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8-Hour Ozone (1997) Federal Register Notice Classification Changes - NAAQS Revoked
8-Hour Ozone (1997) Federal Register Notice Classification Changes - NAAQS Revoked
Data is current as of March 31, 2021Previous Ordered by Classification
The 1997 8-hour Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).
Click on the 'FR' link to view the Federal Register Notice
EXTREME | |||
Los Angeles-South Coast Air Basin, CA | |||
Reclassify from Severe-17 to Extreme | |||
Proposed Approval | 08/27/2009 | 74 FR 43654 | |
Final Approval | 05/05/2010 | 75 FR 24409 | Effective: 06/04/2010 |
Riverside Co. (Coachella Valley), CA | |||
Reclassify from Serious to Severe-15 | |||
Proposed Approval | 08/27/2009 | 74 FR 43654 | |
Final Approval | 05/05/2010 | 75 FR 24409 | Effective: 06/04/2010 |
Reclassify from Severe 15 to Extreme | |||
Final Approval | 07/10/2019 | 84 FR 32841 | Effective: 07/10/2019 |
San Joaquin Valley, CA | |||
Reclassify from Serious to Extreme | |||
Proposed Approval | 08/27/2009 | 74 FR 43654 | |
Final Approval | 05/05/2010 | 75 FR 24409 | Effective: 06/04/2010 |
SEVERE 17 | |||
Morongo Band of Mission Indians | |||
Reclassify from Severe-17 to Extreme | |||
Proposed Approval | 08/27/2009 | 74 FR 43654 | |
Withdrawal | 09/23/2013 | 78 FR 58266 | Effective: 09/23/2013 |
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation | |||
Reclassify from Severe-17 to Extreme | |||
Proposed Approval | 08/27/2009 | 74 FR 43654 | |
Withdrawal | 04/03/2015 | 80 FR 18184 | Effective: 04/03/2015 |
SEVERE 15 | |||
Houston-Galveston-Brazoria, TX | |||
Reclassify from Moderate to Severe-15 | |||
Proposed Approval | 12/31/2007 | 72 FR 74252 | |
Final Approval | 10/01/2008 | 73 FR 56983 | Effective: 10/31/2008 |
Los Angeles-San Bernardino Cos. (W Mojave Desert), CA | |||
Reclassify from Moderate to Severe-15 | |||
Final Approval | 05/08/2012 | 77 FR 26950 | Effective: 06/07/2012 |
Sacramento Metro, CA | |||
Reclassify from Serious to Severe-15 | |||
Proposed Approval | 08/27/2009 | 74 FR 43654 | |
Final Approval | 05/05/2010 | 75 FR 24409 | Effective: 06/04/2010 |
SERIOUS | |||
Baltimore, MD | |||
Reclassify from Moderate to Serious | |||
Proposed Approval | 09/01/2011 | 76 FR 54412 | |
Final Approval | 02/01/2012 | 77 FR 4901 | Effective: 03/02/2012 |
Dallas-Fort Worth, TX | |||
Reclassify from Moderate to Serious | |||
Proposed Approval | 08/09/2010 | 75 FR 47746 | |
Final Approval | 12/20/2010 | 75 FR 79302 | Effective: 01/19/2011 |
Reclassify from Serious to Severe | |||
Proposed Approval | 02/17/2015 | 80 FR 8274 | |
Ventura Co, CA | |||
Reclassify from Moderate to Serious | |||
Final Approval | 05/20/2008 | 73 FR 29073 | Effective: 06/19/2008 |
MODERATE | |||
Amador and Calaveras Cos. (Central Mountain Cos.), CA | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Atlanta, GA | |||
Reclassify from Marginal to Moderate | |||
Proposed Approval | 10/16/2007 | 72 FR 58572 | |
Final Approval | 03/06/2008 | 73 FR 12013 | Effective: 04/07/2008 |
Baton Rouge, LA | |||
Reclassify from Marginal to Moderate | |||
Proposed Approval | 10/30/2007 | 72 FR 61315 | |
Final Approval | 03/21/2008 | 73 FR 15087 | Effective: 04/21/2008 |
Beaumont-Port Arthur, TX | |||
Reclassify from Marginal to Moderate | |||
Proposed Approval | 10/30/2007 | 72 FR 61310 | |
Final Approval | 03/18/2008 | 73 FR 14391 | Effective: 04/17/2008 |
Buffalo-Niagara Falls, NY | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Imperial Co, CA | |||
Reclassify from Marginal to Moderate | |||
Proposed Approval | 11/23/2007 | 72 FR 65682 | |
Final Approval | 02/13/2008 | 73 FR 8209 | Effective: 03/14/2008 |
Jamestown, NY | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Kern Co (Eastern Kern), CA | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Mariposa and Tuolumne Cos (Southern Mtn), CA | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Memphis, TN-AR | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
Reclassify from Marginal to Moderate | |||
Proposed Approval | 10/16/2007 | 72 FR 58577 | |
Final Approval | 03/28/2008 | 73 FR 16547 | Effective: 04/28/2008 |
Nevada Co. (Western part), CA | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Pittsburgh-Beaver Valley, PA | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
San Diego, CA | |||
Change from Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
MARGINAL | |||
Albany-Schenectady-Troy, NY | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Cass Co, MI | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
Chico, CA | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Detroit-Ann Arbor, MI | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
Essex Co (Whiteface Mtn), NY | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Kent and Queen Anne's Cos, MD | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
La Porte Co., IN | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
Lancaster, PA | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
Las Vegas, NV | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Muskegon, MI | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
Phoenix-Mesa, AZ | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Richmond-Petersburg, VA | |||
Reclassify from Moderate to Marginal | |||
Final Approval | 09/22/2004 | 69 FR 56697 | Effective: 11/22/2004 |
Rochester, NY | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
Sutter Co (Sutter Buttes), CA | |||
Change from Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Final Approval | 05/14/2012 | 77 FR 28424 | Effective: 06/13/2012 |
FORMER SUBPART 1 | |||
Allegan Co, MI | |||
From Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Cincinnati-Hamilton, OH-KY-IN | |||
From Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Clearfield and Indiana Cos, PA | |||
From Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Columbus, OH | |||
From Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Door Co, WI | |||
From Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Greene Co, PA | |||
From Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Haywood and Swain Cos (Great Smoky NP), NC | |||
From Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Knoxville, TN | |||
From Former Subpart 1 to Moderate | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 | |
Manitowoc Co, WI | |||
From Former Subpart 1 to Marginal | |||
Proposed Approval | 01/16/2009 | 74 FR 2936 |
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