A district court vacated its preliminary injunction in an environmental groups' challenge to the Army Corps of Engineers' issuance of a dredge-and-fill permit for a dam expansion project in Colorado. It previously remanded with vacatur the Corps' record of decision, final EIS, and permit, enjoined f...

The Fifth Circuit dismissed environmental groups' petition to review an EPA rule granting Louisiana primary enforcement authority over Class VI underground carbon sequestration wells. The groups petitioned under the SDWA's review provision, and the state and its Department of Energy and Natural Reso...

The Fifth Circuit agreed to rehear a petition for review that it previously denied concerning EPA's designation of two counties in Texas as nonattainment for the 2010 sulfur dioxide NAAQS. The state of Texas and a power plant operator argued EPA violated the CAA by ignoring monitoring data that purp...