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15 August 2005 AGE-NC Project No 04-1045 ' Page 3 of 4 ' 3 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES TPH-g was detected in the ground water sample collected from well MW-1 at concentrations of ' 170,000 micrograms per liter(µg/1) One or more BTEX compounds were detected in ground water samples collected from wells MW-1 ' through MW-3,the maximum BTEX concentrations were detected in well MW-1 at concentrations of 9,500 µg/1 benzene, 27,000 µg/1 toluene, 5,300 µg/1 ethylbenzene and 25,600 µg/1 total xylenes 1,2-DCA was detected in the ground water sample collected from well MW-1 at a concentration of 1,300 µg/1 and TAME was detected in the ground water sample collected from well MW-1 at a concentration of 150 pg/1 ' No other analytes were detected at or above laboratory reporting limits in the analyzed ground water samples The analytical results of the ground water samples collected on 05 May 2005 are ' summarized in Table 2 A map depicting the concentrations ofpetroleum hydrocarbon contamination is shown on Figure 4 The laboratory report (CTEL Project No CT214-0505074), QA/QC reports . and chain of custody form are included in Appendix C Documents confirming the upload of laboratory electronic deliverable format(EDF)files and depth to water measurements to GeoTracker are included in Appendix D 4.0. SUMMARY AND CONCLUSIONS Based on the data collected from the site, AGE concludes • The ground water flow direction was modeled to the southeast at a gradient of 0 002 ft/ft, which is generally consistent with flow in the area • TPH-g and BTEX compounds were detected in ground water samples collected from wells MWA through MW-3, at maximum concentrations of 170,000 µg/1 TPH-g, 9,500 µg/l benzene, 27,000 µg/1 toluene, 5,300 µg/1 ethylbenzene and 25,600 µg/1 total xylenes from I well MW-1 • 1,2-DCA and TAME were detected in the ground water sample from MW-1 at concentrations of 1,300 µg/1 and 150 }ig/l, respectively J • Advanced GeoEnvironmentai,Inc