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3 3 LABORATORY ANALYSIS AND RESULTS <br /> ' Fourteen groundwater samples were submitted for analyses to Pace Analytical of <br /> Petaluma, California, a State of California-certified hazardous waste analytical laboratory <br /> The samples were analyzed for the following <br /> o EPA 8015 modified - Total petroleum hydrocarbons as Gasoline (TPH-G), <br /> EPA 8015 modified - Total Petroleum Hydrocarbons as Diesel (TPH-D), <br /> o EPA 8020 - benzene, toluene, ethylbenzene, and total xylenes (BTEX), and methyl <br /> tertiary butyl ether (MTBE), <br /> EPA 8260 -Volatile Organic Compounds (VOCs) <br /> Additionally, tertiary butyl alcohol (TBA), di-isopropyl ether (DIPS), Ethyl Tertiary Butyl <br /> Ether (ETBE), and Tertiary Methyl Ether (TAME) were analyzed EPA Method 8260 <br /> detected none of these compounds <br /> A summary of the laboratory results for groundwater samples is presented in Table 1 A <br /> 1 copy of the laboratory reports and chain-o#-custody records are presented in Appendix B <br /> The following are the results of the groundwater sampling <br /> 0 None of the groundwater samples analyzed contained detectable concentrations of <br /> MTBE with the exception of the sample from well VM-1 (25pg11) <br /> ' o TPH-G concentrations were detected in seven of the fourteen groundwater samples <br /> (MW-12 through MW-14, MW-20, VW-1, VM-1, and VM-2) Detectable concentrations <br /> ranged from 53 to 34,000 pgll The concentrations have generally decreased since the <br /> ' previous quarter sampling event <br /> 3 <br /> F TransfeARepoMCALTRANS1Cafty0971710171gm198FIN <br />