Air Plan Approval; Michigan; Emissions Statement Program and Base Year Emissions Inventory

The Environmental Protection Agency (EPA) is partially approving portions of State Implementation Plan (SIP) revisions submitted by the State of Michigan on December 18, 2020. Specifically, EPA is approving the 2015 ozone National Ambient Air Quality Standards (NAAQS) base-year emissions inventory for Detroit area as meeting the requirements of the Clean Air Act (CAA). EPA is also approving revisions to Michigan's emissions statement program as meeting the requirements of the CAA.