The Sixth Circuit vacated EPA's 2023 disapproval of a SIP proposed by Kentucky to comply with Agency changes to ozone NAAQS. Kentucky challenged the disapproval, which rested on different modeling that came out after the Agency's deadline for submitting the plan and on a lower threshold than the one...

In a per curiam opinion, a divided en banc Fifth Circuit affirmed a district court's civil penalty award of $14.25 million against an oil company in a long-running dispute concerning alleged CAA permit violations at an industrial complex in Baytown, Texas. Environmental groups had filed a CAA citize...