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' 28 July 2005 <br /> . AGE-NC Project No 01-0886 <br />' Page 3 of 6 <br />' 2 14 Monitoring Well Development <br /> On 06 May 2005,monitoring wells MW-1 through MW-3 were developed utilizing a Waterra inertia <br />' pump and steel bailer Ground water was purged from each monitoring well until it was visually <br /> sediment-free Approximately 20 to 25 gallons of water were removed from wells MW-1 through <br /> MW-3 Purged ground water was containerized in properly labeled, Department of Transportation <br /> (DOT)-approved 55-gallon drums and stored on-site Monitoring well development field logs are <br /> provided in Appendix C <br />' 2 2 QUARTERLY WELL MONITORING <br /> The initial quarterly ground water monitoring event was performed on 17 May 2005, ground water <br /> monitoring was performed on monitoring wells MW-1 through MW-3 <br /> 2 2 1 Well Monitoring and Evacuation <br /> ' The depths to ground water in monitoring wells MW-1 through MW-3 were measured from the tops <br /> of the well casings to the nearest 0 01-foot utilizing a Solinst water level meter Ground water <br /> ' elevation in each well was calculated by subtracting the measured depth to ground water from the <br /> surveyed casing elevation (Table 1) <br /> ' After water levels were measured,approximately 7 to 8 gallons of water(a minimum of three casing <br /> water volumes per well)were purged from wells MW-1 through MW-3 using a Waterra inertia pump <br /> and dedicated tubing Ground water temperature, pH, and conductivity were measured at regular <br /> ' intervals during purging using an Oakton water analyzer Field sheets and data are included in <br /> Appendix D-Purged water was stored on-site in properly labeled,DOT-approved 55-gallon drums <br /> ' 2 2 2 Collection and Analysis of Ground Water Samples <br /> ' Ground water samples were collected from each well using disposable plastic bailers after allowing <br /> the wells to achieve a minimum 80%recovery of the pre-purge water volume Each water sample <br /> was transferred into three laboratory-supplied, 40-millititer (ml) volatile organic analysis (VOA) <br /> ' vials containing 0 5 ml 18% hydrochloric acid solution as a sample preservative, and one 1-liter -— - <br /> amber bottle without preservative After collection,the samples were properly labeled,placed in a <br /> chilled container, and transported under chain of custody to CTEL for analysis The samples were <br /> analyzed for <br /> • <br /> ' Advanced GeoEnvironmentat,Inc <br /> 1 <br />