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LUA87-099
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'''''' '-'2 I : /A DS �V I T F R S.r. . — _ .. . _L ilri , i� ,=-mar•- _ I ix'111 . TM"! II IIIINI: .---r=— s _1:_: i ....„00 ,, su wet./ , .,.,,,,, ii..:1,_,:L,,,;rIVIII Y I ,I\ - - t_ :, 1 4 ti , _ ----4517 •\ r-.-7:: E;74.--,--. : -Q e • o n Q I \ r:::•! 0• r a • . 1 H '\ rc CITY OF RENTON, PUBLIC WORKS DEPT: . 47 SPECIAL PERMIT: SP-099-87 CONDITIONAL USE PERMIT: CU- 101-87 SHORELINE MANAGEMENT: SM-011-87 . APPLICANT CITY OF RENTON TOTAL AREA 1.86 ACRES PRINCIPAL ACCESS OAKESDALE AVENUE S.W. EXISTING ZONING M—P (MANUFACTURING PARK) • EXISTING USE UNDEVELOPED • ' PROPOSED USE MAJOR ARTERIAL STREET COMPREHENSIVE LAND USE PLAN MANUFACTURING PARK/MULTIPLE OPTION & GREENBELT. ' COMMENTS THE PROJECT VICINITY IS IN THE OAKESDALE AVENUE S.W. AREA BETWEEN S.W. 16th STREET .AND S.W. GRADY•WAY. ..- - • • • I • i 4"......, \ i LAN ) USE ELEPV'ENT Pq F �_ Single Family �I Commercial ,.. ._... t 1 1 ' , F ..5_ W • �� ,�.., OPP ......... fiaiB$a®F�ovia9�g \ Office / Office Park . !' , . _ • Medium ®�i��o$�9 ;:0000000, Public/Quasi -Public .00000.0 • 1 k :. ! o000000• Multi-Family 0.0.0.0. ,.....1% l l•/n °�'f High Density 0000®o a Light industrial 1 .}II' 11121141\:4'''':. .' IPItillIC tRecreation .000000Heavy �n ustrrial :°°°°= „Nell :,1 ,: f� Greenbelt I Manufacturing Park -• 1. L - �� . __Jr "0"0�04000°0:� . ,0000; ,���'t'. -,.r___,. .11■ Oo�t`�,ii� ' QN► 4 — iiiiiiiiiiiiiiii1440i111111111PIALltrigiO: ` °° t� :i:: � •1C � , °ti j •�� °°!+,o� �. �nit�YQ►\'Q � .ri ...�f. :I r .--• : ° :.LLt�,f' t�ppj{.!�\ �,, gGGq ° o ,°°•�I .111 }10.'� M'j� ���ii•:o :IL • 6 � 6• 0°00 0°0000°o ,` # ■IUy'•' ri_l `+ yo000000. 9 O°Oo0°O°°°°o00°°°°� °Oo''. 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PROPONENT: Public Works Department LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24, T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of , Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. LEAD AGENCY: City of Renton, Building and Zoning Department. The City of Renton Environmental Review Committee has determined that it I. does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43 .21C.030 (2) (c) . This decision was made after review of an expanded environmental checklist and preliminary site plan, on file with the lead agency. Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4- 2822 (D) Renton Municipal Code (see attached sheet) . These conditions are necessary to mitigate environmental impacts identified during the environmental review process. This DNS is issued under WAC 197-11-340. The lead agency will not act on this proposal for fifteen (15) days from November 23, 1987. Any interested party may submit written comments which must be submitted by 5: 00 p.m. , December 8, 1987, in order to be considered. A fourteen (14) day appeal period will commence following the finalization of the DNS. Responsible Official: Environmental Review Committee City of Renton 200 Mill Avenue South, Renton, WA 98055 Phone: 235-2500 • DATE OF DECISION: November 18, 1987 EFFECTIVE DATE: November 23, 1987 / R id G. Nelson Sri . spring Building and Zoning Director Policy it elopee t Director Richard Houghton Public rks Director DETERMINATION OF NON-SIGNIFICANCE MITIGATION MEASURES PROJECT:. Oakesdale Ave. S.W. (between S.W. Grady and S.W. 16th Street) including street undercrossing under I-405. ENVIRONMENTAL CHECKLIST NO. : ECF-083-87 APPLICATION NO(S) . : SP-099-87, CU-101-87, SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24, , T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. CONDITIONS: 1. That erosion control measures be taken and adhered to . during construction including siltation fences, runoff retention and siltation ponds; 2. . That the applicant coordinate with the Department of Fisheries on scheduling so as to minimize impacts to downstream water quality during critical fisheries periods; 3. That street landscaping be n approved by the city landscape architect as to size, species, spacing, etc. as well as to compatibility with other landscaping in the area; 4. That surface water runoff be treated with both oil/water separators as well as grass lined biofiltering swales before being allowed to drain into the { P-1 Channel. 1 REVIEWING DEPARTMENT/DIVISION : C iUI (UO •U) UiS1OI ' EIAPPROVED IXAPPROVED WITH CONDITIONS [] NOT APPROVED (10 NUL- k 11-1.6 r)Oi Pi yi Nzcc --To c. � �h �v1�a i 5 I ►^2u it ET) PaSN&tti- I ?:R O}cad ( \J KOt ., �'�[� r`JP 5tioL-' do f �6l� s lU 71"ti U 'J��Ci�� ..D (->6 �sv� �iTlt f� U,c?_)roc•7 SI y� , 10 1-41, f(X'1 ?F 1 H -nit; p{zpipjva\)/ S6 G+J ( I6- k3pHt;t-'I A C \PT Y)INIaT ZIr,,t,� 1 r xrl Dr aI I NE1 JeA) DATE : //- SIGNATURE OF DPECTOR OR AUTHORIZED REPRESENTATIVE REVIEW NG DEPARTMENT/DIVISION : TXkj 10 APPROVED [1] APPROVED WITH CONDITIONS ® NOT APPROVED • l;f r lJ �~ r rr 2 4�� ~. ._ DATE: , Id FJ 1ifre4`i SIG TURE OF DIRECA ' OR AUTHORIZED REPRESENTATIVE 0 REVIEWING DEPARTMENT/DIVI'SION : 1 ?4f-1 RAPPROVED if] APPROVED WITH CONDITIONS ® NOT APPROVED • 7 // _ - 37 C. f� DATE: /J/ 2� ? SIGNATURE P'OR OR �AUTHOR:ZED REPRESENTATIVE REVIEWING DEPARTMENT/DIVISION: I:: APPROVED 'APPROVED WITH CONDITIONS aecji1NOT APPROVED e.G.t-ricti 'h4.44,g • DATE: /®-3d--°--) SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE REVIEWING DEPARTMENT/DIVISION : rOAC D o nWAP IDAPPROVED OAPPROVED WITH CONDITIONS [] NOT APPROVED DATE: SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE COMMENTS: NC) \AAIAA'e--trA Ar "c7,:kl'EL We have review• • this application with particular attention to those areas we have experti= n and have identified areas of probable impact or areas where addi '•; ` �� is needed to properly assess this proposal. If Siena re'o' DirP or orized Representative Date \ / REVIEWIN EPARTMENT/DIVISION ; FIRE PR.-'ENTto►.i APPROVED JAPPR.OVED° WITH CONDITIONS flNOT APPROVED )0144; DATE: ev? SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE ---�— REVIEWING DEPARTMENT/DIVISION : Av'�-� D APPROVED APPROVED WITH CONDITIONS El NOT APPROVED ee Co 04 Wde4 n- C,A8e-g X174- ,Y DATE: 114a6'4r,6e� 31 ( J? SIGNA •i'' OF DIRECTOR OR AUTHORIZED REPRESENTATIVE CO*IENTS, The applicant has addressed a major park concern by accommodating non-motorized traffic on the Springbrook under-crossing. Since S.W. 16th Street will be designated as a trail route in the Trails Master Plan it will be important that the Oakesciale Avenue S.W. /S.W. 16th Street intersection be designed to accommodate both pedestrian and bicycle traffic. Further access for the Springbrook Trail from S.W. 16th Street will need to work from both east and west directions for both pedestrians and bikes. These considerations are especially important since the Oakes- dale under-crossing has not been designed to accommodate non-motorized transportation. • We have 'reviewed this application with particular attention to those areas we have expertise in and have identified areas of probable impact or areas where additional 'nfo ion is needed to properly assess this proposal. e p Ostectux or t -i.zed Representative Date 1 . I r H t"y i 1111000:101 i i ) ' ',..\ 24 0 LAKE I� _,� ASD�11UG8'Oiil I , k • n 'RiIL'�s ,' ri iff ra f p� l n 1 tI.i i 16 i '0�''®i City Of Renton ,,, k Sys ,�;, r -k•••Mx.,„.q., L' i0 .+x Vmy� d e2. ' 1 0,� G,�d1�1 tea., . ........_.. �� /11 ,f111111111104 --1 ---.1P4411P—W • •1 rw S.W. 184h S4. 1 J :�7 `ii ttipfr) ,., ._ \ il 1 I oG i -h, ?: ' ,Nr-/7 \ I R1-$.1E0'/ 11111150LN, N. 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', '••••:::,11i;' .,)It." „3..\,....,...,,..\.,..•, ; ;'": ...- .•::::- ''....". ••;'1...' - -ir • • •••••••••••••••: 7:.............. rf2i4•1•2g4VW't(' ...." .:.. 'Al I i:..1),':.!\,\ •:•2. '•.• ' ,....- . i 9r\i • •..„.. : .L,,.../ t,„.,, . ..J'.i.?: c•:.....,...5:..,l; I.)i rci.1.,.‘,‘•.',,.,...,.......!;:-...'i ,:. ':. ,•,' I• ••.:g'•;;).j.:...:../ ....,1 ‘., •••••k.V -.ill' •• ' • -••••.--' :?:.--,•p. 0•• ,.:-"• • •:." •-•• •• '":' •''';''' ••'•••'''''.•' • •. ' • ' 1 ...1'.'.,'''sA 1..'' .. ',,.'' • .i NOTES::.' • - . : :.i •:•• ..''V.:'.•••••;• :-•: . '. ...:'4 ''. THE IDENTIFIED FLOOD HAZARD AREAS:WITHIN,THERESTUDY.:LIMITS - • :Vv..' S.: REFLECT BACKWATER FLOODING FROM THE GREE.N RIVER, TO SPRINGBROOK i • , CREEK MILL CREEK (KENT).; AND MILL CREEK (ilkUBURN), AS APPLICABLE -.. . AbDITIONAL,,FLOODPRONE AREAS FROM OTHER L,LOCADRAINAGES ARE • NOTSHOWN. (REFER TO THE EXISTING KING COUNTY FLOOD INSURANCE STUDY FOR IDENTIFICATION OF ADDITIONAL FLOOD Fl.,;‘,\ ARD AREAS.);:. W . - ! , 1 .• ? ...1..• • . :,..., y .. . . . : ....2 THE GREEN RIVER.FLOOD HAZARD AREkDBILINEA,T...10IVS.AND.ELEVATIONS • .7-:.' OUTSIDE .OFt:THFIVIAIN.:CHANNErREPRESENT II,A.1:s(STSTONDITIONS WITH LEVEE •,, : . .".. . , SYSTEMS ASSUMED REMOVED WHERE..FREEBOARD.IS.!LESS•THAN:.2...9.,..,:FEET. • (REFERENCE LEVEE SYMBOL PER'LEGEND`iF9tRitp.rE,E sysTsqi,.....6ES)9p)ATIONS). ,. -. . ..: . •e pi 1; i it J h;..,• ' ;.•• • ..,./..,•• :‘3. . •FLOODWAY DELINEATIONS REPRESENT Mr,1\1_110:0!,1.Wk.C,HA., NNEL WATER SURFACE ___... ELEVATION:TOP:WIDTHS: REGULATORY FI.O ,DV1.1, Y'fOR ,LEyE.p. SECTIONS . .--•-",, EXTENDS TO THE PROTECTED TOE OF THEI25,..,...EE\ TEM."..•eli.!: . . ., • • • [ , . . .. •'.....,',',1,'0,41,,,.s 11.:,,. ..,, ... ......:.!!!:II : , • . s• qt. :,.: : ..1‘ ...-. • , ,,:.:....v,‘ . I -",.. -"•-•.:.Ai ,- ,...i i . . :,.. A.,.... k,„- -• . . • . . . ., , • .• .., • WORK MAP FOR . SHEET 21 of 33 • NO. All( FLOOD INSURANCE RATE MAP & CONTRACT NO. 3UILDING. FLOOD BOUNDARY AND FLOODWAY MAP-- EMW-85-C-1893 • COMMUNITY: ._ SOURCE OF FLOODING: . . • . • KING COUNTY, WA GREEN RIVER, I- SPRINGBROOK CREEK , ,.....6.0.F RENTON) BLACK RIVER Go . C- TO-C OF /SE4R/NG STANDARD /DREC.i3T, • PRESTRESSED CONC. SLAG n///C./. A conic-- • ea' iOECI<' SLA/3 AN, APPROACH LAIC OVERLAY MATCH EXIST P ACH S/OE) CAST-I N-PLACE '- 6? "CLE4,P _ - i FILL TILE w� P/L E C4P W W I, II WOOD LAGGING ST,eUCTU,PAL - , C./. C.P CON , 73E7-7/VEEN SOLD/ER Pi I PILES COiYCRET-E /DR/l/ -N STEEL SOLD/F� I FASCIA L L ? R I` `r P//FS @ 2 5'CENTERS-�1. Ill I _ R UND/�3 TUR8E0 Ill SEE DETAIL(�/� ( , N E4RTH III I I 11 SOLD/ER PILE - e a c% '1 lb - <STEEL F/LE) �I( I_.- �___ WALL FOOTING 11/OODE_Al LAGGING • ICS +1111 44/ (III ti»�,�___` - , ice i `' ' C,I,P CONC. FASC/A Gt/.4 .. = UNDERD,24/N NOa I SYSTEM =. SEE DETAIL Alffik r ! STRUC7C/24L TEE I'VEWED TO . SOLI)/ER PILE FO,c./'Va ) LAGGING AND W/ . ,548C/A PVALL 'TETA S L (--/-- - TYPICAL ULTIMATE 3EC770NI /!ITS OAKESP4L.E OVERCR0SS/NG NTS • 24•6v 4 2) PS Fl, T oP• WALL 1---Li r I- 405 ROADWAY • 1:-. _.:-.-.----,,,, ....- , L__ 4. _ _ _ _ _ ___ _ __A r. .:,..::.:::::.J i 0,___€(1/1,_.iii,z_____1(i( s a _ 0AKESDr9L E AVE 1; (LOOK/N6 5ouT,10 ` . all 3 . 3 P-/ CHANNEL 9 - • EXCAvA-TION 9 (F"UTURE) • f' — 0Qi AC7-/vE PF�'ESSURE�i�"T SOLD/ER r A OF F'/L.E D/AME 7 E/r • P/L ES a o w�- aril-ltrl-rc/r TES: • IzO /��JF/FT_, Water pressure is not included in either active or passive pressure. '. 2) Active pressure .. 39 psf/ft. of depth above g.w.t. 20 f'5F/F7 1 20 psf/ft. below g.w.t. - b. -- 3) Passive pressure .. 120 psf/ft. below g.w.t 4) Active pressure acts over one pile diameter. 5) Passive pressure acts over two pile diameters. „. 6) Actual active & passive net pressures below the t excavation lines are dependent upon pile sizes, spacing _ and pressures shown must be adjusted accordingly.. _ 7) The pressure diagrams shown are only to be used in preliminary sizing and layouts. The final designs will PA SS/1/E PRESSU/.EFT OF- be based on load deflection analysis of laterally loaded P/LE • O/AII//ETE� piles taking into account, soil structure intersections. FIGURE: UJUERCROSSING EARTH PRESSURE FOR PRELIMINARY DESIGI • fRG vi---1.- GG ' C-TO-C OF /SEAR/NG APPROACH SC/1/5 � - LMC —ciP CONC. DECK . . . ' SLAI3 OVERLAY 1 . I NEOPRENE \ L--- - . ,S ,4 /NG PAD ST4A/DARD PRECAST, r--------p PRESTRESSED II II CONCRETE SLAB 1 II I i1 I 1, II 1 it o . I WEWEL2 STUD TO I i� . .•0, STRUCTURAL TEE 1 1 I. •o : • 1 TEPt�R4 T/MISER PIPE I /LE 1 I� R 0 •0 LAGG/M /VGY� ASSUME GI-0 / 4CE- TO- I A .; PAC O WALL .•.• I 1 � • . 58 CURB LINE TO alef3 I , L:/NE 1 I 1 I V :. o -C/P TRAFFIC 13,4RR/ER I ° - TOP' OF RDWV IY I i ' o '.o ..:' CAST IN PLACE CONCRETE FASCIA WALL- . I .(PERMA/VE/V T STRUCTURAL • - • /.... 4LL) I STRUCTURAL TEE 'We-WED TO PIPE PILE • 0FTA I L - 1 ,----, . . _-_ 1 • •.Ni .yam.'• nG: ENE X ` • 4� ..>. 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'" l.'•.. ..''.;;•'1 ' .A'' . ......" . . .,,, .4, ...:'.........:.:-; ....... • ,'....(.. ,/,..:!:::t.....ci.i.‘-.y...,,a.iA?..'-k.':.y..'s,.,...,:..li....:,:. .5.'fj.i'..:.4,;.i..r.:'..iil'..0e)N8.-)( `1.!'i. .4 '.:. ! I\ •:••• .s .•, • • t......_ iZQ3 `. 2 ,F:, +: t�. .rf ,.,:. `.::Li(:�}.�:_Ot�_L�.(_�l�'��L�./1'✓.. ' , ' :t.1 � p .�£,t, N g} ... DOTES: 4. I • ,,;\ =;�`,. ' THE IDENTIFIED FLOOD HAZARD AREAS;WITHIN:'TH• E'RESTUp'' LIMITS `� : `` :€ REELECT BACKWATER FLOODING•FROM THE GREEN RIVER TO SPRINGBROOK :; CREEK;•:.MILL CREEK (KENT), AND MILL CREEK (1 UBURN), AS APPLICABLE. ::.:,. ADDITIONAL'; M:FLOQD'PRONE AREAS FRO OTHER;,LOCAL.DRAINAGES ARE • �'( NOT:SHOWN. (REFER TO THE EXISTING KING COUNTY FLOOD INSURANCE STUDY :. FOR IDENTIFICATION OF ADDITIONAL FLOOD H• AZARD AREAS)'. . 2, .THE GREEN.RIVER.FLOOD HAZARD AREA`,DELINEATLOAISAAND,ELEVATIONS ;• •. •' OUTSIDE'pel...H:E"ji A1N.:CHA.NNEL-.REPRES.EN:T ANA'LYS S C'OP DITIONS WITH LEVEE : • SYSTEMS ASSUMED REMOVED WHERE..FREEBOARD ISiLESS.T171AN;.2_0.FEET. • (REFERENCE LEVEE SYMBOL PER'LEGEND=F.t ;R[EVEE SYSTEM bES( NATIONS).' 3.. •FLOODWAY DELINEATIONS REPRESENT MI:J MUI OHA"NNELWATER SURFACE . .ELEVA.TION TOPWIDTHS REGULATORY FtO :"DWA;Y OR ,LEVEED SECTIONS -- £ EXTENDS TO THE PROTECTED TOE OF THE::<L:EE:= E:E;SY$TEM:' =i=. • VIC • -..'"',.'%:•' , ,k••.'•: .• .. •••• 16:w is 't; MI . 4.„::..;.;.;...,.• :: .....;•.•,.:.:,..,.„.... ••11TG 1 r rra'�k . ric) N , '��! IT Y r R6 .... ... .........--:. .. .. -.7-':- 1 1. i.. • . . .''.IR.,1..\ 1 G •.•... 1 .... 9 ... i N . �U J :v: 79 ' . , , .. SHEET '...,2J" WORK MAP FOR NO. 21 of 33 Li Alit 181 • • • • FLOOD INSURANCE RATE MAP & CONTRACT NO. UILDING/ZONING DEPT. FLOOD BOUNDARY AND FLOODWAY MAP EMW-85-C-1893 • ' COMMUNITY: SOURCE OF FLOODING: KING COUNTY, WA GREEN RIVER , Iri-ry (IF RFNTCIN► . BLACK RIVER. SPRINGBROOK CREEK BEGINNING OF FILE FILE TITLE se, 0 qq..p a / > BEGINNING OF FILE FILE TITLE SP'•-- e -4.-• 0 ” VlayAlq1A1 MeA,k. yaw,' % yw"= CITY ‘_,F RENTON 20 sr& . Hearing Examiner Earl Clymer, Mayor Fred J. Kaufman CITY OF RENTON September 15, 1992 SEP 7 4 1992 HICEIVbU. Sam Chastain: CITY CLERKS OFFICE Community Services Administrator Re: CU;SP-099-87 Dear Sam: This office has been reviewing some decisions recently and found that the Pedestrian Pathway that was to parallel the Oakesdale Tunnel under I-405 has yet to be improved. When this office reviewed the Special Permit for Fill and Grade and the Shoreline Master Permit this office specifically inquired about the lack of pedestrian access to the underpass. This office was assured by the Public Works Department that a pedestrian passage was to be accommodated in the immediately adjacent culvert system under I-405 as part of the trail system. A shoreline permit was granted since public access to the adjacent shoreline was assured as part of a project. This office would not have approved the permits without the assurance that the passage would be provided since I-405 presents a barrier to the proposed trail system that Oakesdale could have provided. The testimony at the hearing indicated that the pedestrian passage was to be provided in a reasonable time frame. Since the permit was issued more than four and a half years ago, this office is concerned that no pathway has been constructed for pedestrians. - I hope that this letter will serve to "jog" someone's memory so that jogging, walking, and cycling can be reasonably accommodated according to the assurances once given. If this office can provide any assistance, please feel free to contact me. Sincerely, FRED J. AUFMAN Hearing Examiner FJK:wmb cc: Mayor Clymer Jay Covington Lynn Guttmann Don Erickson .. C` -L n °QMS< - (onil '1S-)S9't 0c `1 ' 31 cc o.11b_ i,4 ANDREA BEATTY RINIKER 'I�. :'"r' /7 I l Director • STATE OF WASHINGTON . DEPARTMENT OF ECOLOGY Mail Stop PV-11 • Olympia, Washington 98504-8711 • (206) 459-6000 r f March 10, 1988 City of Renton Ronald Nelson, Director 1^ i;:, • • Building and Zoning Department `'... << 200 Mill Avenue South f r) zit t Renton, Washington 98055 , City of Renton 7 Department of Public Works "-- c✓.. c/o John Adamson 200 Mill Avenue South Renton, Washington 98055 Dear Mr. Nelson and Mr. Adamson: Re: City of Renton Permit #011-87 Renton Public Wroks Department - Applicant Shoreline Conditional Use Permit #590-14-7505 The Department of Ecology has reviewed the above referenced conditional use permit to remove and grade 5, 000 cubic yards of material to construct 790 lineal feet of Oakesdale Avenue S.W. as a major five-lane arterial road and tunnel under Interstate 405. We concur that the proposal meets the intent of the master program and the criteria set forth in WAC 173-14-140 for granting a conditional use. The permit is hereby approved subject to the following conditions: The applicant shall install an underwater storage tank to hold and then slowly release water into the environment. Such tank design shall be reviewed and approved by the Departments of Ecology,, and Fisheries and shall be operational before the proposed Oakesdale arterial is opened to the public. This approval is given pursuant to requirements of the Shoreline Management Act of 1971. Other federal, state or local approvals may be required. Construction is not authorized until thirty days from the transmittal date of this approval letter and enclosed permit or until conclusion of any review proceeding initiated within the thirty-day period. • 06 3 Mr. Nelson and Mr. Adamson March 10, 1988 Page Two If you have any questions on the above action, please contact me at (206) 459-6764 or Terra Prodan at (206) 459-6789 of this program. S' iikie4SL • • Thomas Mark Shorelands and Coastal Zone Management Program • 1Zece•ived —15L75 :. • • • U r)Nur.:4R [COI nny CITY OF RENTON, waRati� 91!afic : c•i�'.;�hl� � • �'�Y ` � ' + • SHORELINE MANAGEMENT ACT OF 1971 PERMIT FOR SHORELINE AANAFi MENT 11.4NTO SUBSTANTIAL DEVELOPMENT, CONDITIfNALFU r JR N1`i 11ANCE APPLICATION NO. : SM-0 11-87• DATE RECEIVED: October 26, 1987 DATE OF PUBLICATION: October 25, 1987 and November 2, 1987 DATE APPROVED: February 5, 1988 DATE DENIED: N/A TYPE OF ACTION(S) : I_XI Substantial Development Permit I_XI Conditional Use Permit in Variance Permit Pursuant to Chapter 90.58 RCW, the City of Renton has granted/denied a permit: This action was taken on the following application: • APPLICANT: City of Renton Department of Public Works %John Adamson 200 Mill Avenue S Renton, Wa. 98055 DEVELOPMENT DESCRIPTION: Application for a special permit to allow removal and grading of 5,000 cubic yards of material to construct 790 lineal feet of Oakesdale Avenue S W. as a major five-lane arterial road and a tunnel undercrossing of I-405 and application for Conditional Use Permit to allow the subject roadway to be located in the vicinity of the P-1 channel and in an area designated as "greenbelt" on the City's Comprehensive Plan. A shoreline permit is also pending with the subject application. The property is located in the vicinity of the Oakesdale Avenue S.W. area between S.W. 16th Street and S.W. Grady Way and directly east of the proposed P-1 channel. File Nos. : ECF-083-87, SP-099- 87, CU-101-87, SM-011-87. LEGAL DESCRIPTION: SEE ATTACHED APPLICATION , • SEC-TWNP-R: 24-23-4 WITHIN SHORELINES OF: Springbrook Creek STATE SHORELINE OF.. SIGNIFICANCE (YES/NO) : No ENVIRONMENT DESIGNATION:. This area of Springbrook Creek is not yet designated in the City's • Shoreline Program. The assumption • is that the environmental designation would be "Urban". APPLICABLE MASTER PROGRAM: City of Renton, December 5, 1983 The following section/page of the Master Program is applicable to the development: Section 5.04 Urban Environment (p.22) Section 7.15 Roads and Railroads (p.36) Section 8.03 Conditional Use (p.42) • Development of this project shall be undertaken pursuant to the following terms and conditions: That this application is subject to the Environmental Reivew conditions of the attached Determination of Non-Significance - Mitigated for files ECF-083-87, Sp-099-87, CU-101-87 and SM-011- 87 issued on November 23, 1987 and subject to the Condition of the Hearing Examiner. These documents are attached. This permit is granted pursuant to the Shoreline Management Act 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 Building and Zoning Department or until any review proceedings initiated within this thirty (30) day review period have been completed. i2 2 - ,Biiildin & Zoning Director Date icy Ve lopmen D rector Date THIS SECTION FOR DEPARTMENT USE ONLY IN REGARD TO A CONDITIONAL USE OR VARIANCE PERMIT DATE RECEIVED: v2 /9/ c APPROVED:u0/ `•:- DENIED: • This Conditional Use/Variance permit is approved/denied by the Department • pursuant to Chapter 90.58 RCW. Development shall be undertaken pursuant to the following additional terms and conditions: • /11• D�te Signa re of Authorized 0/g% Separtment ficial • cc: D.O.E. , NW. District Office City of Renton ..• Attorney General's Office Building and Zoning Department Public Works Department, Eng. Dept. Applicant p5-013 CITY OF RENTON nLL LAND USE HEARING EXAMINER Earl Clymer, Mayor Fred J. Kaufman January 29, 1988 John Adamson Developmental Program Coordinator City of Renton, Public Works Department 200 Mill Avenue South Renton, Washington 98055 RE: Public Works Department File No. CU-101-87 & SP-099-87 Dear Mr. Adamson: The Examiner's Report regarding the referenced application which was published January 14, 1988 has not been appealed within the 14-day period established by ordinance. Therefore, this matter is considered final and is being transmitted to the City Clerk this date for filing. Please feel free to contact this office if further assistance or information is required. Sincerely, • p FRED J. KAUFMAN HEARING EXAMINER FJK:dk cc: City Clerk Building & Zoning Department 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2593 AFFIDAVIT OF SERVICE BY MAILING STATE OF WASHINGTON ) )ss. County of King ) DOTTY KLINGMAN , being first duly sworn, upon oath, deposes and states: That on the 14th day of January , t988 affiant deposited in the mails of the United States a sealed envelope containing a decision or recommendation with postage prepaid, addressed to the parties of record in the below entitled application or petition. SUBSCRIBED AND SWORN to before me this / i/74,/ day of JIJv, -i , 1988 kitc_a0 L %J 0 A-e'_eocila2- Notary`-Public in and fair the State of Washington, residing at QE EO , therein. Application, Petition, or Case II: SP-009-87 & CU-101-87 - CITY OF RENTON PUBLIC WORKS DEPARTMENT (The minutes contain a list of the parties of record.) !.. January 14, 1988 OFFICE OF THE HEARING EXAMINER CITY OF RENTON REPORT AND DECISION APPLICANT: CITY OF RENTON PUBLIC WORKS DEPARTMENT File No.: SP-099-87 and CU-101-87 LOCATION: Property is located from S.W. Grady Way to S.W. 16th Street. SUMMARY OF REQUEST: Special Permit to grade and fill to remove 5000 cubic yards of material to allow construction of a roadway tunnel under I-405, and a Conditional Use Permit to locate the roadway in the vicinity of the shoreline adjacent to Springbrook Creek. SUMMARY OF ACTION: Building and Zoning Department Recommendation: Approval with conditions. BUILDING & ZONING The Building & Zoning Department Report was DEPARTMENT REPORT: received by the Examiner on December 29, 1987 PUBLIC HEARING: After reviewing the Building and Zoning Department Report, examining available information on file with the application, and field checking the property and surrounding area, the Examiner conducted a public hearing on the subject as follows: MINUTES The hearing was opened on January 5, 1988 at 9:00 A.M. in the Council Chambers of the Renton Municipal Building. Parties wishing to testify were affirmed by the Examiner. The following exhibits were entered into the record: Exhibit #1 - Yellow File containing application, proof of posting and publication and other documentation pertinent to this request. Exhibit #2 - Aerial Map Exhibit #3 - Topographical Map The hearing opened with a presentation of the staff report by the Zoning Administrator, Don Erickson. The City is planning to construct a five-lane roadway tunnel under I-405 at Grady Way and S.W. 16th Street which will be approximately 790 ft. long and 15 ft. deep; 5000 cubic yards of material will be moved; limited access exists on Lind Avenue with other access on East and West Valley Roads; a link will continue down to SW 43rd which contains some wetland areas requiring some negotiations with agencies involved to be sure mitigation measures are taken. A review was given of surrounding zoning pointing out Springbrook Creek which will be realigned to parallel the proposed tunnel; the tunnel will be below grade and will require sump pumping to transfer the drainage up to the surface on its way to Springbrook Creek; oil/water separators and pumps will be used, and it is possible there will be grass-lined swales used in place of the separators. Erickson stated the Department of Fisheries and the City have agreed if the City would commit to the clean-up of Springbrook Creek in the south end of the valley, Fisheries would take less interest in the project Reviewing the criteria for the proposal, the Parks and Recreation concerns regarding the extension of the trail system for the City was discussed as pertains to pedestrian circulation; there will be minor impacts on the surrounding areas; ERC requirements were reviewed requiring erosion control measures to be taken, coordination with the Department of Fisheries to minimize impacts to downstream water quality, street landscaping, and surface water run-off treatment. Construction activity and siltation measures must be addressed as to their impacts on the Springbrook Creek. CITY OF RENTON PUBLIC DEPARTMENT SP-099-87 and CU-101-87 January 14, 1988 Page 2 John Adamson, Program Development Coordinator for the City of Renton was requested to address the alignment of the P-1 Channel as pertains to this proposal. Mr. Adamson approached Exhibit #2 and pointed out as of this date the box culvert under the bridge has been completed, the Channel has been realigned for approximately 50 ft. to the south of Grady Way where it turns southwesterly back to the original Channel underneath I-405 where it continues southeasterly and south. The critical concern of the Department of Fisheries exists regarding the realigned portion of the Channel, the construction area to the east and the intersection of SW 16th Street. Continuing Mr. Erickson said there will be approximately 278 truck trips; the site will be hydroseeded for erosion control; it is felt the noise from this project will be no greater than that currently produced by I-405 traffic; the roads are to be kept clean during construction; and stated there are no archaeological concerns to be addressed. In reviewing the Conditional Use Permit it was noted that the Shoreline Master Program requires that primary arterials be located away from shorelines except in industrial areas to provide shoreline roads that are available to slow-moving recreational traffic. The membrane lining for the entire creek in the area where elevation drops below the water table, needed to keep water from percolating onto Oaksdale, was discussed; Erickson feels a justification has been shown for a major arterial next to an existing waterway; and reviewed the criteria to be considered for a Conditional Use request and recommending approval subject to the conditions set out in the staff report. Testifying again for the City was John Adamson. Clarifying questions on the provision of sidewalks along roadways, it was pointed out because of the arterial nature of the road, the fact this is a tunnel which produces poor sight distance and is adjacent to a City trail, it would be dangerous to provide pedestrian access next to this proposed high-speed roadway. Continuing, Adamson stated he concurs with the staff report and urged approval by the Examiner. In reviewing the proposal briefly Adamson stated the tunnel is 790 ft. long, rising at each end; there are on-going discussions with the Department of Fisheries regarding their ultimate concern of overall water quality in Springbrook Creek and the 120 ft. section affected by this proposal; at least 2/3 of the water pumped out of the tunnel will be ground water with a small portion of that water being roadway water which is the concern of the Fisheries Department. They have expressed concern over the possible use of oil/water separators. Referring to the trail system he said it will be usable by pedestrians, and will be on the west side of Springbrook Creek. The trail itself is not a part of this application but will be designated and signed; due to topographical constraints, acquisition costs and construction constraints the right-of-way has been restricted to roadway width only making it almost impossible to landscape. The acquisition of right-of-way is not restricted to only the vicinity of the tunnel but the entire length of the roadway meaning the City has not acquired enough property to landscape. Landscaping and/or lack thereof was discussed by Erickson, Adamson and the Examiner with Adamson pointing out the areas involved on the aerial map provided as an exhibit. Tunnel clearance is 15'2" which has been approved by the State Highway Department; reporting of a siltation control plan during construction was recommended to be reported to the ERC; because this is a major arterial and the restricted sight distances, particular care is being taken to ensure the road is well-lighted and well signed to warn of the dip and approaching stop sign at 16th Street with provision for signalization at Grady Way and Oakesdale when warranted. Mr. Adamson continued stating even though this proposal is an industrial arterial it does intrude into the B-1 zoning of Longacres Race Track; most of the roadway contaminants will be diluted by the ground water with measures prepared to handle spills at this location; the City will take whatever steps necessary to ensure the creek is protected during and after construction and, Adamson requested approval of this proposal by the Hearing Examiner. The Examiner called for further testimony regarding this project. There was no one else wishing to speak, and no further comments from staff. The hearing closed at 10:25 A.M. FINDINGS, CONCLUSIONS & DECISION: Having reviewed the record in this matter, the Examiner now makes and enters the following: FINDINGS: 1. The applicant, the City of Renton, Public Works Department, filed a request for approval of a Special Permit to excavate approximately 5,000 cubic yards of material to allow construction of the Oakesdale Avenue S.W. right-of-way and for a Conditional Use Permit under the Shoreline Master Program to allow construction within 200 feet of a designated shoreline. 2. The yellow file containing the staff report, the State Environmental Policy Act (SEPA) documentation and other pertinent materials was entered into the record as Exhibit #1. CITY OF RENTON PUBLIC WC._—S DEPARTMENT SP-099-87 and CU-101-87 January 14, 1988 Page 3 3. The Environmental Review Committee (ERC), the City's responsible official issued a Declaration of Non-Significance (DNS) for the subject proposal. 4. The subject proposal was reviewed by all departments with an interest in the matter. 5. The subject site is located in the vicinity of the southerly extension of Oakesdale Avenue S.W. between S.W. Grady Way on the north, S.W. 16th Street on the south and just east of the proposed P-1 Channel. 6. The subject site was annexed into the City by adoption of Ordinance 1745, enacted by the City Council in April, 1959, as amended by Ordinances 1764 and 1928, enacted in May, 1959 and December 1961, respectively. 7. The subject site is zoned M-P (Manufacturing Park) a classification it received in December, 1986 with the adoption by the City Council of Ordinance 4036. 8. The map element of the Comprehensive Plan designates the area in which the subject site is located as suitable for the development of Greenbelt and Manufacturing Park uses, but does not mandate such development without consideration of other policies of the Plan. 9. A variety of Zoning Districts surround the subject site. Northeast and east of the site is a larger M-P district, the district containing the subject site. North of the site is an O-P (Office Park) district. Northwest of the site is the P-1 (Public/QuasiPublic) district containing the Metro Sewer Treatment Plant. West and southwest of the site is the B-1 (Business/Commercial) district containing Longacres Race Track. Southeast of the site is another O-P district. 10. The applicant proposes excavating a linear alignment to prepare for the construction of the Oakesdale right-of-way. The immediate proposal is to prepare that section of Oakesdale which runs between Grady on the north and S.W. 16th on the south. The proposed alignment will pass under I-405. To permit passage under I-405, with adequate clearance, excavation will be necessary to drop the roadway below the current surface elevation. To accomplish this objective approximately 5,000 cubic yards of material must be removed from the site. 11. The site is approximately 1.86 acres in area. The length of the proposal would be approximately 790 linear feet. Of that length approximately 120 feet would actually be a constructed box tunnel underneath I-405. The clearance created by the excavation will be approximately 15'2" which is adequate, although it deviates from the standard clearance generally required for such roadways by one foot, four inches - the normal clearance being 16'6". 12. The water table in this area is quite high and after excavation the bed of the roadway will be below the water table. While the roadway will be designed like a bathtub to minimize infiltration of water into the cut, infiltration of ground water into the area of the excavation, even for the finished road, is expected to occur. The record indicates that even during relatively dry seasons, including this last dry summer, the elevation of the water table exceeds the elevation of the road bed. Under the circumstances, constant pumping by a sump pump will be required. 13. The proposed 'bathtub' configuration for the roadway as it passes beneath I-405, will accumulate debris, oil and other contaminants from vehicles. Both the Department of Ecology and the Department of Fisheries is concerned about the ultimate handling of these contaminants. It appears as if these contaminants will be mixed with ground water which infiltrates the site and then be pumped back into the surrounding waters, particularly the P-1 Channel or Springbrook Creek. 14. The usual oil-water separators do not appear adequate because of the potential volumes of contaminated water which will be pumped from the site. Similarly, the use of grass lined swales, the preferred method, may also be of little benefit since the volume of water might cause the water to flow through the swales at too great a velocity to receive effective treatment. An additional method of handling water from the roadway, and one which could be necessary during particularly wet times, would be to include an underground storage tank to hold and then slowly release water into the environment. 15. The number of truck trips anticipated to move the excavated material would be approximately 278 over the life of the project. The project is anticipated to run from late winter or early spring until the end of October. The applicant has agreed to hydroseed the site by November 1 to avoid possible erosion which could occur during the next wet season. CITY OF RENTON PUBLIC DEPARTMENT SP-099-87 and CU-101-87 January 14, 1988 Page 4 16. The City, to minimize costs, has determined to use as little right-of-way as possible. This will limit the chances for landscaping along this section of roadway, none obviously in the tunnel, and little, if any, in the trench leading to the tunnel. Exhibit #2 demonstrates landscaped areas near both the northern and southern extent of this proposed segment, and this landscaping shall be required to match that created on adjoining segments of Oakesdale. This segment will not continue the boulevard streetscape created north of the site, nor will it be tree lined as it is south of the site - but at a minimum it should blend with those two segments by mirroring the landscaping of the adjacent segments. 17. The applicant proposes the removal of existing landscaping along the route on private property to supplement an adjoining property owner's loss of parking space along the east side of the proposal. The roadway will actually be a utilitarian road with minimal aesthetic elements. There will be no sidewalks since, the corridor is the minimum necessary to allow for travel lanes. 18. Passage under I-405 for pedestrians will be provided to the west along the trail system which will parallel the P-1 Channel. Landscaping of the P-1 corridor will provide an opportunity to soften the impact of Oakesdale in this location. CONCLUSIONS Site Plan 1. The subject proposal appears to serve the public use and interest, although the minimal landscaping will break the continuity of landscaping both north and south of this segment of Oakesdale. Those adjoining segments create a well landscaped, tree lined boulevard. • 2. The need for an additional north-south roadway to serve the increasingly developed Green River Valley is unquestioned. The barrier presented by I-405 can only be crossed in limited locations due to is profile. The Lind Avenue crossing east of the site is elevated, where I-405 is generally at grade. Not only would placing an additional crossing in the Lind area be duplicative but also quite expensive. West of the Lind crossing, I-405 is elevated to permit it to cross the Springbrook Creek and West Valley Road. The potential crossings are, therefore, quite restricted. A thorough analysis of practical alternatives narrowed the selection to the subject site. 3. The subject site is located adjacent to Springbrook Creek in two locations near the north and south ends of the project. Once relocated and replaced by the P-1 Channel the alignments will be parallel to each other. The proximity requires careful excavation in order to avoid erosion and siltation of the waterway. Approval and timing of excavation will be subject to the Department of Fisheries since salmon pass through and possibly spawn within the waterway. 4. The approximately 278 trips will be spread over approximately eight months, although excavation will probably be concentrated in the earlier phases of the development. The number of trips should not impair the traffic flow in the area. The roadways leading to and from the site will be maintained in a clean condition. 5. While staff originally required removal of the spoils from the City, that requirement is unnecessarily strict. The materials obviously cannot be left in the Valley without providing compensating flood water storage, and storage of the materials in any area adjacent to the excavation site would unnecessarily interfere with the ecosystem of that area. The City has already inadvertently smothered an area of significant trees meant to be preserved in a location north of this area by temporarily storing spoils in a sensitive location. Therefore, in order to eliminate a repeat of such events, materials will have to be moved out of the Green River Valley as they are excavated, or utilized immediately in a separately approved fill site. 6. The Department of Ecology and the City have agreed to provide sufficient setbacks to limit erosion potential and run-off into the water -way. In addition, the applicant has agreed to hydroseed the subject site prior to the next rainy season to minimize erosion and siltation sources. The Department of Ecology will also eventually oversee the issuance of the Shoreline Permit (See Shoreline Conditional Use Permit below). 7. The excavation should not jeopardize the waterway as long as care is taken with the spoils. The oil/water contaminants should not generally be a problem during excavation, they will be more the result of the actual functioning of the roadway. Nonetheless care' should be exercised with the construction equipment to assure that oil or diesel spills do not occur around the heavy construction equipment needed for excavation. CITY OF RENTON PUBLIC DEPARTMENT SP-099-87 and CU-101-87 January 14, 1988 Page 5 • Shoreline Conditional Use Permit 8. A Conditional Use Permit is required under terms of the City's Shoreline Master Program. The activity is not a use which is permitted as of right within 200 feet of a shoreline. The shoreline in this case is the existing alignment of Springbrook Creek which approaches the proposed Oakesdale right-of-way in two locations. Oakesdale and Springbrook approach each other near the north end, near Grady Way, and near the southerly terminus of the proposed segment, near S.W. 16th. Section 7.15 of the Shoreline Program requires that major arterials be located away from shorelines, with shoreline routes reserved for generally low speed recreational traffic. The applicant, therefore, has applied for a Conditional Use Permit to allow the proposed use in the proposed location. 9. The Shoreline Program designates this segment of Springbrook as an urban environment, more than likely in deference to its location. It is almost completely surrounded by urban uses or zoning which permits high intensity urban uses. It is also straddled by I-405 and Grady Way along this segment. 10. As was indicated above, the Oakesdale alignment was chosen as one of the few practical locations for a crossing of I-405. While the roadway segment will have to be trenched below and into the water table, other crossings would have required similar trenching or great expense to elevate a crossing. The City already has the Lind overcrossing which is intended to be widened and rebuilt within the next few years as part of the I-405 expansion. The need for additional northerly access into and out of the Valley is unchallenged. In addition, the roadway is part and parcel of the Comprehensive Plan which could not designate the Valley for high intensity uses without complementary access roads. 11. The proposed fill and grade will be closely scrutinized by the applicant and both the Departments of Ecology and Fisheries to assure that sedimentation from erosion and construction is kept to negligible amounts. Wetlands are not associated with Springbrook Creek where this segment of Oakesdale is proposed and, therefore, wetlands will not be jeopardized by the proposal. 12. The Master Program acting somewhat as a zoning overlay cannot account for all site specific conditions and circumstances and therefore, flexibility is afforded by offering both variances and conditional uses from the specific criteria. Fill, grading and excavation in a shoreline area are subject to the conditional use criteria. Approval of a conditional use in a shoreline area depends upon whether the use: 1) is compatible with permitted uses in the area; 2) is compatible with the surroundings and the Shoreline Program; 3) will not interfere with the public use of the shoreline; and 4) is in harmony with the purpose of the Shoreline Program. The proposal appears to reasonably satisfy these four requirements. 13. The proposed arterial, the ultimate reason for the excavation work, is necessary to allow the Valley area to fulfill the objectives of the Comprehensive Plan. The Comprehensive Plan designates the area for Manufacturing and Office Park uses. A major arterial link is necessary to allow the growth the Comprehensive Plan appears to envision. The surrounding uses, far from natural or even water related, are for the most part industrial and commercial. The Metro Treatment Plant is northwest of the site, Longacres, itself a major traffic generator during its season, is due west and emerging office park uses are north and south of the area. The eventual arterial is compatible with these surrounding uses. 14. The City is developing a separate trail system to parallel the waterway and afford public access to the shoreline. The corridor envisioned will accommodate pedestrians, runners and bicyclists. The roadway is strictly utilitarian and is mainly for access into and out of the Valley. In any event, the tunnel and sunken nature of the roadway would limit any visual association' with the adjacent water. 15. Again, the roadway, while generally utilitarian, will serve its intended purpose. It will help move vehicles in and out of the developing Valley. The roadway will be as compatible with the surrounding uses and land forms as most roadways. The requirement that at least the northern and southern extremes mirror the landscaping of the respective adjacent segments of Oakesdale should help integrate this segment with existing and proposed segments. This roadway will, after all, be one of the major gateways to the high quality office park developments proposed south of I-405. CITY OF RENTON PUBLIC WC____S DEPARTMENT SP-099-87 and CU-101-87 January 14, 1988 Page 6 16. Since this segment of Springbrook Creek is designated as an urban environment, will eventually be realigned, and runs through the heart of an industrial area, the proposed roadway appears to be in harmony with the general purposes of the Shoreline Program. 17. Therefore, the Conditional Use Permit should be issued to allow the proposed excavation for the alignment of Oakesdale. DECISION The Special Permit to allow the excavation of approximately 5,000 cubic yards of material and the Shoreline Conditional Use Permit to allow that excavation adjacent to the Shoreline of Springbrook Creek are approved subject to the following conditions: 1. The applicant fully comply with all conditions imposed by the ERC. 2. The applicant comply with all conditions imposed by the Washington State Department of Fisheries and receive written approval of it actions from that agency. 3. The applicant comply with all conditions imposed by the Washington State Department of Ecology and receive written approval of it actions from that agency. 4. The applicant shall hydroseed the subject site not later than November 1, 1988. The applicant shall complete all work not later than that date. If work is not completed by that date all operations shall be suspended until March, 1989. 5. All excavated material shall be removed from the Green River Valley and all material so removed shall be transported out of the City or used in a fill location which shall have a valid fill and grade permit issued under separate authority. This permit is only for the excavation of material from this site and carries no privilege or right to dispose of this material in other locations within the City. 6. No temporary storage of the material or stockpiling of material shall occur outside of the boundaries of the profile shown on Exhibit #2, and under no circumstances shall material be stored in any manner which could jeopardize the integrity of the adjoining waterway. 7. All work shall occur only between the hours of 7 A.M. and 7 P.M., Monday through Friday. All work shall be subject to on-site inspection by the Departments of Ecology and Fisheries. Those departments shall be entitled to issue stop work orders effective immediately if the applicant violates any conditions that either of those respective departments have imposed. 8. Landscape materials, and specifically street trees, shall be planted to match the species of trees planted in the adjacent Oakesdale segments. The applicant shall continue the streetscape theme developed along the adjoining segments of Oakesdale and as implemented by adjoining property owners, particularly with respect to the boulevard streetscape north of this segment. 9. The applicant shall install a water detention tank system under the roadway if the Departments of Ecology and Fisheries recommend such installation. ORDERED THIS 14th day of January, 1988. FRED J. KA AN HEARING E MINER TRANSMITTED THIS 14th day of January, 1988 to the parties of record: John Adamson Developmental Program Coordinator Public Works Department City of Renton TRANSMITTED THIS 14th day of January, 1988 to the following: CITY OF RENTON PUBLIC DEPARTMENT SP-099-87 and CU-101-87 January 14, 1988 Page 7 Mayor Earl Clymer Councilman Richard M. Stredicke Richard Houghton, Public Works Director Larry M. Springer, Policy Development Director Members, Renton Planning Commission Ronald Nelson, Building & Zoning Director Don Erickson, Zoning Administrator Glen Gordon, Fire Marshal Lawrence J. Warren, City Attorney John Adamson, Developmental Program Coordinator Gary Norris, Traffic Engineer Renton Record-Chronicle Pursuant to Title IV, Section 3015 of the City's Code, request for reconsideration must be filed in writing on or before 5:00 P.M. January 28, 1988. Any aggrieved person feeling that the decision of the Examiner is based on erroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence which could not be reasonably available at the prior hearing may make a written request for a review by the Examiner within fourteen (14) days from the date of the Examiner's decision. This request shall set forth the specific errors relied upon by such appellant, and the Examiner may, after review of the record, take further action as he deems proper. An appeal to the City Council is governed by Title IV, Section 3016, which requires that such appeal be filed with the City Clerk, accompanying a filing fee of $75.00 and meeting other specified requirements. Copies of this ordinance are available for inspection or purchase in the Finance Department, first floor of City Hall. The Appearance of Fairness Doctrine provides that no ex parte (private one-on-one) communications may occur concerning pending land use decisions. This means that parties to a land use decision may not communicate in private with any decision-maker concerning the proposal. Decision-makers in the land use process include both the Hearing Examiner and members of the City Council. All communications concerning the proposal must be made in public. This public communication permits all interested parties to know the contents of the communication and would allow them to openly rebut the evidence. 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FOR IDENTIFICATION OF ADDITIONAL FLOOD HAZARD AREAS):. #_, .....2.•.••:...THE GREEN RIVER FLOOD HAZARD AREA.DELINEATIONS.AND•ELEVATIONS ••.• `° OUTSIDE-OF'.THE•;,MiIN CHANNEL:REPRESENT ANALYSTS"CONDITIONS WITH LEVEE '. SYSTEMS ASSUMED REMOVED WHERE..FRE.EBOARD IS:LESS'THAN,2O.FEET. .. : • (REFERENCE LEVEE SYMBOL PER.LEGEND"FQRLEVEE SYSTEM DESIGNATIONS). .3.. 'FLOODWAY DELINEATIONS REPRESENT MINIMUIV�((4GHANNEL WATER SURFACE ELEVATION;TOP;?WIDTHS. :REGULATORY FIOODW'.;YFOR LEVEED SECTIONS - • EXTENDS TO THE PROTECTED TOE OF THE'.LE EE' YSTEM:... 'j r�J S*NC1 .' ‘,..,..\ se4 ,_ (Is sisi crry c ,,, ' ' MMtt V • • WORK MAP FOR NO 21 21 of 33 U Alii FLOOD INSURANCE RATE MAP & CONTRACT NO. 3UILDING FLOOD BOUNDARY AND FLOODWAY MAP EMW-85-C-1893 COMMUNITY: I SOURCE OF FLOODING: KING COUNTY, WA L GREEN RIVER, icy:. TnN) BLACK RIVER, SPRINGBROOK CREEK • 66 . C- TO-C OF f3&4R/NG 57.e1N/'ARO , REC.,41 ST, - • /-�,RESTREBSE/J CONC. SLAB IV C./. P GONG ' ea' IOECll SLAB .4N0 • APPROACH LAIC OVERLAY MATCH E%/ST SL4S(TY/� PAVEMENT; - CTVP) EACH S/DE) o.oo% I'� ( • uli=.tli�r fI11l=Rlst- 1la---:-------- --- -- _ '111 1111,i11f►^)IN 1, CAST-IN-PLACE a6? G'LEAe k1 "-""• . FILL.. PILE wV P/LE C4P - � lV PVCO/J LAGGING STkC/CTU,eAL = , C.I I? CONC. W f3ETweE:v soLW/ER CO�/CIETE TJie/1/EN STEEL SOLD/FJP� FASC/Aill- r 11 P/LES • ¢ I WALL III J` P/LES C�- 5 CENTE2S-�'ti. Z UIVIJ/�9TURf3ED _.s I SEE DETA/L 1/�(" c N �RTH II11I l SOL/�/ER O/LE _' ' 2% ' �� -In �r c -� • (STEEL P/LE) DIL i �'~ ! WALL FOOT/NG 14/00/DEN LAGGING !' No (Ill I I Gii �'°iliSEPArg CJP CONC. FASCIA• /N.4LL — UN S /N IIIII I = SEE META/L iA STRUCTURAL TEE 1/1/ELIDED TO �`� SOW/ER P/L E FOR ,VC , LAGGING AIVO Q AC. FASC/A //V.4L.L 'f ETA I L r/Th . TYPICAL ULTIMATE 3W T/ONI . /VT'S OAKESa4L4 OVEIC2056ING • . NTS I 24•(H -t 2) FSF/F T OF- WA L. .1...._Lii_r_ 405 ROADWAY • 111�=rcl II(I DAKESDAL E AVE ; ` 1 (LOOK/N6 SOUT//) • all • • • P-/ CHANNEL ,fXCA\./A7 0A/ •` ' H • , (F'L/T'URE) -kg d AC /V ' PA'ES S � /F T • • • SOL D/ I A it /LE O/� 'TE/� P/ ES p r //.. • . 9/tr/E- G W T 1llr241l-rril TES: • _, Water pressure is not included in either active or • /ZO i' 'S/ ./E 7- passive pressure. F 2) Active pressure - 39 psf/ft. of depth above g.w.t. 2cD PSF/F T • 20 psf/ft. below g.w.t. - �. 3) Passive pressure • 120 psf/ft. below g.w.t 4) Active pressure acts over one pile diameter. 5) Passive pressure acts over two pile diameters. - __ 6) Actual active passive net pressures below the excavation lines are dependent upon pile sizes, spacing • and pressures shown must be adjusted accordingly.. _, -7) The pressure diagrams shown are only to be used in preliminary sizing and layouts. The final designs will . 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Q 1 1iW 'ff I WI - '�' / r ITTJ 11QI111111 !III Mk. ------- --- -- ;/' 1 •' -rnrt II I11TPrirr - --•- —L _ , _' I , IIIII I W II III lii , i- ., SUbNECI° . 1111 1 ------11513. ;- . \ .1.:.-/ .L:..._t.t.:1:;-- k;. tr Ul It. v • -- \-- ,- ° 0 I I I I- I_____________. ..._ . - A r , . , CITY OF RENTON, PUBLIC WORKS DEPT. 44:1 ' t, SPECIAL PERMIT: SP-099-87 CONDITIONAL USE PERMIT: CU- 101-871/%%%4 SHORELINE MANAGEMENT: SM-011-87 APPLICANT CITY OF RENTON .TOTAL AREA 1.86 ACRES PRINCIPAL ACCESS OAKESDALE AVENUE S.W. - a. EXISTING ZONING M-P (MANUFACTURING PARK) • EXISTING USE UNDEVELOPED • PROPOSED USE MAJOR ARTERIAL STREET COMPREHENSIVE LAND USE PLAN MANUFACTURING PARK/MULTIPLE OPTION & GREENBELT. COMMENTS THE PROJECT VICINITY IS IN THE OAKESDALE AVENUE S.W. AREA BETWEEN r S.W. 16th STREET AND S.W. GRADY WAY. ' • 0 . I3RG %---1.-- GG ' C—TO-C OF 5EARIII/G APPROACH SLAB , s ise--- LMC MEM • ••• •:••. ', CIP CDIVC. IJECK ' `SLAS O!/ERLAY NEOPRENE /5&4g'ING PAO STANIDARD PRECAST, r--------1 PRESTRESSED 1 , II CONCRETE SLAB a. it • ,> 1 II • ' II o 1 1A WELDED STUD TO I I •° ,* STRUCTURAL TEE i 1 I i 17 '' ' 14 •o, ' TEMPO. 4Ry, T7MEER I oy :•'.• ASSUME 61-0'FACE— TO— 1 I PACOF WALL '11 • 581 ccx>a LINE 7Z7 CUrP13 I T •' ' ' C/NE 1 i . .0..0• Y :.o -C/P TRAFFIC BARRIER 1 °• •' TOP Of DWV I • • 0 1 :o'..,• —CAST IN PLACE COACRETE EASC/A WALL • — 1 .(PERMANENT STRUCTURAL • I ® lil/ALL) ��_$TRG C7'URAL TEE 14/E'- D TO PIPE PILE • /r) ,77-% ,TA L. alai . ! . 6 CITY OF RENTON Earl Clymer, Mayor ' Traffic Engineering Divan , • 31\vi voses Qvgioo January 12, 1988 TO: Fred J. Kaufman, Hearing Examiner FROM: John R. Adamson, Program Development Coordinator SUBJECT: Additional information relating to Shoreline Permit for Oakesdale Undercrossing, File Nos. ECF-083-87, SP-099-87 and SM-011-87 During the hearing for the above-named project you raised a question about lighting for the trail under I-405. This letter addresses that concern. - The City of Renton has placed lighting along trails in the past. . This was done where pedestrian usage was projected for non- daylight hours, 4or was unusually high. It is the current intent of the Public Works Department to place lighting along the trail under I-405. (.4 /le JRA:ad cc: R. Houghton JRA2 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2620 / �r HE/Dskl AG1588 • CITY OF RENTON HEARING EXAMINER PUBLIC HEARING AGENDA COMMENCING AT 9: 00 A.M. : JANUARY 5, 1988 COUNCIL CHAMBERS, SECOND FLOOR, RENTON MUNICIPAL BUILDING CITY OF RENTON, PUBLIC WORKS DEPARTMENT Application for special permit to allow removal and grading of 5, 000 cubic yards of material to construct 790 lineal feet of Oakesdale Avenue S.W. as a major five-lane arterial road and a tunnel undercrossing of I-405 and application for Conditional Use Permit to allow the subject roadway to be located in the vicinity of the P-1 channel and in an area designated as "greenbelt" on the City's Comprehensive Plan. A shoreline permit is also pending with the subject application. The property is located in the vicinity of the Oakesdale Avenue S.W. area between S.W. 16th Street and S.W. Grady Way and directly east of the proposed P-1 channel. File Nos. : ECF-083-87, SP-099-87, CU-101-87, SM-011-87. BUILDING AND ZONING DEPARTMENT PRELIMINARY REPORT TO THE HEARING EXAMINER PUBLIC HEARING JANUARY 6, 1988 APPLICANT: Cit1 of Renton Public Works Department FILE NUMBER: ECF-083-87, SP-099-87, CU-101-87 LOCATION: Property located from S.W. Grady Way to S.W. 16th Street A. SUMMARY AND PURPOSE OF REQUEST: 1. Application for special permit for fill and grade to remove 5000 cubic yards to construct a roadway tunnel under I-405. 2 . Application for conditional use permit to locate the proposed roadway in the vicinity of the shoreland adjacent to Springbrook Creek. B. GENERAL INFORMATION: 1. Owner of Record: City of Renton 2 . Applicant: City of Renton 3. Existing Zoning: M-P 4 . Existing Zoning in the Area: Greenbelt, adjacent to Springbrook Creek; M-P, Manufacturing Park; 0-P, Office Park; B-1, Business; P-1, Public Use 5. Comprehensive Land Use Plan: Greenbelt, Manufacturing Park/Multiple Option 6. Size of Property: 1.86 acres (81,400 sq. ft. ) 7. Access: Oakesdale Ave. S.W. , S.W. Grady Way, S.W. 16th Street 8 . Land Use: Undeveloped 9. Neighborhood Characteristics: North: Undeveloped, Industrial, Office East: Undeveloped, Industrial, Office South: Undeveloped West: METRO Sewage Treatment Plant, Longacres Raceway • Building and Zoning E�` artment Preliminary Report te ,2ie Hearing Examiner _ Public Hearing City of Renton Public Works Department January 6, 1988 Page 2 C. HISTORICAL/BACKGROUND: Action File Ordinance Date Initial Annexation N/A 1745 4/14/59 Amendment to Annex. N/A 1764 5/27/59 Amendment to 1764 N/A 1928 12/22/61 (GS-1 Zone) Rezone to L-1 N/A 2767 3/8/73 (Light Industrial) & B-i (Business) Rezone to L-1 N/A 2873 8/14/74 (Light Industrial) Rezone to M-P N/A 4036 12/86 (Manufacturing Park) D. PUBLIC SERVICES: 1. Utilities a. Water: Twelve-inch water mains along S.W. 16th and S.W. Grady Way. b. Sewer: Twenty-four sewer line along S.W. 16th. METRO trunk line along west perimeter of P-1 Channel. 1. c. Storm Water Drainage: Natural channel -- westward flow into Springbrook Creek. 2. Fire Protection: Provided by the City of Renton as per ordinance requirements. 3. Transit: N/A (METRO transit route along S.W. Grady Way) . 4. Schools: a. Elementary Schools: N/A b. Middle Schools: N/A c. High Schools: N/A 5. Recreation: Recreational activities are not available at present. A scenic corridor is planned at the periphery of the site, along Springbrook Creek. That corridor is to be coordinated with the proposed project. E. APPLICABLE SECTIONS OF THE ZONING CODE: 1. Section 4-730, Manufacturing Park (M-P) . 2 . Section 4-3010 Special Permits. 3. Section 4-2301/2325, Excavation and Grading. 4. Section 4-745 Greenbelt Regulations. F. APPLICABLE SECTIONS OF THE COMPREHENSIVE PLAN OR OTHER OFFICIAL CITY DOCUMENT: 1. Green River Valley Plan, City of Renton Comprehensive Plan Compendium, 1986 (Pgs. 31-32) . 2. Transportation Goal, Objectives and Policies, City of Renton Comprehensive Plan Compendium, 1986 (pgs. 19-21) . Building and Zoning D irtment Preliminary Report to tine Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 3 3. Chapter 23, Mining, Excavation and Grading Ordinance (City of Renton Building Regulations) . 4. Chapter 25, Shoreline Master Program (City of Renton Building Regulations) . G. DEPARTMENT ANALYSIS: 1. Special Permit a. The Applicant, the City of, Renton, is requesting a fill and grade permit to allow the excavation of 5000 cubic yards of material for the construction of a 790 linear foot roadway. The development site includes 1.86 acres, located along the east side of Springbrook Creek, between S.W. Grady Way and S.W. 16th Street. The purpose of the project is to develop one segment of the proposed Oakesdale Avenue north-south bound corridor to accommodate vehicle traffic through the Renton Green River Valley. The project is scheduled to begin March of 1988 and to be completed in October, 1988. b. The Environmental Review Committee issued a Determination of Non-Significance for the project, with required conditions to mitigate environmental impacts, as identified during the environmental review process. The decision Dwas made on November 18, 1987. The deadline for written comments to be submitted to the City was December 8, 1987. For administrative reasons, this deadline was extended to ' December 14. The appeal period was completed on December 28, 1987. The Environmental Review Committee recommended that the proposed project, with conditions designed to mitigate k environmental impacts, would appropriately assist in meeting Renton's need for additional north-south transportation corridors through the Green River Valley. The applicant has agreed to these conditions as follows: 1. That erosion control measures acceptable to the City of Renton and to the Washington State Department of Ecology (DOE) be utilized for the duration of the project, including the construction and maintenance of siltation fences, runoff retention facilities and siltation ponds. • 2. That the project be scheduled in coordination with parameters set by the Washington State Department of Fisheries to minimize impacts on downstream water quality in Springbrook Creek during critical fisheries periods. 3. That street landscaping plans (e.g. , species, size, location of plantings and other groundcover) be approved by the City's landscape architect with respect to suitability to the project site and compatibility with vegetation in the vicinity. 4. That surface water runoff from the project site will be treated before being permitted to drain into the P-1 Channel, with both oil/water separators and grass lined biofiltering swales, or with alternatives systems which have been approved by the Department of Fisheries. Additionally, the applicant has agreed that material which is excavated from this site will be immediately Building and Zoning DTrtment' Preliminary Report to Jte Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 4 and permanently moved to an approved site outside the City limits of Renton. At no time will fill storage be stored within the City of Renton. Project operations will be confined to hours between 7 a.m. and 7 p.m`. to minimize impacts (e.g. , noise, congestion) upon areas adjacent to the site. c. Under Section 4-2303 (2) of the Mining, Excavation, and Grading Ordinance, a series of criteria is established to determine whether the proposed excavating and filling operations are compatible with existing land uses and with plans for future land uses. The following analysis demonstrates that the application for grade and fill activities meets compatibility standards, with mitigation measures as required by the City, and agreed to by the applicant. 1. Size and Location of the Activity The 1.86 acre site is situated at a location which provides a logical route for the connection of existing segments of Oakesdale Avenue to provide an additional north-south corridor through the Green River Valley. The proximity to Springbrook Creek requires special measures to protect the integrity of that water body during grade and fill operations. The applicant has agreed to adhere to requirements as established by the City of Renton, the Washington State Department of Ecology, the Washington State Department of Fisheries and other appropr„fate local and state government agencies to achieve- erosion control, to manage runoff, and to protect stream/shoreline habitats for the duration of this project. 2. Traffic Volume and Patterns Traffic volume and patterns at the project site will cause no difficulty as the site is not developed at this time. Reports from the City of Renton Traffic Engineering Division, Public Works Department and the Police Department indicate that only minor impacts are anticipated in the area; existing traffic control devices at S.W. 16th and at S.W. Grady are considered to be adequate to handle traffic influx from this project. The Fire Prevention Bureau will require that an access route be maintained through the construction period for use by emergency vehicles. 3. Screening, Landscaping, Fencing and Setbacks During the fill and grade segment of this project, no special screening, landscaping or fencing will be required. Setbacks have been established in accord with requirements set by the Department of Ecology. Hydroseeding and permanent landscaping will be accomplished immediately following completion of the building of the roadway in a manner required by the City's landscape architect. Hydroseeding and landscaping will be designed to protect and enhance the site. The site must be hydroseeded and the rehabilitation plantings completed prior to November to ensure that the shorelands of Springbrook Creek are stabilized prior to the beginning of the autumn rains. Hydroseeding should occur as early as possible to minimize erosion. Building and Zoning D. irtment D Preliminary Report to . .oie Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 5 4. Unsightliness, Noise, and Dirt Disruption to the project site and attendant impacts upon the vicinity will occur during grade and fill activities. Hydroseeding will be required as soon as possible following grade and fill to control unsightliness and dirt adjacent to the project. No significant noise is anticipatef or grade and fill activities by the Public Works Division. Operations will be confined to the hours between 7 a.m. and 7 p.m. to restrict this impact to the customary working day. Access to and from the site will be limited to Grady Way and I-405 -- project traffic is not expected to exceed noise levels currently permitted on those roadways. The City of Renton will require the project contractor to maintain the roads in the vicinity of the project in a clean manner at all times, free of direct, dust and debris. Measures which are acceptable include, but are not limited to, washing materials from the roadway with a street cleaner or water truck. 5. Surface Water The City of Renton,the Department of Fisheries, and the Department of Ecology are concerned with the management of the surface water moving from the subject site. The proposed drainage system, including oil/water separators and biofiltering swales, does appear to meet specific concerns for protection of shoreline and water habitats during fill and grade operations. However, regular monitoring of the site by the City of Renton will be required for the duration of this project. Additionally, particular effort should be made by the project contractor to complete operations and related hydroseeding/landscaping prior to the major rainy season which begins in the autumn. 6. Length of Time the Application of the Existing Operation has to Comply with Non-Safety Provisions of this Ordinance This proposal does comply with the established safety provision; therefore, this requirement is not applicable for the proposed project. d. In addition the above-listed criteria, Section 4-2303 (2C) of the City of Renton Mining, Excavation and Grading Ordinance, requires the Hearing Examiner to mandate Site Plan Review (Section 4-738) concerning "the applicant's proposed use of the site after termination of the fill/grade activity and the phasing of the progressive rehabilitation of the site to the proposed use of the site. " The new use of the site is required to be consistent with the Comprehensive Plan and compatible with the surrounding area. The Environmental Review Committee has determined that the proposed use for this site is the first phase , of the development of a five-lane roadway designed to link two sections of Oakesdale Avenue S.W. The Comprehensive Plan designates the project site as including areas of Greenbelt, Manufacturing Park/Multiple Option and Commercial/Business uses. The roadway will provide a desirable linkage among and between industrial and commercial users in the vicinity and in community at large. Building and Zoning D irtment Preliminary Report to Lie Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 6 With the inclusion of proposed measures for environmental protection, this roadway can also be considered to be consistent with the Comprehensive Plan goals/policies for the site and for the surrounding area -- the new roadway could increase accessibility to the adjacent Springbrook Creek and roadway plans include such amenities as accommodations for non-motorized traffic on the Springbrook undercrossing. Conditions for management of erosion, surface water and for project landscaping further ensure that the project will meet the development standards of the City of Renton. 2 . Conditional Use Permit a. The Applicant is seeking a Conditional Use Permit for the construction of the proposed 790 linear foot roadway proximate to shorelands of Springbrook Creek. b. As the proposed development is located, in part, in the "environmentally sensitive" lands adjacent to Springbrook Creek, it is not categorically exempt under WAC 197-11-305/197-11-800. A Conditional Use Permit is required for the proposed development under RCW 197-11-108 and the City of Renton Shoreline Master Program (December, 1983) , Sections 7. 15 and 8. 03 . c. As Conditional Permit developments are exempt ifrom the requirements of Site Plan Review, no such review was required by the Environmental Review Committee. d. As noted above, the Environmental Review Committee did issue a Determination of Non-Significance on November 18, 1987. Based upon a review of project objectives and specifications, the ERC recommended that the proposed development be permitted, with conditions designed to mitigate environmental impacts upon the shorelands and waters of Springbrook Creek. e. The subject proposal, with conditions required by the ERC, will generally comply with the Conditional Use Criteria established by the Shoreline Master Program. I. The Shoreline Master Program (Section 7. 15) states that: a. Malor highways, primary arterials, freeways, and railways are to be located away from shorelands, except in industrial areas, in order that shoreland roads may be reserved for slow-moving, recreational traffic. The proposed use for the subject property is a primary arterial, which will be located along the shorelands of Springbrook Creek. As such, the project does not comply with Section 7. 15 of the Master Program. The location was' selected by the Applicant and approved for recommendation by the ERC for several reasons. Factors which dictated the current siting included: 1) the need for' improved circulation linkages in the Green River Valley; 2) the existence of manufacturing/industrial zones along the proposed corridor; 3) the existence of lands zoned and developed for manufacturing, industrial and commercial uses adjacent to the proposed corridor; and 4) the coordination of this development with public use/access developments planned for Springbrook Creek by the City of Renton. The proposed routing for the roadway has been suggested from among a number of options as the alternative which will provide the most logical linkage, via Oakesdale Avenue, to local users and to communities to the north and to the south of Renton. The proposed option has Building and Zoning Department Preliminary Report to le Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 7 been evaluated as one which can accommodate the maximum projected vehicle trips along the most direct route. The proposed route also offers limited disruption to existing utility service lines. The subject proposal provides , for optimum public safety because roadway design includes a relatively straight, grade level development, clear of barriers, with good sight distance. Finally, the area proposed for development is defined by the Shoreline Master Program as being within the "Urban a Environment". Development is permitted in such areas, with the provision that conditions may be established to ensure protection of the existing environment. Conditions have been established by the Environmental Review Committee to control soil erosion and runoff and to conserve water and shoreland habitats. The Applicant will coordinate will provide opportunities for future public recreation developments. b. 7. 15.02A. Shoreline roadways should be scenic boulevards and are to be restricted to exiting rights- of-way where possible. Landscaping requirements for the proposed roadway are to be established and enforced by the City of Renton landscape architect, under a condition required for this project by the ERC. Parameters will include, but not be limited to, species, size and location of plantings and ground cover. Hydroseeding will be required immediately following completion of excavation and building of the proposed roadway segment. Utilization of existing roadways, in lieu of the proposed roadway, for transporting of north-south vehicular traffic is not practical for meeting current or projected future transportation needs for the City of Renton. City Comprehensive Plans and the Valley Transportation Improvements Program Report cite an immediate need for an improved north-south linkage. The proposed Oakesdale Avenue linkage allows a direct connection with such major roadways as AR 900 and SR 167 as well as access to I-5 and I-405. Site location and character will permit t1e construction of a roadway which meets requirements for safe, efficient corridors set by Renton's Traffic Engineering, Police and Fire Departments. c. 7. 15. 02B. Roads located in wetland areas should be designed and maintained to prevent erosion and to permit a natural movement of ground water. There are not associated wetlands adjacent to this segment of Springbrook Creek. However, the ERC has established conditions for this project to ensure erosion control and to accommodate water run-off through such devices as siltation channels, fun-off retention facilities and landscaping requirements. d. 7. 1502C. All debris, overburden, and other waste materials from construction should be disposed of in such a way as to prevent their entry by erosion from drainage, high water, or other means into any water body. The project will incorporate temporary erosion controls using siltation fences, temporary ponds and rock check dams in roadway ditches to trap sediment. The spoils from the project will be moved outside the City limits Building and Zoning C irtment Preliminary Report to ;.pie Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 8 of Renton. As a condition of this project, the contractor will dispose of approximately 5000 cubic yards of native soils. The contractor will be required to dispose of this material in accordance with Section 2-03.3 (7) of the 1984 Standard Specifications for Road, Bridge and Municipal Construction as amended by the City of, Renton Supplemental Provisions and the ° project Special Provisions. In summary, the contractor disposing of excess material from a City project is required to provide documentation of any and all disposal sites he will be using. This documentation consists of a copy of the Fill Permit from the appropriate jurisdiction, together with any restrictions as to the type and/or quality of fill material which can be disposed of at the disposal site. e. 7.15.02D. Road locations should be planned to fit the topography so that minimum alterations of natural conditions will be necessary. The route proposed by the Applicant for the Oakesdale Avenue linkage to the City of Renton and to adjacent communities requires a crossing under Interstate I-405. The undercrossing will require excavation and construction of a tunnel below the level of the ground water table. The impacts of this excavation, detailed in the application, as noted above, were evaluated by the Environmental Review Committee, and conditions have been established to control anticipated impacts through erosion control, water runoff management systems, and hydroseeding. Other than the undercrossing, the road has been designed at grade with minimal disturbance of land surface. 2 . The Shoreline Master Program (Section 8.03) further states that: x Upon proper application, a conditional use permit may be granted. The objective of a conditional use provision is to provide more control and flexibility for implementing the regulations of the Master Program. With provisions to control undesirable effects, the scope of uses can be expanded to include many uses. Uses classified as conditional uses can be permitted only after consideration and by meeting such performance standards that make the use compatible with other permitted uses within that area. A conditional use permit will be granted subject to each of the following conditions: a. 8. 03.01. The use must be compatible with other permitted uses within that area. The proposed segment of Oakesdale Avenue under consideration in this Application is to be located entirely in a Greenbelt zone. However this segment is designed to link with other portions of this roadway which will be constructed' within industrial and commercial zones. Adjacent properties to the east of the roadway at the proposed site are zoned for industrial or commercial use; these properties are either already developed for these uses or are appropriate for future such development. Therefore, staff believe the proposed use is compatible with other permitted uses in the area. Building and Zoning D'" trtment Preliminary Report to -pie Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 9 NOTE: A detailed discussion of the rational and e conditions for permitting the proposed rout is presented in Section 6-21) -a) and G-2-1) -d) of this report. b. 8.03.02. The use will not interfere with the public use of public shorelines. The project as proposed by the City of Renton will not limit the public use of the shoreline area. Oakesdale Avenue is planned in conjunction with a scenic recreational corridor. The City has planned an extensive trail network throughout the Valley linking the Black River riparian forest in the north with the city-owned wetlands, the Panther Creek wetlands, the Cedar River trail, and the Springbrook creek corridor. This trail system is designed along the western bank of l the Springbrook shorelines along this segment. The proposed Oakesdale Avenue is located along the eastern side. c. 8.03.03. Design of the site will be compatible with the surroundings and the City Master Program. A north-south corridor through the Green River Valley is a key element of City plans to provide adequate access to sites within the surrounding Renton Green River Valley industrial and manufacturing/office park zones and to link this area of Renton with communities to the north and to the south of the City. The proposed Oakesdale Avenue project will serve to provide one segment of this access route. It conforms to the City's Valley Transportation Improvement Program, which is an approved SEPA mitigation program. The Master Program designates the subject property as "Urban Environment". Objectives for use of this environment are to: 1) ensure optimum utilization of shorelines within urbanized areas by providing for public use; and 2) managing development so that shorelines may be used for multiple purposes. Where shorelines are suitable for water-dependent development, those uses are preferred. In all instances, it is desirable to protect public access rights and to enhance the aesthetic environment. The Oakesdale Avenue roadway is proposed along a corridor adjacent to Springbrook Creek. The City's proposal for the development of this roadway provides substantial technical evidence supporting selection of this corridor -- including topography, location, geological stability, accessibility, and sight-distance characteristics. , The proposed project has been planned and coordinated to provide for necessary improvements to traffic circulation patterns through the Green River Valley, which is developed for industrial and commercial use. The development plan, with attendant conditions, has been structured to minimize impacts upon the natural environment through erosion control systems, surface water management systems and landscaping programs required to be acceptable to the City of Renton, to the Department of Ecology and to the Department of Fisheries, as submitted. Building and Zoning D. trtment Preliminary Report to ".pie Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 10 To further enhance existing natural amenities and to create an environment which is accessible, this project is being coordinated with a scenic recreational corridor which the City will build along Springbrook Creek. A plan has been developed to accommodate non-motorized traffic through the undercrossing which will be included in the Oakesdale Avenue development. The corridor and undercrossing access routes will allow water-dependent recreational uses along Springbrook Creek. The planned development will enable effective use of the subject property to meet City circulation management needs and will reserve the shoreline for public access/use. • d. 8.03.04. The use shall be in harmony with the general purpose and intent of the City's Master Program. The proposed road is essentially in harmony with the general purpose and intent of the City's Master Program which emphasizes: 1) planning and coordination of shoreline activities to afford best use of the limited water resources; and 2) ensuring the provision of natural amenities within an urban environment. Project plans for coordinatin of shoreline activities and provision of natural amenities are described in Section 8.03.03 (G-2-2-c) 1 The Master Program policies also recommend the encouragement of aesthetic considerations and the discouragement of uses which may be objectional by virtue of creating offensive or unsafe conditions. The proposed roadway is slated to be located in an area which now is developed for manufacturing, office and commercial uses. Mitigation plans described previously in this section will serve to protect site aesthetics. Noise and odor are inevitable by-products of roadway construction and use. Landscaping plans will be designed to minimize these impacts. In view of the fact that much of the surrounding area is fully developed and is served by local arterials, it is not anticipated that the noise/odor from this proposed development will result in a significant increase in impact upon the area. 3. The subject proposal, with conditions required by ERC, will generally comply with the Conditional Use Criteria established by the City of Renton Building Regulations. The City of Renton Building Regulations (Section 4-748) states that: The Hearing Examiner may grant, with or without conditions, or deny the requested conditional use permit pursuant to Chapter 30, Title IV of the city Code. The Hearing Examiner may limit the term and duration of the conditional use permit. Conditions imposed by the Hearing Examiner shall reasonably assure that nuisance or hazard to life or property will not develop. Criteria for Conditional Use: The Hearing Examiner shall consider the following factors, among all other relevant information: Building and Zoning D Lrtment Preliminary Report to .. ie Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 11 • a. Comprehensive Plan: The proposed use shall be compatible with the general purpose, goals, objectives and standards of the Comprehensive Plan, the Zoning Ordinance and any other plan, program, map or ordinance of the City of Renton. The site of the proposed Oakesdale Avenue South development is designated as Greenbelt and as Manufacturing Park/Multiple Option use in the Comprehensive Plan; the Zoning Map designates the general area for Manufacturing Park use, with a small segment in the southern portion of the site designed for office use. • A detailed discussion of the compatibility of the project with Comprehensive Plan goals is presented in Section G2) -e-2) a) -d) of this report. b. Community Need: There shall be a community need for the proposed use at the proposed location. In the determination of community need the Hearing Examiner shall consider the following factors, among all other relevant information: 1. The proposed location shall not result in either the detrimental overconcentration of a particular use within the City or within the immediate area of the proposed use. A detailed discussion concerning the proposed project location is presented in Sections G2-1) a) and G-2-2)a) -b) of this report. 2. That the proposed location is suited for the proposed use. A detailed discussion concerning suitability of f the project location is presented in Section G2-1)a) b) and e) and G2-2) a) -d) . c. Effect on Adjacent Properties: The proposed use at the proposed location shall not result in substantial or undue adverse effects on adjacent property. The following site requirements shall be required: 1. Lot Coverage: Lot coverage in residential district (R-1 and R-2) shall not exceed fifty percent (50%) of the lot coverage of the zone in which the proposed use is to be located. Lot coverage in all other zones shall conform to the requirements of the zone in which the proposed use is to be located. 2 . Yards: Yards shall conform to the requirements of the zone in which the proposed use is to be located. Additions to the structure shall not be allowed in any required yard. 3. Height: Building and ' structure heights shall conform to the requirements of the zone in which the proposed use is to be located. Spires, belltowers, public utility antennas or similar structures may exceed the height requirement upon approval of a variance. Building heights should be related to surrounding uses in order to allow optimal sunlight and ventilation, and minimal obstruction of views from adjacent structures. Building and Zoning D .Lrtment Preliminary Report to zne Hearing Examiner Public Hearing City of Renton Public Works Department January 6, 1988 Page 12 The considerations listed under the Section "Effect on Adjacent Properties" are not applicable to this project. d. Compatibility: The proposed use shall be compatible with the residential scale and character of the neighborhood (Ord. 3599, 1-11-82) . This Section is not applicable to the proposed project. e. Parking: Parking under the building structure should be encouraged. Lot coverage may be increased to as much as seventy-five , percent (75%) of the lot coverage requirement of the zone in which the proposed use is located if all parking is provided underground or within the structure (Ord. 3903, 4-22-85) . This Section is not applicable to the proposed project. f. Traffic: Traffic and circulation patterns f vehicles and pedestrians relating to the proposed use and surrounding area shall be reviewed for potential effects on, and to ensure safe movement in the surrounding area. As the proposed development is a roadway, it is specifically designed to facilitate vehicle and pedestrian movement to and from the surrounding community. comments upon the proposed project from City of Renton Traffic Engineering, Fire and Police Departments reflect no concerns relating to the safety or efficiency of the roadway, based upon the proposed circulation patterns. g. Noise, Glare: Potential noise, light and glare impacts shall be evaluated based on the location of the proposed use on the lot and the( location of on-site parking areas, outdoor recreational areas and refuse storage areas. Noise is an inevitable by-product of roadway development and use. Efforts will be made by the Applicant to mitigate noise occurring during construction activities. There is no comment from the City or from the State of Washington Departments of Ecology, Fisheries or Transportation expressing concern about anticipated noise levels from the Construction or use of the proposed roadway for travelers or users of adjacent land. h. Landscaping: Landscaping shall be provided in all areas not occupied b buildings or paving. The Hearing Examiner may require additional landscaping to buffer adjacent properties from potentially adverse effects of the proposed use. During the fill and grade segment of this project no special screening, landscaping or fencing will be required. Setbacks have been established in accord with requirements set by the Department of Ecology. Hydroseeding and permanent landscaping will be accomplished immediately following completion ' of the building of the roadway in a manner required by the city's landscape architect. Hydroseeding and landscaping will be designed to protect the natural environment and enhance the site for public use. i. Accessory Uses: Accessory uses to conditional uses such as day schools, auditoriums used for social and sport activities, health centers, convents, preschool Building and Zoning E'_ urtment Preliminary Report to the Hearing Examiner Public Hearing City of Renton Public, Works Department January 6, 1988 Page 13 facilities, convalescent homes and others of a similar nature shall be considered to be separate uses and shall be subject to the provisions of the use district in which they are located. This section is not applicable to the proposed project. j . Conversion: No existing building or structure shall be converted to a conditional use unless such building or structure complies, or is brought into compliance, with the provisions of this Chapter. This section is not applicable to the proposed project. k. Public Improvements: The proposed use and location shall be adequately served by and not impose an undue burden on any public improvements, facilities, utilities and services. Approval of a conditional use permit may be conditioned upon the provision and/or guarantee by the applicant of necessary public improvements, facilities, utilities and/or services. The proposed roadway has been determined by the Department of Public Works to have only minor impacts upon public utilities. An extension of a water main will be required by the Applicant to ensure adequate service tot he vicinity. No other impacts upon utilities or services are anticipated by the City. H. DEPARTMENTAL RECOMMENDATION: Based upon the above presented analysis, it is recommended that the special permit application (SP-099-87) and conditional use permit (CU-101-87) by the City of Renton, Public Works Department, be approved subject to the following: 1. The Applicant shall adhere to the conditions established by the City of Renton Environmental Review Committee. 2 . The Applicant shall adhere to a work schedule between the hours of 7 a.m. - 7 p.m. 3. The Applicant shall remove all excavated material immediately and promptly from the City of Renton to an approved disposal site. 4. The Applicant shall ensure that roadways in the vicinity of the project are free of dirt, dust and debris at all time. 5. The Applicant shall ensure that emergency vehicles have free access to the project site and to the project vicinity at all times. 6. The Applicant should conduct regular site inspections during grade/fill and construction activities to ensure compliance with condition established for surface water management. 7. The Applicant must have hydroseeded the site by the end of October, 1988, to minimize erosion cause by seasonal rains. • y �° . ._._______ . _ _ __ '' .. _„ . , - 1 . __ .- r-Li L.„) vim'; - ``fill. ,11 . I r� Y I I. • -6, s w T INN'..9 ,. ..'. -T.:- in'ss: 7N.. '5 ' 5ji t \i‘ • •, , Qar Q ^`.::— , :,., .. ti- 1 Z 0 I t.,..2e\ i • I •. i p .. ] \ I . . ,,, ... ct , ' I U 1 • ' 0 I bZ I i I •' I� 0SA L t a ' •�•l9� - LAN • ,Q � _. ^"`',5,� 1 1 1 3 (µN . ER . 4 NORiT� mill I1 a - - ' 5101110AI II;hul jl ' iP I : I1i 0:Iiirjali iii1110111 3 fLEil:rf �' ICI / wuiillll1 1111111 f __ -- _ --.:--: "::>' ""lit g A - . I • � � II' � �� .�.� • c . -•- ; -- -_� _ 11041111Wirthillti'. Tirlift : i I • ,�� �� IIIIwri!!4A4T� � I I�II ��. , . ire. . •1, i t, .� � n 0 II. r Q . 1, Q • r , 3 DI I \ . , • CITY OF RENTON, PUBLIC WORKS DEPT. 41 , SPECIAL PERMIT: SP-099-87 CONDITIONAL USE PERMIT: CU- 101-87 SHORELINE MANAGEMENT: SM-011-87 . APPL I CANT CITY :OF RENTON TOTAL AREA 1.86 ACRES PRINCIPAL ACCESS OAKESDALE AVENUE S.W. EXISTING ZONING M-P (MANUFACTURING PARK) . 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I;!r 1••000000000•� ,� f ..7-•��• VII■■' _-- I•'F _ __(t—pp_�/___ __ .�■■■r■■■■11■., OOO o loll•,�. �. •� _ 0000000• `•..—.� I •{ 1 ?'TeS!e3 /�_...,,,.,..�«.-, w nx.n1`r'Lw•' _�'A_. •00000•.`i00• 4P ^� ^� ....''�, [4(,C.• ,/1 • CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ENVIRONMENTAL CHECKLIST NO. : ECF-083-87 APPLICATION NO(S) . : SP-099-87, CU-101-87, SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. PROPONENT: Public Works Department LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24, T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax . Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. LEAD AGENCY: City of Renton, Building and Zoning Department. The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43 .21C. 030 (2) (c) . This decision was made after review of an expanded environmental checklist and preliminary site plan, on file with the lead agency. Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4- 2822 (D) Renton Municipal Code (see attached sheet) . These conditions .. are necessary to mitigate environmental impacts identified during the environmental review process. This DNS is issued under WAC 197-11-340. The lead agency will not act on this proposal for fifteen (15) days from November 23, 1987. Any, interested party may submit written comments which must be submitted by 5: 00 p.m. , December 8, 1987, in order to be considered. A fourteen (14) day appeal period will commence following the finalization of the DNS. Responsible Official: Environmental Review Committee City of Renton 200 Mill Avenue South, Renton, WA 98055 Phone: 235-2500 DATE OF DECISION: November 18, 1987 EFFECTIVE DATE: November 23, 1987 Radagi& ld G. Nelson v''r• . .pring- Building and Zoning Director Policy •:: elop t Director Richard Houghton Public rks Director DETERMINATION OF NON-SIGNIFICANCE MITIGATION MEASURES PROJECT:. Oakesdale Ave. S.W. (between S.W. Grady and S.W. 16th Street) including street undercrossing under I-405. ENVIRONMENTAL CHECKLIST NO. : ECF-083-87 APPLICATION NO(S) . : SP-099-87, CU-101-87, SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 ) of Section 24, T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. CONDITIONS: 1. That erosion control measures be taken and adhered to during construction including siltation fences, runoff retention and siltation ponds; 2. That the applicant coordinate with the Department of Fisheries on scheduling so as to minimize impacts to downstream water quality . during critical fisheries periods; 3. That street landscaping be approved by the city landscape architect as to size, species, spacing, etc. as well as to compatibility with other landscaping in the area; 4. That surface water runoff be treated with both oil/water separators as well as grass • lined biofiltering swales before being allowed to drain into the P-1 Channel. - REVIEWING DEPARTMENT/DIVISION : C;0J01 (1-)6 ,DjUj<S1O1 APPROVED , APPROVED WITH CONDITIONS LI NOT APPROVED PcL, ., s L b • 1. . .0 �0 ru P i EAr-) NR4, s 1lV U Rz i"> T(v)ti,• I� � s��}C O « oU 1Z, —I SI }c���,+� ( ; l�4-"�r ��� ( > its J ����Yt. •7ff'6 1.\'Pu'Ox-viR06) 0r11.11,-)4&3-De c pc LvP)Tlf/� /1 � �, 3u,c?jc .../ sE71 10 p 1 111,6 rau1 ?NTHp\wivb 11-1-6 C1iI;rv11.0 .131-lr,vi,4.) I ,r � I�r���v'�►�� ` cY)I\J ps R ( a 6 POpw,-II ) i` \--)0 B C A C 1lr\lad t2l I;1,., \S I\:v'f JeA) DATE : SIGNATURE OF DcI 'ECTOR OR AUTHORIZED REPRESENTATIVE REVIEWING DEPARTMENT/DIVISION : ypu.,) APPROVED [I] APPROVED WITH CONDITIONS LI NOT APPROVED • r ` . • l4I a,' . : 1110, DATE: SIG -LTURE OF DIREC .f4 ' OR AUTHORIZED REPRESENTATIVE • REVIEWING DEPARTMENT/DIVISION : 1 261) 6, • ELAppRovED ® APPROVED WITH CONDITIONS LI NOT APPROVED • _ DATE: t ?7SIGNATURE:ort/".70- RECToR OR AUTHOR ZED REPRESENTATIVE REVIEWING DEPARTMENT/DIVISION : flAPPROVED 'APPROVED WITH CONDITIONS NOT APPROVED DATE: `®--3d-63----) SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE REVIEWING DEPARTMENT/DIVISION : rcICY D 6V6LopriVu OAPPROVED OAPPROVED WITH CONDITIONS ONOT APPROVED DATE: SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE COMMENTS: c We have review-• this application with particular attention to those areas we have experti: n and have identified areas of probable impact or areas where addi ' •,; . is needed to properly assess this proposal. *111 = Si'r rp'o° Di. --- orized Representative Date REV IEWIN EPARTMENT/D I v .SI ON : FII& PR .VjNTlOr4 .;:j....(IZEN,I, APPROVED 0 APPROVED WITH CONDITIONS DNOT APPROVED is DATE: 69-, "? /9'�� :SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE - REVIEWING DEPARTMENT/DIVISION : A,k f El APPROVED IZI APPROVED WITH CONDITIONS 1=1 NOT APPROVED -': ' . cee n, 04frae '74- OfrL e' k /T :. T J.` • fi �5 DATE: Aaa° -her 3, I J? SIGMA ." OF DIRECTOR OR AUTHORIZED REPRESENTATIVE •- COMMENTS:, The applicant has addressed a major park concern by accommodating non-motorized traffic on the Springbrook under-crossing.. Since S.W. 16th Street will be designated as a trail route in the Trails Master • Plan it will be important that the Oakesdale Avenue S.W. /S.W. 16th Street intersection be designed to accommodate both pedestrian and bicycle traffic. Further access for the Springbrook Trail from S.W. 16th Street will need to work from both east and west directions for both pedestrians and bikes. These considerations are especially important since the Oakes- dale under-crossing has not been designed to accommodate non-motorized transportation. T . • We have reviewed this application identifiedwith areasparticular of probable impact or those areasewhere a have expertise in and have additional 'nfoi'•= ion is needed to properly assess this proposal. Ale ' 1").-- --k _____z.k._.e _:oe-Je____z___-"L-w,-- . Date Sign e of ni_Pr' ,J4' or Authorized Representative 4 • 3 I LAKE WASHING TON d' ' `\ I • t t F�APO ipt, t__ r City Of Renton ` • h. Js%+/.. R ill I ,0 . i • .-••••"\I 4,4,.'\'Nr\4\l'i4 . .et a'cil ‘1.4 01, if . C6-04 47L>ehTh i ‘ S AI. de.,'r ,,,,mos. . Nowsnolbr ,i ' ,,,,re'z , .<7.--N. -- a S.W. 9 6 t h ;S 4. 1 4 ,)r 1�A Tf `� 11 , A p. \ 1 �O�tµER- i • " m ,t+1; � pAlllllll! 'II�IlIi11N1i illlll, z �.,�e [_...,---- �P`� ,..,�n,0I llMlllllII 1: IWllllll!'x eaPov Nillllillli f2csl :,II:' ___il_ LII �, 5 O :wun1111 _ / sir IIIIIIIII �; �_--�,. ,� , , ,.«.~« •,, c:: _.• .�•.;:��®� �,��IIIII111111111IIIIIIl�IIIHIIIIIIr,— ,, -\,.. S.W. 164h ST. yUlW. Inn.I. J., ` •.,. M` III_- t=_• `f yM __,1 w i of ar,�t I I 1 ,. ,. rl at M: R-'m'vr.M1wt . ' . . • • 1 ) 1 ,! 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(REE'ER To THE EXISTING KIN4 COONTY FLOOD INSURANCE STUDY 1.-- FOR IDENTIFICATION OF ADDITIONAL FLOOD HAZARD AREAS).. ... . .... • .,..., • •-•, i : . . . .., . 6: , ,.,: „. . . 2 THE GREEN RIVER FLOOD HAZARD AREA;.DELINEATIONS.AND•ELEVATIONS ....i.•-•••*'.: .COTSIDEbEtTHEIVIMN...tElAiCit;REPRESENTiANAEYSTTC.ONDITIONS WITH LEVEE .1".. ... SYSTEMS ASSUMED REMOVED WHERE FREEBOARD IfLESS'THAN24 FEET. • ,. (REFERENCE LEVEE SYMBOL PER LEGENDt5011LEVEE SYSTEMMEti;GNATIONS). 6 i' .:•••••••'• :,1 , . ii'l'kiii:. i it:i i•i•••. •.. ,••, . ,...,../•;.•••'•• . .. . . • . : .3. • •FLOODWAY DELINEATIONS REPRESENT noNimurvli:cH,NNNEL WATER SURFACE ELEVATION:TOE'..WIDTHS REGULATORY FLOODWAY:FOR LEVEED SECTIONS -— . 7....: EXTENDS To.THE PROTECTED F0TEC: TE D TOE OF THEJ,LE (EEi...VY..,.g,.,'T•:.E•M f '..-•••,:.:.::-:!‘!\!\‘!' t••' ,1:%-1 1- 1 l k . 1 l ‘f, c. . .. . .. ; .. A. CITY 0 • .., . . . . . :,1 , • • WORK MAP FOR SHEET NO. 21 of 33 ri--I-1 Atir FLOOD INSURANCE RATE MAP & CONTRACT NO. 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'''''''-. ' '7C 4 y , I •''‘'' '4:'•'0./•'4`•e ,p,,,,,,,nr.1,•,....rr, . „.. ....v....,.. • , .... .s••,..,..,,,,.*,..;,,,,„-..„,„,..,,..,..,:„......741(*.,,,fe r' ., ..4"-'1-.7.40,,e . „10. f .— ....t -• • .1.(6f, V..-..?`51.0 . '4.,..,4.0..p...7,4.:-:,--t'.44.rq!".:'''',1'' ..4'.e ,.. e , t• g eN .. cn * - - lit It mg_ ?it.,,i TR . ..... '.-51 -- ---ig. MI' TES SW NM INT IMF rms. mar Mir , G6 ' C- TO -C OF /SE,AR/NG . ST.ANPARD /-'RECA ST, • PRESTRESSED CONC. • SL 4I3 dl//C./. A CONC; • ED' BECK SLAB AND . APPROACHITT°TL: /?T. 0 VE•RLA Y MATCH EX/3 T sLAB(TYP �/-I MT, �TVEYP)EN EACH SIDE) i - )_ 111 CAST-IN-PLACE Go' "CLEA,P k - .4 FILL Pit E w/ P/L E CAP 1 ' I l PVOOD LAGGING S7-4VcTu,eAL = ' : =P CONC. . i=3ETGt/EEN SOLD/ER . coNci2E7-E 10R/!/EN STEEL SOL DIiii; - FASCIA L L ? R _ilk-. PILES P'/FS @ 2 5'CENTERS W ��� UN�/S TU�2,BE,C� =JIIu1 SEE DETA/L(/\ __ , T Ei9/2TH �I N III I I SOLD/ER P/LE p(�' �� 2 0 � �% _�_ 'ea - �STEE•L_ RILE) 11I( .'`�- ` - � -- WALL FOOTING - _ a"C Ptak DEN LAGGING f II(, • n •ii 1 1___ r���� = , Ini. j o__ ►• C,l.P CONC. FASC/A PVICL = UN/OE,OiP,9/N HHu Eit--- 6YSTE_f SEE DETAIL - ice STRuCTU,eAL TEE 4VEWED TO . SOLO/ER P/L E FOR. V X7 LAGGING AND 0:9/JC. F,98C/A WALL. .,OETA /L (--/- TYPICAL ULTIMATE SECT/DN c • . n/TS • OAKESp4Lz OVE1CROSS/NG . NTS 24{1-1 4 z) PSF/F"T OF-• WA L h-Li i-I- 405 ROADWAY Ills=illy l!ll=llr— -- - - -- - --- - --� r :.) ((r DA'ESDAL E AVE b _ (LOOfC/NG 50UT//� s • (((/ 9 E 3 $ E P—/ CHANNEL EXCA\/ATI�N 9 ( —LJTURE) 5... s • ICJ 0 ACTIVE PRES SURE/F? SOLD/ER I #. OF' P/L E .O/,9/v/E TEFL - P/L ES T ,., • • o G W T ® 1711=tiff-a1/ } TES: _, Water pressure is not included in either active or /0O /=.6 --/F T passive pressure. 2) Active pressure v 39 psf/ft. of depth above g.w.t. 20 PSF--/F?- ` 20 psf/ft. below g.w.t. • 4> ,o 3) Passive pressure n 120 psf/ft. below g.w.t 4) Active pressure acts over one pile diameter. 5) Passive pressure acts over two pile diameters. o . ,Q 6) Actual active & passive net pressures below the excavation lines are dependent upon pile sizes, spacing , and pressures shown must be adjusted accordingly.. .__. p � 7) The pressure diagrams shown are only to be used in ' preliminary sizing and layouts. The final designs will PASSIVE P/PESSLJR.E/FT OF be based on load deflection analysis of laterally loaded piles taking into account, soil structure intersections. P/L E - D/AME 7-E ' FIGURE: _ UJ\ DERCROSSING EARTH • PRESSURE FOR PRELIMINARY DESIG:. t 1 t . Cr PRG %..--a- GG ' C-TO-C OF /3 EAR/NG . APPRO4C1/ SL/I0 — L MC REIMI • .:,.:.......;;.::F.:..... .-:.... " '' :C/P CONC. DECK SLAB OVERLAY \ . NEOPRENE" �"`"r . 0EAI NG PA I — STA/VDARD PRECAST, (;-----'--ii PK7ESTRESSEi 1 1I CONCRETE SLAB 1 i1 , II I WELDED STUD TO I I . o• L I I STRUCTURAL_ TEE 1 I • o !�//�E / /LE" 1 I A,, TEMF=RARY, T/MOER LAGG//VG 1 I e: ASSUME G/-0�FACE- TO- 17_1 'i. /ACd- of WALL .... Ao.'•0: 581 C / S LINE TO CUiC'f3 IV • • G/NE I .0.;O, I IV :. o. 'GYP TRAFFIC F34RR/ER TOP OF / 'i WV I I I •., . I . I ! AP.O. - . • I I '.o '..:' CAST /N PLACE COACRETE • /596C/A WALL I - I X .(PERMA/VE/V T STRUCTURAL ' ,� 1 iLQ !�l/.4LL) ' �—S7—RuCTU,'AL TEE !P/F.LOED I TO PIPE PILE OFTA I L. (-2- .- • NT NOTICE OF PUBLIC HEARING RENTON HEARING EXAMINER RENTON,WASHINGTON A PUBLIC HEARING WILL BE HELD BY THE RENTON HEARING EXAMINER AT HIS REGULAR MEETING IN THE COUN- AFFIDAVIT OF PUBLICATION CIL CHAMBERS ON THE SECOND FLOOR OF CITY HALL, RENTON,WASH- INGTON, ON JANUARY 5, 1988, AT 9:00 A.M. TO CONSIDER THE FOLLOWING Audrey Benner ,being first duly sworn on oath states PETITIONS: that he/she is the Chief Clerk of the CITY OF RENTON PUBLIC WORKS dtPARTMENT (OAKSDALE AVE.) Appli- 4ation for special permit for fill and grade to remove 5000 cubic yards to construct a VALLEY DAILY NEWS roadway tunnel under 1-405. Application for Substantial shoreline permit for construc- • Kent Edition • Renton Edition • Auburn Edition ton along Springbrook Creek. Property located from S.W. Grady Way to S.W. 16th Daily newspapers published six (6) times a week.That said newspapers Street. File Nos. ECF-083-87, SP-099-87, legal newspapers and are now and have been for more than six $M-011-87. are Legal description of the files noted months prior to the date of publication referred to,printed and published •ab.Qve are on file in the Renton Building Zoning Dep in the English language continually as daily newspapers in Kent, King a ALL INTERESTEDnt.PERSONS TO SAID County,Washington.The Valley Daily News has been approved as a legal 'ITIONS ARE INVITED TO BE PRE- newspaper by order of the Superior Court of the State of Washington for SENT AT THE PUBLIC HEARING ON JAN- King County. THEu/ilN R OPINIONS.9 00 A.M.TO EXPRESS �'ublished in the Valley Daily News The notice in the exact form attached,was published in the Kent Edition amber 25, 1987 R2696. , Renton Edition X , Auburn Edition , (and not in supplement form) which was regularly distributed to its subscribers during the below stated period.The annexed notice a Notice of Public nearing was published on December 26 , 1987 R2696 The full amount of the fee charged for said foregoing publication is the sum of $ 22 .40 Subscribed and sworn to before m is 5 to day of January 143 S Notar ublic for the State of Washington, residing at Federal Way, King County, Washington. O� RENTON VDN#87 Revised 11/86 CITY (`r 1� ' tom-' u BUILD." 3 / ZONING DEPT. �_ I ��$STArg o� JOSEPH R. BLUM . • • • Director `4"1;eee kt°- STATE OF WASHINGTON DEPARTMENT OF FISHERIES . 115 General Administration Building • Olympia, Washington 98504 • (206) 753-6600 • (SCAN) 234-6600 r December 21, 1987 r� r ; �1 \,� i% i �� I. _i Mr. Donald K. Erickson �.1,,- ; r City of Renton L A:a z--$ r`; ; -e,: a; , Building and Zoning Department 200 Mill Ave. South Renton, WA 98055 Dear Mr. Erickson: Determination of Non-Significance for Oaksdale Ave. S.W., File Numbers SP-099-87, CU-101-87, SM-011-87 Springbrook Cr., Tributary to Green R., WRIA 09.0005 • The above-referenced document sent to us for review is incomplete, thus it is very difficult to determine how extensive the impacts to Springbrook Creek will be. The Determination of Non-Significance (DNS) indicates that a small swale and/or biofilter will be constructed to receive the runoff from the roadway and directs the reader to attached information. Unfortunately, there were no attachments to our copy. In any event, a small swale will not be adequate and if flood waters inundate the swale during normal annual events it will not function as a biofilter. Additionally, the DNS does not address the impacts the • proposed concrete wall will have on the future Springbrook Creek channel, nor does it provide mitigation for loss of habitat. These items should be addressed before the environmental documentation for this proposal is finalized. • Recently we have met with the your engineers concerning the problem of • stormwater runoff as well as the ultimate construction of the new Springbrook Creek through this area. After reviewing several options, it was determined that if the City of Renton would commit to a proposal that would improve the overall quality of Springbrook Creek within the city limits of Renton, the Department of Fisheries would reduce the level of biofilter required for this project. The implementation of this proposal must be accomplished at the same time as construction. We wish to emphasize that a Hydraulic Project Approval will be required • prior to construction of an outfall or other work within the ordinary high water line of the Springbrook Creek or its tributaries. • • ` « 1 Donald K. Erickson December 21, 1987 Page 2 Thank you for the opportunity to review this proposal. If you have any questions concerning our comments, please contact me at 753-2980. Sincerely, 'seph L. bel, Habitat Manager Habitat Management Division JLR:db cc: SEPA File OF Re+ 4 i, � . rf. „ i‘icijiTicE U 6 © �Z op$ umiL Pam$ .911f0 SEPZEMO� City of Renton Land Use Hearing Examiner will hold a PUBLIC HEARING in CITY COUNCIL CHAMBERS , CITY HALL ON .JANUARY 5, 1988 BEGINNING AT 9:00 A.M. P.M. CONCERNING: •ECF-083-37, SP- 0 -g1, ', CITY OF RENTON PUBLIC HARKS DEPARTET1 COAKESDALE AVE.) ' 'P ICATION FOR SPECIAL PERMIT FOR. FILL AND GRADE- TO.R MQVE III CUBIC YARDS TO CONTRUCT A. ROADWAY TUNNEL UNDER — •1 ,.. • • • APPLICATION FOR SU STANTI.AL SHORELINE PERMIT FOR CONSTRUCTION ALONG SPRINGBROOK LREEK. v •�• •enr ="' ' , _� e • i f It 'i 4,M ti • r .. ..11‘,,-..4'; ..1.\• 1 •\ •,' , . :.;:t ..%/ ‘ 0 : .... .,t ,.. i if'4,... ;,kk \.e.t...1.ti . • :0 A /1 .1..t. % . ' .C• .r....i t v , 1 i• 1,../ "• 1' nrf{9,,,'h) V ' 4 ts .• ', ram ' %\tic.,,.‘,.'.i.:.....,,.„,.:....:i:,......it.c.„:.,1,.0%‘,..1.:, Is_Of'"...(N.;..4..;' li,.....:....•:••!...: ';....',i::..„,,,.'-'••1:;.!•- •::....7 II.., . ....A.x. ....at4.41).....:7:11:. , :1::. •11777"'.."7-•fill......-•!.....• :: .7'4.; • L !;ti w y1 �tt ja, � 1• y -,......1 y..r, T��It �4 1•''t �• :R �.�� ,• q, ,lam. ,� c ( I ' Afg . .• J I �" -. 't ,- y'� 114, 1+ e to • �.\, OM 4 I ZON, • t , '• fl l'i 1• . . '. .•• .11‘(.3.;;E;i:.r.-;:i' 1k't:11'...44 ••• •tS•0.7V. :A •t). .4111: '§k, 0 I I ' * ' ; r t 1a t!I tt • .t. • . i.YZ .•.,.' LNi� t I r:%.,:.n»' � tJ . � b ..t644t - S ., ,....,, .• , 4 Tehrrh9y: . 4- I - R g03M4 id L. GE 't1 I.O.CATION• c, A Dtt R• ADOR S. FROM S.W. GRADY UAY TQ S.tat. l6TH STREET. FOR FURTHER INFORMATION CALL THE CITY OF RENTON BUILDING&ZONING DEPARTMENT 235.2550 THIS NOTICE 11OT TO BE REMOVED WITHOUT ; .4. ;- PF ''ER AUTHORIZATION 10 t$ V:10,° CITY OF RENTON BUILDING & ZONING DEPARTMENT Barbara Y. Shinpoch, Mayor Ronald G. Nelson, Director December 11, 1987 • Robert Bergstrom Engineering Supervisor City of .Renton Public Works Department 200 Mill Avenue South Renton, WA 98055 Dear Mr. Bergstrom: Subject: Environmental Review Committee Decision on Reconsider- ation of Mitigation Measures for Oakesdale Ave. S.W. , File Nos. ECF-083-87, SP-099-87, CU-101-87, SM-011-87 Dear Mr. Bergstrom: Enclosed please find a copy of the Finalized Mitigation Measures from the Environmental Review Committee's threshold determination of the above referenced project. Since your application has already gone through the 15 day comment period, these mitigation measures are construed as final. The fourteen day appeal period will commence December 14, 1987. If you have any questions, please call. Sincerely, Donald K. ERickson, AICP Zoning Administrator Enclosure DKE:cb 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2540 OF I iV isv 4$ .0 ° BUILDING & ZONING DEPARTMENT - o RONALD G. NELSON - DIRECTOR 9 �$.3.) MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055 • 235-2540 0,9gT�D SEP'�EM��P BARBARA Y. SHINPOCH MAYOR December 11, 1987 Mr. Clyde Slemmer Project Development Engineer Department of Transportation Olympia, WA 98504 RE: Determination of Non-Significance Issued for City of Renton Oakesdale Ave S.W. , files SP-099-87, CU-101-87, SM-011-87. Dear Mr. Slemmer: Attached please find the Environmental Review Committee's Determination on the City of Renton Oakesdale Ave S.W.project. We have extended the comment period on the project in order to receive your ,,comments. Your comments need to be received by our office no later than 12 : 00p.m. on December 22, 1987. If you have any questions, please call myself or Jeanette Samek-McKague at 235-2550. Sincerely, • Kld�t.a e'a� 711. Donald K. Erickson, AICP Zoning Administrator &11H CITY OF RENTON ' BUILDING & ZONING DEPARTMENT Barbara Y. Shinpoch, Mayor Ronald G. Nelson, Director December 11, 1987 Bradley Morgan Muckleshoot Tribal Council 39015 172nd Avenue S.E. Auburn, WA 98002 • RE: Determination of Non-Significance Issued for City of Renton Oakesdale Ave S.W. , files SP-099-87, CU-101-87, SM-011-87. Dear Mr. Morgan: Attached please find the Environmental Review Committee's Determination on the City of Menton Oakesdale Ave S.W.project. We have extended the comment period on the project in order to receive your comments. Your comments need to be received by our office no later than 12 : 00p.m. on December 22, 1987. If you have any questions, please call* myself or Jeanette Samek-McKague at 235-2550.C-7 merely, '� 1 ti Donald K. Erickson, AICP Zoning Administrator 1 200 Mill.Avenue South - Renton, Washington 98055 - (206) 235-2540 11 t$ , ► CITY OF RENTON IMES BUILDING & ZONING DEPARTMENT Barbara Y. Shinpoch, Mayor Ronald G. Nelson, Director • December 11, 1987 Mr. Joe Robels Habitat Management Division Rm 115 MS AX-11 Olympia, Washington 98504 RE: Determination of Non-Significance Issued for City of Renton Oakesdale Ave S.W. , files SP-099-87, CU-101-87, SM-011-87. Dear Mr. Robels: Attached please find the Environmental Review Committee' s Determination on the City of Renton Oakesdale Ave S.W.project. We have extended the comment period on the project in order to receive your comments. Your comments need to be received by our office no later than 12 : 00p.m. on December 22 , 1987. If you have any questions, please call myself or Jeanette Samek-McKague at 235-2550. - S3`�rcerely, Donald K. Erickson, AICP Zoning Administrator 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2540 sTnrE €?° ANDREA BEATTY RINIKER cN'ii; _ Director • y"1 1889 a°y CITY OF RENTON STATE OF WASHINGTON [ © C II V E DEPARTMENT OF ECOLOGY D^ 9g/ Sto -11 • Olympia, Washington 98504-8711 • (206) 459-6000 BUILDING / ZONING DEPT, December 7 , 1987 Environmental Review Committee City of Renton 200 Mill Avenue South Renton, WA 98055 Dear Sirs : Thank you for the opportunity to comment on the determination of nonsignificance for the removal of 5 , 000 cubic yards of material to construct Oakesdale Avenue SW (ECF-083-87) . We reviewed the environmental checklist and have the following comments . As noted in the checklist, a shoreline permit will be re- quired for this project . The proposed project must comply with the goals and standards of the local shoreline master program. Our Northwest Regional Office is concerned about the proposed dewatering aspects of the tunnel and would like to obtain ad- ditional information on this phase. Please contact Ms . Krystyna Kowalik of the Northwest Office at (206) 867-7038 to discuss this project. If you have any questions, please call Ms . Terra Prodan of the Shorelands Program at (206) 459-6789. Sincerely, Barbara J. itchie Environmental Review Section BJR: cc: Linda Rankin, Shorelands Marlene Wylie, NWRO ckIZE>3 LJ Q CITY OF RENTON "LL PUBLIC WORKS DEPARTMENT Barbara Y. Shinpoch, Mayor Richard C. Houghton, Director C'1' Or' RENTON C 0 MEMORANDUM r U CEO 0419yy December 3, 1987 TO: Donald K. En.ichdon FROM: Richard Houghton, Pubt.ie. (Vonhz D.iAec.on SUBJECT: De te./unina t on of Non-S.i gn dicance 0akeadaEe - S.W. Gi ady Way to S.W. 16th. Sticee t • The. Pub.2ic Wonhi Department dtai4 reviewed the cond-i tLon6 .cmpo4ed by the DNS 4on the above nebenenced project. We. nequezt that the ERC necon6.iden .c is action negandt.ng condition No. 4 and delete .i t 6nom the. DNS. The. nea4on .ins that th .6 £Lini is .ups in our negotc.a ti.on6 with the. F.%6he Leis which Ls condition No. 2. Az you- are aware, a penm.i t must be obtained bnom F.vsher i..ees a.6 wete.. 4,9. *Lcied&-,A, RCH:pmp 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2569 • ®$ }` CITY OF RENTON BUILDING & ZONING DEPARTMENT Barbara Y. Shinpoch, Mayor Ronald G. Nelson, Director • November 23, 1987 • • Robert Bergstrom Engineering Supervisor City of Renton Public Works Department 200 Mill Avenue South Renton, WA 98055 Dear Mr. Bergstrom: Transmitted herewith are copies of the Determination of Non- Significance (Mitigated) and the Mitigation Measures for Oakesdale Ave. S.W. , file nos. ECF-083-87, SP-099-87, CU-101- 87, SM-011-87. If you have any questions, please call 235-2550. nc e Donald K. Erickson, AICP Zoning Administrator Enclosures DE:cs 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2540 • .'se • CITY OF RENTON BUILDING & ZONING DEPARTMENT Barbara Y. Shingoch, Mayor Ronald G. Nelson, Director • November 23, . 1987 0 j • Mr. Gerald W. Marbett Building and Land Dev. Div. 450 King County Admin. Bldg. Seattle, WA 98104 Dear Mr. Marbett:, Transmitted herewith are copies of the Determination of Non- Significance (Mitigated) and the Mitigation Measures for Oakesdale Ave. S.W. , file nos. ECF-083-87, SP-099-87, . CU-101- 87, SM-011-87. • If you have any questions, please call 235-2550. Sincerely, 7a4yits Donald K. Erickson, AICP - Zoning Administrator Enclosures DE:cs 1 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2540 ' a✓ ' -..0;. CITY OF RENTON eel ti BUILDING & ZONING DEPARTMENT Barbara Y. Shinpoch, Mayor • Ronald G. Nelson, Director November 23, 1987 Washington State Dept. of Ecology Environmental Review Section ' Mail Stop PV-11 - Olympia, WA 98504 Gentlemen: Transmitted herewith are copies of the Determination of Non- Significance (Mitigated) and the Mitigation Measures for Oakesdale Ave. S.W. , file nos. ECF-083-87, SP-099-87, CU-101- 87, SM-011-87. If you have any questions, please call 235-2550. Sincerely, cm.d.dr, Donald K. Erickson, AICP Zoning Administrator Enclosures DE:cs 200 Mill Avenue South - Renton, Washington 98055 - (206) 235-2540 RENTGrd BUILDING & ZONING DEPA61 IDEPAII 141ENT DEVELOPMENT APPLICATION REVIEW SHEET ECF -0o� -o 1 APPLICATION NO(S) : 3p'-pqq-S7J CLi 101 87, 5n " 01 ( 61 PROPONENT : Ii`( C 1Z. LION PROJECT TITLE : Q v��, )Nur Nue. S low) pRol, U BRIEF DESCRIPTION OF PROJECT: LOCATION : TO : n PUBLIC WORKS DEPARTMENT SCHEDULED ERC DATE : ENGINEERING DIVISION TRAFFIC ENG. DIVISION SCHEDULED HEARING DATE : n UTILITIES ENG . DIVISION El FIRE PREVENTION BUREAU .0 PARKS & RECREATION DEPARTMENT BUILDING & ZONING DEPARTMENT ' POLICE DEPARTMENT Ei POLICY DEVELOPMENT DEPARTMENT n OTHERS : COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING , PLEASE PROVIDE COMMENTS TO THE BUILDING & ZONING DEPARTMENT BY 5 : 00 P .M. ON REVIEWING DEPARTMENT/DIVISION : Z0/011(06 ,D1UkS1OI El APPROVED APPROVED WITH CONDITIONS I INOT APPROVED ` 1 R I % {eu 6-5-1 Po ag 1I c -I og 5-v -1 31--owi E U0`.3°36 1)(d) 10-V6 tiwo5gotoo N.Looz dr v_r .D' 1 K — This Mom' 34rtrJj cisr1 / �dv 1Ik6 ?PITH vlo 9 cOft\)1 L 51100 ► E; ps 'pet - Pcw sepaDk) i Mil., (1•6- 3P te< We 5HtouUO 6 e oP ). JeAAJJ>JI1/1-4 // /9�67 DATE : SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE REVISION 5/1982 Form 182 _ Orr r r! vl 2149N ENVIRONMENTAL CHECKLIST REVIEW SHEET r" '; kl REVIEWING DEPARTMENT: U..i GY dE`OP AttiO ai 1 9bif P0L1�y DATE CIRCULATED: [ b��(c� I - ? COMMENTS DUE: (����I.9Y, ) I•,`' �4r' RENT EFC - 083 87 APPLICATION NO(S). : SP 099-87, SM 011-87. OCT 2 7 1987 PROPONENT: CITY OF RENTON PUBLIC WORKS DEPARTMENT ' t C I Q PROJECT TITLE: OAKESDALE AV SW FROM GRADY WAY TO SW 16th ST BRIEF DESCRIPTION OF, PROJECT: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION FOR SUBSTANTIAL SHORELINE PERMIT FOR -CONSTRUCTION .ALONG SPRINGBROOK CREEK LOCATION: FROM SW'.GRADY WAY TO SW 16th ST • SITE AREA: 1.86 ACRES BUILDING AREA (gross): IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS PROBABLE PROBABLE ' MORE MINOR MAJOR INFORMATION IMPACT IMPACT NECESSARY 1) Earth 2) Air 3) Water 4) Plants 5) Animals 6) Energy and Natural Resources 7) Environmental Health 8) Land and Shoreline Use 9) Housing 10) Aesthetics 11) Light and Glare 12) . Recreation 13) Historic and Cultural Preservation 14) Transportation 15) Public Services, 16) Utilities COMMENTS: 1 . 1\10 144,c_ ,t We have review- • this application with particular attention to those areas we have experti:;n and have identified areas of probable impact or areas where addi' ' 84 401P"r is needed to properly assess this proposal. if . , Siena re • Dire t r or orized Representative Date RENT BUILDING & ZONING DEN --MENT - DEVELOPMENT APPLICATION REVIEW SHEET ECF - 083-87- APPLICATION WAS) ; SP 099-87, SM 011-87 • PROPONENT; CITY OF RENTON PUBLIC WORKS DEPARTMENT • PROJECT TITLE; OAKESDALE AV SW• FROM GRADY WAY TO SW 16,th ST BRIEF DESCRIPTION OF •PROJECT; APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION FOR• SUBSTANTIAL SHOREMNE PERMIT• FOR CONSTRUCTION ALONG SPRINGBROOK CREEK LOCATION ; FR(1M 5W ARMY WAY Td SW 1A+14'.• ST TO: t: i PUBLIC WORKS DEPARTMENT SCHEDULED ERC DATE : ENGINEERING DIVISION TRAFFIC ENG, DIVISION SCHEDULED. HEARING DATE : • FAUTILITIES ENG, DIVISION OFIRE PREVENTION BUREAU El PARKS & RECREATION DEPARTMENT II .BUILDG & ZONING DEPARTMENT ❑ POLICE DEPARTMENT POLICY DEVELOPMENT DEPARTMENT OTHERS : COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING, PLEASE PROVIDE COMMENTS TO THE BUILDING & ZONING DEPARTMENT BY 5:00 P ,M, ON REVIEWING DEPARTMENT/DIVISION : rCiC D� Lopm�"'/ APPROVED Ei APPROVED WITH CONDITIONS EjNOT APPROVED DATE: SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE REVISION 5/1982 Form 182 2149N •ENVIRONMENTAL CHECKLIST REVIEW SHEET REVIEWING DEPARTMENT: Td tt r DATE CIRCULATED: () ()ec�,P� Z7/ /92'7 COMMENTS DUE:LJ4 V 3, i c ? 7 EFC - 083 87 APPLICATION NO(S). : SP 099-87, SM 011-87. ` PROPONENT: CITY OF RENTON PUBLIC WORKS DEPARTMENT • PROJECT TITLE: OAKESDALE AV SW FROM GRADY WAY TO SW 16th ST BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION FOR SUBSTANTIAL SHORELINE PERMIT FOR•CONSTRUCTION ALONG SPRINGBROOK CREEK LOCATION: FROM SW GRADY WAY TO SW 16th ST SITE AREA: 1.86 ACRES BUILDING AREA (gross): 'y IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS PROBABLE PROBABLE MORE MINOR MAJOR INFORMATION IMPACT IMPACT NECESSARY 1) Earth 2) Air 3) Water 4) Plants 5) Animals 6) Energy and Natural Resources 7) Environmental Health 8) Land and Shoreline Use 9) Housing q 10) Aesthetics 11) Light and Glare 12) Recreation 13) Historic and Cultural Preservation 14) Transportation 15) Public Services 16) Utilities COMMENTS: ,1 A - o t,- _,ems !"' We have reviewed this application with particular attention to those areas we have expertise in and have identified areas of probable impact or areas where additional information .s needed to properly assess this proposal. . .7/e /0--- e--02 Signature of Director or Authorized Representative Date RENTI BUILDING & ZONING ®EPA' MENT DEVELOPMENT APPLICATION REVIEW SHEET ECF 083-87- . TAPPLICATION NO(S) . SP 099-87, SM 011-87 . PROPONENT; CITY OF RENTON PUBLIC WORKS DEPARTMENT • . PROJECT TITLE ; OAKESDALE AV SW. FROM GRADY WAY TO SW .16.th ST BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION FOR. SUBSTANTIAL SHORE .LINE PERMITS FOR: CONSTRUCTION ALONG SPRINGBROOK CREEK LOCATION : T TO: El PUBLIC WORKS DEPARTMENT SCHEDULED' ERC DATE : El ENGINEERING DIVISION ® TRAFFIC ENG. DIVISION SCHEDULED. HEARING DATE ; ® UTILITIES ENG. DIVISION fl FIRE PREVENTION BUREAU 0 PARKS & RECREATION DEPARTMENT E .BUILDING & ZONING DEPARTMENT . lePOLICE DEPARTMENT POLICY DEVELOPMENT DEPARTMENT ® OTHERS ; COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING . PLEASE PROVIDE COMMENTS TO THE BUILDING & ZONING DEPARTMENT BY 5:00 P .M. ON REVIEWING DEPARTMENT/DIV,ISION ; . 1I APPROVED 'APPROVED WITH CONDITIONS NOT APPROVED • • DATE. ` °-"--) . SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE { REVISION 5/1982 Form 182 2149N ENVIRONMENTAL CHECKLIST REVIEW SHEET 171-7 7 C';? Hu:iN Qi\J • REVIEWING DEPARTMENT: �r j ' , 1 `; t ! R l f h DATE CIRCULATED: , ( Qy=w ?-7 / 9 g 7 COMMENTS DUE' A.JA6),0 11(1I ,CPL) EFC - 083 87 I'VV • APPLICATION NO(S). : SP 099-87, SM 011-87. PROPONENT: CITY OF RENTON PUBLIC WORKS DEPARTMENT " PROJECT TITLE: • OAKESDALE AV SW FROM 'GRADY WAY TO SW 16th ST • • BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPIECIAL_ PERMIT FOR F TLL AND GRADE TO REMOVE . 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION' FOR SUBSTANTIAL SHORELINE PERMIT FORCONSTRUCTION .ALONG SPRINGBROOK CREEK LOCATION: FROM SW.•GRADY WAY TO SW 16th ST SITE AREA: 1.86 ACRES BUILDING AREA (gross): IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS PROBABLE PROBABLE MORE MINOR MAJOR INFORMATION IMPACT IMPACT NECESSARY 1) Earth . . 2) Air 3) Water • 4) Plants 5) Animals 6) Energy and Natural Resources 7) Environmental Health 8) Land and Shoreline Use 9) Housing 10) Aesthetics • • 11) Light and Glare • 12) Recreation 13) Historic and Cultural Preservation 14) Transportation • • 15) Public Services • 16) Utilities COMMENTS:, . The applicant has addressed a major park concern by accommodating non-motorized traffic on the Springbrook under-crossing... Since S.W. 16th Street will be designated as a trail route in the Trails Master Plan it winbe important that the Oakesdale Avenue S.W. /S.W. 16th Street intersection be designed to accommodate both pedestrian and bicycle traffic. Further access for the Springbrook Trail from S.W. 16th Street will need to work from both east and west directions for both pedestrians and bikes. These considerations are especially important since the Oakes- dale under-crossing has not been designed to accommodate non-motorized transportation. • • • We have reviewed this application with particular attention to those areas we have expertise in and have identified areas of probable impact or areas where additional 'nfo ion is needed to properly assess this proposal. Sign e of Director or Authorized Representative Date RENT( BUILDING & ZONING DEPA MENT . n . DEVELOPMENT APPLICATION REVIEW SHEET . ECF - 083-87- . .APPL I CAT ION NO'(S) :. SP 099-87, SM 011-87 • PROPONENT ; CITY OF RENTON PUBLIC WORKS DEPARTMENT . . . PROJECT TITLE; OAKESDALE AV SW FROM GRADY WAY TO SW 16.th ST BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL. PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY- TUNNEL UNDER I-405: APPLICATION FOR. SUBSTANTIAL SHORELINE PERMIT. FOR CONSTRUCTION ALONG SPRINGBROOK CREEK ' . LOCATION : FRnM S Al GRAN war iit sw .W- ST T0; El PUBLIC WORKS DEPARTMENT SCHEDULED ERC DATE : El ENGINEERING DIVISION ® TRAFFIC ENG. DIVISION SCHEDULED. HEARING DATE : f. .:. IJUTILITIES ENG . DIVISION El FIRE PREVENTION BUREAU ly1PARKS & RECREATION DEPARTMENT h ® BUILDING & ZONING DEPARTMENT ®.POLICE DEPARTMENT 0 POLICY DEVELOPMENT DEPARTMENT IIOTHERS : COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED " '. IN WRITING. PLEASE PROVIDE COMMENTS TO THE BUILDING & ZONING DEPARTMENT BY 5:00 P .M. ON REVIEWING DEPARTMENT/DIVISION : /9a,-k l 0 APPROVED [2:1APPROVED WITH CONDITIONS 0 NOT APPROVED cee Co 74- OW- C--, '&& Xr77--- �/ j DATE; �'40 6' 4� 3, CZV SIGNA • '�; OF 'DIRECTOR OR AUTHORIZED REPRESENTATIVE • REVISION 5/1982 Form 182 CITY OP RENTON 2149N ENVIRONMENTAL CHECKLIST REVIEW SHEE ,. °' , �� • REVIEWING DEPARTMENT: BL,Da IL DATE CIRCULATED: QC_Tha(3 c-.4.. 2 7 19 07 COMMENTS DUE: GUI !/ I cis? •_ / • EFC - 083 87 L ;LUa,.L,� ,,✓,.� APPLICATION NO(S). : SP 099-87, SM 011-87. PROPONENT: CITY OF RENTON PUBLIC WORKS DEPARTMENT " PROJECT TITLE: . OAKESDALE AV SW FROM GRADY WAY TO SW 16th ST BRIEF DESCRIPTION OF' PROJECT: APPLICATION FOR' SPECIAL PERMIT FOR FILL AND- GRADE TO REMOVE . 5000 CU YARDS TO CONSTRUCT A ROADWAY. TUNNEL UNDER I-405: APPLICATION' FOR SUBSTANTIAL SHORELINE PERMIT FORONSTRUCTION .ALONG SPRINGBROOK CREEK LOCATION: FROM SW GRADY WAY TO SW 16th ST . SITE AREA: 1.86 ACRES BUILDING AREA (gross): IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS PROBABLE PROBABLE MORE MINOR MAJOR INFORMATION IMPACT IMPACT NECESSARY 1) Earth . . 2) Air • 3) Water • 4) Plants - 5) Animals 6) Energy and Natural Resources 7) Environmental Health 8) Land and Shoreline Use 9) Housing • 10) Aesthetics 11) Light and Glare 12) Recreation 13) Historic and Cultural Preservation 14) Transportation ' 15) Public Services • 16) Utilities • COMMENTS: We have reviewed this application with particular attention to those areas we have expertise n and have identified areas of probable impact' or areas where additiona in' f imation is ne ed to properly assess this proposal. Si e of Director or Authorized Representative Date REN1 I BUILDING &e ZONING DEP/ 'irMENT DEVELOPMENT APPLICATION REVIEW SHEET ECF - 083-87- ,•APPLICATION KO) : SP 099-87, SM 011-87 • PROPONENT; CITY OF RENTON PUBLIC WORKS DEPARTMENT PROJECT TITLE ; OAKESDALE AV SW. FROM GRADY WAY TO .SW 16.th ST BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION FOR. SUBSTANTIAL SHORELINE PERMIT. FOR CONSTRUCTION ALONG SPRINGBROOK CREEK ' LOCATION : —_-FRnM CW ( PI tY WIY TR 511 tEdJ4 ST TO: El PUBLIC WORKS DEPARTMENT SCHEDULED ERC DATE : ENGINEERING DIVISION ®TRAFFIC ENG, DIVISION SCHEDULED. HEARING DATE : flUTILI-rIES ENG . DIVISION El FIRE PREVENTION BUREAU IPARKS & RECREATION DEPARTMENT CEPBUILDING & ZONING DEPARTMENT • POLICE DEPARTMENT ® POLICY DEVELOPMENT DEPARTMENT ® OTHERS : COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING . PLEASE PROVIDE COMMENTS TO THE BUILDING & ZONING DEPARTMENT BY 5:00 P .M. ON REVIEWING DEPARTMENT/DIVISION : ( G RAPPROVED Ei APPROVED WITH CONDITIONS El NOT APPROVED • DATE: )7 ?-j) fi. SIGNATURE RECTOR OR AUTHOR ZED REPRESENTATIVE aM1 ii ;'. REVISION 5/1982 4 Form 182. Cit; CT? RENTON Z149, T MENTAL CHECKLIST REVIEW SHEET ' TirzF.,: ::a; =;1 ! r 1 REVI kING DERA 1'MEN%lti . i ee • i.. DATE CIRCULATED: r Ce;E 7, 7J / q�7 COMMENTS DUE: /� V 3r lGi F7 EFC - 083 - 87 • [ems -2;: , � APPLICATION NO(S). : SP 099-87, SM 011-87. pr^IF A^F PROPONENT: CITY OF RENTON PUBLIC WORKS DEPARTMENT PROJECT TITLE: OAKESDALE AV SW FROM 'GRADY WAY TO SW' 16th' ST • • BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION' FOR SUBSTANTIAL SHORELINE PERMIT FOR -CONSTRUCTION' ALONG SPRINGBROOK CREEK LOCATION: FROM'SWGRADY WAY TO SW 16th ST • SITE AREA: 1.86 ACRES BUILDING AREA (gross): IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS PROBABLE PROBABLE . • MORE MINOR MAJOR ; INFORMATION IMPACT IMPACT NECESSARY 1) Earth . 2) Air 3) Water • 4) Plants 5) Animals 6) Energy and Natural;Resources 7) Environmental Health 8) Land and Shoreline Use 9) Housing 10) Aesthetics 11) Light and Glare • 12) Recreation 13) Historic and Cultural Preservation / 14) TransportationZ , • 15) Public Services • • • 16) Utilities COMMENTS: • . We have reviewed this application with particular attention to those areas we have expertise in and have identified areas of probable impact or areas where additional information is needed to properly assess this proposal. 1_444.de-- --- vg' /?"7 - - Signature of Director or Authorized Representative Date • RENT BUILDING & ZONING DEPA" VENT ,, • DEVELOPMENT ;APPLICATION REVIEW SHEET ECF - 083-87- .-APPL I CATI ON NO'(S) : SP 099-87, SM 011-87 . PROPONENT: CITY OF RENTON PUBLIC WORKS DEPARTMENT • PROJECT TITLE ; OAKESDALE AV SW. FROM GRADY WAY TO SW 16.th ST • BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER 1-405: APPLICATION FOR• SUBSTANTIAL SHORE".LINE PERMIT, FOR. CONSTRUCTION ALONG SPRINGBROOK CREEK LOCATION : FknM SILL arum iu v To Sw 1 +W.- ST,, T0: • PUBLIC WORKS DEPARTMENT SCHEDULED ERC DATE : ENGINEERING DIVISION El TRAFFIC ENG, DIVISION SCHEDULED. HEARING DATE : jJ• EJUTILITIES ENG, DIVISION FIRE PREVENTION BUREAU PARKS & RECREATION DEPARTMENT ® BUILDING & ZONING DEPARTMENT • ❑.POLICE DEPARTMENT Ei POLICY DEVELOPMENT DEPARTMENT OTHERS : COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING, PLEASE PROVIDE COMMENTS TO THE BUILDING & ZONING DEPARTMENT BY 5:00 P .M. ON REVIEWIN EPARTMENT/DIVISION : FIf . P 10t1.I not\I k .AL APPROVED ❑ APPROVED WITH CONDITIONS El NOT APPROVED i4(45 a DATE: _SIGNATURE OF DIRECTOR OR AUTHORIZED REPRESENTATIVE REVISION 5/1982 Form 182 42149N ENV ONME TAL CHECKLIST REVIEW SHEET REVIEWING DEPARTMENT: . DATE CIRCULATED: /6 Z 7— S 7 COMMENTS DUE: f/ -3 -41 7 EFC - 083 ._ 87 APPLICATION NO(S). : SP 099-87, SM 011-87. PROPONENT: CITY OF RENTON PUBLIC WORKS DEPARTMENT PROJECT TITLE: OAKESDALE AV SW FROM GRADY WAY TO SW 16th- ST BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL_ PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION FOR SUBSTANTIAL SHORELINE PERMIT FOR -CONSTRUCTION .ALONG SPRINGBROOK CREEK LOCATION: FROM SW.GRADY WAY TO SW 16th ST SITE AREA: 1.86 ACRES BUILDING AREA (gross): IMPACT REVIEW ON ENVIRONMENTAL ELEMENTS PROBABLE PROBABLE • MORE N MINOR MAJOR INFORMATION IMPACT IMPACT NECESSARY 1) Earth 2) Air 3) Water 4) Plants 5) Animals 6) Energy and Natural Resources (/ /) 7) Environmental Health 8) Land and Shoreline Use 9) Housing 10) Aesthetics 11) Light and Glare 12) Recreation 13) Historic and Cultural Preservation / 14) Transportation 15) Public Services . 16) Utilities COMMENTS: Fol-', rY...1' VI 11. ri, W. ®Ur 2 11 0 A We have reviewed this application with particular attention to those areas we have expertise in and hav- identified areas of probable im0pact or areas where a,g�...' 1 �,ation is v eeded to properly assess this propo 1. ,_.vir Signature of Dire ,1r or Authorized Representative Date RENT BUILDING & ZONING DEPI'--MENT - DEVELOPMENT APPLUCAT8 !F N REVIEW SHEET ECF - 083-87- APPLICATION NO(S) : SP 099-87, SM 011-87 • PROPONENT :. CITY OF RENTON PUBLIC WORKS DEPARTMENT • • PROJECT TITLE : OAKESDALE AV SW FROM GRADY WAY TO SW 16.th ST BRIEF DESCRIPTION OF PROJECT: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO REMOVE 5000 CU YARDS TO CONSTRUCT A ROADWAY TUNNEL UNDER I-405: APPLICATION FOR• SUBSTANTIAL SHORE-.LINE PERMIT FOR CONSTRUCTION ALONG SPRINGBROOK CREEK LOCATION : FR(1Nl SW (;RAIN WAY T(L 'clAl 1 Atl4'- ST TO: PUBLIC WORKS DEPARTMENT SCHEDULED ERC DATE : [' ENGINEERING DIVISION ElITRAFFIC ENG , DIVISION SCHEDULED. HEARING DATE : TjUTILITIES ENG , DIVISION LI FIRE PREVENTION BUREAU LI PARKS & RECREATION DEPARTMENT LI BUILDING & ZONING DEPARTMENT ®.POLICE DEPARTMENT [' POLICY DEVELOPMENT DEPARTMENT LI OTHERS : COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING , PLEASE PROVIDE COMMENTS TO THE BUILDING & ZONING DEPARTMENT BY 5:00 P .M. ON REVIEWING DEPARTMENT/DIVISION : PA.0 11 APPROVED ® APPROVED WITH CONDITIONS LI NOT APPROVED cr1:7 cr;nrityri-,ir,-, v:7-::::3u ‘.; ikil v- tl , L-,A oci-27t1 GUmLOiC IGI� , . ' riit, ,..., NG-D .P1'. 4--- '� � DATE: ad1:7161/Vd4-* SIGNATURE OF DIREC 40 OR AUTHORIZED REPRESENTATIVE REVISION 5/1982 ' Form 182 Air 1110 CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ENVIRONMENTAL CHECKLIST NO. : ECF-083-87 APPLICATION NO(S) . : SP-099-87, CU-101-87, SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of .material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. PROPONENT: Public Works Department LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24, T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. LEAD AGENCY: City of Renton, Building and Zoning Department. The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43 .21C. 030 (2) (c) . This decision was made after review of an expanded environmental checklist and preliminary site plan, on file with the lead agency. Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4- 2822 (D) Renton Municipal Code (see attached sheet) . These conditions are necessary to mitigate environmental impacts identified during the environmental review process. This DNS is issued under WAC 197-11-340. The lead agency will not act on this proposal for fifteen (15) days from November 23 , 1987 . Any interested party may submit written comments which must be submitted by 5: 00 p.m. , Decemper 8, 1987, in order to be considered. A fourteen (14) day appeal period will commence following the finalization of the DNS. Responsible Official: Environmental Review Committee City of Renton 200 Mill Avenue South, Renton, WA 98055 Phone: 235-2500 DATE OF DECISION: November 18, 1987 EFFECTIVE DATE: November 23, 1987 Abil, AdOf R ld G. Nelson 1?"Irr, . .pring- Building and Zoning Director Policy D" elop3 t Director Richard Houghton Public rks Director W • 4110 • DETERMINATION OF NON-SIGNIFICANCE MITIGATION MEASURES PROJECT: . Oakesdale Ave. S.W. (between S.W. Grady and S.W. 16th Street) including street undercrossing under I-405. ENVIRONMENTAL CHECKLIST NO. : ECF-083-87 APPLICATION NO(S) . : SP-099-87, CU-101-87, , SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear - feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24 , T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot• #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. CONDITIONS: 1. That erosion control measures be taken and adhered to during construction including siltation fences, runoff retention and siltation ponds; 2. That the applicant coordinate with the Department of Fisheries on scheduling so as to minimize impacts to downstream water quality during critical fisheries periods; 3 . That street landscaping be approved by the city landscape ` architect as to size, species, spacing, etc. as well •as to compatibility with other landscaping in the area; 4. That surface water runoff be treated with both oil/water separators as well as grass lined biofiltering swales before being allowed to drain into the P-1 Channel. CITY OF RENTdN DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ENVIRONMENTAL CHECKLIST NO. : ECF-083-87 APPLICATION NO(S) . : SP-099-87, CU-101-87, SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of •I-405. PROPONENT: Public Works Department 1 LOCATION OF PROPOSAL: The project vicinity is the Oakesdale ' Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24, T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. LEAD AGENCY: City of Renton, Building and Zoning Department. The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43 .21C. 030 (2) (c) . This decision was made after review of an expanded environmental checklist and preliminary site plan, on file with the lead agency. Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4- 2822 (D) Renton Municipal Code (see attached sheet) . These conditions are necessary to mitigate environmental impacts identified during the environmental review process. This DNS is issued under WAC 197-11-340. The lead agency will not act on this proposal for fifteen (15) days from November 23, 1987. Any interested party may submit written comments which must be submitted by 5: 00 p.m. , December 8, 1987, in order to be considered. A fourteen (14) day appeal period will commence following the finalization of the DNS. Responsible Official: Environmental Review Committee City of Renton 200 Mill Avenue South, Renton, WA 98055 Phone: 235-2500 DATE OF DECISION: November 18, 1987 EFFECTIVE DATE: November 23, 1987 / 7Ra ld G. Nelson tr-r, .pring- Building and Zoning Director Policy D4. elop ) t Director Richard Houghton Public rks Director DETERMINATION OF NON-SIGNIFICANCE MITIGATION MEASURES PROJECT: Oakesdale Ave. S.W. (between S.W. Grady and S.W. 16th Street) including ,. street ' undercrossing under I-405. ENVIRONMENTAL CHECKLIST NO. : ECF-083-87 APPLICATION NO(S) . : SP-099-87, CU-101-87, SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24, T23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. CONDITIONS: 1. That erosion control measures be taken and adhered to during construction including siltation fences, runoff retention and siltation ponds; 2 . That the applicant coordinate with the Department of Fisheries on scheduling so as to minimize impacts to downstream water quality during critical fisheries periods; 3 . That street landscaping be approved by the city landscape architect as to size, species, spacing, etc. as well as to ^I�, compatibility with other JV" landscaping in the area; �., �f Jt i 4. That surface water runoff/be / treated with both oil/water ).), separators — C =as grass lined biofiltering swales before '01 being allowed to drain into the , 0 P-i Channel. ,. lain .,...,., ,,,... ,. .,% _ .),L, - :,,,, , p -,0,,,:,,,e_i3;, y . t r C4t : 6 ige 4h k���1,�i 3 , ' ' alla % ri. "- 1, A . i. �r r. , ,, °." ''7 I l ,� 'F R r4, , +4, , , �, " F ., , e APPLICATION N o ECF-083-87, SP-099-87, CU-101-87, SM-011-87 APPLICANT CITY OF RENTON (OAKESDALE AVE. S o W LI ) PROPOSE© ACTION APPLICATION FOR A SPECIAL PERMIT TO REMOVE 5000 CUBIC YARDS OF MATERICAL TO CONSTRUCT 790 LINEAR FEET OF OAKESDALE AVENUE S,W0 AS A FIVE LANE ARTERIAL ROAD AND TUNNEL UNDERCROSSING OF 405 GENE cAL LOCATION ARID/OR ADDRESS THE OAKESDALE AVE. S,W. AREA BETWEEN S, WD 16TH ST. AND S .W. GRADY WAY POSTED TO NOTIIFY [INTERESTED PERSOSS OF AM ENVPROMMENTAL QC` Df o THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (E.R.CO) HAS DETERMINED THAT THE PROPOSED ACTION DOES I x I DOES MOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. AN ENVIRONMENTAL IMPACT STATEMENT 1 WLL 1111 WILL MOT BE REQUIRED. THE CITY OF RENTON WILL NOT ACT itN THIS PROPOSAL FOR 15 DAYS FROM THE DATE BELLOW. COMMENTS MUST BE RECEIVE© BY 1)FCFMRFR R, 1gR7 AN APPEAL OF THE ABOVE DETERMINATION MAY BE FILED WITH THE RENTON HEARING EXAMINER By 5oo PoP.M.,c� NUVFMBER 2 _ o t FOR FURTHER INFORMATION, CINTACT THE CITY IF RENT IN BUILDING 81 ZONING ,EPARTMEG T AT 225-25 0. DO NOT REM *VE THIS NOTICE WITHOUT PROPER AUTHORIZATOONe 1 ID E r, , E :I IP: A Ti APPLICATION NO. ECF-083-87,SP-099-87,CU-101-87,SM-011-87 APPLICANT CITY OF RENTON, PUBLIC WORKS DEPT.AND WASHINGTON STATE, DEPT. OF TRANSPORTATION AND U.S. DEPT. OF AGRICULTURE SOIL CONSERVATION SERVICE PROPOSED ACTION APPLICATION FOR A SPECIAL PERMIT TO REMOVE 5000 CUBIC YARDS OF MATERIAL TO CONSTRUCT 790 LINEAR FEET OF OAKESDALE AVE. S.W. AS A FIVE LANE ARTERIAL ROAD AND A TUNNEL UNDERCRQSSING OF 1-405. GENERAL LOCATION AND/OR ADDRESS LOCATED AT OAKESDALE AVE. S.W. AREAS BETWEEN S.W. 16th STREET AND S.W. GRADY WAY POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION. THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (E.R.C.) HAS DETERMINED THAT THE PROPOSED ACTION DOES % DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. AN ENVIRONMENTAL IMPACT STATEMENT WILL Wr WILL NOT BE REQUIRED. THE CITY OF RENTON WILL NOT ACT ON THIS PROPOSAL FOR 95 DAYS FROM THE DATE BELOW. COMMENTS MUST BE RECEIVED BY DECEMBER 8, 1987 AN APPEAL OF THE ABOVE DETERMINATION MAY BE FILED WITH THE RENTON HEARING EXAMINER BY 5:00 P.M., FOR FURTHER INFORMATION, CONTACT THE CITY OF RENTON BUILDING & ZONING DEPARTMENT AT 235-2550. DO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION. • • AFFIDAVIT OF PUBLICATION Alison S upan ch ,being first duly sworn on oath states that he/she is the Chief Clerk of the NOTICE OF ENVIRONMENTAL DETERMINATION VALLEY DAILY NEWS ENVIRONMENTAL REVIEW COMMITTEE RENTON,WASHINGTON • Kent Edition • Renton Edition • Auburn Edition The Environmental Review Committee (ERC) has issued a Determination of NON- Dail newspapers six (6) times a week.That said newspapers SIG project(s) under the aDuthority for the follow- Ypublisheding under the authority of the are legal newspapers and are now and have been for more than six Renton Municipal Code. The Applicant(s) months prior to the date of publication referred to,printed and published have completed a mitigation process pursu- ant to WAC 197-11-350. in the English language continually as daily newspapers in Kent, King S Vv.CI)CITY OF RENTON (OAKESDALE AVE. County,Washington.The Valley Daily News has been approved as a legal for Prit to newspaper by order of the Superior Court of the State of Washington for remo e'cation 5000 cubicayardsSpecofl material to King County. construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of 1-405. The project The notice in the exact form attached,was published in the Kent Edition vicinity is the Oakesdale Ave. S.W. area , Renton Edition x , Auburn Edition , (and not in between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section supplement form) which was regularly distributed to its subscribers 24. T23N., R4E. The construction will occur during the below stated period.The annexed notice a in public street and state rights-of-way and in Tax Lot#4 of Section 24,T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Environmental Committee Earlington Garden Add., Division #1. File was published on 1N ov 23, 1987 SMs01E 87083-87, SP-099-87, CU-101-87, This decision will be finalized in 15 days. Written comments received after 5:00 P.M., December 8, 1987, will not be considered. The full amount of the fee charged for said foregoing publication is the A fourteen (14)day appeal period will com- mence following the finalization of DNS. sum of $ 32. 0 0 • The mitigation measures imposed by the City of Renton's Environmental Review Committee ZoningDepartment are available, Municipal at the BuildingBuilding and, 1 - C 1,10-'/1 A Renton,Washington. Phone 235-2540. Published in the Valley Daily News Nov. 23, 1987. R2635. Subscribed and sworn to before me this_tat_day of Da c 19 , Cee(p,,g_ , Notary Public for the State of Washington, residing at Federal Way, !".:, 0.r E ' . .i' TO6� King County, Washington. IT\ r._, C" u ' VDN#87 Revised 11/86 l 0 1 DEC 151°q7 �.i .q, r" / ...ltl^:P pj 1 rr 4 + #. I F i NotEnvDet/Dskl Oakes128 NOTICE OF ENVIRONMENTAL DETERMINATION ENVIRONMENTAL REVIEW COMMITTEE RENTON, WASHINGTON The Environmental Review Committee (ERC) has issued a Determination of NON-SIGNIFICANCE - MITIGATED for the following project(s) under the authority of the Renton Municipal Code. The Applicant(s) have completed a mitigation process pursuant to WAC 197-11-350. CITY OF RENTON (OAKESDALE AVE. S.W. ) Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th Street and S.W. Grady Way. All located in the east 1/2 of Section 24, T23N. , R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. File Nos. ECF-083-87, SP-099-87, CU-101-87, SM-011-87 . This decision will be finalized in 15 days. Written comments received after 5: 00 P.M. , December 8, 1987, will not be considered. A fourteen (14) day appeal period will commence following the finalization of DNS. The mitigation measures imposed by the City of Renton's Environmental Review Committee are available at the Building and Zoning Department, Municipal Building, Renton, Washington. Phone 235-2540. Published: November 23 , 1987 *5/067 ( (4) ) BUILDING AND Zi,)NING DEPARTMENT ENVIRONMENTAL REVIEW COMMITTEE STAFF REPORT November 18, 1987 A. BACKGROUND: APPLICANT: City of Renton, PROJECT: Oakesdale Ave S.W. (between S.W. Grady and S.W. 16th St) including street undercrossing under I-405. ENVIRONMENTAL CHECKLIST: ECF-083-87 APPLICATION: SP-099-87, CU-101-87, SM-011-87 DESCRIPTION OF PROPOSAL: Application for a Special Permit to remove 5000 cubic yards of material to construct 790 linear feet of Oakesdale Ave. S.W. as a five lane arterial road and a tunnel undercrossing of I-405. LOCATION OF PROPOSAL: The project vicinity is the Oakesdale Ave. S.W. area between S.W. 16th St. and S.W. Grady Way. All located in the east 1/2 of Section 24, T23N. , R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Section 24, T23N, R5E and Lots 6 thru 20 of Block 35 of C.D. Hillmans Earlington Garden Add. , Division #1. B. ISSUES: Whether impacts on water quality from the proposed project during construction and thereafter can be adequately mitigated? Whether traffic impacts from the proposed project can be adequately mitigated. Whether adequate measures to control erosion have been provided? C: RECOMMENDATIONS: That the ERC issue a Determination of Non-Significance Mitigated with the following conditions: 1. That erosion control measures be taken and adhered to during construction including siltation fences, runoff retention and siltation ponds; 2. That the applicant coordinate with the Dept. of Fisheries on scheduling so as to minimize impacts to downstream ' water quality during critical fisheries periods; 3. That street landscaping be approved by the city landscape architect as to size, species, spacing, etc. as well as LVii7L11YV Ci1YL (JVIY IJYV LiltCli\il'll'11Y1 ENVIRONMENTAL REVIEW !IMITTEE STAFF REPORT September 23 , 1987 Page 2 to compatibility with other landscaping in the area; 4. That surface water runoff be treated with both oil/water separators as well as grass lined biofiltering swales before being allowed to drain into the P-1 Channel; D. COMMENTS OF REVIEWING DEPARTMENTS: Various City departments have reviewed and commented upon the project. These comments are as follows: Police Department: Traffic control devices at Grady & 16th appropriate to handle Lind overpass closing traffic influx. �s. Fire Prevention Bureau: Probable minor impacts noted for all environmental elements with the following comment: 1. Need to work out possible access problems during construction. Desicin Engineering: Probable major impact noted for Transportation and minor impacts noted for all other environmental elements, with no further comment. Traffic Engineering: Probable minor impacts noted for all environmental elements with no further comment. Utility Engineering: Probable minor impacts noted for Public Services and Utilities with the following comment: 1. Fifteen inch water main extension required per attached map. Parks and Recreation: Probable major impacts on recreation and transportation. Reviewer provided the following comments: The applicant has addressed a major park concern by accommodating non-motorized traffic on the Springbrook Under- crossing. Since S.W. 16th Street will be designated as a trail route in the trails Master Plan it wil be important that the Oakesdale Avenue S.W,/S.W. 16th Street intersection be designed to accommodate both pedestrian and bicycle traffic. further access for the Springbrook Trail from S.W, 16th Street will need to work from both east and west directions for both pedestrians and bikes. These considerations are especially iimprtant)since the Oakesdale under-crossing has not been designed to accommodate non-motorized transportation. Building Division: Probable minor impact noted for housing with no further comment. Zoning Division: More information requested on impacts to Earth and Plants. Probable major impacts noted for Air and Transportation. Probable minor impacts noted other BUILDING AND! ZONING DEPARTMENT ENVIRONMENTAL REVIEW NIMITTEE STAFF REPORT September 23, 1987 Page 3 environmental elements. The following comments were made: 1. Will a 404 permit be required? 2. Surface water from I-405 and Oakesdale Avenue is to be discharged into Springbrook Creek/ P-1 Channel. Oil Separators should be used in addition to the proposed grass swale/biofilter system. , 3. Street Landscaping along Oakesdale Avenue should match treatment as planned elsewhere along that avenue. Th' checklist says landscaping here *ill be in a "modified version" but does not explain any detail. , 4. The P-1 Footpath should be a permanent all season trail and should be paved. A Cintrex material is not desirable. 5. Will a 15 foot vertical clearance beneath I-405 for Oakesdale really be satisfactory since the WSDOT Local Agency guidelines require a vertical clearance of 16 feet 6 inches. Policy Development: • eo CITY !F NT1 Lawrence J. War orney Daniel Kellogg - David M. Dean -Mark E. Barber - Zanetta L. Fontes -Theodore R. Parry Assistant City Attorneys November 3 , 1987s. Terra Prodan i LI Department of Ecology r� Mail Stop PV-11 '� i'; / ZONiNG DEPT. Olympia, Washington 98504-871.1 Re : I-405 HOV Lane Widening and Oakesdale and P-1 Channel Box Culvert Dear Ms. Prodan: Thank you for meeting with the Department of Transportation and the City of Renton concerning the HOV lane widening and the associated City of Renton projects. Also thank you for contacting Alan Miller , the Assistant Attorney General assigned to your Department. I had an opportunity to speak with him on Tuesday, October 27 , 1987. This letter is to try and memorialize my understanding of the Department of Ecology' s position following that telephone conversation. The Department of Ecology believes that there is no legal requirement for it to give notice to a party that a stream has been determined to be of a flow subject to shoreline jurisdiction. If the stream has a . flow of 20 cfs mean annual flow, even if the Department of Ecology has not discovered that fact, any construction will require a shorelines permit. For example, if the construction was well advanced before it was determined that the stream had flow making it within DOE ' s jurisdiction, the permit application would be required . However, • if a project is sufficiently advanced, it need not stop while obtaining a shorelines permit. Such is the case here. Because of the advanced stages of engineering , and the fact the project has gone to bid, the bids may be opened, the bid awarded and construction started before the shorelines permit has actually been granted. However, it is incumbent upon the State Department of Transportation and the City of Renton to make a timely application for a shorelines . permit and aggressively pursue that permit. It is understood that the 405 HOV lane widening project and the Oakesdale road construction probably are not of great concern to the Department of Ecology and that the permits will probably be more or less pro forma. The P-1 box culvert is of somewhat more concern to the Department. it is felt that the installation of that improvement, at substantial expense, will probably be looked Post Office Box 626 - 100 S 2nd Street - Renton, Washington 98057 - (206) 255-8678 a Terra Prodan • November 3 , .1987 • Page 2 upon as predetermining the issue of the diversion of Springbrook Creek into the box culvert. However , the box culvert is an essential element of the HOV lane widening project in that it must be constructed at the same time as the lane widening or it will be physically impossible or uneconomical to do so at a later time. Also, the one wall of the box culvert is a required wall to allow the construction of Oakesdale Avenue . Because of the concerns expressed by the Department of Ecology and others, the City of . Renton has met with its affected Departments, and has determined that following the box culvert construction, the City will review the P-1 Channel project from 16th S. through the Valley and re-analyze the necessity of the project , the extent of the impacts of the wetlands on the project and will attempt to involve DOE and other affected State and Federal agencies in this inquiry as well as inviting public participation in the process. Additionally, it is understood by the City that Springbrook Creek will not be diverted into the P-1 box culvert under I-405 until the City has processed and obtained another shorelines permit for that diversion. It is also the City of Renton' s understanding from meetings with the .State Department of Fisheries that the Department of Fisheries believes that the present design for the box culvert is a preferable design over the designs discussed in the Soil Conservation Services environmental impact statement for the P-1 Channel project. The preceding discussion is rather lengthy. I repeat it simply to show you that the City of Renton is sensitive to the concerns expressed by the Department of Ecology and that we prefer to work with you and the State Department of Transportation so as to further everyone ' s interest in this project. I know I express for all of the involved people with the City of Renton my appreciation for the Department of Ecology making a prompt decision on this matter. We all realize the time constraints under which you act and that like all governmental departments, you are shorthanded. Very truly yours , • Lawrence J. Warren LJW:nd N8 . 13 : 78 cc: Larry Springer Dick Houghton John Adamson Ron Nelson • Mike Parness Ron Matilla (DOT) Mayor t 161.4 c f -la)/ =,f NOTICE OF APPLICATION FOR SHORELINE MANAGEMENT ' SUBSTANTIAL DEVELOPMENT AND CONDITIONAL USE PERMIT Notice is hereby given that the City of who is AFFIDAVIT OF PUBLICATION Renton Public Works owner of the below-described props Department escribed property has.. filed an application for a substantial devel- opment and.conditional use permit for the development of 790 linear feet of Oakes- P.udro [' 2.onner ,being first duly sworn on oath states dale Avenue S.W. as a five lane arterial that he/she is the Chief Clerk of the road (58 feet wide) and a tunnel under- crossing of 1-405 located at.Oakesdale Ave. S.W. from S.W. Grady Way to S.W. 16th Street within the east half of section 24 of VALLEY DAILY NEWS township 23 N.,Range 4E W.M.,in the City i of Renton,Washington. Said development Kent Edition ® Renton Edition ® Auburn Edition t is proposed to be within the State Shoreline of Springbrook Creek and/or its associated Daily newspapers published six (6) times a week.That said newspapers wetlands. Any person desiring to express ' his views or to be notified of the action are legal newspapers and are now and have been for more than six taken on this application should notify City months prior to the date of publication referred to,printed and published of Renton, Building and Zoning Depart- in the English language continually as daily newspapers in Kent, King meet, Renton Municipal Building, n 90 Mill inCount Washington.The ValleyDailyNews has been approvedAvenue South, Renton, Washingtonin thirty9ys of Y, g as a legal in writing of his interest within days of newspaper by order of the Superior Court of the State of Washington for I the final date of publication of this notice which is November 2,1987. King County. Written comments must be-received by December 3,1987. The notice in the exact form attached,was published in the Kent Edition I Published in the Valley Daily News Oct. , Renton Edition , Auburn Edition , (and not in 126 and Nov.2,1987.R2588. supplement form) which was regularly distributed to its subscribers during the below stated period.The annexed notice a Noticc cf Application was published on u a a 2588 • The full amount of the fee charged for said foregoing publication is the sum of $ 47.76 • . ) Subscribed and sworn to before me this 3rd day of Novembex'19 87 • • Notary ublic for the State of Washington, residing at Federal Way, King County, Washington. VDN#87 Revised 11/86 • OF R�� -o THE CITY OF RENTON POLICY DEVELOPMENT DEPARTMENT • 235-2552 n NIL MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH.98055 0,9 0 A �Q qi!41. SEPT BARBARA Y. SHINPOCH MAYOR MEMORANDUM DATE: October 28, 1987 TO: Larry Springer, Policy Development Director FROM:1Wuancy Laswell Morris, Senior Planner SUBJECT: Oakesdale Avenue Shoreline/Fill Permit After reviewing the application I have the following y environmental comments: 4 1. NOISE ` The echoes and vibrations in the tunnel could produce a significant volume of noise, particularly impactin. users of the tunne�c. during am and pm peak hour travel times The .noise could be substantially reduced by installing acoustical . tiling (baffles.) in the tunnel. Given the pre-existing noise from the freeway which impacts the trailer park just north of Longacres, it is doubtful 1 that the noise generated by the tunnel would have :, ,�t a <wr� f;, , -6 0� 7 significant impact at that point. Nt'� .+iWAJ '( 2 . DRAINAGE As we 'have discussed, the pumps under the tunnel are sized to handle .a 500-year storm. The standard design storm for this city is a 25 year storm. Since the P-1 will be sized to carry the floodwaters during a 500-year event, it would seem odd to have such pump capacity in the tunnel. I strongly recommend that the entire drainage system by re- evaluated both for capacity and for water quality. Oakesdale Shoreline/Fill Permit Page 2 3 . WATER QUALITY The runoff from both this roadway and the I-405 freeway will collect in the sump under the Oakesdale tunnel. The pumps will pump this runoff directly into Springbrook Creek without any water quality treatment. Oil/water separators - would be of questionable effectiveness unless they are carefully engineered and maintained to prevent the "big flush" incidents. I would recommend that this water be discharged into grassy swales which would provide bio- filtration prior to emptying into Springbrook Creek. 4. ENVIRONMENTAL HEALTH The probability of a hazard1waste spill either in the tunnel or on the freeway is high, especially given the lifetime of this project. With the current drainage design, any spilled material would be directly discharged into Springbrook Creek by the sump pumps. I would recommend that a supplementary drainage/runoff analysis be performed immediately to develop a solution for treating and detaining runoff. 5. AESTHETICS The application does not adequately discuss the aesthetic treatment of the walls and tunnel. I would recommend that the ERC impose a condition requiring a full aesthetics/architectural plan to be submitted to ERC and approved prior to the beginning of construction. 6. LANDSCAPING The landscaping plan would eliminate existing rows of trees and revegetate using native grasses. I would recommend that the landscaping be enhanced with larger species in the right-of-way, and especially along the walls. 7. TRAFFIC SAFETY A. The distance between the tunnel (which is proposed to be 120 feet long and lighted) and the intersections at Grady Way and SW 16th Street is very short: approximately 325 feet. A traffic light will be needed at Grady Way, and possibly-at SW 16th Street. I would recommend that Traffic Engineering evaluate the plans for any traffic safety devices which may be needed. B. The existing driveway for Loneacres warehouse is immediately adjacent to the roadway. The driveway should be relocated to the east of the warehouse at the City's expense. No parking in front of the building should be permitted. Oakesdale Shoreline/Fill Permit Page 3 C. An access into Longacres Racetrack is located less that 50 feet west of Oakesdale. This access could pose significant traffic hazards. Perhaps it should be closed and another route developed with City participation in the cost. 8. FILL PERMIT Conditions of approval will be necessary of the Fill/Shoreline Permit to (a) prohibit any temporary storage of spoils in the Green River Valley; (b) limit the times and routes of hauling; and (c) require roadway cleanup. / CERTIFICATION OF POSTING I, Joseph Sparr, hereby certify that notices of application for Shoreline Management Substantial Development and Conditional Use Permit for the below-described property were posted by me on October 28, 1987, as prescribed by law. Development of 790 linear feet of Oakesdale Avenue S.W. as a five lane arterial road (58 feet wide) and a tunnel undercrossing of I-405 located at Oakesdale Ave. S.W. from S.W. Grady Way to S.W. 16th Street within the east half of section 24 of township 23 N. , Range 4E W.M. , in the City of Renton, Washington. 41, SIGNED: c.� ef QO2'24� eph parr { ATTEST: Subscribed and sworn to before me, a Notary Publ ' in and for the State of Washington residing at,„ , on the day of ,')e)-(yt,o / / y 3 7 1,1 eic.4,1A %:. i i OF R4? 0 -. : *Piz, - , 40• 0.. z , ,„ "0- - t • 6111. '4;4 1 r .1) :044 • 009' 4 7'et SE00 • • NOTICE OF APPLICATION FOR SHORELINE MANAGEMENT SUBSTANTIAL DEVELOPMENT AND CONDITIONAL USE PERMIT Notice is hereby given that the City of Renton Public Works Department who is owner of the below-described property has filed an application for a substantial development and conditional use permit for the development of 790 linear feet of Oakesdale Avenue S.W. as a five lane arterial road (58 feet wide) and a tunnel undercrossing of 1-405 located at Oakesdale Ave. S.W. from S.W. Grady Way to S.WI. 16th Street within the east half of section 24 of township 23 N. , Range 4E W.M. , in the City of Renton, Washington. Said development is proposed to be within the -State Shoreline of Springbrook Creek and/or its associated wetlands. Any person desiring to express his views or to be notified of the action taken on this application should notify City of Renton, Building and Zoning Department, Renton Municipal Building, 200 Mill Avenue South, Renton, Washington 98055 in writing of his interest within thirty days of the final date of publication of this notice which is November: 2, 1987. Written comments ,must be received by December 3, 1987. FOR FURTHER INFORMATION CALL THE CITY OF RENTON: • BUILDING & ZONING DEPARTMENT 235-2550 POLICY DEVELOPMENT DEPARTMENT 235-2552 THIB'sdNIOTICE NOT TO BE REMOVED WITHOUT csnrinmes' zi arerioart le7111,Afire CURdi • SUBMITTAL DOCUMENTS OAKESDALE AVE S.W. FROM S.W. GRADY WAY TO S.W. 16TH ST. SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT FILL/GRADE PERMIT SUBSTANTIAL DEVELOPMENT PERMIT A. Application B. Statement of Justification for Preliminary Shoreline Designation and Processing Procedures C. Project Description D. Application Items 11 through 13, Conditional Use Justification E. Notice of Application II. FILL PERMIT APPLICATION A. Application . B. Supplemental Information in conformance with Submittal Processing Procedures III. ENVIRONMENTAL CHECKLIST A. Environmental Checklist B. Project Description C. Supplemental Information for erosion control, fill/grade, hydrology and drainage D. Geotechnical Report from CH2M Hill E. Letter from CH2M Hill on Hydrology IV. LEGAL DESCRIPTION V. GRAPHICS A. Regional Vicinity Map B. Oakesdale Phasing Map C. Site Plan Maps 1. Existing Conditions and Contours 2. Completed Project Plans a. Landscaping Information b. Drainage Information D. City of Renton Master Trail Plan for the Green River Valley E. Air Photo F. Profile of Road and Groundwater Table • Legal description of property.(if more;space Is required, attach a separate sheet). • See attached legal description. • • • AFFIDAVIT • John Adamson , being• duly sworn, declare that I am ®authorized representative to act for the property owner,®owner of the property involved in this application 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. - SUBSCRIBED AND SWORN TO BEFORE ME THIS f `I, DAY . OF October - 1987 . NOTARY PUBLIC IN AND FOR THE STATE OF • WASHI TON, RESIDING AT n&),:,?..04-pc) (Name of Notary Public) (Signature of Owner) 200 Mill Ave. South (Addre - (Address) • Renton, WA 98055 (City) (State) (Zip) (206) 235-2620 (Telephone) Acceptance of this application and required filing fee does not constitute a complete application. Plans and other materials required tb constitute a complete application are listed in ' : • _the "Application Procedure." Form #174 GRADING AND FILLING PERMTI' OAKESDALE UNDERCROSSING C. ATTACHMENTS: 1. Vicinity Map is attached to this document. 2. Plans are attached to this document. Plans include the excavation and construction of a roadway and tunnel under I-405. a. North arrow is shown on plans. b. Dimensions of subject parcel are shown. c. There are no buildings within 15 feet of the project which will be affected by this project. d. Contour lines are drawn at 2 foot intervals. e. Finished dimensions, elevations and contours are shown on the plan titled "Completed Oakesdale Avenue Undercrossing." f. Springbrook Creek and the P-1 Channel are shown on both plans. g. All areas within the roadway right of way and within the "project boundaries" will be "disturbed." h. Finished contours are drawn at two foot intervals. Since the maximum extent of any work is approximately fifteen feet and the average ground elevation change is three feet, "ten foot intervals" would be an inappropriate scale for this application. 3. The aerial photograph with the project depicted on the photo is attached. D. DRAINAGE PLAN The drainage plan, drainage area and subsurface drainage devices are shown on the attached plans. E. LANDSCAPING PLAN Landscaping will consist of hydro-seeding the landscaped and contoured portions of the project area. F. REHABILITATION PLAN The rehabilitation plan is the "Completed Oakesdale Avenue Undercrossing." G. TEXT DESCRIPTION: 1. The quantities and types of material involved: Approximately 5000 cubic yards of native soil will be removed from this site to a site off the subject site, pursuant to a legal fill permit issued by the appropriate agency. 2. The hours of operation: The contractor will operate between the hours of 7:00 AM and 7:00 PM. Fill Permit Application - Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street Page 2 3. The time of completion and phasing: The contract is expected to begin in February or March, 1988 and complete construction by October 1, 1988. The first phase of construction will be rough excavation and grading of Oakesdale to the tunnel. The second phase will be excavation of the tunnel. The third phase will be construction of the roadway. • 4. The contractor will use Grady Way and possibly Rainier Avenue and I- 405 to haul material out of the City of Renton. Since the disposal site is the responsibility of the contractor no definite haul route can be assigned at this time. 5. Contractor will be required to maintain the roads in the vicinity of the project in a clean manner at all times, free of dirt and dust. He will be expected to use whatever measures are necessary to maintain this condition. Measures include washing debris from the roadway with a street cleaner or water truck. 6. Contractor will be allowed to remove only native soils in accordance with any approved permit.. H. SOILS REPORT is attached. I. ENVIRONMENTAL CHECKLIST is attached. 7. Do you have any plan ' for future additions, expansions, or rurther activity related to or connected with this proposal? if yes, explain. The Oakesdale Avenue S.W. roadway is proposed to be extended north to • SR 900 (Sunset Highway) and south to SR 167 (Valley Freeway). For more information, see attached project description. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. Washington State Dept. of Trans- ' portation has prepared an EIS on the I-405 HOV project from I-5 to Rainier Ave. First City Equities prepared an environmental assessment on ,the Black River Corporate Park project which included a segment of Oakesdale Ave. (Section #2, see project description) . 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. No 10. List any governmental approvals or permits that will be needed for your proposal, if known. City of Renton Shorelines Permit City of Renton Fill/Grade Permit 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. 0akesdale Ave. S.W. from S.W. Grady Way to S.W. 16th will include approxi- mately .790 linear feet of roadway, 5 lanes .( 58._ ft. ) wide. The right-of-way i s 1.10 ft. wide. Oakesdale will cross under I-405 which is being widened to a 6 lane configuration (4 GOV lanes and 2 HOV lanes). A retaining wall will " be built for".400 feet along Oakesdale . The undercrossing ,will be via a tunnel 120 feet long. See project description for more information. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topography map, if reasonably available. . While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. 0akesdale Ave. will extend 1000 feet from S.W. Grady Way to S.W. 16th St. This segment is immediately south of the Metro Renton Sewer Treatment Plant site and extends south to Longacres Racetrack. The site is generally located in the east 1/2 of Sec. 24, TS23N, R4E. The construction will occur in public street and state rights-of-way and in Tax Lot #4 of Sec. 24, T23N, R4E and Lots 6 through 20 of Block 35 of CD Hillman's Earlington Garden Add. Division #1 (see attached legal description) . B. ENVIRONMENTAL ELEMENTS 1. EARTH •, a. General description of the site, (circle one); - rolling, hilly, steep slopes, mountainous, other b. What is the steepest slope on the site (approximate percent slope)? 2-15% c. What general types of soils are found on the site (for example, caly, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland.,:. Peat, gravel , silty soils. See the.attached Oakesdale Geotechnical Report d. Are there surface indications or history of unstable.soils in the immediate vicinity? If so, describe. . ' No." - 2 - 'e , Describe the purpose,' type,= andf_approximate1gquantities of any filling or ' grading proposed.' Indicate source of fill: : ; '° - • • ' See attached information. • f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. • Yes. :Erosion could occur during grading and during construction of the' earth'fill and cuts. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? The roadway will be 790 feet long with a width of 58 feet in a 110 foot right-of-way. Total impervious surface will be 52% of the site. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: See attached information on erosion control . • 2. . AIR a. What types of emissions to 'the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project 'is completed? • If' any, 'generally describe and give . approximate quantities if known:. During construction, 'particulates and'automobile exhausts' will be generated. ' Particulates will be reduced by field watering. Upon completion, 'the ADT on this- link is projected to'be. 35,000. This level of traffic will gene'rate' substantial emissions. b. Are there any off-site sources of emission? • • No. . • c. Proposed measures to reduce or control emissions or other impacts to air, if any: During construction, particulate generation will be controlled by field watering. • 3. WATER ' a. Surface: • 1) Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. ' . - Yes. Springbrook Creek flows immediately, west of the proposed road in a similar alignment. Springbrook discharges into the. Old Black River approximately 1/2 mile north, of this, road, segment. 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. Yes. Please refer to attached maps, site plan, and shoreline sub- stantial development permit application: it 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. No fill material will be placed in or near wetlands or surface water. Neither is any dredging proposed. • • - 3 -` - r ,4) •Will the .proposal require surface water withdrawals or diversions? Give general description, purpose, and approximately quantities if known. No • 5) Does the proposal lie within a 100-year .floodplain? If so, note location on the site plan. Yes. The proposal lies entirely within the 100 year floodplain of the Green River. 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. - No. b. Ground: I) Will ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and appaoximately quantities if known. Yes. See attached letter from CH2M Hill and Geotechnical Report. A portion of the roadway will be constructed below the groundwater table. A roadway subdrain system below the 0akesdale Ave. tunnel (below I,-405) will de-water the pavement and ,pump seasonally high ' ground water' from the tunnel area into Springbrook'Creek. The planned maximum amount of. pumping is 2-3000.'g.p.m. with a. normal water flow of less than 250 g.p:m. The localized groundwater table would be per- manently lowered. ' ' 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the following chemicals . . .; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. None. ; c. Water Runoff (including storm water): • 1) Describe the source of runoff (including .storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. Runoff from the new roadway will be collected in a grassy swale/ :? biofilter system which is proposed to be constructed adjacent to the alignment. This swale system will' discharge 'into Springbrook Creek at the north and south ends of the segment. 'See attached information on runoff/drainage.' ; • • 2) Could waste materials enter ground or surface waters? If so,,generally describe. • . No' waste' discharge is planned. A major ,spill .of waste,•material on the freeway or on 0akesdale Avenue would discharge' to Springbrook Creek. �, ,r. • ! fit " ;.', . .. i y . ; d. Proposed m___Jres to reduce or control'surface;`rund,'-and 'runoff water impacts, if any: See attached drainage information. Small swale/biofilters will be constructed to receive the runoff both. from the roadway and from the tunnel pumps. 4. Plants a. Check or circle types of vegetation found on the site: �' deciduous tree: alder, maple, aspen, other ri evergreen tree: fir, cedar, pine, other , •, • d Shrubs • E( grass o crop or grain ' o Wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other o water plants: water lily, eel grass, milfoil, other • o other types of vegetation b. What kind and amount of vegetation will be removed or altered? The entire site will be stripped. Existing trees and ground cover will be removed. c. List threatened or endangered species known to be on or near the site. None. A rookery of Great Blue Herons is located approximately 1/3 mile downstream at the P-1 Ponds. d. ' Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the situ, if any: The road right-of-way will be landscaped using hydroseeding methods. See attached landscaping plan. 5. Animals a. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site: ' ' Several inventories have been done for surrounding projects including Birds: gEM pi eagle, ongbir , the the Black,River Corporate Park Mammals: .deer, bear, elk, b , other .' and the P-1 Fish: bass salmo rout, herring; shellfish, other - -. channel . b. List any threatened or endangered species known to be on or near the site. None: . • . , • CO Is the site part of a migration route? If so, explain. Springbrook Creek is a potential salmon spawning stream. State Fisheries is currently undertaking a program in conjunction with SCS and the City of Renton to rehabilitate these waters. The Green River Valley is part of the west coast Pacific flyway. Some migratory birds use the area for migration rest areas. • 1 _ G'. I(.i FJ f • .. 1 • • - 5 - d. • Proposed meL to preserve_or enhance,wildlife, +, ,any: • None: 6. Energy and Natural Resources a. What kinds of energ y (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. The Oakesdale Ave. S.W. project will use electrically powered standard street lighting for the roadway and tunnel , and electrically powered pumps for the roadway subdrain system. • b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. V None. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: None. V 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. This project would not directly cause an environmental health hazard. However, vehicles using this arterial could accidentlly spill haz- ardous materials and/or wastes onto the roadway.. . 1) Describe special emergency services that might be required. In the event of an accidental spill the City of Renton ,Fire Department would be the primary response unit. , 2) Proposed measures to reduce or control environmental health hazards, if any: None. b. Noise 1. :t 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? The adjacent freeway traffic generates substantial noise in the immediate area of the proposed project. - 6 - 5 2) What types levels of noise would be created uy-Or associated with the project on a short-term or, 'a long-term basis (for example: traffic, construction, operation, other)?: Indicate ,what hours noise would come from the site. Substantial construction noise impacts will occur'because' of the need for nighttime ' only' construction during the pile driving work for the tunnel . This heavy- nightime construction will occur during spring of 1988.., 3) Proposed measures to reduce or control noise impacts, if any: No possible noise controls are available for the nighttime construction activity for the tunnel . After the tunnel is completed, the Oakesdale road work will be constructed during daytime .;hours reducing community impacts. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? The (right-of-way) site is vacant. Adjacent uses are: Longacres barn to S.W. Longacres warehouse to S.E. Bitney commercial building to east. Trailer park to west. • b. ' Has the site been used for agriculture? If so, describe.' The entire site has been used for'horse pasturage. • c. Describe any structures on the site. No structures are in the right-of-way corridor, although the roadway will take 5-6 stalls of the Longacres warehouse parking lot. d. Will any structures be demolished? If so, what? No e. What is the current zoning classification of the site? • The majority of the site is zoned manufacturing park (14 P) with a small. corner of commercial (B-1 to the S.W. f. What is the current comprehensive plan designation of the site? Greenbelt. To the northwest, the Comprehensive Plan designates light industrial , to the east, manufacturing park, and to the southwest, commercial , g. If applicable, what is the current shoreline master program designation of the site? • The site has not been formally designated but is proposed for an urban environment. See Shoreline. Substantial Development app]i.cati on. h. Has any part ot the site been c assi ie as an environmentally sensitive area? If so, specify. Yes. The entire site is designated "greenbelt" on the Comprehensive Plan and is therefore classified as "environmentally sensitive" pursuant to the City's, Environmental Ordinance. 1 i. Approximately how many people would reside or work in the completed project? None j. Approximately how many people would the completed project displace? None k. Proposed measures to avoid or reduce displacement impacts, if any: 1 ' None - 7 - 1. Proposed me...a es to ensure the proposal is com;,,.,..ble, with existing and t. projected land uses and plans, if any: The new Oakesdale'Ave. S.W. 'street improvement will serve as an • • improved transportation element for the Renton Green River Valley 9. . Housingi ndustri al. area. The road is needed to serve .the development in the area and to link' Kent, Renton'.and south Seattle industrial areas. See project description. • :- • a. , Approximately how many units •would be .provided, if • any? Indicate whether high,,middle, or low-income housing.. ; . . , . • None:. b. - Approximately how many units, if any, would be eliminated? Indicate . whether high, middle, or low-income housing. _ .None . - c. Proposed measures to reduce or control housing impacts, if any: None 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the.principal exterior building material(s) proposed. The road will be constructed either at, grade or as a depressed roadway. 1 Adjacent retaining walls will be a maximum.of 3 1/2.,feet above the road- way surface and the win `walls along the tunnel would be 12 to 14 feet mat at views in the immediate vicinity would be altered or obstructed? in height. The view from the proposed trail and shoreline will be impacted, by the introduction of 'a 5-lane arterial into a presently undeveloped corridor. A row of large trees will be removed. c. Proposed measures to reduce or control aesthetic impacts, if any: The road right-of-way will be landscaped using grasses. See landscaping plan. 11., Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? The roadway will be illuminated with standard street lighting at night. 'The tunnel may be illuminated in the day. b. Could light or glare from the finished project be a LIsafety hazard or interfere with views? No • c. ' What existing off-site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts, if any: The City standard flat lens light luminaries will not cause a significant impact upon the residential area to the west. - 8 - . • 12. Recreation a. What .designated and informal recreational- opportunities„ are in the immediate vicinity? • • _ Oakesdale Ave. i s; planned in .conjunction with a scenic recreational' corridor' 1inking the Black River.riparian forest /P-1 pond in the north with. the City-owned wetlands,' Panther Creek wet- lands, Cedar River trail and Springbrook Creek Corridor. - The trail system is designed along the western side of Springbrook Creekin the area (see b. Would the proposed project displace any existing recreational uses? If so, trail map describe. attached) . No c. • Proposed measures to reduce or control impacts' on recreation, including recreation opportunities to be provided by the project or applicant, if any: • None 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, national, state. or local preservation registers known to be on or next to the site? If so, generally describe. No b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or'next to the site. None c. Proposed measures to reduce or control impacts, if any: N/A • 14. Transportation a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. ' See vicinity map. Oakesdale Ave. would provide a key access point into the Green River Valley. Other public streets and highways .in the area are I-405, S.W. Grady Way, and S.W. 16th Street. b. Is site currently served by public transit? If not, what is the approximately distance to the nearest transit stop? Yes. Metro operates on S.W. Grady Way. c. How many parking spaces would the completed project have? How many would the project eliminate? No parking spaces on the roadway would be created. Five to six parking stalls on the Longacres warehouse parking lot would be taken for the right-of-way. The City will need to reconfigure the parking lot to create replacement stalls. d. Will the proposal require any new roads or streets, or improvements to • existing roads or streets, not including driveways? If so. generally describe • (indicate whether public or private). The Oakesdale Ave. project is planned to be completed in six stages, this segment being the third stage. It is presumed that the remainder of the road would be completed as soon as funding becomes available. See project description. ' • as - 9 - ' • e. Will the use (or occur in the immediate v 'L,aty of) water, rail, or air transportation? If so, generally describe. Lf • Yes. • Immediately north of the project is a spur of the Burlington , Northern Railroad' Company. This project would not'affect operation • f. , hofwtmany vehicular trips per day would be generated by the completed . . project? If known, indicate when peak volumes would occur... . The proposed ADT volumne at this link of Oakesdale: is, estimated to • . be 35,000 cars per.day•by year 2000.. . g. Proposed measures to reduce or control transportation impacts, if any: See project description. The City of Renton has developed a Valley • Transportation Improvement Program pursuant to SEPA to mitigate impacts of development in the Green River Valley. This roadway link is a critical element to_be built under this program. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. No. The street will require operation and maintenance by the City of Renton. b. Proposed measures to reduce or control direct impacts on public services, If any. The street has been designed for maximum life and minimum public expenditure. 16. Utilities a. Circle utilities currently available at the site: electricity, natural gas, . water, refuse service, telephone, sanitary sewer, septic system, other. All utilities are available in the project area: b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. New water mains, sanitary sewers, and storm drainage will be constructed with the project. C. SIGNATURE • • • v I, the undersigned, state that to the best of my knowledge the above information is true and -complete. It is understood that the lead agency may 'withdraw any declaration of non-significance that it might issue in reliance upon this checklist should there be an willful misrepresentation or willful lack of full disclosure on my part. Proponent: d./4124". Name Printed: Cra / 40104.01 soa• • - 10 - • • #176 11-8-84 • PROJECT DESCRIPTION OAKESDALE AVENUE S.W. GRADY WAY TO S.W. 16TH STREET I. BACKGROUND The City of Renton has recognized for a number of years the need for a major arterial to link the southern portion of the Seattle industrial area with the industrial parks in Renton and Kent. This link was first discussed as the Valley Parkway S.W. in the Advance Planning Study Report prepared for the City of Renton by URS Company in 1982, and refined in the Valley Transportation'Improvements Program report prepared • for the City of Renton by CH2M Hill in 1985. Oakesdale Avenue is seen as a critical transportation link for the City of Renton and the South Puget Sound Region. Oakesdale Avenue is designated as a major arterial street (five lanes) within and through the City of Renton. At its northern terminus, it will connect with SR 900 (Empire Way), which will allow direct access to I-5. At its southern terminus it will connect with SR• 167, the East Valley Highway in the City of Kent, Washington. Oakesdale Avenue will carry traffic into and through the major employment centers of the Black River Industrial Area and the Renton Valley Industrial Area. Upon completion Oakesdale Avenue will extend 3.23 miles and carry approximately 32,450 automobiles and trucks per day. II. PHASED CONSTRUCTION OF THE ARTERIAL Oakesdale-is projected to be built in six phases. (See Map of Oakesdale Phases) The roadway "segments" have been numbered sequentially from the north to the south. The actual construction of these segments will be phased in a different order than the description of these numbered segments. - . A. PHASE 1 Starting at the northern end of Oakesdale Avenue, the first segment would be from Empire Way to the Black River Industrial Park, approximately six-tenths of a mile. This segment has been identified for right of way acquisition on the King County Six Year Traffic Improvement Plan. B. PHASE 2 The second segment is three-tenths of a mile through the Black River Industrial Park to S.W. Grady Way. This phase is currently under construction. *C. PHASE 3 The third section from S.W. Grady Way, under I-405 to S.W. 16th Street is approximately 790 feet. This is the project that is the subject of this application. It is proposed that this project be constructed between March 1988 and October 1988. The undercrossing under I-405 will be built in conjunction with the freeway construction project to add HOV lanes. Project Description Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street Page 2 • D. PHASE 4 The fourth section from S.W. 16th street to S.W. 30th St is approximately one mile. This segment is identified in the Valley Transportation Improvements Program report. Right- of-way corridors have been identified, but no design work or right of way acquisition has yet begun. E. PHASE 5 The fifth section extends 2/5 of a mile from approximately S.W. 30th to S.W. 43rd Street. This section has been completed and is open to traffic. F. PHASE 6 The final section, from S.W. 43rd Street to the East Valley Road in Kent, Washington, is approximately three-fifths of a mile. This section is identified in the Valley Transportation Improvements Program study. No design work has begun on this section. is III. NEED FOR PHASE : S.W. GRADY WAY TO S.W. 16TH STREET A critical transportation need in the Valley is this segment, the construction of Oakesdale Avenue from Grady Way, under I-405 to S.W. 16th Street. The Renton Green River Valley is boxed by major barriers: I-405 to the north, SR 167 to the east, the Burlington Northern Railroad Tracks to the west and S.W. 43rd Street to the south. Improved accessibility into the valley is constrained by the ability to breach the barriers, especially I-405. (See the Vicinity Map) At present, there are only two routes which cross I-405, Lind Avenue and West Valley Highway. These routes cannot accommodate present, let alone future projected traffic. The Valley Transportation Improvement Program, which has been designed as a SEPA mitigation program, identifies this Phase 3 segment as a key to future transportation network because the 1-405 undercrossing will enable Oakesdale Avenue to become a major arterial link between the valley and the industrial areas in Seattle,and Kent. IV. PROJECT DESCRIPTION: S.W. GRADY WAY TO S.W. 16TH STREET The Oakesdale Avenue project which is the subject of this application consists of two elements: a five lane arterial roadway and a tunneled undercrossing of I-405. The total project will be 790 feet of road surface on a 110 foot wide right-of-way. The road segments will be 670 feet long by 58 feet wide. The tunnel will be 120 feet long by 58 feerwide, and is included in the 790 feet of roadway. The five-lane road segment will begin at grade at S.W. Grady Way and gradually lower into the tunnel section which will be a maximum of 5 feet below grade. From the low point in the tunnel the roadway will again rise back to ground level S.W. 16th Street. To stabilize the road below grade, walls will be constructed on either side. To the north of I-405, the wall will graduate from ground level to six feet high on the eastern side and 4 feet high on the western side. The outside exposure of the wall will generally be 4 feet high. To the south of I-405, the wall will reach a height of two feet on the western side and 5 feet on the eastern side. The maximum outside exposure will be two feet on the west and 3 feet on the east. See the Profile Map of the roadway. Project Description Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street Page 3 The Oakesdale project includes a tunneled undercrossing of I-405. The tunnel construction will consist of pilings driven into the soils underneath the freeway. A bridge section will replace the current freeway surface and will become the "lid" of the tunnel. A boxed tunnel structure 15 feet 8 inches high will be constructed under this lid with wing walls 12 to 14 feet high which will extend out from the mouth of the tunnel 2 to 4 feet on either side. Because the tunneled portion of the roadway will be below the ordinary high level of the groundwater table, a drainage/pump system will be installed. The roadbed will be lined with an impermeable liner to limit the upward movement of water through the asphalt surface. Pumps will be installed to pump the groundwater from underneath the road through a series of subsurface drains and pipes, thereby permanently lowering the local groundwater table. The flow from lowering the groundwater and the water from the surface runoff will be collected and pumped into Springbrook Creek downstream of the tunnel. The road right-of-way will be hydroseeded with native grasses. ENVIRONMENTAL CHECKLIST SUPPLEMENTAL INFORMATION EROSION CONTROL Erosion could occur during grading and during construction of the earth fills and cuts. The project will incorporate temporary erosion controls using siltation fences, temporary ponds and rock check dams in roadway ditches to trap sediment. The City will let a building contract for the actual construction of the road. It will be the contractors responsibility, in accordance with Section 1-07.15 of the 1984 Standard Specifications for Road, Bridge and Municipal Construction, to prepare a Temporary Erosion Control Plan. It is required that this plan incorporate the best management practices necessary to deal with each phase of the project's construction. It is expected that the Temporary Erosion Control Plan will have many phases due to the complexity of the project and the limited amount of work space available. The goal of the Temporary Erosion Control Plan will be to minimize, if not altogether 'Iliminate the discharge of silt laden waters into the P-1/Springbrook Channel adjacent to the project site. It is expected tha many major elements such as silt fences, hydro seeding, collector ditches, check dams, straw matting, retention/detnetion ponds, jute matting, etc., will be incorporated into the contractor's Temporary Erosion Control Plan. The plan will be reviewed and analyzed by the City or its representative, to insure it meets or exceeds the overall goal. It is expected that this project will require extensive dewatering. Normal dewatering practices will be used, and should produce a large, steady volume of clear water. This water will be discharged directly into P-1/Springbrook Creek. The discharge point will be fortified to insure that there is no erosion at the channel side or in its bottom, as an alternative. The use of the existing storm drainage system for the discharge of this water would allow for the use of an existing fortified discharge into the P- 1/Springbrook Creek. FILL/GRADE The project will require the removal of approximately 5000 cubic yards of native soil. This material will be permanently removed from this site to a site outside of the City limits of Renton, pursuant to a legal fill permit issued by the appropriate agency. No temporary storage of the excavated materials will be permitted within the City of Renton. The project will require-the importation of cubic yards of clean fill material, primarily rock, gravel and sand, to provide an adequate sub-base for the road. HYDROLOGY • For a discussion of the impacts of the project on the local hydrology please refer to the attached letter from CH2M Hill dated October 20, 1987. DRAINAGE Please refer to the drainage information included on the Site Plan for the Completed Project. '#" '.At Engineers L °'.$`" Planners CKMHI L-' Economists Scientists October 20, 1987 521810.J1 Mr. John Adamson City of Renton 200 Mill Avenue South Renton, WA. 98055 Dear John: This letter is in answer to your query concerning the impact, of the proposed Oakesdale crossing on the groundwater hydrology of the area. In short, we expect a minimal impact on the groundwater hydrology in the immediate vicinity of the project and no detectable impact beyond the immediate vicinity of the project. The groundwater table in the north end of the Green River Valley near the project location generally moves toward and discharges into Springbrook Creek. At the time of our geotechnical investigation (at the end of a long dry summer) the groundwater table was at about the same elevation as Springbrook Creek. In the fall and winter the groundwater table can be expected to rise, as a result of rainfall, and a higher quantity of groundwater would discharge into Springbrook Creek. The Oakesdale crossing would impact the hydrology both during and after construction. During construction, surface water will flow across freshly graded land and silt barriers will be required to prevent additional turbidity to the creek. Temporary dewatering wells will locally lower the groundwater table but will discharge to Springbrook Creek and so impact should be minor during construction. After construction is complete some of the roadway will be below the groundwater table for at least part of the year. To provide for satisfactory performance of the roadway, the groundwater table will be permanently lowered locally to several feet below the roadway. The flow from lowering the local groundwater and the water from surface runoff will to be collected and pumped into Springbrook Creek downstream of the crossing. CH2M HILL Seattle Office 777 108th Avenue,N.E.,Bellevue,Washington 206.453.5000 P.O.Box 91500,Bellevue,Washington 98009-2050 Mr. John Adamson Page 2 . October 20, 1987 S21810 .J1 To recapitulate, groundwater which would have moved to and discharged into Springbrook Creek (P-1 channel) will now move into a permanent underdrain system at the Oakesdale crossing. After being collected in the underdrain system the water is • pumped into Springbrook Creek with no net change. The only change would be a local one at the crossing. Surface water which would have discharged into Springbrook Creek will now be collected at the crossing and returned to Springbrook Creek along with the underdrain water with no net change. ,x Springbrook Creek will have a slight decrease in gain past the crossing and a nearly equal increase in gain downstream of Oakesdale crossing. We are pleased to provide you with this assessment and if we can be of any further assistance please call. Sincerely, Frank Jenes Principal in Charge se/cjp/001/430/T cc: Bob Bergstrom/City of Renton Chris Sundberg/CH2M HILL SHORELINE APPLICATION EXHIBIT Oakesdale Avenue S.W. I-405 Undercrossing : Legal description of properties which all, or in part, are affected by the construction of the Oakesdale Avenue S.W. Street Improvement: Right-of-Ways . I-405 Right-of-Way between Stations 147+00 to 149+25 - W.S.D.O.T. . S.W. Grady Way Right-of-Way between Stations 85+00 and 81+00 - City. . S.W. 16th St. Right-of-Way between Stations 34+00 and 37+00 - City. . Oakesdale Ave. S.W. Right-of-Way (old R/W from Plat and not open) between 'S.W. 10th St. and S.W. Grady Way - City. Properties - all or in part to be acquired by City of Renton. . Longacres Industrial Park: Lots #1 through #10 and #19 through #27 of Block 35 of C.D. Hillman's Earlington Garden of Eden, Division #1. . Puget Power - Tax Lot 24-23-4 - #4. See attachment for full legal. . Storm Utility Right-of-Way - City Lots #11 through #18, Block 35 of C.D. Hillman's Earlington Gardens Division #1. r i m - 1D.2.03.REB:mf 10/22/87 cmr, i c—) I F-4 ' H 0 LEGAL DESCRIPTION: That portion of the Southwest Quarter of the Northeast Quarter and the Northwest Quarter of the Southeast Quarter in Section 24, Township 23 North, Range 4 East, W.M. in King County, Washington described as follows: BEGINNING at the intersection of the North line of South 153rd Street, with the East line of said Northwest Quarter of the Southeast Quarter; Thence Westerly along sai,d street 350 feet; Thence Northerly at right angles to said street line, 800 feet, more or less, to the Southerly line of Puget Sound Electric Railway right—of—way; Thence Northeasterly along said right—of—way 360 feet, more or less, to its intersection with the East line of said Southwest Quarter of the Northeast Quarter; Thence South 860 feet, more or less, to the TRUE POINT OF BEGINNING; EXCEPT that portion thereof conveyed to the State of Washington for Black River Junction—Renton Road; AND EXCEPT that portion thereof conveyed to the State of Washington for Primary State Highway No. 1 by deed recorded under Auditor's's File No. 5516657; AND EXCEPT that portion lying within F.A.I. Highway No. 405; AND EXCEPT that portion lying within an existing drainage ditch right of way condemned by King County for drainage District No. 1 October 1902; under King County Superior Court Cause No. 32912; SUBJECT TO: Covenants, conditions and restrictions contained in instrument recorded February 23, 1973, Auditor's File No. 7302230486; AND SUBJECT TO relinquishment of right of access to State Highway, by Deed to State of Washington recorded December 7, 1962, Auditor's File No. 5516657; AND SUBJECT TO Right of way granted March 21 , 1967 under Auditor's File No. 's 6152512 and 6152513; AND SUBJECT TO Easement for electric transmission line recorded July 30, 1918, Auditor's File No. 1232950. 1D.2.03.REB:mf 10/22/87 0398Z CITY OF RENTON Building & Zoning Department (206) 235-2550 W SHORELINE MASTER APPLICATION APPLICATION FOR: I OFFICE USE ONLY: Application No. : SM-011-87 IXI SUBSTANTIAL DEVELOPMENT ECF No. : ECF-097-87 z PERMIT SEC-TWP-R: IX I CONDITIONAL USE PERMIT Date Approved : -i I--I VARIANCE Date Denied : _ Publication Date: I_.I EXEMPTION Comprehensive Plan: II REVISION Zoning: Water Body: Springbrook Creek STAFF USE ONLY -- ADMINISTRATIVE PROCESSING D te5,c ta'efit - Application Received By: Application Determined To Be: OCT 2 o Accepted ❑ Incomplete 198 Notification Sent On: GU!!DING/ZONING DEPT. By ( Initials) : Date Routed : Additional Material Received by: Application Determined To Be: o Accepted o Incomplete Notification Sent On: By ( Initials ) : In addition to the information below, the applicant should include a site map and any other pertinent information which will assist in the review of this application. The Building and Zoning Department reserves the right to require additional information needed to evaluate the application. APPLICANT TO PROVIDE INFORMATION REQUIRED IN ITEMS 1-10 THROUGH 14-I6 BELOW: INFORMATION: 1. Applicant Owner X Purchaser Name: City of Renton, Public Works Dept. Lessee Other Mailing Address 200 Mill Ave. S. , Renton, WA 98055 Phone: 206-235-2631 2 . Name of Property Owner Mailing Address Phone: 3 . Contact/ Consultant : Mailing Address Phone : �Y o '11 I v r IS I IN 1 .-- .� Gin ! LDING & ZONING DEPART! VT o -B • ru ♦ ,SM-o(I -F11 �\ �o� cu-tot -el NMASTER APPLICATION NOTE TO APPLICANT: Since this is a comprehensive application form, only those items related to your specific type of application(s) are to be completed. (Please print or type. Attach odditional sheets if necessary.) ----o APPLICANT 1 1 TYPE OF APPLICATION NAME FEES City of Renton Q REZONE*(FROM TO ) ADDRESS 200 Mill Avenue South ❑ SPECIAL PEST* CITY ZIP TEMPORARY PERMIT* Renton, WA 98055 ❑ CONDITIONAL USE PERMIT* ❑ SITE PLAN APPROVAL TELEPHONE 00 SPECIAL PERMIT FOR GRADE AND FILL (206) 235-2620 No. of Cubic Yards: CONTACT PERSON CI VARIANCE* Fram Section: * Justification Required NAME F o ' Q John Adamson c) ADDRESS SUBDIVISIONS: J 200 Mill Avenue South ❑ SHORT PLAT Q CITY ZIP ❑ TENTATIVE PLAT F-- Renton, WA 98055 0 PRELIMINARY PLAT ,, TELEPHONE ❑ FINAL PLAT w (206) 235-2620 ❑ WAIVER (Justification Required) J u- OWNER NO. OF LOTS: NAME PLAT NAME: City of Renton ADDRESS PLANNED UNIT DEVELOPMENT: 200 Mill Avenue South ❑ PRELIMINARY CITY ZIP a FINAL Renton, WA 98055 P.U.D. NAME: TELEPHONE (206) 235-2620 ❑ Residential I[ ii;_l Industrial ❑ Commercial Mixed LOCATION MOBILE HOME PARKS: PROPERTY ADDRESS Oakesdal e Avenue between ❑ TENTATIVE S.W. Grady Way and S.W. 16th Street PRELIMINARY EXISTING USE PRESENT ZONING Vacant MP ❑ FINAL PROPOSED USE PARK NAME: Roadway NUMBER OF SPACES: 'ENVIRONMENTAL REVIEW COMMITTEE SQ. FT. ACRES ' """ AREA: TOTAL FEES r 141040,0 1.86 DIIriti l� 2 IL ii +7 IBTWHF USE ONLY -- ADMINISTRATIVE PROCESSING T TAMP `� (� 7 APPLICATION RECEIVED BY: O CT 2 F 198 r APPLICATION DETERMINED TO BE: ❑ Accepted BUILDING/ZONING DEPT. El Incomplete Notification Sent On By: (Initials) DATE ROUTED 1 /� ADDITIONAL MATERIAL RECEIVED BY: 0/1\`� 1 APPLICATION DETERMINED TO BE: ❑ Accepted ❑ Incomplete Notification Sent On By: (Initials) ROUTED TO: ❑ Building ❑ Design Eng. ❑ Fire ❑ Parks ❑ Police El Policy Dev. ❑ Traffic Eng. ❑ Utilities .--ter REVISED 1-31-84 OF R� EC k -o83- 67 1 n LU: SP-o99 -g� 4 z City of Renton OMB ENVIRONMENTAL CHECKLIST tE0 SEPTE���P Purpose of Checklist: The State Environmental Policy Act (SEPA), chapter 43,2IC RCW, requires all governmental agencies to consider the environmental impacts of a proposal before making decisions. An environmental impact statement (EIS) must be prepared for allproposals with probable significant adverse impacts on the quality of the environment. The purpose of this checklist is to provide information to help you and the agency identify impacts from your proposal (and to reduce or avoid impacts from the proposal, if it can be done) and to help the agency decide whether an EIS is required. Instructions for Applicants: This environmental checklist asks you to describe some basic information about your proposal. Governmental agencies use this checklist to determine whether the environmental impacts of your proposal are significant, requiring preparation of an EIS. Answer the questions briefly, with the most precise information known, or give the best description you can. You must answer each question accurately and carefully, to the best of your knowledge. In most cases, you should be able to answer the questions from your own observations or project plans without the need to hire experts. If you really do not know the answer, or if a question does not apply to your proposal, write "do not know" or "does not apply." Complete answers to the questions now may avoid unnecessary delays later. Some questions ask about governmental regulations, such as zoning, shoreline, and landmark designations. Answer these questions if you can. If you have problems, the governmental agencies can assist you. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impacts. Use of Checklist for Nonproject Proposals: (Please Type or Print Legibly) Complete this checklist for nonproject proposals, even though questions may be answered "does not apply." IN ADDITION, complete the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). For nonproject actions (actions involving decisions on policies, plans and programs), the references in the checklist to the words "project," "applicant," and "property or site" should be read as "proposal," "proposer," and "affected geographic area," respectively. A. BACKGROUND 1. Name of proposed project, if applicable: Oakesdale Avenue S.W. from S.W. Grady Way to S.W. 16th Street including street undercrossing under 1-405. 2. Name of applicant: City of Renton, Dept of Public Works 3. Address and phone number of applicant and contact person: City of Renton John Adamson 200 Mill Avenue South Program Development Coordinator Renton, WA 98055 235-2620 4. Date checklist prepared: October 16, 1987 5. Agency requesting checklist: City of Renton 6. Proposed timing or schedule (including phasing, if applicable): Roadway tunnel will start construction March, 1988, and complete October, 1988. Roadway approaches will start construction March, 1988, and complete October, 1988. PROJECT INFORMATION: - 4. General location of proposed project (give street address if any or nearest street and intersection) The project is the construction of Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street. 5. Legal Description (if lengthy, attach as separate sheet) : See Attached. 6 . Name of adjacent water area or wetlands: Springbrook Creek ' 7. Current use of property and existing improvements: The road right-of-way is currently vacant, except for a small segment halfway between I-405 and S.W. 16th Street. This area is presently developed with an asphalt surfaced parking lot. 8 . PROPOSED USE OF PROPERTY and proposed improvements (be specific) : See attached project description. 9. Proposed construction costs and schedule: A. Total construction cost and fair market value of proposed project include additional developments contemplated but not included in this application: $3,503,000 B. Construction dates (month/year) for which permit is requested: Begin February 198` End October 190 10. List any other permits for this project from state, federal, local governmental agencies or the City of Renton for which you have applied or will apply, including the name of the issuing agency. whether the permit has been applied for, and if so, the date of the application, whether the application was 'approved or denied and the date of same, and number of the application or permit: City of Renton - Fill/Grade Permit is being processed concurrent with the substantial development permit.'" ITEMS 11, 12, AND 13 TO BE COMPLETED BY LOCAL OFFICIAL: 11. NATURE OF THE EXISTING SHORELIN47. (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) : See Attached. t ' 12. In the event that any of the proposed buildings or structures will exceed a height of thirty-five (35) 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. None 13. 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. See Attached. ITEMS 14, 25, AND 16 TO BE PROVIDED BY APPLICANT: 14. If applying for a variance or a conditional use, complete the variance or conditional use form. 15. Project Maps: Attach to application accurate site plan and vicinity maps. Refer to application instruction handout for map requirements. 16. Additional information (If necessary, attach as separate sheet) : 1 STATE OF WASHINGTON 1 SS CITY OF RENTON 1. I. *"� V H ti R •3 , being duly sworn. certify that I am the above-named applicant for a permit to con- struct a substantial development pursuant to the Shoreline Management Act of 1971. and that the foregoing statements, answers, and information are in all respects true and correct to th best of my knowledge and belief. viLR Si ature Subscribed and sworn to me this ) day of Notary Public in and for the State of Washington. residing at C • FORM 177 - k STATEMENT OF JUSTIFICATION . PRELIMINARY SHORELINE DESIGNATION AND PROCESSING PROCEDURES FOR SUBSTANTIAL DEVELOPMENT PERMIT AND CONDITIONAL USE PERMIT OAKESDALE AVENUE: S.W. GRADY WAY TO S.W. 16TH STREET I. INTRODUCTION On October 23, 1987, the City of Renton received an application from the Public Works • Department to construct a 790-foot section of Oakesdale Avenue S.W. from S.W. Grady • Way to S.W. 16th Street within the state shoreline of Springbrook Creek. II. APPLICATION OF THE STATE SHORELINE MASTER PROGRAM In 1972 the Department of Ecology defined the shoreline of state significance on Springbrook Creek as that segment downstream of S.W. Grady Way. In August, 1987, • this shoreline was extended approximately 1000 feet from S.W. Grady Way to S.W. 16th Street by action of the State Department of Ecology when it was determined that the segment of stream downstream from S.W. 16th Street met the criteria of a shoreline . (having mean annual flow of 20 cfs or greater). III. PROCESSING GUIDELINES AND PROCEDURES Because the Springbrook shoreline has just been expanded by state action, the City of Renton has not yet completed the process to amend its Master Program to designate the new segment. Therefore, the City proposes to process this permit and conditional use assuming that the shoreline will be designated as "urban" under the Master Plan Program and in conformance with the state master plan guidelines pursuant to WAC 173-14-100: (2) After the adoption or approval, as appropriate, by the department of an applicable master program, a substantial development permit shall be granted only when the development proposed is consistent with: (a) The policies and procedures of the act; (b) The provisions of this regulation; and (c) The applicable master program adopted or approved for the • area. A. PROPOSED MASTER PROGRAM DESIGNATION It is proposed that this segment be preliminarily designated "Urban" since Springbrook Creek downstream of this segment to the confluence with the Black River has been designated "Urban". The application will therefore be evaluated pursuant to the City of Renton Shoreline Master Program Section 5.04.01 and WAC 173-16-040 for urban areas. See Section IV below. • B. SPECIFIC USES FOR ROADS The proposed project is the construction of Oakesdale Avenue S.W. from S.W. Grady Way to S.W. 16th Street. The specific use activity will be evaluated pursuant to City of Renton Master Program Section 7.15 and Subsection 18 of WAC 173-16-060, road and • railroad design and construction. Statement of Justification Substantial Development Permit Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street Page 2 C. CONDITIONAL USE PERMIT The Oakesdale project does not strictly comply with the specific uses for roads. The City is therefore applying for a conditional use permit in order to allow greater flexibility in varying the application of the use regulations in a manner consistent with the State shorelines program. Renton Master Program Section 8.03 and WAC 173-14-140. IV. PROPOSED DESIGNATION OF SPRINGBROOK CREEK AS AN URBAN ENVIRONMENT The State Guidelines describe the urban environment as follows: (iv) Urban Environment. The objective of the urban environment is to ensure optimum utilization of shorelines within urbanized areas by providing for intensive public use and by managing development so that is enhances and • maintains shorelines for a multiplicity of urban uses. WAC 173-16-040 The City of Renton Master Program describes the urban environment as: B. High-intensity Land Uses: The Urban environment is an area of high- intensity land use including residential, commercial, and industrial development. The environment does not necessarily include all shorelines within an incorporated city, but is particularly suitable to those areas presently subjected to extremely intensive use pressure, as well as areas planned to accommodate intensive urban expansion. On certain shorelines planned for future urban expansion, there should be limitations based on the physical aspects of the site. (Section 5.04.01(B)) The expanded shoreline of Springbrook Creek from S.W. Grady Way to S.W. 16th Street is proposed to be designated an an "urban environment". This shoreline traverses an area of high-intensity land uses with the Metro Sewer Treatment Plant to-the north, a band of light industrial uses and a mobile home park to the west, manufacturing office park to the east, and a commercial racetrack to the southwest. This segment of shoreline is crossed at its midpoint by Interstate 405. The state shoreline downstream of this segment is currently designated "urban environment". The Comprehensive Plan designates the surrounding land uses for light industrial, manufacturing park and commercial uses. The zoning is manufacturing park and commercial. (See Vicinity Map, and Site Plan Map). This shoreline has been historically, and is currently being subject to intense pressure. The banks have been modified by human and animal intrusions, such that little natural vegetation remains. Immediately downstream at S.W. Grady Way, Springbrook Creek has been channelized into the P-1 drainage system. (Shoreline Substantial Development Permit SM-093-81 revis'd). The City, in conjunction with SCS, is proposing in the future to relocate this segment of Springbrook Creek from S.W. Grady Way to S.W. 16th Street into a continuation of this P-1 Channel as further development of the drainage system for the Eastside Watershed Project. This relocation and channelization is not part of this application. Statement of Justification Substantial Development Permit Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street Page 3 The urban designation appears to be the appropriate choice for this stream segment. The surrounding area is planned for intensive uses, the downstream segment of the stream is channelized for flood control, and the riparian habitat adjacent to the shoreline is seriously degraded. The presence of I-405 in conjunction with the industrial complex would facilitate development of the shoreline for human enjoyment, but would compromise significant natural habitat enhancement efforts. No adjacent wetlands are present. V. CONFORMANCE OF THE PROPOSED OAKESDALE AVENUE TO THE URBAN DESIGNATION ALONG SPRINGBROOK CREEK The proposed project, Oakesdale Avenue, is a major arterial connecting two state highways, SR 900 Empire Way, and SR 167 East Valley Freeway. This arterial is a critical link in the transportation system to serve the developing Green River Valley. The road would complement the assemblage of industrial, manufacturing park and office uses which are currently or planned to be located in this area by 1995. PROJECT DESCRIPTION . OAKESDALE AVENUE S.W. GRADY WAY TO S.W. 16TH STREET I. BACKGROUND The City of Renton has recognized for a number of years the need for a major arterial to link the southern portion of the Seattle industrial area with the industrial parks in Renton and Kent. This link was first discussed as the Valley Parkway S.W. in the Advance Planning Study Report prepared for the City of Renton by URS Company in 1982, and refined in the Valley Transportation Improvements Program report prepared for the City of Renton by CH2M Hill in 1985. Oakesdale Avenue is seen as a critical transportation link for the City of Renton and the South Puget Sound Region. Oakesdale Avenue is designated as a major arterial street (five lanes) within and through the City of Renton. At its northern terminus, it will connect with SR 900 (Empire Way), which will allow direct access to I-5. At its southern terminus it will connect with SR 167, the East Valley Highway in the City of Kent, Washington. Oakesdale Avenue will carry traffic into and through the major employment centers of the Black River Industrial Area and the Renton Valley Industrial Area. Upon completion Oakesdale Avenue will extend 3.23 miles and carry approximately 32,450 automobiles and trucks per.day. • II. PHASED CONSTRUCTION OF THE ARTERIAL Oakesdale is projected to be built in six phases. (See Map of Oakesdale Phases) The roadway "segments" have been numbered sequentially from the north to the south. The actual construction of these segments will be phased in a different order than the description of these numbered segments. A: PHASE 1 Starting at the northern end of Oakesdale Avenue, the first segment would be from Empire Way to the Black River Industrial Park, approximately six-tenths of a mile. This segment has been identified for right of way acquisition on the King County Six Year Traffic Improvement Plan. B. PHASE 2 The second segment is three-tenths of a mile through the Black River Industrial Park to S.W. Grady Way. This phase is currently under construction. **C. PHASE 3 The third section from S.W. Grady Way, under I-405 to S.W. 16th Street is approximately 790 feet. This is the project that is the subject of this application. It is proposed that this project be constructed between March 1988 and October 1988. The undercrossing under I-405 will be built in conjunction with the freeway construction project to add HOV lanes. Project Description Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street Page 2 D. PHASE 4 The fourth section from S.W. 16th street to S.W. 30th St is approximately one mile. This segment is identified in the Valley Transportation Improvements Program report. Right- of-way corridors have been identified, but no design work or right of way acquisition has yet begun. E. PHASE 5 The fifth section extends 2/5 of a mile from approximately S.W. 30th to S.W. 43rd Street. This section has been completed and is open to traffic. F. PHASE 6 The final section, from S.W. 43rd Street to the East Valley Road in Kent, Washington, is approximately three-fifths of a mile. This section is identified in the Valley Transportation Improvements Program study. No design work has begun on this section. III. NEED FOR PHASE : S.W., GRADY WAY TO S.W. 16TH STREET A critical transportation need in the Valley is this segment, the construction of Oakesdale Avenue from Grady Way, under I-405 to S.W. 16th Street. The Renton Green River Valley is boxed by major barriers: I-405 to the north, SR 167 to the east, the Burlington Northern Railroad Tracks to the west and S.W. 43rd Street to the south. Improved accessibility into the valley is constrained by the ability to breach the barriers, especially I-405. (See the Vicinity Map) At present, there are only two routes which cross I-405, Lind Avenue and West Valley Highway. These routes cannot accommodate present, let alone future projected traffic. The Valley Transportation Improvement Program, which has been designed as a SEPA mitigation program, identifies this Phase 3 segment as a key to future transportation network because the 1-405 undercrossing will enable Oakesdale Avenue to become a major arterial link between the valley and the industrial areas in Seattle and Kent. IV. PROJECT DESCRIPTION: S.W. GRADY WAY TO S.W. 16TH STREET The Oakesdale Avenue project which is the subject of this application consists of two elements: a five lane arterial roadway and a tunneled undercrossing of I-405. The total project will be 790 feet of road surface on a 110 foot wide right-of-way. The road segments will be 670 feet long by 58 feet wide. The tunnel will be 120 feet long by 58 feet wide;and is included in the 790 feet of roadway. The five-lane road segment will begin at grade at S.W. Grady Way and gradually lower into the tunnel section which will be a maximum of 5 feet below grade. From the low point in the tunnel the roadway will again rise back to ground level at S.W::-16th Street. To stabilize the road below grade, walls will be constructed on either side. To the north of I-405, the wall will graduate from ground level to six feet high on the eastern side and 4 feet high on the western side. The outside exposure of the wall will generally be 4 feet high. To the south of I-405, the wall will reach a height of two feet on the western side and 5 feet on the eastern side. The maximum outside exposure will be two feet on the west and 3 feet on the east. See the Profile Map of the roadway. • Project Description • Oakesdale Avenue from S.W. Grady Way to S.W. 16th Street Page 3 The Oakesdale project includes a tunneled undercrossing of I-405. The tunnel construction will consist of pilings driven into the soils underneath the freeway. A bridge section will replace the current freeway surface and will become the "lid" of the tunnel. A boxed tunnel structure 15 feet 8 inches high will be constructed under this lid with wing walls 12 to 14 feet high which will extend out from the mouth of the tunnel 2 to 4 feet on either side. Because the tunneled portion of the roadway will be below the ordinary high level of the groundwater table, a drainage/pump system will be installed. The roadbed will be lined with an impermeable liner to limit the upward movement of'water through the asphalt surface. Pumps will be installed to pump the groundwater from underneath the road through a series of subsurface drains and pipes, thereby permanently lowering the local groundwater table. The flow from lowering the groundwater and the water from the surface runoff will be collected and pumped into Springbrook Creek downstream of the tunnel. The road right-of-way will be hydroseeded with native grasses. js (1)) SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT OAKESDALE AVENUE FROM S.W. GRADY WAY TO S.W. 16TH STREET Application Items 11 through 13 11. Nature of the Existing Shoreline. Springbrook Creek is a small tributary of the Black/Green River drainage system. In this area the shoreline can be divided into two sections: north and south of I-405. The shoreline north of I-405 is highly disturbed. To the west filling has occurred up to the banks of Springbrook Creek smothering all the natural vegetation. To the north, the flow from Springbrook Creek has been re-directed into the P-1 drainage channel, pursuant to a substantial development permit, SM-093-81 (revised). The old Springbrook channel just north of this project has been filled. Both banks of the remaining creek were riprapped when the re-channelization occurred. The P-1 channel to the north, which is 210 feet wide, is proposed to be re-vegetated using native plants but it is just now in the completion phase of construction. South of the P-1 and north of I-405, the eastern bank of the shoreline is disturbed to within 25 feet of the bank due to the roadwork along S.W. Grady Way and the construction of the P-1 Channel. South of I-405, Springbrook Creek flows in a less disturbed shoreline. The western bank is bounded by a mobile home park associated with Longacres Racetrack. The City of Renton proposes to build a 12 foot wide trail in this area. Along the eastern bank, the shoreline is grassy fields which have served as horse pastures. The creek itself lies within a relatively deep bed with levied sides. The bank material is primarily small silts and clay which have been deposited during floods. Within 150 feet of the new P-1 channel, the banks of Springbrook Creek have been riprapped. No vegetation remains in this area. 12. None. No buildings are proposed. 13. The proposed conditional use is being proposed pursuant to the specific use regulations for road and railroad design and construction. City of Renton Master Program Section 7.15: 7.15 ROADS AND RAILROADS 7.15.01 Location A. Major highways, primary arterials, freeways, and railways are to be located away from shorelands, except in industrial areas, in order that shoreland roads may be reserved for slow-moving, recreational traffic. Substantial Development Permit Oakesdale Ave from S.W. Grady Way to S.W. 16th Street Page 2 The Green River Valley in Renton is proposed primarily for manufacturing park/office uses. The roadway in this segment lies entirely within the state shoreline. (See Site Plan 3 Map) Immediately north of this road section, Oakesdale Avenue and the P-1 Channel (which is the relocated shoreline) are adjacent for approximately 1/2 miles. (See Oakesdale Phasing Map) Oakesdale Avenue is a major arterial link between the southern portion of the Seattle industrial complex and the industrial parks in Renton and Kent. . This roadway is critical to the continued development in this area. See project description for more information. 7.15.02 Design Requirements A. Shoreline roadways should be scenic boulevards and are to be restricted to existing rights-of-way where possible. The City of Renton has recognized for a number of years the need for a major arterial to link the southern portion of the Seattle industrial area with the industrial parks in Renton and Kent. This link was first discussed as the Valley Parkway S.W. in the Advance Planning Study Report prepared for the City of Renton by URS Company in 1982, and refined in the Valley Transportation Improvements Program report prepared for the City of Renton CH2M Hill in 1985. Oakesdale Avenue is seen as a critical transportation for the City of Renton and the South Puget Sound Region. Oakesdale Avenue is designated as a major arterial street within the City. At its northern terminus, it will connect with SR 900 (Empire Way), which will allow direct access to I-5. At its southern terminus it will connect with SR 167, the East Valley Highway in the City of Kent, Washington. This segment, the construction of Oakesdale Avenue from Grady Way, under I-405 to S.W. 16th Street is a critical transportation need in the Valley. The Renton Green River Valley is boxed by major barriers: I-405 to the north, SR 167 to the east, the Burlington Northern Railroad Tracks to the west and S.W. 43rd Street to the.south. Improved accessibility into the valley is constrained by the ability to breach these barriers. (See Oakesdale Phasing Map) At present, there are only two routes which cross I-405, Lind Avenue and West Valley Highway. These routes cannot accommodate present, let alone future projected traffic. The Valley Transportation Improvement Program, which has been designed as a SEPA mitigation program, identifies this Phase 3 segment as a key to future transportation network because th I-405 undercrossing will enable Oakesdale Avenue to become a major arterial link between the valley and the industrial areas of Seattle and Kent. B. Roads located in wetland areas should be designed and maintained to prevent erosion and to permit a natural movement of ground water. There are no associated wetlands along this segment of Springbrook Creek. I Y C. All debris, overburden, and other waste materials from construction should be disposed of in such a way as to prevent their entry by erosion from drainage, high water, or other means into any water body. The project will incorporate temporary erosion controls using siltation fences, temporary ponds and rock check dams in roadway ditches to trap sediment. The spoils from the project will be removed offsite and disposed of outside the City limits of Renton in conformance with state regulations. As a condition of this project the contractor will dispose of.approximately 5000 cubic yards of native soils. `The contractor will be Substantial Development Permit Oakesdale Ave from S.W. Grady Way to S.W. 16th Street Page 3 required to dispose of this material in accordance with Section 2-03.3(7) of the 1984 Standard Specifications for Road, Bridge and Municipal Construction as amended by the City of Renton Supplemental Provisions and the project Special Provisions. In summary, the contractor disposing of excess material from a City project is required to provide documentation of any and all disposal sites he will be using. This documentation consists of a copy of the Fill Permit from the appropriate jurisdiction, together with any restrictions as to the type and/or quality of fill material which can be disposed of at the disposal site. D. Road locations should be planned to fit the topography so that minimum alterations of natural conditions will be necessary. Oakesdale Avenue must cross under Interstate 405 in order to accomplish the purpose of linking major industrial areas in the south Puget Sound region. The undercrossing will require excavation and construction of a tunnel below-the level of the ground water table. The impacts of this excavation are detailed in the accompanying checklist and technical reports. Other than the undercrossing, the road has been designed at grade with minimal disturbance of land surface. See attached map profiling the roadway and groundwater table. _ The following provisions of the State Regulations may also be applicable and are set forth in full below. WAC 173-16-060 Subsection 18: Road and railroad design and construction. A road is a linear passageway, usually for motor vehicles, and a railroad is a surface linear passageway with tracks for train traffic. Their construction can limit access to shorelines, impair the visual qualities of water-oriented vistas, expose soils to erosion and retard the runoff of flood waters. WAC 173-16-060: (e) Scenic corridors with public roadways should have provision for safe pedestrian and other nonmotorized travel. Also, provision would be made for sufficient view points, rest areas and picnic areas in public shorelines. Oakesdale Avenue is planned in conjunction with a scenic recreational corridor. The - City has planned an extensive trail network throughout the Valley linking the Black River riparian forest in the north with the city-owned wetlands, the Panther Creek wetlands, the Cedar River trail, and the Springbrook Creek corridor. This trail system is designed along the western bank of the Springbrook shoreline along this segment. The proposed Oakesdale Avenue is located along the eastern side. See the attached map of the proposed Master Trail Plan for the City of Renton. (f) Extensive loops or spurs of old highways with high aesthetic quality should be kept in service as pleasure bypass routes, especially where main highways, paralleling the old highway, must carry large traffic volumes at high speeds. This regulation would not apply to Oakesdale Avenue because it is a new roadway and does not replace an existing route. (g)Since land-use and transportation facilities are so highly interrelated, the plans for each should be coordinated. The designation of potential high-use areas in master programs should be done after the environmental impact of the transportation facilities needed to serve those areas have been assessed. Substantial Development Permit Oakesdale Ave from S.W. Grady Way to S.W. 16th Street Page 4 The Green River Valley in Renton has been designated for industrial uses since 1964. Oakesdale Avenue is being constructed to serve the growing transportation needs of this area as it is developing. Under the City of Renton Shoreline Master Program a conditional use permit will be granted subject to four conditions. Section 8.03 The proposed project conforms to these conditions: 8.03.01 The use must be compatible with other permitted uses within the area. Refer to the discussion under Section 7.15.02(A) above. 8.03.02 The use will not interfere with the public use of public shorelines. The City of Renton is proposing to construct a master trail system along this shoreline which will connect with other major recreational areas in the City and the region. See response to WAC 173-16-060 Section 18(e) above. 8.03.03 Design of the site will be compatible with the surroundings and the City Master Program • The proposed road is a critical element in the City's Valley Transportation Improvement Program, which is a SEPA mitigation program, to provide adequate access in the Renton Green River Valley industrial and manufacturing/office park complexes. The road is compatible with the urban designation being proposed for this segment of Springbrook Creek. See Statement of Justification for Urban Designation. 8.03.04 The use shall be in harmony with the general purpose and intent of the City's Master Program. The proposed road is in harmony with the general purpose and intent of the City's Master Program which recognizes the value of scare industrial and manufacturing park lands, promotes the orderly development of the City, while safeguarding the shoreline for future generations. The City has developed Oakesdale in association with a major recreational element in the City, the master trail program. NOTICE OF APPLICATION FOR SHORELINE MANAGEMENT SUBSTANTIAL DEVELOPMENT AND CONDITIONAL USE PERMIT Notice is hereby given that the City of Renton Public Works Department who is owner of the below-described p property has filed an application for a substantial development and ,conditional use'` permit for the development of 790 linear feet of Oakesdale Avenue S.W. as a five lane arterial road (58 feet wide) and a tunnel undercrossing of I-405 located at Oakesdale Ave. S.W. from S.W. Grady Way to S.W. 16th Street within the east half of section 24 of township 23 N. , Range 4E W.M. , in the City of Renton, Washington. Said development is proposed to be within the State Shoreline of Springbrook Creek and/or it's associated wetlands. Any person desiring to express his views or to be notified of the action taken on this application should notify City of Renton, Building and Zoning Department, Renton Municipal Building, 200 Mill Avenue South, Renton, Washington 98055 in writing of his interest within thirty days of the final date of publication of this notice which is November 2, 1987. Written comments must be received by December 3, 1987. r• ' " `•r r,_ / SUMMARY The proposed Oakesdale Avenue arterial connection for the City of Renton will be located roughly parallel and east of _ the P-1 Channel drainage ditch which flows in a northerly direction. Oakesdale Avenue which will pass under I-405, is located northeast of the Longacres race track. It will pro- vide the City of Renton improved, local access across I-405 and better traffic flow to and from the Longacres race track. That portion of future Oakesdale Avenue that is covered in this Technical Memorandum will extend from SW 16th Avenue northward to SW Grady Way passing under a new cut and cover bridge structure that crosses 1-405 (see attached drawings) . The total roadway length is approximately 780 lineal feet, consisting of five lanes of traffic total; two lanes each direction plus a center turning lane. .Oakesdale north of SW Grady Way is currently under construction and will be rerouted slightly to the east of its current designed alignment to match up with the Oakesdale south of SW Grady Way. Oakesdale south of SW 16th Avenue is currently only in planning stages and geometrics for this portion have not been developed. The Oakesdale project bounded by SW 16th Avenue on the south and SW Grady Way to the north is composed of three compo- nents; the bridge crossing of I-405, the Oakesdale roadway and utilities , and the P-1 Channel. WSDOT is currently planning to advertise, award, and administer the construc- tion of the bridge crossing of 1-405 , whereas the roadway and P-1 Channel construction will be packaged as a separate contract to be administered by the City of Renton. Also WSDOT desires to detour Lind Avenue traffic (located 1/2 mile east of Oakesdale) to the Oakesdale roadway during recon- struction of the Lind Avenue bridge which is currently scheduled for demolition on October 18 , 1988 . Thus, to allow the Lind Avenue traffic to detour to Oakesdale, at least two lanes of Oakesdale (one lane each direction) must be ready for traffic within approximately 15 months. The Oakesdale undercrossing of I-405 will be constructed using a cut and cover bridge construction technique that is frequently used for urban subway construction around the country. With this construction method, soldier piles will be drilled or driven using construction equipment located on the freeway. Disruption to I-405 traffic must be kept to a minimum and thus a single lane of traffic will be closed during off-peak traffic periods (nights) to allow bridge construction. Components of the bridge which must be con- II structed under these traffic conditions inclu _ d fi' F �°Arj rt D 1 F D se6016/011/1 AUG 1 1 1 °:'G-i, BUILDING/ZONING DEPT. driving of the soldier piles , excavation for reinforced con- crete pile caps, and roadway excavation for .precast, , pre-, stressed stressed concrete deck slabs, and approach slabs . At the end of the off-peak traffic work shifts , heavy steel plates will be bolted down to cover the freeway construction work so that traffic can resume unimpeded. After the piles and pile caps have been installed the roadway can be excavated to accommodate the precast concrete deck panels. The pre- cast slabs will be overlaid with. a structural concrete top- ping slab and a latex modified concrete to match the final freeway grades. Because of traffic phasing and the need to cure reinforced concrete approach slabs and topping slabs for the bridge for at least 48 hours prior to routing I-405 traffic over this work, it appears that the topping and ap • - proach slabs must be constructed during stages 7 and 9 of I-405 widening. However, in the interim period the bridge deck panels can be temporarily overlaid. with a layer of crushed rock followed by 3 inch thickness of AC pavement to match the existing freeway grades. Wing walls at the approaches to the bridge will be required to retain the fill slopes from the freeway above. These wing walls will also be constructed of soldier piles, except that the wing walls must be cantilevered because the deck panels will not be available to provide top support at these locations. Once the work on the freeway has been completed and the wing walls have been installed, soil will be excavated from un- derneath the bridge using conventional construction equip- ment such as front-end loaders and dump trucks. As the excavation proceeds downward (starting from the underside of the precast deck panels) , wooden lagging will be installed to span between the soldier piles and provide support of the earth between the soldier piles. After the lagging has been installed a mixture of sand and water will be pumped behind the Wooden lagging to fill voids which may occur during ex- cavation and placement of the lagging. After the excavation has been completed under the bridge (to the subgrade roadway elevation of Oakesdale Avenue) , the permanent cast-in-place reinforced concrete lining will be placed against the wood. lagging. The cast-in-place concrete lining will be attached to the soldier piles by field welding of studs to the steel piles. Next, underground utilities (sewer, water, and drainage lines) will be installed prior to backfilling and paving of Oakesdale. Finally lighting, channelization, sign- ing and striping will be installed to complete the under- crossing for traffic use. se6016/011/2 ALTERNATIVE COMPARISONS During the development of the Oakesdale Avenue connection to cross I-405, four different alternatives were analyzed as follows (see attached Summary Of Comparison. Of Oakesdale Project Alternatives) . ALTERNATIVE 1--LIND AVENUE DETOUR This alternative contemplated routing of Oakesdale Avenue under the existing I-405/13 drainage ditch bridges . The P-i Channel would be located east of Oakesdale and a divided roadway would be required (two northbound lanes separated from two southbound lanes) to allow traffic to pass between existing pile bents that support the I-405/13 bridges. Dur- ing development of this concept it was discovered that exca- vation under the drainage ditch bridges to allow for adequate Oakesdale vertical clearance might reduce the load bearing capacity of the existing piles that support the drainage ditch bridges. This alternative was consequently abandoned because of the potential risks of damage to the existing I-405/13 bridges and because of poor roadway geometrics. ALTERNATIVE 2--UNDERPINNING OF I-405/13 BRDIGES This alternative was similar to Alternative No. 1 as far as location and vertical alignment of the roadway. To lessen the concern regarding damage to the existing drainage ditch bridges as a result of roadway excavation for Oakesdale underneath, it was proposed that the existing bridges be completely resupported with new piles and structural under- pinning. However, underpinning of the existing pile bents would require installation of large reinforced concrete dia- phragm walls designed to transfer the bridge superstructure loads to the new pile system below. These diaphragm walls would reduce the sight distance along Oakesdale Avenue and would contribute to overall poor geometrics for this alter- native. In addition, an existing 90-inch-diameter Metro sewer pipe passes under the drainage ditch bridges would be located under the southbound lanes of Oakesdale Avenue and would require special protection from Oakesdale traffic loads because of its close proximity to the Oakesdale roadway. This alternative was abandoned because of poor roadway geometrics, extensive protection of the Metro sewer, and relatively high costs. se6016/013/1 ALTERNATIVE 3--REPLACE I-405 DRAINAGE DITCH BRIDGES This alternative contemplated demolition of the existing I-405/13 bridges and raising of approximately 1/2 mile of I-405 as much as 10 feet from the present grade in an effort to provide vertical clearance necessary without de- pressing the Oakesdale vertical alignment. This alternative would be quite costly. In addition, the construction of new bridges would have a major impact on traffic sequencing and the scheduled widening of I-405. This alternative was discarded because of high cost and ma- jor impacts to I-405 freeway. ALTERNATIVE 4--NEW STRUCTURE EAST OF THE EXISTING P-1 BOX CULVERT This alternative would relocate the Oakesdale Avenue align- ment to the east of the existing P-i box culvert so that the roadway and channel would be parallel for most of the dis- tance between SW Grady and SW 16th Avenue. This location would avoid the existing 90-inch Metro sewer and would eliminate the need to alter I-405 vertical alignment because the Oakesdale Avenue roadway will be depressed to provide adequate clearance for Oakesdale traffic. Depressing of the roadway as it passes under I-405 will require that a pump station be installed to provide for drainage of several hundred feet of Oakesdale in a ,depressed section. However, sight distance and roadway geometrics are much improved over the other alternatives.. In addition, construction of this alternative is not constrained by traffic sequencing during widening of I-405. For these reasons this is the preferred alternative. se6016/013/2 PREFERRED ALTERNATIVE LOCATION DESCRIPTION The preferred alignment for Oakesdale Avenue lies immedi- ately east of the proposed P-1 Channel location and some 125 feet east of the existing I-405 pile-supported drainage ditch bridges. This alignment allows the P-1 Channel box Culvert beneath I-405 to be constructed as designed with no modifications. The preferred alignment of Oakesdale Avenue will intersect SW Grady Way approximately 120 feet east of the currently proposed Oakesdale Avenue/Grady Way intersec- tion. This will necessitate the redesign of Oakesdale Avenue north of Grady Way. The intersection angle of Grady Way and Oakesdale Avenue will be improved to 84 degrees by relocating the intersection. Oakesdale Avenue will tie into SW 16th Street about 80 feet east of the existing structure over the P-i Channel. A hori- zontal curve on the south end of Oakesdale Avenue alignment will provide an angle of intersection within WSDOT guide- lines of about 80 degrees. The horizontal alignment will consists of one tangent with a 700-foot radius curve as it approaches SW 16th Street. The vertical profile will essentially be a large sag vertical curve with maximum grades approaching 7 percent. The pre- ferred alignment will not impact the 90-inch Metro pipeline. PHYSICAL CONSTRAINTS The alignment of Oakesdale Avenue will be constrained on the west by the proposed P-1 Channel Box Culvert under I-405 and by the P-1 Channel itself. The alignment will also be con- strained by right-of-way on the east. The preferred align- ment requires aquisition of a small amount of right-of-way to be taken on the east side of the alignment. To allow the necessary vertical clearance (15 feet, 2 inch- es) for Oakesdale Avenue as it passes under existing I-405, excavation under the I-405 roadway will be required. The proposed Oakesdale Avenue, where it passes under the I-405 roadway, will be difficult to drain by gravity, since this depressed alignment will put the roadway elevation below the higher flow hydraulic gradients in the P-1 Channels . Thus, pumping will be required to discharge the water from the roadway in this area during some flooding conditions. Also, groundwater levels encountered during recent drilling along I-405 vary between elevation 4 . 0 and 10. 0 during summer months and may be higher during winter months. Therefore, it is likely that the pump station will be pumping ground- water continuously throughout the year in addition to flood water from the P-1 Channel. se6016/006/1 . PROJECT DESIGN STANDARDS Project design standards are developed through reference to the following documents : o Washington State Department of Transportation: Highway Design Manual, Standard Plans for Roads and Bridge Construction, Bridge Design Criteria, Highway Hydraulics Manual, and Local Agency Guidelines o American Association of State Highway and Trans- portation Officials : A Policy on Geometric Design of Highways and Streets and Standard Specifica- tions for Highway Bridges o Federal Highway Administration and Washington State Department of Transportation: Manual on Uniform Traffic Control Devices for Streets and Highways o Institute of Transportation Engineers: — Guidelines for Urban Major Street Design Based upon the above references , the following minimum de- sign standards would apply to this project. o Classification--Nonexpressway Principal Arterial o Superelevation--No superelevation will be used o Minimum radius--480 o Minimum grade--0 .5 percent o Maximum grade--7 percent o Minimum surfaced width--62 feet (curbline to curbline) o Desirable intersection angle--75° to 105° o Vertical curve lengths for stopping sight dis- tance--WSDOT standards o Median turning lane width--12 feet o Minimum walkway width--5 feet o Minimum bicycle lane width--5 feet se6016/006/2 o Desirable Design speed--40 miles per hour o Number of lanes--four through lanes (two north- bound, two southbound) plus left-hand turn lanes at each intersection o Lateral clearance between curb face and the clos- est part of any fixed object (excluding traffic control signs) --3 feet minimum o Bridge overcrossing (undercrossing of I-405) per WSDOT lag. - Minimum roadway width--24 feet (for two lanes) - Minimum vertical clearance: -- 16 feet, 6 inches (roadway) -- 8 feet, zero inches (walkway) o Minimum right-of-way width--70 feet o Minimum nonmotorized access width (pedestrians, horses, and bicyclists) --10 feet, zero inches o Taper lengths: . .. . , .. .. , .. . L = (w x s2) : 60 Where L = taper length in feet w = change in road width in feet s = design speed in miles per hour o Minimum cross slope (normal crown) --2 percent o Maximum cut and fill slopes--2: 1 (subject to geo- technical information) se6016/006/3 PROJECT DESIGN DEVIATIONS Because 'of physical constraints on the horizontal alignment and vertical profile, several deviations from design stan- dards are required. The following describes the required design deviation and justification. VERTICAL CLEARANCE The WSDOT. Local Agency Guidelines requires a minimum ver- tical clearance of 16 feet 6 inches. However, this is con- tradicted somewhat by AASHTO (a policy on geometric design of highways and streets) which recommends that the minimum vertical clearance be determined by adding 1"-0" to the legal height plus allowance for uture pavement overlay. Thus, for Oakesdale the minimum vertical clearance was PY. determined to be 15 '-2" (14 '-0" legal height + 1 '-0" clear + 2" future pavement overlay) . DESIGN SPEED In general, . the desirable design speed for a principal arte- rial should be 40 miles per hour or higher for a non-lighted arterial. However, due to physical constraints and the fre- quency of at-grade intersections (only 800 feet apart) in this area, lower design speed alternatives were evaluated. Also, roadway lighting will be provided. The ef'fe•ct of 'two different design approaches were analyzed. The first ap- proach involved determining the maximum permissible design speed for which the sag vertical curve would provide the required minimum vertical clearance. This design speed (35 mph) was then used for the other vertical curves on the project. The second approach involved decreasing the ver- tical alignment design speed to the assumed posted speed of 25 mph in order to reduce the sag vertical curve length (while maintaining stopping sight distance to within head- light governing criteria) and be able to reduce the steep- ness of the roadway grades. After comparing the resulting conceptual profiles, the 35 mph design speed profile was ' selected because it provided for uniform design speed and because the 25 mph alternate provided negligible benefits from grade reduction. PROJECT FEATURES FINAL ROADWAY Oakesdale Avenue between SW Grady Way and SW 16th Street will be a five-lane roadway 58 feet wide and will include se6016/014/1 two northbound and southbound lanes in addition to a con- tinuous two-way left turn lane. The curb and, gutter will be used along both sides of Oakesdale Avenue. Sidewalks will not be provided immediately adjacent to Oakesdale Avenue but will be provided west of the P-1 Channel. Oakesdale Avenue will be illuminated. PEDESTRIAN WALK/BIKE PATH/EQUESTRIAN TRAIL A combined pedestrian walk, bikepath, and equestrian trail will, be provided west of the P-i Channel. The pedestrian walkway and bikepath will be 6 feet wide and paved with asphalt concrete pavement. The equestrian trail will be 10 feet wide and immediately adjacent. to the pedestrian walkway. 2 feet shoulders will be provided either side of the combined walk/path/trail. The pedestrian walkway/bikepath//equestrian trail will pass beneath the existing 1-405 drainage ditch bridges between bents 2 and 3 . The. walkway/path/trail will begin at SW 16th Street opposite the northeast entrance to Longacres race track and will end at SW Grady Way approximately 125 feet west of the Grady/Oakesdale intersection. LIND STREET BYPASS Widening of I-405 (designed by WSDOT) will require that the Lind Street overpass, approximately 1/2 mile east of Oakes- dale Avenue, be demolished and reconstructed. The construc- tion work is scheduled for fall/winter 1989 . In an effort to maintain north-south access across I-405, the proposed Oakesdale Avenue will provide a detour for the Lind Avenue traffic during this time. The Oakesdale overcrossing and roadway must be constructed prior to the demolition of the Lind Avenue bridge. The detour may consist of an interim two-lane roadway or the final Oakesdale 'Avenue roadway de- pending on the construction schedule of Oakesdale Avenue. RETAINING WALL ALONG EAST SIDE OF P-1 CHANNEL An extensive retaining wall of up to 20 feet high and ap- proximately 430 feet long is required along the west side of Oakesdale Avenue and will be located between the three box culverts as shown on the attached drawing. The retaining wall is necessary to separate the channel and Oakesdale road- way due to the proximity of the P-1 Channel and to minimize flooding potential of Oakesdale Avenue. A means to reduce the infiltration of normal stream channel flow and flood water into the underdrain system and roadway of Oakesdale Avenue is also required. Two alternatives to reduce seepage will be considered during final design; a cutoff wall built se6016/014/2 integral with the retaining wall to provide a seepage bar- rier and lining the channel with a geomembrane to increase the percolation path for seepage and thus reduce flows. A steel or concrete "bin-type" retaining wall and a conven- tional cantilevered, reinforced concrete retaining wall were evaluated using of preliminary information. However the bin wall approach to channel separation has the following limitations : o The space required to accommodate a bin-type wall infringed on. the proposed Oakesdale roadway alignment o A reliable method to prevent seepage through the bin wall could be difficult to develop o The connection between the cut-off wall and bin wall may also be unreliable in seepage control A conventional cantilevered, reinforced concrete retaining wall is proposed because of the space restrictions of the proposed alignment. The proposed Oakesdale roadway align- ment was selected to minimize additional roadway acquisition and to maintain a straight alignment. Also a concrete re- taining wall will control the seepage and flooding problems. The top of wall elevation will vary according to the roadway vertical profile and flood criteria. The minimum wall ele- vation will be 14. 0 feet which will provide 2 feet of free- board above the 100-year flood (elevation 12. 0 feet) . Also a minimum of 3 . 5 feet of wall above the roadway will be pro- vided as a traffic and pedestrian barrier. Trees and vege- tation will be planted along the entire length of the wall to provide shade for the P-1 Channel for fish habitat enhancement. Design criteria for the concrete retaining wall and seepage cutoff system will be developed on the basis of the geotech- nical explorations performed in the area of the proposed wall system. Settlement and bearing capacity are antici- pated to be a major design consideration for the retaining wall system. Foundation size will be developed to meet geo- technical design parameters obtained from the site specific exploration. Unreinforced expansion joints with waterstops • will be located approximately every 30 feet to accommodate the relative wall settlements. Waterstops will also be re- quired in the joints between the box culverts and retaining walls to prevent P-1 Channel flood water seepage into Oakes- dale Avenue. se6016/014/3 INTERSECTIONS SW Grady/Oakesdale Avenue Oakesdale Avenue will intersect SW Grady at an 84-degree angle. Oakesdale Avenue north of SW Grady Way will be re- designed by BRH Engineers to match the alignment of the preferred alternative. A northbound Oakesdale Avenue to westbound Grady Way left-turn bay will be designed to accommodate vehicle storage. SW 16th/Oakesdale Avenue Constraints such as availability of right-of-way and the location of new P-1 Channel require an intersection angle between S.W. 16th Street and Oakesdale Avenue of approxi- mately 80 degrees. A southbound Oakesdale Avenue to east- bound S.W. 16th Street left-turn bay will be designed. PAVEMENT DESIGN The pavement design will be based upon the following assumptions: o Thirty thousand ADT in year 2000 (Reference Valley Transportation Improvements Program, CH2M HILL, July 1986) o Ten percent trucks (exclusive of pickups and panels) o "R" value--Geotechnical input is required The pavement thickness will be determined using the WSDOT flexible pavement design procedures. UTILITIES DRAINAGE OF I-405 ROADWAY Current I-405 widening roadway drainage plans call for a sedimentation pond to be located on the south side of I-405 near the toe of the roadway fill slope. A pipe carries water from the sedimentation pond to the existing P-1 drain- "'' age ditch. The proposed alignment for Oakesdale 'will re= quire that the sedimentation pond be relocated. slightly east of its designated location. The discharge pipe from the sediment pond must be routed under Oakesdale Avenue and through the P-1 Channel/roadway retaining wall structure before discharging into the P-1 Channel. Since the P-1 Chan- nel, separation structure, and Oakesdale alignments are well established it would appear that the discharge piping design se6016/014/4 and sediment pond relocation should be incorporated into the I-405 widening contract. DRAINAGE AND PUMPING REQUIREMENTS Drainage considerations for the project fall into two cate- gories. The first is surface drainage from offsite sources such as existing roadside ditches for I-405, SW 16th Avenue, and SW Grady Way. The second area of concern is the direct surface runoff and groundwater drainage associated with the depressed roadway area. All surface runoff will be routed to peripheral drains. Everything downslope from these points fall into the "bath- tub" area. The remainder of the project area will require provisions for removing surface water as well as providing subgrade drainage for Oakesdale Avenue. The low spot on Oakesdale Avenue will be approximately ele- vation 5. 0. It is desirable to drain the subgrade of the road down to at least elevation 2. 0. Telephone communica- tions with King County Maintenance personnel at the Black River pump station indicate that water levels in the winter are normally elevation 2.5 to 3 .5. Maximum levels can reach as high as 7. 0. Assuming coincident storm events , it is unlikely that the Oakesdale depressed roadway can be drained by gravity to the P-1 Channel. As a result, it is recommended that a combination subsurface/ surface drainage system with a pump station to serve the de- pressed roadway area be included in the project. A subsur- face storage tank may be desirable to minimize pump cycling. The storage tank and pump size will be determined as a re- sult of ground water and surface runoff quantity estimates as the design criteria is further established during final design. WATER AND SEWER UTILITIES Both water and sewer utilities will be routed under Oakes- dale Avenue and will connect to existing underground utili- ties located in SW Grady Way. A 16-inch-diameter sanitary sewer is currently being constructed down Oakesdale Avenue north of SW Grady Way. The city of Renton has indicated that this line should be continued southward where it will connect to an existing 24-inch-diameter sewer located on the north side of SW 16th Avenue. I-405 widening plans call for a 24-inch-diameter casing (to encase the 16-inch-diameter sanitary sewer) to be located adjacent to the east side of the P-1 box culvert. This location will b,e _compared with. the alternate location of routing the sewer underneath Oakes- dale Roadway through the overcrossing structure during final design. se6016/014/5 A 12-inch-diameter water main will be extended south from SW Grady Way to SW .16th Avenue. The routing of this water main can be under the existing drainage ditch bridges or along the Oakesdale Roadway alignment. Currently, discus- sions with the Renton Fire Marshal are being held to access the need for fire protection, under the new overcrossing structure. Fire hydrants will be located at approximately 300-foot intervals along Oakesdale. GEOTECHNICAL CONSIDERATIONS Geotechnical considerations for the project consist of a determination of subsurface conditions along the proposed Oakesdale Avenue alignment and development of geotechnical recommendations relative to the design of Oakesdale Avenue, the overcrossing structure for 1-405, and the P-i Channel. On the basis of existing geotechnical explorations near the site, subsurface conditions, in general, consist of loose to medium dense sand with varying amounts of silt and gravel, overlying dense to very dense sand and gravel. These mate- rials represent lenses and layers of alluvial materials de- posited by the Green, Duwamish, Cedar, and Black Rivers in recent (the last 5, 000 to 6, 000 years) geologic times. The upper sands contain sporadic lenses of silt and peat in ad- dition to loose sand zones which present difficult founda- tion conditions for structures and roadways encountering these deposits. The lower sand and gravel presents a good bearing zone for deep foundations considered for the proj- ect. This unit was generally encountered below an elevation of -15. Both upper and lower materials are considered to be very pervious to groundwater flow. Groundwater was found to be unconfined in pervious subsur- face materials and was encountered at elevations ranging from 10 to zero. Major geotechnical design issues that will be addressed dur- ing development of PS&E documents for the project include: o Design of a soldier pile foundation and retaining wall system to support I-405 under long-term oper- ating loads and short-term construction loads as a result of the P-1 Box Culvert construction adja- cent to Oakesdale Avenue at I-405. • o Design of an underdrain system for Oakesdale Avenue to collect surface water and groundwater from the roadway section. o Provide recommendations for the design of retain- ing structures along Oakesdale Avenue which serve se6016/014/6 to minimize right of way acquisition for Oakesdale and provide support for the roadway to facilitate adjacent construction of the P-i Channel. o Design a seepage control system between the P-1 Channel and Oakesdale Avenue to minimize in- filtration of channel water into the underdrain system for Oakesdale Avenue. A more detailed description of these design issues is pre- sented below. It should be noted that design parameters discussed in this section of the memorandum are preliminary and were developed from existing geotechnical data for the Oakesdale site vicinity. Final design - recommendations must be developed from site specific subsurface explorations and may vary from the preliminary recommendations presented herein. I-405 OVERCROSSING STRUCTURE The proposed Oakesdale Avenue alignment requires that the roadway pass under I-405 . This will consequently require a permanent lateral support system for the soils and will re- quire a bridge for I-405 traffic. A cross section of the Oakesdale Avenue roadway and the I-405 overcrossing is shown on an attached sketch. The present concept requires the use of deep pile foundations to support the vertical and lateral loads imposed on this structure. Two foundation types were considered in the conceptual designs: o Driven piles (steel cylinder piles) o Drilled piers Soils borings have identified the presence of a relatively high water table (El. 10 to El. zero) . The soil types , as discussed previously, consist of lenses of relatively clean sand with varying amounts of peat, silt, and gravel. Heav- ing and caving of the sand into borings and excavations is a concern during the construction .and thus the preferred foundation type is driven piles. The primary concern iden- tified regarding the use of drilled piers is that of obtain- ing proper foundation support and removal of loose soils to resist future settlement. Driven piles can effectively overcome this problem by driving to the required resistance. Jetting and/or predrilling may be required if necessary to reach the minimum required tip elevation in the dense to very dense sand and gravel; Preliminary calculations have been made assuming use of 30 inch diameter steel cylinder piles for support. Smaller diameter piles may be found to be adequate and must be re- fined in the final design. The pile spacing will likely range from 5- to 8-foot centers and must be refined in the se6016/014/7 final design. The preliminary calculations, assuming use of 30-inch-diameter piles, suggests tip elevations should be located at about El. -30 in the dense to very dense sand_ and gravel. The piles will be subjected to both vertical and lateral loading conditions. The assumed lateral soil loads to be used on the preliminary design and sizing of the piles are shown in an attached figure. This figure also shows the space relationship to the P-1 box culvert. The P-i. box culvert excavation will require removal of soil down to about El -4. 5 adjacent to the Oakesdale Avenue undercrossing and will thus result in the removal of the lateral soil sup- port along the west side of the Oakesdale Avenue under- crossing structure. The soil pressure diagram for use in preliminary design and sizing for this excavation case is also shown in the attached figure. The final designs will be based on load/deflection analyses of laterally loaded piles taking into account the soil/structure interactions . Temporary and permanent dewatering will be required to provide the necessary stability for the proposed structures . Construction dewatering is expected to consist of wells or well points, trenches, and sumps as required to keep all excavations free of water. The construction dewatering should be sufficient to lower the water table so that hydro- static loads do not develop on structures. Permanent designs be developed assuming the groundwater level adjacent to structures is equal to the 100-year flood elevations. Final uplift and lateral hydrostatic pressure diagrams should be developed based on the characteristics and layout of the drainage systems selected in the final design. OAKESDALE AVENUE Based on the proposed alignment for Oakesdale Avenue, fin- ished roadway elevations vary from near existing surface elevations of 17. 6 and 18 . 0 at SW 16th Street and SW Grady Way, respectively, to a low of approximately 5. 0 at the I-405 overcrossing structure. This establishes the roadway in the upper loose to medium dense sand material described previously in this section. Subgrade CBR values used for the design of the Oakesdale Avenue pavement are anticipated to be in the range of 9 to 15 for these materials. Loose or soft zones or areas of organic-rich materials will be re- quired to be removed from the influence zone of the pavement section. The underdrain system is anticipated to consist of a gravel blanket in the range of 1 to 2 feet thick which collects groundwater and routes it to perforated underdrain pipes se6016/014/8 buried in trenches beneath the blanket. The underdrain pipes will convey collected groundwater to the pump station for removal from the site. The size and spacing of the pipes will depend on the amount of groundwater and seepage water from the P-1 Channel and will be determined during preliminary design. A geotextile may be required to provide separation between the underdrain gravel and the native sub- grade materials, depending on the gradations and compatibil- ity of the two materials. Retaining walls along the east side of. the proposed align- ment will be required in some areas to. minimize right-of-way • takes on adjacent property. In general, these walls will be less than 8 feet in height and rockery walls are anticipated for use in these areas. Construction slopes and wall drain- age are key issues to be considered for these walls. As with the Oakesdale pavement section, loose, soft, or organic-rich soils in the foundation subgrade will be re- placed with foundation gravel. Retaining walls along the west side of Oakesdale Avenue are considered to be a part of the P-1 Channel design and are discussed below. P-1 CHANNEL The proposed P-1 Channel conveys creek flow and stormwater across the site in a channel running parallel (approxi- mately) to the proposed Oakesdale alignment. Because of the close proximity of the channel to Oakesdale Avenue (approxi- mately 15 feet from edge of roadway to edge of channel at the I-405 undercrossing) and the difference in elevation between their finished grades, a major retaining wall is required to separate the channel from Oakesdale Avenue. Similar to Oakesdale Avenue, the P-i Channel will be estab- lished in the loose to medium dense sand zone described ear- lier in this section. Allowable bearing pressures are anticipated to be in the range of 2, 000 to 2, 500 psf for foundations established in this zone. With these pressures, total settlements for the structures are anticipated to be less than 1 inch and should occur immediately upon load application. Differential settlement along the structure may present a problem where variable soil conditions are encountered across the foundation subgrade. Overexcavation of loose, soft, or organic-rich materials in conjunction with construction joints and water stops incorporated into the retaining walls will help to minimize this problem. Construction dewatering and wall drainage are key issues which need to be addressed for this retaining wall system. Seepage between the P-1 Channel will need to be controlled to minimize the quantity of water pumped by the Oakesdale se6016/014/9 underdrain system. Two alternatives will be evaluated: o A sheetpile cutoff wall extending beneath the cantilevered, reinforced concrete retaining wall. o A seepage cutoff blanket extending beneath the P-1 Channel and tied into the P-1 Channel box culverts. Neither system will be completely effective in eliminating seepage between the channel and roadway and therefore some seepage volume will need to be removed by the underdrain and pumping system. Sheetpiles are anticipated to extend to the top of the dense sand and gravel layer (approximate El. -15) . The length of this wall is approximately 400 feet and would need to be continuous across I-405 to provide effective seepage con- trol. During final design, the possibility of using the proposed sheet pile wall for the box culvert construction jointly with the seepage control system along the separation structure will be reviewed. Driving sheetpiles through the I-405 embankment may prove difficult however due that crosses I-405 to the cobbley nature of the embankment fill. Interlocking integrity of the sheetpiles driven through this zone would be a question. The seepage cutoff blanket is anticipated to be a geomem- brane made of polyvinyl chloride (PVC) or High Density Poly- ethylene (HDPE) and would extend beneath the P-1 Channel, under the retaining structure between Oakesdale and the channel and up the construction slope for the retaining structures to the roadway elevation. This geomembrane would line the channel bottom for approximately 250 feet and would seal to the P-1 box culvert that crosses I-405 to provide effective seepage control. A protective sand layer 4 to 6 inches thick is anticipated above and below the geomembrane. BRIDGE OVERCROSSING BRIDGE DESIGN CONSIDERATIONS The bridge design concept presented in this technical memo- randum is based upon the following design considerations : o Oakesdale Avenue is to be constructed under exist- ing I-405 while maintaining traffic on I-405. o A 64 '-8" foot clear distance will be required be- tween wall faces along Oakesdale Avenue, 62 feet curbline to curbline (two 12-foot and two 11-foot se6016/014/10 • through lanes with a 12-foot left-turn lane plus , 2 ' shy distance. each side of roadway) . o Bridge width will accommodate the future 108-foot I-405 widening (bridge width to accomodate 25 degrees skew and multiple 4 feet precast bridge deck panels will be 128 '-0") . o The bridge will maintain existing I-405 roadway profile elevations . o The bridge design will be functional, economical, and incorporate the use of timesaving construction techniques and materials. BRIDGE CONCEPT Based upon the above bridge design considex'a.tions,,.,the., .., structural components of the bridge concept are as follows: o Standard WSDOT 26-inch precast-prestressed slab (deck panel) with a permanent topping consisting of a cast-in-place reinforced concrete deck slab and a 1}-inch Latex Modified Concrete (LMC) over- lay. The precast deck panels will be supported on elastomeric bearing pads. o Cast-in-place (CIP) reinforced concrete pile cap with an integral approach slab corbel. o WSDOT standard 25-foot minimum width CIP approach slab as required for skews under 30° . o Soldier pile wall consisting of close-ended steel pipe piles, temporary treated timber lagging, and a permanent CIP concrete facia wall. The timber lagging will be connected to the pipe piles using structural tees and the concrete facia walls con- nected to the structural tees with welded headed anchor studs (HAS) . o A CIP traffic barrier will be keyed into the con- crete facia walls . BRIDGE DESIGN CRITERIA Bridge Component Design Requirements Precast-Prestressed Deck Panels o Single span distance of approximately 69 feet center to center of bearing. • se6016/014/11 o Apply appropriate design loadings as listed • below. o Resist axial compression/tension reaction . from soldier pile wall. o Composite action with CIP deck slab for long- term deflections and BL-2 truck loading. o Reinforced CIP concrete deck slab to limit reflective cracking due to differential settlement. o Unreinforced, nonstructural latex modified concrete overlay. o Temporary topping of gravel and 3-inch thickness AC pavement. Permanent CIP con- crete deck slab and LMC to be placed when roadways are closed for scheduled widening. o Allow a 50 percent overstress for temporary construction load cases . o Deck panels will be placed parallel to I-405 centerline and the end of the deck panels skewed coincident to the centerline of Oakes- dale Avenue. o Deck panels will be WSDOT standard 26-inch precast prestressed slabs as shown on the WSDOT BDM Volume 2 Design Aid 6-230. o The deck panels will be post-tensioned trans- versely to limit differential movements and the associated cracking, and to transfer superstructure loadings between deck panels. Approach Slabs o Approach slabs to be placed when roadways are closed for scheduled widening. o Apply appropriate design loadings as listed below. o WSDOT standard bridge approach slab will be as shown on Sheet 390 of Contract Plans L6166 HOV Project. • se6016/014/12 Pile Caps o CIP pile caps will be placed parallel to Oakesdale Avenue centerline. o Pile caps will be designed for the superstructure gravity reactions as well as the transfer of the earthquake design loading listed below from the superstructure to the substructure. o Lateral reactions from the soldier pile sys- tem will be transmitted by the pile cap to the deck panels. o Pile cap dimensions will be based in part on providing adequate pile cover and embedment depth, torsional resistance to the super- structure reaction eccentricity, and section properties for flexural bending and hori- zontal shear. Soldier Piles o The steel pipe piles will be designed for the superstructure, pile cap, and approach slab loadings plus the lateral soil loads from active soil pressure and traffic surcharge. For temporary construction load cases, an allowable overstress of 50 percent is acceptable. o See GEOTECHNICAL DESIGN CRITERIA for addi- tional design loadings . o The treated timber lagging is considered tem- porary and will therefore not be considered as providing structural strength in the design of the CIP concrete facia panel. The dead load of the facia panel will be supported on a separate concrete footing rather than hung onto the pipe piles. The facia panel will be designed as a structural wall spanning in one-way action between soldier piles . Specifications The following publications will be used in conjunction with these criteria in developing PS&E for the project: se6016/014/13 Design Specifications o AASHTO "Standard Specifications for Highway Bridges, " 13th edition, 1983, plus subsequent interim specifications. o WSDOT "Bridge Design Manual, " Volumes 1 and 2, as revised to date. o WSDOT "Standard Plans for Road, Bridge, and Municipal Construction, " as revised to date. Construction Specifications o The latest edition of "Standard Specifications for Road, Bridge, and Municipal Construction" , Washington. o WSDOT "Standard Special Provisions and Supplemental Standard Specifications, " as revised to date. Design Loads Dead Load Calculated weight of the structure including weight of a 1-1/2 inch latex modified overlay (18 psf) . Live Load o AASHTO HS20-44, BL-2 truck loading and alter- nate military loading. o Multiple lane reduction factors will be used for both superstructure and substructure design. Impact Impact will be added to the live load in accordance with AASHTO Section 3 . 8. 2. Impact will be applied to the superstructure only. Seismic Forces The bridge will be designed in accordance with AASHTO "Guide Specifications for Seismic Design of Highway Bridges" for Seismic Performance Category (SPC) A. se6016/014/14 Thermal Forces and Distortions Design for a base installation temperature of between 40 to 60°F. The temperature range to be used to deter- mine deformations and stresses is as follows: Steel Temperature range from zero to 120°F Concrete Temperature rise equals +30°F Temperature fall equals -40°F Longitudinal Forces Longitudinal force from live load will be computed in accordance with AASHTO Section 3 . 9, using HS20-44 load- ing. Shear resistance from elastomeric bearings shall be based on the WSDOT BDM and manufacturer ' s recommendations. Earth Forces See GEOTECHNICAL DESIGN CRITERIA. Wind Loads Wind loads will be applied in accordance with AASHTO Section 3 .15. Utilities There are no utilities presently crossing the future bridge location that would significantly affect the structural design. Material Properties Concrete o Concrete 28-day compressive design strength: CIP deck slab, pile cap, barriers and facia wall f'c = 4,000 psi CIP fascia wall footing f'c = 3,000 psi Precast prestressed deck panels f'c = 6,000 psi (f'ci as required) o Allowable stress at initial prestress: Compression = 0. 60 f'ci Tension = 3 x square root of f'ci se6016/014/15 . o Allowable stress at service loads: Compression = 0. 40 f' c Tension = zero psi Reinforcing Steel o Nonprestressed reinforcing will be ASTM A615, Grade 60. o CIP deck slab top mat of reinforcing will be epoxy coated. Prestressing Steel o Pretensioning steel will be 1/2-inch- . diameter, 7-wire, low relaxation strand con- forming to ASTM A416, Grade 270 , Supplement 1 . o Temporary jacking stress before loss due to creep and shrinkage will be 0 . 75 f' s . o The total losses in pretensioning for the deck panels will be taken as 45 ksi per WSDOT BDM Volume 1 , Section 6. 2 . 3C (a) . Structural Steel Where high yield strength is not required, structural steel will be ASTM A36. Steel Pipe Piling Pipe piles will be ASTM A252, Grade 2 , with a yield strength of 35 , 000 psi. This criterion is subject to review for compliance with the GEOTECHNICAL DESIGN CRITERIA. se6016/014/16 SUMMARY. COMPARISON OF OAKESDALE PROJECT ALTERNATIVES Alternative New Structure Evaluation Underpin 1-405 Replace I-405 East of Exist P-1 Factors Lind Ave Detour Bridges Bridges Box Culvert Rating: 0-5 (5 = "Best") A PROVIDES FOR BEST OAKESDALE ALIGN- MENT AND INTER- SECTION GEOMETRY A.1 Between Grady and 1 2 4 5 16th Alignment dictated Minor improvement Improves vertical, Improves both ver- by Ex I-405 piles to vertical but not horizontal tical and hori- alignment zontal alignment A.2 North of Grady Way 1 1 1 5 Alignment dictated Required coordina- by P-1 Channel tion to construc- tion contracts in • force (both- Grady Way and Oakesdale) A.3 South of Grady Way 1 1 1 5 Alignment dictated Requires 80(+) de- by P-1 Channel gree skew se6016/009/1 Alternative New Structure Evaluation Underpin I-405 Replace I-405 East of Exist P-1 Factors Lind Ave Detour Bridges Bridges Box Culvert B MAXIMIZED SAFETY 1 2 4 5 ALONG NEW Poor sight distance Intersection geome- With lighting of OAKESDALE and difficult to try constrained roadway geometrics provide for non- meets or exceeds motorized traffic arterial safety requirements C BEST ACCOMMODATES 1 2 4 5 PROVISION OF May require double More left-turn TRAFFIC SERVICES left turns due to storage lane and short approach can separate peds, distance horses, etc. D BEST AVOIDS IMPACT 2 1 3 5 TO METRO SEWER Requires substand- Requires structural No impact TRUNK and vertical clear- protection ance or structural cover E MAXIMIZE USE OF 5 5 5 4 EXISTING P-1 BOX Use as designed Requires some CULVERT rechanneling se6016/009/2 Alternative New Structure Evaluation Underpin I-405 Replace I-405 East of Exist P-1 Factors Lind Ave Detour Bridges Bridges Box Culvert F MAXIMIZE USE OF AVAILABLE SCS FUNDS FOR P-1 CHANNEL F.1 Under I-405 5 5 3 5 Use as designed SCS only pays for Uses P-1 boxes as in place channel originally planned costs F.2 Under SW 16th 5 5 5 5 Use as designed Shortens box length and saves SCS some money G MINIMIZES 3 1 5 4 REQUIREMENTS FOR Groundwater and Profile raised to Primarily pavement PUMP STATION surface drainage minimize flood drainage; there- disposal required plain impacts fore, less pump requirements than for other . alternatives 1i MINIMIZES RIGHT-OF- 5 5 5 _ 4 . WAY REQUIREMENTS R/W in City control Requires walls PSPL R/W needed. along I-405 Some parking spaces - need replacement - se6016/009/3 Alternative New Structure Evaluation Underpin I-405 Replace I-405 East of Exist P-1 Factors Lind Ave Detour Bridges Bridges Box Culvert I MINIMIZES PERMIT 4 2 3 5 REQUIREMENTS Could work under Fisheries and SCS City of acquire Requires noncon- slight modifica- are critical, permits in name of troversial permits tions to permits in Temporary routing WSDOT hand of creek required and aggressive dewatering J MINIMIZES IMPACT 5 3 1 5 TO WSDOT CONTRACT Date not affected Requires addendum Breaks out 2,000 ft Supports Oct. 24, AWARD DATE for piles. Sepa- of I-405 WSDOT 1987, ad date rate contract for design for separate actual underpinning ad and award in tied to WSDOT traf- 1988 fic stages . K COMPLEMENTS WSDOT 5 4 3 5 TRAFFIC STAGING Accommodates Lind Construction tied Requires temporary Enhances opportu- PLANS Avenue bridge de- to and dictated by pile bridge or fill nity to close Lind tour as originally WSDOT traffic widening. Once in Ave. bridge for planned stages place work proceeds demolition other- per WSDOT traffic wise compatible stages with WSDOT traffic stages se6016/009/4 Alternative New Structure Evaluation - Underpin I-405 Replace I-405 East of Exist P-1 Factors Lind Ave Detour - Bridges Bridges Box Culvert L MINIMIZES COMPLI- 2 1 2 4 CATIONS OF GROUND- Project within Extensive work for Foundation work in Site removed from WATER IN flood waterway existing piles and floodway required P-1 floodway CONSTRUCTION new work for under- pinning in summer waterway and P-1 floodway M OPENS OAKESDALE TO 3 1 2 4 PUBLIC EARLIEST P-1 box requires 1991 plus. Tied up 1991 plus. P-1 box 1989. With piles staging of the P-1 box completion still controls as and hollow core roadway. Full does WSDOT traffic panels in place, opening tied to stages Oakesdale opening completion of P-1 in City control. box on I-405 and SW WSDOT motivated due 16th (1991 plus) to use of road for Lind detour N BEST COMPLEMENTS 5 2 1 4 CITY CA PROCESS Within City CA Exceeds CA FOR CONSTRUCTION authorization authority - 0 Minimizes long- 1 1 3 - 4. term liability I-405 pile strength Multiple agencies Multiple contrac- of suspect. If a and contractors tors. Move of failure, could be I-405 altered re- tied to roadway taining walls - se6016/009/5 Alternative New Structure Evaluation Underpin I-405 Replace I-405 East of Exist P-1 Factors Lind Ave Detour Bridges Bridges Box Culvert P PROJECT COSTS P.1 Captures WSDOT 4 1 1 3 funds ($175,000 for Lind) No Lind Avenue ($175,000 Lind detour to remain contribution Avenue-also poten- after I-405 tially tunnel complete earthwork, surfacing) P.2 Minimizes City 4 2 0 4 up-front outlay Assumes SCS funding At city costs, re- At city costs, re- Avoids Metro sewer for .P-1 box that quires pump sta- quires modifying lines, maximizes support road tion, protection of 1-405 profile- SCS funding capi- Metro sewer line, walls, temp. road- talizes on WSDOT and extensive pile ways, pump station, funded project com- foundation system. two new bridges, ponents of earth- Requires extensive protection of Metro work and surfacing dewatering sewer P.3 Project costs-- 3 1 3 4 minimizes long- Pump station costs Pump station term City main- and pavement re- tenance costs pairs due to soft _ ground conditions TOTAL SCORE: 66 48 60 - 94 • se6016/009/6 - FILE NAME - OAKBAR-1 PLANNING AND DESIGN SCHEDULE , CITY OF RENTON 07-Jul-B7 = RUN DATE DAKESDALE AVENUE AND 1405 DVERCRDSSING 11:48 AM = RUN TIME Week Beginning - 1987 _ 1987 June___ July August ____September___ ____October November ____December-__ < 15 22 29 6 13 20 27 3 10 17 24 31 7 14 21 28 5 12 19 26 2 9 16 23 30 7 14 21 2B Week Number Activity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 IB 19 20 21 22 23 24 25 26 27 28 29 ! ! 1 I i ! I 1 ! ! I ! ! I ! 1 ' PROJECT MANAGEMENT XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXIXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXIXXXIXXXXXIXXXXXXXIXXXXXXXXXIXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXIXXXXXIXXXXXX PROGRESS REPORTS X 1 I I '___ ,--_-I I I 1 I 1 1 ----1 1 -- I-- -•-- - -- 1 ---,---- ---- ____ ____ ____ ____ ____IXXIX, 1 - _- --_- -_-- -- - --- --_ ___ ____ QUALITY CONTROL/QUALITY ASSURANCE 1 1 ---• -'! : I 1 1 ! 1 ! I 1 1 1 1- -I - -I----1---- - -- - -- - - - - - SUBSURFACE INVESTIGATION & LAB ANALYSIS 1____I____XXXXXXXXXXXIIIIIIIIXIXXXXXXXXXXXXXXI I 1 1 ___ ____ ____ ____I_--- , 1 1 1 1 1 -- ---- ---- ----FOUNDATION REPORT - 1405 DVERCRDSSING 1 I I 1 ___1 PPPPPI IPreliminary)I____,____i FFFFFI____, __,_ --,----,_-__,____I__ I ; I___ ---I____I_--_I ---_ - ---- ---- ---- - ---- ---- - , 1 I 1 ! 1 I I_ 1 I ?Final Report I____,____,_ I I I----I----I----I-- '--- --- 1-- - FOUNDATION REPORT - DAKESDALE AVENUE I____,---- ----,---- __,.____I __'____,____,__—PPPPPI____FFFFFI____,____,_- 1 _ 1 --I _ I----____I -I---- --_ I___ -"-- "-" ---- „----I----'----'----I----'----'----'----1 ---'----'----'----I-- -1----I____:--- -- - _I____I____I----I- SURVEY AND MAPPING , XXXIXXXXXIXIXIXI 1 I 1 1 I 1- 1 1 1 1 1 — 1 -1 --'--- , --- - ,- -, - - - 1111 11111111 CONCEPTUAL LAYOUT XIIIXXIII%:____I 1 1 1 , ___' 1 1 1 --- 1---- ---- ---- , , I 1 ! I_---'---'----'----'----'----'_-- 1----'____1_---I --I----I -----I----1----1----I----1----1----1---- --- ---- DESIGN CRITERIA REPORT 1 IXXXIXI I 1 1 I ' 11111 I 1 I 1 1 I ----1 1 1--- 1 - -- -'---- 1111 ---- ---- ---- ---- ----RIGHT ---- OF WAY DESCRIPTIONS 1____1----'----'----XXXXIl----'----'----1----'----'----'----'----'----'----'-- 1----1----1----:----1--- ---1--- _1____1____:____1_--- 501 PSIE 1405 DVERCRDSSING 1 _-,---IXXIXIIIXII 1___ 1 I 1 1 1 1 11__--1 1 1 --- ---- -- 1 ---1 -- -- 1 1 --- ---- 1002 PS&E 1405 OVERCROSSIN6 I 1 1 1_-- XXXIXXXXXXXXXXXIXXXXI 1 1 I 1 ' 111 11 1 --,---- - - 1 --,-- - - --1 1 --- 1 I 1 I 1 1 1 1----'----'----' ---' ---'-- 1 ----1----1----,- --1----1- --1----1 - 1 -1 - -- - - BID ADV. 1405 DVERCRDSSING 1 1 I 1 1 XI I XI IX X XX IIXX I X XIIII 1 ---I 1 ,- 1 -�---- II X 95Z PRE DAKESDALE AVENUE I XIXXXXXXXIXIXXXXXXXXXXXIXXXIXXXXXXXXXXXIXIXIIIXXXII___ XXXXIX1XXXI 1 • ----1- - --1 --1 ---1- - - --1 -- ;- - 1•- -, - -; -' -- 100X PS&E DAKESDALE AVENUE 1 1 I 1 1 1 1 1 I :____1____ _ _ I X XI____I----' ___I__ 1---- ---- --- --- ---- ----'---_, 1 1 I 1 1- 1 1 I 1 IIXX ' BID ADV. DAKESDALE AVENUE , I I I,XX _ X X - I XX, ,---- --- ---- ---- ---- ---- AGENCY REVIEWS & OTHER ACTIVITIES 1 I 1 I ,--- 1 '- , , -- 1 I---- � �S X' z _ ' 1 1 ! 1 1 1 1 1 1 I- I I 1 1 1 1 I 1 - I I -'- -' - CITY OF RENTDN - NOTICE TO PROCEED I I 1 I I 1 I 1 I ' I 1 1 - - ' 1 -, - - - - - ----CI - -- TY OF RENTON - 1405 DVERCRDSSING ! _,___-,-__-,_---,____XXXXII____,----,--_ IXXIXI - - - - I ---- ----' - 1 , 1---- ---- --- ---- ---- ---- I , • , 1 , -1- - - - - 1 - 1 - 1 ,--- �- -�- -,- - �- -� - - --- CITY OF RENTON - DAKESDALE AVENUE 1 1 I -- -'- -"- --' ' -- ---- -- - - -- ---- - -'-- - 1 1 I I X I - ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- - CITY OF RENTON - R/M ACQUISITION 1___ I_ 1_ 1 I IIIXXIXXXXXXXXXIXXXXIXIIXXXIIXIIXIXI- --- --- ----• 1 WASH DOT - 1405 DVERCROSSINB 1____1_---,_---,----,---_XXXXXXXXXXI____I__--XXXXXXXXXXXXXXXXXXXXI ---� ---'____,___-,- - - -1 1 ---11 -- - ----- --- 1 --- I-------- • 1 / 1111 ---- 1 � , , , --, 1 -- - ---- ---- ---- ---- -- ---- ---- ---- ---- ---- WASH T - DAKESDALE AVENUE 1 1 1 , ---- --_- ____1_ ---- ---- ---- ---- I____ ' , ,- - - - I ---1 1405 DC 1 -- '1Dakesdale- l----1' , IXXXXXXXIXI1 -- 1 - I, -- I,- ,- - -- WASH DDT - 6EOTECH REPORT ,__-_' __ ____ ____ ____PPPPPPPPPPI___ PPPPPI___ FFFFF: -- ---- --- ---- - -- --- --- ----;---_ ____ ____ -""" --- , , , I 1 1 1 1 I 1 --- ---- ---- SCS - 1405 OVERCROSSINB 1____,--_-,----,----,____XXXXXI____I____I___-XXXIXI 1 I 1 I 1 1 1 II 1 I-- - ----'---- SCS - DAKESDALE AVENUE 1 -- --- ---- - - - I XI --- -- - - - - -- -- - - - --' - - - ' I I , r- , . ( . 7.---7 . II 0 _ A o) '+RK ND IMP IIIIMEMIC MAL . a , ..mmas...m• 111 = BELI,EVUE r F=F1dV io \. E 1 •;a . • C _ -90 it ? ERC ^� • _, LAN E, ___=: __,-* ------ • j En \N) 0 IlliNtt‘-'111/11: 711 -iims ... REN O is PROJECT SITE I j . SEAT C TU r- s' Ili I /< • . a AIRPaR� co w >- Fr DENT'. PROJECT IT co r PARK , C .►� • II . . \ . . • .• : • „„ ,. _ o� :1., fM 2. • = ., ., sw h6T S . -9L • 111 • PKI� Lill� �I,' -HG •''C��� CGA DES;IU 'SC = RAC ,_ i i W ii i TRAC j > j! • iF4 . i i Je J 'SW27THST. 1111 CITY OF rE,soO7:9 -_ 11 f']! 1[J 141% ..i •��' TU LA'CITY IMITS ti M au� Z1 f- �� • f / FIGURE 1 I BUILDING/ZONING DEPT, • PR"JECT LOCATION MAP 0 S21810.J1 O#ESDALE AVENUE 'IL. d, c, 5 T \` -c \LC v \©N \-,ANC. -c7Cc - S \r\ '4\4 \., E Sv.1AVIc cl.� k. c S T o o\5• c�\\.� ' p . ve.R)cVN \ �- --- �.'► ,\ �,1 �' S ; 5 v Qom\v.% AL -c o VvQ \rat E-rcsr-.,S Co w��`S �� -4 .Z �.'r.c c� c. . cu S.\U-J <'t\`�,.c A V.=c1.. Z. IN to .' N��• \\ \ \ \�C7 �l+\4,rz\t. 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I EXCAVA 7-/ON y (FL/TURE) CI 1" LQJ A -QC-7-7 VE PIrES SURE/F; SOLD/E ' I A ♦i OF f'/L E ,o/,9ME TE'RP/L ES V GWT1111 !(I-//1/-:gi CES: • Water pressure is not included in either active or - r/00 PG FVF 7- passive pressure. e 2) Active pressure - 39 psf/ft. of depth above g.w.t. 20 PSF/F 7"� I a 20 psf/ft. below g.w.t. 1 - 3) Passive pressure = 120 psf/ft. below g.w.t 4) Active pressure acts over one pile diameter. 5) Passive pressure acts over two pile diameters. 6) Actual active & passive net pressures below the - excavation lines are dependent upon pile sizes, spacing and pressures shown must be adjusted accordingly.. 9.1 7) The pressure diagrams shown are only to be used in preliminary sizing and layouts. The final designs will PASS/VE , ',PESSLJRE/FT OF be based on load deflection analysis of laterally loaded piles taking into account, soil structure intersections. P/L E ' O/AME"TEl` ' FIGURE: UJVDERCROSSING EARTH PRESSURE FOR PRELIMINARY DESI( t GC C- TO -C OF /SEAR/NG STANDARD PRECAST, PRESTRESSED CONC. SLAB IVC./. P CONC� • M s ,ECK SLAB AND APPROACH L MC OVERLAY / : MATCH .EX/S 7 rALz18(TYPii.--\ / PAVEMENT, EACH 6/0E) . 0• 0 o I 0Tvc7) CAST-IN-PLACE . GI 'CLE,4,P k. FILL PILE w/ PILE CAP k-W I I WOOD LAGGING STRL/CTU,eAL m ': C.IFASCIA C , I-Ij 1 iSETI'VEEN SoW/EE COnlC,eETE /DRIVEN STEEL SOLDIER WALL Q r P/LES P//FS @ z 5'CENTERS W I I I I UND/S TU,R,BE,CD `�lll SEE DETA/L(7 ( ; •, T `N EARTiY Il111'1 l SOLD/ER P/LE `'K• J 2j� ' `u� (STEEL P/LEa I�I( C - WALL FOOTING + INGL')DEN L4GG/NG - !. 12P. (IIIr 1 • � -CI CONC. FASCIA /N.4LL — it UN/7ER�,e9/N IImn Ilia' . I �� SYSTEM I _ SEE META/L Ai STRUCTURAL TEE I'1/EL.DED TO . SOLO/ER PILE FOR.!'l/COD LAGGING AND CVAIC. . ,9SC/A /iVALL '/ ETA I L r-/-- •TYPICAL ULTIMATE SECT/ON . NTS OAKE5D4L4 OVERC20SSlNG " NTS 4 • . /3RG APPRO'IC / SLAB GG ' C-TO-C OF 13E I R2/NG - LMC INTIEM • .. :. .: C/P CONC. /DECK SLAB OI/ERLAY I \\ 1 NEOPRENE . /3fll /NG PAIJ • ST,�IN/DARD PRECAST, -----Ti PieESTiQESSE/D ti 3 II _. CONCRETE SLAPS II r' 11 ii. II 'I I— .o , • i WELDE/9 STUD TO A STRUCTURAL TEE 1 .o . . 1 PIPE !�/LE 1 A ' ° �ARY3 T/M/0ER LAGGING I I • ASSUME GI-O.MICE- TO- t I . D•D D /5402 OF k1/ALL i . . . 58f• /i S C LINE TO W03 1 t L/NE • 1 i :. D;; -CIF' TRAFFICf3ARR/ER 1 t °•' 1 Tac" OF R)OWY t • D 1 1 I '.0 L CAST IN PLACE CONCRETE F.4SC/A WALL j • - 1 • __(PERMA/VE/V T STRUCTURAL • 1 ' -STRR.JCT1/RAL TEE 4VELL7 t' 1 TO PIPE P/LE t I i 0 r_ TA I L (..- • NTH ' _ . 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"is`',rx? .:9;.,, ..s,'i4 +.. �@,:a r.; '. wW� ',R`, �� f:5"` :�.,•:'• : .. gi ..Yi,3�`a ', r� c.^ES eF`:1!�'9y r"� S •xQ+. •! '•iw^'). ct• q:£"k;' `''{�r,,d' .J„•. " .. .l...r" .n•r.'. • .. ,!' ,•t` :'. ,,i:�Y,.`ix':4:.. ,.iS s} .. :i,,,,�. •'.. t,, x • • • h'.•335:; sp#: '.:: 'fin 4.,;}� .k.:"• r€'�, IF • a ,c i ':<:..s..;:'yy:: : x .. '''''-.:{#' .F:$. •>:::x.::fr;<="=hT 'r 'y`,"'.3�: 'a;� ,f' ..3'x, x�E.+�f h3,:. In";• •, v '. �':.,• • >. i wsn 'k.<d x>.N >Sr� �"J.�b>. ./ ... .......: :.. ..•.. .... 'M-Es. . :•-t-,: s'a.:Qiii:,�i;;aii"air.'xxY ir<bti:r::y,`l:x::>L:r. ,•<, .;"':t�yE:l,;::�:x M.. ._-• ,,..• x. /:• V� l' NOTE: • LEGEND: The depth and thickness of the subsurface strata indicated on the section (profile) were ; ::: GRAVEL WITH SILT AND SAND, VERY iiii generalized from and interpolated between test borings. Information on actual subsurface DENSE, PIT RUN FILL WEB GRADED TO POORLY GRADED conditions exists only at the specific locations and dates indicated. Soil (rock) conditions and . . , SAND WITH SCATTERED GRAVEL I water levels at other locations may differ from conditions occurring at the boring locations. '- NON-ENGINEERED FILL WITH DENSE TO VERY DENSE Also, the passage of time mayresult in a changein the conditions at these boringlocations. 1 , ��;,,.; .., CONCRETE RUBBLE B-1(15' Pa. 9 W) BORING NUMBER W/OFFSET FROM ' .,------. GENERALLY SILTY SAND AND SILT, OAKESDALE AVE CENTERUNE 0 1■■■■■■1 1■■■■■■1 OCCASIONALLY SAND OR CLAY, -t'�! GEOLOGIC CONTACT. � �_■■■■■l MEDIUM STIFF AND LOOSE. ----7---- WATER LEVEL OBSERVED DURING DRILLING. I ; •LLLLLLLLLLL' WELL GRADED TO POORLY GRADED ._L_LL`LLL�LLL SAND, WITH SCATTERED GRAVEL WATER LEVEL 7-21-87. AND OCCASIONAL THIN SILT AND PEAT. MEDIUM DENSE TO DENSE. //t00 /ZrOD /3�OD /-�tOO /5400 /( Oc '' • /7#00 t30 - fi5 0 - - F�f/ST , 7Z/A/O P.POP �EO i.ZD " " ,PQ4Ol�YAY • - .. f20 MI■■i.11IM■■■■■■M■IMIIw_. :■MINN • ... IN ■HhiU !_ !1!IiI l ■■��► •.. .. ; • ■ ■S�■■■ fi 1 ._ `�f'/D 11 i ■-ram ■i■I1■at■■I 110 mIi1!!! Ei •1�� —� - rii■�r 1[•7�■■��■■riAIal Fiji�� LLL L L LL LLL LLLLLL LLLLLLLLL L L -.1■_...i ice—_fir■�� '!_ --- �.,. .,��.�■r.� --- ��\���■�■■t'=>�'�i■ L L L l7 L L L L L L L L L L L L,,..-L.-2-L,L•L L ���'�■11.'���—_�- `•'----•'�'� L �. 1� �— *�■■i I■Am■■m■■ii■■mo■�!7.---- L L L L L 7`I I. L L L L L L .:\L L L L L L L L L L L L L L L �L L L L ��.II.-!�_■ -�1 1'■■�P L LLLLLLLLLLLL` �; L L �Ir' ■ L L L L L L L L L L L L L L L L L L` L L L �� LLLLLLLLLLLLLLLLLL,L LLLLLLL L LLLLLLLLLLLL LL L 1, L L L L L L �L�LLL L L L Lr, L L L L L L L L L L L L LLLLL LL LL L L L. ■ L L L L L L L L L L L LLL L L L L L L U L L L L L L L L L L L L L L L L L L L L L L fL L L'L L L L L L L L L L y L L L L L L L L L L L L L ri-LILL::LL,..1:„.L.,;:l:LLI.L.LLLL.LLLILLLLL.LLi6.L::LLLLLLLL L L L L L L L L L L ■ O _ L L L L L L L L L L L L L L L L L L L L L L +.' L L L L L L L L L L L L L L LrL L L L L L L L L 1l,, L L L I- L L L"L L L LLLLLLIfLLLLLLLLLL LLLLLLLLLLLLLLL L I L L L L LL L L L L L L L LLL L L L L L L L L L L L L L L L L L L L L L L L L L L L L L Irl L L L L L L L L L L L if L L L L L L L L L L L L L w LLLLLLLLLLLLLLLLLL_ LO LL ` L.. L L LLLL LLLL ` LLL L LLLLLLLLLLLLLLLrLLLLLLL LLL, LL. LLLLLLLL LLLLLLLLL LL L L L LL L I ` LLLLLLLL L L L L L L L 1 L L L L L L L LL LLL L/ LLLLLLL LL L LLLLL ✓` LLL LLL� LLLLLLLLLLLL LL LLLLL L� LLLLL L l�LLLLL LLLLLLLLL _ LLLLLLLLLLLLLLL LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL LL LLL L L L L L y.. L L L L LL�� LLL LLL • LLLLLL LLLLLLLL LLLLLL • LL L6 • LL LL LLLLLLLLL �LLL LL LLLLL LLLLLLLLLLLLLL LLLLLLL LL LLLLL lJ L L L LLL L LLLLLLLLLLLL4 • LLLLLLLL LL L L L L L LLL L L L L L L LLLLLLLLL`_ LL LL LLLLLLLLLLL ' LLLLL L L LLLLMMWWVV�` L. LLLLLLLL . LLL LL L� L L L L L L L L L L L L L L L , L L L L L L •`L L L L L L L L L L L L L L l LLLLL 72 L L L L L L L L\L L L L L L L'L L L L L L L L L L L L L L L L L, LLLL L L ` L L L L L L L L L L L L L L L 1- 1. . L L L L L LLLLLL L L L L L L L L L L L L L L L L LLLL LL L L L L L L L L L L L L L L L (� ` L J L L L LrL L L L L L �L L L � L L L L LI L L L L L� LLLLLL L L L L L L L ALL L L L L L L L L LLL L L L L L L L L L L L L L L L L L L L L L� / L L L S L L 1 L.L L L L L L L L '�sy�'LLLLLL LLLL LLLLLLLLLLLLLLL L L L, LLL L L LLLLLLLLLL L L L- L L L LLLL L L L� L L L L L L L L L L L L L L L L L L L L L L L L L5.[-LLLLLLLLLLLLLLLL L L • L L L L ` L L L ✓LLL L L L L LLLLLLLLLLL L ,• L L L L L L L L L L L L L L L,6,.,LLLL L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L - L L Ly L L L L L L L L L L L L L L L L L L L L L L L L L L L ` L L L L L L L L L L L L L L L LL LLLL LL LLLLL L 'D L L L L L L L L.4!L L-L L L L L L♦ L L L L ✓ L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L t, I _ l�l� L, ` L L L L L L L L L L L L L L L'L:1 L L L L L L LLLL /O T L L L +Lyy LLLLL LLLLLLLLLLL``LLLLLL LLLLLLLLLL,LLLyL. LLLLLLL.` L L L L L L L L L L L L L L LLL L L L L L L L L L L L L L L `.. L L` • L L L LLLLLLLLLL M..``LLLLL LL L L l L L L L L L `LLLLLLLL LLLLLLLLLLLLLLLLLLLLLL L `LLLLLLLLLLLLLLLLLLLLLL LLLLLLL L LLLLLLLLLLLLLL ` L L L L L L L LL� L,` L L L L LLL Ly���.,,L L L LIL L . L L L L L L L L L L L L L ` L L L L L L L L L L L L L L L L L L L L L L L `LLLLL` L � L•L L L L L L �L � L L L =LLLL LLL LLL L ` L L L L L L L L L L L L L L L L L L L L L L L L�L L L L L L L L LLLLLL L L L L L. ````````LU LL W/ L L L L U L L L L ` L L L L L L L L L L L L L L L`LLLLLLLLLLLLLLLLLL �y L L ' L L LLLLL`` L L _ LL L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L.L L C LLL L L c ____ _= L L L L ` L L L. L L L L L L L L L L L L L L L L L L L L L L L L L L L �. LL�L L • L L L L LLLLL'LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL< LLLLLL`L`LLL L`L I L L L L L L L L L L L L L 62. 2 , LLLL `L •L _ L L L L L LLLLLLLLLLLLLLLLLLLLLL LLLLLLLLLLLLLLL LLL DV - �� LLLLLLLLLLLL — -� - 6'T A•;Z/7A1EA/T ' . LL _ '‘'. r.<PiVTAC - . -30 - . - t EAST A UTAi A/T I • COit/T;l 7-y , R LA- . 5GL- -- -gym. - . I -2Ac2-- —_ • i ---z�_ _ / ; „3 FIGURE 4 t SCALE: /' !00 // ?e/Z SUBSURFACE _' /,�_/5' ly".�T ,--.,----, - -- SITE SUBSURFACE •AVi$Mil�•'�s - '"Y S21810.J1 1 i -a ;:: , ft .4 { • ' i-iii. 1.' • • • . 1 LAKE WASHINGTON N 1 ; • ''..-N.,,....N.....,s....\.: . w goo } - �%�� t ® t city Of F3enton i . . . . t4 ' s. • :lop ,,, i vicei IP rrikz.. .:,1 ,..''. 011111111111".:.' :77.‘' ' . .' • OP S.W. 18th St. "._my . _ r \J A • , V 1 1 I NORIlAeR14 - tmCD f... a ;' - • 1 iIIM' • % 1 • .. ti c �r ii11G = pI ! !IIMI!. > ; �' � . /; i lll 1IiM : • G � i lll sell IIII! �1IIIMi �" _ ...., _......,=....-....., . ,,, t T1lLi11iiim;;;i;iiinnwim . lll!'Q ' ;• S.W. 16th ST. I jwi Ii!{{i'iilii -t- 1 4.% ,. ____ , ,... . __. 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"� 4 r ®,. � - - _• ••• .-• q .- ..SECTION - p _ _ ..- f, . - _ '.p. t<^ •rca� wi �a "'� w ' �•,. . . �/ 9 - <<. , . y �:2 " ,,.., • ��,g—•� ty `, 't,. . - : ''' ';Y - =.--, Ai - i. / - CI .. --< . mas, �_ _�$ / u ` ��ca.� �F " ai� - - - - 3 _ x�a_ /r � ._ - t 4 w, . te,r / C4vg 7RUCTt ASPHALT C=_ FO __ / _ . • - ws'M `; ; ' � e a am fI__ -,_.- . . d '/ � • • •y/ 00:OJE Lre• Tr 1 lV"TS� L.t4lA.rLL.V_,f8 - ,e ! J �- yam'.i FJDCl�V- 1� P. -i • - i - • I f ! _ 9EG/Al c enJ F ce — > r - -60O�6Q/JTN�-• T - p - • • • • -1 ! T'- 1scsaRT! ic" ! / . .- f� - r- • sl zt � CQl�R/0P IsPK/L : -,�e. d ' _SPILLWAY'7D C !!._- / - `� ` -s =': k : _ @ y1�/�CAii4!1 /RlY ElY9 �' � _ ,- -- - -i�-. - - _ 4 " . ?,-il ? :4. ;- . , • • _ �. f . vfim . _ `9 - , r©,i • _dga . nk "q .yam .rr� ' ;:• ��__ _ „ 6 _ T —�" , 77 .‘-:;; ;:: e �i ter' 'rr ,of> «3G/ 7 n-/ - .- ��• ea '�. � to: , _ 7. - P:OX1 AT t L/91T3Qa_Iwo; L . > S x � r -tr 3 / N - r - - .- - - • ll / C _ J : , Lu � !/J t- , • ''- r �' i. d • c!YaL � V�1 :TYPE p�vd —ti - - �; . LACE EX/57/!Yo R/PRAP l_ ! r a ;i1:;>: AP7�l.' 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FENCE / p f %�% ', �, ti- � ++!` s •zw,y�h M �� �� ?7 �1.6o LT 1 � --_ ▪ ® TERMINATE NEtN CHAIN UN FENCE AT BFUDGEIMIN ! y _.. . —-- ® WALL - , - ° . r = . i • p o. •' REMOVE EXISTING FENCE AS REQUIRED FOR SHORING AND . _ _ :_ f ` \ gt ' I ' ® CUT SLOPES REPLACE WITH NEW CHAIN L1NK FENCE.. j/ [ / r _ \ 1,i i I. 4 I (. .- -- LEGEND TYPE 3 ON THE ORIGINAL FENCE ALIGNMENT . _: _ - / / / Cn/LLwAv/ra CaTcts�.vslrts= _- _- ._ \ ! BEGIN ASPHALT CONCRETE SPILLWAY AT THE EDGE WING. _ y! _ / ! l�: •as L/!e• y .' -_. .,._ _ • ` �. •1�. �_ /7.00 ' i _ o— �Ee�u�_ _: -_ , o WALL • . . /,' • ` COORDINATE THE END OF THE AC SPILLWAY WITH THE 1-40a u� �' - .. f5/�„. - `/. ; ._!`_ . e - ; '` 4 1 - •, - ® WIDENING CONTRACT.ADJUST LOCATION A_S DIREUItil BY: • / E • c }" J • SUPS E ENGINEER = - Lbwsr�c �SPi1AL7 cOI� w O } t i ' •, „� --I1GHT LODGE RI .© APPROXIMA O �OU'R FROM 1-405 WIDENING _•: ;-.'.. : / / • ( • ! PRe4P. �; SPILLY017Y' O C/9TChr adas/M.:-.-_--' �' I 1 3 4 r t I l . 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' '`‘'., •" •`•.....• . ••:.••• ' ' :.a, t • . . .._ iii . . . , . . _ NOTE . • • LEGEND: . • The depth and thickness of the subsurfacestrata indicated on the section (profile) were ':; ;:; GRAVEL ITH SILT AND ® VERY 1 generalised from and interpolated test borings Informs on on actual subsurfac ": WELL GRADED TO POORLY GRADED DENSE, PIT RUN FILL SAND WITH SCATTERED GRAVEL conditions exists only at the specific locations and dates indicated. Soil (rock) conditions end : :: ::: : .,. .°-`°%.°,` NON-ENGINEERED FILL WITH 8 : 1 DENSE TO VERY DENSE. i • water levels at other-locations may differ from conditions occurring at the boring locations. =. CONCRETE RUBBLE. - - Also,the passage of time may result in a change in the conditions at these boring locations. _ - �1(i Gel all BORING NUM • BER /OFFSET FROM • ® GALE AVE.C NE- 'i■■■■■■i GENERALLY SILTY SAND AND SILT, . lfi■e■■■f• :1 OCCASIONALLY SAND OR CLAY, , f'�..•-!_ GEOLOGIC CONTACT.T. ■■■■■■a, ,•••--- MEDIUM STIFF AND LOOSE. <-p--- . 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THE:IDENTIFIED FLOOD HAZARD AREAS WITHIN;THE RFSTUp'�' 1_IMITS s REFLECT BACKWATER FLOODING'FROM THE GFEEN RIVER, TG•SPRINGBROOK• :;� CREEK;:-MILL CREEK (KENT); AND MILL CREEK (4W URN), AS`'APP.LICABLE. �_• ' E k CITY OF REN i ON AdDITIONAL•:FLOQD•PRONE AREAS FRO.M;pTHcEoRt„LOCAL DRAIN1 GES ARE , •i` NOT:SHOWN. (REF'ER TOTHE EXISTING KIND COUNTY FLOOD INSURANCE STUDY :-) i °::::= I FOR IDENTIFICATION OF ADDITIONAL FLOOD HAZARD AREAS):, i, V .A. .TH,E:GREEN.RIVER,FLOOD HAZARD AREAI,DiELIN 'AI ONSAND.ELEVATIONS AlI ' R '�' '' OUTSIDE OF:. THEM `1:N.:GI ANWEtgEPRESEN.T ANA.CYSCS"OOND1'TJOIVS WITH LEVEE SYSTEMS 'ASSU:M D REMOVED WHER.E,.FREEdOARD IS;LESS:T4AN; O'.FEET. BUILDING/ZONING DEp�- (REFERENCE LEVEE SYMBOL PER LEGEND*.'1 'I EVEE SYSTEIVI:�DESFGNATIONS). .k:is } a t:::iii„ '3. ' FLOO;DWAY DEtjNEATION'S REPRESENT MU MUIV�€ HANNEL' AT. R SURFACE • ELEVA.TION :TOPW DTHS: REGULATORY FLOODWAY'FOR ;LEV O'D SECTIONS — EXTEN'DS TO THE PROTECTED TOE OF THE:?'L:E. .iE:ESJYSTEM.•"• ::;r;i .. . 41Cti\CI 'r. :ii 1� ss. r: 1 s: WORK MAP FOR SH ET 21 of 33 • • FLOOD INSURANCE RATE MAP & CONTRACT NO. FLOOD BOUNDARY AND FLOODWAY MAP EMW-85-C-1893 COMMUNITY: SOURCE OF FLOODING: KING COUNTY, WA GREEN RIVER , rr.iTV (IF RFni rnnn BLACK RIVER SPRINGRROOK CREEK