# Revisions to the Arizona State Implementation Plan, Maricopa County Environmental Services Department
> **Rule** · Direct final rule. · Published 2007-05-08 · Effective 2007-07-09 · 72 FR 25973
## Document
- **Document number:** E7-8689
- **Category:** air-emissions
- **Federal Register citation:** 72 FR 25973
- **CFR reference:** 40 CFR 52
- **Publication date:** 2007-05-08
- **Effective date:** 2007-07-09
- **State:** AZ
- **EPA docket:** EPA-R09-OAR-2006-0827
## Abstract

EPA is taking direct final action to approve a revision to the Maricopa County Environmental Services Department (MCESD) portion of the Arizona State Implementation Plan (SIP). This revision concerns particulate matter (PM-10) emissions from open burning. We are approving a local rule under the Clean Air Act as amended in 1990 (CAA or the Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/05/08/E7-8689/revisions-to-the-arizona-state-implementation-plan-maricopa-county-environmental-services-department)
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