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Following purging and recharge, groundwater samples were collected from the wells using dedicated and disposable sampling bailers Irrigation Well #2 was allowed to flow at the wellhead until the downhole pump was automatically activated A groundwater sample was collected directly at the wellhead through a sample port The groundwater samples were contained in laboratory-supplied containers, and transported in an iced cooler with chain-of-custody documentation to Kiff Analytical, LLC (Kiff), a state of California certified analytical laboratory (#2236) Kiff analyzed the groundwater samples for TPH-as-gasoline, benzene, toluene, ethylbenzene, xylenes (BTEX), MTBE, di-isopropyl ether (DIPE), ethyl-t-butyl ether (ETBE), tert-amyl methyl ether (TAME), tert-butanol (TBA) and 1,2- DCA by EPA Method 8260B Analytical results of the groundwater samples indicate that dissolved concentrations of gasoline hydrocarbons continue to exist to groundwater beneath the site Consistent with previous quarterly groundwater sample analytical results, TPH-as-gasoline and the BTEX compounds were not detected in any of the groundwater samples In both sampling events, MTBE was detected in five of the wells, at a maximum concentration of 390 µg11 at MW-7 1,2-DCA was detected in five wells on December 18, 2003 and in six wells on March 25, 2004, at a maximum concentration of 26 µg11 at MW-5 Groundwater from Irrigation Well##2 did not contain detectable concentrations of any of the gasoline compounds The cumulative analytical results are summarized in Table 2, and the laboratory reports and chain-of-custody documents are included in Appendix A r r � r r r r r6 • r