Approval and Promulgation of Implementation Plans; South Carolina; 110(a)(1) and (2) Infrastructure Requirements for the 1997 8-Hour Ozone National Ambient Air Quality Standards

EPA is taking final action to approve the December 13, 2007, submission submitted by the State of South Carolina, through the South Carolina Department of Health and Environmental Control (SC DHEC) as demonstrating that the State meets the state implementation plan (SIP) requirements of sections 110(a)(1) and (2) of the Clean Air Act (CAA or the Act) for the 1997 8-hour ozone national ambient air quality standards (NAAQS). Section 110(a) of the CAA requires that each state adopt and submit a SIP for the implementation, maintenance, and enforcement of each NAAQS promulgated by the EPA, which is commonly referred to as an "infrastructure" SIP. South Carolina certified that the South Carolina SIP contains provisions that ensure the 1997 8-hour ozone NAAQS is implemented, enforced, and maintained in South Carolina (hereafter referred to as "infrastructure submission"). South Carolina's infrastructure submission, provided to EPA on December 13, 2007, addressed all the required infrastructure elements for the 1997 8-hour ozone NAAQS. Additionally, EPA is correcting an inadvertent error and responding to adverse comments received on EPA's March 17, 2011, proposed approval of South Carolina's December 13, 2007, infrastructure submission.