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' 06 August 2002 <br /> • AGE-NC Project No 95-0111 <br />' Page 3 of 4 <br /> 3 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br />' TPH-g and BTEX compounds were not detected at or above laboratory reporting limits in the ground <br /> water samples TPH-d was detected in the ground water samples collected from wells MW-4 and <br />' MW-5 at concentrations of 3,200 µg/1 and 530 µg/l, respectively TPH-d was not analyzed in the <br /> sample collected from well MW-2, due to the sample container rupturing in transport to the <br />' laboratory <br /> MTBE was detected utilizing EPA method 8260 in the ground water samples collected from MW-1, <br />' MW-4,MW-7 and MW-8 at concentrations of 42 µg/1, 10 µg/1,0 81 µg/1 and 12 µg/1,respectively <br /> No other fuel additives were detected at or above laboratory reporting limits in the ground water <br /> samples analyzed <br />' Analytical results of the ground water samples are summarized in Tables 2 and 3 The laboratory <br /> report(MAI Laboratory I D Nos 0206381-001 through 0206381-008),quality assurance and quality <br />' control report and chain-of-custody forms are included in Appendix B <br />' . 4 0. SUMMARY AND CONCLUSIONS <br /> Based on the findings from this Investigation, AGE concludes <br />' • The northerly ground water flow direction Inferred from data collected during this <br /> monitoring event is consistent with ground water flow directions determined during past <br />' monitoring events at the site <br /> • TPH-d was detected In the ground water samples collected from wells MW-4 and MW-5 at <br />' concentrations of 3,200 gg/l and 530 µg/l,respectively TPH-g and BTEX compounds were <br /> not detected at or above laboratory reporting limits in the ground water samples <br />' • MTBE was detected by EPA Method 8260 in the samples collected from MW-1, MW-4, <br /> MW-7 and MW-8 at concentrations of 42 µg/l, 10 µg/1, 0 81 µg/1 and 1 2 µg/1,respectively <br /> No other fuel additives, including 1,2-DCA and EDB were detected at or above laboratory <br />' reporting limits in the ground water samples analyzed A map illustrating the approximate <br /> extent of TPH-d- and MTBE-impacted ground water is depicted on Figure 4 <br /> • Advanced CeoEnvironmental Inc <br /> 1 <br /> 1 <br />