WASHINGTON, Feb. 27 (TNSFR) -- The U.S. Environmental Protection Agency issued a final rule approving revisions to the Michigan state implementation plan to ensure better air quality in several regions. The action confirms that Allegan, Berrien and Muskegon Counties, Michigan, meet the reasonable further progress requirements for the 2015 ozone national ambient air quality standard.

As part of this approval, the agency validated updated 2017 base year emissions inventories for these . . .

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