Laserfiche WebLink
5 2 1 No-Action <br /> No technologies are applicable for this general response action <br /> 5 2 2 Limited Action <br /> Based on the nature and extent of known soil hydrocarbon impacts at the AFPC site, and the <br /> lack of groundwater impacts, the applicable technologies for this site are groundwater monitoring, <br /> zoning restrictions, site restriction, and containment measures <br /> Containment process options could potentially consist of vertical slurry walls, and/or surface <br /> capping to limit infiltration of water into the impacted soil and control movement of leached <br /> constituents Slurry wall systems are inappropriate because they cannot effectively restrict vertical <br /> migration of contaminants (the only real concern at this site) Therefore, capping with a program <br /> of groundwater monitoring is the only containment process option retained for development of <br /> remedial options <br /> 5 2 3 In-Situ Treatment <br /> A wide variety of remedial technologies are available for in-situ treatment of impacted soils <br /> Bioventing and bioremediation are potentially appropriate technologies for the AFPC site because <br /> both are potentially effective in destroying petroleum hydrocarbons in soil, both are potentially cost- <br /> effective, and both are proven technologies, so regulatory agency approval should be available The <br /> other in-situ treatment technologies are generally only cost-effective when applied to highly toxic or <br /> difficult to treat constituents, and/or heavily impacted sites where less expensive technologies are not <br /> expected to achieve the remedial goals Vapor extraction, although an attractive option for removal <br /> of BTEX, is not effective in removing the less volatile components of diesel fuel, which have higher <br /> molecular weights The following table summarizes the screening of in-situ treatment technologies <br /> and process options <br /> SAC127 10 10 <br />�� DAMES & MOORE <br />