Review of the National Ambient Air Quality Standards for Ozone (Ozone rule, ozone NAAQS)

Environmental Protection Agency

Monday, Dec. 1, is the court-ordered deadline for EPA to issue its proposed update to the ozone air quality standard. On April 29, a judge in the U.S. District Court for Northern California issued a ruling from the bench requiring that EPA issue a proposed revision to the standard (or a decision to let the current standard stand) by Dec. 1, and a final decision by Oct. 1, 2015, despite the agency’s pleas for more time.