On April 08, 2022 (87 FR 20721), the Environmental Protection Agency (EPA) published a final rule in the federal register modifying the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) list of hazardous substances, to be consistent with the statutory provisions that currently comprise this list. These modifications include adding the Clean Air Act (CAA) Hazardous Air Pollutant (HAP) 1-Bromopropane (1–BP) (CASRN 106–94–5) and its synonym n-Propyl bromide (nPB); and is removing the Resource Conservation and Recovery Act (RCRA) vacated K-Code Wastes: K064, K065, K066, K090, and K091. The EPA is also adding clarifying language, correcting a Chemical Abstract Service Registry Number (CASRN), and modifying the formatting of hazardous substance isomers and homologs that are listed with parent substances. This final rule is effective on April 8, 2022.

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EPA 04-08-2022 final rule updates CERCLA List of Hazardous Substances