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Research Project: Enhancing Production and Ecosystem Services of Horticultural and Agricultural Systems in the Southeastern United States

Location: Soil Dynamics Research

Title: Status of US-EPA risk evaluation of FGD-gypsum uses in agriculture

item Torbert, Henry - Allen

Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: 11/10/2019
Publication Date: 11/10/2019
Citation: Torbert III, H.A. 2019. Status of US-EPA risk evaluation of FGD-gypsum uses in agriculture[abstract]. American Society of Agronomy Meetings. CD-ROM.

Interpretive Summary:

Technical Abstract: The EPA is conducted an assessment of the regulation associated with handling of all coal combustion Residues (CCR), including Flue Gas Desulfurization Gypsum (FGDG). Changes in the new rules primarily focused on managing of CCR in landfills and holding ponds, but it did cover the utilization of FGDG for “beneficial use”. EPA did conclude that CCRs were not Hazardous Solid Wastes in 2016 and established clear rules for encapsulated uses of FGDG. However, the unencapsulated uses, of which agriculture use is included. requires a comprehensive risk evaluation for FGDG, which is still in progress. This evaluation considers all possible pathways for movement of chemical constituents in FGDG to any possible receptor where harm might occur. The rule provides guidelines for ongoing use of FGDG, but also states that “The Agency has also been working with the U.S. Department of Agriculture to address the risks associated with the agricultural use of CCR”. This risk evaluation is ongoing, and details regarding the progress will be addressed in the presentation.