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About the Science Advisory Board (SAB) and the SAB Staff Office

Related Information
  • Contact the SAB Staff Office
  • Science Advisory Board
  • Clean Air Scientific Advisory Committee(CASAC)

What We Do

A key priority for EPA is to base Agency actions on sound scientific data, analyses, and interpretations. To accomplish this, the SAB Staff Office manages two federal advisory committees: the Science Advisory Board (SAB); and, the Clean Air Scientific Advisory Committee (CASAC).   These committees provide a mechanism for the Agency to receive peer review and other advice designed to make a positive difference in the production and use of science at EPA. The SAB is authorized to:

  • Review the quality and relevance of the scientific and technical information being used by the EPA or proposed as the basis for Agency regulations
  • Review EPA research programs and plans
  • Provide science advice as requested by the EPA Administrator
  • Advise the Agency on broad scientific matters

The CASAC is authorized to:

  • Provide independent advice to the EPA Administrator on the technical bases for EPA’s National Ambient Air Quality Standards.

The SAB Staff Office

  • Manages EPA requests for scientific and technical advice and peer review
  • Provides policy, technical and administrative assistance to advisory committees in conducting meetings and preparing reports
  • Oversees the formation of advisory committees and panels, ensuring that the needed breadth and depth of expertise and balanced points are achieved
  • Informs the public of committee advisory activities through Federal Register Notices
  • Ensures that committees conduct advisory activities in public
  • Provides the public with opportunities to provide input during the advisory process

Programs and projects managed by the SAB Staff Office

  • Science Advisory Board
  • Clean Air Scientific Advisory Committee (CASAC)

Mail code: 1400A | EPA mailing addresses
Location:  EPA Headquarters at Washington, D.C. Federal Triangle campus

SAB Organization

Tom Brennan, Director, SAB Staff Office
  • Biography
  • Phone: 202-564-6953
  • Email Tom Brennan (brennan.thomas@epa.gov)
Khanna Johnston, Deputy Director, SAB Staff Office
  • Phone: 202-564-2820
  • Email Khanna Johnston (johnston.khanna@epa.gov)

About EPA

  • Our Mission and What We Do
  • Headquarters Offices
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  • EPA Organization Chart
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Contact EPA
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 9, 2025
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