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1 <br /> 07 August 2002 <br /> AGE-NC Protect No 98-0465 <br /> ' Page 2 of 4 <br /> ' sample was transferred into three 40-m1 VOA vials containing 0 5 ml 18% hydrochloric acid as a <br /> sample preservative and one 1-liter amber bottle with no sample preservative After collection, the <br /> samples were properly labeled,placed in a chilled container and transported under chain-of-custody <br /> to McCampbell Analytical, Inc (MAI) for analysis The samples were analyzed for <br /> G Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) In <br /> accordance with EPA Method 8015 Modified <br /> Benzene,toluene,ethylbenzene and xylenes(BTEX)and methyl tertiary-butyl ether (MTBE) <br /> ' in accordance with EPA Method 8021B, and <br /> The fuel oxygenates MTBE, di-isopropyl ether (D1PE), ethyl tertiary-butyl ether (ETBE), <br /> tertiary-amyl methyl ether (TAME), and tertiary butanol (TBA) in accordance with EPA <br /> Method 8260B <br /> 3.0. FINDINGS <br /> lie Ground water elevation, flow direction and gradient were determined from field data collected on <br /> 28 June 2002, the contaminant impact to ground water was quantified by the laboratory analytical <br /> data <br /> 1 <br /> 3 1 GROUND WATER GRADIENT AND FLOW DIRECTION <br /> At the time of the June 2002 sampling event, depths to ground water ranged from 10 42 feet to <br /> 11 46 feet below the tops of the well casings Ground water elevations at the site ranged from <br /> ' 7 68 feet below mean sea level(MSL)in well MW4 to 7 82 feet below MSL in well MW2(Table 1) <br /> The relative ground water elevation at the site decreased an average of 1 4 feet between the January <br /> ' 2002 and June 2002 monitoring events <br /> Ground water flow radiates outward between northwest and northeast at an average gradient of <br /> ' 0 002 feet/feet Figure 3 illustrates the contoured ground water elevations as measured on <br /> 28 June 2002 <br /> ' During this monitonng event, the ground water level in the wells was approximately 5 4 to 6 5 feet <br /> below the tops of the well screens, indicating that the wells are screened properly and yield <br /> representative shallow ground water samples <br /> 1 Advanced GeoEnvi ro nmental,Inc <br /> 1 <br />