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18 November 2005 AGE-NC Project No 02-0962 Page 6 of 7 No additional analytes were detected in the ground water samples collected on 01 September 2005 Analytical results of ground water samples are summarized in Table 3 The laboratory report(CTEL Project No CT214-0509014), QA/QC reports, and chain of custody form are included in Appendix H 3 5 GEOTRACKER CONFIRMATIONS Documents confirming the upload of laboratory electronic deliverable format(EDF)files and depth to water measurements to GeoTracker are included in Appendix I 4.0. SUMMARY AND CONCLUSIONS Based upon data collected during this monitoring event, AGE concludes the following • In general, brown clayey silt was encountered from surface grade to between 20 feet and 25 feet bsg, characteristically, the material had low plasticity and toughness Brown to gray, �. moist to saturated,poorly graded sandy silt and silty sand was encountered below the clayey silt to a depth of approximately 30 feet bsg A layer of brown clayey silt and gray clay was encountered in boring MW-5 between 25 feet and 30 feet bsg At 35 feet bsg,the total depth of the borings, gray, fine-grained, poorly graded micaceous sand was encountered • TPH-g was detected in the soil samples collected from boring MW-4 at 15 feet and 35 feet bsg (MW4-15 and MW4-35, respectively) at concentrations of 46 mg/kg and 230 mg/kg, respectively, TPH-g was detected in soil samples MW6-30 and MW6-35 at concentrations of 34 mg/kg and 38 mg/kg, respectively TPH-d was detected in soil samples MW4-15, MW4-20, MW4-35, MW6-30, and MW6-35 at a maximum concentration of 2,600 mg/kg in sample MW4-15 MTBE was detected in samples MW4-20 and MW4-25 at concentrations of 0 016 mg/kg and 0 017 mg/kg, respectively • During the September 2005 ground water monitoring event, depths to ground water ranged ` from 19 63 feet to 19 88 feet below the tops of the well casings Ground water elevation at the site averaged approximately 7 79 feet below MSL,indicating a decrease in ground water elevation of 1 46 feet since the last ground water monitoring event In May 2005 • On 01 September 2005, ground water was inferred to be flowing radially outward from a ground water mound centered over well MW-6 under a uniform hydraulic gradient of approximately 0 001 ft/ft • TPH-g and MTBE were detected in the ground water sample collected from well MW-4 at equivalent concentrations of 120 µg/1 (Table 3), since MTBE is included in CTEL's TPH-g i Advanced Geo Environmental,lne