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The Boring Parts
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The Environmental Protection Agency is reinstating a regulatory provision that allows certain industrial facilities to use an affirmative defense in enforcement actions when emissions exceed permit limits due to sudden emergencies. This action effectively undoes a 2023 EPA rule that had previously removed these protections from federal operating permit programs.

Why it matters: This is primarily a legal compliance action rather than a new policy shift. The practical effect is to return regulatory language to its pre-2023 state for facilities subject to Title V operating permits under the Clean Air Act. It resolves uncertainty for states and permit holders regarding whether emergency defenses are permissible in federal enforcement contexts.

Who it affects

  • Owners and operators of industrial facilities that hold or apply for Title V operating permits

This information is based on a final rule published by the Environmental Protection Agency in the Federal Register; readers should consult the original document at Docket ID No. EPA-HQ-OAR-2016-0186 for full legal details.

Agency: Environmental Protection Agency
Source: Federal Register — read the official document

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