Classifications of 8-Hour Ozone (1997) Nonattainment Areas
As of December 14, 2012
View Notes
|
Category/Classification (Attainment Date) |
|
| EXTREME (June 2024) |
| Los Angeles South Coast Air Basin, CA |
| San Joaquin Valley, CA |
| |
| SEVERE 15 (June 2019) |
| Houston-Galveston-Brazoria, TX |
| Los Angeles-San Bernardino Cos. (W Mojave Desert), CA |
| Riverside Co, (Coachella Valley), CA |
| Sacramento Metro, CA |
| |
| SERIOUS (June 2013) |
| Baltimore, MD |
| Dallas-Fort Worth, TX |
| Ventura Co, CA |
| |
| MODERATE (June 2010) |
| Amador and Calaveras Cos (Central Mtn), CA |
| Atlanta, GA |
| Boston-Lawrence-Worcester (E. MA), MA |
| Boston-Manchester-Portsmouth (SE), NH |
| Buffalo-Niagara Falls, NY |
| Charlotte-Gastonia-Rock Hill, NC-SC |
| Greater Connecticut, CT |
| Imperial Co, CA |
| Jamestown, NY |
| Jefferson Co, NY |
| Kern Co (Eastern Kern), CA |
| Mariposa and Tuolumne Cos (Southern Mtn), CA |
| Nevada Co. (Western Part), CA |
| New York-N. New Jersey-Long Island, NY-NJ-CT |
| Philadelphia-Wilmin-Atlantic City, PA-NJ-MD-DE |
| Pittsburgh-Beaver Valley, PA |
| Poughkeepsie, NY |
| Providence (All RI), RI |
| San Diego, CA |
| Sheboygan, WI |
| Springfield (Western MA), MA |
| St Louis, MO-IL (MO portion) |
| Washington, DC-MD-VA |
| |
| MARGINAL (June 2007) |
| Albany-Schenectady-Troy, NY |
| Chico, CA |
| Denver-Boulder-Greeley-Ft Collins-Loveland, CO |
| Essex Co (Whiteface Mtn), NY |
| Las Vegas, NV |
| Phoenix-Mesa, AZ |
| Rochester, NY |
| San Francisco Bay Area, CA |
| Sutter Co (Sutter Buttes), CA |
Notes:
Details about the designations and classifications of previous 1-hour ozone nonattainment and maintenance areas can be found here.
On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order) (PDF).
On May 14, 2012, the Former Subpart 1 nonattainment areas were classified under Subpart 2
(77 FR 28424
(PDF)), effective June 13, 2012.
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