Ozone Policy Assessment (2023)


EPA has made the determination to reconsider the December 2020 decision to retain the ozone National Ambient Air Quality Standards (NAAQS). These standards were last revised in 2015. EPA has requested CASAC review of the Policy Assessment for the Reconsideration of the Ozone National Ambient Air Quality Standards, External Review Draft Version 2.

On this page:

See EPA’s PDF page to learn more about PDF files.


Public Meetings and/or Teleconferences

Meeting DateTitle
05/23/2023 to 05/24/2023Chartered CASAC and CASAC Ozone Panel Meeting
03/29/2023 to 03/30/2023CASAC Ozone Panel PA Meeting
03/02/2023 to 03/02/2023CASAC Ozone Panel PA Briefing

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