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. A supplement to the second round of area designations was effective January 17, 2017. A third round of area designations was effective April 9, 2018. A fourth round of area designations was effective April 30, 2021.

1. All Designated Area Selections (Nonattainment and Maintenance)
   1. Area/State Information
   2. Area Design Values
   3. State/Area and Design Value Information
   4. State/County/Area Information
   5. State/Area/County List
   6. Area/State/County List


2. Nonattainment Area Selections
   1. Areas by Classification
   2. State/County/Area Information
   3. State/Area/County List
   4. Area/State/County List


3. Maintenance Area Selections (Redesignated from Nonattainment)
   1. Areas by Classification
   2. State/County/Area Information
   3. State/Area/County List
   4. Area/State/County List


4. Area Maps
   Map and GIS shapefile downloads are available from the Downloads page (see sidebar link)
    
   1. National Maps
      1. National Map of SO₂ (2010) Nonattainment Areas
   
   
   2. State Maps
      1. Individual State Maps with SO₂ (2010) Nonattainment Areas
      2. Individual State Maps with SO₂ (2010) Maintenance Areas
   
   
   3. Interactive Map with Current Status of SO₂ (2010) Nonattainment/Maintenance Areas


5. Other Information
   1. Summary Reports
      1. Nonattainment Area Summary Report
      2. Maintenance Area Summary Report
      3. Nonattainment Area Summary Report w/ History
   
   
   2. Designation and NAAQS Information Related to the 2010 SO₂ Standard


6. Federal Register Notices Related to SO₂ (2010) Areas
   1. Clean Data Determination/Attainment Determinations for Areas with Current Nonattainment Status
   2. Reconsideration/Correction of Area Designations
   3. All Federal Register Notices
      1. Notices Listed By Category
      2. Notices Listed By Area Name
      3. Notices Listed By State then Area
      4. Notices Listed By Date