Alaska Department of Environmental Conservation v. EPA

Alaska Department of Environmental Conservation v. EPA
Supreme Court of the United States
Argued October 8, 2003 Decided January 21, 2004
Full case name	Alaska Department of Environmental Conservation v. Environmental Protection Agency, et al.
Citations	540 U.S. 461 (more) 124 S. Ct. 983; 157 L. Ed. 2d 967
Case history
Prior	Petition denied, 298 F.3d 814 (9th Cir. 2001); case suspended, 244 F.3d 748 (9th Cir. 2001); cert. granted, 537 U.S. 1186 (2003).
Court membership
Chief Justice William Rehnquist Associate Justices John P. Stevens · Sandra Day O'Connor Antonin Scalia · Anthony Kennedy David Souter · Clarence Thomas Ruth Bader Ginsburg · Stephen Breyer
Case opinions
Majority	Ginsburg, joined by Stevens, O'Connor, Souter, Breyer
Dissent	Kennedy, joined by Rehnquist, Scalia, Thomas
Laws applied
Clean Air Act

Alaska Dept. of Environmental Conservation v. EPA, 540 U.S. 461 (2004), is a US Supreme Court case clarifying the scope of state environmental regulators and the Environmental Protection Agency (EPA). In a 5–4 decision, the Supreme Court found the EPA has authority to overrule state agency decisions under the Clean Air Act that a company is using the "best available controlling technology" to prevent pollution.^[1]