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1 23 March 2001 AGE-NC Project No 97-0343 ' Page 3 of 7 ' 2 5 MONITORING WELL DEVELOPMENT ACTIVITIES On 08 February 2001, monitoring wells MW4 through MW7 were developed utilizing a stainless ' steel hand bailer and a Grundfos submersible pump Ground water was purged from each monitoring well until ground water was visually sediment free, ' approximately 18 gallons of water were removed from MW5 and MW7, 20 gallons of water were removed from MW6 and 25 gallons of water were removed from MW4 Purged ground water was ' containerized in properly labeled D O T (Department of Transportation) -approved model 17H 55-gallon drums and was stored on-site in an area lacking public access Field sheets and data are included in Appendix B 2 6 MONITORING WELL PURGE PROCEDURES Ground water sampling of MW 1, MW2 and MW3 was conducted on 25 January 2001 and sampling of MW4 through MW7 was conducted on 09 February 2001 For the sampling events, a Solmst liewater level meter was used to measure the depth to ground water in the seven wells relative to the tops of the well casings The ground water elevations and gradient were determined from these data (Table 1) After recording water level measurements, a disposable bailer was used to purge monitoring wells MWI, MW2 and MW3 and a two-stage submersible pump was used to purge monitoring wells I MW4 through MW7 of standing water Approximately 3 gallons of water (minimum of 3 water volumes per well)were removed from MW 1, MW2 and MW3 and approximately 6 gallons of water were removed from MW4 through MW7 Ground water temperature, pH and conductivity were measured at regular intervals during purging of MW 1,MW2 and MW3 using a Hydac water analyzer and in MW4 through MW7 using an Oakton water analyzer Field sheets and data are included in Appendix C Purged water was stored on-site in labeled, 55-gallon DOT-approved drums 27 COLLECTION OF GROUND WATER SAMPLES Water samples were collected from each purged well using new disposable plastic bailers Each water sample was transferred into three 40-m1 VOA vials containing 0 5 ml 18% hydrochloric acid as a sample preservative and into one 1-liter amber bottle without added preservative After collection,the samples were properly labeled,placed in a chilled container Sample MWI,MW2 and MW3 were transported under chain-of-custody to Alpha Analytical Laboratories (AAT.) and samples I MW4 through MW7 were sent to MAI The samples were analyzed for the following • Advanced GeoEnvironmenkal,Inc