SIP Proposal: Missouri (administrative revisions to the Confidential Information Rule).

EPA proposed to establish federal water quality standards (WQS) for Indian reservation waters that currently do not have WQS in effect under the CWA, with limited exceptions.

EPA proposed new, more stringent emissions standards for criteria pollutants and greenhouse gases (GHGs) for light-duty and medium-duty vehicles that would phase-in over model years 2027 through 2032; GHG program revisions; and new standards to control refueling emissions from incomplete medium-duty vehicles, and battery durability and warranty requirements for light-duty and medium-duty plug-in vehicles.

The U.S. Sentencing Commission promulgated amendments to the sentencing guidelines, policy statements, commentary, and statutory index for federal courts.

CEQ requested information on Columbia River salmon and other native fish restoration, as well as other relevant information to an ongoing mediation.

EPA proposed to approve revisions to Louisiana's Underground Injection Control Program that would allow permits for and ensure compliance of geologic carbon sequestration facilities as Class VI wells for primacy under the SDWA.

FWS designated approximately 78,009 acres in Idaho as critical habitat for slickspot peppergrass under the ESA.

EPA proposed to withdraw the existing Texas Sulfur Dioxide (SO2) Trading Program provisions and in its place proposed a federal implementation plan that establishes SO2 limits on 12 electric generating units located at six Texas facilities to fulfill requirements of the Regional Haze Rule for the installation and operation of best available retrofit technology requirements for SO2.

NRC issued Revision 2 to Regulatory Guide 1.89, “Environmental Qualification of Certain Electric Equipment Important to Safety for Nuclear Power Plants,” which provides guidance that the staff of NRC considers acceptable to meet regulatory requirements for environmental qualification of certain electric equipment important to safety.

United States v. Tesoro Refining & Marketing Co., LLC, No. SA-16-cv-00722 (W.D. Tex. Apr. 27, 2023). Under a proposed first material modification to a 2016 consent decree concerning a petroleum refinery in Martinez, California, a settling CAA defendant must pay a penalty of $27.5 million dollars, implement various injunctive relief to assure compliance with specified emissions standards whether it engages in petroleum refining or renewable fuel production at the facility, and retire emissions credits to mitigate the harm from its violations.