Data / Federal rules / 2024-29956

Air Plan Disapproval; Texas; Control of Air Pollution From Visible Emissions and Particulate Matter

The Environmental Protection Agency published this final rule in the Federal Register on December 20, 2024. It took effect on January 21, 2025.

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What the agency says

Pursuant to the Federal Clean Air Act (CAA, the Act), the Environmental Protection Agency (EPA) is disapproving a revision to the Texas State Implementation Plan (SIP) submitted by the State of Texas through the Texas Commission on Environmental Quality (TCEQ) on August 20, 2020 (2020 SIP revision). The 2020 SIP revision addresses emissions during planned Maintenance, Startup and Shutdown (MSS) activities for certain Electric Generating Units (EGUs) and includes requirements intended to address visible emissions (opacity) and Particulate Matter (PM) emissions during planned MSS activities. The requirements are included in eight Agreed Orders (AOs) issued by TCEQ to the affected EGUs and provided in the 2020 SIP revision. EPA determined that the requirements contained in these AOs do not meet the CAA enforceability requirements or the CAA requirement that emission limitations must apply on a continuous basis. We are taking this action in accordance with section 110 of the Act.

Key facts

Document number: 2024-29956
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: December 20, 2024
Takes effect: January 21, 2025
Dates: This rule is effective on January 21, 2025.
Docket: EPA-R06-OAR-2021-0029; FRL-12218-02-R6
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Carbon monoxide; Environmental protection; Hydrocarbons; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Particulate matter; Reporting and recordkeeping requirements; Volatile organic compounds
Pages: 17

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in December 2024

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.