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I ' 15 January 2001 AGE-NC Project No 96-0232 ' Page 15 of 20 ' depicted in Figures 14, 15 16 and 17 Ground water elevation data collected In the First Zone Aquifer (5 to 35 feet bsg) from Flag City ' Chevron monitoring wells MW-1,MW-2,MW-4,MW-5,MW-6A,MW-7,MW-10A and MW-12A indicated that local ground water flow direction was variable and generally oriented toward the area of MW-1 at an approximate gradient of 0 009 ft/ft or less (Figure 14), the ground water elevation data in the area of Flag City Chevron well MW-13A and Three B's Truck Plaza wells MW-1 through MW-6 indicated that the ground water flow direction was generally toward the east-southeast at an approximate gradient of 0 004 ft/ft or less ' Ground water elevation data collected in the Second Zone Aquifer(40 to 60 feet bsg) from Flag City Chevron monitoring wells MW-6B, MW-8A, MW-9A and MW-IOB indicated that local ground ' water flow direction was variable and generally oriented toward the area of MW-1 at an approximate gradient of 0 003 ft/ft or less (Figure 15), the ground water elevation data in the area of Flag City ' Chevron wells MW-11 A,MW 12B and MW-13B indicated that the ground water flow direction was generally toward the east-southeast at an approximate gradient of 0 001 ft/ft or less ' Ground water elevation data collected in the Secondary Aquifer Zone (85 to 105 feet bsg) from Flag City Chevron monitoring wells MW-8B, MW-9B, MW-10D, MW-11C, MW-12C and MW-13C indicated that the ground water flow direction was generally east-southeast at an approximate gradient of 0 001 ft/ft or less (Figure 16) Ground water elevation data collected in the Primary Aquifer Zone (130 to 150 feet bsg) from Flag 1 City Chevron monitoring wells MW-8C,MW-9C,MW-10E and MW-12D indicated that the ground water flow direction was generally southeast at an average gradient of 0 0004 Rift or less (Figure 17), the ground water flow direction in the area of Flag City Chevron wells MW-11D was east and the ' flow direction at MW-13D was southwest at an approximate gradient of 0 008 or less, ground water flow direction and gradient In the area of MW-11D and MW-13D may have been influenced by pumping operation at domestic water wells DW-1 and RDW-1 8 4 2 Laboratory Results Of Ground Water Samples ' Dunn the December 2000 sampling event, TPH- was not detected above laboratory reporting During p g g limits in the analyzed samples TPH-d was detected in samples collected from wells MW-6B, ' MW-9B, MW-12A, MW-12D and MW-13A at concentrations as high as 210 ug/l, however the laboratory indicated that the diesel range compounds in each sample chromatogram was significant ' (no recognizable diesel patterns) • Benzene was detected in water samples collected from wells MW-6A and MW-13A at ' Advanced GeoEnvironmental,Inc