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Montana Trout Unlimited v. Montana Department of Environmental Quality

The Montana Supreme Court, 5-2, reversed a lower court order that revoked the Montana Department of Environmental Quality's (MDEQ's) approval of a permit for construction and operation of a proposed copper mine. Conservation groups argued MDEQ's issuance of the permit violated the state's Metal Mine...

Powder River Basin Resource Council v. U.S. Dept of Interior

A district court denied environmental groups' motion to preliminarily enjoin an oil drilling project in Wyoming's Powder River Basin. The groups argued DOI's initial approval of the project violated NEPA by failing to take a "hard look" at relevant environmental issues, violated FLPMA by failing to ...

Twin Metals Minnesota LLC v. United States

A district court dismissed a mining company's challenge to DOI's cancellation of two leases for a proposed copper and nickel mine in Superior National Forest. The company argued the cancellation violated the company's right to successive lease renewals and to be free from government action that is a...

Chevron U.S.A. Inc. v. Monterey, County of

The California Supreme Court affirmed an appellate court ruling in favor of oil producers and mineral rights holders in a challenge to a county ordinance banning oil and gas wastewater injection and impoundment and drilling of new oil and gas wells. The plaintiffs argued the ordinance was preempted ...

WildEarth Guardians v. United States Forest Service

The Ninth Circuit dismissed for lack of standing a challenge to the Forest Service's livestock grazing decisions in Colville National Forest. Environmental groups argued the decisions would lead to an increase in wolf attacks on livestock, which in turn would cause the Washington Department of Fish ...

North Dakota v. United States Department of Interior

A district court granted in part and denied in part North Dakota's motion for preliminary injunction in a lawsuit concerning BLM's "pause" on nearly all quarterly lease sales of federal land in the state for oil and gas exploration in 2021 and 2022. North Dakota argued the "pause" or "cancellation" ...

Louisiana v. Biden

The Fifth Circuit dismissed Louisiana's challenge to the Biden Administration's interim estimates on the social cost of greenhouse gas emissions. Louisiana initially sought to preliminarily enjoin the interim estimates from being used, arguing they were procedurally invalid, arbitrary and capricious...

Commonwealth of Kentucky v. United States Environmental Protection Agency

A district court denied conservation groups' motion to intervene in a lawsuit concerning EPA's and the Army Corps of Engineers' rule defining the scope of the CWA. The groups sought intervention as of right, arguing they had "a significant, protectable interest" because they represent those who use ...

Bartell Ranch v. McCullough

A district court denied emergency motions brought by environmental groups, ranchers, and tribes to halt construction of a lithium mine near Thacker Pass, Nevada, pending appeal. The plaintiffs initially argued BLM's approval of the mine violated FLPMA, NEPA, and the National Historic Preservation Ac...

Fond Du Lac Band of Lake Superior Chippewa v. Cummins

A district court denied a mining company's motion to dismiss an Indian tribe's challenge to a land exchange between the company and the Forest Service. The tribe argued that the land exchange implicated its sovereign interests, including a right under an 1854 treaty to use the land for hunting, fish...