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Reviewing National Ambient Air Quality Standards (NAAQS)

Sulfur Dioxide (SO2) Primary Standards -
Documents from Review Completed in 2010 -
FR Notices

Information provided for informational purposes only Note: EPA no longer updates this information, but it may be useful for historical purposes. See the SO2 Standards Home Page for documents from the current review of the SO2 NAAQS.

From the listing below, find the file you would like to download. The document may be available in one or more file formats, as represented by the icons on the righthand side of the listing. Click on the icon that represents the format you wish to receive.

Rulemaking Notices / Public Hearings

Final Revisions to the Primary NAAQS for SO2 6/22/2010 PDF file
624 kb
Proposed Revisions to the Primary National Ambient Air Quality Standards for SO2 12/08/09 PDF file
672 kb

Pre-Rulemaking Documents / Availability and Opportunities for Public Comment

Notice of Availability - Risk and Exposure Assessment to Support the Review of the SO2 Primary NAAQS 07/29/09 PDF file
80 kb
Notice of Extension of Public Comment Period - Second Draft Risk and Exposure Assessment Report 05/21/09 PDF file
76 kb
Notice of Availability- Second Draft SO2 Risk and Exposure Assessment 04/23/09 PDF file
85 kb
Notice of Availability SO2 Risk and Exposure Assessment Report - First Draft 07/21/08 pdf file
94 KB
Announcement of Availability of ISA for Sulfur Oxides - Health Criteria (Second External Review Draft) 05/30/08 pdf file
78 KB
Integrated Science Assessment for SOx: Call for Information 05/15/06 PDF file
80 KB

Public Meetings / Workshops

Workshop on Assessment of Health Science for Nitrogen Oxides (NOx) and Sulfur Oxides (SOx) 02/09/07 PDF file
68 KB

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