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' 10 August 2006 <br /> • AGE-NC Project No 98-0497 <br />' Page 4 of 4 <br />' • Ground water elevations at the site averaged approximately 37 42 feet below MSL, <br /> indicating an average increase of 3 67 feet since the last monitoring event In February 2006 <br /> • The ground water was Inferred to be flowing west-southwest at an approximate hydraulic <br />' gradient of 0 001 ft/ft <br /> • TPH-g and TPH-d were detected in well MW-1 at concentrations of 11,000 µg11 and <br />' 60,000 µg11, respectively, however, the reported TPH-g concentrations were mostly in the <br /> diesel range <br />' • Comparing the ground water sample results from this quarter and the previous quarter, <br /> TPH-d concentrations have increased in well MW-1 (from 37,000µg1! to 60,000 µg/1) and <br /> remained non-detect in the samples from the other wells <br />' The hydrocarbon-impacted ground water plume appears to be limited to the former UST area <br /> immediately surrounding well MW-1 <br /> 5.0. RECOMMENDATIONS <br />' • Based on the results of this and previous investigations, AGE recommends <br />' • The continuation of quarterly monitoring and sampling of the ground water well network <br /> The third quarter 2006 monitoring event is scheduled for August 2006 <br />' • Initiation of the recommended batch removal at MW-I <br />' 6.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br />' environmental consultants practicing in this or similar localities The findings were based mainly <br /> upon analytical results provided by an independent laboratory Evaluations of the hydrogeologic <br /> t conditions at the site have been made from a limited number of available data points (I e , ground <br /> water samples)and subsurface conditions may vary away from these data points No other warranty, <br /> expressed or implied,is made as to the professional interpretations,opinions,and recommendations <br />' contained in this report <br /> • <br /> Advanced GeoEnwonmental,Inc <br /> 1 <br />