The Environmental Protection Agency (EPA) is supplementing a proposed approval published on October 9, 2020 (``October 2020 proposal''), for revisions to the Texas State Implementation Plan (SIP) to meet the Reasonable Further Progress (RFP) requirements for the Dallas-Fort Worth (DFW) serious nonattainment area for the 2008 ozone National Ambient Air Quality Standard (NAAQS).

The Environmental Protection Agency (EPA) is proposing an approval and a limited approval and limited disapproval of a revision to the Mojave Desert Air Quality Management District (MDAQMD or ``District'') portion of the California State Implementation Plan (SIP). We are proposing approval of five rules and a limited approval and limited disapproval of five rules. 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'').

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the Mississippi Department of Environmental Quality (MDEQ) on November 17, 2016, on behalf of the State of Mississippi. The revision was submitted in response to EPA's SIP Call published on June 12, 2015, concerning excess emissions during startup, shutdown, and malfunction (SSM) events. EPA is approving the SIP revision and finds that such SIP revision corrects the deficiencies identified in the June 12, 2015, SIP Call.

Due to the receipt of an adverse comment, the Environmental Protection Agency (EPA) is withdrawing the September 27, 2022, direct final rule approving revisions to Michigan Air Pollution Control Rules Part 1 Definitions, and Part 2 Air Use Approval for inclusion in the Michigan State Implementation Plan (SIP) and the removal of rules from the SIP that are part of Michigan's title V Renewable Operating Permit program, and rules that have been moved to other sections of the Michigan Administrative Code and approved into the Michigan SIP.