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' 03 June 2005 <br /> . AGE-NC Project No 98-0432 <br /> ' Page 3 of 4 <br /> ' event The ground water flow direction was Inferred to be toward the northwest at a gradient of <br /> approximately 0 0026 foot/foot (ft/ft) near the former UST locations (Figure 3) <br /> 3 2 GROUND WATER ANALYTICAL RESULTS <br /> No petroleum hydrocarbon compounds or fuel additives were detected in any of the samples <br /> collected in the first quarter 2005 monitoring event Ground water sample analytical results are <br /> summarized in Tables 2 and 3 The laboratory report(CTEL Project No CT214-0501141), quality <br /> assurance/quality control(QA/QC)reports,and chain of custody forms are included in Appendix B <br /> Documents confirming the upload of laboratory electronic deliverable format(EDF)files and depth <br /> to water measurements to GeoTracker are included in Appendix C <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> ' The followingconclusions were drawn from the results of this investigation <br /> g <br /> ! . During the January 2005 monitoring event,ground water was approximately 2 8 feet higher <br /> than the October quarterly sampling event This elevation represents the highest ground water <br /> elevation observed at the site over five consecutive years of ground water monitoring The <br /> ground water flow direction was northwest at a gradient of 0 0026 ft/ft in the area of the <br /> former USTs,which was consistent with the prevailing north to northwesterly flow directions <br /> ' at the site <br /> • No petroleum hydrocarbon compounds or fuel additives were detected in the samples <br /> collected and submitted for analysis <br /> 1 <br /> 5.0. RECOMMENDATIONS <br /> Based on the results of this investigation, AGE recommends <br /> ' • Continuation of quarterly ground water monitoring, <br /> ' • Preparation a closure summary report, based on stable and declining dissolved MTBE - <br /> concentrations <br /> ' Advanced GeoEnvironmental,Inc <br /> 1 <br />