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t05 July 2002 -AGE-NC Project No. 98-0520 Page 3 of 7 containerized in properly labeled DOT-approved model 55-gallon drums and was stored on-site. . ' Field sheets and data are included in Appendix B. ' 2.2. QUARTERLY WELL MONITORING PROCEDURES ' Monitoring wells MW-1 through MW-10 were sampled on 28 February 2002 in accordance with the AGE-prepared Preliminary Site Assessment Work Plan, dated 30 November 1998. 2.2.1. Well Monitoring and Evacuation A Solinst water level meter was used to measure the depth to ground water in the,five wells relative to the tops of the well casings.After the depth-to-ground water measurements were collected,casing water in the monitoring wells were evacuated using.new disposable plastic bailers. Approximately 7.5.to 8 gallons of water were evacuated from monitoring wells MW-1 through MW-5 and MW-8, MW-9 and MW-10;approximately 15 gallons ofwater were removed from well MW-6.Well MW-7 was sampled after 26 gallons of water were removed during the development of the well earlier in ' the day, equivalent to three casing-water volumes per well. Temperature, pH and conductivity,were measured at regular intervals,.using an .Oakton water analyzer to monitor pH, temperature and conductivity of the purged water; the,field data logs are provided in Appendix C. Purged water was temporarily stored on-site in 55-gallon drums. 2.2.2. Collection and Analysis of Ground Water Samples ' Water samples were collected from each purged well with disposable bailers.Each water samp le was transferred into' laboratory-supplied 40-m1 VOA vials containing 0.5 ml 18% hydrochloric acid as a sample preservative. After collection, the samples were properly labeled, placed in a chilled container and,transported under chain-of-custody to McCampbell Analytical, Inc. (MAI). The samples were"analyzed for: ' TPH-g in accordance with EPA Method 8015M• • BTEX and MTBE in accordance with EPA,Method 8020; and Fuel additives TBA,DIPE, ETBE, TAME,MTBE, 1,2-DCA, and EDB in accordance with EPA Method 8260B. ' Advanced GeoEnvironmentai,Inc.