# Approval and Promulgation of Implementation Plans; State of Missouri
> **Rule** · Direct final rule. · Published 2006-06-12 · Effective 2006-08-11 · 71 FR 33622
## Document
- **Document number:** 06-5250
- **Category:** other
- **Federal Register citation:** 71 FR 33622
- **CFR reference:** 40 CFR 52
- **Publication date:** 2006-06-12
- **Effective date:** 2006-08-11
- **State:** MO
- **EPA docket:** EPA-R07-OAR-2006-0462
## Abstract

EPA is approving a revision to the Missouri State Implementation Plan (SIP). This approval pertains to revisions to the state's rule which restricts emissions from specific Missouri lead smelter-refinery installations. The effect of this approval is to remove duplication between two SIP-approved documents, and does not affect the stringency of the requirements.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/06/12/06-5250/approval-and-promulgation-of-implementation-plans-state-of-missouri)
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