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l <br /> I <br /> 4.2 Laboratory Results <br /> No petroleum hydrocarbons were detected in any of the samples <br /> (Appendix A) . <br /> 5.0 RECOMMENDATIONS <br /> TPH and BTE&X concentrations have generally decreased since the <br /> first samples were obtained in June 1992 , and no contamination was <br /> detected in the last two sampling events. It appears that natural <br /> processes have resulted in mitigation of the groundwater <br /> contamination that was detected in June and September. Although <br /> groundwater has remained in contact with soil that showed very low <br /> levels of residual contamination at the time of well installation <br /> in June 1992 (Table 6) , groundwater has not remained contaminated <br /> in either MW-2 or MW-3. Geological Audit concludes that the <br /> residual soil contamination has not impacted groundwater and poses <br /> no significant threat. No further action is recommended at this <br /> time. <br /> 6. 0 LIMITATIONS <br /> Our professional services were performed using that degree of care <br /> and skill ordinarily exercised by environmental consultants <br /> practicing in this or similar localities. The findings were based <br /> upon analytical results provided by an independent laboratory. <br /> Evaluations of the geolog ic/hydrogeologic conditions at the site <br /> for the purpose of this investigation are made from a limited <br /> number of available data points (i.e. monitoring wells) and <br /> subsurface conditions may vary away from these data points. No <br /> other warranty, expressed or implied, is made as to the <br /> professional recommendations contained in this report. <br /> rThe opportunity to prepare this report is greatly appreciated. <br /> Please feel free to call our office if you have any questions. <br />' Sincerely, <br /> GEOLOGICAL AUDIT SERVICES, INC. <br /> 1 <br />' Bob Marty <br /> Project Geologist t} yc <br /> a <br /> n� 347 <br /> Victor B. Cherven <br /> Project Geologist <br /> Registered Geologist #3475 ���OFCP101 �~ <br /> 3 L <br />