Approval, Disapproval and Promulgation of Implementation Plans; State of Nebraska; Regional Haze State Implementation Plan; Federal Implementation Plan for Best Available Retrofit Technology Determination

EPA is finalizing a partial approval and partial disapproval of a revision to the State Implementation Plan (SIP) for Nebraska, submitted by the State of Nebraska through the Nebraska Department of Environmental Quality (NDEQ) on July 13, 2011, that is intended to address regional haze for the first implementation period. This revision is intended to address 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 located over a wide geographic area (also known 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 also promulgating a Federal Implementation Plan (FIP) relying on the Transport Rule to satisfy BART for sulfur dioxide (SO<INF>2</INF>) at one source to address deficiencies in the State's plan.