SIP Approval: Indiana (revisions to 2008 ozone maintenance plan for the Indiana portion of the Chicago Naperville, IL-IN-WI area). 

SIP Proposal: Indiana (revisions to 2008 ozone maintenance plan for the Indiana portion of the Chicago Naperville, IL-IN-WI area). 

SIP Proposal: New York (source-specific revision for Finch Paper LLC to address nitrogen oxide reasonably available control technology required for implementation of 2008 and 2015 ozone NAAQS). 

EPA entered into a proposed consent decree in South Coast Air Quality Management District v. U.S. EPA, No. 2:23-cv-02646-JLS-PD (C.D. Cal.), that would establish a deadline for EPA to take final action on a SIP revision submitted by the state of California. 

United States v. Cummins Inc., No. 1:24-cv-00088 (D.D.C. Jan. 10, 2024). Under a proposed consent decree, a settling CAA defendant that allegedly violated the Act through the production and sale of diesel motor vehicle engines—along with associated engine control and emission control systems—that were installed in nearly one million pickup trucks sold in the United States must pay $1.675 billion in civil penalties, conduct vehicle recall campaigns, and fund projects that reduce nitrogen oxide emissions.

SIP Approval: Illinois (updates to list of designated reference and equivalent methods in response to EPA rulemakings and changes to NAAQS). 

EPA announced the availability of the document Policy Assessment for the Review of the Secondary National Ambient Air Quality Standards for Oxides of Nitrogen, Oxides of Sulfur and Particulate Matter. 

United States v. Dow Chemical Co., No. 2:21-cv-00114-MLCF-JVM (E.D. La. Jan. 8, 2024). A proposed stipulation and order modifying a consent decree changes the number of necessary flare gas recovery system (FGRS) compressors at the settling CAA defendants’ petrochemical manufacturing plant in Orange, Texas, from two to three and modifies the requirements for FGRS operation time to reflect the additional compressor. 

United States v. Allied Waste Niagara Falls Landfill, LLC, No. 1:24-cv-36 (W.D.N.Y. Jan. 9, 2024). Under a proposed consent decree, a settling CAA defendant that allegedly violated federal regulations concerning municipal solid waste landfills must pay a $671,000 civil penalty and comply with the regulations by installing and operating a gas collection and control system at its landfill. 

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