Over the course of each NAAQS review, EPA publishes notices in the Federal Register for a variety of activities: the kick-off workshop and call for information, CASAC meetings, availability of pre-rulemaking documents and opportunities for comment on these documents, as well as proposed and final rulemaking decisions and public hearings on a proposed rulemaking decision.

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Rulemaking Notices / Public Hearings

• Review of the O₃ NAAQS, Final Decision - December 31, 2020 (signed December 23, 2020)
• Review of the O₃ NAAQS, Proposed Decision and Notice of Public Hearings - August 14, 2020 (signed July 13, 2020)

Pre-Rulemaking Documents / Availability and Opportunities for Public Comment

• Notice of Availability – Policy Assessment - May 22, 2020
• Notice of Availability – Integrated Science Assessment - April 20, 2020
• Notice of Availability – Draft Policy Assessment - November 1, 2019
• Notice of Availability – Draft Integrated Science Assessment - September 26, 2019
• Notice of Availability - Integrated Review Plan for the O₃ NAAQS  - August 22, 2019
• Notice of Availability and Public Comment Period - Draft Integrated Review Plan for the O₃ NAAQS - November 2, 2018
• Notice of Webinar Workshop to Review Initial Draft Materials for the Integrated Science Assessment  - October 23, 2018
• Call for Scientific and Policy-relevant Information for the Integrated Science Assessment and Integrated Review Plan - June 26, 2018

Public Meetings / Workshops

• Notice of CASAC Teleconference on February 11-12, 2020- January 27, 2020
• Notice of CASAC Public Meeting on December 3-6, 2019 -November 1, 2019
• Notice of CASAC Teleconference on November 29, 2018- November 6, 2018

You may also be interested in other documents from the current O₃ NAAQS review.