# 2025-15991: Klamath Falls Air Plan Gets EPA Nod

2025-15991, Adequacy Status of the Klamath Falls, Oregon Submitted 2006 24-Hour PM2.5 NAAQS Redesignation Request and Maintenance Plan Budgets for Transportation Conformity Purposes, is a Federal Register rule from Environmental Protection Agency published 2025-08-21 (as of 2026-06-08).

- Canonical: https://policyrisk.com/federal-register/2025-15991
- As of: 2026-06-08
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-15991
- Title: Adequacy Status of the Klamath Falls, Oregon Submitted 2006 24-Hour PM2.5 NAAQS Redesignation Request and Maintenance Plan Budgets for Transportation Conformity Purposes
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 90 FR 40737
- Published: 2025-08-21
- Effective: unknown
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-06-08

## In one line

Klamath Falls Air Plan Gets EPA Nod

## Summary

Great news for Klamath Falls, Oregon! The EPA says the city’s plan to keep air clean meets the rules for vehicle pollution limits. Starting now, local transportation projects must follow these new pollution budgets to keep the air fresh and safe.

## Abstract

The EPA is notifying the public that we have found the motor vehicle emissions budgets for the Klamath Falls, Oregon 2006 24-hour fine particulate matter standard nonattainment area adequate for transportation conformity purposes. The budgets were submitted on August 20, 2024, as part of Oregon's Klamath Falls Redesignation Request and Maintenance Plan. As a result of our finding, the Klamath Falls area must use these budgets for future transportation conformity determinations.

## Effects PRIA read

- Klamath Falls Must Use Vehicle Emission Budgets: benefit, low. The EPA found the motor vehicle emissions budgets for the Klamath Falls, Oregon 2006 24-hour PM2.5 standard area adequate for transportation conformity. These budgets were submitted on August 20, 2024, and the Klamath Falls area must use them for future transportation conformity determinations.

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## Sources
- [2025-15991 on federalregister.gov](https://www.federalregister.gov/documents/2025/08/21/2025-15991/adequacy-status-of-the-klamath-falls-oregon-submitted-2006-24-hour-pm25-naaqs-redesignation-request)
- [2025-15991 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-08-21/pdf/2025-15991.pdf)

## Related
- [Previous: 2025-15990, Determination of Attainment by the Attainment Date; 2008 8-Hour Ozone Standards…](https://policyrisk.com/federal-register/2025-15990)
- [Next: 2025-15992, Air Plan Approval; WA; Update to Materials Incorporated by Reference](https://policyrisk.com/federal-register/2025-15992)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-15991 (as of 2026-06-08).