Lynn L. Bergeson, “EPA’s Air Office Recommends Lowering Ozone NAAQS,” Pollution Engineering CoffeHaus Blog, September 8, 2014.

The EPA’s Office of Air Quality Planning and Standards (OAQPS) has concluded that there is adequate evidence for lowering the existing National Ambient Air Quality Standard (NAAQS) for ozone (O3) from 75 parts per billion to between 70 ppb and 60 ppb. The recommendation is found in a 600 page long Policy Assessment for the Review of the Ozone National Ambient Air Quality Standards, issued on Aug. 29, 2014.