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1 r <br /> r r <br />' 07 November 2005 <br /> AGE-NC Project No 04-1239 <br />' Page 3 of 4 <br />' elevations as measured on 29 September 2005 <br />' 32 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> TPH-g was detected in well MW-9 at a concentration of 70,000 micrograms per liter(µg/1) <br />' BTEX compounds were detected in well MW-9 at the following concentrations 8,300 µg/l toluene, <br /> 3,300 µg/1 ethylbenzene, and 18,400 µg/1 total xylenes <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 29 September 2005 are <br />' summarized in Table 2 The laboratory report (CTEL Project No CT214-0509265), quality <br /> assurance/quality control (QA/QC) report, and chain of custody form are included in Appendix C <br />' 33 GEOTRACKER CONFIRMATIONS <br /> IDocuments confirming the upload of laboratory electronic deliverable format(EDF)files and depth <br /> to water measurements from the second and third quarter 2005 ground water monitoring events,as <br />' well as monitoring well installation soil sample data, to GeoTracker are included in Appendix D <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the data collected from the site, AGE concludes <br />' At the time of the September 2005 sampling event, depths to ground water ranged from ` <br /> 19 54 feet to 20 57 feet below the tops of the well casings Ground water elevation at the site <br />' ranged from 9 42 feet to 9 87 feet below MSL, and averaged approximately 9 60 feet below <br /> MSL, indicating a decrease in average ground water elevation of 1 47 feet since the last <br /> monitoring event in April 2005 <br />' Ground water at the site was inferred to be flowing toward the west-southwest under a <br /> hydraulic gradient of approximately 0 02 ft/ft <br />' Petroleum hydrocarbon concentrations in well MW-9 generally increased between the April <br /> and September 2005 ground water monitoring events TPH-g was detected at a concentration <br /> of 70,000 µg/1 BTEX compounds were detected at the following concentrations 8,300µg/l <br /> Itoluene, 3,300 µg/1 ethylbenzene, and 18,400 µg/1 total xylenes <br /> Advanced GeoEnvironmental,Inc <br />