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I29 March 2002 <br /> AGE-NC Project No 96-0254 <br /> Page 2 of 5 <br /> Temperature,pH and conductivity were measured at one-or two-gallon intervals The ground water <br /> parameters were measured with an Oakton water analyzer Logs of the field data are included in <br /> Appendix A Purged water was stored on-site in labeled DOT-approved 55-gallon drums <br /> 2 2 COLLECTION AND ANALYSIS OF GROUND WATER SAMPLES <br /> Water samples were collected from each well using a new disposable plastic bailer Water samples <br /> collected from wells MW-i A,MW-2A,MW2B and MW3 through MW-7 were transferred into one <br /> I 1-liter amber bottle and the water samples from well MW-1 B was transferred into two 1-liter amber <br /> bottles all without a sample preservative Additionally, water samples from each well were <br /> transferred into three chilled 40-m1 volatile organic analysis (VOA) vials containing 0 5 ml 18% <br /> hydrochloric acid (HCI) as a sample preservative After collection, the samples were labeled and <br /> placed in a chilled container for transportation under chain-of-custody to McCampbell Analytical, <br /> Inc (MAI), a California Department of Health Services (DHS)-certified analytical laboratory The <br /> ground water samples were analyzed for <br /> • • Total petroleum hydrocarbons quantified as gasoline and as diesel (TPH-g and TPH-d) in <br /> accordance with EPA Method 8015 Modified <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary-butyl ether <br /> I (MTBE) in accordance with EPA Method 8020 <br /> • Fuel additives, including, di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), <br />' MTBE,tertiary-amyl methyl ether(TAME),tertiary-butyl alcohol(TBA), 1,2-dichloroethane <br /> (1,2-DCA)and ethylene dibromide(EDB) in accordance with EPA Method 8260 Modified <br /> The sample collected from MW-1B was transported to BioJet Laboratory in Ione and analyzed for <br /> physicochemical properties and microbiological enumeration <br /> 3.0. FINDINGS <br /> Ground water elevation, flow direction, and gradient were determined from field data collected on <br /> 23 January 2002, the contaminant impact to ground water was assessed from the laboratory <br />' analytical data obtained from the sampling event <br /> I <br />' Advanced Geo Environmental Inc <br /> I <br />