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' 17 February 2004 AGE-NC Project No 96-0254 Page 4 of 10 On 19 January 2000, wells MW-1, MW-2, MW-3 and MW-4 were sampled TPH-g, TPH-d and BTEX compounds were not detected in the ground water samples collected and analyzed from wells MW-1 through MW-4 MTBE was detected in the ground water samples collected from wells MW-1, MW-2 and MW-3 Concentrations of MTBE ranged from 200 micrograms per liter(µg/1)to 9,800 ' µg/1 in samples collected from monitoring wells MW-1,MW-2 and MW-3 Analytical results of the ground water samples collected from the site from January 2000 to July 2003 are presented in Table 4 and Table 5 On 12 October 2000, three soil probe bonngs (B7 through B9) were advanced at the site Bonngs ' were advanced to a depth of 50 feet bsg Soil samplk�e��,,s_were collected at 5-foot intervals,beginning y at a depth of 30 feet bsg MTBE was detected in tWof the soil samples analyzed by EPA Method 7/z 8020 and was detected in four soil samples analyzed by EPA Method 8260B The detected MTBE concentrations ranged from 5 1µg/kg to 52 µg/kg The highest detected MTBE concentration was from soil collected at 30 feet bsg in the area of well MW-1,the location of highest dissolved MTBE Analytical results of soil samples collected from the January 2000 investigation are presented in ' Table 2 MTBE was detected in the grab water sample from boring B8 collected from 50 feet bsg, at 29 µg/1 by EPA Method 8260 MTBE was not detected in the other grab ground water samples Analytical results of the grab ground water sample collected from boring B-8 is presented in Table 3 On 11 December 2000, ground water monitoring wells MW-5 and MW-6 were installed on-site to assess the lateral extent of MTBE-impacted ground water Soil samples were not collected'dunng the well installations On 20 December 2000,ground water extraction well EW-1 was installed at the site for performance of a ground water pumping test Soil boring EW-1 was advanced vertically to depths of 30 feet bsg Boring EW-1 was single-completed as a 6-inch diameter ground water extraction well with screen intervals between 15 and 30 feet bsg Soil and ground water samples were not collected during this Y investigation On 29 March 2001,groundwater monitoring wells MW-5 and MW-6 and extraction well EW-1 were sampled TPH-g, TPH-d and BTEX compounds were not detected In the ground water samples collected and analyzed from wells MW-5, MW-6 and EW-1 MTBE was detected in the ground ' water samples collected from MW-5 and EW-1 at concentrations of 16 µg/1 and 2,200 µg/l, respectively MTBE was not detected in the sample collected from well MW-6 On 01 November 2002, ground water monitoring wells MW-7 and MW-8 were installed off-site to further assess the lateral extent of MTBE-impacted ground water Soil samples were not collected during the well installations On 09 December 2002, ground water monitoring wells MW-7 and MW-8 were sampled TPH-g, TPH-d and BTEX compounds were not detected in the ground water samples collected and analyzed ' Advanced GeoEnvironmental,Inc