The D.C. Circuit granted in part and denied in part petitions to review EPA's attainment designations for its 2015 ozone NAAQS. Environmental groups, municipal governments, and the state of Illinois argued that the Agency failed to follow its own scientific and technical record when it decided that ...

The North Dakota Supreme Court affirmed a lower court ruling upholding the North Dakota Department of Environmental Quality's issuance of an air quality permit to construct a refinery. A conservation group argued the Department's omission of an enforceable permit limit for hazardous air pollutants (...

A district court granted in part summary judgment for nonprofit groups in a suit concerning a logging project in the Helena-Lewis and Clark National Forest. One group argued the project violated the Roadless Rule because the Forest Service was surreptitiously planning to construct new roads in an in...

A district court vacated the Army Corps of Engineers' decision to grant an easement under the Mineral Leasing Act for the Dakota Access Pipeline, which runs from North Dakota to Illinois, after previously ruling that the Corps must prepare an EIS for the pipeline to comply with NEPA. The court found...

A district court dismissed for lack of subject matter jurisdiction a suit concerning EPA's CAA obligations to regulate pollution from coke ovens. Environmental groups argued the CAA required EPA to perform a risk assessment every time it revised its technology-based standards for a hazardous polluti...

The Tenth Circuit held that EPA erred in denying an environmental group's petition to review the renewal of a state-issued Title V operating permit for a coal-fired power plant in Utah. The group's petition argued that EPA should object to the renewal because it failed to "assure compliance" with al...

The Ninth Circuit affirmed summary judgment for BLM in a challenge to its 2017 offer and sale of oil and gas leases in the National Petroleum Reserve-Alaska. Environmental groups argued that BLM violated NEPA by failing to prepare an EA or EIS for the lease sale and failing to take a hard look at it...

The Ninth Circuit affirmed summary judgment for BLM in a challenge to the agency's "geld and release" plan for wild horses in northeastern Nevada. An animal rights group argued that BLM violated NEPA by failing to prepare an EIS for the plan because five of the Act's intensity factors demonstrated t...