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Remedial Action Work Plan - July 1997 <br /> TOP FILLING STATION <br /> 101 South Wilson Way, Stockton, California <br /> 1 0. INTRODUCTION <br /> In accordance with the request of the Top Filling Station,Advanced GeoEnvironmental, Inc (AGE) <br /> has prepared this Remedial Action Work Plan (RAWP) detailing design of a modified remediation <br /> system for the "core" petroleum hydrocarbon-impacted area at 101 South Wilson Way, Stockton, <br /> California(the site) The location of the site is illustrated on Figure i-Location Map A plan of the <br /> site is illustrated on Figure 2 - Site Plan <br />' The RAWP is prepared in response to a request by the San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and in accordance with Central Valley Regional Water <br /> Quality Control Board (CVRWQCB) guidelines for corrective action at leaking underground storage <br /> tank (UST) sites <br /> 20. BACKGROUND <br /> 21 SITE LOCATION AND DESCRIPTION <br /> The site is located at 101 South Wilson Way, on the southwest corner of the intersection of Wilson <br /> Way and Market Street, in a topographically flat area of Stockton, California (Figure 1), <br /> approximately one-half mile north of California State Highway 4 (Cross-Town Freeway) The site <br /> is further described as being located northwest of Section 32, Township I North, Range 6 East, <br /> Mount Diablo Base and Meridian <br /> The Top Filling Station operates asagasoline dispensing station and automobile repair facility A <br /> warehouse/auto repair shop and service station attendants building are located on the site The <br /> surrounding area is utilized for residential and light industrial purposes <br />' Currently, two i 0,000-gallon gasoline underground storage tanks (USTs) are being utilized at the site <br /> as part of business operations <br /> 72 PREVIOUS 1NVESTIC7ATIONS <br />' The following is a brief summary of previous investigation for USTs formerly located at the site <br /> • In December 1988, two gasoline USTs were removed from the site Following removal, <br /> samples were collected from beneath the tanks and the associated product piping The <br /> samples were submitted to a state certified laboratory and analyzed for total petroleum <br /> hydrocarbons quantified as gasoline (TPH-g) and volatile aromatics (benzene, toluene, <br />