PM-2.5 (2006) Clean Data Determination/Attainment Determinations For Areas with Current Nonattainment Status

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

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

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SERIOUS
Los Angeles-South Coast Air Basin, CA
Clean Data Determination
Proposed Approval	11/25/2024	89 FR 92873
Final Approval	06/03/2025	90 FR 23443	Effective: 07/03/2025
Provo, UT
Clean Data Determination
Proposed Approval	02/12/2019	84 FR 3373
Final Approval	04/10/2019	84 FR 14267	Effective: 05/10/2019
Determination of Attainment by Attainment Date
Proposed Approval	06/08/2020	85 FR 35033
Final Approval	11/17/2020	85 FR 73229	Effective: 12/17/2020
Salt Lake City, UT
Clean Data Determination
Proposed Approval	06/05/2019	84 FR 26053
Final Approval	09/27/2019	84 FR 51055	Effective: 10/28/2019
Determination of Attainment by Attainment Date
Proposed Approval	06/08/2020	85 FR 35033
Final Approval	11/17/2020	85 FR 73229	Effective: 12/17/2020
MODERATE
Imperial County, CA
Determination of Attainment by Attainment Date
Proposed Approval	12/16/2016	81 FR 91088
Clean Data Determination
Proposed Approval	03/13/2017	82 FR 13413
Direct Final	03/13/2017	82 FR 13392	Effective: 05/12/2017
Determination of Attainment by Attainment Date
Final Approval	05/10/2017	82 FR 21711	Effective: 06/09/2017
Klamath Falls, OR
Both Clean Data Determination and Determination of Attainment by Attainment Date
Proposed Approval	04/13/2016	81 FR 21814
Final Approval	06/06/2016	81 FR 36176	Effective: 07/06/2016
Sacramento, CA
Clean Data Determination
Proposed Approval	10/26/2012	77 FR 65346
Final Approval	07/15/2013	78 FR 42018	Effective: 08/14/2013
Determination of Attainment by Attainment Date
Proposed Approval	12/16/2016	81 FR 91088
Final Approval	05/10/2017	82 FR 21711	Effective: 06/09/2017
San Francisco Bay Area, CA
Clean Data Determination
Proposed Approval	10/29/2012	77 FR 65521
Final Approval	01/09/2013	78 FR 1760	Effective: 02/08/2013
Determination of Attainment by Attainment Date
Proposed Approval	12/16/2016	81 FR 91088
Final Approval	05/10/2017	82 FR 21711	Effective: 06/09/2017
West Central Pinal, AZ
Clean Data Determination
Proposed Approval	07/12/2013	78 FR 41901
Final Approval	09/04/2013	78 FR 54394	Effective: 10/04/2013
Determination of Attainment by Attainment Date
Proposed Approval	04/25/2019	84 FR 17368
Final Approval	10/03/2019	84 FR 52766	Effective: 11/04/2019

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