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1`8 May 2006 AGE-NC Protect No 04-1239 ' Page 3 of 7 A i 13 feet to 39 feet bsg In well MW-13 and from 53 feet to 65 feet bsg in wells MW-13 and MW-14, and a nominal 2-foot bentonite chip plug was installed above the filter pack and hydrated The remaining annular space was filled to near the surface with a portland cement grout mix and ' water-tight, traffic-rated well boxes were installed over the wells As-built well diagrams are depicted on the boring logs in Appendix B ' 2 14 Monitoring Well Development ' On 03 February 2006,monitoring wells MW-12 through MW-14 were developed utilizing a Waterra inertia pump and steel hand bailer Ground water was purged from each monitoring well until it was visually sediment-free Approximately 24 gallons of water were removed from well MW-12, ' approximately 70 and 75 gallons of water were removed from wells MW-13 and MW-14, respectively Purged ground water was containerized in properly labeled,DOT-approved 55-gallon drums and stored on-site pending proper disposal Monitoring well development field logs are ' provided in Appendix C ' . 2 2 QUARTERLY WELL MONITORING ' The first quarter 2006 ground water monitoring event was performed on 22 March 2006, ground water monitoring was performed on monitoring wells MW-9 through MW-14 I2 2 1 Well Monitoring and Evacuation On 22 March 2006, the depths to ground water in monitoring wells MW-9 through MW-14 were measured from the tops of the well casings to the nearest 0 01-foot utilizing a Solinst water level meter Ground water elevation in wells MW-9 through MW-11 was calculated by subtracting the measured depth to ground water from the surveyed casing elevation (Table 1) After water levels were measured, approximately 9 to 10 5 gallons of water (a minimum of three casing water volumes per well) were purged from wells MW-9 through MW-1 I using a Waterra inertia pump and dedicated tubing, approximately 21 gallons of water were purged from wells MW-13 and MW-14 Monitoring well MW-12 drew down after 5 gallons had been removed Ground water temperature,pH,and conductivity were measured at regular intervals for stabilization during purging using an Oakton water analyzer Field sheets and data are included in Appendix D Purged water was stored on-site in properly labeled, DOT-approved 55-gallon drums pending proper disposal IAdvanced GeoEnvzronmental,Inc I