The Environmental Protection Agency (EPA) is approving several changes to the North Carolina State Implementation Plan (SIP) submitted by the State of North Carolina, through the North Carolina Department of Environmental Quality (NCDEQ), on December 14, 2004, and March 1, 2016. The March 1, 2016, submission adds a new rule to the "Exclusionary Rules" of the North Carolina SIP, and the portion of the December 14, 2004, submission EPA is approving adds two new rules under a new section called "Permit Exemptions." This action is being taken pursuant to the Clean Air Act (CAA or Act).