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Ayix , :: Mini liStill W4,1404tit.V,‘'::: 1 :°_ Y 1! i Is W 'J g a g 171121000 • c RENTON/KCWPCD/SWD CEDAR RIVER UTILITY CROSSING ( Y O G •! - - � PLANNERS S 1996 •c)Y `4' it • SCIENTISTS sePta a 96 -DEVEL�� Er p 4 C: OF RE NON i G l‘*\ / poi'� \\�. li - /, ',/ / / �/may I �� V � i f.�/ / / LEGEND .y.�/� i:� �� .may/ . /A/s/�/� / AY-I RE90ENTAL YULT-FAYRY AW1LL j le f----- 9I%q% \',/ \ *�47/ //// /R////%"/ ,/ E P-1 PUBLIC US �IiJ/►— ; II:: , �/� Z�\\\F--- \\\����.SSO /'* '/1/// /// /Y//'/ i R-8 RESIDENTIAL(R DU/ACRE) ♦ � �I/ ��� � - \\ I�A�/��/�r/� /i.�,//*��/ �/ ��/. AC RESOURCE CCNSERVATON '�j,/p� iI//�// � � //j /, / / // R-24 RESIDENT AL 24 DU ACRE q ' �� j /4/,// /'�/ / �i yi \\� ps 4 �ii 7i//i i/*(i'/i ii // i °9 O 5 19NTON/KCWPCD/SWD CEDAR RIVER UTILITY CROSSING y ..aimo �s� OGNBE)8HOOD DETAIL MAP — � ON SCALE: 1'=200' SeNeaaln.ov, • ENO OF HAM MAIN PROECT I ACCESS TO PROTECT SR(FROM ROYAL NUS OR.SE 005500CTOR TO 0001MINATE`OTTO RENTON WATER DEPT.FOR ACCESS THROUGH GATE AND WITH SEATT E WATER OEPARTEENT(SRC)FOR ACCESS TO THE ESPIING HATTERAS.ROAD. EiNFRa1 NOTES WATER MAIN TO BE CONSTRUCTED FROM BOTTOM OF MI TD TOP. tk1� \ 1 HJLSTATIONING AND COORDINATES ROF R TO CENTFRUNE OFF FIRING`>t \ \ \ \ PROPOSEp vAiFR NAW F+ E' DD NOT DFFIEti P8E,gN15 NtllE THAN J 1 1 1PROPOSED BWRGTIIXI 01AM9fRd� - LJ.' CITY OF RENTON '®' I RESTORE ALL O1STATED ARRAS TO ERRING CR EEiTEA CWdTICN�' a 1``. H:E v Pd'I OSFD SEWER uAIk4 ��. 1� a\ `- �`\� I ��FI�, '� I N,UxTAIx VONWNR ACCESS AT ALL MS 10 THE 1iRE WATER PIPEONE MA ME '�� \ ` IV `A11�1II I IJ111,' ` I/ II I'f' b ,1 + GRAVEL AC(355 R040WAY. F.\`: ,.\ 1 ,, ))/ ��II1I1 i L. / ii I�11' li�'�,t\ 1\ J31• 122' Y 50' 7' COxiRACRW N41 NEED TO OBiaN PEAU1551ON fA01A SEAf11E wA1F3 CfvPRiMEnT Y,. �//�� � 111 I ��EEE■ )/�"'�' " , {{{]]] p "Op ' COMIRA THEY MEW TO USE OSTAS E54 RIGHT OF WAY FOR PROJECT ACCESS. `-N ' !s i yr.�/i„ / j7' .y/1,`eF ),y ,, `,I '` '�;., p !CO 00 D P 9'� Ii 1 00 ULD THEY M W 7 F USE S 'S SSL CITINCRIGHT OF AY FOREATTLE WATER T AC PIPFLNE \��\V��n � ����'i1/ Av //Il" \ `I O .�P99' • �� -,��A�- WANK NANNQt DO:3 PLACENEAVY MATFAAL MO NET.CR STOCKPILE EXCAVATED v. 11.,�! 4 -� ,'a��of, // Gamil (��(1`1 �` .. �� �°° I-�`I �, 1lV R,Er EPEE HIx s F¢r o HE a PIO e \�•, A` ` :. �� it is pill! F41 - — tiL NCI 0` cm `"omiA. 'oivn//ID114///O/1/O/D /'�'/ /�/ ////�r` 41.20 j�� Al\� �� � ,' . Aismfa��,�io �_ �VrOppill,to wo or sc NUN'MEET 0-'19P,-- ir -, it \_____ ---N.„\)\ N f"1'1'1 1 ,,,,....0ip. 'il � - ,r ir / I J END OF WATER MAIN PROJECT ftio "1-44) ) \1\? ')) )4 0 )l N`,� i ' S' ��% J / / NEE pRAINAGE PLAN(ONG / 1 i g �' �'. D R AFAR DRAN o LEGEND q��%' Y. \ 1 �`C \E 0i WATER / Q d. N \ ,I S�� LENo 6'SEWER MAW PROJEGi RUxOFP RtONSONS / ' CJ / o NO r �"f; //a �� J I\ / �[�/ / / ,•I O TOTAL SQUARE FOOTAGE OF STE=87.000 W 1L 1^44 �/VV// R e' PERCENTAGE OF LOT COVRRAGE=0 m.IL � Y` 1 / / \ ` V R-3.• SQUARE FDOT/GE OF ALL LANDSCAPING=0 AA It IV / / . / 1 b�tlj 0 SITE PLAN 3f-9 b r YAAA�/�/�AJAT yyy� 29'-2 �{JY a _ �_I-+'-D' 2� ��i�ii RIVER omsanc y, b 1 ` i .. A F•OSm WATER JBAAM % • � STY OR MOON PARKS 00, w 11WN01 WPLL I. D FINANCIAL AB • 3 11'-0• la]IIiORCNG CAME '`~ O',!: .;,'. �t65 ,• WATER NAN GROUND PRORLF RIVER CROSSING TRENCH SECTION SITE REINFORCW TRENCH INj jj PROPERTIES CEDAR m r [SEVER MAINS GROUND PROFILE 50' • • PROPOSED IS•WATER ANT G c 13 -, TIMMS 4 ErBC6Sii197B ........ "?..' r Al leo-,l® (!0➢)Q!}-0IEO NO)1�9113 !`�'a __ -0521 ROM 7204,162 MI 7214032 000)m-Bmi __ °RAMC 6 NOT TO SCALE 1 BAR IS NOT Y LDND O 1 /yp]�/Y PROPOTD It AND It OTTER MAINS A'Ts-. f RENTON I KCIWPCD cr PROFII� �`F: ' E, ���� C€DARRIVE p _ _ _ ____ _ _ _ NOT TO SCA. •_ c _ _ _ _ __ __ _ O� gv �FV�L �?/,,,,,-NI T fiLAN� L1JEi(10 PLAN-AND PROFILE C:IT r 0 r RENTOi�Iss.010 1 CRO%yla)SCH�GP`I FEB OW lOSS 1 TI E I,00I 7R10 1 3�0 • • • PROPOSE➢WAAFR NAM NOT YET INSTALLED LPHILL OF CONSTRUCTION AREA. R g STEEP SLW � FOR E TREND! ST SLCFE LOCATION ' BAC(RLL NATURAL -I AN I I Pin BEDDING NARIGAI NOTNN..w -III I I- EDGE OF TRENCH EXCAVATION , I-I I _I CAST-IN-PUCE CONCRETE NO LOPE THAN GC-0'OF MSG TO REIGN WEN • .':':�::'•+.....:,.. EADu1x AT AHERNE GRIND CONSTRUCTION TO NMNI$ SECURELY ATTACH PIPE TO ANCHOR • 1111 I POTENTIAL FOR EXCSSSNE EROSW PROBIENS TOO OCCUR 6'OFFER1m I III Ill yyy BLOCK PATH RFA.IOJADLE PPE DAMP •: °?s:• l,At•i:J;'•�:: 6 UNDISTURBED NATIVE GEER..ETYP.) mo•.;., y •,; .:;.;•• _I - 7-D' BC4•SiavlR 1-1 I@ll ^�,'T::•.�."..:^'•. I_ I I PLACE CONCRETE ANCHOR BLOCK / —, 1 _ CONTROL MEG 116EAUID UPICIL OF MOON N AGAINST UNDISTURBED NATIVE NATEIVAL - / o -1 / / I I III I II "STIRRUPS C 8'O.C.EACH NAY I AO-O •I 69_0• p• o IIl 6'SPACING NO _ 1�- 17 17 T .55'LORD.T.'THICK �p•-D' n g Y-0' - p_D' APPROR NUN' BPROME ENT FLAT BATX'R FOR APEHO.EA CAMAILERON=.091'NW. I Ie-D SOOC FORTYA W DI I.17 L G ON FIFVATa NFw RAN VG STARLESS STEEL AKOIOR Bars • • 4) TRENCH DAM • . . inn • • n i • i • NGTroEAE I F—I A'_..1 ICTIIt ItI11'I,�JII OF VD.EQUALAL IXGYATI AL TO DISTURBED AREA EOE AI TRENCH (N 70 INOt 1'SURFACE WATER P OF T TRENCH SLOPE EROSION CONTROL MATTING 7T 5 n111II \ PROMS 1Y'BEG OVER W W STEEP S OPE REND 11� n1=•1 RESTRAINED JONi PIPE ;.t �. NOT TO SCALE UM I=7fA \\� 57 0' nliip1 min •�`\. I6 NATTNG NO. If:_ll :, ,71 A'OA.ORNN PIPE. :IiI.Ir-I��11.11:It Q D-O RDR TRENCH IXCAYATON J1 DIVERT SUB SURFACE'DATER 1- =.,. EXPOSE DRAM PIPE AT SUI6ACE 1.EROSION COIGN.VATTING TO BE EQUAL TO ANXCO QUEEN BLANKETS. I'-6' �� C1 Tr BEANO WENDT DAT TD ,ZI - II mE sIREA¢ 1(-e. ,���` 2.NATTNG ro BE INSTALLED OVER THE SOILED ENTIRE AREA ON AU. 1 IL 1� I �Ery'I .I ��\ I CONCRETE ENCORE BLOCK AT loo'-D'SPACING A A CREASED SLWES I1I n n 'I r �.�� B.RTTALL EMIR STAPLES ACROSS THE STARE OF EACH ROIL OVERLAP ?51 I�11 I_`I II-II II::• , 00-0' TORONARY EROSION CONTROL FDCWG,INSTALL ADJACENT ROLLS A NM Cr 6-IN01ES SPACE STARES Ai 6 HOST may' n-11�n` AT 50'-0'MIERVALS ALONG CWSLRUCTW A. INTERVALS ALONG THE SIDES AND CENTER W EACH ROD_ y Ln.N E "'PAN-,-.t.VP F di' mil[-_ I F F i REMAINTAINCONC AT ITOA Two LENGTHS OF FENCE TON I LL ALTERNATE IRE SPACING LOCATION W THE SDF AND CENTER STAPLES. II�II ,I, -11=1 QC IS INSTALLED ARM OP FENCE. ACE SONG AFTER NAITNG A MATINS TO RE INSTALLED OVER VEGETATION AND EROS%DRI1Ra • RAN VIEvj TRENCH CALL ua1FP.ES TOPREVENT THE 'A A I•Y NM 9f [CANS A5 FEOUIPED. PASSAGE CF SUB SURFACE WATER ALONG ME EMANATED TRENCH.SEE 5'ECS. .y.. 5 INSTALL NETTING ON TOP AND FIBERS IN CONTACT M1N INC SqL W E :L.1CH ROOK MD WALLSWALLS 110 1CN MNiALL I1.01 DM YA1EPoAl PIPE ANCHOR BLOCK EROSION CONTRO ANTEING INSTALLER aOFR DOAPLE,ED WATER INN INSTALLATION DOVEHN. GF CONSTRUCTION AREA NOT TO SCALE INSTALL 7RA'.T-A'LONG WOOS STARES ONE FOOT MADE x 1'THICK LAYER W Ai 6'-0'W fYTT1ER BURIED 2'-6'DCEP. STRAW OR TALI.UPHILL W FENCING Q0 g GO..CONTROL FENCE FABRIC EQUAL TO p1 p DOG CE-ROUE.v.AN EOS=GT'imm. \/ LIe TRENCH DAM AT 50'-e SPACING 0C. SEWPE AND SUPPORT w1M 7.2'.1A GA FARE FABRIC GM TO STAKES USNG STAPLES ,/' 1' i I I A i 1'II i11!1 Ni I.Id,1Ai11'i 1.IN�iI.IIII_I 1T11 IYV �\ ••� 10 BE PNONOD PER OSXA AO GANG VI PRD,EcU' GF;194 WALLS EROSION CONTROL PLAN T� STANDARDS(TM) NOT TO SCALE CACAVA1E A 6'A 6'ENCORE �- LAY FENCE FABRIC IN TROUGH A'-r MIN�� �// A0 BACImLL w1T1 PEA GRAVEL TOP G- T' elm. � RECE !7 ED c - = pumges j--1-�Th... I'` "��.�^, ,E.ABOVE EPE BCENIISTS TEMPORARY ,; gUT-AN OYYRA EROSION CONTROL FENCING ' an-use 6Wm >m IO}mm C�< _, ,.,p1 MAD Eq� KV Tn-use iazi -al f..3 Y�-�E NOT TO SCALE C�~5N 'T yyV 6'BElOu PPf aQ yy T^a 1996 BAR IS NOT Y'LOP 0 E Y PalEINYl£NE*RAP MOUND PIPE(TAP) Fit�i/�iI.iI.Knu REMTCBJ/KCWPCD IVEM(TOG.A-1EAXmA PLR) FOUNDATION a[awm er'ulgNALirn ITre.) p�VEL01'MEN pL.ANNINr CEDAR R -- - TRENCH-SECTION - -- - CITY OF RENTON CW� CTION_DETAILSPE TNT TO SCALE :AI WUA.POO 170 I W I FEB IBM 1156 I SGONN soR0. I rarB G • 1 i R k. )----------------- ,.. 1 ____--____ .,:,.....---. .. , ..„--,__ 1 s itt ------.------.---._.___------------__.-----;-,•_,--;-7--------___--•-_7.-..___I s . . -, g ti�` o L 1 8 t r) \ 474 . 1::i 1 spnna i, main I 0 II 4,40 \ .� € , k\ 1 i,i, 1 . / / i-- i 4f 11 ..,.... i ...,, ____.„. . 1: ------ _ i„,_ ,;.:. 4 _„-_,. ______ _•---.„.____------. 4* \\,.. ,A... =----,-.----. 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Pi/ 7////4/I f//7//j / (1'// /.///1/1/----'-''' '..."---..=-- ,-,.-.."..------- -..-:':1•w,'*•••.-,*- *.; *. -- - / *y ///y///ft //// /// /p//// // / RENTON / KCWPCD / SWD CEDAR RIVER UTILITY CROSSING REcElvEn DRAWING IS NOT TO SCALE ..:i .., .,. .,. ...: .. ENGINEERS NEIGHBORHOOD DETAIL MAR? 0 5 1996 .?XXM . ....'''• - PLANNERS IF BAR IS NOT 2' LONG DEVELOPMENT PLANNING 1" 2'' SCIENTISTS 0 CITY OF RENTON SCALE: 1" = 400 \REN\195-020\PERMITS\CRUX_PO1 I END OF WATER MAIN PROJECT ACCESS TO PROJECT SITE FROM ROYAL HILLS DR.SE. CONTRACTOR TO COORDINATE WITH RENTON WATER DEPT.FOR ACCESS THROUGH GATE AND WITH SEATTLE WATER DEPARTMENT(SWD)FOR ACCESS TO THE EXISTING MAINTENANCE ROAD. GENERAL NOTES: WATER MAIN TO BE CONSTRUCTED FROM BOTTOM OF HILL TO TOP. t I /:71111 7.4 I .- STATIONING AND COORDINATES REFER TO CENTERLINE OF FITTING. 11 •. ' . `i.. -. \t - PROPOSED WATER MAIN ly DO NOT DEFLECT PIPE JOINTS MORE THAN 3'. 'VM '''�.,, .. a t 1/4 R%A L IiILL9. ' 3 PROPOSED BIFURCATION CHAMBER CITY OF RENTON 1, I RESTORE ALL DISTURBED AREAS TO EXISTING OR BETTER CONDITION. "�.. - -STATION BASEUNE a B:E ItI k'rL4 :::D MAINS 1 .,;ey `' I zi • 50 PI10�,)11./ . -�.. � 231•• / .....- '�?L'ix4/g/ 28 Q 92 NJ HItiJ ,fit .. .•• 2 rJ • .. y. ' �., !rd� 5 0 ' / DO S9j DISTURB THE EXISTING 36"DIA,CONCRETE SEATTLE WATER DEPT.PIPELINE *•� . _... /.' _•" .�- ,��Mr1' / / .- .. -/ t / /' ., �., -"'�,� ! O 00 < -.O b 8,. I -.4T, '! .-- IN ANY MANNER. DO N4I PLACE HEAVY MATERIAL,EQUIPMENT,OR STOCKPILE EXCAVATED r" • ...,.j:///`,j„ 'L' \.. \ C —.. 4._ 4 - MATERIAL WITHIN 5 FEET OF THE 36'PIPELINE. / / .. / errs.— �� —fitt ':�. _ _. 1 END OF SEWER MAINli' q I • J� 4 A / JI;I(p1/ END OF WATER MAN PROJECT ��- / / SEE QRAINAGE PLAN / 4 /i p r t;? .Q �, t°i r i ! ;:`' j/: NO R08)FOR R o LEGEND ffi,. ' � ( l• _ !,` STORM WATERNA / �' o ' i Cr • • • Gj AND �, i. •,�. -i'� `SLy t RUNOFF PROVISIONS W . .� /•A. / t / `• END OF SEVER MNN PROJECT C.) V oC t : r -.+"' .. ,, / / - +i C1a TOTAL SQUARE FOOTAGE OF SITE=87,000 sq.ft. �p • 1q _ W 1 � � PERCENTAGE OF LOT COVERAGE 0 sq.ft. \, „/ ' ' / / ?II./ / •' SQUARE FOOTAGE OF ALL LANDSCAPING= D sq.ft74 / ,4 f� /4y� -4 t=1 05/,wY///I/////[eilffa' Jffl/s;/CPINN //YN;'/r"!N,/A'wl;%////4 v. Orr/i/,/Ga1fl/7l, 1 yy SITE PLAN / 1"=100' / 3 o 29.-2" '" 7J`/�`c ._ z ..........�._....�..:.r..••. ~t-0" •........+....._ _. .�. ._�.� e. y//////////// RIVER CROSSING I -"�-�. w r t ...•- •.•...,•'.. SED WATER �. .. 48 ^. I,.•• •• • • •.• CITY OR RENTON PARKS DEPT. Q • y Lo o , • • •• Y y r� �I 1111111*, / \'\•\\•7 ^`"� B:E FINANCIAL 48 \, 3 11'-0" REINFORCING PLATE \� • 51 Lo '' '...', % ^" • L \IN NA, , * • ti, .� . . • ''� WATER MAIN GROUND PROFILE RIVER CROSSING TRENCH SECTION SITE PROPERTIES CEDAR RIVER REINFORCED TRENCH WALL t"=tow SEWER MAINS GROUND PROFILE I"=50' `"' RECEIVED PROPOSED 16"WATER MAIN PLANNERS S s SCIENTISTS =��————- — REDMOND WENATCHEE OLYTIPIA (800)720-8052 (800 MAR __L.——_-___ _ //// (206)869-1488 (509 663-0150 (360)705-C628 0 5 1996 _ 7 1-8052 (800 722-8052,� --=-,.- __., .______ _ n.1 0 DRAWINGIF BAR IS NOT IS NOT TO LONG DEVELOP SCALE 0 1." z- DEVELOPMENT pi ANNG PROPOSED 12'AND 16"SEWER MAINS RENTON/KCWPCD A ReNTON PROFILE CEDAR RIVE' G NOT TO SCALE PROJE PLAN AND PROFILE .18 K. III Dui¢! REAMED DATE 1C,11E 0.0T DM6 M0. HET 195.020 I CRUX_P12 I SCH I GP I FEB 28,1996 I SHOWN 1 100 L R10 13078 �'�"�—...._.....----'`. ` PROPOSED WATER MAIN NOT YET INSTALLED -1 I UPHILL OF CONSTRUCTION AREA. g .fi + SILL!'SLOPE TRENCH RESTRAINED JOINT PIPE FOR ' STEEP SLOPE LOCATION BACKFILL MATERIAL s — :a. ' 3' o -) I`I IF I I - EDGE OF TRENCH EXCAVATION ' $ PIPE BEDDING MATERIAL •'l: I Pi •Ii T - e 1 CAST-IN-PLACE CONCRETE ' NO MORE THAN 60'-0"OF TRENCH TO REMAIN OPEN _ a _ a::_ •'•o } _�I I DEADNAN AT ANYTIME DURING CONSTRUCTION TO MINIMIZE Il i SECURELY ATTACH PIPE TO ANCHOR •• �'V.'S-b.' •'. .4 111 I-- ...'.� — I I LEIS TO OCCUR. �• POTENT AL FOR EXCESSIVE EROSON PROS _• J BLOCK WITH REMOVABLE PIPE CLAMP •r - •-r • x.f UNDISTURBED NATIVE MATERIAL(TYP.) \`_.. v ti+• .P�� -I:_... ' WIRE STAPLES t` , 1" r fco PLACE CONCRETE ANCHOR BLOCK 1 ` —W •!•.•. �_, ,iii I WATER MAIN TO BE INSTALLED UPHILL OF EROSION 1 ! I ' CONTROL SYSTEM ;T y AGAINST UNDISTURBED NATIVE MATERIAL •- ••• 1 4 o '-.� :, ,,• I I /4 STIRRUPS 0 6 O.C.EACH WAY 0-0 1 6'SPACING - 12'WIDE x 55"LONG x Yi THICK r 20'-0" •• TYPICAL APPROX. MIN. BENT FLAT BAR FOR PIPE CLAMP, DIAMETER=.091"MIN. 1 0 +1•I� '= 6'-0" PROVIDE(4)iN'DIA.HOLES EACH j SIDE FOR V.V..DIA.x 12"LONG ELEVATION MEW PLAN VIEW STAINLESS STEEL ANCHOR BOLTS `(I TRENCH DAM _ I `-6"OVERLAP—..I y' I .a. 7.. NOT TO SCALE f I / 1� l 4' 12" 12'112" 12" •••--- WIDTH EQUAL TO DISTURBED AREA EDGE OF TRENCH EXCAVATION TO DIVERT SURFACE WATER FROM TRENCH AREA EROSION CONTROL MATTING roi— \ PROVIDE 12"BERM OVER TOP OF STEEP SLOPE TRENCH ,y;,- RESTRAINED JOINT PIPE " NOT TO SCALE '' !'"' \ MATTING NOTES: ice„ H i '4"DIA.DRAIN PIPE, I), F 2'-0"FROM TRENCH EXCAVATION _ ,DIVERT SUB SURFACE WATER ,,� +t,, . EXPOSE DRAIN PIPE AT SURFACE 1.EROSION CONTROL MATTING TO BE EQUAL TO AMXCO CURLEX BLANKETS. 1 6 ---1 FROM BEHIND TRENCH DAM TO s� ��\ -'THE SURFACE 2.MATTING TO BE INSTALLED OVER THE DISTURBED ENTIRE AREA ON ALL -"\ ; `�\\ DISTURBED SLOPES z0 �� � ' r� ��\�\.. CONCRETE ANCHOR BLOCK AT 100' 0"SPACING OC. 3.INSTALL FOUR STAPLES ACROSS THE START OF EACH ROLL OVERLAP ce '+u ' --1:i M1 T .LE r " . 25'-0" TEMPORARY EROSION CONTROL FENCING,INSTALL ADJACENT ROLLS A MIN.OF 6-INCHES. SPACE STAPLES AT 6 FOOT 1 I I AT 50' 0"INTERVALS ALONG CONSTRUCTION AREA INTERVALS ALONG THE SIDES AND CENTER OF EACH ROLL :� Ili,"�'+++•I id,, --, 1 C MAINTAIN AT LEAST TWO LENGTHS OF FENCE DOWNHILL ALTERNATE THE SPACING LOCATION OF THE SIDE AND CENTER STAPLES. j i1"_ m II F f J� Eu` �y OF CONSTRUCTION AREA.REMOVE FENCING AFTER MATTING 4.MATTING TO BE INSTALLED OVER VEGETATION AND EROSION CONTROL PLAN VIEW V P<)' IS INSTALLED UPHILL OF FENCE. TRENCH DAM MATERIAL TO PREVENT THE BERMS AS REWIRED. PASSAGE OF SUB SURFACE WATER ALONG P9�N� 11.1 W 5.INSTALL NETTING ON TOP AND FIBERS IN CONTACT WITH THE SOIL. THE EXCAVATED TRENCH,SEE SPECS. ,/Cl.N2. NOTCH TRENCH FLOOR AND WALLS 4> TO INSTALL TRENCH DAM MATERIAL PIPE ANCHOR BLOCK • EROSION CONTROL MATTING INSTALLED OVER //"COMPLETED WATER MAIN INSTALLATION DOWNHILL f. OF CONSTRUCTION AREA. NOT TO SCALE INSTALL 2"x4"x 5'-0"LONG WOOD STAKES ONE FOOT WIDE x 2"THICK LAYER OF AT 6'-0"ON CENTER,BURIED 2'-6"DEEP. STRAW OR MULCH UPHILL OF FENCING. a a i z a 0 o EROSION CONTROL FENCE FABRIC EQUAL TO , ,n g EXXON CIF-400E,WITH AN EOS=0.15mm. it �, c110 TRENCH DAM AT 50'-0"SPACING O.C. SECURE AND SUPPORT WITH 2%2%14 GA WIRE FABRIC TIED TO STAKES USING STAPLES %�` VIM XIS YIx xtr 1u xry 111N1(IM L1 IL'i 111M1�I11M11 11 k i(:L 1 L'I 1 1.1(U1111A11( 1, ,•/•'',"• '� TO BE PRO(TY iir SLOPE P.) AD WALLS EROSION CONTROL PLAN J -/ _.....1 STANDARDS(TYP.) EXCAVATE A 6"x 6"TROUGH, ,I 1 I �� i 1 1 NOT TO SCALE LAY FENCE FABRIC IN TROUGH i _�� _ ���• AND BACKFILL WITH PEA GRAVEL. I --4 TO TOP ��� 1- LAY I �� �(TYP. 1� i .. .. ENGINEERS 11 I PLANNERS TEMPORARY ,a,.:.....,"�`l1 4}, SCIENTISTS MAR U 99 [. n1�`T7 R e x 6"ABOVE PIPE ��7�1U `+t •i U; REDMOND WENATCHEE OLYMPIA (206)869-1488 (509)663-0150 (360)705-0628 4.4 EROSION CONTROL FENCING I I >ti4< ,Y; (BDD)720-8052 (800)721-8052 L800 722-8052 DEVE .` :` - ,`"n DRAWING IS NOT TO SCALE L�P�VIF�Y PL4NN! irR A•F•'rZs 6"BELOW PIPE IF BAR IS NOT 2"LONG 0 1" 2" CITY OF R[NT� NOT To SCALE t . 1A_4A irgi�pp�� NG POLYETHYLENE WRAP AROUND PIPE(TYP.) it:KistitabZI -0.�rp•��r� W�i�ffi N RENTON/KCWPCD/ o� 3'-6" MAX. CEDAR RIVEg:T EE G (TYP.AT 16"DIA.PIPE) FOUNDATION MATERIAL, IF REQUIRED BY ENGINEER(TIP.) WA • ' INV P SLOPE TRENCH SECTION CO� ;,? 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I'!'y�g� ` : ' .//a/;i /,h'�r //,/ rry, /,r /F//:1 l /rr r 4 �r " •/:! h /i.Fl%�/y/l f.//NI/j"1 N/� iH:y fN,.//',f,.: �rf�:/' '//.,J r .,, GRADING .sb/y,,,,i0fy/// a f ,�/F bf 0044�%,0.,0„� .47 4 • CONSTRUCTION SITE G yhi'y h,.1 ,', rA yryl .,, //�h, ,4, ,ff/r fbSh S§,,,o,vim, /�l/�§l „ § //� . � / �/4/ y�/�,// ,{:;. ,:' ENGINEERS F� „I � � PLAN �� � D cm � , ,/. 1'=z0'-o• PLANNERS �� EX--ISTING SITE GRADING PLAN REDN9-1 WENATCHEE OLYNPIA ���� 1•=20'-0' (206)%9-1488 (s09)ss3-o150 L4i3 os-oszaLtI (800)720-8052 (800 721-8052 22-8052DRAWING IS NOT TO SCALE • •••�� •��,�IFBARISNOT2'LONc 0.62e..'•' =• ELOPMENr RENTON :77 WPCD�i- ,.•,, PTONN�Nu CEDAR RIVE .= "ter:L- NG +ial DING PLAN a: wpm, aarm art SCAM nor me WI s�r 195.020 CRUX_PO4 DAD GP FEB 29,1996 SHOWN 20 R03 5018 • WETLAND VEGETATION RESTORATION,ENHANCEMENT • WITH NATIVE SPECIES,AND MONITORING CONSISTENT r) i 4 i s5 WITH RENTON MUNICIPAL CODE CHAPTER 4-32 i y/,� 10 i/r/�/ /%5's I ir55 • V� /fFibf / ON-SITE WETLANDS AND STREAM , i /f RESTORATION WITH MONITORING CONSISTENT MATH REN TON MUNICIPAL I 11' . ( t 4rirh/qJ3 q i ,¢t/,GINAL CONDITIONS CODE AFTER PPEUNE 4-32 AND TPLACEIMENT ) t CHANNEL ENHANCEMENTS TO PROVIDE SALMON SPANNING AND 4 REFUGE HABITATS SHALLOW EXCAVATION(3')TO SAND AND SILT TO ' 1 I I I i EXPOSE NATIVE GRAVELS AND ACHIEVE GROUNDWATER FLOW , I II • OII il I� • _ �"- DEEPER EXCAVATION(6')TO PROVDE -�N El i y�- IMPROVED GROUNDWATER CONNECTIONII I , IA 03 ,... 7Y .T f— ., �IL� -- '�-'_ - —"� 77\ Q ® y f f' +C I ` I .: I it _f �P : "�•�� —� 0 f Ng�_,� i • .peLAN., aapae n, f I. -! i� 'ice►• .� —'` .N1 ,I Cji :.�e.1annnnpnnnea O (' ,,; al ' ' e n e a a 4,n n'A e a e p•0 ." UTILITY PIPELINES AND CONCRETE FISH WEIR / +!±Y.,r �� vv I �p,�ppplpeeGnn.• j f FOUNDATION PLACED 3 FEET BELOW RIVER GRAVEL 1 .41I,1h, _.__ _'' '-- O f f' : p.�peenneae.NL nG BED RESTORED WITH NATIVE GRAVELS .� _�-w f f3',- J --�' Alli 0 0 ?CPr. Ali f ' I, t r., cnannn,) 7 -- -- " r.f f ►it f � 3 f f a Ai , . �1�:�.��.,i�Ji�� -e{ - to ° •. �'"`- — f _ ffff', f4fffffff f.f y, • ,� _ ff . y I L y ++�T-wTmaffffffl f7fl -f-/-1 ♦ 6 I� _ -.Iffff � �.. :e GS �I: • � ' C I I L pnenG.NA SG / f f f di r . - or/ if fffff a fff � ' ` y . n�n6.16'S , L�L ... t- .•••..! ��d `k U . �N n n",e as pe T Q p G — ' a-c.L gii4i%y� i t��'% i/7//i�i9%/ ._ „i r /l/ r,rr, ,11.I1- ?r l( _)-- t 4f, ty , i,rrl,/y a ri,/, _ _ - - --- 111111W I• :%' ',, ', : PATHGRAL ROAD I , 7:, , P , ICI LEGEND fIf CLEARED VEGETATION AND UTILITY EASEMENT O !!0 t NOTE: LOCATION OF WETLAND E IS APPROXIMATE �� ✓�' IMPACTED WETLAND /, rr /%k�� 'L�%�r ENGINEERS RECEIVED UNDISTURBED WETLAND AREA RIVER MILE AT UTIUTY CROSSING IS 3.1 , - NNERS SCIENTISTS REDMOND WENATCHEE OLYMPIA D t Kx` „ + (206)869-1488 (509)663-0150 (360)705-0628 ",\ _� 1 9� /Y�( /Y'I RIVER EXCAVATION AREA (800)720-8052 (800)721-8052 (800)722-8052 DRAWING IS NOT TO SCALE - '.�'�'.S+a IF BAR IS NOT 2"LONG �'�IV E'''''':'''' `N, PLANNING / IN-RIVER WORK AREA , RENTON/KCWPC9/ iP swoN FIRM. 100 YEAR FLOW UNE CEDAR RIVER I 0-•"' ' _ IA ORDINARY HIGH WATER MARK ETiicgT•• ORATION PLAN JOB 110. R[ DOVIR lit-Nh D OAR Sal ROT PIK 110. 9iQT 195.020 I CRUX_PO5I SCH 1 GP 1 FEB 29,1996 I 1" = 40' _I 20 I R06 I 60)8 • \... :\ \ .•'; • � *TRAM") DOMINATED BY SAIAIONBERRY, CATEGORY 2 ' j ' \ DISTURBED \ MIXED FOREST RED ALDER,AND PIGGYBACK PLANT RIPARIAN WETLAND DOMINATED BY • r UPLAN� BIG-LEAF MAPLE, MODERATE TO LOW FUNCTIONS ClANT KNOTIYEED AND SALMONBERRY $r • MODERATE FUNCTIONS - I,4,1, • DOMINATED BY RED CEDAR, 'i [ o p Lli -, SCOTTrS ROOM HEMLOCK • • • '"III • ,,,", 'i , ``~ 0`i "'� Q I ,_ 0.05 ACRE 1I • �7 [ 11 < `�,,r' .., ,, s`" •i-f - 1 / t _ "b 04 ACRE _� 411.04L III I 0.03 Al JJ - ss 1f 0 _,- 44.E r ,41, = : ‘ Asti-3-`; j �tlT>•. '�=,.-a 0 0 1e! . .,`;. s�� ,3• ±� I �� tt� t,1iLt 6• .�.�� ..,_ <,, itv 4 ! :Y�-. tlss ifs/1-1g1 ./t' �' . x ....,.. , : / . r ,,•;. ........... __ / ' T c rJ. l•i,L,L JJf i.RJ Gft.'�`r `F:'"5: Er 'J • a ur rn,,, # I : : .;..•."-- ,..._ .�s .i 0.07ACRE lftflf J IB �I I f10 \ Ji% ff/III IVI i o.25 ACRE la / \ I \ ' , "� .....5-1ZZ) , '''. '. ';v„10_. ' '.. \' '., , ,., , `.; .,. C, ,,. ', ', / • .... „ v 0.35 ACRE I I1 I I V 11 • \\ v) ' ,1 / ; f - Yi. 5� ,Y� CLASS 3 STREAM • k / ¢ `4 /• • C-D • I •i / MA /.- ai a { CATEGORY 2 • • j ` !`I r,' r •� -/ �1 -" SPRING-FED WETLAND DOMINATED • ,'o • r. "\ / , ...r. r/ BY VINE MAPLE,SALMONBERRY, , f. i/\ / i ...... / WITH DOUGLAS FIR,RED CEDAR, . � 1 .. / •�..... MAND HEMLOCK • •ODERATE 0 I E LOW FUNCTIONS DISTURBED UPLAND DOMINATED BY SCOTT'S- BROOM AND RED ALDER LEGEND 111iP`9tt fffff/. CLEARED VEGETATION AND UTIUTY EASEMENT NOTE: LOCATION OF WETLAND E IS APPROXIMATE D C IMPACTED WETLAND UTIUTY CORRIDOR WILL BE REVEGETATED OQ �. CONSISTENT WITH RENTON MUNICIPAL CODE CHAPTER 4-32 ncNy�-�' UNDISTURBED WETLAND AREA RIVER MILE AT UTUTY CROSSING IS 3.1 _� rR�C�1uEQ RIVER EXCAVATION AREA rr, r; ENGINEERS PLANNERS MAR L 0 SCIENTISTS ''�{t� 1996 REDMOND WENATCHEE OLYMPIA a� AP a 4.t.,' IN-RIVER WORK AREA ((206)869-1488 (509 663-0150 (360)705-0628 �1- (800)720-8052 (8D0 721-8052 (Bo0 7202-8052 DEVELOPMENT P DRAWING IS NOT TO SCALE CITY OF RENTON ING F.I.R.M.1W YEAR FLOOD UNE R BAR IS NOT T•LONG 0 • 1" ENTO 2„ ORDINARY HIGH WATER MARK G - RENTON/KCWPCD Il CEDAR RIVER ;u 1/Q WI 4 X 0G AREAS MIA 111 DOM 111.ft OM PLOT Dit NO _- 195.020 I CRUX_P06 I SCH I GP I FEB 29.1996 1 1'=100' 1 20 I R07 1 70,8 S.W.D.EASEMENT I '-- WORK LIMITS FOR WATER MAIN 5 �.. WORK UNITS FOR SEWER SIPHON / '1 ray ., I I CENTER OF CHANNEL(END) '- EXISTING WETLAND SEE WETLAND I NORTHING 175,423.7 FT. — �_____ RESTORATION PLAN 1 I I ' ( FASTING 1,669,686.1 FT. I _ ELEVATION 53 FT. _ .„___ , :, - �� -- EXISTING EXISTING CHANNEL -�i ����- �" ��- (WIDTH VARIES) I I I I .-• •� �•- _• DIVERSION THROUGH • • r/ ' EXISTING CHANNEL e ._.- �'�'� '' FOR WETLANDS AND / �' • / _ SPAWNING GROUND __ f� .r �. -�'� ENHANCEMENT • F�0 ; r/ .yam �' -I11 • - �111/— - � A • . 1 300 .., . ". , , , •• . , • . . . , . .. ____. . • ytlt y a - .-;•',. • ' Ir. t. w �. p". . . •r,.r• ..:,...:::,.:: . . .. - � 1. DIVER4CN DAM �,s • �_. / �� TOP ELEV.�55 FT. � .. i" - .O r -... .... - ...,., .: - CHANNEL ..L.: A jj I '� I • O q ! , :. : �.--� WATER INMTABLE -, DIVERSION DAM • - .. .. . • I TOP ELEV•,55 FT. , IIPligliOk _ I • is , ' . - .---. II -f it :,' F---,--I .:1''' ''1-'----xV — — i,,•;,:. , 0, L., 1 1 1 ,..; . . . . .• .•....... ..„..•. . .. .. ,... .. r , ,. . • . - .: _ r = ,- . . EXISTING ACCESS ROAD • 1 .• �,_..-•-�� i �;� ��l�r COORDINATE WITHESNI)FOR ` F'11' / • r % EXISTING UTILITIES NOT SHOWNACCESS PERMISSION AND--~ • LIMITATIONS. I I ( p r • IP II 1I 1 CC CENTER OF CHANNEL(START) C�7 • EASING ' ... 690N 55 FT • .. .. . • • - NORTHING I I I I IT TING 1,6 .. ._ ELEVATION 1 1 1 I I I EXISTING WETLAND DO NOT DISTURB EXCAVATE A 8"x 12'TROUGH,LAY SILT FENCE SPOILS FROM CHANNEL LEGEND IN TRWGH AND BACKFlLL WI1H WASHED ROCN ON CONSTRUCTION-PLACE BO7H SIDES OF FENCE AND ON SURFACE. ALONG EDGE OF CHANNEL GEOTEXTILE DO NOT DISTURB SURROUNDING VEGETATION. AND IJNE WITH FABRIC. FABRIC — ELEVATION 55'AT UPSTREAM END CONSTRUCTION UNITS EROSION CONTROL FENCE FABRIC EQUAL TO ELEVATION 53'AT DOWNSTREAM END EXXON GIF-400E,WITH AN EOS=0.15mm. ER090N � SECURE AND SUPPORT WITH 2"X 4"BY } \ UNITS OF DIVERSION CHANNEL 5'LONG STAKES,6'ON CENTER,BURIED ^'?�,, t.a; i531- - WETLAND AREA ti� '7 q r DIVERSION CHANNEL NOTES; 2.5.INSTALL 2•BY 2•BY 14 GAUGE �f' ,` sx4 1.DIVERSION CHANNEL WILL GENERALLY FOLLOW EXISTING WIRE FABRIC.USE STAPLES OR WIRE RINGS \�/\ �s c^? ;y''•:s-F'+ '� a', TO ATTACH WIRE TO FENCE \�/.•,,\ w.'LC;;` �`Y-.CS '?~ t:�, ,`.. � ` / /\J-` \ \% F,c,,� �Tjy c 1ZC�' ,i:,.'„_.�,?�,. `•+ CgJTOURS. PRONDE CONTINUWS SCOPE. \ /• t• t I- I 2.A MINIMUM DEPTH OF 3'WILL BE MAINTAMIED \ \�\�"�\� +'• �'F.'!"jP ..PL•1,••. �/1•+ �< �-'. I�.�..:"1 `!$x: .S t}i 1VY THROUGHOUT THE CHANNEL. /���� \\��\\�,C�J` _i i,__•tip_,�_,:�. .�. •• ti ',. FLOW= 130 tT"S r , ••u . . •w` •u rv::'�._ \`' ( -.{;7./' ;{' t"' t"' ,( Vy..l ri. - 'ZVy! yI �y- 1y.! ysl •y,r 3.CHANNEL IS TO BE LINED N7TH A GEOTEXIILE FABRIC •,, ,tiC, - v ` To MNINrzE SILTING. ENGINEERS /, ,ter 7•1 �.r PLANNERS /\/�X�\�\,/�/�j� STRAW OR MULCH,2'DEEP. !�•- THRWGHWT DhiERCHANNELL VTO OLD GEOTEX LE FABRIC SCIENTISTS y,.� // /�\ / \\ ONE FOOT WIDE STRIP UPHILL OF FENCNG. 7; IN PLACE. REDMOND WENATCHEE OL}1,IPIA MAR o F q(�QQ \�\\� .1�'�-,�j'�;ti"\;r'\;�'�;�;��i- (206)869-1488 509 663-D750 (360 705-0628 • '•Y'� �+ I�7�7p ,J � 5.CITY WILL FLAG CENTERLINE OF CHANNEL PRIOR TO (800)720-:05o:2. 800 721-8052 (800 7 -BOS � �� ROCJ(S AS NECESSARY .•-, -, .` CONSTRUCTION. �i\ TO STABILIZE FABRIC DRAWING IS OTO SCALE,•. �:,a:•:. : EV G ��/ IFBARIS LONG o•'�'�'=''�'='�'� T,. •'•=•= ELOF�NI CPLAN RENTON/KCWPCD/ vo o� ION EROSION CONTROL FENCE CHANNEL CROSS SECTION CEDAR RIVER l� 'I:L�t, _ NOT TO SCALE NOT TD SCALE TEMP. �' t-�+.i► WI - 'IMENTATION CO - : & DRAINAGE PLAN .AfB W 11F EI:W RE`,C b DATE SCALE P 0T DLC x0. SNRT 195.020 I CRUX_P10 I SCH I GP I FEB 28.1996 I 1"=40' 140 I ROB I 8 or -•4:10', / 17-40.0.:**Its-1:-:1::****::.***:.:*******.:40:::.4.-sk*:::::::„... v..,.... .t..s.,--,‘-,- , / •ii X I `� � / � � . � 4 ,ram 10 A ,.„, ,O, - 1.10F 17..,........i.-4.41-_...-11'iliftli,,,,,,.;,:auisisv30::.-Aw.:.-isiosf:1 '"...wik" -...iti-4.4 . 14000000W004 s'•••• — ' > '5 ,0A _ 1- ......- ..''.-.......,.. .-7......„ ,,,, .,x„ „ow- rw-.4 .03-......eit. ---,:sys*::::***::Aws:sow% -,•:;,-0.a. .0001....7-. '//, /,, / 4re % la#,Or+ ''. / ./ i �\ vas `\w. .. ""• /- / / / Y BARK'::::: •- \� ���:� `\ .,w /.�/. / r / / / �i / / /� / fir• :'a.�\ / / / /// / .... ......_ i-ice / �. ����..c. •••c.---:;•;,.;� ....._ _�` � ��or/ / // / // / / /�/ /// // / �/I� may!/ ` ''• :a::�Sca:vSe..:= �� '•.►i Moir a�/ /�////, // / / /// r� % / // / , .0 . -;, / / / .. ...., ..... ........,_....,.._. ._. __.._I.... ..... y "' ��� �.�0.✓ /`�� `� PROJECT CORRI D R /�/ i /�/i�j/ i /i,�// /�/i/�%/// ��jj�%.��/ �% 3 `\!. / //////7/// /////J.�//// ////i�%/ //%/ /-/ i � � 4%I/ - ` �� �%,„ ,MAPLEWOQD G.OL :;:CO,,, .': I jam/ / � � �� . 0 #///�/ / / �////.////////////4/// //�/, %��I/ ��Ij%�% . .�j� 1/////////;�// //// /i////////%fir/ /, j % fr %i'/ j//%�///� i/%//i/XS //j///// //�///� / - '.9 , /i id.//i///////.6//,,/4./di',//////6/,d/�//,f ►rx LU4-%4,- (7L7,Ct> ;y CITY OF RENTON .211 '' Office of the City Attorney Jesse Tanner, Mayor Lawrence J.Warren June 21, 1996 The Honorable Fred Kaufman Hearing Examiner City of Renton 200 Mill Avenue South Renton, Washington 98055 Re: Cedar River Utility Crossing Settlement Agreement Dear Mr. Kaufman: Enclosed is the fully executed, original Agreement re: Withdrawal of Appeal of Threshold Determination of DNS-M of Cedar River Utility Crossing. I apologize for the delay but, as you know, Ms. Whitley lives out of state. Very truly yours, Z etta L. Fontes ssistant City Attorney ZLF:ldm Enc. cc: David Bricklin Desmond Brown Post Office Box 626 - 100 S. 2nd Street - Renton. Washington 98057 - (206)255-8678 AGREEMENT RE: WITHDRAWAL OF APPEAL OF THRESHOLD DETERMINATION OF DNS-M OF CEDAR RIVER UTILITY CROSSING File No. : LUA--96-027, CU, ECF, SM, W The Appellants, Lee and Marilyn Whitley, and the Proponents, City of Renton and King County Water Pollution Control, hereby agree: 1. Proponents seek to install new and replace old utility lines under the Cedar River . 2. This crossing will be located near river mile 3.1, and approximately 280 feet down river from the Whitley property. 3. Proponents' will install a concrete encasement to protect the new utility lines. 4. Appellants filed an appeal of the threshold determination of"DNS-M" on April 15, 1996. 5. At the time of the appeal, Proponents' project called for installation of the concrete encasement in such a fashion that its top would be at the thalweg of the river bed. 6. Appellants have agreed to withdraw their appeal, in consideration for the project amendments reflected herein. 7. Proponents will install the concrete encasement in such fashion that the top of the encasement will be two feet below the thalweg of the river bed. 8. Although the proposed project did not call for them, the Proponents will not be adding or installing any protrusion, or embedding any conduit or tubing to the concrete encasement for the purpose of attaching or accommodating a fish weir at a later time. Dated: -72A`%curte , 1996 c A avid Bricklin, Attorney for Appellants Zane L. Fontes, Assistant City Attorney Ci of Renton Desmond Brown, Attorney for King County Water Pollution Control „v, ,„ yiyS 1B B90 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washington 98008-5452 • (206) 649-7000 May 21, 1996 CITY OF RENTON Abdoul Gafour - Water Utility Engineer RECEIVED 200 Mill Avenue South Renton, WA 98055 MAY 2 2 1996 L?CV vreva lV1 �CPfV1C:�$ DIVISION Dear MR. Gafour: Re: City of Renton Permit # LUA-96-27 /(01.4lSA‘ City of Renton/Water Utility - Applicant Shoreline Substantial Development Permit # 1996-NW-20061 The subject Shoreline Management Substantial Development permit has been filed with this office by the City of Renton on May 20, 1996. The development authorized by the subject permit may NOT begin until the end of the appeal period June 10, 1996. You will be notified in writing if this permit is appealed. Other federal, state, and local permits may be required in addition to the subject permit. If this permit is NOT appealed, this letter constitutes the Department of Ecology's final notification of action on this permit. 'ncerely, im Gavin Environmentalist Shorelands and Coastal Zone Management Program JG:jg RECSDP.WP CC: City of Renton .,1... 0 AFFIDAVIT OF PUBLICATION Jessica Folkerts , being first duly sworn on oath states that he/she is the Legal Clerk of the A Public Hearing will be held by the Renton Hearing Examiner at F'.is regular VALLEY DAILY NEWS meeting in the CouncilychR4iers on the second floorrof City Hall, Renton, Wash- NOTICE OF ENVIRONMENTAL ington, on April 30, 1996 at 9:00 a.m. to 600 S. Washington Kent, WA. 98032 DETERMINATION consider the Conditional Use Permit. If the a daily newspaper published six (6) times week. Said newspaper is a legal ENVIRONMENTAL REVIEW COMMITTEE Environmental Determination is appealed of general circulation and is now and has been for more than six RENTON, WASHINGTON the appeal will be heard on April 30, 1996 newspaper The Environmental Review Committee as part of the public hearing. months prior to the date of publication referred to, printed and published in the (ERC) has issued a Determination of Non- Published in the Valley Daily News April English language continually as a daily newspaper in Kent, King County, Wash- Significance - Mitigated for the following 8, 1996. 1418 ington. The Valley Daily News has been approved as a legal newspaper by order project under the authority of the Renton Municipal Code. of the Superior Court of the State of Washington for King County. CEDAR RIVER UTILITY CROSSING The notice in the exact form attached, was published in the Valley Daily News LUA-96-027,CU,ECF,SM,W (and not in supplement form) which was regularly distributed to the subscribers The applicant(City of Renton Water Utility Department)seeks Environmental Checklist during the below stated period. The annexed notice, a Review (ECF) and Conditional Use (CU) Permit approval to construct an under- Notice of F n v net ground crossing of the Cedar River for City of Renton, King County, and City of Seattle utility lines.The project will include the con- struction of a Fish Weir foundation. In addi- tion, the applicant must obtain a Shoreline was published on 4—8—9 6 Substantial Development Permit (SM). Location: Near the southwest corner of the Maplewood Golf Course. The full amount of the fee charged for said foregoing publication is the sum of The 15 day comment and 14 day appeal I periods s projeurrently 61 . 76 r and endfor atthi 500 p.mct.will on Aprilrunconc 23, 1996. $ Appeal procedures and the mitigation mea- sures imposed by the City of Renton's Envi- ronmental Review Committee are available L al lerk, �/ leyDailyNews at the Development Services Division,Third Floor, Municipal Building, Renton,Washing- ton 98055.Phone:235-2550.You should be �,,/ e prepared to make specific factual objec- Subscribed and sworn before me this "`day of "_--� 19/7 Co bons. ,„,„................. 6d,ii,L,-, ,r)-1 _ Y4 ,z -..E•'pj�'.•..;, Notary Public or the State of Washington �, �- , v "(31 \ residing at Prt tn'n- /I �.. ' 'k.:J��OT AR k .• �� King County, Washington ti k ���vo 'sx 'a�eus��riLz 01. = 1 ���F 3 .�Z•,\���or, AFFIDAVIT OF PUBLICATION Jessica Folkerts , being first duly sworn on oath Nu.Ict or rutiuu HtAHING states that he/she is the Legal Clerk of the RENTON HEARING EXAMINER RENTON, WASHINGTON A Public Hearing will be held by the Ren- VALLEY DAILY NEWS ton Hearing Examiner at his regular meet- ing in the Council Chambers on the second 600 S. Washington Kent, WA. 98032 floor of City Hall, Renton, Washington, on a daily newspaper published six (6) times week. Said newspaper is a legal April 30, 1996 at 9:00 a.m. to consider the following petitions: newspaper of general circulation and is now and has been for more than six CEDAR RIVER UTILITY CROSSING months prior to the date of publication referred to, printed and published in the LUA-96-027,CU,SM,ECF,W English language continually as a daily newspaper in Kent, King County, Wash- This project consists of the installation of five underground utility components, includ- ington. The Valley Daily News has been approved as a legal newspaper by order ing a crossing under the Cedar River across of the Superior Court of the State of Washington for King County. the Maplewood Golf Course: City of Renton The notice in the exact form attached, was published in the Valley Daily News water transmission main; King County Water Pollution Control Division Cascade (and not in supplement form) which was regularly distributed to the subscribers siphon sewer replacement; one empty cas- during the below stated period. The annexed notice, a ing for future utility crossings;and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Notice of Public Hearing Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe.The applicant is also seeking a Shoreline Substantial Development Permit (SM) for the work that will be conducted within the river and within was published on 4—1 Q—Q 6 200 feet of the river.Location:The project is located in Section 21, Township 23 North, The full amount of the fee charged for said foregoing publication is the sum of Range 3 East, W.M., King County, Wash- ington. The utility crossing of the Cedar River will be near river mile 3.1, within the $ 61 - 76 City of Renton, south of Maple Valley High- way and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope g Clerk, V ley Daily News and up to the top ending at Royal Hills Drive SE. Loegal descriptions of the files noted �q� 19 / above are on file in the Developmentp Ser- Subscribed and sworn before me this 1—'day of A.a•l b vices Division, Third Floor, Municipal Build- ing, Renton. All interested persons to said petitions ��,.w..� y�_ =P� are invited to be present at the Public Hear- !� .. 4210r.Letfi. 7 ing to express their opinion.. ; �00, �N M �Fjy� Published in the Valley `'lily News April .• •.......• /� 19, 1996. 1459 I ��*•.. .' t�N ,f-,oi Q i Notary Public or the State of Washington Q�;�� 4 cP\ residing at A.ubur-n y�i.a-M �:-) JT A R. cot King County, Washington • k m * PUBOCCOi . 4 `,77.:t`•z@evised 7/92^>•• k� CITY OF RENTON CURRENT PLANNING DIVISION AFFIDAVIT OF SERVICE BY MAILING On the 1''15 day of , 1996, I deposited in the mails of the United States, a sealed envelope containing Skncv-e k t v& p€ \t documents. This information was sent to: Name Representing °f eel°3} A a.o G ((h-LoUX Ma.144. (Signature of Sender) STATE OF WASHINGTON ) ) SS COUNTY OF KING I certify that I know or have satisfactory evidence that 1/ 91• CCCG-612 signed this instrument and acknowledged it to be his/her/their free and voluntary act for the uses.And purposes mentioned in the instrument. �����.' d� Dated: 6- /7/ ••z '�6- -- / Notary P is in an f r the State of W irg/on----- Notary rint) /3'1/4G-i4 k� My appointment expires: Gj lf,F / 1 Project Name: Loa(_•__, �L ctioSS Project Number: ^O 21 ' Lu, S NA"l NOTARY DOC JIM • ;; : CITX OF RENTON • Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator May 17, 1996 State Department of Ecology Northwest Regional Office 3190 160th Ave. SE • Bellevue, WA 98008-5452 SUBJECT: Shoreline Management Substantial Development Permit for Cedar River Utility Crossing, File No. LUA-96-027;CU;ECF;SM Gentlemen: Enclosed is the Shoreline Substantial Development Permit for the above referenced project. The permit was issued by the City of Renton on May 9, 1996. We are filing this action with the Department of Ecology and the Attorney General per WAC 173-14-090. Please review this permit and attachments and call me at 277-5586 if you have any questions or need additional information. Sincerely, Mark R. ell Project Manager Enclosures: Copy of Original Application Affidavit of Public Notice/Publication Site Plan SEPA Determination Hearing Examiner's Report and Decision Legal Description cc: Office of Attorney General City of Renton, Transportation Systems City of Renton, Utility Systems City of Renton, Code Compliance Inspector Applicant DOELTR.DOC 200 Mill Avenue South - Renton, Washington 98055 CITY OF RENTON SHORELINE MANAGEMENT ACT OF 1971 PERMIT FOR SHORELINE MANAGEMENT SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT APPLICATION NO.: LUA-96-27,CU,ECF,SM DATE RECEIVED: March 5, 1996 DATE OF PUBLICATION: April 8, 1996 DATE APPROVED: May 9, 1996 DATE DENIED: N/A TYPE OF ACTION(S): [X] Substantial Development Permit [ ] Conditional Use Permit [ ] Variance Permit Pursuant to Chapter 90.58 RCW, the City of Renton has granted a permit: This action was taken on the following application: APPLICANT: City of Renton/Water Utility PROJECT: Cedar River Utility Crossing DEVELOPMENT DESCRIPTION: The project consist of the installation of three underground utility components, including a crossing under the Cedar River and across the Maplewood Golf Course; City of Renton water transmission main; King County Water Pollution Control Division Cascade siphon sewer replacement; and one empty casing for a future utility crossing. LEGAL DESCRIPTION: Copy attached. SEC-TWNP-R: Section 21, Township 23 North, Range 5 East, W.M., King County WITHIN SHORELINES OF: Cedar River APPLICABLE MASTER PROGRAM: City of Renton The following section/page of the Master Program is applicable to the development: Section Description Page 5.03 Conservancy Environment page 21 5.04 Urban Environment page 22. 7.18.03 Major Utilities--Specifications page 39. 7.18.04 Local Utilities--Specifications page 40. SHSUBDEL.DOC City of Renton P/B/PW Department Shoreline Substantial Development Permit '" Page 2 of 3 Development of this project shall be undertaken pursuant to the following terms and conditions: 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. 2. A construction plan indicating haul routes and hours, construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted to the hours between 8:30 a.m. and 3:30 p.m. unless otherwise approved in advance by the Development Services Division. 3. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m., Monday through Friday. Saturday work hours may be arranged with the Development Services Division but no work hours in excess of the weekday work hours will be permitted, and no Sunday construction. Any request for longer weekday hours or weekend hours must be submitted in writing in advance to the Development Services Division. 4. The applicant shall submit a Final Wetland Mitigation Plan to the satisfaction of the Development Services Division prior to the issuance of construction permits for this project. 5. The applicant shall provide an alternative access corridor and work plan that includes, but is not limited to, the following: 1) a landscape element discussing the impact to the existing plant materials between the bike trail and SR-169 and a replanting scheme; 2) an element describing the signing and alternate route plan for bicyclist and pedestrians; and 3) the replacement plan for the portions of the trail surface disturbed by the proposed work. The plan shall be submitted to the satisfaction of the Development Services Division and the Community Services Department prior to the issuance of construction permits for the project. This permit is granted pursuant to the Shoreline Management Action of 1971 and pursuant to the following: 1. The issuance of a license under the Shoreline Management Act of 1971 shall not release the applicant from compliance with federal, state, and other permit requirements. 2. This permit may be rescinded pursuant to Section 14(7) of the Shoreline Management Act of 1971 in the event the permittee fails to comply with any condition hereof. 3. A construction permit shall not be issued until thirty (30) days after approval by the City of Renton Development Services Division or until any review proceedings initiated within this thirty (30) day review period have been completed. tanning/�u tlin u Jblic Works Administrator Date SHSUBDEL.DOC City of Renton P/B/PW Department Shoreline Substantial Development Permit Page 3 of 3 THIS SECTION FOR DEPARTMENT USE ONLY IN REGARD TO A SHORELINE CONDITIONAL USE OR SHORELINE VARIANCE PERMIT DATE RECEIVED: APPROVED: DENIED: If Conditional Use, Section of the City's Shoreline Master Program authorizing the use: If Variance, Section(s) of the City's Shoreline Master Program being varied: This Conditional UseNariance permit is approved/denied by the Department pursuant to Chapter 90.58 RCW. Development shall be undertaken pursuant to the following additional terms and conditions: Date Signature of Authorized Department Official cc: Attorney General's Office City of Renton, Plan Review(Neil Watts) City of Renton, Surface Water Utility(Ron Straka) Applicant SHSUBDEL.DOC % _627, 0 94 EA Lee and Marilyn Whitley 969 Shelton Avenue S. E. Renton, Washington 98058 • May 1, 1996 Abdoul Gafour & Staff. Planning, City of Renton, 200 Mill Ave. S., Renton 98058 Zanetta Fontes, Attorney, City of Renton, P.O. Box 626, Renton, 98057 Gene Peterson, Daniel Erin, Jeff Clayton & Paul Szewczykowski, RH2, 8383 158th Ave. N. E. Suite 200 Opportunity Bld. Redmond. Wa, 98052 Stan Hummel, Desmond Brown & Many other Staff, Metro Exchange Building. 821 Second Ave. Seattle, Wa 98104-1598 George Schneider & Rand Little, Seattle Water, Management and Planning Dexter Horton Bld. 11th Flr. 710 Second Ave, Seattle, Wa. 98104 Roderick Malcom & Eric Warner, Muckleshoot Indian Tribe, Fisheries Department 39015 172nd Ave. S. E. Auburn, Washington 98002 Dear People: This letter is to let you know how pleased we are with the agreement made this morning regarding the de-coupling of the fish weir base from the river pipeline crossing project. It is also to let you know that I was also very impressed with the care and professionalism taken during the negotiation process. I am very much aware that our recent involvement in the permitting process slowed your projects. However, after you have left the area we will be living the remainder of our lives with the results. We are all aware of the difficulties incurred and cumbersome process of coalition building and partnering which is now the norm for public projects. As we all gain more comfort with these new processes, recognition of the importance of acquiring partners who are prepared to move forward at the same rate as the lead project will become paramount. The pipeline project is well-developed and the planning at end stage, the weir project is presently not at that level. We continue to be supportive of the pipeline crossing and wish you success in its completion. We are concerned about the proposed fish weir. We recognize the much diminished sockeye run and like all, residents along the river, would like to see those supplies replenished. At the same time, we are also concerned about acquiring a neighbor who has not fully studied the use of the land in our residential area 4is-a-kis other sites nor engaged the neighbors during the planning of such a project. Page 2 Therefore, we ask to be informed as early as possible in the planning process for the site selection and construction of any new Cedar River fish weir projects in or near our neighborhood. We also request that our name and that of our neighbor Hank Waffle be added to any mailing list concerning such a project. Our addresses are as follows: Lee and Marilyn Whitley 969 Shelton Avenue S. E. Renton, Washington 98058 Mr. Hank Waffle 1000 Shelton Avenue S. E. Renton, Washington 98058 Again, we are pleased to be engaged with you in the construction of utility projects made necessary by increasing area population, and look forward to continued cooperative relationships with all the agencies involved. Sincerely, band (((Marilyn Whitley 1400 N. State Parkway Unit 7-F (Until June 26, 1996) Chicago, Illinois 60610 (312) 587-0488 04/30/96 21:58 FAX 206 2960198 KING CO.COLINCIL L1001 9G-all •cu ,� D L :„.„.„„ LARRY PHILLIPS Metropolitan King County Council RECEIVED District Four May 1, 1996 M�v ?996NING DEVELOWUt® 1ENT pLgN Mr. Fred Kaufman CITY OFRE'NTON City of Renton Hearing Examiner 200 Mill Ave. S_ Renton, WA 98055 Dear Mr. Kaufman. I am writing to support the City of Renton's Cedar Utility Crossing project which I understand is having a public hearing today. RH2 Engineering and the City of Renton made two presentations on the proposed crossing of the Cedar River 10 the Cedar River Council which i chair. The project was generally well received by Cedar River Council members although no formal position was taken by the Council_ The interjurisdictional cooperation shown in the development of this crossing is exactly what the Cedar River Council hopes to promote in the Cedar River basin, Not only will important public needs he met, but tax payer money will be saved and there will be opportunities for mitigation money to go towards habitat restoration projects in the Cedar River which would benefit the entire basin. Lastly, the fish weir proposed as part of the project is a critical part of protecting the remaining sockeye salmon run in the Cedar River and Lake Washington. Sincer ly, Larry Phillips King County Councilmember King County Courthouse,516 Third Avenue,Room 1200, Seattle,WA 981 0 1-3272 4)Printed on Recycled Paper (206)296-1004 TTYITDD(206)296-1024 FAX(206)296-0198 •U-1/18/ b 111U lb: J5 Y A JIG b-1V 014U vile 110 IP LEE AND MARILYN VIIHITLEY 1400 North State Parkway Unit 7-F Chicago. Illinois 60610 Telephone (312) 587-0488 April 15, 1996 Mark R. Pywell, AICP Project Manager, Project No. LUA-96-027, CU,ECF,SM,W Cedar River Utility Crossing Planning/Building/Public Works Department, City of Renton 200 Mill Avenue South Renton, Washington 98055 Dear Mr. Pywell: We are the property owners(since 1967) at 969 Shelton Avenue S.E., the residence up stream, closest to the proposed project. We have been living out of town for some years, but will return to our Renton home early this summer on a permanent basis. We, along with a number of our neighbors, have been observing the progress made toward the pipeline crossing the Cedar over the past several years. We are impressed with the care and detail taken to write the environmentally sensitive proposals now before you and are pleased that the pipeline project is to be placed under the river. We are supportive of the project and see no reason to object to either of the proposed crossing modes. We do note that construction is proposed to take place on a 24 hour-a-day basis. Even though, it is projected that the project would take only one week, we are mindful that sound is magnified along the river and believe the noise and lights would be very difficult for us during that construction period. Therefore, we request that only two eight hour shifts be used during construction so that we will be able to sleep. We do have the following additional, abiding concerns and ask that they be addressed: 1) preservation of the residential nature of the environment for both humans and animals, 2) access to the Metro Right-of-way road and area, and 3) control of noise and other nuisance factors such as off-road vehicles, beer parties, vechicles being driven into the river, etc. 1. Preservation of residential nature At the moment we are very much concerned about the proposed fisheries project. At first we were told that there would be a fish weir base mounted during the pipeline project for use by the Muckelshoots a few days a year to collect fish during spawning season. However, this week we learned that the weir base would be used by the Wash. Page 2 State Department of Fisheries to build a collection contraption during the fall months, from September through December, to obtain about 25,000 fish for the hatchery at the Landsberg Dam. The project would involve having a trailer at the site with a fishery's employee on site 24 hours a day. It would also mean that trucks would come down the county right-of-way across the river from us to collect the fish at least once a day and, of course, vehicles would use the "road" for change of shift purposes and staff interactions. The ever-increasing encroachment into our residential setting by the Department of Fisheries is of grave concern to us. During the highway construction a very expensive and massive fish ladder was inserted into the bank contiguous to our property. It was done without hearings or notification of residents. Now we are forced to view a very unsightly, dangerous, yet-to-be used, massive cement structure where there were formerly trees and pleasant green vegetation. We have no basis on which to trust the Dept.of Fisheries. We are very worried that this weir base is the beginning of another unsightly, noisy, industrial-like structure and that we will soon be living with more ugliness and intrusion into our residential beauty and privacy without so much as a discussion. We request: A) that there be a full review of fisheries' intentions and that WSDF be required to complete permit and hearing processes for their proposed project, and in addition B) request that approval for the weir base be removed from the project until the permanent residents in the area and the WSDF have an opportunity to fully explore the long-term use of this beautiful space vis a s-is other alternatives. 2) Access On numerous occasions we have also requested that the access road at the top of the bill be properly fenced to prevent nonresidents and vehicles from intruding and misusing the area. During summer months we are often awakened with gunshots, the noise from beer parties, the presence of open fires, people camping in tents and trailers across the river and people from across the river trespassing on our property. We ask that the project include permanently blocking access to the area for unauthorized people and vehicles. 3) Monitoring access We ask that adequate policing of the blocked access area be provided. Since we have had continuing excellent relationships with the project planners, we look forward to meeting you and hope to participate in the discussion of these matters during the April 30 hearing either in person or through our representative. Sincerely, Marilyn Whitley 969 Shelton Avenue AFFIDAVIT OF SERVICE BY MAILING STATE OF WASHINGTON) ss. County of King ) MARILYN MOSES , being first duly sworn, upon oath, deposes and states: That on the 9th day of May ,1996, affiant deposited in the mail of the United States a sealed envelope(s) containing a decision or recommendation with postage prepaid, addressed to the parties of record in the below entitled application or petition. ` / V�� V l Signature: SUBSCRIBED AND SWORN to before me this 4- day of /Wal-- , 1996. -- Not y Public ' f r the State of Washington, residing at ,therein. • Application, Petition, or Case No.: Cedar River Utility Crossing LUA-96-027,CU,SM,W The Decision or Recommendation contains a complete list of the Parties of Record HEARING EXAMINER'S REPORT • May 9, 1996 OFFICE OF THE HEARING EXAMINER CITY OF RENTON REPORT AND DECISION • APPLICANT: City of Renton/Water Utility Cedar River Utility Crossing File No.: LUA-96-027,CU LOCATION: 4000 Block of Maple Valley Highway and Mile 3.1 of Cedar River SUMMARY OF REQUEST: To obtain a Conditional Use Permit to install underground utility components,with a crossing under the Cedar River; also seeking Shoreline Substantial Development Permit for work within 200 feet of the river and within the river. SUMMARY OF ACTION: Development Services Recommendation: Approve with conditions DEVELOPMENT SERVICES REPORT: The Development Services Report was received by the Examiner on April 23, 1996. PUBLIC HEARING: After reviewing the Development Services Report, examining available information on file with the application, field checking the property and surrounding area;the Examiner conducted a public hearing on the subject as follows: MINUTES • The following minutes are a summary of the May 1, 1996 hearing. The legal record is recorded on tape. The hearing opened on Tuesday,May 1, 1996, at 9:10 a.m. in the Council Chambers on the second floor of the Renton Municipal Building. Parties wishing to testify were affirmed by the Examiner. The following exhibits were entered into the record: Exhibit No. 1: Yellow file containing the original Exhibit No.2: Construction drawings application, proof of posting,proof of publication and other documentation pertinent to this request. Exhibit No.3: Project Profile and Site Plan Exhibit No. 4: The hearing opened with a presentation of the staff report by MARK PYWELL,Project Manager,Development Services, City of Renton, 200 Mill Avenue South,Renton, Washington 98055. The applicant requests a Conditional Use Permit for the river crossing and also for the water line which will be going up a steep hill. City of Renton/Water Utility Cedar River Utility Crossing File No.: LUA-96-027,CU May 9, 1996 Page 2 The environmental review has been completed on this project. A Shoreline Permit is attached to this project, and the project needs to be approved by the Hearing Examiner before the Shoreline Permit can be submitted to the Department of Ecology. This application is consistent with the policies of the Comprehensive Plan. One policy is to promote the collocation of new public and private utility distribution lines. This project combines a Metro sewer line and a City of Renton water line at the same crossing, and there will be one additional casing left empty at this time which could be used for cable,telephone lines or anything of that nature. The project is consistent with the zoning code, but large utilities require a Conditional Use Permit. The proposed location should not result in either detrimental over-concentration of a particular use within the City or the immediate area. The City is trying through this project to limit the number of times that the Cedar River is crossed and the flow of the river disrupted. By doing it as a single crossing and at one time, it will help with the environmental impacts and the general disruption to the river. This location was chosen because it will allow for an easy connection between the existing lines and also it is an appropriate location for the Metro crossing. The project is compatible with the adjacent residential scale in that it will be totally underground and will not be seen, but the size of the lines has been based upon the community that they serve. There will be temporary parking areas constructed as part of construction of these lines; however,these have already been reviewed under the SEPA portion. The only traffic would be the occasional maintenance vehicle that is necessary and there should be no significant traffic involved with this project after the construction period. Noise and glare would be limited to the construction part of this project. The applicant will need to re-establish the landscaping and natural vegetation after the completion of the project. Some of the project will be adjacent or within a wetland area, and according to the code the vegetation will need to be re-established as part of the project. Staff recommended approval of the Conditional Use Permit with the condition that the applicant needs to comply with the ERC mitigation measures. ABDOUL GAFOUR, Civil Engineer, City of Renton Public Works Department, 200 Mill Avenue South, Renton, Washington 98055, spoke as project manager on behalf of the City and in cooperation with King County Metro. To summarize the project scope,there will be utility lines installed from the existing trail along Maple Valley Highway to cross the Cedar River and up the steep slope and tying to the existing water line at the end of Royal Hills Drive. During the flood of 1996,the river carved a channel on the south side of the existing bank. This project will excavate that channel to allow a bypass during the damming of the river. An inflatable dam will be placed prior to construction of the bypass at both the mouth and terminus of the bypass. The channel will be excavated and will be sized to handle a flow of 250 cubic feet per second, which is above the expected flow during that time frame of the proposed crossing. The historical records show that the average flow for that time of year is about 125 to 175 cubic feet per second. Any dewatering of the trench will be through a sedimentation pond and then pumped into a King County Metro manhole if necessary. Necessary permits will be obtained prior to doing the work. The pipeline will be installed in the same corridor in a concrete box which is laid in the bottom of the river approximately 6 to 7 feet below river bed. The pipe will be encased in concrete and the top of the concrete casing will be approximately a minimum of 2 feet below the gravel river bed at the thalweg. The trench would be approximately 12 feet wide for the utilities to be encased, and with the sloping on both sides of the box, it would be another 16 to 18 feet on each side of that. The expected duration of the in-river crossing work will take five days and will be within the time window according to the Department of Fisheries permit. The crossing would be restored using native river bed rocks ,) City of Renton/Water Utility Cedar River Utility Crossing File No.: LUA-96-027,CU May 9, 1996 Page 3 and soil. Once the crossing has been completed,the diversion darn will be removed and flow established to the river. A second phase of the contract will be installing pipeline in those casings from both sides of the river. There will be a structure installed within the Cedar River trail to be used as access point to the water and sewer line. The structure will be approximately 40 feet deep with no exposed part above ground level. It will be a totally underground structure. Once the casing is installed and the river bed restored,the pipe will then be inserted into the casing. The King County Metro pipe will continue up the south slope to about 750 feet south of the river bank. At that point there will be an underground structure to divert the flow back into the existing line. The 16 inch water line will continue approximately 90 feet west of the existing Seattle dirt road and it will go up hill at approximately 12 foot cover and would tie in the existing water line at the end.of Royal Hills Avenue. The construction along the steep banks would be protected from erosion through the use of trench down and also retaining wall inside to hold the pipe. The pipe that will be used will be restrained joint type to prevent separation of the joints. An empty casing will be installed for any future use and will be capped. During construction there will be potential lane closure along Maple Valley Highway due to the kind of equipment that will be needed to install the structure within the trail. A traffic control plan will be submitted for approval to the City,and also to Washington Department of Transportation. The existing trail will be temporarily closed during construction of the project. However, it is proposed that a bypass trail be installed adjoining the south portion of the Maple Valley Highway. The bypass trail will be protected from traffic with the installation of Jersey barriers with impact attenuator at both ends, and the degree of slope will be so that it will meet all requirements for Americans with Disabilities Act. The construction phases are expected to take approximately 45 days. There may be two different contractors, the first to get over the river followed by a different contractor. GENE PETERSON, RH2 Engineering, 8383 158th Avenue NE, Redmond, Washington 98052, spoke on behalf of the City, and explained some of the differences between what was filed with the permit application and how that had affected the project, and what was actually being submitted. The biggest change was the Seattle Water Department was not included as part of the final project. One of the other changes was the use of interlocking empty concrete boxes without a top. The contractors can work their way across the river, dig out an area, put one of these boxes in, dig out another area, put the next box in and take the dirt from where they are excavating and move it back. There won't be stockpiling and trucks hauling away and bringing back gravel. There is a lot less disruption, a lot less excavation. It is hoped that the disruption of the trail will be a lot less than is implied in the drawings, and there will actually be a very simple drilling and dropping in of the flushing structure at the trail site. Both the extent and the length of time of disruption of the trail will be less than what was originally envisioned. The bypass channel will be restored as a habitat associated with a wetland area. A wetland biologist is developing the plans for that area. A permanent fence and gate will be installed on the existing access to the Seattle right-of-way. The road that exists there now will be paved to protect their pipeline from the equipment that will be going up and down. City of Renton/Water Utility - Cedar River Utility Crossing File No.: LUA-96-027,CU May 9, 1996 Page 5 10. The utilities that are part of the proposal include a City of Renton water line, King County/Metro sewer line and an open line to accommodate future lines that might need a crossing, including but not limited to telephone, cable TV or similar lines. 11. At one time the proposal also included a large 72 inch Seattle water line but that has been removed from the proposal. When this Seattle line was included,the project would have required a deeper trench or cut into the river bottom and alternative construction techniques to accommodate the large line and a stacked arrangement of the smaller 16 inch and 12 inch lines. 12. The current proposal arranges the lines side by side in one layer permitting a more shallow trench. 13. The SEPA settlement agreement required that the trench cap, a concrete slab, be located with its top two (2)feet below the thalweg of the river. Atop that would be natural cobbles, gravel and sand mimicking the natural river bed in this vicinity. That is,the concrete would be located two feet below the lowest point in the channel. 14. The actual river work will require the diversion of the flow from the main channel to a channel that was carved by the river in the recent December 1995 flood events. The applicant will be employing water inflatable dams to direct and divert flows. The bypass channel will be enlarged to accommodate a flow approximately twice the normal flow for the construction period. The normal historic flow during the applicable time of year is between 125 and 175 cubic feet per second(cfs). The bypass will accommodate approximately 250 cfs. 15. The riverbed trench will be lined by installing linked concrete "U" shaped culvert-type construction. After that is laid,the conduit will be placed in it and then it will be topped by a concrete cap or top. 16. The "in river" work is expected to take approximately 5 days. The appropriate permits and approvals will be acquired before any work is done in the river. 17. The flushing station will displace the trail during its construction. A temporary path will be located along the highway and will be protected from traffic by Jersey barriers. This phase is expected to take about 45 days. CONCLUSIONS: 1. The applicant for a Conditional Use Permit must demonstrate that the use is in the public interest,will not impair the health, safety or welfare of the general public and is in compliance with the criteria found in Section 4-31-36 (C)which provides in part that: a. The proposal generally conforms with the Comprehensive Plan; b. There is a general community need for the proposed use at the proposed location; c. There will be no undue impacts on adjacent property; d. The proposed use is compatible in scale with the adjacent residential uses, if any; e. Parking, unless otherwise permitted,will not occur in the required yards; f. Traffic and pedestrian circulation will be safe and adequate for the proposed project; City of Renton/Water Utility Cedar River Utility Crossing File No.: LUA-96-027,CU • May 9, 1996 Page 6 g. Noise, light and glare will not cause an adverse affect on neighboring property; h. Landscaping shall be sufficient to buffer the use from rights-of-way and neighboring property where appropriate; and i. Adequate public services are available to serve the proposal. The requested conditional use appears justified and should be approved. 2. Clearly,the Comprehensive Plan accommodates the needed utilities to support an urban community. In addition, it encourages cooperation in locating utility corridors to minimize both the land mass used by such structures and the disruptions that establishing and installing utility lines creates. The consolidation into one main crossing of these three utility lines certainly meets those goals and objectives. 3. Again, an urban community has certain requirements for utilities. In addition,the location of Renton at the south end of Lake Washington necessitates the focus of utilities in this area. The Cedar River must be crossed in some manner for a number of utilities and this location is probably as reasonable as any. In addition,the location of already installed infrastructure in this vicinity strongly encourages the location of a crossing in this area. 4. With the settlement agreement and the change of hours also agreed on,the impact on the adjacent properties should be minimized. Clearly,the nature of the work will certainly affect adjacent properties during the initial construction phases but the impacts after installation should be quite limited. 5. The fact that all completed work will be below ground or river level should also minimize any impacts on adjacent property and will certainly mean the uses are compatible with the scale of surrounding development. 6. Except during construction and except for the occasional maintenance vehicle there should be no parking problems and circulation should be safe and adequate. During construction there may need to be some temporary closures or lane detours near the construction site. In addition,work on the trail corridor will require its temporary relocation. Adequate safeguards appear to be part of the construction plans and will be reviewed with all of the appropriate authorities. 7. Again, except during the construction phases,there should not be any noise, light or troublesome glare. The permanent facility will be below grade with no residual impacts on the community. 8. Any landscaping or vegetation disturbed will be replaced by native or equivalent species. The disturbance of wetland areas will be minimized and all areas will be restored or enhanced. 9. In conclusion,the project is clearly a sensitive one located in both the river and wetland environment. It appears that the various agencies have pursued a plan to minimize the disruptions both in time and place. DECISION The Conditional Use Permit to allow the installation of the combined utility corridor is approved subject to the following condition: City of Renton/Water Utility Cedar River Utility Crossing File No.: LUA-96-027,CU May 9, 1996 Page 7 1. The applicant shall comply with the conditions imposed by the ERC as modified by the settlement reached by the parties to the SEPA appeal. ORDERED THIS 9th day of May, 1996. FRED J. KAf�JFMAN HEARING XAMINER TRANSMITTED THIS 9th day of May, 1996 to the parties of record: Mark Pywell Lee and Marilyn Whitley O.J. Waffle 200 Mill Avenue S 1400 N State Parkway 1000 Shelton Avenue SE Renton, WA 98055 Chicago,IL 60610 Renton, WA 98058 Stan Hummel Abdoul Gafour Gene Peterson ' King County WPC 200 Mill Avenue S RH2 Engineering 821 2nd Avenue, MS-130 Renton, WA 98055 8383 158th Avenue NE Seattle, WA 98104 Redmond, WA 98052 TRANSMITTED THIS 9th day of May, 1996 to the following: Mayor Jesse Tanner Gregg Zimmerman, Plan/Bldg/PW Administrator • Members,Renton Planning Commission Jim Hanson,Development Services Director Art Larson,Fire Marshal , Mike Kattermann, Technical Services Director Lawrence J. Warren, City Attorney James Chandler, Building Official Transportation Systems Division Jay Covington, Mayor's Executive Assistant Utilities System Division Councilperson Kathy Keolker-Wheeler Valley Daily News Pursuant to Title IV, Chapter 8, Section 15 of the City's Code, request for reconsideration must be filed in writing on or before 5:00 p.m., May 23, 1996. Any aggrieved person feeling that the decision of the Examiner is ambiguous or 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 ambiguities or errors discovered by such appellant, and the Examiner may, after review of the record,take further action as he deems proper. Appeal of the Examiner's decision is governed by Title IV, Chapter 8, Section 11, which requires that such appeal be filed with the Superior Court of Washington for King County within twenty (20) days from the date of the decision. City of Renton/Water Utility Cedar River Utility Crossing File No.: LUA-96-027,CU May 9, 1996 Page 8 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. Any violation of this doctrine would result in the invalidation of the request by the Court. The Doctrine applies not only to the initial public hearing but to all Requests for Reconsideration as well as Appeals to the City Council. • • • iii 41 r----'-s t s--- --.._..._.._.. ...:•---.„...,.._.._ .—::- - - ---_ .--s -s----_,.._.,......_._.-s,,,..........._ i .."` .,_ ‘, , 8 e d \ �') ��` I Ii% \ ! p,, I10 c 1 s 0 ,:ii 0,0 ' -"-- - -- —--.'---—.-.------i-------- ------:-.—---....- ---."'.----------".- --.-----. ....--- ---- 77--------- --.-------- I1\ . \\,111.;11' ' ' \\ g\\ I Ir._ 1 ir----___s___..._.s____--•-.._,________.„.__..._,_,_. __„.._..,___s__.._.._s,_____..,_.__.,__._ \ I- \i„,,f• Imo-_\ __ 10 Ali i ' 4) \\iih\l'i.:: 111117F- -----------\\__ _____________ ______________._._ _,___,_______.___, --------- --------- -- ---, 1-441.3 ' ?'° .-\ \; -------- -- "--1 I= - 4:-0 --1 k.,,,, ,.1:,',--- -_,-- _____- • ----.-- . ,_____ ._,.___- _. . , , , _...._ t.:__ ___„...,,, i , : 1,,,,%.1 ,,,,7„..._ , N •,:„.. - -----,„ .,---\\ .\ , ,..,..., 1,_,; , __,...,._. , / ., ) 1„,__________ __ :I .: ,\ , ,)) , B --z.,-,.•-_,_• ,, ( A a v • &g 'N ' • ri ) )//, ,,/ .1 II•I II U 1 --- ----- ` k g \ EXISTING SITE GRADING PLAN CONSTRUCTIONO SUE GRADING ...:v-o' PLAN a�mma N YIARN7n ff RI D 8�71L479 w..csiorrorit L ■Wit a!CT rWC o , r J 7996 REKroN/KCWPCc! 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I "�� ., r -i uF HtNTON CAST IN PLACE CONCRETE BACKFILL FOR BUOYANCY CONTROL AND FISH WEIR FOUNDATION 14 @ 12"O.C.E.W.,TWO MATS, APPROX 40' ELEVATION VARIES: 6"BETWEEN MATS,PROVIDE 3' BACKFILL TO EXISTING BAR COVER AT TOP AND SIDES NOTE: EXCAVATION MAY NOT EXTEND CHANNEL BOTTOM 11'-.i INTO SEATTLE WATER DEPARTMENT CONFIGURATION RIGHT OF WAY UMITS. 2-2°—•f--2-8 I 2-8"----^{-4—2-2r— STEEL CASING,TYPICAL OF 4 • " -•/:\/.....-; '..; r,' , :'-::',!:,...:,.••':::;::.,:::;...'•-•"•:.:.,::• •. • ,.,,: ••••'•::•,:.:.•,:',..,..•;-,,,,i°:,:,.:,i..,:::::, , // Vi/ - , .:,.:: ,f;:://,' 3 f r a, ;,.:,.��;:JIhzcairi'iivv' ,. .., .,< _y/r;+i3_J.;:.irGi//•/71777, ��� k�1�.,,.\'%�\,. BACKFILL WITH EX `).: 'T'/; :/;,„t :„,,;/,?;'i,...„< .`.' :,'' /:/,,,, :/^, „:'i %i� S. ' NATIVE RIVER GRP • .'''\'' , :.. :;, ;`\ ,. `�,;�`•C':.`° )•..`,'•.`.'.\\`;>\.,; \:, NO IMPORTED BAC ., i?: .r r. ',:'r?�,:`::/:�':.':�:.',�.. ,,, :./,•/::`/r ` � WILL BE ALLOWED. PRECAST CONCRETE TRENCH BOX RIVER BED CONTRACTOR MAY USE SHORING OR OPEN CUT WITH 3:1 MAXIMUM SLC • • FISH WEIR FOUNDATION BACKFILL WITH EXCAVATED RIVER GRAVEL NO IMPORTED BACKFILL WILL BE ALLOWED. - 16'-11t 1 y4 ID 12'O.C.ER.TOP AND BOTTOM. PROVIDE 3°BAR COVER,TYPICAL 4 47till '21--- 4----‘;,,;;;,:,/''n:-,-.0 r.o0:IA%//iYLrrAV Sri,'Y//!/0/L9N6!!G%:/N/1 0/!:71//!/G.Y/%;N7.77!!!N_'H/!/:"J//%G%0�/!4%h:'OI!!M/Id/1�.91O10/Ond/!!!rdswgN/1GX70/!dU/H/i!!//!//!/!!1 9b/!//kYGO//0/%r9;////IeOR%!!!/O"71187.7-:'l/%OG%///b7:lY/,%!�J!/!!!/„G/rLIYOHFY%ldldi7NIS1NE,9r/!///fi/4!/OdFM/, 1-0 '';',. <•:<;':' N/,, ,��/�,/`/�'Nfig y,�/��//rG°/�i i%Ur//!�Iy�,�� �� FT E"////�1/�a/����l i/���a���e/v/�����11////i�4./%� 7 a2/i �y/i ��,.✓/// 9 /1" :; :l/\.`!y2•,��,►;U/1.r6/N/7////,/////rY/r!,9!/!////dr7�//I///!!;I/H1///h///lrrT/!1///a%//N!/!/%pr9!//5Yl!//Ji/.�x//!//.9/.g////0/gwa9/�969I.r/d//I9YA.20//laAiN4l/I//OH//llN4.sr/////1a1H//HC%///!////i/////!/!////!/Hn/,HH,4/K//////N9/H//////,9!•7///!GN/d//!/0///I/d/H!N//////d/ter H,9ln////"/dWY�./ 4 \.`.`:'`..,:`."''!i ,41:4:%.1..._N.I._IT,.ai.1:..._I. _I1, '-1'V.CN..._s _IV:._N 1...@. Si YlPiN iVaS1?. _11 ii4,._i rt, i,..._IT r._..it rili%1 IT r._Si 'sN, i'r I,chii1 '1l r,"1Vai r•..7-:, :/ /%'/, 1;:, % i. I i,; // _ `/; ♦r \%,, 'r';e'<:" ;.ter,../..\. / ..-.,. :,;....-//>/??,/;: />./, A-'/.-/../).v /1>Jr.- />.•' ./://,-/.7., ",z/1.\/./..-// NATIVE SOIL WOR BYPASS FOUNDATION 1-1/2°NOMINAL WASHED ROCK STEEL CASING,TYPICAL OF 4 CONCRETE TRENCH BOX WEIR BYPASS FOUNDATION CONCRETE TRENCH BOX PROVIDE 4°WOE•L°SHAPED KNOCKOUTS WITH 9°LONG HORIZONTAL LEG FOR HOLD DOWN BAR.TYPICAL EACH SIDE AT 10'O.C. 1 CASING HOLD DOWN BAR, ASTM A53 3°NOMINAL STEEL CASING STANDARD WEIGHTPIPE, LENGTH TO FIT.TYPICAL AT 10'O.C. CASING HOLD DOWN "I )._ ELtil", \\' PRECAST CONCRETE TRENCH BOX O ,l,„,,,41, EpUAL i0 UTILITY VAULT TRENCH 0 I N0.1050-B,TYPICAL OF 11 I-- CD NOTE SEPARATE TRENCH BOX SECTIONS c7 ,,,,„ NEED NOT BE WELDED TOGETHER 1— w CASING HOLD DOWN,SEE w DETAIL THIS SHEET o o \ 3 r w w to NOMINAL 30'API 51 GRADE B WELDED STEEL CASING FOR SEWER ATED • 1 • . NCH NOMINAL 16'ASTM A53 GRADE B CAYATION WELDED STEEL UTIUTY CASING NOMINAL 30'API 5L GRADE B WELDED STEEL CASING FOR WATER ' NOMINAL 3D'API 5L GRADE B WELDED STEEL CASING FOR SEWER FISH WEIR FOUNDATION NOT TO SCALE,APPROX 1'=4'-0' CAST-IN-PLACE CONCRETE BACKFlLL PRECAST CONCRETE TRENCH BOX II ' �_ `\ CONCRETE WEIR 0 FOR FOUNDATION, SEE DWG N0.C10 FOR HORIZONTAL DIMENSIONS AND DETAIL THIS SHEET FOR REINFORCING STEEL O. STEEL CASING,TYPICAL WEIR BYPASS FOUNDATION NOT TO SCALE,APPROX 1'= 4'-0" 0 ar P{ � 4.ENGINEERS .. PLANNERS . SCIENTISTS REDMOND WENATCHEE OLYMPIA (206)869-1488 (509)663-0150 (360)705-0628 (800)720-8052 (800)721-8052 (800)722-8052 DRAWING IS NOT TO SCALE ,.•v, , , ❖ •••, IF BAR IS NOT 2'LONG 0 • I' 2" RENTON/KCWPCD ICEDAR RIVER UThIIi--st _ p BENCH S CTION 1 A I �1.1 3 JOB 141 n o'ILL 0011fIA 0INCI. DAIt x.VE 0.01 no NO 9III /' 11 c no I rII I No I nor I WO 01 1000 I cum0J I no I CIA 10 0v I I WWashington State Northwest Region I Department of Transportation 15700 Dayton Avenue North P.O. Box 330310 Sid Morrison Seattle,WA 98133-9710 Secretary of Transportation DEVELOPMENT PLANNING (206)44CetP9COF RENTON DATE: April 19, 1995 APR 2 41995 TO: Mark Pywell City of Renton, Project Manager RECEIVED 200 Mill Avenue South Renton, WA 98055 Subject: SR 169 MP 23 . 11 CS 1734 Mitigated Determination of Nonsignificance-Cedar river Utility Crossing kl—(144""t(A File No. LUA-96-027, CU, SM,ECF,W FROM: Robert A. Josephson, PE, Manager of Planning & Local Coordination Washington State Department of Transportation Northwest Region 15700 Dayton Ave . North, MS 113 PO Box 330310 Seattle, WA 98133-9710 Thank you for giving us the opportunity to review this project, which is located near the southwest corner of the Maplewood Golf Course . Our response is checked below. WSDOT constructed a fish ladder close to this location. We can not tell if it is impacted because it is not shown on the plans . If this project impacts our construction, The City of Renton will be responsible for replacement, of the fish ladder as well as other rock walls and landscaping done on the State ' s SR 169 - 196th to Maplewood Golf Course project . If you have any questions, please contact Don Hurter at 440- 4664 or Vickie Erickson at 440-4915 of my Developer Services section. VE :ve filename CITY F'RENT N CURRENT PLANNING DIVISt N OF SERVICE BY MAILIIN On the 2451 day of r h..Q, , 1996, I deposited in the mails of the United States, a sealed envelope containing t+e o.11 t KtIr 1?CfOO documents. This information was sent to: Name Representing Lee- av-,d vv�a.nl, h tL 1 (Signature of Sender) .No1�1.-k. STATE OF WASHINGTON ) ) SS COUNTY OF KING ) I certify that I know or have satisfactory evidence that `` ItRA- K- signed this instrument and acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in I ; the instrument. Dated: a-3/Cj C� GIcY z'w• Notary blic in a or the State of Wa ►iracaion s..—F Notary(Print) /e— My appointment expires: !' • Project Name: rRtUer 1 C100 SS(Ks Project Number: q(p —02- CU SAn r W (� NOTARY.DOC ................................................................................................ • :::listed::arein:.:o.rder:::;o<:a licat<on:number ont.;:entl<::ot::necessaril::::the:: xam�ner.:::><:>:>::>::::>::: 8:30 AM PROJECT NAME: VEHICLE IMPOUND HEARING CASE NO. 96-3063 PROJECT NAME: VEHICLE IMPOUND HEARING CASE NO. 96-3248 PROJECT NAME: CEDAR RIVER UTILITY CROSSING PROJECT NUMBER: LUA-96-027,CU,ECF,SM,W PROJECT DESCRIPTION: The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition, the applicant must obtain a Shoreline Substantial Development Permit (SM). Location: Near the Southwest corner of the Maplewood Golf Course. PROJECT NAME: ST. MATHEWS CHURCH ADDITION PROJECT NUMBER: LUA-96-013,CU,ECF PROJECT DESCRIPTION: The existing church was constructed in 1962. The applicant now seeks conditional use permit approval to add approximately 15,000 square feet of floor area to the existing 9,000 square foot building for a total of 24,180 square feet. The construction would be conducted in three phases over a ten year period. 1700 Edmonds Avenue NE. HEXAGNDA.DOC City of Renton PUBLIC Department of Planning/Building/Public Works HEARING PRELIMINARY REPORT TO THE HEARING EXAMINER A. SUMMARY AND PURPOSE OF REQUEST: Public Hearing Date April 30, 1996 Project Name Cedar River Utility Crossing Applicant City of Renton/Water Utility File Number LUA-96-027,CU Project Manager Mark R. Pywell,AICP Project Description This project consists of the installation of four underground utility components, including a crossing under the Cedar River across the Maplewood Golf Course; City of Renton water transmission main; King County Water Pollution Control Division Cascade siphon sewer replacement; one empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. The applicant also will be conducting some work in or adjacent to an existing wetland area. The wetland will be restored as part of the project. Project Location The project is located in Section 21, Township 23 North, Range 5 East, W.M., King County, Washington. The utility crossing of the Cedar River will be near river mile 3.1, within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. B. GENERAL INFORMATION: 1. Owner of Record City of Renton 2. Zoning Designation Resource Conservation/Residential - 8 du/acre 3. Comprehensive Plan Residential Rural/Residential Single Family Land Use Designation 4. Existing Site Use Vacant 5. Neighborhood Characteristics North Golf Course East Single Family residential South Vacant West Vacant/Single Family Residential/City Park City of Renton P/B/PW Department Preliminary Report to the Hearing Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April 30, 1996 Page 2 of 9 6. Access Maple Valley Highway& Royal Hills Dr. SE 7. Site Area 80,000 sf 8. Project Data: area comments Existing Building Area N/A New Building Area N/A Total Building Area N/A C. HISTORICAL/BACKGROUND: Action Land Use File No. Ordinance No. Date Annexation 3945 10/7/85 Annexation 2170 8/2/65 Comprehensive Plan 4498 2/20/95 Zoning 4404 6/7/93 D. PUBLIC SERVICES: 1. Utilities Water Renton Water Transmission Main - 16" Diameter. Sewer one 12" and One 16" METRO sewer main. Surface Water/Storm Water N/A 2. Fire Protection City of Renton Fire Department 3. Transit N/A 4. Schools N/A 5. Recreation N/A 6. Other N/A E. APPLICABLE SECTIONS OF THE RENTON MUNICIPAL CODE: 1. Section 4-31-5, Residential- 8 du/acre Zone 2. Section 4-31-4.1, Resource Conservation Zone 3. Section 4-31-36, Conditional Use Permit 4. Section 4-32, Wetlands Management PRELMRPT.DOC City of Renton P/B/PW Department -- ' Preliminary Report to the Hearing Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April 30, 1996 Page 3 of 9 F. APPLICABLE SECTIONS OF THE COMPREHENSIVE PLAN: 1. Land Use Element, Rural Residential, Pagel-9 2. Land Use Element, Residential Single Family, Page I-10 3. Utilities Element 4. Environmental Element G. DEPARTMENT ANALYSIS: 1. PROJECT DESCRIPTION/BACKGROUND The proposal includes four main underground components. These are: 1. City of Renton 16"water transmission main; 2. King County Water Pollution Control Division sewer siphon replacement; 3. One empty 16 inch casing to provide future utility crossings; and 4. Fish Weir foundation installation. • The Renton water transmission main is 16 inches in diameter and about 2100 feet long. The pipeline corridor extends from an existing City of Renton water transmission main located on the south side of SR 169 (Maple Valley Highway) near the western end of the Maplewood Golf Course. The water main will be constructed in a southerly direction under the Cedar River trail and beneath the Cedar River. The pipe line will then go up the steep hillside on the south side of the river and connect into an existing City of Renton water main located in the right-of-way from Royal Hills Drive. The entire project will be constructed using open-trench construction methods. The King County Water Pollution Control Division (WPCD) project element includes replacement of the existing 12 inch Cascade Siphon. The siphon replacement project will occur in the same river crossing as the Renton 16 inch main. The WPCD project involves the construction of a new flow bifurcation structure on the south side of the river. This new underground structure will be located approximately 750 feet south of the Cedar River adjacent to the existing WPCD sewer line. From this point two parallel ductile iron sewer mains will be constructed in the trench across the river to connect the existing WPCD 42 inch line interceptor in the Maple Valley Highway. One of the new sewer lines will be 12 inches and the other will be 16 inches in diameter. These sewer lines will be placed in 30 inch welded steel casings installed underneath the Cedar River and connected to a new manhole on the north side of the river. The manhole on the north side of the river will be large and will act as the access point to all of casings installed as part of this project. A single sewer line will emerge from the large access manhole on the north side of the river and connect to the existing WPCD 48 inch sewer inceptor located in the Maple Valley Highway. An empty 16 inch welded steel casing is included in the project. The casing will be available for future utility lines (e.g., telephone, cable, etc.)that may need to cross the Cedar River. All of the 30 inch casings described within this project will be located in the same trench under the Cedar River. At the river crossing, the Cedar River will be diverted into a temporary channel for about one week while sheet piles are driven into the river bottom and a trench is dug between the sheets. Temporary water-filled bladders will act as a boom to divert water into the temporary channel and downstream contamination in the event of a spill. Because of this configuration, no work will be conducted in the flowing water. The river crossing trench will be about eleven feet PRELMRPT.DOC City of Renton PB/PW Department Preliminary Report to the Hearing Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April 30, 1996 Page 4 of 9 deep and up to about 30 feet wide. A concrete cap will be poured to keep all of the utility lines in place. The top of the concrete cap will act as a base for a fish weir that will be used by State Fisheries personnel and the Muckleshoot Indian Tribe to aid in the sockeye fish restoration programs. When the project was first submitted it included an empty casing for a future City of Seattle water line. The City of Seattle has decided to drop out of this project and the empty casing for their water line has been deleted from the project. 2. ENVIRONMENTAL REVIEW Pursuant to the City of Renton's Environmental Ordinance and SEPA (RCW 43.21C, 1971 as amended), on April 2, 1996 the Environmental Review Committee issued a Determination of Non-Significance- Mitigated for the Proposal. 3 COMPLIANCE WITH ERC MITIGATION MEASURES 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. The applicant will need to comply with this mitigation measure during the construction of the project. 2. A construction plan indicating haul routes and hours, construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted to the hours between 8:30 a.m. and 3:30 p.m. unless otherwise approved in advance by the Development Services Division. The applicant will need to submit the plan prior to the issuance of construction permits. 3. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m., Monday through Friday. Saturday work hours may be arranged with the Development Services Division but no work hours in excess of the weekday work hours will be permitted, and no Sunday construction. Any request for longer weekday hours or weekend hours must be submitted in writing in advance to the Development Services Division. The applicant will need to comply with this mitigation measure. 4. The applicant shall submit a Final Wetland Mitigation Plan to the satisfaction of the Development Services Department prior to the issuance of construction permits for this project. The applicant will need to submit the plan and have it approved prior to the issuance of construction permits. 5. The applicant shall provide an alternative access corridor and work plan that includes, but is not limited to, the following: 1) a landscape element discussing the impact to the existing plant materials between the bike trail and SR-169 and a replanting scheme; 2) an element describing the signing and alternate route plan for bicyclist and pedestrians; and 3) the replacement plan for the portions of the trail surface disturbed by the proposed work. The plan shall be submitted to the satisfaction of the Development Services Division and the Parks Department prior to the issuance of construction permits for the project. The applicant will need to submit this plan and have it approved prior to the issuance of construction permits. PRELMRPT.DOC City of Renton P/B/PW Department Preliminary Report to the Hearing Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April 30, 1996 Page 5 of 9 4. STAFF REVIEW COMMENTS Representatives from various city departments have reviewed the application materials to identify and address site plan issues from the proposed development. These comments are contained in the official file, and the essence of the comments has been incorporated into this report and into the Departmental Recommendation at the end of the report. 5. CONSISTENCY WITH CONDITIONAL USE CRITERIA Section 4-31-36 lists 11 criteria that the Hearing Examiner is asked to consider, along with all other relevant information, in making a decision on a Conditional Use application. These include the following: A. CONSISTENCY WITH THE COMP. PLAN, ZONING CODE& OTHER ORDINANCES: The proposed use shall be compatible with the general purpose, goals, objectives and standard of the Comprehensive Plan, the Zoning Ordinance and any other plan, program, map or ordinance of the City of Renton. (1) COMPREHENSIVE PLAN The subject property is designated as Residential Rural and Residential Single Family on the Land Use Element Map of the Comprehensive Plan. Although there are no Land Use Element policies regarding the construction of utility lines, the Utility Element of the Comprehensive Plan does contain policies that support the proposed project. Policy U-2: Promote the collocation of new public and private utility distribution lines with planned or pre-existing systems in joint trenches and/or right-of-ways where environmentally, technically, economically and legally feasible. The various utility agencies are co-operating in the construction of the Cedar River crossing. The utility lines will all be located in the same trench. The method of construction will allow for the maintenance and replacement of the lines with minimal disturbance to the river or its environment. Policy U-8: Continue to coordinate the construction and replacement of City-managed utilities with other public and private infrastructure in order to minimize construction related construction related disruptions and contain costs. The proposed utility lines need to cross a trail established by the City of Renton Parks Department and the Cedar River. By coordinating with King County and allowing for the empty casing for a future utility line the City has developed a plan that is consistent with Policy U-8. The proposed project is consistent with the policies and intent of the Comprehensive Plan in regards to the location and construction of utility lines. (2) ZONING CODE The project site is designated as Resource Conservation and Residential 8 du/acre on the city of Renton, Zoning Map. Large utilities are a Hearing Examiner Conditional Use in both the Resource Conservation Zone and the Residential-8 du/acre. PRELMRPT.DOC City of Renton P/B/PW Department - Preliminary Report to the Hearing Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April 30, 1996 Page 6 of 9 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 over concentration of a particular use within the City or within the immediate area of the proposed use. The intent of this project is to concentrate all of the proposed utility lines into a single trench and thus reduce the number of times that the flow of the river is disrupted. In this case the reduction of the environmental impacts of multiple crossings to a single crossing are the influencing factors in determining the location of the pipes that are required to cross the Cedar River. City staff do not feel that this is an overconcentration of the land use. All of the utilities involved in this project limit to the extent possible the need to cross over the river. (2) That the proposed location is suited for the proposed use. The proposed location is suited for this use in that it will allow for a logical connection between two of Renton's water systems for redundancy and will also allow King County to replace a failing sewer line. The recent flooding of the Cedar River caused a channel to be cut into the adjacent river bank. This naturally occurring channel will be used as the diversion channel for this project. 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 shall conform to the requirements of zone in which the proposed use is to be located. All of the proposed utility lines will be underground. Therefore, no new area will be covered by structures that are included in a lot coverage calculation. (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. No yards will be created as part of the proposed project. 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 structure may exceed the height requirement upon approval of a variance. Building heights should be related to surrounding used in order to allow optimal sunlight and ventilation, and minimal obstruction of views from adjacent structures. All of the proposed development will be underground. PRELMRPT.DOC City of Renton P/B/PW Department Preliminary Report to the Hearing Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April 30, 1996 Page 7 of 9 D. COMPATIBILITY: The proposed use shall be compatible with the residential scale and character of the neighborhood. (Ord 3599, 1-11-82) The project as proposed is compatible with the adjacent residential neighborhood in that, after construction, all of the project will be underground and the surface will be returned to a natural or pre-project state. The State Dept. of Fisheries and Wildlife and the Muckleshoot Indian Tribe would like to use this site as fish project. Their project could include a temporary trailer and the need to access the site with trucks. This will be a separate proposal that would need to undergo its own SEPA review and possibly site plan review. This work is not a part of the City's project nor has it been reviewed as part of the project. If the State and the Muckleshoot Indian Tribe plan to proceed with their project they would need to complete a separate environmental review and apply for all necessary, if any, City permits. 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) No parking areas are proposed as part of this project. F. TRAFFIC: Traffic and circulation patterns of 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. After the construction of this project there will be no traffic to the project site except for the occasional maintenance vehicle. These vehicles will access the site from the existing dirt road. Construction vehicles will need to access both sides of the river. Temporary access roads will need to be constructed but these will be removed and vegetation will be re-established. 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 and glare will be generated during the construction phase of the project. No noise or glare will be generated from the site after construction is completed. Construction noise and glare will be moderated to the extent possible by the careful location of potential light sources and the City Noise Ordinance. Any evening or night time construction will need to comply with the noise requirements adopted by the City. If, during the crossing of the river, it is necessary to continue construction into the night, the applicant will need to obtain special permission from the City Council. The City Council would be able to establish further requirements at that time. PRELMRPT.DOC • City of Renton P/B/PW Department Preliminary Report to the Heating Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April 30, 1996 Page 8 of 9 H. LANDSCAPING: Landscaping shall be provided in all areas not occupied by building or paving. The Hearing Examiner may require additional landscaping to buffer adjacent properties from potentially adverse effects of the proposed use. The applicant will need to re-establish the landscaping and natural vegetation after the completion of the construction phase of the project. It should be noted that a portion of the City's utility line will be located adjacent to or within an existing wetland that has been identified by the applicant. Utility lines may be located within wetland areas as long as the wetland vegetation is re-established as part of the project. The applicant has included the wetland vegetation replacement as part of the project. I. ACCESSORY USES: Accessory uses to conditional uses such as day schools, auditoriums used for social and sport activities, health centers, convents, preschool 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. N/A 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. N/A 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 conditional,upon the provision and/or guarantee by the applicant of necessary public improvements, facilities, utilities, and/or services. The project site is adequately served by existing utility lines to allow for the proposed construction. H. SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT The project as proposed will be located within the shoreline area adjacent to the Cedar River and under the Cedar River. City staff will be submitting the Shoreline Substantial Development Permit to the State Department of Ecology after the Hearing Examiner has approved the Conditional Use Permit required by the zoning. PRELMRPT.DOC City of Renton P/B/PW Department Preliminary Report to the Hearing Examiner CEDAR RIVER UTILITY CROSSING LUA-96-027, CU PUBLIC HEARING DATE: April30, 1996 Page 9 of 9 G. RECOMMENDATIONS: Staff recommend approval of the Cedar River Utility Crossing,file no.LUA-96-027, subject to the following conditions: 1. Compliance with ERC Mitigation Measures: The applicant is required to comply with the Mitigation Measures which were required by the Environmental Review Committee's April 2, 1996, Threshold Determination. EXPIRATION PERIODS: Conditional Use Permit: Two (2)years from the final approval date. (Extensions may be requested. Requests for extension should be submitted 30 days prior to the expiration of the permit.) PRELMRPT.DOC I . CITY OF RENTON DETEMglINATION OF NON-SIGNIFI(. CE (MITIGATED) APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION OF PROPOSAL: This project consists of the installation of five underground utility components, including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main; King County Water Pollution Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North, Range 5 East, W.M., King County, Washington. The utility crossing of the Cedar River will be near river mile 3.1,within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along.the south slope and up to the top ending at Royal Hills Drive SE. LEAD AGENCY: City of Renton Department of Planning/Building/Public Works Development Planning Section 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). Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4-6-6 Renton Municipal Code. These conditions are necessary to mitigate environmental Impacts identified during the environmental review process. The 15 day comment period and the 14 day appeal period for this project will run concurrently. The comment/appeal periods for this project will end at 5:00 p.m. on April 23, 1996. Appeal procedures and the mitigation measures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 235-2550. You should be prepared to make specific factual objections. PUBLICATION DATE: April 8, 1996 DATE OF DECISION: April 2, 1996 SIGNATURES: Greggxl�mm an,Administrator DATEEVZ/ Department of Planning/Building/Public Works m Chastain,'Administrator DATE Community Service Department Lee er, Fire Chief ATE Ren n ire Department DNSMSIG.DOC • CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) MITIGATION MEASURES APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION OF PROPOSAL: This project consists of the installation of five underground utility components, including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main;King County Water Pollution.Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings;and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North,Range 5.. East,W.M.,King County,Washington. The utility crossing of the Cedar River will be near river mile 3.1,within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. MITIGATION MEASURES: 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. 2. A construction plan indicating haul routes and hours,construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted to the hours between 8:30 a.m. and 3:30 p.m. unless otherwise approved in advance by the Development Services Division. 3. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m.,Monday through Friday. Saturday work hours may be arranged with the Development Services Division but no work hours in excess of the weekday work hours will be permitted,and no Sunday construction. Any request for longer weekday hours or weekend hours must be submitted in writing in advance to the Development Services Division. 4. The applicant shall submit a Final Wetland Mitigation Plan to the satisfaction of the Development Services Department prior to the issuance of construction permits for this project. 5. The applicant shall provide an alternative access corridor and work plan that includes,but is not limited to,the following: 1)a landscape element discussing the impact to the existing plant materials between the bike trail and SR-169 and a replanting scheme; 2)an element describing the signing and alternate route plan for bicyclist and pedestrians; and 3)the replacement plan for the portions of the trail surface disturbed by the proposed work. The plan shall be submitted to the satisfaction of the Development Services Division and the Parks Department prior to the issuance of construction permits for the project. MITMEAS.DOC/ CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ADVISORY NOTES APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION OF PROPOSAL: This project consists of the installation of five underground utility components,including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main;King County Water Pollution Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings;and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North,Range 5 East,W.M.,King County,Washington. The utility crossing of the Cedar River will be near river mile 3.1, within the City of Renton,south of Maple Valley Highway and across the Maplewood Calf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. Advisory Notes to Applicant: The following notes are supplemental information provided in conjunction with the environmental determination. Because these notes are provided as information only, they are not subject to the appeal process for environmental determinations. Fire Prevention Bureau 1. The applicant shall maintain emergency access to the construction site at all times. Surface Water 1. Temporary erosion control measures shall be placed around all areas disturbed by any construction activities. This includes all staging and equipment traffic areas. Plan Review-General Comments • 1. All plans shall conform to the Renton Drafting Standards. • 2. A construction permit is required. When plans are complete three copies of the drawings,.two copies of the drainage report,a construction estimate and an application, accompanied by appropriate fees must be submitted to the fourth floor counter. It is recommended to call 235-2631,prior to issuing a check to verify the correct fees are generated by the permit system. Parks Department 1. The trail has only been recently completed and available for public use. The highest times for use are during the late spring(May)through fall(October). This is considered a transportation corridor accessing Lake Washington to the west and Maple Valley to the east. Recommend boring under trail to install utility connections (with sleeve encasing the utility line) rather than cutting across the trail and trenching. Cedar River Utility Crossing - LUA-96-027,CU,ECF,SM,W Advisory Notes(Continued) Page-2- 2. There is no discussion in the project description on how plant materials will be affected between the trail and SR 169,how construction will occur in the trail corridor,nor a discussion of a staging area. The Hill side has steep slopes and unstable soils. The vegetation in this area is mature. There is reference to a Wetland Restoration Plan but no listed plant materials nor planting plan. Existing vegetation between the trail and SR 169 will need to be restored/replanted to existing condition prior to construction. Existing chain link fence will need to be replaced at the existing location once construction is completed. It is recommended that any staging area on the trail side of the river be located outside of the trail rather than in the path. 3. No take out area for canoes and other light watercraft has been identified. Typically floaters go ashore at Cedar River Park. 4. More information is needed on the groundwater feed pond and channel and the impacts this will have to the access to the hillside. 5. More information is also needed on how and who will have access to the fish weir for trapping and gathering of eggs. 6. The applicant should establish construction times to minimize impacts on the trail users. If trail is replaced and or needs repairing it should be done to standards provided by the Parks Department. 7. A locking gate system needs to be provided at the south end of the project area to prevent vehicles from accessing the river from above(This has been a problem in the past.). 8. Trail profile of area proposed to be impacted is recommended. Trail is currently at a 1%to 2%slope and needs to remain within this range. 9. A Use Agreement between the Parks Department and Water Department for the water main needs to be prepared and executed. Utility easements for agencies other than the City need to be negotiated and formalized. 10. The trail needs to be open during the construction since this is a regional trail connection. ADVNOTES.DOG • } City of' _ 1 on Department of Planning/Budding/Pub orks ENVIRONMENTAL & LtVELOPMENT APPLICA ) :ON REVIEW SHEET REVIEWING DEPARTMENT: Fad& COMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. BUILDING AREA(gross): NIA SUMMARY OF PROPOSAL THE APPLICANT(CITY OF RENTON/WATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code)COMMENTS Element of the Probable •Probable More Element of the Probable Probable More Environment Minor Major information Environment Minor Major Information impacts Impacts Necessary Impacts Impacts Necessary Earth Housing qM / Aesthetics Water a/ I.' r Light/GlRecreation Plants ✓ rr Recreation i/ LarShoreline Use ✓ f Utilities 1 Animals Transportation 1 Environmental Health Public Services Historic/Cultural Nar Resources Preservation 7-11,c ,elci i/ le)C45 c/n/ ,4eer) /ac e_ti 0 hp1e s� �adiaJoc. / mil,c_ Use,s1/xC� OC1*r/99's. h f � c�` the_ / , %� Q // r4� � rC e rye of u d 1��,/�:;G r r�/c3' c ASS r r� C d. fo l Wi e� s ay7c/ ci e". �i e / AVI-- ,2-i'77/ 4' /7ju� �/ f17c7 a/// a 0/gyp G/�ct:.L55/5 V !7 G�G an-co') �izyi/a:1 Y/GY'S' / , /�5:' �� ,6CC> /OY) a 7'7 �//'u'ClJn%+ vL77G /// Oc cOr /n 1� fr-ad CO/Y./del I'd/• ak5ca5S/rm d 3�� 2 p.I.J-i: 1 4'y.eha a?77 f• - /r)41N �, ei°e ,c5 q �Xe 7 r� v /dui lie f L/e 40 /i5 .�r�7` - Gv�{/cvr� 7 /o . % r,- cao e /2�-t!.s; , ,. ii-* j i4afr / ae /// ��O*/3 d acz how ci7`� �.- ��� ' ,..k.„,,,s'AP72..el c/u Hpir):2'6cecini9ciivire/ 41-Y4/6;a7a/s d allSd- /Y ne / yamA'flh' " 5 'ze /t / - a,,�/ , l ,//ham I � f/A r ,2 d C C. CODE-RELATED CO MEN//TS ntek7 /o'v citi-c i ii--)o /2.a r4 2 CzL /V i i 6-•e r/1 Aga______, • We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable Impact or areas where additional information is needed to properly assess this proposal. ii—WCZZA‹ ) is nature of Director or Authorized Representative te DEVAPP.DOC Rev.1O 3 -X_./9/1.2 C÷Px.44y,A. 1 hs - g.2-.7L .3/2/90- Uoy 7-2-e/cY/2.; 4A/p(i-j- qp(77 I -Pe/Z. C1---1301 ..( 0002 r b/0 -.7, &A,/c2 c/e(72.7( (idol° //a-9 c7<21 v CITY OF RENTON MEMORANDUM Date: March 20, 1996 To: Mark Pywell, Current Planning From: Kayren K. Kittrick, Plan Review j3 Subject: Cedar River Utility Crossing LUA-96-027, CU, ECF, SM,W CODE REQUIREMENTS SURFACE WATER 1. Temporary Erosion Control measures shall be placed around all areas disturbed by any construction activities. This includes all staging and equipment traffic areas. PLAN REVIEW- GENERAL 1. All plans shall conform to the Renton Drafting Standards. 2. A construction permit is required. When plans are complete three copies of the drawings, two copies of the drainage report, a construction estimate and an application, accompanied by appropriate fees must be submitted to the fourth floor counter. It is recommended to call 235-2631, prior to issuing a check, to verify the correct fees generated by the permit system. RECOMMENDED CONDITIONS 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. 2. A construction plan indicating haul route and hours, construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted between 8:30 a.m. to 3:30 p.m. unless approved in advance by the Development Services Division. 3. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m., Monday through Friday. Saturdays may be arranged but no hours in excess of the weekday hours, and no Sunday construction. Any request for longer or weekend construction hours must be submitted in writing in advance to the Development Services Division. CEDARCRS.DOC pc: Neil Watts • City of ton Department of Planning/Building/Put /ark` ENTON FIRE DEPT. ENVIRONMENTAL & D'EVELOPMENT APPLICA ) i0liFZ` IVI1''EVljjF`SANEET REVIEWING DEPARTMENT: F\ ye, PY2.VP cW.\ COMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7;'1996,s E� aF 0 APPLICANT: CITY OF RENTONIWATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. BUILDING AREA(gross): WA SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTONIWATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code)COMMENTS Element of the Probable Probable Moro Element of the Probable Probable More Environment Minor Major information Environment Minor Major Information Impacts Impacts Necessary impacts Impacts Necessary Earth Housing Air Aesthetics Water LIghVGlare Plants Recreation Land/Shoreline Use UUlftles Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation r, A)p /fric oN _flirt ncts /Vete 1 • B. POLICY-RELATED COMMENTS 'OA C. CODE-RELATED COMMENTS 41I4141n ,/nr!r°�eetcy etCceSs 47a`!// i gas We have reviewed this application with particular attention to those areas In which we have expertise and have Identified areas of probable Impact or areas where additional in ation Is needed to properly ass:. i this proposal. -' OW-120 & 4 ) 3/r/2 s t Signature of D or Authorized Representative / Date DEVAPP.DOC Ray.101D3 • • EDO Of WE;uux CROECT I I "ENS TO PPOECT.I1E 1 g0Y4 NiLLS OR.SE DEFT.ACTCR ACCESS SW_F M*.nM ADO wAl A fo DE ACCESS MRO:fdR GATE ACCESS 61R I EAi1LE wA ER VANTEN,N(SAD)R°R AU[SS TO 1XE EVSTxG VuxTEx ArvU P�+D- • F�LxFPlL NOTES 1 / WATER MAIN 10 EE CONSTRUCTED RCN ROSTOV CP NU.70 RCP. i ,I r'(r(!`I t( \ • \ \ .' ' I I�� ��. sunOtWVD uLl cOa;MxalEs PffTi7 TO C'tiu'lu"It➢¢Cr RnWC. 1 I. \ • \ -{PROPOSED A'AIFR YaMI N mil. f• DO W7 DEFLECT PPE DVS Y THAD 7'. rVaP05RD eTiRr nOx ORwSrA pl -- LLJJ a I \ 1�` `. \ &E pT, L CITY OF RENTON• ,�nA ROE I .I REsoRE ALL DISTUPSeD ArAs m Ensrxe w OUTER WOW, 1 /� I ` 1 II'1 Ira PROPOSED SEAM uaMS •�{ ��- uuxlAM KnIpRAR ACCESS.i ALL nuES t0 ME aTAitlE VAMP PIPEYxE NA ME \1`.,e *V`1 /y I,1 cP ACCESS ROADWAY #., .O ���\ Illl3y ��l I�A"t.j�\A�rt\\ / 1 ` Itj wYlmox DPW sc. 1 -122 CoxmAcroR my G.TO aerury v T+LE wARR DEvavtx5xr \1� \ 1.. •I P �! py.),r ,�+_Rtl�! ` 1- AIL° ,....... :A a SxOJLD IXEY V191 t0 USE SVD'S E551 RIGHT Of WAY Etli PROECr ACCT55. \� � J o 00 45 P1^° a ANY NO.INNER DO=RAGE N AVY WATER EOU PNQR TOORR SiICOrilE�EY,EEWED \� �Nks, 14"p 'r� �� �:� /-'� . 1�IQ��� 1141!_i_°231 s_ r99` _�._ 1 111 �ti.:' - 4+Rlu T43.f MR OP Da Of RANG ���� �\" ;I R �.///�`�. ' �d5 � � :� i i fly Ai I 11/ -� �,,���` L i I (s_....., ��� ,�o�,l��� `�� ��/ P io ��Nly SI `))____- ...;"=--w------,::*-•- • �� \ (If I /, END Cr V.RR MaTI FFAEGT I)/' �`� / ��� NE PARIA PuuIDnG 4. ' 11 �/ > ` •:qry�1"'n`idlk ` I, J��'" �'� I 1 D RRS,r�o a !yI • LEGEND•I�r- d /ppI;t` ,\\. f 1 I „.5TON Vaipl / / C' C..)'' �//\�' / (/n 1�`\\� \\ 1 100W \ �� N\ 1 I \RUN6F RiP19M5 Q� / eN@ ' \\*,p,, 11 ;i_ J\ • IEND O<5[LAR UAIN FRO.EGr IIJ / V\\� '�� 29)\\1 \ / / j E e �S root swARt EooucE u slE.ei.wD.a N. , N``n('\ 1\t ' I�,R Q' • ' PER�11Ta(,R CF LOi COTfAAGE•0 m Rn\\�Ill ll,�i`I�1�'�1\�4�\�� t• I I so.:a Fror.cE a ALL LANDSCAPING•a a.R.j0 1 :, SITE PLAN .IW' i I b 20•-2• / 8 —II ''-0' 2 .. / y//////I/ RKx°1659xG a , 0,•0510 0A1FR® 9/I c. J\7% rR OrY OR RENToN PARxS co,, • g 13NO1 wALL :.::,•..: •:'...:.y1:'....D..i &E RxANC4Lv.E�I' 3 11'-0• PENFCRCING PULE •.%:.••..• v . '• ,!, a ' wanR uaw(ACM PREr4E RIVER CROSSING TRENCH SECTION SITE PROPERTIES CEDAR ROOT. REINFORCED TRENCH WALL '•-'Dar r GEO 4W5 GROUND PRCFRF 1-`A ' % \ INCINERRE • ROOMED t6•wATFA 4Artl t=yg� r3 \_%�py qR9' ' 1n1Nh°166 ((1EAIA VA 50 .130iai�De15 YMPIA ........ S 1500�720•dA! E600 Wp .•• MAIM 61°7 To sou ..."�' . 1996 iB/H6NDi YlmD p"•'•• :xrrY • �PRWD•RO It ND Tr SEINER UAIIS;Z:'t e l 5 REidTON/KCINPCD/'i "9 014 PROFILE CEDAR RIVE-0 -:•'1 `:e xm To sCAIE w pti �tEV f ;cVEL,,,rv,_IN t PLf+f�� �+1E o FLAN AND PROFILE ~ CiT`(OFREtJTOtd lsio:oi00 o2 s:u1©'ru2,P3sI xv.E 1:7,1 l,o I s`ma • • • • I uPrRPOSD NAILER NCWNOT D.--- VHILL O<CD+S1a0Cn0N AREA z RESIRANE0 JONT PPE TM , P Sl LOPE TRENCH • STEEP SLOB LOCATION ';i:N,i ED4 CT TRENCH EXCAVATION pill •_ SECAL y9 TO < •, •`�� •• IDP.st•n t< Bi VNOSIUPBCD NARK YAiCPIAI(TYD.) 1—I _I I_ 6_p• • I . �i_1 —• _ I • ca+�iRDL 5Y5roiGIBE INSTALLED WM10r CPOSNx PLACE C0101ER ATIOSU BLOCK _I — I�1I AGAINST ENCAMPED NATIVE NATWLL `•, =I I I I l/SUAR11G5 0 e•O.L ERN WAY I I D-0• 0 +I i a0_p 0 Q•:PNG iI2 lY BE.R.BAN Laic.ri Tfc. �p'-p n 11flV1 S Y-0' 2-p APPROX. u� BENT RAT(Bl FOR PRE S EAC OAUEIFR..p21'UN I I J. ♦ I PROVIDE(•)N'0. OILS G01 90E FOR P.'DIA.A TY LONG ' REVATIE N WI B au V.EK STAINLESS STEEL ANWpR Bars • TRENCH DAM -1 6'OVEPIAR-31 ■ u . n ■ m i n ■ ■ ■ . NTT TO SCALE F i IIf IYI IYI12 MDT EWAL TO DISTURBED AREA EDGE Of TRENCH E(CAVAD(N ro TEDH SUREA CROW TIEnOA IRS CPta EROSION CONTROL MATTING B 11�" IIInl'—' RESTRAINED JONT PIPE x \1. � PROe10E 12'BCNN D ER OP O S FFlP SLOPE RExO it II NOT 10 0510 Jilll h I . •:,'.\\ SD•_C• • 1 I-11111€L;, p.lr•:'ti'11•< 1.. I- PA URN'PIPE 11.I l F�.. A 2'-0'f16RN iaPIEH T 011100CT r• O'hRT SUB 91RrAC£41EV 11`,.•= _ DPDSE ORAOI PIPE AT SURFACE I.CP090:C01701.Ue10NG TO BE(COAL TO OUTDO WRLEY 0100(1S. _ _ 3NP.+BEHIND TRENCH Ohl TO ,\\ ■■ - - II mE%MCC I a� 2 ua1T4IG ro BE STALLS VTR THE 05NI0D P11NRE AREA ON AU. IC `•0 \ \\\ I OP10:E1C ANCHOR TUCK AT 100-0•WACIIG 0 C. 05TJRBED SLSEs 1 Al I I II 5 lL' �� • 2 INSTALL FLAP STAPLES ACROSS ME START 01 EACH ROIL OLW4P g Iii II .11=1L..`N 1EIAPORAPY Ex090I CONTROL 1SEPG.Psuu WACCxT POLLS•VIN Cr 6-INCCES son¢sPoLos Al 6 TOOT T.yA O�� II II II AT,),,, 2'�p • AT 5o'-Y war.ALUNG ceNsINucnw AREA 11.1 Vets AD11G TYE SCES AND CENTER Or DON ROLL. I IL ll�ll=1" P• •nan AT LEAST ON.LENGTHS190011 OF FErv¢Ocvxwu A1RP.N.tE 1NE PAPNG LOCATION 0,ME 90E AND CORER STAPLES F F II�'NII =L_ II=11- qr I IS1CONSTRUCTION MCA PO10JC IFNONG AEU HATING A ueT11NO TO BE R15TALLS MR VEGETATION AND FR090N MOR0. - qM IS w5iAtlEp L'MILL Di Ma. BEAUS AS FOOL..D. PL111 NEN TIEN',CAN NATEP'AL T DRENENT ME FNATION V,.'A . PASSAGE Of SUB SURFACE WATER TING • 5 INSTALL NET1NNG ON COT AND rIBEPS IN CONTACT MM ME SOL THE OCAVATEo DUNN,SU SECS q NOTCH'1CNCN 1LOM AEp WALLS 'y 10 NSTALL 1RN1EN DAN N0TCNAL PIPE ANCHOR BLOCK EWSION OCNITIOA uA„INDINSTAELEOOr001 COARETED NAILER LAN NSTAWTION DOAfUpLL 6 CONSINUCTION AREA NOT 10 SCALE .O,O•. wsT•LL i.A'•5'-0'LPN'T.Fe. N TOOT A10E A 2'MILK URA CA At 6'-0'O+CE111ER BURIED 2'-E'DCCP, STRAW 01 ua[N unit`CP rp10N4 '1;p EPOS),CONTPO.FUICE FABRIC:;AJAL TO f�\', T •.• • • • GYM 61:_A'v.E:AI AN EDS 0 015m,.. // )5lu • • • • • • • • 1. • IVENN DAN AT 50'- KoG•'ANND 9PPoRT MIN••.2-•1A GA. Vss 0'PAONC DC WE EARL TIED 10 STKESUP%STAPLES ,/• `' /r/ ' - Pr V �=o jp=La C"m�A EROSION CONTROL PLAN \i`� i STANDARDS(M.) NOT t0 SCALE �// GCAVATE A 6"•6'"0001. �: LAY 10100',sac 51 1RWCN e'-Y WAR._ •`�/ AND BA06R1 NM PEA cTAIEL �Rl lY _pE V y��_y /` 1(lYPri — �,7 f 17 R/ C _ AIG¢iEaiB —1 i R p�P _ �nuxxe— FA�" •+.•+,,;�T 6'a8015 PIPE 0T TEMPORARY +s j -.•. P6°0 o°>H a^°u EROSION CONTROL FENCING g''" " 1996 rlD: 1 'li K30 56 1m.3611 > A��"+�•'+-- ' 6•e¢OW DIPS '. !?Lf DUMC R kff 13 sM. s r x0i i0 SCAB . , . .` b.+ r B,n a fm r L. RENTOPI/KCWPCD/ o PTRLMYAFNC TRAP MWND PPE(1M) i•i•:-•i •i • (TRR.A-1E�Ow PIK) IF IAATEBY R 1EFA(ttP.) ���/cLOUfvfl 4 t'LHNNINr CEDAR RN� TRENCH SECTION CITY OF RENTON CW9CTION DETP AILSP1• E ND"TO SCALE .A• RE WE MI AB YE TS5@0 w1JY=DD D•D 1 o I ra 2P.1PSE I 9.m I so I rr I Ash k. 7 -- ._\\ _j__ \.: It! )------ . v . \ i� �1 \tte_ ` rt s I1 � !` JI efrr .R� .4.:-!:i! ? \ r_.—_-, ' 9 91 iti \riff. :... v.,„ -- .:-.- ,„ : , 0 ,1 \ 0 le, • , i k.-- ' 1--_. \ ----------,___--------- 11 , .,:„ \ 7,--_=__-,.. _,_,_.--.-,,., 4, ,) . ,_,___.,___ I, ,, ,i is i t, 1 - ___-. .-i-!k 1 ' c--- . 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AND IyIE WIN EARL 6a'C CnrsnUCTO.I,u,s r CUvATO N v'AT ucsiarne n.o EaC51DN CONnia FO.CE EAa9C MAL TO / CElVAIIJN!]'Ai OONISIP N[ND EPU EVGN GTT-AccE.Wu AN EDS•0,5•�, 3pl iLICE 5[:.:4 AM Lc�T n'•. x i or �� / -� Ux115 Cr ON RSGII aAA.Cl AWN• .LUNG A D.i C 1 CC:v.a'or •�i•. ,'�,�T.E. �1L/-'{ vEnJANp AafA 2f.WSTA:c 2"ST 1.9T NA GAUGE / ��/• I-. E�, EM1,..9'N dAN•.rt NOV, TAKE AAS9,L USE Simko,.Gc wcE 9NL5 G � ij�•�!:!•;•;2. / ••l'/E I.DIlEP9'JE aaEag 1CLL OWLET Fp1JV EgSiWO To ATKA 10, TO FENCE b / \�/\%</\\ i:... ,  % ._. .v}� `}•'i{�! cocoas mum Gwiuwas scw[. r '/\\�j�j\/\�\�/\\//�\/� .}•r•}•+i�r��ri�r�+r•)•.., i+r�ri„t r•.r yriFr��r naaawA1 WTI uOrn+ciwu BC u4Nrwlm \�/� \j/%�\%\/\ \/ t.4:;r.;r.,o. .o.t..via. l ti•E t,t r t••t f t•t•E t•• PLUMPS l/41 ,> / ..via. �i:�[. To=Ma IS LINED TAN.GEoranE cADNIcNap atc¢+eEm %\\%\\�\\//�\/\j\/�\ �r�Yr. �i r�•l py� po wlit ,u6[Dla,mmBE927f1 RS\ \�y�\\\/�• _ou iaofwoE sra�c i'Puu cc E-wouc ^raj���{��+�1:��+�ilO�+0•I0,`w iGEOTun¢EAS Ic WPM MIAMI aruu ////////�// +liililf•.i'tiV:61♦ a 0t�7®o-lEmNmtamE�xx1o�VI\ ,\ r.h.h.fir.fir.• (ODo1l 19J0 rnm (o]o]m./\ TO 01*w5EE2aau1. 5.O TwCOON.Y ALL G m+ Er uuW¢DelaE 1om..0 a wr m seue :;:;::�E. ';y 9 : TTICT s • • EROSION CONTROL FENCE CHANNEL CROSS SECTION , �•`4 96 CEDARRIVERK• — ��cNJI ID SCa[ENOT m s.AlE �c��.`' TEMP. se •IMENTATION Cj 2v,crd 1 rNNING CO�DRAINAGE PLAN CITY O FR�'RiTON ".2J IG.U�DNDi®I` ALB2a.92SI . T IbI I eora LEE AND MARILYN WHITLEY DEVELOPMENT PLgN 1400 North State Parkway OMB'OF REN,^n,NING Unit 7-F Chicago, Illinois 60610 ikon PIM2 Zr 1996 Telephone(312)587-0488 RECEIVI'Cik% April 15, 1996 Mark R. Pywell,AICP Project Manager, Project No. LUA-96-027, CU,ECF,SM,W Cedar River Utility Crossing PlanningBuilding/Public Works Department, City of Renton 200 Mill Avenue South Renton, Washington 98055 Dear Mr. Pywell: We are the property owners(since 1967) at 969 Shelton Avenue S.E., the residence up stream, closest to the proposed project. We have been living out of town for some years, but will return to our Renton home early this summer on a permanent basis. We, along with a number,of our neighbors, have been observing the progress made toward the pipeline crossing the Cedar over the past several'years. We are impressed with the care and detail taken to write the environmentally sensitive proposals now before you and are pleased that the pipeline project is to be placed under the river. We are supportive of the project and see no reason to object to either of the proposed crossing modes. We do note that construction is proposed to take place on a 24 hour-a-day basis. Even though, it is projected that the project would take only one week, we are mindful that sound is magnified along the river and believe the noise and lights would be very difficult for us during that construction period. Therefore, we request that only two eight hour shifts be used during construction so that we will be able to sleep. We do have the following additional, abiding concerns and ask that they be addressed: 1) preservation of the residential nature of the environment for both humans and animals, 2) access to the Metro Right-of-way road and area, and 3) control of noise and other nuisance factors such as off-road vehicles, beer parties, vechicles being driven into the river, etc. 1. Preservation of residential nature At the moment we are very much concerned about the proposed fisheries project. At first we were told that there would be a fish weir base mounted during the pipeline project for use by the Muckelshoots a few days a year to collect fish during spawning season. .However, this week we learned that the weir base would be used by the Wash. ` i Page 2 State Department of Fisheries to build a collection contraption during the fall months, from September through December,to obtain about 25,000 fish for the hatchery at the Landsberg Dam. The project would involve having a trailer at the site with a fishery's employee on site 24 hours a day. It would also mean that trucks would come down the county right-of-way across the river from us to collect the fish at least once a day and, of course,vehicles would use the "road" for change of shift purposes and staff interactions. The ever-increasing encroachment into our residential setting by the Department of Fisheries is of grave concern to us. During the highway construction a very expensive and massive fish ladder was inserted into the bank contiguous to our property. It was done without hearings or notification of residents. Now we are forced to view a very unsightly, dangerous,yet-to-be used, massive cement structure where there were formerly trees and pleasant green vegetation. We have no basis on which to trust the Dept.of Fisheries. We are very worried that this weir base is the beginning of another unsightly,noisy, industrial-like structure and that we will soon be living with more ugliness and intrusion into our residential beauty and privacy without so much as a discussion. We request: A)that there be a full review of fisheries' intentions and that WSDF be required to complete permit and hearing processes for their proposed project, and in addition B)request that approval for the weir base be removed from the project until the permanent residents in the area and the WSDF have an opportunity to fully explore the long-term use of this beautiful space vis a vis other alternatives. 2)Access On numerous occasions we have also requested that the access road at the top of the hill be properly fenced to prevent nonresidents and vehicles from intruding and misusing the area. During summer months we are often awakened with gunshots,the noise from beer parties, the presence of open fires,people camping in tents and trailers across the river and people from across the river trespassing on our property. We ask that the project include permanently blocking access to the area for unauthorized people and vehicles. 3) Monitoring access We ask that adequate policing of the blocked access area be provided. Since we have had continuing excellent relationships with the project planners, we look forward to meeting you and hope to participate in the discussion of these matters during the April 30 hearing either in person or through our representative. Sincerely, Marilyn Whitley 969 Shelton Avenue � I • 'J WTI* 7 : _ . • ( OTT'TO; CITY OF RENTON HEARING EXAMINER . WILL HOLD A PUBLIC HEARING IN CITY COUNCIL CHAMBERS, CITY HALL ON APRIL 30, 1996, BEGINNING AT 9:00 AM CONCERNING: CEDAR RIVER UTILITY CROSSING LUA-96-027,CU,SM,ECF,W ' This project consists of the installation of five underground utility components,including a crossing ' under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main; King County Water Pollution Control Division Cascade siphon sewer replacement;one empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. GENERAL LOCATION AND/OR ADDRESS: The project Is located In Section 21,Township 23 North,Range 5 East.W.M.,King County,Washington.The utility crossing of the Cedar River will be near river mile 3.1,within the City of Renton,south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway.The water pipeline will continue along the south slope and up to the top ending at Royal Hills Divee,'.SEE.. E".•�.Frr-J::,r `. �fi •#�"9)y: j,• .of''t•Y`-t"°y T �;r,Y=f J�fit•:4-4 � y�•rt,..nc\`•. ' ' 'jg �• r?i i y',,,.4,,,w.••-•:;.:-.,-7.--:;..-c:,..',i r,-1, itA,t;._•-..w..4-',1/—- P--Ar.;...d l-tl*,*:,t I iilt r �t C rF'• pf�6` /"' . ° c yam,", b c• rf',:7.477,' 7Yf_ Y°J „• i' '' •'a`' rY� a ,t;^4.:gs:41z sC ? % .,irh % "'" s : I���FOR FURTHER INFORMATION,PLEASE CONTACT THE CITY OF RENTON,DEVELOPMENT ' SERVICES AT 235-2550. DO NOT REMOVE THIS NOTICEVISION WITHOUT PROPER AUTHORIZATION '• Please include the project NUMBER when calling for proper file identification. I CERTIFICATION " I, ,CcurIc Lia.cVScl'1 , hereby certify that 3 copies of the above document were posted by me in 3 conspicuous places on or nearby the described property on I I'1, ( . Signed: , GU'! 06GCy?/2.0Y1 STATE OF WASHINGTON ) - • ) SS COUNTY OF KING ) • I certify that I know or have satisfactory evidence that _ 6 !)y �, 'f,� -. . signed this instrument and acknowledged it to be his/her/their free and voluntary(q�t•°f4Li�he uses and purposes mentioned in the instrument. C ;' Dated: "! / i /G& _ e�� , ,, Notary Publi n and fo t e State of Wg•srirp�fori.,. Notary (Pr , �G My appointment expires: I�, NOTARY.DOC • : r'et' . . . , , Nrr CITY OF RENTON • HEARING EXAMINER WILL HOLD A • PUBLIC HEARING IN CITY COUNCIL CHAMBERS, CITY HALL ON APRIL 30, 1996, BEGINNING AT 9:00 AM CONCERNING : CEDAR RIVER UTILITY CROSSING LUA-96-027,CU,SM,ECF,W This project consists of the installation of five underground utility components, including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main; King County Water Pollution Control Division Cascade siphon sewer replacement; one empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. GENERAL LOCATION AND/OR ADDRESS: The project is located in Section 21,Township 23 North,Range 5 East,W.M.,King County,Washington. The utility crossing of the Cedar River will be near river mile 3.1,within the City of Renton,south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. T s-; i;j:- t e faV r --- =.' i a" tom\- i •-\\ t' ':1 #''''''''''''t3..- 1%k:to,,w0Aft,., ,_:,--:_-,;.----▪--,_:----,- - ;:z.-4,,Wm- ,,,-;, ,z, .-5/;„-/;:t,‘,,,z.:!,.,:l....,,_ ���� � .rpm\� , `tAgt `��_ ?' � � � /.�" J/1�' ��,,,O. ? 1, . -- j ai'' { ,•c , !•:, J', , : x:�„ -% J,- �` ,—,- 1'i!Jr / .Ai's%„g. -' .1l:icY1 •,;)7„'/'`,,,"/'' '.1 i% �., y F _\``\PROJECT CORRIDOR 1'! L/ / /.'/�F� ��/./!i - r?; / ��`� ``' .. /4 MAP W �, .. i ^'. % ` , = :.:. I, ‘y"i.2,"i 4i Try/ 3 i // ' ' —�\ - _ate\- FOR FURTHER INFORMATION, PLEASE CONTACT THE CITY OF RENTON, DEVELOPMENT SERVICES DIVISION AT 235-2550. DO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION ' P ease`ancluclethe:' ro'ect'NUMBER'When calltn 'for: err. i e erti c ' ,.:...... :. . g. P.rpP f I:.';�d,,.....fi.:atron� `'.; ` :!::' r . 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 Council Chambers on the second floor of City Hall, Renton, Washington, on April 30, 1996 at 9:00 a.m. to consider the following petitions: CEDAR RIVER UTILITY CROSSING LUA-96-027,CU,SM,ECF,W This project consists of the installation of five underground utility components, including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main; King County Water Pollution Control Division Cascade siphon sewer replacement; one empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit (SM) for the work that will be conducted within the river and within 200 feet of the river. Location: The project is located in Section 21, Township 23 North, Range 5 East, W.M.; King County, Washington. The utility crossing of the Cedar River will be near river mile 3.1, within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. Legal descriptions of the files noted above are on file in the Development Services Division, Third Floor, Municipal Building, Renton. All interested persons to said petitions are invited to be present at the Public Hearing to express their opinions. Publication Date: APRIL 19, 1996 Account No. 51067 HEXPUB.DOC 40 :` CITY IF RENTON - _ Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator April 16, 1996 TO: Parties of Record SUBJECT: Cedar River Utility Crossing Project No. LUA-96-027,CU,SM,ECF,W Dear Reader. The date of Tuesday,April 30, 1996, at 9:00 a.m.; has been set for a public hearing to review the above- referenced matter. The hearing, before Mr. Fred Kaufman, Renton Hearing Examiner,will be held in the Council Chambers on the second floor of City Hall, Renton, Washington. A copy of the Preliminary Report to the Hearing Examiner will be mailed to you approximately one week before the hearing. • S The applicant, in this case the City of Renton, will be present at the public hearing. If you have any questions, please call 277-5586. Sincerely, Mark R. Pywe , P Project Man er Parties of Record: Lee &Marilyn Whitley/Chicago, Illinois Document3 200 Mill Avenue South - Renton,Washington 98055 C: This paper contains 50%recycled material,25%post consumer CITY OF REN ION OnYt♦ MEMORANDUM Nj'ATIT%./ Date: April 16, 1996 To: Abdoul Gafour/Water Utility From: �rk Pywell/Development Planning Subject: Cedar River Utility Crossing Project No. LUA-96-027,CU,SM,ECF,W We would like to inform you that the date of Tuesday, April 30, 1996 at 9:00 a.m., has been set for a public hearing to review the above-referenced project for which you are the applicant. The hearing, before Fred Kaufman, Hearing Examiner, will be held in the Council Chambers on the second floor of City Hall, Renton, Washington. The applicant, in this case the City, is required to be represented at the public hearing. You and I should attend. A copy of the Preliminary Report to the Hearing Examiner will be made available to you one week before the hearing. Please contact Sandi Seeger, ext. 5581, regarding picking up or receiving the staff report. If you have any questions, please contact me at 277-5586. HEXMEMO.DOC CITY OF CURRENT PLANNING issommensmigingnielinimeAFFIDAv.rp0FseRvicsovmAimemommgmenimegammomm. •••••• •• ••••••••••••••••...• ........................................................................................................ ............................. ........... ................... • On the_ ----- day of Arvtt, , 1996, I deposited in the mails of the United States, a sealed envelope containing CletfaVAlkaloVt% av\a. cc.Uts 4% documents. This information was sent to: • Name Representing TZ,...1f5r* F...c.otocii CyrearN tv‘ava cie kletti Ort.SIne.r•• • Ze.,0 4156.inem .Da\ltd la%er7.-thrk. amN Vicjg of Roluxii.lzscsotariem izack iNv.cl-elsofrA —r-v&mr:Aa--.tortr, sue • vavNe.v.. cmi DawL IvviteaN--tv•%Le. 4E204 Makcovvy t •%skf‘evles Imusle_tesLet lv,ckta.tA • elerta.,(Signature of of Sender) 90.11AXLIC-- -e-^ Ce • STATE OF WASHINGTON ) SS COUNTY OF KING I certify that I know or have satisfactory evidence that 4.-AfDRict-- i< 6-eri-e-re_ signed this instrument and acknowledged it to be his/her/their free and voluntary act for the .uses,Apd purposes mentioned in the instrument. .....•. ::)./SC7 7(3-',0::•:eAS. Dated: 94 - N10-11 al Notary blic inpi for the State of Was4irigon • Notary(Print) rati-(4..zs% My appointment expires: . '''' • Project Name: ceattvr • ‘ tue.t- Cassot Project Number 9(p -021 , eu. , 5 tA ;UF % L4) NOTARY.DOC ;yam CITY . �F.RENTON "LL 0 Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator April 2, 1996 Washington State • Department of Ecology Environmental Review Section PO Box 47703 Olympia, WA 98504-7703 SUBJECT: Environmental Determinations • Transmitted herewith is a copy of the Environmental Determination and Environmental Checklist for the following project reviewed by the Environmental Review Committee on April 02, 1996:. DETERMINATION OF NON-SIGNIFICANCE-MITIGATED • - CEDAR RIVER UTILITY CROSSING LUA-96-027,C U,S M,ECF,W The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) • .and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition,the applicant must obtain a Shoreline Substantial Development Permit (SM). Location: Near the Southwest corner of the Maplewood Golf.Course.. • The 15 day comment period and the 14 day appeal period for this project will run concurrently. The comment/appeal period will end at 5:00 PM on April 23, 1996. Following the end of the comment/appeal period, the City will finalize its Determination unless comments received require a reevaluation. Appeal procedures and the mitigation measures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 235-2550. If you have questions, please call me at(206) 277-5586. . For the Environmental Review Committee, 7. ee Mark R. P I,AICP Project Manager cc: King County Water Pollution Control Division, Metro Department of Wildlife Larry Fisher, Department of Fisheries David F. Dietzman, Department of Natural Resources Don Hurter, Department of Transportation Sue Rumery, City of Seattle Duwamish Tribal Office Rod Malcom, Fisheries, Muckleshoot Indian Tribe (Ordinance) Rita Perstac, Puget Power AGNCYLTR.DOC 200 Mill Avenue South-Renton, Washington 98055 CITY OF RENTON MEMORANDUM Date: April 3, 1996 To: Abdoul Gafour,Water Utility From: 7f "'ark R. Pywell, For Environmental Review Committee Subject: Cedar River Utility Crossing Project No. LUA-96-027,CU,ECF,SM,W On behalf of the Environmental Review Committee, I would like to inform you that they have completed their review of your project. The Committee, on April 02, 1996, decided that the subject project will be issued a Determination of Non-Significance-Mitigated. 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 by the Environmental Review Committee under the authority of Section 4-6-6, Renton Municipal Code, after review of a completed environmental checklist and other information, on file with the lead agency. This information is available to the public on request. The 15 day comment period with concurrent 14 day appeal period for this project will end on April 23, 1996. Following this, the City will finalize its Determination unless comments received require a reevaluation. Appeal procedures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 235-2550. You should be prepared to make specific factual objections. A Public Hearing will be held by the Renton Hearing Examiner at his regular meeting in the Council Chambers on the second floor of City Hall, Renton, Washington, on April 30, 1996 at 9:00 AM to consider the Conditional Use Permit. If the Environmental Determination is appealed, the appeal will be heard as part of this public hearing. If you have any questions or desire clarification of the above, please call me at 277-5586. dnsmm • CITY OF RENTON DETE'rcnMIINATION OF NON-SIGNIFICANCE (MITIGATED) APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION OF PROPOSAL: This project consists of the installation of five underground utility components, including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main; King County Water Pollution Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM) for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North, Range 5 East, W.M., King County, Washington. The utility crossing of the Cedar River will be near river mile 3.1,within the City of Renton,south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. LEAD AGENCY: City of Renton Department of Planning/Building/Public Works Development Planning Section 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 43.21 C.030(2)(c). Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4-6-6 Renton Municipal Code. These conditions are necessary to mitigate environmental impacts identified during the environmental review process. The 15 day comment period and the 14 day appeal period for this project will run concurrently. The comment/appeal periods for this project will end at 5:00 p.m. on April 23, 1996. Appeal procedures and the mitigation measures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 235-2550. You should be prepared to make specific factual objections. PUBLICATION DATE: April 8, 1996 DATE OF DECISION: April 2, 1996 SIGNATURES: 7-/Gregg lmLlarir Adrftis4Vitoi DATE Depart ent of Planning/Building/Public Works ram Chastain, ministrator DA E Community Service Department Lee er, Fire Chief ATE(72—Y/e Ren n ire Department DNSMSIG.DOC (- CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) MITIGATION MEASURES APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION OF PROPOSAL: This project consists of the installation of five underground utility components,including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main;King County Water Pollution Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings;and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North,Range 5 East,W.M.,King County,Washington. The utility crossing of the Cedar River will.be_near river mile 3.1,within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. MITIGATION MEASURES: 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. 2. A construction plan indicating haul routes and hours,construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted to the hours between 8:30 a.m. and 3:30 p.m.unless otherwise approved in advance by the Development Services Division. 3. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m.,Monday through Friday. Saturday work hours may be arranged with the Development Services Division but no work hours in excess of the weekday work hours will be permitted,and no Sunday construction. Any request for longer weekday hours or weekend hours must be submitted in writing in advance to the Development Services Division. 4. The applicant shall submit a Final Wetland Mitigation Plan to the satisfaction of the Development Services Department prior to the issuance of construction permits for this project. 5. The applicant shall provide an alternative access corridor and work plan that includes,but is not limited to,the following: 1)a landscape element discussing the impact to the existing plant materials between the bike trail and SR-169 and a replanting scheme; 2)_an element describing the signing and alternate route plan for bicyclist and pedestrians;and 3)the replacement plan for the portions of the trail surface disturbed by the proposed work. The plan shall be submitted to the satisfaction of the Development Services Division and the Parks Department prior to the issuance of construction permits for the project. MITMEAS.DOC/ r - CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ADVISORY NOTES APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION OF PROPOSAL: This project consists of the installation of five underground utility components,including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main;King County Water Pollution Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North,Range 5 East,W.M.,King County,Washington. The utility crossing of the Cedar River will be near river mile 3.1, within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. Advisory Notes to Applicant: The following notes are supplemental information provided in conjunction with the environmental determination. Because these notes are provided as information only, they are not subject to the appeal process for environmental determinations. Fire Prevention Bureau 1. The applicant shall maintain emergency access to the construction site at all times. Surface Water 1. Temporary erosion control measures shall be placed around all areas disturbed by any construction activities. This includes all staging and equipment traffic areas. Plan Review- General Comments 1. All plans shall conform to the Renton Drafting Standards. 2. A construction permit is required. When plans are complete three copies of the drawings,two copies of the drainage report,a construction estimate and an application,accompanied by appropriate fees must be submitted to the fourth floor counter. It is recommended to call 235-2631,prior to issuing a check to verify the correct fees are generated by the permit system. Parks Department 1. The trail has only been recently completed and available for public use. The highest times for use are during the late spring(May)through fall(October). This is considered a transportation corridor accessing Lake Washington to the west and Maple Valley to the east. Recommend boring under trail to install utility connections (with sleeve encasing the utility line)rather than cutting across the trail and trenching. Cedar River Utility Crossing LUA-96-027,CU,ECF,SM,W Advisory Notes(Continued) Page-2- 2. There is no discussion in the project description on how plant materials will be affected between the trail and SR 169,how construction will occur in the trail corridor,nor a discussion of a staging area. The Hill side has steep slopes and unstable soils. The vegetation in this area is mature. There is reference to a Wetland Restoration Plan but no listed plant materials nor planting plan. Existing vegetation between the trail and SR 169 will need to be restored/replanted to existing condition prior to construction. Existing chain link fence will need to be replaced at the existing location once construction is completed. It is recommended that any staging area on the trail side of the river be located outside of the trail rather than in the path. 3. No take out area for canoes and other light watercraft has been identified. Typically floaters go ashore at Cedar River Park. 4. More information is needed on the groundwater feed pond and channel and the impacts this will have to the access to the hillside. 5. More information is also needed on how and who will have access to the fish weir for trapping and gathering of eggs. 6. The applicant should establish construction times to minimize impacts on the trail users. If trail is replaced and or needs repairing it should be done to standards provided by the Parks Department. 7. A locking gate system needs to be provided at the south end of the project area to prevent vehicles from accessing the river from above(This has been a problem in the past.). 8. Trail profile of area proposed to be impacted is recommended..Trail is currently at a 1%to 2%slope and needs to remain within this range. 9. A Use Agreement between the Parks Department and Water Department for the water main needs to be prepared and executed. Utility easements for agencies other than the.City need to be negotiated and formalized. 10. The trail needs to be open during the construction since this is a regional trail connection. ADVNOTES.DOC/ , tlo i ENVIRONMENTAL DETERMINATION POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION CEDAR RIVER UTILITY CROSSING LUA-96-027,CU,ECF,SM,W The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review(ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton,King County,and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition,the applicant must obtain a Shoreline Substantial Development Permit . (SM). Location:Near the Southwest corner of the Maplewood Golf Course. THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERC) HAS DETERMINED THAT THE PROPOSED ACTION DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. AN ENVIRONMENTAL IMPACT STATEMENT WILL NOT BE REQUIRED. XXX YOU MAY COMMENT ON THIS DETERMINATION BY 5:00 PM ON APRIL 23, 1996 OR APPEAL THIS DETERMINATION BY 5:00 PM, APRIL 23, 1996. THE COMMENT AND APPEAL PERIODS WILL RUN CONCURRENTLY. A PUBLIC HEARING WILL BE HELD BY THE RENTON HEARING EXAMINER AT HIS REGULAR MEETING IN THE COUNCIL CHAMBERS ON THE SECOND FLOOR OF CITY HALL, RENTON, WASHINGTON, ON APRIL 30, 1996 AT 9:00 AM TO CONSIDER THE CONDITIONAL USE PERMIT. IF THE ENVIRONMENTAL DETERMINATION IS APPEALED, THE APPEAL WILL BE HEARD AS PART OF THIS PUBLIC HEARING. / i tEvim„ 4_ z_._--.-_--.-,:'-,-___--------------_--i-------_----- r % .., ;ice: m > .ti ter` gftr :` 4✓d0:0 . ;r_w°. > ;yam..", Waft'-0Pre, •i--.4;,,`•-•-,. 4,:A.L,..\4,4;i-Z------ -------- ------- -,: 'le::74'1:..,1,„..,..,;_,..?„:„,,,,;,.., __,.4.,,„.,... ...,... ,.,,....,...... ,„.„,‘ ,,,,„, :i;,„_,,,,_:__ __,____,„.....-1; 0.,:i-,.,,,,..e,r.-it,,,,,,,, Are,",-w-,-,0,%I-5--- --:.,:k, ,,,k1/4",----,-z-------;:.- -;---- '-'--;-----4Ft').___e.' '04r,';;;-- ;'' •''.?7,/,,',, •���� t % `�\`PROJECT CORRIDOF ..4 //,/ / ;',/i�/,�4,,// ' , %�}r�g/' ``-� ':GIB r// /,,i. G,f6:, /' FOR FURTHER INFORMATION, PLEASE CONTACT THE CITY OF RENTON, DEVELOPMENT SERVICES DIVISION AT 235-2550. DO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION E a ..ca •::i : o .e>.: II [ ntif tia <<<_:::;«:<:;:<:>::<:<:;;. «;:: <'�'<`' ':P.leas.e'.tnclude:the: ro'ect:::NIjMB R wh..:n.. ..11in :for,: r..: :....r f'�.. de.. . ..ic.�....:11 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 under the authority of the Renton Municipal Code. CEDAR RIVER UTILITY CROSSING LUA-96-027,CU,ECF,S M,W The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition,the applicant must obtain a Shoreline Substantial Development Permit (SM). Location: Near the Southwest corner of the Maplewood Golf Course. The 15 day comment and 14 day appeal periods for this project will run concurrently and end at 5:00 p.m. on April 23, 1996. Appeal procedures and the mitigation measures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 235-2550. You should be prepared to make specific factual objections. A Public Hearing will be held by the Renton Hearing Examiner at his regular meeting in the Council Chambers on the second floor of City Hall, Renton, Washington, on April 30, 1996 at 9:00 a.m. to consider the Conditional Use Permit. If the Environmental Determination is appealed the appeal will be heard on April 30, 1996 as part of the public hearing. Publication Date: APRIL 8, 1996 Account No. 51067 dnsmpub.dot • 40 CITY OF RENTON Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator April 3, 1996 TO: Parties of Record SUBJECT: Cedar River Utility Crossing Project No. LUA-96-027,CU,ECF,SM,W Dear Reader: This letter is written on behalf of the Environmental Review Committee and is to inform you that they have completed their review of the environmental impacts of the above-referenced project. The Committee, on April 02, 1996, decided that your project may be issued a threshold Determination of Non-Significance-Mitigated with the following conditions: See enclosed Mitigation Measures document. Because the Environmental Review Committee imposed specific mitigation measures rather than issue a Determination of Significance, there is a required 15 day comment period during which comments are solicited from various.agencies, jurisdictions or individuals (including the applicant)who may have an interest in the Committee's decision. The required 14 day appeal period will run concurrently with the comment period. The comment/appeal period will end at 5:00 PM on April 23, 1996. Following the end of the comment and appeal period, the City will finalize its Determination, unless comments received require a reevaluation. WAC 197-11-660 states that the responsibility for implementation measures may be imposed upon an applicant only to the extent attributable to the identified adverse impacts of the imposed action. Since an environmental impact statement has not been prepared for this project, any mitigation measure established by the ERC not directly attributable to an identified adverse impact is deemed to be voluntarily accepted by the applicant. Staff urges you to contact the various City representatives, as appropriate, (e.g., the Public Works Division) as soon as possible, to obtain more information concerning specific mitigation elements recommended for this project, if you have• specific questions. This information will assist you in planning for implementation of your project and will enable you to exercise your appeal rights more fully, if you choose to do so. Appeal procedures and mitigation measures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 235-2550. You should be prepared to make specific factual objections. - A Public Hearing will be held by the Renton Hearing Examiner at his regular meeting in the Council Chambers on the second floor of City Hall, Renton, Washington, on April 30, 1996 at 9:00 AM to consider the,Conditional Use Permit. If the Environmental Determination is appealed,the appeal will be heard as part of this public hearing. If you have any questions or desire clarification of the above, please call me at 277-5586. • For the Environmental Review Committee, • 0 Mark R. P ,AICP.. • . • - Project ager DNSMLTR.DOC 200 Mill Avenue South - Renton, Washington 98055 CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) MITIGATION MEASURES APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION OF PROPOSAL: This project consists of the installation of five underground utility components,including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main;King County Water Pollution Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings;and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North,Range 5 East,W.M.,King County,Washington. The utility crossing of the Cedar River will be near river mile 3.1,within the City of!Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. MITIGATION MEASURES: 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. • 2. A construction plan indicating haul routes and hours, construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted to the hours between 8:30 a.m. and 3:30 p.m.unless otherwise approved in advance by the Development Services Division. ' 3. Except for the work in the actual river crossing,construction hours are between 7:00 a.m. and 8:00 p.m.,Monday through Friday. Saturday work hours may be arranged with the Development Services Division but no work hours in excess of the weekday work hours will be permitted,and no Sunday.construction. Any request for longer weekday hours or weekend hours must be submitted in writing in advance to the Development Services Division. 4. 'The applicant shall submit a Final Wetland Mitigation Plan to the satisfaction of the Development Services Department prior to the issuance of construction permits for this project. 5. The applicant shall provide an alternative access corridor and work plan that includes,but is not limited to,the following:"1)a landscape element discussing the impact to the existing plant materials between the bike trail and SR 169 and a replanting scheme; 2) an element describing the signing and alternate route plan for bicyclist and pedestrians; and 3)the replacement plan for the portions of the trail surface disturbed by the proposed work. The plan shall be submitted to the satisfaction of the Development Services Division and the Parks Department prior to the issuance of construction permits for the project - MITMEAS.DOC/ • CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ADVISORY NOTES APPLICATION NO(S): LUA-96-027,CU,ECF,SM,W APPLICANT: City of Renton/Water Utility PROJECT NAME: Cedar River Utility Crossing DESCRIPTION.OF PROPOSAL: This project consists of the installation of five underground utility components,including a crossing under the Cedar River across the Maplewood Golf Course: City of Renton water transmission main;King County Water Pollution Control Division Cascade siphon sewer replacement; City of Seattle Eastside Supply Line replacement casing; One empty casing for future utility crossings; and Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe. The applicant is also seeking a Shoreline Substantial Development Permit(SM)for the work that will be conducted within the river and within 200 feet of the river. LOCATION OF PROPOSAL: The project is located in Section 21,Township 23 North,Range 5 East,W.M.,King County,Washington. The utility crossing of the Cedar River will be near river mile 3.1, within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. Advisory Notes to Applicant: The following notes are supplemental information provided in conjunction with the environmental determination. Because these notes are provided as information only, they are not subject to the appeal process for environmental determinations Fire Prevention Bureau 1. The applicant shall maintain emergency access to the construction site at all times. Surface-Water 1. Temporary erosion control measures shall be placed around all'areas disturbed by any construction activities. This includes all.staging and equipment traffic areas. Plan Review- General Comments • • 1. All plans shall conform to the Renton Drafting Standards. 2. A construction permit is required. When plans are complete three copies of the drawings,two copies of the drainage report,a construction estimate and an application, accompanied by appropriate fees must be submitted to the fourth floor counter. It is recommended to call 235-2631,prior to issuing a check to verify the correct fees are generated by the permit system: Parks Department . 1. The trail has only been recently completed and available for public use. The highest times for use are during the late spring(May)through fall (October). This is considered a transportation corridor accessing Lake Washington to the west and Maple Valley to the east. Recommend boring under trail to install utility connections (with sleeve encasing the utility line)rather than cutting across the trail and trenching. Cedar River Utility Crossing LUA-96-027,CU,ECF,S1Vly W Advisory Notes(Continued) Page-2- • 2. There is no discussion in the project description on how plant materials will be affected between the trail and SR 169,how construction will occur in the trail corridor,nor a discussion of a staging area. The Hill side has steep slopes and unstable soils. The vegetation in this area is.mature. There is reference to a Wetland Restoration Plan but no listed plant materials nor planting plan. Existing vegetation between the trail and SR 169 will need to be restored/replanted to existing condition prior to construction. Existing chain link fence will need to be replaced at the existing location once construction is completed. It is recommended that any staging area on the trail side of the river be located outside of the trail rather than in the path. 3. No take out area for canoes and other light watercraft has been identified. Typically floaters go ashore at Cedar River Park. 4. More information is needed on the groundwater feed pond and channel and the impacts this will have to the access to the hillside. 5. More information is also needed on how and who will have access to the fish weir for trapping and gathering of eggs. 6. The applicant should establish construction times to minimize impacts on the trail users. If is replaced and or needs repairing it should be done to standards provided by the Parks Department. 7. A locking gate system needs to be provided at the south end of the project area to prevent vehicles from accessing the river from above(This has been a problem in the past.). 8. Trail profile of area proposed to be impacted is recommended. Trail is currently at a 1%to 2%slope and needs to remain within this range. 9. A Use Agreement between the Parks Department and Water Department for the water main needs to be prepared and executed. Utility easements for agencies other than the City need to be negotiated and formalized. 10. The trail needs to be open during the construction since this is a regional trail connection. • • ' I ADVNOTES.DOC/ CITY OF RENTON MEMORANDUM Date: April 2, 1996 To: Abdoul Gafour,Water Utility From: �� llark R. Pywell, For Environmental Review Committee Subject: Cedar River Utility Crossing Project No. LUA-96-027,CU,ECF,SM,W On behalf of the Environmental Review Committee, I would like to inform you that they have completed their review of your project. The Committee, on April 02, 1996, decided that the subject project will be issued a Determination of Non-Significance-Mitigated. 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 by the Environmental Review Committee under the authority of Section 4-6-6, Renton Municipal Code, after review of a completed environmental checklist and other information, on file with the lead agency. This information is available to the public on request. The 15 day comment period with concurrent 14 day appeal period for this project will end on April 23, 1996. Following this, the City will finalize its Determination unless comments received require a reevaluation. Appeal procedures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Third Floor, Municipal Building, Renton, Washington 98055. Phone: 235-2550. You should be prepared to make specific factual objections. If you have any questions or desire clarification of the above, please call me at 277-5586. dnsmm STAFF City of Renton Department of Planning/Building/Public Works REPORT ENVIRONMENTAL REVIEW COMMITTEE A. BACKGROUND ERC MEETING DATE April 2, 1996 Project Name Cedar River Utility Crossing Applicant City of Renton Water Utility File Number LUA-096-027,CU,ECF,SM,W Project Manager Mark Pywell Abdoul Gafour Project Description This project consists of the installation of five underground utility components, including a crossing under the Cedar River across the Maplewood Golf Course: 1-City of Renton water transmission main 2-King County Water Pollution Control Division Cascade siphon sewer replacement 3-City of Seattle Eastside Supply Line replacement casing 4. One empty casing for future utility crossings 5. Fish Weir foundation installation for sockeye salmon restoration program for the Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe The City of Renton(Renton), King County Water Pollution Control Division (KCWPCD, formerly known as Metro), and the City of Seattle Water Department (SWD)all need to cross the Cedar River with new utility pipelines at approximately river mile 3.1. Both Seattle and KCWPCD have existing pipelines which lie under the Cedar River at this site. Renton needs to install a 16 inch water pipeline to convey potable water from the new Maplewood wellfield to the Rolling Hills and Talbot Hills areas of the City. The pipeline is a critical component to improve the reliability and redundancy of the City's water system, and to reduce the City's operating costs. KCWPCD needs to upgrade the existing sewer line since the existing siphon sewer line is not sized for current wastewater flowrates,and during surcharge events raw sewage overflows the manholes near the Cedar River. The Seattle Water Department(SWD)has not scheduled a replacement of the existing 36 inch East Side Supply Line at the present time but has planned to upgrade the water line in several years. SWD has expressed a desire to install a 72 inch casing under the Cedar River for the future replacement of the East Side Supply Line. Project Location Map ERCRPT.DOC City of Rentim PB/PW Department Envirc ,ita1 Review Committee Staff Report CEDAR RIVER UTILITY CROSSING LUA-096-027,CU,ECF,SM,W REPORT AND DECISION OFAPRIL 2,1996 Page 2 of 7 An empty 16 inch casing will be installed to provide a capacity for future river crossings by other utilities (e.g.telephone, cable,etc.)without the need to disturb the river. The proposal will require an open channel to be dug across the Cedar River into which the pipes will be installed. The Cedar River will be diverted into a temporary channel for the time that is required to install the pipes in the bed of the Cedar River. This work will be closely coordinated with the state and federal agencies involved with the Cedar River and the fisheries issues. Installation of fish weir foundation for sockeye salmon restoration program. Due to previous involvement with the development of the Cedar River Basin Plan, project staff was aware of the basin management goals and priorities including the need for additional mainstream anadronous fish refuge and spawning habitat and the critical need for a reliable sockeye salmon brood stock collection system. As such,the project has been conceptually introduced to several jurisdictions and management authorities to identify the potential for cooperative efforts. Coordination with the Washington Department of Fisheries and Wildlife,the Muckleshoot Indian Tribe, King County KCWPCD and Surface Water Management,the Cedar River Watershed Management Council,the City of Renton and Seattle Water Department has occurred. The result is a proposed project which will: • Combine the needs of three needed major utility projects for the sake of minimizing the cumulative environmental impacts on the Cedar River Basin. • Install a critically needed fish weir foundation into the river at the project site to support the sockeye salmon restoration program in the basin. • Restore and enhance degraded floodplain wetland habitat to function as valuable anadronous fish refuge and/or spawning habitat while maintaining its hydrologic function. Project Location The project is located in Section 21, Township 23 North, Range 5 East,W.M., King County,Washington. The utility crossing of the Cedar River will be near river mile 3.1, within the City of Renton, south of Maple Valley Highway and across the Maplewood Golf Course at 4050 Maple Valley Highway. The water pipeline will continue along the south slope and up to the top ending at Royal Hills Drive SE. Exist. Bldg. Area gsf N/A Proposed New N/A Bldg. Area gsf Site Area 80,000 sq.-ft-(within utility Total Building N/A corridor 20 ft wide x 2,000 ft Area gsf long) RECOMMENDATION Staff Recommend that the Environmental Review Committee issue a Determination of Non-Significance-Mitigated. ERCRPT.DOC City of Renfon PB/PW Department Ravin ztal Review Committee Staff Report CEDAR RIVER UTILITY CROSSING LUA-096-027,CU,ECF,SM,W REPORT AND DECISION OFAPRIL 2,1996 Page 3 of 7 B. RECOMMENDATION Based on analysis of probable impacts from the proposal, staff recommend that the Responsible Officials make the following Environmental Determination: DETERMINATION OF DETERMINATION OF NON SIGNIFICANCE NON-SIGNIFICANCE-MITIGATED. Issue DNS with 14 day Appeal Period. X Issue DNS-M with 15 day Comment Period with Concurrent 14 da A eal Period. Issue DNS with 15 day Comment Period Issue DNS-M with 15 day Comment Period with Concurrent 14 day Appeal Period. followed by a 14 day Appeal Period. C. MITIGATION MEASURES 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. 2. A construction plan indicating haul routes and hours, construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted to the hours between 8:30 a.m. and 3:30 p.m. unless otherwise approved in advance by the Development Services Division. 3. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m.,Monday through Friday. Saturday work hours may be arranged with the Development Services Division but no work hours in excess of the weekday work hours will be permitted,and no Sunday construction. Any request for longer weekday hours or weekend hours must be submitted in writing in advance to the Development Services Division. 4. The applicant shall submit a Final Wetland Mitigation Plan to the satisfaction of the Development Services Department prior to the issuance of construction permits for this project. 5. The applicant shall provide an alternative access corridor and work plan that includes, but is not limited to,the following: 1) a landscape element discussing the impact to the existing plant materials between the bike trail and SR- 169 and a replanting scheme; 2) an element describing the signing and alternate route plan for bicyclist and pedestrians; and 3)the replacement plan for the portions of the trail surface disturbed by the proposed work. The plan shall be submitted to the satisfaction of the Development Services Division and the Parks Department prior to the issuance of construction permits for the project. Advisory Notes to Applicant: The following notes are supplemental information provided in conjunction with the environmental determination. Because these notes are provided as information only, they are not subject to the appeal process for environmental determinations. Fire Prevention Bureau 1. The applicant shall maintain emergency access to the construction site at all times. Surface Water 1. Temporary erosion control measures shall be placed around all areas disturbed by any construction activities. This includes all staging and equipment traffic areas. ERCRPT.DOC City ofRenion PB/PWDepartment Envirc ital Review Committee Staff Report CEDAR RIVER UTILITY CROSSING LUA-096-027,CU,ECF,SM,W REPORT AND DECISION OFAPRIL 2,1996 Page 4 of 7 Additional Notes Plan Review- General Comments 1. All plans shall conform to the Renton Drafting Standards. 2. A construction permit is required. When plans are complete three copies of the drawings,two copies of the drainage report, a construction estimate and an application, accompanied by appropriate fees must be submitted to the fourth floor counter. It is recommended to call 235-2631,prior to issuing a check to verify the correct fees are generated by the permit system. Parks Department 1. The trail has only been recently completed and available for public use. The highest times for use are during the late spring(May)through fall(October). This is considered a transportation corridor accessing Lake Washington to the west and Maple Valley to the east. Recommend boring under trail to install utility connections (with sleeve encasing the utility line)rather than cutting across the trail and trenching. 2. There is no discussion in the project description on how plant materials will be affected between the trail and SR 169,how construction will occur in the trail corridor, nor a discussion of a staging area. The Hill side has steep slopes and unstable soils. The vegetation in this area is mature. There is reference to a Wetland Restoration Plan but no listed plant materials nor planting plan. Existing vegetation between the trail and SR 169 will need to be restored/replanted to existing condition prior to construction. Existing chain link fence will need to be replaced at the existing location once construction is completed. It is recommended that any staging area on the trail side of the river be located outside of the trail rather than in the path. 3. No take out area for canoes and other light watercraft has been identified. Typically floaters go ashore at Cedar River Park. 4. More information is needed on the groundwater feed pond and channel and the impacts this will have to the access to the hillside. 5. More information is also needed on how and who will have access to the fish weir for trapping and gathering of eggs. 6. The applicant should establish construction times to minimize impacts on the trail users. If trail is replaced and or needs repairing it should be done to standards provided by the Parks Department. 7. A locking gate system needs to be provided at the south end of the project area to prevent vehicles from accessing the river from above(This has been a problem in the past.). 8. Trail profile of area proposed to be impacted is recommended. Trail is currently at a 1%to 2%slope and needs to remain within this range. 9. A Use Agreement between the Parks Department and Water Department for the water main needs to be prepared and executed. Utility easements for agencies other than the City need to be negotiated and formalized. 10. The trail needs to be open during the construction since this is a regional trail connection. D. ENVIRONMENTAL IMPACTS Whether the applicant has adequately identified and addressed environmental impacts anticipated to occur in conjunction with the proposed development? 1. Earth Impacts: During the construction of the Renton water line and KCWPCD sewer line, erosion could occur along the steep slope south of the river, during the rainy months. ERCRPT.DOC City of Renton PB/PWDepartment Envir ntal Review Committee Staff Report CEDAR RIVER UTILITY CROSSING LUA-096-027,CU,ECF,SM,W REPORT AND DECISION OFAPRIL 2,1996 Page 5 of 7 Erosion control measures for the installation of the pipelines on the steep slopes and through the wetlands will include matting, sedimentation fencing, and culverting. A construction restoration plan consistent with the requirements of Renton Municipal Code will be coordinated with other permitting agencies such as the Departments of Fish and Wildlife, Ecology, Muckleshoot Indians Tribe and the US Army Corps of Engineers. Mitigation Measures: No further mitigation is required. Nexus: N/A 2. Air Impacts: Temporary exhaust and dust from construction equipment will occur. Odors may emanate from the new siphon sewer line,however these odors will be less than those experienced currently because of the elimination of sewage overflows. Mitigation Measures: No further mitigation measures are recommended, beyond those proposed by the applicant. Nexus: N/A 3. Water A/ Surface Water Impacts: The open trenching of the Cedar River will temporarily disturb sediments in the river and increase turbidity in the river. The construction window required for the crossing of the river will be limited to the period when it is statistically least likely to rain. The river crossing will be done in about one week, during which the in-river work area will be temporarily dewatered via diversion of flows. This diversion, in combination with conducting the in-river work during the dry season,will substantially minimize sediment movement into the river. The trench excavation area will be dewatered during the installation of the utility pipeline casings. If the water is turbid, it will be discharged into the existing KCWPCD sewer line, or through a biofiltration swale with sedimentation trapping areas. If the water is not turbid, it will be discharged to the surface water system. A river restoration and mitigation plan consistent with the Requirements of Renton Municipal Codes will be coordinated with other agencies and jurisdictions such as the Department of Fisheries and Wildlife, Department of Ecology,the Muckleshoot Indian Tribe, and the US Army Corps of Engineers. Water Quality Monitoring: Continuous water quality monitoring upstream and downstream of the river construction site(RM. 3.1)will be conducted before, during and after the project. Background water quality will be evaluated for the two weeks prior to project implementation and used for comparison throughout the project. Mitigation Measures: No further mitigation is required. Nexus: N/A ERCRPT.DOC City of Renton P/B%PWDepartment Env _ rental Review Committee Staff Report CEDAR RIVER UTILITY CROSSING LUA-096-027,CU,ECF,SM,W REPORT AND DECISION OFAPRIL 2,1996 Page 6 of 7 B/ Sensitive Areas Impacts: Three main sensitive areas exist within the project corridor including the Cedar River mainstream and riparian floodplain, Forested Category 2 riparian wetland system, and a Class 3 stream. The project involves excavation of about 8000 cubic yards in wetlands for the utility trenches, structures and manholes. It is anticipated that the project will cause minor impacts to the isolated wetland system. All wetland soils and vegetation areas crossed with a trench will be restored to its original condition using native soils. The conceptual mitigation strategy is to remove some of the existing vegetation during the construction of the by- pass channel in the floodplain, and restore the channel groundwater flow and gravel bed, and replant throughout the project area with native species with good rooting and sediment trapping characteristics. The Class 3 stream will be diverted through piping during the construction of he Renton water line. A wetlands and stream restoration plan consistent with the Requirements of Renton Municipal Codes will be coordinated with other agencies and jurisdictions such as the Department of Fisheries and Wildlife, Department of Ecology,the Muckleshoot Indian Tribe, and the US Army Corps of Engineers. Mitigation Measures: The applicant shall submit a Final Wetland Mitigation Plan to the satisfaction of the Development Services Division prior to the issuance of any construction permits for this project. Nexus: Wetlands Management Ordinance C/Fish and Aquatic Life Impacts: This project has minimal impact to fish during the river crossing. The project will be timed to avoid adult migration and juvenile outmigration periods. To minimize impacts to rearing fish and other aquatic life,the in-river work area will be minimized through the use of bladder dams, sheet piling, and a diversion by-pass channel. The by-pass channel will allow fish passage and minimize channel scouring and turbidity(such as a concentrated by-pass pipe). Also,by using the open-trench crossing method, actual construction time in the river will be minimized. The by-pass channel system will be modified into a groundwater-fed pond and channel after construction is completed. This channel and pond can be designed to function as-off channel high flow refuge, rearing, and possibly spawning habitat for salmonids,depending on the Department of Fisheries and Muckleshoot Indian Tribe requirements. In addition,the concrete cap that will be placed over the river crossing will be designed to function as a fish weir foundation. This will allow trapping of sockeye and other fish for the purpose of gathering eggs and sperm as part of the efforts to restore fish stocks in the river. Mitigation Measures: No further mitigation is required. Nexus: N/A 4. Parks and Recreation Impacts:. The Parks Department has raised concerns regarding the impacts this project could have on the adjacent regional trail. The Utilities will need to obtain Agreements from the Parks Department prior to the start of the construction for this project. These agreements will need to address the concerns raised in the notes to the applicant. ERCRPT.DOC City of Renion PB/P)V Department Envir rntal Review Committee Staff Report CEDAR RIVER UTILITY CROSSING LUA-096-027,CU,ECF,SM,W REPORT AND DECISION OFAPRIL 2,1996 Page 7 of 7 Mitigation Measures: No further mitigation is required. Nexus: N/A 5. Transportation and Construction Impacts:.During the construction phase of this project the applicant will need to access the project site with construction vehicles. City staff is concerned with the impacts that these vehicles may have on the peak hour traffic flows during the morning and evening hours. Staff has recommended limits on the hours during which construction traffic may use the adjacent roadways. There are single family residential areas adjacent to the proposed construction site. City staff can understand the need to complete the work within the river as quickly as possible but is also concerned with the adverse impact of noise on these residents. City staff has recommended a mitigation measure to reduce the impacts of the noise generated at this site. Mitigation Measures: Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. A construction plan indicating haul routes and hours, construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted to the hours between 8:30 a.m. and 3:30 p.m. unless otherwise approved in advance by the Development Services Division. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m., Monday through Friday. Saturday work hourss may be arranged with the Development Services Division but no work hours in excess of the weekday work hours will be permitted, and no Sunday construction. Any request for longer weekday hours or weekend hours must be submitted in writing in advance to the Development Services Division. Nexus: Environmental Review Ordinance(SEPA),Noise Ordinance E. COMMENTS OF REVIEWING DEPARTMENTS The proposal has been circulated to City Departmental/Divisional Reviewers for their review. Where applicable, these comments have been incorporated into the text of this report as Mitigation Measures and/or Notes to Applicant. X Copies of all Review Comments are contained in the Official File. Copies of all Review Comments are attached to this report.. ERCRPT.DOC :.:..TARE' : : COMMTTEE >< > <' > >> > ' ><> To: GreggZimmerman, Planning/Building/Public Works Administrator Sam Chastain, Community Services Administrator Lee Wheeler, Fire Chief From: Jim Hanson & Mike Kattermann ::i::•: Y.i ..i} iii}}iiii:i•iiiiiiiiiiiii:Jiiii}}'}}}}}}}}i:ii}i:iiii:^}ii}}iiii:ivi};;p}i}i}iiiiiiiii:4}}}iii}iiiiiii}i;{::iiiiiiiiiiiiiSi;i}iii}ii:iiii:i}}iiiiii:iiii}i:iiiiiiy:i}:iibiiiiii:iiiiiiii;4}ii}iii>ii:i i_ i}iiii:'>:V�� il:'LL ti:i:::':•:}i:i:: deifeeditollbbfivimiimmgoommomignommimiggiommgmammonimimm :.�.act,.on...........................:... ...:.........................................................................................................:....:.::...::..:::...................................................................:..:.::::::::..�::::::::. Agenda listed below. Cedar River Utility Crossing(New) (PywelU5586) LUA-96-027,CU,ECF,SM,W .The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition, the applicant must obtain a Shoreline Substantial Development Permit (SM). Location: Near the Southwest corner of the Maplewood Golf Course. Maplewood Fish Channel(Discussion) (Pywel1/5586) LUA-96-009,SM,ECF Response to letters received during comment and appeal period (memo enclosed). cc: J.Covington,Executive Assistant to the Mayor L.Warren,City Attorney (R) F.Kaufman,Hearing Examiner S.Carlson,Economic Development Director(R) J.Gray,Fire Prevention A.Larson,Fire Prevention(R) P.Pierce,P/B/PW Admin. ''_', . City of ton Department of Planning/Building/Pub 'orks ENVIRONMENTAL 8 .,LVELOPMENT APPLICA . .. ON REVIEW SHEET REVIEWING DEPARTMENT: reurit.gCOMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. BUILDING AREA(gross): N/A , SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTON/WATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code)COMMENTS Element of the Probable •Probable More Element of the Probable Probable More Environment Minor Major information Environment Minor Major Information impacts impacts Necessary Impacts impacts Necessary Earth Housing Air f,r Aesthetics Water l Light/Glare /- Plants >/_ ✓� Recreation i../' LandrShorellne Use I// J— Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation srlik /ta/1 /7 CS C/i7/ ,zlzer) /'Crr' p 'v/ cfr9c'/ reek/ ezio 6.z. ieY ia:1 2/i c y e%5•e.,�/9� 6ClOgr i!c' . 7 y /) ._. 71I/74?s -2. 0,--r �/-/ / 4/2�� ) h/ /2 Yh i(CCf ) , � ✓u, .c-- a. -00s d aY> J r-r✓G/1J/'vs' c.e ( Cd. 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Sl y ►&! ps SG?3 (21-,i 9 vci a-- 17,z, </9669;-) c--?-- pio. 0)-,09 /71SW ---,1 ?t' 407/ 2 S / //JZ Z 6' X774 a 4!p-74,iT 731 9k ' 1 L,/CR 4/ ! /_�/�,1>r ' ' „ I ! • / /72 .-7,f, „5-c-.--,(2,(2 I ; /22- 2-PW /Z(1- //2 IP('2 C 2. r7P /2-tC;2&./3- ( /./(7.7 94: p?1,/,?-tti -?99 /.-3/770 , (. /04J,Z)aac27 /z96,69,/(5w --)2v/c 6/e4z,(2_czcv_4.27 A-;% i(9v udolo ///2-r:/20<2- 1 c:/H CITY OF RENTON MEMORANDUM Date: March 20, 1996 To: Mark Pywell, Current Planning From: Kayren K. Kittrick, Plan Review . 3 Subject: Cedar River Utility Crossing LUA-96-027, CU, ECF, SM, W CODE REQUIREMENTS SURFACE WATER 1. Temporary Erosion Control measures shall be placed around all areas disturbed by any construction activities. This includes all staging and equipment traffic areas. PLAN REVIEW- GENERAL 1. All plans shall conform to the Renton Drafting Standards. 2. A construction permit is required. When plans are complete three copies of the drawings, two copies of the drainage report, a construction estimate and an application, accompanied by appropriate fees must be submitted to the fourth floor counter. It is recommended to call 235-2631, prior to issuing a check, to verify the correct fees generated by the permit system. RECOMMENDED CONDITIONS 1. Temporary Erosion Control must be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of this project. 2. A construction plan indicating haul route and hours, construction hours and a traffic control plan must be submitted for approval prior to a construction permit being issued. Haul hours are restricted between 8:30 a.m. to 3:30 p.m. unless approved in advance by the Development Services Division. 3. Except for the work in the actual river crossing, construction hours are between 7:00 a.m. and 8:00 p.m., Monday through Friday. Saturdays may be arranged but no hours in excess of the weekday hours, and no Sunday construction. Any request for longer or weekend construction hours must be submitted in writing in advance to the Development Services Division. CEDARCRS.DOC pc: Neil Watts - City of ton Department of Planning/Building/Put larks -z'NVIRONMENTAL it DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: 'plan Regte `Lloky COMMENTS DUE: MARCH 21, 1996'''Th o,. ,9017. APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL5 ,fit) • • PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 4�r4,4. ,`�`gs 4 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE t41/1"%fii SITE AREA 80,000 SQ.FT. I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL THE APPLICANT(CITY OF RENTONIWATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information impacts Impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic./Cultural Natural Resources Preservation B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to property assess this proposal. P,yj 7�GL /lGr� S/010/,��0 Sig a of Director or Authorized Representative Data/ DEV .DOC Rev.701D3 c` • City of ton Department of Planning/Building/Put /orks •LNVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT:s,,C, „face4 to uia4,ev COMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W ''° DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTON/WATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code)COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major information Environment Minor Major Information Impacts impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information Is needed to properly assess this proposal. Signa 6,bf Director or Aut orized Representative Date 3/° 9* DEVAPP. Rov.1093 City of ton Department of Planning/Building/Put /orks -ENVIRONMENTAL 8 DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT:1 a COMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTON/WATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable - More Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts impacts Necessary impacts impacts Necessary Earth Housing Air Aesthetics Water Ught/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic./Cultural Natural Resources Preservation B. POUCY-RELATED COMMENTS C. CODE-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have Identified areas of probable impact or areas where additional information is needed to properly assess this proposal. q • 3/,/0 ! SI na of Director or Authorized Representative Date/ DEVAP .•• Rev.10/23 brig of ton Department of Planning/Building/Put ENTON ROBE DEPT. ENVIRONMENTAL & DEVELOPMENT APPLICAriOwiEtR inew' IEET REVIEWING DEPARTMENT: E Pireue COMMENTS DUE: MARCH 21, 96 Eibj APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7 096-5MIIV ..(7 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTON/WATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code)COMMENTS Element of the Probable Probable More Element of the Probable Probable More Environment Minor Major information Environment Minor Major Information Impacts Impacts Necessary impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Gla►e Plants Recreation LandfShoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation A)0 01" 1 d.c/s la re B. POUCY-RELATED COMMENTS C. CODE-RELATED COMMENTS/144;jet I ri r eHCy 4CCes5 47 // ]�u`! lutes have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable Impact or areas We PPn where additional in • ation is needed to property ass: this proposal. C� / 01002 n CJJ / (O Signature of D : or or Authorized Representative / Date DEVAPP.DOC Rev.10193 City of- on Department of Planning/Building/Pub brks ENVIRONMENTAL it DEVELOPMENT APPLICA , . ON REVIEW SHEET REVIEWING DEPARTMENT: L v' COMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. BUILDING AREA(gross): WA SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTON/WATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element or the Probable Probable Mon Element of the Probable Probable More Environment Minor Major Information Environment Minor Major Information Impacts Impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Light/Glare Plants Recreation LandYShoreline Use Utilities Animals Transportation Environmental Health Public Services Energy/ HlstorfdCultural Natural Resources Preservation B. POLICY-RELATED COMMENTS �p ? c)\tI ON bkl-- Co)"\01L5.-Wr C. CODE-RELATED COMMENTS • We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to property assess this proposal. �/ ( i I1 i.r72, I`11!o Signature of Director or Authorized Representative Date DEVAPP.DOC Rev.10193 City oG___Iton Department of Planning/Building/Pu.,.,.. —forks ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: Cb s4.1tw .tei4 Se ti(Cez COMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTON/WATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA: 80,000 SQ.FT. I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTON/WATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL ,flP DEVELOPMENT PERMIT(SM). , �oN A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS ��r`LOdi ,996 Element of the Probable Probable More Element of the Probable Probable ore Environment Minor Major Information Environment Minor Major infb impacts Impacts Necessary Impacts impacts NecesialliV Earth Housing Air Aesthetics Water Light/Glare Plants Recreation Land/Shon3line Use Utilities Animals Transportation Environmental Health Public Services Energy/ Historic/Cultural Natural Resources Preservation li B. POLICY-RELATED COMMENTS Ittit C. CODE-RELATED COMMENTS LEE We have re ' wed this a li lion with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas whe i o eeded o properly assess this proposal. 3- 1Z16 a e of Director or Authorized Representative Date APP.DOC Rev.10/93 City of, ton Department of Planning/Building/Pu forks ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: pot COMMENTS DUE: MARCH 21, 1996 APPLICATION NO: LUA-96-027,CU,ECF,SM,W DATE CIRCULATED: MARCH 7, 1996 APPLICANT: CITY OF RENTONIWATER UTILITY DEPT. PROJECT MANAGER: MARK PYWELL PROJECT TITLE: CEDAR RIVER UTILITY CROSSING WORK ORDER NO: 78068 ' LOCATION: NEAR THE SW CORNER OF THE MAPLEWOOD GOLF COURSE SITE AREA 80,000 SQ.FT. I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: THE APPLICANT(CITY OF RENTONNVATER UTILITY DEPARTMENT)SEEKS ENVIRONMENTAL REVIEW AND CONDITIONAL USE PERMIT APPROVAL TO CONSTRUCT AN UNDERGROUND CROSSING OF THE CEDAR RIVER FOR CITY OF RENTON, KING COUNTY,AND CITY OF SEATTLE UTILITY LINES. THE PROJECT WILL INCLUDE THE CONSTRUCTION OF A FISH WEIR FOUNDATION. THE APPLICANT MUST OBTAIN A SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT(SM). A. ENVIRONMENTAL IMPACT(e.g.Non-Code) COMMENTS Element of the Probable Probable Mon Element of time Probable Probable More Environment Minor Major Information Environment Minor Major Information impacts impacts Necessary Impacts Impacts Necessary Earth Housing Air Aesthetics Water Llght/Glare Plants Recreation LancYSsoreline Use Utilities ansp / Animals Transportation `// Environmental Health Public Services E,erilyi HistoridCullural ' Natural Resources Preservation V)o u_ntpad-- b B. POLICY-RELATED COMMENTS C. CODE-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to property assess this proposal. Signature of Directo f or A orized Representative Date DEVAPP.DOC Rev.10193 NOTICE OF PROPOSED CONDITIONAL USE/ENVIRONMENTAL REVIEW APPLICATION RENTON, WASHINGTON A Conditional Use (CU) Permit, Environmental Checklist Review (ECF), Shoreline Substantial Development Permit (SM), and Wetlands (W) Permit Application has been filed and accepted with the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. PROJECT NAME/NUMBER: CEDAR RIVER UTILITY CROSSING/LUA-96-027,CU,ECF,SM,W DESCRIPTION: The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition, the applicant must obtain a Shoreline Substantial Development Permit (SM). GENERAL LOCATION: Near the Southwest corner of the Maplewood Golf Course PUBLIC APPROVALS: Environmental Review (ECF) Building Permit Shoreline Substantial Development Permit (SM) Conditional Use Permit (CU) Wetlands Permit (W) The application can be reviewed in the Development Services Division located on the third floor of Renton City Hall. Comments will be accepted anytime prior to Public Hearings, during Public Hearings, or prior to an administrative site plan approval. For further information on the application, or if you wish to be made a PARTY OF RECORD and receive additional notifications, by mail, of the City's environmental determinations, appeal periods and/or the public hearing date(s) for this project, please contact the Development Services Division at 235-2550. Please include the project NUMBER when calling for proper file identification. ' i' 110" Via: 'c _.�\\-_:.-: , /_ % "' _- tr // ,_„( 4.5::�Zn e, 1 i•`\1� ���''.,1`� \` ������/yam// � `�� 4 -;- - --c.,1.---t----smot.***403k_ ...__ .....,;- _-,...:---.A. itzt—,„. „.A0 if/-pri---.----=:-. -----A , ,. ,_,,,,,*,-- ...%:_ __,.1,1,4x4,,,,,.;„vm&-___._ ,%.,..-z--<,.:!.s..p. —_-_, 0.-,-.4,,:-.,‘,. ,,,ag ,,-___,-, -0 '0- -°' - ,...24,4„,.,..,,.2W4.:;-,z:a,$ _, ,--------.:-_--------____----_ __----_____7:5-4- -.A 1--4------ ' Pff-------,-----------,-----------_,---- ,-- - *-- - A1-- ..1.,...--tc--*-.„.M,S'okik ___.- - .-------------- p! --0 ‘,.„, .,,.,,...,0' ,-----------*;-----,;,-;_ ----%'.-0 ,.../Av.. -._ fe"..54,: i,vt''' -___---_,--__,_ ------ ..7:4-^ 4 -. ;>iP1'-4 .------------------_."''- :,..7 Ivi -_,.. ----,--..-:--.„,,,,,,„..00,,,, ---_______-_-:_-__z-,_; o 1 /i i�2a� `.15--..::,f.A. \� art 10 09% ��p ,,, //: /I'�� ham\ S �, � `�3 �� I/, /rY//,/// �/ ,,,, r 2 \ �ft /fir ', // , {e /s//, ,/s` �, ' //'I fl _ PROJECT CORRIDOR =:t.S.1! l'-G/ // ///;//�/¢/// //�// A i// /'itr • ;114 �,4G��i� —/�� \ •��. / MAPLEWOOD COLF COURSE 4 per/ \� ` � 0 /i / /il,s / / , .s / mo% � �� �� / ,,A%,1/ , /,'y/ / . , , / kilo 9♦� •,• _ •'-�� � /i /i /•// ////,f/ /•,/ /, e/ dIG/r t � 3'/ / �/ / / / GENMALOT.DOC • " • OF RENTON t-t-,N \ye, • DC' *c;:rnent Services Division n 7 n CO Mill Avenue South fiAP, 08'S 6 I ::;:..4v41 U 3 Renton, Washington 98055 ff57072 U.S. ROM-AC.1E 5126900485 LEPLEY YOLANDA 19826 97TH AVE S RENTON WA 98055 frf 101 0 As SUCH #_ATTEMPTED UNKNOWN C: SUFFICIENT Annprc:c iPA.1,P, 411 DEL A 3E CANT >, \4•_•VCI OUTE # NOTICE OF PROPOSED CONDITIONAL`USE/ENVIRONMENTAL REVIEW APPLICATION RENTON, WASHINGTON • A Conditional Use (CU) Permit, Environmental Checklist Review (ECF), Shoreline Substantial Development Permit (SM), and Wetlands (W) Permit Application has been filed and accepted with,the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. PROJECT NAME/NUMBER: CEDAR RIVER UTILITY CROSSING/LUA-96-027,CU,ECF,SM,W • DESCRIPTION: The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition, the applicant must obtain a Shoreline Substantial Development Permit (SM). GENERAL LOCATION: Near the Southwest corner of the Maplewood Golf Course PUBLIC APPROVALS: Environmental Review(ECF) Building Permit Shoreline Substantial Development Permit (SM) Conditional Use Permit (CU) ' Wetlands Permit (W) The application can be reviewed in the Development Services Division located on the third floor of Renton City Hall. Comments will be accepted anytime prior to Public Hearings, during Public Hearings, or prior to an administrative site plan approval. For further information on the application, or if you wish to,be made a PARTY OF RECORD and receive additional notifications, by mail,of the City's environmental determinations; appeal periods and/or the public hearing date(s) for this project, please contact the :Development Services Division at 235-2550. . Please include the project NUMBERwhen calling for proper file identification.•_—, , ,---„— _,..-„AvrAz,,,v, .,.- vi,,,,,,,,, ,..‘"rwix---,__________ _.-- --......z-vd-2......,' --.-_,,,,,,,,,,,,- -_,-,,,,,,,,,,,,,,--- 1.... .e%-i f...:------ ).,o -p„,. , .4,40.,,,4\ ,, ,----------_,..„--,. A..t..,,-/, ,- ---,-i--:p-,-%-_--;;i-try-/: ,_.--:::::::----- ± "'‘" v : z ' JU// /% .`A\ 3 \� / / \ /, / 'ma''''' ...-/a1P-- .401...—. --__'----* A .e,.4.*„,. c, 1� ��/ \ T `� 2 ` ,.1��. i:•*///�/�,-,jam ` = �w- �is ��k. •o.t.mtk .._ ....._---,...... ....------.- ._.-.-.1.--. ------ ._.„.....]-= R ,�� �- // /��� - ..."- -.--y• Pbi, --ece.. .-:::-%,„- -----,-, ,-,-- -__Oli,A,011*- ---- --- ---------- --tP.• ; 0---For)',//://`"/,//////4/1,fri,X- %-.010157213-12211.,w.,, ,.., -",t'-`,. , ViVFWO,Ate.--___ ---------_------- ----------..,j3t0ite-_,;10 /16//;`,Voi,.(///i,"'//,V, C yJ PROJECT CORR. 0 •il i// /? //i ,/,./j,//r/ // // , $ . , i EWOODGOLFCOURSE , .. GENMALOT.DOC • • • • • . . •- . „ . . „ ' • • . . • • • . •„ 1 111 "111111 11 Ill 1111 11 11 11 11 11 11111111 1111 1 • -• •. • • • • • Wit° ; • .• * - _nnt servIces rs'll KJ.. r.alt . n[ z Ir4 WC-V-13 055 FIR 0 8'9 6 U kDej t B9 411 aS w 7PIB5m4E0T7E68 U.S.pçTAcE iak FETi.444, 4'.ta • • • 8EivoEN .• irnbeCiVE&A „. FonvowinomS,GLeio4s.tomo ,• - _ PACIFIC REAL ESTATE MOR G 1134000070 767 NORTH E STREET SAN BERNARDINO CA 92403 _ • , . . . 1 • • NOTICE OF PROPOSED CONDITIONAL USE/ENVIRONMENTAL REVIEW APPLICATION RENTON, WASHINGTON A Conditional Use (CU) Permit, Environmental Checklist Review (ECF), Shoreline Substantial Development Permit (SM), and Wetlands (W) Permit Application has been filed and accepted with the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. PROJECT NAME/NUMBER: CEDAR RIVER UTILITY CROSSING/LUA-96-027,CU,ECF,SM,W DESCRIPTION: The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of,.a.Fish Weir foundation. In addition, the applicant must obtain a Shoreline Substantial Development Permit(SM). GENERAL LOCATION: Near the Southwest corner of the Maplewood Golf Course PUBLIC APPROVALS: Environmental Review(ECF) Building Permit Shoreline Substantial Development Permit(SM) Conditional Use Permit (CU) Wetlands Permit (W) The application can be reviewed in the Development Services Division located on the third floor of Renton City Hall. Comments will be accepted anytime prior to Public Hearings, during Public Hearings, or prior to an administrative site plan approval. For further information on the application, or if you wish to be made a PARTY OF RECORD and receive additional notifications, by mail, of the City's environmental determinations, appeal periods and/or the public hearing date(s) for this project, please contact the Development Services Division at 235-2550. Please include the project NUMBER when calling for proper file identification. • 0-01' "''-- °A V1-1.00.1'-if -- , ,,, ____:- --------------i:,:%w" /-..'",•%; ----:";)'-7,e-*---1 -.0e0-...4.- ,- - t ,..:,.._,:*.m,-.4-miyiekvt- -----:--- - ---:------- ------islsc. -A,, ,..- -_,; -6-:---4---___------------------ --. or k ' � y/�.. .._ ,‘";.•:,.„ 3:;" :.,,,. - -- -.-- .--.__ -ft..„ iii j14"";.---fr-,--=''--!--2-\ ''it � � � ›,,SONEGMEN, ,_„I3.'".., ',,, -.V.,,,V*Pg0,01,,, ‘ -'----------___________----'-------------„,:tilig ,,, ," •;%//;,///7"//1,/,//1//,c7, A...„0: .,,....... _........_ _\\_�\��\ T1. , ry//. /i, ,,'. is//.„i/i;'/,/.' 7,„. ,,,, ',0 ir,,,,,;/,,,,,/, 1.__�-� //%//.a/r / /// / / Cr i/• � �0.ctip 44.0 PROJECTCORIC0 R`s_ /' i///;�//;�//ii , / 1//4/ f'4'z ii; GO' -' 7 '� y� M1IAPLEIVOOD COLF COURSE r r ��`� `�ems+_'-'.��rz ♦j�•/i///i//Ni/5�/ii:' /'�i/i // //;:. GENMALOT.DOC • • , • . • • . . . . n'T';' P7MTPN cc,e Sorvicos .7" 200 Mill Avenue South n 01 Renton, Washington 98055 * 0" .o;•• I METER WA 7154076 .r. TURN TO SERIDER , 8645530230 - INT'LLETTER CLASF MAA THRONSON PAUL T TV1UST BE IN ENVELOcES 63 YONHEE-DONG A-2 PREPARFD INt PACKAGE. SEODAEMUN-KU SEOUL 120, KOREA 0 • , „ NOTICE OF PROPOSED CONDITIONAL USE/ENVIRONMENTAL REVIEW . APPLICATION RENTON3 WASHINGTON 1 A Conditional Use (CU) Permit, Environmental Checklist Review (ECF), Shoreline Substantial Development Permit (SM), and Wetlands (W) Permit Application has been filed and accepted with the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. PROJECT NAME/NUMBER: CEDAR RIVER UTILITY CROSSING/LUA-96-027,CU,ECF,SM,W DESCRIPTION: The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar , river for City of Renton, King County, and City of Seattle utility, lines. The project will include the construction of a Fish Weir foundation. In addition,the applicant must obtain a Shoreline Substantial Development Permit (SM). GENERAL LOCATION: Near the Southwest corner of the Maplewood Golf Course PUBLIC APPROVALS: Environmental Review(ECF) Building Permit Shoreline Substantial Development Permit (SM) Conditional Use Permit (CU) Wetlands Permit(W) The application can be reviewed in the Development Services Division located on the third floor of Renton City Hall. Comments will be accepted anytime prior to Public Hearings, during Public Hearings, or prior to an administrative site plan approval. For further information on the application, or if you wish to be made a PARTY OF RECORD and receive additional notifications, by mail, of the City's environmental determinations, appeal periods and/or the public hearing date(s) for this project, please contact the Development Services Division at 235-2550. Please include the project NUMBER when calling for proper file identification. --==.zo. 7; 7 -- ,,--;-/-,--, ---=',,,fe" ,,--4M,,k;i:Rk ,r---:.---------z----_- ___----- -,-- Ev. ____,.,,-,-- -•--.____ '- r--3-,..,.- :_, -2•4.,-- . ------<"-- ----4----- %,,, tkr-kr: ,,,,,::, ,X,:,,,,riv----,----7.----.---,---2-------z-z------ -------- 15, : ---,-.,:-__---t,,-:-5---0'.:::,i.---,inr=, ---- ----...tc:-.I -4x:I - 0 . ' '''',-- 40-0,00 :, _------------_-___—___ c,-- :.i,..w .4"„: a,.:, •Ti;.,____\.. ., -.AV.r-- -'w .0-w .roir'1 -..45q.,1“,-:-.," :11-7;-;:k „4,4,-...,------.40.----,A.3... .y--- • :ktv.:•,•?4,..;,,*,*3,1 4 -.7.---..t.--se, ,,,,,,0 . ;---------z---_-_,___. ,-7--"ji I-or-e"---=--' '.:11- ....---••••:„---'Ac...1.,.......:**.: -4,... ..:-.---,:m„- r. .0. ,",e= -.-- .,-____- _,-------„,-....;SC'4,1tAeR--- ---------__---_-----_---:---------___!ik~: x '-_,„-% •-___:0,--z;___-____---- --- --------:::______'-z-,_ _----- ---._.------------z---;.!',--, -0.-00...-A,- -------- ).:,'",..• -.A.4., ---_--------------- ----------_-_----'------- ----------n't:-i! - .;4<-, ..,.. .-. ,-",--.1------=--'--------_-si;=-= -• --$0-:-.07-4...-L--4,--------- -::f:-5-----;k0iftts,c --------___ w ,, <- ,)-4r-.,.!:',,------------,__-_-_-.±.,;,-,-. f 4 i0,4- -- --4 44W4t-'"." 4,04104: ______•---.,,_ ---•---- --i,-'' ?-."-% . -• ---- -,-,i i''' lo ,0'... : 0'-' fitt-t-P_ Valet04 ,_:::_, ..-'4.4 .4':'00P7. 111•-,, --t-21//I/"/: °p. 'ff, tkt-.‘ 04.00744-------_ -----:•-------. -.--.-, :gA !-.1 ,0'....07.',-. . 1//////;1/40 ..4,-0- -4';1 43.r.'Al-ZZ:••.,ft.-IMO&-—---' - ------- __,—....._,..._,..__________ ------------.4:410-,. q-1,- -io7*,,', ,„'/:,/,//,,,,,,ii,i;ier, ,. vp-„„ogariazgin ...44-60.mo, -..--",..___-,._ .:Igg.._....L4,,t1. _____,-------__,_ „w_41„,,na, .,.•dr-,•04/////:,7,,.:47,7/,.//,:,„/,,, ,'//v/v/ //,//),/,;,,:,,,,, m,„/"„;;;,,,,;:; ,,y1,,,,t, /,/, , ,, , -1----------___„____________---___ --------,----- --------,-*Sf Pi' / / ,,' ,i •, ;'" =-------- ---------____, --- -,-_ -'"-- ---- ---*F-S'SPI-". Oil/ 14/Ivi ,'„ie:, -- ---__----- .:--:VP ' Pill/A///f/i5/6/5.1//i(//1/ //5'el. ---------- -41-9. / //frff/hit:: GENMALOT.DOC a • • • . • . . . . • • 1! 111 1 11111 1111 111 11111111 11 1 I 1 11111 1111 I . . • . . • • • • . ,:•••• . . _ GiTY OF REWM • * Dev-;,opment ServicesecDuivtllision ZOO On Avenuo r !.41 R 0 8'9 6 5.04,c7.g. 2 .7,7 / l'AETER Reatcm,Wastiagton s305a WA 7154076 LI,S.P STAGE 2123059068 B+E FINANCIAL INC %PATRICK EASTER 18000 PACIFIC HWY S SEATTLE WA 98188 cr. (moRSED /V71Ths-e•.. . . , „ .• - „ •" - • • r 11UNARLE 1(1 r uRY/Arlu tLy (&j 1996 1ii Ft 1 rn-rItPm WRITr , • , iti !LAI :.:;;;:.;: :.>;;'.:;.;:.;;::::.;:.;;:::.;;;;:;:.:...:;;,:::::<:::.;:.;:.;•.:.:;:.;;'.:.::.::.::.:i��:t/:I»I»OPM�..T..S�R....GI»S DI.1l.S..C�N.. ::. :. U.RR UNDIN PROPERTY. O.W11 E ::4:;?: :i"i:J:: :Y:::ii'j.y: ii::;;;y<:y: :<::>::::?'• ub ;:;::.:: PROJECT NAME: ' ' 'f44 -6e APPLICATION NO: l(O- 0 7-1 i Cu Shut t2LJF, t,l) The following is a list of property owners within 300 feet of the subject site. The Development Services Division will notify these individuals of the proposed development. NAME ADDRESS ASSESSOR'S PARCEL NUMBER • • AfAR V rYo �t p�N/v R roN /NG • :.- .r J • TVA.- � 7 (Attach additional sheets, if necessary) •5 0 (Continued) v. NAME ADDRESS ASSESSOR'S PARCEL NUMBER Applicant Certification I, ABDO u L 6 AcuJ , hereby certify that the above list(s) of adjacent property (Print Name) owners and their addresse were obtained from: City of Renton Technical Services Records 0 Title Company Records D King County Assessors Records Signed f Date 3/6/61 r (Applicant) NOTARY' ATTESTED: Subscribed and sworn before me, a Notary Public, in and for the State of Washington, residing at on the day of , 19 Signed (Notary Public) o tv ... i .�:; h ::no Ic o e.. at................e......a..... ..to....::::::::: h..lr e .. t ............. " �' ::;::E'T'.;:.: •:::i .:e,.,'"ncf -:w,:�::.,..:,::f;:.:;�::.,,;m:...,;,,>:::: :..,;ta.. .....ui�...c...... . .d...o....t ......t�..�:.. >;W� _ o.............. :..::...%.. .:.:...:......::•:::::'':iY :' :. :.:. •::' :••:ii:::.i:4'4i:?iitiv'•iY:i' :: '•:::i•::�: 'tii^::•::•i:•::':i::':'• is •i:•i:::'i:::• '::F'•i' ::::�i:•iii�:ti:'4::''::•:: :': f , listprop.doc g REV 07/95 2 t . I ;113%4000010 1134000020 ' ii34000030 • l PILIPS DOROTHY G REYNIERS VERONICA HOLMS WENDELL 1101 SHELTON AVE SE 1013 SHELTON AVE SE 1009 SHELTON AVE SE RENTON WA 98058 RENTON WA 98058 RENTON WA 98058 1 1134000040 1134000050 1134000060 WATSON RICHARD JOHNSON DAVID L NIGRO BERT A 1005 SHELTON AVE SE 1001 SHELTON AVE SE 995 SHELTON AVE SE RENTON WA 98056 RENTON WA 98058 RENTON WA 98055 1134000070 1134000080 2123059006 PACIFIC REAL ESTATE MORTG. WHITLEY LEE CITY OF RENTON 767 NORTH E STREET 969 SHELTON AVE SE CITY HALL 200 MILL AVE S SAN BERNARDINO CA 92403 RENTON WA 98055 RENTON WA 98055 2'123059040 2123059055 2123059068 CITY OF SEATTLE ROYAL HILLS ASSOC B+E FINANCIAL INC SC 486190 0 2810 EASTLAKE AVE E %PATRICK EASTER SEATTLE WA 98102 18000 PACIFIC HWY S SEATTLE WA 98188 2123059070 5126900460 5126900465 CITY OF RENTON SMITH JOHN F BROSSARD REGAN K+PAMELA G 200 MILL AVE S 12216 164 AVE SE 27619 124TH AVE SE RENTON WA 98055 RENTON WA 98059 KENT WA 98031 I 5126900470 5126900475 5126900480 CONDIE DARWIN B JR+RENEE M MANNING CINDY L SCHAFER SCOTT C&RONDA L 3601 SE 6TH ST 3605 SE 6TH ST 3609 SE 6TH ST RENTON WA 98055 RENTON WA 98058 RENTON WA 98055 5126900485 5126900485 5126900490 PORTER JOSEPHINE V LEPLEY YOLANDA HAGADORN GRANT 3613 SE 6TH ST 19826 97TH AVE S 3617 SE 6TH ST RENTON WA 98055 RENTON WA 98055 RENTON WA 98055 5126900495 5126900500 8645530230 ANDERSON ELDON E+JO ANN DEFORREST STEVEN E+ELAINE D THRONSON PAUL T 3701 SE 6TH ST 3705 SE 6TH ST 63 YONHEE-DONG A-2 RENTON WA 98055 RENTON WA 98057 SEODAEMUN-KU I SEOUL 120,KOREA 0 8645530240 .. - 8645530300 8645530310 HIGGINS BRUCE C TRAN SIMON T COLLINS WILLIAM P+JOANNA LE 1401 OLYMPIC AVE SE 1410 NEWPORT CT SE 1403 NEWPORT CT SE RENTON WA - 98058' ; ''' RENTON WA - 98055 RENTON WA 98055 NOTICE OF PROPOSED CONDITIONAL USE/ENVIR..IMENTAL REVIEW APPLICATION RENTON, WASHINGTON A Conditional Use (CU) Permit, Environmental Checklist Review (ECF), Shoreline Substantial Development Permit (SM), and Wetlands (W) Permit Application has been filed and accepted with the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. PROJECT NAME/NUMBER: CEDAR RIVER UTILITY CROSSING/LUA-96-027,CU,ECF,SM,W DESCRIPTION: The applicant (City of Renton Water Utility Department) seeks Environmental Checklist Review (ECF) and Conditional Use (CU) Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition, the applicant must obtain a Shoreline Substantial Development Permit (SM). GENERAL LOCATION: Near the Southwest corner of the Maplewood Golf Course PUBLIC APPROVALS: Environmental Review(ECF) Building Permit Shoreline Substantial Development Permit(SM) Conditional Use Permit (CU) Wetlands Permit (VV) The application can be reviewed in the Development Services Division located on the third floor of Renton City Hall. Comments will be accepted anytime prior to Public Hearings, during Public Hearings, or prior to an administrative site plan approval. For further information on the application, or if you wish to be made a PARTY OF RECORD and receive additional notifications, by mail, of the City's environmental determinations, appeal periods and/or the public hearing date(s) for this project, please contact the Development Services Division at 235-2550. Please include the project NUMBER when calling for proper file identification. ��►' Via e:. . '\ :: /1- �.. .,.1 m* r — !_% E Pam/ ���Ii �ae„� ,� ��r x�,�;`\` =�:/ _ice% t��40- �j/�/ / o,/� , //�TIFFANYPARK .,� : ;:: .V•::. * "%% 1010 /// ////i7J/Nr• ` . j4 / i L ---, ' , t 1'k°y ,PROJECTCORRID•R 14 k.,/,//0////'7/i///// /////4h// //ij`, ai 1 - 0 _ \;T/ / MAPLEWOOD'GOLFCOUR EE /// �%,� j��' i `t //)i,//,,,,/),4/#7,;,,,,/,„7, _�,. Imo% ////i/ /, /fi/(/',/i/r/ /' //;.. , 0 . i'// ////,////7/4E/i///4/„////,/ ,;„ GENMALOT.DOC t' A'tr 1 \i r, ifific:)E PENDING APPLICATION PROJECT NAME/NUMBER: CEDAR RIVER UTILITY CROSSING/.UA-98-02T,CU,ECF,SM,W DESCRIPTION: Tho eppticant(City of Renton Water Utility Department)seeks Environmental Checklist Review(EC and Conditional Use(CU)Permit spprovat to construct an underground crossing of the cedar ever for City foundation.Inraddition,ythe applliicant must obtai utility Shoreline Substantial Development the (SMj Ion of a Fish Welr GENERAL LOCATION: NEAR THE SOUTHWEST CORNER OF THE MAPLEWOOD GOLF COURSE PUBLIC APPROVALS: _Building Permit _Prellminory Plat _Short Plat XXXX Conditional Uso Permit _Rezone Site Plan Approval XXXX Environmental Review Shoreline Conditional Use XXXX Wetlands Pennitr Permit Fill&Grade Permit XXXX Development Peenli Other Development Permit The application can be reviewed In the Development Services Division located on the Third floor of Renton City Hell. Comments will be accepted any limo prior to Public Hearings,during Public Hearings,or prior to en administrative site plan approval.Comments for Substantial Shoreline Permits must be received within thirty(30)days from the last date of applicant's'Notice of Application'publication In the Valley Daily News. For further Information on the application,or it you wish to be made a PARTY OF RECORD and receive additional notifications of the City's environmental determinations,appeal periods andlor the public hearing dates)for this project,please contact the Development Services Division at 235.2550. sir / � r. \_ate, < � ,,, F�r � ' /'� ' \_ z A c ' / : m 7N it ,-iplio -----— ' 00100; %., tin. �i".611 \ r y a o orr- j� � yt: , � ma\ � �0t� ' rs.� � ��t - ^ J° \ �� I a f/i ' RII3 ,. . i / /- A-ro -z.,-.71.-vtA.-,,„.•„,,_p..,,o._:-....----,,,__-_- _ -.-,-,.„--=-V-31' pie,/ ////',/,i,', ,/,,,,/ :‘440;t1 ;1> Z___ft'-.. .-----'--,-•-:-__----- --- -::::.;*41/ 71 1,/j;////'%IA/6/://l':;) �. / MAPLEWOOD/// /,,,COURSE " �0, c �\\ -- ••ems i�4�j /%j',/'r,/ /'%I. ;' ', IPLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION. -":I CERTIFICATION I, A 906UL- L O / , hereby certify that f v GS?copies of the above document werepos e by me in FtVLS� conspicuous places on or nearby the described property on / Signed: \ A oou k2—L aivfO STATE OF WASHINGTON ) ) SS COUNTY OF KING ) ` I certify that I know or have satisfactory evidence that AeDo GAL (1- 0lt l - signed this instrument and acknowledged it to be his/her/their free and voluntary,actt�fg 1lh uses and purposes mentioned in the instrument. �4,,• .'6, Dated: .3 g/ 96 = �1'16 n y Notary P Tic in a f r the State of..Was",tiir9gtALA.(2._ on t Notary rint) ..... My appointment expires: NOTARY.DOC CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: March 8, 1996 TO: Sandy Seeger FROM: Abdoul Gafour(ext. 6210) f W�OIN� SUBJECT: Posting of Notice for Cedar River Utility Crossing LUA-96-027, CU, ECF, SM,W I have personally posted the above notice at the following locations, on March 8, 1996: 1- Power pole located at southwest corner of Maple Valley Highway and SE 7th Street 2- Power pole at northeast corner of 131st Ave SE and SE 148th St. 3- Street light pole on east side of entrance to Maplewood Golf Course on Maple Valley Highway 4- Power pole at end of cul-de-sac on Shelton Court NE 5- Street light pole near bus stop on Royal Hills Drive SE to Royal Hills Apartments. H\abdoul\5 90zone\sepa2 i NOTICE PENDING APPLICATION PROJECT NAME/NUMBER: CEDAR RIVER UTILITY CROSSING/LUA-96-027,CU,ECF,SM,W DESCRIPTION: The applicant(City of Renton Water Utility Department)seeks Environmental Checklist Review(ECF)and Conditional Use(CU)Permit approval to construct an underground crossing of the cedar river for City of Renton, King County, and City of Seattle utility lines. The project will include the construction of a Fish Weir foundation. In addition,the applicant must obtain a Shoreline Substantial Development Permit(SM). GENERAL LOCATION: NEAR THE SOUTHWEST CORNER OF THE MAPLEWOOD GOLF COURSE PUBLIC APPROVALS: Building Permit Preliminary Plat Short Plat XXXX Conditional Use Permit Rezone Site Plan Approval XXXX Environmental Review Shoreline Conditional Use XXXX Wetlands Permitr Permit — Fill&Grade Permit XXXX Shoreline Substantial Other Development Permit The application can be reviewed In the Development Services Division located on the third floor of Renton City Hall. Comments will be accepted any time prior to Public Hearings, during Public Hearings, or prior to an administrative site plan approval. Comments for Substantial Shoreline Permits must be received within thirty(30)days from the last date of applicant's"Notice of Application"publication in the Valley Daily News. For further Information on the application, or if you wish to be made a PARTY OF RECORD and receive additional notifications of the City's environmental determinations, appeal periods and/or the public hearing date(s) for this project, please contact the Development Services Division at 235-2550. *.,• Vir ,..:-..-5V0.0:szgl*wA.**A:•.*w#::?$;;s --__---- ----.----,-_-:&C,;/ .''"„--,=,:,-,>-\T---,'L'-- "-,,,-.;t,/:-.--,-,K,...;_____„; , if' l Q O� •'.i$+:{:\"�`'�.`i,-•�+•:,%;o;:2aS:;'kai;:; ` \.,.:%/// ' /�I2. r'jJ 40 ,i -::---:-_,_.----- ----- tie : ���. - �` •: .fi ...:. ` / /r,a_ 'Qom/ \ - fi. :,‘.-.-,-0•"A• i-k-4--•----1-e-.--t-i-v_-H.*----...1-.---.:-._::-=-„4_z-_,Ar,..-n-;,.j'1"..W,-.1-,1--"-%-i- TIFFANY'PARK \.t� .:•.::..: . `tea i — "14 1 / /i//i llI / / -'•� P - % \41:,•'•'.a r; <3?`:*:::;i:::V:`;`:.i �� 'l�ag /1/'/,/,• /e/ �///,•7//' kfr // --� ,yj�i 3}t ;:r; ar er„... 11,0 ,, ,///J////,/4i//,„//4///i,/,/r///,�/ //� / , Q_ PROJECTCORRIDeR Via/ ;/// /. / /,9 i // // %/ ` - z `, -0''/�'/I MAPLEWOOD:GOLFCOURSE 1 -=,''''''t,- -_ "-- --4::rfr : 4/4/i/hi/ill///VP/7/7///h / I/ice • ` ��� / ///i // / r/'/ �/ ///j/�/ /,//) 0 KeAss..:.INCLUDE T:..H.::.:E.:...PR:.:...:.O::..:JE.:>.CT..:.:NUMBER:WHEN.:.:CALLING::.FO..:.R.:. PROPER FILEl'IDENTIFICATION. CITY OF RENTON MEMORANDUM Date: March 7, 1996 To: Abdoul Gafour/Water Utility Engineer From: ark R. Pywell,AICP/Development Planning Subject: 11 Cedar River Utility Crossing Project No. LUA-96-027,CU,ECF,SM,W The Development Planning Section of the City of Renton has received the above-referenced application for environmental review. I have tentatively scheduled a presentation of the project to the Environmental Review Committee (ERC) on April 2, 1996. You are required to submit an environmental review staff report to me no later than March 26, 1996. At the ERC meeting, you and I will present staff recommendations for the Committee's review and environmental determination. Following the ERC meeting, I will send you copies of the determination along with the timeframes for the public comment and appeal periods for your files. Please contact me at 277-5586 should you require additional information. ACCPTMM.DOC CITY OF RENTON `` DEV OPM NT SERVIC S"DIVISION.:,. MA;STR APPLICATI°ON :::.::: .:...... .. . ..:.:..::.: ...:.. :.::::... .:. Owns -: :..:::..::..... ..:: ;.;:::>;Note::Tf:th'eie::is m oie:than.one legal:owner;please attach anaddit onal:::;;<' notacixedll aster application to each owner..; EXISTING LAND USE(S): NAME: CITY OF RENTON Cedar River,Parks,Trail and vacant PROPOSED LAND USE(S): ADDRESS: 200 MILL AVE.S. Unchanged CITY: Renton ZIP: 98055 EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: TELEPHONE NUMBER: 206-277-6210 Rural Residential&Residential Planned Nbrhd PROPOSED COMPREHENSIVENATION: DE I PLAN MAP S G CO PERSON/APPLIC Same NAME: Abdoul Gafour-Water Utility Engineer EXISTING ZONING: ADDRESS: 200 MILL AVE.S. Resource Conservation and R-24 PROPOSED ZONING: CITY: Renton ZIP: 98055 Same TELEPHONE NUMBER: 206-277-621 O Sl"1'h AREA(SQ.FT.OR ACREAGE): , , longutility 2 I ex2000 About 80 000 s .ft. 0 w d q � corridor) r PROJECT OR DEVELOPMENT NAME: PROJECT VALUE: Cedar River Utility Crossing/Rolling Hills Water 3��P� 1�96 Transmission Pipeline $2,000,000 DEVELOPMENT pLq pV PROPERTY/PROJECT ADDRESS(S)/LOCATION: IS THE SITE LOCATED IN THE A(111PF �yNGAREA? A corridor from SR169 near Maplewood Golf Course Yes,Zone 2 of APA across the Cedar River and up the hill south of the river. IS THE SITE LOCATED IN ANY OTHER TYPE OF ENVIRONMENTALLY SENSITIVE AREA? KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): 212305-9055,212305-9068 212305-9069,212305-9070 Yes, 100 year flood plain, steep slopes, erosion hazard, seismic hazard \\Raphael\sys\DATA\REN\I95-020\PERMITS\MASTER APPLICATION.doc : .LE r. L DESCRIPTION OF PROPERTY Attach se....arate sheetif seeded :: . .: A twenty(20)foot wide strip of land lying within the Northeast Quarter of Section 21,Township 23 North,Range 5 East,W.M.,King County,Washington,and of Government Lots 1 and 4 in said Section 21 lying westerly of the City of Seattle Mercer Island Pipe Line right-of-way and described as follows: Beginning at the intersection of the westerly margin of the City of Seattle Mercer Island Pipe Line right-of-way with the southwesterly margin of the Bonneville Power Administration Maple Valley Loop,thence N 32°04'00"W along said southwesterly margin of the Bonneville Power Administration right-of-way line a distance of 281.49 feet to the True Point of Beginning of the centerline of the twenty foot wide strip of land;thence N 28°25'06"E a distance of 162.95 feet;thence N 17°10'22"E a distance of 348.25 feet;thence N 28°25'19"E a distance of 505.86 feet;thence N 50°55'17"E a distance of 339.90 feet;thence N 28°25'19"E a distance of 630 feet more or less to the southerly right-of-way line of SR-169,Maple Valley Highway and the terminus of the centerline of said twenty foot wide strip of land. P'E C?F APPLTCATIC?N&:FEES ::...::...... ...:.::::...:.:..:g1..... <::;::>- :ea a:::.a . ca. . s At::a . Wa.:O ��Vi4.t:... Vie .:6<'.;>: >::-<i<<' > ::;> ` < <` ` ANNEXATION $ SUBDIVISION REZONE $ _SPECIAL PERMIT $ _LOT LINE ADJUSTMENT $ _TEMPORARY PERMIT $ _SHORT PLAT $ CONDITIONAL USE PERMIT $ _TENTATIVE PLAT $ SITE PLAN APPROVAL $ _PRELIMINARY PLAT $ SPECIAL PERMIT $ _FINAL PLAT $ _GRADE&FILL PERMIT $ (No.Cu.Yds:_ ) _VARIANCE $ PLANNED UNIT DEVELOPMENT $ (from Section: ) _PRELIMINARY _WAIVER $ _FINAL _ROUTINE VEGETATION MANAGEMENT PERMIT $ _BINDING SITE PLAN $ MOBILE HOME PARKS $ SHORELINE REVIEWS: SUBSTANTIAL DEVELOPMENT $ _CONDITIONAL USE $ _VARIANCE $ _EXEMPTION $NO CHARGE _REVISION ENVIRONMENTAL REVIEW $ I,(Print Name) Abdoul Gafour,declare that I am(please check one) _the owner of the property involved in this,application, A_the authorized ' representative to act for the property owner(please attach proof of authorization),and that the foregoing statements and answers herein contained and the information herewith are in all respects true and correct to the best of my knowledge and belief. NOTE,an easement across tax lot 2123059068, owned by B&E Financial,will be obtained by the City prior to commencing construction. Abdoul Gafour-Water Utility Engineer I certify that I know or have satisfactory evidence that Abdoul Gafour signed this (N me of Owner/Re r entative) instrument and acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in the instrument. C. ' /1�rTt-dv • ( gnature of Owner/Representative) Notary Public in and for the St.l ) ashington • A )out_ 6AFouR/ l•—It-DA- G- -f -2IG 6STA-D Notary(Print) 12.49..uLtA) (9 6, <.:::.:.::::::::::. : :.:........... .......: THIS::S>✓CTION:TO,.BECOMPLETEDBYGITY:S .. . :'<;:° : :�>'>`<'" "<::::,:;:_;>x�<��<`:.�,;::,°:,.:';. >;>�:;:>;»:;;<�:::;:>:><;::<<::::<:<;<:>. Cit •le Tp rAlr::k�E >.: .>. . .... ...: .:.::..::::::::..:. .. ...............:.:. ;>:,.,.>..:::.:;.>;::.:::::>:..:> :..TO A,LPOSTA,GB: .RO.V�D�sl�: !$"<;; ; :'`:»:»;;:::::::;::.:, ;:!»i' 5<?>'''3 :'<:<s;:?`°;. \\Raphael\sys\DATA\REN\I95-020\PERMITS\MASTER APPLICATION.doc CITY OF RENTON PLANNINGBUILDING/PUBLIC WORKS MEMORANDUM DATE: March 5, 1996 I ' TO: Laureen Nicolay FROM: Abdoul Gafour(ext. 6210) *tout SUBJECT: Submittal for SEPA, Shoreline Permit & Conditional Use Permit for Cedar River Utility Crossing • Enclosed please find the following submittals for SEPA, Shoreline & Conditional Use Permits for the above project: • 11 copies of Master Application • 11 copies of Environmental Checklist — • 1 set of mailing labels for property within 300 feet of the subject project site • 2 copies of List of Current Property Owners • 11 copies of Project Narrative and Conditional Use Permit Justification — • 11 copies of Neighborhood Detail Map — • 11 copies of Project Plans on 11"x 17"colored reduction • 1 copy of full size Project Plan colored display map —• 5 copies of Geotechnical Report • 5 copies of Wetlands Delineation Survey and Report — • 1 copy of Project Plans reduction on 8-1/2"x 11" _• 1 copy of 4"x 6"'project location map Please let me know if you need additional information to process this application. Thank You. �. " H\water\abdoul\590zone\sepa\ag cc: Mark Pywell s�a .. .... ....: .:..:::::::.: .. ... .:. . ... :..:.::.:..::.. .:.:...:::.:::..:.:: :.. tilfintliggENTORISHORELINEISUBSTANTIALIMENISIk Notice is hereby given that:the CITY OF RENTON has filed an application for a substantial development permit for the construction or development of: The Cedar River Utility crossing. The proposal includes five main underground components. These are: . 1. City of Renton 16 inch water transmission main(about 2000 feet long); 2. King County Water Pollution Control Division sewer siphon replacement(about 900 feet long); 3. City of Seattle future Eastside Supply Line replacement casing(about 150 feet long); 4. One empty 16 inch casing to provide for future utility crossings(about 150 feet long); and 5. Fish Weir foundation installation beneath the Cedar River located at: The project begins at the south side of Maple Valley Highway near the southwest corner of the - - - Maplewood Golf Course (about the 4000 block of the Maple Valley Highway). The proposed water - • and sewer pipe lines will be installed beneath the Cedar River pedestrian and bicycle trail along abandoned railroad right-of-way. Both pipelines will continue up the slope south of the river,with the sewer line connecting to an existing sewer line about 750 feet south of the river and the water line continuing to the top of the slope to the end of SE Royal Hills Drive. within Sections(s)21 of Township 23 N,Range 5E,W.M.,in the City of Renton,King County,Washington. Said development is proposed to be within the Cedar River 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 the City of Renton Development Services Division,Renton Municipal Building,200 Mill Avenue S.,Renton,Washington 98055 in writing of his interest within thirty(30)days of the last publications of this notice. Publication dates of this notice are and 6‘‘VY 0 • Cedar River Utility Crossing City of Renton, King County Water Pollution .4wrro Control Division and Seattle Water Department Project Narrative and Conditional Use Permit Justification accessed using a utility road maintained by the Project Background and Need: Seattle Water Department. K.C.W.P.C.D.funded a replacement of the siphon The City of Renton,King County Water Pollution in 1990 and has been working to replace the River Control Division(K.C.W.P.C.D.),and the City of crossing since that time.K.C.W.P.C.D.designed a Seattle all need to cross the Cedar River with new utility bridge to support a new gravity sewer pipe utility pipelines at river mile 3.1. Both Seattle and in 1992-93,at approximately the same location as K.C.W.P.C.D.have existing pipelines which cross the existing crossing. However,permits to build under the Cedar River at this location. the bridge were not approved. K.C.W.P.C.D.has K.C.W.P.C.D.must increase capacity in its identified the replacement of the Cascade Siphon existing sewer line to eliminate raw sewage as a time critical improvement with construction overflows-into the Cedar River during storms. scheduled for the summer of 1996. The condition Most recently,sewage overflowed into the Cedar of the existing siphon pipe is unknown and may be the early February, 1996 storm. Timing of the " prone to failure. An accelerated replacement crossing for Seattle and Renton is not as critical. schedule will minimize K.C.W.P.C.D.'s liability. An alternatives analysis has identified that open cut trenching across the river is the most feasible, In 1990,the City of Renton identified the same environmentally predictable,and cost effective area of the Cedar River as the site of a required method to install this combined utility crossing. waterline crossing. Renton's proposed waterline ' will convey potable water from the new �01 K.C.W.P.C.D.(then known as METRO)installed a Maplewood wellfield to the Rolling Hills l " 0 12 inch diameter cast iron inverted siphon Talbot Hills areas of the City of Renton. Theo (referred to as the Cascade Siphon)across the pipeline is a critical component of several rr�.pt c/i. Cedar River on the western edge of the Seattle improvements designed to improve water sy4tei Water Department Eastside Transmission Line reliability and redundancy,and reduce operat e right-of-way in 1964. The Cascade Siphon was costs in the City. The pipeline will be 16 inch-2 constructed using coffer-dams and an open trench ductile iron sized and restrained for 250 pounds i excavation through the river. The Cascade Siphon per square inch working pressure and 400 pounds carries wastewater from the Soos Creek Water and per square inch test pressures. The pipe material Sewer District and from a small area of the City of will be restrained joint ductile iron to meet DOH Renton. The line is not sized for current criteria and provide seismic immunity. Renton's wastewater flowrates and frequently surcharges the construction schedule is not critical,and the gravity pipeline upstream of the siphon pipeline could be constructed anytime within the overflowing manholes near the Cedar River. next 3 years. The existing siphon is 12 inch cast iron pipe about K.C.W.P.C.D.and Renton agreed to combine 450 feet long. The line is located within an resources in 1995 to share the cost of the Cedar easement and right of way owned by the Seattle River crossing. Water Department. The line discharges to a 42 inch K.C.W.P.C.D.interceptor in the Maple Valley The Seattle Water Department(SWD)indicated in Highway(SR 169),through a standard manhole early January, 1996,that they may be interested in structure. The upstream pipe is a combination of crossing the Cedar River with a new 56 inch 14 inch concrete and 21 inch concrete with regional potable water pipeline,probably in manholes irregularly spaced along the uphill conjunction with this project. Although the SWD alignment. The upstream terrain is steep and is had not scheduled a replacement of the Eastside P:IDATAIREMI95-0201PERMRSWmjed Narrative and Justilicatioadac 1 of 8 02/29/96 o1ccY o� Cedar River Utility Crossing • City of Renton, King County Water Pollution ��NTo� Control Division and Seattle Water Department Supply Line in the near future,the river crossing new watermain on a pedestrian bridge crossing the section could be accomplished now in conjunction Cedar River. This option was previously pursued with the permits obtained by Renton and and later abandoned when both a SEPA and K.C.W.P.C.D. K.C.W.P.C.D.and Renton have ' substantial Shoreline Development permit were both agreed that Seattle's participation is welcome appealed and rejected based on Renton's codes. as long as the current construction schedule is not Renton's permit requirements prevent the delayed. Including the Seattle Water Department construction of a bridge solely for the purpose of a in the project will require the installation of an utility crossing;which was the configuration of the empty 72 inch casing beneath the Cedar River. previous design. The bridge.was estimated to cost This casing will be used in the future to carry between$800,000 and$1,500,000. Seattle Water Department's replacement Eastside Supply Line. Installing the empty casing now A bridge construction option may still be possible avoids the need to disturb the river bed in the if the existing bridge design is reconfigured to future. I' include pedestrian access to the south bank of the Cedar River("pedestrian bridge").The Renton K.C.W.P.C.D.has agreed to coordinate with SWD Park Department,and Renton Police Department staff,outline the schedule constraints and develop have indicated they do not endorse a pedestrian an administrative agreement for cost sharing. bridge because it provides access to an unpatrolled area of the City.The Department of Fisheries has indicated they do not endorse the pedestrian bridge Alternatives Considered and because it provides access to one of the last Eliminated: pristine spawning areas on the lower Cedar River. Residents in the area have expressed a preference • for an underwater utility crossing to minimize the Three options were investigated to increase sewer aesthetic impacts.Recent flood events on the system capacity out of the basin and to cross the ' Cedar River underscore the vulnerability of a Cedar River.Each option is described below. bridge structure to flood damage.The bridge piers must be out of the floodway and the bridge itself must be well above the reach of the largest trees Option 1 - Kent Interceptor Upgrade and stumps carried by flood water.Bridges are also prone to vandalism and misuse. K.C.W.P.C.D.has previously investigated an upgrade of the interceptor that flows to the west of The bridge option is not preferred by the area Soos Creek Lift Station No.5 with the possibility residents,the Renton Park Department,the Renton of routing all of the pumped sewage to the Kent Police Department or the Department of Fisheries. Valley.Although this would reduce the flows in Since it's construction cost is not less than the the existing siphon,it would not extend the underwater crossing alternatives,it will not be siphon's service life.K.C.W.P.C.D.'s staff has considered further. indicated that the replacement or upgrade of the interceptor that carries pumped flows from Lift Station 5 to the Kent Valley is too expensive and Option 3 -Trenchless iConstruction cannot be completed within the time required.This Methods option will not be given further consideration. Two alternatives construction methods can be used to install the utility pipelines Option 2 - Pedestrian Bridge , 1. an open-cut method using conventional trench construction methods that diverts the river and A second option is to abandon the existing siphon disturbs the riverbed,and under the river and construct a new siphon and F:IDATAVREN\195-020WERMfTS\ProjedNamtive and Justiflcation.dac 2 of 8 02/29/96 Gti�Y ovt> Cedar River Utility Crossing � City of Renton, King County Water Pollution 'NTo Control Division and Seattle Water Department 2. a trenchless construction method that does not • Impact Ramming(see note next paragraph) disturb the riverbed. • Impact Moling The Cascade Siphon was installed by Collucio Construction using coffer-dams and an open trench Two methods were evaluated but do not meet the excavation through the river. project's hydraulic requirements,even if they could be successfully installed under the river: A variety of alternatives were evaluated including • Jet Cutting various tunneling and drilling methods which • would bore under the river. None of the other • Directional Drilling alternatives provide the opportunity to cooperatively incorporate the fish weir foundation One feasible shallow method remains,horizontal and substantial habitat improvements into the thrust boring. This method is especially attractive existing project and all would be substantially because it has low cost,and therefore,only more expensive. moderate risk. If the pipe cannot be advanced in one attempt,the pipe can be withdrawn and Several trenchless construction methods were another alignment attempted without loss or explored during the predesign of the river crossing, damage to expensive equipment. (It should be for use in the shallow gravels below the river.Each noted that impact ramming is similar to the thrust method has certain specific advantages and boring method and may have application in this disadvantages when compared with the site situation.) characteristics. Most trenchless construction methods are not feasible because of three In addition,the micro-tunneling option could be characteristics: used if the bore hole was lowered into the bedrock 1. the substantial groundwater which will be area below the river gravels.Each of these encountered during construction, alternatives may be feasible construction options 2. the large diameter boulders and cobbles below and should be allowable technologies for grade,and construction of the crossing. 3. the construction cost. Proposed Project In a detailed Predesign Report each trenchless construction technology was compared to the Location and Site Description general project requirements and budget. Additionally each technology application in different soil conditions was summarized. Many The project will be conducted at river mile 3.1 on of the drilling methods are not compatible with this the Cedar River,within the City of Renton limits. crossing location and may not be feasible At this location,the Cedar River is approximately alternatives. Horizontal Thrust Boring and Micro- 70 feet wide during low flow(110 cubic feet per tunneling are the most suitable technologies for second)with a mean estimated low flow depth of this project. 1.5 feet. The river bed consists predominantly of cobble or smaller size gravels and sand. The following trenchless construction methods were evaluated and determined to be not feasible The river is bordered on the north by the Cedar due to the expected gravel and cobbles under the River Trail and on the south by undeveloped river: property owned by the City of Renton Parks Department. The south side of the site is relatively • Pipe Jacking flat within 100 feet of the river and then slopes up • Micro-Tunneling sharply to a more level plateau or steppe. A gravel • Auger Boring access road owned and maintained by the Seattle F:IDATAIREN1195.0201PERMr1S\Pmjea Narrative and Judifi®tioadoc 3 of 8 02/29/96 G1cvY o , Cedar River Utility Crossing �� City of Renton, King County Water Pollution Control Division and Seattle Water Department Water Department comes down to the very edge;of monitoring and the emergence of some favored but the river. unfunded fisheries projects may make this option feasible. Sensitive Areas It may be possible to construct the crossing by Three main sensitive areas are within the project carefully choosing the appropriate trench corridor. technology,season,and timing and by either 1. Cedar River Mainstem mitigating the impacts or involving all of the 2. Forested Class 2 riparian floodplain wetland affected basin stakeholders in the construction system,spans approximately 100 feet from the project. Preliminary indications show this to be river edge inland and parallel on the south side the least expensive option. However,it will of the river. involve the most environmental permitting,and 3. Forested Class 2 wetland system and Class 3 negotiation. The Muckleshoot Indian Tribe and stream complex located on the south side of the Department of Fisheries are important the river on a plateau uphill from the riparian stakeholders to involve. Each of these floodplain. stakeholders has been contacted and has expressed tentative interest in investigating the benefits of the open-cut alternative. Project Description At the river crossing,the Cedar River will be diverted into a temporary channel for about one The proposal includes five main underground week while sheet piles are driven and a trench is components. These are: dug between the sheets. Temporary water-filled 1. City of Renton water transmission main; bladders will act as dams to divert the flow 2. King County Water Pollution Control Division (upstream)into a diversion channel. Downstream sewer siphon replacement; the bladder will act as boom to prevent backwater 3. City of Seattle Eastside Supply Line flows into the work area and downstream replacement casing; contamination in the event of an accidental spill. 4. One empty 16 inch casing to provide for Because of this configuration no work in flowing future utility crossings;and water will occur. 5. Fish Weir foundation installation. The river crossing trench will be about eleven feet The Renton water transmission main is 16 inches deep and up to about 30 feet wide. A 30 inch in diameter and about 2100 feet long. The pipeline welded steel casing will be placed in the trench corridor extends from an existing City of Renton (along with other casings described below). This water transmission main located on the south side 30 inch casing will be the conduit for placing the of SR 169 near the western end of the Maplewood 16 inch ductile iron water main under the river. golf course. The water main will be constructed in Manholes for access to this(and the other) a southerly direction under the Cedar River trail casing(s)will be located near the banks,above the and beneath the Cedar River then up the steep 100-year floodplain,at each end of the river hillside on the south side of the river to connect to crossing. The water main will then proceed an existing City of Renton water main located in southerly along an easement that lies west of the Royal Hills Drive. The entire project will be existing City of Seattle water transmission main constructed using open-trench construction right-of-way. The Renton water easement crosses methods. Category 2 Wetlands,a Class'3 Stream and the steep slope on the south side of the Cedar River Open-trench crossing of the river had not been ultimately connecting to the end of Royal Hills considered previously. The environmental impacts Drive. At this point the new water main will be of the open river cut were thought too sensitive to joined to the existing City of Renton water system. pursue.Recent developments in river quality FADATAUREM195-020U'ERMITSWtoject Narrative and 7ustiricatioadoc 4 of 8 02/29/96 G%vy 0 Cedar River Utility Crossing • laR • City of Renton, King County Water Pollution • NTo Control Division and Seattle Water Department The King County Water Pollution Control Division telephone,cable,etc.)without the need to disturb (WPCD)project element includes replacement of the river. the existing 12 inch Cascade Siphon. The siphon replacement project will occur in the same river Pipe sections placed under the riverbed will be crossing as described above. The project involves covered with a protective concrete cap. The construction of a new flow bifurcation structure on concrete cap will be designed to function as a the south side of the river. This new structure foundation for a fish weir. The foundation will be (built underground)will be located about 750 feet used by the Washington Department of Fish and south of the Cedar River adjacent to the existing Wildlife and the Muckleshoot Indian Tribe to aid WPCD sewer line. From this point two parallel in sockeye salmon restoration. ductile iron sewer mains will be constructed in the trench across the river to connect to the existing Due to previous involvement with developing the WPCD 42 inch interceptor in the Maple Valley Cedar River Basin Plan,project staff were aware Highway(SR 169). of the basin management goals and priorities including the need for additional mainstem One of the new sewer lines will be 12 inches and anadromous fish refuge and spawning habitat and the other 16 inches in diameter. These sewer lines the critical need for a reliable sockeye salmon will be placed in two 30 inch welded steel casings brood stock collection system. As such,the to be installed underneath the Cedar River to a new project has been conceptually introduced to several manhole on the north side of the river. The jurisdictions and management authorities to manhole on the north side of the river will be large identify the potential for cooperative efforts. and will act as an access point for all of the casings Coordination with the Washington Department of installed as part of this project. These 30 inch Fisheries and Wildlife,the Muckleshoot Indian casings will be placed in the same trench described Tribe,King County WPCD and Surface Water for the water main crossing.A single sewer line Management,the Cedar River Watershed will emerge from the large access manhole on the Management Council,the City of Renton,and north side of the river and connect to the existing Seattle Water Department has occurred. WPCD 48 inch sewer interceptor located in the Maple Valley Highway. The result is a proposed project which will: • Combine the needs of three needed major The Seattle Water Department portion of the utility projects for the sake of minimizing the project involves placement of an empty 72 inch cumulative environmental impacts on the welded steel casing under the Cedar River in the - Cedar River Basin and saving time and tax same trench as the other utilities. This casing is dollars. being placed in anticipation of the future • Install a critically needed fish weir foundation replacement of the Seattle Water Department into the river at the project site to support the Eastside Supply Line which currently lies parallel sockeye salmon restoration program in the to and directly east of this crossing. The new 72 basin. inch casing will be about 150 feet long and lie • Restore and enhance degraded floodplain parallel to the other casings installed as part of this wetland habitat to function as valuable project. The new manhole(described above)to be anadromous fish refuge and spawning habitat built above the 100-year floodplain near the north while maintaining its hydrologic function.The bank of the river for this project will provide existing natural high flow floodplain channel access to the empty casing. is filled with sand and mud and is overgrown with exotic invasive species.Invasive exotic The fourth component of the project is an empty vegetation will be removed and replaced with 16 inch welded steel casing to be placed in the native species,a groundwater fed pond will be same manner as the Seattle Water Department created,and the channel will be renovated to casing. This empty casing will provide capacity • for future river crossings by other utilities(e.g. P:)DATAREM195-0201PERMITSIPojed Narrative and lu,tifiicatloo.doc 5 of 8 02/29/96 01`�Y 0 • Cedar River Utility Crossing •� City of Renton, King County Water Pollution �NTo Control Division and Seattle Water Department I, serve as flood refuge and spawning habitat for Restoration and Mitigation anadromous salmon,especially sockeye. j The City of Renton Wetlands Management In order to meet the critical sockeye brood stock Ordinance(No.4346),requires that disturbance of collection needs of fisheries authorities and to Class 2 Forested Wetlands and their buffers shall address recurring raw sewage overflow into the be mitigated at a ratio of 3 to each 1 with possible Cedar River,the project needs to be constructed in exceptions granted based upon the merits of the the summer of 1996. Fisheries authorities have project. expressed an urgent need for the weir foundation due to the alarming decline in the sockeye salmon The proposed mitigation and restoration strategy is population in the Cedar and Lake Washington as follows: system. In addition,the raw sewage overflow has potentially hazardous impacts on the river,Lake Washington,fish,recreation and the City of Class 3 stream Renton water supply. The Class 3 stream on the south side of the site is Over the last several years,a major effort has been currently in a culvert under the existing gravel progressing through cooperation between various access road. The exiting culvert will be extended jurisdictions and basin stakeholders including King by approximately 20 feet to allow for placement of County(SWM and Metro),the Washington road fill materials. Any areas of stream Department of Fisheries and Wildlife,Seattle disturbance will be restored to the original Water Department,the Washington Department of condition. Working in or near the stream will be Transportation,the Washington Department of avoided to the maximum degree possible. Ecology,the U.S.Army Corps of Engineers,the City of Renton,the Boeing Company and others to Plateau and Floodplain Class 2 Forested develop a management plan for the Cedar River Wetlands _Basin. There are many projects identified in the management plan to address fish habitat,flooding; It is anticipated that the project will cause minor and water quality. Also,since populations of I impacts to the plateau wetland system. Work in or several salmonid species have been experiencing around the wetland will be minimized as possible. dramatic declines in this basin,agencies and Indian Approximately.16 acres of this wetland system Tribes have identified additional projects to will be disturbed adjacent to the existing gravel support restoration of these populations. There is, filled access road. This will be needed for however,a shortage of funding to implement many machinery access and new pipeline placement. critical projects. Any fill will be removed when construction is completed. Some preliminary work has been completed to identify the viability of the open cut option.The Moderate impacts will occur in the floodplain preliminary work involved discussions with a wetland system due to machinery access and variety of jurisdictions including the Washington activity. An estimated that.35 acres of this Department of Fisheries and Wildlife,the wetland system will be temporarily impacted by Muckleshoot Indian Tribe,the City of Renton,and gravel stabilization and machinery activity. King County.Verbal communications indicate a willingness to explore the benefits of the open-cut Mitigation for these impacts will include removing method and the possibility of including other some of the invasive-exotic plant species which are beneficial river projects in the restoration phase of infesting these wetlands and replanting with native the construction.Additional design detail must be vegetation,creating a open water groundwater fed provided to each agency prior to final pond,and modifying the existing degraded endorsement. floodplain overflow channel to maintain year FADATA REN1195.020tPERMITSiProjed Nanalive and Justification.doc 6 of 8 02/29/96 I I • & 0 Cedar River Utility Crossing IR • • City of Renton, King County Water Pollution �NTo Control Division and Seattle Water Department round groundwater flow and support sockeye • Objective EN-C salmon spawning and high flow refuge. • Objective EN-D • Objective EN-E Mainstem Cedar • Objective EN-K The project is anticipated to involve spanning the . The preceding paragraphs describing the project, entire river width with a trench 30 feet wide and 11 its features,benefits,restoration and mitigation feet below the current channel bed surface. The elements document how this project meets these channel width at this location is approximately 70 objectives. feet during low flow. The trench will extend into the river fringes approximately 10 feet on either In addition to meeting these numerous side. Pipes will be placed in the trench and Comprehensive Plan Objectives,the proposed encased in concrete. The concrete will function as project also complies with many adopted pipe protection and the foundation for the fish Comprehensive Plan Policies,including; weir. • Policy U-1 The final below bed structure will be 30 feet wide, • Policy U-2 8 feet thick,and 3 feet below the surface of the • Policy U-5 channel bed. The upstream end of the structure • Policy U-7 will have a concrete lip which protrudes above the • Policy U-8 bed approximately 0.5 feet and will be 1-2 feet • Policy U-9 wide. This lip will function as the attachment site • Policy U-13 for the fish weir. • Policy U-17 Impacts on the river will be mitigated by restoring • Policy U-18 the trenched and working area to mimic the • Policy U-33 original conditions and by creation,of the sockeye • Policy U-36 spawning pond and channel discussed previously. • Policy U-42 • Policy U-55 • Policy U-58 Conditional Use Justification • Policy U-59 • Policy U-61 The following paragraphs outline how this • Policy U-63 proposed project conforms to City of Renton • Policy EN-5 • Conditional Use Permit Criteria. • Policy EN-8 • Policy EN-9 • Policy EN-10 Comprehensive Plan • Policy EN-13 • Policy EN-18 The proposed project conforms to many objectives • Policy EN-19 • PolicyEN-52 and policies in the 1995 City of Renton Comprehensive Plan. Objectives that this project • Policy EN-54 meets include: • Policy EN-70 • Policy EN-74 • Objective U-A • Policy EN-76 • Objective U-B • Objective U-C • The preceding paragraphs describing the project, • Objective U-D its features,benefits,restoration and mitigation FADATAVtEN119S0201PERMnSIPmjedNarndy°and instifiration.dac 7 of 8 02/29/96 otirl 0 Cedar River Utility Crossing • ift City of Renton, King County Water Pollution -lvvro Control Division and Seattle Water Department elements document how this project meets these water supply to city residents. Third,providing policies. empty casings for future utility crossings by the City of Seattle and other utilities is needed to avoid future disruptions of the river corridor. Community Need The community need for this project is self-evident Effect on Adjacent Properties and multi-faceted. First,it is necessary to replace the Cascade Siphon to protect health and safety by The project will have minimal short effects on eliminating wastewater overflows into the Cedar: nearby properties. In the long-term construction of River. Second,as documented here and in the City the project will benefit nearby properties by of Renton Water System Plan a new transmission improving water quality as well as water and sewer line is needed to provide adequate and reliable service. • � I P:IDATAIREN1195-0201PERMfS1ProJed Narrallve and lustification.doc 8 of 8 02/29/96 ( YO ENVIRONMENTAL CHECKLIST A. BACKGROUND 1. Name of proposed project,if applicable: Cedar River Joint Use Utility Crossing including: a) City of Renton Rolling Hills 16"Water Transmission Pipeline b) King County Water Pollution Control Division(METRO)Cascade Siphon Replacement, and c) City of Seattle Water Department Mercer Island Supply Line Replacement Casing d) Muckleshoot Indian Tribe & Washington Department of Fish and Wildlife Fish Weir Foundation 2. Name of applicant: City of Renton Planning/Building/Public Works Dept. 3. Address and phone number of applicant and contact person: Abdoul Gafour- • Water Utility Engineer- • City of Renton- 200 Mill Ave. S., Renton,WA 98055 277-6210 4. Date checklist prepared: February 29, 1996 5. Agency requesting checklist: City of Renton 6. Proposed timing or schedule(including phasing,if applicable): Summer of 1996 to Fall 1996 7. Do you have any plans for future additions, expansions, or further activity related to or connected with this proposal? If yes,explain. Yes, both the empty Seattle Water Department casing and the empty general utility casing will be used in the future to cross the Cedar River. 8. List any environmental information you know about that has been prepared, or will be prepared,directly related to this proposal. • Cooke Scientific Services completed a wetland delineation and classification report in February, 1996. • Geotechnical reports for the project alignment have been prepared. The most recent report was prepared by Golder Associates in November, 1995. 02/29/96 1 of 16 \\RaphaeKsys\DATA\REN\195-020\PERMITSISEPA_CK.DOC 01`VY o'et) Cedar River Utility Crossing A CM City of Renton, King County Water Pollution Control Division and Seattle Water Department • Cedar River Basin Plan • Construction restoration plans are being developed in cooperation with affected agencies for the crossing of Cedar River, the steep slope and the wetlands and will be implemented consistent with Renton Municipal Code requirements.. 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. None known. 10. List any governmental approvals or permits that will be needed for your proposal,if known. • Department of Ecology Temporary Water Quality Modification Permit (Section 401) for discharge into the Cedar River. • Hydraulic Permit Approval(HPA)from the Department of Fisheries and Wildlife. • Approval from the Department of Health(DOH)for the design of the water line. • Approval from the Department of Ecology(DOE)for the design of the sewer line. • Nationwide and-or Section 404 Permit from the U.S.Army Corps of Engineers 1 • Washington Department of Natural Resources permit to cross State-Owned Aquatic Lands and Forest Practices Permit. • King County Industrial Waste Discharge Permit. • City of Renton Shoreline Substantial Development Permit, Construction (including Grade and Fill) Permit, and Conditional Use Permit, as well as floodplain and wetland review and approval. • Right-of-Way permit from the Seattle Water Department • Right-of-way franchise for work within SR-169 from Washington State Department of Transportation 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. The proposal includes five main underground components. These are: 1. City of Renton water transmission main; 2. King County Water Pollution Control Division sewer siphon replacement; 3. City of Seattle Eastside Supply Line replacement casing; 4. One empty 16 inch casing to provide for future utility crossings;and 5. Fish Weir foundation installation The Renton water transmission main is 16 inches in diameter and about 2100 feet long. The pipeline corridor extends from an existing City of Renton water transmission main located on the south side of SR 169 near the western end of the Maplewood golf course. The water main will be constructed in a southerly direction under the Cedar River trail and beneath the Cedar River then up the steep hillside on the south side of the river to connect to an existing City of Renton water main 02/29/96 2 of 16 \\RaphaeRsys\DATA\REMI95-020\PERMITS\SEPA_CK.DOC oS- � Cedar River Utility Crossing City of Renton, King County Water Pollution Control Division and Seattle Water Department located in Royal Hills Drive. The entire project will be constructed using open-trench construction methods. At the river crossing, the Cedar River will be diverted into a temporary channel for about one week while sheet piles are driven and a trench is dug between the sheets. Temporary water-filled bladders will act as dams to divert the flow (upstream) into a diversion channel. Downstream the bladder will act as boom to prevent backwater flows into the work area and downstream contamination in the event of an accidental spill. Because of this configuration no work in flowing water will occur. The river crossing trench will be about eleven feet deep and up to about 30 feet wide. A 30 inch welded steel casing will be placed in the trench (along with other casings described below). This 30 inch casing will be the conduit for placing the 16 inch ductile iron water main under the river. Manholes for access to this (and the other) casing(s) will be located near the banks, above the 100-year floodplain, at each end of the river crossing. The water main will then proceed southerly along an easement that lies west of the existing City of Seattle water transmission main right-of-way. The Renton water easement crosses Category 2 Wetlands, a Class 3 Stream and the steep slope on the south side of the Cedar River ultimately connecting to the end of Royal Hills Drive. At this point the new water main will be joined to the existing City of Renton water system. The King County Water Pollution Control Division (WPCD) project element includes replacement of the existing 12 inch Cascade Siphon. The siphon replacement project will occur in the same river crossing as described above. The project involves construction of a new flow bifurcation structure on the south side of the river. This new structure(built underground)will be located about 750 feet south of the Cedar River adjacent to the existing WPCD sewer line. From this point two parallel ductile iron sewer mains will be constructed in the trench across the river to connect to the existing WPCD 42 inch interceptor in the Maple Valley Highway(SR 169). One of the new sewer lines will be 12 inches and the other 16 inches in diameter. These sewer lines will be placed in two 30 inch welded steel casings to be installed underneath the Cedar River to a new manhole on the north side of the river. The manhole on the north side of the river will be large and will act as an - access point for all of the casings installed as part of this project. These 30 inch casings will be placed in the same trench described for the water main crossing. A single sewer line will emerge from the large access manhole on the north side of the river and connect to the existing WPCD 48 inch sewer interceptor located in the Maple Valley Highway. The Seattle Water Department portion of the project involves placement of an empty 72 inch welded steel casing under the Cedar River in the same trench as the other utilities. This casing is being placed in anticipation of the future replacement of the City of Seattle Water Department Eastside Supply Line which currently lies parallel to and directly east of this crossing. The new 72 inch casing will be about 150 feet long and lie parallel to the other casings installed as part of this project. The new manhole (described above) to be built above the 100-year floodplain near the north bank of the river for this project will provide access to the empty casing. The fourth component of the project is an empty 16 inch welded steel casing to be placed in the same manner as the Seattle Water Department casing. This empty casing will provide capacity for future river crossings by other utilities (e.g. telephone, cable, etc.) without the need to disturb the river. 02/29/96 3 of 16 ARaphael\sys\DATA\ EMl95-020\PERMITS\SEPA_CK.DOC Gti�Y o' Cedar River Utility Crossing • © City of Renton, King County Water Pollution . o� Control Division and Seattle Water Department Pipe sections placed under the riverbed will be covered with a protective concrete cap. The concrete cap will be designed to function as a foundation for a fish weir. The foundation will be used by the Washington Department of Fish and Wildlife and the Muckleshoot Indian Tribe to aid in sockeye salmon restoration. 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. The project is located in Section 21, Township 23 North, Range 5 East, W.M., King County, Washington. See attached vicinity map. The project begins at the south side of Maple Valley Highway near the southwest corner of the Maplewood Golf Course(about the 4000 block of the Maple Valley Highway). The proposed water and sewer pipe lines will be installed beneath the Cedar River pedestrian and bicycle trail along abandoned railroad right-of-way. Both pipelines will continue up the slope south of the river, with the sewer line connecting to an existing sewer line about 750 feet south of the river and the water line continuing to the top of the slope to the end of SE Royal Hills Drive. B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site(circle one); flat,rolling,hilly,steep,slopes,mountainous, other The terrain for the project is highly variable from existing flat paved trail,to crossing the Cedar River and up the gentle and steep slope along the south bank of the river. b. What is the steepest slope on the site(approximate percent slope?) 65% steepest slope,the average slope is 15%. c. What general types of soils are found on the site(for example,scaly,sand,gravel,peat, muck)? If you know the classification of agricultural soils,specify them and note any prime farmland. Sandy loam developed on glacial drift and recent Cedar River alluvium and fill. 02/29/96 4 of 16 1V2aphael\sys\DATAWEN\19S020WPERMI'IS'SEPA_CK.DOC I _ 01`tY o Cedar River Utility Crossing City of Renton, King County Water Pollution .n,.ro Control Division and Seattle Water Department d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. Shallow arcuate slope failures (10 feet or less in diameter)exist along the steep portions of the project corridor. e. Describe the purpose,type,and approximate quantities of any filling or grading proposed. Indicate source of fill. The project involves excavation of about 8800 cubic yards of material for the utility trenches, bifurcation structure and manholes. Material excavated for the structures and manholes will be hauled off-site and disposed of at an approved site. Material excavated from the open trench crossing of the Cedar River will be stockpiled and placed back in the river. It is anticipated that there will excess materials remaining from the river crossing excavation. These should be composed of sands,silts,gravel and cobbles. Most of the excess cobbles and- gravel will be used to enhance fish habitat in the riparian floodplain. Any remaining excess material may be hauled off and disposed of at an approved site or used as fill over the top of the Renton waterline. It is possible,but unlikely,that the materials from the river crossing excavation may be suitable for use as pipe-bedding for the water and sewer lines south of the river. If that is the case some of the excavated river bottom material will be used in this manner. If it is not the case,then suitable bedding materials will be hauled in to be placed in the utility trenches for the WPCD siphon and the City of Renton water line. Precise quantities of this bedding materials cannot be determined until material excavated has been evaluated. However,it is possible that up to 2,000 cubic yards of bedding material may be imported and placed in the trenches. f. Could erosion occur as a result of clearing,construction,or use? If so,generally describe. Yes,two types of erosion may be associated with this project. First,the open trench crossing of the Cedar River will temporarily disturb sediments in the river and increase turbidity in the river. This increased turbidity will exist for most or all of the time the river crossing is underway(about one week). During construction of the Renton Water line and the WPCD division sewer line erosion could occur if it rained. However,the construction window required for the river crossing is the period when it is statistically least likely to rain in this area. Construction of the total project will take about 3 months during which rain is likely to occur. g. About what percent of the site will be covered with impervious surfaces after project construction(for example,asphalt or buildings)? None. The construction area will be restored consistent with Renton Municipal Code requirements to mimic existing conditions. 02/29/96 5 of 16 11Raphaellsys\DATAWEN1195-0201PERMYIS\SEPA_CK.DOC 01`SY o� Cedar River Utility Crossing • City of Renton, King County Water Pollution Control Division and Seattle Water Department h. Proposed measures to reduce or control erosion,or other impacts to the earth,if any: Erosion control matting, sedimentation fencing and culverting for construction along the steep slope and through wetlands. A construction restoration plan consistent with the Requirements of Renton Municipal Code will be coordinated with other permitting agencies such as the Departments of Fish and Wildlife,Ecology,Muckleshoot Tribe and the US Army Corps of Engineers • 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. Construction equipment exhaust and dust from excavation activities. Odors may emanate from the new sewer siphon. However,these odors will be less than those experienced currently- because of the elimination of sewage overflows. 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: None. 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. This project will include the crossing of the Cedar River and an unnamed Class 3 stream on the south side of the river. The Class 3 stream infiltrates in a wetland with no surface connection to the Cedar River. Associated with this area are three wetland systems. Along the river itself is a."floodplain"Category wetland located in the riparian zone. This wetland is wet during high stages of the Cedar River. About.4 acres of this wetland will be temporarily disturbed during construction. Upland and associated with the unnamed Class 3 tributary are two other Category 2 wetlands. About.2 acres of these wetlands will be temporarily disturbed during construction. These wetlands formerly were connected but were bisected when the City of Seattle constructed their water main access road. The unnamed tributary discharges into the lowest of these Category 2 wetlands. Surface flows from this area do not occur. Discharge of the stream flows are via groundwater seepage along the toe of the slope and in the floodplain. 02129/96 6 of 16 \\Raphael\sys\DATA\REN\195-020\PERMITS\SEPA_CK.DOC • 1 ' ofVY 0 Cedar River Utility Crossing . City of Renton, King County Water Pollution Control Division and Seattle Water Department 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.This project will install utility pipelines beneath the bed of the Cedar River and beneath the riparian corridor on both sides of the Cedar River. 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 net fill will occur. However,in order to cross the river about 600 cubic yards of river bottom will be excavated to create a trench to lay the utility casings in. This native material will be stockpiled near the riverbank and replaced in the trench after the utility casings have been placed. Excess river bottom materials will be used for floodplain habitat enhancement or for pipe bedding or cover materials(see Section B.1.e.,above). 4) Will the proposal require surface water withdrawals or diversions? Give general description,purpose,and approximate quantities if known. The flow of the Cedar River will be temporarily diverted during the river crossing. This diversion will last about one week. The diversion will use an existing floodway channel along the south bank. The diversion channel will be created by modifying the existing floodway channel to create a new channel about fifteen feet wide and about three to four feet deep. The channel will be lined and stabilized with geotextile fabric held down by two-man rocks. The diversion channel will be designed to handle the estimated flow of the Cedar River(about 125 cubic feet per second)with a velocity of less than six feet per second. The unnamed Class 3 tributary stream will also be diverted during construction of the Renton Water line. It is anticipated that due to the small size of this stream(if it is flowing at all during the construction period),the stream may be temporarily piped around the construction area while the water main is installed. However, since this stream is also the source of water for parts of the wetland system,other diversion approaches may be used to minimize wetland impacts. 5) Does the proposal lie within a 100-year floodplain? If so,note location on the site plan. Yes. 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 waste materials will be discharged to surface waters. All unsuitable materials will be removed from the site and disposed in approved sites. 02/29/96 7 of 16 \\Raphae6sys\DATA\REM195-020\PERMITS\SEPA_CK.DOC Cedar River Utility Crossing City of Renton, King County Water Pollution �N.ro Control Division and Seattle Water Department b. Ground: 1) Will ground water be withdrawn,or will water be discharged to ground water? Give general description,purpose,and approximate quantities if known. Yes. Dewatering of the trench excavation area between the sheetpiles will occur during the installation of the pipeline casings. If this water is turbid it will discharged into the existing WPCD sewer line, a biofiltration swale,and/or sedimentation ponds. If the water is not turbid it will be discharged to the surface water system. 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 unnamed tributary and from the wetlands to be crossed by this project will be diverted and treated consistent with the restoration plan developed and approved as part of this project(See section B.l.h., above). Surface water runoff adjacent to the trench excavation areas will be diverted to a sedimentation pond or channel and infiltrated. Erosion control measures (i.e.: silt fences,sedimentation ponds,culverts)will be used to maximize capture of sediment and minimize erosion. 2) Could waste material enter ground or surface waters? If so,generally describe. It is possible that accidental spills of fuels or other materials could occur and enter the river or groundwater. d. Proposed measures to reduce or control surface,ground,and runoff water impacts,if any: Erosion control measures will be used such as sedimentation structures, silt fences,culverts. Siting and control of refueling will be done in a manner to minimize the possibility of accidental spills. A spill prevention and cleanup plan will be in place prior to commencing construction. No equipment will operate in flowing water. The downstream diversion dam will also act as a downstream boom to collect any accidental spills. 02/29/96 8 of 16 \\Raphael\sys\DATA\REN\195-020\PERMt1S\SEPA_CK.DOC 0ti(vY o Cedar River Utility Crossing �=R City of Renton, King County Water Pollution Control Division and Seattle Water Department 4. Plants a. Check or circle types of vegetation found on the site: X deciduous tree: alder,maple,aspen,other X_evergreen tree: fir,cedar,pine,other X shrubs X_grass crop or grain X_wet soil plants: cattail,buttercup,bulrush,skunk cabbage,other water plants: water lily,eel grass,milfoil,other other types of vegetation b. What kind and amount of vegetation will be removed or altered? All vegetation along the construction corridor will be removed. About 30,000 square feet of area on the south side of the river will also be cleared and disturbed for use as a construction staging area. All disturbed areas will be revegetated according to restoration plan developed consistent with the requirements of Renton Municipal Code and approved by permitting agencies. For those areas disturbed that are classified as wetlands,vegetative,fish habitat elements and other enhancement will be installed. c. List threatened or endangered species known to be on or near the site. None known. d. Proposed landscaping,use of native plants,or other measure to preserve or enhance vegetation on the site,if any: Disturbed areas will be revegetated using native materials according to the approved restoration plan. 5. Animals a. Circle any birds and animals which have been observed on or near the site or are know to be on or near the site: Birds. i awk heron,eagle,songbirds a ther Mammals.tt,K•.- • , , I • .ver,other _raccoons,opossum Fish: bass,1/4a mon,trou1yherring,shellfish,other b. List any threatened or endangered species known to be on or near the site. None known. The Cedar River Sockeye Salmon are considered a"depressed"species. 02/29/96 ' 9 of 16 \\Raphae9sys\DATA\REM195-020\PERMITS\SEPA_CK.DOC U1`SY 0 Cedar River Utility Crossing City of Renton, King County Water Pollution ,r,.ro Control Division and Seattle Water Department c. Is the site part of a migration route? If so,explain The Cedar River is a migration route for Sockeye,Steelhead and other species of salmonids. The entire region is part of the Pacific Flyway for migratory birds. d. Proposed measures to preserve or enhance wildlife,if any: Impacts resident fish during the river crossing will be minimized by several features. First,the bypass channel will be designed to allow passage and minimize turbidity. Second,by using the open-trench crossing method,actual construction time in the river will be minimized. Third,the temporary bypass channel will be modified into a groundwater-fed pond and channel after construction is completed. Fourth,the concrete cap that will be placed over the river crossing will be designed to function as a fish weir foundation. This will allow trapping of sockeye and other fish for the purpose of gathering eggs and sperm as part of the efforts to restore fish stocks in the river. In addition,the floodplain wetland vegetation will be enhanced with native species and exotic invasive species will be removed. 6. Energy and Natural Resources a. What kinds of energy(electric,natural gas,wood,wood stove,solar)will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing,etc. No energy will be consumed to operate the completed sewer project. Electrical energy will be required to pump water through the new Renton water pipe from the existing booster pump station on the Maplewood Golf Course. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. 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: The use of a gravity siphon eliminates the need to build a large,energy intensive pump station for collecting sewage. 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. When the old WPCD sewer line is diverted to the new siphon system accidental minor spills of raw sewage could occur. Containment of wastewater during the switch over will minimize the possibility of this occuring. 0229/96 10 of 16 \\Raphael\sys\DATA\REN\195-020\PERMIIS\SEPA_CK.DOC OtiCY 0 Cedar River Utility Crossing + a © City of Renton, King County Water Pollution o� Control Division and Seattle Water Department 1) Describe special emergency services that might be required. No special emergency services will be required. 2) Proposed measures to reduce or control environmental health hazards,if any: The new sewer system itself is designed to reduce the risk of raw sewage overflows causing environmental health hazards. b. Noise 1) What types of noise exist in the areas which may affect your project(for example: traffic, equipment,operation,other)? Truck traffic noise along Maple Valley Highway is considerable. 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis(for example: traffic,construction,operation,other)? Indicate what hours noise would come from the site. Noise from construction equipment.7:00 AM to 5:00 PM for most of the project duration. However,in order to minimize the duration of river disturbance,excavation through the river may proceed 24 hours per day. 24 hour construction would be subject to approval by the Renton City Council of a variance from City noise standards. Installation of the sheet piles for the river crossing will be noisy and also vibrate the earth in the construction zone. 3) Proposed measures to reduce or control noise impacts,if any: Compliance with City noise regulations. 8. Land and shoreline Use a. What is the current use of the site and adjacent properties? Uses along the project corridor proceeds from north to south as a highway,a river trail, undeveloped park lands and into a multi-family residential area. b. Has the site been used for agriculture? If so,describe. No. c. Describe any structures on the site. Sewer manholes and pipelines,and the Seattle Water Department 36 inch waterline. d. Will any structures be demolished? If so,what? No. Three sewer manholes will be abandoned. 02/29/96 11 of 16 URaphael\sys\DATAIREM195-0201PERMfTS\SEPA CK.DOC o1(vi o� Cedar River Utility Crossing © City of Renton, King County Water Pollution Control Division and Seattle Water Department e. What is the current zoning classification of the site? The lower portion of the project is zoned Resource Conservation and the upper portion zoned R-24(24 units/acre) f. What is the current comprehensive plan designation of the site? Most of the corridor is designated as"Rural Residential". The southern most end of the project is designated as"Residential Planned Neighborhood".. g. If applicable,what is the current shoreline master program designation of the site? The portion of the Cedar River is designated"Conservancy"by the Master Program. h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. Yes,the Cedar River riparian corridor,floodway and floodplain,Category 2 wetlands,the Class 3 stream and the steep slopes on the south side of the river are considered sensitive areas. 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: None. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans,if any: Conformance with City Comprehensive Plans,policies and.regulations. 9. Housing a. Approximately how many units would be provided,if any? Indicate whether high, middle,or low-income housing. None. 02/29/96 12 of 16 \\RaphaeAsys\DATAIREN\195-020\PERMI S/SEPA_CK.DOC - oC�Y � Cedar River Utility Crossing City of Renton, King County Water Pollution r,.ro Control Division and Seattle Water Department 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 project will be located underground. b. What views in the immediate vicinity would be altered or obstructed? None. c. Proposed measures to reduce or control aesthetic impacts,if any: None. 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. b. Could light or glare from the finished project be a safety hazard or interfere with views? Not applicable. c. What existing off-site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts,if any: None. 02/29/96 13 of 16 \\Etaphael\sys\DATA\REM195-020WERMIIS\SEPA_CK.DOC Gf 0.6\ Cedar River Utility Crossing • © • City of Renton, King County Water Pollution ,nfro Control Division and Seattle Water Department 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity?. North of the river and SR 169 lies,the Maplewood Golf Course. The Cedar River Trail is located between the Cedar River and SR 169 at the north end of the project. The Cedar River provides extensive opportunities for informal recreational activities(swimming,canoeing and floating)and fishing. On the south side of the river the City owns significant undeveloped parkland. b. Would the proposed project displace any existing recreational uses? If so,describe. Use of the Cedar River and the associated trail will be disrupted during construction. c. Proposed measures to reduce or control impacts on recreation,including recreation opportunities to be provided by the project or applicant,if any: Signs and warnings will be posted at the bridge over the Cedar River at the Maplewood Golf Course and at other locations between the bridge and the construction site. "Take-out"areas for floaters will be identified. 13. Historic and Cultural Preservation a. Are there any places or objects listed on,or proposed for,national state,or local preservation registers known to be on or next to the site? If so,generally describe. None known. b. Generally describe any landmarks or evidence of historic,archaeological,scientific,or cultural importance known to be on or next to the site. None known. However,aiding the restoration of sockeye salmon is important to maintaining the culture of the Muckleshoot Indian Tribe. c. Proposed measures to reduce or control impacts,if any: If discovered,artifacts or historic features will handled according to the recommendations of the appropriate agencies. 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. Maple Valley Highway(SR 169), SE Royal Hills Drive 02/29/96 14 of 16 \\RaphaeRsys\DATA\REN1195-0201PERMITS\SEPA_CK.DOC G~�Y o•et' Cedar River Utility Crossing + City of Renton, King County Water Pollution 'NTo Control Division and Seattle Water Department b. Is site currently served by public transit? If not,what is the approximate distance to the nearest transit stop? • Bus service is available along the Maple Valley Highway. c. How many parking spaces would the completed project have? How many would the project eliminate? None. 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? Temporary access roads for construction on the south side of the river will be required. e. Will the project use(or occur in the immediate vicinity of) water,rail,or air transportation? If so,generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known,indicate when peak volumes would occur. None. Periodically,the bifurcation structure will be inspected by King County WPCD personnel. g. Proposed measures to reduce or control transportation impacts,if any: None. 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. b. Proposed measures to reduce or control direct impacts on public services,if any. None. 16. Utilities a. Circle utilities currently available at the site: - ectricity,natural gas,water,refuse service, telephone, sanitary sewer, septic system, other. 02/29/96 15 of 16 \VLaphaeRsys DATA\REN1195-020\PERM1 S\SEPA_CK.DOC o.�Y o� Cedar River Utility Crossing Kin Count Water Pollution ,� �� City of Renton, g y ,,ivTo Control Division and Seattle Water Department 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. The project is construction of a City of Renton water transmission pipeline and King County WPCD sanitary sewer siphon line. C. SIGNATURE I, the undersigned, state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw any declaration of non-significance that it might issue in reliance upon this checklist should there be any willful misrepresentation or willful lack of full disclosure on my part. Proponent: Name Printed: Abdoul Gafour 02/29/96 16 of 16 1U2aphaeAsyskDATAVREN095-020\PERM1 S\SEPA_CK.DOC Os-(cY Cedar River Utility Crossing 4. City of Renton, King County Water Pollution .er.4• o� Control Division and Seattle Water Department e. What is the current zoning classification of the site? The lower portion of the project is zoned Resource Conservation and the upper portion zoned R-24(24 units/acre) f. What is the current comprehensive plan designation of the site? Most of the corridor is designated as"Rural Residential". The southern most end of the project is designated as"Residential Planned Neighborhood".. g. If applicable,what is the current shoreline master program designation of the site? The portion of the Cedar River is designated"Conservancy"by the Master Program. h. Has any part of the site been classified as an"environmentally sensitive" area? If so, specify. Yes,the Cedar River riparian corridor,floodway and floodplain,Category 2 wetlands,the Class 3 stream and the steep slopes on the south side of the river are considered sensitive areas. 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: None. 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans,if any: Conformance with City Comprehensive Plans,policies and regulations. 9. Housing a. Approximately how many units would be provided,if any? Indicate whether high, middle,or low-income housing. None. 02/29/96 12 of 16 \\Raphael/.sys\DATAIREN\195-020\PERMITS\SFPA_CK.DOC • a o,6\ Cedar River Utility Crossing + + City of Renton, King County Water Pollution •moo Control Division and Seattle Water Department 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 project will be located underground. b. What views in the immediate vicinity would be altered or obstructed? None. c. Proposed measures to reduce or control aesthetic impacts,if any: None. 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. b. Could light or glare from the finished project be a safety hazard or interfere with views? Not applicable. c. What existing off-site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts,if any: None. 02/29/96, 13 of 16 \\RaphaeRsys\DATA\REN\195-0201PERMfIS\SEPA_CK.DOC .) 4 Cedar River Utility Crossing • " © 4. City of Renton, King County Water Pollution � Control Division and Seattle Water Department 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? North of the river and SR 169 lies the Maplewood Golf Course. The Cedar River Trail is located between the Cedar River and SR 169 at the north end of the project. The Cedar River provides extensive opportunities for informal recreational activities(swimming,canoeing and floating)and fishing. On the south side of the river the City owns significant undeveloped parkland. b. Would the proposed project displace any existing recreational uses? If so,describe. Use of the Cedar River and the associated trail will be disrupted during construction. c. Proposed measures to reduce or control impacts on recreation,including recreation opportunities to be provided by the project or applicant,if any: Signs and warnings will be posted at the bridge over the Cedar River at the Maplewood Golf Course and at other locations between the bridge and the construction site. "Take-out"areas for floaters will be identified. 13. Historic and Cultural Preservation a. Are there any places or objects listed on,or proposed for,national state,or local preservation registers known to be on or next to the site? If so,generally describe. None known. b. Generally describe any landmarks or evidence of historic,archaeological,scientific,or cultural importance known to be on or next to the site. None known. However,aiding the restoration of sockeye salmon is important to maintaining the culture of the Muckleshoot Indian Tribe. c. Proposed measures to,reduce or control impacts,if any: If discovered,artifacts or historic features will handled according to the recommendations of the appropriate agencies. 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. Maple Valley Highway(SR 169), SE Royal Hills Drive 02/29/96 14 of 16 \ aphaeNsys\DATA\REN\195-020\PERMITS\SEPA_CK.DOC 0 s.fvY 0 Cedar River Utility Crossing © City of Renton, King County Water Pollution *P�r,.ro� Control Division and Seattle Water Department b. Is site currently served by public transit? If not,what is the approximate distance to the nearest transit stop? Bus service is available along the Maple Valley Highway. c. How many parking spaces would the completed project have? How many would the project eliminate? None. 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? Temporary access roads for construction on the south side of the river will be required. e. Will the project use(or occur in the immediate vicinity of) water,rail,or air transportation? If so,generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known,indicate when peak volumes would occur. None. Periodically,the bifurcation structure will be inspected by King County WPCD personnel. g. Proposed measures to reduce or control transportation impacts,if any: None. 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. b. Proposed measures to reduce or control direct impacts on public services,if any. None. 16. Utilities a. Circle utilities currently available at the site: ectricity,natural gas,water,refuse service, telephone, sanitary sewer, septic system, other. 02/29/96 15 of 16 \\Raphael\sys\DATA\ EN\195-020\PERMITS\SFPA_CK.DOC ♦ ,• : . o��Y. o� Cedar River Utility Crossing + o •1 City of Renton, King County Water Pollution NVNT6� Control Division and Seattle Water Department 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. The project is construction of a City of Renton water transmission pipeline and King County WPCD sanitary sewer siphon line. C. SIGNATURE I, the undersigned, state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw any declaration of non-significance that it might issue in reliance upon this checklist should there be any willful misrepresentation or willful lack of full disclosure on my part. Proponent: }e 4f0/ Name Printed: Abdoul Gafour 02/29/96 16 of 16 \R phael\sys\DATA REN\195-020\PERMIIS\SEPA_CK.DOC 1111 / S:o-00 Golder Associates Inc. } 4104-148th Avenue,NE • `"•, F GoldeGolderRedmond,WA 98052 ��e ft r t,i ,¢es Telephone(206)883-0777 '•E`•'"s C' _ Fax(206)882-5498 t•,r,V 2 0 November 17,1995 r; ;(is � _"� .. . Our ref: 953-1239 RH2 Engineering 8383 158th Avenue NE,Suite 200 0 5 1996 Redmond,WA 98052 � ATTENTION: Mr.Geoff Clayton ®EV C TY OF R 1 ON ING RE: GEOPHYSICAL SURVEY OF THE CEDAR RIVER PIPELINE CROSSING, 590 ZONE TRANSMISSION MAIN,MAPLEWOOD,WASHINGTON Dear Mr. Clayton: Golder Associates Inc. (GM)is pleased_to present the results of our geophysical investigation along the 590 Zone Transmission Main,Cedar River crossing near Maplewood,Washington,performed on October 3 and 4,1995. The purpose of the • investigation was to locate areas along the river crossing where the bedrock may be less than 20 feet below the ground surface. We used ground penetrating radar(GPR)and seismic refraction to accomplish this objective. GEOPHYSICAL EQUIPMENT AND METHODS Ground Penetrating Radar Ground penetrating radar(GPR) is a high frequency(20 to 500 MHz)reflection technique that transmits radar pulses into the subsurface and records the subsequent reflections. A radar antenna is pulled along the ground surface or floated across the water,and radar pulses are recorded for every few inches of forward motion. The transmitted pulses are reflected from subsurface discontinuities that have contrasting electrical properties. Reflections can be produced by layering or other discontinuities in the soils,the water table,discrete objects such as pipes,drums,and miscellaneous debris. It was expected that a reflection from the bedrock surface would have a strong continuous reflection. A graphic record is produced in the field that depicts a cross-sectional view of the subsurface along the survey transect. A fiducial marker,indicated by a vertical dashed line on the GPR records,is recorded on the data as the antenna crosses landmarks or survey points and provides the horizontal scale on the record. The vertical scale of the cross-section is in nanoseconds and is converted to feet using an estimate of the radar November 17, 1995 2 953-1239 wave velocity in the subsurface. Sediment at the Cedar River site consisted of saturated sand and gravel,which typically has a radar wave velocity of approximately 0.2 feet per nanoseconds (ot/ns) (Gorin and Haeni,1989). A GSSI System 8 GPR unit was used for the survey. This system consisted of a 120 MHz antenna,a processing console,and a graphic display recorder. The time scale on the • graphic record was calibrated using 10 ns pulse calibration box. Reflections from the subsurface were recorded at a maximum two-way travel time of 340 ns,which converted into a maximum depth scale of approximately 34 feet Seismic Refraction The seismic refraction surveys were conducted with a 24-channel Bison 7000 seismograph. The detectors were 8 Hz vertical geophones and the seismic sources were either a 12 lb sledge hammer or 12-gauge industrial blank shotgun shells. The shotgun shells were used when the sledge hammer did not provide enough energy to overcome ambient noise. The seismic refraction lines were designed to efficiently detect a competent bedrock surface that was less than 20 feet deep. The geophones were spaced along a straight line at 10-foot intervals and five shots were recorded into each spread of 24 geophones. The data were digitally stored in the seismograph and later transferred to a computer for further processing and interpretation. • The seismic surveys were interpreted using SIP version 4.1,the seismic refraction interpretation software package from Rimrock Geophysics Inc. (Lakewood,CO). The seismic velocities were calculated using a reciprocal time-difference method and a regression method. The depth to the bedrock and other layers were calculated using the time-delay,time-intercept and ray-tracing methods. This software package is commonly used by the US Geological Survey-Water Resources Division for their seismic refraction processing and the methods are described in detail in published articles by Redpath(1973),Scott(1977)and Haeni(1988). • PREVIOUS SUBSURFACE EXPLORATION Subsurface geotechnical investigations were performed at this site in 1990 and 1991. It • consisted of three test pits and two boreholes (GAI, 1991). The tests pits and one borehole (BH-2)were south of the Cedar River where the seismic refraction lines were located (Fig. 1). The other borehole (BH-1)was located approximately 90 feet north of the Cedar River and was outside of the geophysical study area. The tests pits reached a maximum depth of 12 feet below ground surface (bgs) and encountered sand and gravel. Borehole BH-2 also encountered sand and gravel and terminated at a depth of 34 feet bgs due to refusal. The elevation of the refusal was at 22 feet above mean sea level,which corresponded with the same elevation where borehole BH-1 also had refusal. It was unknown whether the refusal was caused by coarse alluvial materials or a bedrock surface (GAI, 1991). November 17, 1995 4 953-1239 SUMMARY A GPR and seismic refraction survey was conducted at the Cedar River crossing of the 590 Zone Transmission Main,Maplewood,Washington. A summary of the conclusions is as follows: • Two seismic refraction lines were surveyed to the south of the Cedar River. The depth models for both lines were a two-layered model with the seismic velocity of approximately 1,500 ft/s for the upper layer and a seismic velocity ranging from 5,450 to 6,800 ft/s for the lower layer. The seismic layers are interpreted as unsaturated and saturated sand and gravel deposits,respectively. • No seismic layer was detected with a velocity that was typical for competent sandstone bedrock The calculated minimum depth to a bedrock surface that would not be detected by the seismic survey was 30 feet. • The GPR survey lines in the Cedar River detected a strong reflection event that could be a bedrock knob at a depth of approximately 23 feet located at the south edge of the river and extending approximately 10 feet north. No other GPR reflections were interpreted as a bedrock surface. • The bedrock surface was not conclusively detected by the geophysical methods, however,a conservative interpretation would be to assume that the borehole i . BH-2 did encounter bedrock at 34 feet bgs and the bedrock may be as shallow as 23 feet below the water surface along the south bank of the Cedar River. Golder Associates uses the due standard of care recognized in the industry for each of these surveys and has performed successful seismic refraction and GPR surveys in numerous site investigations. However,site-specific conditions and/or the physical nature of the subsurface target can affect the results of the geophysical data. The presence of a weathered sandstone layer at the top of the bedrock unit may affect the ability of the surface geophysics to detect or accurately determine the bedrock depth. We appreciated the opportunity to work with you on this project. If you have any questions regarding this report please feel free to contact us. Sincerely; GOLDER ASSOCIATES INC. Rowland Cromwell Project Geophysicist Robert H.Anderson Associate 1117RBC1.DOC Gn!dP_r®ccnrrin+oc November 17, 1995 5 953-1239 References Cited • Golder Associates Inc.,1991,Geotechnical Engineering Study Cascade Siphon River Crossing,Maplewood,Washington: Reference #893-1108.001,Golder Associates Inc., Redmond,Washington,7 p. Gorin,S.R.and Haeni,F.P.,1989,Use of surface-geophysical methods to assess riverbed scour at bridge piers: U.S.Geological Survey,Water-Resources Investigations Report 88- 4212,Hartford,Connecticut,33 p. • Haeni,F.P.,1988,Application of seismic-refraction techniques to hydrologic studies: Techniques of Water-Resources Investigations of the U.S.Geological Survey,Book 2, Chapter D2,86 p. Redpath,B.B.,1973,Seismic refraction exploration for engineering site investigations: • Springfield,Virginia,National Technical Information Service AD-768-710,51 p. Scott,J.H.,1977,SIPT—A seismic refraction inverse modeling program for time-share terminal computer systems: U.S.Geological Survey Open-File Report 77-366,35 p. • • Golder Associates \ GEOPHONE 1f 1 iPN N1 - v� I Z / la I /j U y/, GPR LINE 4 —.—.—H o / / , — GPR LINE 3 SANITARY SEW:R ANH LE ----------- ss— . — _— is" ` -�____._ h.�yrl -.„ V.'__ _ _-� --�-_ - _ - OPNONE/`1 r �J _5 b 4. ----3-.,�-----'--=a v- ' �- _-v--'-- —_ TP_2 EISMIC LINE 1 . - ?c yy._-. �). o •NONE '2{ _ t S _ 0 TP-3 v;�_— --::a ,_.r GE ``TT,`St ii?N``I\\�1 'i � it'11 tr?VATT� tl ? .t ,,,,—-._._ _._ _A TP-1 "'l• lnti .`t...._`1,n1�t"i`1? ?lit�;t �_ti.-...• :r:,'1,.•*+,$1 ;t'JfS i�i 7;�A1 ��.S*.+l 'txi;�i:1 t,��'.V;._ ii 7'.1.,;i',n:\I t i'ii`i '�'•`',1• ?\k."',.yTV,\a. ` t'TZ4)1)i G.1 " Itl ?; : t p ;,t. , , : ....'i?,1 •t„1? t`,.;1 ' ._L: L{ ,. ,cavil • : ti •• '.....n..•�.,.�' t t? t.jili}F��it1 , .1: ��a ea . -. .., s i , - ,�1 t� t=s5 • / /\?F; ?\ i:.,,,,1,% > -\ `� A. 0 1 •.,. ^ a z� `C GEOPNONE/24 ``~�� i (7 • J \I I LEGEND: i—•—•—I APPROXIMATE LOCATION OF GPR SURVEY LINE I----—I APPROXIMATE LOCATION OF SEISMIC SURVEY LINE 1, FIGURE 1 GEOPHYSICAL SURVEY LINES •- BBH-2 APPROXIMATE LOCATION OF BORING (CAI, 1991) 590 ZONE TRANSMISSION MAIN DTP-2 APPROXIMATE LOCATION OF TESTPIT (CAI, 1991) - �� 60 CEDAR RIVER CROSSING • 4XX,.4 GPR REFLECTION EVENT AT APPROXIMATELY 23 FT BELOW WATER SURFACE FEET • RH2/CEDAR RIVER GEOPHYSICS/WA Golder Associates C:\ADCADD\GIVIL\P\9531239\52395 11-17-95 15:04 led:NONE 4 Wetland Delineation Cedar River Pipeline Crossing Renton, Washington FIEC!VED MAR 0 6 1996 DEVELOPMENT PLANNING CITY OF RENTON Submitted to: RH2 Engineers 8383 158th Ave. NE Redmond, WA 98052 March 2, 1996 Cooke Scientific Services 4231 NE 110th St. Seattle, WA 98125 1 ti Wetland Delineation Cedar River Pipeline Crossing Renton, WA March 2, 1996 Submitted to: RH2 Engineers 8383 158th Ave. NE Redmond, WA 98052 Submitted by: Cooke Scientific Services 4231 NE. 110th St. Seattle, WA 98125 (206) 440 3130 I ) REPORT SUMMARY • The City of Renton;King County Water Pollution Control Division,Seattle Water Department;Washington Department of Fisheries and Wildlife;and the Mukleshoot Indian Tribe are pursuing a cooperative utility line upgrade and fisheries enhancement project. This project consists of the installation of several pipelines and a fish weir foundation under the Cedar River at (approximately) river mile 3.1 (Section 21,Township 23N, Range 5E) in King County,Washington(Vicinity Map,Figure 1). A pipeline corridor will extend to the north and south from the river crossing in a mixture of upland and wetland habitats bisected by a dirt access road and a Class 3 stream(King County SAO 1994). Three wetlands exist within the corridor, although none of the wetlands were identified by the King County Wetlands inventory(1990). Wetland AB is a narrow wetland located within a drainage to the east and adjacent to the dirt road. A class 3 stream enters the base of this drainage from the east and crosses under the road through a culvert. The stream daylights west of the road and meanders through wetland CD,a broadened wetland system heading in a westerly direction. The wetland sweeps around an upland island then flattens out along the road's west edge near the base of the slope. The southern portion of the site is nearly flat. Wetland E is located between.the Cedar River shoreline and the base of the slope within this flattened bench(Sensitive Areas Map,Figure 2). Wetland AB is a small 0.4 acre, Category 2,spring-fed wetland,which is dominated by vine maple and salmonberry with overhanging Douglas fir,western red cedar,and western hemlock. The soils are composed of dark brown,fine silty barns overlying an impervious clay horizon. Wetland CD is a 0.9 acre, Category 2 wetland, dominated by salmonberry,red alder, and piggyback-plant. Some of the soils are similar to those found in wetland AB but are scattered throughout with pockets of fine sand scattered. Wetland E is a 1.2 acre, Category 2 wetland dominated by giant knotweed,salmonberry, and red alder, adjacent to the Cedar River. The upland areas surrounding the wetlands support a medium-aged,mixed deciduous coniferous forest of big-leaf maple,red alder,Douglas fir,western red cedar and western hemlock with an understory of salal,sword fern,and common snowberry. The area between wetlands AB and E on the east side of the road is dominated by Scotch broom and red alder. TABLE OF CONTENTS • Introduction 1 Background 1 Regulatory Jurisdiction 3 Methods 4 General 4 Field 4 Vegetation 4 Soils 5 Hydrology 6 Wetland Functions and Values 6 Results 7 General 7 Topography 7 Hydrology 7 Soils 7 Vegetation 9 Wetland Descriptions 9 Wetland AB 9 Wetland CD 11 Wetland E 12 Disclaimer 14 References 15 Table Table 1: Summary of Wetland Characteristics 13 Figures Figure 1: Vicinity Map 2 Figure 2: Sensitive Areas Map, Renton Pipeline Crossing 8 Figure 3: Soils map, Renton Pipeline Crossing wetland location map 10 Appendices Appendix A: Species List Appendix B: Wetland Delineation Determination Data Sheets Appendix C: Wetland Functional Evaluation Data Sheets ti WETLAND DELINEATION CEDAR RIVER PIPELINE CROSSING RENTON, WA INTRODUCTION Cooke Scientific Services (CSS), was asked by RH2 Engineers to locate, evaluate, and delineate wetlands on a site scheduled for a water pipeline crossing of the Cedar River in Renton,Washington. The site is located Section 21, Township 23N, Range 5E (Figure 1). The 'site is situated on a northeast facing slope with a medium-aged second-growth mixed coniferous deciduous vegetative cover. From the base of the slope the site flattens to the south bank of the Cedar River. This area is highly disturbed with a number of invasive species. Because of the location and site conditions of the subject property and federal, state, and local regulations that control activity in wetlands,an investigation was warranted to determine the presence and extent of wetlands. The purpose of this report is to document the work performed which included identifying discrete wetlands, delineating their boundaries, mapping their locations, describing their characteristics,and evaluating their functions and values. This report also contains wetland ratings defined by the City of Renton's Ordinance No. 4346 (1992) and amended by Ordinances 4478 (1994) and 4538 (1995) using field data collected during the site visit. Background A pipeline crossing in Renton, Washington is scheduled for installation in Renton's Maplewood District on the south bank of the Cedar River (Figure 1). The Maplewood Golf Course is directly across the river. The site is bisected by a compacted dirt access road off of Royal Hill Drive. Investigation of the site was limited to areas lying 200 feet on either side of the existing dirt road and approximately 360 feet from Cedar River's south shoreline. The road turns at the base of the slope and continues to the southeast parallel to the river. The site slopes to the northeast at approximately 8 to 12 percent. The sloping portion of the site is predominantly forested with Douglas fir (Pseudotsuga Menziesii), with some western red cedar (Thuja plicata), western hemlock (Tsuga heterophylla), big-leaf maple (Acer macrophyllum), and vine maple (Acer circinatum ). A drainage (wetland AB)from an expanded hillside seep lies within a drainage east of the dirt road. A stream enters the base of this drainage from the east and crosses under the road through a culvert. Previous investigations conducted by RH2 Engineers in conjunction with this investigation, classified the stream as Class 3 without salmonids (King County SAO, 1994). The stream originates from groundwater seepage from the surrounding slopes west of the road and meanders through wetland Call heading in a westerly direction, and terminates. The wetland sweeps around an upland island then flattens out along the road's west edge near the base of the slope. The southern portion of the site is nearly flat. A third wetland (wetland E)is located between the Cedar River shoreline and the base of the slope within this flattened bench. Cooke Scientific Services March 2,1996 1 Ia at)- Ji, l I❑ u _ IIJ� ,,, ii ° � �11 �] R, LAKE HINGTON ` I II iv-- o iriaL____;16:- i\s. 3 , ' , .' .wv:jit, rigii i I n :„.• ., . ._ L \ PP, IF--D' • .• ' ,4, , __] t ---, ,_: II II I� Iu[11 ffir / Ll� II l III _ ^oIINN8, ' I '�'sa R • D \IEM� �oh :PPPI `a -= h '� .i: \' M iy i T / I < gMR it �_�,� I / eII 3dRi _ I �TT.f Or—TIiIPl.,.......J_____- _,. aaii . lam ,0 — \ ., 6 � I ' �< SE 511.Si 0--r11111IIiipf/ 0 is_N_. -rrs,,, ----4111-1, 4* / '''4Azoi, , !EU,'" Eli. - 45..0, / ,P°°1 C ,g ,� � sF plipv �i i -���i PROJECT LOCATION �j��:e,, 769 °� , -� � RIVER MILE=3.1 f " a ; , i , le,.1‘'. i6,,it. %Dr Z i V* 1" ; .=-_- _.-,._- = 4. 00 _... P.. '''. CC: i . °46,"44 1 Iff- - .. .. -N VI I , SE Mil �■ 6 ,y i Alt lit: ' ' Dr ill E21 e4• t,,,,u 6DC:Sl I SE 161at St )*EL] c-t -iT �14 .1\ ( n :77r-t � I il---r- _____\ ‘A, II w----,---nr-it mo - 11 PROJECT INFO: Figure 1 LATITUDE: 47' 28' 20.6" } VICINITY MAP f -i�..�. :k LONGITUDE: 122' 10 07.9 ,,r „,_ ' :: . SCALE: 1" = 20001 g;2._ r - " 1,` : ENGINEERS PLANNERS - .f z A .. ._ : cer SCIENTISM'S DRAWING IS NOT TO SCALE • IF BAR IS NOT 2" LONG 0 1" 2" �„\18 0 ,\ 20 Wetland AB is dominated by vine maple (Acer circinatum) and salmonberry(Rubus spectabilis). Wetland CD is dominated by salmonberry, red alder (Alnus rubra), and piggyback- plant (Tolmiea Menziesii). Wetland E is dominated by giant knotweed (Polygonum sachalinense,). The uplands surrounding the wetlands supports sword fern(Polystichum munitum NI)and common snowberry(Symphoricarpos albus var. laevigatus). The patch between Wetlands AB and E on the east side of the road is dominated by Scotch broom (Cytisus scoparius). Before the site visit, background reference materials were assembled and reviewed to familiarize personnel with the site. These references include the National Wetland Inventory Maps (U.S. Fish and Wildlife Service [USFWS] 1979), The King County Sensitive Areas Inventory maps(King County,1990), and the Soil Survey of King County (Snyder et at, 1973) One on-site wetland evaluation was conducted on January 23, 1996. Three wetlands were identified and delineated and flagged. During the delineation process, areas were considered wetlands as defined by Section 404 of the Clean Water Act and as implemented by the U.S. Army Corps of Engineers (Corps) using methods. consistent with the Corps Wetlands Delineation Manual (Environmental Laboratory, 1987). Regulatory Jurisdiction The delineated wetlands are located in Renton, Washington. Several federal, state, and local regulations may apply to development proposals in and near these wetlands. The agency having jurisdiction over development activities that affect these wetlands is currently the City of Renton. Renton's Ordinance No. 4346, (1992), and amended by Ordinances 4478 (1994) and 4538 (1995) requires the use Corps Wetland Delineation Manual (Environmental Laboratory, 1987) with the letter of guidance issued in 1992 (USACOE 1992). The Washington State Department of Ecology (WDOE) reviews or approves many federal, state, and local permits. The State also requires the use of the 1987 Wetland Delineation Manual (Environmental Laboratory, 1987). The Washington State Department of Fish and Wildlife administers the State Hydraulic Code,which is intended to protect fish and their supporting habitat. Pursuant to Section 404 of the Clean Water Act, the Corps regulates the discharge of dredged and fill materials into waters of the United States, including wetlands, through the Corps'permitting process. The Corps and the U.S.Environmental Protection Agency (USEPA), which have joint authority over Section 404 of the Clean Water Act,require the use of the-Corps Wetland Delineation Manual (Environmental Laboratory, 1987). These two agencies define wetlands as: Those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally indude swamps,marshes,bogs,and similar areas. Washington state, through the WDOE, has authority to issue 401 Water Quality Certification for projects that require individual Corps permits under Section 404. Such projects involve filling or grading within navigable waters and waters below the headwaters of streams and rivers (including adjacent wetlands), filling or grading of more than 2 acres of isolated waters (including wetlands), or filling or grading within waters (including adjacent wetlands) above the headwaters of streams and rivers. Nationwide Permit 26 may allow fill-related impacts of less than 2 acres of isolated wetlands or adjacent wetlands located above the headwaters (defined as an average annual flow of 5 cubic feet/second)with several restrictions. When a wetland fill with less than 1 acre Cooke Scientific Services March 2,1996 3 of impact is proposed under Nationwide Permit 26, fewer restrictions apply. If wetland impacts are between 1 and 2 acres, the Corps must be notified first and may authorize the action, provided the State of Washington issues a water quality certification. Generally, the Corps will issue a letter of authorization under Nationwide Permit 26 within 6 to 8 weeks after an application is submitted,provided no unresolved issues emerge. Wetland boundaries delineated by CSS are subject to verification and approval by jurisdictional agencies. Any site design work prior to verification of wetland boundaries is subject to corrective changes. METHODS General The primary purpose of the site visit was to locate, evaluate, and delineate wetlands associated with the project site. A search was made of all available that might have previously identified wetlands on the site. No wetlands were identified in any of those references. Field To determine the location and extent of wetlands, CSS staff traversed and examined areas to be impacted by the proposed pipeline crossing. Wetlands were identified on the basis of the presence of hydrophytic vegetation, hydric soils, and wetland hydrology using the routine method outlined in the Corps Wetland Delineation Manual (Environmental Laboratory, 1987). During the site evaluation, detailed sample plots were located in distinct representative vegetation units in order to characterize the wetland community and determine the rating of each wetland. In addition, a general assessment of the functions of each wetland was performed. A delineation of wetland/upland boundaries was then made by walking and flagging the edges of each identified wetland. Vegetation Plants typically adapted to wetland conditions are considered hydrophytes. The data were collected consistent with the hydrophytic vegetation procedure of the Corps Wetland Delineation Manual(Environmental Laboratory,1987). Dominant plant species (usually those species with greater than 25 percent cover) and subdominant species (usually those species with between 5 and 25 percent cover) were recorded in each vegetation stratum (tree canopy, shrub layer, and herbaceous layer). The wetland indicator status of each plant was assigned using the USFWS National List of Species that Occur in Wetlands: Northwest—Region 9 (Reed, 1988) and the Supplement to Wetland Plants (Reed, 1993). The indicator codes for plant species are noted below: Cooke Scientific Services March 2,1996 4 Code Designation Wetlands probability*1 OBL Obligate wetland species > 99 FACW Facultative wet 67 to 99 FAC Facultative 34 to 66 FACU Facultative upland 1 to 33 UPL Obligate upland < 1 NI No indicator status *lpercent chance that plant found in a wetland When 50 percent or more of the dominant and subdominant species in each stratum (tree, shrub, and/or herb layer; considered cumulatively) have an indicator status of OBL, FACW, and/or FAC,the vegetation is considered hydrophytic. Plant nomenclature used in this report follows Flora of the Pacific Northwest (Hitchcock and Cronquist ,1976); and The Jepson Manual, Higher Plants of California (Hickman, 1995). Scientific names and indicator status are given only at the first reference to each species. Eight-letter species codes,which represent the first four letters of the genus and the first four letters of the species,were recorded on the field data sheets (Appendix A). Wetland community types will be discussed as they are described by Cowardin, et al. (1979). The community types found during this study were palustrine forested (PFO), palustrine emergent (PEM),and palustrine scrub/shrub(PSS). Wetland ratings and buffer designations were assigned according to the City of Renton's Critical Areas Ordinance (Renton, 1992). Soils Before the site visit,soil survey maps of King County,prepared by Snyder et al., (1973 ) for the national Cooperative Soil Survey of the U.S. Department of Agriculture (USDA) Soil Conservation Service (SCS) were examined. SCS soil maps may not be sufficient to precisely determine the extent of hydric soils on a site because of mapping methods and scale. Most SCS maps are produced using aerial photographic interpretation with only limited field verification. Map units of a non wetland soil commonly indude hydric soil and vice versa. Hydric soils are those that are saturated, flooded, or ponded for a sufficient time during the growing season to develop anaerobic conditions that favor the growth and regeneration of hydrophytic vegetation (United States Department of Agriculture [USDA] 1985). Soils were analyzed for hydric indicators as described by the Corps Wetland Delineation Manual (Environmental Laboratory, 1987). The SCS, in cooperation with the National Technical Committee for Hydric Soils, has compiled lists of hydric soils of the United States (USDA, 1991). On-site samples were taken in each wetland plot using a 20-inch soil probe or auger. Soils were characterized using standard SCS protocol. Soils colors were identified using a Munsell soil color chart (Kollmorgen Corporation, 1988). Depth of soil saturation was recorded for each plot. Many probe samples at locations across the wetland/upland boundary were examined in order to determine the exact boundary line. This multiplicity of samples was used to examine similarities or differences in soils between major sampling points and establish mapped soil unit boundaries. Cooke Scientific Services March.2,1996 5 Anaerobic (saturated) conditions cause hydric soils to form certain characteristics that can be observed in the field. Hydric indicators include: an 8-inch or greater layer of organic material at or near the surface, the presence of a matrix chroma of 1 or less in unmottled soil or 2 or less in mottled soil, gleyed soil, organic soils (peats and mucks), and accumulation of sulfidic material. Hydrology Wetland hydrology is considered present when there is periodic inundation or soil saturation of the surface for a specified period during the growing season (Environmental Laboratory, 1987). Wetlands need not be wet year-round to support hydric soils and vegetation. Under normal conditions, hydrologic indicators are used to determine if the hydrology is either currently present or can be inferred from the guidelines provided in the Corps Wetland Delineation Manual (Environmental Laboratory, 1987). These indicators include: site inundation, soil saturation to the surface or within a specific distance from the surface, water table depth, water marks on vegetation, drift lines, plants displaying hydrophytic adaptations,waterborne sediment deposits, algal deposits on the soil surface, and wetland drainage patterns. The criteria establish the depth and duration of inundation or saturation(including capillary fringe) necessary to determine positive wetland hydrology. The Corps Wetland Delineation Manual (Environmental Laboratory, 1987) and subsequent letters of guidance (March 1992) establish the hydrology to be present if the soil is inundated or saturated within 12 inches of the surface for at least 5 percent of the growing season. The growing season is defined as, "When the soil temperature at 20 inches gets above 41'F, or after the last date that the air temperature gets below 28'F in 5 out of the last 10 years." The rainfall data from the closest weather station in King County establishes the growing season to be 280 days. The duration of saturation would therefore be two weeks{verified by Chris McAuliffe, Corps (April 1993)}. Wetland Functions and Values Wetlands play important roles that provide valuable benefits to the ecosystems in which they exist. Each wetland serves some function that has some benefit, although specifics vary from wetland to wetland. Understanding and identifying these benefits and roles is currently limited to qualitative and semi-qualitative judgments and knowledge of potential functions and their benefits. Wetland functions and values identified by many sources (Adamus et al., 1987; Mitsch and Gosselink, 1986; Sather and Smith, 1984; and Reppert et al., 1979) include: • hydrologic support • storm and flood • water attenuation • flood peak de synchronization • sediment stabilization and erosion control • water quality improvement through biofiltration and retention of sediments nutrients, and toxicants • high primary productivity • accumulation of organic material • important nutrient cycling and utilization • food chain support • habitat diversity for fish and wildlife m refuge for threatened,endangered, and sensitive species • passive and active recreation Cooke Scientific Services March 2,1996 6 The entire site was examined for the presence/absence of these functions and a qualitative assessment of the value of the function,was made using a semi-quantitative method (Cooke, 1995). See data sheets Appendix C. RESULTS General CSS identified and delineated three areas that qualify as wetlands on the project site. These wetlands are designated wetland AB, wetland CD, and wetland E (Figure 2). Wetland AB is an hillside seep which is fed from groundwater that emerges from the toe of the slope, and flows into a drainage swale located to the east of the filled dirt road that bisects the project area. Wetland CD is a larger system located to the west of the road. It is fed by the stream that initiates to the east of wetland AB, as well as from seeps and other drainages from the hillside to the north and west of the dirt road. Wetland E lies on a flat bench adjacent to the south bank of the Cedar River. It is the wetland corridor associated with the river. The National Wetland Inventory map (USFWS, 1987) does not identify wetlands on the site. The King County Sensitive Areas Inventory maps (King County, 1990) also did not identify wetlands on the site. Topography In general,the topography of the property slopes to the northeast at approximately 8 to 12 percent, except the flattened bench adjacent to the south shore of the Cedar River. The topography rises in the middle of the site on either side of the road, then falls sharply to the flood plane. Hydrology Wetland AB and CD are fed by hillside seeps, surface runoff, and a stream. Saturated soils were found throughout these wetlands. Soils samples taken from these wetlands were found to be silty loams with a chroma of 1, an indicator of hydrology. The soils of wetland CD were inundated from 0 to 6 inches from the ground surface. Wetland CD also has large patches of bare ground,another indicator of hydrology. Soils The Soil Survey of King County (Snyder et al., 1973) identified the soil on the site as very steep Alderwood and Kitsap soils (Figure 3). Although these soils are described as non-hydric, both can contain hydric inclusions within the mapping units. This unit is about 50 percent Alderwood gravelly sandy loam and about 25 percent Kitsap silt loam. The Alderwood soil is moderately deep over a hardpan. Typically,the surface layer is very dark grayish brown gravelly sandy loam about 27 inches thick. Depth to the hardpan Cooke Scientific Services March 2,1996 7 - , •-- -- --v ) •, 1 ') ._ . • . . . . . . • • .,N. . . \ , CATEGORY 2,1.2 ACRE RIPARIAN WEILAND - :1-,`4,:-.PAfP'"I • .•:.,.• " . t., ..•‘\ . f \ 10 • C. DOMINATED BY GIANT KNOTWEED,SAUAONBERRY. •• 4.-•'.';`VIVI.trI4. • ,i • \ .‘•3 CATE FiY 0.9 ACRE \ciA \ WERAND DOMINAIED GBf-Y SA2LIA.ONBERRY, RED ALDER.AND PIGGYBACK-PLANT AND ALDER MODERATE FUNCTIONS •. AI Igi,-14:1444121, •• Fri ' / . i \ IAODERATE TO LOW FUNCTIONS IN:1'A tip,it,,,,;.t :. 11—. \ NATURAL HIGH-FLOW CONVEYANCE • A•I'.i 1..4•44 • ,,',' . ' ...' ..4ji 41 ' • .4.,:h..::. .41 I,. t, • m . , \ CHANNELS; DRY DURING LOW ROWS • •... : • 6.,I. P-:$ ., - Q 1,... .• . iii.•:!...: i.'i:. I r 4.. 0 0 --,...s.....\‘,..,.., \ \ •..,- ,•. • . 1 )1 .. f. 2 0151U1BED \ ,, , .... 1.9,XED FOREST ,, • A: •';1,1:ii:1,.- sAr . .. 3J n a .....„.....\\\ \ „,.....,, .1„...., .. •„._. . , \ ,.. „..., t, _, .„._.v UPLAND \ j ',' : BIG-LEAF NAT. :;f;., , . \\\\;\\.,. r-, : 1 4 : ' 1 s DOIAINAIED BY /'i .. • I RED CEDAR, ,, ,:- 1 7.7.:::-V--r'''. ..7"--11') .. : it .,i.7t:.i:: r.-i..,...•tt. ,...,... :., SCOTT'S BROOM / : E : •• :HEMLOCK • ,-- • I,:-: \•"',..."':••• „?'‘vr•:. \ \ •,,,,:>k•• • 4, \ :.!1 • , 1 ;!I;.... 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'-'----- ..••.-...-.-.7.... \‘,. --.:\ ' 1.. -- ---::. - . • ( / , / -- • • _......- ..........- ,...:.-....:.-.::::;:..-::...--,-. - ff c ....- -.,.--:..:-.-.-.7;A-5-;•• H.11,.:i;;; ;I:,t!g':i4it.,11'1,::: •.1: --2•11j " NI,•:• . •• s 1. \ • \ ; -_.•11.- 1 . ..- \ '-, \ i 7:- .1,-" ,• ,• .,• . - ,. ___ .:_..„_,____- .-- /_ ,.... ., -- -____,.._ _.-. -' •-•-. .__ .. ,.. . . • . .:1:•;,. ,., C:s. .---..=-1:--1::-----.:1;7.... . • ....••-•-•:• '7------.;7, ‘-:;'.:.;•:1••:•4'.• EACIthil i fi 1 :: ''' \; . •:i -----4----- --"----r• • ' : --i-• • • ' ; ; ‘ • .,, ,4••=.'•!7.---,i,r.• ,-'.__, _, , •' ..,v-t 3M-C,ti •• - . . \....,.. \\,. : 't ‘., '• \:..\ i Zi.'., ‘qi.j4 i,1 y,zlolnink, . 1 '2- „ rt, It : . • ; , , : ; t .,.... . — ; . ., . . : . ., .. , . . , • ..< \.\.. . _ ..:-- ' , / ' --.., -7-.....-----,--.- '...., ,..,......• .t!!.-:,:,........!.4:„.,.. c...7. ___.....- . ; k...\‘..',I "\ \ \ ...,....,„\\... \ ‘ '.. .-t-:,.:..--;...• ___,.------- i '. L: • :::-.i: V /••:.\‘1 •'1:: \ 1 ••• ‘.. \ ‘• .% ••••', ' .." : /,' ‘. .. 1, \ / s, •••., -- ._ ••••-•-•(., , - • a_ASS 3 STREAM ;i i!-1,.'.', ','Ith,'WO'''• • -81 -- .• - _, . ....,4 / • :t - . 1, : ..•.• 1 t .. . A 0, . TERMINATES IN WETLAND C-0 c 7 ! \\\\ - ‘ '... \.. . •: '; ' : . . • •. , . .•'• „,,,, , ,. ..., \____..._.,......,....,. ..--•,...,-,,--,,,,,-„,i,\,- , . , \`..- ' "\ "-. \‘\• -„. 1 ,• :- , „ , : ..,. , , i ‘,.. 7------, --,,„t4. / ,c -\ ...-, .c, \ • ;:,;„:.,..:',..4..,';;I::..4';',...;'4,4":::„;"i,::.:4' -1 0 .. , . .. . • „\ ,..„. ) • : ,,,..„. ,.. \ .. , t.- , : • .• .. . a ,..• : ,, -.:........•••,::„.., : , t. 1. .,.. iz % • e . . .,. •••• .. • r • .. , . • , ! DISIURBED UPLAND DOMINAIED BY SCOTT'S BROOM ••• : •••: :11.:II, s,..,i;• , /•..1.4.i,,•"'1.1,11StIrf • I • ,,,, .fi ,•.• , ...). "....,.'.., 1 i.:: ..:.,41, \ \ . / .''-"}I'IJ •if ..,,3;.p-44-,,, • .„,. , .- ...... ,,,,,,,0 • ... ... / 1 I ' ' - CATEGORY Z 0.4 ACRE SPRING-F133 WEILAND DOMINATED : it''''''''''''Pl53' . iil.c.'. ,.../ '•-• ' ." ••••/II \ \-I 1. •-• ; : :1 , •... ; BY IANE NAPLE.SAUAONDERRY.AND PIGGY BACH-PLANT : Pgif.fi'd.L1.1$ - 1,14. / .../ ,_...• -'''' / ;\ \ '...,..-s. \A. k , ) THRI RED CEDAR.HEMLOCK,AND ALDER MODERATE TO • ../Z---\\ :.•V,I.;:t1'''' •• „ ,j .., .1,,Lty; 0 i \ :‘,-..,:.\,.., ›.',. \ .., .1 ,./ :" :,.. ..4,,_._._; ,.. ..,. ,... -...A , ...., _.._. • LOW FUNCIIONS ' • t3:N.•3":',II.74• : 1 ••• • •.• ', \‘I 1 1 \ i •: • .1,SAK:1-..t&.11,5,' . 4 i I • :1 '.., 1. LEGEND ljj)AREA • :i-..:•.., NOTE: LOCATIONS OF WETLAND E AND THE NATURAL HIGH-ROW CHANNELS ARE APPROXIMATE • • i5.1:,.:•n11:-/I1-I:::t1 CEDAR RIVER •.'.••F 43•:•:-:::} 14M.I'`.1'4. RIVER MILE AT UTIUTY CROSSING IS 3.1 _.: ----------- STREAM et Is'A. 1,.., F.I.R.M.100 NEAR ROOD UNE ..• „if 44 -,, '•'!;;,1.7D1 :-;••••0 ENGINEERS ..JJ, " PLANNERS ,. . J. -. ORDINARY HIGH WATER MARK , - SCIENTISTS REDMOND WENATCHEE OLYMPIA . it210°06)%609:81408582 i8"009i 766213-80015520 ((360)770225:8060132 •-•-STEEP SLOPES-.- STEEP SLOPE SENSITIVE AREA 800) ' .. , RENTON/KCWPCD/SVVD CEDAR RIVER UTILITY CROSSING Figure.2. • SENSITIVE AREAS MAP ..,8 NO. 111 INC.I.EIA 41.6. MR SCONE ROT Cot MI MI 195.020 I CRUX_PI6 I SCH I PS [FEB 29.1996 I 1••-•200. I 20 I RO5 I 10;1 8 ranges from 24 to 40 inches. Permeability of the Alderwood soil is moderately rapid above the hardpan and very slow through it. Kitsap soils are very dark brown and yellowish-brown silt loains that extend to a depth of 24 inches. The substratum is a silty clay loam. These soils are found on terraces and gently- undulating to steeply-sloped terrain. Vegetation Wetland community types found on the property are: forested/deciduous scrub/shrub (Cowardin type PFO/PSS) wetlands (western red cedar, salmonberry); and emergent (Cowardin type PEM) (piggyback-plant) . A species list including all species found is provided in Appendix A. Only dominant and subdominant species are discussed in the text. No endangered, threatened, or sensitive species have been found or identified on the project site (Washington National Heritage Program, 1991). Wetland Descriptions Field data sheets are located in Appendices B and C Wetland AB Wetland AB is a 0.4 acre, Category 2, PSS/PFO wetland dominated by vine maple (Acer circinatum, FAC-), salmonberry (Rubus spectabilis,FAC+), and piggyback-plant (Tolmiea menziesii,FAC)with overhanging western red cedar(Thuja plicata,FAC),western hemlock (Tsuga heterophylla, FACU-), and red alder (Alnus rubra,FAC). It is located in a shallow ravine on the east side of the access road. At the time of the investigation, there was a small stream running through the wetland which entered from the east. Depth of the water in the stream's channel was approximately two inches. The system is also fed by hillside seeps. In addition to the plants already identified,the vegetation consists of tall mannagrass (Glyceria elata, FACW+),stinging nettle (Utica dioica,FAC+),red elderberry(Sambucus racemosa, FACU, sword fern(Polystichum munitum,FACU), different leaved water-chickweed (Callitriche heterophylla, OBL), spreading wood fern(Dryopteris expansa,FACU), and two mature big-leaf maples (Acer macrophyllum,FACU). The soils of wetland AB were saturated very dark brown (10 YR 3/1) silty Mauls . This area was determined to be a wetland because of its hydrophytic vegetation, hydric soils, and wetland hydrology. The access road lies to the west of wetland AB. Upland vegetation to the east of the wetland includes Douglas fir (Pseudotsuga Menziesii, NI) mixed with western red cedar (Thuja plicata,FAC),western hemlock(Tsuga heterophylla, FACU-), big-leaf maple (Acer macrophyllum, FACU) and vine maple (Acer circinatum, FACU+). Also present are sword fern (Polystichum munitum,FACU) and red huckleberry(Vaccinium parvifolium,NI). Wetland AB has a low potential for groundwater recharge because of the site's steeply sloped terrain. The topographically high ground to the east and west of the wetland provides ground water discharge near the base of the slope. The channel in the bottom of the drainage will provide low detention and retention of rain water which falls on the site and therefore provides low floodwater attenuation because of the lack of storage area. The site receives low . inputs of sediments, nutrients and toxicants. Thus, the site's function of retention and transformation of these materials is low with current conditions. Moderate to low internal Cooke Scientific Services March 2,1996 9 • •-•' - ',„. : N,z,'", ,,,'. ,s .';- ,,;•it "••=7-,--1---- „...------r L,..',_L.. ,'....., ,..;...-..i...4."-• ,...7-.,:;,":,',;.x.i,,,,;;--'.: .....-.-- ;',.•';:+ ;!...:. ..'-...... . 9 .9- •••.--=--:---.1"4-.4•.'?'-'4-1!.. .'•. ,'..ii,.....'•::'• . ;?,,j.2,,N.TS:ili.:,,,,,. ..,• ,, ,.;.,•,,,,;.:•1!::!,::::', •,, ig!: . .,*.--L;"!‘1:. '-.9-1 '9'.f:#'74'i';'1,.. .,•_"' '''''''.e.'7,C:' =:::';A;;::',,,Z'.;w", ',-,-. ;.;:,•;.•,1•:,•, •,.:.,,,,..-.,•• , „.,....,!, i".,,„. Nt.'-1;.!1/41%,,, ;,!,, ',•••,: i-.-=17., '''....-'."r•'- '',;•:,!•'%:: :-.,,-. .i-,•, 1•;1„,,•,,,,,;,!,'•:,:•••••-,-,:‘,,..::.,,,•,.i,•,,,,,....,, : --. ° '''' 44.4-'1! Y77.."*.'ll' 2fri\\''' ',*ki:i'f...: '"'',"='-= ';!;:,,s---,Fo•F.-.:.:-,,ii ,,,,,,-,,„:,:.:-L.,..•,.,, 'Y ' - i -. 7."41,3,-%!4••••';`,.t.)e• '-'•.-1-,-,:_ . :" 1 ,''''.;'..:::At,'i?-;•; :'"I-;.-, -/7: -;. 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'• 't ii/..•twe .,.. -".",:. ,•.!,;.:, 1,.,::- . \.....t.,,.., ,,,, ..,.. :./ ..• Identified Soil Units sandy loam AkF=Alderwood and Kitsap soils,very steep AgC=Alderwood gravellypercent slopes Figure 3. Soils Map, Renton Pipeline Crossing Cooke Scientific Services March 2,1996 10 • decomposition and low nutrient cycling on the site contribute to low primary productivity and low organic accumulation. There is moderately high detrital transport. These productivity characteristics and moderate vegetation cover and quality in terms of species richness provide moderate to low food chain support and wildlife habitat. There is moderate to low potential for invertebrate,amphibian,mammal, and bird habitat. Due to it's size and isolated location, wetland AB has minimal recreational and aesthetic value. Wetland CD Wetland CD is a 0.9 acre, Category 2, PSS/PFO wetland located west of the access road about halfway down the hill. Two lobes of the wetland are divided by a patch of upland that rises with the study area. The lobes are connected to a larger system that spreads west of the pipeline corridor. A Category 3 stream (King County SAO, 1994) that enters at the base of Wetland AB crosses the access road through a culvert and enters CD. This stream meanders through CD sweeping around the base of the upland island. Wetland CD is dominated by salmonberry (Rubus spectabilis, FAC+), red alder (Alnus rubra, FAC), piggyback-plant (Tolmiea Menziesii, FAC), and mosses. The vegetation in the wetland also includes devil's club (Oplopanax horridus, FAC+), tall mannagrass (Glyceria data, FACW+), largeleaf avens (Geum macrophyllum, FACW-), creeping buttercup (Ranunculus repens, FACW), miner's lettuce (Montia siberica, FAC), Himalayan blackberry (Rubus procerus, FACU), three-leaf foamflower (Tiarella trifoliata, FAC-), lady fern (Athyrium filix femina, FAC), licorice fern (Polypodium glycyrrhiza, NI), Dewey sedge (Carex deweyana var. deweyana, FACU), vine maple (Acer circinatum, FAC-), sword fern (Polystichum munitum, FACU), water-parsley (Oenanthe sarmentosa, OBL), red huckleberry (Vaccinium parvifolium, NI), and reed canarygrass (Phalaris arundinacea, FACW). The soil is a silty loam with no histic epipedon and a dark brown color 10YR 3/1 The soil is saturated to the surface with inundation to within 6 inches of ground level. This area was determined to be a wetland because of its hydrophytic vegetation, hydric soils, and wetland hydrology. Vegetation found in the upland surrounding Wetland CD includes Douglas fir (Pseudotsuga Menziesii UPL), big-leaf maple (Acer macrophyllum, FACU), vine maple (Acer circinatum FACU+), and black cottonwood (Populus balsamifera ssp. trichocarpa, FAC).- Also present are red elderberry (Sambucus racemosa, FACU), common snowberry (Symphoricarpos albus var. laevigatus, FACU), Himalayan blackberry(Rubus procerus, FACU), and sword fern (Polystichum munitum, FACU). Wetland CD has low potential for floodwater attenuation and floodwater detention and retention because of its sloping topography. The potential for sediment stabilization is moderate to low because of the vegetation on the banks. There are areas where erosion is obvious,especially the narrow ravine that connects the southern portion of the wetland to the northern edge near the Cedar River. Retention and transformation of sediments, nutrients, and toxicants is low under current conditions but could be high if toxicants were present. Moderate internal decomposition and nutrient cycling with high export contribute to the low primary productivity characteristics of the wetland. The steep nature of the topography and the stream access through the wetland insure there is almost no organic accumulation. This wetland has moderate to high invertebrate,amphibian, mammal, and bird habitat potential. Wetland CD's size and location across the river from the Maplewood Golf Course contribute to its moderate aesthetic and recreational value. Cooke Scientific Services March 2,1996 11 Wetland E Wetland E is a 1.2 acre, Category 2, PEM/riparian system located within the Cedar River flood plane. The wetland vegetation consists of giant knotweed (Polygonum sachilinense, FAC), red alder (Alnus rubra, FAC), and salmonberry (Rubus spectabilis, FAC+). The soils are deposits of fine to medium sand (10YR.4/2)with organic streaks found throughout the soil profile. The wetland is situated below the plateau where wetland CD and some upland areas are found. Wetland CD is separated from wetland E by an abrupt break in the topography causing a bank 3 to 5 feet lower at the edge of wetland E. The stream which flows through wetlands AB and CD may overflow into wetland E during high flow storm events. Field investigations conducted by RH2 Engineers in November, December (1995), January, and February (1996) during and following periods of heavy precipitation and regional flooding found no evidence of stream overflow into wetland E. During and after flooding events on the Cedar River in December (1995), January, and February (1996) RH2 investigated wetland E for flood plain functions. Only during the February 3-9 event (estimated as a 25- 30 year event, RH2 pers comm.) did floodwaters overflow onto parts of wetland E. Specifically, flood waters flowed up into tow natural conveyance channels which are dry during flooding events estimated at less than 25 year events.Other than these observations,there is no apparent hydrologic connection between the upper wetlands and this River adjacent wetland. Wetland E has moderate potential for floodwater attenuation and floodwater detention and retention because of its flat topography adjacent to the Cedar River. There are many areas where sediment accumulation is obvious which indicates floodwater retention. The potential for sediment stabilization is moderate to low depending on the time of year, because of the thickness of the giant knotweeds growing throughout the area. Giant knotweed will help stabilize the sediments during the growing season but afford less erosion control during the winter when much of the rootstock dies back. There are few or no sedges or grasses in this area to hold the surface sediments in place. Erosion is obvious in some areas. Retention and transformation of sediments, nutrients, and toxicants is low because of the character of the plant community. Moderate internal decomposition and nutrient cycling with high export contribute to the low primary productivity characteristics of the wetland. The flat topography and the adjacency of the wetland to the river insure there is almost no organic accumulation. Most is exported during high volume storm events. This wetland has moderate to high invertebrate and amphibian, and moderate to low mammal and bird habitat potential. Wetland E's size and location across the river from the Maplewood Golf Course contribute to its moderate to low aesthetic and recreational value. Cooke Scientific Services March 2,1996 12 Table 1 Summary of Wetland Characteristics Wetland Class Buffer Acres Functions • moderate to low hydrologic support AB 2 50 ft. • low water quality improvement • moderate to low habitat support • moderate to low biological support • low socio-economic function • moderate to low hydrologic support CD 2 50 ft. • low water quality • moderate to low habitat support • moderate to low biological support • low socio-economic function • moderate to high hydrologic support E 2 50 feet • moderate to high erosion control from the • moderate to low water quality improvement Kedge • low to high wildlife habitat support • moderate to low biological support • low socio-economic function Data sheets for the functional evaluation can be found in Appendix C. Cooke Scientific Services March 2,1996 13 DISCLAIMER Cooke Scientific Services (CSS) has prepared this report for use by the RH2, the City of Renton, and project consultants. In preparing this report CSS has used the site information supplied by RH2 Engineers and referenced herein. The results and conclusions of this report represent the professional opinions of CSS. Findings reported herein are based on the following: information gathered in the field at the time of the investigations by CSS staff; information provided by RH2 Engineers; the understanding of CSS of federal, state, and local regulations governing wetlands; and examination of public domain information concerning the proposed site. The wetland boundaries, site hydrology, wetland classifications, and functions and values discussed herein are the best professional opinion of CSS, based on the circumstances and site conditions at the time of the study. Work performed conforms to accepted standards in the field for routine delineations according to the U.S. Army Corps of Engineers Wetlands Delineation Manual(Environmental Laboratory,1987). The determination of the jurisdictional wetland boundaries pertinent to Section 404 of the Clean Water Act, however, is the responsibility of the Seattle District of the U.S. Army Corps of Engineers. Many different regulatory agencies may require review of final site development plans that could affect zoning, water quality, and/or habitat functions of the lands in question. Thus, the findings and conclusions contained in this report should be reviewed by the appropriate regulatory agencies prior to any detailed site planning and/or construction activities. Cooke Scientific Services March 2,1996 14 REFERENCES Adamus, P. R., E. J. Clairain, Jr., R. D. Smith, and R. E. Young. 1987. Wetland evaluation technique (WET);Volume II: methodology. Operational Draft Technical Report Y-87. U.S. Army Engineer Waterways Experimental Station. Vicksburg, Mississippi. Cooke, S. S. 1995. Wetland and buffer functions, A semi-quantitative assessment methodology. Seattle,Washington, Cooke Scientific Services, . Cowardin, L., V. Carter, F. Golet, and E. LaRoe. 1979. Classification of wetland and deepwater habitats of the United States. U.S. Fish and Wildlife Service, Office of Biological Services, Washington, DC. Publication No. FWS/OBS-79/31. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1, U.S. Army Corps of Engineers Waterways Experimental Station, Vicksburg, Mississippi. Federal Interagency Committee for Wetland Delineation (FICWD). 1989. Federal manual for identifying and delineating jurisdictional wetlands. U.S. Army Corps of Engineers, U.S. Environmental Protection Agency, U.S. Fish and Wildlife Service, USDA Soil Conservation Service,Washington,DC. Cooperative technical publication. Hickman, J.C. (Editor) 1995. The Jepson Manual. Higher Plants of California. Berkeley, Los Angeles, California, University of California Press. Hitchcock, C. L. and A. Cronquist. 1976. Flora of the Pacific Northwest. Seattle, Washington, University of Washington Press. King County. 1990. King County Wetlands. Bellevue, Washington, Environmental Division, King County Building and Land Development. King County.1994. King County Sensitive Areas Ordinance. King County Building and Land Development,Bellevue,Washington. Kollmorgen Corporation. 1988. Munsell soil color charts. Baltimore,Maryland. McAuliffe, Chris, 1993. Personal communication, staff U.S. Army Corps of Engineers, Seattle district. Mitsch,W.J., and J. Gosselink. 1986. Wetlands. Van Nostrand Reinhold Co., Inc. Reed, P. B. 1988. National list of species that occur in wetlands: Northwest—Region 9. U.S. Fish and Wildlife Service. Welut 86/WIZ. 47. Reed, P. B. 1993. Supplement to the national List of Species that occur in wetlands: Northwest-Region 9.US Fish and Wildlife Service. Renton, City of. 1992. Ordinance 4346. Renton, Washington. Renton, City of. 1994. Ordinance 4478. Renton,Washington. Cooke Scientific Services March 2,1996 15 Renton, City of. 1995. Ordinance 4538. Renton, Washington. Reppert, R., W. Sigelo, E. Stakhiv, L. Messman, C. Meyers. 1979. Wetland values. • Concepts and methods for wetlands evaluation. Virginia,U.S. Army Corps of Engineers, Institute for Water Resources. RH2 Engineers, 1996. Personal communication,Redmond Washington. Sather,J. H., and R.D. Smith. 1984. An overview of major wetland functional values. US Fish and Wildlife Service. FWS/OBS-84/18. Snyder, D. E.,P. S. Gale, and R.F. Pringle. 1973. Soil survey of King County area, Washington. National Cooperative Soil Survey. U.S. Army Corps of Engineers (Corps). 1992. Guidance letter. U.S. Department of Agriculture (USDA). 1985. Hydric soils of the state of Washington. Washington D.C., Soil Conservation Service. U.S. Department of Agriculture (USDA). 1991. Hydric soils of the United States. Soil Conservation Service, in cooperation with the National Technical Committee for Hydric Soils. Miscellaneous Publication#1491. U.S. Fish and Wildlife Service (USFWS). 1985. Endangered and threatened wildlife and plants. 50 CFR 17.11 and 17.12. Washington, D.C., U.S. Department of the Interior, Fish and Wildlife Service. U.S. Fish and Wildlife Service (USFWS). 1987. National Wetland Inventory Map—Renton Quadrangle. Washington Natural Heritage Program. 1991. Endangered, threatened, and sensitive vascular plants of Washington. Olympia,Washington,Department of Natural Resources. Cooke Scientific Services March 2,1996 16 Appendices Appendix A: Plant Species List Indicator Status Common Name Latin Name Trees FACU big-leaf maple Acer macrophyllum FAC red alder Alnus rubra FAC black cottonwood Populus balsamifera ssp. trichocarpa NI Douglas fir Pseudotsuga menziesii FAC western red cedar Thuja plicata FACU- western hemlock Tsuga heterophylla Shrubs FAC- vine maple Acer circinatum NI scotch broom Cytisus scoparius FAC+ devil's club Oplopanax horridus FACU Himalaya blackberry Rubus procerus FAC+ salmonberry Rubus spectabilis var. spectabilis FACU red elderberry Sambucus racemosa ssp.pubens FACU common snowberry Symphoricarpos albus var. Iaevigatus facu red huckleberry Vaccinium parvifolium Herbs OBL different leaved water- Callitriche heterophylla chickweed FAW- largeleaf avens Geum macrophyllum FAC miner's lettuce Montia siberica OBL water-parsley Oenanthe sarmentosa FAC giant knotweed Polygonum sachalinense FACW creeping buttercup Ranunuculus repens var. repens FAC- three-leaf foamflower Tiarella trifoliata FAC piggyback-plant Tolmiea menziesii FAC+ stinging nettle Utica dioica ssp.gracilis var. lyallii Grasses FAC slender bentgrass Agrostis capillaris FACW+ tall mannagrass Glyceria elata FACW reed canarygrass Phalaris arundinacea Sedges FACU Dewey sedge Carex deweyana var. deweyana Ferns FAC lady fern Athyrium filix femina var. cyclosorum NI licorice fern Polypodium glycyrrhiza FACU spreading wood fern Dryopteris expansa FACU sword fern Polystichum munitum . C 1rA FORM Plot # . ' 4_6 ROUTINE ON-SITE DETERMINATION METHOD Cowardin: Project/Site: %,/j ' nJ re t ik) Date: '/ /7„ Q� ' ' Initials: 1-'f g r Stale: NA County: Norm Conds?/Disturbince?: 1r 11/ Approximate size (acres): < 1 1-2 2-5 > 5 COVER CLASS y ! I • zt S25-�t 5 5:7595-.+% 3-25-50-.37.5 6->95-+97.5 VEGETATION Cover Indicator Cover Indicator Dominant Plant Species class status Stratum Dominant Plant Species class status Stratum 1. J (,Mpp MOW, F✓ I-} 11 r ND AveA 1 u j s 2. IIl cyli ri l i" 12. / / � �(/ f r'>`J� 14 4. // of X f S 14. !eel, vv��+ice._ � f.,.`� % Fria{ T 6- f j 6, �A S 16.`' • f 8- �.' f frn, ild i f%flGU 0 18. 9. 3 19. 10:.(1..)4\,y C 4 iM 0 , raw 0. 20. OBL, FACW, and/or FAC .I 00 =H (0(0 = S (oT = T g =TOTAI Hydrophytic vegetation? Yes No Notes: 1;J aQ } SOIL Series/Phase: (from SCS maps) I Histosol? v Q Histic epipedon? ° Mottle (Color) JoT 1 Horizon Soil Depth t rr Profile Matrix color P. iJ Texture ^I I.• Alvi Other hydric soil Indicators: ()911-(J ft 1 l Hydric soil? es No 1 Notes: HYDROLOGY 7- Inundated? Yes No Surtace water depth: c:)11 Saturated? Yes No Depth to free-standing water in pit/soil probe hole: List other evidence of surface inundation or soil saturation: „rig Ll- r6 - / 5A ati7 Wetland hydrology? dIP No Notes: • JURISDICTIONAL+ � ETERMI01 kd ANDR RATIONALE Wetland?Welland? No Y ri1 J 'V�19r JNtdi 1,42 Rationale for j •ictional decision: wpuISCuFOtu S0ArArORA!93 • ti,,in t 4) C ,rA FORM Plot #: -% - ROUTINE ON-SITE DETERMINATION METHOD Cowardin: -. ' Project/Site: o-ky h,p__( . ice'!. fi.-1-cr- Date: ;r G ; i nitials: - - Slate: Courtly: ;< \.1 Norm Conds?/Disturbance?: C / W Approximate size (acres): < 1 1-2 2-5 > 5 `� COVER CLASS 1.0-5-.2.5 4.50-75-.62.5 3_zsso-.37.s 6=7,e25.97.5 • VEGETATION Cover Indicator Cover Indicator Dominant Plant Species class /st_aatus Stratum Dominant Plant Species class status Stratum 1. t'P10 /1�lIr- 2— V17C'iL_- 1tr 11. 1,4-'7„ 4 f 1 I �-(- 42. l( r �a,_ 2— FAO 74 12. 1pq\L (�I`t C I 4 A 1J_ 3. 6-9L; - ./4'7/?-< I r-G1r_ 1 13. '(tA[!((((((e,I t Q.Vre_ ‘ t u, rq 4. f\j l 04 '71419l1 Z- prL 11- 14 ; . i4C-e-r C il;r L. 1'.tar— 5. V � n , } 15. Alit llt r k''r ,3 .Fitt(.. 1 s. 17 A!o uc S e_. 3 si �' Sf+ 16. 1 `� WI ii1 r 2-- kt t %+ 7. '� �f 31 - I pc 1_r 17. B. Gt .1./.S C_I 3 — Rrr,► 18. 0-Pt)Gk. J al✓'4'1 , I 06 L 9- Tz.v b t t /,YJ L \ fOAA S r 19. 1f 4• CC_ railV 1 f C fit - 10. -E .n 4f, - ‘ CAL i} 2°- 12Ikt aY \ FAtv /4- 0,0 OBI_ FACW. and/or FAC b H (0 0 = S too = T __= TOTAI Hydrophytic vegetation? Y{es ,"'' ,,No Notes: l — M(ptt ( cU1 'Sept` 4-"'Q, • \ SOIL Series/Phase: (from SCS maps) Histosol? 1121 Histic eppedon? NO Mottle /I I-; (Color) Horizon A I"al i // Soil Depth 1`1 -1. j 'r 70--tAf, 01409 CI r-Ae Sal b Profile Matrix color :n t I 9 7 Texture 1 i 12- _-t. 1 .n,�1.-A /G({T 3J f/ 3/ • Other hydric soil indicators: Hydric soil? OP No 6UI1:r1, E riteickst4VV Notes: • HYDROLOGY Inundated? Yes ✓ No Surface water depth: 7- p) / Saturated? Yes , / No Depth to free-standing water in pit/soil probe hole: List other evidence of surfacevvur inundation or soil saturation: Wetland hydrology?. No • Notes: JURISDICTIONAL 4ETERMINATION AND RATIONALE �p Wetland? f Yes No •J ci I kg tl `T 473(Q� V Rationale for 1 ictional decision: t y WPWIS POnIAs`nATAFORu 93 R. C ,TA FORM Plot# 'tIM-F Ci ROUTINE ON-SITE DETERMINATION METHOD Cowardin_ Project/Site: ,rV I ni t7f 6-(1 ' L • Date: + J 1 . 1 v a !Initials: TT /SSC State: tA4 County: i,(/W y Approximate size (acres): < 1 1-2 K 2-5 > 5 Norm Conds?/Disturbance: \ / ` U /4 f [�+ Fr!ai i1a COVER CLASS r 2t"5-25 2is 5=is95_+e5'S VEGETATION J-25-50-.37.5 6-v95--�97.5 Cover Indicator Cover Indicator Dominant Plant Species class status Stratum Dominant Plant Species class status Stratum 1. MVO IM Sa 1. 4 I la I' I-1 1 f. 2. .4 I r 1J yc r I A ilk, 512. 3. t A`,CS C 7i 7. (tit f S 13. r , 4. 14. 5. 15. 6. 16. 7. 17. 8. 18. 9. 19. 10. 20. ,c� %OBL,FACW, and/or FAC QQ_= H 1 Od = S = T '00 =TOTAL Hydrophytic vegetation? 0 No Notes: SOIL Series/Phase: (from SCS maps) O `0- alif Sat — wt.tp ffy Say Mottle (Color) Histosol? .j4 J Histic epipedon? Horizon 0 /S]r r Soil Depth to Profile Matrix color O S Texture 4 6 Other hydric so' •icators: S-�4A'WI q 6 ail r6 ` r 6t . ry,'�a*1,1 4 Hydric soil? 9 No V Notes: HYDROLOGY -. Inundated? Yes 0 Surface water depth: Saturated? Yes rlo) Depth to free-standing water in pit/soil probe hole: 7 List other evidence of surface inundation or soil saturation: 5 t...auk/9 4Y41b'pf f y 4 Wetland hydrology? '1 No f� A� / { Notes: �/ C 41 .701411 k' 9\tit-r"tm\AA ON JURISDICTIONAL DETERMINATION��1111 AND RATIONALE Wetland? 0 No - f ,VV// Rationale for) sdictional decision: .sV W IScv ORMS`PA rAFOnM 93 Wetland and Buff( ' inctions and Semi-quantitative Performai•----- 'Assessment Wetland# Aft? PRA•'-cil plYts klxvz_ Staff cS.2.ClkiirDate ih-- )g Location S T R • . . . - • • • —_i , • . • • • Criteria .• ..• • — Function ' •I Group 1 1 pt Group 2 2 Os Group 3 : pis . ..._... ! ••L -- . • _ . . . Flood/ .. — <5 acres ' 7/412e 5-10 acres size>10 acres _ isokled depression within stream flood plain 'within river flood plain • Ste- rm Water • <10%fOltexed cover* . : .17,e----:-I 0-30%forested cover -'•.>36%Iciosted cover . , Control - unconstrained oulet ' -- semi-constrained Otatt . • _Z:;;-ulvenibennect outlet ,- -located n low3r 1/3 of the draklae ' - ' located ki mickle 1/3 of the dainap -•'located h upPer-1/3 of the&AI 3ge pokits j._ ' , • . , • % . . . .. ,. . • \ "''.... , , .. . . _ . . . — 138SA Flow/ :,. . — :S/2-q .,55 acres sizes-to acres . ' •.,.Size>10 acres -,': ' - -• • -• isolated pond,bog,deciession . _.‘,../iiverile or lakeshore wetland -....headioater wedand Ground Water — ---!edited In Wier 1/3()title drainage .. . located in rniddte lA of the dralnag3 "'poled in rimer 1A ot lie drair:ige• Support „2 cccasionallytoodect hi0 flow-sensAre poixrIry.on _ -:,:feldein• no lbw-senskivefneeded populations on- low flow-senskive populatians on- ske or downstream h by high-• .......site or downstrean . - .mineable strata -- (max 15) "....: -- . , . — . .._,. _•, ' ../"" Erosion/ .....,,, , _ sMse 9rasstetisor no vO 9 along. .sPame wood or ve9 along of-IWM - dense wood or veg alOng ow-.%4 . _ AfEnivm • • .wetland extends 30-60 m kern .. .. Shoreline _Z Volei6fld extends<30 m from : `-' 014WM Wetland attends>200 m fron- . ..'. I protection,_........_._ oiivfm • .... _ ., _ moderately developed stiorekrienr _ _.. OHWl#A .. . ..., . ,•'.... . ..,, .• . — _hip);deValoped Shoierine or .,. .Subcatohment Z iaide'vebped sii llne or sutcalchment (ma(9) :. . ->i.-.-,.-.,?o- h,,,!•.• • . . water Quaky . .4apid tow trough sba .•-- -- . - 14-17.rriciierate tow ttrot41 as .. 1 z:_---,stow ftw 0=0)she •- - <50%veg cover -r.- - . ;),(1-80%cover -.-:> %veg cover Improvement.: •1 ;undeveloped basil •--- v clownstroan item basin s 50% .. _ - •-s..:downstream from basin>50q points i.: /1 holds<25%overland runoff tads 25-50%overland iunott .6holds>50%ovenand runoff I i . — . N/A=Not Applicable,N/1=No information available • • .. .- .. ... -.• . . •-.- . ," •• .... ..-_- . ...-•._ . • .. - . Dominant Vegetation: • Wildlife: •.- ...: ,, sz_. r6-1 ikdr k( A fig • • • . . . . • • • •• . Wetland and Buff( nctions and Semi-quantitative Performar. ,ssessment Wetland#-: :ai T Q c►'1 `TtI rl^t staff 3SCIlArir Date I I2-3/q/o . Location S T R . . • . I • Criteria — I, Function Groin 1 1 pt Group 2 2 pts Group 3 : pis _ Flood/ — sae<5 acres • I ✓tze 5-10 aces _ size>1 o acres : i • r 1Af..4,... — IS0I ed n within Stream flood plain _ within river flood plain S�v++, ..erica • _ <10%forested cover �10-30%forested cover — ?30%forested cover • Control • •... - stern-consrained outlet • Culvenibenned octet • ,./locatedinbwer13ofthe! lor- Adirn 1l=33ofedra •• - •ford intmir1?3of the dr 30e ( (mP .. . Base Flow/ — sae<5 acres 5-10 eats _ size>1 o aces _ Ground Water — pond'�' .• �rh+erine or lai®sfrore wetland _ headwater wetland In lower 1A of the drainage _,_Jocated in middle 1A of the drainage — located in upper 1R of the drat.3gt• • no lore-senstivs populations on-- tow tbw-senstivepo tions on- - stet or downstream!i by high:•". sue or down Stream d05hS1St;8a<rl -. P a i .(max 15) --' _ - Erosion/ - — . f or no ✓ 9 wood or veg along OHWM _ dense wood or veg along Oi-[i 11A OHW;vf v extends 30-60 m from • _ Shoreline • . wetland extends<30 m from OHWM - ^•" wetland extends>200 m Iran -:..- - Protection .. OHWM ; . — modadevo ped shoreline Cr __ .. — ,higrly dsveloped s,«e*a • subrately c2�tmeat Munde�ebped shoreline—Or . p subcafchmert (max9) -- - .. - •- - - :1 Water Quaty ✓ram low ttrOull sine -.- _ low ttxnuGt sib _•slow tow through s;e i — <50%veg cover cover — >80%.veg cover Improvement . `-_unclmetped basin _ lownsinaam torn basin S 50% . _ d�{{o�, .s�team from bash>504 _'.holds<25%overland"nnoff" _' h0ktS 25-50%overland runoff lidos>550%overland runoff 0 ( v .. :... . . :i N/A=Not Applicable,N/I=No information available . Dominant Vegetation_ Wildlife: Wetland and suffer Ictions and Semi-quantitative Performant ;>sessment Wetland# ?4)1;1 ►vvtr staff sscitiotirr Date //Z3(�,4i . Location S T R u . • ' Criteria .. Function Group 1 1 pt Group 2 2 pts Group 3 : pis g size`5 acres i slze 5-10 acres ' >10 acres Flood/ `;_- _ �, isolated • in stream flood plain within river flood plain Storm Water 10 fottesied cover 10-30%foss cover _ >30%forested cover • Control Dural _ serrii-constrained ouflst _" _ -.auermed o et located in tower 1/3of the drainage - ;'. friCated in middle 1A of the drainage - �Ue'located in upper 1/3 of the drat age (max 15) sae<5 acres i� 5-10 ac e$ size>10 acres Grour�Water" — pond,bog,depression __ !Werine or let a wetland _ `headwater weld ,�foc aced in bw�er 1l3 of drainage _'located in mi le 113 of the drainage _ batted in upper 1A of the drain:agf Support _ seldom modal 1,z' na4rtOoded _ ham,fb -ter ..on .. _ no*low-sensssive ins on- itrnx flow-lens ive populates on- site or downstream in by tight • :: s.te or downstream site or doh permeable strata ... points _ IErosion/ -_y " '�Cr no veg alatg �speree wood or veg a OHM — d :mod or veg a�OHl•RA 'OHWM 1/wetland mdends 30-60 m from 1, Shoreline _ wedand extends<30 m from HWM wetla extends>200 m Iron Protection _ W OHM moderately developed shoserrte or _ nd OHWM_ _. Shoreline . _ t highly developed Shore or... subc meat — undeveloped shom1ne or Polls `�Lr " . 5„bcatCtYner ;> ` - '_ -- (max9) - .:..-- ... ,.. ,. _ :. ,.,,-. ._ _. .. - -. ,... -•Water — :rapid tow tf rou tt Ste - . : • moftmte low through site slow flow lhrr:SY•r ste _ <50%veg Dover 80%cove( =>80 46 veg Cover i Improvement -- AZ.downstream tom basin S 5046 :: 'downstream,front basin>504 j ,,; 4 -. developed :..: — developed ' poir s.O `:.., _: . ;.;holds<25%overland runoff Z holds 25-50%overland runoff — .holds>50 46 overland runoff 1 (max 12) -a„N . -., .. :..;-=...- . . ... - NIA=Not Appficable, N/I=No gnftrniation available . Dominant Vag tation: Wildlife: - Wetland and Buffer tctions and Semi-quantitative Performant .-Assessment Wetland# !lt 'Q r l u I t'YN2 Staff C Arrr Date lie--3l9(a • - • Location S T R. • =—r Criteria — IFunction - Group 1 1 pi Group 2 2 pis. Group 3 : pis , •Flood! s¢9<5 aces _ e 5-10 acres — size>10 acres _ isolated depression within stream flood plain _ within river flood plain r Stc n Waiei <10%Imaged cover • �0-30%forested cover ' _ .>30%forested cover _ Control, Onconstainedoutlet - _ seml-consirained outlet • J,Z—culventermed outlet located n lower 1/3 of the drainage -- bailed n nee 1/3 of the drams _-•boated in upper 1/C3 of the drat 3ge Ii points • • • .- 1 — Ba Row/ - —✓sae<5 acres size 5-10 acres size>10 acres isolated pond' 'depressiondepression . __NL/riverine or talaasflore wetland _ -headwater wetiaYnd Ground Water ✓ boated in laws 1/3 of the drainage located In rniacte 1/3 of the drainage — located in upper 1/3 of the&air:age Support blooded AL nRY — high flow-sensaive poixrWorr.on•: tow-senstive populations on- _ low flow-senstiiive popuhat+ons on- sae or downstream In by nigh! She ordownstream -- . - . . - .w _ sty ------permeatria . p er— - � - - (max 15)... .. _ • Erosion! . - 9 Cr no Yeg 9 — sP wood or ves aim*OHWM _ dense wood or veg atcxig°H;.'" wetland expends 30-50 m from _ifWetland eodends<30 m from •:- •.: " O weld extends>200 m iron Protection. _ .. _ OHWM — moderatelirdeveloped shosaline or . OHM W - — -higtdy developed sttoreBne or - . sun c rent 1undevebped shorate or.. points ., .subcatChrient - subcaachment - (max 8) .. . ..,, r>Y - . . _ . - -...,:, .%1- • Water ✓ tldw> s?-r l xate tbslrttuCt.'gh s _•slow ft ,�,•^'; QtJaiity _<50%veg cover - ,Z 80%cover - >80%veg cover ; Improvement , : + =undeveloped basin - - .• - dodownstream!ram basin S 50% - {-downstream from basin>50s Ij • ports : . Zhoids<25%overland runoff — holds 25-50%overland nlnoff .- •_ holdsd s>50%overland r nolt N/A=Not Applicable, Nil=No information available . .. . Dominant Vegetat;tin: • Wildlife: j O L kQ, (t3 Wetland and Buffs 'notions and Serni-quantitalive Pe formar, `°assessment Wetland# -. aD n >0Y I .-ere.k il\e_ Staff C-I . Date I I /q 19 . Location S T R • - • . - —--I • ( Criteria • • _ I Function Group 1 1 pi Group 2 2 pts Group 3 : pls • Flood/ • size<5 acres ' Ztze 5-10 acres - size>10 acres Stain 'Alta' _ isolated depression .within stream hood plain _ within river flood plain Stain .vases' _ <10%forested cover �10-30%forested cover 1 _ >30%forested cover 1 Control • • • ()Wet . • ' ' ' semi-constrarnod outlet culy tbenned outlet . located nletter1.3of the dalleg9 •leapdinrr>i alitofdredam _ 'toedn!wen1Aof the c poi(max 15)' _._.. ... Base Flow/ — size<5 acres 510 acres — size>10 ores thterine or takeshore wetland • _ headwater wetland - --Ground Water , ' In lower 113 of the damage tt middle 1/3 carte damage — located in upper 1/3 of the drain:Kg Support / d boded occas'fonaa r-tiC 1 — h;tt ki:v-serer p -b-�.our . i JZ no tow-sensitive populations rat- low flow-serve populations on- s e ordowfl tream In by tip • .. site or danatstream s!!s ar dovxtstrsam permeable strata potrtls X. r (max 15)...,. • .. Erosion/ — sparse gasstterbsor no'�along . ✓.. wood orveg along OHWM "' - "dense wood or veg atone OFt(.'MA ' QHWM extends 30-60 m from- '-- .. 1 Shoreline — `wetland e,dends<30 m from OHWM - . •wditand extends>200 m Iron Protection_ _ OHWM — modeta t deue oped s iorefne or — "highly�v+ Fed shoretrte or suDc trment .1 Mundevi bped sho eline or 1 t 1 ,,ment < a,bcatcfxrrent II (max9) :. ._. . - i - • Zracillowtheough site . tow thmugh ste . .. ,sbvu lbta thipug t eke Water Qual�}r — <50%veg paver -.. .. . �—80%CO COW -,:>So%vegcover - improvement . . • ..undeveloped basin . . . 'wwnstream torn basin!s 50% . ...downsVeam from basin>504 • , developed poos�. . -• holds<25%overlandGimoo i ff tmids 25-50%overland nnolf - _.-holds>50%overland runofft N/A=Not Applicable,1N/i=No Rlfatntation=available . Dominant Vegetation: • Wildlife: Wetland and Buffet Motions and Semi-quantitative Performanf f_;sessment ' Wetland# V1 `) 7 i po.IW s-- Staff 41/1— Date 1 I23/f,4 • . • Location S T R _ Criteria . • • Function Group 1 • . • 1 pi G.rooi p`2 2 pts Group 3 : pis , Flood/ —• size<5 acres • s>ze 5-10 acres . size>10 acres • — • .isolated depression _ in stream flood plain j hin river flood plain • Sin t;t Wag'7i 0 9b d cover 10-30%forested Dover ->30%forested cover • Control reed ov et _ se _ ed outlet " ._culvert/banned our. (' located in lower 1/3 of the drainage '"•` loomed in middle 1R of the drainage __" ocaled in upper 1/3 the drain kgf , t points • • (max 15) ....-. Flow! — srzo<5 acres • t��tze 5-10 aaas • _ size>10 acres I `•'' d pond,bog,depression �/rWenne or ial�hore wetland .. Headwater%etland ' Ground Water VioCated in lower 1/3 of the drainage _'boated in middle 1/3 of the drainags _ located io upper 1/3 of ttie draw-agE Support — seldom Mcroded Lz- occ onaQ"►rt ; _ hill piM:wuw:.or-: no Sow-sensitive populations on- lowlbw-sensdive populations on- sae or down in by tight _ site Pr. __-_. _..... .. site or am.--._._ .. permeable strata .._ (mp07 - Erosion/ - ;:spew gasses �Ye orrgalong s a.�dorvegOHwM — dense% orveg OH --,M 1 Shoreline oHw + �vvetland extends3o-60 m from . . I __Iwetland calends<30 m from HWM — wetland extends>200 m iron Protection _ OHWM modeta;elydevebped stnorerrie or ..OHWM-_ — tnigilty devenoped sfloneBne or subcatctrnent . . — unrievebped shoreline ar - subcalchmenn :subca;ohment .. . .. .Water _ 'trough se . -. . •"rr e Sow through st e . , _ sbw tow through se Quality - ' = OYP.t><1P,ttt • <50%vegcover _:=-.�_-- �•. 80%cover -.=>80�civegcover mPr undeveloped basin . . . __ AZ cloy stream from basal 550% •doamstrearri,from bash>50? /developed developed l - pOS_.:: - • folds<25%overland runoff L holds 25-50%overtax runoff •_ netts>50%overland Runoff N/A=Not Applicable,N/l=No infarrfation available - . . Dominant Vegetation: Wildlife: -• - M Wetland and Buffe r_ notions and Semi-quantitative Performan- ssessment Wetland# A/2 QstA-v i 9 1\6341.Y'Q Staff kS.S C%1Date ik3k 0 Location S T R • .. . ---1 ' • . Criteria . Function Group 1 1 pi Group 2 2 pts. Group 3 : pis , ✓size<5 acres a 5-10 ages _ size>10 acres c Flood/ isolated n ✓w 1 n�stream hood plain _within river flood plain J tt m��Ilate . _ <10% cover W d' %forested cover _ >30%forestal cover • Control`' outlet • semi-constrained ails _«iHeniberined outei lec2.mod i lower 1/3 of tie dramas ' _' bcafed in nee 1A of the drams:. _ •located in umor 14 of the drain age points j_ • (max 15) . ....... . . .. . .. .... . ✓�'_. B,Flow/ . — ;size<5 acres size 5-10 aces _ size>10 acres - - - • Ground Water ✓ d pond.bog,depression . . riverine or falreshore wetland -headwater wetland E _ be din lower 1A of tho drainage —. boated in middle 1A otthe d ahem _ toned in upper 1A of the drair.age • Support Fszseklom ffoodsd AZ aocasionallytooded _ high tow-san ve poll rv.on-- • no ,e populations on- _ low tow-sombre populations on- site or downstream in by high! • slut or dowr>stream, .._. . s*e or doveam . -_ .permeable strata .-_... _ F points • . • (max 15) . Erosion/ — sParse grassheibs or no veg along. . �'sparse wood oi-veg along OHWM . — dense wood or veg abng.OHt FM HVVtd wetland exdends 30-60 m from • - wetland. extends<30 m from '.OHWM • wetland eadends>200 m frorr ' ;Protection .__.__.,. ._. .0liw0,t_ : ..._._.. ___ —__" .d share�e or . . .OHWM . . ._._.. ' _ :highly developed she ei ne or ..sc>br tanent I undevbioped shoreline or • • Points to-.. ::; stibca ment • . : subcatchmert (max 9) ... . _; • Wet `� �wlti7x.y'^h s',s _ u moderate btRrfNCL�lt s:s _ sivxffc'xltxC Qua / ., — ::>f30% cover ,,._. <50%veg cover .. . .Z` (90%c»ver ve9 Improvement-:.. .1. :urdeveaped bawl •,•. . downstream tram basin s 50% - -• _t:downstream from basin>504 /-. F aereu�ped �:-.- . developed , • Mints:I.. , - Z holds<25%overland runoff _- holds 25-50%ovedantd runoff _ holds>50%overland njnoit (max 12) .. .. . .. . . N/A=Not Applicable,N/I=No itnfuririation available Dominant Vegetation: • Wildlife: • .. • _ n D Lskur x A(r . ,., Wetland and Suffe '.ictions and Semi-quantitative Performan----:ssessment . , • Wetland If .et) .P-Q-AVI 4\elb-e., Staff bSCANfIr Date I I2-<3)q 1 . Location S T R - . • ..-.•• . . .. , - . ., . • . ' • . Criteria. . . , — Function Group 1 1 pt Group 2 •2 pts Group 3 : pls . Flood/ — size`5 acres . Zslze 5-10 saes • size>10 acres 1 • • _ isolated depression within stream flood plain wthin river flood plain SWAM Iraviata' , <0 4,0 fomsted cover L,.7-10-'30%forested cover • ' >:30%forested cover , ‘ ... . . _ -• Cont • " ...j •iedDUOt erni-constrained outlet ' _ cufventenned outlet • located kt lower 1/3 of the 6-anann •- ki1--tegi. h rrickse 1/3 of the otainaae located in ufpo.r 1/3 of the drat ve ..-. pointsq_ - - • -- •• ' • . . • (mmt 15) .... ._. ....... . . _ .... .. .„ .. . . • - - -. • • . • . . . .. • ...... Base Flow! — <5 acres Jae 5-10 acres ' size>10 acres . • . ____•_.tisolated poni,bog,depession _1„‘liverine crr lakestiore'wetland • headwater wetland _ Ground Water ‘fbdaieu in lower in°Ma drainaaa - __ dinffkt1le1e1ainadrainage _ located in upper 1/3 ot the drair:ag€ • Support ___Aelciam flooded iLoccasionakkoded 110 Ji".t-sensk-ive pw.tigon.,.GI -...,. ,JZ no low-senskive populations on- knwlow-senstive populations on- stle or downstream kt by lip ., . . .. ...„ . . . ....st9 or.dow*3?1 T!.. . . . ....._._... __ _08 X.dow9Stmagi._ .:_ . .permeable stzata .. ... . ,. .. , (max 15) -. . ; - , _ . . ...... . -! — • Erosion/ .„- - .._'03"3 frasOert6 or no veg,abng_,- V . 2 wood or ve9 ai0139 OHM_ . _ "me wood or veg Wong 01:1V•%4 'IP . _liwksl • '. 'wetland extends 30-60 m fawn" -- Shoreline * ---.ivelia:ncl extends<30 m from - • OHWM • . _ .-wetland attends>200 m herr ' -• _ • Protection OHWM i . _ moderatety developed sporelne or . ,OHWM _ .. . . . , . . ,.. . _ Pilitilif dilliel'iii6d shoeor-.- sntatchmert AZ undevebpedstoelhe'or' . • ,... .. .::,,. . . pants .. :.--.... .. .: . - - .... . • • ., (max9) r.*.-- . ,-...... • •-•.7...;-,. ..,i ':: -.. •', ::-7,-.,..,-, . •- ,... .: : .. . :....'-::. '..1.::wbcatment..,...-.. . , - •.:..., - ..-.. ...,:J.. , ,. water Quagty rraild low Itiough she - -- --- •oderate low through sto -- - stow!ow thmt.0 site • •.<50%veg COM --77.3 f- N-80%COW ...-. >80 46.veg over Improvement ::-:=it:mimed basil - •:. •'..- downstream kart basin s 50% .. _ downstream from basin>509 1 -- .. .- - . cfeR3loced : Poirils-I. -!voids<25%overland tonoff A.Alleo"*Peids 25d-50%overlarxf ntnoff '• .holds>50 96 overland runoff i ...--.= -ri N/A=Not Appricabie,N/I=No information available , ! .,,,.. - .,- ,• - -..:.: Dominant Vegetation: . • Wildlife: -. ._ . • . • • •• _. . .., Wetland and Buffer. tions and Semi-quantitative Performanc" 5sessment Wetland# C f261\7* 7 pa pie- Staff c5--SC--70-1— Date /ik;/f.,4 . . . . . . . . . . Location S T R • - . .. . = , . • i . . . - • Criteria •. • . •- Function • Group 1 - - 1 pt Group 2 2 pts Group 3 : pis.., " Flood/ . . —. size'5 acres 14---fze.5-10 acres ' size>10 acres - .-' -• _L.- isolated depression j2ithin stream rood plain ize-Tivithin river flood plain Storm WW6r - 10%forested cover 10-10%forested cover • '' ->30% rested cover _ • " -CUiVE6t control 2Jmonst:ai vied ousetit3 of the age. - serni-constained oudet _ . barrned our.. • located in middle 1/3 of the drainage • • -loafed in upper-1/3 of lie drar 30E points q •.• - -• (max15) ... .. .. . . _ .. ... ..... . , .... . . ...... ...,.... .. .• • - - • • ._ . ..... . ••' . . . , - Base Flow/ ;.,.. — size.4 5 acres ___%-r;;Lr'e -.t0 ease - . Size>10 acres - - • - • isotated pond,bog,depression _L,fiverine or lakesnore wiland . •"•-heackvater v.edand ... - 1 I Ground Water' -->--- t located to lower 1/3 of the drainage locatad kr rraticte 1/3 of tie drainage located in upper 143 of ine cfrair- :KjE . 1 Support — seldom Wooded tz-occasionaty-ltooded _ no Sow-sensitive poixe.ations on- 1,,Zlow llow-mistive populations on- . _ s,te Pr downsvearn.....:._.•.... , ,. .. ske or domslre.garn_ ... - (max 15) . :• . • NM IICAW-Seir13-13W1Acul-"ilit:.illy'... se or downstream ki by lighl.• ; . permeable strata .. • ' • Erosion/ ., . _ ..q...1.--Tw gaSSitratS Or tlA ye0 along .17-spase mod or veg a-bog OHWM _ decree. ...-..46;3d or veg along OH;-IA-1 . . •"*01-1WM 1Zwettandadends 30-63 m from . . Shoreline ._.• wetland extends<30 m torn • JO HWM " %stand extends>200 m frorr -' - _ ' Protection . OHWM 1.4 rpoderately developed shorerrne or . ...0 HWM , . . .. . " _ highly developed slionline or .subcatctrnent . .. ._ undeviebpect shoreline rx .... ' points 1 ..:,,, ,.-.siitcatchment .....z., . , • .- • • (max 9) -,.. ;..• ,,7... - •..,,-•,,;-... . . . — •.. .... ,.water Quay •., — raodLivItta41 ale . .:-.. . 7:trzft.=tow through ale • .. •.. _ .-siovt low Ihrm-1,t site _ <50%veg Cover -...-.,,:. - Z.ffi-80%cover -::•••>80%yea Cover imProvqT19nt . urxleveloped.basin . . :-... AZ.downstream tom basin 5 50% •- .-,''downstreant from basil>50q .• .... points..c ,. ::.. ..,.:_. tious<25(s. ... .. devebpacl• • •• overlaid runoff L holds 25-50%overland runoff • • holds>50 4 overland runoff (1714x.12) . -,:.. - •-..;: . . ..,:.- • =_- •:-.- N/A=Not Applicable,Nil=No iirtuanation available - . , -z• Dominant Vegetation: • Wildlife: . . • • • Figure 3 Soils map. Cooke Scientific Services March 2,.1996 l0 tic(0 INTERFUND TRANSFER Transfer Number: Date: MhR[h 61 �qq� General Description: fb:Mr341 of fas 1OR. SE4A y cauDlTicmAL Lls6 {E2HiT WI) SknetrtiNt Suv..srnteri a.. DCalEt.aPNfa+f 'loth- foiL CEDAR RiV onus( CeasSiu6 k RatL& hiva lt_►a ba, tyot1-1. Department To Be Charged (Transfer Out-From) - this64t3Wee6,16 Description Account Number WO/Function LAmount Rou-wth ui►iS -razia- ' sia.J hn�ti 421'500 018 I596.34.65 55065/5396 3,008 - Department Authorization: N- 3/6/etz • Department To Be Credited (Transfer In - To) Description Account Number WO/Function Amount ravidtOnat Perffrir& 661/9.T3K, V- 00•.00 Siv42Cov 71134/ e mg /6 51e--- 0/ pc/5g /6A61/ 54f Distribution: White: Finance Department Yellow: Department to be Charged Pink: Department to be Credited ., RH2 ENGINEERING Inc. Letter ofTransmittal " la, ° f 8383 158th Avenue NE,Suite 200 Redmond,WA 98052 (206)869-1488 . (800)720-8052 Fax:(206)869-7769 DATE: March 22, 1996 JOB NO.: 194.020 • ATTENTION: Mark Pywell TO: City of Renton RE: Cedar River Crossing Permit Submittals Planning Building &Public Works Department 200 Mill Avenue South Renton, WA 98055 WE ARE SENDING YOU THE FOLLOWING: X Attached Under Separate Cover Via: • Shop Drawings Prints Plans Samples Specifications Copy of Letter Change Order COPIES DATE NO. DESCRIPTION 1 3/18/96 JARPA Application Form Packet DEVELOPMENT PLANNING Crry (-1N MAR 2 1996 ,',ECEVED THESE ARE TRANSMITTED AS CHECKED BELOW: For approval Approved as submitted Resubmit copies for approval For your use Approved as noted Submit copies for distribution As requested Returned for corrections Return corrected prints X For your information For review and comment A For bids due: Prints returned after loan to us REMARKS: Mark: - Attached is a copy of the JARPA Application Form packet that has been submitted to the Army.Corps, State Department of Fisheries and Wildlife and Ecology. Give me call if you have any questions. { COPY TO: SIGNED: Gene Peterson J:\DATA\REN\195-020\PERMITS\Transmittal3toMarkPofJARPApermitsubmittal.doc(3/22/96,2:42 PM) AGENCY USE ONLY • Agency Reference #: • Date Received: SEPA Lead Agency: Other: -JARPA APPLICATION FORM - : - for use in Washington State PLEASE TYPE OR PRINT IN BLUE OR BLACK INK Based on the preceding checklist, I am sending copies of this application to the following: (check all that apply) ® Local Government: for shoreline tig Substantial Development 0 Conditional Use 0 Variance ❑ Exemption; or 0 Floodplain Management 0 Critical Areas Ordinance © Washington Department of Fish and Wildlife for HPA• • ® Washington Department of Ecology Approval to Allow Temporary Exceedance of Water Quality Standards ® 401 Water Quality Certification Nationwide Permits ® Corps Engineers for Section 404 or Section 10 permit(s) SECTION A-Use for all permits covered by this application. Be sure to also complete Section C (Signature Block) for all permit applications. 1. Applicant City of Renton Planning/Building Public Works Dept. Mailing Address 200 Mill Avenue South Renton, WA 98055 • Work Phone: 06) 277-6210 Home Phone: ( ) Fax Number: E06 ) 235-2541 If an agent is acting for the applicant during the permit process, complete#2&3. 2. Authorized Agent • Mailing Address Work Phone: ( ) Home Phone:- (- ) - Fax Number: ( ) 3. Designation of Authorized Agent, if applicable: I hereby designate to act as my agent in matters related to this application for permit(s). I understand that if a Federal permit is issued,I must sign the permit. 4 )UL..- �AfOuR- 3/18/96 Signature of Applicant WKKEQ 6146Ntex. cry of 'QtsN'b4 Date 4. Relationship of applicant to property: 0 Owner 0 Purchaser 0 Lessee 0 Other•( - ) 5. Name, address, and phone number of property owner(s); if other than applicant • Application Page 1 of 5 i • 6. Location where proposed activity exists or will occur. Waterbody Cedar River DNR Stream Type(if known) 1 Street Address Approximately the 4000 Tributary of I ake Wachi ngi-• nn Block of Maple Valley Highway Legal Description: 212305-9069 City, County, State, Zip.Code • Tax Parcel No.: NE* 21 23N SE ' City-of' Renton;. Ki ng County, WA 98055 '/• ''A Section Township Range • • • • 7. Describe the current use of.the property, and structures existing on the property. If any portion of the proposed activity is already completed on this property, indicate month and year of completion. • Undeveloped City Park property. No formal public access. Site is primarily • forested • iI • . Is the property agricultural land? 0 Yes ❑ No Are you a USDA program participant? 0 Yes ❑ No • - • 8. Describe the proposed activity, and the activity's purpose. Include expected water quality and fish impacts, and proposed • actions to reduce the duration and severity of those impacts and provide proper protection for fish life. Complete plans and specifications should be provided for all work waterward of the Ordinary High Water Mark or Line, including types of equipment to be used, and for all work if applying for a shoreline permit. If additional space is needed, please attach a separate sheet. 'Attached • • Preparation of drawings: See Appendix A- sample drawings and checklist for completing the drawings. One set of . original or good quality reproducible drawings must be attached. NOTE: Applicants are encouraged to submit photographs of the project site, but these do not substitute for drawings. THE CORPS OF ENGINEERS REQUIRES DRAWINGS ON 8-1/2 X 11 INCH SHEETS. Larger drawings may be required by other agencies. • • Application Page 2 of 5 • 9.' Proposed Starting Date: Late July, 1.996 s Estimated duration of activity: In River Work: 1 Week Will the project be constructed in stages? ® Yes 0 No 10. Will any structures be placed: a. waterward of the Ordinary High Water Mark or Line for fresh or tidal waters? ® Yes 0 No b. waterward of Mean High Water Line in tidal waters? 0 Yes ® No 11. Will fill material(rock, fill,bulkhead, pilings or other material) be placed waterward of Ordinary High Water Mark or Line for fresh or tidal waters? cubic yards of El y repiacea No gravels a. If"yes," in fresh water indicate volume in cubic yards: 600 for utility pipes and fish weir b. If"yes," in tidal waters, indicate volume in cubic yards waterward of the line of mean higher high. foundation water: - 12. Will material be placed in wetlands? k7 Yes 0 No If yes, impacted area: 0.60 (acres) If yes: a. Has a delineation been completed? 0 Yes 0 No (If yes, please submit with application.) b. Type and composition of fill material (e.g., sand, etc.): Somg gravel . p ti ve soils repl aced c. Material source: Materials excavated during project; on site as possible. d. List all soil series (type of soil)located at.the project site, &indicate if they are on the county's list of hydric soils: Soils information can be obtained from the Natural Resources Conservation Service (NRCS), formerly Soil Conservation Service (sCs). Alderwood and Ki tsap Soils, very steep Alderwood gravelly sandy loam -6 to 15% slope These soils are described as non-hydric. 13. Will proposed activity cause flooding or draining of wetlands? El Yes 0 No if yes, impacted area: _ 0,2Q _(acres) 14. Will excavation or dredging be required in water or wetlands? in n river 0 Yes 0 No If yes, volume: (cubic yards) soon in wetlands area • a Composition of material removed: River= gravel ,cobbles, sand wetlands= sand, gravel b. Disposal site for excavated material: Most materials will be used on site for restoration c. Method of dredging: Backhoe 15. List other applications, approvals, or certifications from other Federal, state or local agencies for any structures, construction, discharges, or other activities described in the application(i.e., preliminary plat approval, health district approval, building permit, SEPA review, FERC license, Forest Practices Application, etc.) Also indicate whether work has been completed and indicate all existing work on drawings. Date of Date Completed? Type of Approval Issuing Aeencv Identification No. Application Approved Yes or No SEPA Renton 3/4/96 No Subs. Dev. Shoreline Renton 3/4/96 No Critical Areas Renton 3/4/96 No • Cond. Use Renton 3/4/96 No SEPA Lead Agency: City of Renton SEPA Decision Date: • Application Page 3 of 5 • ► • 16. Has any agency denied approval for the activity described herein or for any activity directly related to the activity described herein? 0 Yes ® No If yes, explain: SECTION B-Use for Shoreline&Corps of Engineers permits only: 17. Total cost of Project. This means the fair market value of the project, including materials, labor, machine rentals, etc. $1,500,000 • 18. Local government w/jurisdiction: City of Renton South Side-Conservancy • Resource Shoreline Environment designation: North Side -Urban Zoning designation: Conservation 19. For corps permits, provide names, addresses, and telephone numbers of adjoining property owners, lessees, etc., City of Renton 200 Mill Avenue S Renton, 98055 277-6210 Seattle Water Dist. 710 2nd Avenue Seattle, 98104 684-4151 • King County Parks 2040 84th SE Mercer Is. , 98040 296-4232 PLEASE NOTE: Shoreline management compliance may require additional notice— consult your local government. SECTION C -Complete for any permit covered by this application 20. Application is hereby made for a permit or permits to authorize the activities described herein. I certify that I am familiar with the information contained in this application,and that to the best of my knowledge and belief, such information is true, complete, and accurate. I further certify that I possess the authority to undertake the proposed activities. I hereby grant to the agencies to which this application is made, the right to enter the above-described location to inspect the proposed or completed work. IS0Gt" 3-18-96 Signature of Applicant or Authorized Agent(REQUIRED) Date • Signature of Landowner(REQUIRED if other than applicant) Date This application must be signed by the applicant. If an authorized agent is to be designated, the applicant must also sign at Item#3. • . 18 U.S.0 §1001 provides that: Whoever,in any manner within the jurisdiction of any department or agency of the United States knowingly falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious, or fraudulent statements or representations or makes or uses any false writing or document knowing same to contain any false, fictitious, or fraudulent statement or entry, shall be fined not more than$10,000 or imprisoned not more than 5 years or both. • • • Application Page 4 of 5 DO NOT SEND FEDERAL PROCESSING FEE WITH APPLICATION • A:: Nauirt:of:theax�stin :shoreline;:;:(Desenfie:typeof:shorehsic;':�uch:as;anae;:stream,;lake_-agoon;<usarsi;:3>tig,s9vanip,_flbod: ian> ;?'-? floodivay;delta, a of:beach,sucli:as accieuoa• ,erosion, hank,low bank,or;dike,matey al`such as sand,gravel, of bulkheading,if any:);>•:: : ;:;;; :.::::. : >::;::;::i<•; :s:: :::<;: :;.:::::> .•:�:'. ;rock;ziprag�and:extent>andtYPe..:. .:.: ..; ::.... .: . . Cellar•::`R:;ver> floo:d ;.Pl:a:::n and�>F1'oodwa Low: Bank:ori::°'Soutkt:::Side'::of': icier::: .Mi d•:• .....: • . . I ev$ y � .. �1din s:or strucures tGi1I:exceed a beiglf:oft}riit five-.feet abovethe averaade e I ,... ::_::.';indicafe:the::approxunate:location of and.nuaiiier of iesideatial,units;.oxisting slid:poiehtiai that.mill have an oiistrueted view:::::: ::: :::: (V..�.` C:::.If the.. lication involves.a:conditional:use:or.vanance,:set forth:in;fiill..that.portion of the<master program which:;piovides tha .:'the.:, ; the case>of.a.variance;frosty which the;variance.is being sought;::_ C l ty'.o ;;`::Ren ton na1 use:.or !?;::. ...:.:. .: ::>::>:::Po'i>':':.:: : ::�;:.:.>:>. -: •;;.>:.: :.;.:.:;::..<:.;::: :: : >:<.:.:.::.:::1.3:..:::.:1:;:-::.<1 . >::.:33: _;:3 : 2::.:... ..:.... . :...:. . .:.... 1:;.:.: :::.;::.::;.::::.<:::::::..,..•.:: ... • . .... �. ..-�.�......54. ...7..Q. ..7.4. ....7.&......... . ..............:.......:...................... .. ................ ............ ... • These Agencies are Equal Opportunity and Affirmative Action employers. . For special accommodation needs,please contact the appropriate agency from Appendix A. • • • • • • • • • Application Page 5 of 5 Certification of Consistency with the Washington Coastal Zone Management Program • RI: Department of the Army Permit • Application No. Applicant: Section 307(c) of the Coastal Zoos Management Act (CZK) of 1972 as amended by 16 USC 1456(c)(3) requires the applicant for a Federal permit to conduct an . activity affecting land or eater uses in the Washington coastal sone to provide certification that the activity will comply with the Washington Coastal Zone Management Program. The proposed activity described in your permit application is within the 15 coastal counties in Washington, and the following certification is required 'before your application can be processed to Public Notice. Upon receipt of the signed, dated .certification, the Public Notice will be issued and will include the certification statement. The Public Notice will be. forwarded to Washington Department of Ecology for its concurrence or objection. . Please note, the Shoreline Permit determination process, State Environmental Policy Act (SETA) compliance, Water Quality,. and Air Quality review must be completed prior to the Department of Ecology's determination of consistency. CERTIFICATION STATEKE T I certify that, to the best of.sy knowledge and belief, the activity described in the Department of Army .Permit Application dated 3-18-96 complies with the approved Washington Coastal Zone Management Program (CZM), and will be conducted in a manner consistent with that.program. I have started the CZN process: by applying for my shoreline permit or-letter of exemption from • City of Renton (city/county) on ' 3-4-96 (date applied). • cu/ 6h*ui. A do l Gafour -�6U0 b u a our 3 15 96 . Signature of. Applicant • Water Utility FnginPar Date Applicant or Agent Print or Type Name • and Title • Please provide the following. information about your Shorelines Substantial Development Permit. (If you have not yet applied, please explain in the ' 'Remarks" section of this form.) Shorelines Permit . Date applied 3-4-96 Number assigned City/County City of Renton Date approved* Date exempted* *Please provide a copy of the letter announcing the Shorelines decision. Remarks: N?S Torm 1145-4 (Replaces NTS Tors 383) Jun i8 (Rev) w l�ww /wwn • • • 0cY o� Cedar River Utility and Salmon Enhancement Project 1t City of Renton, King County Water Pollution Control Division `" and Seattle Water Department �lvfro in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe JOINT AQUATIC RESOURCE PERMITS APPLICATION FOR HYDRAULIC PROJECT APPROVALS, SHORELINE MANAGEMENT PERMITS, WATER QUALITY CERTIFICATION, APPROVAL FOR EXCEEDANCE OF STANDARDS, AND U.S. ARMY CORPS OF ENGINEERS SECTION 404 PERMIT • Prepared P by RH2 ENGINEERING - March, 1996 • • uRaphaensys1DATA\REM195-020WERMITS\ACOE.DOC 1 of 14 03/18/96 ' UDA'3 � Cedar River Utility and Salmon Enhancement Project • toR + City of Renton, King County Water Pollution Control Division and Seattle Water Department � in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe TABLE OF CONTENTS Project Summary 3 Site Description 3 Construction Elements • 5 Water Quality Impacts,Monitoring,and Management 7 Fish,River,and Wetland Impacts and Management 8 Background 9 j Alternative Methods Considered • 11 Opportunities for Cooperation and Basin Enhancement 13 • • Regulations and Permits Identified 14 Exhibits: • A. Vicinity Map B. Neighborhood Detail Map C. Sensitive Areas Map D. Scope of Work E. Impact Areas F. Temporary Erosion and Sedimentation Control G. Grading Plan H. Fish Weir Foundation Cross Section I. Wetlands Restoration Plan J. Construction Phasing K. Wetland Delineation Report L. Existing Site Conditions (2 pages) M. Example of Groundwater Pond and Channel-Elliot Site Cedar River --� Wtephael\sysMATA RENU95-0201PERMI SIACOE.DOC 2 of 14 03/20/96 • •Uti!Y o Cedar River Utility and Salmon Enhancement Project City of Renton, King County Water Pollution Control Division •R and Seattle Water Department in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe Project Summary The City of Renton, King County Water Pollution Control Division (WPCD), and the City of Seattle all need to cross the Cedar River with new utility pipelines at approximately river mile 3.1. Both Seattle and WPCD have existing pipelines which lie under the Cedar River at this site. WPCD needs to upgrade the existing sewer line in a timely manner since raw sewage discharges into the Cedar River during surcharge events. Most recently, sewage overflowed into the Cedar during the high flow event in early February. The timing for Seattle and Renton is not as critical. An alternatives analysis has identified that open cut trenching across the river is the most feasible, environmentally predictable,and cost effective method to address these utility crossings. Due to previous involvement with developing the Cedar River Basin Plan,project staff were aware of the basin management goals and priorities including the need for additional mainstem anadromous fish refuge and spawning habitat and the critical need for a reliable sockeye salmon brood stock collection system. As such, the project has been conceptually introduced to several jurisdictions and management authorities to identify the potential for cooperative efforts. Coordination with the Washington Department of Fisheries and Wildlife, the Muckleshoot Indian Tribe, King County ' WPCD and Surface Water Management,the Cedar River Watershed Management Council,the City of Renton, and Seattle Water Department has occurred. The result is a proposed project which will: • Combine the needs of three needed major utility projects for the sake of minimizing the cumulative environmental impacts on the Cedar River Basin and saving time and money. • Install a critically needed fish weir foundation into the river at the project site to support the sockeye salmon restoration program in the basin. • Restore and enhance degraded floodplain wetland habitat to function as valuable anadromous fish refuge and/or spawning habitat while maintaining its hydrologic function. In order to meet the critical sockeye brood stock collection needs of fisheries authorities and to address recurring raw sewage overflow into the Cedar River,the project needs to be constructed in the summer of 1996. Fisheries authorities have expressed an urgent need for the weir foundation due to the alarming decline in the sockeye salmon population in the Cedar and Lake Washington system. In addition, the raw sewage overflow has potentially hazardous impacts on the river, Lake Washington, fish,recreation,and the City of Renton water supply. Site Description Location The project is located in Section 21, Township 23 North, Range 5 East, W.M., King County, Washington(Exhibit A). The project will be conducted at approximately river mile 3.1 on the Cedar River, within the City of Renton limits. At this location, the Cedar River is approximately 70 feet • wide during low flow (110 cubic feet per second) with a mean estimated low flow depth of 1.5 feet. The river bed consists predominantly of cobble or smaller size gravels and sand. \\Raphael\sys\DATAVIEN\1950201PERMITSACOEDOC 3 of 14 03/18/96 C.) o Cedar River Utility and Salmon Enhancement Project 7ric + City of Renton, King County Water Pollution Control Division and Seattle Water Department -NTo in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian:Tribe The river is bordered on the north by the Cedar River Trail and on the south by undeveloped property owned by the City of Renton Parks Department. The south side of the site is relatively flat within 100 feet of the river and then slopes up sharply to a more level plateau or steppe. A gravel access road owned and maintained by the Seattle Water Department comes down to the very edge of the river. The project begins at the south side of Maple Valley Highway near the southwest corner of the Maplewood Golf Course (about the 4000 block of the Maple Valley Highway). The proposed water and sewer pipe lines will be installed beneath the Cedar River pedestrian and bicycle trail along abandoned railroad right-of-way. Both pipelines will continue up the slope south of the river,with the sewer line connecting to an existing sewer line about 750 feet south of the river and the water line continuing to the top of the slope to the end of SE Royal Hills Drive. Sensitive Areas Several types of sensitive areas exist on the site including the Cedar River mainstem and riparian floodplain, Category 2 wetlands, a Class 3 stream, and steep slopes on the south side of the river (Exhibit C). • Three main sensitive areas are within the project corridor. 1. Cedar River Mainstem 2: Forested Class 2 riparian floodplain wetland system, spans approximately 100 feet from the river edge inland and parallel on the south side of the river. 3. Forested Class 2 wetland system and Class 3 stream complex located on the south side of the river on a plateau uphill from the riparian floodplain. Water Quality Criteria The state categorizes the Cedar River downstream of the SR-169 overpass (RM 4.1)as Class A. The Class A water quality standards are as follows: • Fecal Coliform 100 colonies per 100 ml • Temperature< 18 C • pH6.5to8.5 • DO> 8.9 mg/1 • Turbidity<5 NTU over background Cedar River Salmonids Five species of salmonids are found in the river and tributaries: sockeye,coho,and chinook salmon, and steelhead and cutthroat trout. The Cedar has been especially productive for sockeye salmon. Sockeye \Vtaphael\sys\DATA\REN\195-020\PERMI S\ACOE.DOC 4 of 14 03/18/96 ti`• oCY o Cedar River Utility and Salmon Enhancement Project + + City of Renton, King County Water Pollution Control Division �,- and Seattle Water Department �'1V'rD in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe Adult migrating sockeye salmon begin entering the Cedar River in the late summer with peak spawning occurring from early October through early to mid-November. Fry outmigration occurs from early February through mid-June. Juvenile sockeye rear in Lake Washington for one to three years. Fall Chinook Adults also enter the river starting in the late summer with spawning occurring from mid-September to mid-December. Fry emerge from the gravels through early March and rear in the river for 2 to 3 months. Juveniles outmigrate from the river between May and July. Coho Adults enter the river in early fall and spawn primarily in tributaries to the Cedar from October through February. Juveniles rear in the tributaries and mainstem for approximately one year before outmigrating between March and June. Steelhead The Cedar is managed for a winter run steelhead fishery. Summer run steelhead are either absent or in low numbers. Adult winter steelhead enter the river between late December and mid-May with a peak around February. Spawning peaks during mid-April to mid-May. Fry emerge in June and July and rear in the river and Lake Washington for one to two years. Juveniles smolt around June and then move to salt water. Cutthroat These salmonids reside in the river,tributaries, and Lake Washington year around. g Construction Elements Components The proposal includes five main underground components (Exhibit D). These are: 1. City of Renton water transmission main; 2. King County Water Pollution Control Division sewer siphon replacement; 3. City of Seattle Eastside Supply Line replacement casing; 4. One empty 16 inch casing to provide for future utility crossings; and 5. Fish Weir foundation installation Cedar Diversion ' At the river crossing,the Cedar River will be diverted into a temporary channel (Exhibits F and G) for about one week while sheet piles are driven and a trench is dug between the sheets. Temporary water- filled bladders will act as dams to divert the flow (upstream) into a diversion channel. Downstream \\Raphael\sys\DATA\RE1 I9S-0201PERMITS\ACOE.DOC 5 of 14 03/18/96 • oti'�Y o Cedar River Utility and Salmon Enhancement Project n City of Renton, King County Water Pollution Control Division • and Seattle Water Department �N'r0 in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe Adult migrating sockeye salmon begin entering the Cedar River in the late summer with peak spawning occurring from early October through early to mid-November. Fry outmigration occurs from early February through mid-June. Juvenile sockeye rear in Lake Washington for one to three years. Fall Chinook Adults also enter the river starting in the late summer with spawning occurring from mid-September to mid-December. Fry emerge from the gravels through early March and rear in the river for 2 to 3 months. Juveniles outmigrate from the river between May and July. Coho Adults enter the river in early fall and spawn primarily in tributaries to the Cedar from October through February. Juveniles rear in the tributaries and mainstem for approximately one year before outmigrating between March and June. Steelhead . The Cedar is managed for a winter run steelhead fishery. Summer run steelhead are either absent or in low numbers. Adult winter steelhead enter the river between late December and mid-May with a peak around February. Spawning peaks during mid-April to mid-May. Fry emerge in June and July and rear in the river and Lake Washington for one to two years. Juveniles smolt around June and then move to salt water. Cutthroat These salmonids reside in the river,tributaries,and Lake Washington year around. Construction Elements Components The proposal includes five main underground components (Exhibit D). These are: 1. City of Renton water transmission main; 2. King County Water Pollution Control Division sewer siphon replacement; 3. City of Seattle Eastside Supply Line replacement casing; 4. One empty 16 inch casing to provide for future utility crossings; and 5. Fish Weir foundation installation Cedar Diversion At the river crossing,the Cedar River will be diverted into a temporary channel (Exhibits F and G) for about one week while sheet piles are driven and a trench is dug between the sheets. Temporary water- filled bladders will act as dams to divert the flow (upstream) into a diversion channel. Downstream Maphaensys\DATANRENU95.0201PERMI SWCOEDOC 5 of 14 03/18/96 • Uti % Cedar River Utility and Salmon Enhancement Project + City of Renton, King County Water Pollution Control Division v,- and Seattle Water Department in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe the bladder will act as boom to prevent backwater flows into the work area and downstream contamination in the event of an accidental spill. Because of,this configuration no work in flowing water will occur. The river crossing trench will be about eleven feet deep and up to about 30 feet wide. The diversion will mimic an existing unstable floodway channel which developed along the south bank after the February 1996 flood event. A diversion channel will be created by modifying the existing unstable dry channel. The modified channel will be designed to convey the summer low flow of the Cedar River (about 125 cubic feet per second) with a velocity of less than six feet per second. The resulting channel will be approximately fifteen feet wide and about three to four feet deep. The channel will be lined and stabilized with geotextile fabric held down by two-man rocks and/or native gravels. The engineered diversion channel will be designed with ability to discharge some flow to another existing natural high flow channel for emergency purposes. This second'channel is not in the floodway but is in the floodplain. It carries water only during high flow events and is dry otherwise. • Class 3 Stream Diversion The Class 3 stream will al so so be diverted during construction of the Renton Water line. It.is anticipated that due to the small size of this stream (if it is flowing at all during the construction period), the stream may be temporarily piped around the construction area while the water main is installed. Diversion approaches will be designed to minimize wetland impacts. Excavation - Approximately 850 cubic yards of material will be excavated from the open trench crossing of the Cedar River. These materials will consist of primarily gravel,cobbles, sands,and silts. Materials will be stockpiled in an upland area adjacent to the river and returned to the river after placement of the structures. t It is anticipated that there will excess materials remaining from the river crossing excavation Most of the excess cobbles and gravel will be used to enhance fish habitat in the riparian floodplain. Any remaining excess material may be hauled off and disposed of at an approved site or used as fill over the top of the Renton waterline. The entire project involves excavation of about 8000 cubic yards in wetlands for the utility trenches, structures, and manholes. All wetland areas crossed with a trench will be restored with native soils over the utility lines. It is possible,but unlikely, that the materials from the river crossing excavation may be suitable for use as pipe-bedding for the water and sewer lines south of the river. If that is the case some of the excavated river bottom material will be used in this manner. If it is not the case, then suitable bedding materials will be hauled in to be placed in the utility trenches for the WPCD siphon and the City of Renton water line. Precise quantities of this bedding materials cannot be determined until material excavated has been evaluated. However, it is possible that up to 2,000 cubic yards of bedding material may be imported and placed in the trenches. Capping and Weir Foundation \\Raphael\sys\DATAIREN\195-0201PERMITMACOE.DOC 6 of 14 03/18/96 • OtiVY_ 0 Cedar River Utility and Salmon Enhancement Project + City of Renton, King County Water Pollution Control Division and Seattle Water Department � ,sirro in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe Pipe sections placed under the river bed will be covered with a protective concrete cap. The concrete cap will be designed to function as a foundation for a salmon collection weir (Exhibit H). The foundation will be used by the Washington Department of Fish and Wildlife and the Muckleshoot Indian Tribe to aid in sockeye salmon restoration. • Water Quality Impacts,Monitoring,and Management • Water Quality Impacts During this project, all water quality criteria are expected to be maintained at background levels except for turbidity. Due to excavation in the river bed and on site, some increase in turbidity is expected for a period of up to one week. Extensive preventive measures will be implemented to minimize turbidity inputs including dewatering the excavation area and pumping turbid groundwater to sedimentation trapping areas. Water Quality Monitoring Continuous water quality monitoring upstream and downstream of the river construction site(RM 3.1) will be conducted before,during,and after the project. The City if Renton established three continuous water quality monitoring stations on the Cedar River in 1994. Continuous hourly data is collected for turbidity, dissolved oxygen,conductivity,water temperature, and depth at RM 2.6,4.2, and 9.2. Background water quality will be evaluated for the two weeks prior to project implementation and used for comparison throughout the project. Sedimentation and Erosion Control Two types of erosion may be associated with this project. First, the open trench crossing of the Cedar River will temporarily disturb sediments in the river. This disturbance will exist for about one week, during which the in-river work area will be temporarily dewatered via diversion of flows. This diversion, in combination with conducting work during the dry season, will substantially minimize sediment movement into the river. Dewatering of the river trench excavation area between the sheetpiles will occur during the installation of the pipeline casings. If this water is turbid it will discharged into the existing WPCD sewer line, a biofiltration swale, and/or sedimentation areas. If the water is not turbid it will be discharged to the surface water system. During construction of the Renton Water line and the WPCD.division sewer line erosion could occur if it rained. Construction of the total project will take about 3 months during which rain is likely to occur. Erosion control methods will include matting, sedimentation fencing, and culverting for construction along the steep slope and through wetlands. Runoff from the unnamed tributary and from the wetlands to be crossed by this project will be diverted and treated consistent with the restoration plan developed and approved as part of this project. Surface water runoff adjacent to the trench excavation areas will be diverted to a sedimentation pond MRapheeltsys\DATA\REN1195-0201PERMITS ACOE.DOC 7 of 14 03/18/96 ' UtiIVY o� Cedar River Utility and Salmon Enhancement Project City of Renton, King County Water Pollution Control Division lagt and Seattle Water Department �wo� in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe or channel and infiltrated. Erosion control measures (i.e.: silt fences, sedimentation ponds, culverts) will be used to maximize capture of sediment and minimize erosion. Fish,River and Wetlands Impacts and Management Fish and Aquatic Life Impacts to fish during the river crossing will be minimized by several features. First, the project will be timed to avoid adult migration and juvenile outmigration periods. Second, to minimize impacts to rearing fish and other aquatic life, the in-river work area will be minimized via use of bladder dams, sheet piling, and a diversion bypass channel. The bypass channel will allow fish passage and minimize channel scouring and turbidity (such as from a concentrated bypass pipe). Third, by using the open-trench crossing method,actual construction time in the river will be minimized. The bypass channel system will be modified into a groundwater-fed pond and channel after construction is completed. This channel and pond can be designed to function as off-channel high flow refuge, rearing, and possibly spawning habitat for salmonids, depending on Department of Fisheries and Muckleshoot Indian Tribe requirements. In addition, the concrete cap that will be placed over the river crossing will be designed to function as a fish weir foundation. This will allow trapping of sockeye and other fish for the purpose of gathering eggs and sperm as part of the efforts to restore fish stocks in the river. River, Stream and Wetlands A river,stream and wetlands restoration and mitigation plan consistent with the Requirements of Renton Municipal Code will be coordinated with other agencies and jurisdictions such as the Department of Fisheries and Wildlife,Department of Ecology,the Muckleshoot Indian Tribe,and the US Army Corps of Engineers. Class 2 Forested Wetland C-D It is anticipated that the project will cause minor impacts to the isolated wetland system C-D (Exhibit E). Approximately 0.16 acres of this wetland system will be disturbed as a result of machinery access and new pipeline placement. The wetland soils and vegetation will be restored to original condition after project completion(Exhibit I). Class 2 Forested Floodplain Wetland E Moderate impacts will occur in the•floodplain wetland system E due to machinery access and construction activity. An estimated 0.35 acres of this wetland system will be temporarily impacted. Mitigation for these impacts will include restoring impacted areas to original conditions, removing some of the invasive plant species which are infesting this wetland, and replanting with native vegetation(Exhibit I). The conceptual mitigation strategy is to remove some of the existing giant knotweed and red alder during bypass channel construction in the floodplain, restore the channel groundwater flow and gravel bed, and replant throughout the project area with native species with good rooting and sediment • \Utaphael sys\DATAVREN\195-0201PERMITSAcOE.DOC 8 of 14 03/18/96 UtiY� o Cedar River Utility and Salmon Enhancement Project • aR City of Renton, King County Water Pollution Control Division *,- .and Seattle Water Department - in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe trapping characteristics. Planted species can include Red Osier Dogwood, Sitka Spruce,Western Red Cedar,native rushes and sedges,willows, and Spirea. Class 3 stream The Class 3 stream on the south side of the site is currently in a culvert under the existing gravel access road. The stream will be temporarily diverted around work areas if needed (it may be dry during the summer) during utility trench excavation and pipe placement. Any areas of stream disturbance will be restored to the original condition. Working in or near the stream will be avoided to the maximum degree possible. • Mainstem Cedar and Diversion Channels • The project is anticipated to involve spanning the entire river width with a trench 30 feet wide and 11 feet below the current channel bed surface. The channel width at this location is approximately 70 feet during low flow. The trench will extend into the river fringes approximately 10 feet on either side. Pipes will be placed in the trench and encased in concrete. The concrete will function as pipe protection and the foundation for the fish weir. The final below bed structure will be 30 feet wide, 8 feet thick, and 3 feet below the surface of the channel bed. The upstream end of the structure will have a concrete lip which protrudes above the bed approximately 0.5 feet and will be 1 - 2 feet wide (Exhibit H). This lip will function as the attachment site for the fish weir. A diversion channel will be created by modifying the existing unstable dry channel. The channel will be designed with ability to be directed into a second on-site high-flow channel (dry during low flow) for emergency capacity only. Impacts on the river and diversion areas will be mitigated by restoring the trenched and working area to mimic the original conditions and by creation of an off-channel groundwater fed pond and channel discussed previously. Pond and channel designs will address water quality (including dissolved gases;water temperature, etc.) and quantity, depth, slope and other specific criteria following off- , channel habitat enhancement criteria developed by the Washington State Department of Fisheries and Wildlife'(Larry Cowan and others). Background: WPCD Wastewater Line WPCD(then known as METRO)installed a 12 inch diameter cast iron inverted siphon (referred to as the Cascade Siphon) across the Cedar River on the western edge of the Seattle Water Department Eastside Transmission Line right-of-way in 1964. The Cascade Siphon was constructed using coffer- dams and an open trench excavation through the river. The Cascade Siphon carries wastewater from the Soos Creek Water and Sewer District and from parts of the City of Renton. The line is not sized for current wastewater flowrates and frequently surcharges the gravity pipeline upstream of the siphon overflowing manholes near the Cedar River. NRaphadhsys\DATA\REN\195-0201PERM1TS ACOE.DOC 9 of 14 1. 03/18/96 oti�Y o,� Cedar River Utility and Salmon Enhancement Project + City of Renton, King County Water Pollution Control Division and Seattle Water Department 4?eArro in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe The existing siphon is 12 inch cast iron pipe about 450 feet long. The line is located within an easement and right of way owned by the Seattle Water Department. The line discharges to a 42 inch WPCD interceptor in the Maple Valley Highway (SR 169), through a standard manhole structure. The upstream pipe is a combination of 14 inch concrete and 21 inch concrete with manholes irregularly spaced along the uphill alignment. The upstream terrain is steep and is accessed using a utility road maintained by the Seattle Water Department. • . WPCD funded a replacement of the siphon in 1990 and has been working to replace the River crossing since that time.WPCD designed a utility bridge to support a new gravity sewer pipe in 1992- 93, at approximately the same location as the existing crossing. However, permits to build the bridge were not approved. - The condition of the existing siphon pipe is unknown and may be prone to failure. An accelerated replacement schedule will minimize WPCD's liability. Replacement of the Cascade Siphon is considered time critical due to potential impacts on water quality in the Cedar River and Lake Washington. As a result,construction is scheduled for the summer of 1996. City of Renton Water Line In 1990, the City of Renton identified the same area of the Cedar River as the site of a required waterline crossing. Renton's proposed waterline will convey potable water from the new Maplewood wellfield to the Rolling Hills and Talbot Hills areas of the City of Renton. The pipeline is a critical component of several recent improvements designed to improve water system reliability and redundancy, and reduce operating costs in the City. The pipeline will be 16 inch ductile iron sized and restrained for 250 pounds per square inch working pressure and 400 pounds per square inch test pressures. The pipe material will be restrained joint ductile iron to meet DOH criteria and provide seismic immunity. Renton's construction schedule is not critical, and the pipeline could be constructed anytime within the next 3 years. SWD Potable Water Line The Seattle Water Department(SWD) indicated in early January, 1996, that they may be interested in crossing the Cedar River with a new 56 inch regional potable water pipeline. SWD had not scheduled a replacement of the Eastside Supply Line at this time, however they indicated the pipeline was planned for upgrade in several years. The river crossing section could be accomplished now in conjunction with Renton and WPCD The Seattle Water Department project will require the installation of an empty 72 inch casing beneath the Cedar River. This casing will be used in the future to carry Seattle Water Department's replacement \\RaphaeRsys\DATA\REM195-020\PERMITS ACOE.DOC 10 of 14 03/18/96 • • 1�Y o Cedar River Utility and Salmon Enhancement Project — City of Renton, King County Water Pollution Control Division I• and Seattle Water Department in cooperation with Washington Department of Fisheries and Wildlife and the Muckleshoot Indian Tribe Eastside Supply Line. Installing the empty casing now avoids the need to disturb the river bed in the future. Fish Collection Weir Foundation Fisheries authorities have expressed an urgent need for a stable salmon collection weir in the Cedar River Mainstem due to the alarming decline in the sockeye salmon population in the Cedar and Lake Washington system. Characteristics of an ideal weir location include being low in the river system to allow for better genetic representation, accessibility for fisheries trucks and crews, and protection from vandalism and disturbance. This project site offers those characteristics and the project proposes to install the in-river fish weir support foundation structure. Cooperative Effort In 1995, WPCD and Renton agreed to combine resources to share the cost of the Cedar River • crossing and have both agreed that Seattle's participation is welcome. WPCD has agreed to • coordinate with SWD staff, outline the schedule constraints, and develop an administrative agreement for cost sharing. Alternative Methods Considered: Several options and construction methods were investigated to increase sewer system capacity out of the basin and to cross the Cedar River.Each is described below. Option 1 -Kent Interceptor Upgrade WPCD has previously investigated replacement or upgrade of the interceptor that flows to the west of Soos Creek Lift Station No. 5 with the possibility of routing all of the pumped sewage to the Kent Valley. Although this would reduce the flows in the existing siphon, it would not extend the siphon's service life. WPCD's staff has indicated that this option is too expensive,does not meet all the project - objectives, and cannot be completed within,the time required. This option will not be given further consideration. Option 2-Pedestrian Bridge A second option is to abandon the existing siphon under the river and construct a new siphon and new watermain on a pedestrian bridge crossing the Cedar River. This option was previously pursued and later abandoned when both a SEPA and substantial Shoreline Development permit were appealed and rejected based on Renton's codes. Renton's permit requirements prevent the construction of a bridge solely for the purpose of a utility crossing. A utility bridge designed to include pedestrian access to the south bank of the Cedar River ("pedestrian bridge") would meet Renton's codes, but not other concerns. \\R heel�c s\DATA REN1195-0201PERMITSWCOE.DOC 11 of 14 eP Y 03/18/96 oti�Y o� Cedar River Utility and Salmon Enhancement Project „ City of Renton, King County Water Pollution Control Division • =■ and Seattle Water Department �'NTo in cooperation with Washington Department.of Fisheries and Wildlife and the Muckleshoot Indian Tribe Recent flood events on the Cedar River underscore the vulnerability of a bridge structure to flood damage. The bridge piers must be out of the floodway and the bridge itself must be well above the reach of the largest trees and stumps carried by flood water. Bridges are also prone to vandalism and misuse. The Renton Parks Department and Renton Police Department have indicated they do not endorse a pedestrian bridge because it provides access to an unpatrolled area of the City. The Department of Fisheries indicated they do not endorse the pedestrian bridge because it provides access to one of the last pristine spawning areas on the lower Cedar River. Residents in the area have expressed a preference for an underwater utility crossing to minimize the aesthetic impacts. The bridge was estimated to cost up to $1,500,000. With additional design for pedestrian access and keeping the piers well out of the floodway, costs in 1996 dollars may be higher than the original estimates. In addition, opposition to this structure would likely cause permit delays or permit denials. Since it's construction cost is not less than the underwater crossing alternatives, it will not be considered further. Option 3 - Tunneling and Drilling Construction Methods - A variety of tunneling and drilling methods which would bore under the river were evaluated. Each method has certain specific advantages and disadvantages when compared with the site characteristics.In a detailed Predesign Report,each trenchless construction technology was compared to the project requirements and budget. Additionally each technology application in different soil and geological conditions was summarized. - Most trenchless construction methods are not feasible because of the substantial groundwater which will be encountered during construction and the large diameter boulders and cobbles which exist below grade. These methods present less predictable and potentially substantial environmental impacts. None of these methods would incorporate installation the fish weir foundation and habitat enhancement elements. Non feasible Methods The following trenchless construction methods were evaluated and determined to be not feasible due to the expected gravel and cobbles under the river: • Pipe Jacking • Micro-Tunneling • Auger Boring • • Impact Ramming (see note next paragraph) • Impact Moling Two methods were evaluated but do not meet the project's hydraulic requirements,even if they could be successfully installed under the river: R phaehsys\DATAWEN\195-0201PERMtTS ACOE.DOC 12 of 14 03/18/96 U1`tY imt o� • Cedar River Utility and Salmon Enhancement Project City of Renton, King County Water Pollution Control Division• and Seattle Water Department in cooperation with Washington Department.of Fisheries and Wildlife and the Muckleshoot Indian Tribe • Jet Cutting • Directional Drilling Potentially Feasible Methods • Two feasible trenchless methods remain. Horizontal Thrust Boring and Micro-tunneling are the most suitable technologies for this project. Horizontal thrust boring is attractive because it has lower cost than micro-tunneling. If the pipe cannot be advanced in one attempt, the pipe can be withdrawn and another alignment attempted without loss or damage to expensive equipment. Predicting the environmental impacts is somewhat uncertain. If all goes well, the environmental impacts should be minimal. If the pipe must be withdrawn and alternative alignments pursued, the cumulative impacts on the river could be substantial. (It should be noted that impact ramming is similar to the thrust boring method and may have application in this situation). Micro-tunneling could be used if the bore hole was lowered into the bedrock area below the river bed gravels. It is estimated that the tunneling would need to be conducted at a depth of 60 feet below the river bed to assure penetration into bedrock across the entire alignment. Substantial bore pits would need to be excavated on both sides of the river to allow for equipment access and large volumes of groundwater would need to be managed. Since the depth of bedrock is highly variable in this area (from 25 to 300 feet deep),the environmental risks of tunneling deep under the river are uncertain. Option 4- Open-Cut None of the previously discussed methods or alternatives are environmentally more predictable, incorporate a fish weir foundation, provide substantial habitat improvements, or cost less than an f open-cut method using conventional trench construction methods. This option is discussed in detail in the project description elements. • Opportunities for Cooperation and Basin Enhancement Coordination between the Washington Department of Fisheries and Wildlife, the Muckleshoot Indian Tribe, King County WPCD, King County Surface Water Management, the Cedar River Watershed Management Council,the City of Renton,and Seattle Water Department has occurred. The following project elements have resulted: • City of Renton Rolling Hills 16"Water Transmission Pipeline, • King County Water Pollution Control Division(METRO) Cascade Siphon Replacement, • City of Seattle Water Department Mercer Island Supply Line Replacement Casing, • Muckleshoot Indian Tribe & Washington Department of Fish and Wildlife Fish Weir Foundation Installation, - • Groundwater-Fed Pond Creation and Channel Enhancement to Address the Critical Lack of Off- Channel Salmonid Habitat in the Basin. \\Raphael\sys\DATA\REN\195.020WERM1TS\ACOE.DOC 13 of 14 03/18/96 o1'vY 0,4 Cedar River Utility and Salmon Enhancement Project �I City of Renton, King County Water Pollution Control Division o� and Seattle Water Department N'r in cooperation with Washington Department of Fisheries and -,I Wildlife and the Muckleshoot Indian Tribe Regulations and Permits Identified The City of Renton Wetlands Management Ordinance (No. 4346),requires that disturbance of Class 2 Forested Wetlands and their buffers shall be mitigated via restoration at a ratio of 1 to each 1. Where there is loss of wetlands involved from filling, mitigation involves creation of new wetland at a ratio of 3 to each 1 with possible exceptions granted based upon the merits of the project. The City of Renton Shoreline Master Program (Adopted by Ordinance No. 3758) requires that all stream alterations employ methods and timing to have minimal adverse effects on aquatic life, water quality,low flow,and fish passage. In addition,the following are specific requirements for utility and pipeline projects: • the native vegetation shall be maintained whenever possible, • when projects are in the water or a wetland, the disturbed area must be restored as nearly as possible to the original condition, •. water quality is not to be degraded to the detriment of marine life and nor shall watertquality standards be violated, • native soils shall be protected from erosion and natural conditions restored, • when underground projects are completed on the bank of a water body or in the wetland or a shoreline,the disturbed area shall be restored to the original configuration. Permitting requirements identified include: • Department of Ecology Temporary Water Quality Modification Permit(Section 401)for discharge into the Cedar River. • Hydraulic Permit Approval(HPA)from the Department of Fisheries and Wildlife. • Approval from the Department of Health(DOH)for the design of the water line. • Approval from the Department of Ecology(DOE)for the design of the sewer line. • Nationwide and-or Section 404 Permit from the U.S.Army Corps of Engineers • Washington Department of Natural Resources permit to cross State-Owned Aquatic Lands and Forest Practices Permit. • King County Industrial Waste Discharge Permit. • City of Renton Shoreline Substantial Development Permit, Construction (including Grade and Fill)Permit,and Conditional Use Permit,as well as floodplain and wetland review and approval. • Right-of-Way permit from the Seattle Water Department • Right-of-way franchise for work within SR-169 from Washington State Department of Transportation - - \Raphaensys\DATMREN\195-0201PERMTTMACOE.DOC 14 of 14 03/18/96 i Exhibit A _ -\ // , 7N PI v� U[ Vi = N o IIII'l/�^l I1III�II _ LAKE 1NGcON %\. g I [A 1 Il 1 -r 1_ I, * \ /gill W6 _it___V 1 1 _ --a.v_ ;,, i e�,,k T111J10 J siR 1 ..i ...\ . 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I _ • ‘,1��I y \ • , / 7! �- ,� \�\, �,� cs L CL4455 3 STREAM �!111I j{1 0111111 I�. _ :(8' \ i •+`. \,,\ ,'\ fj / > , �A'9 / \i 1) \ TFRMINAIF,6 IN WETLAND C-D `� ,�1111.itl{}111) 11' , \ / 1 I ,\, -_ `: /� /i•� ;•/ -- ' `�,11 _ l \ 'DISTURBED UPLAND DOMNATED BY , {I!I'Ifij!!!'#fllj�l .-. 13 1 - --- / �r�.•''r '\ 1 SCOTTS BROOM (l i • •i C" 1 CATEGORY 2,0,4 ACRE SPRING-FED WETLND i{11 t ---- . j \ \ C DOMINATED BY VINE MAPLE,SALMONBERRI.AND l i ,�, �f t .�, / �� ' ./ n, 1 1 \ _ PIGGY BACK-PLANT WITH RED CEDAR,HDFLOCK, I1 _,` r';' `\1 � \\ '; `J�/ AND ALDER MODERATE TO LOW FUNC111'�S f11UL1kt. I � fr'I • S -a. CT J. LEGEND _ il WETLAND AREA NOTE: LOCATIONS OF WETLAND E AND THE NATURAL HIGH-FLOW il'I''!1 CEDAR RIVER CHANNELS ARE APPROXIMATE STREAM RIVER MILE AT UTILITY CROSSING IS 3.1 11111 F.I,R.M.100 YEAR FLOOD LIRE , • I. .4 Ak F72f.IKLER9 • d• PUKKEST ORDINARY HIGH WATER MAPK - SCILNTISTS R(WUID KNATJQ 4WP:A Mr/SrS-IOSS ISM)ea,wso ISM SOS-SOU —VIP siio[s— STEEP SLOPE SENSITIVE AREA mS ouN SM(.s,K WAS,MA,1I a MICRO Or NE CMMS's:MOON Cr WE ro so.wc mu,ES IKS,n-e:s2 am'1-xa2 (tiro,r.:-Fes2 .A,(t.ND SKr',ROCS TD K 0r4.511`.W(SS..t er:Ur 95150(10 MODE Cam,•5mT¢,D rAi SMIIIrS,.t(.Cr SUMO I.( .A,(P PC(UK,0 ALLO.NE Or,K.),IN 10 Mi(,DI VNG Wit SUM(.D(W1OS M1,,IS APE. ,M(SKr PW(UtK'5,0 P(P(/C1 NE DIVING �GONM[(NVCID ISPoX LOGE n�SO KS,0MtiN,DC.'05 PIN Nts N(S4•C P:ypaw0MG.0H[r1CirS.AO dsau¢Cl RENTON I KCWPCD/SV�IQ q,/ CEDAR RIVER UTILIT> CROSSiNG T1 \\Ue\NM • vSENS1T1VE AREAS MAP • • ..... <i•v`i:,>.iSi};:i: ii'k�S�,:?'.t-c:��?�:.�45;:�':is:;:�:::C:'.i::�:i: :.: :•`.f::� +1'r .. a ..♦ n . 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N?np# • FISH WEIR ATTACHMENT SITES • —.-r 29'—2, " • 13'-9" h-- 1'-02. . 27 • r _.�04e°�. •.. pet r•KI;I tr/tN�•�pgftrtir rttr f t.FVir i:MIMAte. 4 i�r!i�th�1!i�r! y1!i�r!i fir%:�rf.iyrhy�yr i�•Sf.iy GRAVEL BED MATERIALS :•t•• T6' I 32' 72" K.C. 1 RENTON CONCRETE WEIR FOUNDATION AND SWD PIPE ANCHORING 30• + . • • ,. `-..I/ OPEN ` . • ›C 35.00' • 30- Q', KING COUNTY _,. C"F' RIVER CROSSING TRENCH SECTION REINFORCED TRENCH WALL UTILITY PIPES TT61A[FICS PUNNLR$ sncN ISIS al015710 u 4.4tOa arvw THIS PLAN SHOWS THE CROSS SECTION OF THE PIPELINES AND FISH WEIR ATTACHMENT PROPOSED TO BE CONSTRUCTION FOR THE FOLLOWING UTILITIES. (206)eee-l.es (5B1 Aes-mw (2f01 roe-002e le0m 7:0-V52 MX'�P•N5; 1 eY•_ ' WATER AND SEWER PIPELINES TO BE INSTALLED ACROSS RIVER AND UP HILLSIDE TO PROVIDE UTILITY SERVICE TO THE SOUTHEAST AREA OF RENTON. THE ot+w 5 u02 TO SCALE�ati., ''""`ti.".. Bta 5 BBa 2•702 B WATER PIPELINE TO ALLOW THE CITY OF RENTON TO MEET EXISTING WATER SUPPLY DEMANDS IN THIS AREA. THE SEWER PIPELINE IS TO REPLACE THE EXISTING PIPELINE THAT IS NOT LARGE ENOUGH TO MEET CURRENT DEMANDS WHICH HAS RESULTED IN SURCHARGING.OVERFLOWS.AND DISCHARGE OF RENTON I KCWPCD/SWD SEWAC_INTO THE CEDAR RIVER. CEDAR RIVER UTILITY CROSSING • FISH WE1RtROSS SECTION it to L ATTACHMENT ,s:o-r i u tav��.. lcoiluu 2 rA.5o•l 0::41 I'�I v.. t..... • ..0..:J> .. ...a Aii:' ?g:' .. ♦ "tip:••.'`•: ... S:M: i:C:` :�Y+'i Vey•H -..- a i _-_- - - Yit<t :� ,;•i �:. tv c`:��-. ' WETLAND VEGETATION RESTORATION, ENHANCEMENT WITH • S ,0,;dr'' NATIVE SPECIES, AND MONITORING CONSISTENT WITH 11, RENTON MUNICIPAL CODE CHAPTER 4-32 = 114 II ON-SITE WETLANDS AND STREAM RESTORATION WITH MONITORING • CONSISTENT WITH RENTON MUNICIPAL ` I I I CODE CHAPTER 4-32 AND TO ORIGINAL CHANNEL ENHANCEMENTS TO PROVIDE SALMON SPAWNING \ AND REFUGE HABITATS SHALLOW EXCAVATION (3') TO SAND L CONDITIONS AFTER PIPELINE PLACEMENT AND SILT TO EXPOSE NATIVE GRAVELS AND ACHIEVE f l I GROUNDWATER FLOW I A III II II r. ,,: I __ ' 3w�-�"'-- WET' XCAVATION (6') TO PROVIDE 1. !TIJ I 1 • �'-_ r+'ROVED GROUNDWATER CONNECTION\® I,: I �� 1 I. T7 TT , _ � - ram— 0 I I, I; I I 11 r 77• _f f f• s f 3-•r•.- '' -r .ARGE TREES (TYP O - - 1 f'f,-' '' f f.(/ 7 _, -wETr•r�•.:,4_ �' l • 1r - f f ill .c_,.--a. ,-,q 1 UTILITY PIPELINES AND • 11np P\� •• i' ;`:'..'rtr;;.'L_:1' ff I CONCRETE FISH WEIR :r-e. `. 11Q O Q . f a.s 4 M 4. • `;•L: 1. �: f f I FOUNDATION PLACED 3 FEET gym. \� -- a 0 f f a i0Y r_... 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THIS PLAN SH6YS THE AREAS THAT•V`ALL BE RESTORED AFTER THEY HAVE BEEN AFFECTED BY THE CONSTRUCTION OF THE tOWNG UTILI 4 I 1 11,4 11 I I • I WATER AND SEWER PIPELINES TO REINSTALLED ACROSS RIVER AND UP HILLSIDE TO PROVIDE UTILITY SERVICE TO THE SOUAST AREA OF•E' I1',I TIIEI - WATER PIPELINE TO ALLOW THE CITY:OF RENTON TO MEET EXISTING WATER SUPPLY DEMANDS IN THIS AREA. THE SE LINE IS TO REPi . T I EXISTING PIPELINE THAT IS NOT LARGE ENOUGH TO MEET CURRENT DEMANDS WHICH HAS RESULTED IN SURCHARGING.�LOOWS•AND DISCH •,I OF •- ‘ • `'; SEWAGE INTO THE CEDAR RIVER. ' I • 1 \� II1I - - LEGEND • ' f t f CLEARED VEGETATION AND UTILITY EASEMENT !Ma IMPACTED WETLAND NOTE: LOCATION OF WETLAND E IS APPROXIMATE • '4 ENGINEERS ` - UNDISTURBED WETLAND AREA RIVER MILE AT UTILITY CROSSING• IS 3.1 PLANNERS SCIENTISTS ��/___„X KNOWKNOWQNNIQ([ 0.,vry I RIVER EXCAVATION AREA 1(1 x� 2 1aZ;; DqD (,co1:Df-D52e em: t roe-•--em: • • DN,DP 5 NOI 10 c4 DB95 xDl�UMG D 1- 2- IN-RIVER WORK AREA RENTON/KCWPCD/S pN mil I I F,I.R.M. 100 YEAR FLOOD LINE CEDAR RIVER Ig�( Ft c, v ORDINARY HIGH WATER MARK WE a sfORATION PLAN a o2o I c,'r s:r1 v I NN,n.IPM I r..e (', i 7, I ., • • r2y}: ... - .. � :fig; .: :i . ...� �:.::-.�-...aa:.,. ....,:::. ...:;>::o<::::o-»::•-:i�•::G:�:: . . 6 0 < , r. �.r a .v w .,. n �. c x,... � Ca � . � m <N•.<•• ,-:<I5r¢ ...0.11 qC%.•1!-• *' Y: ..` • in •'''i+.` `..$F: ..• !*"... ?�$+,n5., <k7 ..`.:F:" .[ ;M:.:...• • `- 47-t f _. _d r?_ - 'may r- -L 5p~ - s`t 7%4 'i I.-.Vs.a : :: 60 '•" 7"9t''O .bp._re�.:-�•-•-.'4 F -- - s-" -. _ pT r is ! r ZQ.zy =t; �"`,f'A l-60 ! 1LL[le ^t�v. .'{; rl(i ^"`i. 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THIS PLAN SHOWS THE SOME OF THE SEQUENCES OF ACTIVITIES(CONTINUED ON THE NEXT SHEET)FOR PERFORMING THE CONSTRUCTION OF THE L F01000NG UTILITIES. 7/A7ER AND SEWER PIPELINES TO BE INSTALLED ACROSS RIVER AND UP HILLSIDE TO PROVIDE UTILITY SERVICE 70 THE SOUTHEAST AREA OF RENTON. THE ., ' '"- rain: WATER PIPELINE TO ALLOW THE CITY OF RENTON TO MEET EXISTING WATER SUPPLY DEMANDS IN THIS AREA. THE SEWER PIPELINE IS 7O REPLACE THE PUHN175 EXISTING PIPELINE THAT IS NOT LARGE ENOUGH TO MEET CURRENT DEMANDS WHICH HAS RESULTED IN SURCHARGING,OVERFLOWS,AND DISCHARGE OF SLIET`'n SEWAGE INTO THE CEDAR RIVER. 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S)17.0011 11400.E AND STRUCTURE 1)RANI VIES AIM OTER KCETAIOI W 91E. 6)MOT CERRER RRS N PRE EASNC5 !)COATTUCI SURTAQ 100 CONTROL MDTl1 6)CCw.LTEIY DCMENI@ EO RAMS.NO MATERALS INN TIC 97. • PMRS THIS PLAN SHOWS THE SEQUENCE OF ACTIVITIES FOR PERFORMING THE CONSTRUCTION OF DE FOLLOWING UTILITIES. sCIENTJSTS • REONWD RA,IDEC TAmPM 1]0N!!P_I,P! (SIN T.-0110 UDC)]45_M]! WATER AND SEWER PIPELINES TO BE INSTALLED ACROSS RIVER AND UP HILLSIDE TO PROVIDE UTILITY SERVICE TO THE SOUTHEAST AREA OF RENTON. THE ,p:y„>]o-Nn, IeD^l•,-e-e] m!: WATER PIPELINE TO ALLOW THE CITY OF RENTON TO MEET EXISTING WATER SUPPLY DEMANDS IN THIS AREA. THE SEWER PIPELINE IS TO REPLACE THE DRnxr.rs NDT io A,Tt , EXISTING PIPELINE THAT IS NOT LARGE ENOUGH TO MEET CURRENT DEMANDS WHICH HAS RESULTED IN SURCHARGING,OVERFLOWS,AND DISCHARGE OF e,A 5 T?T;:EN]0"- I' D- SEYrACE INTO THE CEDAR RIVER. RENTON/KCWPCD/SWp CEDAR RIVER UTILITY'CROS'Si G CONSTRUCTION•PHASES 5-8: '4RIVEFi CROSSING II l ON 1(VA,.,17c.I DRt i M.A:r.'II!i •a;w I:D 1 IV. Al .... r `Cw)i'."::<' �:�Ri ,:`f. : .. .•....... .. ... A .-.= .r ...: ], . .a:1.. : l ... ..- .- .•-..Kam:=t... . • Exhibit K .'' .. t• !'a 1•, 'r i . • •� • • • •• ��_l: 'v ? Wetlan Delineatiori`.j F d s •: �. _. ri Cosir:' f .t TRver:PiPelier ig•t ' Cedar: i �•. Renor � a hingtori-f_ y • • ii;; ., i • ;r. :i. �P• i.Y, .r., r• i. Su t ted .to.. • pi• •. , r•. - . . R • 2`En Q Ine er s `83 83 R. dm•• rid WA 2` � � is • eo158thAve. NE M arch 2 . 1996 • i > ...; ooke llOtiz''S�`:,,..:::::: -. n4231:NE.' 5i : i.�:vT i?::�'•Y•` ' � 9$12f n:n:v.::i:i.v.:4iii.iYn: v':::.1•:�}.TiT : ':: attl i.t` ::::. : . .� . .:5 1C ..ff ::i : ' n '}•:i:l% fi . , . Wetland Delineation Cedar River Pipeline Crossing Renton, WA March 2, 1996 Submitted,to: RH2 Engineers 8383 158th Ave. NE Redmond,WA 98052 Submitted by: Cooke Scientific Services 4231 NE. 110th St. Seattle, WA 98125 (206) 440 3130 REPORT SUMMARY The City of Renton;King County Water Pollution Control Division,Seattle Water Department;Washington Department of Fisheries and Wildlife;and the Muldeshoot Indian Tribe are pursuing a cooperative utility line upgrade and fisheries enhancement project. This project consists of the installation of several pipelines and a fish weir foundation under the Cedar River at (approximately) river mile 3.1 (Section 21,Township 23N, Range 5E)in King•• County,Washington(Vicinity Map,Figure 1). A pipeline corridor will extend to the north and south from the river crossing in a mixture of upland and wetland habitats bisected by a dirt access road and a Class 3 stream(King County SAO 1994). Three wetlands exist within the corridor, although none of the wetlands were identified by the King County Wetlands inventory(1990). Wetland AB is a narrow wetland located within a drainage to the east and adjacent to the dirt road. A class 3 stream enters the base of this drainage from the east and crosses under the road through a culvert. The stream daylights west of the road and meanders through wetland CD,a broadened wetland system heading in a westerly direction. The wetland sweeps around an upland island then flattens out along the road's west edge near the base of the slope. The southern portion of the site is nearly •• flat. Wetland E is located between the Cedar River shoreline and the base of the slope within this flattened bench(Sensitive Areas Map,Figure 2). Wetland AB is a small 0.4 acre, Category 2,spring-fed wetland,which is dominated by vine maple and salmonberry with overhanging Douglas fir,western red cedar,and western hemlock. The soils are composed of dark brown,fine silty loams overlying an impervious clay horizon. Wetland CD is a 0.9 acre, Category 2 wetland, dominated by salmonberry,red alder, and piggyback-plant. Some of the soils are similar to those found in wetland AB but are scattered throughout with pockets of fine sand scattered. Wetland E is a 1.2 acre, Category 2 wetland dominated by giant knotweed,salmonberry, and red alder, adjacent to the Cedar River. . The upland areas surrounding the wetlands support a medium-aged,mixed deciduous coniferous forest of big-leaf maple,red alder,Douglas fir,western red cedar and western hemlock with an understory of salal,sword fern,and common snowberry. The area between wetlands AB and E on the east side of the road is dominated by Scotch broom and red alder. TABLE OF CONTENTS Introduction 1 Background 1 Regulatory Jurisdiction 3 Methods 4 General 4 Field 4 Vegetation 4 Soils 5 Hydrology 6 Wetland Functions and Values 6 Results 7 General - 7 Topography 7 • Hydrology • 7 Soils 7 Vegetation 9 Wetland Descriptions 9 Wetland AB 9 Wetland CD 11 Wetland E 12 Disclaimer 14 References 15 Table Table 1: Summary of Wetland Characteristics 13 Figures Figure 1: Vicinity Map 2 Figure 2: Sensitive Areas Map, Renton Pipeline Crossing 8 Figure 3: Soils map, Renton Pipeline Crossing wetland location map 10 Appendices • Appendix A: Species List Appendix B: Wetland Delineation Determination Data Sheets Appendix C: Wetland Functional Evaluation Data Sheets • • WETLAND DELINEATION CEDAR RIVER PIPELINE CROSSING RENTON, WA INTRODUCTION Cooke Scientific Services (CSS), was asked by RH2 Engineers to locate, evaluate, and delineate wetlands on a site scheduled for a water pipeline crossing of the Cedar River in Renton,Washington. The site is located Section 21, Township 23N, Range 5E• (Figure 1). The site is situated on a northeast facing slope with a medium-aged second-growth mixed coniferous deciduous vegetative cover. From the base of the slope the site flattens to the south bank of the Cedar River. This area is highly disturbed with a number of invasive species. Because of the location and site conditions of the subject property and federal, state, and local regulations that control activity in wetlands,an investigation was warranted to determine the presence and extent of wetlands. The purpose of this report is to document the work performed which included identifying discrete wetlands, delineating their boundaries, mapping their locations, describing their ' characteristics,and evaluating their functions and values. This report also contains wetland ratings defined by the City of Renton's Ordinance No. - 4346 (1992) and amended by Ordinances 4478 (1994) and 4538 (1995) using field data collected during the site visit. Background , A pipeline crossing in Renton, Washington is scheduled for installation in Renton's Maplewood District on the south bank of the Cedar River (Figure 1). The Maplewood Golf Course is directly across the river. The site is bisected by a compacted dirt access road off of Royal Hill Drive. Investigation of the site was limited to areas lying 200 feet on either side of the existing dirt road and approximately 360 feet from Cedar River's south shoreline. The road turns at the base of the slope and continues to the southeast parallel to the river. The site slopes to the northeast at approximately 8 to 12 percent. The sloping portion of the site is - predominantly forested with Douglas fir (Pseudotsuga Menziesii), with some western red cedar (Thuja plicata), western hemlock (Tsuga heterophylla), big-leaf maple (Acer macrophyllum), and vine maple (Ater circinatum ). A drainage (wetland AB)from an expanded hillside seep lies within a drainage east of the dirt road. A stream enters the base of this drainage from the east and crosses under the road through a culvert. Previous investigations conducted by RH2 Engineers in conjunction with this investigation, classified the stream as Class 3 without salmonids (King County SAO, 1994). The stream originates from groundwater seepage from the surrounding slopes west of the road and meanders through wetland CD heading in a westerly direction, and terminates. The wetland sweeps around an upland island then flattens out along the road's west edge near the base of the slope. The southern portion of the site is nearly flat. A third wetland (wetland E)is located between the Cedar River shoreline and the base of the slope within this flattened bench. Cooke Scientific Services •:`::;..>::;; :::; :...:. March 2.1996 I . . / •\ , IA ILIDY.MIILTS :Th\\ _ LI / \ \ 907: LAKE 7(HING N \ 4 azii /Dir=307---1( . 1 r--- C Y - Ll'I -zidlit Tit4oil 1 - _ .. .--.... i IrACIP/-_--as - ii 1 [i& 0 , i _ ..., ./.._ - _I_ s M)Zik-grEkNQ II. II __ lig N, ad 1-— v#, , PlaiN.r , f 1 „ L pv ik[o_i-INE-778,0Alhow I IE Id A al irj( ' jj1M311 i 74 It/ , NE 4 2 I I Q 41:1prigID.' (# .0Df \ 0 lit SE let"-Pl4r V / / • \ • /, e i cvz, I , i 1J1I , .1,„,e, -. , (--IIIIIINMIT 4:4 e k ,p, I _., t\___,,,,,,,,, g r- 4440.- . SEL 543;Si • I • 11A. .r1111[0510F 1 i.-\1\1 ... 'reap Ilitk7 / 4AZeiy 111W/ /6..,1 "11 . se.---, ''' Az_ EI:=7) , -.--_, PROJECT / - >--- ; Ai _ r -• 1 ... .._......, 4110 ....,,z ...._ . .....___ IFF ., sc sr VIP 77:i I C ;."'s "r -- .=._-- = a, p... re — i 1 =A 1 .L CT7 .czo . a 1 , WA a 21A a AN .il SE IOW St c_ 4,tilini 111 FlOrLia 1/111 • I ..--••--1 c\X 1 kr----C-1111-11-11--11 if------,nr------11 ' PROJECT INFO; Figurel 00 - il LATITUDE: 47* 28' 20.6" VICINITY MAP 1 LONGITUDE: 122' 10' 07.9. • SCALE:IDRAINING .0.0.0.0-.0.v-..... 62... .. t. = 2000' tt..i ,• ..-::43-.:z .5}„1, 3o:::::::::-:,r::.:1::4:1 E1cNAGNINNEEERRSs 1 IF BAR IS NOT 2" LONG o . 1.' 2" veNg5-020\xmas\oare..pz IOO Wetland AB is dominated by vine maple (Ater circinatum) and salmonberry(Rubus spectabilis). Wetland CD is dominated by salmonberry,red alder(Alnus rubra), and piggyback- plant (Tolmiea Menziesii). Wetland E is dominated by giant knotweed (Polygonum sachalinense,). The uplands surrounding the wetlands supports sword fern(Polystichum munitum NI)and common snowberry(Symphoricarpos albus var. laevigatus). The patch between Wetlands AB and E on the east side of the road is dominated by Scotch broom(Cytisus scoparius). Before the site visit, background reference materials were assembled and reviewed to familiarize personnel with the site. These references include the National Wetland Inventory Maps (U.S. Fish and Wildlife Service [USFWS] 1979), The King County Sensitive Areas Inventory maps(King County,1990), and the Soil Survey of King County (Snyder et al., 1973) One on-site wetland evaluation was conducted on January 23, 1996. Three wetlands were identified and delineated and flagged. During the delineation process, areas were considered wetlands as defined by Section 404 of the Clean Water Act and as implemented by the U.S. Army Corps of Engineers (Corps) using methods consistent with the Corps Wetlands Delineation Manual(Environmental Laboratory, 198 . � Regulatory Jurisdiction The delineated wetlands are located. in Renton, Washington. Several federal, state, and local regulations may apply to development proposals in and near these wetlands. The agency having jurisdiction over development activities that affect these wetlands is currently the City of Renton. Renton's Ordinance No. 4346, (1992), and amended by Ordinances 4478 (1994) and 4538 (1995) requires the use Corps.Wetland Delineation Manual (Environmental Laboratory, 1987) with the letter of guidance'issued in 1992 (USACOE 1992). The Washington State Department of Ecology (WDOE) reviews or approves many federal, state, and local permits. .. The State also requires the use of the 1987 Wetland- Delineation Manual (Environmental Laboratory, 1987). The Washington State Department of Fish and Wildlife administers the State Hydraulic Code,which is intended to protect fish and their supporting habitat. Pursuant to Section 404 of the Clean Water Act, the Corps regulates the discharge of dredged and fill materials into.waters of the United States, including wetlands, through the Corps'permitting process. The Corps and the U.S.Environmental Protection Agency (USEPA), ' which have joint authority over Section 404 of the Clean Water Act,require the use of the Corps Wetland Delineation Manual (Environmental Laboratory, 1987). These two agencies define ' -, wetlands as: Those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a ', prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps,marshes,bogs,and similar areas. Washington state, through the WDOE, has authority to issue 401 Water Quality Certification for projects that require individual Corps permits under Section 404. Such projects involve filling or grading within navigable waters and waters below the headwaters of streams and rivers (including adjacent wetlands), filling or grading of more than 2 acres of isolated waters (including wetlands), or filling or grading within waters (including adjacent I-- 'i wetlands) above the headwaters of streams and rivers. Nationwide Permit 26 may allow fill-related impacts of less than 2 acres of isolated wetlands or adjacent wetlands located above the headwaters (defined as an average annual flow of 5 cubic feet/second)with several restrictions. When a wetland fill with less than 1 acre Cooke Scientific Semites : • March Z.1996 3 of impact is proposed under Nationwide Permit 26, fewer restrictions apply. If wetland impacts are between 1 and 2 acres, the Corps must be notified first and may authorize the action, provided the State of Washington issues a water quality certification. Generally, the Corps will issue a letter of authorization under Nationwide Permit 26 within 6 to 8 weeks after an application is submitted,provided no unresolved issues emerge. Wetland boundaries delineated by CSS are subject to verification and approval by jurisdictional agencies. Any site design work prior to verification of wetland boundaries is subject to corrective changes. METHODS General The primary purpose of the site visit was to locate,.evaluate, and delineate wetlands associated with the project site. A search was made of all available that might have previously identified wetlands on the site. No wetlands were identified in any of those references. Field To determine the location and extent of wetlands, CSS staff traversed and examined areas to be impacted by the proposed pipeline crossing. Wetlands were identified on the basis of the presence of hydrophytic vegetation, hydric soils, and wetland hydrology using the routine method outlined in the Corps Wetland Delineation Manual (Environmental Laboratory, 1987). • During the site evaluation, detailed sample plots were located in distinct representative vegetation units in order to characterize the wetland community and determine the rating of each wetland. In addition, a general assessment of the functions of each wetland was performed. A delineation of wetland/upland boundaries was then made by walking and flagging the edges of each identified wetland. Vegetation Plants typically adapted to wetland conditions are considered hydrophytes. The data were collected consistent with the hydrophytic vegetation procedure of the Corps Wetland Delineation Manual(Environmental Laboratory,1987). Dominant plant species (usually those species with greater than 25 percent cover) and subdominant species (usually those species with between 5 and 25 percent cover) were recorded in each vegetation stratum (tree canopy, shrub layer, and herbaceous layer). The wetland indicator status of each plant was assigned using the USFWS National List of Species that Occur in Wetlands: Northwest—Region 9 (Reed, 1988) and the Supplement to Wetland Plants (Reed, 1993). The indicator codes for plant species are noted below: • Cooke scientific services ::: .:.. : March 2,1996 4 • Code Designation Wetlands probability*1 OBL Obligate wetland species > 99 FACW Facultative wet 67 to 99 FAC Facultative 34 to 66. FACU Facultative upland 1 to 33 UPL Obligate upland < 1 NI No indicator status *lpercent chance that plant found in a wetland When 50 percent or more of the dominant and subdominant species in each stratum (tree, shrub, and/or herb layer; considered cumulatively) have an indicator status•of OBL, FACW, and/or FAC,the vegetation is considered hydrophytic. Plant nomenclature used in this report follows Flora of the Pacific Northwest (Hitchcock and Cronquist,1976); and The Jepson Manual, Higher Plants of California (Hickman, 1995). Scientific . names and indicator status are given only at the first reference to each species. Eight-letter species codes,which represent the first four letters of the genus and the first four letters of the species,were recorded on the field data sheets (Appendix A). Wetland community types will be discussed as they are described by Cowardin, et al. (1979). The community.types found during this study were palustrine forested (PFO), palustrine emergent (PEM),and palustrine scrub/shrub(PSS). - Wetland ratings and buffer designations were assigned according to the City of Renton's Critical Areas Ordinance (Renton,1992). Soils . Before the site visit,soil survey maps of King County,prepared by Snyder et aL, (1973 ) for the national Cooperative Soil Survey of the U.S..Department of Agriculture (USDA) Soil Conservation Service (SCS) were examined. SCS soil maps may not be sufficient to precisely 1, determine the extent of hydric soils on a site because of mapping methods and scale. Most SCS maps are produced using aerial photographic interpretation with only limited field verification. Map units of a non wetland soil commonly include hydric soil and vice versa. Hydric soils are those that are saturated,flooded, or ponded for a sufficient time during the growing season to develop anaerobic conditions that favor the growth and regeneration of hydrophytic vegetation (United States Department of Agriculture [USDA] 1985). Soils were analyzed for hydric indicators as described by the Corps Wetland Delineation Manual (Environmental Laboratory, 1987). The SCS, in cooperation with the National Technical Committee for Hydric Soils, has compiled lists of hydric soils of the United States (USDA, 1991). On-site samples were taken in each wetland plot using a 20-inch soil probe or auger. Soils were characterized using standard SCS protocoL Soils colors were identified using a Munsell soil color chart (Kollmorgen Corporation,1988). Depth of soil saturation was recorded for each plot. Many probe samples at locations across the wetland/upland boundary were examined in order to determine the exact boundary line. This multiplicity of samples was used to examine similarities or differences in soils between major sampling points and establish mapped soil unit boundaries. 1 Cooke 5c;�tific Services?. ::`. •':_:- • . ; . Lurch 2,1996 5 Anaerobic (saturated) conditions cause hydric soils to form certain characteristics that can be observed in the field. Hydric indicators include:, . an 8-inch or greater layer of organic material at or near the surface,the presence of a matrix chrome of 1 or less in unmottled soil or 2 or less in mottled soil, gleyed soil, organic soils (peats and mucks), and accumulation of sulfidic material. Hydrology Wetland hydrology is considered present when there is periodic inundation or .soil saturation of the surface for a specified period during the growing season (Environmental Laboratory, 1987). Wetlands need not be wet year-round to support hydric soils and vegetation. Under normal conditions, hydrologic indicators are used to 'determine if the hydrology is either currently present or can be inferred from the guidelines provided in the Corps Wetland Delineation Manual (Environmental Laboratory, 1987). These indicators include: site inundation, soil saturation to the surface or within a specific distance from the surface, water table depth, water marks on vegetation, drift lines, plants displaying hydrophytic adaptations,waterborne sediment deposits, algal deposits on the soil surface, and wetland drainage patterns. • The criteria establish the depth and duration of inundation or saturation(including capillary fringe) necessary to determine positive wetland hydrology. The Corps Wetland Delineation Manual (Environmental Laboratory, 1987) and subsequent letters of guidance (March 1992) establish the hydrology to be present if the soil is inundated or saturated within 12 inches of the surface for at least 5 percent of the growing season. The growing season is defined as, "When the soil temperature at 20 inches gets above 41'F,or after the last date that the air temperature • • gets below 28'F in 5 out of the last 10 years." The rainfall data from the closest weather station in King County establishes the growing season to be 280 days. The duration of saturation would therefore be two weeks{verified by Chris McAuliffe,Corps(April 1993)}. • Wetland Functions and Values Wetlands play important roles that provide valuable benefits to the ecosystems in which they exist. Each wetland serves some function that has some benefit,although specifics vary from wetland to wetland. Understanding and identifying these benefits and roles is currently limited to qualitative and semi-qualitative judgments and knowledge of potential functions and their benefits. Wetland functions and values identified by many sources (Adamus et at,1987; Mitsch and Gosselink, 1986; Sather and Smith, 1984; and Reppert et at, 1979) include: • hydrologic support • storm and flood • water attenuation • flood peak de synchronization • sediment stabilization and erosion control • water quality improvement through biofiltration and retention of sediments nutrients, and toxicants • high primary productivity • accumulation of organic material • important nutrient cycling and utilization • food chain support • habitat diversity for fish and wildlife • refuge for threatened,endangered,and sensitive species • passive and active recreation Cooke Scientific Services ::: ... &larch 2 996 . . 1 6 it The entire site was examined for the presence/absence of these functions and a qualitative assessment of the value of the function,was made using a semi-quantitative method(Cooke, 1995). See data sheets Appendix C RESULTS General • CSS identified and delineated three areas that qualify as wetlands on the project site. These wetlands are designated wetland AB, wetland CD, and wetland E (Figure 2). Wetland AB is an hillside seep which is fed from groundwater that emerges from the toe of the slope, and flows into a drainage swale located to the east of the filled dirt road that bisects the project area. Wetland CD is a larger system located to the west of the road. It is fed by the stream that initiates to the east of wetland AB, as well as from seeps and other drainages from the hillside to the north and west of the dirt road. Wetland E lies on a flat bench adjacent to the south bank of the Cedar River. It is the wetland corridor associated with the river. The National Wetland Inventory map (USFWS, 1987) does not identify wetlands on the site. The King County Sensitive Areas Inventory maps (King County, 1990) also did not identify wetlands on the site. • Topography • In general,the topography of the property slopes to the northeast at approximately 8 to 12 percent, except the flattened bench adjacent to the south shore of the Cedar River. The topography rises in the middle of the site on either side of the road, then falls sharply to the flood plane. Hydrology Wetland AB and CD are fed by hillside seeps,surface runoff, and a stream. Saturated soils were found throughout these wetlands. Soils samples taken from these wetlands were found to be silty loams with a chroma of 1, an indicator of hydrology. The soils of wetland CD were inundated from 0 to 6 inches from the ground surface. "Wetland CD also has large patches of bare ground,another indicator of hydrology. Soils • The Soil Survey of King County (Snyder et al., 1973) identified the soil on the site as very steep Alderwood and Kitsap soils (Figure 3). Although these soils are described as non-hydric, both can contain hydric inclusions within the mapping units. This unit is about 50 percent Alderwood gravelly sandy loam and about 25 percent Kitsap silt loam. The Alderwood soil is moderately deep over a hardpan. Typically,the surface layer is very dark grayish brown gravelly sandy loam about 27 inches thick. Depth to the hardpan 7 , . I. , . . _ • . • :s.. . ,. . • . • . — 1 ra, . ' . , (f) - --• --,-.=---• . . • • 0 }(7.--',........... • . ' 1K It,,. • r E [I] El. 4 -ST •''I1r r . . . — — ( . 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' •. • , ,. .• .. • . . . ranges from 24 to 40 inches. Permeability of the Alderwood soil is moderately rapid above the hardpan and very slow through it. Kitsap soils are very dark brown and yellowish-brown silt loams that extend to a depth of 24 inches. The substratum is a silty clay loam. These soils are found on terraces and gently- undulating to steeply-sloped terrain. • Vegetation • Wetland community types found on the property are: forested/deciduous scrub/shrub (Cowardin type PFO/PSS) wetlands (western red cedar, salmonberry); and emergent (Cowardin type PEM) (piggyback-plant) . A species list including all species found is provided in Appendix A. Only dominant and subdominant species are discussed in the text. No endangered, threatened, or sensitive species have been found or identified on the project site (Washington National Heritage Program, 1991). Wetland Descriptions Field data sheets are located in Appendices B and C Wetland AB - Wetland AB is a 0.4 acre, Category 2, PSS/PFO wetland dominated by vine maple (Acer circinatum,FAC-),salmonberry (Rubus spectabdis,FAC+), and piggyback-plant (Tolmiea { menziesii,FAC)with overhanging western red cedar(Thuja plicata,FAC),western hemlock (Tsuga heterophylla, FACU-), and red alder (Alnus rubra, FAC). It is located in a shallow ravine on the east side of the access road. At the time of the investigation,there was a small stream running through the wetland which entered from the east. Depth of the water in the stream's - channel was approximately two inches. The system is also fed by hillside seeps. In addition to the plants already identified,the vegetation consists of tall mannagrass (Glyceria data, FACW+),stinging nettle(Utica dioica,FAC+),red elderberry (Sambucus racemosa, FACU), sword fern(Polystichum munitum,FACU), different leaved water-chickweed (Callitriche heferophylla, OBL),spreading wood fern(Dryopteris expansa,FACU), and two mature big-leaf maples (Acer macrophyllum,FACU). The soils of wetland AB were saturated very dark brown(10 YR 3/1) silty loams. This area was determined to be a wetland because of its hydrophytic vegetation, 1 hydric soils,and wetland hydrology. • The access road lies to the west of wetland AB. Upland vegetation to the east of the wetland includes Douglas fir (Pseudotsuga Menziesii, NI) mixed with western red cedar (Thuja plicata,FAC),western hemlock(Tsuga heferophylla,FACU-), big-leaf maple (Acer macrophyllum, FACU) and vine maple (Acer circinatum, FACU+). Also present are sword fern (Polystichum munitum,FACU)and red huckleberry(Vaccinium parzri folium,NI). Wetland AB has a low potential for groundwater recharge because of the site's steeply sloped terrain. The topographicallyhighground to the east and west of the wetlandprovides ground water discharge r the ase f the slope. The channel in the bottom of the rainage will provide Iow detention and retention of rain water which falls on the site and therefore provides low floodwater attenuation because of the lack of storage area. The site receives low inputs of sediments, nutrients and toxicants. Thus, the site's function of retention and transformation of these materials is low with current conditions. Moderate to low internal • Coolce Scientific Serviced March 2.1996 9 • • , . . . . . •- • .ti• • • i‘r-...14,..61.31:1;74;7111.; :„ .:31.i,.., 1..i... •?i,j.....iz...;:iild.tier,g,:•aii... , ii::::.......q.,;:tie!h,....1.i.i,o;.0:4.ii.).4,. .1„4 .0.• 1 :i. ..) . 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Wri.1 rk14:1[111' 1 ', ..4. ici • .,,,:. .;•,..IICC,21...4-.4..;..0 . • o ni 0 * ''-ii 4 .•4 'ri..'1 ''''' 'VAIN • ' ' - ',II'•.4'1 ' ' 1 r .4.4.44..„? , .,',4111154•Alliviiie. i. • ,••••-• I .!1„wit i /I/ 1 ,F,,,ri,g7 IP aur ,11 I 0 •, 06 U., PI I. • „ .ii).v.i.•..•%•,•);:1 0 o -1-) IN";1 ' AEI:14.,".1%,wARRillr`,-'''' i il b :... 2..... . 4: '4,4.,/- • ,,.,,ibliq vi;..,,iptair :: 1 r t si. i .ma .,..,',. • . ...::!, ... ',,w ‘} 1 I Io , . lisPi0,51.:i'll: 'iai-7.4PIP! 0-: . %..1...".? 1,`N.. 0. 1049:4„ > fz4 •' .... • • . • thVik.:!I...'.,44.4'4, . 6 /a • ,, 'CS CO -• • • I / To-' : • • " '', Jr-114;: fiSiiigitiPSI$414 4 ° liL five::•‘4-;.:Mili' . 4••• 4 • ' '.• lif• . ( 2 to : •. 03 Ai • . ..- •..i, • 6, 4F.,,'•!•+4;:ti 1 s 4 4'1N e i •: ,1:•• 0 ),-, itziiv-e 4e'^ 7•111. •.z., .. •;•, 7,4 -- •. '. 11*iliMi:3,,1 .... fs . e gl,.. • ..r.e, r..t % yr •S ,/ ,.4., rd ni n 0 . ,... , 1140ifiliril:r . ,'. 'I.. •-•...'; .i.. IIiilts4).41,1 ...!• ...i? .1 I a 4,...": lik-°^ir : &•!.s:'"41„.e,. J:........1.1.. ..., ..1' I r pp ,..•4.-.4, it* - ' '...et P ./n% tfl • '. .. .. " :illitrgfil'P 451" -. '41',-,? '?9 Ark '3A ••'"\do '141N..4 d: • C2 ..T, al W MI MI'CI .T 41.1 rei ....6 a) iv ..0 II II . rtt E yo •. • • . ,. . ••. . - • - . _ . . , ...__ 1 1 • • decomposition and low nutrient cycling on the site contribute to low primary productivity and • low organic accumulation. There is moderately high detrital transport. These productivity characteristics and moderate vegetation cover and quality in terms of species richness provide moderate to low food chain support and wildlife habitat. There is moderate to low potential for invertebrate,amphibian,mammal, and bird habitat. Due to it's size and isolated location, wetland AB has minimal recreational and aesthetic value. Wetland CD Wetland CD is a 0.9 acre, Category 2, PSS/PFO wetland located west of the access road about halfway down the hill. Two lobes of the wetland are divided by a patch of upland that rises with the study area. The lobes are connected to a larger system that spreads west of the - pipeline corridor. A Category 3 stream (King County SAO, 1994) that enters at the base of Wetland AB crosses the access road through a culvert and enters CD. This stream meanders through CD sweeping around the base of the upland island. Wetland CD is dominated by salmonberry (Rubus spectabilis, FAC+), red alder (Alnus rubra, FAC), piggyback-plant (Tolmiea Menziesii, FAC), and mosses. The vegetation in the wetland also includes devil's club (Oplopanax horridus, FAC+), tall mannagrass (Glyceria data, FACW+), largeleaf avens (Geum macrophyllum,FACW-), creeping buttercup (Ranunculus repens, FACW), miner's lettuce (Montia • siberica, FAC), Himalayan blackberry (Rubus procerus, FACU), three-leaf foamflower (Tiarella trifoliata, FAC-), lady fern (Athyrium filix femina, FAC), licorice fern (Polypodium glycyrrhiza, NI), Dewey sedge (Carer deweyana var. deweyana, FACU), vine maple (Acer circinatum, FAC-), • sword fern (Polystichum munitum, FACU), water-parsley (Oenanthe sarmentosa, OBL), red • huckleberry (Vaccinium parvifolium, NI), and reed canarygrass (Phalaris arundinacea, FACW). The soil is a silty loam with no histic epipedon and a dark brown color 10YR 3/1 The soil is saturated to the surface with inundation to within 6 inches of ground leveL . This area was determined to be a wetland because of its hydrophytic vegetation, hydric soils, and wetland hydrology. Vegetation found in the upland surrounding Wetland CD includes Douglas fir (Pseudotsuga Menziesii UPL), big-leaf maple (Acer macrophyllum, FACU), vine maple (Acer circinatum FACU+), and black cottonwood (Populus balsamifera ssp. trichocarpa, FAC). Also present are red elderberry (Sambucus racemosa, FACU), common snowberry (Symphoricarpos albus var. laevigatus, FACU),Himalayan blackberry(Rubus procerus, FACU), and sword fern (Polystichum munitum, FACU). Wetland CD has low potential for floodwater attenuation and floodwater detention and retention because of its sloping topography. The potential for sediment stabilization is moderate to low because of the vegetation on the banks. There are areas where erosion is obvious,especially the narrow ravine that connects the southern portion of the wetland to the northern edge near the Cedar River. Retention and transformation of sediments, nutrients, and toxicants is low under current conditions but could be high if toxicants were present. Moderate internal decomposition and nutrient cycling with high export contribute to the low primary productivity characteristics of the wetland. The steep nature of the topography and the stream access through the wetland insure there is almost no organic accumulation. This wetland has moderate to high invertebrate,amphibian, mammal, and bird habitat potential. Wetland CD's size and location across the river from the Maplewood Golf Course contribute to its moderate aesthetic and recreational value. Cooke Scientific Services March 2,1996 1 1 • • Wetland E Wetland E is a 1.2 acre, Category 2, PEM/riparian system located within the Cedar River flood plane. The wetland vegetation consists of giant knotweed (Polygonum sachilinense, FAC), red alder(Alnus rubra,FAC), and salmonberry (Rubus spectabilis, FAC+). The soils are deposits of fine to medium sand (10YR 4/2)with organic streaks found throughout the soil profile. The wetland is situated below the plateau where wetland CD and some upland areas are found. • Wetland CD is separated from wetland E by an abrupt break in the topography causing a bank 3 to 5 feet lower at the edge of wetland E. The stream which flows through wetlands AB and CD may overflow into wetland E during high flow storm events. Field investigations conducted by RH2 Engineers in November, December (1995), January, and February (1996) during and following periods of heavy precipitation and regional flooding found no evidence of stream overflow into wetland E. During and after flooding events on the Cedar River in December - - (1995), January, and February (1996) RH2 investigated wetland E for flood plain functions. Only during the February 3-9 event (estimated as a 25- 30 year event, RH2 pers comm.) did floodwaters overflow onto parts of wetland E. Specifically, flood waters flowed up into tow natural conveyance channels which are dry during flooding events estimated at less than 25 year events.Other than these observations,there is no apparent hydrologic connection between the upper wetlands and this River adjacent wetland. Wetland E has moderate potential for floodwater attenuation and floodwater detention and retention because of its flat topography adjacent to the Cedar River. There are many areas where sediment accumulation is obvious which indicates floodwater retention. The potential for sediment stabilization is moderate to low depending on the time of year, because of the thickness of the giant knotweeds growing throughout..the area. Giant knotweed will help stabilize the sediments during the growing season but afford less erosion control during the winter when much of the rootstock dies back. There are few or no sedges or grasses in this area to hold the surface sediments in place. Erosion is obvious in some areas. Retention and transformation of sediments, nutrients, and toxicants is low because of the character of the plant community. Moderate internal decomposition and nutrient cycling with high export contribute to the low primary productivity characteristics of the wetland. The flat topography and the adjacency of the wetland to the river insure there is almost no organic accumulation. Most is exported during high volume storm events. This wetland has moderate to high invertebrate and amphibian, and moderate to low mammal and bird habitat . potential. Wetland E's size and location across the river from the Maplewood Golf Course contribute to • its moderate to low aesthetic and recreational value. • • Cooke Scientific services::::; March 2.1996 • 12 Table 1 Summary of Wetland Characteristics Wetland Class Buffer Acres Functions • moderate to low hydrologic support AB 2 50 ft. • low water quality improvement • moderate to low habitat support • moderate to low biological support • low socioeconomic function • moderate to low hydrologic support • CD 2 50 ft. • low water quality • moderate to low habitat support • moderate to low biological support • low socio-economic function • moderate to high hydrologic support E 2 50 feet • moderate to high erosion control from the • moderate to low water quality improvement Rivers' • low to high wildlife habitat support • moderate to low biological support • • low socio-economic function Data sheets for the functional evaluation can be found in Appendix C. a _ 13 -'I DISCLAIMER Cooke Scientific Services (CSS) has prepared this report for use by the RH2, the City of Renton, and project consultants. In preparing this report CSS has used the site information supplied by RH2 Engineers and referenced herein. The results and conclusions of this report represent the professional opinions of CSS. Findings reported herein are based on the following: information gathered in the field at the time of the investigations by CSS staff; information provided by RH2 Engineers;.the understanding of CSS of federal, state, and local regulations governing wetlands; and examination of public domain information concerning the proposed site. • The wetland boundaries, site hydrology, wetland classifications, and functions and values discussed herein are the best professional opinion of CSS, based on the circumstances and site conditions at the time of the study. Work performed conforms to accepted standards in the field for routine delineations according to the U.S. Army Corps of Engineers Wetlands Delineation Manual(Environmental Laboratory,1987). The determination of the jurisdictional wetland boundaries pertinent to Section 404 of the Clean Water Act, however, is the responsibility of the Seattle District of the U.S. Army Corps of Engineers. Many different regulatory agencies may require review of final site development plans that could affect zoning, water quality, and/or habitat functions' of the lands in question. Thus, the findings and conclusions contained in this report should be reviewed by the appropriate regulatory agencies prior to any detailed site planning and/or construction activities. • . I • • Cooke Scientific Services: March 2,1996 .. 14 • • REFERENCES Adamus, P. R., E. J. Clairain, Jr., R. D. Smith, and R. E. Young. 1987. Wetland evaluation technique (WET);Volume II: methodology. Operational Draft Technical Report Y-87. U.S. Army Engineer Waterways Experimental Station. Vicksburg,Mississippi. Cooke, S. S. 1995. Wetland and buffer functions,A semi-quantitative assessment methodology. Seattle,Washington, Cooke Scientific Services, . • Cowardin, L., V. Carter, F. Golet, and E. LaRoe. 1979. Classification of wetland and deepwater habitats of the United States. U.S. Fish and Wildlife Service,Office of Biological Services,Washington,DC. Publication No.FWS/OBS-79/31. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1,U.S. Army Corps of Engineers Waterways Experimental Station, Vicksburg, Mississippi Federal Interagency Committee for Wetland Delineation (FICWD). 1989. Federal manual for identifying and delineating jurisdictional wetlands. U.S. Army Corps of Engineers, U.S. Environmental Protection Agency, U.S. Fish and Wildlife Service, USDA Soil Conservation Service,Washington,DC Cooperative technical publication. Hickman, J.0 (Editor) 1995. The Iepson Manual. Higher Plants of California. Berkeley, Los Angeles, California,University-of California Press. Hitchcock, C L. and A.Cronquist. 1976. Flora of the Pacific Northwest. Seattle,Washington, University of Washington Press. King County. 1990. King County Wetlands. Bellevue, Washington, Environmental Division, .., King County Building and Land Development. King County.1994. King County Sensitive Areas Ordinance. King County Building and Land Development,Bellevue,Washington. Kollmorgen Corporation. 1988. Munsell soil color charts. Baltimore,Maryland. McAuliffe,Chris, 1993. Personal communication, staff U.S. Army Corps of Engineers, Seattle district. Mitsch,W.J., and J.Gosselink. 1986. Wetlands. Van Nostrand Reinhold Co.,Inc. Reed, P.B. 1988. National list of species that occur in wetlands: Northwest Region 9. U.S. Fish and Wildlife Service. Welut 86/WIZ.47. • Reed, P. B. 1993. Supplement to the national List of Species that occur in wetlands: Northwest-Region 9.US Fish and Wildlife Service. Renton, City of. 1992. Ordinance 4346. Renton,Washington. Renton, City of. 1994. Ordinance 4478. Renton,Washington. Cooke Scientific Se 3cec March 2,1996 • 15 • Renton, City of. 1995. Ordinance 4538. Renton,Washington. • Reppert, R,W. Sigelo, E. Stakhiv, L. Messman, C Meyers. 1979. Wetland values. Concepts and methods for wetlands evaluation. Virginia,U.S.Army Corps of Engineers,Institute for Water Resources. RH2 Engineers,1996. Personal communication,Redmond Washington. Sather,J.H., and R.D.Smith. 1984. An overview of major wetland functional values. US Fish and Wildlife Service. FWS/OBS-84/18. Snyder,D.E.,P. S. Gale, and R.F.Pringle. 1973. Soil survey of King County area, Washington. National Cooperative Soil Survey. U.S. Army Corps of Engineers (Corps). 1992. Guidance letter. U.S. Department of Agriculture (USDA). 1985. Hydric soils of the state of Washington. Washington D.C,Soil Conservation Service. U.S. Department of Agriculture (USDA). 1991. Hydric soils of the United States. Soil • Conservation Service, in cooperation with the National Technical Committee for Hydric Mis cellaneous Publication#1491. US. Fish and Wildlife Service (USFWS). 1985. Endangered and threatened wildlife and plants. 50 CFR 17.11 and 17.12. Washington, D.C, U.S. Department of the Interior, Fish and Wildlife Service. U.S..Fish and Wildlife Service (USFWS). .1987. National Wetland Inventory Map—Renton Quadrangle. Washington Natural Heritage Program. 1991. Endangered, threatened, and sensitive vascular plants of Washington. Olympia,Washington,Department of Natural Resources. • • Cooke Scientific saviors : March 2,1996 16 , '-'. • a i _ i • - . • • • • . .. • ' ' . 1 . . --j; • .. , '•- ' . . . , . , :-.7 •• , . , . •. , . . . . • • - • 1 1 •.. • _ ,.. • . • — ,.., 1 z , i • r . •.• • w• . 1 . . • - . , • J - . 1., i • 1 Appendices ... • •. • _., . , . , • ,. • . . -- . ....„ • ,,,.f., -,...:.,..,..„,..,....„.,:,„„:„.......,....,:.,.:„........:....:::::.•.,,,.::.:.::,....:-...--..., .....:". :.. :-.......,...:::.„....„-,.:-.,..::-......,.."."....-.:::„... .:,.,...„..:,:„..,,.,:::::•„.....,,......,,...y........„::::::,::::::::::...,,,......:::,;,...::: . : ...-1,:v ,::-.•::„.:.::::,.....,-.-..,-.:.-:::::::,:,.,:......,.i....-::,..,..:.,.,:::.:,.::•:...,...::-,..........f..::-.:::,,:...::::::::....::::,-,,::::.:-..,............:,.::::..,---:.:-:-.:. ...:-..,,,,.....:..,...-.:...„.::::.:,...:.,:::-.....: ::::,-..•......:.,•,..,.........,......:::-„,::.:„,..:::::-..i.. r.,:se .- .::::::::,...--...,.::::,!,:-.:-....i...;.....:.„:-..,...:,.:::-..,.-..,i.f:.-i,,,,,...:,....:::,....;.:.::::::::::::::::::::::::-:-•:.:::;.:::.::::::.:,:„:„•:,,..„.::::::::::•:,...:,.....:.,,........,......::::.:::::::::::,....::...: ::•.....:.. .:.-..-::::-..::,,y,:„.:::...::::,.........,::::::.:„:.:.:-...„....... wl-,:... :.::..,•:::„..""„:.:,.....,.:::,,,,,..,.:.,.:,........,.,.::,•:::„..::-.,.:.::. ,-.--,-.-:-..-:-::.•-......,:.::::,,,,,:c,,,.:::::.:,:::........„-:„.....,„...,..„..„.::.....:.„...:,.:•••:.::::..........::::.......... ......,.....:.........,........./...„,..::„.....,............, • , . Appendix A: Plant Species List Indicator Status Common Name Latin Name Trees FACU big-leaf maple Acer macrophyllum FAC red alder Alnus rubra FAC black cottonwood Populus balsamifera ssp. trichocarpa NI Douglas fir Pseudotsuga menziesii FAC western red cedar Thuja plicata FACU- western hemlock Tsuga heterophylIa Shrubs FAC- vine maple Acer circinatum NI scotch broom Cytisus scoparius FAC+ devil's club Oplopanax horridus FACU Himalaya blackberry Rubus procerus FAC+ salmonberry Rubus spectabilis var.spectabilis FACU red elderberry Sambucus racemosa ssp.pubens FACU common snowberry -. Symphoricarpos albus var. laevigatus facu red huckleberry Vacein um parvifolium • Herbs OBL different leaved water- CaIlitriche heterophylla chickweed FAW- largeleaf avens ! Geum macrophyllum • FAC miner's lettuce Mvntia s:'benca OBL water-parsley Oenanthe sarmentosa FAC giant knotweed Polygonum sachalinense FACW creeping buttercup Ranunuculus repens var. repens FAC- three-leaf foamfower TiareIla tri foliafa FAC piggyback-plant Tolmiea menziesii FAC+ stinging nettle Utica dioica ssp. graclis var. lyallii Grasses • FAC slender bentgrass Agrostis cap:llaris FACW+ tall mannagrass ' .. Glyceria data FACW reed canarygrass Phalaris arundinacea Sedges FACU Dewey sedge Carex deweyana var. deweyana Ferns FAC lady fern Athyrium filix femina oar. cyclosorum NI licorice fern Polypodium glycyrrhiza FACU spreading wood fern Dryopteris expansa FACU sword fern Polystichum munitum i • • • C :TA FORM Plot#: ,7 f ROUTINE ON-SITE DETERMINATION METHOD Cowardin: ProjecVSite: 4rf,'7 f J .G i Ik Date: %f. /70 ' Initials: 71 f - Slate: WA' County: Norm Conds?!Disturbance?: l/ i ( Approximate size(acres): < 1 1-2 •2-5 >5 COVER cuss ' 2t2.tgsjs s 4 D-7s-E2.5 .I3:2550�+37.5 6:>95 973 VEGETATION Cover Indicator Cover Indicator Dominant Plant Species class status Stratum Dominant Plant Species class status Stratum 1. O M Mai,i 1' �'► -Ci 14 11. rGi0 1 e I F' ( . 2. !i('e 6 r J rk Gu'f F} 12. i/ (a t41"' f Frex ite_ 1 3. %(a_� o� �cr 13. VA�/'! 1'' r'r7C 1� 4. /"A ore- x f- S 14. J Art- k -V AitiA T • 5. C--41011 lilt-:- 4- .qa,,_ 3 15. Knipp 'TWO J 6. 3; , j e. ,_ (.A s 16.`-- 7' Ain't ..11ai�0 -l/ _r-lif.- _,(` 17- 8. : /-i( olaMI rk-VI �7 18- 9- ' a • _ 19. ' 20. •• 10_` .,4,; C( W(� ' ( _ J LA li. * %OHL,FACW,and/or FAC 100 =H (0(.0 .S . t oco =T -TOTAL . Hydrophytic vegetation? Yes No Notes: C.d a _4 - . — SOIL _ Series/Phase: (from SCS maps) • Histosol? t� O Histic epipedon? g Mottle (Color) t,�g 11 Horizon t Soil Depth 1 ►r • Profile Matrix color 2 Texture L i • Other hydric soil indicators:: .> 0,,&1111e,A • i' Hydric soil? No • - i es, Notes: -• ' '-i HYDROLOGY . • Inundated? . Yes (/ , No . Surface water depth: - a —a/1 Saturated? Yes NV No Depth to tree-standing•water in pit/soil probe hole: List other evidence of surface inundation or soil saturation: 1_JpJ( L j �i i 5p /•a(,• Gf Wetland hydrology? gp No Notes: yi . 0,.. JURISDICTIONAL DETERMINA�wON AND RATIIONnALE Wetland? No ✓e91 S a'V/ A v c141#(42 Rationale for j •ctional decision: I / WINASCIFORkISPAtarOW 13 I . wLu L' . • D bTA FORM Plot#: r1 _-. ROUTINE ON-SITE DETERMINATION METHOD Cowardin:T_.._._� Project/Site: )ZDUI Il,O(1 i 3-- - Date: I j- .3(4,,n ' nitials: C-c_. 'Air-- State: County: ;{ Norm Conds?/Disturbance?: / Approximate size (acres): < 1 1-2 2-5 >��+ bb COVER CLASS S�6p 6� 6254iS I-MI.NS :2sso-.37.s 6->95-17s VEGETATION • Cover Indicator Cover IndicatDr Dominant Plant Species class status Stratum Dominant Plant Species class status Stratum 1. )Pf h /4 - . Z G14C4-5 11. yffik, > ; 1 Fr%. 14 ... 2• . Itt r- f (al- Zr 7L 12. rA t, �, c ) u 43. 64'r;'yv1 .MM-<.. ) J'hair- 1T 13. (LIT e v t� l flea, Ai 4. 11M 144•P/1 L G 11- 14. Ac-e r C i t C_ 2.... - 5' 1 5. s.i2r,4i1/ Yltt'1Z 1., r-i9cuJ �' ,s. �-I�I vt 1r��x' 3 f'�'c. t- 6 ►r x4 L ( 3 Re 5 nol y W)v(A_i Z_ }t�l >•� . µ 17- akrt 1 I 8. �14A, +C t' 3 —. .,grt f 18. 04 e)rA ..S 4t.v4'1 I 061. q. 9• 1Zte,bto rad G \. CUl, s 19- .t/0.CC.. rdv't1 \ FO((A _5 10. -41-41 t t- ► C A 20. Tfrikt faro') • l Rw He 1. %OBL•FACW.andlor FAC C -H /(O 0 .-S 100 =T If •TOTAI Hydrophytic vegetation? Yes No Notes: . M • ,S'9` 6 eLg �.. 6 ` i SOIL . Series/Phase: (from SCS maps) ft- ' Hlstosoi? Histic epipedon? Mottle A� (Color) A rat►�j / , v Horizon tt Soil Depth . fi -l t r r 5t-tn1L 0.,..., 4 FA.Sa r) Profile Matrix color ii) :Jf( l .� Texture f /G ki E `3/ 1 '��Z- SI Other hydric so In.icalors: .. Hydric soil? i No __.._ </NTr, se. d�'tl SYV • Notes: • HYDROLOGY . Inundated? Yes / No Surface water depth: 0-- 01 i Saturated? Yes `/ No Depth to free-standing water in pit/soil probe hole: List other evidence of surface inundation or soil saturation: Wetland hydrology? es No • Notes: JURISDICTIONAL AND tog Wetland? all No / (i 4 1 / v-e.7 Rationale for i •tdional decision: /• r oq y wpw5ceOP,SNtArOpl p R.- 0 %TA FORM Plot I: t't (C ROUTINE ON-SITE DETERMINATION METHOD • Cowardin: •- Project/Site: c,' I pl Z}iN�& ' Date: 1 1 Z; lq �^)- /SSG • State: �(,Q County: k�GJ Initials: i i , size (acres): < 1 1-2 2 S 5 Norm Conds?/Disturbance.: \ •:Approximate,^( 11 Flail . COVER CLASS lw 11:t1s�is 1:in n:6IF I VEGETATION .25.50.37.5 6.s 95.973 Cover Indicator Cover Indicator Dominant Plant Species class status Stratum Dominant Plant Species class status Stratum 1. Pak q.4tM - .f(!lfA .l 9 '11-C 1-111. . 2. Aly v ✓bra A • L 5 3. flu 1 S yutfok v Aka 5 13. • 14. 4. • 15. 5. 6. 16. 17. T 18. B. . 19. 9. 20. r . 10. • • r—: e T 'OQ TOTAL •• %OBL.PACK and/or FAC `H S 100 . Hydrophytic vegetation? Or No • • Notes: • • SOIL L ['�` 6 — Wl y� �� Series/Phase: (from SCS maps) eN-tit. QQt 7 loti III/'� l- Histosol? �/�,J Histic epipedon? Mottle (Color) 1 Horizon 0 /Rr r Son Depth 7 Profile .Matrix color N O I Texture • 04�� •— • • Other hydric so -•tcators: c 64-Gn 1 • - Myatt'G ` 1 s & lvv oN"f r Hydric soil? OP • No Notes: , • HYDROLOGY ,1 Inundated? Yes Surface water depth: t e/r Saturated? Yesgill Depth to free-standing water in pit/soil probe hole: /4 f ' List other evidence of surface inundation or soil saturation: SC+VI/J CiY i i f��� 1; 9.,E - kt tti4. �L2, '`e' Wetland hydrology? iiialo No • I 'C411`t .clIA f of t t iA ON !/L Notes: JURISDICTIONAL DETERMINATION AND RATIONALE No Wetland? igIP `C. V 1` Rationale for diclional decision: _- • wPW6L-FOa 5.r..1 rO5Yq • EXHIBIT L EXISTING SITE CONDITIONS jir. r r +I/ 1 1..i` i,+. yy r 1• 1. , J L. , tr :r r i ,. 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