Entergy Corporation v. Riverkeeper, Inc., et al. (556 U.S. 208)

U.S. Supreme Court · decided April 1, 2009 · Supreme Court Database (Spaeth)

Citation
556 U.S. 208 · 129 S. Ct. 1498
Decided
April 1, 2009
Term
October Term 2008
Vote
5–4
Majority author
Justice Scalia
Issue area
Economic Activity
Disposition
Reversed and remanded
Outcome
Petitioning party won
Ideological direction
Conservative

Opinion excerpt

Justice Scalia delivered the opinion of the Court. These cases concern a set of regulations adopted by the Environmental Protection Agency (EPA or agency) under § 316(b) of the Clean Water Act, 33 U.S.C. § 1326(b). 69 Fed. Reg. 41576 (2004). Respondents — environmental groups and various States — challenged those regulations, and the Second Circuit set them aside. Riverkeeper, Inc. v. EPA, 475 F. 3d 83, 99-100 (2007). The issue for our decision is whether, as the Second Circuit held, the EPA is not permitted to use cost-benefit analysis in determining the content of regulations promulgated under § 1326(b). I Petitioners operate — or represent those who operate— large powerplants. In the course of generating power, those plants also generate large amounts of heat. To cool their facilities, petitioners employ “cooling water intake structures” that extract water from nearby water sources. These structures pose various threats to the environment, chief among them the squashing against intake screens (elegantly called “impingement”) or suction into the cooling system (“entrainment”) of aquatic organisms that live in the affected water sources. See 69 Fed. Reg. 41586. Accordingly, the facilities are subject to regulation under the Clean Water Act, 33 U. S. C. § 1251 et seq., which mandates: “Any standard established pursuant to section 1311 of this title or section 1316 of this…

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