The state Department of Environmental Protection on Thursday filed a petition for review with the U.S. Court of Appeals for the District of Columbia Circuit, challenging the federal Environmental Protection Agency's new standards on TCE. The agency's new rule exempted two Collegeville companies from reducing their emissions.

Air monitors in the area around the two companies have registered Pennsylvania's highest amounts of airborne TCE, or trichloroethylene, which is a degreaser used in metal tubing.  

Gov. Rendell, in announcing the petition, said the exemption "fails to protect the well-being of our people, our communities and our economy."
-Sandy Bauers