NOAA approved a boundary expansion for the South Slough National Estuarine Research Reserve in Charleston, Oregon. 

The president issued Proclamation No. 10746 of May 2, 2024, expanding the boundaries of the San Gabriel Mountains National Monument.

The president issued Proclamation No. 10745 of May 2, 2024, expanding the boundaries of the Berryessa Snow Mountain National Monument.

BLM finalized a rule that applies land health standards to all Bureau-managed public lands and uses, codifies conservation tools to be used within FLPMA's multiple-use framework, revises existing regulations concerning designation and protection of areas of critical environmental concern, and provides an overarching framework to facilitate ecosystem resilience on public lands. 

EPA finalized a CWA regulation to revise the technology-based effluent limitations guidelines and standards for the steam electric power generating point source category applicable to flue gas desulfurization wastewater, bottom ash transport water and legacy wastewater at existing sources, and combustion residual leachate at new and existing sources. 

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. 

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. 

EPA withdrew from Agency regulation and management two designated ocean dredged material disposal sites, the Nome East and Nome West Sites, located near Nome, Alaska, pursuant to the Marine Protection, Research, and Sanctuaries Act.