DONALD WHO?:

In March, as part of Scott Pruitt's aggressive campaign to roll back federal regulations, the Environmental Protection Agency proposed relaxing standards for storing potentially toxic waste produced by coal-burning power plants.

EPA officials cited a study indicating that forcing utilities to get rid of unlined coal ash ponds too quickly could strain the electrical grid in several regions of the country.

But when environmental advocates scrutinized the specifics, they discovered a problem: The evidence cited was not established scientific research. Instead, the agency was relying on a four-page document by the utility industry's trade association, the Edison Electric Institute, which has acknowledged that its conclusions were not "part of or a summary of a larger study."

Lisa Evans, a lawyer for the group Earthjustice, was among the advocates who seized on that omission, as well as on gaps in technical data and other evidence, to argue that the agency's action was ill-advised and legally flimsy.

"The record does not support the proposal," Evans said, noting that the Obama administration's 2015 requirement on coal ash drew on years of public input and peer-reviewed scientific studies. "I've never seen a rule like this, in terms of the thinness of the evidence."

The coal ash proposal is among the more than half-dozen major EPA moves that have been snagged by procedural and legal problems. The delays threaten to tarnish Pruitt's image as an effective warrior in President Trump's battle against federal regulations, a reputation that has so far saved the EPA administrator his job amid an array of investigations into ethical and management lapses.

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