# Revisions to the California State Implementation Plan, Monterey Bay Unified Air Pollution Control District
> **Rule** · Direct final rule. · Published 2012-12-10 · Effective 2013-02-08 · 77 FR 73322
## Document
- **Document number:** 2012-29532
- **Category:** air-emissions
- **Federal Register citation:** 77 FR 73322
- **CFR reference:** 40 CFR 52
- **Publication date:** 2012-12-10
- **Effective date:** 2013-02-08
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2012-0808
## Abstract

EPA is taking direct final action to approve revisions to the Monterey Bay Unified Air Pollution Control District (MBUAPCD) portion of the California State Implementation Plan (SIP). These revisions concern opacity standards related to multiple pollutants, including particulate matter (PM) emissions from several different types of sources, ranging from fugitive dust to gas turbines. We are approving a local rule that regulates these emission sources under the Clean Air Act (CAA or the Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/12/10/2012-29532/revisions-to-the-california-state-implementation-plan-monterey-bay-unified-air-pollution-control)
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