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I - <br /> I14 August 2000 <br /> • AGE-NC Project No 95-0128 <br /> Page 6 of 10 <br />' through MW5 was approximately 33 feet, 26 feet, 25 feet, 0 70 feet, and 0 65 feet over the tops of <br /> the wells' screened intervals, respectively The ground water table occurred within the screened <br /> intervals of the other wells monitored,with the exception of deeply screened monitoring wells MW- <br />' 1 through MW-3 <br /> Ground water was inferred to be flowing approximately N 12'E in both the properly screened wells <br />' and the deeply screened wells (Figure 3) The gradient for the four properly screened wells was <br /> approximately 0 0018 ft/ft The gradient determined for the three drowned wells was approximately <br /> 0 0012 ft/ft <br /> On 20 June 2000,the average ground water elevation in wells MW-8 through MW-12 was calculated <br /> to be -13 68 feet msl The ground water table occurred within the screened intervals of the wells <br /> I monitored, with the exception of deeply screened monitoring wells MW-1 IB and MW-12B Ground <br /> water was inferred to be flowing approximately N 20°W 1n the properly screened wells (Figure 4) <br /> The northwestern gradient was approximately 0 002 ft/ft <br /> I . 33 ANALYTICAL RESULTS FROM SOIL SAMPLES <br /> A total of 13 soil samples were analyzed for TPH-g, TPH-d, BTEX and seven fuel additives by EPA <br /> Method 8260 Modified <br /> • TPH-g, TPH-d, and BTEX compounds were not detected above laboratory reporting limits <br /> Iin any of the soil samples collected and analyzed <br /> • MTBE was detected in 10 of the soil samples collected from borings MW8, MW9, MW 11, <br /> and MW 12 at concentrations as high as 390 ,ug/kg (MW 12-40) by EPA Method 8260 No <br /> Iother oxygenates were detected in the soil sample analysis, these concentrations are most <br /> likely reflective of impacted ground water in the pore spaces of the soil rather than adsorbed <br /> I MTBE Analytical results of soil samples are summarized on Table 2 and Table 3 The <br /> laboratory reports (MAI Laboratory I D No 40169-40181), quality assurance and quality <br /> control (QA/QC) report and sham-of-custody forms are included in Appendix E <br /> • Cross sections with the MTBE concentrations posted are depicted in Figures 5 and 6 <br /> I <br /> Advanced CeoEnvirnnmental Inc <br />