# 2026-16511: Coachella Valley Hits Old Ozone Target, EPA Confirms

2026-16511, Determination of Attainment by the Attainment Date; 1997 Ozone Standards; California; Coachella Valley, is a Federal Register rule from Environmental Protection Agency published 2026-08-13, effective 2026-09-14; PRIA reads it as touching household money (as of 2026-08-20).

- Canonical: https://policyrisk.com/federal-register/2026-16511
- As of: 2026-08-20
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-16511
- Title: Determination of Attainment by the Attainment Date; 1997 Ozone Standards; California; Coachella Valley
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 91 FR 52241
- Published: 2026-08-13
- Effective: 2026-09-14
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-08-20

## In one line

Coachella Valley Hits Old Ozone Target, EPA Confirms

## Summary

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.

## Effects PRIA read

- Coachella Valley 1997 Ozone Attainment: benefit, medium. The EPA determined that Riverside County (Coachella Valley) attained the 1997 ozone standard (0.08 ppm) by the June 15, 2025 attainment date, based on quality-assured monitoring data from 2022–2024 (design value 0.084 ppm). This final rule is effective September 14, 2026, and the attainment finding…
- No Immediate Permit-Class Change for Tribal Areas: mixed, low. The EPA states that this attainment determination does not change the nonattainment classification for any Tribal or non-Tribal parts of the Coachella Valley for the 1997 ozone NAAQS. The agency notes that only a future redesignation (which has not been requested) would change major source permitti…

## Related documents

- [2026-22082](https://policyrisk.com/federal-register/2026-22082): Additional Reconsideration Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sour…, 2026-10-29
- [2026-21155](https://policyrisk.com/federal-register/2026-21155): Renewable Fuel Standard (RFS) Program: Reallocation of Additional 2025 Small Refinery Exemptions, 2026-10-16
- [2026-20849](https://policyrisk.com/federal-register/2026-20849): Clean Water Act Hazardous Substance Facility Response Plans: Compliance Date Delay and Changes To Reflect Administration Policy, 2026-10-13
- [2026-19071](https://policyrisk.com/federal-register/2026-19071): Partial Repeal of the Carbon Pollution Standards for Fossil Fuel-Fired Electric Generating Units, 2026-09-17
- [2026-19072](https://policyrisk.com/federal-register/2026-19072): Rescission of the Greenhouse Gas Findings for Fossil Fuel-Fired Power Plants and Repeal of Regulations for Power Plant Greenhouse Gas Emiss…, 2026-09-17
- [2026-18317](https://policyrisk.com/federal-register/2026-18317): Updated Definition of “Waters of the United States”, 2026-09-09

## Sources
- [2026-16511 on federalregister.gov](https://www.federalregister.gov/documents/2026/08/13/2026-16511/determination-of-attainment-by-the-attainment-date-1997-ozone-standards-california-coachella-valley)
- [2026-16511 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-08-13/pdf/2026-16511.pdf)

## Related
- [Previous: 2026-16510, Determination of Attainment by the Attainment Date and Clean Data Determination…](https://policyrisk.com/federal-register/2026-16510)
- [Next: 2026-16512, Airworthiness Directives; BRP-Rotax GmbH & Co KG (Formerly BRP-Powertrain GMBH…](https://policyrisk.com/federal-register/2026-16512)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-16511 (as of 2026-08-20).