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

EPA Designated Federal Officer (DFO):Aaron Yeow

Responsible Committee/Panel:Ozone Review Panel

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EPA’s Office of Research and Development has requested CASAC peer review its third 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 and previously reviewed the second 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, 6 pp., 72,537 bytes)

Agency Review Document(s):

PDF for Integrated Science Assessment of Ozone and Related Photochemical Oxidants (Third External Review Draft, June 2012, EPA/600/R-10/076C ). (PDF, 1,262 pp., 38,890,928 bytes)

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