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. 02 May 1996 <br /> AGE Project No. 95-0108 <br /> Page 7 of 7 <br /> be collected and analyzed to perform mass-balance calculations and determine if the remaining <br /> hydrocarbon-impacted soil can be left in place with no significant effect on ground water. A Work <br /> Plan proposing the investigation should be submitted to the PHS-EHD. <br /> 4.2. STOCKPILED SOIL <br /> Presently, v'e6 , ubic yards of hydrocarbon-impacted soil is stockpiled on-site. <br /> Results from the most recent sampling of the stockpiled soil, performed by AGE on 14 April 1995, <br /> indicates that petroleum hydrocarbons continue to be present in the soil. It is our understanding that <br /> the soil is presently uncovered and aerating. However, because the primary contaminant in the <br /> stockpile soil is diesel(longer-chain hydrocarbons), it is unlikely that aeration alone will attain clean- <br /> up goals. <br /> We recommend resampling of the soil and,based upon results of the analyses, submittal of an ex-situ <br /> soil remediation plan, if necessary. <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.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 /> i <br />