Revisions to the California State Implementation Plan, Sacramento Metropolitan Air Quality Management District

The Environmental Protection Agency (EPA) is finalizing a partial approval and partial disapproval of revisions to the Sacramento Metropolitan Air Quality Management District (SMAQMD or District) portion of the California State Implementation Plan (SIP). This action was proposed in the Federal Register on January 15, 2016 and concerns the District's demonstration regarding Reasonably Available Control Technology (RACT) requirements for the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). Under authority of the Clean Air Act (CAA or the Act), this action directs California to correct RACT deficiencies in the SMAQMD portion of the California SIP.