EPA designated two per- and polyfluoroalkyl substances (PFAS)—perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), including their salts and structural isomers—as hazardous substances under CERCLA. 

EPA established requirements for legacy coal combustion residuals (CCR) surface impoundments, as well as CCR management units at active CCR facilities and at inactive CCR facilities with a legacy CCR surface impoundment. 

NMFS announced the initiation of a five-year review for the non-U.S. distinct population segment of smalltooth sawfish under the ESA. 

The U.S. Sentencing Commission announced that it has promulgated amendments to the sentencing guidelines, policy statements, commentary, and statutory index.

The Internal Revenue Service finalized regulations regarding federal income tax credits under the Inflation Reduction Act for the purchase of qualifying new and previously-owned clean vehicles. 

FWS established a nonessential experimental population of the grizzly bear within the U.S. portion of the North Cascades Ecosystem (NCE) in the state of Washington under §10(j) of the ESA in order to support the reintroduction, recovery, and conservation of the species within the NCE. 

United States v. French Limited, Inc., No. 4:89-cv-2544 (S.D. Tex. Apr. 26, 2024). A fourth modification to a 1990 consent decree under CERCLA concerning contamination at the French Limited Superfund Site near Crosby, Texas, revises work requirements, provides for the reimbursement to EPA of certain response costs, and provides for the disbursement to members of the working group of funds received by EPA in a bankruptcy settlement payment for the site.

EPA granted a treatment variance, requested by DOE, from the Land Disposal Restrictions treatment standards for approximately 2,000 gallons of mixed hazardous low-activity radioactive waste from DOE’s Test Bed Initiative for the Hanford Site in Washington State. 

United States v. San Diego, City of, No. 3:23-cv-00541-LL-BGS (S.D. Cal. Apr. 22, 2024). Under a proposed consent decree, settling CERCLA defendants must collectively pay $2,412,029.89 for reimbursement of response costs incurred in connection with the release of hazardous substances at the former Naval Training Center in San Diego, California. 

EPA denied a petition from the Center for Biological Diversity requesting that discarded polyvinyl chloride be listed as a hazardous waste under RCRA.