Pipeline and Hazardous Materials Safety Administration
49 CFR Parts 171, 172, and 173
[Docket No. PHMSA–2025–0093 (HM–268E)]
RIN 2137–AG07 Hazardous Materials: Remove Redundant List of U.S. EPA CERCLA Hazardous Substances
ACTION: Final rule.
SUMMARY: 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.
DATES: This final rule is effective December 2, 2026.
READ MORE: https://www.govinfo.gov/content/pkg/FR-2026-08-04/pdf/2026-15809.pdf