Approval and Promulgation of Implementation Plans; Alabama, Mississippi and South Carolina; Certain Visibility Requirements for the 2008 Ozone Standards

The Environmental Protection Agency (EPA) is taking direct final action to approve portions of submissions from Alabama, Mississippi, and South Carolina for inclusion into each State's implementation plan. This action pertains to the Clean Air Act (CAA or Act) infrastructure requirements for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS). The CAA requires that each state adopt and submit a state implementation plan (SIP) for the implementation, maintenance, and enforcement of each NAAQS promulgated by EPA. These submissions are commonly referred to as "infrastructure SIP submissions". Specifically, EPA is approving the portions of the submissions from Alabama, Mississippi, and South Carolina that pertain to a certain visibility requirement related to the 2008 8-hour ozone infrastructure SIPs for each state. All other applicable infrastructure requirements for the 2008 8-hour ozone NAAQS associated with these States' infrastructure submissions have been or will be addressed in separate rulemakings.