# Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; Interstate Transport Requirements for the 2010 1-Hour Sulfur Dioxide Standard
> **Rule** · Direct final rule. · Published 2017-10-18 · Effective 2017-12-18 · 82 FR 48439
## Document
- **Document number:** 2017-22253
- **Category:** air-emissions
- **Federal Register citation:** 82 FR 48439
- **CFR reference:** 40 CFR 52
- **Publication date:** 2017-10-18
- **Effective date:** 2017-12-18
- **State:** DC
- **EPA docket:** EPA-R03-OAR-2014-0701
## Abstract

The Environmental Protection Agency (EPA) is taking direct final action to approve a state implementation plan (SIP) revision submitted by the District of Columbia (the District). This revision pertains to the infrastructure requirement for interstate transport of pollution with respect to the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) national ambient air quality standards (NAAQS). EPA is approving this revision in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/10/18/2017-22253/approval-and-promulgation-of-air-quality-implementation-plans-district-of-columbia-interstate)
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