A district court denied summary judgment for environmental groups in their challenge to the Army Corps of Engineers' approval of a navigation improvement project in San Juan Harbor in Puerto Rico. The groups sued the Corps, NMFS, and FWS, arguing they violated the ESA, NEPA, and the CWA. With respec...

The Third Circuit denied an environmental group's petitions to review EPA's approval of certain air pollution control technology use at industrial facilities in Pennsylvania. The group argued EPA violated the CAA by focusing exclusively on emissions from those facilities instead of examining their i...

The Third Circuit vacated EPA's 2022 decision to reverse its prior determination and to require an oil refinery in the Virgin Islands to obtain a PSD permit before it can resume operations. The refinery owner petitioned for review, arguing EPA's application of its reactivation policy—under which a...

The D.C. Circuit denied a group of fuel refineries' petitions to review EPA's rule extending compliance reporting deadlines under the Renewable Fuel Standard program. The group argued the rule violated the CAA by providing obligated parties less than 13 months' compliance lead time—from EPA's anno...

The Eighth Circuit affirmed summary judgment for the Bureau of Reclamation in a challenge to the Bureau's decision to move forward with a water reclamation project in North Dakota. The state of Missouri argued the Bureau violated the Water Supply Act by moving forward without first getting approval ...