Diné Citizens Against Ruining Our Environment v. Bureau of Indian Affairs

The federal district court for the District of Arizona dismissed an action challenging federal authorizations for extending operations of the Four Corners Power Plant, renewing rights-of-way for transmission lines, and expanding strip mining in the Navajo Mine. The court agreed with Navajo Transitional Energy Company (NTEC)—a company formed by the Navajo Nation in 2013 to purchase the Navajo Mine—that NTEC was a necessary party that could not be joined by virtue of its sovereign immunity. The court held that “[i]n equity and good conscience” the case could not continue. The groups challenging the approvals had alleged violations of the Endangered Species Act and the National Environmental Policy Act, including allegations that environmental review failed to consider alternatives that would have significantly reduced greenhouse gas emissions.

Environmental groups filed a lawsuit against federal defendants in the federal district court for the District of Arizona challenging expanded coal strip-mining operations at the Navajo Mine and extended coal combustion at the Four Corners Power Plant. The facilities are located in New Mexico and Arizona, including on tribal lands. The groups challenged a Biological Opinion (BiOp) prepared pursuant to the Endangered Species Act that concluded that operations at the mine and power plant would neither jeopardize the survival and recovery of, nor adversely modify designated critical habitat of, two endangered species of fish. The groups’ allegations included that the BiOp’s analysis of cumulative effects failed entirely to address evidence of significant impacts to the fishes’ habitat from climate change. The groups also challenged compliance with the National Environmental Policy Act. They alleged that the final environmental impact statement rejected alternatives such as conversion to natural gas that were technically and economically feasible and that would have greatly reduced greenhouse gas emissions at the power plant, which the complaint said was one of the largest domestic sources of greenhouse gas emissions.