EPA amended specific provisions in the Greenhouse Gas Reporting Rule to improve data quality and consistency. 

EPA approved a request from the New Jersey Department of Environmental Protection for delegation of authority to implement and enforce the federal plan requirements for municipal solid waste landfills that commenced construction on or before July 17, 2014, and have not been modified or reconstructed since July 17, 2014. 

SIP Approval: Indiana (temporary alternative opacity limitations at the BP Products North America, Inc. facility in Whiting, Indiana, during startup and shutdown). 

SIP Proposal: Michigan (revisions to state air pollution control rules concerning air use approval). 

The Federal Aviation Administration adopted standards for measuring non-volatile particulate matter exhaust emissions from aircraft engines.

EPA entered into a proposed consent decree in Our Children’s Earth Foundation v. Regan, No. 1:23-cv-2848 (D.D.C.), that would establish deadlines for EPA to act on certain SIP submissions by Louisiana, South Carolina, and Texas. 

EPA entered into a proposed settlement agreement in United States Steel Corp. v. EPA, Nos. 13-3595, 16-2668, and 18-1249 (8th Cir.), that would establish deadlines for EPA to take certain, specified actions regarding final rules promulgated by the Agency under the CAA related to regional haze best available retrofit technology determinations for taconite facilities owned and operated by U. S. Steel in Minnesota. 

EPA entered into a proposed settlement agreement in Cleveland-Cliffs, Inc. v. Environmental Protection Agency, No. 16-2643 (8th Cir.), that would establish deadlines for EPA to take certain, specified actions regarding final rules promulgated by the Agency under the CAA related to regional haze best available retrofit technology determinations for taconite facilities in Michigan and Minnesota. 

SIP Proposal: California (revisions concerning nonattainment fees for the 1979 one-hour ozone NAAQS in the Antelope Valley Air Quality Management District and Mojave Desert Air Quality Management District). 

EPA promulgated new greenhouse gas emissions standards for model year (MY) 2032 and later heavy-duty highway vehicles that phase in starting as early MY 2027 for certain vehicle categories, updated discrete elements of the Averaging Banking and Trading program, and added warranty requirements for batteries and other components of zero emission vehicles.