# Approval and Promulgation of Implementation Plans; Washington: Interstate Transport of Ozone
> **Rule** · Final rule. · Published 2015-12-15 · Effective 2016-01-14 · 80 FR 77578
## Document
- **Document number:** 2015-31460
- **Category:** air-emissions
- **Federal Register citation:** 80 FR 77578
- **CFR reference:** 40 CFR 52
- **Publication date:** 2015-12-15
- **Effective date:** 2016-01-14
- **State:** WA
- **EPA docket:** EPA-R10-OAR-2015-0334
## Abstract

The Clean Air Act (CAA) requires each State Implementation Plan (SIP) to contain adequate provisions prohibiting emissions that will have certain adverse air quality effects in other states. On May 11, 2015, the State of Washington made a submittal to the Environmental Protection Agency (EPA) to address these requirements. The EPA is approving the submittal as meeting the requirement that each SIP contain adequate provisions to prohibit emissions that will contribute significantly to nonattainment or interfere with maintenance of the 2008 ozone National Ambient Air Quality Standard (NAAQS) in any other state.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/12/15/2015-31460/approval-and-promulgation-of-implementation-plans-washington-interstate-transport-of-ozone)
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