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generated was collected and placed into a DOT approved 55-gallon storage drum The purge <br /> bailer was thoroughly cleaned with Alconox and triple rinsed with distilled water prior to its <br /> use in each well. <br />' After purging and stabilization of the evacuated water's parameters or removal of <br /> three well casing volumes of water (which ever came first), groundwater was collected from <br />' each well using disposable polyethylene bailers The samples were poured from the bailer <br /> into two 40 ml VOA vials and two 1 liter amber glass bottles, labeled, and stored in a chilled <br />' ice chest for transportation to AEN (a State certified analytical laboratory). Prior to sample <br /> collection in each well, bailer blanks were created by rinsing distilled water from the bailer <br /> into a 40 ml VOA sample vial Transport and handling of samples was performed under strict <br /> chain-of-custody protocol <br /> The samples were analyzed for BTEX and TPH-G using EPA Method 602 and 3510, <br /> respectively and TPH-E using EPA Method 3550/8015-Modified The travel blank was <br />' analyzed for BTEX and TPH The bailer blanks were designated to be analyzed for BTEX <br /> and gasoline only if moderate concentrations of these compounds were detected in that <br /> specific monitor well sample (consequently, the bailer blanks were not analyzed). <br /> Petroleum hydrocarbons within the diesel range were detected in MW-3 (TPH-d = <br /> 0 06 mg/L) and MW-5 (TPH-d = 0.1 mg/L). The detected diesel-range concentrations are <br /> lust above the reporting limit of 0 05 mg/1- Benzene (5 pg/L) was detected in the initial <br /> groundwater sample collected from MW-5 The reported benzene concentration is suspect <br />' since the reporting limit of this compound was raised to 5.0 pg/L due to matrix interference <br /> and due to the fact that no benzene was detected m any of the historical or recently collected <br /> soil samples on site. A re-analysis of this sample (still within the holding time from a <br /> preserved 1-liter sample that had approximately 5 ml of air bubbles head-space) was <br /> performed at a 1:2 dilution, as opposed to the 110 over-dilution initially used. The results of <br /> the re-analysis did not detect any benzene (<10 mg/L) The analytical results of the other <br /> wells were non-detect for all analytes tested. Hard copies of the analytical results from the <br /> most recent groundwater sampling are presented in Appendix D. <br /> To confirm the analytical benzene sample result from the October 18, 1994 sampling, <br /> Well MW-5 was purged and resampled on November 18, 1994. A total of 10-gallons of water <br /> 8 <br />