EPA is finalizing a limited approval of a revision to the North Carolina State Implementation Plan (SIP) submitted by the State of North Carolina through the North Carolina Department of Environment and Natural Resources (NC DENR), Division of Air Quality (DAQ), on December 17, 2007. North Carolina's December 17, 2007, SIP revision addresses regional haze for the first implementation period. Specifically, this SIP revision addresses the requirements of the Clean Air Act (CAA or Act) and EPA's rules that require states to prevent any future and remedy any existing anthropogenic impairment of visibility in mandatory Class I areas (national parks and wilderness areas) caused by emissions of air pollutants from numerous sources located over a wide geographic area (also referred to as the "regional haze program"). States are required to assure reasonable progress toward the national goal of achieving natural visibility conditions in Class I areas. EPA is finalizing a limited approval of North Carolina's December 17, 2007, SIP revision to implement the regional haze requirements for North Carolina on the basis that this SIP revision, as a whole, strengthens the North Carolina SIP. In a separate action published on June 7, 2012, EPA finalized a limited disapproval of this same SIP revision because of the deficiencies in the State's regional haze SIP revision arising from the remand by the U.S. Court of Appeals for the District of Columbia Circuit (D.C. Circuit) to EPA of the Clean Air Interstate Rule (CAIR).