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' • 21 December 2002 AGE-NC Project No 99-0559 ' Page 2of8 ' 12 October 1999, and Interim Remediation and Site Assessment Work Plan, date 25 January 2001, both prepared by AGE ' Between 17 and 18 September 2002, ground water monitoring and sampling were performed on the twenty-four ground water monitoring wells at the site (MW-1 through MW-4, MW-5A through MW5-E, MW-6A through MW-6E, MW-7A through MW-7E and MW-8A through MW-8E) 2 1 WELL MONITORING AND EVACUATION ' On 17 and 18 September 2002,depth to ground water was measured in wells MW-I through MW-8E from the tops of the well casings to the nearest 0 01-foot utilizing a Slope water level meter, ground ' water elevations and gradients in this report are based on the September 2002 depth measurements On 17 and 18 September 2002, dedicated, disposable polyethylene bailers were utilized to purge ' standing water from wells MW-1, MW-3 and MW-4, well MW-2 was not purged or sampled due to the presence of free product Approximately 1 5 and 6 5 gallons of ground water(a minimum of . three casing water-volumes per well)were removed from wells MW-4 and MW-1 ,well MW-4 was ' bailed dry after 1 5 gallons of water were removed Approximately 2 gallons of water and free product were removed from well MW-3 prior to sampling ' The well chambers of the multi-level monitoring wells MW-5 through MW-8 were purged by lowering and raising a 3/8-Inch outer diameter, length-discrete polyethylene hose equipped with a ' ball-valve water tip through the top chambers into the specific water-charged screened section Approximately 125 to 7 5 gallons of ground water(a minimum of three casing-water volumes per well)were removed from the multi-level monitoring well level B, C,D and E Level A of the multi- level monitoring wells was not purged this quarter due to an Insufficient amount of water in the chamber,ground water was collected directly from the chamber In addition,multi-level monitoring well 6D was not purged or sampled due to a stuck bailer ' When purged water was readily available, temperature, pH and conductivity were measured for stabilization at regular purge-volume Intervals using an Oakton water analyzer Field data and logs ' are included with Appendix B Purged ground water was containerized in 55-gallon drums and was stored on-site in an area lacking general public access ' 22 COLLECTION AND ANALYSIS OF GROUND WATER SAMPLES ' Prior to ground water sampling,the ground water level of wells MW-1,MW-3, MW-4,multi-level • monitoring well levels B, C, D and E were measured to insure that the wells achieved a minimum ' Advanced GeoEnvironmental,Inc