# Approval of Arizona Air Plan Revision; San Manuel, Arizona; Second 10-Year Sulfur Dioxide Maintenance Plan
> **Rule** · Final rule. · Published 2017-12-15 · Effective 2018-01-16 · 82 FR 59521
## Document
- **Document number:** 2017-26971
- **Category:** air-emissions
- **Federal Register citation:** 82 FR 59521
- **CFR reference:** 40 CFR 52
- **Publication date:** 2017-12-15
- **Effective date:** 2018-01-16
- **State:** AZ
- **EPA docket:** EPA-R09-OAR-2017-0377
## Abstract

The Environmental Protection Agency (EPA) is taking final rulemaking action to approve, as part of the State Implementation Plan (SIP) for the State of Arizona, the second 10-year maintenance plan for the San Manuel area for the 1971 National Ambient Air Quality Standards ("standards") for sulfur dioxide (SO<INF>2</INF>).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/12/15/2017-26971/approval-of-arizona-air-plan-revision-san-manuel-arizona-second-10-year-sulfur-dioxide-maintenance)
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