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  2. Sulfur Dioxide (SO2) Pollution

Fact Sheets and Additional Information Regarding the Primary National Ambient Air Quality Standard (NAAQS) for Sulfur Dioxide

This page contains a fact sheet on the 2019 decision to retain the existing standard, as well as fact sheets and other documents related to the setting of the existing standard in 2010.  This page also contains a pre-publication version of the final decision. 

For more information, visit the SO2 NAAQS page.

  • Fact Sheet: Final Decision Primary National Ambient Air Quality Standard for Sulfur Oxides (pdf) (165.84 KB)
    This fact sheet provides an overview of the decision to retain without revision the 2010 national ambient air quality standard for sulfur oxides.
  • Fact Sheet: Revisions to the Primary National Ambient Air Quality Standard (NAAQS) Monitoring Network, and Data Reporting Requirements for Sulfur Dioxide (SO2) (pdf) (40.95 KB, June 2, 2010)
    This fact sheet provides an overview of the 2010 revisions to the primary NAAQS for SO2, as well as revisions to the Monitoring Network and Data Reporting Requirements for SO2.
  • Revisions to the Primary National Ambient Air Quality Standard (NAAQS), Monitoring Network and Data Reporting Requirements for Sulfur Dioxide (SO2) (pdf) (197.06 KB, June 2010)
    This presentation provides an overview of the 2010 Primary NAAQS for SO2, as well as revisions to the Monitoring Network and Data Reporting Requirements for SO2.

Sulfur Dioxide (SO2) Pollution

  • Sulfur Dioxide Basics
  • Setting & Reviewing SO2 Standards
  • Primary SO2 Standard Regulatory Actions
  • Secondary NO2 and SO2 Standard Regulatory Actions
  • Implementing SO2 Standards
  • Primary SO2 Standard Implementation Actions
  • SIP Checklist Guide
  • SIP Training Presentations and Assistance
  • SO2 Measurement and SIP Data
  • Other Criteria Air Pollutants
Contact Us about Sulfur Dioxide (SO2) Pollution
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on December 20, 2024
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