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I - ' 15 February 1999 AGE-NC Project No 96-0229 Page 4of9 sediment free Purged ground water was containerized in properly labeled D O T -approved model ' 17H 55-gallon drums and was stored on-site in an area lacking public access Monitoring well field logs for development activities are included with Appendix C 2 2UART Q ERLY MONITORING AND SAMPLING ACTIVITIES On 15 October 1998, ground water monitoring and sampling was performed on monitoring wells MW-7, MW-8 and MW-9, on 19 October 1998, ground water monitoring and sampling was performed from monitoring wells MW-1 through MW-6,MW-I OA and MW-1 OB Depths to ground water and total well depths from MW-1 through MW-10 were measured to the nearest 0 01-foot utilizing a Solinst water level meter The ground water elevations were calculated by subtracting the depth to ground water from the surveyed casing elevations (Table 2) Ground water elevations were plotted and contoured on a scaled site map (Figure 10) Approximately 8 to 10 gallons of ground water were purged at screened intervals from MW-2 through MW-6, approximately 18 to 28 gallons of groundwater were purged from MW-7, MW-8, MW-9,MW-10A and MW-1013 Monitoringwell MW-I only produced approximately 6 gallon of ground water prior to being pumped"dry" Ground water was purged from each well until the water produced was essentially sediment free Purged ground water was containerized in properly labeled D O T -approved model 17H 55-gallon drums and was stored on-site in an area lacking public access Monitoring well field logs for development activities are included with Appendix C The ground water levels from monitoring wells MW-I through MW-10 achieved a minimum of 80 percent recharge prior to sample collection Ground water samples were collected utilizing disposable polyethylene bailers Ground water samples were transferred into EPA-approved 40-m1 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 VOAs after filling and capping The ground water sample containers were labeled with the well designation, date, time, and sampler's initials Following collection, each sample was logged on a chain-of-custody form, placed in a chilled container and transported to a DHS-certified laboratory for analysis in accordance with • EPA Method 8015M for TPH-g, • EPA Method 8020 for BTEX with MTBE, and O EPA Method 8260 for TBA, DIPS, ETBE, TAME and MTBE The results of the analysis are contained in Table 3 Advanced GeoEmironmentaf,Inc a