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27 January 2004 AGE-NC Project No. 97-0360 Page 3 of 9 P5 at concentrations as high as 3,400 mg/kg(P4-10). Fuel oxygenated compounds were not detected at or above laboratory reporting limits. — Grab ground water samples were collected from borings P I through PS, and were submitted to a DHS-certified laboratory for analysis as noted above. TPH-g was detected in the ground water samples collected from PI, P2, and P4 at concentrations of 3,100 pg/l, 1,300 ug/l,and 2,100 pg/i,respectively. TPH-d was detected in the ground water samples collected from P 1 through P8 at concentrations as high as 2,900,000 fLg/l (P4). BTEX compounds were detected in the ground water samples collected from P 1 and P4 at concentrations ranging as high as�5.5 gg/1; dissolved benzene was detected at concentrations as high as 3.7 ug/I (P1). Dissolved MTBE was detected in the ground water sample from P4 at a concentration of 8.2 µg/l utilizing EPA Method 8020 and confirmed at a concentration of 7.6 tig/l utilizing EPA Method 8260. No other fuel oxygenated compounds were detected at or above laboratory — reporting limits during the laboratory analysis of the ground water samples. Analytical results of soil samples are summarized in Table 2. Analytical results of ground water samples are summarized in Table 3. Field procedures and sample results were outlined in AGE's Prelinninar-v Investigation and Evaluation Report, dated 21 September 2000. 31 Januay,2002 - six soil borings were advanced at the site. Pilot borings MW-I through MW-5 were completed as ground water monitoring wells. Monitoring wells MW-1,MW-3, MW-4, and MW-5 were completed using two-inch diameter PVC casing with 0.020-inch slotted screens installed from approximately 5 feet to 20 feet bsg. MW-2 was completed in a similar manner and screened from approximately 30 feet to 35 feet bsg. Blank casing was extended from the top of the screen interval to the surface of each well. Pilot boring EW-1 was completed as a ground water extraction well using six-inch diameter PVC casing with 0.020-inch slotted screen installed from approximately 5 feet to 20 feet bsg. Blank casing was installed from the top of the screen interval to surface grade. TPH-g was detected in the soil samples collected from MW-1, MW-3, MW-4, MW-5 and EW-1 at 10 feet bsg at concentrations as high as 160 mg/kg. TPH-d was detected in the same samples, with the exception of EW-1, at concentrations as high as 3,800 mg/kg. No other analytes were detected at or above laboratory reporting limits in the soil samples analyzed. Analytical results of soil samples are summarized in Table 2. Analytical results of ground water samples are summarized in Table 5. Field procedures and sample results were outlined ill AGE's Monitoring Well Installation and Quarterly Report-First Quarter 2002, dated 03 ,lune 2002. — a 13 May 2002 - ground water levels were measured in monitoring wells MW-1 through M W-5 and extraction well EW-1 and approximately ranged from 7.89 feet to 9.42 feet below the tops of the well casings;ground water flow direction at the site was inferred to be flowing — towards the east-southeast at an approximate gradient of 0.0006 feet/feet. TPH-g was Advanced CcoEm ironmental,Iue.