# Air Plan Approval; Washington; Northwest Clean Air Agency
> **Rule** · Final rule. · Published 2020-06-15 · Effective 2020-07-15 · 85 FR 36154
## Document
- **Document number:** 2020-11237
- **Category:** other
- **Federal Register citation:** 85 FR 36154
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-06-15
- **Effective date:** 2020-07-15
- **State:** WA
- **EPA docket:** EPA-R10-OAR-2020-0108
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to the Washington State Implementation Plan (SIP) that were submitted by the Washington Department of Ecology (Ecology) in coordination with the Northwest Clean Air Agency (NWCAA). This revision updates certain NWCAA regulations currently in the SIP, removes obsolete regulations, and approves a subset of updated Ecology regulations to apply in NWCAA's jurisdiction.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/06/15/2020-11237/air-plan-approval-washington-northwest-clean-air-agency)
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