EPA is finalizing full approval of revisions to the Nevada Department of Conservation and Natural Resources portion of the Nevada State Implementation Plan (SIP). This action was proposed in the Federal Register on March 12, 2007 (72 FR 10960), and approves amended visible emissions and particulate matter regulations as well as requests for rescission of certain regulations related to visible emissions and particulate matter. The intended effect is to approve regulations for inclusion into the applicable plan and to rescind unnecessary provisions from the applicable plan. We are approving these regulations and rescissions in order to regulate emission sources under the Clean Air Act as amended in 1990 (CAA or the Act) and to update the applicable SIP.