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Ile 25 March 2004 <br /> AGE-NC Project No 97-0249 <br />' Page 4 of 7 <br /> Generally,nearly flat, very slight upward and downward vertical gradients were observed between <br />' Hydrologic Unit 1 and Hydrologic Unit 6 screen intervals of all the above wells (Figure 3), a <br /> moderate downward vertical gradient was observed at well MW-1 I between Hydrologic Unit's 2 <br />' and 3 <br /> Ground water elevations were plotted on scaled site plans for the Informal Hydrogeologic Unit 1 <br />' (between 10 and 35 feet, Figure 4), Hydrogeologic Unit 2 (between 35 and 60 feet, Figure 5), <br /> Hydrogeologic 3 (between 60 and 90 feet, Figure 6), Hydrogeologic Unit 4 (between 90 and 110 <br /> feet, Figure 7) and Hydrogeologic Unit 6 (between 135 and 150 feet, Figure 8) <br /> 3 1 1 H�Ldrogealogic Unit 1 <br />' Ground water elevation data collected from Hydrologic Unit 1 (10 to 35 feet bsg) at the Flag City <br /> Chevron was Inferred to have a radially Inward flow direction towards a ground water depression <br />' in the area of Flag City Chevron wells MW-1,MW-2 and MW-4(Figure 4)at ground water gradients <br /> of 0 004 ft/ft or less The ground water gradient at the Three B's Truck Plaza was Inferred to be <br /> towards the east-northeast at hydraulic gradients of 0 002 ft/ft or less <br /> 3 12 Hydro geologic.Unit 2 <br /> Ground water elevation data collected from Hydrologic Unit 2(40 to 60 feet bsg)inferred a radially- <br /> inward ground water flow in the area of FIag City Chevron well MW-6B, net flow Is southwards at <br /> ground water gradients of 0 002 ft/ft or less Ground water flow direction at the Three B's Truck <br /> Plaza was Inferred to be towards the east-southeast at hydraulic gradient of 0 002 ft/ft or less <br /> (Figure 5) <br /> 3 1 3 Hydrologic Unit 3 <br /> Ground water flow from Hydrologic Unit 3 (60 to 90 feet bsg) appeared to be towards the east at <br /> both the Flag City Chevron and the Three B's Truck Plaza sites, at hydraulic gradients less than <br />' 0 001 ft/ft or less (Figure 6) <br /> 3 1 4 Hydrologic Unit 4 <br /> Ground water flow from Hydrologic Unit 4 (90 to 110 feet bsg) appeared to be towards the east- <br /> northeast at both the Flag City Chevron and Three B's Truck Plaza sites, at hydraulic gradients of <br /> . 0 001 ft/ft or less (Figure 7) <br /> IAdvanced GeoEnvironmental,Inc <br />