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i, 17 July 2002 <br /> AGE-NC Project No. 97-0327 <br />' Page 10 of 10 <br />' 0 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 yield samples fully representative of shallow ground water <br /> conditions. <br />' • Dissolved TPH-d was detected in samples collected from wells MW-2, MW-3 and MW-4; <br /> previously, the greatest TPH-d concentrations have been detected from wells MW-2 and <br /> MW-3 while low concentrations have been detected from well MW-1. <br /> • Minor concentrations of BTEX had previously been detected in wells MW-1, MW-2 and <br /> MW-3 indicating a minor impact to ground water in the area assessed. <br /> • Low concentrations of dissolved MTBE, TBA and 1,2-DCA were detected in samples <br /> collected from wells MW-2, indicating a minor impact to ground water in the area assessed. <br /> 5.0. RECOMMENDATIONS <br />' Based upon data collected during the first quarter 2002, AGE recommends: <br /> Continued quarterly ground water monitoring. The next quarterly monitoring and sampling <br /> event is tentatively scheduled for June 2002. <br />' Submission of one ground water monitoring well sample to a microbiological laboratory for <br /> microbial enumeration and physicochemical analysis to evaluate the potential for adequate natural <br /> attenuation of petroleum hydrocarbons in ground water at the site. <br /> 6.0. LIMITATIONS <br /> 1 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 (soil and ground water samples) <br /> and 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 /> i <br /> Advanced GeoEnvironmental,lnc. <br />