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' 17 April 2000 <br /> AGE-NC Project No. 95-0197 <br /> ' Page 3 of 4 <br /> ' feet per mile; the general ground water flow direction was calculated to be toward the north. <br /> In March 2000, the depths to first encountered ground water in wells MW-1, MW-2, MW-3, and <br /> ' MW-4 were approximately 1.5 to 5 feet below the tops of the well screens. Therefore, these wells <br /> are "properly screened", and yield samples representative of shallow ground water conditions._ <br /> 3.2. ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> ' Ground water samples were collected from wells MW-1, MW-2, MW-3, and MW-4 in March 2000 <br /> and submitted to a DHS-certified laboratory. TPH-g and TPH-d were not detected in any analyzed <br /> ground water samples. <br /> BTEX compounds and'MTBE (EPA Method 8020) were not detected in ground water samples <br /> collected from wells MW-1, MW-2, MW-3, and MW-4; <br /> ' DIPE was detected in theound water sample collected from MW-3 at a concentration of 1.0 <br /> �• p µg/l; <br /> . No other fuel-oxygenate analytes were detected above laboratory reporting limits. <br /> The analytical results of quarterly ground water samples are summarized in Table 2. The laboratory <br /> report (McCampbell Analytical Inc. Lab I.D. No. 34130 through 34133)and chain-of-custody form <br /> ' is included in Appendix B. <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> ' Based upon data collected during the March 2000 monitoring event,AGE concludes: <br /> Ground water monitoring data collected in the 'area of wells MW-1, MW-2, MW-3; and <br /> ' MW-4 indicated a ground water flow direction generally toward the north at a gradient of <br /> 0.002 ft/ft.(Figure 3). <br /> c Due to the low gradient at the site, slight variations in ground water measurements or <br /> changes of recharge/discharge of the local ground water could greatly modify ground water. <br /> flow direction. <br /> u MW-1, MW-2, MW.�3, and MW-4 are "properly screened", and yield samples fully . <br /> representative of shallow ground water conditions. <br /> ' o The dissolved petroleum hydrocarbon plume appears to be sufficiently contained within the <br /> . current array of ground water monitoring wells. <br /> ' Advanced GeoEnvironmental,Inc. <br />