for their lands is not dependent on this project. To the southeast, the Seattle Times property also has adequate access, making any future plans not dependent on the widening of Oakesdale Avenue. The project is designed to aide regional traffic flow and not to provide new access to any properties. Any new construction that may occur will meet King County Surface Water Manual.1998 regulations. Proposed Mitigation The City of Renton's Sensitive Areas Ordinance requires: No net loss of wetlands, Replacement wetlands must be the same Category or higher, A creation/restoration replacement ratio of 1.5:1 combined with enhancement of 2:1 for Category 1 Scrub/Shrub wetlands, and Mitigation will be in the same drainage. The mitigation being proposed will replace the filled wetland along Oakesdale Avenue with a combination of open water and palustrine forest wetland restoration and palustrine scrub/shrub enhancement(Figures BA5 &BA6). Wetland Type Acreage Open Water restoration 0.3 Forested wetland restoration 1.3 Scrub/shrub and emergent enhancement 2.1 Total 3.7 A 1.6-acre portion of the unused upland roadway will be excavated to below the natural water table. An area of 0.3 acres of unused roadway would be grubbed out to a depth of 10-12 feet in the vicinity of an existing ephemeral pond and will be retained as open water habitat (Figure BA5,X-section B). The open water being created will expand the existing pond area,potentially providing year-round open water, as well as,providing for enhanced water quality, flood control and recharge/discharge. The remaining 1.3 acres of excavated upland will be filled with forestable soils to a level that will permit development of wetland forest as the dominant vegetation (Figure BA5, X section C). The east edge of the roadway and configuration of the culvert that separates the two wetlands will be retained so that the hydrology of both existing wetlands will not be modified by mitigation activities. The forest wetland being created will be planted predominantly with coniferous tree species,providing a type of wetland wildlife habitat that has become very limited in the lower Green River basin. An area of 1.3 acres of scrub/shrub enhancement was created in 1998 as excess wetlands mitigation for Phase 1 of the Oakesdale Avenue project and banked for use as mitigation for Phase 2. An additional 0.8 acres of low quality palustrine emergent wetland will be enhanced by live staking of willow and red osier whips into a pure stand of reed canarygrass located in the northwest corner of the wetland between the wetland restoration site and Springbrook Creek(see Figure BA6). A work plan,performance standards,monitoring plan and contingency plan will be developed to ensure that mitigation for lost wetlands and changed functions and values is successful. The mitigation activities outlined above are expected to provide a net gain in wetland functions within two to three years and much higher functions and values in five to seven years. Effects Determinations Bull Trout -Since no bull trout are known or expected to be present in the reach of Springbrook Creek that is immediately adjacent, upstream or downstream of the project area and no suitable habitat is present,it is determined that the project will have"No Effect"on this species. Summary The City of Renton is proposing to connect the disjunct portion of Oakesdale Avenue S.W. between S.W. 27th Street and an extension that is located at approximately S.W. 30th Street. The construction to upgrade this road to four lanes with sidewalk along the west side would impact 1.05 acres of wetland ecosystems along its eastern edge. The wetland is a Category 1 palustrine shrub/scrub wetland that supports open water, scrub/shrub, emergent and forested wetland types. __ • � \-044 %� i I City of Renton '��\ r \ - - - Wetland 'C� - - �;;':':NOr Phase I - i vo ---Zo Created Wetland (tip.) s �"-''.`-" -PRIVATE I a `�_�:% DEVELOPMENT ----(- 3 �•0 BOEING In it i ;���ii t%' OFFICE , zf`-{�� _ PARK 1 < :I �, �� W; . - W • / p Excess Enhanced Wetland from W ')! < �i%�- M Phase 4' Assigned to Phase 2 c�i II In \r//�a' 6 Mitigation. (tip.) ! a 1 f - - - - p ��/ City of Renton I m; " Wetland b' I 2? - 1, _ _ _ _i _ _ , ` _ - - _ _ _ - SW 27TH ST. (-_../--- _ _ 1eT - - 3ii,...„...: ..„,...„ I_ 1„----_ I 1-"------ 1 _ City of Renton , f� Wetland C Jr , . %f I f I Boeing Proposed Pha II South Marsh' '-: - - - - - - II Wetland Enhancement • •• _ - ;;n I . .s i p I Phase II Im act Area t::1 I ! . . - 1.Q5 Acre , . - , . - - - ! - - 1 - - - - :Zi - - - - 3 : f City of Renton .. City of Renton ! I City of Renton b • 3: - - j Wetland 'K' •- _ Z'�� -Wetland 'i2-b` 1 Wetland '11'` • �i I - - - - %5 IZZZZZZZZI _ _ ZZZZI City of Renton lii Oakesdale Avenue ....• Wetland 'G' %! Phase ll Project Area I „i I (rill - - - - 1 - - - - i - _ Trull -I ;``;4 -f _ - 11 - - - I Proposed Phase-1! i - 1 ly _ I i Wetland Creation fe j _ - _ it iTri' I Existing Oakesdole Ave. y • Ii wt. Terminus II LEGEND nExisting Wetlands Phase II Proposed Enhanced Wetland t% f/ Phase U Impacted Wetlands N Phase I Created Wetland Phase U Proposed Created Wetland V Phase I Enhanced Wetland Gty of Renton Oakesdale Avenue SW Extension Project Wetland Relationships Figure BA6 Mitigation will take the form of restoring approximately 1.6 acres of previously present wetland to Category 1 status and enhancement of 2.1 acres of low quality Category 2 wetlands. Enhanced flood control and recharge/discharge and improved wildlife habitat are the benefits that would be derived from this mitigation. No change is anticipated to flows or quality of surface water into Springbrook Creek. No project activities will take place in or adjacent to Springbrook Creek. No change to vegetation will occur within 350 feet of Springbrook Creek. The results of effects determination for this study are that the project and associated proposed mitigation plans will have "no effect" on bull trout or habitat critical for their survival. It is our understanding that this satisfies our responsibilities under Section 7 (c) of the Endangered Species Act at this time, and we are sending you this copy of our assessment for your files. We will continue to remain aware of any change in status of these species and will be prepared to re-evaluate potential project impacts if necessary. To ensure concurrence with these findings,we request that you transmit a letter signifying your agreement with these conclusions. References Harza Northwest, Inc. 1995. Comprehensive fisheries assessment of the Springbrook, Mill and Garrison Creek Watershed for the City of Kent. Prepared for the City of Kent, Environmental Engineering. June 1995. Bellevue,WA. Jones &Stokes,Inc. 1991. City of Renton Critical Areas Inventory of Wetlands and Streams. In association with R.W, Beck Associates, Inc. Bellevue,WA. R.W. Beck and Associates,Inc. 1997. City of RentonEast Side Green River Watershed Project Plan and Environmental Impact Statement. Volume 1. Final. In association with Jones &Stokes,Inc.,Northwest Hydraulic Consultants, and Herrera Environmental Consultants. Seattle,WA. Reppert,R.T.,W. Sigles,E. Stakhiv,L.Messman and C.Meyers. 1979. Wetlands Values: Concepts and Methods for Wetlands Evaluation. Inst.For Water Resources,U.S. Army Corps of Engineers,Fort Belvoir,VA. Res.Rpt. 79-R1. Sandercock, S.K. 1991. Life history of coho salmon.In C. Groot&L. Margolis ed. Pacific salmon life histories. UBC Press,Univ. of British Columbia, Vancouver. Shapiro &Associates,Inc. 1997. Wetlands Technical Report, Oakesdale Avenue SW, SW 16th Street to SW 31S`Street,Renton,WA. Prepared for City of Renton, Planning/Building/Public Works. April 1997. Seattle,WA. Washington Department of Ecology. 1993. Washington State Wetlands Rating Sytem. Western Washington. Second Edition. Publication#93-74. Olympia,WA. Watershed Dynamics,Inc. 1998. Fisheries Report-Springbrook Creek. Letter to Mr. Paul T. Casey,Zelman Development Company,June 12, 1998. Auburn,WA. Weitkamp,L.A.,T.C.Wainwright, G.J.Bryant,G.B. Milner,D.J.Teel,R. Kope, R.S.Waples. 1995. Status Review of Coho Salmon from Washington,Oregon, and California. U.S. Dept. Commer.,NOAA Tech. Memo.NMFS-NWFSC-24. Seattle,WA. Appendix E Wetland Technical Report Oakesdale Avenue S. W. S.W. 27th Street to S.W. 30th Street Renton, Washington Abstracted by: Kato & Warren, Inc. 2003 Western Avenue 555 Market Place One Seattle, Washington 98121 From a report prepared by: HNTB Corporation 600 108th Avenue N.E., Suite 405 Bellevue, Washington. 98004 August 1999 Table of Contents 1. INTRODUCTION 1 1.1 Roadway Project:Overview 1 1.2 General Site Description 1 1.3 Wetland Authority 1 2. OBJECTIVE 2 3. METHODS 2 3.1 Literature Review 2 3.2 Site-Specific Investigation 2 3.2.1 Vegetation 3 3.2.2 Soils 4 3.2.3 Hydrology 5 3.2.4 Wetland Determination 6 3.2.5 Wetland Delineations 7 3.2.6 Wetland Functions and Values 8 4. LIMITATIONS OF THIS REPORT 9 1. INTRODUCTION 1. 1 Roadway Project Overview Oakesdale Avenue SW,a major north-south thoroughfare within the City of Renton,Washington,is a discontinuous road.The existing road extends southward under Interstate 405 and terminates at SW 27th Street.It then is discontinued for about 1,200 feet and then begins again near SW 31st Street.Traffic must use alternate north-south routes,with Lind Avenue to the east being the most predominantly used among these alternatives.The City of Renton is proposing to construct a roadway to link these discontinuous sections of Oakesdale Avenue SW. Because wetlands are present within the proposed roadway project area,a wetland investigation was performed.This jurisdictional wetland delineation report provides a description of the methods used and the results of wetland investigations on the proposed project site. 1.2 General Site Description The proposed roadway project area lies in the City of Renton portion of the Green River Valley between SW 27th Street on the north and the existing terminus(cul-de-sac)of Oakesdale Avenue SW on the south (see Figures 1 &2). Springbrook Creek generally flows from south to north along the east side of the roadway project area.The roadway project area(south of SW 27th Street)is undeveloped land,and includes Boeing Longacres Office Park dedicated wetlands and an area the City of Renton has set aside for a wetland mitigation bank. 1.3 Wetland Authority Activities that would be carried out in wetlands are regulated both by the federal government and local jurisdictions.The following paragraphs describe how this authority over wetlands is organized. Pursuant to the Clean Water Act and through the Section 404 permitting process,the U.S. Army Corps of Engineers(Corps)has been given the responsibility and authority to regulate the discharge of dredged or fill materials into waters and adjacent wetlands of the United States(Federal Register, 1986). The following definition is used by the Corps and other federal agencies for administering the Section 404 permit program(Federal Register, 1980, 1982): 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. In addition,the City of Renton has the responsibility and authority to regulate development activities in wetlands and their buffers in accordance with the City of Renton Wetlands Management Ordinance(Title IV,City of Renton Building Regulations,Chapter 32).The City of Renton uses the following definition of wetlands: Those lands transitional between terrestrial and aquatic systems that are inundated or saturated by ground or surface water at a frequency and duration sufficient to support and,under normal circumstances,do support a prevalence of vegetation typically adapted for life in saturated soil conditions. It should be noted that the City of Renton does not regulate drainage ditches as wetlands,under their wetlands ordinance,but the Corps does regulate drainage ditches as wetlands if they meet the wetland criteria. Page 1 SR sQo sws, 1 ' 's \ ,, / \ _, - : it,./ \ 1, , k' C.) M .. . : t Tuki,L1 : . _ r • ____ Ren on\RA- •.. Big: it'. ,w � �• 1 c'T %, ,,r L.....,. CI> 75' 111 4 Begin `' �► r P ( \ io' Strands Btvd SW 27th St I .. End 1I a I �^ I 4 Project :SW 30th St �' C ( 3 la) (APProxlR )Q I. \ . a SW 34th St 5 I - 3 _ %' 5 w N Z 10 f ` sw41at$t I . 180th IS �' �+ .3V !�-. Y _SW,Alrti At \ to -1 i Kent j 43 1.,,, �(r 1 \ ..c -1 1s II .. ,1 cm ma Gty of Renton A Oakesdaie Avenue SW Extension Vicinty Map NO SCALE Figure 1 a e p r C 2 rIH .. 1 O v N a Ail i 13- .1©"....."1 . v -v a o vi‘r Pi Pe `,•A � O s GAY Pull 1 NN4.:., N N i LL Y II II i MS"V•i a •Ar w°ps•I°o d I :. aS I i J . . . • M ........, ai DIPS U j4JON 110464'•8..._ P°°f • oil °d.°0!°�.-.........»............................•............................- . ..m. A.Nibm a 2. OBJECTIVE U.S.Army Corps of Engineers and City of Renton regulations require that the presence and extent of wetlands be determined within a project development area using jurisdictional methods so that the effects of development plans on wetlands can be assessed before project development.This report meets the requirements for both the Corps and the City of Renton. The presence and extent of wetlands on The Boeing Company's Longacres property(former Longacres Racetrack site)have been examined under two development proposals: the Customer Services Training Center(CSTC)and Longacres Office Park.For the purposes of evaluating the Oakesdale Avenue SW roadway alternatives in the EIS that is being prepared for the roadway project,existing information on wetlands within the Boeing Company's property was determined to be sufficient.Thus,the portion of the roadway project area within The Boeing Company's property would not be re-delineated.When the Oakesdale Avenue SW roadway project reaches the permitting stage for the selected alternative,it is possible that new onsite delineations will be required within The Boeing Company's property.This is because much of the existing wetland information is based on delineations that were conducted and field . verified by the Corps in 1991 and 1992.For permitting purposes,the Corps allows previous delineations to be used for a period of 5 years after the field verification had been conducted.The City of Renton will accept wetland delineations for a period of two years.Therefore,when the project reaches the permitting stage it is possible that the existing information may no longer be accepted. For those portions of the roadway project area lying outside The Boeing Company's property,onsite wetland delineations were conducted. 3.METHODS Both the Corps and the City of Renton require that site specific wetland investigations be conducted using methods outlined in jurisdictional wetland delineation manuals.The Corps requires use of the Corps of Engineers Wetlands Delineation Manual(Environmental Laboratory, 1987),referred to as the 1987 Manual,to determine the presence and extent of wetlands. Prior to June 1995,the City of Renton. required use of the Federal Manual for Delineating Jurisdictional Wetlands(Federal Interagency Committee for Wetland Delineation, 1989),commonly referred to as the Unified Federal Method or 1989 Manual,to determine the presence and extent of wetlands. The City of Renton currently uses the 1987 method. 3.1 Literature Review Prior to this,and the former wetland investigations,a literature review was conducted.The following documents were used to gather preliminary information about the vegetation,soils,and hydrologic characteristics of the site. • King County Sensitive Areas Map Folio. King County Council, 1990. • National Wetlands Inventory,Renton,Washington Quadrangle.U.S.Fish and Wildlife Service, 1988. • Soil Survey of King County Area, Washington. Soil Conservation Service, 1973. • Hydric Soils of the United States. Soil Conservation Service, 1987. 3.2 Site-Specific Investigation Page 2 The proposed roadway lies within the relatively flat Green River Valley. Springbrook Creek,a tributary to the Green River,flows generally northward along the east edge of the roadway area. This area consists of lower-lying,seasonally to perennially inundated ground that is vegetated with a mix of grasses, shrubs, and deciduous trees.The following paragraphs describe the methods used in the site-specific wetland investigations. A Comprehensive Onsite Determination Method,as described in the 1987 Manual,and an Intermediate level Onsite Determination Method,as described in the 1989 Manual,were used for the January 1995 Wetland delineations and the previous CSTC and Longacres Office Park wetland investigations,to determine wetland boundaries in the Oakesdale Avenue SW roadway study area.Using these methods, vegetation,soils,and hydrology parameters were examined for wetland characteristics. Representative sampling plots were established in the central portion of areas with homogeneous vegetation.A homogeneous area of vegetation is composed of one or more species of grass that make up a distinctive plant community.If an area of homogeneous vegetation extended over a range of topographic levels,a sample plot was located within each topographic level.At each sample plot, vegetation,soils,and hydrology data were collected and recorded on a data form. After several plots were investigated,plant communities of similar composition and character were identified.Where these plant communities reoccurred,additional sample plots were not deemed necessary to accurately determine the presence and extent of wetland areas.Wherever new plant communities occurred or community composition varied,additional sample plots were established and the sampling procedure repeated. 3.2.1 Vegetation Wetland plants are specifically adapted for life in saturated or anaerobic conditions.Such plants are described as hydrophytic.The Corps and the U.S.Fish and Wildlife Service have determined the frequency of various plant species'occurrence in wetlands and have assigned an"indicator status"to each species.Accordingly,plants may be categorized as obligate(OBL),facultative wetland(FACW), facultative(FAC),facultative upland(FACU),or upland(UPL).A plus(+)or minus(-)sign after the FACU,FAC,and FACW categories specifies a higher or lower frequency of occurrence in wetlands. Within the range of each category,a plus indicates more frequent occurrence in wetlands;a minus indicates less frequent occurrence in wetlands. Species with an indicator status of OBL,FACW,or FAC are considered adapted for life in saturated or anaerobic soil conditions.Definitions for each indicator status are listed in Table 1. At each sample plot,vegetation was described by estimating the cover of each plant species occurring within the herb,shrub,and tree layers.Trees and shrubs within a 30-foot radius and herbs within a 5foot radius of the center of the plot were identified and recorded on the data form.All species within the plot were recorded in descending order of abundance,and dominant species were determined.Dominant species are those that,when cumulatively totaled in descending order of abundance,immediately exceed 50%of the areal cover for each vegetative layer.Species considered to be dominant also include those individually representing 20%or more of the total areal cover for each vegetative layer.The indicator status of dominant species within each vegetation layer were used to determine the presence of wetland vegetation. Page 3 Table 1 Categories of Indicator Status for Vegetation Species Indicator Symbol Definition OBL Obligate.Species that almost always occur(estimated probability >99%)in wetlands under natural conditions. FACW Facultative wetland.Species that usually occur in wetlands(estimated frequency 67 to 99%),but occasionally are found in nonwetlands. FAC Facultative. Species that are equally likely to occur in wetlands or nonwetlands(estimated probability 34 to 66%). FACU Facultative upland.Species that usually occur in nonwetands(estimated probability 67 to 99%),but occasionally are found in wetlands. UPL Upland.Species that occur almost always in nonwetlands under normal conditions(estimated probability>99%). NI No indicator.Species for which insufficient information was available to determine an indicator status. Sources:Federal Interagency Committee for Wetland Delineation,1989;Reed,1988 A sample plot was considered to have wetland vegetation if more than 50%of the dominant species had an indicator status of FAC,FACW,•or OBL. In addition,if 25 to 50%of the dominant species were OBL, FACW,and/or FAC,and hydric soils and wetland hydrology were present,the area was considered a "problem area wetland,"and the vegetation was identified as hydrophytic. 3.2.2 Soils One characteristic of wetlands is hydric soils. Hydric soils are defined as soils that are saturated,flooded, or ponded long enough during the growing season to develop anaerobic conditions in the upper part of the soil profile(U.S.Soil Conservation Service, 1987).The growing season in the Puget Sound lowlands is generally recognized as the period between March 1 and October 31 when soil temperatures are usually above biological zero(5 degrees Celsius).The Soil Conservation Service(SCS),now known as the National Resources Conservation Service,in cooperation with the National Technical Committee for Hydric Soils,has compiled a list of hydric soils in the United States.This list identifies soil series mapped by the SCS that meet hydric soil criteria.A map unit of upland(nonwetland)soil may have inclusions of hydric soil,and vice versa.These inclusions may not be delineated on the SCS maps;therefore,field examination of soil conditions is important to determine if inclusions of hydric soil exist. Because of wet,anaerobic conditions,hydric soils exhibit certain characteristics that can be observed in the field.Such characteristics or indicators include the following:high organic content,accumulation of sulfidic material,greenish or bluish gray color(gley formation),spots or blotches of orange color (mottling),and/or dark soil colors(low soil chroma). Hydric soil indicators are summarized in Table 2. Page 4 Table 2 Hydric Soil Indicators Hydric Indicator Diagnostic Criteria Organic content >50%by volume. Sulfidic material "Rotten egg"odor. Soil color Mottling;dark soil matrix color,gleyed colors. Water saturation In poorly drained soils or very poorly drained soils with low permeability,groundwater table is less than 18 inches from the surface for a significant period(usually a week or more)during the growing season. Sources:Federal interagency Committee for Wetland Delineation,1989:U.S.Soil Soil samples were obtained at each representative sampling plot either by digging a soil pit or by using a soil auger to excavate down to a depth of at least 18 inches. Soil samples were then examined for hydric indicators.Organic content was estimated visually and texturally;sulfidic material was determined by the presence of sulfide gases("rotten egg"odor);and soil colors were determined by using a Munsell soil color chart(Munsell Color, 1988).Munsell soil color charts standardize soil color by using three color components:hue,value,and chroma.Soil colors are assigned both common names(e.g.,dark grayish brown)and standardized Munsell color notations for hue,value,and chroma(e.g., 107YR 4/2). Additionally,if soils were observed to be saturated within 18 inches of the surface during the growing season,and if saturation had likely been present for several weeks or months during the growing season, soils were identified as hydric based on an assumed aquic soil moisture regime. Hydric soils were assumed to be present in any sampling plot where evidence of wetland hydrology was present,and the vegetation community consists of either all dominant species with an indicator status of obligate,or all dominant species with an indicator status of facultative wetland or obligate and an abrupt wetland boundary. In those areas,soil data often were not collected. 3.2.3 Hydrology Water must be present for wetlands to exist;however,it need not be present throughout the entire year. Wetland hydrology is considered to be present when there is permanent or periodic inundation or soil saturation for a significant period(usually a week or more)during the growing season(Federal Interagency Committee for Wetland Delineation, 1989). Indicators of wetland hydrology were examined at each sampling,plot. Such indicators include areas of ponding or soil saturation,drainage patterns,and evidence of previous inundation or saturation,such as dry algae on bare soil or soil mottling along live root channels. Where positive indicators of wetland hydrology were observed,wetland hydrology was assumed to occur for a significant period of the growing season. Table 3 summarizes some of the hydrologic regimes that can be encountered and their wetland characteristics. Page 5 Table 3 Hydrologic Regimes and Wetland Characteristics Duration of Inundation Wetland Degree of Inundation or Saturation or Saturation* Characteristics Permanently inundated** 100% present Semi-permanently to nearly permanently >75%-<100% present inundated or saturated*** Regularly inundated or saturated >25%-<75% usually present Seasonally inundated or saturated > 12.5%-<25% often present Irregularly inundated or saturated >5%-<12.5% often absent Intermittently or never inundated or <5% absent Saturated • 'percent of growing season -inundation>6.61t mean water depth anundatlon<or=6.6 ft mean water depth Sources Environmental Laboratory,1987.Clark and Benforado,1981 3.2.4 Wetland Determination Vegetation,soil,and hydrology data for each sampling plot were examined to determine the presence or absence of wetlands. If all three parameters exhibited wetland characteristics,or normally would have exhibited wetland characteristics for a significant period(usually one week or more)during the growing season,then a positive wetland determination was made for that area of homogeneous vegetation cover represented by the sampling plot.If any one of the parameters did not exhibit positive wetland indicators, the area was determined to be upland(nonwetland),unless problem or disturbed areas were encountered. In disturbed areas,field indicators of one or more of the three wetland parameters are obliterated or absent because of some recent change.Disturbed areas include both wetlands and nonwetlands that have been modified to varying degrees by human activity(e.g.,clearing of original vegetation,filling,or excavation) or natural events(e.g.,avalanches,mudslides,fire,volcanic deposition,and beaver dams).In determining if a disturbed area is a wetland,both onsite observations and offsite research can be used.Historical records,aerial photographs,and preexisting soil surveys and wetland or vegetation inventories can reveal previous undisturbed conditions.Recent onsite observations may reveal remnants of parameters (vegetation,soils,and the presence or absence of hydrologic indicators)that were later lost to disturbance. In addition,undisturbed areas adjacent or nearby may be used as reference sites to determine the former undisturbed conditions of the project site. In problem areas,it is difficult to determine if an area is a wetland because field wetland indicators may be absent at certain times of the year.The difficulty in identification is generally related to normal environmental conditions and is not the result of human activities or catastrophic natural events,as is the case with disturbed areas.Examples of problem areas include wetlands on glacial till,highly variable seasonal wetlands,and wetlands where only 25 to 50%of the dominant plants are OBL,FACW,and/or FAC,but the area contains hydric soils and hydrologic indicators.Artificial wetlands are included in this Page 6 category because their identification presents problems similar to natural problem area wetlands(Federal Interagency Committee for Wetland Delineation, 1989). 3.2.5 Wetland Delineations Additional wetland delineations were conducted in 1995 on the portions of the roadway project that were not previously studied. Numerous wetlands were delineated within the former racetrack area. These wetlands lie outside the Phase 2 roadway project area and are not discussed here. Wetlands investigated in the 1995 delineation that are located south of SW 271 Street within the current project were referred to as Wetlands E,F and G(See Figure 3). Wetlands within 100 feet of the proposed roadway alignment were delineated. In all cases the wetlands extend beyond the 100-foot corridor that was delineated. Table 4 lists the plant species found in these three wetlands and shows the wetland indicator status of each. Table 4. List of the Observed or Planted Plant Species in Wetlands Fy F&Gin the Oakesdale Avenue SW Project Area Wetland Scientific Name Common Name Indicator Status* Trees: Alnus rubra red alder FAC Populus trichocarpa black cottonwood FAC Thuja plicata western redcedar FAC Shrubs and Small Trees: Alnus rubra red alder FAC Comics stolonifera red-osier dogwood FACW Rhamnus purshiana cascara FAC Rosa nutkana Nootka rose FAC Rubus discolor Himalayan blackberry FACU Salix sp. willow OBL FACU Spiraea douglasii spirea FACW Grasses and Forbs: Alopecurus aequalis short-awn foxtail OBL Carex obnupta slough sedge OBL Deschampsia cespitosa tufted hairgrass FACW Festuca arundinacea tall fescue FAC- • Festuca rubra red fescue FAC+ Glyceria elata tall mannagrass FACW+ Holcus lanatus common velvet-grass FAC Iris pseudacorus yellow flag iris OBL Juncus ensifolius dagger-leaf rush FACW Phragmites communis common reed FACW+ Phalaris arundinacea reed canarygrass ' FACW Ranunculus repens creeping buttercup FACW Solanum dulcamara bittersweet nightshade FAC+ Symphoricarpos albus common snowberry FACU Tolmiea menziesii pig-a-back(youth-on-age) FAC* Typha latifolia common cattail OBL As defined in Table 1 Page 7 . • • .• • g -51 g-i -4 .*::•:. .. ........ / / 9— X. .:.... 0 c,--r :.. v::.:::;:ir * •:: .:Fit /../ 1. F -.4.- [Olt) ....... ........ •...........::::::". West V. Highway ••••••••••••:'•• V C ......:.. 0 .0 ..0".> .---- .-------------"--------trftTii;Fiiiiii'filliii;17--"".............................................. ..................... '1,-- ...- Burlington Northern Santa Fe .. 4 r„...-- s r ,,......, ...... . . I . . ...". . ... .p. .. r., _. .." 0 . 1 -........... cry. 12. r \ ..:••::.90 (0 (lakeside Ave WV% t4 C 73 . . . .: .. \--— • , ei.....•••• Ot Z13 W .• dr*. rE i".44,.. -:, ........... ...••••• co 61 i t ,,, ..._............1 Z •,...... Ifi] ... i / .r4 .. 4. b 1 t. . 40% ..• • . • . . I t•S 1,•• 1 Z ....,.. . - co Springbrook Creek i 0 . . z . 4 Lind Ave S ‘il " sr v• ... • tot Volley Rd 4. A 4111. V 111Iy V . . ... . . . . Wetland E occurs just south of SW27th Street and east of the METRO utility berm. It is separated from Wetland F by an old roadway berm that supports predominantly upland vegetation(i.e.,Himalayan blackberry,Scot's broom,vine maple and madrona). Vegetation in Wetland E is dominated by black cottonwood,red alder,willow,reed canarygrass,sedges,rushes and creeping buttercup. It covers less than one-half acre and is a combination of palustrine scrub/shrub and forest vegetation types. Soils consist of 18 inches of dark grayish-brown(10YR 4/2)sandy loam with strong brown(7.5YR 4/6) mottles and a high organic matter content. Hydrology for Wetland E originates as surface runoff from SW 27h Street and adjacent fill. Saturated soil and ponded water occurs nearly year-round in portions of this wetland. Wetland F is a mixture of seasonal open water and palustrine emergent,scrub/shrub and forest vegetation types that covers approximately 20 acres immediately to the east of the proposed project. It is hydrologically connected to Wetland G through a 48"culvert under the utility berm about 200 feet south of SW 27th Street. There is no direct connection between Wetland E and F. Dominant vegetation in this wetland is cattails and reed canarygrass in the emergent wetland,willows,spiraea and small black cottonwood and red alder in the scrub/shrub areas and large cottonwood in the forested portion. Soils consist of 18 inches of dark grayish brown(10YR 4/2)sandy loam with strong brown(7.5YR 4/6) mottles and a high organic matter content. Hydrology for Wetland F is predominantly regional groundwater and surface water from Wetland G. The east boundary of Wetland F is formed by an old, unused roadway berm. Depending on the time of year and amount of precipitation an ephemeral pond(s) occurs along the eastern edge of Wetland F. Excess winter and spring runoff drains through an 18"pipe midway along this berm into an adjacent 10-acre wetland. Wetland G is located to the west of the METRO utility berm. It is a complex of palustrine emergent and scrub/shrub wetlands(Boeing South Marsh)and palustrine scrub/shrub and forested wetlands(City of Renton lands). As discussed above,it is hydrologically connected to Wetland F. The Boeing South Marsh is dominated by reed canarygrass,cattails and small patches of willows. The City of Renton portion of this wetland along the southwest edge of the project site is dominated by willows,Douglas' spiraea,cottonwood and alder in a wetland mosaic with upland forest and shrub lands. 3.2.6 Wetland Functions and Values Wetlands functions and values for five resource categories were assessed using the modified Reppert • Method. Wetlands E,F and G have been impacted by road and utility berm construction,diking,invasive species dominance and urban stormwater hydrology. Although these wetlands are considered"adjacent" to Springbrook Creek for regulatory purposes,their hydrologic functions directly related to the riverine system have been severely altered. Natural Biological Functions-Wetland E is not much more than a ditch between SW 27th Street and an old parallel roadway 40 feet to the south. Its biological function is very low. Wetlands F and G on the other hand have moderate to high value for biological function as they are quite large in size and support palustrine forest,palustrine scrub/shrub,palustrine emergent and open water wetland types. Hydrologic Support Functions-Since the diking and channelization of Springbrook Creek Wetlands F and G are flooded only intermittently and since the recent culvert improvement at SW 27th Street they will probably not be flooded in the future. These two wetlands therefore have low value for hydrologic support. Due to its location and configuration Wetland E has very low to non-existent value. The wetlands do retain some surface water runoff from adjacent roadways,but this is a minor amount compared to the entire watershed. Storm and Floodwater Storage Functions-These three wetlands have high value for storage. Nearly Page 8 z- �every spring they serve as floodwater storage sites for extreme high water conditions along Springbrook Creek. As of Jul}> 1999 the culverts at SW 27th Street that constricted Springbrook Creek flows resulting in these floodings have been upgraded such that 100-year events are not expected to flood even the lowest of these three wetlands. Groundwater Recharge Functions-All three wetlands have very low value for groundwater recharge functions. Woodinville is the predominant soils series. This series has moderately slow permeability, is poorly drained and generally has a seasonal high water table at or near the surface. These are also essentially isolated palustrine wetlands and their total area relative to the Springbrook Creek watershed is very small. Water Purification Functions-All three wetlands have a high value for water purification as they support nearly 100%vegetative cover and what little urban runoff they receive generally occurs as very slow sheet flow through this vegetation. 4. LIMITATIONS OF THIS REPORT This report has been prepared from materials created for Phase 1 of this project by Shapiro&Associates and HNTB Corp.and from additional field work and analysis performed by Parametrix,Inc. and Kato& Warren,Inc.biologists. This material has been produced specifically for assessment of wetlands impacts and mitigation design for proposed City of Renton project activities of the Phase 2 portion of Oakesdale Avenue SW improvements. Page 9 **************************************************************** City of Renton WA Receipt **************************************************************** Receipt Number: R0004081 Amount: 1, 001.98 07/25/00 09 :03 Payment Method: IOT Notation: INTERFUND TRANS Init: JEJ Project #: LUA00-091 Type: LUA Land Use Actions Location: OAKESDALE AVENUE BETWEEN SW 27TH ST AND SW 34T Total Fees: 1, 001.98 This Payment 1, 001.98 Total ALL Pmts: 1, 001.98 Balance: .00 **************************************************************** Account Code Description Amount 000 .345. 81. 00 .0016 Shoreline Subst Dev 1, 000. 00 000.05 .519 .90 .42 .1 Postage 1.98 0 • INTERFUND TRANSFER Transfer Number: Date: 7/7/0 C General Description: Department To Be Charged (Transfer Out-From) / . t Description Account Account Number WO/Function /Amountn 4Si 7.)."e 1,t r te. ..-✓t.�'YI.�(i1 'f t d d c'�ws,00 / Department Authorization: ( ./`(/A V- ' Z • Department To Be Credited (Transfer In - To) Description Accounto Number WO/Function Amount )': )/ D)07o J-tt�. oO0,cot b i ,^-.� t .c Coo. 0S, " d c� p q'u./-0, d .. .,'� • Distribution: White: Finance Department Yellow: Department to be Charged Pink: Department to be Credited