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1 I _ <br /> 1 1 r r <br /> 1 I y <br /> VII 1 <br /> S <br /> _ 1 <br /> •� � I 1 November 20Q4 <br /> AGE-NC Project No 03-1100 <br /> Page 3 of 4 ' <br /> 3 2 ' ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> TPH-g was only detected in ground water samples collected from wells MW-2 and MW-3 at <br /> } concentrations of 200,000 micrograms per liter(µg/1)and 130 µg/1,respectively BTEX compounds <br /> were only detected in the ground water sample collected from well MW-2 at a concentration of <br /> 1,300 µg/1 (benzene), 14,000 gg/l (toluene), 3,600 µg/1 (ethylbenzene), and 15,400 µg/1 (total <br /> I <br /> xylenes) <br /> 1,2-DCA was detected in ground water samples collected from wells MW-2 and MW-3 at <br />' concentrations of 150 µg/l and 46 µg/l, respectively MTBE was not detected in ground water <br /> samples collected from any of the wells No other constituents of concern were detected in the <br /> ' ground water analyses at or above laboratory detection limits <br /> Analytical results of water samples collected in August 2004 are summarized in Table 2 The <br /> , <br /> laboratory report (CTEL Project No CT214-0409008), quality assurance/quality control (QA/QC) <br />' report, and chain of custody form are included in Appendix B <br />� . 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the findings from this investigation, AGE concludes <br /> 1 <br /> The ground water elevation on-site ranged from 24 69 to 25 27 feet below MSL Ground <br /> water flow was inferred to be flowing inward toward an elongated depression in the former <br /> UST location under a gradient of 0 01 ft/ft or less <br /> I y <br /> •' TPH-g was detected in the ground water sample collected from well MW-2 at a concentration of 200,000 µg/1 <br /> , <br /> • 1,2-DCA was detected in ground water samples collected from wells MW-2 and MW-3 at ' <br />' concentrations of 150 µg/1 and 46 µg/l, respectively MTBE was not detected at or above <br /> laboratory reporting limits in any of the ground water samples analyzed <br /> w µ The lateral extent of TPH g Impacted ground water has been def ned to the northwest, west,^ � <br /> and southwest of the former UST area, but not to the east <br /> , 1 <br /> • ,The vertical extent of petroleum hydrocarbon contamination has not be defined in the former <br /> IUST location <br /> I <br />' r Advanced GeoEnwonmental,Inc <br /> t <br />