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FIn-Situ Remedial <br /> Technologies/ Administrative Retained <br /> Process Options Effectiveness Cost Feasibility or Refected <br /> Fixation/Stabilization tair to good very high fair rejected <br /> Biological Treatment <br /> 0 Bioventing good moderate good retained <br /> 0 Bioremediation good to moderate to high good retained <br /> excellent <br /> Chemical Treatment <br /> • Soil Flushing poor to fair high fair rejected <br /> Thermal Treatment <br /> 0 Vitnfication fair very high fair rejected <br /> Physical Treatment <br /> * Vapor Extraction poor moderate poor rejected <br /> S 2 4 Ex-Situ Treatment/Disposal <br /> Ex-situ technologies are those that can be applied only when the impacted soil has been <br /> excavated and moved to a treatment or disposal cell Several technologies are proven and <br /> available, and many are effective in terms of destroying or removing petroleum hydrocarbon <br /> constituents The following table summarizes the screening and selection of applicable ex-situ <br /> technologies and process options <br /> Ex-Situ Remedial Retained <br /> Technologies/ Administrative or <br /> Process Options Effectiveness Cost Feasibility Refected <br /> Fixation/Stabilization' fair very high fair rejected <br /> Biological Treatment <br /> Bioremediation' good moderate to high good retained <br /> Chemical Treatment <br /> 0 Soil Washing' fair very high fair rejected <br /> Landfill Disposal' good to excellent high good retained <br /> Thermal Treatment'2 <br /> Thermal Desorption good to excellent moderate to high good to retained <br /> excellent <br /> ' On-site 2 Off-site <br /> SAC127 10 11 <br /> DAMES &MOORE <br />