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Clean Air Act Policy Change: How the End of the ‘Once In, Always In’ Policy Could Impact Major Source Emitters

On January 25, 2018, the EPA announced that it was withdrawing the “Once in, Always in” policy for the classification of major sources of hazardous air pollutants under section 112 of the Clean Air Act. With the new guidance, sources of hazardous air pollutants previously classified as “major sources” may … Read more »