An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Clean Air Act Advisory Committee (CAAAC)

Phase I Recommendations by the Air Quality Management Work Group to the Clean Air Act Advisory Committee

In June 2004, the Clean Air Act Advisory Committee (CAAAC) formed the Air Quality Management Work Group. The Work Group’s task was to assess the recommendations made by the National Research Council (NRC) of the National Academies in its 2004 report, Air Quality Management in the United States, and to advise the CAAAC on ways to improve the U.S. air quality management system, with an emphasis on activities that could be accomplished in the next one to five years.

In this report, the Work Group advances detailed recommendations. These recommendations address the five main areas of concern of the NRC:
1) Strengthening scientific and technical capacity.
2) Expanding national and multistate control strategies.
3) Transforming the SIP process.
4) Developing an integrated program for criteria and hazardous air pollutants.
5) Enhancing protection of ecosystems and public welfare.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.