The Tenth Circuit affirmed a lower court’s denial of environmental groups’ motion to intervene in a county action against the United States to quiet title to several purported…

The Tenth Circuit held that the owner of an underground coal mine may intervene in an environmental group's NEPA action concerning the U.S. Forest Service's approval of venting of…

The court grants a local water authority's motion to intervene in a case brought by environmental groups challenging the validity of the U.S. Fish and Wildlife Service's biological…

The court reverses a district court judgment denying Florida's and a hydropower company's motions to intervene as defendants in Georgia's lawsuit against the U.S. Army Corps of…

The court upholds a district court decision denying environmental groups the right to intervene in a suit concerning the listing of the Atlantic salmon as an endangered species. In 1999, the…

The court holds that the state of Texas met the requirements for intervention as of right in various capacities in an action where an environmental group brought suit under the Endangered Species…

The court affirms a district court order directing the U.S. government to release, under §2001(k)(1) of the Fiscal Year 1995 Emergency Supplemental Appropriations for Disaster Relief and…

The court holds that Arizona and an Arizona county may intervene as of right in the injunctive relief portion of an action alleging that the U.S. Forest Service (Forest Service) violated the…

The court holds, without opinion, that members of a utility industry group may intervene as of right under Federal Rule of Civil Procedure 24(a) in a suit to compel the U.S. Environmental…