# Air Plan Approval; Massachusetts; Regional Haze Five-Year Progress Report State Implementation Plan
> **Rule** · Final rule. · Published 2019-03-29 · Effective 2019-04-29 · 84 FR 11885
## Document
- **Document number:** 2019-06015
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 11885
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-03-29
- **Effective date:** 2019-04-29
- **State:** MA
- **EPA docket:** EPA-R01-OAR-2018-0791
## Abstract

The Environmental Protection Agency (EPA) is approving Massachusetts' Regional Haze Five-Year Progress Report, submitted on February 9, 2018 as a revision to its State Implementation Plan (SIP). This SIP revision addresses requirements of the Clean Air Act (CAA) and EPA's rules that require states to submit periodic reports describing the progress toward reasonable progress goals (RPGs) established for regional haze and a determination of adequacy of the State's existing regional haze SIP. EPA is approving Massachusetts' February 9, 2018 SIP submittal on the basis that it addresses the progress report and adequacy determination requirements for the first implementation period for regional haze.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/03/29/2019-06015/air-plan-approval-massachusetts-regional-haze-five-year-progress-report-state-implementation-plan)
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