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Recent Updates: Federal Register Notices Published or Effective After November 30, 2025
Recent Updates: Federal Register Notices Published or Effective After November 30, 2025
Data is current as of November 30, 2025
is displayed for notices published or effective within 30 days of the report "As of" date.
Federal Register Notices not in this Green Book will be available in reports in the next Green Book.
The "FR" links below will display Federal Register Notices from the Government Publishing Office (GPO) website.
| NAAQS / Publication Date | Area Name / Action / Status / Effective Date / FRN Link |
| 8-Hour Ozone (2015) | |
| 10/30/2025 | Mariposa County, CA (CA) |
| Clean Data Determination/Attainment Determination | |
| Final Approval | |
| Effective: 12/01/2025 | |
| 90 FR 48820 | |
| 11/18/2025 | Yuma, AZ (AZ) |
| Redesignation to Maintenance | |
| Final Approval | |
| Effective: 12/18/2025 | |
| 90 FR 51548 | |
| Lead (2008) | |
| 11/18/2025 | Saline County, KS (KS) |
| Redesignation to Maintenance | |
| Final Approval | |
| Effective: 12/18/2025 | |
| 90 FR 51551 | |
| PM-2.5 (2006) | |
| 11/19/2025 | Provo, UT (UT) |
| Redesignation to Maintenance | |
| Final Approval | |
| Effective: 12/19/2025 | |
| 90 FR 51999 | |
| 11/19/2025 | Salt Lake City, UT (UT) |
| Redesignation to Maintenance | |
| Final Approval | |
| Effective: 12/19/2025 | |
| 90 FR 51999 | |
| Sulfur Dioxide (2010) | |
| 11/18/2025 | Beaver, PA (PA) |
| Redesignation to Maintenance | |
| Final Approval | |
| Effective: 12/18/2025 | |
| 90 FR 51560 | |
| 11/18/2025 | Muscatine, IA (IA) |
| Redesignation to Maintenance | |
| Final Approval | |
| Effective: 12/18/2025 | |
| 90 FR 51554 | |
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