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7 <br /> ,s <br /> 1 07 May 2004 <br /> AGE-NC Project No 98-0534 <br /> i <br />' Page 6 of 14, j <br />' 18 December 2000 - ground water levels were measured at MW-1, MW-2 and MW4 <br /> through MW-8 Ground water monitoring well MW-3 was not readily accessible during the <br />' sampling event Ground water levels averaged 10 5 feet below the tops of the well casings, ' <br /> ground water flow direction at the site was inferred to be flowing towards the south-southeast <br /> to southwest with a low hydraulic gradient of 0 003 feet/feet TPH-g was only detected in the <br /> ground water sample collected from well MW-6, at a concentration of 52 µg/1 TPH-d was <br /> detected in ground water samples from wells MW-2, MW-4, MW-6 and MW-7 at 74 µg/l, <br /> 110 µg/1,95 µg/1 and 67 µg/1,respectively Benzene was the only BTEX compound detected <br />' in ground water samples (MW-6 at 0 62 µg/1) MTBE was detected in the ground water <br /> samples from wells MW-4,MW-6,MW-7 and MW-8 at concentrations of 3 0µg/1,250µg/1, <br /> 2 2 µg/1 and 1 3 µg/l,respectively ETBE was detected at 11 µg/1 in sample MW-6 No other <br />' fuel oxygenates were detected in any of the samples No other petroleum hydrocarbon <br /> constituents or fuel oxygenating compounds were detected by the laboratory analysis <br /> Ground water elevations are summarized in Table 1, analytical results of ground water <br /> samples are summarized in Table 2 Results of the December 2000 ground water monitoring <br /> event were reported in Quarterly Report - 4th Quarter 2000, dated 15 May 2001, prepared <br /> by AGE J <br /> 29 May 2001 - ground water levels were measured at MW-1 and MW-3 through MW-8 <br />' Ground water monitoring well MW-2 was not readily accessible during the sampling event <br /> Groundwater levels averaged 10 5 feet below the tops of the well casings,ground water flow <br /> direction at the site was inferred to be flowing towards the south-southeast to southwest with <br />' a hydraulic gradient of approximately 0 007 feet/feet Well MW-4's ground water elevation , <br /> was out of range with the surrounding wells, therefore, the data from well MW-4 was not <br /> used to determine the ground water elevation contouring TPH-g was detected in the ground <br />' water samples collected from wells MW-4 and MW-6, at concentrations of 98 µg/l and <br /> 53 µg/1, respectively TPH-d was detected in samples from wells MW-4 and MW-6 at <br /> 120 µg11 and 59 µg/l, respectively Toluene was the only BTEX compound detected in the <br />' ground water samples (MW-4 at 0 98 µg/1) MTBE was detected in ground water samples <br /> -_ from wells MW-3,MW-4,MW-6 and MW.8,at concentrations of 3 0 gg/l, 18 gg/l, 190 µg11- <br /> and 40 µg/1, respectively ETBE was detected at 5 8 gg/l in sample MW-6 TBA was <br />' detected at 23 µg/1 in sample MW-6 No other fuel oxygenates were detected in any of the <br /> samples Ground water elevations are summarized in Table 1, analytical results of ground <br />' water samples are summarized in Table 2 Results of the May 2001 ground water monitoring <br /> event were reported in Quarterly Report - 2nd Quarter 2001, dated 06 September 2001, <br /> prepared by AGE <br /> I08 January 2002- ground water levels were measured at MW-1 and MW-3 through MW-8 <br /> Ground water monitoring well MW-2 was not readily accessible or located during the <br /> IAdvanced GeoEnvi ron mental,Inc <br /> I - , <br />