by Caltha, LLP | Aug 21, 2026 | Hazardous Materials
DOT’s Pipeline and Hazardous Materials Safety Administration (PHMSA) issued a final rule on August 4, 2026 that significantly revises how aerosols are defined under the Hazardous Materials Regulations (HMR). The change—effective September 3, 2026—aligns U.S. rules...
