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S E C 0 R <br />' Conceptual Site Model <br /> Chevron Service Station #9-6171 <br /> March 25, 2005 <br />' Page 8 <br /> than In site soils MtBE was not detected in any other soil samples collected from these <br /> borings The historical soil sampling results are summarized In Table 4 <br /> On June 12, 2001, the newly-installed monitoring wells were developed and sampled The <br /> groundwater samples collected were analyzed for TPHg, benzene, ethylbenzene, total <br /> xylenes, and the fuel oxygenates dl-isopropyl ether (DIPE), ethyl tert-butyl ether (EtBE), <br /> ethylene dibromide (EDB), tertiary amyl methyl ether (TAME), tertiary butyl alcohol (TBA), <br /> I 1,2-dichloroethane (1,2-DCA), methanol and ethanol by EPA Methods 8260 and 8015 <br /> TPHg was detected ranging from below method detection limits to 130 parts per billion <br /> (ppb) MtBE was detected ranging from below method detection limits to 1,200 ppb There <br /> was no BTEX or VOCs detected in any of the groundwater samples <br /> I <br /> I <br /> I <br /> I <br /> N IFdes\Projects\Chevron\Retadl#9-61711site Conceptual Model\FINAL_CSM doc <br /> I <br />