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' 27 July 2000 <br /> • AGE-NC Project No 95-0167 <br /> ' Page 2 of 4 <br /> ' container and transported under chain-of-custody to McCampbell Analytical Inc (MAI), and were <br /> analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified, <br /> • Volatile aromatic hydrocarbons benzene, toluene, ethylbenzene and total xylenes (BTEX) <br /> with methyl tertiary-butyl ether(MTBE) in accordance with EPA Method 8020, and <br /> • Oxygenated compounds di-isopropyl ether(DIPE),ethyl tertiary-butyl ether(ETBE),methyl <br /> ' tertiary-butyl ether(MTBE), tertiary-amyl methyl ether(TAME) and tertiary butanol (TBA) <br /> in accordance with 8260-Modified, respectively <br /> 1 <br /> 3.0. FINDINGS <br /> Ground water flow direction, elevation, and gradient were determined from data collected in the <br /> field, ground water levels were within the screen interval of wells MW2 through MW4 Ground <br /> , . water was approximately 2 5 feet above the top of the screen interval in well MW 1 The hydrocarbon <br /> impact to ground water was quantified by the laboratory data obtained from the ground water <br /> samples <br /> 3 2 GROUND WATER GRADIENT AND FLOW DIRECTION <br />' The elevation of ground water in each well was calculated by subtracting the depth togr ound water <br /> from the surveyed well casing elevations (Table 1) <br />' For the June 2000 sampling event depths to ground water ranged from 12 58 feet to 12 78 feet below <br /> the tops of the well casings Ground water elevations at the site ranged from 3 58 feet to 3 72 feet <br />' below mean sea level (MSL) <br />' The ground water flow direction was determmed by plotting and contouring the ground water <br /> elevation data The ground water at the site was determined to be flowing to the northeast under an <br /> average gradient of 0 0016 ft/ft Figure 3 illustrates the contoured ground water elevations as <br />' measured on 12 June 2000 <br />