The Ninth Circuit granted environmental groups' petition to review EPA's 2017 order maintaining a tolerance for the pesticide chlorpyrifos, and vacated the Agency's order.

The Fourth Circuit denied environmental groups' petition to review Virginia's issuance of §401 certification under the CWA for construction of a natural gas pipeline.

The Ninth Circuit reversed in part and vacated in part a lower court decision granting summary judgment for a proposed logging project in areas of the Kootenai National Forest where two threatened species—the Canada lynx and the Cabinet-Yaak grizzly bear—are present.

A district court granted in part an environmental group's motion for summary judgment to compel EPA to act on its 2016 Plan for the 2008 eight-hour ozone NAAQS adopted by the San Joaquin Valley Air Pollution Control District and granted in part the Agency's motion requesting an extensio

The D.C. Circuit denied power companies' petitions to review FERC orders approving an exemption to the minimum offer price rule in the New England forward capacity market for a limited amount of qualifying renewable energy.

A Minnesota appellate court affirmed a lower court ruling in favor of a county's zoning ordinance that bans all industrial-mineral mining, including silica-sand mining. A silica-sand mining company argued that the ordinance discriminated against its business.

A district court denied an environmental group's motion for summary judgment challenging DOJ's withholding of legal memos concerning the president's authority to shrink national monuments under the Antiquities Act.

The Fourth Circuit vacated and remanded BLM's decision granting a right-of-way through federal land for construction of a pipeline and the U.S.