Sulfur Dioxide (SO2) Air Quality Standards - Documents from Review Completed in 2010
Federal Register Notices
-Rulemaking Notices / Public Hearings
- Final Revisions to the SO2 Primary NAAQS, June 22, 2010
- Proposed Revisions to the SO2 Primary NAAQS, Dec 8, 2009
-Pre-Rulemaking Documents / Availability and Opportunities for Public Comment
- Notice of Availability of Risk and Exposure Assessment to Support the Review of the SO2 Primary NAAQS, July 29, 2009
- Notice of Extension of Public Comment Period on Second Draft Risk and Exposure Assessment, May 21, 2009
- Notice of Availability - Second Draft SO2 Risk and Exposure Assessment, April 23, 2009
- Notice of Availability - First Draft SO2 Risk and Exposure Assessment - July 21, 2008
- Notice of Availability of ISA for Sulfur Oxides - Health Criteria (Second External Review Draft) - May 30, 2008
- Integrated Science Assessment for Sulfur Oxides: Call for Information May 15, 2006
-Public Meetings / Workshops
Litigation
- Court Decision upholding the 2010 SO2 NAAQS July 20, 2012 (PDF)(54.93 KB)
- Amendment to 2007 Consent Decree - 12/04/2008 (PDF) (4 pp, 43 K)
- Consent Decree with schedules for SO2 and NO2 primary NAAQS and NO2/SO2 secondary NAAQS reviews - 11/19/2007 (PDF) (8 pp, 74 K)
- Notice of proposed consent decree - request for public comment - 09/20/2007
Response to Comments
Planning Documents
- Health Assessment Plan: Scope and Methods for Exposure and Risk Assessment 11-14-2007
- SO2 NAAQS Review Plan - Final 10-09-2007
- SO2 NAAQS Review Plan - Draft 4-17-2007
Integrated Science Assessments (ISAs)\Criteria Documents
- Integrated Science Assessment for Oxides of Sulfur - Health Criteria (Final Report) Sep 2008
- ISA for Sulfur Oxides - Health Criteria (Second External Review Draft) May 2008
- ISA for Sulfur Oxides - Health Criteria, with Annexes (First External Review Draft) Sep 2007
Technical Documents
- Transmittal memo to CASAC of Risk and Exposure Assessment for Review of the SO2 Primary NAAQS - Final Report Aug 3, 2009 (PDF) (5 pp, 31 K)
- Risk and Exposure Assessment for Review of the SO2 Primary NAAQS, Final Report - Aug 2009
- Presentation and Analysis of Controlled Human Exposure Data Described in Table 3-1 of the 2008 Integrated Science Assessment (ISA) for Sulfur Oxides, Johns Memo - 4/29/09
- Risk and Exposure Assessment for Review of the SO2 Primary NAAQS, Second Draft - Mar 2009
- Investigation of How Distributions of Hourly SO2 Concentrations Have Changed Over Time in Six Cities, Rizzo Memo - 3/16/09
- 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 memo - March 25, 2009
- Risk and Exposure Assessment for Review of the SO2 Primary NAAQS, First Draft (includes July 2008 errata sheet) - June 2008
CASAC Documents