HOMER CITY, Pa. (AP) - The U.S. attorney's office in Pittsburgh is suing in federal court over pollution emissions from a coal-burning electricity generating plant.
The lawsuit was filed Thursday. It calls the plant "one of the largest air pollution sources in the nation."
The defendants are the current and past operators of the plant in Homer City, a tiny rural community about 50 miles east of Pittsburgh.
The federal government wants the court to prevent the plant from operating unless it meets standards of the Clean Air Act, civil penalties and other relief.
A spokesman for Santa Ana, Calif.-based plant operator Edison Mission Energy says the company has spent about $300 million since its 1999 purchase to reduce emissions. He says it appears any violations occurred before it acquired the facility.
Companies or subsidiaries in Ohio and New York also are defendants.