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22 July 2003 <br /> AGE-NC Project No. 97-0327 <br /> Page 4 of 4 <br />' A low concentration of dissolved TPH-g was detected in the sample collected from well <br /> MW-2 indicating only a minor TPH-g-impact to ground water in the area assessed. TPH-d <br /> was detected in samples collected from wells�MW-2, MW-3 and MW-4. <br /> W'I <br /> • Low concentrations of dissolved ethylbenzene and xylenes were detected in well MW-2 <br /> indicating a minor ethylbenzene and xylene-impact to ground water in the area assessed. <br /> 'Im /Ov <br /> • Low concentrations of dissolved MTBE aat-Tl continue to be detected in the sample <br />' collected from well MW-2 indicating only a minor MTBE=impact to ground water <br /> in the area assessed. <br />' • Low concentrations of 1,2-DCA continue to be detected in the samples collected from wells <br /> MW-1, MW-2 and MW-4 indicating only a minor 1,2-DCA-impact to ground water in the <br /> area assessed. <br />' 5.0. RECOMMENDATIONS <br /> . Based upon data collected during the June 2003 ground water monitoring and the site assessment <br /> AGE recommends preparation of a closure summary report for the site. Generally, only low <br /> concentrations of petroleum constituents have been reported in wells MW-1 through MW-4, <br /> indicating that there is only a minor mass of dissolved petroleum hydrocarbons,which has remained <br /> laterally stable within the well network. The low detectable concentrations of contaminants in the <br /> soil in relation to the ground water table depth, poses a low risk to the ground water at the site. 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. Evaluation of the geologic/hydrogeologic <br /> conditions at the site for the purpose of this investigation was made from review of previous <br /> consultants reports and a limited number of available data points (ground water samples) and <br />' subsurface conditions may vary away from these data points. No other warranty, expressed or <br /> implied, is made as to the professional interpretations, opinions and recommendations contained in <br /> this report. <br /> • <br />' Advanced GcoEnvironmental,Inc. <br /> 1 <br />