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Reviewing National Ambient Air Quality Standards (NAAQS)
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Sulfur Dioxide (SOx) Standards - Risk and Exposure Assessments from Current Review

The quantitative risk and exposure assessments inform the EPA's review of the NAAQS.

  • Health Risk and Exposure Assessment for Sulfur Dioxide, Final Report (PDF)(502 pp, 75 M, August 2014)
    • Executive Summary (PDF)(20 pp, 1.3 M)
    • Chapter 4 Appendices (PDF)(354 pp, 11 M)
    • Chapter 5 Appendices (PDF)(314 pp, 6 M)
    • Chapter 6 Appendices (PDF)(94 pp, 972 K)
    • Chapter 7, 8, 9 Appendices (PDF)(314 pp, 6 M)
  • Welfare Risk and Exposure Assessment for Ozone, Final Report (PDF)(308 pp, 631 K, August 2014)
    • Executive Summary (PDF)(18 pp, 375 K)
    • Appendices (PDF)(450 pp, 14 M)
  • Memoranda Associated with the Second Draft Health Risk and Exposure Assessments, March - May 2014
  • Health Risk and Exposure Assessment for Ozone, Second External Review Draft (PDF)(490 pp, 1297 K, February 2014)
    • Executive Summary (PDF)(17 pp, 258 K)
    • Chapter 4 Appendices (PDF)(309 pp, 48 M)
    • Chapter 5 Appendices (PDF)(307 pp, 7 M)
    • Chapter 6 Appendices (PDF)(77 pp, 1.7 M)
    • Chapter 7, 8, 9 Appendices (PDF)(157 pp, 11 M)
  • Welfare Risk and Exposure Assessment for Ozone, Second External Review Draft (PDF)(305 pp, 668 K, February 2014)
    • Executive Summary (PDF)(17 pp, 1 M)
    • Appendices (PDF)(452 pp, 15 M)
  • Health Risk and Exposure Assessment for Ozone, First External Review Draft (PDF)(474 pp, 6.2 M, July 2012)
  • Welfare Risk and Exposure Assessment for Ozone, First External Review Draft (PDF)(167 pp, 20 M, July 2012)

You may also be interested in other documents from the current ozone NAAQS review.

  • Reviewing NAAQS - Scientific and Technical Information Home
  • Carbon Monoxide Standards
  • Lead Standards
  • Nitrogen Dioxide Primary Standards
  • Nitrogen Dioxide Secondary Standards
  • Ozone Standards
  • Particulate Matter Standards
  • Sulfur Dioxide Primary Standards
  • Sulfur Dioxide Secondary Standards
Contact Us to ask a question, provide feedback, or report a problem.
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Last updated on February 18, 2021