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17 October 2003 <br /> I AGE-NC Project No 02-0964 <br /> Page 3 of 8 <br /> • CPT-2 was sampled between 93 and 97 feet bsg,between 120 and 124 feet and between 146 <br /> and 150 feet bsg and between 181 and 185 feet bsg, <br /> • CPT-3 was sampled between 56 and 60 feet bsg, between 104 and 107 feet bsg, between <br /> 120 and 124 feet bsg and between 143 and 147 feet bsg, <br /> • CPT-4 was sampled between 101 and 105 feet bsg, between 120 and 124 feet bsg and <br /> between 141 and 145 feet bsg and <br /> • CPT-5 was sampled between 56 and 60 feet bsg,between 104 and 108 feet bsg and between <br /> I146 and 1 <br /> Soil samples were collected from boring CPT1 at 55 and 78 feet bsg <br /> Following sample collection, the samples were placed in laboratory-supplied containers, properly <br /> labeled and transported under chain-of-custody to to Cal Tech Environmental Laboratories, Inc <br /> (CTEL) of Paramount, a State of California Department of Health Services (DHS)-certified <br /> laboratory(#2424) All samples were analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline and 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 /> r (MTBE) in accordance with EPA Method 8260-Modified, and <br /> • The fuel additives di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), methyl <br /> tertiary-butyl ether (MTBE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), <br /> ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) ethanol and methanol in <br /> accordance with EPA Method 8260-Modified <br /> All rinseate generated during drilling activities was containerized in properly labeled DOT-approved <br /> 55-gallon drums, and stored on-site in an area lacking public access The twinned soil borings were <br /> backfilled over their entire depths with a portland cement grout mix <br /> 3.0. FINDINGS <br /> I The computer-generated CPT lithologic logs were integrated with previous subsurface soil <br /> descriptions to construct the subsurface geological model, the hydrocarbon impact to ground water <br /> and soil was quantified by laboratory analysis of the grab ground water and soil samples, as <br /> Ipresented below <br /> IAdvanced GcoEnvironmental,Inc <br />