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06 July 1999 <br /> • AGE-NC Protect No 95-0173 <br />' Page 4 of 6 <br /> reporting limits <br />' <br /> Analytical results of the ground water samples are summarized In Table 2 The laboratory reports <br /> (Castle Analytical Laboratory Reference No 2250 and McCampbell Analytical Inc 1 D No 10462 <br /> through 10474) and chain-of-custody forms are presented In Appendix B <br />' 4.0. SUMMARY AND CONCLUSIONS <br />' • Ground water flow direction for the area bound by wells MW-1 through MW-4, MW-6, <br /> MW-7, MW-8 and MW-12 was generally toward the east at a gradient of 0 002 ft/ft, ground <br /> water flow direction for the area bound by wells MW-4,MW-5, MW-7, MW-9, MW-10 and <br />' MW-11 was generally toward the east-northeast at a gradient of 0 002 ft/ft <br /> • Ground water elevation at the site increased an average 1 84 feet between the January and <br /> April 1999 ground water monitoring events, generally, a long term trend of increasing <br /> ground water elevations is indicated by data obtained at the site since August 1996 <br />'• • Ground water was approximately 6 feet above the screened intervals in monitoring wells <br /> MW-1, MW-2, MW-3 and MW-4, ground water was approximately 26 to 36 feet above the <br /> screen intervals at AW-113 and AW-2B, therefore these wells are "drowned", and do not <br /> yield samples representative of shallow ground water <br /> C TPH-g was detected In water samples collected from wells MW-1 through MW-4, MW-6, <br />' MW-9, MW-10, VW-1, AW-1B and AW-213 at concentrations ranging up to 270,000 kg/l <br /> • TPH-d was detected in water samples collected from wells MW-1 through MW-4, MW-6, <br /> MW-7, MW-8, MW-9, MW-10, MW-12, VW-1, AW-1B and AW-2B at concentrations <br /> ranging up to 14,000 µg/1, however, the laboratory reported that the diesel chromatograms <br /> for the samples did not have typical diesel characteristics <br />' • BTEX compounds were detected In ground water samples collected from wells MW-1 <br /> through MW-4, MW-6, MW-7, MW-8, MW-9, MW-10, VW-1, AW-1B and AW-2B at <br /> concentrations ranging as high as 71,000 4g/1 The greatest benzene concentration was <br /> detected from well VW-1 at a concentration of 18 000 ug/l <br /> • MTBE was detected in ground water samples collected from wells MW-2, MW-3, and MW- <br /> 4 utilizing EPA Method 8260 at concentrations as high as 69µg/l <br /> • DIPE was detected in a ground water sample collected from well MW-4 at a concentration <br /> of 7µg/l <br /> Advanced GeoEn%iron mental,Inc <br />