A state high court affirmed a lower court denial of landowners' and an environmental group's petition to review a decision by the Iowa Utilities Board authorizing a company to use eminent domain to build a crude oil pipeline.

A district court denied the Pipeline and Hazardous Materials Safety Administration's (PHMSA's) motion to dismiss a challenge to the agency's pipeline inspection regulations.

The Ninth Circuit reversed a district court's dismissal of a challenge to the use of lead ammunition in Kaibab National Forest. Environmental groups sought to require the U.S.

A district court granted states' and industry groups' motion for summary judgment in a challenge to EPA's and the U.S. Army Corps of Engineers' 2015 Clean Water Rule.

A district court denied Oklahoma's motion to preliminarily enjoin EPA and the U.S. Army Corps of Engineers from enforcing their 2015 Clean Water Rule. The state sought to enjoin the 2015 Rule from being enforced until a final judgment was entered in the case.

In an unpublished opinion, a state appellate court upheld the Minnesota Department of Natural Resources' decision denying a request for the preparation of a supplemental EIS for a proposed copper-nickel-platinum group elements mine.