Data / Federal rules / 2026-06304

National Emission Standards for Hazardous Air Pollutants: Chemical Manufacturing Area Sources Technology Review

The Environmental Protection Agency published this final rule in the Federal Register on April 1, 2026. It took effect on April 1, 2026.

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What the agency says

The Environmental Protection Agency (EPA) is finalizing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Chemical Manufacturing Area Source (CMAS) categories pursuant to a technology review under Clean Air Act (CAA) section 112(d)(6). Specifically, the EPA is finalizing new leak detection and repair (LDAR) requirements for equipment leaks and heat exchange systems in organic hazardous air pollutant (HAP) service. In addition, the EPA is taking final action to add standards for pressure relief devices (PRDs) and pressure vessels; require electronic reporting for notification of compliance status (NOCS), performance test reports, and periodic reports; and require continuous performance testing of non-flare air pollution control devices (APCD). The EPA is not finalizing the proposed area source category for chemical manufacturing with ethylene oxide (EtO) or related standards at this time.

Key facts

Document number: 2026-06304
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: April 1, 2026
Takes effect: April 1, 2026
Dates: This final rule is effective on April 1, 2026. The Director of the Federal Register (FR) has approved incorporation by reference of certain publications listed in the rule as of April 1, 2026.
Docket: EPA-HQ-OAR-2024-0303; FRL-7623-02-OAR
Regulation ID (RIN): 2060-AU73
Code of Federal Regulations: 40 CFR 63
Topics: Administrative practice and procedure; Air pollution control; Environmental protection; Hazardous substances; Incorporation by reference; Intergovernmental relations; Reporting and recordkeeping requirements
Pages: 37

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on administrative practice and procedure · Rules on air pollution control · Rules on environmental protection · Published in April 2026

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.