Federal Register Notices Related to 8-Hour Ozone (1997) Designations and Classifications - NAAQS Revoked

Data is current as of November 30, 2025
Ordered by State, Area Name

Click on the 'FR' link to view the Federal Register Notice

The 1997 8-hour Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).

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ALABAMA
BIRMINGHAM, AL
01/25/2006		71 FR 4077	Proposed Approval	Redesignation to Maintenance
05/12/2006		71 FR 27631	Final Approval	Redesignation to Maintenance
ARIZONA
PHOENIX-MESA, AZ
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
03/26/2014		79 FR 16734	Proposed Approval	Redesignation to Maintenance
09/17/2014		79 FR 55645	Final Approval	Redesignation to Maintenance
ARKANSAS
MEMPHIS, TN-AR
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
10/16/2007		72 FR 58577	Proposed Approval	Change to a Higher Classification (Bump-Ups)
03/28/2008		73 FR 16547	Final Approval	Change to a Higher Classification (Bump-Ups)
03/28/2008		73 FR 16547	Final Approval	Failure to Attain by Attainment Date
01/14/2010		75 FR 2091	Proposed Approval	Redesignation to Maintenance
03/24/2010		75 FR 14077	Final Approval	Redesignation to Maintenance
CALIFORNIA
AMADOR AND CALAVERAS COS. (CENTRAL MOUNTAIN COS.), CA
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
09/14/2012		77 FR 56797	Proposed Approval	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56775	Direct Final	Clean Data Determination/Attainment Determination
11/07/2012		77 FR 66715	Withdrawal	Clean Data Determination/Attainment Determination
12/03/2012		77 FR 71551	Final Approval	Clean Data Determination/Attainment Determination
CHICO, CA
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
09/14/2012		77 FR 56797	Proposed Approval	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56775	Direct Final	Clean Data Determination/Attainment Determination
11/07/2012		77 FR 66715	Withdrawal	Clean Data Determination/Attainment Determination
12/03/2012		77 FR 71551	Final Approval	Clean Data Determination/Attainment Determination
IMPERIAL COUNTY, CA
11/23/2007		72 FR 65682	Proposed Approval	Change to a Higher Classification (Bump-Ups)
02/13/2008		73 FR 8209	Final Approval	Change to a Higher Classification (Bump-Ups)
09/23/2009		74 FR 48495	Proposed Approval	Clean Data Determination/Attainment Determination
12/03/2009		74 FR 63309	Final Approval	Clean Data Determination/Attainment Determination
KERN COUNTY (EASTERN KERN), CA
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
09/14/2012		77 FR 56797	Proposed Approval	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56775	Direct Final	Clean Data Determination/Attainment Determination
11/07/2012		77 FR 66715	Withdrawal	Clean Data Determination/Attainment Determination
12/03/2012		77 FR 71551	Final Approval	Clean Data Determination/Attainment Determination
LOS ANGELES AND SAN BERNARDINO COUNTIES (WESTERN MOJAVE DESERT), CA
05/08/2012		77 FR 26950	Final Approval	Change to a Higher Classification (Bump-Ups)
LOS ANGELES-SOUTH COAST AIR BASIN, CA
08/27/2009		74 FR 43654	Proposed Approval	Change to a Higher Classification (Bump-Ups)
05/05/2010		75 FR 24409	Final Approval	Change to a Higher Classification (Bump-Ups)
01/02/2013		78 FR 51	Proposed Approval	Area Split
01/02/2013		78 FR 51	Proposed Approval	Correction/Clarification
09/23/2013		78 FR 58189	Final Approval	Area Split
09/23/2013		78 FR 58189	Final Approval	Correction/Clarification
04/03/2015		80 FR 18120	Final Approval	Boundary Change
08/15/2024		89 FR 66291	Proposed Approval	Failure to Attain by Attainment Date
MARIPOSA AND TUOLUMNE COS. (SOUTHERN MOUNTAIN COUNTIES), CA
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
09/14/2012		77 FR 56797	Proposed Approval	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56797	Proposed Approval	Attainment Date Extension
09/14/2012		77 FR 56775	Direct Final	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56775	Direct Final	Attainment Date Extension
11/07/2012		77 FR 66715	Withdrawal	Clean Data Determination/Attainment Determination
11/07/2012		77 FR 66715	Withdrawal	Attainment Date Extension
12/03/2012		77 FR 71551	Final Approval	Clean Data Determination/Attainment Determination
12/03/2012		77 FR 71551	Final Approval	Attainment Date Extension
MORONGO BAND OF MISSION INDIANS, CA
08/27/2009		74 FR 43654	Proposed Approval	Change to a Higher Classification (Bump-Ups)
08/27/2009		74 FR 43654	Proposed Approval	Correction/Clarification
01/02/2013		78 FR 51	Proposed Approval	Area Split
09/23/2013		78 FR 58189	Final Approval	Area Split
09/23/2013		78 FR 58189	Final Approval	Correction/Clarification
09/23/2013		78 FR 58266	Withdrawal	Change to a Higher Classification (Bump-Ups)
NEVADA COUNTY (WESTERN PART), CA
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
09/14/2012		77 FR 56797	Proposed Approval	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56797	Proposed Approval	Attainment Date Extension
09/14/2012		77 FR 56775	Direct Final	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56775	Direct Final	Attainment Date Extension
11/07/2012		77 FR 66715	Withdrawal	Clean Data Determination/Attainment Determination
11/07/2012		77 FR 66715	Withdrawal	Attainment Date Extension
12/03/2012		77 FR 71551	Final Approval	Clean Data Determination/Attainment Determination
12/03/2012		77 FR 71551	Final Approval	Attainment Date Extension
PECHANGA BAND OF LUISENO MISSION INDIANS OF THE PECHANGA RESERVATION, CA
08/27/2009		74 FR 43654	Proposed Approval	Change to a Higher Classification (Bump-Ups)
01/06/2015		80 FR 436	Proposed Approval	Area Split
01/06/2015		80 FR 436	Proposed Approval	Redesignation to Maintenance
04/03/2015		80 FR 18120	Final Approval	Area Split
04/03/2015		80 FR 18120	Final Approval	Redesignation to Maintenance
04/03/2015		80 FR 18184	Withdrawal	Change to a Higher Classification (Bump-Ups)
RIVERSIDE COUNTY (COACHELLA VALLEY), CA
08/27/2009		74 FR 43654	Proposed Approval	Change to a Higher Classification (Bump-Ups)
05/05/2010		75 FR 24409	Final Approval	Change to a Higher Classification (Bump-Ups)
07/10/2019		84 FR 32841	Final Approval	Change to a Higher Classification (Bump-Ups)
03/17/2025		90 FR 12239	Proposed Approval	Attainment Date Extension
09/05/2025		90 FR 42844	Final Approval	Attainment Date Extension
SACRAMENTO METRO, CA
08/27/2009		74 FR 43654	Proposed Approval	Change to a Higher Classification (Bump-Ups)
05/05/2010		75 FR 24409	Final Approval	Change to a Higher Classification (Bump-Ups)
SAN DIEGO, CA
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
03/25/2013		78 FR 17902	Proposed Approval	Redesignation to Maintenance
06/04/2013		78 FR 33230	Final Approval	Redesignation to Maintenance
04/03/2015		80 FR 18120	Final Approval	Boundary Change
SAN FRANCISCO BAY AREA, CA
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
SAN JOAQUIN VALLEY, CA
08/27/2009		74 FR 43654	Proposed Approval	Change to a Higher Classification (Bump-Ups)
05/05/2010		75 FR 24409	Final Approval	Change to a Higher Classification (Bump-Ups)
07/10/2025		90 FR 30607	Proposed Approval	Failure to Attain by Attainment Date
09/25/2025		90 FR 46065	Final Approval	Failure to Attain by Attainment Date
SUTTER COUNTY (PART) (SUTTER BUTTES), CA
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
09/14/2012		77 FR 56797	Proposed Approval	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56775	Direct Final	Clean Data Determination/Attainment Determination
11/07/2012		77 FR 66715	Withdrawal	Clean Data Determination/Attainment Determination
12/03/2012		77 FR 71551	Final Approval	Clean Data Determination/Attainment Determination
VENTURA COUNTY (PART), CA
05/20/2008		73 FR 29073	Final Approval	Change to a Higher Classification (Bump-Ups)
09/14/2012		77 FR 56797	Proposed Approval	Clean Data Determination/Attainment Determination
09/14/2012		77 FR 56775	Direct Final	Clean Data Determination/Attainment Determination
11/07/2012		77 FR 66715	Withdrawal	Clean Data Determination/Attainment Determination
12/03/2012		77 FR 71551	Final Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
COLORADO
DENVER-BOULDER-GREELEY-FT. COLLINS-LOVELAND, CO
06/08/2005		70 FR 33409	Proposed Approval	Extension of Deferral of Designation
08/29/2005		70 FR 50988	Final Approval	Extension of Deferral of Designation
08/09/2006		71 FR 45492	Proposed Approval	Extension of Deferral of Designation
11/29/2006		71 FR 69022	Final Approval	Extension of Deferral of Designation
03/01/2007		72 FR 9285	Proposed Approval	Extension of Deferral of Designation
06/28/2007		72 FR 35356	Final Approval	Extension of Deferral of Designation
09/21/2007		72 FR 53952	Final Approval	Extension of Deferral of Designation
02/06/2008		73 FR 6863	Proposed Approval	Designation to Nonattainment
04/02/2008		73 FR 17897	Final Approval	Designation to Nonattainment
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
CONNECTICUT
GREATER CONNECTICUT, CT
06/01/2010		75 FR 30310	Proposed Approval	Clean Data Determination/Attainment Determination
08/31/2010		75 FR 53219	Final Approval	Clean Data Determination/Attainment Determination
NEW YORK-N. NEW JERSEY-LONG ISLAND, NY-NJ-CT
01/25/2012		77 FR 3720	Proposed Approval	Clean Data Determination/Attainment Determination
06/18/2012		77 FR 36163	Final Approval	Clean Data Determination/Attainment Determination
08/09/2012		77 FR 47533	Final Approval	Correction/Clarification
05/15/2014		79 FR 27830	Proposed Approval	Clean Data Determination Rescission
05/04/2016		81 FR 26697	Final Approval	Clean Data Determination Rescission
DELAWARE
PHILADELPHIA-WILMINGTON-ATLANTIC CITY, PA-NJ-MD-DE
11/09/2010		75 FR 68736	Proposed Approval	Attainment Date Extension
01/21/2011		76 FR 3840	Final Approval	Attainment Date Extension
12/09/2011		76 FR 76929	Proposed Approval	Clean Data Determination/Attainment Determination
03/26/2012		77 FR 17341	Final Approval	Clean Data Determination/Attainment Determination
DISTRICT OF COLUMBIA
WASHINGTON, DC-MD-VA
09/20/2011		76 FR 58206	Proposed Approval	Clean Data Determination/Attainment Determination
02/28/2012		77 FR 11739	Final Approval	Clean Data Determination/Attainment Determination
GEORGIA
ATLANTA, GA
10/16/2007		72 FR 58572	Proposed Approval	Change to a Higher Classification (Bump-Ups)
03/06/2008		73 FR 12013	Final Approval	Change to a Higher Classification (Bump-Ups)
03/06/2008		73 FR 12013	Final Approval	Failure to Attain by Attainment Date
09/17/2010		75 FR 56943	Proposed Approval	Attainment Date Extension
11/30/2010		75 FR 73969	Final Approval	Attainment Date Extension
03/25/2011		76 FR 16718	Proposed Approval	Clean Data Determination/Attainment Determination
06/23/2011		76 FR 36873	Final Approval	Clean Data Determination/Attainment Determination
12/15/2011		76 FR 77950	Proposed Approval	Clean Data Determination/Attainment Determination
03/07/2012		77 FR 13491	Final Approval	Clean Data Determination/Attainment Determination
02/04/2013		78 FR 7705	Proposed Approval	Redesignation to Maintenance
12/02/2013		78 FR 72040	Final Approval	Redesignation to Maintenance
MACON, GA
10/13/2006		71 FR 60429	Final Approval	Boundary Change
08/02/2007		72 FR 42354	Proposed Approval	Redesignation to Maintenance
09/19/2007		72 FR 53432	Final Approval	Redesignation to Maintenance
MURRAY COUNTY (CHATTAHOOCHEE NAT FOREST), GA
10/13/2006		71 FR 60429	Final Approval	Correction/Clarification
08/29/2007		72 FR 49679	Proposed Approval	Redesignation to Maintenance
10/16/2007		72 FR 58538	Final Approval	Redesignation to Maintenance
ILLINOIS
CHICAGO-GARY-LAKE COUNTY, IL-IN
09/24/2009		74 FR 48703	Proposed Approval	Clean Data Determination/Attainment Determination
03/12/2010		75 FR 12088	Final Approval	Clean Data Determination/Attainment Determination
07/08/2011		76 FR 40262	Final Approval	Correction/Clarification
02/09/2012		77 FR 6743	Proposed Approval	Redesignation to Maintenance
08/13/2012		77 FR 48062	Final Approval	Redesignation to Maintenance
ST. LOUIS, MO-IL
02/28/2011		76 FR 10815	Proposed Approval	Clean Data Determination/Attainment Determination
06/09/2011		76 FR 33647	Final Approval	Clean Data Determination/Attainment Determination
12/22/2011		76 FR 79579	Proposed Approval	Redesignation to Maintenance
01/20/2012		77 FR 2943	Proposed Approval	Extension of Comment Period
02/02/2012		77 FR 5210	Proposed Approval	Clean Data Determination/Attainment Determination
04/30/2012		77 FR 25363	Final Approval	Clean Data Determination/Attainment Determination
06/12/2012		77 FR 34819	Final Approval	Redesignation to Maintenance
INDIANA
CHICAGO-GARY-LAKE COUNTY, IL-IN
05/31/2007		72 FR 30435	Proposed Approval	Redesignation to Maintenance
09/24/2009		74 FR 48703	Proposed Approval	Clean Data Determination/Attainment Determination
03/12/2010		75 FR 12090	Proposed Approval	Redesignation to Maintenance
03/12/2010		75 FR 12088	Final Approval	Clean Data Determination/Attainment Determination
05/11/2010		75 FR 26113	Final Approval	Redesignation to Maintenance
CINCINNATI-HAMILTON, OH-KY-IN
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
02/26/2010		75 FR 8871	Proposed Approval	Redesignation to Maintenance
05/11/2010		75 FR 26118	Final Approval	Redesignation to Maintenance
EVANSVILLE, IN
09/09/2005		70 FR 53605	Proposed Approval	Redesignation to Maintenance
12/29/2005		70 FR 77026	Final Approval	Redesignation to Maintenance
FORT WAYNE, IN
08/30/2006		71 FR 51546	Proposed Approval	Redesignation to Maintenance
08/30/2006		71 FR 51489	Direct Final	Redesignation to Maintenance
10/19/2006		71 FR 61686	Withdrawal	Redesignation to Maintenance
01/11/2007		72 FR 1292	Final Approval	Redesignation to Maintenance
GREENE COUNTY, IN
11/14/2005		70 FR 69130	Proposed Approval	Redesignation to Maintenance
11/14/2005		70 FR 69085	Direct Final	Redesignation to Maintenance
INDIANAPOLIS, IN
07/31/2007		72 FR 41658	Proposed Approval	Redesignation to Maintenance
10/19/2007		72 FR 59210	Final Approval	Redesignation to Maintenance
JACKSON COUNTY, IN
11/14/2005		70 FR 69130	Proposed Approval	Redesignation to Maintenance
11/14/2005		70 FR 69085	Direct Final	Redesignation to Maintenance
LA PORTE COUNTY, IN
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
04/18/2007		72 FR 19424	Proposed Approval	Redesignation to Maintenance
07/19/2007		72 FR 39574	Final Approval	Redesignation to Maintenance
08/08/2007		72 FR 44383	Final Approval	Correction/Clarification
LOUISVILLE, KY-IN
05/08/2007		72 FR 26057	Proposed Approval	Redesignation to Maintenance
07/19/2007		72 FR 39571	Final Approval	Redesignation to Maintenance
MUNCIE, IN
11/16/2005		70 FR 69488	Proposed Approval	Redesignation to Maintenance
11/16/2005		70 FR 69443	Direct Final	Redesignation to Maintenance
SOUTH BEND-ELKHART, IN
04/18/2007		72 FR 19413	Proposed Approval	Redesignation to Maintenance
07/19/2007		72 FR 39577	Final Approval	Redesignation to Maintenance
TERRE HAUTE, IN
11/23/2005		70 FR 70751	Proposed Approval	Redesignation to Maintenance
01/05/2006		71 FR 541	Final Approval	Redesignation to Maintenance
KENTUCKY
CINCINNATI-HAMILTON, OH-KY-IN
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/12/2010		75 FR 26685	Proposed Approval	Redesignation to Maintenance
08/05/2010		75 FR 47218	Final Approval	Redesignation to Maintenance
CLARKSVILLE-HOPKINSVILLE, TN-KY
09/22/2005		70 FR 55613	Proposed Approval	Redesignation to Maintenance
09/22/2005		70 FR 55550	Direct Final	Redesignation to Maintenance
10/21/2005		70 FR 61232	Withdrawal	Redesignation to Maintenance
01/25/2006		71 FR 4047	Final Approval	Redesignation to Maintenance
HUNTINGTON-ASHLAND, WV-KY
05/11/2007		72 FR 26759	Proposed Approval	Redesignation to Maintenance
08/03/2007		72 FR 43172	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
LOUISVILLE, KY-IN
04/27/2007		72 FR 20966	Proposed Approval	Redesignation to Maintenance
07/05/2007		72 FR 36601	Final Approval	Redesignation to Maintenance
08/24/2007		72 FR 48558	Final Approval	Technical Amendment
LOUISIANA
BATON ROUGE, LA
10/30/2007		72 FR 61315	Proposed Approval	Change to a Higher Classification (Bump-Ups)
03/21/2008		73 FR 15087	Final Approval	Change to a Higher Classification (Bump-Ups)
03/21/2008		73 FR 15087	Final Approval	Failure to Attain by Attainment Date
06/25/2010		75 FR 36316	Proposed Approval	Clean Data Determination/Attainment Determination
09/09/2010		75 FR 54778	Final Approval	Clean Data Determination/Attainment Determination
08/30/2011		76 FR 53853	Proposed Approval	Redesignation to Maintenance
11/30/2011		76 FR 74000	Final Approval	Redesignation to Maintenance
MAINE
HANCOCK, KNOX, LINCOLN AND WALDO COUNTIES (CENTRAL MAINE COAST), ME
10/17/2006		71 FR 60937	Proposed Approval	Redesignation to Maintenance
12/11/2006		71 FR 71489	Final Approval	Redesignation to Maintenance
PORTLAND, ME
10/17/2006		71 FR 60937	Proposed Approval	Redesignation to Maintenance
12/11/2006		71 FR 71489	Final Approval	Redesignation to Maintenance
MARYLAND
BALTIMORE, MD
07/23/2010		75 FR 43114	Proposed Approval	Attainment Date Extension
07/23/2010		75 FR 43069	Direct Final	Attainment Date Extension
09/08/2010		75 FR 54497	Withdrawal	Attainment Date Extension
03/11/2011		76 FR 13289	Final Approval	Attainment Date Extension
09/01/2011		76 FR 54412	Proposed Approval	Change to a Higher Classification (Bump-Ups)
09/01/2011		76 FR 54412	Proposed Approval	Failure to Attain by Attainment Date
02/01/2012		77 FR 4901	Final Approval	Change to a Higher Classification (Bump-Ups)
02/01/2012		77 FR 4901	Final Approval	Failure to Attain by Attainment Date
03/25/2015		80 FR 15711	Proposed Approval	Clean Data Determination/Attainment Determination
05/26/2015		80 FR 29970	Final Approval	Clean Data Determination/Attainment Determination
KENT AND QUEEN ANNE'S COUNTIES, MD
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
10/10/2006		71 FR 59414	Proposed Approval	Redesignation to Maintenance
12/22/2006		71 FR 76920	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
PHILADELPHIA-WILMINGTON-ATLANTIC CITY, PA-NJ-MD-DE
11/09/2010		75 FR 68736	Proposed Approval	Attainment Date Extension
01/21/2011		76 FR 3840	Final Approval	Attainment Date Extension
12/09/2011		76 FR 76929	Proposed Approval	Clean Data Determination/Attainment Determination
03/26/2012		77 FR 17341	Final Approval	Clean Data Determination/Attainment Determination
WASHINGTON, DC-MD-VA
09/20/2011		76 FR 58206	Proposed Approval	Clean Data Determination/Attainment Determination
02/28/2012		77 FR 11739	Final Approval	Clean Data Determination/Attainment Determination
MASSACHUSETTS
BOSTON-LAWRENCE-WORCESTER (E. MASS), MA
03/13/2012		77 FR 14712	Proposed Approval	Clean Data Determination/Attainment Determination
05/29/2012		77 FR 31496	Final Approval	Clean Data Determination/Attainment Determination
SPRINGFIELD (W. MASS), MA
01/23/2012		77 FR 3220	Proposed Approval	Clean Data Determination/Attainment Determination
06/19/2012		77 FR 36404	Final Approval	Clean Data Determination/Attainment Determination
MICHIGAN
ALLEGAN COUNTY, MI
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
07/20/2010		75 FR 42018	Proposed Approval	Redesignation to Maintenance
09/24/2010		75 FR 58312	Final Approval	Redesignation to Maintenance
BENTON HARBOR, MI
01/08/2007		72 FR 699	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
BENZIE COUNTY, MI
12/07/2006		71 FR 70915	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
CASS COUNTY, MI
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
01/08/2007		72 FR 699	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
DETROIT-ANN ARBOR, MI
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
04/23/2009		74 FR 18479	Proposed Approval	Redesignation to Maintenance
06/29/2009		74 FR 30950	Final Approval	Redesignation to Maintenance
FLINT, MI
01/08/2007		72 FR 699	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
GRAND RAPIDS, MI
12/07/2006		71 FR 70915	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
HURON COUNTY, MI
12/07/2006		71 FR 70915	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
KALAMAZOO-BATTLE CREEK, MI
12/07/2006		71 FR 70915	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
LANSING-EAST LANSING, MI
12/07/2006		71 FR 70915	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
MASON COUNTY, MI
12/07/2006		71 FR 70915	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
MUSKEGON, MI
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
01/08/2007		72 FR 699	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27425	Final Approval	Redesignation to Maintenance
MISSOURI
ST. LOUIS, MO-IL
02/28/2011		76 FR 10815	Proposed Approval	Clean Data Determination/Attainment Determination
06/09/2011		76 FR 33647	Final Approval	Clean Data Determination/Attainment Determination
02/02/2012		77 FR 5210	Proposed Approval	Clean Data Determination/Attainment Determination
04/30/2012		77 FR 25363	Final Approval	Clean Data Determination/Attainment Determination
12/31/2014		79 FR 78755	Proposed Approval	Redesignation to Maintenance
02/20/2015		80 FR 9207	Final Approval	Redesignation to Maintenance
NEVADA
LAS VEGAS, NV
06/18/2004		69 FR 34076	Final Approval	Extension of Deferral of Designation
09/17/2004		69 FR 55956	Final Approval	Boundary Change
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
03/29/2011		76 FR 17373	Proposed Approval	Clean Data Determination/Attainment Determination
03/29/2011		76 FR 17343	Direct Final	Clean Data Determination/Attainment Determination
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
11/13/2012		77 FR 67600	Proposed Approval	Redesignation to Maintenance
01/08/2013		78 FR 1149	Final Approval	Redesignation to Maintenance
NEW HAMPSHIRE
BOSTON-MANCHESTER-PORTSMOUTH (SE), NH
02/07/2008		73 FR 7234	Proposed Approval	Clean Data Determination/Attainment Determination
03/18/2008		73 FR 14387	Final Approval	Clean Data Determination/Attainment Determination
12/06/2010		75 FR 75656	Proposed Approval	Clean Data Determination/Attainment Determination
03/18/2011		76 FR 14805	Final Approval	Clean Data Determination/Attainment Determination
10/25/2012		77 FR 65151	Proposed Approval	Redesignation to Maintenance
01/31/2013		78 FR 6741	Final Approval	Redesignation to Maintenance
NEW JERSEY
NEW YORK-N. NEW JERSEY-LONG ISLAND, NY-NJ-CT
01/25/2012		77 FR 3720	Proposed Approval	Clean Data Determination/Attainment Determination
06/18/2012		77 FR 36163	Final Approval	Clean Data Determination/Attainment Determination
08/09/2012		77 FR 47533	Final Approval	Correction/Clarification
05/15/2014		79 FR 27830	Proposed Approval	Clean Data Determination Rescission
05/04/2016		81 FR 26697	Final Approval	Clean Data Determination Rescission
PHILADELPHIA-WILMINGTON-ATLANTIC CITY, PA-NJ-MD-DE
11/09/2010		75 FR 68733	Proposed Approval	Attainment Date Extension
01/21/2011		76 FR 3838	Final Approval	Attainment Date Extension
12/09/2011		76 FR 76929	Proposed Approval	Clean Data Determination/Attainment Determination
03/26/2012		77 FR 17341	Final Approval	Clean Data Determination/Attainment Determination
NEW YORK
ALBANY-SCHENECTADY-TROY, NY
02/14/2008		73 FR 8637	Proposed Approval	Clean Data Determination/Attainment Determination
03/25/2008		73 FR 15672	Final Approval	Clean Data Determination/Attainment Determination
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
BUFFALO-NIAGARA FALLS, NY
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
09/23/2009		74 FR 48498	Proposed Approval	Clean Data Determination/Attainment Determination
12/07/2009		74 FR 63993	Final Approval	Clean Data Determination/Attainment Determination
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
ESSEX COUNTY (WHITEFACE MTN.), NY
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
09/23/2009		74 FR 48498	Proposed Approval	Clean Data Determination/Attainment Determination
12/07/2009		74 FR 63993	Final Approval	Clean Data Determination/Attainment Determination
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
JAMESTOWN, NY
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
09/23/2009		74 FR 48498	Proposed Approval	Clean Data Determination/Attainment Determination
12/07/2009		74 FR 63993	Final Approval	Clean Data Determination/Attainment Determination
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
JEFFERSON COUNTY, NY
02/14/2008		73 FR 8637	Proposed Approval	Clean Data Determination/Attainment Determination
03/25/2008		73 FR 15672	Final Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
NEW YORK-N. NEW JERSEY-LONG ISLAND, NY-NJ-CT
01/25/2012		77 FR 3720	Proposed Approval	Clean Data Determination/Attainment Determination
06/18/2012		77 FR 36163	Final Approval	Clean Data Determination/Attainment Determination
08/09/2012		77 FR 47533	Final Approval	Correction/Clarification
05/15/2014		79 FR 27830	Proposed Approval	Clean Data Determination Rescission
05/04/2016		81 FR 26697	Final Approval	Clean Data Determination Rescission
POUGHKEEPSIE, NY
09/23/2009		74 FR 48498	Proposed Approval	Clean Data Determination/Attainment Determination
12/07/2009		74 FR 63993	Final Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
ROCHESTER, NY
02/14/2008		73 FR 8637	Proposed Approval	Clean Data Determination/Attainment Determination
03/25/2008		73 FR 15672	Final Approval	Clean Data Determination/Attainment Determination
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
NORTH CAROLINA
CHARLOTTE-GASTONIA-ROCK HILL, NC-SC
08/04/2010		75 FR 46881	Proposed Approval	Attainment Date Extension
04/12/2011		76 FR 20293	Proposed Approval	Clean Data Determination/Attainment Determination
05/31/2011		76 FR 31245	Final Approval	Attainment Date Extension
11/15/2011		76 FR 70656	Final Approval	Clean Data Determination/Attainment Determination
12/29/2011		76 FR 81901	Proposed Approval	Clean Data Determination/Attainment Determination
03/07/2012		77 FR 13493	Final Approval	Clean Data Determination/Attainment Determination
07/26/2013		78 FR 45152	Proposed Approval	Redesignation to Maintenance
12/02/2013		78 FR 72036	Final Approval	Redesignation to Maintenance
HAYWOOD AND SWAIN COUNTIES (GREAT SMOKY NP), NC
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
10/16/2009		74 FR 53198	Proposed Approval	Redesignation to Maintenance
12/07/2009		74 FR 63995	Final Approval	Redesignation to Maintenance
RALEIGH-DURHAM-CHAPEL HILL, NC
10/03/2007		72 FR 56312	Proposed Approval	Redesignation to Maintenance
12/26/2007		72 FR 72948	Final Approval	Redesignation to Maintenance
ROCKY MOUNT, NC
11/06/2006		71 FR 64906	Proposed Approval	Redesignation to Maintenance
11/06/2006		71 FR 64891	Direct Final	Redesignation to Maintenance
OHIO
CANTON-MASSILLON, OH
12/27/2006		71 FR 77678	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27647	Final Approval	Redesignation to Maintenance
CINCINNATI-HAMILTON, OH-KY-IN
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
02/26/2010		75 FR 8871	Proposed Approval	Redesignation to Maintenance
05/11/2010		75 FR 26118	Final Approval	Redesignation to Maintenance
CLEVELAND-AKRON-LORAIN, OH
06/12/2009		74 FR 27957	Proposed Approval	Redesignation to Maintenance
09/15/2009		74 FR 47414	Final Approval	Redesignation to Maintenance
COLUMBUS, OH
06/12/2007		72 FR 32257	Proposed Approval	Redesignation to Maintenance
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
06/12/2009		74 FR 27973	Proposed Approval	Redesignation to Maintenance
09/15/2009		74 FR 47404	Final Approval	Redesignation to Maintenance
DAYTON-SPRINGFIELD, OH
06/20/2007		72 FR 33937	Proposed Approval	Redesignation to Maintenance
08/13/2007		72 FR 45169	Final Approval	Redesignation to Maintenance
LIMA, OH
12/27/2006		71 FR 77678	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27647	Final Approval	Redesignation to Maintenance
PARKERSBURG-MARIETTA, WV-OH
01/17/2007		72 FR 1956	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27651	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
STEUBENVILLE-WEIRTON, OH-WV
01/08/2007		72 FR 711	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27639	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
TOLEDO, OH
06/12/2007		72 FR 32246	Proposed Approval	Redesignation to Maintenance
08/09/2007		72 FR 44784	Final Approval	Redesignation to Maintenance
WHEELING, WV-OH
12/27/2006		71 FR 77666	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/16/2007		72 FR 27643	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
YOUNGSTOWN-WARREN-SHARON, OH-PA
04/18/2007		72 FR 19435	Proposed Approval	Redesignation to Maintenance
06/12/2007		72 FR 32190	Final Approval	Redesignation to Maintenance
PENNSYLVANIA
ALLENTOWN-BETHLEHEM-EASTON, PA
01/07/2008		73 FR 1162	Proposed Approval	Redesignation to Maintenance
03/04/2008		73 FR 11557	Final Approval	Redesignation to Maintenance
ALTOONA, PA
06/07/2007		72 FR 31495	Proposed Approval	Redesignation to Maintenance
08/01/2007		72 FR 41906	Final Approval	Redesignation to Maintenance
CLEARFIELD AND INDIANA COUNTIES, PA
07/23/2008		73 FR 42731	Proposed Approval	Redesignation to Maintenance
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
03/19/2009		74 FR 11674	Final Approval	Redesignation to Maintenance
ERIE, PA
07/25/2007		72 FR 40776	Proposed Approval	Redesignation to Maintenance
10/09/2007		72 FR 57207	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
01/14/2008		73 FR 2162	Final Approval	Correction/Clarification
03/04/2008		73 FR 11560	Final Approval	Correction/Clarification
FRANKLIN COUNTY, PA
05/30/2007		72 FR 29914	Proposed Approval	Redesignation to Maintenance
07/25/2007		72 FR 40746	Final Approval	Redesignation to Maintenance
09/25/2007		72 FR 54361	Final Approval	Correction/Clarification
GREENE COUNTY, PA
07/16/2008		73 FR 40813	Proposed Approval	Redesignation to Maintenance
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
03/19/2009		74 FR 11671	Final Approval	Redesignation to Maintenance
HARRISBURG-LEBANON-CARLISLE, PA
06/01/2007		72 FR 30521	Proposed Approval	Redesignation to Maintenance
07/25/2007		72 FR 40749	Final Approval	Redesignation to Maintenance
JOHNSTOWN, PA
06/01/2007		72 FR 30509	Proposed Approval	Redesignation to Maintenance
08/01/2007		72 FR 41903	Final Approval	Redesignation to Maintenance
03/04/2008		73 FR 11560	Final Approval	Correction/Clarification
LANCASTER, PA
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
05/15/2007		72 FR 27265	Proposed Approval	Redesignation to Maintenance
07/06/2007		72 FR 36889	Final Approval	Redesignation to Maintenance
PHILADELPHIA-WILMINGTON-ATLANTIC CITY, PA-NJ-MD-DE
11/09/2010		75 FR 68736	Proposed Approval	Attainment Date Extension
01/21/2011		76 FR 3840	Final Approval	Attainment Date Extension
12/09/2011		76 FR 76929	Proposed Approval	Clean Data Determination/Attainment Determination
03/26/2012		77 FR 17341	Final Approval	Clean Data Determination/Attainment Determination
PITTSBURGH-BEAVER VALLEY, PA
07/11/2007		72 FR 37683	Proposed Approval	Redesignation to Maintenance
11/18/2008		73 FR 67827	Withdrawal	Redesignation to Maintenance
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
02/07/2011		76 FR 6590	Proposed Approval	Clean Data Determination/Attainment Determination
05/31/2011		76 FR 31237	Final Approval	Clean Data Determination/Attainment Determination
05/14/2012		77 FR 28424	Final Approval	Change from Subpart 1 to Subpart 2
12/10/2012		77 FR 73387	Proposed Approval	Clean Data Determination/Attainment Determination
04/04/2013		78 FR 20244	Final Approval	Clean Data Determination/Attainment Determination
READING, PA
05/30/2007		72 FR 29901	Proposed Approval	Redesignation to Maintenance
08/24/2007		72 FR 48559	Final Approval	Redesignation to Maintenance
01/14/2008		73 FR 2162	Final Approval	Correction/Clarification
SCRANTON-WILKES-BARRE, PA
09/25/2007		72 FR 54390	Proposed Approval	Redesignation to Maintenance
11/19/2007		72 FR 64948	Final Approval	Redesignation to Maintenance
STATE COLLEGE, PA
09/11/2007		72 FR 51747	Proposed Approval	Redesignation to Maintenance
11/14/2007		72 FR 63990	Final Approval	Redesignation to Maintenance
TIOGA COUNTY, PA
05/08/2007		72 FR 26046	Proposed Approval	Redesignation to Maintenance
07/06/2007		72 FR 36892	Final Approval	Redesignation to Maintenance
YORK, PA
10/24/2007		72 FR 60296	Proposed Approval	Redesignation to Maintenance
01/14/2008		73 FR 2163	Final Approval	Redesignation to Maintenance
YOUNGSTOWN-WARREN-SHARON, OH-PA
07/27/2007		72 FR 41246	Proposed Approval	Redesignation to Maintenance
10/19/2007		72 FR 59213	Final Approval	Redesignation to Maintenance
01/14/2008		73 FR 2162	Final Approval	Correction/Clarification
03/04/2008		73 FR 11560	Final Approval	Correction/Clarification
RHODE ISLAND
PROVIDENCE (ALL OF RI), RI
02/25/2010		75 FR 8571	Proposed Approval	Clean Data Determination/Attainment Determination
06/03/2010		75 FR 31288	Final Approval	Clean Data Determination/Attainment Determination
07/28/2010		75 FR 44179	Proposed Approval	Clean Data Determination/Attainment Determination
10/21/2010		75 FR 64949	Final Approval	Clean Data Determination/Attainment Determination
SOUTH CAROLINA
CHARLOTTE-GASTONIA-ROCK HILL, NC-SC
08/04/2010		75 FR 46881	Proposed Approval	Attainment Date Extension
04/12/2011		76 FR 20293	Proposed Approval	Clean Data Determination/Attainment Determination
05/31/2011		76 FR 31245	Final Approval	Attainment Date Extension
11/15/2011		76 FR 70656	Final Approval	Clean Data Determination/Attainment Determination
12/29/2011		76 FR 81901	Proposed Approval	Clean Data Determination/Attainment Determination
03/07/2012		77 FR 13493	Final Approval	Clean Data Determination/Attainment Determination
11/15/2012		77 FR 68087	Proposed Approval	Redesignation to Maintenance
12/26/2012		77 FR 75862	Final Approval	Redesignation to Maintenance
TENNESSEE
CLARKSVILLE-HOPKINSVILLE, TN-KY
09/22/2005		70 FR 55613	Proposed Approval	Redesignation to Maintenance
09/22/2005		70 FR 55559	Direct Final	Redesignation to Maintenance
08/11/2006		71 FR 46105	Final Approval	Correction/Clarification
KNOXVILLE, TN
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
08/03/2010		75 FR 45568	Proposed Approval	Clean Data Determination/Attainment Determination
10/07/2010		75 FR 62026	Proposed Approval	Redesignation to Maintenance
10/12/2010		75 FR 62470	Final Approval	Clean Data Determination/Attainment Determination
03/08/2011		76 FR 12587	Final Approval	Redesignation to Maintenance
MEMPHIS, TN-AR
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
10/16/2007		72 FR 58577	Proposed Approval	Change to a Higher Classification (Bump-Ups)
03/28/2008		73 FR 16547	Final Approval	Change to a Higher Classification (Bump-Ups)
03/28/2008		73 FR 16547	Final Approval	Failure to Attain by Attainment Date
11/19/2009		74 FR 59943	Proposed Approval	Redesignation to Maintenance
01/04/2010		75 FR 56	Final Approval	Redesignation to Maintenance
TEXAS
BEAUMONT-PORT ARTHUR, TX
10/30/2007		72 FR 61310	Proposed Approval	Change to a Higher Classification (Bump-Ups)
03/18/2008		73 FR 14391	Final Approval	Change to a Higher Classification (Bump-Ups)
03/18/2008		73 FR 14391	Final Approval	Failure to Attain by Attainment Date
05/17/2010		75 FR 27514	Proposed Approval	Redesignation to Maintenance
10/20/2010		75 FR 64675	Final Approval	Redesignation to Maintenance
DALLAS-FORT WORTH, TX
08/09/2010		75 FR 47746	Proposed Approval	Change to a Higher Classification (Bump-Ups)
08/09/2010		75 FR 47746	Proposed Approval	Failure to Attain by Attainment Date
12/20/2010		75 FR 79302	Final Approval	Change to a Higher Classification (Bump-Ups)
12/20/2010		75 FR 79302	Final Approval	Failure to Attain by Attainment Date
02/17/2015		80 FR 8274	Proposed Approval	Change to a Higher Classification (Bump-Ups)
02/17/2015		80 FR 8274	Proposed Approval	Failure to Attain by Attainment Date
04/28/2015		80 FR 23487	Proposed Approval	Clean Data Determination/Attainment Determination
09/01/2015		80 FR 52630	Final Approval	Clean Data Determination/Attainment Determination
05/25/2016		81 FR 33161	Proposed Approval	Actions on Revoked NAAQS
11/08/2016		81 FR 78688	Final Approval	Actions on Revoked NAAQS
06/24/2019		84 FR 29471	Proposed Approval	Actions on Revoked NAAQS
04/06/2020		85 FR 19096	Final Approval	Actions on Revoked NAAQS
HOUSTON-GALVESTON-BRAZORIA, TX
12/31/2007		72 FR 74252	Proposed Approval	Change to a Higher Classification (Bump-Ups)
10/01/2008		73 FR 56983	Final Approval	Change to a Higher Classification (Bump-Ups)
08/17/2015		80 FR 49187	Proposed Approval	Clean Data Determination/Attainment Determination
12/30/2015		80 FR 81466	Final Approval	Clean Data Determination/Attainment Determination
05/25/2016		81 FR 33166	Proposed Approval	Actions on Revoked NAAQS
11/08/2016		81 FR 78691	Final Approval	Actions on Revoked NAAQS
02/14/2020		85 FR 8411	Final Approval	Actions on Revoked NAAQS
VIRGINIA
FREDERICKSBURG, VA
09/12/2005		70 FR 53746	Proposed Approval	Redesignation to Maintenance
09/30/2005		70 FR 57238	Withdrawal	Redesignation to Maintenance
11/02/2005		70 FR 66316	Proposed Approval	Redesignation to Maintenance
12/23/2005		70 FR 76165	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
MADISON AND PAGE COUNTIES (SHENANDOAH NP), VA
11/04/2005		70 FR 67109	Proposed Approval	Redesignation to Maintenance
01/03/2006		71 FR 24	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
NORFOLK-VIRGINIA BEACH-NEWPORT NEWS (HAMPTON ROADS), VA
04/13/2007		72 FR 18602	Proposed Approval	Redesignation to Maintenance
06/01/2007		72 FR 30490	Final Approval	Redesignation to Maintenance
07/06/2007		72 FR 36895	Final Approval	Correction/Clarification
RICHMOND-PETERSBURG, VA
09/22/2004		69 FR 56697	Final Approval	Change to a Lower Classification
04/12/2007		72 FR 18434	Proposed Approval	Redesignation to Maintenance
05/10/2007		72 FR 26581	Proposed Approval	Correction/Clarification
06/01/2007		72 FR 30485	Final Approval	Redesignation to Maintenance
WASHINGTON, DC-MD-VA
09/20/2011		76 FR 58206	Proposed Approval	Clean Data Determination/Attainment Determination
02/28/2012		77 FR 11739	Final Approval	Clean Data Determination/Attainment Determination
WEST VIRGINIA
CHARLESTON, WV
05/04/2006		71 FR 26299	Proposed Approval	Redesignation to Maintenance
07/11/2006		71 FR 39001	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
HUNTINGTON-ASHLAND, WV-KY
07/13/2006		71 FR 39618	Proposed Approval	Redesignation to Maintenance
09/15/2006		71 FR 54421	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
PARKERSBURG-MARIETTA, WV-OH
01/12/2007		72 FR 1474	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/08/2007		72 FR 25967	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
STEUBENVILLE-WEIRTON, OH-WV
10/02/2006		71 FR 57905	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/14/2007		72 FR 27060	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
WHEELING, WV-OH
10/02/2006		71 FR 57894	Proposed Approval	Redesignation to Maintenance
03/22/2007		72 FR 13452	Proposed Approval	Redesignation to Maintenance
05/15/2007		72 FR 27247	Final Approval	Redesignation to Maintenance
12/05/2007		72 FR 68515	Final Approval	Correction/Clarification
WISCONSIN
DOOR COUNTY, WI
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
04/27/2010		75 FR 22047	Proposed Approval	Redesignation to Maintenance
07/12/2010		75 FR 39635	Final Approval	Redesignation to Maintenance
INLAND SHEBOYGAN COUNTY, WI
12/15/2010		75 FR 78197	Proposed Approval	Clean Data Determination/Attainment Determination
12/15/2010		75 FR 78164	Direct Final	Clean Data Determination/Attainment Determination
01/28/2011		76 FR 5078	Withdrawal	Clean Data Determination/Attainment Determination
03/01/2011		76 FR 11080	Final Approval	Clean Data Determination/Attainment Determination
02/09/2012		77 FR 6727	Proposed Approval	Redesignation to Maintenance
02/15/2019		84 FR 4422	Proposed Approval	Area Split
07/15/2019		84 FR 33699	Final Approval	Area Split
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination
KEWAUNEE COUNTY, WI
12/11/2007		72 FR 70255	Proposed Approval	Redesignation to Maintenance
05/21/2008		73 FR 29436	Final Approval	Redesignation to Maintenance
MANITOWOC COUNTY, WI
01/16/2009		74 FR 2936	Proposed Approval	Change from Subpart 1 to Subpart 2
04/27/2010		75 FR 22047	Proposed Approval	Redesignation to Maintenance
07/12/2010		75 FR 39635	Final Approval	Redesignation to Maintenance
MILWAUKEE-RACINE, WI
12/15/2010		75 FR 78197	Proposed Approval	Clean Data Determination/Attainment Determination
12/15/2010		75 FR 78164	Direct Final	Clean Data Determination/Attainment Determination
01/28/2011		76 FR 5078	Withdrawal	Clean Data Determination/Attainment Determination
03/01/2011		76 FR 11080	Final Approval	Clean Data Determination/Attainment Determination
02/09/2012		77 FR 6727	Proposed Approval	Redesignation to Maintenance
07/31/2012		77 FR 45252	Final Approval	Redesignation to Maintenance
SHORELINE SHEBOYGAN COUNTY, WI
12/15/2010		75 FR 78197	Proposed Approval	Clean Data Determination/Attainment Determination
12/15/2010		75 FR 78164	Direct Final	Clean Data Determination/Attainment Determination
01/28/2011		76 FR 5078	Withdrawal	Clean Data Determination/Attainment Determination
03/01/2011		76 FR 11080	Final Approval	Clean Data Determination/Attainment Determination
02/09/2012		77 FR 6727	Proposed Approval	Redesignation to Maintenance
02/15/2019		84 FR 4422	Proposed Approval	Area Split
07/15/2019		84 FR 33699	Final Approval	Area Split
10/09/2020		85 FR 64089	Proposed Approval	Clean Data Determination/Attainment Determination
10/09/2020		85 FR 64046	Direct Final	Clean Data Determination/Attainment Determination
12/09/2020		85 FR 79129	Withdrawal	Clean Data Determination/Attainment Determination
07/29/2021		86 FR 40784	Final Approval	Clean Data Determination/Attainment Determination