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e <br />/1 <br /> f <br /> I QUARTERLY REPORT <br />'— April 1996 <br /> Top Filling Station <br /> 101.South Wilson Way <br /> Stockton, California <br /> L <br /> 1.0. INTRODUCTION <br /> I In accordance with the request of Mr. Ed Endich, Advanced.GeoEnvironmental, Inc. (AGE) has <br /> prepared this Quarterly Report for the property at 101 South Wilson Way, Stockton, California. The <br /> report summarizes fieldwork performed at the site during April 1996. The location of the site is <br /> ' illustrated in Figure 1 - Location Map. A layout of the property is depicted in Figure 2 - Site Plan. <br /> e with the San Joaquin County - <br /> This "report is prepared in accordant q , Y Public Health Services <br /> '- Environmental Health Division(PHS-EHD) and the Central Valley Regional Water Quality Control <br /> LBoard (CVRWQCB) guidelines for the investigation of underground storage tank(UST) sites. <br /> I <br /> 2.0. BACKGROUND <br /> i„—r- 2.1. SITE LOCATION <br /> is <br /> The.stte is located at 101 S: Wilson Way, on the southwest corner of the intersection of Wilson Way <br /> and Market Street, in the city of Stockton, San Joaquin County, California(Figure 1). The site is <br /> located within the northeast quarter of Section 32, Township'1 North, Range 6 East, Mount Diablo <br /> -- Base and Meridian. The Top Filling Station (TFS) operates as a gasoline dispensing station and <br /> automobile repair facility located in an area of low topographic relief.in Stockton. The surrounding <br /> area is utilized for residential and.light industrial purposes. <br /> 2.2. UNDERGROUND STORAGE TANK REMOVAL <br /> {— It is our understanding that two USTs were removed from the site in 1988. Soil samples were <br /> I collected beneath each UST and beneath the associated piping. The samples were analyzed for total <br /> petroleum hydrocarbons quantified as gasoline (TPH-g) and volatile aromatics (benzene, toluene, <br /> L ethyl benzene and xylene: BTE&X). TPH-g and BTE&X were detected in the soil samples collected <br /> beneath the USTs at concentrations ranging from 22 parts per million (ppm) to 2,200 ppm. <br /> presently utilizes two 10 000- allon asoline USTs at the site. Approximately two abandoned <br /> TFS p y g g <br /> — USTs are presently located north of the gas station office. The fill ports of the abandoned USTs are <br /> blocked approximately eighteen inches below surface grade (bsg), preventing determination of the <br /> . volumes of the USTs. A plan to remove the abandoned.USTs is presently being considered by the <br /> property owners. <br /> I <br />