News & Analysis as of

Comment Period National Emissions Standards Proposed Rules

Jones Day

EPA Proposes Repeal of 2024 Mercury and Air Toxics Standards Amendments

Jones Day on

On June 11, 2025, the U.S. Environmental Protection Agency ("EPA") announced a proposed rule to repeal key amendments to the 2024 Mercury and Air Toxics Standards ("MATS") for coal- and oil-fired electric utility steam...more

Jenner & Block

New EPA Rule Removes Emergency Defense Waiver in Title V Air Permits

Jenner & Block on

On July 21, 2023, the Environmental Protection Agency published a final rule eliminating an affirmative defense for Clean Air Act permit emissions violations caused by “emergency” circumstances. “Major sources” (i.e....more

Hogan Lovells

EPA’s proposes most stringent vehicle emission standards ever for model years 2027-2032

Hogan Lovells on

On April 12, 2023, the Environmental Protection Agency (EPA) issued the notice of proposed rulemaking for “Multi-Pollutant Emission Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles” (the “proposed...more

Downey Brand LLP

California Air and Climate, Vol. 4: CARB Cap-and-Trade Amendments and Methods to Reduce Transportation GHG; BAAQMD Seeking...

Downey Brand LLP on

California Air Resources Board (CARB) Proposes Amendments to its Cap-and-Trade Program - On September 4, 2018, CARB proposed amendments to its greenhouse gas (“GHG”) cap-and-trade program to implement the changes required...more

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