Rescission of Title V Emergency Affirmative Defense Rule
Primary source
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Issuing agencies
Abstract
The U.S. Environmental Protection Agency (EPA) is rescinding a 2023 final rule titled "Removal of Title V Emergency Affirmative Defense Provisions From State Operating Permit Programs and Federal Operating Permit Program" ("2023 Affirmative Defense Rule"). The 2023 Affirmative Defense Rule removed emergency-related affirmative defense provisions from Federal regulations governing title V operating permit programs. The EPA is taking this final action in response to a September 5, 2025, decision of the U.S. Court of Appeals for the District of Columbia (DC) Circuit which reversed the EPA's 2023 Affirmative Defense Rule. This rescission is necessary to carry out the court's mandate and reinstates the emergency-related affirmative defense provisions as they existed in the Code of Federal Regulations (CFR) before promulgation of the 2023 Affirmative Defense Rule.
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