The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of South Carolina, through the South Carolina Department of Health and Environmental Control (SC DHEC), on April 24, 2020. The SIP revision approves a non-substantive formatting change and the removal of an outdated sentence regarding test methods for gaseous fluorides from South Carolina's ambient air quality standards regulation. EPA is finalizing approval of these changes pursuant to the Clean Air Act (CAA or Act) and implementing federal regulations.