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Adjustments to Original 8-Hour Ozone (2008) Nonattainment Area Baseline
Adjustments to Original 8-Hour Ozone (2008) Nonattainment Area Baseline
Data is current as of June 30, 2021| AREA SPLIT |
| July 15, 2019, Effective July 15, 2019 ( 84 FR 33699 ) |
| Inland Sheboygan County, WI - WISCONSIN |
| July 15, 2019, Effective July 15, 2019 ( 84 FR 33699 ) |
| Shoreline Sheboygan County, WI - WISCONSIN |
| CHANGE TO A HIGHER CLASSIFICATION (BUMP-UPS) |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Atlanta, GA - GEORGIA |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Chicago-Naperville, IL-IN-WI - ILLINOIS |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Chicago-Naperville, IL-IN-WI - INDIANA |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Chicago-Naperville, IL-IN-WI - WISCONSIN |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - COLORADO |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Greater Connecticut, CT - CONNECTICUT |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Imperial County, CA - CALIFORNIA |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Kern Co (Eastern Kern), CA - CALIFORNIA |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Mariposa County, CA - CALIFORNIA |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Nevada Co. (Western part), CA - CALIFORNIA |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| New York-N. New Jersey-Long Island, NY-NJ-CT - CONNECTICUT |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| New York-N. New Jersey-Long Island, NY-NJ-CT - NEW JERSEY |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| New York-N. New Jersey-Long Island, NY-NJ-CT - NEW YORK |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| Phoenix-Mesa, AZ - ARIZONA |
| Reclassify from Marginal to Moderate |
| May 04, 2016, Effective June 03, 2016 ( 81 FR 26697 ) |
| San Diego County, CA - CALIFORNIA |
| Reclassify from Marginal to Moderate |
| December 14, 2016, Effective December 14, 2016 ( 81 FR 90207 ) |
| Houston-Galveston-Brazoria, TX - TEXAS |
| Reclassify from Marginal to Moderate |
| December 19, 2016, Effective December 19, 2016 ( 81 FR 91841 ) |
| Inland Sheboygan County, WI - WISCONSIN |
| Reclassify from Marginal to Moderate |
| December 19, 2016, Effective December 19, 2016 ( 81 FR 91841 ) |
| Shoreline Sheboygan County, WI - WISCONSIN |
| Reclassify from Marginal to Moderate |
| July 05, 2018, Effective August 06, 2018 ( 83 FR 31334 ) |
| Kern Co (Eastern Kern), CA - CALIFORNIA |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| Chicago-Naperville, IL-IN-WI - ILLINOIS |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| Chicago-Naperville, IL-IN-WI - INDIANA |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| Chicago-Naperville, IL-IN-WI - WISCONSIN |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| Dallas-Fort Worth, TX - TEXAS |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| Greater Connecticut, CT - CONNECTICUT |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| Houston-Galveston-Brazoria, TX - TEXAS |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| Nevada Co. (Western part), CA - CALIFORNIA |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| New York-N. New Jersey-Long Island, NY-NJ-CT - CONNECTICUT |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| New York-N. New Jersey-Long Island, NY-NJ-CT - NEW JERSEY |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| New York-N. New Jersey-Long Island, NY-NJ-CT - NEW YORK |
| Reclassify from Moderate to Serious |
| August 23, 2019, Effective September 23, 2019 ( 84 FR 44238 ) |
| San Diego County, CA - CALIFORNIA |
| Reclassify from Moderate to Serious |
| December 26, 2019, Effective January 27, 2020 ( 84 FR 70897 ) |
| Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - COLORADO |
| Reclassify from Moderate to Serious |