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

Integrated Science Assessment for Particulate Matter (Final Report)

Notice

EPA is announcing the availability of the final Integrated Science Assessment for Particulate Matter as described in the December 15, 2009 Federal Register Notice.

Report Information

EPA has released the final Integrated Science Assessment (ISA) for Particulate Matter (PM). This is EPA’s latest evaluation of the scientific literature on the potential human health and welfare effects associated with ambient exposures to particulate matter (PM). The development of this document is part of the Agency's periodic review of the national ambient air quality standards (NAAQS) for PM. The recently completed PM ISA and supplementary annexes, in conjunction with additional technical and policy assessments developed by EPA’s Office of Air and Radiation, will provide the scientific basis to inform EPA decisions related to the review of the current PM NAAQS.

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Jason Sacks
  • by phone at:   919-541-9729
  • by email at:  sacks.jason@epa.gov

Background

Cover of the Integrated Science Assessment (ISA) for Particulate Matter PM is one of six principal (or criteria) pollutants for which EPA has established NAAQS. Periodically, EPA reviews the scientific basis for these standards by preparing an ISA (formerly called an Air Quality Criteria Document). The ISA and supplementary annexes, 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. The Clean Air Scientific Advisory Committee (CASAC), an independent science advisory committee whose existence and whose review and advisory functions are mandated by Section 109 (d) (2) of the Clean Air Act, is charged (among other things) with independent scientific review of EPA's air quality criteria.

The first and second drafts of the PM ISA were released on December 22, 2008 and July 31, 2009, respectively, for independent external peer review and public comment. These drafts were reviewed at public meetings of the CASAC PM Review Panel on April 1-2, 2009 and October 5-6, 2009, respectively. This final PM ISA has benefited from the expert comments received at the CASAC meetings and from public comments, and it has been revised accordingly.

History/Chronology

1969EPA published the first Air Quality Criteria for Particulate Matter and Air Quality Criteria for Sulfur Oxides.
1970EPA published an update to the Air Quality Criteria for Particulate Matter and Air Quality Criteria for Sulfur Oxides.
1977The Air Quality Criteria Document (including 3 volumes) were updated in response to specific requirements of Section 108 of the Clean Air Act, as amended in 1977.
Dec 1982EPA published an update to the Air Quality Criteria for Particulate Matter and Sulfur Oxides.
Dec 1986EPA published the Second Addendum to Air Quality Criteria for Particulate Matter and Sulfur Oxides (1982): Assessment of New Findings on Sulfur Dioxide and Acute Exposure Health Effects in Asthmatic Individuals.
Aug 1994EPA published the Supplement to the Second Addendum (1986) to Air Quality Criteria for Particulate Matter and Sulfur Oxides (1982): Assessment of New Findings on Sulfur Dioxide and Acute Exposure Health Effects in Asthmatic Individuals.
Apr 1996EPA released an updated Air Quality Criteria Document for Particulate Matter (Final Report).
1997-2004EPA released multiple external review drafts for comment and review.
Oct 2004EPA released an updated Air Quality Criteria Document for Particulate Matter (Final Report).
Jul 2006EPA released the Provisional Assessment of Recent Studies on Particulate Matter.[Federal Register Jul 21, 2006]
Mar 2008EPA released the final plan, Integrated Review Plan for the National Ambient Air Quality Standard for Particulate Matter(EPA/452/R-08/004).
Dec 2008EPA released the first external review draft of the ISA for PM assessment for public review and comment.[Federal Register Dec 19, 2008]
Feb 2009EPA's Science Advisory Board (SAB) announced a public meeting of the Clean Air Scientific Advisory (CASAC) PM Review Panel to discuss the PM ISA (First External Review Draft). [Federal Register Feb 19, 2009]
Jul 2009EPA released the second external review draft for public review and comment.[Federal Register Jul 31, 2009]
Sep 2009EPA's Science Advisory Board (SAB) announced a public meeting of the Clean Air Scientific Advisory (CASAC) PM Review Panel to discuss the PM ISA (Second External Review Draft). [Federal Register Sep 10, 2009]
Dec 2009EPA released the Integrated Science Assessment for Particulate Matter (Final Report). [Federal Register Dec 15, 2009]
Feb 2010EPA reposts the final assessment with an errata sheet of updates.

Next Steps

This is the final document. Additional technical and policy assessment documents for this review are available from the Office of Air Quality Planning and Standards (http://www.epa.gov/ttn/naaqs/standards/pm/s_pm_index.html).

Citation

U.S. EPA. Integrated Science Assessment for Particulate Matter (Final Report). U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-08/139F, 2009.

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