The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of North Carolina, through the North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), with letters dated September 18, 2009, September 16, 2016, and July 10, 2019. These SIP revisions amend several of North Carolina's rules regarding construction and operating permits. This action is being finalized pursuant to the Clean Air Act (CAA or Act).