The Environmental Protection Agency (EPA) is taking direct final action to approve revisions to the applicable state implementation plan for the State of Nevada submitted by the Nevada Division of Environmental Protection. The revisions include amended State rules related to 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. EPA is taking action under the Clean Air Act obligation to take action on State submittals of revisions to state implementation plans. The intended effect of the approval is to fix deficiencies in the previously-approved version of the permitting rules and to ensure that new or modified stationary sources do not interfere with attainment or maintenance of the national ambient air quality standards.