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1 On August 13, 1996, Fisch Environmental removed the two USTs The USTs included an 8,000- <br /> gallon tank (Tank 1) and a 1,000-gallon tank (Tank 2) According to the PHS/EHD inspection <br /> notes, both tanks appeared corroded, and holes were observed in the 1,000-gallon UST <br /> ' Gasoline odor was also noted in both UST excavations The tanks and rinsate water were <br /> disposed at Erickson, Inc in Richmond, California <br /> 1 Two soil samples were collected from beneath each former UST, and a single soil sample was <br /> collected from beneath the former dispenser In addition, two composite soil samples were <br /> 1 collected for analysis from the waste sod stockpiles The results of these soil sample analyses are <br /> also summarized in Table 1 <br /> The soil sample collected from beneath the former dispenser island contained the highest <br /> concentrations of gasoline hydrocarbons This sample contained 12,000 mg/kg of TPH-as- <br /> 1 gasoline, 67 mg/kg of benzene, 710 mg/kg of toluene, 220 mg/kg of ethylbenzene, 1,200 mglkg of <br /> xylenes, 215 mg/kg of total lead, and 2,100 mg/kg of TPH-as-kerosene All four of the soil <br /> samples collected from beneath the former USTs contained detectable concentrations of TPH-as- <br /> gasoline (up to 2,000 mg/kg), toluene (up to 26 mg/kg), ethylbenzene (up to 7 1 mg/kg), and <br /> xylenes (up to 16 mg/kg) The two sod stockpile samples did not contain detectable <br /> concentrations of TPH-as-gasoline, benzene, toluene, ethylbenzene, xylenes (BTEX), or methyl <br /> tertiary butyl ether (MTBE) MTBE was not detected in any of the samples analyzed <br /> 1 <br /> 1 <br /> 1 <br /> 5 <br /> 1 <br />