The Environmental Protection Agency (EPA) is finalizing approval of a State Implementation Plan (SIP) revision submitted by the State of Georgia, through the Georgia Environmental Protection Division (GA EPD) on September 1, 2020. Specifically, EPA is finalizing approval of updates to the incorporation by reference of federal prevention of significant deterioration (PSD) new source review (NSR) regulations in the Georgia SIP. Based on the approval of this SIP revision, EPA is also converting the previous conditional approval regarding Georgia's infrastructure SIP's PSD elements for the 2015 Ozone National Ambient Air Quality Standard (NAAQS) to a full approval. EPA is finalizing approval of these changes pursuant to the Clean Air Act (CAA or Act).