# Approval and Promulgation of Implementation Plans; Colorado; Regional Haze 5-Year Progress Report State Implementation Plan
> **Rule** · Final rule. · Published 2019-09-11 · Effective 2019-10-11 · 84 FR 47884
## Document
- **Document number:** 2019-19547
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 47884
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-09-11
- **Effective date:** 2019-10-11
- **State:** CO
- **EPA docket:** EPA-R08-OAR-2019-0177
## Abstract

The Environmental Protection Agency (EPA) is finalizing approval of a State Implementation Plan (SIP) revision submitted by the State of Colorado through the Colorado Department of Public Health and Environment (CDPHE) on May 2, 2016. Colorado's May 2, 2016 SIP revision (Progress Report) addresses requirements of the Clean Air Act (CAA or Act) and the EPA's rules that require each state to submit periodic reports describing progress towards reasonable progress goals (RPGs) established for regional haze and a determination of the adequacy of the state's existing SIP addressing regional haze (regional haze plan). The EPA is finalizing approval of Colorado's determination that the State's regional haze plan is adequate to meet these RPGs for the first implementation period through 2018 and requires no substantive revision at this time.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/09/11/2019-19547/approval-and-promulgation-of-implementation-plans-colorado-regional-haze-5-year-progress-report)
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