A district court stayed the Navigable Waters Protection Rule, which substantially narrows the definition of "waters of the United States" that are subject to federal regulation under the CWA, in Colorado. Colorado argued that the Supreme Court's ruling in Rapanos v. United States foreclosed the appr...

A district court denied a motion for preliminary relief in a challenge to the Navigable Waters Protection Rule, which substantially narrows the definition of "waters of the United States" that are subject to federal regulation under the CWA. California argued that EPA and the Army Corps of Engineers...

The Sixth Circuit reversed, 2-1, a district court ruling that required the Pipeline and Hazardous Materials Safety Administration (PHMSA) to comply with the ESA and NEPA before approving an oil pipeline operator's response plans for addressing the risk of a potential oil spill. A conservation group ...

A district court denied EPA's motion to dismiss a lawsuit concerning its duty to update its National Contingency Plan (NCP) for addressing oil and hazardous substance contamination. Environmental groups argued that the current NCP is dangerous because it continues to permit the use of chemical dispe...

A district court vacated DOI's decision to enter into a land exchange agreement to facilitate construction of a road through Izembek National Wildlife Refuge in Alaska. Environmental groups argued that the agreement, which DOI acknowledged represented a change in the agency's policy, failed to provi...