EPA to Propose Huge Ozone Regulations

After a long battle, the EPA is prepared to release on Wednesday significant regulations working to curb emissions of ozone, the smog-causing pollutant that has been linked to asthma, heart disease, and premature death. The proposed regulation will lower the current threshold for ozone, which is 75 parts per billion, to a range of 65 to 70 parts per billion. Environmental groups had sought 60 parts per billion. Led by Sen. Mitch McConnell of Kentucky, the incoming majority leader, the Republican-controlled Congress has said it will block and overturn all new EPA regulations focused on cleaner air.