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

The Mine Safety and Health Administration amended its existing standards to better protect miners against occupational exposure to respirable crystalline silica, a significant health hazard, and to improve respiratory protection for miners from exposure to airborne contaminants.

The National Highway Traffic Safety Administration proposed to establish two new federal motor vehicle safety standards specifying performance requirements for all motor vehicles that use hydrogen as a fuel source. 

EPA proposed to revise regulations that allow for the open burning and detonation (OB/OD) of waste explosives by reducing OB/OD of waste explosives and increasing control of air emissions. 

The Pipeline and Hazardous Materials Safety Administration and NRC jointly seek comments on issues concerning requirements in the International Atomic Energy Agency regulations for the safe transport of radioactive materials. 

The Pipeline and Hazardous Materials Safety Administration amended the Hazardous Materials Regulations to update, clarify, improve the safety of, or streamline various regulatory requirements.

United States v. Toa Alta, Puerto Rico, Municipality of, No. 3:21-01087 (D.P.R. Feb. 13, 2024). A proposed second stipulation and final order resolves two claims under RCRA and requires a settling defendant to remove and dispose of leachate in the Toa Alta landfill’s southeast cell and to pay a $50,000 civil penalty.