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EPA/RODENVER RIN: 2008-AA04 Publication ID: Fall 2023 
Title: Federal Implementation Plan to Establish a Market for Ozone-Precursor Emissions Reduction Credits From Existing Sources on Indian Country Lands Within the Uinta Basin Ozone Nonattainment Area 

The EPA designated portions of the physiographic region known as the “Uinta Basin” nonattainment for the 2015 Ozone NAAQS, effective August 3, 2018. The purpose of this Clean Air Act (CAA) Federal Implementation Plan (FIP) applicable to sources on Indian country lands within the Uintah and Ouray Indian Reservation (U&O Reservation) is to establish a bank of ozone-precursor emission reduction credits (ERCs) that may be generated and used for several air quality planning purposes. This FIP would also establish authority for the EPA or the Ute Indian Tribe, as applicable, to issue permits to yet unpermitted true minor sources of ozone precursor emissions to generate emission reduction credits. Specifically, the emission reduction credits could be utilized in achievement of the ozone National Ambient Air Quality Standard (NAAQS), general conformity demonstrations, and new source review (NSR) permitting related to development of new ozone-precursor emissions sources in the Uinta Basin Ozone Nonattainment Area in Utah.

Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 49   
Legal Authority: 42 U.S.C. 7601 to 7627   
Legal Deadline:  None
Action Date FR Cite
ANPRM  05/24/2019  84 FR 24064   
NPRM  07/00/2024 
Final Rule  04/00/2025 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Energy Effects: Statement of Energy Effects planned as required by Executive Order 13211.  Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Aaron Zull
Environmental Protection Agency
Regional Office Denver
USEPA Region 8, 1595 Wynkoop Street,
Denver, CO 80202
Phone:303 312-6157