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' 21 November 2001 AGE-NC Project No 98-0497 Page 2 of 4 ' other target contaminants in ground water and to characterize ground water flow direction and gradient on the site ' 2 1 WELL MONITORING AND EVACUATION On 30 August 2001, a Solmst water level meter was used to measure the depth to groundwater from the well casing tops in wells MW-I through MW-3 The depths to ground water are summarized in ' Table 1 After water levels were gauged, a disposable plastic bailer was used to evacuate (purge) each ' monitoring well of a minimum of three casing-water volumes (approximately 8 to 8 25 gallons) of water Temperature, pH, and conductivity were measured at approximately two-gallon intervals using a Hydac water analyzer The field data sheets are included in Appendix A Purged water was stored on site in 55-gallon drulzis • 22 GROUND WATER SAMPLE COLLECTION Prior to the collection of ground water samples,the depth to ground water was re-measured in each ' well to ensure that a minimum of 80% of the initial water volume had recharged Water samples were then collected from each well using a clean, disposable plastic bailer The water was transferred into one I-liter amber bottle and two chilled 40-m1 volatile organic analysis (VOA) vials containing ' 0 5 ml hydrochloric acid(18%) as a sample preservative After collection, the samples were labeled and placed in a chilled container for transportation under chain-of custody to McCampbell Analytical Laboratories (MAI),a DHS-certified analytical laboratory Each sample was analyzed for ' the following ' & TPH-g and TPH-d in accordance with EPA Method 8015 Modified, and • BTEX and MTBE in accordance with EPA Method 8020 3.0. FINDINGS ' Ground water elevation and flow direction were inferred from field data; hydrocarbon-mipacf to- ground oground water and soil was assessed by laboratory analysis of the ground water samples ' 1404need GeoEnviroament4Ine 1