# Revisions to the California State Implementation Plan, Yolo-Solano Air Quality Management District
> **Rule** · Direct final rule. · Published 2010-05-10 · Effective 2010-07-09 · 75 FR 25778
## Document
- **Document number:** 2010-10943
- **Category:** air-emissions
- **Federal Register citation:** 75 FR 25778
- **CFR reference:** 40 CFR 52
- **Publication date:** 2010-05-10
- **Effective date:** 2010-07-09
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2010-0286
## Abstract

EPA is taking direct final action to approve revisions to the Yolo-Solano Air Quality Management District (YSAQMD) portion of the California State Implementation Plan (SIP). These revisions concern oxides of nitrogen (NO<INF>x</INF>) emissions from natural gas-fired water heaters, small boilers and nitric acid production facilities. We are approving 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/2010/05/10/2010-10943/revisions-to-the-california-state-implementation-plan-yolo-solano-air-quality-management-district)
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