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t <br /> Woodward-Clyde Consultar'As <br /> Fable 7.Comparison of Remediation Technologies <br /> Technology Description <br /> Advantages Disadvantages <br /> qce Consr4l Identify and repair Will minimize the Does not address <br /> leaks; monitor or possibility of future spetsentl in ground. <br /> remove underground hydrocarbon spills; <br /> presently <br /> storage tanks. Immediate app' <br /> Llndergound tank <br /> already removed from <br /> the site. <br /> Inrineration Thermal destruction of Destruction and Requires soil <br /> hydrocarbons in soil; removal efficiencies in excavation; permits <br /> I excess of 99.99% are required for air <br /> technologies include commonly achieved. emissions; emission <br /> rotary kiln Attractive in cases controls required to <br /> incinerators, fluidized where a relatively sustain combustion, <br /> bed combustors,and small quantity of highly supplementary fuel <br /> infrared moving bed toxic material has to be needed for any waste <br /> reactors. destroyed or where with heating value of <br /> there is a continous less than 2000.5000 <br /> stream and heat Btullb (virtually all <br /> lrans <br /> 10 <br /> recovery is possible. would��Ibelow this)., <br /> Clayey soils (typical A <br /> Callrans Shop 10 site) <br /> do not incinerate <br /> efficiently. <br /> Creation of a landfill Allows containment of Requires excavation. <br /> conforming to RCRA the soil with the highest May not be possible to <br /> standards on site, with hydrocarbon find a site conforming to <br /> leachate collection and concentrations, thereby RCRA requirements at <br /> monitoring system. removing Immediate the Caltrans Shop 10 <br /> danger to groundwater. site. Landfill site is <br /> precluded from other <br /> uses in the future. <br /> Monitoring must <br /> continue indefinitely. <br /> Thare remains a <br /> potential for future <br /> hydrocarbon migration. <br /> Could be disruptive to <br /> future site operations <br /> due to air emissions <br /> requirements. <br /> 19 <br />