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10 May 1999 <br /> • AGE-NC Project No 95-0111 <br /> Page 6 of 6 <br /> low end of the range of concentrations previously detected <br />' • Relatively lugh concentrations of TPH-d in MW-4 and MW-5 may demonstrate the presence <br /> of a persistent plume of dissolved diesel fuel in ground water along the north edge of the site <br />' • The documented petroleum impacted ground water is limited to the northern edge of the site <br /> and off the site in the southern portion of Grant Line Road <br /> I <br /> 5.0. RECOMMENDATIONS <br /> Based onresent site conditions AG en <br /> p E recommends <br /> • Quarterly monitoring and sampling should continue at the site <br /> • Discontinue analysis for fuel additives by EPA Method 8260 Modified <br />' The next quarterly monitoring should be scheduled tg;une 1999 On the collection of one- <br /> year of monitoring data for the newly installe, closure criteria for the site should be <br />�. determined <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 /> I conditions at the site for the purpose of this investigation were made from a limited number of <br /> available data points (i a soil samples and ground water monitoring well samples) and subsurface <br /> conditions may vary away from these data points No other warranty, expressed or implied, is made <br /> as to the professional recommendations contained in this report <br /> Advanced GeoEnvironmental Inc. <br /> I <br />