WASHINGTON (CNN) - During Supreme Court nominee Sonia Sotomayor's 17 years as a federal judge, the U.S. Supreme Court has reviewed her decisions on at least eight occasions. CNN has reviewed those cases and has summarized each in a series of posts. The names and citations reflect the cases as they were known when they first came before Sotomayor.
Riverkeeper, Inc. vs. EPA (2007), 475 F.3d 83: Sotomayor, writing for a three-judge panel, ruled that the Environmental Protection Agency may not engage in a cost-benefit analysis in implementing a rule that the "best technology available" must be used to limit the environmental impact of power plants on nearby aquatic life. The case involved power plants that draw water from lakes and rivers for cooling purposes, killing various fish and aquatic organisms in the process. Sotomayor ruled that the "best technology" regulation did not allow the EPA to weigh the cost of implementing the technology against the overall environmental benefit when issuing its rules. The Supreme Court reversed Sotomayor's ruling in a 6-3 decision, saying that Sotomayor's interpretation of the "best technology" rule was too narrow. Justices Stevens, Souter, and Ginsburg dissented, siding with Sotomayor's position.