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�I�IT�7 I-�WAGEOSCIENCES INC. <br /> ' flrulydmitid c-Rn•cnmul I:u�iu;n-ing • IlpJiiyrulug)" (lr��niriruurm�nl�d• Lu)rrrfinn c= 71�.iiu� <br /> July 15,2008 <br /> 111NA Project No. 2008-080-22 • <br /> Grnnite Construction <br /> 1525 I:ast Mnrino View Drive <br /> �vei�elt,Wnshington 98201 <br /> P011:262135 <br /> ' Attentiou:Steve Pen�iu <br /> SubjCCt: ANALVT[CAL RBSUL7'S <br /> $TOCKPILED SOIL SAMPLINC <br /> Wesl Construction Aren <br /> Su�md '1'ransit Cmnmutcr Statiou <br /> Cverctt,Washington <br /> llcar Mr. Pcrrin: <br /> Pleuse iiud attached thc�nnlytic�l results for stockpile soils s.unpling at lhe Sound <br /> Transit project locntion in Gvcrott, Wnshinglon. During excnvntimt for utilities in thc <br /> nrca, Gi�mitc Const�vcliou(Grnuilc)cncounic��ed soils tliat exhiUited petrolcum stainin� <br /> fmd odor. 1'hese soils were stockpiled and segregatecl f'rom otlicr excavated soils nt Qie <br /> sile. Wc assislcd Granilc:in ll�e chnrncteriziriioii ol'approximntcly l00 cubic yards oi' <br /> pctrolcunrafPccted srockpilcd soils for ch�ractcrizntion aud disposal. <br /> iiWA collectcd tlu•ce stockpilc snmples nt r�ndom locntions from thc tioil slockpile based <br /> on Wnsliingloii llcparlmcnt ol'L:cology(L'cology) Guirlcrnce f'or•Renredintia�o/' <br /> Peb•ole��m Ca�fau�inn�ed SniJs(Lcology, 1995). Bec.luse n specific release source or <br /> inforiuntiou on previous soil remedintiun or chnracleriz;Hiou nt thc locution werc not <br /> rcndily av�iilt�blc, thc soil s,miples were churfictcrizcd ns waste oil or unknown pe4•oleum <br /> in gencral nccord�ucc witli Qic L'colugy Modcl'1'oxics Conlrol Act'I'nble 830-1 <br /> requirements(Lcology,20U7). 'fhc soil samples�vere submitted lo CCf Annlytical in <br /> Gvcrclt,Wnshinglon, I'nr la�bnrntory tmalyses, includiug: <br /> - Diescl nud hcuvy oil rangu pclrolcutn hydrocrirbmts by I':cology Mclhod NW"I'PI I- <br /> n. <br /> -Gasolinc rcmgc pctrolcum hydrocarbons and nrom:llir Irydroc:tvbons by I:colobY <br /> Ntcthod N W'CPI I-Gx/131�I'X <br /> - Polycltlm•inutcd 13iphcnyls(PC13s) by GPA Mcthocl 8082 <br /> - Cnrciuogcuic I'olym•omalic llydrocnrbous(cl'AIIs) by IiPA Mcthod 8290 <br /> - l ialogcnntcd Volatilc Urgnnic Compounds([�IVOCs)by EPA Mcthod 802U5035A <br /> - Lctid by 1sPA AQcthoct 6000/7010 i��so,r,�m,n.�„���w. <br /> s��i��ms <br /> • I.ynmroal,l�'A9803C.5957 <br /> 7e1: A25.77-0.0106 � � � <br /> fu: 425.774.27U ' <br /> www.hw�gm.com '. <br /> 35 <br />