EPA Guidance on Use of the Leaching Environmental Assessment Framework (LEAF)

摘要

Guidance to be released for use of LEAF data in the next year. The LEAF test methods... 1. Can be used to evaluate leaching behavior of a wide range of materials using a tiered approach that considers the effect of leaching on pH, liquid-to-solid ratio, and physical form 3. Have been found to provide data needed for assessing release behavior under range of field conditions for use and disposal scenarios 4. Were used in evaluating use of fly ash as substitute for Portland cement in production of cementitious materials.