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Leaching Environmental Assessment Framework to Evaluate Beneficial Use and Disposal Decisions
Citation:
Thorneloe, S. Leaching Environmental Assessment Framework to Evaluate Beneficial Use and Disposal Decisions. 37th Annual EPA-A&WMA Information Exchange, Research Triangle Park, NC, November 27 - 28, 2012.
Impact/Purpose:
To update the participants for the 37th Annual EPA-A&WMA Information Exchange on the completion, validation, adoption of the Leaching Environmental Assessment Framework (LEAF) to identify leaching characteristics for the range of field conditions that coal combustion residues and other secondary materials land disposed or used in beneficial use in engineering and commercial applications.
Description:
LEAF test methods are available for use to characterize the leaching potential over a range of conditions (i.e., pH, liquid-to-solid ratio, and waste form). LEAF characterization tests can be used to evaluate a range of materials to identify leaching behavior across a range of field conditions for disposal and beneficial use. Supporting software is available for implementation including (1) LEAF tesing method templates and (2) LeachXS-Lite for data entry, analysis, visualization, and reporting. Implementation of LEAF methods provide a source term to distinguish between individual CCRs or other materials based on their leaching characteristics. LEAF Methods have been released on EPA’s web site: ite:?http://epa.gov/wastes/hazard/testmethods/sw846/new_meth.htm