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! bubbles were discarded and recollected Sample containers were sealed in a plastic bag,placed with ice in <br /> an insulated chest, and Iogged on a chain-of-custody form for delivery to the analytical laboratory <br /> The <br /> pump used to purge and sample the wells was thoroughly cleaned prior to each use by placing At 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, MW-4, MW-5, MW-6, MW-7, and MW-9 was stored in the <br /> holding tank Purge water from MW-2 and MW-2A was stored in 55-gallon drums in the garage located at <br />' 100 N 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 In 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 <br /> MONITORING RESULTS SUMMARY <br />! 3.1 GROUNDWATER PHYSICAL CHARACTERISTICS AND POTENTIOMETRIC <br /> SURFACE ELEVATIONS <br />!i Table 3-1 presents a summary of groundwater parameters, depths and elevations Since groundwater <br /> elevations were last taken in March 2003, groundwater elevations have decreased by an average of 0 065 <br />! ft <br />! <br /> LIPROJEMISANJOQMAUQ03"T WPI) 3 <br />