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Preliminary Site Assessment Report - February 2000 <br /> Bogeth's Orchard Service Station <br /> 2393 East Highway 132, Vernalis,California <br /> 1.0. INTRODUCTION <br /> I <br /> At your request Advanced GeoEnvironmental, Inc (AGE) has prepared this Preliminary Site <br /> Assessment Report for the Bogettz's Orchard Service Station site located at 2393 East Highway 132, <br /> Vernalis, California (site) The purpose of this site assessment is to evaluate the lateral extent of <br /> petroleum hydrocarbon impact to soil and ground water at the site The location of the site is <br /> illustrated on Figure 1 A plan of the site is illustrated on Figure 2 <br /> The scope of work included the installation of five ground water monitoring wells, one soil boring, <br /> conducting a ground water momtonng event and obtaining laboratory analysis of soil and ground <br /> water samples <br /> This report is prepared in accordance with guidelines established by the Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) related the subsurface investigation of the former <br /> underground storage tank (UST) system on the site <br /> lie 2.0. BACKGROUND <br /> A fuel service station was operated on the site up until late 1998, during the removal of the UST <br /> system, evidence of an unauthorized release of petroleum hydrocarbons to the subsurface was <br /> Iencountered <br />' 2 1 SITE LOCATION <br /> The site is located in a business/agricultural area of northern Vernalis, California, in southern San <br /> Joaquin County(Figure 1) The property is located in a lughway-retail business development owned <br /> by Mr Albert Bogetti A produce stand and restaurant is located on the property Three structures <br />' are located on the property The southern boundary of the site abuts Highway 132 <br />' 22 UNDERGROUND STORAGE TANK REMOVAL-, <br /> AGE has been informed that one 10,000-gallon gasoline UST, one 5,000-gallon gasoline UST, one <br />' 5,000-gallon unleaded diesel UST and associated piping were removed from the site in late February <br /> 1999 <br />' The analytical report from GeoAnalytical of Modesto indicated that soil samples were collected and <br /> analyzed from beneath UST #1, beneath UST #2, beneath UST#3 and soil samples were collected <br /> ifrom beneath the ends of the former dispenser island at a depth of four feet below surface grade <br />' (bsg) A `grab' ground water sample was collected at the north end of UST #3 at a depth of twelve <br /> I <br />