1-Hour Ozone (1979) Federal Register Notice Classification Changes - NAAQS Revoked

Data is current as of March 31, 2024
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EXTREME
San Joaquin Valley, CA
Reclassify from Serious to Severe 2005
Proposed Approval	06/19/2000	65 FR 37926
Proposed Approval	05/18/2001	66 FR 27616
Final Approval	11/08/2001	66 FR 56476	Effective: 12/10/2001
Reclassify from Severe 2005 to Extreme
Proposed Approval	02/23/2004	69 FR 8126
Final Approval	04/16/2004	69 FR 20550	Effective: 05/17/2004
SEVERE-15
Atlanta, GA
Reclassify from Serious to Severe
Proposed Approval	12/11/2001	66 FR 63972
Final Approval	09/26/2003	68 FR 55469	Effective: 01/01/2004
Baton Rouge, LA
Reclassify from Serious to Severe
Proposed Approval	05/09/2001	66 FR 23646
Final Approval	06/24/2002	67 FR 42687
Withdrawal	08/02/2002	67 FR 50391
Final Approval	04/24/2003	68 FR 20077	Effective: 06/23/2003
Sacramento Metro, CA
Reclassify from Serious to Severe 2005
Final Approval	04/25/1995	60 FR 20237	Effective: 06/01/1995
Washington, DC-MD-VA
Reclassify from Serious to Severe 2005
Proposed Approval	11/13/2002	67 FR 68805
Final Approval	01/24/2003	68 FR 3410	Effective: 03/25/2003
SERIOUS
Beaumont-Port Arthur, TX
Reclassified from Serious to Moderate
Direct Final	04/02/1996	61 FR 14496	Effective: 06/03/1996
Reclassify from Moderate to Serious
Proposed Approval	04/16/1999	64 FR 18864
Final Approval	03/30/2004	69 FR 16483	Effective: 04/29/2004
Dallas-Fort Worth, TX
Reclassify from Moderate to Serious
Proposed Approval	09/02/1997	62 FR 46238
Final Approval	02/18/1998	63 FR 8128	Effective: 03/20/1998
Phoenix, AZ
Reclassify from Moderate to Serious
Proposed Approval	09/02/1997	62 FR 46229
Final Approval	11/06/1997	62 FR 60001	Effective: 12/08/1997
San Diego, CA
Reclassified from Severe to Serious
Final Approval	01/19/1995	60 FR 3771	Effective: 02/21/1995
Santa Barbara-Santa Maria-Lompoc, CA
Reclassify from Moderate to Serious
Proposed Approval	09/02/1997	62 FR 46234
Final Approval	12/10/1997	62 FR 65025	Effective: 01/09/1998
St. Louis, MO-IL
Reclassify from Moderate to Serious
Proposed Approval	03/18/1999	64 FR 13384
Final Approval	03/19/2001	66 FR 15577
Withdrawal	04/03/2001	66 FR 17647
Final Approval	01/30/2003	68 FR 4835	Effective: 01/30/2003
MODERATE
Louisville, KY-IN
Reclassify from Moderate to Serious
Proposed Approval	05/21/1999	64 FR 27734
Muskegon, MI
Reclassified from Serious to Moderate
Final Approval	11/30/1992	57 FR 56762	Effective: 12/30/1992
Portland, ME
Reclassify from Moderate to Serious
Proposed Approval	09/17/2002	67 FR 58551
Poughkeepsie, NY
Reclassify from Marginal to Moderate
Proposed Approval	07/28/1994	59 FR 38000
Final Approval	10/06/1994	59 FR 50848	Effective: 11/07/1994
Sheboygan, WI
Reclassified from Serious to Moderate
Final Approval	11/30/1992	57 FR 56762	Effective: 12/30/1992
MARGINAL
Norfolk-Virginia Beach-Newport News (Hampton Roads), VA
Reclassify from Marginal to Moderate
Direct Final	01/17/1995	60 FR 3349	Effective: 03/20/1995
Withdrawal	03/13/1995	60 FR 13368	Effective: 03/13/1995
Pointe Coupee Parish, LA
Reclassify from Serious to Marginal
Proposed Approval	07/22/1996	61 FR 37875
Direct Final	07/22/1996	61 FR 37833	Effective: 09/20/1996
Final Approval	01/06/1997	62 FR 648	Effective: 12/20/1996
OTHER
San Francisco-Bay Area, CA
Change from no classification to Moderate
Proposed Approval	03/18/1999	64 FR 13383

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