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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 />' Q 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, Total Xylenes, and Methyl tert Butyl <br /> Ether (BTEX) and (MTBE), <br /> EPA 8260 — Volatile Organic Compounds (VOCs), <br /> 1 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 /> ' r results for groundwater samples is resented in Table 1 A <br /> A summary of the laboratory sus g p p <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 /> TPH-D concentrations were detected in five of the fourteen groundwater samples <br /> (MW-6, MW-7, MW-8, VW-1, and VW-2) Detectable concentrations ranged from 79 <br /> to 570 micrograms per liter (ug/1) The concentrations are relatively unchanged since <br /> the previous quarter's sampling event <br /> TPH-G concentrations were detected in seven of the fourteen groundwater samples <br />' (MW-1, MW-2, MW-3, MW-5 MW-6, VW-1, and VW-2) Detectable concentrations <br /> ranged from 60 to 10,000 ugll The concentrations have typically decreased since the <br /> previous quarter's sampling event <br /> 1 <br /> F TransfertReporhGALTRANSIC aIty0971710171gm497hn <br />