EPA Clean Air Scientific Advisory Committee (CASAC)

Nitrogen Oxides Risk and Exposure Assessment Planning Document for Primary (Health-based) National Ambient Air Quality Standards (NAAQS)

EPA Designated Federal Officer (DFO):Aaron Yeow
202-564-2050
yeow.aaron@epa.gov
Responsible Committee/Panel:CASAC Oxides of Nitrogen Primary NAAQS Review Panel (2013-2016)

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


BACKGROUND
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 nitrogen oxides. EPA is currently reviewing the primary (health-based) NAAQS for nitrogen dioxide (NO2) as an indicator for health effects caused by the presence of oxides of nitrogen in the ambient air. Primary standards set limits to protect public health, including the health of "sensitive" populations such as asthmatics, children, and the elderly.

As part of the NAAQS review process, EPA’s Office of Air and Radiation has requested CASAC advice on a draft EPA planning document entitled "Review of the National Ambient Air Quality Standards for Nitrogen Dioxide: Risk and Exposure Assessment Planning Document.."

Agency Charge . (PDF, 6 pp., 29,130 bytes)

Agency Review Document(s):

PDF for Review of the Primary National Ambient Air Quality Standards for Nitrogen Dioxide: Risk and Exposure Assessment Planning Document (May 2015 Draft). (PDF, 138 pp., 4,061,639 bytes)