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' 13 November 2000 <br /> • AGE-NC Project No 99-0624 <br />' Page 4 of 4 <br />' • BTEX compounds were detected in the water samples collected from all four monitoring <br /> wells, the MW-2 sample had the highest concentrations <br />' • Utilizing EPA Method 8260M, MTBE was detected at concentrations of 2,300 µg11 and 6 8 <br /> µg/l in ground water samples from MW-2 and MW-3,respectively MTBE was not detected <br /> in samples collected from MW-I and MW-4 The data shows that MTBE-impact to ground <br />' water does not extend to the west to MW-1 or to the north to MW-4 in shallow ground water <br /> at this time <br />' • The lateral extent of dissolved hydrocarbon-and MTBE-impacted ground water has not been <br /> delineated northeast, east, and south of MW-2 <br />' 5.0. RECOMMENDATIONS <br />' Based on the results of this investigation, AGE recommends <br /> • Continued quarterly monitoring of wells on-site <br /> 1 Additional soil and ground water investigation focused in the down gradient direction, <br /> especially in the area of MW-2 and the UST and dispenser systems,to determine the lateral <br />' extent of petroleum hydrocarbon-impact and MTBE-impact to soil and ground water The <br /> next quarterly monitoring event is scheduled for December 2000 <br /> 1 <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 upon <br />' analytical results provided by an independent laboratory Evaluations of the geologic/hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points (I a ground water samples) and subsurface conditions may vary away from <br />' these data points No other warranty, expressed or implied, is made as to the professional <br /> recommendations contained in this report <br /> 1 <br /> 1 <br /> 1 <br /> Advanced GeoEnvironmental,Inc <br /> 1 <br />