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ENGINEERING BULLETIN: IN SITU SOIL FLUSHING
Citation:
U.S. EPA. ENGINEERING BULLETIN: IN SITU SOIL FLUSHING. EPA/540/2-91/021 (NTIS PB92180025), 1991.
Impact/Purpose:
information
Description:
In situ soil flushing is the extraction of contaminants from the soil with water or other suitable aqueous solutions. Soil flushing is accomplished by passing the extraction fluid through in-place soils using an injection or infiltration process. Extraction fluids must be recovered and, when possible, are recycled. The method is potentially applicable to all types of soil contaminants. Soil flushing enables removal of contaminants from the soil and is most effective in permeable soils. An effective collection system is required to prevent migration of contaminants and potentially toxic extraction fluids to uncontaminated areas of the aquifer. Soil flushing, in conJunction with in situ bioremediation, may be a cost-effective means of soil remediation at certain sites [1,p. i] [2, p. 11].* Typically, soil flushing is used in conjunction with other treatments that destroy contaminants or remove them from the extraction fluid and groundwater.