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Sulfur Dioxide (SO2) Primary Standards -
Documents from Review Completed in 2010 -
Risk and Exposure Assessments

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.

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File Description File Date File Types
Transmittal memo to CASAC for the Risk and Exposure Assessment to Support the Review of the SO2 Primary NAAQS - Final Report Aug 2009 PDF file
31 kb
Risk and Exposure Asessment to support the review of the SO2 Primary NAAQS - Final Report Aug 2009 PDF file
25.9 MB
Presentation and analysis of controlled human exposure data described in Table 3-1 of the 2008 Integrated Science Assessment (ISA) for Sulfur Oxides, Johns 4/29/09 memo
Apr 2009 PDF file
118 kb
Risk and Exposure Assessment to Support the Review of the SO2 Primary NAAQS - Second Draft Mar 2009 PDF file
16.5 MB
Investigation of How Distributions of Hourly SO2 Concentrations Have Changed Over Time in Six Cities, Rizzo memo, 3/16/09 Mar 2009 PDF file
357 kb
Air Quality Statistics for Cities Referenced in Key U.S. and Canadian Epidemiological Studies of Hospital Admission and Emergency Department Visits for All Respiratory Causes and Asthma - Thompson and Stewart, 3/25/09 memo Mar 2009 PDF file
825 kb
Risk and Exposure Assessment to Support the Review of the SO2 Primary National Ambient Air Quality Standards - First Draft (includes July 2008 errata sheet) Jun 2008 PDF file
3.8 MB

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