# Air Plan Approval; WA; Updates to Source-Category Regulations
> **Rule** · Final rule. · Published 2020-02-26 · Effective 2020-03-27 · 85 FR 10983
## Document
- **Document number:** 2020-03250
- **Category:** air-emissions
- **Federal Register citation:** 85 FR 10983
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-02-26
- **Effective date:** 2020-03-27
- **EPA docket:** EPA-R10-OAR-2019-0636: FRL-10005-19-Region 10
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to the Washington State Implementation Plan (SIP) that were submitted by the Department of Ecology (Ecology). In 1991, Ecology established source-category regulations for kraft pulp mills, sulfite pulping mills, and primary aluminum plants. These source-category regulations contain requirements specific to these types of facilities. However, the source-category regulations also rely upon cross- references to the general air quality regulations to implement program elements such as new source review permitting. Since 1991, many of the cross-references to the general regulations for air pollution sources have changed. The EPA is approving a revision to the SIP updating the cross-references and other miscellaneous changes.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/02/26/2020-03250/air-plan-approval-wa-updates-to-source-category-regulations)
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