EPA proposed to grant a second one-year extension of the attainment date for the Uinta Basin, Utah marginal nonattainment area under the 2015 ozone NAAQS, and to determine that the area attained the standard by the extended attainment date of August 3, 2023. 

SIP Proposal: Wyoming (regional haze). 

BLM finalized a rule to reduce the waste of natural gas from venting, flaring, and leaks during oil and gas production activities on federal and Indian leases and to ensure that, when federal or Indian gas is wasted, the public and Indian mineral owners are compensated for the wasted gas through royalty payments. 

EPA proposed to promulgate a CWA chronic aquatic life ambient water quality criterion for waters under the state of Idaho’s jurisdiction to protect aquatic life from exposure to harmful concentrations or levels of total mercury.

United States v. Abex Aerospace, No. 2:16-cv-02696 (C.D. Cal. Mar. 29, 2024). Under a third amendment to a proposed consent decree, additional settling CERCLA defendants must pay $20,500,000 toward cleanup of environmental contamination at the Omega Chemical Corporation Superfund Site in Los Angeles County, California. 

United States v. Intercontinental Terminals Co., LLC., No. 4:24-cv-01207 (S.D. Tex. Apr. 2, 2024). Under a proposed consent decree, a settling CERCLA defendant must pay $6,645,000 to restore, replace, rehabilitate, or acquire the equivalent of those resources injured by the releases of hundreds of thousands of barrels of a mixture of petrochemical products and firefighting foam and water into the environment as a result of a fire that ignited at a terminal facility in Deer Park, Harris County, Texas. 

SIP Approval: District of Columbia (removal of requirements for gasoline vapor recovery systems installed on gasoline dispensers). 

FWS revised its regulations concerning protections of endangered and threatened species under the ESA by reinstating the general application of the "blanket rule'' option for protecting newly listed threatened species pursuant to §4(d) of the Act, with the continued option to promulgate species-specific §4(d) rules, and extending to federally recognized tribes the exceptions to prohibitions for threatened species that the regulations currently provide to the employees or agents of FWS and other federal and state agencies to aid, salvage, or dispose of threatened species.

FWS and NMFS finalized revisions to portions of their regulations that implement §4 of the ESA, concerning procedures and criteria used for listing, reclassifying, and delisting species on the lists of endangered and threatened wildlife and plants and designating critical habitat.

FWS and NMFS finalized revisions to portions of their regulations that implement §7 of the ESA concerning interagency cooperation procedures.