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U N 1 1 1992 <br /> r <br /> Pr-RN11T,/SERVICES <br /> f <br /> To: Donna Heran R.E.H.S. <br /> Environmental Health Division June 9, 1992 <br /> San Joaquin County Public.Health Services <br /> 1601 East Hazelton Avenue <br /> Stockton, CA 95201 <br /> 4 From: Fred Moss <br /> Moss Engineering <br /> 15520 Von Sosten Road, <br /> Trac CA 95376 <br /> Y� <br /> 53 b <br /> Subject: Caldron's General Store <br /> I` 12750 West Byron Road <br /> Tracy,CA 95376 E <br /> Dear Ms. Heran: <br /> Mr. Alfred F. Caldron has requested that I review the soil and water analyses for <br /> samples collected during removal of 2 underground storage tanks. These tanks ? <br /> were removed by Jim Thorpe Oil, Inc. in November 1991. During tank removal and <br /> excavation a total of 4 soil samples and 1 water sample were collected. Three of the <br /> four soil samples did not contain any detectable concentrations of gasoline (TPHg) or <br /> volatile organic hydrocarbons (VOC). <br /> Soil sample S2, which was collected at a depth of 9 feet below surface contained: <br /> j TPHg 2.8. mg/kg <br /> Benzene 85 µg/kg <br /> Toluene 60k <br /> gg/ g <br /> Ethylbenzene 120 gg/kg <br /> Xylene 270 gg/kg <br /> Although the analyses for this sample was below the LUFT Manual guidelines for <br /> TPHg (10 mg/kg) VOCs were detected in this sample and in the ground water <br /> sample. Generally ground water samples collected from excavations are not <br /> considered representative of actual surrounding shallow ground water. Only 1.2 <br /> gg/l of xylene and 0.5 gg/i of-toluene were detected in! the water sample. Both these. <br /> concentrations are significantly less than established MCL or Action Levels for these <br /> fuel related components. <br /> i <br />