Federal Register Notices Related to PM-2.5 (2006) Designations and Classifications

Data is current as of November 30, 2025
Ordered by Category

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

---

ATTAINMENT DATE EXTENSION
05/18/2016	OREGON	Oakridge, OR	81 FR 31202	Proposed Approval
07/18/2016	OREGON	Oakridge, OR	81 FR 46612	Final Approval
06/06/2017	UTAH	Logan, UT-ID	82 FR 25992	Proposed Approval
06/08/2017	IDAHO	Logan, UT-ID	82 FR 26638	Proposed Approval
09/08/2017	IDAHO	Logan, UT-ID	82 FR 42447	Final Approval
09/08/2017	UTAH	Logan, UT-ID	82 FR 42447	Final Approval
07/22/2020	CALIFORNIA	San Joaquin Valley, CA	85 FR 44192	Final Approval
ATTAINMENT DATE EXTENSION DENIED
09/02/2020	ALASKA	Fairbanks, AK	85 FR 54509	Final Approval
CHANGE FROM SUBPART 1 TO SUBPART 4
11/21/2013	ALASKA	Fairbanks, AK	78 FR 69806	Proposed Approval
11/21/2013	CALIFORNIA	Imperial County, CA	78 FR 69806	Proposed Approval
11/21/2013	PENNSYLVANIA	Liberty-Clairton, PA	78 FR 69806	Proposed Approval
11/21/2013	UTAH	Provo, UT	78 FR 69806	Proposed Approval
11/21/2013	UTAH	Salt Lake City, UT	78 FR 69806	Proposed Approval
06/02/2014	ALASKA	Fairbanks, AK	79 FR 31566	Final Approval
06/02/2014	ARIZONA	Nogales, AZ	79 FR 31566	Final Approval
06/02/2014	ARIZONA	West Central Pinal, AZ	79 FR 31566	Final Approval
06/02/2014	CALIFORNIA	Chico, CA	79 FR 31566	Final Approval
06/02/2014	CALIFORNIA	Imperial County, CA	79 FR 31566	Final Approval
06/02/2014	CALIFORNIA	Los Angeles-South Coast Air Basin, CA	79 FR 31566	Final Approval
06/02/2014	CALIFORNIA	Sacramento, CA	79 FR 31566	Final Approval
06/02/2014	CALIFORNIA	San Francisco Bay Area, CA	79 FR 31566	Final Approval
06/02/2014	CALIFORNIA	San Joaquin Valley, CA	79 FR 31566	Final Approval
06/02/2014	CALIFORNIA	Yuba City-Marysville, CA	79 FR 31566	Final Approval
06/02/2014	DELAWARE	Philadelphia-Wilmington, PA-NJ-DE	79 FR 31566	Final Approval
06/02/2014	IDAHO	Logan, UT-ID	79 FR 31566	Final Approval
06/02/2014	OREGON	Klamath Falls, OR	79 FR 31566	Final Approval
06/02/2014	OREGON	Oakridge, OR	79 FR 31566	Final Approval
06/02/2014	PENNSYLVANIA	Allentown, PA	79 FR 31566	Final Approval
06/02/2014	PENNSYLVANIA	Harrisburg-Lebanon-Carlisle-York, PA	79 FR 31566	Final Approval
06/02/2014	PENNSYLVANIA	Johnstown, PA	79 FR 31566	Final Approval
06/02/2014	PENNSYLVANIA	Lancaster, PA	79 FR 31566	Final Approval
06/02/2014	PENNSYLVANIA	Liberty-Clairton, PA	79 FR 31566	Final Approval
06/02/2014	PENNSYLVANIA	Philadelphia-Wilmington, PA-NJ-DE	79 FR 31566	Final Approval
06/02/2014	PENNSYLVANIA	Pittsburgh-Beaver Valley, PA	79 FR 31566	Final Approval
06/02/2014	TENNESSEE	Knoxville-Sevierville-La Follette, TN	79 FR 31566	Final Approval
06/02/2014	UTAH	Logan, UT-ID	79 FR 31566	Final Approval
06/02/2014	UTAH	Provo, UT	79 FR 31566	Final Approval
06/02/2014	UTAH	Salt Lake City, UT	79 FR 31566	Final Approval
06/02/2014	WASHINGTON	Tacoma, WA	79 FR 31566	Final Approval
CHANGE TO A HIGHER CLASSIFICATION (BUMP-UPS)
01/13/2015	CALIFORNIA	San Joaquin Valley, CA	80 FR 1816	Proposed Approval
10/20/2015	CALIFORNIA	Los Angeles-South Coast Air Basin, CA	80 FR 63640	Proposed Approval
11/09/2015	IDAHO	Logan, UT-ID	80 FR 69172	Proposed Approval
11/09/2015	UTAH	Logan, UT-ID	80 FR 69173	Proposed Approval
11/09/2015	UTAH	Provo, UT	80 FR 69173	Proposed Approval
11/09/2015	UTAH	Salt Lake City, UT	80 FR 69173	Proposed Approval
01/13/2016	CALIFORNIA	Los Angeles-South Coast Air Basin, CA	81 FR 1514	Final Approval
01/20/2016	CALIFORNIA	San Joaquin Valley, CA	81 FR 2993	Final Approval
12/16/2016	ALASKA	Fairbanks, AK	81 FR 91088	Proposed Approval
12/16/2016	IDAHO	Logan, UT-ID	81 FR 91088	Proposed Approval
12/16/2016	UTAH	Logan, UT-ID	81 FR 91088	Proposed Approval
12/16/2016	UTAH	Provo, UT	81 FR 91088	Proposed Approval
12/16/2016	UTAH	Salt Lake City, UT	81 FR 91088	Proposed Approval
05/10/2017	ALASKA	Fairbanks, AK	82 FR 21711	Final Approval
05/10/2017	UTAH	Provo, UT	82 FR 21711	Final Approval
05/10/2017	UTAH	Salt Lake City, UT	82 FR 21711	Final Approval
CLEAN DATA DETERMINATION/ATTAINMENT DETERMINATION
06/14/2010	ALABAMA	Birmingham, AL	75 FR 33562	Proposed Approval
09/20/2010	ALABAMA	Birmingham, AL	75 FR 57186	Final Approval
08/19/2011	WEST VIRGINIA	Charleston, WV	76 FR 51927	Proposed Approval
10/04/2011	OHIO	Steubenville-Weirton, OH-WV	76 FR 61291	Proposed Approval
10/04/2011	WEST VIRGINIA	Steubenville-Weirton, OH-WV	76 FR 61291	Proposed Approval
11/18/2011	WEST VIRGINIA	Charleston, WV	76 FR 71450	Final Approval
01/20/2012	PENNSYLVANIA	Allentown, PA	77 FR 2941	Proposed Approval
01/20/2012	PENNSYLVANIA	Harrisburg-Lebanon-Carlisle-York, PA	77 FR 2941	Proposed Approval
01/20/2012	PENNSYLVANIA	Johnstown, PA	77 FR 2941	Proposed Approval
01/20/2012	PENNSYLVANIA	Lancaster, PA	77 FR 2941	Proposed Approval
03/29/2012	PENNSYLVANIA	Allentown, PA	77 FR 18922	Final Approval
03/29/2012	PENNSYLVANIA	Harrisburg-Lebanon-Carlisle-York, PA	77 FR 18922	Final Approval
03/29/2012	PENNSYLVANIA	Johnstown, PA	77 FR 18922	Final Approval
03/29/2012	PENNSYLVANIA	Lancaster, PA	77 FR 18922	Final Approval
04/24/2012	WISCONSIN	Milwaukee-Racine, WI	77 FR 24436	Proposed Approval
05/14/2012	OHIO	Steubenville-Weirton, OH-WV	77 FR 28264	Final Approval
05/14/2012	WEST VIRGINIA	Steubenville-Weirton, OH-WV	77 FR 28264	Final Approval
06/06/2012	TENNESSEE	Knoxville-Sevierville-La Follette, TN	77 FR 33360	Proposed Approval
07/05/2012	MICHIGAN	Detroit-Ann Arbor, MI	77 FR 39659	Proposed Approval
07/05/2012	WASHINGTON	Tacoma, WA	77 FR 39657	Proposed Approval
08/02/2012	TENNESSEE	Knoxville-Sevierville-La Follette, TN	77 FR 45954	Final Approval
08/30/2012	CONNECTICUT	New York-N. New Jersey-Long Island, NY-NJ-CT	77 FR 52626	Proposed Approval
08/30/2012	NEW JERSEY	New York-N. New Jersey-Long Island, NY-NJ-CT	77 FR 52626	Proposed Approval
08/30/2012	NEW YORK	New York-N. New Jersey-Long Island, NY-NJ-CT	77 FR 52626	Proposed Approval
09/04/2012	WASHINGTON	Tacoma, WA	77 FR 53772	Final Approval
10/02/2012	DELAWARE	Philadelphia-Wilmington, PA-NJ-DE	77 FR 60089	Proposed Approval
10/02/2012	NEW JERSEY	Philadelphia-Wilmington, PA-NJ-DE	77 FR 60089	Proposed Approval
10/02/2012	PENNSYLVANIA	Philadelphia-Wilmington, PA-NJ-DE	77 FR 60089	Proposed Approval
10/26/2012	CALIFORNIA	Sacramento, CA	77 FR 65346	Proposed Approval
10/29/2012	CALIFORNIA	San Francisco Bay Area, CA	77 FR 65521	Proposed Approval
10/30/2012	ARIZONA	Nogales, AZ	77 FR 65656	Proposed Approval
10/30/2012	CALIFORNIA	Chico, CA	77 FR 65651	Proposed Approval
10/30/2012	CALIFORNIA	Yuba City-Marysville, CA	77 FR 65646	Proposed Approval
12/28/2012	WISCONSIN	Milwaukee-Racine, WI	77 FR 76427	Proposed Approval
12/31/2012	CONNECTICUT	New York-N. New Jersey-Long Island, NY-NJ-CT	77 FR 76867	Final Approval
12/31/2012	NEW JERSEY	New York-N. New Jersey-Long Island, NY-NJ-CT	77 FR 76867	Final Approval
12/31/2012	NEW YORK	New York-N. New Jersey-Long Island, NY-NJ-CT	77 FR 76867	Final Approval
01/07/2013	ARIZONA	Nogales, AZ	78 FR 887	Final Approval
01/07/2013	DELAWARE	Philadelphia-Wilmington, PA-NJ-DE	78 FR 882	Final Approval
01/07/2013	NEW JERSEY	Philadelphia-Wilmington, PA-NJ-DE	78 FR 882	Final Approval
01/07/2013	PENNSYLVANIA	Philadelphia-Wilmington, PA-NJ-DE	78 FR 882	Final Approval
01/09/2013	CALIFORNIA	San Francisco Bay Area, CA	78 FR 1760	Final Approval
01/10/2013	CALIFORNIA	Yuba City-Marysville, CA	78 FR 2211	Final Approval
07/12/2013	ARIZONA	West Central Pinal, AZ	78 FR 41901	Proposed Approval
07/15/2013	CALIFORNIA	Sacramento, CA	78 FR 42018	Final Approval
07/18/2013	WASHINGTON	Tacoma, WA	78 FR 42905	Proposed Approval
08/14/2013	PENNSYLVANIA	Pittsburgh-Beaver Valley, PA	78 FR 49403	Proposed Approval
09/04/2013	ARIZONA	West Central Pinal, AZ	78 FR 54394	Final Approval
09/10/2013	CALIFORNIA	Chico, CA	78 FR 55225	Final Approval
05/02/2014	PENNSYLVANIA	Pittsburgh-Beaver Valley, PA	79 FR 25014	Final Approval
04/23/2015	PENNSYLVANIA	Liberty-Clairton, PA	80 FR 22666	Proposed Approval
07/10/2015	PENNSYLVANIA	Liberty-Clairton, PA	80 FR 39696	Final Approval
04/13/2016	OREGON	Klamath Falls, OR	81 FR 21814	Proposed Approval
06/06/2016	OREGON	Klamath Falls, OR	81 FR 36176	Final Approval
12/16/2016	ARIZONA	Nogales, AZ	81 FR 91088	Proposed Approval
12/16/2016	CALIFORNIA	Chico, CA	81 FR 91088	Proposed Approval
12/16/2016	CALIFORNIA	Imperial County, CA	81 FR 91088	Proposed Approval
12/16/2016	CALIFORNIA	Sacramento, CA	81 FR 91088	Proposed Approval
12/16/2016	CALIFORNIA	San Francisco Bay Area, CA	81 FR 91088	Proposed Approval
12/16/2016	PENNSYLVANIA	Liberty-Clairton, PA	81 FR 91088	Proposed Approval
12/16/2016	TENNESSEE	Knoxville-Sevierville-La Follette, TN	81 FR 91088	Proposed Approval
03/13/2017	CALIFORNIA	Imperial County, CA	82 FR 13413	Proposed Approval
03/13/2017	CALIFORNIA	Imperial County, CA	82 FR 13392	Direct Final
05/10/2017	ARIZONA	Nogales, AZ	82 FR 21711	Final Approval
05/10/2017	CALIFORNIA	Chico, CA	82 FR 21711	Final Approval
05/10/2017	CALIFORNIA	Imperial County, CA	82 FR 21711	Final Approval
05/10/2017	CALIFORNIA	Sacramento, CA	82 FR 21711	Final Approval
05/10/2017	CALIFORNIA	San Francisco Bay Area, CA	82 FR 21711	Final Approval
05/10/2017	PENNSYLVANIA	Liberty-Clairton, PA	82 FR 21711	Final Approval
05/10/2017	TENNESSEE	Knoxville-Sevierville-La Follette, TN	82 FR 21711	Final Approval
11/14/2017	OREGON	Oakridge, OR	82 FR 52683	Proposed Approval
02/08/2018	OREGON	Oakridge, OR	83 FR 5537	Final Approval
07/18/2018	IDAHO	Logan, UT-ID	83 FR 33886	Proposed Approval
07/18/2018	UTAH	Logan, UT-ID	83 FR 33886	Proposed Approval
10/19/2018	IDAHO	Logan, UT-ID	83 FR 52983	Final Approval
10/19/2018	UTAH	Logan, UT-ID	83 FR 52983	Final Approval
02/12/2019	UTAH	Provo, UT	84 FR 3373	Proposed Approval
04/10/2019	UTAH	Provo, UT	84 FR 14267	Final Approval
04/25/2019	ARIZONA	West Central Pinal, AZ	84 FR 17368	Proposed Approval
06/05/2019	UTAH	Salt Lake City, UT	84 FR 26053	Proposed Approval
09/27/2019	UTAH	Salt Lake City, UT	84 FR 51055	Final Approval
10/03/2019	ARIZONA	West Central Pinal, AZ	84 FR 52766	Final Approval
06/08/2020	UTAH	Provo, UT	85 FR 35033	Proposed Approval
06/08/2020	UTAH	Salt Lake City, UT	85 FR 35033	Proposed Approval
11/17/2020	UTAH	Provo, UT	85 FR 73229	Final Approval
11/17/2020	UTAH	Salt Lake City, UT	85 FR 73229	Final Approval
11/25/2024	CALIFORNIA	Los Angeles-South Coast Air Basin, CA	89 FR 92873	Proposed Approval
06/03/2025	CALIFORNIA	Los Angeles-South Coast Air Basin, CA	90 FR 23443	Final Approval
CORRECTION/CLARIFICATION
02/11/2015	PENNSYLVANIA	Harrisburg-Lebanon-Carlisle-York, PA	80 FR 7540	Final Approval
04/28/2015	PENNSYLVANIA	Harrisburg-Lebanon-Carlisle-York, PA	80 FR 23449	Final Approval
07/07/2020	UTAH	Salt Lake City, UT	85 FR 40618	Proposed Approval
08/08/2025	PENNSYLVANIA	Liberty-Clairton, PA	90 FR 38406	Final Approval
DESIGNATION TO NONATTAINMENT
02/03/2011	ARIZONA	West Central Pinal, AZ	76 FR 6056	Final Approval
EXTENSION OF COMMENT PERIOD
05/23/2012	WISCONSIN	Milwaukee-Racine, WI	77 FR 30453	Proposed Approval
06/24/2019	UTAH	Salt Lake City, UT	84 FR 29455	Proposed Approval
FAILURE TO ATTAIN BY ATTAINMENT DATE
12/16/2016	ALASKA	Fairbanks, AK	81 FR 91088	Proposed Approval
12/16/2016	IDAHO	Logan, UT-ID	81 FR 91088	Proposed Approval
12/16/2016	UTAH	Logan, UT-ID	81 FR 91088	Proposed Approval
12/16/2016	UTAH	Provo, UT	81 FR 91088	Proposed Approval
12/16/2016	UTAH	Salt Lake City, UT	81 FR 91088	Proposed Approval
05/10/2017	ALASKA	Fairbanks, AK	82 FR 21711	Final Approval
05/10/2017	UTAH	Provo, UT	82 FR 21711	Final Approval
05/10/2017	UTAH	Salt Lake City, UT	82 FR 21711	Final Approval
05/19/2020	ALASKA	Fairbanks, AK	85 FR 29879	Proposed Approval
07/10/2020	CALIFORNIA	Los Angeles-South Coast Air Basin, CA	85 FR 41479	Proposed Approval
09/02/2020	ALASKA	Fairbanks, AK	85 FR 54509	Final Approval
09/16/2020	CALIFORNIA	Los Angeles-South Coast Air Basin, CA	85 FR 57733	Final Approval
REDESIGNATION TO MAINTENANCE
11/10/2011	ALABAMA	Birmingham, AL	76 FR 70091	Proposed Approval
01/25/2013	ALABAMA	Birmingham, AL	78 FR 5306	Final Approval
06/27/2013	NEW JERSEY	New York-N. New Jersey-Long Island, NY-NJ-CT	78 FR 38648	Proposed Approval
06/27/2013	NEW JERSEY	Philadelphia-Wilmington, PA-NJ-DE	78 FR 38648	Proposed Approval
07/02/2013	MICHIGAN	Detroit-Ann Arbor, MI	78 FR 39654	Proposed Approval
07/11/2013	OHIO	Steubenville-Weirton, OH-WV	78 FR 41752	Proposed Approval
07/19/2013	CONNECTICUT	New York-N. New Jersey-Long Island, NY-NJ-CT	78 FR 43096	Proposed Approval
07/26/2013	OHIO	Cleveland-Akron-Lorain, OH	78 FR 45116	Proposed Approval
08/07/2013	OHIO	Canton-Massillon, OH	78 FR 48087	Proposed Approval
08/29/2013	MICHIGAN	Detroit-Ann Arbor, MI	78 FR 53272	Final Approval
09/04/2013	NEW JERSEY	New York-N. New Jersey-Long Island, NY-NJ-CT	78 FR 54396	Final Approval
09/04/2013	NEW JERSEY	Philadelphia-Wilmington, PA-NJ-DE	78 FR 54396	Final Approval
09/18/2013	OHIO	Cleveland-Akron-Lorain, OH	78 FR 57270	Final Approval
09/18/2013	OHIO	Steubenville-Weirton, OH-WV	78 FR 57273	Final Approval
09/24/2013	CONNECTICUT	New York-N. New Jersey-Long Island, NY-NJ-CT	78 FR 58467	Final Approval
10/22/2013	OHIO	Canton-Massillon, OH	78 FR 62459	Final Approval
12/09/2013	WEST VIRGINIA	Steubenville-Weirton, OH-WV	78 FR 73769	Proposed Approval
01/24/2014	WEST VIRGINIA	Charleston, WV	79 FR 4121	Proposed Approval
02/11/2014	NEW YORK	New York-N. New Jersey-Long Island, NY-NJ-CT	79 FR 8133	Proposed Approval
02/18/2014	WISCONSIN	Milwaukee-Racine, WI	79 FR 9134	Proposed Approval
03/18/2014	WEST VIRGINIA	Steubenville-Weirton, OH-WV	79 FR 15019	Final Approval
03/31/2014	WEST VIRGINIA	Charleston, WV	79 FR 17884	Final Approval
04/11/2014	DELAWARE	Philadelphia-Wilmington, PA-NJ-DE	79 FR 20139	Proposed Approval
04/18/2014	NEW YORK	New York-N. New Jersey-Long Island, NY-NJ-CT	79 FR 21857	Final Approval
04/22/2014	WISCONSIN	Milwaukee-Racine, WI	79 FR 22415	Final Approval
08/05/2014	DELAWARE	Philadelphia-Wilmington, PA-NJ-DE	79 FR 45350	Final Approval
10/15/2014	CALIFORNIA	Yuba City-Marysville, CA	79 FR 61822	Proposed Approval
10/17/2014	PENNSYLVANIA	Harrisburg-Lebanon-Carlisle-York, PA	79 FR 62389	Proposed Approval
12/08/2014	PENNSYLVANIA	Harrisburg-Lebanon-Carlisle-York, PA	79 FR 72552	Final Approval
12/09/2014	CALIFORNIA	Yuba City-Marysville, CA	79 FR 72981	Final Approval
12/11/2014	WASHINGTON	Tacoma, WA	79 FR 73525	Proposed Approval
02/04/2015	PENNSYLVANIA	Allentown, PA	80 FR 6019	Proposed Approval
02/10/2015	WASHINGTON	Tacoma, WA	80 FR 7347	Final Approval
02/17/2015	PENNSYLVANIA	Philadelphia-Wilmington, PA-NJ-DE	80 FR 8254	Proposed Approval
04/13/2015	PENNSYLVANIA	Allentown, PA	80 FR 19548	Final Approval
04/21/2015	PENNSYLVANIA	Philadelphia-Wilmington, PA-NJ-DE	80 FR 22112	Final Approval
04/23/2015	PENNSYLVANIA	Johnstown, PA	80 FR 22672	Proposed Approval
05/01/2015	PENNSYLVANIA	Lancaster, PA	80 FR 24874	Proposed Approval
05/20/2015	PENNSYLVANIA	Pittsburgh-Beaver Valley, PA	80 FR 28906	Proposed Approval
07/16/2015	PENNSYLVANIA	Johnstown, PA	80 FR 42046	Final Approval
07/16/2015	PENNSYLVANIA	Lancaster, PA	80 FR 42050	Final Approval
10/02/2015	PENNSYLVANIA	Pittsburgh-Beaver Valley, PA	80 FR 59624	Final Approval
05/30/2017	TENNESSEE	Knoxville-Sevierville-La Follette, TN	82 FR 24621	Proposed Approval
08/28/2017	TENNESSEE	Knoxville-Sevierville-La Follette, TN	82 FR 40718	Final Approval
05/09/2018	CALIFORNIA	Chico, CA	83 FR 21238	Proposed Approval
07/11/2018	CALIFORNIA	Chico, CA	83 FR 32064	Final Approval
11/06/2020	UTAH	Provo, UT	85 FR 71023	Proposed Approval
11/06/2020	UTAH	Salt Lake City, UT	85 FR 71023	Proposed Approval
02/17/2021	IDAHO	Logan, UT-ID	86 FR 9884	Proposed Approval
02/26/2021	UTAH	Logan, UT-ID	86 FR 11694	Proposed Approval
04/06/2021	UTAH	Provo, UT	86 FR 17762	Reopening of Public Comment Period
04/06/2021	UTAH	Salt Lake City, UT	86 FR 17762	Reopening of Public Comment Period
05/19/2021	UTAH	Logan, UT-ID	86 FR 27035	Final Approval
05/21/2021	IDAHO	Logan, UT-ID	86 FR 27532	Final Approval
03/02/2022	ARIZONA	Nogales, AZ	87 FR 11664	Proposed Approval
05/05/2022	OREGON	Oakridge, OR	87 FR 26710	Proposed Approval
08/15/2022	ARIZONA	Nogales, AZ	87 FR 49997	Final Approval
08/22/2022	OREGON	Oakridge, OR	87 FR 51262	Final Approval
04/07/2025	PENNSYLVANIA	Liberty-Clairton, PA	90 FR 14939	Proposed Approval
07/24/2025	PENNSYLVANIA	Liberty-Clairton, PA	90 FR 34770	Final Approval
11/19/2025	UTAH	Provo, UT	90 FR 51999	Final Approval
11/19/2025	UTAH	Salt Lake City, UT	90 FR 51999	Final Approval