Title: In Situ Flushing Site Profiles 
Resource Type: document --> case study 
Country: USA 
Year: 2006 
Availability: Web site only 
Author 1/Producer: US EPA 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Publisher: US EPA 
Report / download web link (=direct link): http://clu-in.org/products/isf/  
EUGRIS Keyword(s): Contaminated land-->Remediation options-->In situ treatment technologies
 
Short description: EPA has developed this Web site to summarize timely information about selected full- and field-scale applications of in situ flushing technologies. In situ flushing is the injection or infiltration of an aqueous solution into a zone of contaminated soil or groundwater, followed by the extraction and aboveground treatment of the elutriate (flushing solution mixed with contaminants). In some rare cases, the flushing solution and treated contaminants may be left in place. The solutions used for in situ flushing may consist of surfactants, cosolvents, acids, bases, oxidants, chelants, solvents, or water. Recent applications have also documented the use of cyclodextrin, a non-toxic modified sugar, as a flushing agent. These flushing solutions typically serve to increase the mobility and/or solubility of the contaminants. Many organic contaminants are susceptible to in situ flushing, including non-aqueous phase liquids (NAPLs), volatile organic compounds (VOCs), semivolatile organic compounds (SVOCs), polychlorinated biphenyls (PCBs), halogenated pesticides, dioxins/furans, cyanides and corrosives. Inorganic compounds such as volatile and nonvolatile metals, corrosives, cyanides, and radioactive contaminants may potentially be removed using in situ flushing. 
Link to Organisation(s): EPA Environmental Protection Agency
 
Submitted By: Professor Paul Bardos WhoDoesWhat?      Last update: 06/12/2006