20
August
2020
EPA’s Proposal to Freeze Ozone National Ambient Air Quality Standards Issued in Anticipation of Criticism
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.
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