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' 3 3 bABORATORY ANALYSIS AND RESULTS <br /> Fourteen groundwater samples were submitted for analyses to Pace Analytical of <br /> Petaluma, California, a State of Cahfomia-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 /> o EPA 8015 modified - Total Petroleum Hydrocarbons as Diesel (TPH-D), <br />' 0 EPA 8020 - benzene, toluene, ethylbenzene, and total xylenes (BTEX), and methyl <br /> tertiary butyl ether (MTBE), <br /> O EPA 8260 -Volatile Organic Compounds (VOCs) <br /> Additionally, tertiary butyl alcohol (TBA), di-isopropyl ether (DIPE), Ethyl Tertiary Butyl <br /> Ether (ETRE), and Tertiary Methyl Ether (TAME) were analyzed None of these <br />' compounds were detected by EPA Method 8260 <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 ale tine reswts of the groundwater sampling <br /> All of the groundwater samples analyzed for TPH-D and MTBE were not detected <br /> TPH-G concentrations were detected in five of the fourteen groundwater samples <br />' (MW-13, MW-14, VW-1, VM-1, and VM-2) Detectable concentrations ranged from <br /> 590 to 48,000 micrograms per liter (pg/1) The concentrations have generally increased <br /> since the previous quarter sampling event <br /> 3 <br /> F Transfer%Rep-oMCALTRANS%Calty09717101 Nm497FIN <br />