Weekly Focus

EPA Doubles Down On Its Broad View Of ‘Appropriate’ MATS Regulation

March 9, 2023
EPA’s threshold rule renewing its finding that it is “appropriate and necessary” (A&N) to regulate power plants’ air toxics emissions hinges on a broad legal interpretation under which the agency need not provide a full accounting of the mercury and air toxics standards’ (MATS) projected benefits, even as EPA tries to measure more of the air toxics benefits. The final rule , signed by Administrator Michael Regan Feb. 15 and published in the Federal Register March 6, restores the...

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