# Revision to Approval of Application Submitted by Eastern Shoshone Tribe and Northern Arapaho Tribe for Treatment in a Similar Manner as a State Under the Clean Air Act
> **Rule** · Notification of final action. · Published 2019-03-05 · Effective 2019-02-25 · 84 FR 7823
## Document
- **Document number:** 2019-03865
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 7823
- **CFR reference:** 40 CFR 49
- **Publication date:** 2019-03-05
- **Effective date:** 2019-02-25
- **EPA docket:** EPA-R08-OAR-2019-0037
## Abstract

This document announces that the EPA Regional Administrator for Region 8 has revised the EPA's December 6, 2013 approval of an application submitted by the Northern Arapaho Tribe and Eastern Shoshone Tribe (Tribes) of the Wind River Indian Reservation for treatment in a similar manner as a state (TAS) pursuant to the Clean Air Act and the EPA's implementing regulations for purposes of certain Clean Air Act provisions. This revision is in accordance with a decision of the United States Court of Appeals for the Tenth Circuit holding that a 1905 Congressional Act diminished the Wind River Indian Reservation.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/03/05/2019-03865/revision-to-approval-of-application-submitted-by-eastern-shoshone-tribe-and-northern-arapaho-tribe)
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