Last week, the State of Wyoming filed a Petition for Review of Final Agency Action in the Wyoming Federal District Court challenging the new federal hydraulic fracturing rules, 43 C.F.R. Part 3160. The case is State of Wyoming v. United States Department of the Interior, et al., No. 15cv43-S. Wyoming essentially argues that the Department of Interior's new rules exceed the Department of Interior's authority under the Federal Land Policy and Management Act, 43 U.S.C. §§ 1701-84 and the Mineral Leasing Act, 30 U.S.C. §§ 181-287; that exclusive federal authority is vested in the Environmental Protection Agency's Underground Injection Control program established under the Safe Drinking Water Act, 42 U.S.C. § 300h-1; and that the rules unlawfully interfere with the State of Wyoming's hydraulic fracturing regulations.