Air Plan Approval; Utah; Update to Materials Incorporated by Reference

What it does

The U.S. Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the Utah State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by Utah and approved by the EPA. In this final rule, the EPA is also notifying the public of corrections and clarifying changes in the Code of Federal Regulations (CFR) tables that identify material IBR into the Utah SIP. This update affects the materials that are available for public inspection at the National Archives and Records Administration (NARA) and the EPA Regional Office.

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:

40 CFR 52

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 248 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 action is effective on November 13, 2026.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Title 40 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register