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s , <br /> I <br /> I • <br /> Quarterly Report - September 1999 <br /> I CHEROKEE TRUCK STOP <br /> 3535 East Cherokee Road, Stockton, California <br /> 1.0. 1INTRODUCTION <br /> At the request of Mr Ellis Cecchmi of Cecchim, Cecchim and Giovannoni,, Advanced <br /> GeoEnvironmental, Inc (AGE) has prepared this report for field work performed at 3535 East <br /> Cherokee Road, Stockton, California, during the third quarter of 1999 The scope of work this <br /> quarter included advancement of twelve soil borings and monitoring the ground water well network <br /> on the site This report documents collection and analysis of soil and ground water samples and the <br /> Iresults of ground water,mcasurements <br /> The site setting is illustrated in Figure 1 Structures, monitoring well and soil boring locations are <br /> illustrated in Figures 2 and 3 The site history and a description of previous work performed at the <br /> site are summarized below <br /> 2.0. BACKGROUND <br /> lie The site is located in a commercial area of low topographic relief in the eastern portion of Stockton, <br /> California, adjacent to Highway 99 (Figure 1) The property was formerly utilized as a truck fueling <br /> station A truck repair facility is located north of the site A domestic well is located approximately <br /> r 200 feet northwest of the fueling islands Structures, monitoring well and domestic well locations <br /> are illustrated on Figure 2 Former dispenser island, UST and piping locations are illustrated on <br /> Figure 3 <br /> Three 500-gallon waste oil tanks were removed from the site prior to 1990 Details of the waste oil <br /> UST removals were not available to AGE <br /> Unauthorized releases of hydrocarbons were reported from fuel piping at the site on three occasions <br /> I in 1988 and 1989 The PHS-EHD subsequently required,investigation of the extent of impacted soil <br /> and ground water <br /> 21 SITE ASSESSMENT <br /> In May 1990, thirteen soil borings were advanced near the UST, piping and dispenser areas at the <br /> site to assess the lateral and vertical extent of impacted soil Hydrocarbon odor was noted in soil <br /> samples collected in 12 of the 13 borings Petroleum hydrocarbons were found to extend to a depth <br /> of approximately 50 feet below surface grade (bsg) near the fueling island location <br /> t <br /> lie <br /> Five ground water monitoring wells were installed at the site between 1990 and 1996, near the <br /> I ' <br /> Advanced GeoEnvironmental,Inc <br /> 1 <br /> � ' 1 <br /> 5 <br />