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22 February 2005 <br /> w AGE-NC Project No 01-0839 <br /> Page 3 of 4 <br /> The fuel additive 1,2-DCA was detected in the water samples collected from well MW-3 at a <br /> concentration of 2 3 pg/l <br /> No other analytes were detected at or above laboratory detection limits in the ground water <br /> samples analyzed The laboratory analytical results are summarized in Table 2 The laboratory <br /> report (CTEL Project No CT214-0412003), quality assurance/quality control (QA/QC) report, <br /> and chain of custody form are included in Appendix C Documents confirming the upload of <br /> laboratory electronic deliverable format (EDF) files and depth to water measurements to <br /> GeoTracker are included in Appendix D <br /> i <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> The following conclusions were drawn from the results of this investigation <br />' • Ground water elevations at the site ranged from 40 21 feet to 40 29 feet below MSL, <br /> indicating a increase in ground water elevation from the previous quarter The inferred <br /> ground water flow direction was north to northeast at a gradient of approximately <br />' . 0 002 ft/ft <br /> • MTBE and 1,2-DCA were detected for the sixth consecutive quarter <br />' 0 BTEX compounds were not detected in any of the ground water samples analyzed <br /> • TPH-g was detected in well MW-3, but it appears to be solely from the MTBE and 1,2- <br /> DCA components <br />' S.O. RECOMMENDATIONS <br />' Based on the findings of this investigation, AGE recommends <br /> • Continuation of the quarterly ground water monitoring program, the next monitoring <br />' event is scheduled for February 2005 <br /> • Preparation of a work plan to characterize the vertical and lateral extent of soil and <br />' ground water contamination at the UST location <br />' Advanced GeoEnvironmentel,Inc <br /> I <br />