Here are the materials in El Paso Natural Gas Co. LLC v. United States (D. Ariz.):
Plaintiff El Paso Natural Gas Company brought suit under the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) against Defendants United States of America, United States Department of the Interior, United States Bureau of Indian Affairs, United States Geological Survey, United States Department of Energy, and United States Nuclear Regulatory Commission (collectively, “United States”). Doc. 55. Plaintiff has filed a motion for partial summary judgment. Doc. 114. The motion is fully briefed (Docs. 114, 119, 123), and the Court heard oral argument on June 1, 2017. For reasons that follow, the Court rejects the United States’ sovereign immunity defense and will require additional briefing on the question of its CERCLA owner liability.