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3 3 LABORATORY ANALYSIS AND RESULTS <br /> Fourteen groundwater samples were submitted for analyses to Pace Analytical of Long <br /> Beach, California, a State of California-certified hazardous waste analytical laboratory <br /> The samples were analyzed by the following methods <br /> o EPA 8015 modified - Total Petroleum Hydrocarbons as Gasoline (TPH-G), <br /> EPA 8015 modified - Total Petroleum Hydrocarbons as Diesel (TPH-D), <br /> 0 EPA 8020 - Benzene, Toluene, Ethylbenzene, and total Xylenes (BTEX), and, <br /> EPA 8260 - Volatile Organic Compounds (VOCs) including Methyl Tertiary Butyl Ether <br /> (MTBE) <br /> Additionally, TertiaryBut I Alcohol (TBA), Di-Isopropyl Ether (DIPE), 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 /> copy of the laboratory reports and chain-of-custody records are presented in Appendix B <br /> The following are the results of the groundwater sampling <br /> o None of the groundwater samples analyzed contained detectable concentrations of <br /> MTBE <br /> a None of the groundwater samples analyzed contained detectable concentrations of <br /> TPH-D <br /> 0 TPH-G concentrations were detected in four of the fourteen groundwater samples <br /> (MW-13, VW-1, VM-1, and VM-2) Detectable concentrations ranged from 540 to <br /> 19,000 pg/l The concentrations have generally decreased since the previous quarter <br /> sampling event <br /> o BTEX concentrations were detected in five of the fourteen groundwater-monitoring <br /> wells (MW-12, MW-13, VW-1, VM-1, and VM-2) Detectable concentrations of benzene <br /> ranged from 710 to 4,200 pgll The concentrations have generally decreased since the <br /> previous quarter sampling event <br /> 3 <br /> F TransferlRepartlCALTRANS4Ca1ty0971710175gm198FIN <br />