# 2025-15992: Washington Air Rules Receive Reference Refresh

2025-15992, Air Plan Approval; WA; Update to Materials Incorporated by Reference, is a Federal Register rule from Environmental Protection Agency published 2025-08-21 (as of 2026-06-08).

- Canonical: https://policyrisk.com/federal-register/2025-15992
- As of: 2026-06-08
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-15992
- Title: Air Plan Approval; WA; Update to Materials Incorporated by Reference
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 90 FR 40738
- 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

Washington Air Rules Receive Reference Refresh

## Summary

The EPA is updating the official list of rules that Washington State follows to keep the air clean. This update affects people and businesses in Washington by making sure the latest approved rules are easy to find and check. No new costs or deadlines are involved—just a fresh, clear reference for everyone to use.

## Abstract

The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the Washington State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by Washington and approved by the EPA. This update affects the materials that are available for public inspection at the National Archives and Records Administration (NARA) and the EPA Regional Office.

## Effects PRIA read

- Easier access to WA air-plan rules: benefit, low. If you live or run a business in Washington State, the EPA updated the official list of rules that make up Washington’s State Implementation Plan so the latest approved rules are easier to find and check. The updated materials are available for public inspection at the National Archives and Records…
- No new costs or deadlines: benefit, low. The update only refreshes which previously submitted and EPA‑approved Washington rules are listed by reference; it does not create new costs, deadlines, or regulatory requirements. If you are a Washington resident or business, your compliance obligations and costs remain unchanged.

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## Sources
- [2025-15992 on federalregister.gov](https://www.federalregister.gov/documents/2025/08/21/2025-15992/air-plan-approval-wa-update-to-materials-incorporated-by-reference)
- [2025-15992 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-08-21/pdf/2025-15992.pdf)

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- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-15992 (as of 2026-06-08).