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' 08 August 2005 • AGE-NC Project No 98-0534 ' Page 6 of 15 3 7µg/1, 13 µg/l,350 µg/1 and 2 2 µg/l,respectively ETBE was detected at 24 µg11 in sample MW-6 and TBA was detected at 21 µg/1 in sample MW-4 No other petroleum hydrocarbon constituents or fuel oxygenating compounds were detected during the laboratory analysis The results of the monitoring well survey and ground water elevations are summarized in ' Table 3, analytical results of ground water samples are summarized in Table 4 Results of the August 2000 ground water monitoring event were reported in Quarterly Report - 3rd Quarter 2000, dated 09 October 2000, prepared by AGE • 18 December 2000 - ground water levels were measured at MW-1, MW-2 and MW-4 through MW-8 Ground water monitoring well MW-3 was not readily accessible during the ' sampling event Ground water levels averaged 10 5 feet below the tops of the well casings, ground water flow direction at the site was inferred to be flowing towards the south-southeast to southwest with a low hydraulic gradient of 0 003 ft/ft TPH-g was only detected in the ' ground water sample collected from well MW-6, at a concentration of 52 µg/1 TPH-d was detected in ground water samples from wells MW-2, MW-4, MW-6 and MW-7 at 74 µg/l, 110 µg/i,95 µg/l,and 67 µg/l,respectively Benzene was the only BTEX compound detected in ground water samples (MW-6 at 0 62 µg/1) MTBE was detected in the ground water samples from wells MW-4,MW-6,MW-7 and MW-8 at concentrations of 3 0µg11,250µg11, t 2 2 µg/1 and 1 3 µg11,respectively ETBE was detected at 11 µg/1 in sample MW-6 No other fuel oxygenates were detected in any of the samples No other petroleum hydrocarbon constituents or fuel oxygenating compounds were detected by the laboratory analysis Ground water elevations are summarized in Table 3, analytical results of ground water samples are summarized in Table 4 Results of the December 2000 ground water monitoring event were reported in Quarterly Report- 4th Quarter 2000, dated 15 May 2001, prepared ' by AGE • 29 May 2001 - ground water levels were measured at MW-1 and MW-3 through MW-8 t Ground water monitoring well MW-2 was not readily accessible during the sampling event Ground water levels averaged 10 5 feet below the tops of the well casings,ground water flow direction at the site was inferred to be flowing towards the south-southeast to southwest with ' a hydraulic gradient of approximately 0 007 ft/ft Well MW-4's ground water elevation was out of range with the surrounding wells, therefore, the data from well MW-4 was not used to determine the ground water elevation contouring TPH-g was detected in the ground water ' samples collected from wells MW-4 and MW-6, at concentrations of 98 µg/1 and 53 µg/1, respectively TPH-d was detected in samples from wells MW-4 and MW-6 at 120 µg11 and 59 µg/1, respectively Toluene was the only BTEX compound detected in the ground water ' samples(MW-4 at 0 98µg/1) MTBE was detected in ground water samples from wells MW- 3, MW-4, MW-6 and MW-8 at concentrations of 3 0 µg/l, 18 µg11, 190 µg11 and 4 0 µg/l, respectively ETBE was detected at 5 8 µg11 in sample MW-6 TBA was detected at 23 µg/1 ' in sample MW-6 No other fuel oxygenates were detected in any of the samples Ground • water elevations are summarized in Table 1, analytical results of ground water samples are ' Advanced GeoEn`nronmental,Inc