The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), revisions to the sulfur dioxide (SO<INF>2</INF>) portion of the Indiana State Implementation Plan (SIP). The state of Indiana is requesting revisions to emission limits at the Northern Indiana Public Service Company Bailly Station (NIPSCO) facility reflecting permanently shut down units. Indiana is also requesting SIP revisions for two facilities formerly owned by ArcelorMittal USA LLC and currently owned by Cleveland-Cliffs LLC (the Indiana Harbor East and Indiana Harbor West facilities).

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the State Implementation Plan (SIP) submitted on November 29, 2021, by the State of Missouri. This final action approves revisions to a state regulation related to the Cross- State Air Pollution Rule SO<INF>2</INF> Group 1 Trading Program. The revisions alter the amounts of CSAPR SO<INF>2</INF> Group 1 emission allowances that are allocated to two of the state's units from the state's annual emissions budgets.

The Environmental Protection Agency (EPA) is proposing to approve a Florida State Implementation Plan (SIP) revision, submitted by the State of Florida through the Florida Department of Environmental Protection (FDEP) on April 1, 2022. The SIP revision revises multiple stationary source rules in Florida's SIP with substantive and minor changes throughout. EPA is proposing to approve these changes pursuant to the Clean Air Act (CAA or Act).

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), a revision to the Ohio State Implementation Plan (SIP) intended to provide for attainment of the 2010 primary, health-based 1-hour sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS or standard) for the Muskingum River SO<INF>2</INF> nonattainment area.