Determination of Attainment by the Attainment Date; 1997 Ozone Standards; California; Coachella Valley
Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Aug. 13, 2026. Document 2026-16511. Updated Nov. 7, 2026.
- What it does
The Environmental Protection Agency (EPA) is taking final action to determine that the Riverside County (Coachella Valley), CA 1997 ozone "Extreme" nonattainment area attained the revoked 1997 ozone national ambient air quality standards (NAAQS) by its June 15, 2025 attainment date. This determination is based on quality-assured and certified ambient air quality monitoring data from 2022 through 2024.
The Environmental Protection Agency's summary, as published in the Federal Register.
- What changed in the regulation
1 part of Title 40 of the Code of Federal Regulations:
Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).
- Compared with
The Environmental Protection Agency has published 243 final rules in 2026 so far, compared with 263 in all of 2025.
Counted by the Tribune from Federal Register records since Jan. 1, 2025.
- What happens next and when
This rule is effective September 14, 2026.
The agency's dates, word for word.
The record as published
| Document number | 2026-16511 |
|---|---|
| Action | Final rule. |
| Agencies | Environmental Protection Agency |
| Published | Aug. 13, 2026 |
| Effective date | Sept. 14, 2026 |
| Docket | EPA-R09-OAR-2025-3127 |
Source: the Federal Register (public domain). The document in the Federal Register