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ri I' <br /> y I <br /> a 1, L <br /> F 16 <br /> I <br /> Project No S8080-06-02 <br /> May 5, 1995 <br /> Based on an evaluation of the soil remediation alternatives presented in this PAR,targeted soil vapor <br /> extraction will provide the most cost effective remediation for the impacted soil beneath the site <br /> As discussed in this PAR, targeted vapor extraction would involve targeting the portions of the <br />' vadose zone plume impacted with BTEX Remediation of BTEX impacted soil would include the <br /> removal of BTEX and TPHg from the deepest portion of the plume (beneath the southern portion <br /> of the site) and would increase the distance between remaining shallow impacted soil and <br />' groundwater <br /> Geocon recommends the design and installation of a soil VES capable of extracting soil gas from <br />' existing onsite extraction wells VW-3, VW-4 and VW-5 Pilot test data indicates that extraction <br /> from wells VW-3, VW-4 and VW-5 will provide the ability to remove BTEX and TPHg from the <br /> soil zones targeted for remediation thereby reducing the potential for future groundwater impacts <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r <br /> r <br /> _3- <br /> r <br />