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' 16 January 2006 <br /> AGE-NC Project No 99-0592 <br /> Page 3 of 4 <br /> level (MSL)in MW-1 to 35 06 feet below MSL in well MW-3 The groundwater flow was directed <br />' toward the southeast with a hydraulic gradient calculated at approximately 0 002 foot/foot (ft/ft) <br /> Depth to water and ground water elevations are summarized in Table 1 Figures 3 illustrates the <br />' contoured ground water elevations <br />' 32 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> MTBE and 1,2-DCA were detected in the samples collected from well MW-1 at concentrations of <br />' 94 µg11 and 3 7 µg/l, respectively No other analytes of concern were detected above laboratory <br /> reporting limits in the samples collected for the second quarter monitoring event <br />' Analytical results for the ground water samples from the June 2005 monitoring event are <br /> summarized in Tables 2 and 3 The laboratory report(CTEL Project No CT214-0506206), quality <br /> assurance/quality control (QA/QC) and chain of custody are included in Appendix B Documents <br />' confirming the upload of laboratory electronic deliverable format (EDF) files and depth to water <br /> measurements to GeoTracker are included in Appendix C <br /> • 4.0. SUMMARY AND CONCLUSIONS <br /> tBased on the findings from this investigation, AGE concludes <br /> • Ground water at the site for the June 2005 monitoring event was inferred to be flowing <br /> toward the southeast at an average gradient of 0 002 ft/ft The ground water flow direction <br /> is inconsistent with previous monitoring events The flow direction has rotated <br />' approximately 90 degrees <br /> • The average groundwater elevation at the site on 22 June 2005 was 34 74 below MSL The <br /> average ground water elevation at the site increased approximately 2 57 feet between the <br />' March 2005 and June 2005 monitoring events <br /> • Petroleum hydrocarbon-impacted ground water appears to be limited to the area near <br />' monitoring well MW-1 None of the target analytes were detected in second quarter 2005 <br /> ground water samples collected from DW-1 <br /> 5.4. RECOMMENDATIONS <br /> Based on the results of this investigation,AGE submitted Closure Summary Report,dated 30 August <br /> • 2004,the EHD has responded by letter dated 15 March 2005,requiring site fate and transport study <br />' Advanced GcoEnvironmental,Inc <br />