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28 November 2005 (•� AGE-NC Project No 96-0232 Page 2 of 8 informal First Zone and Second Zone as defined in AGE's Final Remediation Plan (Figures 3 and 4, respectively) ` Between 27 and 28 September 2005, approximately 6 to 8 gallons of ground water(a minimum of - three casing-water volumes per well) were evacuated (purged) from wells MW-1 through MW-5, MW-6A, MW-7 and MW-16 utilizing disposable polyethylene bailers Temperature, pH and conductivity were measured for stabilization at regular purge-volume Intervals from each well using an Oakton water analyzer Field data and logs are provided in Appendix B The purged ground water was transferred to the ground water remediation system holding tank for treatment and disposal Single-completion monitoring wells MW-14, MW-15, MW-17 and MW-18, dual completion monitoring wells MW-613, MW-19 and MW-20, and multi-level monitoring wells MW-8 through MW-13 were purged utilizing a Watera-Hydro-Lift II pump equipped with a mechanical arm 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 23 to 31 gallons of ground water (a minimum of three casing-water volumes per well)were purged from single-completion monitoring wells MW-14,MW-15,MW-17 and MW-18, approximately 5 to 17 gallons were purged from dual completion wells MW-6B,MW-19(A-B)and f�) MW-20 (A-B), and approximately 1/3 to 41/2 gallons of groundwater were purged from multi-level monitoring wells MW-8 through MW-13 Temperature, pH and conductivity were measured for stabilization at regular purge-volume Intervals from each well using an Oakton water analyzer Field data and logs are provided in Appendix B,purged ground water was transferred to the ground water remediation system holding tank for treatment and disposal 2 2 GROUND WATER SAMPLING Ground water samples were collected from the purged wells MW-1 through MW-land MW-16 utilizing new,2-inch diameter disposable polyethylene bailers,ground water samples were collected from the purged wells MW-613,MW-8 through MW-15 and MW-17 through MW-20 utilizing s/s- inch diameter polyethylene tubing Ground water samples were transferred Into one-liter amber bottles without a preservative and into 40-m1 EPA-approved volatile organic analysis (VOA) vials containing 0 5 ml 18% hydrochloric acid as a sample preservative Care was taken to ensure that visible air bubbles were not present In the vials after filling and capping Ground water sample containers were labeled with the well designation, date, time, and sampler's Initials 23 LABORATORY ANALYSIS OF GROUND WATER SAMPLES Each ground water sample was logged on a chain of custody form,placed in a chilled container and . Advanced GeoEnvironmentai,Inc