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Leaching Test Relationships, Laboratory-to-Field Comparisons and Recommendations for Leaching Evaluation using the Leaching Environmental Assessment Framework (LEAF)
Citation:
Kosson, D., H. van der Sloot, A. Garrabrants, AND P. Seignette. Leaching Test Relationships, Laboratory-to-Field Comparisons and Recommendations for Leaching Evaluation using the Leaching Environmental Assessment Framework (LEAF). US Environmental Protection Agency, Cincinnati, OH, EPA/600/R-14/061, 2014.
Impact/Purpose:
To evaluate how laboratory and field leachate data compare to determine how well the Leaching Environmental Assessment Framework predicts environmental release for seven material types tested in ten different field evaluations: (i) coal fly ash, (ii) fixated scrubber sludge (a combination of coal fly ash with acid gas scrubber residue and lime), (iii) municipal solid waste incinerator bottom ash, (iv) a predominantly inorganic waste mixture comprised of residues from soil cleanup, contaminated soil, sediments, construction and demolition waste and small industry waste, (v) municipal solid waste, (vi) cement-stabilized municipal solid waste incinerator fly ash, and (vii) portland cement mortars and concrete.
Description:
This report presents examples of the relationships between the results of laboratory leaching tests, as defined by the Leaching Environmental Assessment Framework (LEAF) or analogous international test methods, and leaching of constituents from a broad range of materials under disposal and beneficial use scenarios. A framework is defined for interpretation of laboratory testing results, including approaches for comparison of laboratory testing of fresh or field aged materials and leachate results from field applications. This report also illustrates the use of chemical speciation modeling for interpretation of leaching data and facilitated evaluation of scenarios beyond the conditions of laboratory testing. This report then provides recommendations for selection and use of the LEAF test methods, data interpretation, and chemical speciation-based models as tools for environmental leaching assessment.
URLs/Downloads:
http://www.vanderbilt.edu/leaching/wordpress/wp-content/uploads/600r14061-Lab-to-Field-LEAF1.pdf