A district court vacated EPA's denial of an environmental group's petition to issue new and revised water quality standards for the state of Washington. The group argued that EPA acted arbitrarily and capriciously in denying its petition, and sought to have the denial vacated and the petition remand...

A district court dismissed as moot a lawsuit seeking to reinstate a permit for the Keystone XL oil pipeline to cross the U.S.-Canada border. Twenty-three states challenged the president's authority to revoke the permit, arguing the permitting decision concerned only international and interstate comm...

A district court granted environmental groups' motion to preliminarily enjoin wildfire logging projects in the Willamette National Forest. The groups argued the Forest Service violated NEPA by failing to perform supplemental analysis for the previously approved projects to account for the effects of...

A district court denied Oklahoma's motion for preliminary injunction in a lawsuit concerning OSM's decision to strip the state of its regulatory authority over surface mining on the Muscogee (Creek) Nation's reservation. Oklahoma sought to enjoin OSM from enforcing its decision, arguing that the sta...

A district court granted Delaware's motion to remand to state court its climate liability lawsuit against fossil fuel companies. Delaware argued it had suffered, and would continue to suffer, damages from climate impacts caused by the companies' denial of and disinformation about the existence, caus...

The Ninth Circuit remanded EPA's issuance of an NPDES general permit for concentrated animal feeding operations (CAFOs) in Idaho. Environmental groups challenged the permit, arguing it lacked sufficient monitoring provisions to ensure compliance with its discharge limitations. The court found that t...

The First Circuit affirmed the Massachusetts Department of Environmental Protection's (MDEP's) decision to issue an air permit for a natural gas compressor station in Weymouth, Massachusetts. Neighboring cities and individuals argued MDEP failed to follow its own established procedures by eliminatin...