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14 March 2006 <br /> • AGE-NC Project No 01-0886 <br /> Page 3 of 4 <br />' 3 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> TPH-g was detected in wells MW-1 and MW-3 at concentrations of 200 micrograms per liter(µg11) <br />' and 140 µg/l, respectively <br /> The fuel additives MTBE and 1,2-DCA were detected during the fourth quarter monitoring event, <br /> MTBE was detected in wells MW-1, MW-2, and MW-3 at concentrations of 59 gg/l, 5 7 gg/l, and <br /> 84 gg/l, respectively, and 1,2-DCA was detected in wells MW-1 and MW-3 at concentrations of <br /> 120 pg/1 and 16 gg/l,respectively The estimated distributions of dissolved MTBE and 1,2-DCA are <br />' Illustrated on Figures 4 and 5, respectively <br /> J� r <br /> � 11-at <br /> No other analytes were detected at or above laboratory detection limits in the ground water samples <br /> analyzed The analytical results of the ground water samples collected on f1�AVt(!AU005 are <br /> summarized in Table 2 The laboratory report (CTEL Project No CT214-0508064), quality <br /> assurance/quality control (QA/QC) report, and chain of custody form are Included In Appendix C <br /> Documents confirming the upload of laboratory electronic deliverable format(EDF)files and depth <br /> to water measurements to GeoTracker are included In Appendix D <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the data collected from the site, AGE concludes <br />' • At the time of the December 2005 sampling event, depths to ground water ranged from <br /> 65 70 feet to 66 25 feet below the tops of the well casings Ground water elevation at the site <br /> ranged from 35 39 feet to 35 63 feet below MSL, and averaged approximately 35 51 feet <br /> below MSL, indicating an increase in elevation of approximately 0 06 feet since the last <br /> ground water monitoring event in August 2005 <br /> • Ground water at the site was Inferred to be flowing toward the east-northeast under a <br /> hydraulic gradient of approximately 0 005 ft/ft <br /> • TPH-g was detected In wells MW-1 and MW-3 at concentrations of 200 gg/l and 140 pg/1, <br /> respectively BTEX compounds were not detected in the ground water samples, therefore, <br /> the detections of TPH-g are likely isolated fuel additives and not true petroleum <br /> hydrocarbons and most of the detected concentrations of TPH-g consists of the MTBE and <br /> � _1,2-DCA components__ V <br /> • MTBE was detected in wells MW-1, MW-2, and MW-3 at concentrations of 59 gg/l, <br />' 5 7 pg/l, and 84 gg/l, respectively, 1,2-DCA was detected in wells MW-1 and MW-3 at <br /> concentrations of 120 pg/l and 16 µg11, respectively a <br /> • <br /> Advanced GeoEnvironmental,Inc <br />