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HomeMy WebLinkAboutLUA98-090 OAKESDALE BUSINESS PARK - RENTON, WASHINGTON - PHASE 1 ' "'' ' NORTHWEST QUARTER OF THE NORTHEAST OUARTER OF SECTION 36, / . zmw In TOWNSHIP 23 NORTH,RANGE 4 EAST AND THE NORTHEAST QUARTER I OF THE NORTHWEST QUARTER OF SECTION 36,TOWNSHIP 23 NORTH, \' 9 �ru, as RANGE 4 EAST,W.M. W t�pj CL O CITY OF RENTON,WASHINGTON Ak f . q e Q Q ® ai 0 3 r— E 1 - SURVEY DATA: / • p }ZnGypS °°s °T 1, .zoo 0 . 11 .CCM Of TERM,pMMENf ND.,9Ix.A OE COURT 3 PILL SINNWD 6ROS DEE SWIPED 1T-f,2 19937 VI ME ,•., ., f r 02.10TE MEW._.OM NORM SEE w S.W.43RD STREET, a•••: _ I{ LEGAL DESCFpTIOPk U Z ONES YE PL2 MT PET NSFSaT 41pD SD NOQ6ECNtt, / Mrwl le Q ELEV.-23Af FEET / •4 / TM Vert T fret in width of tM relieving travi bete property. -. ' Moapvtim Pe xe of rbwst garter of t.Northeast Poster of Section 36,Township 231Mn, �TS� • Eos<, Pratte Meld.,in Wing Ewity,Washington.desviMil a fellNiaartiMmows NOM 191e "J ♦s/� BEGINNING at a pal.on w North sib of S.V.Ord Street Mi.is 943.04 feet East of the f of Nano Menu Doiati[OM Clain No. 3, n Section 36,TomNip 23 North, Ei. / ! aoeger4 i,Yi I Mat.6ridwn In[Ong Conk,Vmhi,q�il BA86 Cfl1F� ��I I A ^T- A n I n ; f' ey• /� 010CE Lest 3J3w feet,al,the North side of said.trap y •"e , f 1 n..:L_ �\I,41 v / / TEIDE Norm 56E 16 fest to Spring wok Shah Dniram Mt.N.1 D y �X NM 19e9%199h ' TIME Westerly,aloha be Muth side of said Mack 3M,12 fat to thnep Eat Ilse of o Movie tract 1 O Z ;1 """f- 4. KK a eaozded In hlua a Deeds,41M 6 61NN11G,'h,Veshlngbl Y O � � , y,alwpmd,w,n21FM So tM E. --_ \`�\ f for'UMW. W pooh V.Mra S n.. ed in Wlry Can y Sae ion Coo<C m NwMr et 2oe11)-T Q 'Z, n __ c9� � , ra.Mm,ngwxv 3M sweet OOr� CJ WP'•1 o?-.7° _'� #... �'�.77S�Q' �►�\i���/— 3 Pawl I. gi L 'dgE Pat pu'tion of 9re Nontheest i.,,ar of tlr Mortleast Porter pf section x.Lavinia 23 Nvth, W 9 8 I """ r• - " IOrpe 1 Enst,vi Plurtte Ikfidi6n in tiro Eailnh.W6shiroton,dwsv'IMe as felloo Z [ E _-___ '''`xa. "~�,••:�__ ----— — '" EDINNING of o poi.on the Nei side of S.V.OM Street Mi.is 943.04 feet tEast end 30 feet Hi V�TTiC .IN W M —— -�" :' er ` __— North of 1M Nageast pier N Refry Mvu bmtim Lard Clain M 3,in Section 36,TwrW Ip ", 4 WA °' V _ o M tRwpe 1 East,VI 1Partb Ikridia,in Niry eanty,vuNirymnr .2 rE ll0€ 35104 foot,along the North aide of mid street! u� " i 0'•"e.a. •' -- ""Y— Q 110€ North iy,41 heat to WIT Faok Jlwph Palle Dimly lb.11 I W MPS Westerly,plop thv South side Of sold ditch,734.12 fat to tM Lest tine of a 3-me tract " "/" I SuB-PARCEL.Je !--1 trade vinslm a receded in Mime S®of DMs,page 207.In Kln9 Canty,M.in9tom o I- tr 1, •" �;,}"' I r QQ� MK Swtlerly,along mid tin,472.1 NM to the POIM LE FELON 0 I / _ . 1 i L)I I A ^T- 'I § 95 .., iM Westerly 93 fat thereof in nMhl aM IL� W i1 J.•,a• - 1 yy I 1 r 1 - 41 L_ I SlJ ]( / . 7 Y E® tat portion Marne cord*in KIro Canty Superior coot Comm Niter 31-2-W1u-7 ��ff// """"-•"" Q for a...of 18 ]V Street Q ...'� _""" I §I MOM=LW II 0 Meal 5 `• / 'NOT A PART SUB-PARCEL IIVC. l I Sls-Pica 1f § .__ p 33o-lrr feet of the nwmm�narxe or Me Northeast garter of Section 36,T /"• J J 1 North,Romp 4 East.Ili ilpiette Meridian, n thing Canty,Wealngtw ping moth of Sprirg Pooh 1! r r • , %% C 1 SlaQli paimpe Dimly 16 11 tl NS 1 %'/. i ,. x , L I SUB-PARCEL'Ke EXCEPT tit portion thereof oar xW 43rd Street riyd-afar,and sal / . / J z I I DEEP;iM semth 2D h.t of mid pani:a�iaey�ea-y-f ro��tM eih of Rent.fa.Leming of IV.Ord ) •/ J J 3 S I y Street M and recmdetl under baMlnD Nubs Saltgll oM .xt / , , 99ii ECM Mat portion thereof.Meats in King Canty Smperiw Curt Cause timber E1-2-De1t7-7 • �J'o Y 6K•pa.4� fa eidmiro of SW.Ice Street * Avg - — ! _, ^ Skew et,. r h vl x �2 /��.� �ra'mw JI rJ '2414 1 Tint patiw of Me Nonthast gwrYr of the Northeast pane of Marlton 3S Tmfprlp n Nmth, 8 !; Hill o- de�I6ea2llea lore 1 Fust,Vi llonet4 eaidiaR in King County,Yahingtw J -- - --- _-- - ------- - b S.W.43RD STREET —--- - EL]xxlrG w<M Ni.thh Pin.of th.meitr rood.t a w,M thiu a 943.w fat East rd 3D fa< g 'fi North of be MNMneast cvar M IMy Ana]oa<ion Lead Clain Nth 13 in m,tl iawmN ip anted n s i -- ' � PENCE Math 03'19 DOT Eat 195.8 feet,nvt a less.to the centerline of Pie W IMD[tliftlil I�I�� PENCE,el,mid ditch lice,Swth 66•m'IT Vest OR 93 lath 12 q sop op RE'.tl!'103 K het to the North I ice of saidAT-NV I I b11F1fE Lest..lap mid road l ice,1!.R fat to I1NIKu �3 N N DEEP right-orwy for m a si id dMoge mil aM N.F L INDEX OF�Fi�ET$ ;P:idm`i�az a""rerftr`°ntlaeeAntl In KIro Canty Simla'cart Co m Ember e]-Noely !-7 s N g ei 1 of 9 COVER SHEET 2 of 9 ORADINO/STORM DRANAOE PLAN r..‘SIAN 0►•'0',. 3 of 9 GRADING/FROM DRANAOE PLAN „1'e� . thi -4.. 4 of 9 GRADING/STOMA DRANAOE PLAN � _�V ;:.. W 5 of 9 SECTIONS AND DETALS PE�lµl6'$C v tia I CALL BEFORE YOU DIG 6 01 9 SANfTARY SEWBT PLAN AND PROFILE 96dL Ep ` QP-er f 89 b i -_ a 1-800-424..W:T•9 7 of 9 SAMTARY SEWER PLAN AND PROFILE - II ,I 8 of 9 SANITARY SEWER PLAN AND PROFLE REoareoED CITY OF RENTON VD m Lew K"f RTOT9 � •--._ __-_--.__--..__ a MAO/AL MEf•AWTMN33T oP rIIBLIC wofacee �� o,1 a xlnEco.Jan•,R.,.a w E oR EE 1 NE rd Kr w ew ao o P N W COVER 8HEET "'Eft,ono no n, oeN Nx,ears oR rm ht P T x. Ti of 2 TEMPORARY EROSION/Sf AENTATION CONTROL PLAN ((tE1W TS S,w1YPRES 1mcWDE MENNG MIT LIM s N. -tees life M.POPO.° W _ PE oK MIMES fLICIS an. MO 'iMm05Es u 040014 on NEC T2 of 2 TEMPOAAR"f EFROBpW3®1+6JTATION CONTROL NOTES AND DETALB _IPL_ mem •1 = e mdLIC0 LIMO PUNS ME BMW UPEN E 'er PLS. OF WM..m vwxTpN wawa we anNae�[ rex woo. ,ro PROBLEMS a ,o M.P.MI dry �__ eau.��p'_. ,anew, W wlaneeiaL N> ordeal If .leis --- _..... --- .aT_l_w._e_ m Mr PASosxfwo05011,n,cnamNlm691,za,.i M om Puna o.ti,eiiae '1.1e Sean,_loD.n..Kate holy'Daum is, 1e OAKESDALE BUSINESS PARK — RENTON, WASHINGTON — PHASE 1 GRADING/STORM DRAINAGE PLAN w r-30• S 0_ . ' ‘\\I ' ) 1 'v I i I f w! % < � �_ Ne i '.. ' k4t . '''. . � I Ct 3 ° . �� K •-- --------- ,} - s/ i oLF IS` II . de � V �:'""'"' r '.• .r0 f� � [.aa�tr coc , 7, ./.:.•:..'•;'' , 1.,„,,,,.. 4,, 4, ,'oril !ii.-• - g O z E 1 Q' 25 IOUSTRPL ertoRam SETBACK ��/ .. •nfi�r roro)y`P�/ 'J�'',° ;' uan(iY cwc s7 ' ul IIL zp Tv WOE ASPHALT PEDEBTRAN TRAL p r o ssw � + ! / EX CB CC W u F E CB IY coc < z p sa BNorarf sETencx Tz / ; n J '� ). 'O. 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REVISION I err W1E APPR�� rws. . �+W9 I P.E.Administrator ye. - au - RENTON,WASHINGTON i r \\` `:\ • %\ m V !1 )i `' \`\` `' 4y �,4e \`\ 1 I to ' \� \ i `\ I 4�... \ 7C \ CI)It i ° ,� j,, �\ off . �..._.. .. ...\\ \\ • .... . \ > m tliN / \\ \\\*\ \\ \ 33 co 1 ' Z (1 o A i\ \', \\ �\\ f. \\ ) I ` O `\\ \\\ \\ ` n(D A i 1� � G� 33 1rrl'NIck ' ' ' i f iq 1! 3 t�O \\ . \ \ \ \ DJ G r \ 1it VA IP ` ��� . •\ . r.— 1 E1 r...,, I ,'�°. -- —�aar mow= —`-- F I \,,,,,,,, \ \\`\ V! r—: -\—'A\ 4 ii .. ♦♦__ yy 1 1 ilk, , 1 MATCH LINE SEE SHEETS 2 AND 3 nil kit 10 Is to !L " ,,P ,i, ., 1_, ki n :Et,',., 0 1,',1 Nit„,,..," G844 TITLE LOCATION, .se, Q' \S� 18215 72ND AVENUE SOUTH i G 6 D £ . - Z KENT'WA 88032 N.W.CORNER OAKESDALE AVENUE S.W. I_ 0 °,_ (206)251-6222 �•' (2D6)zst-67ez FAX OAKESDALE BUSINESS PARK AND S.W.43RD SlritET ( m c ONE ENGINEE/UNG,ION PVNNK, PHASE 1 .D�§ r'oo no+6`•. 9R.fllNc,ENVIRONMENTAL sEx+c>:ss RENTON,WASHINGTON I ' B.C.E.JOB NO. 59 1 . 1r • 3 7F:RD f ..... ....... A a i • • I i ' i i _ .... .. .. laol=a>®wtt. .. P-GFEPJ ... _ __ _ ... ...Joao _Bi O • n `0C fr 16 a° a POrDM0U0 PENEIFR P/L 8'HIGH GIMLN NAB );I SONX,-90 IFfm•V :.. I i ; I E I I YI $ :-;:'"_. .I.. Pt01V1•JI VWDC•I.' . . .': 3 ati illp A,_ ; E ENGNE o -....... .:.:_ ..... .... PFRAMEER 3 CPAIE ELEVATION — ..... PFR PLANS NOTES: A1�d O SECTIONPoN 3,b fJ PIPE SIZE a SLOPE.SEE PLANS. A 36YY C __ .,a•N •,i , COMBINEDCAPA NOi L65 i1W1 W '•9 FASIEN CRAN TO FRAME • B J) METAL PARS: - ��� A) COPAOSION RE56—OR.__ 9 EpL-1ry9pILZECI TAPE II. 0q� 9) oPNHEE ASPHALT R ASTEPS R/ENT SEPAR a iz 6 ....I.. .. :-_':'.'::I. ...,.., at,V AAR A) L1.FANOUOTT GATE ISNVISIBLEFRO FFSET SO: y .,..,........ ,�9,� 1 EATION S Ea 02 P. of Pr,ESE'x 1w�a :..W MO _...a or ��� s)aiuelwwN SPACE Is cLFSR of N { 3' - C)WNE IS OC RO OTF CURB. .2 • .... 1. ...i i• ..i.....r 7: a x)STRUCTURE SN41 BE a TYPE it y g . .. _... ..::." CATCH BASIN MINIMUM. �,, W I �µ11m 3 j 9)Ou) .SIU.ON N _ n i!N p p m ... ...,_... ._:.:. ..:_: i :..Ipgyy��t -Ic. i -— — —..._ CULVERT NC.C)OTHER DEVICE i 1111111 x S a f APPROVED ' ENGR z \'ffirdirpirOkOE'Y .. '101.1 . .., L J f/8'DNM. : EX.•MGE•3EIIOra .. j b� ' P.owero alas• _- _ L1112.11.11.111.111 c ........ O oEeeoEa CITY OF RENTON : ..., x!l ....1. . .. ... i. '....' FORAPAIOVAL OEE•APITML ENT Or rUHI P9 C WOKH • :.. .. 'AEI fplll EUI/CE f1-1�3 .. ! TYPE a E IF.�•FLOW MANHOLE H1 •• . .. .. YA1L V.L kl.On $EC11O��e♦�� y .. ......: rlE fog u-ms NOT To VAR BY SECTIONS AND DETAILS ^^ 0 SECTION ° —An d me , nt nem ,•�'� � � .ve.1-[•Ictrl Ianaooc___wc_ LLI N.P\s,nVPwCJ\S91,\.Ncw EMO\re1I,A35 c 5Arnn.:035l3,I298 11.sa Sm.1.20&mw:AO1x zs91128. p ,aaaa VI .we w2 •""m m omnls>t .H!r .�n�-_ m I f 1 i g OAKESDALE BUSINESS PARK — RENTON, WASHINGTON — PHASE 1 W *- SANITARY SEWER PLAN AND PROFILE , I + , na . 1- n . r �. �;..• �'/ ..... '. • ' yet' , J ___ n - m _ EN.t I�1II1 i • • ' R I /� `. ►�—.— i/_� .. e�?2 7a ;,.`,,,,,, tf _ ..l v y �a}„`�� �—�_— 4y 11 II_f9 8 II i IX CO isY'CPC miel�ii v3 _ / F .'goy ��= d �i7 515 - t . .•�y.- , } lug n N eee2an r. 3. ... / I' r E•l.e2 tY O,IM:5 Q �. .� _ r9�H p " /, .v�.F'j'eFi T I I i it— :ikl‘ le;m MEie i/w \ `, I --dY_'_1 - I EII 'hi SO a I'iiI 1 �' f.[>4z 8 $ ;Iii:1111111r i w ._ . QOoc ss xx g si, •-• •-Ijrillti ' '}I E eg .: / ,.., ,.oe 1F r r�c'S r 3 eciR �1! 1 �� - II �zl I;•c°xc q cc Q Z �W p € ,•� . .I. t'=1 -t i!!, T- 96Ff1 A II,,....93(IY CO,LE,)'"• ii C'-'- i m�� r� g 91 I ,- - -�I I /\ (- SUB-�AgCEL•J• ( +1 (, ; II'IEX.C• ,r c°xc qqq 1' .1 ............e.e.e.e-ems ~ �� �,�%' ; � l,f. ' I k^ 14 �:. I� E�13. Y COP q� n �7/-\ L_ I 1 ' o to hi' ¢ SEE SHEET a r CONTNUATK A 1 PLAN vev OF 13M1 SEWER sue �r , i / ', I IIII ._...� - __ __ ,,• row• r4vc2 n 14 H e•8 �,-H" ,Y PROPOSED GRADE EX GRADE• n 11 n'8 / .� T ! 1 • . .. I 111pRRR� Y N N SS I 'i:• .. .. I I i I 1 j i I i I. 1 % A,N .43 042, g�N .it I I I I I I I f®i1/4i l i aE�'` 111131 VIM 4.._ 3'Rr .....: ... '_ .. .:. ..� DATUYOLEV I MIRESA L°nI I 0b� �e F ......[mow g:Wn ::;:to'(e•an gg, I E.e.w(IY w) (e•Ix) � STF,6.DD.2 s nr wx_2t.o, FaAeV CITY OF RENTON [i b°011n FOR APPROVAL OEFAFfTMENI"OF FUS-1C WORKS f IN) 144.00 13+00 12+00 11+00 10+00 m SANITARY PLAN AND PRO .E g ., (1 OF 3) m SANITARY SEWER PROFILE VIEW WOW WE In/E8 wow q Ig e - o _.g w nxe AS ISS s, w f2e:P:\SU5%FRN\5911\EhO86FUNG\59,125PI.°W0 C,,,,,i me:03/18/1011e 11:21 Scale',-20 dmn,reb' Z5911212591,2E1, ,u°"` ggy, "ma` .1 "•°'""` `" '". PPP—SS—TTTT ..» —.$11.1" .ara1s., CITY OF — "' * tin RENTON or -SANRAFlY SEWER PLAN AND PROFILE - 2 . "o. I Rens WI EWE E A1a11 .� "'� r^pO R'E'r tO tAt,o1Of RENTON,WASHINGTON 4 ow 1 V11 \ ¢ ... \ 4 e \C , a I . .\ \ \ 1 \ a^ \\\ \ — g ( : • m s \\ \ . \-3, . , . „.. ) ti , r \. \ \\ �. ,.... (/ ) 1 \' \ t , , . p \ \ g I 1 \\ \\ \ \\\ 8. 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(206)251-6222 hR l (206)251-8782 FAX OAKESDALE BUSINESS PARK AND S.W.43RD STREET 8 PHASE 1 , KAMA 0I ,,s"cmEEP9 CD NDD+ r Tt MIMES RENTON,WASHINGTON SCE JOB NO. 5911 , 6 OAKESDALE BUSINESS PARK — RENTON, WASHINGTON — PHASE 1 ii in n I' '� SANITARY SEWER PLAN AND PROFILE a ,10 _Q z T�0 @ O2 e E e1E T 6 FOR cOHTWAT10N OFBAP.9EYI91 LINE _ LL� II('1 3 ` V \ A \ �;.\ wzd � .) ` ` \� '� SUB-PARCEL'JPi4F)C�'K• r 3 a \� \ ¢ z \ \ \ 1 VI Li e•re ee r •, 89M1l4 O 4 J cn N, n .,-, - ,,,\\ ck,.. , ,.-. ___ .. , ,., 8 • e '\ I. p-� 1 �e'GA it ( 12 \ \ \\ roo g 'J I \ / -) ¢ W `^ aiox %` L�� \ ,ice1 Al ! E � �, �..... . . ....3 .. .�....... ..�... � ME MEET FOR OF BAN.BEwsi LIE 3PLANVtN WE a 4 c ji Lc".......:. . ... 1 , i i I I I i• i 1 ..�.......aria........'. 4 6 a ve 13y 1 ..a i gY, 31.'�. I �._- .--1_ •-`.'..- ,--.._.`;�` i 1 i rP. . ..aria I' 1L... ' '..� I-... i af• ar :.ice. ' I 1 1 I I I ; i 1 I I I 1 I 1 3 !!!Y i g b \ . ce... m mt i 1 1 i I I I ._ �.t H IN i �] I I i 111T1,113C1�,i girl m I i I. ,y ... �i �,�D �• N eei ot xY R' / Jy Wt 4. ... ' i ice '... .. ...,1........... . sf `L, r.rt1c+F Z * ' 15d i OX ... I...•... { I I I:' ! ... RENTON o�g I 1 I I I I 1 ' I 1 ; CITY OF : . ... I far: I I. 1 I" 1 J 1 ' ... OSPARTIWSNT OF 1.UE31_10 WORKS 9+00 10+00 11+00 12+00 'N- - - . SANTARY SEWER PLAN AND PROFLE SANITARY SEWER PROFILE VIEW ▪ - (1 OF 9) mow 0-- nee RES own _IV- 1 g 1-29 .. ...pp .. Rae..�__- .>w.J0_ t Ran. race . (f 13.:P:\504I047J\52111FN;NEr Ic\591,..,..21 11,b1t44.n3/IB/1994 11.2. Scats 1.20 Joe:n IS.. Z.,',,,,,,,. �p �• --- �T_v-6�— , BTOFMWATERDRANADGENNTACM NOTES AND DETAILS 3 I. BEFORE ANY CONSTRUCTION OR DEVELOPMENT IG1NIiY OCWfB,A PRECOSTSETION r MEETING MUST BE NIOD NON IHf ow OF REN ON DEPARTMENT O PIBIIC NORM ai 13 IP 1 i 5 AEOGN ENFNFFR. 1 2 ALL unolNUCNON SHALL BE IN AMORONEE ROTH TIE•1.6 STANDARDW N SPECIFICATIONS FOR ROAD,MESE AND ROTCRA CONSTRUCTION.PREPARED BY (n WS.AND THE MEOW KRUG WORKS ASOCAIONS(APRA).AS AMNOD BY SANTANY SEWERNOTES Ate 9PE#ICA710NS W I THE cIP OF RENTON DEFAANENT OF p.m WORKS. ALL WORN MATERIALS TRILL BE IN CONFORM,.CONFORM,.WVON THE STAROUOs AND SPECIFICATIONS OF THE Of'OFRENIOH NNY 3 ME STORM DRAINAGE SYSTEM SA11 BE CONSTRUCTED ACCORDING IS IRO APPROVED 1 A OEPARTIENT NC ME LAT.EMON OF THE MOOT/APWA STANDARDS AND SFECIFRAT016 Q PLANS NBCH ARE ON FILE IN THE DEPARTMENT OF PUNK WORKS. MY DEVIATOR W d FROM ME APPR[NED PLUS WILL REWIRE WRITTEN APPROVAL FROM THE CITY OF 2 DE HOURS OF Ape(IN THE STREET RENT-OF-WAY MALL BE TARED IS UO A.M.TO 3:30 P.M.ON WEEKDAYS(MESS Mfr.DEPABIMEM OF PUBLIC WORKS.DOOR ENONEER OR STORM WOW UNITY 0RERYf£APPROVED N WRING BF THE DFRIRSAIIT OF PUBIC WORKS AT 2E-2620. ALL STREET ROR1NFR PARTIAL Z I. A COPY OF MESF.APPRO.PUNS MUST BE W ME SORB SITE WHENEVER OR FLU,SAIL BE APPROVED BY THE DEPARTMENT OF MCC'DARKS 24 HOLM IS AOVNCE TAO TOILE DEPARTMENT.EJJo CONSTRUCTION IS IN PROtR'_SS. 3 iNE DEPARTMENT NA OTT SHALL BE TOTTED 21 OURS N ADVANCE CC J O ALL CONSTRUCTION SOUL BE INAL1'%MOYMZ'VIM STAN6Yi0 SPECRTCATp6 f9R MLMWPN R91C Yde6 CONSTRUCTOR. Q 3 DARN SHALL BEeS INIESS OTHERWISE OT OF RalVON, � CE BENCH..ADE1ATOATE NOTED PREPARED BY IWSNGTON STATE OWNER AAIEREAN PUBLIC WORKS ASSO ATION,LATEST EDISON(APR)AND C.6 STA NDARD O 111 FNTOSTANDARD SPmf%%ICNS. us S. ALL YIMMEMAION/E%xION FACTURES MUST BE M OPERATION PRIOR TO CLEAN 1. Nl.LOCATIONS OF EXI51NG U15R05 SHOWN NE APPROKTYATE AND IT SHALL BE THE WNTRACIOPS RfESPONSBLIIY TO p Q AND BINDOLT OUSTRUCOON.AND THEY BE 0010nORLY MNNT CI.UNTIL VENN TIE TRUE AND CORRECT LOCATION SO AS TO VCO MINCE OR DISTURBANCE (C Z 3 J CONSTRUCTION IS WNPLEIED AND THE POTENTIAL FOR ON-SIE FIOSON NAS PASSED. 5. A RECONSTRUCTOR CONFERENCE AEO A 24iIWR TOME 91011 BE RE1000 POOR TO STARING NEW CONSTRUCTION. B 2 Q Z ALL NEONHON/OflFMYIN FACTURES MUST ff INSINIID AND IN OPERATION RIM RI SHALL BE ME CONTRACTOR'S RSRN90E11Y TO SECURE AL NEESS.PERMS PRIOR TO STARTING CNTTRIICICN. Q P H IN OJW WCIIGN NM ALL LTUSTRUCTKIN ACIMtt UNLESS CIMERNSE APPROOFD a (INSPECTION NLL BE AGCOWAIRD BY A R£PRESgITATN£N THE CRY OF RFMON). R OWL BE TO CONTRACTORS ((�)] BY THE DEPARTMENT OF PUB.WORKS STORM WATER UTILITY. RESPONS®N1E/TO HOIBY 111E MUTT DEPARTMENT 24 HORS M ADVANCE N BN:IORINO ALL CONSTRUCTION. ^ WNIRMIOR 6 SHOUT RESEOTIS F TSR DE MEANS,METROS AM TEOUFNCES O CONSTRUCTION N0 FOE THE SAFETY OF lZ1 8. CRASS SEED MAY BE APPUEO BY HYDH65FFIMNG ME GRASS SEED ANT11E,000 WORKERS NO MrtE6 OI THE CONMRLCION 91E H z TRW CITY O REMON ARROFD OSISTANDARD1 HIDES,SAIL BE SUBMITTED Bt A Q 2 WAIST P_ARCHITECT AND APPROVED BY THE DEPARTMENT OF PUBLIC WORKS,STORM J. IT ROLL BE ME RF�ONSBOH OF ME CONTACTOR O OBTAIN STREET US AND AM 00 WATR UI TM MU R..POUTS PRIOR TO AM CONSTRUCTION. O 9. 01 PIPE AND APPURTENANCES SHALL BE IND ON A PROPERLY PREPARE FOUNDATION R. PIONS APPROVED BY 111E Ott OF PENTON,RMIC WORKS 05 DEPARTMENT SHALL TAKE PRE R CEDCF OVER OTHER PUNS. -.I) 1 M ACCORDANCE MM SECTION J-D2.X1)O TIE CURRENT STATE N WASINCTNR A COPY OF RIM APPROVE,PAS WC BE ON DE.BB SIZE WHEREVER CONSTRUCTOR 6 1N PWOES. STANDARD ACCOR ANCE W S FOR ROAD AND BRIDGE ITHE CONSTRUCTION. MS SHNL INCOME 9. NECESSARY I£'ELMG OF THE TRENCH COTTON CR THE TOP OF TIE FOUNDATION I0 THE ONDNGIOR SHALL PRONOE THE CITY OF RENIOM MD AN AS-SILT DRAWING OF TIE SWOTARY SEWER VEER WHEN NATE.AS WILL AS PLACEMENT AND COMPACTOR OF REWIRED REDDING INTERNE HAS AB STAMPED NC SIGNED BY A ICPSED PROFESSIONAL ENGNFER OR LICENSED PUFESSONAL SURVEYOR. _ TO UOFORA GRADE O HALT THE ENTRE IMOM OF TIDE PIPE AC.SIC OO MO ED ON A MEOWS'DENSE O PVC BASE ALL PIPE ADO.STALL S ARM CUSS O• IT. S aeYL SHALL BE PLACED EQUALLY ON BOTH SKIES OF DE PPE N MFRS WRH A IAOSE AVERME DEPTH OF 5 ACHES.4 INER THE EXCEPTION OF PVC PIPE ALL TRENCH BACWIL SHALL BE COMPACTED TO MANN.DEPTH OF 8 ACHES.T 0 LY WPM EACH LAYER TO 95 PERCENT OF MUOMUM DENSITY. THESE COBAChD € E.1 IMWUY 03 PERCENT FOR PAVEMENT AND TRW-NAM ESL AND Al PERCENT LAYERS MUST EMEND FOR OE PEE META ON EACHBESORE O RE PPF OR i0 M SORE OF ME IREMQI. a� OTHERWISE PER ASIN D-IS5J-J0. PA GRAVEL BEDDING STALL BE a INCHES AND PER MATERIALS TO COMPLETE THE FLL dFR PIPE SHALL BE TIE S.AS COO BE°. 5 fr'S0 O .BF ANO UNDER PVC PRE 13 OPEN COT RO+O OG55MG5 FOR MNY 1PEHn1E5 ON VESTING 11MVf1FD ROADWAY 51WL BE bGIOWID RR GRIMED Y 3 10.SOIL L STEEL RP AND AWMINIJED STEEL PPE FOR ALL OPNNN£FNiD6 ROCK AND MECHANICALLY OMPACIED. CUTS TRIO DC DOSING ASPHALT SI..BE WARM CUT MM BW N A Q ,- M SAIL HAVE ASPHALT II uncrir/T OR our.INSIDE AND OUT.. HOT LINE A LRI0.2TEMPORARY MIX PATCH MST BE MOM NEEDAIELY MIEN BMOWL NO COMPACTION. A PERMANENT O. Z �"�2ZET n6 NOT MR PATCH sHN1 S PLACED WARN 10 NY3 NA SHALL E PER COY OF REMW CIlRIE3TT STANDARDS.IT.STRUCTURES SHILL NOT BE PERMITTED WHIN 10 FEET OF TIE SPRING LEE OF NE! a- O U QAN 5 SIGN ORANGE PIPE,OR 15 FEET FROM THE 119P OF ANY CAMEL SAE. 13. TONI BALL BE CD OF HERON,US.C.AND GS. '6 EPEPE IL AU.ODOE B.LOOTER SWAM BE DEPRESSED 0.1D FEET 00W PAVEMENT LEVEL 11 FUR THE Z pSNRBm AREAS SHALL BE SEEDED AND MULCHED OR OTHERWISE MIALIIm TO THE SATBMIIOH OF THE ORARIAIR _ 13.CPO CUT ROAD CROSSNR AND ERISTING PUBLIC ROES-OF-MAY WEL NOT BE PREVENTION OF ON-BENT EROSION AFTER ME COMPLETION O CONSTRUCTOR. F. NL0WID UNIDO O SPECIRCALLY APRMED BY CRY OF RENTON OEPARD ENT CF RUBIO W(j� gT`H I ALL PPE AND APPURTENANCES SHALL BE LAID ON A PROPER,PREPARED FO.NOATION IN ACCORDANCE WDX SECTOR J-0230) W y( �� WORK.RESIGN PORTER. R Q 3. HE DIE CURRENT STATE OF WASHINGTOJ STANDARD SPELSICATANS FOR ROD AND URIC.CONSTRUCTION. DNS OWL INCLUDE Q af. 14.ROCK FOR EROSION PROTECTOR OF ROOS.DITCHES.WOVE REVELED,SHALL BE NECESSARY LEVELING OF THE TRENCH BOTTOM OR ME TOP O DE FONOADON MATERIAL AS WEL AS PACTSUN AND COMPACTION OF 9O10 DIARY ROOT PLACED TO A CRAP Or I FOOT AND MUST YEAR THE Of REQUIRED BmOMG MATERIALMEOW GRADE SOMO THE ENTIRE]ERGM OF DE PIPE WILL BF SUPFOMED ON A LRA M. FOLLOW.9PE61dlRM 4 NOES TO 8 INCHES/n0 PERCENT M J0 PERCENT DENSE UNYIELDING BASE PPE BEDDING OWL BE PEA GRAVEL a RECITES AB01E AND BELOW DE PPE •� W i PISM O S INCHES TO 6 NOBS ROK/30 PRCENT TO Na PERMIT PASSING;AND-2 IS. SANITARY SEWER PIPE SHALL BE POLYVINYL Ql NYL CHLORIN(PVC)RUBBER GA55D Aso!6 io NOES ROCK/10 PEIWOR TO 10 PERCENT PASSING. D 3034,SIP 35,OR DUCTILE AO CUSS N CS 50. W li a4 15.ALL 9U0D1 CC NG DOWNSPOUTS AND FOOT.DRAMS SHALL BE CONNECTED TO ME O. W UNIMPROVED AREAS,MANHOLE TO F%iFA'0 WWI0.N a INCHES AND NAKwuu le INCHES ABOVE Fr9Hm GRADE IN PAVED AREA, STOWORNNOE SYSTEM UNLESS APPROVED BY OE OFPAPIEEIIT OF R1BUC WOWS. COVER NUPE SLOPE IN ALL MEOW..TO MATCH PAW. E.-.1AS-BUILT DRAWING OF 14RS ORMNGE SYSTEM WILL BE SUMMEDTO RE OF RfNTON UPON COMPLETION. ya IC ISSUANCE OF THE COLORS CO CONSTRUCTION PERMIT BY TIE CIE,CC ROT.ORES R� NOT REEVE ME OIMFR OF ME COMMAND LEGAL OBLIGATION AND/OR LLWIRY OOIPLTED WIN STORM SURF.WATER OSPOOOM. FLAMER,ME ON OF °2 WO G RdION DOES NOT ACCEPT ANY OICATI N FOR TIE PROPER FUNCTIONING AND W `� WMRMDE OF DE SYS FM PROVIDED DURING CONSTRUCTOR , MAIELE ERNE AND OVER SEE OM NI.NB9 17.ME ONIWCIOi SAIL DE RESPONSIBLE FOR PRONGING ADEOWTE SAFEGUARD, I L SAFETY DENO..PRO..EONMENT.NOG..AND ANY OMEN NEEDED aMASIYRT(4•MN.) F ACTIOS TO PROTECT ME LET,TEEM,AND SAFER'Y OF ME PUBLIC,AID TO POT. PROPEI.T'IN CONNECTION TWIN ME PERFONWCE OF WORK CTTRRED BY DErAl CEfE gg ONTRACT. ANY VON N RIO DE MOOED RAM-OF-WAY DINT MAY NDRR PT .g El Q S MORAL TPAVFTC FLOW SHNL REOME AN APPROVE➢TRAFFC ONDDL PUN BY TE y RUBBER OASNETFD JpM15iRNRIC ENGMEERNC DM90N OF DIE DEPARDFM O RIBUC MORTIS ALL SH.TPao IN ACCORDANCE MIN ASTM C-44.3 SIE)3-3%MFORMR BM N g1 6 1 eIOF ME WOCT STANDARD SPEORGDONS 1-0J23,TRAFFIC OT..SHAM OWL5R EU DESPE IALAQ DRAFEES PROYGSURS NLL BE R£OUIIPFD B ME POImT UMATION 6 WINK Re .1 STEPS SHALL RE INCLUDED <N N 00DE IIOIfFR RORLIOI IRFAZ Y CONCRETE 104R BY PPE NC., nZS CORM DR NAGS PIPE S ECIFNA IONS . OR APPROVED EQUAL y i O g AIL MOM RAIN PP MAY E CONSTRUCTED OF.OF TEE FOLLOMIN9 NTFRIALH M1FS4 OA I b COT BE .CIFIm IN TIE RAMS. ALL PIPE AUNTS MST BE GASETED NTFRTTTR ANAL IF, 3IY�¢ MIST BE OF THE SAW MTRIAL AS TE PIPE NL PIPE MAIL HAVE A MINIMA COVR AS FY SPECIFIES NO SHALL BE AOEWATELY PROTECTED CORING COSTROTIOI(NEW TO TIE MAX PPE SEE-21•I.O. NmADO gi M.NFACTMER'S RECOYENDATIOS FA RINI.OAER FOR NAVY MINOR LOMINDO. LADDR_Sro.ALUMNUM LY nA METTLE IRK-A INN THROW 1A INLR DINETR PIPE 9VLL S CA55 10 AND 15-1. pOR CALVARIES)STEELORINRNH 2A-INCN O^NEIFR PIP SHALL B:CLAS 5O ALL IN ADDODAHCE VIM ISA ARCOlKJE, VE SHELFSTAIUND A-21.I(M C-51 ALL.MINTS MALL E PW-OH LEPUNICAL OR EM ET ��LaFLANGED(5-MOH MINIMA,CO.). � 'L1 9AORy�{N OAR. B mOEIE-A[IDI iNNIW]e INOI OIMETfR PIPE SHALL E NO+#INORODi 1e11 AIO � PRECAST BASE SECTION 1 9qA _! ION RIM RUT.OSET JOINTS COFO ION TO AST,C4(CUSS II) OR CAST IN SHELF. e MOM A INS DRAMAS PIPE SHN1 S REINFORCED.BELL NO SPIGOT VIM RNBR , ^ 5 i iiii^II^ 'W CASKET JOINTS OW..TO ASAP C-78(2 FOOT MINIMA COVER). C.PVC-N INN TRONA 10 INS MAE.PIPE,VITH 24-IWH TO A-I.OF COVER MALL z 'N- O IC IN.0MINNCE WITH ASAP 03034 SIR RI. - TAPIR 1 LLINA DINEIR PIPE, .�L VIM AST,DMA ER 35 SHML MA 35-1.EMiM1A COVER. JOINTS SHALL BE • S.MN.(TYD) M ,eeA �a�y� 45 h BASINCON WITH NA.CAROM MPVC EPI REQUIRES AC.LOURS(LE,CATCH NOTE: SiOAAL c"' "PL._ 0 0.N11CAL ONUGim RAIN VITA PIPE((;1P) ] 1 70.1]e zWl NAILTER SA0TARY SEDER RAIHOER 5141E HALL£ALL NTROR v-O-G0A6 R IRE MALL E 15 OVIE TINT 2 2/3[WH 1 I/1 ARCH Cd 01*11*6 WI TWI.CN =A eS,NOIA0VG IX4NNFLNa COATED(SF.MFD) ® II D INN DINETER PIPE ERALL S 14 GUTS NM 2 II?ICI x I/2 NNC0 OWNATIOL AT I A HIGH WINOS UEMAEE COATN4 CITY OF F��� REFER TO DETAILS 1X 11ES PUNS FOR AM PIPER U THAN 35 INCH DINETR ALL NASSR MC-ONSEAL OR APPROVED MATT ALUMINUM PIP MALL AVE ASPHALT TREMOR 1 COATING(2.0f0UT MINI.COVER). DOLOR OF COMING SHALL HE,MITE FECCE/R.0EO E HELICAL COMMA.STEEL PIPE(HOP)-6 AWN.0.W 38 INS SPELL E 15 C.MTGE RA APPgAAL OEPAEEEME3FE OF PUFBL.WORKS AIM 2 2/3 INCH X TO ION CONS. ALL UTERI. A NL...1.rm.UTI. I2F31 NO n:n;LI0 ;W;Y.1 wres LR OL i.raemt(1 i NF �[R S F/YTI MANHOLE TYPICiAL LDEiAL. n. F.MR R PoL U0ATYEEIEIFIEN(EETIN RUDIMENTS RUDIENTS OF AAAA*HT0 SIR.TYPE S. MINIMA, ION A SALE NOTES AND DETAL.S L PIPE OINETER OW BE 6. LOMA PIPE DIAYEIR SHALL S A OR DE DIAMETER FOR NICK TIE SLPPIR AS A JNMI CVpp{{OAIIA TO ASAP 0 32I2 NICIEIEA IS lES£AIMS BY -- 9t41 E G.L S?1 AS•0A3501L D•. NTERTIOOT ALMS BWL.E YORE N1N A S SYE CA FITS wan ODOR NO SWL. 02*TO AST,D 3212L(LIO6 POE11 Ali EIrco R0 UAL _ •N BY THE PNW CR MR1O LRSTNIITIRA •504110R•AIMS STALL TOTAL*001 UFO. ftCO - SAE OAT! In/MM AB PTTHNR SENLL S BLOW IKI10R,WLATIONL IIXDFO,M FACTORY ELDER 1HEAIKIRKi1C rOAu A3SWOWN PR.. M._ PIPE FITLIHNR SHAEL MEET TIE REQUIRE..SET FORTH III AMMO Y KN. - N@I�O� No. AR. aj Plc P:\SDSKFROA5911\ENHRN 59 PRI C, 11201.OF DNM/TMK 03/1e/1NR 11,24 Sc..DM Jason ArEK 2501120. N NE CAM -- ft ., „mot "-�!-�r. I 7 jS / I'..-...:.�.�__..r. .a-._._._.I..0 ._._- ; ..,tw p IIL NTER SOUr 0 _f C4sCA,E••lt,- 9� ni Y1'. r��" _ ''� III �!I ��,.cJL PARK- , 3 4r, PR. .:.Y` am c II' f I. cx : �E x 9 -eRm 7�, o NN Esc Yt/ i t c F - q I r,1 rfl , I I -I G n � Eo6w -'s 7� x s 5.:S7A7En,` II .4 ss IQ � ._. _ x j J •I x i 5 t I,�'I� �SVC s M1I J.1 I_ - -' - -1 •IA a <L, I 'Vu\ �Z` : sx I� J� 111 eb O .. . 4,,,,,,,,,..i-,„„., .t-•-- ' -,__,,s1-.,•-- - Ng364 � _ x�0 ��^I� A3llV/, ,LS3M _ I (Lwt' /// tv I al I " a; i.< 4,4., 1 . 7 „ ... gam. :Y a rlSrt•of H` j9 � � t .. _ 1 ... -Zo° 72ND AVE 5 11.u _ N x r- 5 �,.. - ., _ H 4 3 IM p I a l ,iiiiI t .e'r „o W aJ A '/y t3it v. ' • F C E 'Er SOVNo POWER D UCH:,CO h C,GI WAY y.l ; --- __. r.r..•.w•.•w•,...•,.r.,r rWe-,.r,:/° _>r„l - °I .. L ._n o .,rr ° a{-F m-W .�.,. . .9 a -_r g a y ...G Bua IticTON • ERNH NORRAc�q • p-e...o.o • L I N G T O N NORTHERN x -^.��' �.'i INDUSTRIAL PARK INDUGTRIAL T B I,' • D • BURLINGTON N RTNERN NORPAC JI \ /�I/ I ; :BURL!NGTON NORTHERN z '� .-�z ll 0 YY , 'I c • I', NORPAC INDUSTRIAL f' x µ I a p' J fin,. 7� y I'' �-- to • I ��;� I STRICT NO NI Div.3 I I1 -A �' 3Cr. # I•I I -- I= \• �!i� ^�/ji I I IDNGVIEW:Ave.:. Ic ,\ R 1 U�1� III • o _ �.,. w ,, 1:4f I . ^ - J CC!!ff ri o S' q.q yp j .RI u > • 'I it Y -*o s , IH m - E 1 I' b tr., x t ' ,� _ {IB U R L I �1 G T ¢ N s •� . t - _ a s I S 0, 3 BOTH _.. ..1-.10- ... .,I- . . _ e $. ° OAKEOA. AVE SW 04NEOALE AVE S.W. I -- - 1'D ° " v I^ � N 0 R T lEE R N INDUSTRIAI f I R te w_______]- ��;, _ zr II 0 , , R E I 7. x I "P'"-,7 N T O N a • T: + ' f y �� �'. to . W \ TT1iIIi S \ \ x ': N Ix 8 s F ? i II _—�—_\-Ll BURLINGTON0. t. Nj Ii8 cR _ + • I .n -; - S f 1❑ D7 Q ® 1 •1 >u � qi • I/ 'DSTRI �AL PA K ' t 9..no ;I I. I o - I J� Y ® � _ �E. Fasr ux,• o.rcw _ Pg r' LIND 4V„^� • I '�nlw •,• LIND ,. AVE.Ma V9'LFr K If-, x I _, _s x ,..0 c> X c I .I . I it, 30 Z , rcn I Ir� a - _ rF° c C . R 1 m1 \ I` z m 2 -� .iT• LJ -oJ CO ... 11 & BURL I N ' I 7 � y ,e1e , • o I2Q 'J11IIIII11 IIIII ' . \ O _ L /� z I N D U S T RI r � � •rn 114111111 lllll s ��0 0 P _,• z o -_ = _w N m 7/I- Vc 0� a ,sx , _.�v�" O E SIGN ROUTE 16] - Onlho 1 ® 4e+r�rono•�r3 3 Q ' -4 LEY.-.. 0:=_"r.IE.'•• ._ "EASTmIi.=_VA LET RD jAddi. ) � I 0 `i seq. .1\10- _-'r �w � rg`. —.-..-i ..._-- fs -q� r,. .W.>. - II rs. n , i ai pigg4' -t -- al I tia���I ors• .�:.J _I __ ; �...n==`-' -� 362304-9086-05 125371-0050-05 125371-0010-04 Barber Associates Seattle First National Bank Seattle First National Bank 7979 South 180th Street 1301 5th Avenue, Suite 3636 1301 5th Avenue, Suite 3636 Kent, WA 98032 Seattle, WA 98101 Seattle, WA 98101 125371-0060-03 362304-9002-06 362304-9071-02 City of Kent City of Renton Sternco Renton Center 220 -4th Avenue South 200 Mill Avenue South 8512 - 172nd Avene N.E. Kent, WA 98032 Renton, WA 98055 Redmond, WA 98052 362304-9032-00 362304-9033-09 362304-9100-07 Sternco Renton Center Sternco Renton Center Wacker Associates 8512 - 172nd Avene N.E. 8512 - 172nd Avene N.E. c/o The Madison Company 415 Bak Redmond, WA 98052 Redmond, WA 98052 r Boulevard, Suite 200 Tukwila, WA 98188 362304-9096-03 362304-9001-07 362304-9104-03 Cascade Federal Credit Renton Building 1 7 Jack Benaroya & Company P.O. Box 58450 c/o George McElrnv AccnriatPc 1010 - 4th Avenue, Suite 4700 Seattle, WA 98138 Seattle, WA 98154 2 sel of 1 • %y1 r. • CITJF RENTON ._ILi Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator July 30, 1998 Mr. Daniel Eialmelli Barghauser Consulting Engineers 18215 - 72r d Avenue South Kent, WA E+8032 SUBJECT: Oakesdale Campus- Phase I Project No. LUA-98-090,ECF,SM Reconsideration of Mitigation Measures Dear Mr. BE Imelli: This letter s written on behalf of the Environmental Review Committee (ERC) and is to advise you that they have completed [heir review of the request for reconsideration of the Mitigation Measures. See the enclosed Mitigation Measures d)cument. • The Environmental Review Committee has reconsidered and revised mitigation measures imposed on the project. Appeals of the reconsideration must be filed in writing on or before 5:00 PM August 17, 1998. If no appeals are filed by this date, the action will become final. Appeals must be filed in writing together with the required $75.00 application fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98055. Appeals to the Examin;r are governed by City of Renton Municipal Code Section 4-8-11 B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 235-2501. The preced ng information will assist you in planning for implementation of your project and enable you to exercise your appeal rights more fully, if you choose to do so. If you have any questions or desire clarification of the above, please call me at (425) 430-7219. For the Em iron mental Review Committee, 61)-QA, Peter Rose i Project Mar'ager cc: Zel nan Renton, LLC/Owners Enclosure DNSMLTR.DCLC 200 MillA Avenue South - Renton, Washington 98055 CIF)This paper contains 50%recycled material,20%post consumer ♦ V CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) RECONSIDERATION OF MITIGATION MEASURES JULY 28, 1998 APPLICATION NO(S): LUA-98-090,ECF,SM APPLICANT: Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DES(::RIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and ;onstruction permits for development of the individual lots will be completed under separate applkations. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Subs'.antial Development Permit. LOCO 1/4TION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek 1. Ti omporary Erosion Control shall be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of the project. Weekly reports shall be submitted on the status and condition of the erosion control plan with any recor emendations of change or revision to maintenance schedules or installation submitted by the F roject Engineer of record to the Public Works Inspector. Certification of the installation, maintenance and proper removal of the erosion control facilities shall be required prior to Temporary Certificate of Occupancy. 2. The applicant shall provide verification that the project would not impact the 100-year floodolain storage and show compensatory storage is provided for any fill placed within the 100- year floodplain. This issue shall be resolved subject to the approval of the Development Sery ces Division, prior to the issuance of building permits. 3. Th e live storage elevation of the detention pond shall be above the elevation of.the current 2- year food event in Springbrook Creek as modeled by the City. The elevation at the outfall of the props ised pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the plan: is at 14.5 feet and must be raised 1 foot. Revised plans shall require the approval of the Deve lopment Services Division, prior to the issuance of building permits. 4. Tr minimize disturbance to the banks of the creek, the applicant shall revise the location of the tail and utilities, to locate adjacent to the 50 foot shoreline setback providing a 40 foot undi:turbed buffer. The utilities shall be located under the trail. The applicant shall coordinate with and receive approval of the final trail alignment and construction details from the Development Services Division, prior to the issuance of building permits. 5. The applicant shall revise the plans to provide a landscape screen between the trail and the stom water ponds. The landscaping shall be subject to the approval of the Development Sery ces Division, prior to the issuance of building permits. 6. Fi: h habitat improvements (woody debris) as required by the Consent Decree shall be shown on the plans for the proposed project and activities that would disturb the improvements must be avoiced. 7. Th e applicant shall provide a common maintenance and operations agreement to demonstrate that all the lots have legal access to use the stormwater facility. The jointly used facilities shall be located within easements that grant benefiting properties use of the facility. The easements and documents shall require approval of the Development Services Division, prior to recording and lrrior to final approval of building permits. LuA-9?-p°1® Return Address: City Clerk's Office City of'Renton 1055 S Grady Way Renton, WA 98055-3232 �� Title: EASEMENT Property Tax Parcel Number: 362304-9002 Project File#: Oakesdale Business Park Street Intersection: SW 43rd St,West of Oakesdale Ave SW C, Grantee(s): Grantee(s): j 1. City of Renton, a Municipal Corporation 1. Zelman Renton LLC The Grantor,as named above,for or and in consideration of mutual benefits,hereby grants,bargains,sells and delivers to Cl t' the above named Grantee,the following described property: , Additional legal is on page 2 of document. ,0 LEGAL DESCRIPTION: Portion NW 1/4, S 36,T 23N,R 4E,WM in King County,Washington. v For the purpose of facilitating averaging wetland buffers as required for the development of the Oakesdale Business Park. Thil.'' 'n.., ;.1 run with the land described herein,and shall be binding upon the parties, their heirs,suc -.'HO' :4=. .4'•,:ssigns. Grantors covenant that they are the lawful owners of the above properties and"t $ have a .'! ':3 lawful right to execute this agreement. IN WITNESS c�F,sai�T,G_r. . or h=_ caused this in ent to be executed this/1TIday of MAC? 19 e. 17 `'"�L Ni Approved: C'ty of Renton `_ `i'.,A (Ds Jesse Tanner, ► ayo -a.11lltf111'�10 OA __I,� *to./..L City Cler,'� �4, Notary Steal must be within box ACKNOWLEDGMENT STATE OF WASHINGTON )SS COUNTY OF KING ) ' E I certify that I know or have satisfactory evidence that Jesse Tanner unxd FA ,, ,,��.y,�.•'A' q S - r _ signed this instrument,on oath stated that he was authorized to execute the instrument a " ,,, and acknowledged it as the Mayor of The City of Renton to be the free and voluntary act of such party/parties for the uses and purposes mentioned in the instrument. i . a Y ,A Notary Public in and for the State of Washington E Notary(Print) Attie It. Ne-r.t,nit i n S My appointment expires: W/`1/Zflv/ Dated: h'1GI,y I// /9 ei 9 2 _ 2 . 99-1 7 Page 1 of 3 CU m t Area For Buffer Averaging Legal Description A contiguous 21,370 square foot portion of the City of Renton property, as described below, exclusive of al designated wetlands and statutory wetland buffers to be used for wetland buffer mitigation: T I at portion of the Northeast quarter of the Northwest quarter of Section 36, Township 23 North, Range 4 E.Ist, W.M., King County, Washington, described as follows: BuIginning at the Northeast corner of Henry Adams Donation Claim No. 43; TI -nce East, a distance of 114 feet; TI 1-nce North, a distance of 30 feet, to the True Point of Beginning; g g; T -nce North,to an intersection with the North line of the Northwest quarter of said Section; T -nce westerly, along said North line, to an intersection with the easterly right-of-way margin of the Nei hem Pacific Railroad; Th nce southerly, along said easterly right-of-way margin, a distance of 1076.6 feet, more or less; Th nce East, a distance of 20 feet; CD X Th,nce southerly, along said easterly right-of-way margin, to a point lying West of the True Point of C Beginning; CC Th nce East, to the True Point of Beginning; 0 LEI.S street(SW 43rd St.); T E I EPT the south 200 feet thereof. Page 2 of 3 H:\DI VISION.S\UTILITIE.S\DOCS\1999\FILEONE\99-005.DOC BUFFER AVERAGING PLAN i... OAKSDALE BUSINESS PARK RENTON, WASNIN TON • PROPERTY BOX-HOARY R..I •IlR'lf``(Elul 1 I® BUFFER TO BE AVERAGED liftft%(kit ----__--- •',BIPFAR TOt 21,370 SF REMAW'i 1 • • • .157,740 SP • • • . i 1:1+';!t`t; ®® OFF-SITE BIFFER AVERAGING • • \j.{...'.{. !'- . t AREA 21.370 SF • • • itt qtr[ t ini m BUFFER TO REMAIN • f••t;fli.l1.,t. UCEO 111� 57.740 SF TLAN J: :I11HJtti�i .%`_I 221.370�`>REq iI:i{t�1 I . .' 'lii lul.fti I ; ILT ff �I'fii f!11rti11,l ,tl1i11 }t}i, . /• it l:1,E 1• ii i.j I lI' "i i -- -- i r^ 1 ,I I 73 \\ i 1 i I j C 1 (i YI ^, \ WETLAND I I I .t 1 I T O 1 ^ /I I I t J , 1 1 t t •DFFF••SiT E4\ \\ 1 I 1 , 21,370 SF`:A 4 1 • 15�' I \--7I - `/ I t 1 i!I 4 1 \ g 1 I � / ' 1 1 1 1 i _ -� �: E t_--__-j PP:PEATY��_(_, 1 - _ 1 \�_ BGtl\OATT 1 Q \, • i i • —1 L/ SW 43rd St. — '`f- — — .•. F Exhibit 'A' Page 3 of 3 tux1- q,1?-o6 Return Address: City Clerk's Office City of Renton 1055 S Gtady Way Renton, WA 98055-3232 Title: EASEMENT Property Tax Parcel Number: 362304-9111 Project File#: Oakesdale Business Park Street Intersection: SW 43rd St,West of Oakesdale Ave SW Grantor(s): Grantee(s): 1. Zelmgn Renton LLC 1. City of Renton,a Municipal Corporation The Grantor,as named above,for or and in consideration of mutual benefits,hereby grants,bargains,sells and delivers to Q the above named Grantee,the following described property: Additional legal is on pages 3&4 of document. LEGAL DESCRIPTION: Portion NW 1/4 NE 1/4,and NE 1/4 NW 1/4, S 36,T 23N,R 4E,WM in King CCounty,Washington. r1 For the purpose of constructing,reconstructing, installing,repairing,replacing,enlarging,operating and maintaining utilities and utility pipelines,including,but not limited to,storm drainage lines,together with the right of ingress and egress thereto without prior institution of any suit or proceedings of law and without incurring any legal obligation or liability therefor. Following the initial construction of its facilities,Grantee may from time to time construct such additional facilities as it may require. This easement is granted subject to the following terms and conditions: 1. The Grantee shall,upon completion of any work within the property covered by the easement,restore the surface of the easement,and any private improvements disturbed or destroyed during execution of the work,as nearly as $ practicable to the condition they were in immediately before commencement of the work or entry by the Grantee. 2. Grantor shall retain the right to use the surface of the easement as long as such use does not interfere with the easement rights granted to the Grantee. Grantor shall not,however,have the right to: oa. Erect or maintain any buildings or structures within the easement;or b. Plant trees,shrubs or vegetation having deep root patterns which may cause damage to or interfere with the utilities to be placed within the easement by the Grantee;or c. Develop,landscape,or beautify the easement area in any way which would unreasonably increase the costs to the Grantee of restoring the easement area and any private improvements therein. d. Dig,tunnel or perform other forms of construction activities on the property which would disturb the } compaction or unearth Grantee's facilities on the right-of-way,or endanger the lateral support facilities. e. Blast within fifteen(15)feet of the right-of-way. This easement shall run with the land described herein,and shall be binding upon the parties,their heirs, successors in interest and assigns. Grantors covenant that they are the lawful owners of the above properties and that they have a good and lawful right to execute this agreement. 0 r— M 99-115 Page 1 of 6 . 1 Title: EASEMENT Property Tax Parcel Number: 362304-9111 Project File#: Oakesdale Business Park Street Intersection: SW 43rd St,West of Oakesdale Ave SW Grantor(s): Grantee(s): I. Zelman Renton LLC 1. City of Renton, a Municipal Corporation p 1" IN WITNESS WHEREOF,said Grantor has caused this instrument to be executed this O day of, 3 i / 19 9 '. -4 • 2e//r1 c?/1 --.r!(A IX k‘t/ 1 lii PP'S/ .!' l 0!i;/l G[ii;! i��%P/,G'/' 1(1/ : /W p ,/,z e Rs-,a/&,1 iN• Notary Seal must be within box / /" CKNOWLEDGMENT Cf: NNAI 1 STATE OF SS r"--. ) 'AN p � COUNTY OK �) lI ��j [/o �4i1 ,l e ify that I now or e satisfactory evidence that PUS //i���1�r^-5 11, `.i.ilit*. v, igned this instrument,on oath C st d tha he/slth"was/f authorized to execute the instrument and n ackno dged it as the and 7j Q of to be the free and voluntary act of such - 5,9n U.'C i party/pes for the uses and purposes mentione in the instrument. t CJ t7 7 D f'19 °. Notary Public in and�for the State o j N z Notary(Print) %�/ / 1_ My appoin n yires: LY NN Dated: 9 -115 Page 2 of 6 . Drainage Easement Legal Description A drainage easement over the South 100 feet of the following described property: Those portions of the Northwest quarter of the Northeast quarter and the Northeast quarter of the Northwest quarter, all in Section 36, Township 23 North, Range 4 East, W.M., King County, Washington, described as follows: Beginning at a point 114 feet East and 30 feet North of the Northeast corner of Henry Adams Donation Claim No. 43 in the Northeast quarter of the Northwest quarter of said Section 36; Thence North, a distance of 644.78 feet; Thence South 84°34' East, a distance of 649.70 feet; Thence South 04°37' West, a distance of 193 feet, more or less, to the centerline of Drainage Ditch No. 1 (Springbrook Creek); Thence southwesterly along said centerline, to a point lying East of the Point of Beginning; 0 Q Thence West, to the point of beginning; CEXCEPT that portion lying easterly of the westerly right-of-way margin of Drainage Ditch No. 1 (Springbrook Creek) LESS street(SW 43rd St.). Page 3 of 6 H:\DIVISION.S\UTILITIE.S\DOCS\I999\FI LEONE\99-005.DOC e, { Ingress/Egress Easement Legal Description An ingress/egress easement over the West 45 feet of the South 225 feet of the following described property: T1 se portions of the Northwest quarter of the Northeast quarter and the Northeast quarter of the Northwest quarter, all in Section 36, Township 23 North,Range 4 East, W.M., King County, Washington, described as follows: Be_inning at a point 114 feet East and 30 feet North of the Northeast corner of Henry Adams Donation CI i im No. 43 in the Northeast quarter of the Northwest quarter of said Section 36; Th nce North, a distance of 644.78 feet; Th nce South 84°34' East, a distance of 649.70 feet; Th nce South 04°37' West, a distance of 193 feet, more or less,to the centerline of Drainage Ditch No. 1 M (S.t ingbrook Creek); C C Th.nce southwesterly along said centerline, to a point lying East of the Point of Beginning; C Thence West, to the Point of Beginning; 7) LE S street (SW 43rd St.). a Page 4 of 6 1 H:\Df VISION.S\UTILITIE.S\DOCS\I999\FILEONE\99-005.DOC a Exhibit 'A' Drainage Easement S 84° 34' E 649.70' Co oc Drainage Easement Area c - ` sterly right-of-w.y for Stringbrook Creek / - ter line of Cree Draina•a District #1 S rin broo 100' low P 9 k Creek) SW 43rd Steet True Point of Beginning 0 1"-200• 200 i ( IN FEET ) Page 5 of 6 �' . y N Exhibit 'B' Ingress/Egress Easement S 84° 34' E 649.70' 1/ s 04°37' • an i c#: C C Co in 4Ingress/Egress Easement C Area '' z `- sterly right-of-w.y for e S ringbrook Creek 2 5' 45' / Drainage District #1 Springbrook / 9 p gbrook Creek) SW 43rd Steet True Point of Beginning l a ti h X O i 2 0 1"=200' 200 ( IN FEET ) 1 x Page 6 of 6 '' STA7'p ? a F s DEVELOPMENT PLANNING CfTY OF RENTON 64 COY '""� SEP 0 9 1998 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY RECEIVED Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washington 98008-5452 • (425) 649-7000 September 8, 1998 Daniel K. Balmelli Barghausen Consulting Engineers 18215 72nd Av S Kent WA 98032 Dear Mr. Balmelli: Re: City of Renton Permit# LUA98-090SM ZELMAN RENTON LLC - Applicant Shoreline Substantial Development Permit# 1998-NW-10138 The subject Shoreline Management Substantial Development Permit, to construct a 3-cell stormwater detention and water quality facility, including stub-outs, for future separately- permitted development in Oakesdale Business Park, has been filed with this office by the City of Renton on August 21, 1998. The development authorized by the subject permit may NOT begin until the end of the 21-day appeal period, September 11, 1998. The Shorelines Hearings Board will notify you by letter if this permit is appealed. Other federal, state, and local permits may be required in addition to the subject permit. If this permit is NOT appealed, this letter constitutes the Department of Ecology's final notification of action on this permit. Sincerely, Alice Kelly, Shorelands Specialist Shorelands and Environmental Assistance Program AMK:amk SDP.DOC cc: James D. Hanson, City of Renton "�' 0 CITY<OFRENTON CURRENT PLANNING DIVISION ;: AFFIDAVIT OF SERVICE BY MAILING On the ZA day of lAnuju , 1998, I deposited in the mails of the United States, a sealed envelope containing strovre),tv'e revoA+t documents. This information was sent to: Name Representing Z. P•C Cc.L)1088 IPrtbrvmy GertevaLL Ze,1 vvv>44 " kevttFti OcuAket Sat we ll t't& eh Eh91 v,e c (Signature of Sender) S&vtive. V . Sc.=...eY' STATE OF WASHINGTON ) ) SS COUNTY OF KING ) I certify that I know or have satisfactory evidence that �t\C:,,a_ signed this instrument and acknowledged it to be his/her/their free and voluntary act forthe uses and purposes mentioned in the instrument. Dated:C61- . 3 E, )`i f g GQ�4-63 ��l.�:4.t NotaryPublic and for the State of Washi on Notary (Print) My appointment i MMISSION EXPIHtS b/ZU/UV Project Name: CUa ate. CamF s P&se = Project Number: LOA. GI8. o b, rzr, SW\ NOTARY.DOC 0` CITE JF RENTON j' Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator August 20, 1998 State Department of Ecology Noithwest Regional Office 31c,0 160th Ave. SE Bel'evue, WA 98008-5452 SUBJECT: Shoreline Management Substantial Development Permit for the Oakesdale Campus Phase I-File No. LUA-98-090, SM, ECF To Whomever it May Concern: Eni:losed is the Shoreline Substantial Development Permit for the above referenced project. The permit was issued by the City of Renton on August 19, 1998. We are filing this action with the Department of Ecology and the Attorney General per WAC 173-14-090. Please review this permit and attachments and call me at (425) 235-2719 if you have any questions or need adcitional information. Sincerely, Pei er Rosen Prc ject Manager Enclosures: Copy of Original Application Affidavit of Public Notice/Publication Site Plan SEPA Determination cc: Office of Attorney General City of Renton, Transportation Systems City of Renton, Utility Systems Applicant SHQRLTR DOC 200 Mill Avenue South - Renton, Washington 98055 C J This naner cnntains 50%recycled material 90%nnct consumer • ;; , CITX OF RENTON Planning/Building/Public Works Department J e Ta;tiler,Mayor Gregg Zimmerman P.E.,Administrator July 30, 1998 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 (ERC) on July 28, 1998: DETERMINATION OF NON-SIGNIFICANCE-MITIGATED RECONSIDERATION OF MITIGATION MEASURES OAKESDALE CAMPUS PHASE I LUA-98-090,ECF,SM Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be i:ompleted under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Sut stantial Development Permit. Location: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Spr ngbrook Creek. The Environmental Review Committee has reconsidered and revised mitigation measures imposed on the project. Appeals of the reconsideration must be filed in writing on or before 5:00 PM August 17, 1998. If no appeals are filed by this date, the action will become final. Appeals must be filed in writing together with the required $75.00 application fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98055. Appeals to the Examin r are governed by City of Renton Municipal Code Section 4-8-11 B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 235-2501. If you have questions, please call me at (425) 430-7219. For the Ens ironmental Review Committee, itiat Peter Rosen Project Manager cc: King County Wastewater Treatment Division Larry Fisher, Department of Fisheries David F. Dietzman, Department of Natural Resources Doi i Hurter, Department of Transportation Shiley Lukhang, Seattle Public Utilities Dip varnish Tribal Office Road Malcom, Fisheries, Muckleshoot Indian Tribe (Ordinance) JoE Jainga, Puget Sound Energy AGNCY-1,12.D)C\ 200 Mill Avenue South - Renton, Washington 98055 CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) RECONSIDERATION OF MITIGATION MEASURES JULY 28, 1998 APPI.ICATION NO(S): LUA-98-090,ECF,SM APPI.ICANT: Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DES:,RIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and wate. quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate appli rations. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Sub:tantial Development Permit. LOC4TION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek 1. Temporary Erosion Control shall be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of the project. Weekly reports shall be submitted on the status and condition of the erosion control plan with any recommendations of change or revision to maintenance schedules or installation submitted by the Project Engineer of record to the Public Works Inspector. Certification of the installation, maintenance and proper removal of the erosion control facilities shall be required prior to Temporary Certificate of Occupancy. 2. The applicant shall provide verification that the project would not impact the 100-year floor plain storage and show compensatory storage is provided for any fill placed within the 100- year floodplain. This issue shall be resolved subject to the approval of the Development Sere ices Division, prior to the issuance of building permits. 3. T le live storage elevation of the detention pond shall be above the elevation of the current 2- year flood event in Springbrook Creek as modeled by the City. The elevation at the outfall of the profosed pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the plans is at 14.5 feet and must be raised 1 foot. Revised plans shall require the approval of the Development Services Division, prior to the issuance of building permits. 4. To minimize disturbance to the banks of the creek, the applicant shall revise the location of the trail and utilities, to locate adjacent to the 50 foot shoreline setback providing a 40 foot undisturbed buffer. The utilities shall be located under the trail. The applicant shall coordinate with and receive approval of the final trail alignment and construction details from the Development Services Division, prior to the issuance of building permits. 5. Tie applicant shall revise the plans to provide a landscape screen between the trail and the stop nwater ponds. The landscaping shall be subject to the approval of the Development Services Division, prior to the issuance of building permits. 6. Fish habitat improvements (woody debris) as required by the Consent Decree shall be shown on tie plans for the proposed project and activities that would disturb the improvements must be avoided. 7. The applicant shall provide a common maintenance and operations agreement to demonstrate that all the lots have legal access to use the stormwater facility. The jointly used facilities shall be I bcated within easements that grant benefiting properties use of the facility. The easements and documents shall require approval of the Development Services Division, prior to recording and prior to final approval of building permits. CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) RECONSIDERATION OF MITIGATION MEASURES JULY 28, 1998 APPLICATI1:)N NO(S): LUA-98-090,ECF,SM APPLICAN" Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DESCRIPT ON OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment f,icility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. the proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline S abstantial Development Permit. LOCATION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek LEAD AGE VCY: City of Renton Department of Planning/Building/Public Works Development Planning Section The City o 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 di(ring the environmental review process. The Envirc nmental Review Committee has reconsidered and revised mitigation measures imposed on the project. Ar)peals of the reconsideration must be filed in writing on or before 5:00 PM August 17, 1998. If no appeals are filed by this date, the action will become final. Appeals must be filed in writing together with the required $75.00 application fee with: Hearing Examiner, City of Renton, 200 Mill Avenue South, Renton, WA 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 235 DATE OF PUBLICATION August 3, 1998 DATE OF DECISION: August 17, 1998 SIGNATUF ES: ---,2d-V41 ,�e / G e g Zimmerman, Ad�f ator2-1/7 1 DATE Departmen of Planning/Building/Public Works 'James Shepard,Ainistrator DATE Community Se 'ces . ..2.e,./(....,91i.,..4'?....,,.....___. -7_ ,0 ,p',P - -f L ler, Fire Chief DATE Ren on Fire Department DNSMSIG2.D DC CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) RECONSIDERATION OF MITIGATION MEASURES JULY 28, 1998 APPLICATION NO(S): LUA-98-090,ECF,SM APPLICANT: Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DE:5CRIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and wat;;r quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate app ications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Sut stantial Development Permit. LOI:ATION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek 1. 'emporary Erosion Control shall be installed and maintained to the satisfaction of the rep esentative of the Development Services Division for the duration of the project. Weekly rep,wts shall be submitted on the status and condition of the erosion control plan with any recommendations of change or revision to maintenance schedules or installation submitted by the Project Engineer of record to the Public Works Inspector. Certification of the installation, maintenance and proper removal of the erosion control facilities shall be required prior to Ter iporary Certificate of Occupancy. 2. (he applicant shall provide verification that the project would not impact the 100-year floc dplain storage and show compensatory storage is provided for any fill placed within the 100- year floodplain. This issue shall be resolved subject to the approval of the Development Ser vices Division, prior to the issuance of building permits. 3. The live storage elevation of the detention pond shall be above the elevation of the current 2- yes r flood event in Springbrook Creek as modeled by the City. The elevation at the outfall of the proposed pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the pla is is at 14.5 feet and must be raised 1 foot. Revised plans shall require the approval of the De''elopment Services Division, prior to the issuance of building permits. 4. -o minimize disturbance to the banks of the creek, the applicant shall revise the location of the trail and utilities, to locate adjacent to the 50 foot shoreline setback providing a 40 foot unc isturbed buffer. The utilities shall be located under the trail. The applicant shall coordinate with i and receive approval of the final trail alignment and construction details from the De.felopment Services Division, prior to the issuance of building permits. 5. Me applicant shall revise the plans to provide a landscape screen between the trail and the sto.mwater ponds. The landscaping shall be subject to the approval of the Development Sei vices Division, prior to the issuance of building permits. 6. Fish habitat improvements (woody debris) as required by the Consent Decree shall be shown on he plans for the proposed project and activities that would disturb the improvements must be avc ided. Oakesdale Campus, Phase I LUF-98-090,ECF,SM Mitigation Measures (Continued) Page. 2of2 7. Tle applicant shall provide a common maintenance and operations agreement to demonstrate that all the lots have legal access to use the stormwater facility. The jointly used facilities shall be I)cated within easements that grant benefiting properties use of the facility. The easements and documents shall require approval of the Development Services Division, prior to recording and prior to final approval of building permits. THE ZELMAN COMPANIES 707 WILSHIRE BOULEVARD, SUITE 3036 • LOS ANGELES, CA 90017 •TELEPHONE (213) 533-8DEy#LENsNNING CITY OF RENTON JUL 2 4 1998 July 21, 1998 RECEIVED Ms. Jana Huerter Land Use Review Supervisor City of Renton 1055 South Grady Way, 6th Floor Renton,Washington 98055 Re: Request for Reconsideration Oakesdale Business Campus,Phase I(Project No. LUA-98-090, ECF,SM) Determination of Non-Significance(Mitigated) Mitigation Measures Dear Ms. Huerter: After careful consideration of the letter I sent to you yesterday, and further review of our plans, we still feel strongly that the imposition of a mitigation measure requiring enhancements to Springbrook Creek are misplaced. Furthermore, we are so concerned with the scope and cost of this mitigation measure that we will ask for a reconsideration of our plan relocating the pedestrian trail to the north side of Springbrook Creek or possibly move the path outside of the 50 foot setback along the south side of the creek, if we cannot obtain a waiver. While both of these alternatives are somewhat undesirable to us,they are certainly less time consuming and expensive than the requested mitigation measure. It was our original intent to locate the pedestrian trial on the south side of Springbrook Creek because we felt the 50 foot setback and the configuration of the parcels allowed for more room, and a more immediate method of satisfying the mitigation measure. Had we known additional extensive, time consuming, and expensive improvements to the creek would be required as a result, we never would have proposed it. I appreciate your sincere consideration of this request for reconsideration. Zelman Renton,LLC By: Zelman Industrial Partners, Inc. By: / ' (• t Paul T. Casey, Vi,47•sident CC: Dan Balmelli Peter Rosen Sandy Kopelow Brett Foy Ben Reiling Dick Burr ZELMAN DEVELOPMENT CO. ZELMAN INDUSTRIAL PARTNERS,INC. ZELMAN RETAIL PARTNERS,INC. A CALIFORNIA CORPORATION A CALIFORNIA CORPORATION A CALIFORNIA CORPORATION `: CITY OF RENTON Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator July 23, 1998 Mr. Daniel Balmelli Barghausen Consulting Engineers 18215 72nd Avenue South Kent, WA 98032 SUBJECT: Oakesdale Campus- Phase I Project No. LUA-98-090,ECF,SM Dear Mr. Balmelli: This letter is to inform you that the comment and appeal periods have ended for the Environmental Review Committee's (ERC) Determination of Non-Significance - Mitigated for the above-referenced project. The Zelman Company has filed a Request for Reconsideration of Mitigation Measures #5 and #6 which relate to a stream buffer enhancement plan. This reconsideration is scheduled for review before the ERC on July 28, 1998. If you have any questions, please feel free to contact me at (425) 430-7219. For the Environmental Review Committee, Peter Rosen Project Manager cc: Zelman Renton, LLC/Owners FINAL.DOC 200 Mill Avenue South Renton, Washington 98055 Jul -21-98 12 :42P ZELMAN EXEC DEPT 213 '33 8134 P . 02 THE ZELMAN COMPANIES 70/WILSHIRE HOLJLLVARD, SUITF 3))3f, • LOS ANOELLS, CA s)0011 • TELFPHONF (2131 )33.8101) • •—A) July 21, 1998 Ms. Jana Huerter Land Use Review Supervisor City of Renton 1055 South Grady Way, 6th Floor Renton, Washington 98055 Re: Request for Reconsideration • Oakesdale Business Campus, Phase I (Project No. LUA-98-090, ECF,SM) Determination of Non-Significance (Mitigated) Mitigation Measures Dear Ms. Huerter: After careful consideration of the letter I sent to you yesterday, and further review of our plans, we still feel strongly that the imposition of a mitigation measure requiring enhancements to Springbrook Creek are misplaced. Furthermore, we are so concerned with the scope and cost of this mitigation measure that we will ask for a reconsideration of our plan relocating the pedestrian trail to the north side of Springbrook Creek or possibly move the path outside of the 50 foot setback along the south side of the creek, if we cannot obtain a waiver. While both of these alternatives are somewhat undesirable to us,they are certainly less time consuming and expensive than the requested mitigation measure. It was our original intent to locate the pedestrian trial on the south side of Springbrook Creek because we felt the 50 foot setback and the configuration of the parcels allowed for more room, and a more immediate method of satisfying the mitigation measure. Had we known additional extensive, time consuming, and expensive improvements to the creek would be required as a result, we never would have proposed it. I appreciate your sincere consideration of this request for reconsideration. Zelman Renton, LLC By: Zelman Industrial Partners, Inc. By: deli <• % Paul T. Casey,Vitt sident CC: Dan Balmelli Peter Rosen Sandy Kopelow Brett Foy Ben Reiling Dick Burr ZELMAN DEVELOPMENT C:O. ZtLMAN INDLib I[iPAL-'fill TNEM ,INC. ZELMAN FFL 1All I•/\I-1I NIL!ice.INc A ('AI I)II NIA (.(1111'()N.A I ION A ('.A,If(:h A (:(,.f('()NAI.(),. THE ZELMAN COMPANIES 707 WILSHIRE BOULEVARD, SUITE 3036 • LOS ANGELES, CA 90017 •TELEPHONE (213) 533-8100 • FAX (213) 533-8118 July 20, 1998 Ms. Jana Huerter Land Use Review Supervisor City of Renton 1055 South Grady Way, 6th Floor 100 Renton, Washington 98055 Re: Request for Reconsideration Oakesdale Business Campus, Phase I (Project No. LUA-98-090, ECF,SM) Determination of Non-Significance (Mitigated) Mitigation Measures Dear Ms. Huerter: We have received and reviewed the comments from the Environmental Review Committee ("ERC") of the City of Renton related to the above referenced application. Upon reviewing these comments we are concerned with and object to the imposition of a stream buffer enhancement plan (items #5 and #6 of the mitigation measures). As you know, the primary purpose of this proposal is to install a storm drain facility and sewer line extension to service these commercial lots. It seems to us inappropriate to impose such costly and time consuming creek enhancement requirements on such a small application. The application does not involve a site plan for, or the development of, any of the commercial parcels. It appears to us that these mitigation measures are being driven by the fact that we are including in this application our plans for the installation of a pedestrian path along the length of Springbrook Creek. As you know, this pedestrian path was a mitigation measure imposed as a result of our development of the property north of Springbrook Creek. It appears to us mitigation measures are being imposed related to our satisfaction of other mitigation measures. Furthermore, we believe it would be more appropriate to have these types of extensive landscaping and enhancement requirements imposed at the time of the development of these parcels. As you know, we are under contract to sell several of these parcels to users who have already begun, or soon will be, their application process to the City of Renton for the development of these lots. These groups will be in a much better position to incorporate these mitigation measures into their projects, and to see that they are successful. The ZELMAN DEVELOPMENT CO. ZELMAN INDUSTRIAL PARTNERS,INC. ZELMAN RETAIL PARTNERS, INC. A CALIFORNIA CORPORATION A CALIFORNIA CORPORATION A CALIFORNIA CORPORATION Ms. Jana Huerter July 20, 1998 Page 2 current mitigation measures will require us to instigate monitoring and contingency plans on property we will be selling in several months. In short, we ask that the ERC reconsider the imposition of these mitigation measures. We feel they would more appropriately be applied to the actual development of the property, and not in relation to the satisfaction of other mitigation measures, or in relation to the installment of a rather modest utility project servicing undeveloped commercial property. I appreciate your sincere consideration of this request for reconsideration. Zelman Renton, LLC By: Zelman Industrial Partners, Inc. By: Paul T. Casey, V. e President CC: Dan Balmelli Peter Rosen Brett Foy Ben Reiling Sandy Kopelow OF RENTON • -C URRENT AFFIDAVIT OF SERVICE BY MAILING On the. k day of "3Tuk.# , 1998, I deposited in the mails of the United States, a sealed envelope containing ERC. a•i evwAwudle•t1S documents. This information was sent to: Name Representing Departm:Int of Ecology Don Hurler WSDOT KC Wastewater Treatment Division Larry Fisher Washington Department of Fisheries David F. Dietzman Department of Natural Resources Shirley L ukhang Seattle Public Utilities Duwamis h Indian Tribe Rod Mall:om Muckleshoot Indian Tribe Joe Jain to Puget Sound Energy (Signature of Sender) St te•-•Scrc1e^ STATE OF WASHINGTON ) SS COUNT'OF KING I certify that I know or have satisfactory evidence that Cam,-1‘14,6 , signed this instrument and acknowledged it to be his/her/their free and voluntary act for-the uses and purposes mentioned in the instrument. Dated: C / /1/� Notary Public, and for a State of W ington Notary (Print) MARILYN KAMC F!Err My appointment ap res: GIUMMI5.510N EXPIRES 6/29/99 Project Name: Ilia► OaICesdale Opus- Nblase-r Project Number: lUA • `18 r�5►M NOTARY.DO(: = CIT 1. OF RENTON •=11. .1 Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator July 01, i 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 (ERC) on June 30, 1998: DETERMINATION OF NON-SIGNIFICANCE-MITIGATED OAKESDALE CAMPUS PHASE I LU/ -98-090,ECF,SM Pro )osal to construct a three-cell stormwater detention and water quality treatment facility to serve future dev lopment. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Suk stantial Development Permit. Location: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Spr ngbrook Creek. Comments regarding the environmental determination must be filed in writing on or before 5:00 PM July 20, 1998. Any aggrieved person feeling that the environmental determination of the Environmental Review Committee is based on el roneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence that could not be reasonably available at the time of the determination may submit written comments. After review of the comments, if the Environmental Review Committee finds there is not sufficient evidence to amend its original determination, then there will be no further extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed with: Jana Huerter, Land Use Review Supervisor, City of Renton Development Services Division, 1055 South Grady Way, Renton, WA 98055. Appeals o1 the environmental determination [RCW 43.21.0075(3), WAC 197-11-680] must be filed in writing on or before 5:011 PM July 20, 1998. If no appeals are filed by this date, the action will become final. Appeals must be filed in writing together with the required $75.00 application fee with: Hearing Examiner, City of Renton, 200 Mill Avenue South, Renton, W, 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional i iformation regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 235 If you have questions, please call me at (425) 430-7219. For the En) ironmental Review Committee, Peter Rosen Project Ma lager cc: Kir g County Wastewater Treatment Division Lary Fisher, Department of Fisheries Da rid F. Dietzman, Department of Natural Resources Doi Hurter, Department of Transportation Sh rley Lukhang, Seattle Public Utilities Duvvamish Tribal Office Rcd Malcom, Fisheries, Muckleshoot Indian Tribe (Ordinance) Jo 3 Jainga, Puget Sound Energy AGNCYLTR.DOC1 200 Mill Avenue South - Renton, Washington 98055 rlrl Tl.ic nano.r...Jalnc cnsn mr,nIarl mnturinl 9n°%nnct cnnci imPr CIT`_ OF RENTON loll -�' Planning/Building/Public Works Department Jesse Tai ner,Mayor Gregg Zimmerman P.E.,Administrator July 01, 1993 Mr. Daniel E almelli Barghausen Consulting Engineers 18215 - 72n 1 Avenue South Kent, WA 8032 SUBJECT: Oakesdale Campus- Phase I Project No. LUA-98-090,ECF,SM Dear Mr. Be Imelli: This letter is written on behalf of the Environmental Review Committee (ERC) and is to advise you that they have completed 1 heir review of the subject project. The ERC, on June 30, 1998, issued a threshold Determination of Non- Significancc-Mitigated with Mitigation Measures. See the enclosed Mitigation Measures document. Comments regarding the environmental determination must be filed in writing on or before 5:00 PM July 20, 1998. Any aggrieved person feeling that the environmental determination of the Environmental Review Committee is based on erroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence that could not be reasonably available at the time of the determination may submit written comments. After review of the comments, if the Environmental Review Committee finds there is not sufficient evidence to amend its original determination, then there will be no further extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed with: Jana Huerter, Land Use Review Supervisor, City of Renton Development Services Division, 1055 South Grady Way, Renton, WA 98055. Appeals o1 the environmental determination [RCW 43.21.0075(3), WAC 197-11-680] must be filed in writing on or before 5:00 PM July 20, 1998. If no appeals are filed by this date, the action will become final. Appeals must be filed in writing together with the required $75.00 application fee with: Hearing Examiner, City of Renton, 200 Mill Avenue South, Renton, Wa 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional i iformation regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 235 The preceding information will assist you in planning for implementation of your project and enable you to exercise your appeal righ s more fully, if you choose to do so. If you have any questions or desire clarification of the above, please call me at (425; 430-7219. For the Em ironmental Review Committee, Peter Rosen Project Ma lager cc: Zeman Ronton, LLC/Owners Enclosure DNSMLTR.DOC 200 Mill Avenue South - Renton, Washington 98055 This nanny rnntaina RO%recycled material.20%noel consumer CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) MITIGATION MEASURES APPLICATION NO(S): LUA-98-090,ECF,SM APPLICANT: Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DESCRIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. LOCATION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek 1. Temporary Erosion Control shall be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of the project. Weekly reports shall be submitted on the status and condition of the erosion control plan with any recommendations of change or revision to maintenance schedules or installation submitted by the Project Engineer of record to the Public Works Inspector. Certification of the installation, maintenance and proper removal of the erosion control facilities shall be required prior to Temporary Certificate of Occupancy. 2. The applicant shall provide verification that the project would not impact the 100-year floodplain storage and show compensatory storage is provided for any fill placed within the 100- year floodplain. This issue shall be resolved subject to the approval of the Development Services Division, prior to the issuance of building permits. 3. The live storage elevation of the detention pond shall be above the elevation of the current 2- year flood event in Springbrook Creek as modeled by the City. The elevation at the outfall of the proposed pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the plans is at 14.5 feet and must be raised 1 foot. Revised plans shall require the approval of the Development Services Division, prior to the issuance of building permits. 4. The alignment of the proposed trail shall minimize impacts to the bank of the creek. The applicant shall coordinate with and receive approval for the final trail alignment and construction details from the Development Services Division, prior to the issuance of building permits. 5. The applicant shall prepare a stream buffer enhancement plan for their entire property frontage along Springbrook Creek, enhancing the 25 foot buffer width between the trail and the creek with native plantings to improve the riparian habitat. The enhancement plan and planting scheme should be coordinated with the development planned on the north side of the creek. The stream buffer enhancement plan shall meet all the same standards as required for wetland mitigation plans, to ensure the success of the plantings. The enhancement plan shall include a monitoring program, contingency plan, posting of performance and maintenance surety devices, and other requirements per Section 4-32-6H. of the code. The enhancement plan shall be subject to the approval of the Development Services Division, prior to the issuance of building permits. . Oakusdale Campus, Phase I LUA•98-090,ECF,SM Mitigation Measures (Continued) Page 2 of 2 6. Fish habitat improvements (woody debris) as required by the Consent Decree shall be shown on the plans for the proposed project and activities that would disturb the improvements must be avoided. 7. The applicant shall revise the plans to provide a landscape screen between the trail and the stormwater ponds. The landscaping shall be subject to the approval of the Development Ser,ices Division, prior to the issuance of building permits. 8. The applicant shall provide a common maintenance and operations agreement to demonstrate that all the lots have legal access to use the stormwater facility. The jointly used facilities shall be located within easements that grant benefiting properties use of the facility. The easements and documents shall require approval of the Development Services Division, prior to recording and arior to final approval of building permits. CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ADVISORY NOTES APPLICATION NO(S): LUA-98-090,ECF,SM APPLICANT: Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DESCRIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. LOCATION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek 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. PLAN REVIEW Water 1. Water utility review will be provided when shown on plans with sufficient information. 2. Construction plans are to meet City of Renton drafting standards and specifications. Wastewater 1. Side sewers will need to be shown on construction plans. More review comments may be forth coming when more detailed information is available. 2. Show dimension of sewer line from channel. 3. Show how manholes are accessed for maintenance. Need 15'wide gravel access 6" in depth. Also the 3 cell pond will block access to the existing manhole. Storm water 1. The applicant is responsible for obtaining approvals of other agencies with jurisdiction for the proposed work along the creek (State Fish & Wildlife, Dept. Of Ecology, Drainage District No.1, Corps of Engineers, etc.). 2. It is our understanding the applicant is working with Drainage District No. 1 to realign the District property to better follow the creek. The plans need to show the final location of the District property. 3. The plans show the proposed storm drainage pond being constructed over an existing City sewer line. The Sewer Utility Division requires maintenance access to the existing line and manholes.. The sewer System may need to be relocated. 4. There is to be more than 5-feet of horizontal clearance between the proposed storm and sanitary sewer lines as the plan currently shows. Minimum separation to be 7.5-feet. Show dimension on plan. 5. The project applicant must prepare a final Storm Drainage Report in accordance with the 1990 King County Surface Water Design Manual as adopted by the City. An offsite analysis is not necessary, but the report can instead reference the City of Renton East Side Green River Watershed Project Plan and EIS for information on the creek. Oakesdale Campus Phase I LUA-98-090,ECF,SM Advisory Notes (Continued) Page 2 of 2 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, application and appropriate fee shall be submitted to he fourth floor counter. PARKS Parka recommends that all stormwater and sanitary sewer manholes be relocated outside the trail pavement area. • CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) APPLICATION NO(S): LUA-98-090,ECF,SM APPLICANT : Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DESCRIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. she proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline SIrbstantial Development Permit. LOCATION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek 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 di.ring the environmental review process. Comments regarding the environmental determination must be filed in writing on or before 5:00 PM July 20, 1998. Any aggrieved person feeling that the environmental determination of the Environmental Review Committee is based on erroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence that could not be reasonably available at the time of the determination may submit written comments. After review of the comments, if the Environmental Review Committee finds there is not sufficient evidence to amend its original determination, then there will be no further extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed with: Jana Huerter, Land Use Review Supervisor, City of Renton Development Services Division, 1055 South Grady Way, Renton, WA 98055. Appeals of the environmental determination [RCW 43.21.0075(3), WAC 197-11-680] must be filed in writing on or before 5:00 PM July 20, 1998. If no appeals are filed by this date, the action will become final. Appeals must be filed in writing togel her with the required $75.00 application fee with: Hearing Examiner, City of Renton, 200 Mill Avenue South, Renton, WA 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional it formation regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 235 PUBLICATION DATE: July 6, 1998 DATE OF C ECISION: June 30, 1998 SIGNATURES: rniaLtkw/4I g/30/n Gregg i frm , Administrator DATE Depa ni of Planni /Building/Public Works A) ._;-, 119,-) 74w 9 / . Sam Chastain, Administrator DATE Commu ity Services 1 / i 17f ," Lee Wheeler, Fire Chief DA Renton Fire Department DNSMSIG.DOO CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) MITIGATION MEASURES APPLICATION NO(S): LUA-98-090,ECF,SM APPLICANT: Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DESCRIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and wat r quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. LOCATION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek 1. Temporary Erosion Control shall be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of the project. Weekly reports shall be submitted on the status and condition of the erosion control plan with any recommendations of change or revision to maintenance schedules or installation submitted by the Project Engineer of record to the Public Works Inspector. Certification of the installation, ma ntenance and proper removal of the erosion control facilities shall be required prior to Ter iporary Certificate of Occupancy. 2. The applicant shall provide verification that the project would not impact the 100-year floc dplain storage and show compensatory storage is provided for any fill placed within the 100- yeE r floodplain. This issue shall be resolved subject to the approval of the Development Services Division, prior to the issuance of building permits. 3. The live storage elevation of the detention pond shall be above the elevation of the current 2- year flood event in Springbrook Creek as modeled by the City. The elevation at the outfall of the proposed pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the plans is at 14.5 feet and must be raised 1 foot. Revised plans shall require the approval of the Development Services Division, prior to the issuance of building permits. 4. The alignment of the proposed trail shall minimize impacts to the bank of the creek. The applicant shall coordinate with and receive approval for the final trail alignment and construction del ails from the Development Services Division, prior to the issuance of building permits. 5. The applicant shall prepare a stream buffer enhancement plan for their entire property fro Itage along Springbrook Creek, enhancing the 25 foot buffer width between the trail and the creek with native plantings to improve the riparian habitat. The enhancement plan and planting sct eme should be coordinated with the development planned on the north side of the creek. Th 3 stream buffer enhancement plan shall meet all the same standards as required for wetland mil igation plans, to ensure the success of the plantings. The enhancement plan shall include a me nitoring program, contingency plan, posting of performance and maintenance surety devices, and other requirements per Section 4-32-6H. of the code. The enhancement plan shall be subject to the approval of the Development Services Division, prior to the issuance of building pe mits. Oakisdale Campus, Phase I LUA.98-090,ECF,SM Mitication Measures (Continued) Page 2 of 2 6. Fish habitat improvements (woody debris) as required by the Consent Decree shall be shown on the plans for the proposed project and activities that would disturb the improvements must be avoided. 7. The applicant shall revise the plans to provide a landscape screen between the trail and the stor-nwater ponds. The landscaping shall be subject to the approval of the Development Services Division, prior to the issuance of building permits. 8. The applicant shall provide a common maintenance and operations agreement to demonstrate that all the lots have legal access to use the stormwater facility. The jointly used facilities shall be located within easements that grant benefiting properties use of the facility. The easements and documents shall require approval of the Development Services Division, prior to recording and prior to final approval of building permits. CITY OF RENTON DETERMINATION OF NON-SIGNIFICANCE (MITIGATED) ADVISORY NOTES APPLICATION NO(S): LUA-98-090,ECF,SM AP''LICANT: Barghausen Consulting Engineers PROJECT NAME: Oakesdale Campus Phase I DESCRIPTION OF PROPOSAL: Proposal to construct a three-cell stormwater detention and waler quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. LOCATION OF PROPOSAL: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek Aa visory 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. PLAN REVIEW W;rter 1. Nater utility review will be provided when shown on plans with sufficient information. 2. construction plans are to meet City of Renton drafting standards and specifications. WW+stewater 1. Side sewers will need to be shown on construction plans. More review comments may be forth co ning when more detailed information is available. 2. Show dimension of sewer line from channel. 3. Show how manholes are accessed for maintenance. Need 15'wide gravel access 6" in depth. Also the 3 cell pond will block access to the existing manhole. St mmwater 1. The applicant is responsible for obtaining approvals of other agencies with jurisdiction for the proposed we rk along the creek (State Fish &Wildlife, Dept. Of Ecology, Drainage District No.1, Corps of Er gineers, etc.). 2. It is our understanding the applicant is working with Drainage District No. 1 to realign the District property to better follow the creek. The plans need to show the final location of the District property. 3. The plans show the proposed storm drainage pond being constructed over an existing City sewer line. TF e Sewer Utility Division requires maintenance access to the existing line and manholes.. The sewer S)stem may need to be relocated. 4. There is to be more than 5-feet of horizontal clearance between the proposed storm and sanitary sewer lines as the plan currently shows. Minimum separation to be 7.5-feet. Show dimension on plan. 5. The project applicant must prepare a final Storm Drainage Report in accordance with the 1990 King County Surface Water Design Manual as adopted by the City. An offsite analysis is not necessary, but th 3 report can instead reference the City of Renton East Side Green River Watershed Project Plan and EIS for information on the creek. Oakesdale Campus Phase 1 LUA-98-090,ECF,SM Advi:,ory Notes (Continued) Page 2 of 2 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, application and appropriate fee shall be submitted to the fourth floor counter. PAR.(S Park; recommends that all stormwater and sanitary sewer manholes be relocated outside the trail pavement area. AFFIDAVIT OF PUBLICATION NOTICE OF ENVIRONMENTAL DETERMINATION ENVIRONMENTAL REVIEW C .'..M' .TT E Kristina J. Thompson, being first duly sworn on oath states that he/she is the Legal Clerk of RENTON,WASHINGTON. the The Environmental Review Committee (ERC)has issued a Determination of Non- Significance - Mitigated for the following Muunic pall Codehe authority of the Renton SOUTH COUNTY JOURNAL OAKESDALE CAMPUS PHASE I 600 S. Washington Avenue, Kent, Washington 98032 LUA-98-090,ECF,SM Proposal to construct a stormwater detention and water quality treatment facili- a daily newspaper published seven (7)times a week. Said newspaper is a legal ty. Proposed improvements are within 200 newspaper of general publication and is now and has been for more than six months feet of Springbrook Creek and require a prior to the date ofpublication, referred to, printed andpublished in the English language shoreline NW cornerr developmentrr . 9 � Location: NW of SW 43rd Street continually as a daily newspaper in Kent, King County, Washington. The South County and Oakesdale Avenue SW, South of Journal has been approved as a legal newspaper by order of the Superior Court of the Springbrook Creek. State of Washington for King County- for this p oject will cnt oncuprrrentlyeriod The The notice in the exact form attached, was published in the South County comment/appeal periods for this project will Journal (and not in supplemental form)which was regularly distributed to the subscribers end mat n5ts shallP on July 2w rded. to Writtenh comments be forwarded to the during the below stated period. The annexed notice, a Development Services Division Land Use Review Supervisor. Information on the pro- measures Oakesdale Campus- Phase I imposed ect leabdy ton the he mClitty tl of Renton's Environmental Review Committee are as published on: 7/6/98 available at the Development Services Division, Sixth Floor, Renton City Hall, 1055 So. Grady Way, Renton, WA 98055. The full amount of the fee charged for said foregoing publication is the sum of$54.09 Phone: (425) 430-7200. Appeal pro- ceduresLegal Number 4861 office, FirsteF oor,l able MunicipalineBuildi gCity Ie rk i200 Mill Ave.So., Renton,WA 98055. Publication Date: July 6,1998 Fry(T /) J Py bbli 1998 in theSouth County Journal 6, 61 Legal Clerk, South(TO) Journal Subscribed and sworn before me on this / I day o , 19 9 \ E, i >.--- . 0 0 sS10NF:• t•/ ,� ` its;-. cH �i =off` 9 Notary Public f the State of Washington c' No7aRy F`�'• = residing in Renton —.— = King County, Washington 9i9 PUB INC" O:Z* 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. OAKESDALE CAMPUS PHASE I LUA-98-090,ECF,SM Proposal to construct a stormwater detention and water quality treatment facility. Proposed improvements are within 200 feet of Springbrook Creek and require a shoreline substantial development permit. Location: NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek. The 15 day comment and appeal period for this project will run concurrently. The comment/appeal perk ds for this project will end at 5:00 PM on July 20, 1998. Written comments shall be forwarded to the [Development Services Division Land Use Review Supervisor. Information on the project file and the mitic ation measures imposed by the City of Renton's Environmental Review Committee are available at the Development Services Division, Sixth Floor, Renton City Hall, 1055 So. Grady Way, Renton, WA 980!5. Phone: (425) 430-7200. Appeal procedures are available in the City Clerk's office, First Floor, Mun cipal Building, 200 Mill Ave. So., Renton, WA 98055. Pub ication Date: July 6, 1998 Accc unt No. 51067 dnsm)ub.dot i\Illi ra-ICE 0 ENVIRONMENTAL DETERMINATION POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION PROJECT NAME: OAKESDALE CAMPUS PHASE I . PROJECT NUMBER: LUA-98-090,ECF,SM Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development.The project would Include stub-outs to future lots for storm drainage conveyance,sanitary sewer. and possible watennain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail Is included In the proposal. The proposed improvements are located within 200 feel of Springbrook Creek and therefore require a Shoreline • Substantial Development Permit.Location:NW corner of SW 43rd Street and Oakesdale Avenue SW.South of Springbrook Creek. THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERC) HAS DETERMINED THAT THE PROPOSED ACTION DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. Comments regarding the environmental determination must be filed in writing on or before 5:00 PM July 20, 1998.Any aggrieved person feeling that the environmental determination of the Environmental Review Committee is based on erroneous procedure,errors of law or fact,error in judgment,or the discovery of new evidence that could not be reasonably available at the time of the determination may submit written comments.After review of the comments,if the Environmental Review Committee finds there is not sufficient evidence to amend its original determination,then there will be no further extension of the appeal period.Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe.Written comments must be filed with:Jana Hoarier,Land Use Review Supervisor,City of Renton Development Services Division,1055 South Grady Way,Renton,WA 98055. Appeals of the environmental determination[RCW 43.21.0075(3).WAC 197-11-680]must be filed in writing on or • before 5:00 PM July 20.1998.If no appeals are filed by this date,the action will become final.Appeals must be filed in writing together with the required$75.00 application lee with:Hearing Examiner,City of Renton,200 Mill Avenue South, Renton,WA 98055.Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office,(425)235 F r JCia�J . j N.Gal , fi I[[ L , I 1 IFI 1Y , i I " 7 .� � sw tl� } :i� �W4 bT_._i r°1 . i. � �I FOR FURTHER INFORMATION,PLEASE CONTACT THE CITY OF RENTON,DEVELOPMENT SERVICES DIVISION AT(425)430-7219. DO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION Please include the project NUMBER when calling for iproper file Identification. CERTIFICATION I, fl,I'rl" /111.by , hereby certify that copies of the above document were posted by me in I conspicuous places on or nearby the described property on J,,,_Y .Z, (pie • Signed: �� ATTEST: Subcribed and sworn before me, a Nortary Public,in and for the State of Washington residing vin,tA , on the (p b day of9tx-6.-- /5 f �'1a , MARILYN KAMCHEFF COMMISSION EXPIRES 6/29/99 CITY OF RENTON SHORELINE MANAGEMENT ACT OF 1971 PERMIT FOR SHORELINE MANAGEMENT SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT APPLICATION NO.: LUA98-090, SM, ECF DATE RECEIVED: May 28, 1998 DATE OF PUBLIC NOTICE: June 1, 1998 DATE APPROVED: August 18, 1998 DATE DENIED: NA TYI'E OF ACTION(S): [X] Substantial Development Permit [ ] Conditional Use Permit [ ] Variance Permit Put suant to Chapter 90.58 RCW, the City of Renton has granted a permit: This action was taken on the following application: APPLICANT: Dan Balmelli, Barghausen Consulting Engineers Zelman Renton L.L.C. PROJECT: Oakesdale Campus Phase I DEVELOPMENT DESCRIPTION: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. LEGAL DESCRIPTION: Attached separately to report. SEC-TWNP-R: Section 36, Township 23 North, Range 4 East. WITHIN SHORELINES OF: Springbrook Creek APPLICABLE MASTER PROGRAM: City of Renton SH RLPERM.DOC City f Renton P/H/PW Department Shoreline Substantial Development Permit Page 2 of 2 The following section/page of the Master Program is applicable to the development: Section Description Page 5.04 Urban Environment page 22. 7.07 Commercial Development page 31. 7.17 Trails page 39. 7.18 Utilities page 42. Thi: 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 twenty-one (21) days after approval by the City of Renton Development Services Division or until any review proceedings initiated within this twenty-one (21) day review period have been completed. • q / / Planning/Building/Public Works Administrator Date SHR.PERM.DOC STAF= City of Renton REPC RT Department of Planning/Building/Public Works ENVIRONMENTAL REVIEW COMMITTEE A. BACKGROUND ERC MEETING DATE June 30, 1998 Project l,lame Oakesdale Campus Phase I Applicar t Barghausen Consulting Engineers File Nun ber LUA-098-090, ECF, SM Project ll tanager Peter Rosen Project L►escription Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. Project Location NW corner of SW 43rd Street and Oakesdale Avenue SW, South of Springbrook Creek. Exist. BA lg. Area gsf NA Proposed New Bldg. Area gsf NA Site Arei, 11.2 acres Total Building Area gsf NA RECOM v1ENDATION Staff recommends that the Environmental Review Committee issue a Determination of Non-Significance, Mitigated. C.-11'6' `,.'d •-, , •: ",,i7-1-7:- i-• EF] • ff id- BSI' �•; .;c- (zL . - ) ,v., L' ..-L�.. -. 1\1,1--1. ''ite. .IT.;"4:' * ''''' '' ** •- .._:::rd ..R...e:',...`1..../ _•/ II it --. -- il-1;% -:- i it 1 Project Location Map p ]'j . ti;} _ -_. ERCRPT.DOC 5u it F}: l•i•' •I i li t'1- / , _.i 7-..-_.Ai : / • City, of Rer ton P/B/PW Department Environm( Review Committee Staff Report OAKESDA LE CAMPUS PHASE I LUA-98-090, ECF, SM • REPORT Oa"JUNE 30, 1998 Page 2 of 7 B. RECOMMENDATION B.ised on analysis of probable impacts from the proposal, staff recommend that the Responsible Officials m 3ke 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 As seal 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. M'TIGATION MEASURES 1. Temporary Erosion Control shall be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of the project. Weekly reports shall be submitted on the status and condition of the erosion control plan with any recommendations of change or revision to maintenarce schedules or installation submitted by the Project Engineer of record to the Public Works Inspector. Certification of the installation, maintenance and proper removal of the erosion control facilities shall be re auired prior to Temporary Certificate of Occupancy. 2. The applicant shall provide verification that the project would not impact the 100-year floodplain storage and show compensatory storage is provided for any fill placed within the 100-year floodplain. This issue shall be resolved subject to the approval of the Development Services Division, prior to the issuance of building permits. 3. The live storage elevation of the detention pond shall be above the elevation of the current 2-year flood event in S)ringbrook Creek as modeled by the City. The elevation at the outfall of the proposed pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the plans is at 14.5 feet and must be riised 1 foot. Revised plans shall require the approval of the Development Services Division, prior to the issuance of building permits. 4. The alig pment of the proposed trail shall minimize impacts to the bank of the creek. The applicant shall coordinate with and receive approval for the final trail alignment and construction details from the Development Services Division, prior to the issuance of building permits. 5. The applicant shall prepare a stream buffer enhancement plan for their entire property frontage along Springbrook Creek, enhancing the 25 foot buffer width between the trail and the creek with native plantings to improve the riparian habitat. The enhancement plan and planting scheme should be coordinated with the development planned on the north side of the creek. The stream buffer enhancement plan shall meet all the same standards as required for wetland mitigation plans, to ensure the success of the plantings. The enhancement plan shall include a monitoring program, contingency plan, posting of performance and maintenance surety devices, and other requirements per Section 4-32- 6H. of the code. The enhancement plan shall be subject to the approval of the Development Services Division, p lor to the issuance of building permits. 6. Fish ha)itat improvements (woody debris) as required by the Consent Decree shall be shown on the plans for the proposed project and activities that would disturb the improvements must be avoided. 7. The applicant shall revise the plans to provide a landscape screen between the trail and the stormwater ponds. The landscaping shall be subject to the approval of the Development Services Division, prior to the issuance of building permits. 8. The applicant shall provide a common maintenance and operations agreement to demonstrate that all the lots have legal access to use the stormwater facility. The jointly used facilities shall be located within easements that grant benefiting properties use of the facility. The easements and documents shall require approval of the Development Services Division, prior to recording and prior to final approval of building permits. ERCRPT.DO City of Rer ton P/B/PW Department Environmi Review Committee Staff Report OAKESDA LE CAMPUS PHASE I LUA-98-090, ECF, SM • REPORT Ol=JUNE 30, 1998 Page 3 of 7 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. PLAN RE JIEW Water 1. Water L tility review will be provided when shown on plans with sufficient information. 2. ConstrLction plans are to meet City of Renton drafting standards and specifications. Wastewai er 1. Side severs will need to be shown on construction plans. More review comments may be forth coming when more deta led information is available. 2. Show d mension of sewer line from channel. 3. Show h)w manholes are accessed for maintenance. Need 15'wide gravel access 6" in depth. Also the 3 cell pond will t lock access to the existing manhole. Stormwal er 1. The apr licant is responsible for obtaining approvals of other agencies with jurisdiction for the proposed work along the 1:reek (State Fish & Wildlife, Dept. Of Ecology, Drainage District No.1, Corps of Engineers, etc.). 2. It is our understanding the applicant is working with Drainage District No. 1 to realign the District property to better folic w the creek. The plans need to show the final location of the District property. 3. The plans show the proposed storm drainage pond being constructed over an existing City sewer line. The Sewer Utility Division requires maintenance access to the existing line and manholes.. The sewer System may need to be relocated. 4. There ie to be more than 5-feet of horizontal clearance between the proposed storm and sanitary sewer lines as the plan currently shows. Minimum separation to be 7.5-feet. Show dimension on plan. 5. The protect applicant must prepare a final Storm Drainage Report in accordance with the 1990 King County Surface Water Design Manual as adopted by the City. An offsite analysis is not necessary, but the report can instead reference the City of Renton East Side Green River Watershed Project Plan and EIS for information on the creek. 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, application and appropriate fee shall be submitted to the fourth floor counter. PARKS Parks recc mmends that all stormwater and sanitary sewer manholes be relocated outside the trail pavement area. ERCRPT.DOC City of Rer ton P/B/PW Department Environm Review Committee Staff Report OAKESDA LE CAMPUS PHASE I LUA-98-090, ECF, SM REPORT OF JUNE 30, 1998 Page 4 of 7 D. EVVIRONMENTAL IMPACTS In compliance with RCW 43.21 C. 240, the following project environmental review addresses only tf ose project impacts that are not adequately addressed under existing development standards ai►d environmental regulations. His the applicant adequately identified and addressed environmental impacts anticipated to occur in conjunction with the proposed development? BackgroL nd The subject site is presently under the ownership of the Zelman Development Company which is developing the utility infrastructure to serve the 11 acre site prior to selling lots for commercial development. The City Council approved a rezone of the site to Commercial Arterial (CA) in June 1998. Zelman Development Company also owns 31.5 acres of industrial property north of Springbrook Creek and has site plan approval to develop approximately 550,000 square feet of warehouse/distribution buildings. The Zelman Development Company received approval to clear and grade the entire site (both sides of tf e creek) as part of a consent decree approved by the Department of Ecology for remediating contaminEnts on the site. As a condition of the Shoreline Permit for the industrial development on the north side of Springbrook Creek, the applicant was required to construct a trail along the south side of Springbrook Creek. The condition allowed Zelman to construct the trail on the south side of the creek (even though the industrial development was proposed on the north side of the creek) because the Shoreline Master Program requires a 50 foot setback from the creek for commercial development (which applies only to the south side of Sp-ingbrook Creek), as opposed to a 25 foot setback for industrial development on the north side of the creE k. The objective of the condition was that a trail located within the wider 50 foot setback would be able to minimize disturbance and grading cuts into the creek banks. The subject proposal includes construction plans for the trail on the south side of the creek. The trail is located just outside of 25 feet from the h gh water mark of Springbrook Creek. The stormwater ponds are proposed in the northeast corner of the site, near the frontage of Oakesdale Avenue SW. The stormwater facilities go into the 50 foot shoreline setback area. In the Shoreline Master Program, the 50 foot setback requirement applies to commercial buildings and there are not policies limiting stormwater facilities from the shoreline setback. The stormwater ponds are proposed directly adjacent to the trail. The applicant has proposed a chainlink fence separating the trail from the 2:1 slope down to the stormwater ponds. 1. Ei.rth Impacts: the environmental checklist states that approximately 8,000 cubic yards of excavation and fill work would be required to construct the stormwater detention and water quality treatment pond and for excavation of the utility trenches for the drainage and utility improvements. Except for bedding material, no imported material is anticipated for completion of the project. Erosion could occur during the construction of the stormwater facility and trail. The stormwater ponds would be outside of the stream banks on a flat grade and therefore erosion would be minimal if conducted as anticipated during the summer dry months. The trail would be cut into the stream banks. Potential erosion impacts would be mitigated by City Codes which require the applicant to provide a Construction Mitigation Plan and require a Temporary Erosion and Sedimentation Control Plan (TESCP) prior to issuance of Construction Permits. Because of the presence of environmentally sensitive areas on the site, staff recommends a condition to ensure that Temporary Erosion Control measures are maintained throughou' the duration of construction on the site. Weekly reports should be submitted on the status and condition of the erosion control plan with any recommendations of change or revision to maintenance schedules or installation submitted by the Project Engineer of record to the Public Works Inspector. Certificaticn of the installation, maintenance and proper removal of the erosion control facilities should be required prior to Temporary Certificate of Occupancy. Mitigation Measures: Temporary Erosion Control shall be installed and maintained to the satisfaction of the representative of the Development Services Division for the duration of the project. Weekly reports shall be submitted on the status and condition of the erosion control plan with any recommendations of ERCRPT.DCC City of Renton P/B/PW Department Environmm Review Committee Staff Report OAKESDALE CAMPUS PHASE I LUA-98-090, ECF, SM REPORT Oi JUNE 30, 1998 Page 5 of 7 change or revision to maintenance schedules or installation submitted by the Project Engineer of record to the Public Works Inspector. Certification of the installation, maintenance and proper removal of the erosion control facilities shall be required prior to Temporary Certificate of Occupancy. Policy News: Environmental Ordinance. 2. A'r Impacts Emissions from construction equipment and dust from the excavation and utility work can be anticipate i during construction phase of the proposed project. Impacts during construction would include increased levels of airborne particulates (especially dust)from disturbance of exposed soils. Construction impacts In ould be short term in nature and would be mitigated through best management practices of the required -ESOP and with the Construction Mitigation Plan. Emissions from construction equipment exhaust would have a minor impact on local air quality. Exhaust from construction vehicles is regulated by State z nd City Codes. There would not be air impacts associated with operation of the project. Mitigation Measures No further mitigation is recommended. Policy Ne ws NA 3. Water Impacts: Springbrook Creek flows across the north property boundary of the project site. No filling or dredging .vould occur within the surface water of the creek. A new storm outlet would be constructed with the proposed project and would require HPA permit approval from the State Department of Fisheries. FEMA maps indicate a small portion of the southeast corner of the site is located within the 100-year floodplain The environmental checklist claims that from an actual field topographic survey site elevations at this location are above the 100-year flood elevation of Springbrook Creek. The applicant will need to verify that the project would not impact the 100-year floodplain storage and show compensatory storage is provided i or any fill placed within the 100-year floodplain. The live storage elevation of the detention pond must be above the elevation of the current 2-year flood event in ; pringbrook Creek as modeled by the City. The elevation at the outfall of the proposed pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the plans is at 14.5 feet and needs to be raised 1 foot. The proposed trail would be constructed just outside the 25-foot buffer from the high water mark of the creek. The sections submitted with the application show the trail would be cut into the bank of Springbrcok Creek disturbing existing vegetation and the creek bank. The applicant should demonstrate that the F roposed trail alignment minimizes impacts to the banks of the creek versus aligning the trail further frc m the creek, still within the 50 foot required setback. The applicant should enhance the stream buffer with plantings of native species to mitigate for impacts of the trail construction. This mitigation is further supported by the City of Renton East Side Green River Watershed Project Plan and EIS issued September 1997 which identifies a need for improvements to the riparian habitat of the reach of Springbrcok Creek along the project site. The EIS states that habitat improvements should be imposed on develc pment through the SEPA process. The applicant should prepare a stream buffer enhancement plan for their entire frontage along the creek, enhancing the 25 foot wide buffer between the trail and the creek. The enhancement plan and planting scheme should be coordinated with the development planned on the north side of the creek. The stream buffer enhancement plan should meet all the same standards as required for the wetland mitigation plans to ensure the success of the plantings. The enhancement plan should include a monitoring program, contingency plan, posting of performance and maintenance surety devices, and other requirements per Section 4-32-6H of the code. Under tha Consent Decree for cleanup of the site, fish habitat improvements (woody debris) will be installed after contaminated sediments are removed from the creek. These improvements should be shown on the plans for the proposed project and activities that would disturb the improvements must be avoided. ERCRPT.D"DC City of Renton P/B/PW Department Environm Review Committee Staff Report OAKESW LE CAMPUS PHASE I LUA-98-090, ECF, SM REPORT O, JUNE 30, 1998 Page 6 of 7 Mitigation Measures: 1. The applicant shall provide verification that the project would not impact the 100-year floodplain storage and show compensatory storage is provided for any fill placed within the 100-year floodplain. This issue shall be rpsolved subject to the approval of the Development Services Division, prior to the issuance of building permits. 2. The live storage elevation of the detention pond shall be above the elevation of the current 2-year flood event in E pringbrook Creek as modeled by the City. The elevation at the outfall of the proposed pond is 15.5 feet NAVD 1988 datum). The pond live storage elevation shown on the plans is at 14.5 feet and must be raised 1- foot. Revised plans shall require the approval of the Development Services Division, prior to thy; issuance of building permits. 3. The alicmment of the proposed trail shall minimize impacts to the bank of the creek. The applicant shall coordinatE with and receive approval for the final trail alignment and construction details from the Development Services Division, prior to the issuance of building permits. 4. The ap)licant shall prepare a stream buffer enhancement plan for their entire property frontage along SpringbroPk Creek, enhancing the 25 foot buffer width between the trail and the creek with native plantings to improve the riparian habitat. The enhancement plan and planting scheme should be coordinated with the development planned on the north side of the creek. The stream buffer enhancement plan shall meet all the same standards as required for wetland mitigation plans, to ensure the success of the plantings. The enhancement plan shall include a monitoring program, contingency plan, postng of performance and maintenance surety devices, and other requirements per Section 4-32- 6H of the code. The enhancement plan shall be subject to the approval of the Development Services Division, prior to the issuance of building permits. 5. Fish habitat improvements (woody debris) as required by the Consent Decree shall be shown on the plans for tl re proposed project and activities that would disturb the improvements must be avoided. Nexus: Environmental Ordinance. 4. Transportation Impacts: The proposed project to construct a stormwater facility and trail would not result in the generatior of new traffic trips and therefore no traffic mitigation fee is warranted for the proposal. The proposed trail would provide a connection to the existing Springbrook Creek trail system, benefiting pedestrian and bicycle circulation through the valley area. Mitigation 'Measures: NA Nexus: Ni 5. Public Services/Utilities Impacts: The proposal is not expected to alter or increase the demand for public services or public utilities serving the site. Potential impacts to public services and utilities will be evaluated when a specific developmE nt project is proposed on the site. The storm drainage facility is proposed to serve commercial development on several lots. There must be a common maintenance and operations agreement between all the lots/properties proposing to use the joint facilities. Jointly used facilities must also be located within easements that grant benefiting properties the right to use the facility. The City will need to approve the easements and documents prior to recording. Mitigation Measures: The applicant shall provide a common maintenance and operations agreement to demonstrate that all the lots have legal access to use the stormwater facility. The jointly used facilities shall be to sated within easements that grant benefiting properties use of the facility. The easements and documents shall require approval of the Development Services Division, prior to recording and prior to final approval of building permits. Nexus: Environmental Ordinance. ERCRPT.DOC • City of Renton P/B/PW Department Environm Review Committee Staff Report OAKESDALE CAMPUS PHASE 1 LUA-98-090, ECF, SM • REPORT OF JUNE 30, 1998 Page 7 of 7 6. Land Use and Shoreline Use Impacts: The proposal is within 200 feet of Springbrook Creek. Springbrook Creek is a shoreline of the City and regulated under the Shorelines Master Program. The proposal will require a Shoreline Substantial Development Permit. Springbrook Creek is designated as an "urban" environment on the subject prnperty. The Shoreline Master Program requires a 50 foot setback for commercial buildings, as measured from the ordinary high water mark of the creek. This setback requirement does not apply to stormwatE r facilities. The Shoreline Master Program includes policies requiring the screening of utilities with lanth caping. The proposed stormwater ponds are located directly adjacent to the trail, and the 2:1 embankment of the stormwater ponds drops 10 vertical feet. The applicant has proposed a 6 foot high chainlink ence between the trail and the stormwater ponds. The applicant should provide for adequate landscapE screening between the trail and the chainlink fence to meet policies for screening of utilities. Mitigation Measures: The applicant shall revise the plans to provide a landscape screen between the trail and the stormwater ponds. The landscaping shall be subject to the approval of the Development Services Division, prior to the issuance of building permits. Nexus: Shoreline Master Program. E. COMMENTS OF REVIEWING DEPARTMENTS The proposal has been circulated to City Departmental/Divisional Reviewers for their review. Where applicable, these comments have been incorporated into the text of this report as Mitigation Measures and/or Notes to Applicant. Copies of all Review Comments are contained in the Official File. Copies of all Review Comments are attached to this report. Environmental Determination Comment Process Comments regarding the environmental determination must be filed in writing on or before 5:00 PM July 20, 1998. Any aggrieved person feeling that the envircnmental determination of the Environmental Review Committee is based on erroneous procedure, errors of law or tact, error in judgment, or the discovery of new evidence that could not be reasonably available at the time of the determination may submit written comments. After review of the comments, if the Environmental Review Committee finds there is not sufficient evidence to amend its original determination, then there will be no further extension of the appeal period. Any person wishing to take further action would need to file a formal appeal within the original 15-day timeframe. Written comments must be filed with: Jana Huerter, Land Use Review Supervisor, City of Renton Development Services Division, 200 Mill Avenue South, Renton, WA 98055. Enviror mental Determination Appeal Process Appeals of the environmental determination [RCW 43 21.0075(3), WAC 197-11-680] must be filed in writing on or before 5:00 PM July 20, 1998. If no appeals are filed by this date, the action will become final. Appeals must be filed in writing together with the required 675.00 application fee with: Hearing Examiner, City of Renton, 200 Mill Avenue South, Renton, WA 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425)235-2501. ERCRPT.DJC Cit Renton Department of Planning/Building/ c Works E. NVIF ONMENTAL DEVELOPMENT APPLICP, TION REVIEW SHEET REVIEWING DEPARTMENT: EC. crlmn c, 7T''' DeUejo� OMMENTS DUE: JUNE 15, 1998 APPLICATION! NO: LUA-98-090,ECF,SM DATE CIRCULATED: JUNE 01, 1998 APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen PROJECT TI TLE: Oakesdale Campus- Phase I WORK ORDER NO: 78394 LOCATION: 1000 Block of SW 43rd Street SITE AREA: 11.2 acres I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. 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/Shorellne Use Utilities Animals Transportation Environmental health Public Services Energy/ Historic/Cultural Natural Resour es Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLIC'-RELATED COMMENTS l�u ( L%c 1 55UL3 C. CODE ?ELATED 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. Signs ure of or or Autho ed Re resentative Date DEVAPP.DOC Rev.10/93 t • City enton Department of Planning/Building/F Works ENVIRONMENTAL & DEVELOPMENT APPLIC,1 r ION REVIEW SHEET REVIEWING DEPARTMENT: acc{%iP15ki.)tZy— COMMENTS DUE: JUNE 15, 1998 APPLICATION NO: LUA-98-090,ECF,SM DATE CIRCULATED: JUNE 01, 1998 O17). APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen • R �'On aiti PROJECT TI—LE: Oakesdale Campus-Phase I WORK ORDER NO: 78394 ' 2 LOCATION: 1000 Block of SW 43rd Street " 189 oe SITE AREA: 11.2 acres ( BUILDING AREA(gross): N/A yr v/oi SUMMARY OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain ex ension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Spring Nook Creek and therefore require a Shoreline Substantial Development Permit. A. ENV/RCNMENTAL 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 LighVGlare Plants Recreation Land/Shoreline Ise Utilities Animals Transportation Environmental It'ealth Public Services Energy/ Historic/Cultural Natural Resoun es Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICI=RELATED COMMENTS .S ' C e-L,"t-5 'Po Y r e V/ -5 ?ELATED COMMENTS We have revie ved 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. Signature of Director or Authorized Representativ D DEVAPP.DOC Rev.10/93 OAKESDALE BUSINESS CAMPUS SW 43RD Street & Oakesdale Ave. Sw. PHASE I EIS Review JUNE 9, 1998 SEWER: 1. Side sewers will need to be shown on construction plans. More review comments may be forth coming when more detailed information is available. 2. Page 6: Show dimension of sewer line from channel. 3. Page 6: Show how manholes are accessed for maintenance. Need 15' wide gravel access 6" in depth. Also the 3 cell pond will block access to the existing manhole. 4. Page 7: Same as page 6. Need to know how to access manhole. 6. Page 8: Same as page 6. Need to know how to access manhole. 7. The Sewer System Development Connection charge is $30 psi,A-tfor 11.2 acres. 98cm097S 98CM097S.DOC\ OAKESDALE BUSINESS CAMPUS SW 43RD Street & Oakesdale Ave. Sw. PHASE I EIS Review JUNE 10, 1998 SURFACE WATER ISSUES: 4a. 1.. The Storm System Connection Charge is for 8.41 acres or (366,341.07 sq. Ft.) of impervious surface area which amounts to $47,258.00. (J� 2. Floor elevation of proposed buildings must be a minimum of 1-ft. above the Fema 100-year flood elevation. NF 3 Provide a wetland report for the site to determine if the project will have wetland impacts. Show any wetlands on the plans and identify where mitigation will be accomplished. Na 4. The applicant is responsible for obtaining approvals of other agencies with jurisdiction for the proposed work along the creek (State Fish & Wildlife, Dept. Of Ecology, Drainage District No.1, Corps of Engineers, etc.). 5. The storm drainage report needs to show the amount of 100-year floodplain storage filled by the project is less than the amount of compensatory storage created. Compensatory storage is required for any fill placed in the 100-year flood plain. 6. It is our understanding that fish habitat improvements (woody debris) will be installed along �� the creek after contaminated sediments are removed from the creek as part of the cleanup work authorized under Ecology's consent decree. These improvements are to be shown on the plans and activities that would disturb the improvements must be avoided. Ac), 7. It is our understanding the applicant is working with Drainage District No. 1 to realign the Nee District property to better follow the creek. The plans need to show the final location of the District property. 8. The plans show the proposed storm drainage pond being constructed over an existing City iP sewer line. The Sewer Utility Division requires maintenance access to the existing line and manholes.. The sewer System may need to be relocated. FPS There is currently a red-tailed hawk's nest on the property near Oakesdale Avenue. The applicant must coordinate with Washington State Department of Fish and Wildlife regarding requirements pertaining to the red-tailed hawk nesting sites. 10. The City of Renton East Side Green River Water Shed Project Plan and EIS issued September // 1997 identifies a need for improvements to the riparian habitat of the reach of Springbrook Creek along the project site. These habitat improvements are to be made a condition of this project as part of the SEPA process to compensate for the loss of riparian habitat due to the proposed development and because we understand a trail will be constructed within the buffer, further reducing the habitat. The applicant is to acknowledge. responsibility for ensuring that all plantings along the creek are successful for a minimum period of 5-years. The planting scheme needs to be coordinated with what will be installed under the Oakesdale Business Park Phase II & III projects on the North side of the creek. The applicant must meet Document2\ all conditions of the Renton Code (section 4-32-6H attached) for monitoring program, contingency plan, posting of performance and maintenance surety devices, and other requirements to ensure the success of the plantings. 11. The detention pond live storage elevation must be above the elevation of the current 2-year /j'A flood event in Springbrook Creek as modeled by the City. The elevation at the outfall of the proposed pond is 15.5 feet (NAVD 1988 datum). The pond live storage elevation shown on the plans is at 14.5 feet and needs to be raised 1-foot. 12. There is to be more than 5-feet of horizontal clearance between the proposed storm and sanitary sewer lines as the plan currently shows. Minimum separation to be 7.5-feet. Show d dimension on plan. IV13. Since the storm drainage pond is proposed to serve several lots there must be a maintenance � and operations agreement between all properties proposing to use the joint facilities similar to S E what was done for our Lind Corporate Park Project. Jointly used facilities must also be WA"^ located with easements that grant benefiting properties the right to use the facility. Submit documents for approval. 14. The project applicant must prepare a final Storm Drainage Report in accordance with the A 1990 King County Surface Water Design Manual as adopted by the City. An offsite analysis is not necessary, but the report can instead reference the City of Renton East Side Green River Watershed Project Plan and EIS for information on the creek. 98cm097D Document2\ City nton Department of Planning/Building/Pt Works ENVIRONMENTAL & DEVELOPMENT APPLIC . I ION REVIEW SHEET REVIEWING DEPARTMENT: valet 1eViGW_u)'atur COMMENTS DUE: JUNE 15, 1998 APPLICATION NO: LUA-98-090,ECF,SM DATE CIRCULATED: JUNE 01, 1998 'TY APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen R OF RiNTo, PROJECT Tll LE: Oakesdale Campus-Phase I WORK ORDER NO: 78394 At1N 0? 1998 LOCATION: 000 Block of SW 43rd Street SITE AREA: 11.2 acres BUILDING AREA(gross): N/A vILLi1��- vl,;y," SUMMARY OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future develor ment. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Spring:rook Creek and therefore require a Shoreline Substantial Development Permit. A. ENV/RC NMENTAL 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 LightGlare Plants Recreation • Land/Shoreline Ise Utilities Animals Transportation Environmental Iealth Public Services • Energy/ Historic/Cultural Natural Resoun es Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLIC"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 addition 11 information is needed to properly assess this proposal. Signature of D rector or Authorized Representative Date DEVAPP.DOC Rev.10/93 OAKESDALE BUSINESS CAMPUS SW 43RD Street & Oakesdale Ave. Sw. PHASE I EIS Review JUNE 9, 1998 WATER: 1. Water utility review will be provided when shown on plans with sufficient information.. 2. One(1) fire hydrant is required for each 1000 gpm of required fire flow. The primary hydrants must be within 150-feet of the building, but not closer than 50-feet and the secondary hydrants to be within 300-feet of the building. 3. 400p water system is required if the required fire flow is over 2500 gpm. 4. Constructdion plans to comply with City of Renton standards and specifications. - 5. The Water System Development Connection charge is $ 5511 Z 1, for a 11.2 acre site. Li 98cm097W 98CM097W.DOC\ City 'enton Department of Planning/Building/f Works ENVIRONMENTAL h DEVELOPMENT APPLICA ,'ION REV,f I*1 1DEET CMTInN Pimp, REVIEWING 'DEPARTMENT: �� ,�t F''}to,,,E'kt "e COMMENTS DUE: JUNE 15, 1998 U 2 1998 APPLICATIOIJ NO: LUA-98-090,ECF,SM DATE CIRCULATED: JUNE 01, 1998 APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen 'E VEII PROJECT TI -LE: Oakesdale Campus- Phase I WORK ORDER NO: 78394 LOCATION: 1000 Block of SW 43rd Street SITE AREA: 11.2 acres 1 BUILDING AREA(gross): N/A SUMMARY CF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain ex ension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Spring3rook Creek and therefore require a Shoreline Substantial Development Permit. A. ENVIRC NMENTAL 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 Ise Utilities Animals Transportation Environmental I ealth Public Services Energy/ HistoriclCultural Natural Resoun es Preservation Airport Environment 10,000 Feet 14,000 Feet a 5r a�vK c./++ 5 Ac fed P B. POLICY-RELATED COMMENTS C. CODE-i?ELATED 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 additiona information is ne to properly assess this proposal. C1^42.9-6 /.2/9 Signature of irector or Authorized epre n awe Date DEVAPP. Rev.10/93 City en ton Department of Planning/Building/P Works ENVIRONMENTAL 8 DEVELOPMENT APPLICA i ION REVIEW SHEET REVIEWING DEPARTMENT:—i> a o. t l-LM COMMENTS DUE: JUNE 15, 19,, APPLICATION NO: LUA-98-090,ECF,SM DATE CIRCULATED: JUNE 01, 1998 APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen PROJECT TI-'LE: Oakesdale Campus- Phase I WORK ORDER NO: 78394 LOCATION: 1000 Block of SW 43rd Street A/O.(M, 41, SITE AREA: 11.2 acres 1 BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain ek ension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Spring gook Creek and therefore require a Shoreline Substantial Development Permit. A. ENVIRC NMENTAL 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 i.lse Utilities Animals Transportation Environmental health Public Services Energy/ Historic/Cultural Natural Resources Preservation Airport Environment 10,000 Feet 14,000 Feet i I-v1 . B. POLICY'RELATED COMMENTS C. CODE-F.ELATED COMMENTS We have revieR ed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additions,information is needed to property assess this proposal. Signature of Director or Authorized Representative' Date DEVAPP.DOC Rev.10/93 OAKESDALE BUSINESS CAMPUS SW 43RD Street & Oakesdale Ave. Sw. PHASE I EIS Review JUNE 9, 1998 TRANSPORTATION: 1. The transportation mitigation fee is $75 per new trip generated. 2. Construction Drawings to comply with the City Of Renton drafting standards and specifications. 3. A fair share cost of a new traffic signal at the intersection of Oakesdale Ave. SW & SW 41st St. Will be triggered when the site is developed. A project is underway now by the City to make Oakesdale Ave. SW a through arterial which will bring the intersect up to a Traffic Signal warrant. 4. A future railroad separation crossing project detour route may impact the most westerly tip of the site on SW 43rd St. 98cm097T 98CM097T.DOC\ City enton Department of Planning/Building/F Works ENVIPONMENTAL & vEVELOPMENT APPLIC 'ION REVIEW SHEET REVIEWING DEPARTMENT:Cyws1►vwauW‘ taut COMMENTS DUE: JUNE 15, 1998 APPLICATICN NO: LUA-98-090,ECF,SM DATE CIRCULATED: JUNE 01, 1998`•ITYC�R�t , �.. APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen PROJECT TITLE: Oakesdale Campus-Phase I WORK ORDER NO: 78394 ](i( WO LOCATION: 1000 Block of SW 43rd Street SITE AREA: 11.2 acres BUILDING AREA(gross): N/A UlLLi�'"`'' gas vsoiC}ry SUMMARY C,F PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future develo 3ment. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain a>tension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Spring brook Creek and therefore require a Shoreline Substantial Development Permit. 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 Jse Utilities Animals Transportation Environmental I health Public Services Energy/ Historic/Cultural Natural Resoun es Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLICI=RELATED COMMENTS C. CODE-RELATED COMMENTS y , L ✓ -)o C o t,vt I vc c v4 G We have reviev ed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additiona information is needed to property assess this proposal. 4 6 7/0/7 8 Signature of Dir:ctor or Authorized Representative Date DEVAPP.DOC Rev.10/93 Citi en ton Department of Planning/Building/ :Works ENVIRONMENTAL a DEVELOPMENT APPLICA I-/ ON REVIEW SHEET REVIEWING DEPARTMENT: f:`. yc',t COMMENTS DUE: JUNE 15, 1998 APPLICATIC N NO: LUA-98-090,ECF,SM DATE CIRCULATED: JUNE 01, 1998 APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen PROJECT T TLE: Oakesdale Campus- Phase I WORK ORDER NO: 78394 LOCATION: 1000 Block of SW 43rd Street SITE AREA: 11.2 acres I BUILDING AREA(gross): N/A SUMMARY OF PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future develcpment. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substantial Development Permit. A. )NMENTAL IMPACT(e.g. Non-Code) COMMENTS Element of thi 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 Resou/ces Preservation Airport Environment 10,000 Feet 14,000 Feet B. POLIC(-RELATED COMMENTS -ry�wa7.v�t efPa�E?��jp� showc/.f d "."--/XC (`7"/-2 ,2%/221.40.71 5/Afiettil Ot/ZeCfr 1,"22-if / ( 7ram/ �-u.%t7/ nrr /� q/�t ys-/o �o . 3-/ 1 l �1zc tea`" ac y3 r%vz4 . / h C.Vr-leDE-RELATED COMMENTS r 6/ 5/ . pcia°igl-e4/77� C CL� _ 1-2,Yi-,aj t, mac-( 91?-4/2-y y i h 0 We have reviewed his application w' rticular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is e d to pro erly assess this proposal. Signature of Director or Authorized Representative Dat DEVAPP.DOC Rev.10/93 City en ton Department of Planning/Building/F Works ENVIF ONMENTAL & ELOPMENT APPLIC. i ION REVIEW SHEET REVIEWING DEPARTMENT: 1 z " COMMENTS DUE: JUNE 15, 1998 APPLICATIOV NO: LUA-9 b,ECF,SM DATE CIRCULATED: JUNE 01, 1998 APPLICANT: Barghausen Engineers PROJECT MANAGER: Peter Rosen PROJECT TI rLE: Oakesdale Campus-Phase I WORK ORDER NO: 78394 LOCATION: 1000 Block of SW 43rd Street SITE AREA: 11.2 acres I BUILDING AREA(gross): N/A SUMMARY C F PROPOSAL: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future develo lment. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots will be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The proposed improvements are located within 200 feet of Spring orook Creek and therefore require a Shoreline Substantial Development Permit. 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,Jse Utilities Animals Transportation Environmental I realth Public Services l--- Energy/ Historic/Cultural Natural Resoun es Preservation Airport Environment 10,000 Feet 14,000 Feet `Thtru,n A }66 t'e a+ 1 VJOuZ?, B. POLICI'-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 dditional information is needed to prop y assess this proposal. Signat e of Director or Authorized Representative Date DEVAPP.DOC Rev.10/93 CITY OF RENTON DEVELOPMENT SERVICES DIVISION LIST OF SURROUNDING PROPERTY OWNERS within 300 feet of the subject site PROJECT NAME: Oakesdale Business Campus APPLICATION NO: ILA •°I6. O9O 1 SVvi The i ollowing 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 Barber Associates 7979 South 180th Street 362304-9086-05 Kent, WA 98032 Seattle First National Bank 1301 5th Avenue, Suite 3636 125371-0050-05 Seattle, WA 98101 Seattle First National Bank 1301 5th Avenue, Suite 3636 125371-0010-04 Seattle, WA 98101 City of Kent 220 - 4th Avenue South 125371-0060-03 Kent, WA 98032 City of Renton 200 Mill Avenue South 362304-9002-06 Renton, WA 98055 Sternco Renton Center 8512 - 172nd Avene N.E. 362304-9071-02 Redmond, WA 98052 Ste'nco Renton Center 8512 - 172nd Avene N.E. 362304-9032-00 Redmond, WA 98052 Sternco Renton Center 8512 - 172nd Avene N.E. 362304-9033-09 Redmond, WA 98052 Walker Associates 41 5 Baker Boulevard, Suite 200 362304-9100-07 c/o The Madison Company Tukwila, WA 98188 Cascade Federal Credit P.O. Box 58450 362304-9096-03 Seattle, WA 98138 Renton Building 1-7 P.O. Box 565048 362304-9001-07 c/o George McElroy Associates Dallas, TX 75350 Jack Benaroya & Company 1010 - 4th Avenue, Suite 4700 362304-9104-03 Seattle, WA 98154 5911.009[BD/jss] (Continued) NAME ADDRESS ASSESSOR'S PARCEL NUMBER Applicant Certification . I, t)ER.- , hereby certify that the above list(s) of adjacent property (Print Name) owners and their addresses were obtained from: sseititto ❑ City of Renton Technical Services Recorci\E.HUA #,,�� ❑ Title Company Records Q-;••aow•'•••.,1. ,, King County Assessors Records . O `y ie•NOTAR • Y ✓l 5_h_� •• _*_��t1� Signed • c P Date PUBU•' I (Ap licant) PP€j i 1T ':'� -1,0 19�?�••• C?�•�� NOTARY OF W , ATTESTED: Subscribed and sworn before me, a Nota Public, in and for the State of Washington, residing a �, ' � �Q- e�y on the /gay of , 19 6 Signed n.e `A/2- (Notary Public) .•:a::....o.:x...:. ::..For.:C►tw:.of.;Renton..tJse:.:...:........ ......... . ... ......... ...... :•x+'.C: :v+x. }'iprnv:•.}:;};;;i:>�<i$:�}^:2%:i <';5:::`:d`;J:=:`�:<�:'isd.`+�:tY�<:?i`iS::ii::i:�iiiiii>R::;�iii<}`.: ..rd. Yf•. �.:M}::.. ..r..... - r..:...v}:::v••..r...:.. .::.:..... L}:?}}}}i':• .. ,.k�'dt. ,....,.,. x-..::::n........,.vv.w:::::.:.v:::::::::i;•}::::.v:::!:i•}}}}:L}}:v}}}S}:i}:•}}};}}}:'}%:k:::}ii:L:::i2:�i:'}iki� iiii:?�ii: ..Y;.}),..,,:.:ckc.-. %., ,..fi:J. +}%•.-v:":J�•}::...:. J....n.R:+::::\..:.v.,,n�:w:.}.-.v:::+?r..... .:�::•:::.:. I�::' =.. . ::�er.�ti.•� ceRifY.tf}ai nat�ces:o�;<th�;proposed aPPI�caUnn•v�rec�e:;ma�ted to < :;; each fisted;:property owner on >'> CI ................ .....::.:.:..... NOTARY ;:;:::::::>::::>:::>::;:<:::<: :> ATT( ST° Subbscribed and sworn before me, a Notary public, in and for the State of Washington restdin apt on the � ' day of - . 1'9_ s8.h4. :: •.-:i':'::�!:?::+:;:t;:l::ylkik;i:;•�:'::j ��::y�':?:Li::i~::�:�:j::T':�v:::>�::i:�i::??t:'i'}ti�:y:}{:�i+i+:�yi:�iiLi'�'�i:::r.::;::;:t;i:�:�i:L;iv:}Y:iii}}+:': listprop.docMARILYN KAMCHEFF REV 07/95 195 COMMISSION EXPIRES 6/29/99 2 • • • o O� . •©+ ��NPO� • NOTICE OF APPLICATION - PLANNING/BUILDING/PUBLIC WORKS DATE: JUNE 01,1998 A Master Application has been filed and accepted with the Development Services Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. PROJECT NUMBER/NAME: LUA-98.090,ECF,SM/OAKESDALE CAMPUS-PHASE I DESCRIPTION: Proposal to construct a three-cell stormwater detention and water quality treatment facility to serve future development. The project would include stub-outs to future lots for storm drainage conveyance,sanitary sewer,and possible waternain extension. Building and construction permits for development of the individual lots will be completed under separate applications.A 10 foot wide asphalt pedestrian trail Is included In the proposal. The proposed improvements are located within 200 feet of Spdngbrook Creek and therefore require a Shoreline Substantial Development Permit. GENERAL LOCATION: 1000 Block of SW 43rd Street/NW comer of SW 43rd Street and Oakesdale Avenue SW. • STUDIES REQUIRED/OR AVAILABLE: Technical Information Report-Drainage Report;Geotechnlcal Report PUBLIC APPROVALS: Environmental Review(ECF) Shoreline Substantial Development Permit(SM) Building Permit Comments on the above application must be submitted in writing to Mr.Peter Rosen,Project Manager,Development Services Division,200 Mill Avenue South,Renton,WA 98055,by 5:00 PM on July 13.1998. If you have questions about this proposal,or wish to be made a party of record and receive additional notification by mall,contact Mr.Rosen at (425)235-2719. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. - IPLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION I DATE OF APPLICATION: May 28.1998 NOTICE OF COMPLETE APPLICATION: June 01,1998 DATE OF NOTICE OF APPLICATION: June 01.1998 • *�_ vt �1r I t- I � I • �.- ry 41 err^� ��rnn�. II r� �7" � Ii X" 1', hl 'p w/� I.A - �i I� II ' .,.,..._.,ii• ,' rf.,,d rw \ Iii - 1 GENIVAL CERTIFICATION I, 9x c YVA1/4h Vt I- , hereby certify that 3 copies of the above documentvere posted by me in 3 conspicuous places on or nearby the described property on )the 5. Icicle • Signed: S �i A TTEST: Subcribed an. vom before me, a Nortary Public, the State of Washington residing in i. on the 5 day of / T 4k `'----77-1( i/72rN.4< .,.,„ / i MARILYN KAMCHEFF COMMISSION EXPIRES 6/29/99 0+5:-/\T-Yr-ro° NOTICE OF APPLICATION PLANNING/BUILDING/PUBLIC WORKS DATE: JUNE 01, 1998 A Master Application has been filed and accepted with the Development Services Division of the City of Renton. The following briefly de:scribes the application and the necessary Public Approvals. PROJECT NUMBE R/NAME: LUA-98-090,ECF,SM / OAKESDALE CAMPUS-PHASE I DESCRIPTION: Proposal to construct a three-cell stormwater detention and water quality treatment facility tc serve future development. The project would include stub-outs to future lots for storm drainage conveyance, sanitary sewer, and possible watermain extension. Building and construction permits for development of the individual lots w II be completed under separate applications. A 10 foot wide asphalt pedestrian trail is included in the proposal. The prc posed improvements are located within 200 feet of Springbrook Creek and therefore require a Shoreline Substanttil Development Permit. GENERAL LOCATION: 1000 Block of SW 43rd Street/NW corner of SW 43rd Street and Oakesdale Avenue SW. STUDIES REQUIRI:D/O AVAILABLE: Technical Information Report-Drainage Report; Geotechnical Report PUBLIC APPROVALS: Environmental Review(ECF) Shoreline Substantial Development Permit(SM) Building Permit Comments on the bove application must be submitted in writing to Mr. Peter Rosen, Project Manager, Development Services Division, 200 Mill Avenue South, Renton, WA 98055, by 5:00 PM on July 13, 1998. If you have questions about this proposal, )r wish to be made a party of record and receive additional notification by mail, contact Mr. Rosen at (425)235-2719. Ar:yone who submits written comments will automatically become a party of record and will be notified of any decision on this project. IPLEASE INCLUDE:THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION I DATE OF APPLICA rIOIr: May 28, 1998 NOTICE OF COMPI.ETE APPLICATION: June 01, 1998 DATE OF NOTICE OF APPLICATION: June 01, 1998 • j 1 i • . z• , • . . . 7-1 .: 0 • z • ..'. : r.1••1: ..: j...:..-i,117 •'.! /. :....--t-4,-11-21- -- t . 4tc 44,FIF.:177.4.-Fn. , .i . '( I.--; .. ,,,,,/ ... :. , ' .___,.., • , - ,�-: r rri i _ y.. ai_ • _,,r r-n7�� 1- __.., Y,^U• I IJ r I R I --. % 41 ST)_ -,-- c, i { . ...+''� C s r CIT OF RENTON .mil. •,`), Planning/Building/Public Works Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator June 1, 1998 • Mr. Daniel Balmelli Barghausen Consulting Engineers 18215-72nd Avenue South Kent, WA 98032 SUBJECT: Oakesdale Campus- Phase Project No. LUA-98-090,ECF,SM Dear Mr. Balmelli: The Development Planning Section of the City of Renton has determined that the subject application is complete according to submittal requirements and, therefore, is accepted for review. It is tentatively scheduled for consideration by the Environmental Review Committee on June 23, 1998. Prior to that review, you will be notified if any additional information is required to continue processing your application. Please contact me, at (425) 235-2719, if you have any questions. Sincerely, Peter Rosen Project Manager • cc: Zelman Ronton, LLC/Owners ACCPTLTR.DOC 200 Mill Avenue South - Renton, Washington 98055 1( � CITY OF RENTON DEVELOPMENT SERVICES DIVISION MASTER APPLICATION OWNER(S) PROJECT INFORMATION (cont.) Note: If there is more than one legal owner,please attach an additional notarized Master Application for each owner. EXISTING LAND USE(S): NAME: Zelman Renton, LLC Vacant PROPOSED LAND USES: ADDRESS: 707 Wilshire Blvd. , Suite 3036 Industrial Park CITY: Los Angeles ZIP: 90017 EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: Employment Area Valley (EAV) TELEPHONE NUMBER: (213) 533-8100 PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION: CONTACT PERSON/APPLICANT N/A NAME: Daniel K. Balmelli Barghausen Consulting Engineers EXISTING ZONING: IM ADDRESS: 18215 72nd Avenue South PROPOSED ZONING: CA CITY: Kent ZIP: 98032 SITE AREA (SQ. FT. OR ACREAGE)tv z. TELEPHONE NUMBER: (425) 251-6222 11.2 Acres C• / FF/1/Tp MqY REN oNi`viNc PROJECT'INFORMATION PROJECT VALUE: �8 '9 $3,000,000 /��CC 98 PROJECT OR DEVELOPMENT NAME: ��14iepi.,‘ - Oakesdale Business Campus Phase I IS THE SITE LOCATED IN THE AQUIFER PROTECTION AREA? PROPERTY/PROJECT ADDRESS(S)/LOCATION: No NWC of SW 43rd Street & Oakesdale Ave.SW ` IS THE SITE LOCATED IN ANY OTHER TYPE OF ENVIRONMENTALLY SENSITIVE AREA? KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): There are wetlands existing on the site. 362304-9045 . t LEGAL DESCRU )N OF PROPERTY (Attach separ sheet if necessary) See attached. TYPE OF APPLICATION '& FEES Check all application types that apply--City staff will determine fees _ ANNEXATION $ SUBDIVISION: _ COMP. PLAN AMENDMENT $ REZONE $ LOT LINE ADJUSTMENT $ _ SPECIAL PERMIT $ _ SHORT PLAT $ _ TEMPOFARY PERMIT $ _TENTATIVE PLAT $ _ CONDIT ONAL USE PERMIT $ _ PRELIMINARY PLAT $ _ SITE PLAN APPROVAL $ FINAL PLAT $ _ GRADE & FILL PERMIT $ (NO. CU. YDS: ) PLANNED UNIT DEVELOPMENT: $ VARIANCE $ (FROM SECTION: ) _ PRELIMINARY WAIVER $ _ FINAL _ WETLAND PERMIT $ ROUTINE VEGETATION MOBILE HOME PARKS: $ MANAGEMENT PERMIT $ BINDING SITE PLAN $ SHORELINE REVIEWS: )C SUBSTANTIAL DEVELOPMENT $ _ CONDITIONAL USE $ VARIANCE $ _ EXEMP1IION $No Charge X ENVIRONMENTAL REVIEW $ 5/.V. REVISION $ AFFIDAVIT OF OWNERSHIP I, (Print Name Sh,14FCA2,D VeptEc0HI, declare that I am (please check one)_the owner of the property involved in this application,i the authorized representative to act for the property owner (please attach proof of authorization), and that the foregoing statements and answers herein contained and the information herewith submitted are in all respects true and correct to the best of my knowledge and belief. ATTEST: Subscribed and sworn to before me, a Notary Public, in and sa4t o' 2.r K(, for the State of '1 t to A residing at (Name : Owner ntativ hot �SS(ts , on the IQ day of / 1'vlpat u 19 g8. Ole t r r sentative) ( ignature of Notary bf , JAMES W.TAYLOR < r Commission# 1149509 z. r, Noraryr Pu4 C colifornia os An County (This section to be completed by City Staff.). Myc , ;r sAVg1 2001 City File Number: tit,Aq-EA-04 ECF SA 'R SHPL CU LLA P AAD 'W FPUD SM SME MHP BSP A CPA Ai A TOTAL FEES: $ V. TOTAL POSTAGE PROVIDED: $ 3,ner REVISED 2/95 � , � LEGAL D SCRIPTION: Parcel H: The West 85 ffet in width of the following described property: That portion ( f the Northwest quarter of the Northeast quarter of Section 36, Township 23 North, Range 4 East, Willamette Meridian, in King County, Washington, described as follows: BEGINNING at a point on the North side of S. W. 43rd Street which is 943. 04 feet East of the Northeast corner of Henry Adams Donation Land Claim No. 43, in Section 36, Township 23 North, Range 4 East, Willamette Meridian, in King County, Washington; THENCE East 353. 04 feet, along the North side of said street; THENCE North 562. 16 feet to Spring Brook Slough Drainage Ditch No. 1; THENCE Westerly, along the South side of said ditch, 334. 12 feet to the East line of a 5-acre tract deeded to Winston as recorded in Volume 580 of Deeds, page 207, in King County, Washington; THENCE Southerly, along said line, 472. 1 feet to the POINT OF BEGINNING; EXCEPT that portion thereof condemned in King County Superior Court Cause Number 81-2-08117-7 for widening of S, W. 43rd Street. Parcel I: That portion of the Northwest quarter of the Northeast quarter of Section 36, Township 23 North, Range 4 East, Willamette Meridian, in King County, Washington, described as follows: BEGINNING at a point on the North side of S. W. 43rd Street which is 943. 04 feet East and 30 feet North of the Northeast corner of Henry Adams Donation Land Claim No. 43, in Section 36, Township 23 North, Range 4 East, Willamette Meridian, in King County, Washington; THENCE East 353. 04 feet, along the North side of said street; THENCE North 562. 12 feet to Spring Brook Slough Drainage Ditch No. 1; THENCE Westerly, along the South side of said ditch, 334. 12 feet to the East line of a 5-acre tract deeded to Winstol as recorded in Volume 580 of Deeds, page 207, in King County, Washington; THENCE Southerly, along said line, 472. 1 feet to the POINT OF BEGINNING; EXCEPT the Westerly 85 feet thereof in width; and EXCEPT that portion thereof condemned in King County Superior Court Cause Number 81-2-08117-7 for widening of S. W. 43rd Street. Parcel J: The East 393-1/2 feet of the Northwest quarter of the Northeast quarter of Section 36, Township 23 North, Range 4 Est, Willamette Meridian, in King County, Washington, tying south of Spring Brook Slough Drainage pitch Na 1; EXCEPT that portion thereof for S. W. 43rd Street right-of-way; and EXCEPT the So,+th 20 feet of said premises conveyed to the City of Renton for widening of S. W. 43rd Street by deed recorded under Recording Number 5895669; and DEVELOPMENT PLANNING CITY OF RENTON THE ZELMAN COMPANIES JUN 01 1998 707 WILSHIRE BOULEVARD, SUITE 3036 • LOS ANGELES, CA 90017 •TELEPHONE (213) 533-8100 •■\ir5` ED May 22, 1998 VIA FAX NO. 425/277-4455 Ms. Jana Huerter City of Renton 200 Mill Avenue South Renton, Washington 98055 Re: Former Sternco Site Renton, Washington Dear Ms. Huerter: This letter shall authorize Sanford Kopelow to execute the Submissions and Applications on behalf of Zelman Renton, LLC. Sincerely, ZELMAN RENTON, LLC By: ZELMAN INDUSTRIAL PARTNERS, INC. By: (flOrfilr Brett M. Foy Vice President BR/am cc: Ben Reiling Paul T. Casey Dick Burr bmf/huerter renton 0205 ZELMAN DEVELOPMENT CO. ZELMAN INDUSTRIAL PARTNERS,INC. ZELMAN RETAIL PARTNERS,INC. A CALIFORNIA CORPORATION A CALIFORNIA CORPORATION A CALIFORNIA CORPORATION PROJECT NARRATIVE for OAKESDALE BUSINESS PARK PHASE I - SOUTH PORTION Our Job No. 5911 • The proposed project consists of approximately 11.2 acres of currently undeveloped, vacant land, located on the south side of Springbrook Creek and the north side of S.W. 43rd Street, near the intersection of Oakesdale Avenue S.W. The site has recently been cleared of existing deciduous and evergreen trees. Five existing abandoned wood structures have also been removed. The clearing and demolition work is being completed under an Environmental Consent Agree issued by the Washington State Department of Ecology. No structures or improvements exist on the property except for an existing 12-inch waterline that extends from S.W. 43rd Street to the north across the site and beneath Springbrook Creek. • The name of the adjacent water abutting the north side of the property is Springbrook Creek. • Springbrook Creek consists of an 8- to 12-foot wide channel with side slopes of approximately 2 horizontal to 1 vertical, at a depth of approximately 8 to 10 feet. The shoreline generally consists of grass and brush along the top of the channel and extending down the slope of the channel to approximately the ordinary highwater mark. The material along the side slopes and bottom of the channel generally consists of silt and sand. • Work proposed under this application does not include the construction of any buildings or structures that would potentially obstruct views of surrounding properties. • The ultimate proposed use of the property will be to construct several commercial and retail buildings on the site. A Boundary Line Adjustment is currently in process with the City to adjust existing lot lines to better accommodate future development. Work proposed under this application consists only of storm drainage, sanitary sewer line, and waterline improvements to serve future development. Additional environmental, shoreline, and development permits will be required for each of the individual lots prior to development of these parcels. The proposed improvements include the construction of an open stormwater detention and water quality treatment facility to serve the future development, a stormwater conveyance system with stubs to each of the future development lots, a sanitary sewer mainline extension with sewer stubs to each of the future development lots and a possible waterline extension. These improvements are located within 200 feet of the ordinary highwater mark of Springbrook Creek and,therefore,require a shoreline permit prior to construction. • The estimated construction cost of the proposed improvements is approximately $150,000, based on a preliminary construction cost estimate of the unapproved construction plans. • Construction of the project is scheduled to begin on or C about July 15, 1998, and is anticipated to be completed by October 15, 1998. DE ELOP�.;ENT p��';�l1,y G►N OF RENTUN MQY 2 6 1998 5911.012[DKB/jss/bd] RECEIVED May-22-98 01 : 25P ZELMAN EXEC DEPT 213 533 8134 P . 02 • THE ZELMAN COMPANIES -iU'WU SHIRE RU'U'.EVARD. SUITE 3036• LOS ANGEI.Ei.CA f)OOI7 •TELEPHONE (213) ,33•1100 • FAX (213) 533-Rt1R May 22, 1998 VIA FAX NO. 425/277-4455 Ms. Jana Huerter City of Renton 200 Mill Avenue South Renton, Washington 98055 Re: Former Sternco Site Renton, Washington Dear Ms. Huerter: This letter shall authorize Sanford Kopelow to execute the Submissions and Applications on behalf of Zelman Renton, LLC. Sincerely, ZELMAN RENTON, LLC By: ZELMAN INDUSTRIAL PARTNERS, INC. rilgrillt By: r kl3G Brett M. Foy Dev CoP%, Re" OrN Vice President MAY2 "" BR/am 'DECEIVED cc: Ben Reiling Paul T. Casey Dick Burr 111111'i1n11Mcr rcntan 0205 ZELMAN DEVELOPMENT CO. ZELMAN INDUSTRIAL PARTNERS,INC. ZELMAN RETAIL PARTNERS.INC. A CAI.ri/4NIA I.:If 11':>'tA I if A CAL i c,nrlIA(:OrIPi;I:AT.ON A CA.II'ntN'A CCO4i'ORA I ON Purpose of Checklist: The State Environmental Policy Act(SEPA), Chapter 43.21C RCW, requires all governmental agencies to consider the environmental impacts of a proposal before making decisions. An Environmental Impact Statement(EIS) must be prepared for all proposals with probable significant adverse impacts on the quality of the environment. The purpose of this checklist is to provide information to help you and the agency identify impacts from your proposal (and to reduce or avoid impacts from the proposal, if it can be done) and to help the agency decide whether and EIS is required. Instructions for Applicants: This environmental checklist asks you to describe some basic information about your proposal. Governmental agencies use this checklist to determine whether the environmental impacts of your proposal are significant, requiring preparation of an EIS. Answer the questions briefly, with the most precise information known, or give the best description you can. You must answer each question accurately and carefully, to the best of your knowledge. In most cases, you should be able to answer the questions from your own observations or project plans without the need to hire experts. If you really do not know the answer, or if a question does not apply to your proposal; write "do not know" or "does not apply." Complete answers to the questions now may avoid unnecessary delays later. Some questions ask about governmental regulations, such as zoning, shoreline, and landmark designations. Answer the questions if you can. If you have problems, the governmental agencies can assist you. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit the checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impacts. Use of the Checklist for Nonproject Proposals: Complete this checklist for nonproject proposals, even though questions may be answered "does not apply." IN ADDITION, complete the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (Part D). For nonproject actions(actions involving decisions on policies, plans or programs), the references in the checklist to the words "project," "applicant," and "property or site" sh9yld be read as "proposal," "proposer," and "affected geographic area," respectively. FAO OP� '/4 y `ATE" • �' 8 -1- 5911.014 [DKB/sm] r CITY OF RENTON ENVIRONMENTAL CHECKLIST OUR JOB NO. 5911 A. BACKGROUND 1. Name of proposed project, if applicable: Oakesdale Business Campus -south of Springbrook Creek. 2. Name of Applicant: The Zelman Company. 3. Address and phone number of applicant and contact person: 707 Wilshire Boulevard, Suite 3036 Los Angeles, CA 90017 Contact Person: Daniel K. Balmelli Barghausen Consulting Engineers, Inc. 18215 72nd Avenue South Kent, WA 98032 (425)251-6222 4. Date checklist prepared: May 26, 1998. 5. Agency requesting checklist: City of Renton. 6. Proposed timing or schedule(including phasing, if applicable): Construction of storm drainage and utility improvements is scheduled for July of 1998. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. There are plans for future development of the project site, however, any future development will be submitted under separate environmental application and is not included as part of this proposal. 8. List any environmental information you know about that has been prepared, or will he prepared, directly related to this proposal. 2- 5911.014 [DKB/sm] Existing wetlands are located on the north side of Springbrook Creek, which will be altered and mitigated as part of a soils remediation program and consent decree with the State of Washington Department of Ecology. Several existing buildings and some clearing work is being completed on the proposed project site under the DOE Consent Decree, however, there are no existing wetlands on the project site covered under this application. A previous environmental review and environmental determination was issued by the City for the proposed project as part of the rezone process from Medium Industrial to Commercial zone. 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. A Boundary Line Adjustment Application is currently in process. 10. List any government approvals or permits that will be needed for your proposal, if known. • Grading Permit • Storm Drainage Permit • Utility Permit • HPA Permit from Washington Fish and Wildlife • Stormwater Discharge Permit from King County Drainage District No. 1 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 project includes the construction of a new stormwater detention and water quality treatment facility, storm drainage conveyance system with stub-outs to future lots, sanitary sewer extension with stub-outs to future lots, possible watermain extension and construction of portions of a gravel pedestrian trail. Building and construction permits for development of the individual lots will be completed under separate environmental and building permit applications. 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 topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The project consists of 12.3± acres of mostly vacant property located along the south side of Springbrook Creek near the corner of S.W. 43rd Street and Oakesdale Avenue. The site is located in a portion of Section 36, Township 23 North, Range 4 East, W.M., within the city of Renton, King County, Washington. A legal description and vicinity map are included on the site and construction plans attached to this submittal. -3- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site(circle one): Flat, rolling, hilly, steep slopes, mountainous, other The topography of the site is relatively flat with approximately 4 feet of grade difference across the site. b. What is the steepest slope on the site (approximate percent slope)? The steepest slope on the site is approximately 5 to 10 percent, with the exception of the side slopes of Springbrook Creek lying adjacent to the project site along the north side. c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. According to the Geotechnical Engineering Study prepared by Earth Consultants Inc., dated May 6, 1987, the site is typically underlain by 35 to 40 feet of interfingering and poorly stratified silty sands and sandy or clay silts with occasional peat interbeds 4 to 5 feet thick at depths of 10 to 15 feet. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. Approximately 8,000 cubic yards of excavation and fill work will be completed to construct the stormwater detention and water quality treatment pond and for excavation of the utility trenches for the drainage and utility improvements. Except for bedding -4- 5911.014[DKB/am] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT material where required, no imported material is anticipated for completion of the project. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Yes, however, erosion should be minimal due to the flat grades and the anticipated construction period during the summer months. Also, a temporary erosion and sedimentation control plan will be designed and implemented during the construction phase in accordance with City of Renton standards. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? No portion of the site will be covered with impervious area under the proposed application. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. Temporary erosion control measures will be implemented during the construction phase as required by the City to reduce and control erosion. 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. Emissions from construction equipment and dust from the excavation and utility work will potentially result from the proposal. -5- 5911.014[DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT b. Are there any off-site sources of emissions? No. c. Proposed measures to reduce or control emissions or other impacts to air, if any. Construction equipment will be required to meet state emission control standards, and dust will be controlled by water trucks as required during construction. 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. Springbrook Creek is located along the north property line of the project site. 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described water? If yes, please describe and attach available plans. Yes. The proposed stormwater and utility construction work will be completed within 200 feet of the Springbrook Creek channel. Please refer to the Storm Drainage and Utility Construction Plan included as part of this application. 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. -6- 5911.014[DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT No filling or dredging will occur within the surface water of the creek. A new storm outlet will be constructed in accordance with approved plans and an HPA Permit from the U.S. Fish and Wildlife. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities, if known. No. 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. The FEMA maps indicate a small portion of the site at the southeast corner located within the 100-year floodplain, however, from a review of the actual field topographic survey, site elevations at this location are above the 100-year flood elevation of Springbrook Creek. 6) Does the proposal involve any discharges of waste materials to surface water? If so, describe the types of waste and anticipated volume of discharge. No. 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. No. 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.). -7- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT 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: 1) Describe the source of runoff(including stormwater) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. The source of runoff to the site is from rainfall. The proposed project includes the construction of an open stormwater detention and water quality treatment facility to serve future development of the property. Surface water will be collected by catch basins and underground pipe and conveyed to the stormwater facility for treatment and detention prior to discharging into Springbrook Creek. 2) Could waste materials enter ground or surface waters? If so, generally describe. No. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any. Since the proposal does not include the construction of any new impervious pavement or buildings, impacts from stormwater runoff should be minimal. However, the completed stormwater facility and conveyance system will serve future development of the property and reduce and control surface water runoff impact to the downstream system. 4. Plants -8- 5911.014[DKB/am] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT 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 pasture crop or grain wet soil plants: cattail, buttercup, bulrush, skunk cabbage, other water plants: water lily, eelgrass, milfoil, other other types of vegetation b. What kind and amount of vegetation will be removed or altered? Existing trees, shrubs and grass will he removed within the area of construction. c. List threatened or endangered species known to be on or near the site. None are known. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any. Areas disturbed during the construction phase will be hydroseeded after completion of the project to help prevent erosion and stabilize the site. Landscape improvements will be completed as part of the future development proposals. 5. Animals a. Circle any birds an animals which have been observed on or near the site or are known to be on or near the site: X birds: hawk, heron, eagle, sonabirds, other mammals: deer, bear, elk, beaver, other fish, bass, salmon, trout, herring, shellfish, other -9- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE ('OMPLETED BY APPLICANT b. List any threatened or endangered species known to be on or near the site. None are known. c. Is the site part of a migration route? If so, explain. Not to our knowledge. d. Proposed measures to preserve or enhance wildlife, if any. None are proposed as part of this application. 6. Energy and Natural Resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. None are needed for the work proposed under this application. 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. None are required or proposed. 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. No. -10- 5911.014[DKB/am] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT 1) Describe special emergency services that might he required. None. 2) Proposed measures to reduce or control environmental health hazards, if any. Other than normal construction safety procedures during the construction phase, none are proposed. b. Noise: 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? None. 2) What types and levels of noise would be created by or associated with the project on a short-term or long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. During the construction phase, normal noise from construction equipment will occur during the hours of approximately 7:00 a.m. to 5:00 p.m. 3) Proposed measures to reduce or control noise impacts, if any. Construction equipment will be required to meet state standards for noise control. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? The site is currently undeveloped and did contain several old -11- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT structures which were removed as part of the DOE Consent Decree and demolition permits. Adjacent property to the north is a vehicle storage/staging yard. To the east is warehousing, manufacturing and offices. To the south is warehousing and manufacturing, and to the west is railroad right-of-way and existing wetlands. b. Has the site been used for agriculture? If so, describe. The site was previously used for agriculture, however, specific dates are unknown. c. Describe any structures on the site. The site previously contained approximately five small wood frame buildings which were unoccupied, however, these structures have recently been removed as part of the DOE Consent Decree and demolition permits. d. Will any structures be demolished? If so, what? Yes. The existing structures have recently been removed. e. What is the current zoning designation of the site? The current zoning of the site is Commercial due to a recent rezone. f. What is the current comprehensive plan designation for the site? Employment Area -Valley. g. If applicable, what is the current shoreline master program designation of the site? Springbrook Creek requires a 50-foot development setback from the ordinary high water mark for commercial uses. h. Has any part of the site been classified as an "environmentally -12- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT sensitive" area? If so, specify. Springbrook Creek, located along the north side of the property, is classified as environmentally sensitive. i. Approximately how many people would reside or work in the completed project? None under this application. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any. None. I. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any. Construction of the proposed drainage and utilities will be based on approved plans by the City of Renton. 9. Housing a. Approximately how many units would he provided, if any? Indicate whether high, middle, or low income housing. Not applicable. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low income housing. Not applicable. -13- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT c. Proposed measures to reduce or control housing impacts, if any. Not applicable. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? Not applicable. b. What views in the immediate vicinity would be altered or obstructed? None. c. Proposed measures to reduce or control aesthetic impacts, if any. None are proposed. 11. Light and Glare a. What type of light or glare will the proposals 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? No. c. What existing off-site sources of light or glare may affect your proposal? None. -14- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT d. Proposed measures to reduce or control light and glare impacts, if any. None. 12. Recreation a. What designation and informal recreational opportunities are in the immediate vicinity? None are known. b. Would the proposed project displace any existing recreational uses? If so, describe. No. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any. Construction of a gravel pedestrian trail along Springbrook Creek will provide some recreational opportunities. 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, national, state or local preservation registers to be on or next to the site. If so, generally describe. None. b. Generally describe any landmarks or evidence of historic, ar- chaeological, scientific, or cultural importance known to be on or next to the site. None. -15- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT c. Proposed measures to reduce or control impacts, if any. None. 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. S.W. 43rd Street is located adjacent to the site on the south side of the property, and Oakesdale Avenue is located adjacent to the site on the east side. It is anticipated that future development will obtain access from both of these streets. b. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Public transit is provided along S.W. 43rd Street. 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). None are proposed under this application. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. Not under this application. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. -16- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT None. g. Proposed measures to reduce or control transportation impacts, if any. None are proposed. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. Not under this application. h. Proposed measures to reduce or control direct impacts on public services, if any. None are proposed. 16. Utilities a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. b. Describe the utilities that are proposed for the project, the utilities providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Stormwater Facilities: City of Renton Sewer Extension: City of Renton and METRO Water Extension: City of Renton -17- 5911.014 [DKB/sm] EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT 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 by any willful misrepresentation or willful lack of full disclosure on my part. Proponent: Name Printed: ,0i F/r c.67/9-2 -18- 5911.014[DKB/sm] Q. V� CIVIL ENGINEERING,LAND PLANNING,SURVEYING,ENVIRONMENTAL SERVICES c .17 May 28, 1998 • ` -41G er401c►1�`•y DEVELOPMENT FL", .,•JiNG CITY OF RENTON Peter Rosen MAY 2 « 1998 City of Renton �������� Development Services 200 Mill Avenue South Renton, WA 98055 RE: Application for Environmental and Shoreline Review - Oakesdale Business Campus Phase 1 Our Job No. 5911 Dear Peter: Enclosed with this submittal are the required plans and documents for an Environmental Review and a Shoreline Substantial Development Permit. The proposed Oakesdale Business Campus is located on the northwest corner of S.W. 43rd Street and Oakesdale Avenue S.W. Phase 1 of this project is currently under review for a Lot Line Adjustment and Utility Installation Permit. Enclosed for your review and use are the following plans and documents: 1. Twelve copies of the Master Application with attached legal description. 2. Twelve copies of the Environmental Checklist(the original and eleven copies). 3. Two sets of mailing labels for 300 foot radius. 4. Two copies of the list of current property owners. 5. One check in the amount of $2,000 for Plan Review fees (SEPA - $1,000 and Shoreline - $1,000). 6. Eleven copies of the Neighborhood Detail Map. 7. Twelve copies of the Grading, Drainage, and Utility Plan. 8 Four copies of the Storm Drainage Report. 9. One 8 1/2 x 11 inch reduction of each plan sheet, including a 4 x 6 inch reduction of the Neighborhood Detail Map. 11). One color copy of the Neighborhood Detail Map. 11. Twelve copies of the Project Narrative. 18215 72ND AVENUE SOUTH KENT,WA 98032 (425)251-6222 (425)251-8782 FAX Peter Rosen City of Renton Development Services -2- May 28, 1998 Please proceed to begin the Environmental and Shoreline review for this project. Please contact me or Dan Balmelli of this office if you have any questions or need any additional information at this time. Thank you for your help. Sincerely, Betsy Dyer Executive Assistant BD/jss [5911C.004] enc: As Noted cc: Paul Casey, The Zelman Companies (w/enc) Sandy Kopelow, The Zelman Companies (w/enc) Daniel K. Balmelli, Barghausen Consulting Engineers DEVELOPMENT SERVICES DIVISIO,. WAIVER OF SUBMITTAL REQUIREMENTS FOR LAND USE APPLICATIONS LAUD USE PERMIT SUBMITTAL WAIVED MODIFIED - REQUIREMENTS: BY: BY: „ COMMENTS: Calculations, Survey, Drainag:a Control Plan 2 Drainage Report 2 +r Elevations, Architectural 3 AND 4 1'MN' Elevaticns, Grading 2 Existing Covenants (Recorded Copy)4 Existing Easements (Recorded Copy) 4 Flood Plain Map, if applicable 4 Floor Plans 3AND4 4kiAi Geoteclinical Report 2ANos Gradinc Plan, Conceptual 2 Grading Plan, Detailed 2 King County Assessor's Map Indicating Site Landsc,iping Plan, Conceptuala LOVA, Legal Description 4 List of Surrounding Property Owners 4 Mailing Labels for Property Owners 4 Map of Existing Site Conditions 4 Master Application Form 4 Monument Cards (one per monument) , Parking, Lot Coverage & Landscaping Analysis 4 Plan Reductions (PMTs) 4 Postage 4 Public Works Approval Letter2 Title Report or Plat Certificate 4 Topography Map (5' contours)3 Traffic Study 2 a Tree C ittingNegetation Clearing Plano Utilities Plan, Generalized 2 Wetlands Delineation Map4 Wetlands Planting Plan 4 Wetlands Study 4 This ri!quirement may be waived by: q �' 1. Property Services Section PROJECT NAME: Otkkt z (124. ,.f_ "_5 P 2. Public Works Plan Review Section 3. Building Section DATE: C7P' l el 4. Development Planning Section h:\division.s\develop.ser\dev.plan.ing\waiver.xls **************************************************************** City of Renton WA Reprinted: 05/28/98 15 : 13 Receipt **************************************************************** Receipt Number: R9803266 Amount : 1, 503 . 84 05/28/98 15 : 13 Payment Method: CHECK Notation: #005054 ZELMAN Init : LMN Project # : LUA98-090 Type: LUA Land Use Actions Total Fees : 1, 503 . 84 This Payment 1, 503 . 84 Total ALL Pmts : 1, 503 . 84 Balance: . 00 **************************************************************** Account Code Description Amount 000 . 345 . 81 . 00 . 0007 Environmental Review 500 . 00 000 . 345 . 81 . 00 . 0016 Shoreline Subst Dev 1, 000 . 00 000 . 05 . 519 . 90 . 42 . 1 Postage 3 . 84 ,— TECHNICAL INFORMATION REPORT FOR QAKESDAL BUSINESL. S PARK PHASE TON WASHINGTON REN. • 4Fer '- r V `tr OUR JOB NO. 5911 ,Cl/ JANUARY 29, 1998 3p� ,o) 24661 4�3 � • ASS/pNTER f c..?:R:3 / 8 Prepared By: BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72ND AVENUE SOUTH KENT, WASHINGTON 98032 GHAc,� (425) 251 -6222 co CIVIL ENGINEERING, LAND PLANNING, SURVEYING, ENVIRONMENTAL SERVICES iyG�6eaE I. INTRODUCTION/GENERAL INFORMATION 1.0 PROJECT OVERVIEW The proposed Oakesdale Business Park is an approximately 41-acre site located at the northwest corner of Oakesdale Avenue S.W. and S.W. 43rd Street in Renton, Washington. The site is situated in both the northwest quarter of the northeast quarter of Section 36, Township 23 North, Range 4 East and the northeast quarter of the northwest quarter of Section 36, Township 34 North, Range 4 East, Willamette Meridian, King County, Washington. Site development will occur in two phases. Springbrook Creek flows roughly west to east through the property. Phase II and III will consist of development of approximately 31.5 acres north of Springbrook Creek. Phase I will consist of development of approximately 9.8 acres south of Springbrook Creek. This Technical Information Report and accompanying set of design plans are prepared exclusively for Phase I of the development. Phase I of the Oakesdale Business Park includes a lot line adjustment and construction of a storm drainage conveyance system, wet/detention pond, and sanitary sewer main line to serve each proposed lot. Parcel owners will then be able to develop individual lots and tie into the proposed systems. No grading and/or paving improvements are proposed for Phase I at this time. A ridge line from the southwest corner to the northeast corner of Phase I roughly parallels Springbrook Creek and divides on-site drainage into two flow directions. Ultimately, all flow from Phase I is combined at the outlet end of the quadruple 72-inch corrugated metal pipe culverts conveying Springbrook Creek under Oakesdale Avenue S.W. • • 5911.005 [KWL/kn] Page 1 of 2 King County Department of Development and Environmental Services TECHNICAL INFORMATION REPORT (TIR) WORKSHEET PART 1 PROJECT OWNER AND • PART 2 PROJECT LOCATION PROJECT ENGINEER AND DESCRIPTION Project Owner Zellman Development Company Project Name Oakesdale Business Park, Phase 1 Address 707 Wilshire Boulevard, Suite 3036 Location Phone I:os Angeles, CA 9001 7 Township 23N Project Engineer Karl Lundberg Range 4E Company Barghausen Consulting Engineers, Inc. Section 36 Address Phone 18215 72nd Avenue South Kent, Project Size 31.5 AC WA 98032 (425) 251-6222 Upstream Drainage Basin Size 0 AC PART 3 TYPE OF PERMIT APPLICATION PART 4 OTHER PERMITS • ❑ Subdivision 0 DOF/GHPA 0 Shoreline Management ❑ Short Subdivision 0 COE 404 0 Rockery ❑ Grading 0 DOE Dam Safety 0 Structural Vaults • Corr mercial ❑ FEMA Floodplain 0 Other ❑ Other ❑ COE Wetlands ■ HPA 'ART 5 SITE COMMUNITY AND DRAINAGE BASIN • Community Grecn River Drai rage Basin Springbrook Creek, Green River 'ART 6 SITE CHARACTERISTICS • . ❑ River 0 Floodplain • Stream Springbrook Creek ■ Wetlands ❑ Critical Stream Reach 0 Seeps/Springs ■ Depressions/Swales 0 High Groundwater Table ❑ Lake 0 Groundwater Recharge ❑ Steep Slopes 0 Other ❑ Lakeside/Erosion Hazard •ART 7 SOILS . . • • Soil Type Slopes Erosion Potential Erosive Velocities Puyallup Flat Low Low Urban Flat Low Low 0 Additional Sheets Attached •ART 8 DEVELOPMENT LIMITATIONS REFERENCE LIMITATION/SITE CONSTRAINT o Ch.4-Downstream Analysis 0 ❑ Additional Sheets Attached 591 1.002[KL/ta] Page 2 of 2 King County Department of Development and Environmental Services TECHNICAL INFORMATION REPORT (TIR) WORKSHEET PART 9 ESC REQUIREMENTS • MINIMUM ESC REQUIREMENTS DURING MINIMUM ESC REQUIREMENTS FOLLOWING CONSTRUCTION CONSTRUCTION ■ Sedimentation Facilities IN Stabilize Exposed Surface IN Stabilized Construction Entrance ■ Remove and Restore Temporary ESC Facilities IN Perimeter Runoff Control • Clean and Remove All Site and Debris ❑ Clearing and Grading Restrictions ■ Ensure Operation of Permanent Facilities ■ Cover Practices ❑ Flag Limits of NGPES ■ Construction Sequence ❑ Other ❑ Other PART 10 SURFACE WATER SYSTEM ❑ Grass Lined Channel ❑ Tank 0 Infiltration Method of Analysis ■ Pipe System 0 Vault in Depression SBUH ❑ Open Channel 0 Energy Dissipater ❑ Flow Dispersal Compensation/Mitigation ❑ Dry Pond ❑ Wetland ❑ Waiver of Eliminated Site Storage ■ Wet Pond ❑ Stream ❑ Regional Detention Brief Description of System Operation Tightline conveyance system to wet I detention pond to provide detentic n and water quality prior to release to Soringbrook Creek. Facility Related Site Limitations 0 Additional Sheets Attached Referen ;e Facility Limitation PART 11 STRUCTURAL ANALYSIS • . • PART 12 EASEMENTS/TRACTS • (May require special structural review) • ❑ Cast in Place Vault IN Drainage Easement ❑ Retaining Wall 0 Access Easement ❑ Rockery > 4' High 0 Native Growth Protection Easement ❑ StrL ctural on Steep Slope 0 Tract ❑ Oth: r El Other PART 14 SIGNATURE OF PROFESSIONAL ENGINEER I or a civil engineer under my supervision have visited the site. Actual / V v site conditions as observed were incorporated into this worksheet and the attachments. To the best of my knowledge the information provided here is accurate. Si9n(•ate 591 1.002[KL/ta] $MU ...oc 7 pJ � D' X E 1 TYV 11 .'1 .R ATMENTPLANT i< l� `mot \ T • C. 10 - d Irth.'';.'1W1‘. ,Opi \ :;.'":;16.. CO :.." co< a 1 . cn =...000_ Mr �, Ta16o y,. l (n O •ilf s 1 s W Evans :� &ack Dr r.. O1 B .*. 8',d m k _ SW 23 ST _ 1 it 1 81vd SW 27 ST To 5 28 S . Treck Di - w 1 ' - SITE SW 29 ST y 167 . � . pin/sosT r -lj 25 S~ '° 30 V Y4} p� 4 ' a••317 ST. to SW 34 ST co ' j• H N ,�}\� ' J ' a W.395i i °S3Ps Cr• SWaeSi S N J • '+ a sw 41 ST SaxonDr t ' in PALLET l�nl'1. < MEDICAL $ T 1 ll • SW 43 ST CENTER )1,1. . ' . ;41 L. kw',i S 182 ST 36 N a 8 / --- i .t. t ► Isles sT' • s lacier cn CC CO t I S '88 ST � r. S,89 ST I^ __ _ <' I SITE LOCATION MAP NTS Reference: Greater Renton City Alap, 1987 Edition II. PRELIMINARY CONDITION SUMMARY Phase 1 ,� ,- _ /d x� . �� i i i' moo• x. i I ti / ' i 4. 1 I i . I 0 ___ , A‹y i d� j, xtiv - �_' ' ,� —�— ; �-- x � / `�� x e = % ° — I ! a'y60 i Spigbr °k _ / LIGt oX C ( . -—-- Phi 2 - j ---- '� __. -- • / / -/��f'// l /// / _/ '/�// III — Z. f /! •` I � I / (/ I �. --f / / 1_ X"/ .-mix.0ry, I / •(•� l _� �+ t 1 - a Y0 x� 4. / x�` y i y A� /, �- �,}^ r,": ) \•----_____ x''P ' / �,41 EXISTING.oUILDING�� � ! /%_\\\ J/.- __./ - x�. ;\ ' I N C • / \ I` a �/ -- GUY POLE/ WATER FAUCET �' i�`• xP i� • /l # IP /. xrx )• • 1 x I il Rim / / !"` I 1'I% a xP• _. .......„ �� -~ i �° PO4y�ER POI x� •�? I x / I I Jam_ xti �O 1,1 �E `� �`k 4 x x� ;� FENCIGH WOOD IM1ro;y. EXISTING - _ —t + x�d j ix •i. I + a, i BLDG. �, } j 1 I ---- t? i x I x ti I POWER POLE 04 / / �- r x y' M1..• I I x ,� x‘'' \ ,`r -\x •X x� 1 ,, ,�� xr. x _ ,� `,n ` 4. (O 1 1 xti11 \, x`N j • �' 6 �-6 J�+ x'�;x~fi(/. / CNI i � x v EL J-BOX M j - � �� x.:z: Ida. •/ • •� 4 I N"'1S / x4y '' X �' •• r. xM1• I • p4 ':O�` \ •L'�C� - 'X1 -_ -.x�� x43 .x'1;.'• 1 • 1�+ .'� =•L'L � •-ti.::k•}-:: \max -•� - , ryy. .•, \- . X.a / �''----- kyA'r::_.•.}::f:- �4,___----—mac . -/ i' ,! -- - x • M1 ` r ti. 7 •yam= .— _ —" —_— --- , , x x 0 j __ x 1 ti� x ). x x'ti* •• x -- �y: . .:-. .^::::: '.;.:'i.?.iii'cii:':.iiiti•' .:::•'.'".::. ': .. ii~.'...::o• .::::':r::7:.�::.:::::. :::.c. 1:. :r OAKESDALE BUSINESS PARK METER x,~ ,,� PHASE I 'D-_ l �� :: LUMINAIRE _ MONITOR WELL ti� Ice •n :.;.:. - FIRE HYDRANT a 25 r-`o i- . ._ - xaY _ ' X' x1� M1�°� fir-------�-,€LRE.2 .' POWER VAULT / �� �''' d-- • �' " -_ by n X - -- _ ------ - x^ + -- POWEF - EXISTI TG. = C600 'NDITIONSS —S,W. 43rd STREET ti -— - � — � "� - — - f ., by ' ti, .. ....._.„AA _ —‘. . WATER VALVE .• __ \j_ '• �� I. sal --4- -170/.11101k1 ��t I N€ / 1 g i • :M416 '4 t•PI4 i ri ? \ - : Jr . - : Longacre$;-I-' �Y1 r '•.li—Ie-I `R 1;�� ` Wo :eD aii. ▪••BeC, 1sl ' 1� I Ur �_ \ 5I % . • St I—~ —• •'I$FA Ul1. n• 11! r 10 Url 'ti 1 1■_11' i Ur 1 C 'ia ! O R rvoir «II J .. .. • I • So 1 ). • ' Wo �. ,t; )4 4, Pu •• I A • I 4;s., /,\,( � 169 ki 1 1/. Ur I r.. \.. ) Py SITE 1 Wo =r II u. ■I / !i _ u (Tu i I /' i / � _ ®loci a. 7_ woe_ 'CAN „.1 +_ , \ 4.... ___ 11111P So :I� iji py all ,a6w,:„:}4,42 1,15/I ,i, 1 7. - 'Agril, ali lir-'1/ 01t,.' .01L / --• . I. l' 4( I 1 m.,_ 1 _. ,_: \I ..‘ ir. #1[01 hIllW.....\:;\,„,,,.. . 1 . #:..1 i cs,, ) lirV. U? ...: .: 8 '' .'1.'1 3'ABM.1 I • ! ALO lVo o� II' ' ' /: Ma , KING COUNTY SOIL SURVEY MAP 1" = 2000' /14 n4 ws ' WZ'O (re)1 I( rv.9- d0 00_51 L.a2W 17 00/ f ' c5f ; NOA--4la rQ7 ape 2.= /1d s rref�/ LcV `,0 v `ree-) _ ,1S .417 po ; Nozh,ow,2 s7,Y/_1,51 X7 ' g = ""f, F-- soQ?n20aw/ wass /,8"6 (0 r r-vol4 NA,1,9a 7N/ 1 r✓r) -fre216/ d a7 ,t 7 h iezoki nr • z = o� o-z = 1 0 i,i /szdw'/QPda'1c$A- 9b iv N N N D-PsWsate/UPo' 't^.s�d N7 A►1-� cZP62fr2.4 Si dry() # 1Jr✓)4 f I Ati /v7 no.., r. fIl:T T /9-5. G- L- S/, S crtvi 5 .5 �7N/t'� 9 A o c S-,,B5 Sn �'trs (Wl1 N 2.24eRg_01 I i9`b?vi'J1 <-- ary NYe?Jn �n 9 _$c'ds.d 5-05 e ' AOrvtYC rvy de,776/A : Ad r-r•45- 9,Addbw •c AZ/^.9 -,/a. o (Vi �✓ 3 r ecO /c a KING COUNTY. WASHINGTON, SURFACE WATER DESIGN MANUAL (2) CN values can be area weighted when they apply to pervious areas of similar CN's (within 20 CN points). However, high CN areas should not be combined with low CN areas (unless the low CN areas are less than 15% of the subbasin). In this case, separate hydrographs should be generated and summed to form one hydrograph. FIGURE 3.5.2A HYDROLOGIC SOIL GROUP OF THE SOILS IN KING COUNTY i HYDROLOGIC HYDROLOGIC SOIL GROUP GROUP' SOIL GROUP GROUP* Alderwood C Orcas Peat D . Arents, Alderwood Material C Oridia D Arents, Everett Material B Ovall C Beausite C Pilchuck C Bellingham D Puget D Briscot 0 —'Puyallup Buckley D Ragnar B Coastal Beaches Variable Renton D Earimont Silt Loam D Riverwash Variable Edgewick C Salal C Everett A/B Sammamish D Indianola A Seattle D Kitsap C - Shacar D Klaus C Si Silt C Mixed Alluvial Land Variable Snohomish ish D Neilton A Sultan C Newberg B Tukwila D Nooksack C ') Urban I Variable I . Normal Sandy Loam D Woodinville D • HYDROLOGIC SOIL GROUP CLASSIFICATIONS A. (Low runoff potential). Soils having high infiltration rates, even when thoroughly wetted, and consisting chiefly of deep,well-to-excessively drained sands or gravels. These soils have a high rate of water transmission. 6. (Moderately low runoff potential). Soils having moderate infiltration rates when thoroughly wetted.and • • consisting chiefly of moderately fine to moderately coarse textures. These soils have a moderate rate of water transmission. • +• C. (Moderately high runoff potential). Soils having slow infiltration rates when thoroughly wetted, and consisting chiefly of soils with a layer that impedes downward movement of water, or soils with moderately fine to fine textures. These soils have a slow rate of water transmission. •D. (High runoff potential). Soils having very slow infiltration rates when thoroughly wetted and consisting chiefly of clay soils with a high swelling potential, soils with a permanent high water table, soils with a hardpan or clay layer at or near the surface, and shallow soils over nearly impervious material. These soils • have a very slow rate of water transmission. • • From SCS, TR-55, Second Edition, June 1936, Exhibit A-1. Revisions made from SCS, Soil Interpretation . Record, Form #5, September 1988. • 3.5.2-2 • 1 U92 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TABLE 3.5.2B SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS (Published by SCS in 1982) Runoff curve numbers for selected agricultural, suburban and urban land use for Type IA rainfall distribution, 24-hour storm duration. CURVE NUMBERS BY HYDROLOGIC SOIL GROUP LAND USE DESCRIPTION A B CD Cultivated Iand(1): winter condition 86 91 94 95 Mountain open areas: low growing brush and grasslands 74 82 89 92 Meadow or pasture: 65 78 85 89 Wood or forest land: undisturbed or older second growth 42 64 81 Wood or forest land: young second growth or brush 55 72 81 86 Orchard: with cover crop 81 88 94 Open spaces, lawns, parks, golf courses, cemeteries, landscaping. good condition: grass cover on 75% or more of the area 68 80 86 90 fair.condition: grass cover on 50% to 75%of the area 77 85 90 92 • Gravel roads and parking lots 76 85 89 91 Dirt roads and parking lots • 72 82 87 89 • Impervious surfaces, pavement, roofs. etc. • 98 98 98 98 Open water bodies: lakes, wetlands, ponds, etc. 100 100 0 100 Single Family Residential (2) Dwelling Unit/Gross Acre % Impervious (3) 1.0 DU/GA 15 Separate curve number 1.5 DU/GA • 20 shall be selected 2.0 DU/GA • 25 for pervious and • 2.5 DU/GA 30 impervious portion 3.0 DU/GA • 34 of the site or basin 3.5 DU/GA 38 4.0 DU/GA • 42 4.5 DU/GA 46 5.0 DU/GA 48 5.5 DU/GA • 50 6.0 DU/GA 52 6.5 DU/GA 54 7.0 DU/GA 56 • Planned unit developments, % impervious condominiums, apartments. must be computed commerdial business and industrial areas. (1) 'For a more detailed description of agricultural land use curve numbers refer to National Enc;^eering " • Handbook, Section 4, Hydrology, Chapter 9, August 1972. (2) Assumes roof and driveway runoff is directed into street/storm system. (3) The remaining pervious areas•(lawn) are considered to be in good condition for these curve -umbers. •_ •• 3.5.2-3 11/92 III. OFF SITE ANALYSIS IV. RETENTION/DETENTION ANALYSIS AND DESIGN 2.0 EXISTING SITE CONDITIONS Approximately one-third of the site lies north of the ridge line and drains directly into Springbrook Creek. The remaining two-thirds of the site sheetflows in a primarily southerly direction before reaching a poorly defined ditch, which conveys drainage toward Oakesdale Avenue S.W. The drainage is collected in a larger and better defined ditch just outside the Oakesdale Avenue S.W. right-of-way and is collected in the underground piping conveyance system of the roadway. Runoff is conveyed north beneath the east side of Oakesdale Avenue S.W. and is discharged into Springbrook Creek at the outlet end of the quadruple 72-inch CMP culverts. Existing soil conditions are listed in the King County soil survey as Puyallup (SCS hydrologic group B)and urban(variable). Type B soil texture is described in the King County Surface Water Design Manual as moderately fine to moderately coarse. The geotechnical engineering study by Earth Consultants Inc. dated December 8, 1997, contained in Section 6.0 of this report describes the soil's texture as fine. Therefore, we have used curve numbers that correspond to Type C soils, which have texture described as moderately fine to fine. 3.0 DEVELOPED AND FUTURE SITE CONDITIONS On-site flow patterns will not be significantly altered by the construction of the pond, storm drainage, and utilities as shown on the plans. As parcels are developed, however, storm drainage will be collected in a series of catch basins located in paved areas and conveyed to the storm drainage system provided to each lot. Storm drainage in future developed conditions of Phase I will be conveyed to the pond. - • 4.0 HYDROLOGIC ANALYSIS/DETENTION SYSTEM The storm drainage conveyance system is designed to convey the peak;flows from the 25-year/24- hour design storm at full flow conditions. The rational method is used to determine peak flow rates and Excel spreadsheet software is used for the computer calculations. The wet/detention pond is designed using hydrographs generated by the Santa Barbara Urban Hydrograph method. The pond is designed to release peak flows from the developed 2-year and 10- year/24-hour design storms at peak rates less than or equal to the existing condition peak rates for the 2-and 10-year/24-hour design storms, respectively. A 30 percent increase in volume over the required volume for the 10-year/24-hour design storm has been added. WaterWorks software is used to calculate the peak flows, design volumes, and outlet control. Water quality is being provided in a wet pond portion of the wet/detention pond. The required wet pond volume of total runoff from the developed 6-month/24-hour design storm has been doubled to eliminate the need for a biotiltration swale preceding the wet/detention pond. 5911.005 [KWL/kn] 1/29/98 5: 21: 50 pm Barghausen Engineers page Oakesdale Business Park, Phase 2 Detention pond Design 5911-DET BASIN SUMMARY BASIN ID: dev02yr NAME: 2yr/24hr post-developed SBUH METHODOLOGY TOT!L AREA • 9 . 89 Acres BASEFLOWS: 0 . 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 2 . 00 inches AREA. . : 1. 48 Acres 8 . 41 Acres TIME INTERVAL • 10. 00 min CN • 86. 00 98 . 00 TC • 20 . 12 min 14 . 72 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 25. 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0100 TcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0. 0100 TcReach - Channel L: 1600. 00 kc:42 . 00 s: 0. 0025 impTcReach - Sheet L: 100. 00 ns: 0 . 0110 p2yr: 2 . 00 s: 0. 0100 imprcReach - Channel L: 1600. 00 kc: 42 . 00 s: 0. 0025 PEAK RATE: 3 . 30 cfs VOL: 1. 35 Ac-ft TIME: 480 min BASIN ID: devl00yr NAME: 100yr/24hr post-developed SBUH METHODOLOGY TOTAL AREA • 9.89 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 3 . 90 inches AREA. . : 1. 48 Acres 8 .41 Acres TIME INTERVAL • 10. 00 min CN • 86. 00 98. 00 TC • 20. 12 min 14 . 72 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 25. 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0100 TcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0 . 0100 TcR>ach - Channel L: 1600. 00 kc:42 . 00 s: 0. 0025 impTcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0 . 0100 impTcReach - Channel L: 1600. 00 kc: 42 . 00 s: 0 . 0025 PEAK RATE: 6.94 cfs VOL: 2 .87 Ac-ft TIME: 480 min BASIN ID: devloyr NAME: 10yr/24hr post-developed SBUH METHODOLOGY TOTAL AREA • 9 . 89 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE TYPE1A PERV IMP PRECIPITATION • 2 . 90 inches AREA. . : 1. 48 Acres 8 . 41 Acres TIME INTERVAL 10. 00 min CN • 86 . 00 98 . 00 TC - 20. 12 min 14 . 72 min ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 25 . 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0100 TcReach - Sheet L: 100. 00 ns: 0 . 0110 p2yr: 2 . 00 s: 0 . 0100 TcReach - Channel L: 1600 . 00 kc: 42 . 00 s: 0 . 0025 impTcReach - Sheet L: 100. 00 ns: 0 . 0110 p2yr: 2 . 00 s: 0. 0100 impTcReach - Channel L: 1600. 00 kc: 42 . 00 s: 0. 0025 PEAK RATE: 5. 02 cfs VOL: 2 . 06 Ac-ft TIME: 480 min 1/29/98 5: 21: 50 pm Barghausen Engineers page 2 Oakesdale Business Park, Phase 2 Detention pond Design 5911 -DET BASIN SUMMARY BASIN ID: ex02yr NAME: 2yr/24hr predeveloped SBUH METHODOLOGY TOTAL AREA • 9 . 89 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 2 . 00 inches AREA. . : 9 . 89 Acres 0 . 00 Acres TIME INTERVAL • 10. 00 min CN • 81 . 00 0 . 00 TC • 107 . 53 min 0. 00 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 300. 00 ns: 0.4000 p2yr: 2 . 00 s: 0. 0100 TcReach - Shallow L: 450. 00 ks: 5. 00 s: 0. 0050 PEAK RATE: 0. 41 cfs VOL: 0. 50 Ac-ft TIME: 660 min BASIN ID: ex100yr NAME: 100yr/24hr predeveloped SBUH METHODOLOGY TOTAL AREA • 9 . 89 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 3 . 90 inches AREA. . : 9 . 89 Acres 0 . 00 Acres TIME INTERVAL • 10. 00 min CN • 81. 00 0. 00 TC • 107 .53 min 0. 00 min ABSTRACTION COEFF: 0. 20 TcREach - Sheet L: 300. 00 ns: 0. 4000 p2yr: 2 . 00 s: 0. 0100 TcREach - Shallow L: 450. 00 ks: 5. 00 s: 0. 0050 PEAF RATE: 1. 79 cfs VOL: 1. 68 Ac-ft TIME: 540 min BASIN ID: exl0yr NAME: l0yr/24hr predeveloped SBUI-I METHODOLOGY TOTAL AREA • 9 . 89 Acres BASEFLOWS: 0 . 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PREC"IPITATION • 2 .90 inches AREA. . : 9 . 89 Acres 0. 00 Acres TIMI INTERVAL 10. 00 min CN • 81 . 00 0. 00 TC • 107 . 53 min 0. 00 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 300. 00 ns: 0. 4000 p2yr: 2 . 00 s: 0. 0100 TcReach - Shallow L: 450. 00 ks: 5. 00 s: 0. 0050 PEAF: RATE: 0. 99 cfs VOL: 1. 02 Ac-ft TIME: 550 min 1/29/98 5: 21: 51 pm Barghausen Engineers page 3 Oakesdale Business Park, Phase 2 Detention pond Design 5911-DET HYDROGRAPH SUMMARY PEAK TIME VOLUME HYD RUNOFF OF OF Contrib NUM RATE PEAK HYDRO Area cfs min. cf\AcFt Acres 2 0. 397 1360 53553 cf 9.89 3 0.981 810 82292 cf 9.89 4 0.366 1450 50506 cf 9.89 5 0.735 1140 73230 cf 9.89 6 1. 361 800 106924 cf 9.89 `, 1/29/98 5: 21: 58 pm Barghausen Engineers page 4 Oakesdale Business Park, Phase 2 Detention pond Design 5911-DET STORAGE STRUCTURE LIST STORAGE LIST ID No. design Description: Design detention pond STORAGE LIST ID No. final Description: Final detention pond (+30%) 1/29/98 5: 21 : 58 pm Barghausen Engineers page 5 Oakesdale Business Park, Phase 2 Detention pond Design 5911-DET STAGE STORAGE TABLE CUSTOM STORAGE ID No. design Description: Design detention pond STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- 14.50 0.0000 0.0000 15.90 21403 0.4913 17.30 46332 1.0636 18.70 72775 1.6707 14.60 1529 0.0351 16.00 22932 0.5264 17.40 48132 1.1050 18.80 74752 1.7161 14.70 3058 0.0702 16.10 24732 0.5678 17.50 49932 1.1463 18.90 76730 1.7615 14.80 4586 0.1053 16.20 26532 0.6091 17.60 51732 1.1876 19.00 78707 1.8069 14.90 6115 0.1404 16.30 28332 0.6504 17.70 53532 1.2289 19.10 80805 1.8550 15.00 7644 0.1755 16.40 30132 0.6917 17.80 55332 1.2702 19.20 82903 1.9032 15.1C 9173 0.2106 16.50 31932 0.7331 17.90 57132 1.3116 19.30 85001 1.9514 15.2C 10702 0.2457 16.60 33732 0.7744 18.00 58932 1.3529 19.40 87099 1.9995 15.30 12230 0.2808 16.70 35532 0.8157 18.10 60910 1.3983 19.50 89198 2.0477 15.40 13759 0.3159 16.80 37332 0.8570 18.20 62887 1.4437 19.60 91296 2.0959 15.50 15288 0.3510 16.90 39132 0.8983 18.30 64865 1.4891 19.70 93394 2.1440 15.60 16817 0.3861 17.00 40932 0.9397 18.40 66842 1.5345 19.80 95492 2.1922 15.7C 18346 0.4212 17.10 42732 0.9810 18.50 68820 1.5799 19.90 97590 2.2404 15.8C 19874 0.4563 17.20 44532 1.0223 18.60 70797 1.6253 20.00 99688 2.2885 1/29/98 5: 21: 58 pm Barghausen Engineers page 6 Oakesdale Business Park, Phase 2 Detention pond Design 5911-DET STAGE STORAGE TABLE CUSYOM STORAGE ID No. final Description: Final detention pond (+30%) STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- 14.50 0.0000 0.0000 15.90 27825 0.6388 17.30 60232 1.3827 18.70 94607 2.1719 14.60 1987 0.0456 16.00 29812 0.6844 17.40 62572 1.4365 18.80 97178 2.2309 14.70 3975 0.0913 16.10 32152 0.7381 17.50 64912 1.4902 18.90 99748 2.2899 14.80 5962 0.1369 16.20 34492 0.7918 17.60 67252 1.5439 19.00 102319 2.3489 14.90 7950 0.1825 16.30 36832 0.8455 17.70 69592 1.5976 19.10 105047 2.4115 15.00 9937 0.2281 16.40 39172 0.8993 17.80 71932 1.6513 19.20 107774 2.4742 15.10 11925 0.2738 16.50 41512 0.9530 17.90 74272 1.7051 19.30 110502 2.5368 15.20 13912 0.3194 16.60 43852 1.0067 18.00 76612 1.7588 19.40 113229 2.5994 15.30 15900 0.3650 16.70 46192 1.0604 18.10 79183 1.8178 19.50 115957 2.6620 15.40 17887 0.4106 16.80 48532 1.1141 18.20 81753 1.8768 19.60 118684 2.7246 15.50 19875 0.4563 16.90 50872 1.1679 18.30 84324 1.9358 19.70 121412 2.7872 15.60 21862 0.5019 17.00 53212 1.2216 18.40 86895 1.9948 19.80 124139 2.8498 15.70 23850 0.5475 17.10 55552 1.2753 18.50 89466 2.0538 19.90 126867 2.9125 15.80 25837 0.5931 17.20 57892 1.3290 18.60 92036 2.1129 20.00 129594 2.9751 1/29/98 5: 21: 58 pm Barghausen Engineers page 7 Oakesdale Business Park, Phase 2 Detention pond Design 5911-DET DISCHARGE STRUCTURE LIST NOTCH WEIR ID No. 100yr Description: 100yr notch weir Weir Length: 0. 6000 ft. Weir height (p) : 2 . 3000 ft. Elevation 16. 60 ft. Weir Increm: 0. 10 MULTIPLE ORIFICE ID No. 2yr Description: 2yr/24hr design orifice Outlet Elev: 14 . 30 Elev: 12 .30 ft Orifice Diameter: 3 . 1250 in. COMBINATION DISCHARGE ID No. combine Description: combined discharge structure Structure: 2yr Structure: Structure: 100yr Structure: Structure: overflow RISER DISCHARGE ID No. overflow Description: Overflow riser Riser Diameter (in) : 12 .00 elev: 19.00 ft Weir Coefficient. . . : 9.739 height: 20. 00 ft Orif Coefficient. . . : 3 .782 increm: 0. 10 ft 1/: 9/98 5: 21: 59 pm Barghausen Engineers page 8 Oakesdale Business Park, Phase 2 Detention pond Design 59:.1-DET STAGE DISCHARGE TABLE COMBINATION DISCHARGE ID No. combine Description: combined discharge structure Structure: 2yr Structure: Structure: 100yr Structure: Structure: overflow STAG: <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> (ft) ---cfs (ft) ---cfs (ft) ---cfs (ft) ---cfs 14.30 0.0000 15.80 0.3246 17.30 1.3728 18.80 2.4692 14.40 0.0838 15.90 0.3352 17.40 1.5399 18.90 2.3606 14.50 0.1185 16.00 0.3455 17.50 1.7028 19.00 2.2197 14.60 0.1452 16.10 0.3555 17.60 1.8590 19.10 2.3530 14.70 0.1676 16.20 0.3653 17.70 2.0061 19.20 2.7061 14.80 0.1874 16.30 0.3748 17.80 2.1420 19.30 3.1883 14.90 0.2053 16.40 0.3840 17.90 2.2647 19.40 3.6945 15.00 0.2217 16.50 0.3931 18.00 2.3722 19.50 3.6514 15.'0 0.2370 16.60 0.4019 18.10 2.4626 19.60 3.5396 15.i0 0.2514 16.70 0.4708 18.20 2.5341 19.70 3.7801 15.20 0.2650 16.80 0.5845 18.30 2.5849 19.80 4.0042 15.40 0.2779 16.90 0.7221 18.40 2.6133 19.90 4.2150 15.50 0.2903 17.00 0.8748 18.50 2.6176 20.00 4.4147 15.E0 0.3022 17.10 1.0369 18.60 2.5961 15.73 0.3136 17.20 1.2041 18.70 2.5472 1/29/98 5:22 : 1 pm Barghausen Engineers page 9 Oakesdale Business Park, Phase 2 Detention pond Design 5911-DET LEVEL POOL TABLE SUMMARY MATCH INFLOW -STO- -DIS- <-PEAK-> STORAGE < DESCRIPTION > (cfs) (cfs) --id- --id- <-STAGE> id VOL (cf) 1/2 2yr/24hr design 0.41 3.30 design combine 16.55 2 32783.77 cf 10yr/24hr design 0.99 5.02 design combine 17.07 3 42109.29 cf 2yr/24hr final 0.41 3.30 final combine 16.21 4 34778.23 cf 10yr/24hr final 0.99 5.02 final combine 16.91 5 51072.03 cf 100yr/24hr final 1.79 6.94 final combine 17.29 6 60073.80 cf i O/4 k�'�J��:c,` S!ti ;`. P4R_V- -,e6 ✓4s l /A-7A'S s'1// / i,t) v�2►.r,6 vl/gi,N9 Sv S M. GJS e Z- , _v or ✓oL th►-a.�3 (3/P5f0 cknl (',4D - l e7vee2A rt-FO Aeefi4-5 el- 4 (sr ) 4v6 4 (5e) d Crr) VOL (cc) ZvOL 2-1'44/.2 j /4.c 17,871 O its74.5 1.s 2 95 J'Z 21,87a 218 ► l- 22, 23,400.o Z 46Soo 1S 24, g 3b 745lo l 1 g 932 fg,707.3 t 25-'70 7 26,¢BS f o2,3 1 ei 78,Zo 7 27,27S.O 1 2727s.- 20 28,c6s- ,zy,S'-, `- 14,6138 1 KING COUNTY, W ASHINGTON, SURFACE WATER DESIGN MANUAL FIGURE 3.5.1C 2-YEAR 24-HOUR ISOPLUVIALS '\ ii;igiritrNedANILUI Ali i iti • otillark-_, v-iii!:...%;!-T- -_.valleliel .- 111 tondilificAtfilir 'T'A -ell /q, taloa\ /IL. I a V lik‘ 0 .401trinlik Now, oir. "41111/4 ' .011-41. IRV" A \6*-- c..(P - .. ''' 10 iiirEITONINI ,--- _Irva, ...14411. iphiit I /.! / -1:-INIWIA1Pr_ ,;-° -110915, Willtits I # I flik , .. . , . .- ‘,. fti,...itteifirt4,- . 11-11 kiriAtiNp&q_j,44. I cy, 21? nikkAtill ''. 0.4h.lorrgew I ..&1 .4,44 • N q 1 ' .----. 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TOTAL PRECIPITATION IN INCHES 'r a� It whoutritio. 4p, M • 0 1 2 3 4 5 6 7 8 Mess cv N m KING COUNTY, W ASHINGTON, SURFACE WATER DESIGN MANUAL FIGURE 3.5.1E 10-YEAR 24-HOUR ISOPLUVIALS 2.1 - -- I - _� - - - - - - ------ ---- --------- ':\ vt-aHillir‘;01 iii iii • 22. ,2, itiaptima i A,, ..,70_ 23,E '� orglireoltirlA, , 25 ./. arOPRIVIATTras. , 2.6 / Ada, At lkiiii fAuf lit_ 41 c,--- 2.7 ., ,41104- Abp. ii, ..24,1.1p44 \ PN-- . - ... offighatspir : --1,44 1,,,...010, , ,,, , t., 2.6, = _....,,-.,,......i.L...,___, 2.4 . ! 2.-11,1112 00441 .18.4. ,ii 'filcr. , ` O „dg.ingi ltrio--'*.--4fOlaiiirAtilhilre 30 •- l�� Eli�y—=ram Ai, � .\ - ''''.., ':t.:.;41ilia : laduilim / 1111111....IIIIIIIMIll* 10/15kgailzm‘: •,, • •• 2 " \ i. ---:444* lik N 411.1.f ' ilYPJAP"-: -- 4100710111120S11111416-41114 4:1411tallikill‘74:7"74111-‘ N \ 7.0: r4 ; StWa..1r11111#111, , , _ , ..4.i ...: i' ll; 4tA9444.1‘r- w:mi 'd6,4 \S\ / ' - al t:\ 1 "/ gatzfi k ;it . . - . ‘.----.40,* --,< \,./ _ . fel . , t3 -I •. -- .....7A0,„.00 .4..... 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Ar . , Rupp ruitkw—EmmiA a • a,- . .. . wit tar, eigiPP4wr -,..or' k __ ,,,,,\ ,wr 1 04, "itc-s,;..„,lirdipii.dt, , , ,„. . __) E �> fit. ash/11WI "; i -- Ir/E1 f , 10-YEAR 24-HOUR PRECIPITATION A • 3.4 o'"*" ISOPLUVIALS OF 10-YEAR 24-HOUR v. ����'�r i' ^�,ro. - TOTAL PRECIPITATION IN INCHES nN� ��a - 0 1 2 3 4 5 6 7 8 Mlles J 'y"� KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL ?IGURE 3.5.1H 100-YEAR 24-HOUR ISOPLUVIALS .p--- - .iliw ides � - .. __r--- _• ---- i V- - -------- i. 40 0 II -. ikitvaraM1414 A..,v4 7:404a i , - , ( ./.4 livilPfalWAltpats Willill ' , ! , rigiiit 01110461,A .. 01110 \ Itt" t7.6 mligkirik Vilinsillint Tili ‘ tti w __41. 1 3-41 • : .r\ 4,401.11101. jargil 116111 3> 3 sissia........ 4:8-/ , tiitorsilier-Ar fondatikNol 1 r 1 4., ,, t.4.„ ,,,tip,A,-,kriv.0),,,,,, -, . 7, .,.„,,,_„.,..,_.,,,....,. ..,--- „.......v,,,,,„..v„„ . , ,, .,.... ,Vege~vElpi.-0 --Ilk .`iab'- 414..27 ,- -T4kalichfirillA, tOk-41-07.41% eho?ttel 4 ill, 1_ \ ,,,.,, ,we.,1.„14 ---risnoprfirear Amilik'grimmil-N" ''''..,:-,To tir, (0:..5 TelrAV,Oli f\iti • _____,..0„,tit, , • ..thi• ! lit ;ii �\�.g�* •�" %� a i" -STS -kI A - digNIt k a, viirl corr., -,,, i0-- 0., i 110.0..1,11\4TI iq 4,30,1‘ 4 4.k., 4• •••si_...raugmAar* a .1 r.y `11[�'�c �' !tar .ILL• • le �'�t _ 1.` 1. ,INCURVii1111 -�Atilt 11aggrriw i -- mwX I�I�IISR�I•�% �. .c!? '* ...it' Infill-w A a i Mb '7 Atoklic dittixive •�`� _s .psi ��, .--k - ec--- iorit 4&74 it .- LEN Q.:, k,ANPL Ai il 1 ?II ' II ! Mal ri*Sti• 4111%4110 i rftlillk -e. III Tamp WV k `3.- ili‘ i Illiii"; .° 111111.1111 b V Ai % vaspinicr.ilum bli ‘4*, • ,c-Tainsi 'ck i i al r---a 7 0. 11111 ki I j rtt 4 )1,••• 1 FA i i Oil I millartgal fill 'Wet) ; \)ii - :r limy, `1,-:.2='"Iimiortm...wimir %.40...t.si.._ ..0 . I '7 kariallairm i Ira \ 1 •I '•'1 f•, kir gallitrOU ri r I tr I filff al _ _ if 1 NOP m 4; i , 0 o Aly ,... it l % ix „. _ /,\ _ to_ inf. .; liiip.ouny !Ilk . )g4 e - lir •• ,/, _ ,....,,siminanitai arirmjillill yillIL' q\ 4 Iv --'"z---- - 1 ' -. _ 7 p - Few A.v.iw e fraircievoNvitpaa. dk . • ritivii ti • r4/1" neriVism,#.11P141014" t, c 4. 1 , lkt 1r=i ill I( NWAtflir .1 - ' . P% . . .trirA4i : via VWAIIIMS 6 F,JYEAR "4-HOUR PRECIPITATION o 3.4----ISOPLUVIALS OF 100-YEAR 24-HOUR tit. N �� NEr lirP 5 TOTAL PRECIPITATION IN INCHES 0• _ 0 1 2 3 4 5 6 7 8 Mlles w _� V. CONVEYANCE SYSTEM DESIGN AND ANALYSIS 1 1/29/98 5: 0: 39 pm Barghausen Engineers page 1 Oakesdale Business Park, Phase 2 , Renton Storm Drainage conveyance calculations 5911-con BASIN SUMMARY BASIN ID: CB1 NAME: Drainage to CB 1 SBUE METHODOLOGY TOTAL AREA • 2 . 23 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 3 . 40 inches AREA. . : 0 . 22 Acres 2 . 01 Acres TIME INTERVAL • 10. 00 min CN • 86 . 00 98 . 00 TC • 12 . 81 min 6 . 30 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 50. 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0200 TcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0. 0150 TcReach - Channel L: 500. 00 kc:42. 00 s: 0. 0025 PEAK RATE: 1. 51 cfs VOL: 0. 57 Ac-ft TIME: 480 min BASIN ID: CB2 NAME: Drainage to CB 2 SBUH METHODOLOGY TOTAL AREA • 2 . 29 Acres BASEFLOWS: 0 . 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 3 .40 inches AREA. . : 0. 23 Acres 2 . 06 Acres TIME INTERVAL • 10. 00 min CN • 86. 00 98. 00 TC • 12 . 81 min 6. 30 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 50. 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0200 TcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0. 0150 TcReach - Channel L: 500. 00 kc: 42 . 00 s: 0 . 0025 PEAK RATE: 1. 55 cfs VOL: 0. 58 Ac-ft TIME: 480 min BASIN ID: CB3 NAME: Drainage to CB 3 SBCH METHODOLOGY TOTAL AREA • 2 . 68 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 3 .40 inches AREA. . : 0. 27 Acres 2 . 41 Acres TINE INTERVAL 10. 00 min CN • 86. 00 98. 00 TC • 12 . 81 min 6. 30 min ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 50 . 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0200 TcReach - Sheet L: 100 . 00 ns: 0. 0110 p2yr: 2 . 00 s: 0 . 0150 TcReach - Channel L: 500 . 00 kc: 42 . 00 s: 0 . 0025 PEAK RATE: 1. 81 cfs VOL: 0 . 68 Ac-ft TIME: 480 min 1/29 /98 5: 0: 39 pm Barghausen Engineers page 2 Oakesdale Business Park, Phase 2 , Renton Storm Drainage conveyance calculations 5911-con BASIN SUMMARY BASIN ID: CB4 NAME: Drainage to CB 4 SBUH METHODOLOGY TOTAL AREA • 2 . 23 Acres BASEFLOWS: 0. 00 cfs RAIIFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 3 . 40 inches AREA. . : 0. 22 Acres 2 . 01 Acres TIME INTERVAL • 10 . 00 min CN • 86 . 00 98 . 00 TC • 12 . 81 min 6. 30 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 50 . 00 ns: 0 . 1500 p2yr: 2 . 00 s: 0. 0200 TcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0. 0150 TcReach - Channel L: 500. 00 kc:42 . 00 s: 0. 0025 PEAK RATE: 1. 51 cfs VOL: 0. 57 Ac-ft TIME: 480 min 1/29/98 5: 0: 39 pm Barghausen Engineers page 3 Oakesdale Business Park, Phase 2 , Renton Storm Drainage conveyance calculations 5911-con HYDROGRAPH SUMMARY PEAK TIME VOLUME HYD RUNOFF OF OF Contrib NUM RATE PEAK HYDRO Area cfs min. cf\AcFt Acres 1 6. 370 480 104455 cf 9.43 1/29/98 5 : 0 : 46 pm Barghausen Engineers page 4 Oakesdale Business Park, Phase 2 , Renton Storm Drainage conveyance calculations 5911-con REACH SUMMARY Network Reach N1 REACH <-AREA> <-DIA> LENGTH SLOPE < n > DSGN o % PIPE Ndepth %Depth Vact Vfull C_Area ID (Ac) (ft) (ft) ft/ft (cfs) (ft) (fps) (fps) Confluence with Network N2 Confluence with Network N4 P1 9.43 1.50 153.00 0.0033 0.0120 6.37 90.78 1.20 79.92 4.21 4.07 CB1 Network Reach N2 REACH <-AREA> <-DIA> LENGTH SLOPE < n > DSGN 0 % PIPE Ndepth %Depth Vact Vfull C_Area ID (Ac) (ft) (ft) ft/ft (cfs) (ft) (fps) (fps) P2 2.29 1.00 244.00 0.0031 0.0120 1.55 66.99 0.63 62.87 2.97 3.02 C62 Network Reach N4 REACH <-AREA> <-DIA> LENGTH SLOPE < n > DSGN a % PIPE Ndepth %Depth Vact Vfull C_Area ID (Ac) (ft) (ft) ft/ft (cfs) (ft) (fps) (fps) P4 2.23 1.00 76.00 0.0033 0.0120 1.51 63.11 0.60 60.41 3.04 3.12 CB4 P3 4.91 1.25 213.00 0.0031 0.0120 3.32 79.53 0.89 71.18 3.55 3.49 CB3 PIPE REACH ID No. P1 From: To: Pipe Diameter: 1. 5000 ft n: 0. 0120 Pipe Length : 153 . 0000 ft s: 0. 0033 Up invert 15. 0000 ft down invert: 14 . 5000 ft Collection Area: 9 . 4300 Ac. Design Flow 6. 3695 cfs Dsgn Depth: 1. 20 ft Pipe Capacity 7 . 0167 cfs Design Vel 4 . 2068 fps Travel Time: 0 . 61 min Pipe Full Vel 4 . 0750 fps PIPE REACH ID No. P2 From: To: Pipe Diameter: 1. 0000 ft n: 0. 0120 Pipe Length : 244 . 0000 ft s: 0. 0031 Up invert 15 . 7500 ft down invert: 15 . 0000 ft Collection Area: 2 . 2900 Ac. Design Flow 1. 5463 cfs Dsgn Depth: 0. 63 ft Pipe Capacity 2 . 3081 cfs Design Vel 2 . 9739 fps Travel Time: 1. 37 min Pipe Full Vel 3 . 0160 fps 1/29/98 5: 0: 46 pm Barghausen Engineers page 5 Oakesdale Business Park, Phase 2 , Renton Storm Drainage conveyance calculations 5911-con REACH SUMMARY PIPE REACH ID No. P3 From: To: Pipe Diameter: 1.2500 ft n: 0. 0120 Pipe Length : 213 . 0000 ft s: 0. 0031 Up invert 15. 6500 ft down invert: 15. 0000 ft Collection Area: 4 . 9100 Ac. Design Flow 3 .3163 cfs Dsgn Depth: 0.89 ft Pipe Capacity 4 . 1697 cfs Design Vel 3.5492 fps Travel Time: 1. 00 min • Pipe Full Vel 3.4871 fps PIPE REACH ID No. P4 From: To: Pipe Diameter: 1. 0000 ft n: 0. 0120 Pipe Length 76.0000 ft s: 0. 0033 Up invert 15.9000 ft down invert: 15. 6500 ft Collection Area: 2.2300 Ac. Design Flow 1.5069 cfs Dsgn Depth: 0. 60 ft Pipe Capacity 2 . 3877 cfs Design Vel 3.0377 fps Travel Time: 0.42 min Pipe Full Vel 3. 1200 fps KING COUNTY, W ASHINGTON, SURFACE WATER DESIGN MANUAL CURE 3.5.1F 25-YEAR 24-HOUR ISOPLUVIALS s .: ice— - - _r= — —/--_ N,.—._ —__.—._-7 irdr 2.6 . * iki.. 11/11/4-14 it ' 4' ''' . '\‘1. R . eirmr411.pswat..„0. .r AlreNti - 1 vA\, 8 it ...,si• Agiva, AI /•A 30 �. ram ., i it• /i t" timoriti ,_ 4 vii Wi4t 1111.16. 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L� Wen i 15 VOLdiM� Ra fl 2 x r�3 2 Ye/7.4 ace 7o? vo n 2 A( l /4,SZ7 c i ) E- Sic' .c- -e•u-r'>l P2,-44av'Ir- 2g6S-4Gr VOL yr tr Pa vvIotPD ; EL ,i- cs' AVG 61 d (cr: ✓o LF) : `0.5- /O, 3 74 G i/473 !.5' J2,0 12,9`7 ) ) SG, Ss-b Z.a 25, `7 Z )4,O 16,74I 47,22I l-1 3 /O r l4.s /7, Eric') s'.f4! ,76 ��L�M� P2.0 v/p6y) s 6.3 8 c ' ` > 2 t 6:(4 ) ✓ 1/29/98 5: 21: 9 pm Barghausen Engineers page Oakesdale Business Park, Phase 2 111 Wetpond Design 5911-DET BASIN SUMMARY BASIN ID: wetpond NAME: 1/3 2yr/24hr post-developed SBUH METHODOLOGY TOTAL AREA • 9 . 89 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE • TYPE1A PERV IMP PRECIPITATION • 0. 67 inches AREA. . : 1 . 48 Acres 8 . 41 Acres TIME INTERVAL • 10. 00 min CN • 86. 00 98 . 00 TC • 20 . 12 min 14 . 72 min ABSTRACTION COEFF: 0. 20 TcReach - Sheet L: 25. 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0100 TcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0. 0100 TcReach - Channel L: 1600. 00 kc:42 . 00 s: 0. 0025 impTcReach - Sheet L: 100. 00 ns: 0. 0110 p2yr: 2 . 00 s: 0. 0100 impTcReach - Channel L: 1600. 00 kc:42 . 00 s: 0. 0025 PEAK RATE: 0. 83 cfs VOL: 0. 34 Ac-ft TIME: 480 min 1 VI. SPECIAL REPORT AND STUDY GEOTECHNICAL ENGINEERING STUDY SOUTHWEST 43rd STREET AND OAKSDALE AVENUE SW RENTON, WASHINGTON E-3000-3 December 8, 1997 PREPARED FOR ZELMAN DEVELOPMENT COMPANY fit. � F wasCAhpks rJ `r�CrsiE° • IL�b\C7 .170NAL Kyle R. Campbell, P.E. Manager of Geotechnical Services Earth Consultants, Inc. 1805 - 136th Place Northeast, Suite 201 Bellevue, Washington 98005 (425) 643-3780 IMPORTANT INFORMATION ABOUT YOUR GEOTECHNICAL ENGINEERING REPORT More construction problems are caused by site subsur- technical engineers who then render an opinion about face condit ions than any other factor. As troublesome as overall subsurface conditions, their likely reaction to subsurface problems can be. their frequency and extent proposed construction activity.and appropriate founda- have been .essened considerably in recent years, due in tion design. Even under optimal circumstances actual large mea$ure to programs and publications of ASFE/ conditions may differ from those inferred to exist. The Association of Engineering Firms Practicing in because no geotechnical engineer, no matter how the Geosciences. qualified.and no subsurface exploration program, no matter how comprehensive,can reveal what is hidden by The following suggestions and observations are offered earth, rock and time. The actual interface between mate- to help yoJ reduce the geotechnical-related delays. rials may be far more gradual or abrupt than a report cost-overruns and other costly headaches that can indicates. Actual conditions in areas not sampled may occur during a construction project. differ from predictions. Nothing can be done to prevent the unanticipated,but steps can be taken to help minimize their A GEOTECHNICAL ENGINEERING impact. For this reason, most experienced owners retain their REPORT IS BASED ON A UNIQUE SET geotechnical consultants through the construction stage, to iden- tify variances.conduct additional tests which may be OF PROJECT-SPECIFIC FACTORS needed.and to recommend solutions to problems encountered on site. A geotech nical engineering report is based on a subsur- face exploration plan designed to incorporate a unique SUBSURFACE CONDITIONS set of pro ect-specific factors. These typically include: the general nature of the structure involved. its size and CAN CHANGE configuration; the location of the structure on the site Subsurface conditions may be modified by constantly and its orientation: physical concomitants such as changing natural forces. Because a geotechnical engi- access roads. parking lots,and underground utilities. veering report is based on conditions which existed at and the level of additional risk which the dient assumed the time of subsurface exploration,construction decisions by virtue of limitations imposed upon the exploratory program. To help avoid costly problems.consult the should not be based on a geotechnical engineering report whose geotechnical engineer to determine how any factors adequacy may have been affected by time.Speak with the geo- which ch Inge subsequent to the date of the report may technical consultant to learn if additional tests are affect its recommendations. advisable before construction starts. Unless your consulting geotechnical engineer indicates Construction operations at or adjacent to the site and otherwisa. your geotechnical engineering report should not natural events such as floods,earthquakes or ground- be used: water fluctuations may also affect subsurface conditions •When the nature of the proposed structure is and, thus. the continuing adequacy of a geotechnical chi raged.for example.if an office building will be report.The geotechnical engineer should be kept erected instead of a parking garage.or if a refriger- apprised of any such events.and should be consulted to ated warehouse will be built instead of an unre- determine if additional tests are necessary. fri€crated one: •when the size or configuration of the proposed GEOTECHNICAL SERVICES ARE stricture is altered: PERFORMED FOR SPECIFIC PURPOSES •when the location or orientation of the proposed AND PERSONS stricture is modified: •when there is a change of ownership. or Geotechnical engineers' reports are prepared to meet • for application to an adjacent site. the specific needs of specific individuals. A report pre- Geotechn :al engineers cannot accept responsibility for problems pared for a consulting civil engineer may not be ade- which maq develop if they are not consulted after factors consid- quate for a construction contractor, or even some other ered in th'ir report's development have changed. consulting civil engineer Unless indicated otherwise. this report was prepared expressly for the dient involved and expressly for purposes indicated by the dient. Use MOST GEOTECHNICAL "FINDINGS" by any other persons for any purpose. or by the dient ARE PROFESSIONAL ESTIMATES for a different purpose. may result in problems. No indi- vidual other than the client should apply this report for its Site exploration identifies actual subsurface conditions intended purpose without first conferring with the geotechnical only at i hose points where samples are taken. when engineer. No person should apply this report for any purpose they are taken. Data derived through sampling and sub- other than that originally contemplated without first conferring sequent laboratory testing are extrapolated by geo- with the geotechnical engineer I1 'r\ Earth Consultants Inc. \,I1 i J (Krurhnic�l I:nuinrrrs.(:c-r log sIs h I;nvluximrnral tic irrnVsrti December 8, 1997 E-3000-3 Zelman Development Company 707 Wilshire Boulevard, Suite 3036 Los Angeles, California 90017 Attention: Sanford Kopelow Dear Sanford: We are F leased to submit our report titled "Geotechnical Engineering Study, SW 43rd Street and Oak:;dale Avenue SW, Renton, Washington." This report presents the results of our field exploration, selective laboratory tests, and engineering analyses. The purpose and scope of our study was outlined in our October 7, 1997 proposal. Based on the results of our study, it is our opinion the site can be developed generally as planned. In our opinion, the proposed buildings can be supported on conventional spread and • continucus footing foundation systems bearing on at least two feet of structural fill following the successful completion of a preload program, or surcharge program in areas where minimal raising of site grades will be required. Slab-on-grade floors can be supported directly on the fills required to bring the site to grade. We appreciate this opportunity to have been of service to you. If you have any questions, or if we can be of further assistance, please call. Very truly yours, EARTH CONSULTANTS, INC. Kyle R. Campbell, P. E. ManagE r of Geotechnical Services KRClkrnl 1805- 136th Place N.E.,Suite 201,Bellevue,Washington 98005 Bellevue(425)643-3780 Seattle(206)464-1584 FAX(425)74-608-60 Tacoma(253)272-6608 TABLE OF CONTENTS E-3000-3 PAGE INTRODUCTION 1 General 1 Project Description 1 SITE CONDITIONS 1 Surface 1 Subsurface 2 G oundwater 2 Laboratory Testing 3 DISCUSSION AND RECOMMENDATIONS 3 General 3 Site Preparation and General Earthwork 4 Preload/Surcharge Program 5 Foundations 7 Retaining and Foundation Walls 8 Slab-on-Grade Floors 8 Seismic Design Considerations 9 Excavations and Slopes 10 Site Drainage 11 Pavement Areas 12 Utility Support and Backfill 13 LIMITA-IONS 13 A dditional Services 14 APPENDICES Append ix A Field Exploration Appenc ix B Laboratory Test Results ILLUSTRATIONS Plate 1 Vicinity Map Plate 2 Boring and Test Pit Location Plan Plate 3 Typical Settlement Marker Detail Plate 4 Typical Footing Subdrain Detail Plate 5 Utility Trench Backfill Plate Al Legend Plates A2 through A9 Boring Logs Plates A10 through A30 Test Pit Logs Plates A31 through A38 Previous Exploration Logs Plates B1 through B5 Sieve Analysis Plates B6 and B7 Atterberg Limits Earth Consultants, Inc. GEOTECHNICAL ENGINEERING STUDY SOUTHWEST 43RD STREET AND OAKSDALE AVENUE SW RENTON, WASHINGTON E-3000-3 INTRODUCTION General This report presents the results of the geotechnical engineering study completed by Earth Consultants, Inc. (ECI) for the proposed development on the northwest corner of the intersection between Southwest 43rd Street and Oaksdale Avenue Southwest in Renton, Washington. The general location of the site is shown on the Vicinity Map, Plate 1 . The purpose of this study was to explore the subsurface conditions at the site and based on the conditions encountered to develop geotechnical recommendations for the proposed site development. Project Description We understand the site is to be developed with several dock-high, tilt-up concrete warehouse buildings, with associated parking and driveway areas. These structures will range in size from approximately 7,000 to 170,000 square feet. The preliminary locations of the buildings are shown on Plate 2. We understand some raising of site grades will be required to achieve the dock-high floor elevations. At the time this report was written, design loads for the proposed structures were not available. However, based on our experience with similar structures, we anticipate wall loads will be in the range of three to five kips per lineal foot, and column loads will range between approximately seventy five (75) to one hundred twenty (120) kips. Floor loads for the warehouse and office areas will be in the range of three hundred fifty (350) and one hundred (100) pounds per square foot (psf), respectively. If any of the above design criteria are incorrect or change, we should be consulted to review the recommendations contained in this report. In any case, ECI should be retained to perform a general review of the final design. SITE CONDITIONS Surfac(, The subject property is approximately 48.0 acres in size, and is located northwest of the intersection of Oakesdale Avenue Southwest and Southwest 43rd Street in Renton, Washir gton (see Vicinity Map, Plate 1 ). The most significant topographic feature on the propery is Springbrook Creek which approximately bisects the property in a southwest to northeest direction. With the exception of the Springbrook Creek channel, the topography of the property is relatively flat. The elevation of the Springbrook Creek stream channel____ ran_ Qes between approximately eight to ten feet below the elevation of the surrounding site. Earth Consuttants. Inc. GEOTECHNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 December 8, 1997 Page 2 Several abandoned one- and two-story structures are present on the site. These structures were associated with the agricultural and industrial operations previously performed on the property. An automobile wrecking yard and associated warehouse are still in operation at the northeast portion of the site. Several stockpiles of automobile waste (auto fluff) are located at the no thwest corner of the site. Subsurfa �e The site was explored by drilling four borings and excavating 21 test pits at the approximate locations shown on Plate 2. In addition, we previously performed five borings and six test pits for a pre iminary geotechnical engineering study prepared for the site dated June 4, 1986. Please refer to the Boring and Test Pit Logs, Plates A2 through A38, for a more detailed description of the conditions encountered at each location explored. A description of the field exploration methods is included in Appendix A. The following is a generalized description of the subsurface conditions encountered. The borings and test pits generally encountered ten (10) to twenty (201 feet f_lnnse tcZ me rum ense, intath c ded s-ilt and silty-satui_Varying amounts of fill were encountered in the explorations. The upper compressible materials are generally underlain by medium dense to dense silt, silty sand and poorly graded sand with varying amounts of silt. Expansive soils were not encountered on the site. Groundwater Groundwater was observed in all four borings while drilling at depths of ten (10) to twelve and one-half (12 5) feet belovu the existing ground surface. Groundwater was encountered in test pits102, TP-108,SP-118 and TP-121 at depths ranging from eight (8) to fourteen (14) feet below existi des_ Groundwater conditions are not static; thus, one may expect fluctuations in groundwater conditions depending on the season, amount of rainfall, surface water runoff, and other factors. Generally, the water level is higher in the wetter winter months (typically October through May). Earth Consultants, Inc. GEOTECHNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 December 8, 1997 Page 3 Laboratc ry Testing Laboratory tests were conducted on several representative soil samples to verify or modify the field soil classification of the units encountered and to evaluate the general physical properties and engineering characteristics of the soils encountered. Visual classifications were supplemented by index tests, such as sieve analyses and Atterberg Limits on representative samples. Moisture contents were performed on all samples. The results of laboratory tests performed on specific samples are provided either at the appropriate sample depth on the individual boring log or on a separate data sheet contained in Appendix B. However, it is important to note that these test results may not accurately represent the overall in-situ soil conditions. Our geotechnical recommendations are based on our interpretation of these test results and their use in guiding our engineering judgement. Earth Consultants, Inc. (ECI) cannot be responsible for the interpretation of these data by others. DISCUSSION AND RECOMMENDATIONS General In our opinion, the proposed buildings can be supported on conventional spread footings with slab-oft grade floors after the successful completion of a preload and/or surcharge program. • A preload program involves placing the fill necessary to raise grades to the finish floor level and allowing the settlement induced by the fill to occur before construction of the building comme ices. A surcharge program involves placement of additional fill to elevations above the finish floor elevation and allowing settlement to occur. The purpose of the preload and surcharge programs is to reduce the amount of expected post-construction settlements from fill and static building loads. Based on the soil conditions and our experience with similar conditions, the estimated total post-construction settlements are in the range of one to one and ono-half inches, after successful completion of a preload and/or surcharge program. In general, for this project, a preload program can be used provided the finish floor elevation is a minimum of two feet above the existing grades. A surc_harge_p.Loa awl be necessary in areas were the existing grateit or less of the planned finish floor elevation. Specific surcharge recommendations for individual buildings can be made once building locations and finish floor elevations are available. Foundation elements should bear on a minimum of two feet of structural fill. Depending on grade modifications, this will require overexcavation of native soils. Slabs-on-grade sh_21.11s1 be supported on a minimum of one foot of imported granular structural fill, or one foot of cement treated on-site soil, or a combination thereof. �� Earth Consultants. Inc. GEOTECHNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 Decem )er 8, 1997 Page 4 We understand it is planned to utilize the on-site auto fluff as fill material after it is treated with ment. O4101-Remediation Services Corporation prepared a Draft Engineering Design Report dated August 1997 which provided site remediation recommendations. Included in this report are laboratory test results for unconfined compression strength tests performed on samples of the auto fluff mixed with various percentages of cement)'fhe report indicates the fluff will be_r fixed vvi h 7.5__percent cement for remediation purposes. Based on the unconf ned compressive strength test result n our opinion, the 7.5 percent cement/auto fluff mixturE would provide a material suitable for use as structural fill. Specific geotechnical recommendations for use of the treated auto fluff will be presented in a supplemental report. This report has been prepared for specific application to this project only and in a manner consistent with that level of care and skill ordinarily exercised by other members of the profess ion currently practicing under similar conditions in this area for the exclusive use of Zelman Development Company and their representatives. No warranty, expressed or implied, is made. This report, in its entirety, should be included in the project contract documents for the information of the contractor. Site Preparation and General Earthwork • The bu Iding and pavement areas should be stripped and cleared of surface vegetation, organic materiz l and other deleterious material. The root mat of the existing vegetation can be left in place: in fill real nrn mir ed-a minimum of two feet and-one and one-half feet of structural fill u derlie foundations andpavements, respectively. The vegetation should be removed. Following the clearing operations, the fill placement should commence. The ground surface where structural fill, or slabs are to be placed should be proofrolled. Proofrolling should be performed under the observation of a representative of ECI. Soil in loose or soft areas, if recompacted and still excessively yielding, should be overexcavated and replaced with structural fill or crushed rock to a depth that will provide a stable base beneath the general structural fill, or will provide suitable support for slabs. A geotextile fabric could also be used to aid in stabilizing the subgrade. • Structi:ral fill is defined as compacted fill placed under buildings, roadways, slabs, pavements, or other load-bearing areas. Structural fill under floor slabs and footings should be placed in horizontal lifts not exceeding twelve (12) inches in loose thickness and compacted to a minimum of 90 percent of its maximum dry density determined in accordance with ASTM Test Designation D-1557-78 (Modified Proctor). The fill materials should be placed at or near the optimum moisture content. Fill under pavements and walks should also be placed in horizontal lifts and compacted to 90 percent of maximum density except for the top twelve (12) inches which should be compacted to 95 percent of maximum density. Earth Consultants, Inc. GEOTECHNICAL ENGINEERING STUDY Zelman 'Development Company E-3000-3 December 8, 1997 Page 5 The existing site soils are moisture sensitive due to their relatively high fines content. As such, even after placement as structural fill, they will become disturbed from normal construction activity during or after periods of wet weather. Once disturbed, in a wet condition, they will be unsuitable for support of floor slabs and pavements. Therefore, the upper foot of subgrade should consist of a granular material suitable for use during wet weather or the upper foot of on-site fill soil could be cement treated. If the eztrthwork operations are conducted during the dry weather season as planned, it is our opinion that the on-site soils can be used as structural fill, including use as utility trench backfill, However, it must be emphasized that the native soils must be aerated in order to lower the moisture content to levels that will allow adequate compaction. Normal grading operations will provide some aeration; however, additional working of the soil will be necessary prior to or during grading in order to lower the moisture content to levels that will allow adequate compaction. If the o 1-site soil is exposed to moisture and cannot be adequately compacted then it may be necessary to use an imported free draining granular fill. Fill for this purpose and for use in wet weather should consist of a fairly well graded granular material having a maximum size of three it ches and no more than 5 percent fines passing the No. 200 sieve based on the minus 3/4-inci fraction. Samples of materials proposed for use as structural fill during wet weather should be provided to us for testing in order to determine the suitability of the materials. Preloac'/Surcharge Program We estimate settlements of two to four inches could occur from the placement of dock high fills ard buildings loads. In order to induce the majority of this settlement prior to construction, we recommend the use of a preload and/or surcharge program. We estimate the pre load/surcharge would remain in place for a time period of four to six weeks. A preload program consists of placing structural fill to the finish floor elevation and allowing consolidation of the compressible soil beneath the buildings to occur prior to constructing the buildings. As mentioned previously, surcharge fills should be placed above finish floor elevations in areas where building pad grades will be raised less than two feet above existing site grades. We anticipate surcharges would be approximately two feet in height. More detailed surcharge recommendations can be made when finish floor elevations for individual buildings have been established. In building areas where greater than two feet of fill is required to achieve finish floor elevations, a preload can be used. A surcharge program consists of placing structural fill to the finish floor elevation, and then placin 1 additional fill above the finish floor elevation as a surcharge, and allowing conso idation of the compressible soil beneath the buildings to occur prior to constructing the buildirgs. Based on the soil conditions and our experience with similar conditions, the estirm-ted total post-construction settlements are in the range of one to one and one-half inches., after successful completion of a preload and/or surcharge program. Earth Consultants, Inc GEOTECHNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 December 8, 1997 Page 6 The preload/surcharge fill should extend at least five feat h w:mi .xbe-building footprints. The side slopes of the fill should be sloped at a gradient of 1/±1 V or flatter If future expansion of any building is anticipated, the preload fill should extend at least twenty (20) feet in the direction of the future addition. The purpose of extending the surcharge is to reduce the possibility of settlement of the then-existing building from future building or surcharge loads. Because the purpose of the preload/surcharge is to induce settlement, it is necessary to monitor )oth the magnitude and rate of such settlement. S9 accQrnp1Lsh_thia,....s.ettlanaeat._. markers should be installed within the building pads. The number of settlement markers `placed will depend on the size of the building. As a general rule, one settlement marker should te pilaced for every 10,000 to 15,000 square feet of floor area. The settlement markers should be placed on the existing site subgrade before fill is placed. A typical settlement marker is depicted on Plate 3, Typical Settlement Marker Detail. Once installed, and while fill is being placed, the settlements caused by the filling operation should be recorded daily. For the first two weeks after the preload/surcharge fill is in place, readings should be acquired at two to three day intervals. Subsequently, readings may be obtained on a weekly basis, until either settlements cease, or the anticipated remaining settlements are within the previously specified settlement ranges. We should be retained to install the settlement markers and acquire the settlement readings. Should :he readings be made by another organization, the measurements must be provided to us in a timely manner to allow for interpretation of the data. This will help avoid any misinterpretation or misunderstanding regarding the success ofthe preload/surcharge program. The settlement markers must be kept intact during earthwork operations. In our experience, earthwork equipment (dozers and trucks) often destroy or damage markers. This adds to the project costs as the markers typically must be replaced and makes the settlement data obtained less reliable. In order to attempt to avoid this scenario, we recommend the project specifications include a requirement that the earthwork contractor is required to immediately replace any damaged settlement markers and have the settlement readings re-obtained at his own cost. This requirement makes the earthwork contractor more conscious of the importE nce of the preload/surcharge program and will aid in maintaining the integrity of the monitoing program. Fill for landscaping purposes should not be placed near the building since additional fill could induce further settlements after the building is constructed. If such fill is planned, the preload fill should be extended to five feet beyond the planned landscape fill, or a lightweight fill should be used. Earth Consultants. Inc. GEOTECHNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 December 8, 1997 Page 7 Foundations In our opinion, the proposed buildings can be supported on conventional spread and continuous footing foundations bearing on a minimum of two feet of stwctural fill after successful completionthe preload an�Tc/or surcharge_program., Depending_on grades it may e necessary to overexcavate the existing soil in,order to provide the two feet of st intural fill. If extremely soft soil is exposed in the foundation excavations, it may be necessary to extend the excavation to provide additional structural fill beneath foundations. Exterior footing should be bottomed at a minimum depth of eighteen (18) inches below the lowest outside grades. Interior footings may be bottomed at a depth of twelve (12) inches below th13 top of the slab. Footings may be designed for an allowable bearing capacity of two thousanc five hundred(2,500) pounds per square foot (psf). Loading of this magnitude would be provided with theoretical factor-of-safety in excess of three against actual shear failure. For short-term dynamic loading conditions, a one-third increase in the above allowable bearing capacities can be used. Continuous and individual spread footing should have minimum widths of eighteen (18) and twenty-four (24) inches, respectively. Lateral loads due to wind or seismic forces may be resisted by friction between the foundations and the supporting subgrade or by passive earth pressure on the buried portions of the foundations. For the latter, the foundations must be poured "neat" against the existing soil or backfilled with compacted fill meeting the requirements of structural fill. A coefficient of friction of 0.4 may be used between the foundation elements and the supporting subgrade. The passive resistance of native soil or structural fill may be assumed to be equal to the pressure exerted by a fluid having a unit weight of three hundred (300) pounds per cubic foot (pcf). These lateral resistance values are allowable values, a factor-of-safety of 1 .5 has been included. As movement of the foundation element is required to mobilize full passive resistance, the passive resistance should be neglected if such movement is not acceptable. With structural loading as expected, total settlement in the range of one and�ne att-+des is anticipated with differential movement of about one inch. Most of the anticipated settlements should occur during construction as the dead loads are applied. Footing excavations should be observed by a representative of ECI, prior to placing forms or rebar, to verify that conditions are as anticipated in this report. Earth Consultants, Inc. GEOTECI- NICAL ENGINEERING STUDY Zelman Development Company E-3000-3 December 8, 1997 Page 8 Retaining and Foundation Walls Retaining and foundation walls should be designed to resist lateral earth pressures imposed by the retained soils. Walls that are designed to yield can be designed to resist the lateral earth pressures imposed by an equivalent fluid with a unit weight of thirty-five (35) pcf. For walls that are restrained from free movement the equivalent fluid weight should be increased to fifty (50) pcf. These values are based on horizontal backfill and that surcharges due to backfill slopes, hydrostatic pressures, traffic, structural loads or other surcharge loads will not act on the wall. If such surcharges are to apply, they should be added to the above design lateral pressure. Calculation of lateral resistance should be based on the passive pressure and coefficie it of friction design parameters given in the previous foundation section. If it is desired to include the effects of seismic loading in the design, a rectangular pressure distribution equal to six times the wall height should be added to the above lateral earth pressure values. Retaining walls should be backfilled with a free-draining material conforming to the WSDOT specification for gravel backfill for walls (WSDOT 9-03.12(2)). The free-draining material should extend at least eighteen (18) inches behind the wall. The remainder of the backfill should consist of structural fill. A perforated drain pipe should be placed at the base of the wall. Drain pipes should be surrounded by a free-draining soil that functions as a filter in order to reduce the potential for clogging. Drain pipes located in the free-draining backfill soil should be perforated with holes less than one-quarter inch in diameter. The drain pipe should be surrounded by a minimum of one cubic foot per lineal foot with three-eighths inch pea gravel. Alternatively, retaining wall drainage systems such as Miradrain'could be used. If any such product is used, it should be installed in accordance with the manufacturer's specifications. Slab-on-Grade Floors Slabs-ol-grade should be supported on a minimum of one foot of imported granular structural fill, or c ne foot of cement treated on-site soil, or a combination thereof. Cement treatment of the subgrade, if used, should consist of mixing a minimum of 8 percent cement by weight into the upper twelve inches of subgrade soil. Slab-on-grade floors supported on a minimum of one foot of imported granular structural_filI, or one foot of cement treated on-site soil, or a combination thereof maybe designed for a mo-Lls of soil subgrade reaction of three hundred fifty (350) pounds per cubic inch (pci). Earth Consuhanti. Inc. GEOTECIINICAL ENGINEERING STUDY Zelman Cevelopment Company E-3000-3 December 8, 1997 Page 9 Concrete slabs resting on soil ultimately may cause the moisture content of the underlying soils to rise. This results from continued capillary rise and the ending of normal evapotranspiration. As concrete is perrne.able, moisture will eventually penetrate the slab resulting in a condition commonly known as a "wet slab", and poor adhesion of floor coverings may result. In our experience, these conditions rarely occur in dock-high, open air warehouses, except in areas were floor coverings are used. To minimize the potential for a wet slab, in areas where floor_coverin_gs will be used, suitable moisture protection measure should be used. Typically, such protection measures include pTacemer5f of a vapor barrier and a capillary break. A capillary break, if used, should consist of a minimum of four inches of clean sand or washed rock. Samples of materials proposed for use as a capillary break should be submitted to us for review and/or testing prior to their use. Seismic Design Considerations The Puget Lowland is classified as a Seismic Zone 3 by the Uniform Building Code (UBC). The largest earthquakes in the Puget Lowland are widespread and have been subcrustal events, ranging in depth from thirty (30) to fifty-five (55) miles. Such deep events have exhibited no surface faulting. Structures are subject to damage from earthquakes due to direct or indirect action. Direct action is represented by shaking. Indirect action is represented by movement of the soil support ng foundations and is typified by ground failure (rupture), liquefaction, or slope failure. Liquefaction is a phenomenon in which soils lose all shear strength for short periods of time during yin earthquake. The effects of liquefaction may be large total and/or differential settlement for structures with foundations founded in the liquefying soils. Groundshaking of sufficient duration results in the loss of grain to grain contact and rapid increase in pore water pressur:, causing the soil to behave as a fluid for short periods of time. To have a potential for liquefaction, a soil must be cohesionless with a grain size distribution of a specified range (genera ly sands and silt); it must be loose to medium dense; it must be below the groundwater table; and it must be subject to sufficient magnitude and duration of ground: haking. Earth Consultants, Inc. GEOTE(:;HNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 Decernt er 8, 1997 Page 10 Based on the information obtain from our borings, the loose soils encountered during our field explora':ion consist of interbedded silts and silty sands. Given this information, it is our opinion that the potential for widespread liquefaction over the site during a seismic event is low. Isolated areas may be subject to liquefaction; however, the effect on structures is anticipated to be minimal if the recommendations contained in this report are followed. Should iquefaction occur, the liquefying zones would be several feet below the footings of the buildings. We estimate liquefaction induced settlement would be in the range of two inches, which is slightly higher than the estimated post construction settlements (1 .5 inches) discussed earlier. The UEC Earthquake regulations contain a static force procedure and a dynamic force procedure for design base shear calculations. Based on the encountered soil conditions, in our opinion a site coefficient of S3 = 1.5 should be used for the static force procedure as outlined in Section 1634 of the 1994 UBC. For the dynamic force procedure outlined in Section 1629 of the 1994 UBC, the curve for Soft to Medium Clays and Sands (soil type 3) should be used for Figure 3, Normalized Response Spectra Shapes. Excavations and Slopes • The following information is provided solely as a service to our client. Under no circumstances should this information be interpreted to mean that ECI is assuming responsibility for construction site safety or the contractor's activities; such responsibility is not being implied and should not be inferred. In no case should excavation slopes be greater than the limits specified in local, state and federal safety regulations. Based on the information obtained from our field exploration and laboratory testing, the soils expected to be exposed in excavations can be classified Type C as described in the current Occupational Safety and Health Administration (OSHA) regulations. Therefore, temporary cuts greater than four feet in height should be sloped at an inclination no steeper than 1 .5H:1V or they should be shored. Shoring will help protect against slope or excavation collapse, and will provide protection to workmen in the excavation. If tempo'ary shoring is required, we will be available to provide shoring design criteria, if requested. If slopes of this inclination, or flatter, cannot be constructed, temporary shoring may be necessary. Shoring will help protect against slope or excavation collapse, and will provide protection to workers in the excavation. If temporary shoring is required, we will be available to provide shoring design criteria. Earth Consultants, Inc. GEOTECF-INICAL ENGINEERING STUDY Zelman Development Company E-3000-3 Decembe 8, 1997 Page 11 Permanent cut and fill slopes should be inclined no steeper than 2H:1V. Cut slopes should be observed by ECI during excavation to verify that conditions are as anticipated. Supplementary recommendations can then be developed, if needed, to improve stability, including flattening of slopes or installation of surface or subsurface drains. In any case, water should not be allowed to flow uncontrolled over the top of any slopes. All permanently- exposed slopes should be seeded with an appropriate species of vegetation to reduce erosion and impr:we stability of the surficial layer of soil. Site Draiage The site must be graded such that surface water is directed off the site. Water must not be allowed to stand in any area where buildings, slabs or pavements are to be constructed. During construction, loose surfaces should be sealed at night by compacting the surface to reduce tie potential for moisture infiltration into the soils. Final site grades must allow for drainage away from the building foundations. We suggest that the ground be sloped at a gradient of 3_ eL ant for a distance of at least ten 110) feet away from the buildings,_except in areas that are to be paved which can be_ ,1ip_ed at a_gradLea _2 percent.^_. If seepage is encountered in foundation or grade beam excavations during construction, the bottom of the excavation should be sloped to one or more shallow sump pits. The collected water can then be pumped from these pits to a positive and permanent discharge, such as a nearby storm drain. Depending on the magnitude of such seepage, it may also be necessary to interconnect the sump pits by a system of connector trenches. .poundal ion drains should be installed where landscaped areas are immediately adjacent to non dock-hi( h portions the buildin4. In our opinion, foundation drains are not necessary in areas where pavements extend to the building walls. The drains should be installed at or just below the bottor0 of the footing, with a gradient sufficient to initiate flow. A typical detail is provided on Plate 4. Under ro circumstances should roof downspout drain lines be connected to the foundation drain system. Roof downspouts must be separately tightlined to discharge. Cleanouts should be instz lied at strategic locations to allow for periodic maintenance of the foundation drain and downspout tightline systems. Earth Consultants, Inc. GEOTECHNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 December 8, 1997 Page 12 Pavement Areas The adequacy of site pavements is related in part to the condition of the underlying subgrade. To provide a properly prepared subgrade for pavements, the subgrade should be treated and prepared as described in the Site Preparation and General Earthwork section of this report. At a minimum, the top twelve (12) inches of the subgrade should consist of imported granular str—"u al fill suitable for use rin wet weather conditions com acted to 95 percent of the maximum ry ensity (per ASTM D-1557- . It is possible that some localized areas of soft, wet or�.jnstable subgrade may still exist after this process. Therefore, a greater thickness of structui al fill or crushed rock may be needed to stabilize these localized areas. As an alternative to placement of a minimum of one foot of imported granular structural fill, conside ration could be given to cement treating the subgrade soil. Specific recommendations for cement treatment can be provided upon request. The fol owing pavement sections are suggested for lightly-loaded areas: 40 Two inches of asphalt concrete (AC) over four inches of crushed rock base (CRB) material, or 4. Two inches of AC over three inches of asphalt treated base (ATB) material. Heavie truck-traffic areas will require thicker sections depending upon site usage, pavement life anc site traffic. As a general rule the following sections can be considered for truck- trafficked areas: • Three inches AC over six inches of CRB • Three inches of AC over four and one half inches of ATB Asphalt concrete (AC), asphalt treated base (ATB), and crushed rock base (CRB) materials should conform to WSDOT specifications. Rock base should be compacted to at least 95 percent of the ASTM D-1557-78 laboratory test standard. We suggest the use of Class B asphalt. Earth Consultants. Inc. GEOTECN NICAL ENGINEERING STUDY Zelman D welopment Company E-3000-3 Decembe' 8, 1997 Page 13 Utility Support and Backfill The site soils should provide adequate support for utilities located above_ the gr2 indwater table. The soil that is located below the groundwater table may not provide adequate support i t eir present condition. The inability of soils located below the groundwater table to adequately support utilities would result from both the loose condition of the soil and the effect of the groundwater table de-stabilizing the trench bottom as the trench is excavated. Thus, if utilities will be located below the groundwater table, remedial measures will likely be required in order to provide adequate support. Remedial measures could include dewatering the trench, using steel sheeting to create a barrier of flow to the groundwater or placement of quarry spalls in the bottom of the trench as it is excavated. Use of a geotextile to provide separation between the native soils and quarry spoils may also be necessary if heaving soils are encountered. Utility trench backfill is a primary concern in reducing the potential for settlement along utility alignments, particularly in pavement areas. It is important that each section of utility line be adequately supported in the bedding material. The material should be hand tamped to ensure support is provided around the pipe haunches. Fill should be carefully placed and hand tamped to about twelve inches above the crown of the pipe before any heavy compaction equipmE nt is brought into use. The remainder of the trench backfill should be placed in lifts having 2 loose thickness of less than twelve (12) inches. A typical trench backfill section and compaction requirements for load supporting and non-load supporting areas is presented on Plate 5. Trench backfill beneath building, parking and roadway areas may consist of native soils or imported materials provided they are near optimum moisture content as determined by our field representative. Based on current conditions, the majority of the on-site soil would require aeration to reduce the moisture content to near the optimum to allow compaction. During wet weathe°, a granular fill, as described earlier, should be used. LIMITATIONS Our recommendations and conclusions are based on the site materials observed, selective laboratory testing and engineering analyses, the design information provided to us by you, and our exjerience and engineering judgement. The conclusions and recommendations are profess ional opinions derived in a manner consistent with that level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in this arEa. No warranty is expressed or implied. Earth Consuttants, Inc. GEOTECHNICAL ENGINEERING STUDY Zelman Development Company E-3000-3 December 8, 1997 Page 14 The recommendations submitted in this report are based upon the data obtained from the test pits. Soil and groundwater conditions between test pits may vary from those encountered. The nature and extent of variations between our exploratory locations may not become evident until construction. If variations do appear, ECI should be requested to reevaluate the recommendations of this report and to modify or verify them in writing prior to proceeding with the construction. Additional Services As the !jeotechnical engineer of record, ECI should be retained to perform a general review of the final design and specifications to verify that the earthwork and foundation recommendations have been properly interpreted and implemented in the design and in the construction specifications. ECI should also be retained to provide geotechnical services during construction. This is to observE compliance with the design concepts, specifications or recommendations and to allow design s;hanges in the event subsurface conditions differ from those anticipated prior to the start of construction. We do not accept responsibility for the performance of the foundation or earth work unless we are retained to review the construction drawings and specifications, and to !:)rovide construction observation and testing services. Earth Consuhsnts. Inc. //tVi�r;./,:: "r` 1v'�3-1 \ i ltj5T 11[i�al I 1 I ,.. ,,:XX‘, .;�,.. va.. - l 4 1 , I Tracy l ♦ fty_rr £:h,.t' `+a'* �.f t�Ns _ h . \\- -. • I' - - r •.. , t ,�1 .It : ...,.... 1 r l • s ` Q ! ' 1• • .,7. +l l-y ^t1• c_ --_-Jt f. LLrrN ..` N.: . ���` ▪ i TR"tCkDt, ft1 ''' t ,. . _1_^.yr•o ` , 'i• y t ri. r .1 T�A E1 SCh' ti l Suv T!S t sr„. . 1. f !; ,..},Naar,, +�, . NiVIRp . di N • f C U. t C A I ! 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T - 1... .4?� ".:;%:-' Scale �, moan :f�r- .:; 12`y 0 Approximate t ; :ia:,'::..t? i s -' t-,4- - - n LEGEND f :> ` 5 ::�;::.. ;� ,..,r- Approximate Location :3 :::�• �:. µ`� � ,-.�-, o �' :�•:::� f ECI Bon � ��-.�:.::�:;;;' ,. Proj. No. ;, >; w . r1; 1997 ,,. :i �� E-3000-3, Oct: ��:z+'yr 9v�:•����'�• 1 (.4 - TP 101-a-Approximate Location of ECI Test Pit, Proj. No. E-3000-3, Oct. 1997 : —a— • TP-116 ' G-101 A Approximate Location of ECI Grab Sample, Proj. No. E-3000-3, Oct. 1997 -. B-1 -0- Approximate Location of ECI Boring, Proj. No. 1 _ ' TP-115 E-3000, May 1986 o----D TP 1 -o- Approximate Location of �� '- ECI Test Pit, Proj. No.r. -- J`' E-3000, May 1986 i----, r / `J Auto Fluff/ �� .-_ Area S >: t-.:: Wire Fluff Area /, n L� Proposed Building -J Existing Building i Boring and Test Pit Location Plan Zelman Property Parcels A, B and C i. Renton, Washington pecked RAC Date 10/30/97 1 Plate 2 I SCHEMATIC ONLY - NOT TO SCALE NOT A CONSTRUCTION DRAWING rnV�!• O f .h :}}Y.Cv: n.�. •�ha.: r .3n v.%:ti.��<k:..n:�.....:a'h :::..:............................ nK .A,n•::....:nv R. a.:�. a. +4. 'S a L. -+q�'• 1. ..�.� ,< •::{•i}i:{};i}: ' Yi:::.:}'^:<.}}}}}i:�i:^i:4}:4}i: i:i4}i::^ kt�• �n.t,ty::'f: ::.Jfi•:}�- I.vY {>J:%r n�•4.Y.. 3:..�::::% :i:}f:�2+:?: :i?Y:3'4i::?{:?:i:}v '«.:fi:{:,.}.}' '<{Y;}; :'rs"r4{..'" : �><i.::;K:.::.}:: ,�:.:::: . <; Surcharge or Preload w:'3:•�'iw{.}:4::t `•-+irm `::>:.::: {Sly<^{i?.riv-}fv:}:}:..:�.n:,.:i}}"C%>}:::<[::: Surcha rge or Preload :YJ{:r,i �,} f,r :4- ::IX•:. •2:•;r:i4}}:-i::C:•}:{;{. 9 f .,ans,,;;. ."�;,'.':".�.. 3'.v: w <:::>• ,�tcMr:<$: ;,;>�<:;<:c><,:<,�:> }»:}:}.}i}i},}2f>;i}' �::::; {:>{:<:}'�.}:..}:{ � �.:.t•3. <<:<2::">>{:; :»;:»<:::., Fill Fill {< :{t:: :°' .a3' 2�t} :.}:, :.�...r{ ?.:w.}.......... : s:?.3--:.}:,•.:r..{-.o •.3} '•.: --> ,.. .-n r}: :'k::::x:::u;i✓:{{::£{::A:p.:.;:2:<::::::::i.% ':::i:::::: :; $;.`�-"4:vn;v{;.}�.,{,I}}.i}:44 �,i�i}i..n.:F.x%<r'�...�}<t:34.�i{::}-::i: ::i):<}' 'v:h?\:{.. l-}i{ .4{ki-}:�%:'.y�L: }: i'!\ 'ii:v �... ,.,.4vJ-F...v..tr.v-:..y".r}}'-iY:F :<::Fv i::::::vM:::v� ::: -. : :2%} ::$Yi;.:u i:::r<-:'<ttt<cr.,-.a:'�? a ..a •:::;5:`:::}:::Sfi<`::%::::i�::::%:d-. :{«.{:.:.:`2::...: ::fit;: �.{?:.::::'rv. .}::....<. ;.`�;pri vv v:A • 3 ;;'r:;:`:;:'�`:`::?::;:;:'j2:`:ice;:; ;::t;%'::%:%;!. 111=1►1=111: ' -La r 111=111=111=- STANDARD NOTES , 1) Base consists of 3/4 inch thick, 2 foot by 2 foot plywood with center drilled 5/8 inch diameter hole. 2) Bedding material, if required, should consist of Traction Sand. 3) Marker rod is 1/2 inch diameter steel rod threaded at both ends. 4) Marker rod is attached to base by nut and washer on each side of base. 5) Protective sleeve surrounding marker rod should consist of 2 inch diameter plastic tubing. Sleeve is NOT attached to rod or base. 6) Additional sections of steel rod can be connected with threaded couplings. 7) Additional sections of plastic sleeve can be connected with press-fit plastic couplings. 8) Steel marker rod should extend at least 6 inches above top of plastic sleeve. 9) Marker should extend at least 2 feet above top of fill surface. ,i? »: /11 TYPICAL SETTLEMENT MARKER DETAIL tei,� arth Consultants Inc. Zelman Property Parcels A, B and C 'IU/N/ ,d) G,...IL F, .Fr.Mormxn}lI SCWwK6 Renton, Washington Proj. No 3000-3 I Drwn. GLS bate Oct. '97 (Checked RAC Date 10/30/97 I j Plate 3 r.....--.---------....—•••••---------------------------...........--, • O _..--_ Slope To Drain '4• _. O ♦V •' L f 5 t •o .C . 6 inch min. ..: '` « 4 y � -t . "yam ':L. } o o a :•o,• •�•q• •• ;• .o.'° :�• 18 inch min. •• ••• • •• •,.- •• ••.• ••;.•- ▪ •,•• • �O .•' 0 ,: :i..••'...-.••f• o • p 4 inch min. =�- Diameter Perforated Pipe '•-•" • • '' • • . . Wr1.pped in Drainage ••-•'• •• 0.•.o •0 a . Fabric •:. . _ f t } 2 inch min. 2 inch min. / 4 inch max. 1.- 12 inch min. SCHEMATIC ONLY - NOT TO SCALE ' NOT A CONSTRUCTION DRAWING LEGEND ;,.;: <'' Surface seal; native soil or other low permeability material. Fine aggregate for Portland Cement Concrete; Section 9-03.1(2) of the a_ WSDOT Specifications. • O Drain pipe; perforated or slotted rigid PVC pipe laid with perforations or slots facing down;tight jointed; with a positive gradient. Do not use flexible corrugated plastic pipe. Do not tie building downspout drains into footing lines. Wrap with Mirafi 140 Filter Fabric or equivalent. ,# a" TYPICAL FOOTING SUBDRAIN DETAIL R■■�.■� ( �y Earth Consultants Inc. Zelman Property Parcels A, B and C gyp`% ' N\.r/ yp(:fy,Geologies A F1H1fofYMad 5[1mfWS RentonACbate , Washington Proj. No. 3000-3 Drwn• GLS Date Oct. '97 Checked FI 10/30/97 Plate 4 1--- Non-Load Supporting Floor Slab or Areas Roadway Areas 1' .. l , , ' `° •o ° •�• o Varies 0 G• o 0 95 1 Foot Minimum 4 Backfill 1 , rJ ^ f _ Varies A o°.Oo .t.4 PIPE .o:000:Q A,c a ��Do- ;„. d . •.oeQ.• ..: ;oa.o .o. b••o .:• Bedding 00•�• :.a o.• °.0 Varies O.•..o .. o..O•o 0'0.�_�0 •�°p0° o• 97 00 a�o..p.•o• v LEGEND: •''_* .:s --�:. Asphalt or Concrete Pavement or Concrete Floor Slab y ., 0• . a°••, • 0 • ••0 . Base Material or Base Rock ,y.:;,:.• ,..;; Backfill; Compacted On-Site Soil or Imported Select Fill . +: ;: Material as Described in the Site Preparation of the General Earthwork Section of the Attached Report Text. 95 Minimum Percentage of Maximum Laboratory Dry Density as Determined by ASTM Test Method D 1557-78 (Modified Proctor), Unless Otherwise Specified in the Attached Report Text. Bedding Material; Material Type Depends on Type of Pipe and to )e•a� _., Recommendations ndations oerdtae Lavino Conditions. g Type oofdPCpenform Se ectedhe Manufacturers /OP44% TYPICAL UTILITY TRENCH FILL Niel E-h` Earth Consultants Inc. \�Il� 'n`, � Zelman Property Parcels A, B and C \1U n ter..dpnerTs cc ologlsu a Fm�cx.. wi snrT.r..es Renton, Washington Proj. NI).3000-3 I Drwn. GLS IDate Oct. '97 Checked RAC Date 10/30/97 I Plate 5 APPENDIX A FIELD EXPLORATION E-3000-3 Our field exploration was performed on October 20 and 23, 1997. Subsurface conditions at the site were explored by drilling four borings and 21 test pits. The borings were drilled by Associated Drilling and the test pits were excavated by Northwest Excavating, using a track- mounted excavator. Approximate exploration locations were determined relative to existing landmarks. Approximate locations should be considered accurate only to the degree implied by the method used. These approximate locations are shown on the Boring and Test Pit Location Plan, Plkite 2. The locations of borings and test pits performed in 1986 are also shown on Plate 2. The field exploration was continuously monitored by an individual from our firm who classified the soil$ encountered and maintained a log of each test pit, obtained representative samples, measured groundwater levels, and observed pertinent site features. All sam;ales were visually classified in accordance with the Unified Soil Classification System which i:3 presented on Plate Al, Legend. Logs of the borings and test pits are presented in the Appendix on Plates A2 through A38. The final logs represent our interpretations of the field logs and the results of the laboratory examination and tests of field samples. The stratification lines on the logs represent the approx mate boundaries between soil types. In actuality, the transitions may be more gradual. Representative soil samples were placed in closed containers arid returned to our laboratory for furl her examination and testing. Earth Consuttanta, Inc. Boring Log Project Name: I Zelman Property Parcels A, B and CSheet of 1 2 Job No. Logged by: Start Date: Completion Date: Boring No.: _ 3000-3 RAC 10/23/97 10 23/97 B-1 Drilling Contactor: Drilling Method: Sampling Method: Associated HSA SPT Ground Surface Elevation: Hole Completion: ±24' ElMonitoring Well ❑ Piezometer ® Abandoned,sealed with bentonite - No. o• .c . y 7,• Surface Conditions: W Blows aE a + a C.) LI ( ) Ft. t a o u- E 0 a % V, " N N ������• SM (Topsoil to 4") .���.�� FILL:Gray silty fine SAND, loose, wet, considerable wood, plastic, 0i�i�i. 1 glass debris, some slag 4���� • •�ot •4 3 7.4 59 �� .. 41F•�! -through debris at 3.5'to 4.0' SM Brown silty fine to medium SAND with gravel;medium dense,wet 5 LL=35 PL=2• PI-6 129 18 -6"coarse sand lense 6 a 7 ML Gray SILT, loose, saturated 8 40.0 5 9 10 - -increasing sand and sandy silt.very lose, groundwater table 39.7 2 encountered 11 12 26.1 8 +' 13 rSP-SM Blaci poorly graded fine to medium SAND,loose,water bearing :;.. 14 > 15 —' -increasing silt, some silty sand 11.o 11 `'`. a 16 e . • 17 a . 18 0 r c . � 19 N v o 1. 4,11. Boring Log (leksi. Lai � �F/� Earth Consultants Inc. Zelman Property Parcels A, B and C W)1 C u°'°u"'`�'t «�"°'°�'e`�„'`°`m'Y''sd`"°'d Renton,Washington Proj.No. 3000-3 Own. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A2 ea Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretati.m by others of information presented on this log. Boring Log Project Name: Sheet of Zelmall Property Parcels A, B and C 2 2 Job No. Logged by Start Date: Completion Date: Boring No.: 3000-3 RAC 10123/97 10/23/97 B-1 Drilling Cc ntacfor. Drilling Method: Sampling Method: Associated HSA SPT Ground Surface Elevation: Hole Completion: ±24' _ ❑ Monitoring Well ❑ Piezometer ® Abandoned,sealed with bentonite U — — W No. o — N o BLOWS a E E N E i%) Ft. " 3 ° ` w a CI N V) 0 ML Gray SILT, loose, saturated 55.3 10 '' `' PT PEAT layer and organic silt ML Gray SILT, loose, saturated 22 23 ASP-SSA Black poorly graded fine to medium SAND, loose to medium dense, 0- water bearing 24 v. 25 — -10%fines 25.0 12 "a o. ; . 26 • 27 - ' 28 Ii::A. 2g — 30 MH Brown elastic SILT and organic silt, soft, saturated, Interbedded 58.6 4 organic fragments 31 • Boring terminated at 31.5 feet below existing grade. Groundwater table encountered at 10.0 feet during drilling. Boring backfilled with cuttings and bentonite. r o- 1, 41IVBoring Log ai Earth Consultants Inc. Zelman Property Parcels A, B and C (TA G� (iFF/ Washington Gc,.a.a-ara,mreas.csoto�s`g* scxna+ra Renton, Washin Proj.No. ;3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A3 m Subsurface renditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation by others of information presented on this log. Boring Log I Project Name: Sheet of Zelman I'roperty Parcels A, B and C 1 2 Job No. Logged by: Start Date: Completion Date: Boring No.: 3000-3 RAC 10/23/97 - 10/23/97 B-2 Drilling Contactor: Drilling Method: Sampling Method: Associated HSA SPT Ground Surf.ice Elevation: Hole Completion: ±23' ❑ Monitoring Well ❑ Piezometer ® Abandoned,sealed with bentonite U — o t ! ti — o Surface Conditions: WNo • Blows a E 4 f E N E (%) pt. ? A 7 ] (I V) V) V7 ♦♦♦*♦ SM FILL:Brown silty SAND with gravel, loose, moist •• -contains organics •••• I -becomes gray, no apparent organics ii♦i• • i♦i♦i♦ A•n• 13.3 19 %%% 3 SM FILL:Brown to black silty SAND, medium dense, moist ♦♦♦♦♦♦ -contains organic debris ���� 4 -copper wire iii♦ • 34.4 10 • • • •♦ ♦♦♦♦♦♦ 7 ♦♦♦♦ • 10 %% 8 -no recovery •��� -cuttings same as at 5' ♦•♦:♦ 9 LL=37 PL=31 ♦♦♦♦♦♦ 10 A♦. PI=6 43.5 6 11 ML Gray SILT,loose, saturated (native) -contains organics 12 41.5 5 13 -trace sand 14 15 -becomes very loose 44.3 2 -contains peat interbeds 16 17 18 r a- 19 k', 44111. Boring Log e 0/10 Earth Consultants Inc. Zelman Pro a Parcels A, B and C (Tr, b, 1, p �, Geoie°�'"'` ""'OCO'Om'"`�"`1Of�"'' Renton, Washington r, J Proj. No. 30(0-3 own. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A4 m Subsurface con fitions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and juc gment They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation b' others of information presented on this log. Boring Log Project Nar ie: Sheet of Zelman Property Parcels A, B and C 2 2 Job No. Logged by: Start Date: Completion Date: Boring No.: 3000-3 RAC 10/23/97 10/23/97 B-2 Drilling Cor tactor: Drilling Method: Sampling Method: Associated HSA SPT Ground Sw"ace Elevation: Hole Completion: ±23' ❑ Monitoring Well ❑ Piezometer ® Abandoned,sealed with bentonite U — e — No. L o aL.., • — N O W Blows aE a } N E (%) Ft L a Oe 'L D ? O N N N ML Gray SILT, loose, saturated 64.4 8 `� ' — PT Layer of PEAT and organic silt SM Gray silty SAND, medium dense, saturated 23 _:. 24 _, 25 29.9 16 26 - Boring terminated at 26.5 feet below existing grade. Groundwater table encountered at 10.0 feet during drilling. Boring backfilled with . cuttings and bentonite. • c w ,��. Boring Log (ni ( �' Earth Consultants Inc. Zelman Property Parcels A, B and C m 11 e I t Geosec""o' "a'.``°`ogtots`@'v+ron."""'`s°en"kot' Renton,Washington r7 Proj.No. 3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A5 a Subsurface a nditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation )y others of information presented on this log. Boring Log Project Narie: Sheet of Zelman Property Parcels A, B and C 1 2 Job►o. Logged by: Start Date: Completion Date: Boring No.: 3000-3 RAC 10/23/97 10/23/97 B-3 Drilling Cor tactor: Drilling Method: Sampling Method: Associz ted HSA _ SPT Ground Swface Elevation: Hole Completion: ±24' ❑ Monitoring Well ❑ Piezometer ® Abandoned,sealed with bentonite u _ No. — o L y a Surface Conditions: W BIOWS a. E a 4' E N E (%) Ft a e `` ° a N N x SM (4"Topsoil) FILL: Brown silty SAND with gravel, loose, moist 2 ML Mottled brown and gray SILT, medium dense, moist -trace fine sands 33.3 1 i 3 -contains small roots 4 5 35.3 7 -becomes loose 6 7 8 F SM Mottled brown and gray silty fine SAND, medium dense, moist 16.3 16 • ', 9 10 15.6 13 11 • 12 Q - SM Gray silty fine SAND, loose, saturated 30.8 6 13 -increase in silt content -30%fines 14 15 - -contains large (4") pieces of wood 44.7 10 -becomes medium dense 16 17 18 r 19 'ay -��►>!• Boring Log ;� 0 11 Earth Consultants Inc. Zelman Property Parcels A. B and C i �`°'°� "�'metethea"°'°ire"°@""°'"""'°''Scientists Renton, Washington a Prof.No. 3000-3 Down. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A6 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and ju igment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation t y others of information presented on this log. Boring Log Project Na m: Sheet of Zelmar Prope Parcels A. B and C 2 2 Job No. Logged by: Start Date: ComplknDate: Boring No.: 3 00Q RAC 10/23/97 10/23/97 B-3 DriAgCamctoe Drilling Method: Sampling Method: Associated HSA _ SPT Ground Su faceo_am: Hole Completion: ±24' ❑ Monitoring Well ❑ Piezometer al Abandoned,seale d with bent b ° -No. o { •. ® 8OWS. Q C 0 E { }% Ft 13 6 - . D , 0 VI V) 0 2 PG§ Black poo�graded SAND withsk medium den e, sacra ed /\ -sand is finemediumm to gbed ma a 6: . 21 r° ` Gt £ K y — ( \ 2 — \ -contains bmep@c of wood 45 8 14 ... ¥ . & Q ' i 27 — • : ` . 2 / , ƒ / 29 — ±, : mo recovery 1 J ¥ $ I • y • Boring terminated at 31.5 feet below existing grade. Groundwater table encountered at12 5 feet during g drilling. onn backfilled with cuttings and bentonite. 0- , ti . V Boring Log ■ Earth Consultants Inc. ZlmaPmpe PacBA, BadC § a _ ���� �� . Renton, Washington n -J Proj.No. 3000-3 own. GLS Date Nov. '9 Checked RAC Date 11/3/97 Rate A Subsurface conditions&depicted sent our observations attti_�dl�knof b,epemo>nl�mod.dby engineering tests, analysis idg_k Th are not necessarily mR_n _ofotrtimes and aGkn.w annota�Mresponsibility t the use or interpretation�others of information pre sented on this log. Boring Log Project Na ne: Sheet of Zelmar Property Parcels A, B and C 1 2 Job No. Logged by. Start Date: Completion Date: Boring No.: 3000-3 RAC 10/23/97 10/23/97 B-4 Drilling Co itactor: Drilling Method: Sampling Method: Associated HSA SPT Ground Su lace Elevation: Hole Completion: ±24' ❑ Monitoring Well ❑ Piezometer ® Abandoned,sealed with bentonite u _ _ No. . o .c ti Surface Conditions: Blows a E a +' E N E %j Ft. a e u. w a N Vl GM FILL:Silty GRAVEL medium dense, moist 1 ML Brown SILT with fine sand, medium dense, moist 2 15.7 12 3 4 5 SM Mottled brown and gray fine SAND, medium dense, moist 6.6 11 -37%fines ' 6 7 9.9 9 8• -becomes loose 9 10 18.8 7 11 - - 12 — 13 SM Gray silty fine SAND,loose, saturated 33.3 7 14 ^�.. 15 SM Black silty fine to medium SAND, loose, saturated 30.0 8 16 -14%fines • 17 — 18 0- 19 aT . ,�*, Boring Log s� `t Earth Consultants Inc. Zelman Property Parcels A, B and C � 4 ��� NI( ceabdrrcal er,�,eas. 0,v4amrnor soarers Renton, Washington Proj.No. 3000-3 Dwn. GLS Date Nov.'97 Checked RAC Date 11/3/97 Plate A8 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation by others of information presented on this log. Borinc Log Project Name: Sheet of Zelmai i Property Parcels A. B and C 2 2 Job No. Logged by: Start Date: Completion Date: Boring No.: 3000-3 RAC 10/23/97 10/23/97 B-4 Drilling Ccntactor: Drilling Method: Sampling Method: Associited HSA _ SPT Ground St.rface Elevation: Hole Completion: ±24' ❑ Monitoring Well ❑ Piezometer ® Abandoned,sealed with bentonite — e — W No. o L — N o •Blows a E a +- E N E (%) Ft. I ? o u' a 0 ] O N 0 0 ,�P-SM Black poorly graded SAND with silt, medium dense, saturated 26.9 22 ;: . -sand is fine to medium grained o Boring terminated at 21.5 feet below existing grade. Groundwater table encountered at 12.5 feet during drilling. Boring backfilled with cuttings and bentonite. r o- tern ,44+ Boring Log 114 Earth Consultants Inc. Zelman Property Parcels A, B and C fl CededWcal EngineG7,CcaioQlm 4 Environmental SUenrMnt Renton, Washington Proj.No. 3C00-3 Own. GLS Date Nov.'97 Checked RAC Date 11/3/97 Plate A9 Subsurface co editions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and ji dgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation t y others of information presented on this log. Test Pit Log Project Name: Sheet of Zelman Property Parcels A, B and C 1 Job No. Logged by: Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-101 Excavation Contactor: Ground Surface Elevation: N.W. E:cavatinq Notes: — - 0 -c e 0 D Surface Conditions: Grass - W L 1 + . a d a E a } E N E (%) L 7 V' M 0 7 N 0 0 vv T SM FILL: Brown silty SAND with gravel, medium dense, moist v�M. 1 20.0 2 3 4 8 s ML Gray sandy SILT, medium dense, moist 6 22.1 7 -mottlings from 5' s 9 10 21.6 11 12 13 14 Test pit terminated at 14.0 feet below existing grade. No groundwater encountered during excavation. r c 444+ Test Pit Log a, Earth Consultants Inc. Zelman Pro a Parcels A, B and C (r.r. PrtYD�\� ��r��� "�' "°'°�""envtrenmentsi '"" Renton,Washington J Proj.No. 3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A10 Subsurface co editions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and ji.dgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation I,y others of Information presented on this log. Test Pit Log Project N:ime: Sheet of Zelmal Property Parcels A, B and C 1 1 Job No. Logged by: Date: Test Pit No.: 3000- DSL 10120197 TP-1 02 Excavatio i Contactor. Ground Surface Elevation: N.W. Excavating Notes: u — o L •e o Surface Conditions: Grass W t .0 4 a u (%) I ? e LL. M 7 ] L• O Co N SM FILL Brown silty SAND with gravel, dense, moist 5.5x -plastic M 2 s SM 2"sod) Brown silty SAND, medium dense, moist 27.8 4 5 6 7 -sloughing in sides 8 -fines content decreases 70.5 9 — 10 11 12 slow inflow of groundwater is Test it terminated at 13.5 feet below existing grade. Groundwater table encountered at 13.0 feet during excavation. r o- v ri �r : idat Test Pit Log jfF4tiIiIEarth Consultants Inc. Zelman Property Parcels A, B and C • WV\�f1 gF/ Ge " •'Engineers,Geologists`er,"'°'"m"'scia"a" Renton,Washington ▪ proi.No. 3000-3 own. GLS Date Nov.'97 Checked RAC Date 11/3/97 Plate Al l Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation by others of information presented on this log. Test PA Log Project Name: Sheet of Zelman Property Parcels A, B and C 1 1 Job No Logged by Date: Test Pit No.: 3000,3 DSL 10/20/97 TP-103 Excavation Contactor: Ground Surface Elevation: N.W. Excavating Notes: _ _ _ t ! ti o Surface Conditions: Grass (%) • i • a : 7 i L H O 0 0 SM Brown silty SAND, loose to medium dense, moist 35.3 1 ML Brown SILT, medium dense, moist 2 3 ' SM Gray silty fine SAND, loose to medium dense, moist 12.9 . .� f 5 6 8 -becomes dense 32.3 ; to -becomes wet • 11 12 — 13 -6"diameter log 40.9 to 15 is Test pit terminated at 16.0 feet below existing grade. No groundwater encountered during excavation. r- 0- sr (copTest Pit Log . 4� Earth Consultants Inc. Zelman Pro a Parcels A, B and C f PrtY� i�� ceo°ch""ai` *'et" &environmental Scle 7e a1S°G1tl°" Renton,Washington J Proj.No. 3000-3 Dom. GLS Date Nov. '97 Checked RAC Date Plate Al2 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and udgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretatior by others of information presented on this log. Test Pit Log Project Nar'ie: Sheet of Zelman Property Parcels A, B and C 1 1 Job No. Logged by. Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-104 Excavation Contactor: Ground Surface Elevation: N.W. Excavating Notes: u — o .c v, o Surface Conditions: Grass `- • a U (%) i s i � i 7 a ( N 0 0 0 SM FILL: Dark brown/gray silty SAND with gravel, medium dense to dense, most 16.6 1 -concrete debris 2 3 4 5 - ML Brown SILT, medium dense, moist 34.1 6 7 -12"diameter log 8 -becomes dense 25.3 9 10 11 Test pit terminated at 11.0 feet below existing grade. No groundwater encountered during excavation. r- 0- &' 44It Test Pit Log ` 4(F Ohl i, Earth Consultants Inc. Zelman Property Parcels A, B and C me Njw `""""'`"'g'gi"0"'.Geologists`Environmental Sdersiges Renton,Washington • d Proj. No. 3(+00-3 Dom. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate Al3 Subsurface coiditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and ji dgment They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation I ly others of information presented on this log. Test Pit Log Project Na ne: Sheet of Zelmar Property Parcels A, B and C 1 1 Job No. Logged by. Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-1 05 Excavatior Contactor: Ground Surface Elevation: N.W. Excavating Notes: u _- o t a H -0'o Surface Conditions: Grass W r. -a +'c a. •' a u n aVIA) • i • Li- i 5 a O 0O 0 0 '♦' SM FILL: Brown silty SAND with gravel, dense, moist ♦-♦ 23.4 ♦♦♦ 1 — ♦ 2 ♦+ 3 • • •�, 4 -4"layer of sod SM Brown silty SAND, dense, moist 21.8 5 6 8 —rt - s _.....- -decrease in fines content 11.4 10 11 12 Test pit terminated at 12.0 feet below existing grade. No groundwater encountered during excavation. r c in 44►. Test Pit Log �; (hilli� Earth Consultants Inc. Zelman Property Parcels A, B and C Renton,Washington J T F Proj.No. 3:)00-3 own. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A14 Subsurface cx nditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and j idgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation Dy others of information presented on this log. Test Fit Log Project Name: Sheet of Zelman Property Parcels A, B and C 1 1 Job No. Logged by: Date: Test Pit No.: 30004., DSL 10/20/97 TP-106 Excavatiol Contactor: Ground Surface Elevation: N.W. Excavating Notes: U o .c 0o Surface Conditions: Grass w t + a u n (%) ' i ' a i 0 N o V1 ^^� SM FILL' Brown silty SAND with gravel, medium dense, moist 23.7 ML Brown SILT/sandy SILT, medium dense, moist 2 3 • -becomes gray 4 -roots (4"-6"diameter) 30.4 5 6 7 8 9 - decrease in fines 21.0 10 11 12 13 Test pit terminated at 13.0 feet below existing grade. No groundwater encountered during excavation. r- o- 4/41 Test Pit Log ow Earth Consultants Inc. Zelman Property Parcels A, B and C Ntirp c....chnb-lEngineemGeohogotiaewi`°""""a's Renton, Washington Proj.No. 3)00-3 own. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate Al 5 Subsurface ccnditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and j.rdgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation oy others of information presented on this log. Test Pit Log Project N.,me: Sheet of Zelman Property Parcels A, B and C 1 1 Job No. Logged by: Date: Test Pit No.: 3000-3 DSL _ 10120/97 TP-1 07 Excavation Contactor: Ground Surface Elevation: N.W. Excavating Notes: o t H — Surface Conditions: Grass w L .0 '- • a u (%) A a a LL' A 7 a L V! O 0 0 \ SM FILL: Brown silty SAND with gravel 21.4 2 ML Gray brown mottled SILT, medium dense, moist 3 SM Brown silty fine SAND, medium dense, moist 24.3 4 5 ' 6 -silt content decrease 7 8 • 9 13.5 10 11 — • 12 13 14 15 Test pit terminated at 15.0 feet below existing grade. No groundwater encountered during excavation. r o- lpv. 4411k Test Pit Log ei 760111 Earth Consultants Inc. Zelman Property Parcels A, B and C Renton,Washington J Proj.No. 3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate Al 6 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis an i judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretath in by others of information presented on this log. Test Pit Log Project Name: Sheet of Zel Tian Property Parcels A, B and C 1 1 Job N). Logged by: Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-108 Excavation Contactor. Ground Surface Elevation: N.W. Excavating Notes: W — o } ti o Surface Conditions: Grass a •4- a. ci (%) " a • u- a n a Lj Vl O 0 , ML Brown sandy SILT, medium dense, moist 45.8 1 2 s SM Grades to brown silty SAND, medium dense, moist 4 - 27.8 6 7 - -- ti 8 — -decrease In fines content s 36.1 ` 10 -becomes wet 11 12 — -caving 13 14 — -silt lenses, extremely slow in flow 15 Test pit terminated at 15.0 feet below existing grade. Groundwater table encountered at 14.0 feet during excavation. { 44kV Test Pit Log \Ill Earth Consultants Inc. Zelman Property Parcels A, B and C Renton, Washington Proj.No. 3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate Al 7 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and j.idgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation by others of information presented on this log. lest Pit Log P oject Name: Zelman Pro.- Parcels A, B and C Jc b No. Sheet of Lo9ged by. Date: 1 1 3000.3 DSL Test Pit No.: ENravation Contactor. 10 20 97 TP-109 J.W. Excavatin• Ground Surface Elevation: Nc tes: illt °_ + q o Surface Conditions: Brush a a 4-• 4 U d 1 Es LL E N E L a p M 3 b N N N s♦�♦•♦ FILL: Brown silty SAND with gravel, loose to medium dense, moist ♦1 11111 ►♦♦♦♦♦• 1 15.3 •♦♦♦♦♦• ►♦♦♦♦♦♦� powdered brick, metal ►♦♦♦♦♦! ♦♦♦♦• 2 III 3 ri Gray sandy SILT, loose to medium dense LL=3E PL-28 33.4I 4= Pl-8 III IIIII 6= Grades to gray silty SAND, medium dense, moist i 7Ell I aill 29.2 - gIII -caving I1oi 1t= , I12 = 13 - -becomesNI wet and mottled 30.7 14 • 15 - 111 Test pit terminated at 15.0 feet below existing grade. No groundwater encountered during excavation. r• e. m 1: d41l, rit'it G� /1���1 Earth Consultants Inc. Test Pit Log dry Geo.:C17�'' aa,w� Scientists Zelman Property Parcels A, B and C Renton, Washington Proj.No. '000 3 own. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A18 Subsurface c)nditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and udgment. They are not necessarily representative of other times and locations.We cannot accept res Interpretation by others of information presented on this log. P ponsibility for the use or Test Pit Log Project Name: Zelman Prole Parcels A, B and C Job No. 3000-3 Logged by DSL Date: Sheet Excavation Contactor: 1 10 20 97 Test Pit No.: N.W. Excavatin. TP-1 Notes: Q Ground Surface peVation: NEIu _ t o 4L.. . — _' a E a +- a LI �° Surf Conditions: Brush M 3 e 4 E N O V) O y > > 31.512 N Brown sandy Y SILT, loose to medium dense, moist 11 in immilli 51Grades to gray silty SAND) medium dense, 1.111111 moist 27.9 s MIN 7 Emma. ....11111111 all -d / 25.0 1p ann -decrease in fines content 11 illl 12: -becomes wet • 113 III caving 1 14 - Test pit terminated at 14.0 feet below existing grade. No groundwater encountered during excavation. a • (..%•i, g ( `� ear Earth Co t l ttdll ,,,�, Consultants Inc. 4 � Test Pit Log En �— Zelman Prole Proj.r� 30�p� Property Parcels A, B and C Subsurface cot c`"^ GLS Renton, Washington ditions depicted representDate Nov. '97 analysis and judgment. They our observations decked RAC interpretation t others of information necessarily servations at the time and to Date scarily representative of other times and locations.this exploratory hole, 11/3/97 presented on this log. Plate A19 cations.We cannot a�modified by enainAe.:.._.- Test Pit Log Proje t Name: Zee man Property Parcels A, B and C Sheet of 1 Job l o. Logged by. Date: Test Pit No.: 30(40-3 DSL 10/20/97 TP-111 Exca%ation Contactor. Ground Surface Elevation: N.W. Excavating Notes w t— ° .E • ti o Surface Conditions: Brush a a + a u 2 (%) A e IL • E N E L O N = y ML Brown sandy SILT, loose to medium dense, moist 19.3 1 2 3 4 36.6 5 6 7 8 9 -becomes wet 37.0 10 -caving 11 12 -6`diameter log 13 14 Test pit terminated at 14.0 feet below existing grade. No groundwater encountered during excavation. r P "pl. 441% Test Pit Log mrrit r Earth Consultants Inc. 7 111 //JO aawkmnrnerg14 Zelman Property Parcels A, B and C Renton, Washington Proj.No. 3000-3 I Dwn. GLS I Date Nov. '97 Checked RAC Date 11/3/97 j Plate A20 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis an judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretatic i by others of information presented on this log. Teat Pit Log Proje t Name: Ze man Property Parcels A, B and C Sheet of 1 Job No. Logged by: Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-112 Excavation Contactor: Ground Surface Elevation: N.\V. Excavating t Notes a W v, o Surface Conditions: Blackberry Bushes a n a um (%) M E e E N E L O > w' N ML Brown SILT, loose to medium dense, moist 32.2 1 2 3 4 5 SM Grades to gray silty SAND, loose to medium dense, moist ssmo 33.0 . . • 7� 8 -caving 10 - -becomes wet 11 31.4 . f 12 - 13 = I ` 14 Test pit terminated at 14.0 feet below existing grade. No groundwater encountered during excavation. r c 'it1`: p. 4411. Test Pit Log Ihei -01410 Earth Consultants Inc. Zelman Property Parcels A, B and C q .er„w sdaltiStS Renton, Washington Proj.No. 3000-3 Dwn. GLS I Date Nov. '97 Checked RAC I Date 11/3/97 Plate A21 Subsurface onditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis an< judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretatic n by others of information presented on this log. Test Pit Log Project name: Sheet ZeInvin Prope y Parcels A, B and C 1 tof Job No. Logged by: Date: Test Pit No.: 3000.3 DSL 10/20/97 TP-113 Excavati)n Contactor: Ground Surface Elevation: N.W. Excavating Notes: W L .c • ! w o Surface Conditions: Grass ' a U 2 I%j M ? e ms a 3 ] LL V1 O ow ML Brown SILT, loose,wet 37.4 LL=42 PL=30 PI=12 2 3 4 -mottled 5 6 39.7 7 { 8 SM Brown silty SAND,loose to medium dense,wet 26.5 9 — -caving 10 11 Test pit terminated at 11.0 feet below existing grade due to caving. No groundwater encountered during excavation. r c 441V Test Pit Log `- I►h -li,�1i11 Earth Consultants Inc. Zelman Property Parcels A, B and C m `I a enviconmersal ScientistsRenton, Washington a- Proj.No. 3000-3 I own. GLS I Date Nov. '97 Checked RAC Date 11/3/97 Plate A22 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and judgment They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretatic n by others of information presented on this log. Test Pit Log Project Naune: Sheet of Zelmar Property Parcels A, B and C 1 1 Job No. Logged by: Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-114 Excavatior Contactor: Ground Surface Elevation: N.W. E:<cavating Notes: u - - o L e — Surface Conditions: Blackberry Bushes w t o C , a ° (%) O. • u. i i (40 w ML Brown SILT with sand, loose, moist 31.9 1 2 3 4 -becomes sandy 34.8 6 7 8 28.9 9 SM Brown silty SAND, loose to medium dense, moist to wet 10 • 11 • 12 -caving �4 13 ML Gray sandy SILT, medium dense,wet 14 33.5 15 16 Test pit terminated at 16.0 feet below existing grade. No groundwater encountered during excavation. r 0 it, Al Test Pit Log �; - y`�, Earth Consultants Inc. Zelman Property Parcels A, B and C 1�1\11 `e""A-t..k-al&Vince""°`°irc"&Emirorrrerial 5"`"`" Renton,Washington Proj.N .. 3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A23 Subsurfai a conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis i.nd judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation by others of information presented on this log. Test Pit Log Sheet of Project Na ne: 1 1 Zelman Property Parcels A, B and C Date: Test Pit No.: Job No. Logged by:3000-3 DSL 10/20/97 TP-116 Ground Surface Elevation: Excavation,Contactor: N.W. E xcavatinq Notes: — • — Surface Conditions: Grass O L • N O W L ,n • a u (%) • a e U. • 0 ] L O y N , ML Brown SILT, loose, moist 1 40.1 2 -becomes mottled 3 4 s SM Grades to brown silty SAND, loose,wet 6 33.0 7 ~— f3 — -becomes gray s -caving 10 11 ---40.1 -peat seams 12 13 Test pit terminated at 13.0 feet below existing grade. No groundwater encountered during excavation. r 0 Test Pit Log � e / Earth Consultants Inc. Zelman Property Parcels A, B and C I) (itlI\'Q ^°''scseross Renton,Washington Proj.ho. 3000-3 I Own. GLS I Date Nov. '97 Checked RAC I Date 11/3/97 Plate A25 Subsurf ce conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis.and judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation by others of information presented on this log. Test Pi:: Log Project Narne: Sheet of Zelman Proper Parcels A, B and C 1 1 Job No. Logged by: Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-118 Excavation Contactor: Ground Surface Elevation: N.W. E<cavatinq Notes: - o .c e y o Surface Conditions: Bare, shredded wire pile w L +. • a O .o (%) w ? • A 7 7 7 0 ML Gray sandy sILT, medium dense, moist 1 16.9 2 3 4 45.4 5 6 .7 -caving s SM Gray silty SAND, medium dense,wet 9 Test pit terminated at 9.0 feet below existing grade. Groundwater seepage encountered at 8.0 feet during excavation. r P CI grit(1; 414Test Pit Log . ��, - Earth Consultants Inc. Zelman Property Parcels A, B and C m � 'Brig'v"'` "n`Envtrontrental S°""b" Renton,Washington o. Proj.Nc. 3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A27 $ubwrfai:a conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis a nd judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interprets lion by others of information presented on this log. Test Pi-. Log Project Narie: Sheet of Zelman Property Parcels A, B and C 1 1 Job No. Lo9ged by: Date: Test Pit No.: 3000-3 DSL 10/20 97 TP-1 1 9 Excavation Contactor: Ground Surface Elevation: N.W. E<cavatinq Notes: u _ _ — o L ° o Surface Conditions: Bare W L .a } ' a O (%) M a o i n i f] N rA FILL- Rubber upholstery, wires, metal debris t -- 2 -minimal natural soil 3 4 - 5 Test pit terminated at 5.0 feet below existing grade. No groundwater encountered during excavation. • o- 1 P1 44I Test Pit Log y Earth Consultants Inc. Zelman Property Parcels A, B and C ��1 ` �j) .►Ai •kEnvironrrcnal sc, Renton,Washington a Proj.N<. 3000-3 Dwn. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A28 Subsurfac e conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis aid judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpreta ion by others of information presented on this log. Test Pit Log Project Name: Sheet of Zelm2 n Property Parcels A, B and C _ 1 1 Job No. Logged by: Date: Test Pit No.: 3000-a DSL _ 10/20/97 TP-120 Excavatic n Contactor: Ground Surface Elevation: N.W. lixcavating Notes: U — o L a N o Surface Conditions: Bare w a. .0 4- ' a U .a I%) " a i A 7 a L fA 0 0 N FILL:Wood waste, rubber, metal, wires, upholstery 1 2 — -minimal natural soil 3 — • 4 — • s Test pit terminated at 5.0 feet below existing grade. No groundwater encountered during excavation. r o- N 441 Test Pit Log f ?i 1J) Earth Consultants Inc. Zelman Property Parcels A, B and C t � `N. '•° 'e 'er'�o`°�'"`erwiroverenod s�"m" Renton,Washington a Proj.No. 3300-3 Own. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A29 Subsurface o inditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and judgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretation by others of information presented on this log. Test P t Log Project Na re: Sheet of Zelmaln Property Parcels A, B and C 1 Job No. Logged by: Date: Test Pit No.: 3000-3 DSL 10/20/97 TP-121 Excavator Contactor. Ground Surface Elevation: N.W. Excavating Notes: U _ _ — o r ! H o Surface Conditions: Grass W t o - 'CL (%) e a 4" a n i L o N 0 N N ♦♦�♦�♦ SM FILL: Muffler, metal debris, brown and gray silty SAND with gravel, e�nse, moist ♦♦♦ 1 ♦♦♦♦♦♦ • � 2 -coke cans ♦♦i♦i♦ • 16.3 �♦�♦�♦ 3 — -plastic ♦♦♦♦i♦ •:•:• 4 -brick debris ♦♦♦ ♦��•• s — -pipe fitting ♦♦.s• 6 ML Gray SILT, medium dense, moist LL=38 PL= 30 36.8 P1=8 8 9 10 -caving due to seepage 38.E 11 -becomes wet and dense • 12 13 Q Test pit terminated at 13.0 feet below existing grade. Groundwater table encountered at 13.0 feet during excavation. r- 0- (4,1"4.1 �; 41411. Test Pit Log vi Earth Consultants Inc. Zelman Pro a Parcels A, B and C 9 '( //\1 «..Enone .k d„ s p rty Renton, Washington J r1 Proj.No. ;000-3 Own. GLS Date Nov. '97 Checked RAC Date 11/3/97 Plate A30 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole,modified by engineering tests, analysis and udgment. They are not necessarily representative of other times and locations.We cannot accept responsibility for the use or interpretatior by others of information presented on this log. 410 Logged By RWB BORING NO. Date 5/10/86 ELEV. +14± US Depth (N) w As -Built Graph CS Soil Description ft � Sample Blows t. 10°j Diagram Well:__ - y , , rr— sm Silty SAND, brown, loose, moist = 5 22 w.' •• ° 2 sL..1:,,.;.; , I 3 28 •;:::.1 sp SAND, dark gray, medium to fine, medium - 10 -.,, dense, wet. - 13 .':,•.!: • Silt % increases with depth grading to _ ;•: ;'� :;y silty sand - 15 ..� '` e :.:i' .•1 - :I: 19 24 a.L ,••L." 'i•Yi:�. - 1 •iz., I.]. :i: : 20 O. p •:? —25 `N ' r, _ gib: 30 11: ii ml Sandy SILT, light gray, medium dense, 11 g •:' ° �'1tr .1 some organic fragments, wet _ i ::'Oo°G LI`uE :U ii I, 19 r' - .;;-1 !, ' . " '_ 40 ?:-.. ' sp SAND, dark gray, medium to fine, dense - T 52 > ?: . to very dense, wet - . u:; . 7-55 T 30 Total Depth = 58. 5 feet (B) denotes bentonite pellets • BORING LOG � STER_NOFF :METALS PROPERTY t i Earth •� REtiTOV, WASHINGTON Consultants Inc. • 1j" GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 3000 Date may'86 Plate A31 BORING NO. 2 Logg d By RWB Date 5/10/86 ELEV. +14± US (N) As - Built Graph CS Soil Description Depth w Sample Blows (oWell Ft. ' Diagram sm _ Topsoil, silty SAND, brown - .a r(:«rr �. = 5 32 a)'• 4 f: brit _ Rf •7 ' ''=� �` ' Silty SAND, brown/mottled, medium to . ..„ —4 ' -i. f.II-1.1• 1111 fine, subangular to subrounded, loose, _ .'211--# -1 wet 6 �` w F cz %.‹;.;3i sm - `(r}}{ l'}`#f#c} - Z 4 g.'-t `" i. ctr . I� :Ij:l..l: medium dense _ = 10 i{ iil-ii�i: — 20 :g.' IE:. • 1133;31. _ �.•:ff-- >; f � r c: :.- — . 1::r Ffff' dense — 25 n::.- Totr..l depth = 29 feet (B) denotes bentonite pellets BORING LOG #� 11\ STERNOFF METALS PROPERTY 4) lil RENTON, WASHINGTON Earth Consultants Inc. . • GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 3000 Date May' 86 Plate A32 BORING NO. 3 Logged By RWB ELEV. +14+• Date 5/10/86 US Depth (N) w As - Built Graph CS Soil Description (ft.) Sample' Blows (%) Well Ft. Diagram V. <e/m Silty SAND, bluish-gray, medium dense, - °. • ,, K (fill) , noticeable odor - = 17 30 • . ==.t : sm Silty SAND, gray, loose, wet, some odor 5 :� . 1 j:.r sm Silty SAND Q _ = :•L .I : o0 mh Clayey SILT, tan, soft, some organics 715 • •.bo.:: • ="1"-`�t/mf SILT and PEAT = 12 • j ' -.,;.,:t.: t--- - - —20 s y r r: . sm Silty SAND, gray, fine, loose to medium - 'T 10 20 • ^'_k ..``. •' ] dense - _L ;.:•::' ` . —25 ::�_• ; :: K - = 12 :>: ...: —30 •-••:; ?may --- -- - ------ vi. ' : • jifi i. ml/mh Clayey SILT, tau, medium high,. plastic, _ 1 12 17 .:u: = '� ir-- --- DAP--aJ:,am.cs —3 5 sm Silty SAND, medium to fine, dense, wet : a > f - =-: Z 47 = ......-.., - T 40 Total depth = 44 feet (B) denotes bentonite pellets BORING LOG ii• I. i•.,. STERNOFF METALS PROPERTY II '' �: RENTON, WASHINGTON Earth : Consultants Inc. . I' GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 3000 Date May' 86 Plate A 3 3 BORING NO. 4 Logged By RWB + ± ELEV. 14 Date 5/14/86 Graph CS Soil Description Depth Sample Blows (,VI Ft. — '1I I Hi!,; ml Sandy SILT, gray, some clay. Brick - = 9 32 ill 1 1i rubble at surface, mottled, low 5 SZ I'll i plasticity _ 4 35 - -10 Ili _ Z 2 rr —1 5 ,,,=.7:::::..b pt PEAT, brown fibrous, very soft, wet - ~7.5 - ----- - _L 13 30 �•17: sm Silty SAND, gray, medium to fine, -20I.- ' medium dense, wet ..�.. = 15 Lr '�. �i -- - ----- --- —25 II 'll1 1 of SILT, gray, very soft, organic, wet III --- _ = 2 1 i I 11181 —ol- Tan SILT — —30ter; sr( Silty SAND, gray, medium to fine = 0 ; _:1: ;y..1: sand, very loose to medium dense, wet —35 23 `{?}fi1: - = 16 16 iitt �}:.rfr. _1 ;r,:tt i.f f}}r: —40 .7J!:}.i11:1. 1.{{� �• - •T 21 22 .,: - 45 g rjr!Y' Tctal depth = 49 feet • # Il BORING LOG �. STERN BORING METALS PROPERTY RENTON, WASHINGTON Earth Consultants Inc. • :I' ‘ ! GE01 ECHNICAL ENGINEERING & GEOLOGY Proj. No. 3000 I Date ;day, 86 IPlate A34 BORING NO. 5 Logg!d By RWB +14± ELEV. Date 5/14/86 US (N) Graph CS Soil Description Depth Sample Blows (oW) Ft. iliH: ml SILT, brown, soft, wet -_ I 5 30 Ilild ll;li - -------.133 - 5 2 'fti-- - 3 25 is c`t } c _ j:, ;.k —10 !� . I su Silty SAND, brown to tan, fine sand, - ii lj j loose to medium dense - I. 2 22 3l:l j�'3:1, {ti! 1 ;i, — 15 -:11-43,,,,• - tf`}{`3i:3 - Z 24 4}„`t}i ArA.;:.:< —20 �::I:�:: : Ii _ 24 28 4:1 1;::11:4 —25 iff}}..,=tit-. - #kf{ k off: - T 25 .L:Ltf::1:. Tctal depth = 29 feet BORING LOG STERNOFF METALS PROPERTY RENTON, WASHINGTON Earth Consultants Inc.i , GEOI ECHNICAL ENGINEERING ex GEOLOGY Proj. No. 3000 1 Date May'86 Pate A35 , TEST PIT NO. Logged By RWB Date 5/10/86 Elev. +14± Depth W (ft.) USCS Soil Description (%) 0 ••••• FILL ------- .00. N/A FILL, unit consists of shredded non-metalic auto •• ••• parts in sand/silt matrix. Unit is gray and wet •�•�•• •••••• 5 .i•.•i •.•••• .s• SZ ••.• --- :I? '•'• sm Silty SAND, bluish gray, medium to fine, loose, • }; 4% occasional clay-silt inclusions 10 '- Total depth = 9 feet 15 Logged By _DM_ Date 5/10/86 TEST PIT NO. Elev. +14± 0 •.•�•t N/A FILL, mixture of steel slag mixed with native soil, ••••• traces of oil ••••*• iii* ••♦ �••a 5 ---- ml/mh Clayey SILT, bluish gray, mottled, soft, medium plasticity, moist 10 — Total depth = 8 feet 15 TEST PIT LOGS i' j` 4 STERNOFF METALS PROPERTY i I Earth ,:, . RENTON, WASHINGTON Consultants Inc. GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 3000 I Date may'86 IPlate A36 TEST PIT NO. _a__ Logged By RWR Date 5/10/86 Elev. +141- Depth W (ft.) USCS Soil Description (%) 0 ve �14 sm FILL, silty sand, black with some oil - 1 • 4I ml SILT, tan with fine sand, loose, non-plastic, -lii: , moist �1I1I 1 5 Total depth = 6 feet 10 15 RWB Logged /1 TEST PIT NO. �_ +14± S/10/86 Elev. Date - r ,+ I ml/ Sandy SILT, brown to tan, loose to medium dense, - '•t' I` sm some roots ):.;. I I 5 '' - Total depth = 5 feet 10 -- 15 V TEST PIT LOGS ,±;' STERNOFF METALS PROPERTY RENTON, WASHINGTON Earth °,; Consultants Inc. • ..; • GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 3000 Date May'86 Plate A37 TEST PIT NO. Logged By RWB Date 5/10/86 +14+ Elev. Depth (ft.) USCS Soil Description 0 (Vol! N/A FILL, debris includes ash-slag, brick, concrete and scrap iron it ---- ml SILT, bluish-gray, slightly mottled, occasional 5 ! organics, noticeable H2S odor I Total depth = 7 feet 10 — 15 Logged By RWB Date 5/10/86 TEST PIT NO. 6 Elev. 4'141. 0 }fl �! ?} I' ml/ Sandy SILT, brown, fine, loose, moist - o � .� sm • 111 ---- - - • 111 5 -lit- ml Clayey SILT, brownish-gray, mottled, soft, moist to wet Total depth = 7 feet 10 --- 15 TEST PIT LOGS •'1 i /; • STERNOFF METALS PROPERTY I !I # Earth • RENTON, WASHINGTON I I , Consultants Inc. `• GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 3000 Date gay'g6 Plate A38 d Z - X CO APPENDIX B LABORATORY TEST RESULTS E-3000-3 Earth Consultants, Inc. SIEVE ANALYSIS HYDROMETER ANALYSIS m SIZE OF OPENING IN INCHES [ NUMBER OF MESH PER INCH,U.S,STANDARD _ GRAIN SIZE IN MM i . ,---L. Z � 0 V in N :--�.- .-g w ' 3 , a p WO 0 O M C as Op ON O O O O 0 D p N 0 O O 8. O O 0 O _ ` 100 10 _ 90 _ . _ r 10 w �-11 m _ zo p c) 80 - m n _ 7. < < • :' -13 3 0 7J z m 70 c") (� m �, t r m so ' . �+ _ O _ D 50 50 JO o .. -CD m Y DO Z 40 1 CO 60 o m - -< _• •1 S ' , \ 80 I CD 20 n N X' rP _ CD I 90 a n •O _ xy n 0 1 1 1 1 1 1 1 1 I CI I I I I I I I I I I I 1 I _ I.- 11 1_ _ 100 (D o O O 0 0 0 0 0 0 OWW c M N 1- W t0 V M N• p OO O MO O 0 0 0 0 0 N O O O O 00 l0 O MN •-• • O O O O O O �� rt m D M N GRAIN SIZE IN MILLIMETERS c a K Z COARSE I FINE -COARSE I MEDIUM I FINE FINES co COBBLES GRAVEL SAND ro N III a m r In n r 0 D Boring or DEPTH DESCRIPTION Moisture LL PL Z KEY USCS Content (%) Lo m D Test Pit No. {ft.1 • r J O y to ....... m 0 B-1 25 SP-SM Gray poorly graded SAND 25.0 -- -- °» a —-- B-3 12.5 SM Gray silty SAND 30.8 -- -- cii a w n B-4 5 SM Brown and gray silty SAND 6.6 -- -- r B-4 15 SM Black silty SAND 30.0 -- -- �— SIEVE ANALYSIS HYDROMETER ANALYSIS 7 C. SIZE OF OPENING IN INCHES ( NUMBER OF MESH PER INCH.U.,S.STANDARD _ GRAIN SIZE IN MM I o °° ro OO M O O `- N rD at M N �-4 �}Z, 4 r M� _ r- O t0 N f'O') t00 000 N 0 O O O p O O O S, O O 0 p100r _ �r'L j �T r 6Lr —41' . o o lit,' 90 a 10 I 0i cD ,..a80 NIIINIIIIIIIIIINIIIIIMINIMMINIMINNIIMMIS 20 _ —I-I- m l'N� MM� m P c C) Do m 70 �� 30 0 L� Z • O --icn - m � - Z �1 soIII -MMMwM' MN= 40 i Z INIIIMI•M N 0 50 50 JD I. to _ m r-. -< �3 rn - (n ��� s o m Z = 40 I CO a = —< x m , C) O 1 i30 70 m .�_ G. n _ - 80 —i CD 20 — CD 1--' a D 10 90 n to 1 IIIII I I I (Ill I l l 1 11 I t l I I I III 1 100 (D• O °O O 0 0 0 0 0 0 0 00 co •V r'1 N r co O V Cl N r ao to V Cl N CO O Cr CON JJ 0 0 0 CO O CrCO N r ' O O O O O 0• 00 0 0 O 0 0 ��' rrr m D Cl N r GRAIN SIZE IN MILLIMETERS ' • ' ' 0 - r7 Z COARSE I FINE COARSE I MEDIUM I FINE FINES K M COBBLES GRAVEL SAND • ro ICI 1- w a m F-• 0 H . H• CD Z KEY D Test Pit No.Boring or DEPTH(ft.) USCS Content (%) LL PL N .) DESCRIPTION J rt O y rn TP-101 1 SM Brown silty SAND 20.0 E CI TP-101 10 ML Gray sandy SILT 21.6 -- -- co n " El TP-103 1 ML Brown SILT 35.3 -- -- • SIEVE ANALYSIS HYDROMETER ANALYSIS SIZE OF OPENING IN INCHES I NUMBER OF MESH PER INCH. U.S STANDARD , GRAIN SIZE IN MM ((�� O ��- O w v M N O O 8 0 0 N (SD a M N �.r-4- , el v 0 LeD 0 o O o0 op o 0 0 0 0 3 0. 0 0 0 0 z .. .- N M a to�D N 0 O �., loot ^�� �! I"'"" I r 1 IIII I I1 11 1 I I 1 1 summuummmonli p 10 .mmonn. 4� 20 0f. .13 80 'o x m - m 0 m �o Z J 30 7m j H z 0ommimmi ` m O 50 _ ■ cn m 00 m x , , 60 z 40 o D m_ 30 m_ -...1 _ J .) (7 80 -I 20 ' N C) N - ' A' CD CD r • 90 Cl. a 10 n PT) I- ] [ I [ 1 I I IIII I I 1IIIC11[ 1ILI1_ a O too (D G)• O p 0 O o 0 O o 0 0 0 °o tD vry Co)r o l0 v CI N '' O O v O O O O O O O O M N o m 1D v M N r GRAIN SIZE IN MILLIMETERS . 00 0 0 0 0 a Z COARSE 1 FINE COARSE 1 MEDIUM 1 FINE FINES EED .. ''< COBBLES GRAVEL SAND ro t4 r m rat m Moisture r CD Z Boring or DEPTH USCS DESCRIPTION Content (%) LL PL r, D KEY Test Pit No. (ft.) -4 4 In rt r- o cn cn 07) co TP-104 5.5 ML Brown SILT 34.1 -- -- F ¢. 0——— TP-105 10 SM Brown silty SAND 11.4 -- -- co n w "" TP-106 5 ML Gray SILT 30.4 -- -- a_:___n SIEVE ANALYSIS HYDROMETER ANALYSIS 't, SIZE OF OPENING IN INCHES I NUMBER OF MESH PER INCH.11,S,STANDARD i GRAIN SIZE IN MM O r,� ' m om o o g �� �o No • • N 00 0 0 O. 0 0 m t�0 N 0 �l}}���ll��,, �� L}}`�1 jj lI (j jj ]j I I I 0 07....---.1.X- -.:.' 100 z � tD d C) N �� ui l � i •.... '."_� !�` 1 1 � 1 I I � ��._I I __I I ,8 -,N o /411) 90 ` w �— i --- = m i 20 r .1 m ( ._ m I 7J i 30 33 ? x m 70 I - ` c� ] m m I © z r -i _ I 40 -1 -n so I X'14' I O m 5o D P �f DD 33 w m o ( 1 - 6o CO z _ 40 r < m n 0 �o • m \.\\ , D :; 30 0= 0- 20 co n N . 0 tD 90 1-,n to _ _ - a ,tyM 0 I I l I l 1 11111 I LI I [ I ` I ILTI 1I I I L L11 A_ 100 D 0 0 pO m Lc) v CO N 00DOC) N CO 0• M o Cl N ro 0 OD d7N T pp g O O 8 ._—, a it M D Cl NGRAIN SIZE IN MILLIMETERS 0 0 0 0 0 0 0 O n Zco f COARSE [ FINE COARSE I MEDIUM [ FINE ) FINES 'G 0 I COBBLES 1 GRAVEL SAND 'L7 N r a a rn Moisture PL a En o Z Boring or DEPTH USCS DESCRIPTION Content (%) LL r� KEY Test Pit No. (ft.1 o v to ..� m 15.3 -- -- m 0 TP-109 1 SM Brown silty SAND with gravel d -- _ a --- TP-111 1 ML Brown sandy SILT 19.3 w n ❑ TP-112 1 ML Brown SILT 32.2 --I • SIEVE ANALYSIS HYDROMETER ANALYSIS 7 SIZE OF OPENING IN INCHES I NUMBER OF MESH PERINCH, U.S,STANDARD N_ GRAIN SIZE IN MM ----71 1 O „6 O O O . paMN O O g M N z Ni 0r� u fr � C O f) 000� 000 O pO O C! 0. 8 100 ' Y ° 9 ,. � 10 I / 90 ~ — m - � ' " 20 Y '-'1 _ v x .� m 7 = \ ' . 30 DO m l m Z -1-1so C� d O " 50 Cl) 0 0o m m z * 4 0 WG • � C) 70 ,o ? 30 i m n -) 80 --1 S 20 f9 n N 7C N " CD r 90 a 10 _ w - to I II I 1 1 11 1 nil ' I. 1 1 . Ill 1 1 r 1 I Hit �100 G. p °0 0 0 0 0 . 0 O o co tD v CI tV r CO tD v M N r 0 O O O N O• 00 O O O O O ■--� r Fri >, M N o CO tD ` " N r GRAIN SIZE IN MILLIMETERS DJ r Z COARSE 1 FINE COARSE 1 MEDIUM 1 FINE FINES (-1). - < COBBLES GRAVEL SAND N a a m r co n Moisture 4' H. r D KEY Boring or DEPTH USCS DESCRIPTION Content (%) LL PL Test Pit No. Vt-1 LO mrC o > to m cn 0 TP-114 1 ML Brown SILT with sand 31.91) co -- -- I a, 0——— TP-118 1 ML Gray sandy SILT 16.9 -- -- m n U-' 100 80 x 60 w 0 z H v A-Line I— 40 U, a g 20 'Mle CL-ML M'e, I 0 20 40 60 80 100 LIQUID LIMIT . Natural KuY Boring/ Depth Soil Classification USCS L.L. P.L. P I. Water Test Pit (ft) Content /0 B-1 7.5 Gray SILT ML 35 29 6 34.7 A B-2 10 Gray SILT ML 37 31 6 37 .5 Atterberg Limits Test Data Qj ,� ��� �*‘ Zelman Property Parcels A, B and C I ; '� Earth Consultants Renton, Washington GcdttYr�ml FnlWoers. Y FflNtorYnental Inc.SC1CrNKiS \\\ Proj. No.3000-31 Date Nov. ' 97 Iate B6 100 80 x 60 W 0 ►- J U 1 40 ''-'A-Line d 20 one CL-ML 43e, 0 20 40 60 80 100 LIQUID LIMIT Natural K47 Boring/ Depth Soil Classification USCS L.L. P.L. PI. Water Test Pit (ft) Content i1 TP-109 4 Gray SILT ML 36 28 8 37 .1 414 TP-113 1 Brown SILT ML 42 30 12 42.2 II TP-115 5 Brown SILT ML 36 29 7 35.4 TP-117 5 Gray SILT ML 38 31 7 39.5 '1 TP-121 7 Gray SILT ML 38 30 8 38 . 2 Atterberg Limits Test Data 'ja1: 4NI� i '� ,�, Earth Consultants Inc. Zelman Property Parcels A, B and C Renton, Washington Proj. No.3000-31 Date Nov. '97 1 Plate B7 VII. BASIN AND COMMUNITY PLAN AREAS VIII. OTHER PERMITS IX. EROSION/SEDIMENTATION CONTROL DESIGN X. ADDITIONAL DOCUMENTS XI. MAINTENANCE AND OPERATION MANUAL "01,•• )._ ,) 44, .-- ---•_. ) / ..:'•;;-7-- r-tr•M ?"1111;j115 4 a.. 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