The St. Louis area could have years of additional work ahead of it to comply with new federal smog standards released Thursday, and other parts of the state also may have to take action to reduce emissions.
The Environmental Protection Agency released new ozone regulations at the high end of a range laid out by the agency when it initially proposed the regulations last November.
The St. Louis area, which was nearing compliance with regulations established in 2008, now must reach lower emissions targets. The EPA projects the region will hit the new marks by 2025.
St. Louis was the only region in Missouri that exceeded the 2008 smog limits. But with Thursday’s announcement, other parts of the state may need to reduce emissions from factories and power plants or launch vehicle emission testing programs.