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1 <br /> ' 31 March 2006 <br /> • AGE-NC Project No 97-0351 <br /> ' Page 3 of 4 <br /> 32 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> 1 <br /> TPH-g was detected in the ground water samples collected from wells MW-1 and MW-8 at <br /> concentrations of 1,000 micrograms per liter(µg/1)and 3,800 4g/1,respectively BTEX compounds <br /> ' were also detected in wells MW-1 and MW-8 at the following maximum concentrations in well <br /> MW-8 60 µg11 benzene, 48 µg/1 toluene, 200 µg/1 ethylbenzene, and 254 µg/l total xylenes <br /> 1,2-DCA was detected in well MW-8 at a concentration of 2 7 µg/1 <br /> ' No other petroleum hydrocarbons were detected in ground water samples from the monitoring wells <br /> Analytical results of ground water samples are summarized in Table 2 The laboratory report(CTEL <br /> Project No CT214-0601024), quality assurance/quality control (QA/QC) report, and chain of <br /> ' custody form are included in Appendix C <br /> ' 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the environmental data collected at the site during the first quarter 2006,AGE concludes <br /> ' On 05 January 2006, depths to ground water ranged from 5 94 feet to 6 97 feet below the <br /> tops of the well casings Ground water elevation at the site ranged from 2 59 feet to 3 97 feet <br /> ' above MSL and averaged approximately 3 37 feet above MSL, indicating an increase in <br /> elevation of approximately 2 5 feet since the last ground water monitoring event in October <br /> ' 2005 <br /> • Ground water near the former east UST location was inferred to be flowing outward from <br /> a southwest-trending ground water ridge over well MW-1 under hydraulic gradients between <br /> ' 0 009 ft/ft and 0 01 ft/ft Ground water near the former west UST location was inferred to <br /> be flowing inward toward a depression in the potentiomentric surface near well MW-7 under <br /> hydraulic gradients between 0 006 ft/ft and 0 01 ft/ft <br /> • TPH-g was detected in the ground water samples collected from wells MW-1 and MW-8 at <br /> concentrations of 1,000 µg/1 and 3,800 µg/l, respectively BTEX compounds were also <br /> detected in wells MW-1 and MW-8 at the following maximum concentrations in well MW-8 <br /> 60 µg/l benzene, 48 µg/l toluene, 200 µg/1 ethylbenzene, and 254 µg/1 total xylenes <br /> • 1,2-DCA was detected in well MW-8 at a concentration of 2 7 µg/l <br /> 1 <br /> i <br /> ' Advanced GeoEnv►ronmentai,Inc <br /> 1 <br />