The EPA's acting administrator signed a proposal that would loosen rule that would have required cutting-edge carbon capture techniques for new coal plants. Andrew Wheeler said the requirements were "excessive burdens" on the industry.
The Truck and Engine Manufacturers Association, which represents Indiana-based Cummins Inc. and other engine manufacturers, said the proposal represents a chance to modernize how the agency oversees big-rig emissions.
The site is called the Broadway Street Corridor Groundwater Plume. Officials have reported finding contaminated groundwater with concentrations of trichloroethene, tetrachloroethene and other chemicals.
The plan would give states broad authority to determine how to restrict carbon dioxide and other greenhouse gas emissions that contribute to global warming. It also would let states relax pollution rules for power plants that need upgrades.