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7�". p T' i eva•:.a.. ,t <br />�3 <br /> I. INTRODUCTION <br /> 1.1 SCOPE <br /> Chevron U.S.A.Inc.retained EA Engineering,Science,and Technology,Inc.(EA)to <br /> Install monitoring wells and to sample and chemically analyze tin-,oils and ground water at <br /> former Chevron Service Station(SS)9-1918.45 E.flardir.g Way,Stockton,Cajifomia. <br /> This report summarizes the subsurface investigations cr_-,ducted at this site according to the <br /> format Prescribed by tete:Central Valley Regional Water Quality ContMI hoard(RWQCR). <br /> I3ccause additional monitoring wells and sail Dings are recommended Wore a <br /> remediation system can be.proposed,this report may be considered a pncllrrinary problem <br /> asse.asmcnt report but will contaln the materials otherwise specified in the Sogg's enema of <br /> October 1987. <br /> 1.2 LOCATION AND SITE SE'T'TING <br /> Former Chevron Service Station 9-1918 is located on the northwest corner of the <br /> intersccdon of East Harding 11hy and El Dorado Stmt in north central Stockton,California <br /> (Figure 1). As of 15 November 1988,the site was vacant and unimproved. It is located 3 <br /> miles east of Interstate 5 and less than x mile west of the State liospiW complex at Handing <br /> Way and Calitomia Street. Chevron Service Station 9-1918 had actively dispersal <br /> 9mlinc products and se Mctd automobiles at this site between 1953 and 1988. The <br /> original sudan%M Mrnodcllcd and fiberglass storage tanks installed in 1984. The station <br /> WAS deactivated early in 1988- The station facilities were demolished,and the underground <br /> storage tanks were Pulte!on 24 February 1988. <br /> The site is at an elevation of 14 feet mcan sca level in a mixed residential and co 21 <br /> &=(Figurc 2).although businesses do Frrdominate in the irnm> diate vicinity. "I wo active <br /> se:viee stations sell 9asoline fnxn adjacent corners at the intersection of Harding Way and <br /> E Dotes Suzct:a Shell Station lies Immediately to the cast ar=M Dorado and it Reg^1 <br /> station lies on the southeast comer of the common Intersection, South across Harding Way <br /> and Ona half block west is an ARCO service station.and AM PM Mini-I4 UL-A rrsidsrtco------..------ ----------- <br /> a is the property dirccdy on the west. Medical offices adjoin the property to the north and <br /> nortM•.east. El Dorado Street is limed with businc res on both skies of the saves to the south. <br /> Residences oc=to the north along El Dcuado and to the east on Hurling Way. <br /> I <br />