EPA is taking final action to approve certain revisions to the applicable state implementation plan for the State of Nevada and to disapprove certain other revisions. These revisions involve State rules governing applications for, and issuance of, permits for stationary sources, but not including review and permitting of major sources and major modifications under parts C and D of title I of the Clean Air Act. These revisions involve submittal of certain new or amended State rules and requests by the State for rescission of certain existing rules from the state implementation plan. EPA is taking this action under the Clean Air Act obligation to take action on State submittals of revisions to state implementation plans. The intended effect is to update the applicable state implementation plan with current State rules with respect to permitting, where consistent with the Clean Air Act.