The U.S. Court of Appeals for the District of Columbia ruled August 17 that food producers, petroleum producers and suppliers, and engine and automobile manufacturers challenging the Environmental Protection Agency’s decision to grant two partial waivers under the Clean Air Act to allow the use of gasoline containing up to 15 percent ethanol lack standing to do so. The court determined, 2-1, that none of the industry groups could demonstrate that they were harmed by the rule.