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Review of the Primary National Ambient Air Quality Standard for Sulfur Oxides: Risk and Exposure Assessment
Citation:
Review of the Primary National Ambient Air Quality Standard for Sulfur Oxides: Risk and Exposure Assessment .
Impact/Purpose:
The Risk/Exposure Assessment will include, as appropriate, quantitative and qualitative estimates of human health risks/exposures associated with current ambient levels of sulfur dioxide, concentrations that just meet the current standard(s), and possible alternative standards. A concise risk/exposure assessment report will be prepared that focuses on key results, observations, and uncertainties. Following the review of the first draft of this document (Risk and Exposure Assessment for the Review of the Primary National Ambient Air Quality Standard for Sulfur Oxides, External Review Draft), as needed, a second draft will be produced and also provided to CASAC for review as well as made available to the public for review and comment. A final draft document will be produced after considering CASAC and public comments. All documents will be made publicly available.
Description:
Sulfur oxides are one of the six major air pollutants for which EPA has issued air quality criteria and established national ambient air quality standards (NAAQS) based on those criteria. The Clear Air Act (CAA) requires EPA to periodically review and revise, as appropriate, existing air quality criteria and NAAQS. The CAA also requires an independent scientific committee to review the criteria and to advise the Administrator regarding any recommended revisions to the existing criteria and standards, as may be appropriate. The Clean Air Scientific Advisory Committee (CASAC) of EPA’s Science Advisory Board serves as this independent scientific committee.
URLs/Downloads:
Peer Review Plan (PDF, NA pp, 39 KB, about PDF)Risk and Exposure Assessment for the Review of the Primary National Ambient Air Quality Standard for Sulfur Oxides, External Review Draft (PDF, NA pp, 14886 KB, about PDF)
Risk and Exposure Assessment for the Review of the Primary Natio