EPA is finalizing its approval of most of the Nevada Regional Haze State Implementation Plan (SIP) that implements the Clean Air Act (CAA) Regional Haze Rule requiring states to prevent any future and remedy any existing man-made impairment of visibility in mandatory Class I areas through a regional haze program. EPA proposed to approve all parts of Nevada's SIP revisions on June 22, 2011 (76 FR 36450). This final approval applies to all aspects of Nevada's SIP except for that portion of Nevada's determination regarding the Best Available Retrofit Technology (BART) to reduce nitrogen oxide (NO<INF>X</INF>) emissions at the Reid Gardner Generating Station (RGGS). We will take action on BART for NO<INF>X</INF> at RGGS in a future notice.