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February 10, 2014
The Washington-based agency said in a news release that it concluded that the use of encapsulated coal combustion residuals (CCR) in those materials is appropriate because they are comparable to virgin materials or below the agency’s health and environmental benchmarks.
The EPA used newly developed methodology to evaluate the use in concrete as a substitute for portland cement, and the use of flue gas desulfurization gypsum as a substitute for mined gypsum in wallboard.
These two uses account for almost half of the total amount of coal ash that is beneficially used.
“The protective reuse of coal ash advances sustainability by saving valuable resources, reducing costs, and lessening environmental impacts, including reducing greenhouse gas emissions,” said Mathy Stanislaus, assistant administrator for EPA’s Office of Solid Waste and Emergency Response.
Coal ash is formed when coal is burned in boilers that generate steam for power generation and industrial applications. Slightly more than half of coal ash is disposed of in dry landfills and surface impoundments. The remainder of coal ash is used beneficially, as well as in mining applications.
Earlier this month the EPA set a date of Dec. 19 (prompted by a lawsuit) to make final disposal rules for coal ash as a nonhazardous waste material.
News Editor, Waste360
Allan Gerlat joined the Waste360 staff in September 2011 as news editor. He was the editor of Waste & Recycling News for the first 16 years of its history, and under his guidance the publication won 27 national and regional awards.
Before Waste & Recycling News, Allan worked at another Crain Communications publication, Rubber & Plastics News, which covers rubber product manufacturing. He began with the publication as associate editor and eventually became managing editor, a position he held for nine years.
Allan is a graduate of Ohio University, where he earned a BS in journalism. He is based in Sagamore Hills, in northeast Ohio.
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