Laserfiche WebLink
1 <br /> ' 24 May 2006 <br /> . AGE-NC Project No 01-0886 <br /> Page 3 of 4 <br /> ' 32 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> 1,2-DCA was detected in wells MW-I and MW-3 at concentrations of 51 µg/l and 3 8 µg/1, <br /> respectively The estimated distributions of dissolved 1,2-DCA is illustrated on Figure 4 <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 08 March 2006 are <br /> summarized in Table 2 The laboratory report (CTEL Project No CT214-0603058), quality <br /> assurance/quality control (QA/QQ report, and chain of custody form are included in Appendix D <br /> • <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> ' Based on the data collected from the site, AGE concludes <br /> • At the time of the March 2006 sampling event, depths to ground water ranged from <br /> 63 3 5 feet to 63 89 feet below the tops of the well casings Ground water elevation at the site <br /> ranged from 33 03 feet to 33 28 feet below MSL, and averaged approximately 33 15 feet <br /> • below MSL, indicating an increase in elevation of approximately 2 36 feet since the last <br /> ground water monitoring event in December 2005 <br /> ' Ground water at the site was inferred to be flowing toward the west-southwest under a <br /> hydraulic gradient of approximately 0 005 ft/ft <br /> ' 1,2-DCA was detected in wells MW-1 and MW-3 at concentrations of 51 µg/l and 3 8 µg/1, <br /> respectively No other analytes were detected at or above laboratory detection limits in the <br /> . ground water samples analyzed <br /> ' The concentrations of TPH-g and MTBE in wells MW-1 and MW-3 decreased below r <br /> laboratory detection limits this quarter The concentration of 1,2-DCA in wells MW-1 and <br /> MW-3 decreased significantly compared to last quarter <br /> • Apparently, most of the detected concentrations of TPH-g in wells MW-1 and MW-3 have <br /> consisted of the MTBE and 1,2-DCA components <br /> 5.0. RECOMMENDATIONS <br /> Based on the findings of the environmental activities recounted in this report, AGE recommends <br />' Continuation of quarterly monitoring events,the next event is scheduled to take place in June <br /> • 2006 <br /> Advanced GeoEnvironmeatal,Inc <br />