EPA confirms fly ash’s concrete suitability, benign chemical profile

Sources: U.S. Environmental Protection Agency; American Coal Ash Association, Farmington Hills, Mich.; CP staff

Five years after proposing potentially onerous regulations for coal combustion residuals (CCR) management and disposal—triggering an uproar across the concrete industry regarding ASTM C618-grade fly ash marketability—EPA has released an evaluation of recycled CCR almost certain to put lingering concerns to rest.

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