Coal ash swirls on the surface of the Dan River following one of the worst coal-ash spills in U.S. history into the river in Danville, Va., in February 2014. The Environmental Protection Agency wants to ease restrictions on coal ash and wastewater from coal plants.

The Environmental Protection Agency would give coal plants more time to close unlined coal ash ponds, and ease rules on wastewater. Opponents say that prolongs the risk of toxic spills.

(Image credit: Gerry Broome/AP)

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