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1 <br />' 21 December 2001 <br /> AGE-NC Project No 99-0657 <br />' Page 2 of 4 <br />' 40-m1 VOA vials containing 0 5 ml 18% hydrochloric acid as a sample preservative After <br /> collection, the samples were properly labeled, placed in a chilled container and transported under <br /> chain-of-custody to McCampbell Analytical Inc (MAI)for analysis The samples were analyzed for <br />' Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) In <br /> accordance with EPA Methods 50301355018015-modified for fuels, <br />' Benzene,toluene,ethylbenzene and xylenes(BTEX)and methyl tertiary-butyl ether(MTBE) <br /> In accordance with EPA Method 8020, <br />' Volatile organic compounds and fuel oxygenates -MTBE, di-isopropyl ether (DIPE), ethyl <br /> tertiary-butyl ether (ETBE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), <br /> 1,2-dichloroethane (1,2-DCA) and ethylene dibromide (EDB) In accordance with EPA <br />' Method 8260 Modified <br />' 3.0. FINDINGS <br />' . Ground water elevation, flow direction, and gradient were determined from field data collected on <br /> 19 October 2001, the contaminant Impact to ground water was assessed from the laboratory <br /> analytical data <br /> 3 1 GROUND WATER GRADIENT AND FLOW DIRECTION <br />' At the time of the October 2001 sampling event, depths to ground water ranged from 32 32 feet to <br /> 33 41 feet below the tops of the well casings Relative ground water elevations at the site ranged <br /> from 8 77 feet above mean sea level (MSL) in well MW4 to 9 03 feet above MSL in well MW2 <br /> (Table 1) During this monitoring event, the ground water levels In the wells were approximately <br /> 2 32 to 8 32 feet below the tops of the well screens, Indicating that the wells are screened properly <br /> to yield representative shallow ground water samples The relative ground water elevation at the site <br /> increased an average of 0 3 8 feet between the July 2001 and October 2001 monitoring events <br /> Ground water was Inferred to be flowing toward the south-southwest under an average gradient of <br /> 0 004 feet/feet Figure 3 Illustrates the contoured ground water elevations as measured on 19 October <br /> I2001 <br /> IAdvanced GePEnvironmental,Inc <br />