# Approval and Promulgation of Implementation Plans; State of Iowa
> **Rule** · Direct final rule. · Published 1998-02-02 · Effective 1998-04-03 · 63 FR 5268
## Document
- **Document number:** 98-2493
- **Category:** other
- **Federal Register citation:** 63 FR 5268
- **CFR reference:** 40 CFR 52
- **Publication date:** 1998-02-02
- **Effective date:** 1998-04-03
- **State:** IA
- **EPA docket:** IA 037-1037a
## Abstract

This action approves revisions of the Iowa State Implementation Plan regarding two local air pollution control agencies. The scope of this action includes updated regulations for the Polk County Public Works Department (PCPWD) and Linn County Health Department (LCHD). These revisions include provisions such as definitions, permit exemptions, visible opacity and open burning.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/02/02/98-2493/approval-and-promulgation-of-implementation-plans-state-of-iowa)
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