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readings and stained soil were observed only in boring B-2. Geologic cross-sections are <br /> included as Figure 6. <br /> LABORATORY RESULTS <br /> Soil <br /> TPH in Soil <br /> The samples collected from borings B-1 and B-3 and submitted for chemical analysis were <br /> reported by the laboratory to contain non-detectable concentrations of TPH-g. The sample <br /> from B-3 at 35 feet contained petroleum hydrocarbons in the C-28 to C-39 (motor oil <br /> range) at a concentration of 83 ppm. <br /> The samples from P-6 and P-7 contained non-detectable concentrations of TPH in the CS to <br /> C44+ range, benzene or MTBE. <br /> The samples from boring B-2 contained concentrations of TPH-g ranging from 1,300 ppm <br /> at 35 feet bgs to 65 ppm at 55 feet bgs. The laboratory results are summarized in Tables 2 <br /> and 3. Laboratory reports and chain-of-custody forms are includ6d as Appendix B. <br /> BTEX in Soil <br /> The samples collected from borings B-1 and B-3 and submitted for chemical analysis were <br /> reported by the laboratory to contain non-detectable concentrations of benzene and MTBE <br /> The samples from boring B-2 contained concentrations of benzene ranging from 0.027 <br /> ppm to 0.39 ppm. Toluene was detected at concentrations ranging from 0.12 ppm to 0.24 <br /> ppm. Ethylbenzene was detected at concentrations ranging from 0.0035 ppm to 2.1 ppm. <br /> Total xylenes ranged from 0.0095 ppm to 4.3 ppm. <br /> The samples from P-6 and P-7 contained non-detectable concentrations of benzene or <br /> MTBE_ <br /> MTBE was not reported in any of the soil samples submitted for chemical analysis. The <br /> laboratory results are summarized in Tables 2 and 3. Laboratory reports and chain-of- <br /> custody forms are included as Appendix B. <br /> Groundwater <br /> TPH in Water <br />' The groundwater samples from MWA and MW-3 were reported by the laboratory to <br /> contain non-detectable concentrations of TPH-g. <br /> The sample collected from MW-2 contained TPH-g at a concentration of 1.6 ppm. TPH-g <br />' and BTEX concentrations in groundwater are presented in Figure 5. The laboratory results <br /> are summarized in Tables 4 and 5. Laboratory reports and Chain-of-Custody forms are <br /> included as Appendix B. <br /> 9 197046a - Stockton <br />