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1 <br /> 30 July 2004 <br /> AGE-NC Project No 96-0232 <br /> Page 8 of 16 <br /> stabilization at regular purge-volume Intervals from each well using an Oakton water analyzer Field <br /> data and logs are provided in Appendix G The purged ground water was transferred to the ground <br /> water remediation system holding tank for treatment and disposal <br /> Single-completion monitoring wells MW-14, MW-15, MW-17, MW-18, MW-19 (A and B) and <br /> multi-level monitoring wells MW-8 through MW-13 were purged utilizing a Watera-Hydro-Lift 11 <br /> pump equipped with a mechanical arm by lowering and raising a 3/8-inch outer diameter, length- <br /> discrete polyethylene hose equipped with a ball-valve water tip through the top chambers into the <br /> specific water-charged screened section. Approximately 5%2 to 30 gallons of ground water (a <br /> minimum of three casing-water volumes per well) were purged from the single-completion <br /> monitoring wells and approximately 1/3 to 4%2 gallons of groundwater were purged from the multi- <br /> level monitoring wells Temperature,pH and conductivity were measured for stabilization at regular <br /> purge-volume intervals from each well using an Oakton water analyzer Field data and logs are <br /> provided in Appendix G, purged ground water was transferred to the ground water remediation <br /> system holding tank for treatment and disposal <br /> 32 GROUND WATER SAMPLING <br /> Ground water samples were collected from the purged wells MW-1 through MW-7,MW-16,EW-1, <br /> EW-3,EW-6 and EW-9 utilizing new,2-inch diameter disposable polyethylene bailers,groundwater <br /> samples were collected from the purged wells MW-8 through MW-15,MW-17,MW-18 and MW-19 <br /> utilizing 3/8-inch diameter polyethylene tubing Groundwater samples were transferred into one-liter <br /> amber bottles without a preservative and into 40-m1 EPA-approved volatile organic analysis(VOA) <br /> vials containing 0 5 ml 18% hydrochloric acid as a sample preservative Care was taken to ensure <br /> that visible air bubbles were not present in the vials after filling and capping Ground water sample <br /> containers were labeled with the well designation, date, time, and sampler's initials <br /> Ground water samples were collected at sampling ports located near the tops of extraction wells <br /> EW-2, EW-4,EW-5, EW-7,EW-8 and EW-10, each extraction well was allowed to be operational <br /> for at least 30 minutes prior to collecting samples directly into the sample containers <br /> In addition, ground water samples were collected from municipal water wells CSA-1, CSA-2 by <br /> opening a valve from each water well outlet sample port and allowing each well pump to turn on and <br /> operate for a minimum of 15 minutes to purge the wells and then collecting the running water <br /> directly into the sample containers <br /> Advanced GeoEnvironmental,Inc <br />