EPA Clean Air Scientific Advisory Committee (CASAC)

The Clean Air Scientific Advisory Committee (CASAC) provides independent advice to the EPA Administrator on the technical bases for EPA's National Ambient Air Quality Standards.
  • More about the CASAC
    Established in 1977 under the Clean Air Act (CAA) Amendments of 1977 (see 42 U.S.C. 7409(d)(2)), CASAC also addresses research related to air quality, sources of air pollution, and the strategies to attain and maintain air quality standards and to prevent significant deterioration of air quality. The Chair of the CASAC also serves as a member of the chartered Science Advisory Board.
  • About this Website

    This website provides information on:

    • the committees and membership of the CASAC, including the annual process for nominating and providing comment on candidate experts to serve on the chartered CASAC and CASAC standing committees,
    • CASAC advisory activities and reports,
    • how you can participate in the science advisory process, including the use of EPA's Web-based process for public nomination of experts, and
    • how to contact the CASAC's Designated Federal Officer to obtain additional information about the CASAC.
    Our recent additions page provides information on recent draft reports, Federal Register notices, upcoming meetings, recently announced advisory activities, and recently finalized reports.

  • Recent additions and CASAC Recent Happenings RSS More about RSS news feeds (USA.gov)

Upcoming and Recent Meetings

  • 01/27/2016 Public Meeting of the Clean Air Scientific Advisory Committee (CASAC) Sulfur Oxides Panel
  • 02/29/2016 Public Teleconference of the Clean Air Scientific Advisory Committee (CASAC) Secondary NAAQS Review Panel for Oxides of Nitrogen and Sulfur and the Chartered CASAC
  • 04/06/2016 Public Teleconference of the Chartered Clean Air Scientific Advisory Committee (CASAC) and the CASAC Sulfur Oxides Panel
More Meetings

Recent Reports

Advisory Reports
  • 09/09/2015 - CASAC Review of the EPA’s Integrated Science Assessment for Oxides of Nitrogen – Health Criteria (Second External Review Draft – January 2015)
  • 09/09/2015 - CASAC Review of the EPA’s Review of the Primary National Ambient Air Quality Standards for Nitrogen Dioxide: Risk and Exposure Assessment Planning Document
  • 07/28/2014 - Review of EPA’s Recommendation for an Additional Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence
  • 07/24/2014 - 07CASAC Review of the EPA's Integrated Review Plan for the Primary National Ambient Air Quality Standard for Sulfur Dioxide (External Review Draft - March 2014)
  • 07/01/2014 - CASAC Review of the EPA's Health Risk and Exposure Assessment for Ozone (Second External Review Draft - February, 2014
More Reports and Agency Responses

Committees, Panels and Membership