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1 <br /> 1 <br /> 13 April 2001 <br /> AGE-NC Project No 96-0232 <br /> Page 9of14 <br />' 3 4 1 Ground Water Elevation And Gradient <br /> During the March 2001 monitoring event, depths to ground water from Flag City Chevron wells <br />' MW-1 through MW-13 were measured between 8 93 and 12 29 feet below the tops of the well <br /> casings, ground water elevations were calculated to be between 0 13 and 2 12 feet below mean sea <br />' level Ground water elevation at the site increased an average 1-91 feet between the December 2000 <br /> and the March 2001 ground water monitoring events The March 2001 ground water elevation data <br /> collected from the Flag City Chevron site and the adjacent Three B's Truck Plaza site is depicted in <br />' Figures 3, 4, 5 and 6 <br /> Ground water elevation data collected in the First Zone Aquifer (5 to 35 feet bsg) from Flag City <br />' Chevron monitoring wells MW--1,MW-2, MW-4, MW-5,MW-6A,MW-7 and MW-12A indicated <br /> that local ground water flow direction was variable(northeast, east and southeastward) and generally <br /> oriented toward the area of MW-1 and MW-6A at an approximate gradient of 0 002 ft/ft or less <br />' (Figure 3), the ground water elevation data in the area of Flag City Chevron well MW-13A and <br /> Three B's Truck Plaza wells MW-1 through MW-6 indicated that the ground water flow direction <br /> was generally toward the east at an approximate gradient of 0 002 fUft or less , <br /> Ground water elevation data collected in the Second Zone Aquifer(40 to 60 feet bsg) from Fla Ci <br /> g g t3' <br /> Chevron monitoring wells MW-6B, MW-8A and MW-9A indicated that local ground water flow <br /> direction was variable and generally oriented toward the area of MW-1 at an approximate gradient <br /> of 0 02 ft/ft or less (Figure 4), the ground water elevation data in the area of Flag City Chevron wells <br /> MW-11A, MW12B and MW-13B indicated that the ground water flow direction was generally <br />' toward the east at an approximate gradient of 0 002 fUf1 or less <br /> Ground water elevation data collected in the Secondary Aquifer Zone(85 to 105 feet bsg) from Flag <br /> City Chevron monitoring wells MW-8B, MW-9B, MW-I 1 C, MW-12C and MW--13C indicated that <br /> the ground water flow direction was generally east at an approximate gradient of 0 001 ft/ft or less <br /> I (Figure 5) <br /> Ground water elevation data collected in the Primary Aquifer Zone (130 to I50 feet bsg) from Flag <br /> City Chevron monitoring wells MW-8C, MW-9C,MW-11D,MW-12D and MW-13D indicated that <br /> the ground water flow direction was generally east at an average gradient of 0 0001 ft/ft or less <br /> (Figure 6) <br /> 3 4 2 Laboratory Results Of Ground Water Samples <br /> IDanzig the March 2001 sampling event, TPH-g was not detected above laboratory reporting Iimits <br /> I in any analyzed samples TPH-d was detected in samples collected from wells MW-6A, MW-IOA, <br /> 1 <br /> Advanced GeoEnv[ronmental,Inc <br /> I <br />