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Ozone Integrated Science Assessment (Second External Review Draft) for National Ambient Air Quality Standards Review

EPA Designated Federal Officer (DFO):Aaron Yeow
202-564-2050
yeow.aaron@epa.gov

Responsible Committee/Panel:Ozone Review Panel

PLEASE NOTE: Some of the items mentioned in this page are in Adobe's Portable Document Format (PDF). To view or print them you will need to have the Adobe Acrobat Reader program installed on your computer. The Reader can be downloaded and used with no charge. Click here for more information from EPA on PDF files.
 

BACKGROUND.

EPA’s Office of Research and Development has requested CASAC peer review its second external review draft "Integrated Science Assessment for Ozone and Related Photochemical Oxidants," intended to provide a synthesis and evaluation of science relevant for revising the national ambient air quality standards for particulate matter. The CASAC previously reviewed the first external review draft of the Agency's Integrated Science Assessment.

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 ozone. 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.


Agency Charge . (PDF, 5 pp., 159,003 bytes)

Agency Review Document(s):

PDF for Integrated Science Assessment for Ozone and Related Photochemical Oxidants - Second External Review Draft, September 2011. (PDF, 1,222 pp., 33,707,977 bytes)


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