Sulfur oxides

Air Plan Approval; Washington; Southwest Clean Air Agency, General Air Quality Regulations

The Environmental Protection Agency (EPA) is approving revisions to the Washington State Implementation Plan (SIP) that were submitted on June 22, 2023, by the Department of Ecology in coordination with the Southwest Clean Air Agency (SWCAA). In 2017, the EPA approved a comprehensive update to SWCAA 400 General Regulations for Air Pollution Sources in the SIP, which includes new source review permitting requirements as well as other general requirements for sources regulated under SWCAA's jurisdiction.

Publication Date: 
Friday, September 29, 2023 - 4:00am

Air Plan Approval; Indiana; ArcelorMittal and NIPSCO Sulfur Dioxide Revisions

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).

Publication Date: 
Thursday, September 28, 2023 - 4:00am

Air Plan Approval; Missouri; Revisions to the Cross-State Air Pollution Rule SO2 Group 1 Trading Program

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.

Publication Date: 
Friday, September 15, 2023 - 4:00am

Air Plan Approval; FL; Miscellaneous SIP Revision

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).

Publication Date: 
Monday, September 11, 2023 - 4:00am

Air Plan Approval; Ohio; Approval of the Muskingum River SO2 Attainment Plan

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.

Publication Date: 
Friday, September 8, 2023 - 4:00am

Approval and Promulgation of Air Quality Implementation Plans; Maryland; Regional Haze State Implementation Plan for the Second Implementation Period

The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) revision submitted by the State of Maryland on February 8, 2022, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule for the program's second implementation period.

Publication Date: 
Friday, August 25, 2023 - 4:00am

Air Plan Approval; Texas; Updates to Public Notice and Procedural Rules and Removal of Obsolete Provisions

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving portions of three revisions to the Texas State Implementation Plan (SIP) submitted by the Texas Commission on Environmental Quality (TCEQ) on July 9, 2021, and January 21, 2022, that update the air permitting program by removing obsolete provisions and enhancing public notice requirements of the air permitting program. We are also making ministerial edits to correct several errors identified in the amendatory language for the Texas SIP.

Publication Date: 
Thursday, August 24, 2023 - 4:00am

Air Plan Approval; South Carolina: New Source Review Updates

The Environmental Protection Agency (EPA) is finalizing approval of a State Implementation Plan (SIP) revision submitted by the State of South Carolina, through the South Carolina Department of Health and Environmental Control (hereinafter referred to as SC DHEC or South Carolina) via a letter dated February 3, 2022.

Publication Date: 
Wednesday, August 23, 2023 - 4:00am

Air Plan Approval; Arkansas; Revisions to Rule 19 of the Arkansas Plan

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve portions of the revisions to the Arkansas State Implementation Plan (SIP) including revisions to the Arkansas Pollution Control and Ecology Commission's (``Commission'' or APC&EC) Rule No. 19, Rules of the Arkansas Plan of Implementation for Air Pollution Control submitted by the Arkansas Department of Energy and Environment, Division of Environmental Quality (DEQ) via the Arkansas Governor's Office on June 22, 2022.

Publication Date: 
Tuesday, August 22, 2023 - 4:00am

Air Plan Approval; MO; Control of Emissions From Volatile Organic Liquid Storage

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Missouri State Implementation Plan (SIP) related to the control of emissions from volatile organic liquid storage. The revisions to this rule include adding incorporations by reference to other state rules, adding definitions specific to the rule, revising unnecessarily restrictive or duplicative language, and making administrative wording changes. These revisions do not impact the stringency of the SIP or have an adverse effect on air quality.

Publication Date: 
Tuesday, August 22, 2023 - 4:00am

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