Nitrogen Oxides Integrated Science Assessment (First External Review Draft) for Primary (Health-based) National Ambient Air Quality Standards (NAAQS)


Under the Clean Air Act, EPA is required to carry out a periodic review and revision, as appropriate, of the air quality criteria and the primary and secondary standards for six criteria air pollutants, which include oxides of nitrogen (NOx). EPA is currently reviewing the primary (health-based) standard for the Nitrogen Dioxide National Ambient Air Quality Standards (NAAQS).EPA's Office of Research and Development has requested a peer review of the First External Review Draft of its Integrated Science Assessment for Oxides of Nitrogen & Health Criteria. The final Integrated Science Assessment is intended to provide a synthesis and evaluation of science relevent for reviewing and revising the primary (health-based) standard for the Nitrogen Dioxide NAAQS.

On this page:

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

Agency Review Background URLs

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Panel Formation

Nominations of Experts:


Public Meetings and/or Teleconferences

Meeting DateTitle
05/07/2014 to 05/07/2014Public Teleconference of the Chartered Clean Air Scientific Advisory Committee (CASAC) and the CASAC Oxides of Nitrogen Primary NAAQS Review Panel
03/12/2014 to 03/13/2014CASAC Oxides of Nitrogen Review Panel Meeting

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Agency Response

Agency Response

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