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20 December 2004 <br /> • AGE-NC Project No 98-0511 <br /> Page 4 of 4 <br /> MW-5 at concentrations of 3 1 gg/l and 11 gg/l, respectively The detected concentrations <br /> of benzene and xylenes were above the DHS' maximum contaminant level (MCL) for these <br /> contaminants in drinking water <br /> • MTBE was detected in ground water samples collected from wells MW-1, MW-3, and <br /> MW-5 at concentrations as high as 40 µg/l, above the Secondary MCL(5µg/1) for MTBE in <br /> drinking water <br /> • Analytes of concern were not detected above laboratory reporting limits in ground water <br /> samples collected from wells MW-2, MW-4, and MW-6 through MW-8 <br /> • Hydrocarbon-impacted soil and ground water are not defined laterally along the up-gradient, <br /> eastern porton of the site <br /> 5.0. RECOMMENDATIONS <br /> Based upon data collected from the site, AGE recommends <br /> lie • Continued quarterly ground water monitoring, and <br /> • Preparation of a Remedial Action Work Plan to propose appropriate remedial alternatives <br /> for soil and ground water at the site <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 field <br /> measurements and analytical results provided by an independent laboratory Evaluations of the <br /> hydrogeologic conditions at the site for the purpose of this investigation are made from a limited <br /> number of available data points(i a soil samples,ground water samples)and subsurface conditions <br /> may vary away from these data points No other warranty, expressed or implied, is made as to the <br /> Iprofessional interpretations, opinions, and recommendations contained in this report <br /> Advanced GeoEnvi ron mental,Inc <br /> I <br />