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' 21 December 2001 <br /> AGE NC Project No 95-0143 <br />' Page 3 of 5 <br />' water was stored in 55-gallon DOT-approved drums on-site Field data and field logs are included <br /> m Appendix A <br />' <br /> 32 COLLECTION OF GROUND WATER SAMPLES <br />' Water samples were collected from each purged well using new, disposable bailers and, upon <br /> retrieval,were transferred into 40-m1 EPA-approved VOA vials contaming 0 5 ml 18%hydrochloric <br />' acid as a sample preservative The samples were labeled and transported under chain-of-custody, in <br /> a chilled container, to McCampbell Analytical, Inc (MAI), a DHS-certified laboratory, and were <br /> analyzed for <br />' Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Methods 5030/8015M <br />' 0 Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary butyl ether <br /> (MTBE) in accordance with EPA Method 8020/602 <br /> 10 Fuel oxygenates - di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), MTBE, <br /> tertiaryamyl methyl ether (TAME), tertiary butanol (TBA), ethanol and methanol in <br /> accordance with EPA Method 8260M <br /> 1 <br />' 3 3 WASTE DISPOSAL <br /> On 16 November 2001, approximately 385 gallons of non-hazardous purge water was pumped from <br />' on-site 55-gallon drums The purge water was generated during previous ground water monitoring <br /> events Pumping and disposal was completed by American Valley Waste Oil, Inc of Delhi, <br /> California The purge water was disposed at Seaport Environmental located in Redwood City, <br /> ICalifornia A copy of the waste disposal manifest is included in Appendix C <br /> 4.0. FINDINGS <br /> Ground water elevation was calculated and flow direction was Inferred from field data, the <br /> Ihydrocarbon impact to ground water was quantified from laboratory analysis <br /> Advanced GeoEnvironmeniai,Inc <br /> I <br />