Integrated Science Assessment (ISA) for Ozone and Related Photochemical Oxidants (Final Report, Feb 2013)
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Ozone (O3) is one of six principal (or criteria) pollutants for which EPA has established national ambient air quality standards (NAAQS). The Clean Air Act requires EPA to periodically review the scientific basis for these standards by preparing an Integrated Science Assessment (ISA). The ISA, in conjunction with additional technical and policy assessments, provide the scientific basis for EPA decisions on the adequacy of the current NAAQS and the appropriateness of possible alternative standards. These reviews play a significant role in EPA’s commitment to ensuring a clean and healthy environment for the public.
|Sep 2008||EPA announced notice of workshop and call for Information on Integrated Science Assessment. [Federal Register Sep 29, 2008]|
|Sep 2009||EPA released an Integrated Review Plan for the Ozone National Ambient Air Quality Standards (PDF, 78pp, 486Kb) (EPA 452/D-09-001).|
|Feb 2011||EPA's Science Advisory Board's CASAC announced a meeting of the Ozone Review Panel for the Reconsideration of the 2008 National Ambient Air Quality Standard. [Federal Register Feb 28, 2011] Also, EPA released the first external review draft for public review and comments. [Federal Register Feb 28, 2011]|
|Sep 2011||EPA released the second external review draft for public review and comments. [Federal Register Sep 30, 2011]|
|Jun 2012||EPA released the third external review draft for public review and comments. [Federal Register Jun 19, 2012]|
|Feb 2013||EPA released the Integrated Science Assessment of Ozone and Related Photochemical Oxidants (Final Report) (EPA/600/R-10/076F). [Federal Register Notice Feb 15, 2013]|
This document has been reviewed in accordance with U.S. Environmental Protection Agency policy and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
- (1251 pp, 40 MB, about PDF)
- Air Quality Criteria For Ozone and Related Photochemical Oxidants (Final Report, 2006)
- Integrated Science Assessment (ISA) for Ozone and Related Photochemical Oxidants (First External Review Draft, Feb 2011)
- Integrated Science Assessment (ISA) for Ozone and Related Photochemical Oxidants (Second External Review Draft, Sep 2011)
- Integrated Science Assessment (ISA) for Ozone and Related Photochemical Oxidants (Third External Review Draft, Jun 2012)