Final rule · 2026-23121

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

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.