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Recent Updates: Federal Register Notices Published or Effective After June 30, 2026
Recent Updates: Federal Register Notices Published or Effective After June 30, 2026
Data is current as of June 30, 2026
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) | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (DE) |
| Boundary Change | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (DE) |
| Clean Data Determination/Attainment Determination | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (MD) |
| Boundary Change | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (MD) |
| Clean Data Determination/Attainment Determination | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| 8-Hour Ozone (2008) | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (DE) |
| Boundary Change | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (DE) |
| Clean Data Determination/Attainment Determination | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (MD) |
| Boundary Change | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| 06/04/2026 | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (MD) |
| Clean Data Determination/Attainment Determination | |
| Final Approval | |
| Effective: 07/06/2026 | |
| 91 FR 33610 | |
| PM-2.5 (2006) | |
| 06/11/2026 | San Joaquin Valley, CA (CA) |
| Failure to Attain by Attainment Date | |
| Final Approval | |
| Effective: 07/13/2026 | |
| 91 FR 35418 | |
| 06/11/2026 | San Joaquin Valley, CA (CA) |
| Attainment Date Extension Denied | |
| Final Approval | |
| Effective: 07/13/2026 | |
| 91 FR 35418 | |
| 06/11/2026 | San Joaquin Valley, CA (CA) |
| Correction/Clarification | |
| Final Approval | |
| Effective: 07/13/2026 | |
| 91 FR 35418 | |
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