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v <br /> 30 May 1996 <br /> AGE-NC Project No. 96-0224 <br /> Page 5 of 5 <br /> - and calculate the volume of soil impacted by the plume. However, Ms. Turkatte indicated during a <br /> discussion at the site that based on the nature of the hydrocarbon contaminant and site characteristics, <br /> it would not be necessary to fully define the lateral extent of the heating oil plume, but only its vertical <br /> extent to get closure. This being the case, Ms. Turkatte required only the single probe boring to <br /> assess the heating oil plume. <br /> ,r 6.0. CONCLUSIONS AND RECOMMENDATIONS <br /> The volume of remaining impacted soil in the vicinity of the heating oil tank is estimated to be 233 <br /> cubic yards. Analytical results of soil samples collected from the probe borings indicate that low <br /> concentrations of gasoline and fuel oil remain near the UST areas. Ground water depth at the site is <br /> thought to be in excess of 70 feet bsg. Based upon the concentrations detected and limited extent of <br /> �• hydrocarbon-impacted soil, it is unlikely that remaining impacted soil poses a significant threat to <br /> ground water integrity at the site. We recommend site closure certification for the property. <br /> V <br /> 7.0. 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 geologiclhydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of available <br /> data points (i.e. soil samples) and subsurface conditions may vary away from these data points. No <br /> other warranty, expressed or implied, is made as to the professional recommendations contained in <br /> this report. <br />