# Revisions to the California State Implementation Plan, Yolo-Solano Air Quality Management District
> **Rule** · Direct final rule. · Published 2012-04-18 · Effective 2012-06-18 · 77 FR 23133
## Document
- **Document number:** 2012-8947
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 23133
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-04-18
- **Effective date:** 2012-06-18
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2012-0180
## Abstract

EPA is taking direct final action to approve revisions to the Yolo-Solano Air Quality Management District (Yolo-Solano AQMD) portion of the California State Implementation Plan (SIP). These revisions concern particulate matter (PM) emissions from any source that emits visible air contaminants. We are approving and rescinding local rules that regulate these emission sources under the Clean Air Act as amended in 1990 (CAA or the Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/04/18/2012-8947/revisions-to-the-california-state-implementation-plan-yolo-solano-air-quality-management-district)
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