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02 March 2005 <br /> AGE-NC Project No. 97-0360 <br /> r ! Page 3 of 4 <br /> per liter(µg11) and 130 µg11,respectively. A map depicting the estimated.distribution of dissolved <br /> i ! <br /> TPH is shown on Figure 4. <br /> No other analytes of concern were detected at or above laboratory reporting limits in any of the <br /> ground water samples analyzed. The analytical results of ground water samples are summarized in <br /> Table 2. The laboratory report (CTEL Project No. CT214-0407139), quality assurance/quality <br /> control (QA/QC) report, and chain of custody form are included in Appendix C. Documents <br /> confirming the upload of laboratory electronic deliverable format (EDF) files and depth to water <br /> measurements to GeoTracker are included in Appendix D. <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based on data collected from the site this quarter, AGE concludes: <br /> • Gxozd w�atex flow direction at the site on 20 July 2004 was inferred to be toward the <br /> ' nohwe` t and nneas�f5 at a gradients of approximately 0.002 ft/ft and 0.001 ft/ft, <br /> respectively. The gradient and flow direction this quarter are similar to those measured in <br /> previous quarters. <br /> • TPH-g and TPH-d concentrations in well EW-1 remain non-detect this quarter. No other <br /> hydrocarbon compounds or fuel oxygenates were detected in well EW-1 this quarter,or have <br /> ` been since ground water monitoring began.(Table 2). <br /> _ TPH-g was detected in samples from wells MW-2 and MW-5 at concentrations of 270 µg/l <br /> and 13 0 µg/l,respectively. Correspondence with a CTEL representative indicated that these <br /> detections are aged/degraded. <br /> EThe lateral extent of petroleum hydrocarbon-impacted ground water has been defined to the <br /> -` north by well MW-1,to the south by well MW-3, and to the west by well MW-4. <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 took place in October 2004.A work plan <br /> is currently being prepared to define the lateral extent of dissolved petroleum hydrocarbons at the <br /> i site.Once it is submitted to the EHD and approval is granted,AGE will acquire all necessary permits <br /> and begin the next phase of the investigation. <br /> i <br /> i <br /> Advanced GeoEnvironmental,Inc. <br /> - i <br />