EPA Clean Air Scientific Advisory Committee (CASAC)

Nitrogen Oxides (NOx) and Sulfur Oxides (SOx) Integrated Plan for Primary National Ambient Air Quality Standards (NAAQS)

EPA Designated Federal Officer (DFO):Fred Butterfield

Responsible Committee/Panel:Oxides of Nitrogen Primary NAAQS Review Panel
A list of members can be found in the final report included in the Advisory Activity linked to this panel or committee.

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

EPA’s Office of Air and Radiation has requested advice to help in revising the primary (health-based) standards for the national ambient air quality standards for nitrogen oxides (NOx) and sulfur oxides (SOx). 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 NOx and SOx. Primary standards set limits to protect public health, including the health of "sensitive" populations such as asthmatics, children, and the elderly.

Review of this initial combined plan for NOx and SOx was followed by separate, parallel CASAC NAAQS reviews for the two criteria pollutants.