Designation and NAAQS Information Related to SO2 (2010 Standard)
This page includes a link to a document from the U.S. Government Publishing Office (GPO) website.
- Revised SO2 (2010 Standard) Designation Notices
- Extension of Deadline for Promulgating Designations for the 2010 Primary Sulfur Dioxide NAAQS (August 3, 2012)
See 77 FR 46295 - Air Quality Designations for the 2010 Sulfur Dioxide (SO2) Primary NAAQS (August 5, 2013)
See 78 FR 47191 - Air Quality Designations for the 2010 Sulfur Dioxide (SO2) Primary NAAQS - Round 2 (July 12, 2016)
See 81 FR 45039 - Air Quality Designations for the 2010 Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standard - Supplement to Round 2 for Four Areas in Texas: Freestone and Anderson Counties, Milam County, Rusk and Panola Counties, and Titus County Air Quality Designations for the 2010 Sulfur Dioxide (SO2) Primary NAAQS - Round 2 (December 13, 2016)
See 81 FR 89870 - Air Quality Designations for the 2010 Sulfur Dioxide (SO2) Primary NAAQS - Round 3 (January 9, 2018)
See 83 FR 1098 - Reconsideration of the Area Designation for the 2010 1-Hour Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standard for Williamson County, Illinois (September 13, 2019)
See 84 FR 48286 - Air Quality Designations for the 2010 Primary Sulfur Dioxide (SO2) National Ambient Air Quality Standard - Round 4 (March 26, 2021)
See 86 FR 16055 - Air Quality Designations for the 2010 Primary Sulfur Dioxide (SO2) National Ambient Air Quality Standard - Round 4 - Supplemental Amendment (April 14, 2021)
See 86 FR 19576
- Extension of Deadline for Promulgating Designations for the 2010 Primary Sulfur Dioxide NAAQS (August 3, 2012)