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Federal Register Notices Related to 8-Hour Ozone (1997) Designations and Classifications - NAAQS Revoked
Federal Register Notices Related to 8-Hour Ozone (1997) Designations and Classifications - NAAQS Revoked
Data is current as of November 30, 2024Ordered Chronologically in Descending Order
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The 1997 8-hour Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).
Last Notice
| 08/15/2024 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 89 FR 66291 | Proposed Approval | Failure to Attain by Attainment Date |
| 07/29/2021 | Buffalo-Niagara Falls, NY | NEW YORK | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | Inland Sheboygan County, WI | WISCONSIN | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | Jamestown, NY | NEW YORK | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | Jefferson County, NY | NEW YORK | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | Poughkeepsie, NY | NEW YORK | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | San Francisco Bay Area, CA | CALIFORNIA | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | Shoreline Sheboygan County, WI | WISCONSIN | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 07/29/2021 | Ventura County (part), CA | CALIFORNIA | 86 FR 40784 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Buffalo-Niagara Falls, NY | NEW YORK | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Inland Sheboygan County, WI | WISCONSIN | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Jamestown, NY | NEW YORK | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Jefferson County, NY | NEW YORK | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Poughkeepsie, NY | NEW YORK | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | San Francisco Bay Area, CA | CALIFORNIA | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Shoreline Sheboygan County, WI | WISCONSIN | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 12/09/2020 | Ventura County (part), CA | CALIFORNIA | 85 FR 79129 | Withdrawal | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Buffalo-Niagara Falls, NY | NEW YORK | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Buffalo-Niagara Falls, NY | NEW YORK | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Inland Sheboygan County, WI | WISCONSIN | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Inland Sheboygan County, WI | WISCONSIN | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Jamestown, NY | NEW YORK | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Jamestown, NY | NEW YORK | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Jefferson County, NY | NEW YORK | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Jefferson County, NY | NEW YORK | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Poughkeepsie, NY | NEW YORK | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Poughkeepsie, NY | NEW YORK | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | San Francisco Bay Area, CA | CALIFORNIA | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | San Francisco Bay Area, CA | CALIFORNIA | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Shoreline Sheboygan County, WI | WISCONSIN | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Shoreline Sheboygan County, WI | WISCONSIN | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Ventura County (part), CA | CALIFORNIA | 85 FR 64089 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 10/09/2020 | Ventura County (part), CA | CALIFORNIA | 85 FR 64046 | Direct Final | Clean Data Determination/Attainment Determination |
| 04/06/2020 | Dallas-Fort Worth, TX | TEXAS | 85 FR 19096 | Final Approval | Actions on Revoked NAAQS |
| 02/14/2020 | Houston-Galveston-Brazoria, TX | TEXAS | 85 FR 8411 | Final Approval | Actions on Revoked NAAQS |
| 07/15/2019 | Inland Sheboygan County, WI | WISCONSIN | 84 FR 33699 | Final Approval | Area Split |
| 07/15/2019 | Shoreline Sheboygan County, WI | WISCONSIN | 84 FR 33699 | Final Approval | Area Split |
| 07/10/2019 | Riverside County (Coachella Valley), CA | CALIFORNIA | 84 FR 32841 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 06/24/2019 | Dallas-Fort Worth, TX | TEXAS | 84 FR 29471 | Proposed Approval | Actions on Revoked NAAQS |
| 02/15/2019 | Inland Sheboygan County, WI | WISCONSIN | 84 FR 4422 | Proposed Approval | Area Split |
| 02/15/2019 | Shoreline Sheboygan County, WI | WISCONSIN | 84 FR 4422 | Proposed Approval | Area Split |
| 11/08/2016 | Dallas-Fort Worth, TX | TEXAS | 81 FR 78688 | Final Approval | Actions on Revoked NAAQS |
| 11/08/2016 | Houston-Galveston-Brazoria, TX | TEXAS | 81 FR 78691 | Final Approval | Actions on Revoked NAAQS |
| 05/25/2016 | Dallas-Fort Worth, TX | TEXAS | 81 FR 33161 | Proposed Approval | Actions on Revoked NAAQS |
| 05/25/2016 | Houston-Galveston-Brazoria, TX | TEXAS | 81 FR 33166 | Proposed Approval | Actions on Revoked NAAQS |
| 05/04/2016 | New York-N. New Jersey-Long Island, NY-NJ-CT | CONNECTICUT | 81 FR 26697 | Final Approval | Clean Data Determination Rescission |
| 05/04/2016 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW JERSEY | 81 FR 26697 | Final Approval | Clean Data Determination Rescission |
| 05/04/2016 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW YORK | 81 FR 26697 | Final Approval | Clean Data Determination Rescission |
| 12/30/2015 | Houston-Galveston-Brazoria, TX | TEXAS | 80 FR 81466 | Final Approval | Clean Data Determination/Attainment Determination |
| 09/01/2015 | Dallas-Fort Worth, TX | TEXAS | 80 FR 52630 | Final Approval | Clean Data Determination/Attainment Determination |
| 08/17/2015 | Houston-Galveston-Brazoria, TX | TEXAS | 80 FR 49187 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 05/26/2015 | Baltimore, MD | MARYLAND | 80 FR 29970 | Final Approval | Clean Data Determination/Attainment Determination |
| 04/28/2015 | Dallas-Fort Worth, TX | TEXAS | 80 FR 23487 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 04/03/2015 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 80 FR 18120 | Final Approval | Boundary Change |
| 04/03/2015 | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | CALIFORNIA | 80 FR 18120 | Final Approval | Area Split |
| 04/03/2015 | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | CALIFORNIA | 80 FR 18120 | Final Approval | Redesignation to Maintenance |
| 04/03/2015 | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | CALIFORNIA | 80 FR 18184 | Withdrawal | Change to a Higher Classification (Bump-Ups) |
| 04/03/2015 | San Diego, CA | CALIFORNIA | 80 FR 18120 | Final Approval | Boundary Change |
| 03/25/2015 | Baltimore, MD | MARYLAND | 80 FR 15711 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/20/2015 | St. Louis, MO-IL | MISSOURI | 80 FR 9207 | Final Approval | Redesignation to Maintenance |
| 02/17/2015 | Dallas-Fort Worth, TX | TEXAS | 80 FR 8274 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 02/17/2015 | Dallas-Fort Worth, TX | TEXAS | 80 FR 8274 | Proposed Approval | Failure to Attain by Attainment Date |
| 01/06/2015 | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | CALIFORNIA | 80 FR 436 | Proposed Approval | Area Split |
| 01/06/2015 | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | CALIFORNIA | 80 FR 436 | Proposed Approval | Redesignation to Maintenance |
| 12/31/2014 | St. Louis, MO-IL | MISSOURI | 79 FR 78755 | Proposed Approval | Redesignation to Maintenance |
| 09/17/2014 | Phoenix-Mesa, AZ | ARIZONA | 79 FR 55645 | Final Approval | Redesignation to Maintenance |
| 05/15/2014 | New York-N. New Jersey-Long Island, NY-NJ-CT | CONNECTICUT | 79 FR 27830 | Proposed Approval | Clean Data Determination Rescission |
| 05/15/2014 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW JERSEY | 79 FR 27830 | Proposed Approval | Clean Data Determination Rescission |
| 05/15/2014 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW YORK | 79 FR 27830 | Proposed Approval | Clean Data Determination Rescission |
| 03/26/2014 | Phoenix-Mesa, AZ | ARIZONA | 79 FR 16734 | Proposed Approval | Redesignation to Maintenance |
| 12/02/2013 | Atlanta, GA | GEORGIA | 78 FR 72040 | Final Approval | Redesignation to Maintenance |
| 12/02/2013 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 78 FR 72036 | Final Approval | Redesignation to Maintenance |
| 09/23/2013 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 78 FR 58189 | Final Approval | Area Split |
| 09/23/2013 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 78 FR 58189 | Final Approval | Correction/Clarification |
| 09/23/2013 | Morongo Band of Mission Indians, CA | CALIFORNIA | 78 FR 58189 | Final Approval | Area Split |
| 09/23/2013 | Morongo Band of Mission Indians, CA | CALIFORNIA | 78 FR 58189 | Final Approval | Correction/Clarification |
| 09/23/2013 | Morongo Band of Mission Indians, CA | CALIFORNIA | 78 FR 58266 | Withdrawal | Change to a Higher Classification (Bump-Ups) |
| 07/26/2013 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 78 FR 45152 | Proposed Approval | Redesignation to Maintenance |
| 06/04/2013 | San Diego, CA | CALIFORNIA | 78 FR 33230 | Final Approval | Redesignation to Maintenance |
| 04/04/2013 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 78 FR 20244 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/25/2013 | San Diego, CA | CALIFORNIA | 78 FR 17902 | Proposed Approval | Redesignation to Maintenance |
| 02/04/2013 | Atlanta, GA | GEORGIA | 78 FR 7705 | Proposed Approval | Redesignation to Maintenance |
| 01/31/2013 | Boston-Manchester-Portsmouth (SE), NH | NEW HAMPSHIRE | 78 FR 6741 | Final Approval | Redesignation to Maintenance |
| 01/08/2013 | Las Vegas, NV | NEVADA | 78 FR 1149 | Final Approval | Redesignation to Maintenance |
| 01/02/2013 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 78 FR 51 | Proposed Approval | Area Split |
| 01/02/2013 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 78 FR 51 | Proposed Approval | Correction/Clarification |
| 01/02/2013 | Morongo Band of Mission Indians, CA | CALIFORNIA | 78 FR 51 | Proposed Approval | Area Split |
| 12/26/2012 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 77 FR 75862 | Final Approval | Redesignation to Maintenance |
| 12/10/2012 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 77 FR 73387 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/03/2012 | Amador and Calaveras Cos. (Central Mountain Cos.), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/03/2012 | Chico, CA | CALIFORNIA | 77 FR 71551 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/03/2012 | Kern County (Eastern Kern), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/03/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/03/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Attainment Date Extension |
| 12/03/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/03/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Attainment Date Extension |
| 12/03/2012 | Sutter County (part) (Sutter Buttes), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/03/2012 | Ventura County (part), CA | CALIFORNIA | 77 FR 71551 | Final Approval | Clean Data Determination/Attainment Determination |
| 11/15/2012 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 77 FR 68087 | Proposed Approval | Redesignation to Maintenance |
| 11/13/2012 | Las Vegas, NV | NEVADA | 77 FR 67600 | Proposed Approval | Redesignation to Maintenance |
| 11/07/2012 | Amador and Calaveras Cos. (Central Mountain Cos.), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Clean Data Determination/Attainment Determination |
| 11/07/2012 | Chico, CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Clean Data Determination/Attainment Determination |
| 11/07/2012 | Kern County (Eastern Kern), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Clean Data Determination/Attainment Determination |
| 11/07/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Clean Data Determination/Attainment Determination |
| 11/07/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Attainment Date Extension |
| 11/07/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Clean Data Determination/Attainment Determination |
| 11/07/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Attainment Date Extension |
| 11/07/2012 | Sutter County (part) (Sutter Buttes), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Clean Data Determination/Attainment Determination |
| 11/07/2012 | Ventura County (part), CA | CALIFORNIA | 77 FR 66715 | Withdrawal | Clean Data Determination/Attainment Determination |
| 10/25/2012 | Boston-Manchester-Portsmouth (SE), NH | NEW HAMPSHIRE | 77 FR 65151 | Proposed Approval | Redesignation to Maintenance |
| 09/14/2012 | Amador and Calaveras Cos. (Central Mountain Cos.), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Amador and Calaveras Cos. (Central Mountain Cos.), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Chico, CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Chico, CA | CALIFORNIA | 77 FR 56775 | Direct Final | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Kern County (Eastern Kern), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Kern County (Eastern Kern), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Attainment Date Extension |
| 09/14/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Attainment Date Extension |
| 09/14/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Attainment Date Extension |
| 09/14/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Attainment Date Extension |
| 09/14/2012 | Sutter County (part) (Sutter Buttes), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Sutter County (part) (Sutter Buttes), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Ventura County (part), CA | CALIFORNIA | 77 FR 56797 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/14/2012 | Ventura County (part), CA | CALIFORNIA | 77 FR 56775 | Direct Final | Clean Data Determination/Attainment Determination |
| 08/13/2012 | Chicago-Gary-Lake County, IL-IN | ILLINOIS | 77 FR 48062 | Final Approval | Redesignation to Maintenance |
| 08/09/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | CONNECTICUT | 77 FR 47533 | Final Approval | Correction/Clarification |
| 08/09/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW JERSEY | 77 FR 47533 | Final Approval | Correction/Clarification |
| 08/09/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW YORK | 77 FR 47533 | Final Approval | Correction/Clarification |
| 07/31/2012 | Milwaukee-Racine, WI | WISCONSIN | 77 FR 45252 | Final Approval | Redesignation to Maintenance |
| 06/19/2012 | Springfield (W. Mass), MA | MASSACHUSETTS | 77 FR 36404 | Final Approval | Clean Data Determination/Attainment Determination |
| 06/18/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | CONNECTICUT | 77 FR 36163 | Final Approval | Clean Data Determination/Attainment Determination |
| 06/18/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW JERSEY | 77 FR 36163 | Final Approval | Clean Data Determination/Attainment Determination |
| 06/18/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW YORK | 77 FR 36163 | Final Approval | Clean Data Determination/Attainment Determination |
| 06/12/2012 | St. Louis, MO-IL | ILLINOIS | 77 FR 34819 | Final Approval | Redesignation to Maintenance |
| 05/29/2012 | Boston-Lawrence-Worcester (E. Mass), MA | MASSACHUSETTS | 77 FR 31496 | Final Approval | Clean Data Determination/Attainment Determination |
| 05/14/2012 | Albany-Schenectady-Troy, NY | NEW YORK | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Amador and Calaveras Cos. (Central Mountain Cos.), CA | CALIFORNIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Buffalo-Niagara Falls, NY | NEW YORK | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Chico, CA | CALIFORNIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Essex County (Whiteface Mtn.), NY | NEW YORK | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Jamestown, NY | NEW YORK | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Kern County (Eastern Kern), CA | CALIFORNIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Las Vegas, NV | NEVADA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Nevada County (Western part), CA | CALIFORNIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Phoenix-Mesa, AZ | ARIZONA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Rochester, NY | NEW YORK | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | San Diego, CA | CALIFORNIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/14/2012 | Sutter County (part) (Sutter Buttes), CA | CALIFORNIA | 77 FR 28424 | Final Approval | Change from Subpart 1 to Subpart 2 |
| 05/08/2012 | Los Angeles and San Bernardino Counties (Western Mojave Desert), CA | CALIFORNIA | 77 FR 26950 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 04/30/2012 | St. Louis, MO-IL | ILLINOIS | 77 FR 25363 | Final Approval | Clean Data Determination/Attainment Determination |
| 04/30/2012 | St. Louis, MO-IL | MISSOURI | 77 FR 25363 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/26/2012 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | DELAWARE | 77 FR 17341 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/26/2012 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | MARYLAND | 77 FR 17341 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/26/2012 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | NEW JERSEY | 77 FR 17341 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/26/2012 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | PENNSYLVANIA | 77 FR 17341 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/13/2012 | Boston-Lawrence-Worcester (E. Mass), MA | MASSACHUSETTS | 77 FR 14712 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 03/07/2012 | Atlanta, GA | GEORGIA | 77 FR 13491 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/07/2012 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 77 FR 13493 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/07/2012 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 77 FR 13493 | Final Approval | Clean Data Determination/Attainment Determination |
| 02/28/2012 | Washington, DC-MD-VA | DISTRICT OF COL | 77 FR 11739 | Final Approval | Clean Data Determination/Attainment Determination |
| 02/28/2012 | Washington, DC-MD-VA | MARYLAND | 77 FR 11739 | Final Approval | Clean Data Determination/Attainment Determination |
| 02/28/2012 | Washington, DC-MD-VA | VIRGINIA | 77 FR 11739 | Final Approval | Clean Data Determination/Attainment Determination |
| 02/09/2012 | Chicago-Gary-Lake County, IL-IN | ILLINOIS | 77 FR 6743 | Proposed Approval | Redesignation to Maintenance |
| 02/09/2012 | Inland Sheboygan County, WI | WISCONSIN | 77 FR 6727 | Proposed Approval | Redesignation to Maintenance |
| 02/09/2012 | Milwaukee-Racine, WI | WISCONSIN | 77 FR 6727 | Proposed Approval | Redesignation to Maintenance |
| 02/09/2012 | Shoreline Sheboygan County, WI | WISCONSIN | 77 FR 6727 | Proposed Approval | Redesignation to Maintenance |
| 02/02/2012 | St. Louis, MO-IL | ILLINOIS | 77 FR 5210 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/02/2012 | St. Louis, MO-IL | MISSOURI | 77 FR 5210 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/01/2012 | Baltimore, MD | MARYLAND | 77 FR 4901 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 02/01/2012 | Baltimore, MD | MARYLAND | 77 FR 4901 | Final Approval | Failure to Attain by Attainment Date |
| 01/25/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | CONNECTICUT | 77 FR 3720 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 01/25/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW JERSEY | 77 FR 3720 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 01/25/2012 | New York-N. New Jersey-Long Island, NY-NJ-CT | NEW YORK | 77 FR 3720 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 01/23/2012 | Springfield (W. Mass), MA | MASSACHUSETTS | 77 FR 3220 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 01/20/2012 | St. Louis, MO-IL | ILLINOIS | 77 FR 2943 | Proposed Approval | Extension of Comment Period |
| 12/29/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 76 FR 81901 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/29/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 76 FR 81901 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/22/2011 | St. Louis, MO-IL | ILLINOIS | 76 FR 79579 | Proposed Approval | Redesignation to Maintenance |
| 12/15/2011 | Atlanta, GA | GEORGIA | 76 FR 77950 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/09/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | DELAWARE | 76 FR 76929 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/09/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | MARYLAND | 76 FR 76929 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/09/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | NEW JERSEY | 76 FR 76929 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/09/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | PENNSYLVANIA | 76 FR 76929 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 11/30/2011 | Baton Rouge, LA | LOUISIANA | 76 FR 74000 | Final Approval | Redesignation to Maintenance |
| 11/15/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 76 FR 70656 | Final Approval | Clean Data Determination/Attainment Determination |
| 11/15/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 76 FR 70656 | Final Approval | Clean Data Determination/Attainment Determination |
| 09/20/2011 | Washington, DC-MD-VA | DISTRICT OF COL | 76 FR 58206 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/20/2011 | Washington, DC-MD-VA | MARYLAND | 76 FR 58206 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/20/2011 | Washington, DC-MD-VA | VIRGINIA | 76 FR 58206 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/01/2011 | Baltimore, MD | MARYLAND | 76 FR 54412 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 09/01/2011 | Baltimore, MD | MARYLAND | 76 FR 54412 | Proposed Approval | Failure to Attain by Attainment Date |
| 08/30/2011 | Baton Rouge, LA | LOUISIANA | 76 FR 53853 | Proposed Approval | Redesignation to Maintenance |
| 07/08/2011 | Chicago-Gary-Lake County, IL-IN | ILLINOIS | 76 FR 40262 | Final Approval | Correction/Clarification |
| 06/23/2011 | Atlanta, GA | GEORGIA | 76 FR 36873 | Final Approval | Clean Data Determination/Attainment Determination |
| 06/09/2011 | St. Louis, MO-IL | ILLINOIS | 76 FR 33647 | Final Approval | Clean Data Determination/Attainment Determination |
| 06/09/2011 | St. Louis, MO-IL | MISSOURI | 76 FR 33647 | Final Approval | Clean Data Determination/Attainment Determination |
| 05/31/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 76 FR 31245 | Final Approval | Attainment Date Extension |
| 05/31/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 76 FR 31245 | Final Approval | Attainment Date Extension |
| 05/31/2011 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 76 FR 31237 | Final Approval | Clean Data Determination/Attainment Determination |
| 04/12/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 76 FR 20293 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 04/12/2011 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 76 FR 20293 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 03/29/2011 | Las Vegas, NV | NEVADA | 76 FR 17373 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 03/29/2011 | Las Vegas, NV | NEVADA | 76 FR 17343 | Direct Final | Clean Data Determination/Attainment Determination |
| 03/25/2011 | Atlanta, GA | GEORGIA | 76 FR 16718 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 03/18/2011 | Boston-Manchester-Portsmouth (SE), NH | NEW HAMPSHIRE | 76 FR 14805 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/11/2011 | Baltimore, MD | MARYLAND | 76 FR 13289 | Final Approval | Attainment Date Extension |
| 03/08/2011 | Knoxville, TN | TENNESSEE | 76 FR 12587 | Final Approval | Redesignation to Maintenance |
| 03/01/2011 | Inland Sheboygan County, WI | WISCONSIN | 76 FR 11080 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/01/2011 | Milwaukee-Racine, WI | WISCONSIN | 76 FR 11080 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/01/2011 | Shoreline Sheboygan County, WI | WISCONSIN | 76 FR 11080 | Final Approval | Clean Data Determination/Attainment Determination |
| 02/28/2011 | St. Louis, MO-IL | ILLINOIS | 76 FR 10815 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/28/2011 | St. Louis, MO-IL | MISSOURI | 76 FR 10815 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/07/2011 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 76 FR 6590 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 01/28/2011 | Inland Sheboygan County, WI | WISCONSIN | 76 FR 5078 | Withdrawal | Clean Data Determination/Attainment Determination |
| 01/28/2011 | Milwaukee-Racine, WI | WISCONSIN | 76 FR 5078 | Withdrawal | Clean Data Determination/Attainment Determination |
| 01/28/2011 | Shoreline Sheboygan County, WI | WISCONSIN | 76 FR 5078 | Withdrawal | Clean Data Determination/Attainment Determination |
| 01/21/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | DELAWARE | 76 FR 3840 | Final Approval | Attainment Date Extension |
| 01/21/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | MARYLAND | 76 FR 3840 | Final Approval | Attainment Date Extension |
| 01/21/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | NEW JERSEY | 76 FR 3838 | Final Approval | Attainment Date Extension |
| 01/21/2011 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | PENNSYLVANIA | 76 FR 3840 | Final Approval | Attainment Date Extension |
| 12/20/2010 | Dallas-Fort Worth, TX | TEXAS | 75 FR 79302 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 12/20/2010 | Dallas-Fort Worth, TX | TEXAS | 75 FR 79302 | Final Approval | Failure to Attain by Attainment Date |
| 12/15/2010 | Inland Sheboygan County, WI | WISCONSIN | 75 FR 78197 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/15/2010 | Inland Sheboygan County, WI | WISCONSIN | 75 FR 78164 | Direct Final | Clean Data Determination/Attainment Determination |
| 12/15/2010 | Milwaukee-Racine, WI | WISCONSIN | 75 FR 78197 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/15/2010 | Milwaukee-Racine, WI | WISCONSIN | 75 FR 78164 | Direct Final | Clean Data Determination/Attainment Determination |
| 12/15/2010 | Shoreline Sheboygan County, WI | WISCONSIN | 75 FR 78197 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 12/15/2010 | Shoreline Sheboygan County, WI | WISCONSIN | 75 FR 78164 | Direct Final | Clean Data Determination/Attainment Determination |
| 12/06/2010 | Boston-Manchester-Portsmouth (SE), NH | NEW HAMPSHIRE | 75 FR 75656 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 11/30/2010 | Atlanta, GA | GEORGIA | 75 FR 73969 | Final Approval | Attainment Date Extension |
| 11/09/2010 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | DELAWARE | 75 FR 68736 | Proposed Approval | Attainment Date Extension |
| 11/09/2010 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | MARYLAND | 75 FR 68736 | Proposed Approval | Attainment Date Extension |
| 11/09/2010 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | NEW JERSEY | 75 FR 68733 | Proposed Approval | Attainment Date Extension |
| 11/09/2010 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | PENNSYLVANIA | 75 FR 68736 | Proposed Approval | Attainment Date Extension |
| 10/21/2010 | Providence (all of RI), RI | RHODE ISLAND | 75 FR 64949 | Final Approval | Clean Data Determination/Attainment Determination |
| 10/20/2010 | Beaumont-Port Arthur, TX | TEXAS | 75 FR 64675 | Final Approval | Redesignation to Maintenance |
| 10/12/2010 | Knoxville, TN | TENNESSEE | 75 FR 62470 | Final Approval | Clean Data Determination/Attainment Determination |
| 10/07/2010 | Knoxville, TN | TENNESSEE | 75 FR 62026 | Proposed Approval | Redesignation to Maintenance |
| 09/24/2010 | Allegan County, MI | MICHIGAN | 75 FR 58312 | Final Approval | Redesignation to Maintenance |
| 09/17/2010 | Atlanta, GA | GEORGIA | 75 FR 56943 | Proposed Approval | Attainment Date Extension |
| 09/09/2010 | Baton Rouge, LA | LOUISIANA | 75 FR 54778 | Final Approval | Clean Data Determination/Attainment Determination |
| 09/08/2010 | Baltimore, MD | MARYLAND | 75 FR 54497 | Withdrawal | Attainment Date Extension |
| 08/31/2010 | Greater Connecticut, CT | CONNECTICUT | 75 FR 53219 | Final Approval | Clean Data Determination/Attainment Determination |
| 08/09/2010 | Dallas-Fort Worth, TX | TEXAS | 75 FR 47746 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 08/09/2010 | Dallas-Fort Worth, TX | TEXAS | 75 FR 47746 | Proposed Approval | Failure to Attain by Attainment Date |
| 08/05/2010 | Cincinnati-Hamilton, OH-KY-IN | KENTUCKY | 75 FR 47218 | Final Approval | Redesignation to Maintenance |
| 08/04/2010 | Charlotte-Gastonia-Rock Hill, NC-SC | NORTH CAROLINA | 75 FR 46881 | Proposed Approval | Attainment Date Extension |
| 08/04/2010 | Charlotte-Gastonia-Rock Hill, NC-SC | SOUTH CAROLINA | 75 FR 46881 | Proposed Approval | Attainment Date Extension |
| 08/03/2010 | Knoxville, TN | TENNESSEE | 75 FR 45568 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 07/28/2010 | Providence (all of RI), RI | RHODE ISLAND | 75 FR 44179 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 07/23/2010 | Baltimore, MD | MARYLAND | 75 FR 43114 | Proposed Approval | Attainment Date Extension |
| 07/23/2010 | Baltimore, MD | MARYLAND | 75 FR 43069 | Direct Final | Attainment Date Extension |
| 07/20/2010 | Allegan County, MI | MICHIGAN | 75 FR 42018 | Proposed Approval | Redesignation to Maintenance |
| 07/12/2010 | Door County, WI | WISCONSIN | 75 FR 39635 | Final Approval | Redesignation to Maintenance |
| 07/12/2010 | Manitowoc County, WI | WISCONSIN | 75 FR 39635 | Final Approval | Redesignation to Maintenance |
| 06/25/2010 | Baton Rouge, LA | LOUISIANA | 75 FR 36316 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 06/03/2010 | Providence (all of RI), RI | RHODE ISLAND | 75 FR 31288 | Final Approval | Clean Data Determination/Attainment Determination |
| 06/01/2010 | Greater Connecticut, CT | CONNECTICUT | 75 FR 30310 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 05/17/2010 | Beaumont-Port Arthur, TX | TEXAS | 75 FR 27514 | Proposed Approval | Redesignation to Maintenance |
| 05/12/2010 | Cincinnati-Hamilton, OH-KY-IN | KENTUCKY | 75 FR 26685 | Proposed Approval | Redesignation to Maintenance |
| 05/11/2010 | Chicago-Gary-Lake County, IL-IN | INDIANA | 75 FR 26113 | Final Approval | Redesignation to Maintenance |
| 05/11/2010 | Cincinnati-Hamilton, OH-KY-IN | INDIANA | 75 FR 26118 | Final Approval | Redesignation to Maintenance |
| 05/11/2010 | Cincinnati-Hamilton, OH-KY-IN | OHIO | 75 FR 26118 | Final Approval | Redesignation to Maintenance |
| 05/05/2010 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 75 FR 24409 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 05/05/2010 | Riverside County (Coachella Valley), CA | CALIFORNIA | 75 FR 24409 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 05/05/2010 | Sacramento Metro, CA | CALIFORNIA | 75 FR 24409 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 05/05/2010 | San Joaquin Valley, CA | CALIFORNIA | 75 FR 24409 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 04/27/2010 | Door County, WI | WISCONSIN | 75 FR 22047 | Proposed Approval | Redesignation to Maintenance |
| 04/27/2010 | Manitowoc County, WI | WISCONSIN | 75 FR 22047 | Proposed Approval | Redesignation to Maintenance |
| 03/24/2010 | Memphis, TN-AR | ARKANSAS | 75 FR 14077 | Final Approval | Redesignation to Maintenance |
| 03/12/2010 | Chicago-Gary-Lake County, IL-IN | ILLINOIS | 75 FR 12088 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/12/2010 | Chicago-Gary-Lake County, IL-IN | INDIANA | 75 FR 12090 | Proposed Approval | Redesignation to Maintenance |
| 03/12/2010 | Chicago-Gary-Lake County, IL-IN | INDIANA | 75 FR 12088 | Final Approval | Clean Data Determination/Attainment Determination |
| 02/26/2010 | Cincinnati-Hamilton, OH-KY-IN | INDIANA | 75 FR 8871 | Proposed Approval | Redesignation to Maintenance |
| 02/26/2010 | Cincinnati-Hamilton, OH-KY-IN | OHIO | 75 FR 8871 | Proposed Approval | Redesignation to Maintenance |
| 02/25/2010 | Providence (all of RI), RI | RHODE ISLAND | 75 FR 8571 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 01/14/2010 | Memphis, TN-AR | ARKANSAS | 75 FR 2091 | Proposed Approval | Redesignation to Maintenance |
| 01/04/2010 | Memphis, TN-AR | TENNESSEE | 75 FR 56 | Final Approval | Redesignation to Maintenance |
| 12/07/2009 | Buffalo-Niagara Falls, NY | NEW YORK | 74 FR 63993 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/07/2009 | Essex County (Whiteface Mtn.), NY | NEW YORK | 74 FR 63993 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/07/2009 | Haywood and Swain Counties (Great Smoky NP), NC | NORTH CAROLINA | 74 FR 63995 | Final Approval | Redesignation to Maintenance |
| 12/07/2009 | Jamestown, NY | NEW YORK | 74 FR 63993 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/07/2009 | Poughkeepsie, NY | NEW YORK | 74 FR 63993 | Final Approval | Clean Data Determination/Attainment Determination |
| 12/03/2009 | Imperial County, CA | CALIFORNIA | 74 FR 63309 | Final Approval | Clean Data Determination/Attainment Determination |
| 11/19/2009 | Memphis, TN-AR | TENNESSEE | 74 FR 59943 | Proposed Approval | Redesignation to Maintenance |
| 10/16/2009 | Haywood and Swain Counties (Great Smoky NP), NC | NORTH CAROLINA | 74 FR 53198 | Proposed Approval | Redesignation to Maintenance |
| 09/24/2009 | Chicago-Gary-Lake County, IL-IN | ILLINOIS | 74 FR 48703 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/24/2009 | Chicago-Gary-Lake County, IL-IN | INDIANA | 74 FR 48703 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/23/2009 | Buffalo-Niagara Falls, NY | NEW YORK | 74 FR 48498 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/23/2009 | Essex County (Whiteface Mtn.), NY | NEW YORK | 74 FR 48498 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/23/2009 | Imperial County, CA | CALIFORNIA | 74 FR 48495 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/23/2009 | Jamestown, NY | NEW YORK | 74 FR 48498 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/23/2009 | Poughkeepsie, NY | NEW YORK | 74 FR 48498 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 09/15/2009 | Cleveland-Akron-Lorain, OH | OHIO | 74 FR 47414 | Final Approval | Redesignation to Maintenance |
| 09/15/2009 | Columbus, OH | OHIO | 74 FR 47404 | Final Approval | Redesignation to Maintenance |
| 08/27/2009 | Los Angeles-South Coast Air Basin, CA | CALIFORNIA | 74 FR 43654 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 08/27/2009 | Morongo Band of Mission Indians, CA | CALIFORNIA | 74 FR 43654 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 08/27/2009 | Morongo Band of Mission Indians, CA | CALIFORNIA | 74 FR 43654 | Proposed Approval | Correction/Clarification |
| 08/27/2009 | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | CALIFORNIA | 74 FR 43654 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 08/27/2009 | Riverside County (Coachella Valley), CA | CALIFORNIA | 74 FR 43654 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 08/27/2009 | Sacramento Metro, CA | CALIFORNIA | 74 FR 43654 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 08/27/2009 | San Joaquin Valley, CA | CALIFORNIA | 74 FR 43654 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 06/29/2009 | Detroit-Ann Arbor, MI | MICHIGAN | 74 FR 30950 | Final Approval | Redesignation to Maintenance |
| 06/12/2009 | Cleveland-Akron-Lorain, OH | OHIO | 74 FR 27957 | Proposed Approval | Redesignation to Maintenance |
| 06/12/2009 | Columbus, OH | OHIO | 74 FR 27973 | Proposed Approval | Redesignation to Maintenance |
| 04/23/2009 | Detroit-Ann Arbor, MI | MICHIGAN | 74 FR 18479 | Proposed Approval | Redesignation to Maintenance |
| 03/19/2009 | Clearfield and Indiana Counties, PA | PENNSYLVANIA | 74 FR 11674 | Final Approval | Redesignation to Maintenance |
| 03/19/2009 | Greene County, PA | PENNSYLVANIA | 74 FR 11671 | Final Approval | Redesignation to Maintenance |
| 01/16/2009 | Albany-Schenectady-Troy, NY | NEW YORK | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Allegan County, MI | MICHIGAN | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Amador and Calaveras Cos. (Central Mountain Cos.), CA | CALIFORNIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Buffalo-Niagara Falls, NY | NEW YORK | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Chico, CA | CALIFORNIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Cincinnati-Hamilton, OH-KY-IN | INDIANA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Cincinnati-Hamilton, OH-KY-IN | KENTUCKY | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Cincinnati-Hamilton, OH-KY-IN | OHIO | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Clearfield and Indiana Counties, PA | PENNSYLVANIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Columbus, OH | OHIO | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Door County, WI | WISCONSIN | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Essex County (Whiteface Mtn.), NY | NEW YORK | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Greene County, PA | PENNSYLVANIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Haywood and Swain Counties (Great Smoky NP), NC | NORTH CAROLINA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Jamestown, NY | NEW YORK | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Kern County (Eastern Kern), CA | CALIFORNIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Knoxville, TN | TENNESSEE | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Las Vegas, NV | NEVADA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Manitowoc County, WI | WISCONSIN | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | CALIFORNIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Nevada County (Western part), CA | CALIFORNIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Phoenix-Mesa, AZ | ARIZONA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Rochester, NY | NEW YORK | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | San Diego, CA | CALIFORNIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 01/16/2009 | Sutter County (part) (Sutter Buttes), CA | CALIFORNIA | 74 FR 2936 | Proposed Approval | Change from Subpart 1 to Subpart 2 |
| 11/18/2008 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 73 FR 67827 | Withdrawal | Redesignation to Maintenance |
| 10/01/2008 | Houston-Galveston-Brazoria, TX | TEXAS | 73 FR 56983 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 07/23/2008 | Clearfield and Indiana Counties, PA | PENNSYLVANIA | 73 FR 42731 | Proposed Approval | Redesignation to Maintenance |
| 07/16/2008 | Greene County, PA | PENNSYLVANIA | 73 FR 40813 | Proposed Approval | Redesignation to Maintenance |
| 05/21/2008 | Kewaunee County, WI | WISCONSIN | 73 FR 29436 | Final Approval | Redesignation to Maintenance |
| 05/20/2008 | Ventura County (part), CA | CALIFORNIA | 73 FR 29073 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 04/02/2008 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 73 FR 17897 | Final Approval | Designation to Nonattainment |
| 03/28/2008 | Memphis, TN-AR | ARKANSAS | 73 FR 16547 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 03/28/2008 | Memphis, TN-AR | ARKANSAS | 73 FR 16547 | Final Approval | Failure to Attain by Attainment Date |
| 03/28/2008 | Memphis, TN-AR | TENNESSEE | 73 FR 16547 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 03/28/2008 | Memphis, TN-AR | TENNESSEE | 73 FR 16547 | Final Approval | Failure to Attain by Attainment Date |
| 03/25/2008 | Albany-Schenectady-Troy, NY | NEW YORK | 73 FR 15672 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/25/2008 | Jefferson County, NY | NEW YORK | 73 FR 15672 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/25/2008 | Rochester, NY | NEW YORK | 73 FR 15672 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/21/2008 | Baton Rouge, LA | LOUISIANA | 73 FR 15087 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 03/21/2008 | Baton Rouge, LA | LOUISIANA | 73 FR 15087 | Final Approval | Failure to Attain by Attainment Date |
| 03/18/2008 | Beaumont-Port Arthur, TX | TEXAS | 73 FR 14391 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 03/18/2008 | Beaumont-Port Arthur, TX | TEXAS | 73 FR 14391 | Final Approval | Failure to Attain by Attainment Date |
| 03/18/2008 | Boston-Manchester-Portsmouth (SE), NH | NEW HAMPSHIRE | 73 FR 14387 | Final Approval | Clean Data Determination/Attainment Determination |
| 03/06/2008 | Atlanta, GA | GEORGIA | 73 FR 12013 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 03/06/2008 | Atlanta, GA | GEORGIA | 73 FR 12013 | Final Approval | Failure to Attain by Attainment Date |
| 03/04/2008 | Allentown-Bethlehem-Easton, PA | PENNSYLVANIA | 73 FR 11557 | Final Approval | Redesignation to Maintenance |
| 03/04/2008 | Erie, PA | PENNSYLVANIA | 73 FR 11560 | Final Approval | Correction/Clarification |
| 03/04/2008 | Johnstown, PA | PENNSYLVANIA | 73 FR 11560 | Final Approval | Correction/Clarification |
| 03/04/2008 | Youngstown-Warren-Sharon, OH-PA | PENNSYLVANIA | 73 FR 11560 | Final Approval | Correction/Clarification |
| 02/14/2008 | Albany-Schenectady-Troy, NY | NEW YORK | 73 FR 8637 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/14/2008 | Jefferson County, NY | NEW YORK | 73 FR 8637 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/14/2008 | Rochester, NY | NEW YORK | 73 FR 8637 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/13/2008 | Imperial County, CA | CALIFORNIA | 73 FR 8209 | Final Approval | Change to a Higher Classification (Bump-Ups) |
| 02/07/2008 | Boston-Manchester-Portsmouth (SE), NH | NEW HAMPSHIRE | 73 FR 7234 | Proposed Approval | Clean Data Determination/Attainment Determination |
| 02/06/2008 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 73 FR 6863 | Proposed Approval | Designation to Nonattainment |
| 01/14/2008 | Erie, PA | PENNSYLVANIA | 73 FR 2162 | Final Approval | Correction/Clarification |
| 01/14/2008 | Reading, PA | PENNSYLVANIA | 73 FR 2162 | Final Approval | Correction/Clarification |
| 01/14/2008 | York, PA | PENNSYLVANIA | 73 FR 2163 | Final Approval | Redesignation to Maintenance |
| 01/14/2008 | Youngstown-Warren-Sharon, OH-PA | PENNSYLVANIA | 73 FR 2162 | Final Approval | Correction/Clarification |
| 01/07/2008 | Allentown-Bethlehem-Easton, PA | PENNSYLVANIA | 73 FR 1162 | Proposed Approval | Redesignation to Maintenance |
| 12/31/2007 | Houston-Galveston-Brazoria, TX | TEXAS | 72 FR 74252 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 12/26/2007 | Raleigh-Durham-Chapel Hill, NC | NORTH CAROLINA | 72 FR 72948 | Final Approval | Redesignation to Maintenance |
| 12/11/2007 | Kewaunee County, WI | WISCONSIN | 72 FR 70255 | Proposed Approval | Redesignation to Maintenance |
| 12/05/2007 | Charleston, WV | WEST VIRGINIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Erie, PA | PENNSYLVANIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Fredericksburg, VA | VIRGINIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Huntington-Ashland, WV-KY | KENTUCKY | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Huntington-Ashland, WV-KY | WEST VIRGINIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Kent and Queen Anne's Counties, MD | MARYLAND | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Madison and Page Counties (Shenandoah NP), VA | VIRGINIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Parkersburg-Marietta, WV-OH | OHIO | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Parkersburg-Marietta, WV-OH | WEST VIRGINIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Steubenville-Weirton, OH-WV | OHIO | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Steubenville-Weirton, OH-WV | WEST VIRGINIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Wheeling, WV-OH | OHIO | 72 FR 68515 | Final Approval | Correction/Clarification |
| 12/05/2007 | Wheeling, WV-OH | WEST VIRGINIA | 72 FR 68515 | Final Approval | Correction/Clarification |
| 11/23/2007 | Imperial County, CA | CALIFORNIA | 72 FR 65682 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 11/19/2007 | Scranton-Wilkes-Barre, PA | PENNSYLVANIA | 72 FR 64948 | Final Approval | Redesignation to Maintenance |
| 11/14/2007 | State College, PA | PENNSYLVANIA | 72 FR 63990 | Final Approval | Redesignation to Maintenance |
| 10/30/2007 | Baton Rouge, LA | LOUISIANA | 72 FR 61315 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 10/30/2007 | Beaumont-Port Arthur, TX | TEXAS | 72 FR 61310 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 10/24/2007 | York, PA | PENNSYLVANIA | 72 FR 60296 | Proposed Approval | Redesignation to Maintenance |
| 10/19/2007 | Indianapolis, IN | INDIANA | 72 FR 59210 | Final Approval | Redesignation to Maintenance |
| 10/19/2007 | Youngstown-Warren-Sharon, OH-PA | PENNSYLVANIA | 72 FR 59213 | Final Approval | Redesignation to Maintenance |
| 10/16/2007 | Atlanta, GA | GEORGIA | 72 FR 58572 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 10/16/2007 | Memphis, TN-AR | ARKANSAS | 72 FR 58577 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 10/16/2007 | Memphis, TN-AR | TENNESSEE | 72 FR 58577 | Proposed Approval | Change to a Higher Classification (Bump-Ups) |
| 10/16/2007 | Murray County (Chattahoochee Nat Forest), GA | GEORGIA | 72 FR 58538 | Final Approval | Redesignation to Maintenance |
| 10/09/2007 | Erie, PA | PENNSYLVANIA | 72 FR 57207 | Final Approval | Redesignation to Maintenance |
| 10/03/2007 | Raleigh-Durham-Chapel Hill, NC | NORTH CAROLINA | 72 FR 56312 | Proposed Approval | Redesignation to Maintenance |
| 09/25/2007 | Franklin County, PA | PENNSYLVANIA | 72 FR 54361 | Final Approval | Correction/Clarification |
| 09/25/2007 | Scranton-Wilkes-Barre, PA | PENNSYLVANIA | 72 FR 54390 | Proposed Approval | Redesignation to Maintenance |
| 09/21/2007 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 72 FR 53952 | Final Approval | Extension of Deferral of Designation |
| 09/19/2007 | Macon, GA | GEORGIA | 72 FR 53432 | Final Approval | Redesignation to Maintenance |
| 09/11/2007 | State College, PA | PENNSYLVANIA | 72 FR 51747 | Proposed Approval | Redesignation to Maintenance |
| 08/29/2007 | Murray County (Chattahoochee Nat Forest), GA | GEORGIA | 72 FR 49679 | Proposed Approval | Redesignation to Maintenance |
| 08/24/2007 | Louisville, KY-IN | KENTUCKY | 72 FR 48558 | Final Approval | Technical Amendment |
| 08/24/2007 | Reading, PA | PENNSYLVANIA | 72 FR 48559 | Final Approval | Redesignation to Maintenance |
| 08/13/2007 | Dayton-Springfield, OH | OHIO | 72 FR 45169 | Final Approval | Redesignation to Maintenance |
| 08/09/2007 | Toledo, OH | OHIO | 72 FR 44784 | Final Approval | Redesignation to Maintenance |
| 08/08/2007 | La Porte County, IN | INDIANA | 72 FR 44383 | Final Approval | Correction/Clarification |
| 08/03/2007 | Huntington-Ashland, WV-KY | KENTUCKY | 72 FR 43172 | Final Approval | Redesignation to Maintenance |
| 08/02/2007 | Macon, GA | GEORGIA | 72 FR 42354 | Proposed Approval | Redesignation to Maintenance |
| 08/01/2007 | Altoona, PA | PENNSYLVANIA | 72 FR 41906 | Final Approval | Redesignation to Maintenance |
| 08/01/2007 | Johnstown, PA | PENNSYLVANIA | 72 FR 41903 | Final Approval | Redesignation to Maintenance |
| 07/31/2007 | Indianapolis, IN | INDIANA | 72 FR 41658 | Proposed Approval | Redesignation to Maintenance |
| 07/27/2007 | Youngstown-Warren-Sharon, OH-PA | PENNSYLVANIA | 72 FR 41246 | Proposed Approval | Redesignation to Maintenance |
| 07/25/2007 | Erie, PA | PENNSYLVANIA | 72 FR 40776 | Proposed Approval | Redesignation to Maintenance |
| 07/25/2007 | Franklin County, PA | PENNSYLVANIA | 72 FR 40746 | Final Approval | Redesignation to Maintenance |
| 07/25/2007 | Harrisburg-Lebanon-Carlisle, PA | PENNSYLVANIA | 72 FR 40749 | Final Approval | Redesignation to Maintenance |
| 07/19/2007 | La Porte County, IN | INDIANA | 72 FR 39574 | Final Approval | Redesignation to Maintenance |
| 07/19/2007 | Louisville, KY-IN | INDIANA | 72 FR 39571 | Final Approval | Redesignation to Maintenance |
| 07/19/2007 | South Bend-Elkhart, IN | INDIANA | 72 FR 39577 | Final Approval | Redesignation to Maintenance |
| 07/11/2007 | Pittsburgh-Beaver Valley, PA | PENNSYLVANIA | 72 FR 37683 | Proposed Approval | Redesignation to Maintenance |
| 07/06/2007 | Lancaster, PA | PENNSYLVANIA | 72 FR 36889 | Final Approval | Redesignation to Maintenance |
| 07/06/2007 | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | VIRGINIA | 72 FR 36895 | Final Approval | Correction/Clarification |
| 07/06/2007 | Tioga County, PA | PENNSYLVANIA | 72 FR 36892 | Final Approval | Redesignation to Maintenance |
| 07/05/2007 | Louisville, KY-IN | KENTUCKY | 72 FR 36601 | Final Approval | Redesignation to Maintenance |
| 06/28/2007 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 72 FR 35356 | Final Approval | Extension of Deferral of Designation |
| 06/20/2007 | Dayton-Springfield, OH | OHIO | 72 FR 33937 | Proposed Approval | Redesignation to Maintenance |
| 06/12/2007 | Columbus, OH | OHIO | 72 FR 32257 | Proposed Approval | Redesignation to Maintenance |
| 06/12/2007 | Toledo, OH | OHIO | 72 FR 32246 | Proposed Approval | Redesignation to Maintenance |
| 06/12/2007 | Youngstown-Warren-Sharon, OH-PA | OHIO | 72 FR 32190 | Final Approval | Redesignation to Maintenance |
| 06/07/2007 | Altoona, PA | PENNSYLVANIA | 72 FR 31495 | Proposed Approval | Redesignation to Maintenance |
| 06/01/2007 | Harrisburg-Lebanon-Carlisle, PA | PENNSYLVANIA | 72 FR 30521 | Proposed Approval | Redesignation to Maintenance |
| 06/01/2007 | Johnstown, PA | PENNSYLVANIA | 72 FR 30509 | Proposed Approval | Redesignation to Maintenance |
| 06/01/2007 | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | VIRGINIA | 72 FR 30490 | Final Approval | Redesignation to Maintenance |
| 06/01/2007 | Richmond-Petersburg, VA | VIRGINIA | 72 FR 30485 | Final Approval | Redesignation to Maintenance |
| 05/31/2007 | Chicago-Gary-Lake County, IL-IN | INDIANA | 72 FR 30435 | Proposed Approval | Redesignation to Maintenance |
| 05/30/2007 | Franklin County, PA | PENNSYLVANIA | 72 FR 29914 | Proposed Approval | Redesignation to Maintenance |
| 05/30/2007 | Reading, PA | PENNSYLVANIA | 72 FR 29901 | Proposed Approval | Redesignation to Maintenance |
| 05/16/2007 | Benton Harbor, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Benzie County, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Canton-Massillon, OH | OHIO | 72 FR 27647 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Cass County, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Flint, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Grand Rapids, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Huron County, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Kalamazoo-Battle Creek, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Lansing-East Lansing, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Lima, OH | OHIO | 72 FR 27647 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Mason County, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Muskegon, MI | MICHIGAN | 72 FR 27425 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Parkersburg-Marietta, WV-OH | OHIO | 72 FR 27651 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Steubenville-Weirton, OH-WV | OHIO | 72 FR 27639 | Final Approval | Redesignation to Maintenance |
| 05/16/2007 | Wheeling, WV-OH | OHIO | 72 FR 27643 | Final Approval | Redesignation to Maintenance |
| 05/15/2007 | Lancaster, PA | PENNSYLVANIA | 72 FR 27265 | Proposed Approval | Redesignation to Maintenance |
| 05/15/2007 | Wheeling, WV-OH | WEST VIRGINIA | 72 FR 27247 | Final Approval | Redesignation to Maintenance |
| 05/14/2007 | Steubenville-Weirton, OH-WV | WEST VIRGINIA | 72 FR 27060 | Final Approval | Redesignation to Maintenance |
| 05/11/2007 | Huntington-Ashland, WV-KY | KENTUCKY | 72 FR 26759 | Proposed Approval | Redesignation to Maintenance |
| 05/10/2007 | Richmond-Petersburg, VA | VIRGINIA | 72 FR 26581 | Proposed Approval | Correction/Clarification |
| 05/08/2007 | Louisville, KY-IN | INDIANA | 72 FR 26057 | Proposed Approval | Redesignation to Maintenance |
| 05/08/2007 | Parkersburg-Marietta, WV-OH | WEST VIRGINIA | 72 FR 25967 | Final Approval | Redesignation to Maintenance |
| 05/08/2007 | Tioga County, PA | PENNSYLVANIA | 72 FR 26046 | Proposed Approval | Redesignation to Maintenance |
| 04/27/2007 | Louisville, KY-IN | KENTUCKY | 72 FR 20966 | Proposed Approval | Redesignation to Maintenance |
| 04/18/2007 | La Porte County, IN | INDIANA | 72 FR 19424 | Proposed Approval | Redesignation to Maintenance |
| 04/18/2007 | South Bend-Elkhart, IN | INDIANA | 72 FR 19413 | Proposed Approval | Redesignation to Maintenance |
| 04/18/2007 | Youngstown-Warren-Sharon, OH-PA | OHIO | 72 FR 19435 | Proposed Approval | Redesignation to Maintenance |
| 04/13/2007 | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | VIRGINIA | 72 FR 18602 | Proposed Approval | Redesignation to Maintenance |
| 04/12/2007 | Richmond-Petersburg, VA | VIRGINIA | 72 FR 18434 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Benton Harbor, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Benzie County, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Canton-Massillon, OH | OHIO | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Cass County, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Flint, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Grand Rapids, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Huron County, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Kalamazoo-Battle Creek, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Lansing-East Lansing, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Lima, OH | OHIO | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Mason County, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Muskegon, MI | MICHIGAN | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Parkersburg-Marietta, WV-OH | OHIO | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Parkersburg-Marietta, WV-OH | WEST VIRGINIA | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Steubenville-Weirton, OH-WV | OHIO | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Steubenville-Weirton, OH-WV | WEST VIRGINIA | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Wheeling, WV-OH | OHIO | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/22/2007 | Wheeling, WV-OH | WEST VIRGINIA | 72 FR 13452 | Proposed Approval | Redesignation to Maintenance |
| 03/01/2007 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 72 FR 9285 | Proposed Approval | Extension of Deferral of Designation |
| 01/17/2007 | Parkersburg-Marietta, WV-OH | OHIO | 72 FR 1956 | Proposed Approval | Redesignation to Maintenance |
| 01/12/2007 | Parkersburg-Marietta, WV-OH | WEST VIRGINIA | 72 FR 1474 | Proposed Approval | Redesignation to Maintenance |
| 01/11/2007 | Fort Wayne, IN | INDIANA | 72 FR 1292 | Final Approval | Redesignation to Maintenance |
| 01/08/2007 | Benton Harbor, MI | MICHIGAN | 72 FR 699 | Proposed Approval | Redesignation to Maintenance |
| 01/08/2007 | Cass County, MI | MICHIGAN | 72 FR 699 | Proposed Approval | Redesignation to Maintenance |
| 01/08/2007 | Flint, MI | MICHIGAN | 72 FR 699 | Proposed Approval | Redesignation to Maintenance |
| 01/08/2007 | Muskegon, MI | MICHIGAN | 72 FR 699 | Proposed Approval | Redesignation to Maintenance |
| 01/08/2007 | Steubenville-Weirton, OH-WV | OHIO | 72 FR 711 | Proposed Approval | Redesignation to Maintenance |
| 12/27/2006 | Canton-Massillon, OH | OHIO | 71 FR 77678 | Proposed Approval | Redesignation to Maintenance |
| 12/27/2006 | Lima, OH | OHIO | 71 FR 77678 | Proposed Approval | Redesignation to Maintenance |
| 12/27/2006 | Wheeling, WV-OH | OHIO | 71 FR 77666 | Proposed Approval | Redesignation to Maintenance |
| 12/22/2006 | Kent and Queen Anne's Counties, MD | MARYLAND | 71 FR 76920 | Final Approval | Redesignation to Maintenance |
| 12/11/2006 | Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME | MAINE | 71 FR 71489 | Final Approval | Redesignation to Maintenance |
| 12/11/2006 | Portland, ME | MAINE | 71 FR 71489 | Final Approval | Redesignation to Maintenance |
| 12/07/2006 | Benzie County, MI | MICHIGAN | 71 FR 70915 | Proposed Approval | Redesignation to Maintenance |
| 12/07/2006 | Grand Rapids, MI | MICHIGAN | 71 FR 70915 | Proposed Approval | Redesignation to Maintenance |
| 12/07/2006 | Huron County, MI | MICHIGAN | 71 FR 70915 | Proposed Approval | Redesignation to Maintenance |
| 12/07/2006 | Kalamazoo-Battle Creek, MI | MICHIGAN | 71 FR 70915 | Proposed Approval | Redesignation to Maintenance |
| 12/07/2006 | Lansing-East Lansing, MI | MICHIGAN | 71 FR 70915 | Proposed Approval | Redesignation to Maintenance |
| 12/07/2006 | Mason County, MI | MICHIGAN | 71 FR 70915 | Proposed Approval | Redesignation to Maintenance |
| 11/29/2006 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 71 FR 69022 | Final Approval | Extension of Deferral of Designation |
| 11/06/2006 | Rocky Mount, NC | NORTH CAROLINA | 71 FR 64906 | Proposed Approval | Redesignation to Maintenance |
| 11/06/2006 | Rocky Mount, NC | NORTH CAROLINA | 71 FR 64891 | Direct Final | Redesignation to Maintenance |
| 10/19/2006 | Fort Wayne, IN | INDIANA | 71 FR 61686 | Withdrawal | Redesignation to Maintenance |
| 10/17/2006 | Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME | MAINE | 71 FR 60937 | Proposed Approval | Redesignation to Maintenance |
| 10/17/2006 | Portland, ME | MAINE | 71 FR 60937 | Proposed Approval | Redesignation to Maintenance |
| 10/13/2006 | Macon, GA | GEORGIA | 71 FR 60429 | Final Approval | Boundary Change |
| 10/13/2006 | Murray County (Chattahoochee Nat Forest), GA | GEORGIA | 71 FR 60429 | Final Approval | Correction/Clarification |
| 10/10/2006 | Kent and Queen Anne's Counties, MD | MARYLAND | 71 FR 59414 | Proposed Approval | Redesignation to Maintenance |
| 10/02/2006 | Steubenville-Weirton, OH-WV | WEST VIRGINIA | 71 FR 57905 | Proposed Approval | Redesignation to Maintenance |
| 10/02/2006 | Wheeling, WV-OH | WEST VIRGINIA | 71 FR 57894 | Proposed Approval | Redesignation to Maintenance |
| 09/15/2006 | Huntington-Ashland, WV-KY | WEST VIRGINIA | 71 FR 54421 | Final Approval | Redesignation to Maintenance |
| 08/30/2006 | Fort Wayne, IN | INDIANA | 71 FR 51546 | Proposed Approval | Redesignation to Maintenance |
| 08/30/2006 | Fort Wayne, IN | INDIANA | 71 FR 51489 | Direct Final | Redesignation to Maintenance |
| 08/11/2006 | Clarksville-Hopkinsville, TN-KY | TENNESSEE | 71 FR 46105 | Final Approval | Correction/Clarification |
| 08/09/2006 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 71 FR 45492 | Proposed Approval | Extension of Deferral of Designation |
| 07/13/2006 | Huntington-Ashland, WV-KY | WEST VIRGINIA | 71 FR 39618 | Proposed Approval | Redesignation to Maintenance |
| 07/11/2006 | Charleston, WV | WEST VIRGINIA | 71 FR 39001 | Final Approval | Redesignation to Maintenance |
| 05/12/2006 | Birmingham, AL | ALABAMA | 71 FR 27631 | Final Approval | Redesignation to Maintenance |
| 05/04/2006 | Charleston, WV | WEST VIRGINIA | 71 FR 26299 | Proposed Approval | Redesignation to Maintenance |
| 01/25/2006 | Birmingham, AL | ALABAMA | 71 FR 4077 | Proposed Approval | Redesignation to Maintenance |
| 01/25/2006 | Clarksville-Hopkinsville, TN-KY | KENTUCKY | 71 FR 4047 | Final Approval | Redesignation to Maintenance |
| 01/05/2006 | Terre Haute, IN | INDIANA | 71 FR 541 | Final Approval | Redesignation to Maintenance |
| 01/03/2006 | Madison and Page Counties (Shenandoah NP), VA | VIRGINIA | 71 FR 24 | Final Approval | Redesignation to Maintenance |
| 12/29/2005 | Evansville, IN | INDIANA | 70 FR 77026 | Final Approval | Redesignation to Maintenance |
| 12/23/2005 | Fredericksburg, VA | VIRGINIA | 70 FR 76165 | Final Approval | Redesignation to Maintenance |
| 11/23/2005 | Terre Haute, IN | INDIANA | 70 FR 70751 | Proposed Approval | Redesignation to Maintenance |
| 11/16/2005 | Muncie, IN | INDIANA | 70 FR 69488 | Proposed Approval | Redesignation to Maintenance |
| 11/16/2005 | Muncie, IN | INDIANA | 70 FR 69443 | Direct Final | Redesignation to Maintenance |
| 11/14/2005 | Greene County, IN | INDIANA | 70 FR 69130 | Proposed Approval | Redesignation to Maintenance |
| 11/14/2005 | Greene County, IN | INDIANA | 70 FR 69085 | Direct Final | Redesignation to Maintenance |
| 11/14/2005 | Jackson County, IN | INDIANA | 70 FR 69130 | Proposed Approval | Redesignation to Maintenance |
| 11/14/2005 | Jackson County, IN | INDIANA | 70 FR 69085 | Direct Final | Redesignation to Maintenance |
| 11/04/2005 | Madison and Page Counties (Shenandoah NP), VA | VIRGINIA | 70 FR 67109 | Proposed Approval | Redesignation to Maintenance |
| 11/02/2005 | Fredericksburg, VA | VIRGINIA | 70 FR 66316 | Proposed Approval | Redesignation to Maintenance |
| 10/21/2005 | Clarksville-Hopkinsville, TN-KY | KENTUCKY | 70 FR 61232 | Withdrawal | Redesignation to Maintenance |
| 09/30/2005 | Fredericksburg, VA | VIRGINIA | 70 FR 57238 | Withdrawal | Redesignation to Maintenance |
| 09/22/2005 | Clarksville-Hopkinsville, TN-KY | KENTUCKY | 70 FR 55613 | Proposed Approval | Redesignation to Maintenance |
| 09/22/2005 | Clarksville-Hopkinsville, TN-KY | KENTUCKY | 70 FR 55550 | Direct Final | Redesignation to Maintenance |
| 09/22/2005 | Clarksville-Hopkinsville, TN-KY | TENNESSEE | 70 FR 55613 | Proposed Approval | Redesignation to Maintenance |
| 09/22/2005 | Clarksville-Hopkinsville, TN-KY | TENNESSEE | 70 FR 55559 | Direct Final | Redesignation to Maintenance |
| 09/12/2005 | Fredericksburg, VA | VIRGINIA | 70 FR 53746 | Proposed Approval | Redesignation to Maintenance |
| 09/09/2005 | Evansville, IN | INDIANA | 70 FR 53605 | Proposed Approval | Redesignation to Maintenance |
| 08/29/2005 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 70 FR 50988 | Final Approval | Extension of Deferral of Designation |
| 06/08/2005 | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | COLORADO | 70 FR 33409 | Proposed Approval | Extension of Deferral of Designation |
| 09/22/2004 | Cass County, MI | MICHIGAN | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | Detroit-Ann Arbor, MI | MICHIGAN | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | Kent and Queen Anne's Counties, MD | MARYLAND | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | La Porte County, IN | INDIANA | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | Lancaster, PA | PENNSYLVANIA | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | Memphis, TN-AR | ARKANSAS | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | Memphis, TN-AR | TENNESSEE | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | Muskegon, MI | MICHIGAN | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/22/2004 | Richmond-Petersburg, VA | VIRGINIA | 69 FR 56697 | Final Approval | Change to a Lower Classification |
| 09/17/2004 | Las Vegas, NV | NEVADA | 69 FR 55956 | Final Approval | Boundary Change |
| 06/18/2004 | Las Vegas, NV | NEVADA | 69 FR 34076 | Final Approval | Extension of Deferral of Designation |
First Notice