The Environmental Protection Agency (EPA) is taking final action on a permitting rule submitted as a revision to the San Joaquin Valley Air Pollution Control District (SJVAPCD or ``District'') portion of the California state implementation plan (SIP). We are finalizing a limited approval and limited disapproval of the rule. This revision concerns the District's new source review (NSR) permitting program for new and modified sources of air pollution under section 110(a)(2)(C) and part D of title I of the Clean Air Act (CAA or ``Act'').

The Environmental Protection Agency (EPA) is finalizing an approval and a limited approval and limited disapproval of revisions to the Antelope Valley Air Quality Management District (AVAQMD or ``District'') portion of the California State Implementation Plan (SIP). These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under part D of title I of the Clean Air Act (CAA or ``Act''). This action updates the District's portion of the California SIP with nine revised rules.

The Environmental Protection Agency (EPA) is approving portions of a State Implementation Plan (SIP) revision submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), on November 19, 2016, as supplemented on January 20, 2023, in response to a finding of substantial inadequacy and SIP call published on June 12, 2015, regarding provisions in the Tennessee SIP related to excess emissions during startup, shutdown, and malfunction (SSM) events.

The Environmental Protection Agency (EPA) is taking final action to disapprove under the Clean Air Act (CAA or ``Act''), state implementation plan (SIP) submissions from the State of California that address contingency measures requirements for the 2008 ozone national ambient air quality standards (NAAQS) in the Sacramento Metro, California ozone nonattainment area. The EPA is finalizing this disapproval because the SIP submissions do not provide for contingency measures that would be triggered if the area fails to attain the NAAQS or make reasonable further progress (RFP).