The Environmental Protection Agency (EPA) is finalizing approval of two State Implementation Plan (SIP) revisions dated July 30, 2012, and January 12, 2018, submitted by the State of North Carolina through the North Carolina Department of Environmental Quality (NCDEQ). These SIP revisions are related to the State's Prevention of Significant Deterioration (PSD) permitting program requirements for greenhouse gases (GHGs). EPA has determined that the July 30, 2012, and January 12, 2018, SIP revisions are consistent with the Clean Air Act (CAA or Act).