The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision to the Mecklenburg County portion of the North Carolina SIP, hereinafter referred to as the Mecklenburg Local Implementation Plan (LIP). The revision was submitted by the State of North Carolina, through the North Carolina Division of Air Quality (NCDAQ), on behalf of Mecklenburg County Air Quality (MCAQ) via a letter dated April 24, 2020. The revision includes updates to various emission control standards contained in the Mecklenburg County Air Pollution Control Ordinance (MCAPCO) incorporated into the LIP. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act).