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Final ruleTakes effect Dec. 2, 2026

Hazardous Materials: Remove Redundant List of U.S. EPA CERCLA Hazardous Substances

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Aug. 4, 2026. Document 2026-15809. Updated Nov. 7, 2026.

What it does

To improve efficiency and eliminate redundancy, this final rule streamlines the Hazardous Materials Regulations by modifying how hazardous substances are listed. Instead of maintaining a duplicative list, the regulations will now rely on the authoritative, comprehensive list already maintained by the U.S. Environmental Protection Agency.

The Pipeline and Hazardous Materials Safety Administration's summary, as published in the Federal Register.

What changed in the regulation

3 parts of Title 49 of the Code of Federal Regulations:

49 CFR 171, 49 CFR 172, 49 CFR 173

Compared with

The Pipeline and Hazardous Materials Safety Administration has published 67 final rules in 2026 so far, compared with 42 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

Before this

1 earlier Federal Register document under regulation identifier 2137-AG07 since Jan. 1, 2025.

What happens next and when

This final rule is effective December 2, 2026.

The agency's dates, word for word.

Document number2026-15809
ActionFinal rule.
AgenciesTransportation Department; Pipeline and Hazardous Materials Safety Administration
PublishedAug. 4, 2026
Effective dateDec. 2, 2026
Regulation identifier (RIN)2137-AG07
DocketPHMSA-2025-0093

Source: the Federal Register (public domain). The document in the Federal Register