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' 20 May 2005 <br /> • AGE-NC Project No. 97-0327 <br /> Page 4 of 5 <br /> ' 4.4. SUMMARY AND CONCLUSIONS <br /> The implications from the January 2004 ground water monitoring event are as follows: <br /> • Ground water flow direction at the site was inferred to be toward the south-southeast at a <br /> gradient of 0.002 ft/ft or less; previous ground water monitoring events at the site have <br /> determined the prevalent ground water flow direction to be towards the south-southeast. <br /> • 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 have modified ground water <br /> flow direction. <br /> • The increase of ground water elevation between September 2003 and January 2004 is <br />' probably due to seasonal fluctuation. <br /> • The ground water elevation at the site was within the screened intervals of wells MW-1, <br />' MW-2, MW-3 and MW-4, which should yield samples fully representative of shallow <br /> ground water conditions. <br /> • Low concentrations of dissolved TPH-g and BTEX have previously been and currently <br />' • detected from well MW-2 indicating that only a minor TPH-g and BTEX-impact to ground <br /> water in the area assessed. <br />' • Low concentration of dissolved TPH-d have previously been detected from wells MW-1 <br /> through MW-4. During this sampling,wells MW-2 and MW-4 indicating that only a minor <br /> TPH-d-impact to ground water in the area assessed. / <br /> • A low concentration of dissolved MTBE continues to be detected in the sample collected <br /> from well MW-2; MTBE was also previously detected from well MW-1 indicating only a <br />' minor MTBE-impact to ground water in the area assessed. <br /> • Low concentrations of 1,2-DCA continue to be detected in the samples collected from wells <br /> MW-1 and MW-4 indicating a minor impact to ground water in the area assessed. <br />' • Grab water samples collected from domestic water wells located at 451 and 452 North <br /> Lillian Avenue were non detect for TPH-g, TPH-d, BTEX, MTBE, DIPE, ETBE, TAME, <br />' TBA 1,2-DCA and EDB. J <br />' _ Advanced GeoEnvironmental,Inc. <br />