Sulfur Dioxide (SO2) Pollution

Technical Assistance Documents for Implementing the 2010 Sulfur Dioxide Standard

EPA is making available two updated draft documents that provide technical assistance for states implementing the 2010 health-based, sulfur dioxide (SO₂) standard. These documents provide technical advice on the use of modeling and monitoring to determine if an area meets the 2010 SO₂ air quality standard.

For more information see Sulfur Dioxide State Implementation Plan (SIP) Checklist Guide.

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Sulfur Dioxide (SO2) National Ambient Air Quality Standards Designations Modeling Technical Assistance Document (August 2016 DRAFT) (PDF)(72 pp, 1 MB)
Source-Oriented Sulfur Dioxide (SO2) Monitoring Technical Assistance Document (February 2016 Draft) (PDF)(30 pp, 3 MB)