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S T ' 10 December 2004 . AGE-NC Project No 02-0926 ' Page 3 of 4 f ' 23 63 feet (MW-3)to 24 88 feet(MW-2) below mean sea level (MSL) The ground water gradient was calculated to be approximately 0 02 foot/foot (ft/ft) toward the north to northeast During this monitoring event, the ground water elevations were within the screened intervals of the wells ' Figure 3 Illustrates the contoured ground water elevations as measured on 15 July 2004 ' 32 ANALYTICAL RESULTS OF GROUND WATER SAMPLES TPH-g,benzene, and xylenes were detected in the ground water sample collected from monitoring ' well MW-3 at concentrations of 70 micrograms per liter(µg11), 7 8 µg/1, and 2 6 µg/l,respectively 1,2-DCA was detected in the ground water samples collected from wells MW-1 and MW-3 at concentrations of 12 µg/1 and 64 µg/l, respectively An Iso-concentration map depicting the ' approximate distribution of dissolved 1,2-DCA is presented on Figure 4 No other target analytes were detected at or above laboratory detection limits in the ground water samples analyzed ' Analytical results of ground water samples are summarized in Table 2 The laboratory report(CTEL Project No CT214-0407107), quality assurance/quality control report, and chain of custody forms are included in Appendix D Documents confirming the upload of laboratory electronic deliverable format (EDF) files and depth to water measurements to GeoTracker are Included in Appendix E ' 4.0. SUMMARY AND CONCLUSIONS iBased on data collected on-site,AGE concludes • Depth to ground water at the site averaged approximately 43 08 feet bsg on 15 July 2004 • Ground water elevation in the monitored area ranged from 23 63 feet to 24 88 feet below MSL Flow direction was inferred to be toward the north to northeast under a gradient of approximately 0 02 ft/ft ' 0 TPH-g, benzene, and xylenes were detected in the ground water sample collected from monitoring well MW-3 at a concentration of 70 micrograms per liter (µg/1), 7 8 µg11, and 2 6 µg/l, respectively 1,2-DCA was detected in the ground water samples collected from wells MW-1 and MW-3 at concentrations of 12 gg/l and 64 µg/1,respectively li 5.0. RECOMMENDATIONS Based on the findings recounted in this report, AGE recommends 4i Advanced GeoEnvtronmental,Inc