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Air Quality: EPA's Integrated Science Assessments (ISAs)

Integrated Science Assessment of Ozone and Related Photochemical Oxidants (Final Report)

Notice

EPA is announcing the availability of the final Integrated Science Assessment of Ozone and Related Photochemical Oxidants as described in the February 15, 2013 Federal Register Notice.

Report Information

EPA is announcing the availability of the Integrated Science Assessment of Ozone and Related Photochemical Oxidants (Final Report). This document represents a concise synthesis and evaluation of the most policy-relevant science and will ultimately provide the scientific bases for EPA’s decision regarding the adequacy of the current national ambient air quality standards for ozone to protect human health, public welfare, and the environment.

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James S. Brown
  • by phone at:   919-541-0765
  • by email at:  brown.james@epa.gov

Background

Cover of the Integrated Science Assessment (ISA) for Ozone and Related Photochemical Oxidants 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.

History/Chronology

Sep 2008EPA announced notice of workshop and call for Information on Integrated Science Assessment. [Federal Register Sep 29, 2008]
Sep 2009EPA released an Integrated Review Plan for the Ozone National Ambient Air Quality Standards (PDF, 78pp, 486Kb) (EPA 452/D-09-001).
Feb 2011EPA'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 2011EPA released the second external review draft for public review and comments. [Federal Register Sep 30, 2011]
Jun 2012EPA released the third external review draft for public review and comments. [Federal Register Jun 19, 2012]
Feb 2013EPA released the Integrated Science Assessment of Ozone and Related Photochemical Oxidants (Final Report) (EPA/600/R-10/076F). [Federal Register Notice Feb 15, 2013]

Citation

U.S. EPA. Integrated Science Assessment of Ozone and Related Photochemical Oxidants (Final Report). U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-10/076F, 2013.

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