# Approval and Promulgation of Implementation Plans; North Dakota; Regional Haze State Implementation Plan; Federal Implementation Plan for Interstate Transport of Pollution Affecting Visibility and Regional Haze
> **Rule** · Final rule. · Published 2012-04-06 · Effective 2012-05-07 · 77 FR 20894
## Document
- **Document number:** 2012-6586
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 20894
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-04-06
- **Effective date:** 2012-05-07
- **State:** ND
- **EPA docket:** EPA-R08-OAR-2010-0406
## Abstract

EPA is partially approving and partially disapproving a revision to the North Dakota State Implementation Plan (SIP) addressing regional haze submitted by the Governor of North Dakota on March 3, 2010, along with SIP Supplement No. 1 submitted on July 27, 2010, and part of SIP Amendment No. 1 submitted on July 28, 2011. These SIP revisions were submitted to address the requirements of the Clean Air Act (CAA or Act) and our rules that require states to prevent any future and remedy any existing man-made impairment of visibility in mandatory Class I areas caused by emissions of air pollutants from numerous sources located over a wide geographic area (also referred to as the "regional haze program"). EPA is promulgating a Federal Implementation Plan (FIP) to address the gaps in the plan resulting from our partial disapproval of North Dakota's Regional Haze (RH) SIP. In addition, EPA is disapproving a revision to the North Dakota SIP addressing the interstate transport of pollutants that the Governor submitted on April 6, 2009. We are disapproving it because it does not meet the Act's requirements concerning non-interference with programs to protect visibility in other states. To address this deficiency, we are promulgating a FIP.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/04/06/2012-6586/approval-and-promulgation-of-implementation-plans-north-dakota-regional-haze-state-implementation)
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