# Disapproval and Promulgation of Air Quality Implementation Plans; Montana; Revisions to the Administrative Rules of Montana-Air Quality, Subchapter 7, Exclusion for De Minimis Changes
> **Rule** · Final rule. · Published 2012-02-13 · 77 FR 7531
## Document
- **Document number:** 2012-3245
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 7531
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-02-13
- **State:** MT
- **EPA docket:** EPA-R08-OAR-2011-0100
## Abstract

EPA is taking final action to partially approve and partially disapprove State Implementation Plan (SIP) revisions and new rules as submitted by the State of Montana on June 25, 2010 and May 28, 2003. The revisions contain new rules in Subchapter 7 (Permit, Construction, and Operation of Air Contaminant Sources) that pertain to the issuance of Montana air quality permits, in addition to other minor administrative changes to other subchapters of the Administrative Rules of Montana (ARM). In this action, EPA is approving those portions of the rules that are approvable and disapproving those portions of the rules that are inconsistent with the Clean Air Act (CAA). This action is being taken under section 110 of the CAA.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/02/13/2012-3245/disapproval-and-promulgation-of-air-quality-implementation-plans-montana-revisions-to-the)
---
*AI Analytics · CC0 1.0*