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' 28 June 2004 <br /> . AGE-NC Project No 97-0300 <br />' Page 3 of 5 <br />' 3.0. FINDINGS <br /> Ground water elevation, flow direction and gradient were determined from field data collected on <br />' 22 January 2004, the contaminant impact to ground water was assessed from the ground water <br /> laboratory data <br /> 3 1 GROUND WATER ELEVATION AND GRADIENT <br />' The depths to ground water in wells MW-1, MW-2 and MW-3 were measured between 51 10 and <br /> 51 60 feet below the tops of the well casings Ground water elevations at the site were calculated to <br /> be between 33 85 feet and 33 94 feet below mean sea level, ground water elevations are depicted in <br /> I Figure 3 Ground water elevations have decreased at the site an average 7 04 feet between the March <br /> 2001 and the January 2004 ground water monitoring events On 22 January 2004,the general ground <br /> water flow direction at the site was inferred to be toward the northwest at an estimated gradient of <br />' 0 002 ft/ft or less, approximately 11 feet per mile (Figure 3) <br />' . 3 2 LABORATORY RESULTS OF GROUND WATER SAMPLES <br />' TPH-g, TPH-d, TPH-mo and BTEX constituents were not detected from the laboratory analysis <br /> MTBE was detected (by EPA Method 8020) from wells MW-1 and MW-2 at concentrations of <br /> I 0 6 µg/1 and 0 75 µg/l,respectively,MTBE was confirmed(utilizing EPA Method 8260)from well <br /> MW-2 at a concentration of 0 55 gg/l <br />' No other constituents of concern were detected from the laboratory analysis Analytical results of <br /> the ground water samples are summarized in Tables 2 and 3 The laboratory report(Castle Analytical <br /> Laboratory Reference No 6565),quality assurance and quality control reports and chain-of-custody <br />' forms are presented in Appendix B <br /> I <br /> I <br /> Advanced GeoEnvlronmentnl,Inc <br /> I <br />