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12 December 2005 <br />AGE -NC Project No 03-1055 <br />Page 5 of 6 <br />3 2 ANALYTICAL RESULTS OF SOIL SAMPLES <br />A total of 6 soil samples were analyzed for the constituents listed in section 2 1 1 <br />TPH-g was detected in the soil sample collected from boring MW9 at a concentration of 20 mg/kg <br />(MW9 at 15 feet bsg) <br />No other constituents of concern were detected at or above laboratory detection limits in the samples <br />analyzed Analytical results of soil samples are summarized in Table 2 <br />The laboratory reports (CTEL Project No CT214-0507005), quality assurance and quality control <br />(QA/QC) report, and chain -of -custody forms are included in Appendix E Documents confirming <br />the upload of laboratory electronic deliverable format (EDF) files and depth to water measurements <br />to GeoTracker are included in Appendix F <br />3 3 GROUND WATER GRADIENT AND FLOW DIRECTION <br />• At the time of the August 2005 sampling event, depths to ground water ranged from 10 50 (MW -6) <br />to 11 24 feet (MW -10) below the tops of the well casings Ground water elevations at the site <br />averaged approximately 38 67 feet below MSL (Table 1) During this monitoring event, the ground <br />water level in all wells were below the top of the well screen, indicating that the wells are properly <br />screened and representative of shallow ground water conditions <br />Ground water flow was inferred to be generally flowing towards the north under an average <br />hydraulic gradient ranging from approximately 0 0055 foot/foot (ft/ft) Figure 3 illustrates the <br />contoured ground water elevations as measured on 31 August 2005 <br />34 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br />TPH-g was detected in the ground water sample collected from well MW -8 at a concentrations of <br />1,300 µg/1 <br />Benzene, toluene, ethyl -benzene and total xylenes were detected in the ground water sample <br />collected from well MW -8 at concentrations of 24 µg/l, 7 4 µg/1, 22 µg/l, and 43 6 µg/1 <br />No other constituents of concern were detected at or above laboratory detection limits in the ground <br />water samples analyzed The analytical results of the ground water samples collected on 05 August <br />2005 are summarized on Table 3 The laboratory report (CTEL Project No CT214-0509001), <br />IS <br />QA/QC report, and chain -of -custody form are included in Appendix G <br />Advanced GeoEnvironmental, Inc <br />