On August 14, the U.S. Environmental Protection Agency (EPA) published its proposal to retain the existing ozone national ambient air quality standards (NAAQS). The proposal sets an October 1 deadline for public comment and schedules two virtual hearings, for August 31 and September 1, 2020. The current ozone NAAQS were established in 2015 and set 70 parts per billion for both primary and secondary standards.
On July 28, Judge John Koeltl of the U.S. District Court for the Southern District of New York ordered the U.S. Environmental Protection Agency (EPA) to issue Federal Implementation Plans for the 2008 ozone National Ambient Air Quality Standards (NAAQS) that fully address the “good neighbor” obligations under the Clean Air Act by March 2021. The plans will force upwind Northeastern states (Illinois, Indiana, Michigan, Ohio, Pennsylvania, Virginia, and West Virginia) to curb air emissions that otherwise impede the ability of neighboring downwind states (New York, Connecticut, New Jersey, and Massachusetts) from meeting the statutory July 20, 2021 attainment deadline set forth in the 2008 ozone NAAQS.