8-Hour Ozone (1997) Federal Register Notice Classification Changes - NAAQS Revoked

As of September 22, 2016
Previous Ordered by Classification
The 1997 8-hour Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).
Click on the 'FR Page' 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 Page 43654
Final Approval	05/05/2010	75 FR Page 24409	Effective:06/04/2010

San Joaquin Valley, CA
Reclassify from Serious to Extreme
Proposed Approval	08/27/2009	74 FR Page 43654
Final Approval	05/05/2010	75 FR Page 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 Page 43654
Withdrawal	09/23/2013	78 FR Page 58266

Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation
Reclassify from Severe-17 to Extreme
Proposed Approval	08/27/2009	74 FR Page 43654
Withdrawal	04/03/2015	80 FR Page 18184

SEVERE 15

Houston-Galveston-Brazoria, TX
Reclassify from Moderate to Severe-15
Proposed Approval	12/31/2007	72 FR Page 74252
Final Approval	10/01/2008	73 FR Page 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 Page 26950	Effective:06/07/2012

Riverside Co. (Coachella Valley), CA
Reclassify from Serious to Severe-15
Proposed Approval	08/27/2009	74 FR Page 43654
Final Approval	05/05/2010	75 FR Page 24409	Effective:06/04/2010

Sacramento Metro, CA
Reclassify from Serious to Severe-15
Proposed Approval	08/27/2009	74 FR Page 43654
Final Approval	05/05/2010	75 FR Page 24409	Effective:06/04/2010

SERIOUS

Baltimore, MD
Reclassify from Moderate to Serious
Proposed Approval	09/01/2011	76 FR Page 54412
Final Approval	02/01/2012	77 FR Page 4901	Effective:03/02/2012

Dallas-Fort Worth, TX
Reclassify from Moderate to Serious
Proposed Approval	08/09/2010	75 FR Page 47746
Final Approval	12/20/2010	75 FR Page 79302	Effective:01/19/2011
Reclassify from Serious to Severe
Proposed Approval	02/17/2015	80 FR Page 8274

Ventura Co, CA
Reclassify from Moderate to Serious
Final Approval	05/20/2008	73 FR Page 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 Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Atlanta, GA
Reclassify from Marginal to Moderate
Proposed Approval	10/16/2007	72 FR Page 58572
Final Approval	03/06/2008	73 FR Page 12013	Effective:04/07/2008

Baton Rouge, LA
Reclassify from Marginal to Moderate
Proposed Approval	10/30/2007	72 FR Page 61315
Final Approval	03/21/2008	73 FR Page 15087	Effective:04/21/2008

Beaumont-Port Arthur, TX
Reclassify from Marginal to Moderate
Proposed Approval	10/30/2007	72 FR Page 61310
Final Approval	03/18/2008	73 FR Page 14391	Effective:04/17/2008

Buffalo-Niagara Falls, NY
Change from Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Imperial Co, CA
Reclassify from Marginal to Moderate
Proposed Approval	11/23/2007	72 FR Page 65682
Final Approval	02/13/2008	73 FR Page 8209	Effective:03/14/2008

Jamestown, NY
Change from Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Kern Co (Eastern Kern), CA
Change from Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 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 Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Memphis, TN-AR
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004
Reclassify from Marginal to Moderate
Proposed Approval	10/16/2007	72 FR Page 58577
Final Approval	03/28/2008	73 FR Page 16547	Effective:04/28/2008

Nevada Co. (Western part), CA
Change from Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Pittsburgh-Beaver Valley, PA
Change from Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

San Diego, CA
Change from Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

MARGINAL

Albany-Schenectady-Troy, NY
Change from Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Cass Co, MI
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004

Chico, CA
Change from Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 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 Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Detroit-Ann Arbor, MI
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004

Essex Co (Whiteface Mtn), NY
Change from Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Kent and Queen Anne's Cos, MD
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004

La Porte Co., IN
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004

Lancaster, PA
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004

Las Vegas, NV
Change from Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Muskegon, MI
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004

Phoenix-Mesa, AZ
Change from Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Richmond-Petersburg, VA
Reclassify from Moderate to Marginal
Final Approval	09/22/2004	69 FR Page 56697	Effective:11/22/2004

Rochester, NY
Change from Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

Sutter Co (Sutter Buttes), CA
Change from Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936
Final Approval	05/14/2012	77 FR Page 28424	Effective:06/13/2012

FORMER SUBPART 1

Allegan Co, MI
From Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936

Cincinnati-Hamilton, OH-KY-IN
From Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936

Clearfield and Indiana Cos, PA
From Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936

Columbus, OH
From Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936

Door Co, WI
From Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936

Greene Co, PA
From Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936

Haywood and Swain Cos (Great Smoky NP), NC
From Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936

Knoxville, TN
From Former Subpart 1 to Moderate
Proposed Approval	01/16/2009	74 FR Page 2936

Manitowoc Co, WI
From Former Subpart 1 to Marginal
Proposed Approval	01/16/2009	74 FR Page 2936

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8-Hour Ozone (1997) Federal Register Notice Classification Changes - NAAQS Revoked

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