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1 <br /> R 3 0 July 2004 <br /> AGE-NC Project No 96-0232 <br /> Page 10 of 16 <br /> the First and Second Zones,Rocky's Upper Zone and Secondary Zone However,moderately steep <br /> downward gradients were observed between the Secondary Aquifer Zone and Primary Aquifer Zone <br /> (Figure 3) <br /> The 14 June 2004 ground water elevation data collected from the Flag City Chevron site and the <br /> m adjacent Three B's Truck Plaza site were plotted for the informal First Zone, Second Zone, <br /> Secondary Aquifer Zone and Primary Aquifer Zone hydrogeologic units as defined in AGE's Final <br /> Remediation Plan, and are depicted in Figures 4, 5, 6 and 7, respectively <br /> 3 5 1 1 First Zone Aquifer <br /> Ground water elevation data collected in the First Zone Aquifer(15 to 35 feet bsg) at the Flag City <br /> Chevron inferred net ground water flow towards the east-southeast at hydraulic gradients of 0 001 <br /> ft/ft or less The ground water gradient at the Three B's Truck Plaza inferred net ground water flow <br /> towards the east-northeast at hydraulic gradients of 0 001 ft/ft or less (Figure 4) <br /> 3 5 1 2 Second Zone Aquifer <br /> Ground water elevation data collected in the Second Zone Aquifer(40 to 60 feet bsg) inferred net <br /> ground water flow towards the east-southeast at hydraulic gradients of 0 002 fVft or less The ground <br /> water gradient at the Three B's Truck Plaza inferred net ground water flow towards the east- <br /> northeast at hydraulic gradients of 0 002 ft/ft or less (Figure 5) <br /> 3 5 13 Secondary Aquifer Zone <br /> Net ground water flow in the Secondary Aquifer Zone(85 to 105 feet bsg)was inferred towards the <br /> east-southeast at hydraulic gradients of 0 001 ffiJft or less The ground water gradient at the Three B's <br /> Truck Plaza inferred net ground water flow towards the east-northeast at hydraulic gradients of 0 001 <br /> #1/ft or less (Figure 6) <br /> 3 5 14 Pnmary Aquifer Zone <br /> Net ground water flow in the Primary Aquifer Zone(130 to 150 feet bsg)was inferred towards the <br /> east-southeast at hydraulic gradients of 0 001 ft/ft or less The ground water gradient at the Three B's <br /> Truck Plaza inferred net ground water flow towards the east-northeast at hydraulic gradients of 0 001 <br /> ft/fl or less (Figure 7) <br /> Advanced GeoEnvironmental,Inc <br />