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I <br />' 02 February 2000 <br /> i AGE-NC Project No 97-0249 <br />' Page 3 of 5 <br />' at the site increased an average 2 76 feet between the August and the November 1999 ground water <br /> monitoring events The ground water elevation data for MW-1 through MW-6 during the November <br /> 1999 ground water monitoring event is depicted in Figure 3 <br />' Ground water flow direction for the area bound by wells MW-1 through MW-6 was generally toward <br /> the east at a gradient of 0 0009 ft/ft, or approximately 5 feet per mile (Figure 3), <br /> Due to the low gradient at the site, slight variations in ground water measurements or changes of <br /> recharge/discharge of the local ground water could greatly modify ground water flow direction <br /> 1 <br /> 3 2 LABORATORY RESULTS OF GROUND WATER SAMPLES <br />' A total of six ground water samples were submitted to a DHS-certified laboratory In November <br /> P ry <br /> 1999 TPH-g was detected in water samples collected from wells MW-1, MW-2, MW-3,MW-5 and <br /> MW-6 at concentrations ranging up to 27,000 micrograms per liter(µg/1), TPH-d was detected in <br /> water samples collected from the same wells at concentrations ranging up to 3,700 µg/I, however, <br /> the laboratory reported that the diesel chromatograms for all the samples, except the sample collected <br /> from MW-5, lacked typical diesel characteristics <br /> BTEX compounds were detected in ground water samples collected from wells MW-1,MW-2,MW- <br /> 3,MW-5 and MW-6 at concentrations ranging as high as 5,900µg/l (benzene, MW-3) MTBE was <br /> detected, utilizing EPA Method 8020, in the sample collected from MW-4 at a concentration of 51 <br /> µg/1 <br /> MTBE was detected in ground water samples collected from wells MW-1,MW-2,MW-4 and MW-6 <br /> utilizing EPA Method 8260M at concentrations as high as 57 µg/l No other fuel oxygenates were <br /> detected above laboratory reporting limits <br /> MTBE was not detected in the November or December 1999 samples collected from the domestic <br /> drinking water well located in a southwest section of the site utilizing EPA Method 8260 <br /> Analytical results of the ground water samples are summarized in Table 2 The laboratory reports <br /> (Castle Analytical Laboratories Reference No 2622 and McCampbell Analytical Inc I D No 24614, <br /> 26281 through 26287 and 27376) and chain-of-custody forms are presented in Appendix B <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based upon data collected during the November 1999 monitoring, AGE concludes <br /> Advanced GcoEnvironmental,Inc <br />