Green Book Sulfur Dioxide (2010) Area Information
This section provides detailed information about designations and the nonattainment area status for the SO2 (2010) National Ambient Air Quality Standards (NAAQS). Original areas were designated October 4, 2013. A second round of area designations was effective September 12, 2016.
- All Designated Area Selections (Nonattainment and Maintenance)
- Nonattainment Area Selections
- Maintenance Area Selections (Redesignated from Nonattainment)
- Area Maps
Map and GIS shapefile downloads are available from the Downloads page (see sidebar link)
- Other Information
- Federal Register Notices Related to SO2 (2010) Areas
- All Federal Register Notices