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r 1 <br /> 5 July 1995 <br /> AGE-NC-95-0124 <br /> Page 6 of 6 <br /> hydrocarbons is also not very likely because a confining layer (clayey soil) is located at depths <br /> between 20 and 30 feet on-site It is not likely that the remammg impacted soil represents a significant <br /> health threat <br /> Therefore, we recommend the site for closure certification based upon the following ' <br /> 1 The volume of remaining impacted soil at the site is estimated to be 88 cubic yards <br /> Total volume of remaining hydrocarbons(as gasoline) is estimated to be 2 5 gallons <br /> 2 Current ground water depth at the site is estimated to be 55 to 60 feet <br /> 3 A confining clayey soil is located beneath the former UST area at depths between 20 r <br /> and 30 feet, making vertical migration of hydrocarbons in the soil unlikely <br /> 4 In-situ remediation of the remaining soil at the site is not feasible or cost-effective <br /> • 5.0. 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 /> conditions at the site for the purpose of this investigation are made from a limited number of available <br /> data points(i a soil bonngs and samples) and subsurface conditions may vary away from these data <br /> points No other warranty, expressed or implied, is made as to the professional recommendations <br /> contained in this report <br />