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I cn <br /> V <br /> Canteen Facility Scptember 28, 2001 <br /> Quarterlyr un w t nrtonn Rel2ort Page 2 <br />' • Sampled and analyzed groundwater for <br /> • total petroleum hydrocarbons, gasoline range (TPHg) (method 8015 modified), <br /> • benzene, toluene, ethylbenzene, and xylenes (BTEX) (method 8020), and <br /> • gasoline oxygenates including t-Butanol (TBA), Methyl-t-Butyl Ether (MTBE), Di- <br /> isopropyl Ether (DIPE), Ethyl-t-Butyl Ether (ETBE), t-Amyl Methyl Ether (TAME), <br /> I1,2-dichloroethane (1,2-DCA) and ethylene dibromtde (EDB) (method 8260B) <br /> • Prepared this 2001 Third Quarterly Monitoring Report summarizing the findings of the <br />' quarterly activities <br /> This report presents field observations, results, conclusions and recommendations for additional <br />' work AES has prepared this report in accordance with generally accepted environmental <br /> practice <br />' SITE INVESTIGATION & RESULTS <br /> MONITOR WELL SAMPLING <br /> Upon arrival at the Site, the well caps were opened to allow the wells to achieve static <br />' conditions The wells were then gauged to measure groundwater elevations (Table 1) and <br /> purged with a submersible Grundfos® pump until three casing volumes of groundwater had been <br /> recovered Field measurements for conductivity, pH and temperature were taken during purging <br />' to ensure the collection of formation groundwater Groundwater samples were collected from <br /> the seventeen monitor wells on August 15, 2001 <br /> t During purging of the monitor wells, neither non-aqueous phase liquid (NAPL) nor hydrocarbon <br /> sheen were noted on the purged groundwater Gasoline odors were detected in monitor wells <br /> MW-3A, MW-5, MW-13 and MW-13B <br />' AfterP urging, samples were collected using pre-cleaned disposable bailers and then transferred <br /> to laboratory provided containers for analysis of TPH(g), BTEX, TBA, MTBE, DIPE, ETBE, <br />' TAME, 1,2-DCA and EDB The samples were transported under chain-of-custody using an <br /> overnight delivery service to McCampbell Analytical, Inc , of Pacheco, California, a California <br /> accredited analytical laboratory <br />