# Approval and Promulgation of Air Quality Implementation Plans; Alabama Update to Materials Incorporated by Reference
> **Rule** · Final rule; notice of administrative change. · Published 2003-02-03 · Effective 2003-02-03 · 68 FR 5221
## Document
- **Document number:** 03-2172
- **Category:** air-emissions
- **Federal Register citation:** 68 FR 5221
- **CFR reference:** 40 CFR 52
- **Publication date:** 2003-02-03
- **Effective date:** 2003-02-03
- **State:** AL
- **EPA docket:** AL-200311
## Abstract

EPA is updating the materials submitted by Alabama that are incorporated by reference (IBR) into the State implementation plan (SIP). The regulations affected by this update have been previously submitted by the State agency and approved by EPA. This update affects the SIP materials that are available for public inspection at the Office of the Federal Register (OFR), Office of Air and Radiation Docket and Information Center, and the Regional Office.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/02/03/03-2172/approval-and-promulgation-of-air-quality-implementation-plans-alabama-update-to-materials)
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