EPA Clean Air Scientific Advisory Committee (CASAC)

Particulate Matter Policy Assessment for the National Ambient Air Quality Standards (NAAQS)

EPA Designated Federal Officer (DFO):Aaron Yeow
Responsible Committee/Panel:CASAC

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

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 particulate matter. EPA is currently reviewing the NAAQS for particulate matter. Primary standards set limits to protect public health, including the health of "sensitive" populations such as asthmatics, children, and the elderly. Secondary standards set limits to protect public welfare, including protection against decreased visibility, damage to animals, crops, vegetation, and buildings.

As part of the NAAQS review process, EPA’s Office of Air and Radiation has requested CASAC review of the draft Policy Assessment.

Agency Charge . (PDF, 5 pp., 173,746 bytes)

Agency Review Document(s):

PDF for Policy Assessment for the Review of the National Ambient Air Quality Standards for Particulate Matter (External Review Draft - September 2019). (PDF, 457 pp., 15,904,295 bytes)