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1 <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-9 was stored in the holding tank Purge water from MW-2 and MW-2A <br /> was stored in 55-gallon drums in the garage located at 100 N Hunter Street and meets the requirements for <br /> transfer and disposal at a licensed treatment facility <br /> The groundwater samples were analyzed by EPA Method 5020 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 performedby 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 June 2003, groundwater elevations have decreased by an average of 1 13 ft <br /> 1 <br /> i <br /> 1 <br />' L1PR01ECfSISAN10Q111SA11Q03RPT\%rPD 3 <br />