EPA Mercury Rule Revision Sparks Fresh Legal Challenge

Law360 (May 22, 2020, 2:36 PM EDT) -- A coal company on Friday petitioned the D.C. Circuit to undo Obama-era limits on coal-fired power plants' mercury emissions, after the U.S. Environmental Protection Agency reversed the justification underpinning the rule imposing those limits.

On the same day that the EPA's revised cost-benefit analysis of its Mercury and Air Toxics Standards was published in the Federal Register, coal producer Westmoreland Mining Holdings LLC lodged a petition seeking review of that analysis.

The petition also seeks review of the MATS rule itself, the previous cost-benefit analysis the EPA put out at the U.S. Supreme Court's behest, and the agency's original 2000 finding...

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