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1 <br /> discarded and recollected Sample containers were sealed in a plastic bag placed with ice in an insulated <br /> chest, and logged on a chain-of-custody form for delivery to the analytical laboratory <br /> The pump used to purge and sample the wells was thoroughly cleaned prior to each use by placing it into a <br />' container of tap water with non-phosphate detergent and washing the outside of the pump The disposable <br /> hose was discarded after purging each well <br /> Purge water from monitor well MW-3A,MW4,MW-5,MW-6,MW-7 and MW-9 was stored in the holding <br /> tank Purge water from MW-2 and MW-2A was stored in 55-gallon drums in the garage located at 100 N <br />' Hunter Street and meets the requirements for transfer and disposal at a licensed treatment facility <br />' The groundwater samples were analyzed by EPA Method 8020 for BTEX and by EPA Method 8015M for <br /> TPH-G 1n addition the holding tank water sample was analyzed for MTBE by EPA Method 8021 <br /> Groundwater sample analyses were performed by Sequoia Analytical Laboratory in Sacramento,California <br /> 3.0 MONITORING RESULTS SUMMARY <br /> 3 1 GROUNDWATER PHYSICAL CHARACTERISTICS AND POTENTIOMETRIC <br /> SURFACE ELEVATIONS <br /> Table 3-1 presents a summary of groundwater parameters, depths and elevations Since groundwater <br /> elevations were last taken in September 2003, groundwater elevations have decreased by an average of 0 10 <br /> ft <br />' LXPROJECTSISANJOQUiSA\IQO;Rff%VPD 3 <br />