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Superfund Innovative Technology Evaluation (SITE)

 EPA 540/S5-91/006

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

  Debris Decontamination System Technology
September 1991

This technology has been developed for on-site decontamination of metallic and masonry debris at CERCLA sites. The full scale DWS consists of dual 4,000 gallon spray-wash chambers connected to detergent solution and rinse water holding tanks. The debris is placed in one of the spray-wash chambers; 8,000 to 10,000 gallons of recycled, purified (charcoal or ion-exchange) water is used for the decontamination process. The entire system can be placed on three 48-foot flatbed semi-trailers and readily transported from site to site. The DWS can be applied to debris like scrap metal, masonry, stones or other solids, contaminated with hazardous chemicals such as pesticides, dioxins, polychlorinated biphenyls (PCB), or metals. This technology was modified based on two pilot tests; a full-scale field test was then conducted in August 1990, at the Shaver's Farm Superfund site in Walker County, Georgia. The contaminants of concern, benzonitrile and Dicamba on the surface of 55-gallon drums, were reduced from the average pretreatment concentrations of 4,556 and 23 µg/100 cm2 to 10 and 1µg/cm2, respectively.

Risk Mangement Research | Air and Climate Change Research | Water Research | Ecosystems Restoration Research | Land Risk Management Research | Technology: Sustainable Technologies Research, Environmental Technology Verification Program (ETV), and Technology Assessments

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