# Revisions to the California State Implementation Plan, Monterey Bay Unified Air Pollution Control District, Placer County Air Pollution Control District
> **Rule** · Direct final rule. · Published 2009-06-11 · Effective 2009-08-10 · 74 FR 27714
## Document
- **Document number:** E9-13481
- **Category:** air-emissions
- **Federal Register citation:** 74 FR 27714
- **CFR reference:** 40 CFR 52
- **Publication date:** 2009-06-11
- **Effective date:** 2009-08-10
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2009-0230
## Abstract

EPA is taking direct final action to approve revisions to the Monterey Bay Unified Air Pollution Control District (MBUAPCD) and Placer County Air Pollution Control District (PCAPCD) portions of the California State Implementation Plan (SIP). These revisions concern volatile organic compound (VOC) emissions from storage tanks and the operation of steam drive crude oil production wells. 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/2009/06/11/E9-13481/revisions-to-the-california-state-implementation-plan-monterey-bay-unified-air-pollution-control)
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