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3.0 Results 3.1 Laboratory Results ' The laboratory results are summarized in Tables 2 and 3 for the soil and water samples, respectively Laboratory analysis reports and chain-o€-custody records are included as Appendix C 3.1.1 Laboratory Results of Soil Samples The laboratory analysis of soil samples from MW-8 at a depth of 15 feet bgs indicated low concentrations (0 012 to 0 23 milligrams per kilogram [mg/kg]) of BTEX Lead was detected at 6 7 mg/kg in the 5 feet bgs sample Results of analysis at other depths were below detection limits The laboratory analysis of soil samples from MW-9 (at depths of 0 5, 5, 10, and 115 feet bgs) did not reveal detectable levels of TPH-g or BTEX 3.1.2 Laboratory Results of Groundwater Samples The laboratory analysis of the groundwater from the seven HydroPunch 11® samples and the seven groundwater monitoring well samples indicated the presence of TPH-g and BTEX compounds The groundwater samples from HP-1, HP-4, HP-5, MW-1, and MW-8 revealed TPH-g concentrations ranging from 1,200 micrograms per liter (ug/L) to 45,000 µg/L., and BTEX concentrations ranging from 0 5 µg/L (benzene) to 7,600µg/L (toluene) The laboratory analysis of groundwater samples ' from MW-2, MW-3, MW-4, MW-6, MW-9, HP-2, HP-3, HP-6, and HP-7 did not reveal TPH-g or BTEX compounds The groundwater sample from MW-9 was also analyzed for lead but no detectable concentrations were found The duplicate groundwater sample from MW-9 did not reveal TPH-g or BTEX in excess of detection limits The split groundwater sample from MW-8 indicated similar levels of TPH-g, toluene, ethylbenzene, and total xylenes (within an order of magnitude), but the level of benzene differed from the original sample by a factor of 10 (160 E.rg/L in the original sample and 1,600 µg/L in the split sample) The District's laboratory had difficulty determining the concentration of benzene in this sample and believe the reported concentration (160 µg/L) to be suspect The split sample result of 1.600 µg/L has been reported on Table 3 93822 Bast Bay Municipal Utility District 40429500 asa 8 Stockton Svc Ctr -Site Assessment/Remedial Options