# Promulgation of Air Quality Implementation Plans; State of Arkansas; Regional Haze Federal Implementation Plan Revisions; Withdrawal of Portions of the Federal Implementation Plan
> **Rule** · Final rule. · Published 2019-09-27 · Effective 2019-10-28 · 84 FR 51056
## Document
- **Document number:** 2019-19877
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 51056
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-09-27
- **Effective date:** 2019-10-28
- **State:** AR
- **EPA docket:** EPA-R06-OAR-2015-0189
## Abstract

The Environmental Protection Agency (EPA) is amending a Federal Implementation Plan (FIP) that addresses regional haze for the first planning period for Arkansas as it applies to the best available retrofit technology (BART) requirements for sulfur dioxide (SO<INF>2</INF>) and particulate matter (PM) for seven electric generating units (EGUs) in Arkansas and the SO<INF>2</INF> requirements under the reasonable progress provisions. These portions of the FIP will be replaced by the portions of a revision to the Arkansas State Implementation Plan (SIP) that we are taking final action to approve in a separate rulemaking that is published elsewhere in this issue of the Federal Register.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/09/27/2019-19877/promulgation-of-air-quality-implementation-plans-state-of-arkansas-regional-haze-federal)
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