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• 20 April 2005 AGE-NC Project No 95-0109 Page 3 of 6 • Nitrate,nitrite, chloride, sulfate and fluoride by EPA Method 300 0, • Phosphate by EPA Method 365 4, • General minerals including boron, calcium, Iron, manganese, magnesium, sodium, and potassium In accordance with EPA Method 200 7, • Total Alkalinity by EPA Method 2320B, • MBAS (Methylene blue active substances)by SM5540C, • Cam 17 Metals by EPA Method SW846 6010B, • Mercury(Hg)by EPA Method SW846 7470, and • Chromium VI by EPA Method 7196A 3.0. FINDINGS Ground water elevation and flow direction were inferred from the field data The petroleum hydrocarbon-Impact to ground water was quantified by laboratory analysis of the ground water samples 3 1 GROUND WATER GRADIENT AND DIRECTION On 03 March 2005, the depth to ground water ranged from 56 30 feet to 59 44 feet below the tops of the well casings Ground water elevations at the site ranged from 3 02 feet below mean sea level (MSL)in well MW-2 to 5 11 feet below MSL in well MW-20 Ground water levels were within the screened Intervals of water table wells MW-1 through MW-14 and MW-16,wells MW-20 through MW-22, but ranged from approximately 17 to 54 feet above the screened intervals of the deep- screened wells MW-15 and MW-17 through MW-19 Data from wells MW-1 through MW-5 were not used to Infer ground water flow direction or gradient because these wells are screened at different Intervals than the remaining wells The ground water for the well network was inferred to be flowing towards the south on-site and off- site The ground water gradient ranged from approximately 0 002 ft/ft on-site to 0 004 ft/ft off-site Figure 3 illustrates the contoured ground water elevations, historical ground water flow directions are summarized In Table 6 Ground water contour maps from the 2004 monitoring events are mcluded in Appendix C Advanced GeoEnvironmental,Inc