Sulfur Dioxide (SO2) Primary Standards - Planning Documents from Current Review

Planning documents in NAAQS reviews generally include the Integrated Review Plan and Risk and Exposure Assessment planning documents.

• Review of the Primary National Ambient Air Quality Standard for Sulfur Oxides: Risk and Exposure Assessment Planning Document (PDF)(117 pp, 3 MB, February 2017, About PDF)
• Integrated Review Plan for the Primary National Ambient Air Quality Standard for Sulfur Dioxide, Final (PDF)(80 pp, 933 K, October 2014, About PDF)
• Integrated Review Plan for the Primary National Ambient Air Quality Standard for Sulfur Dioxide, External Review Draft (PDF)(77 pp, 783 K, March 2014, About PDF)

You may also be interested in other documents from the current sulfur dioxide primary NAAQS review.