# Approval and Promulgation of Implementation Plans; Kentucky and Indiana: Approval of Revisions to 1-Hour Ozone Maintenance Plan for Louisville Area
> **Rule** · Final rule. · Published 2004-09-20 · Effective 2004-10-20 · 69 FR 56171
## Document
- **Document number:** 04-21062
- **Category:** air-emissions
- **Federal Register citation:** 69 FR 56171
- **CFR reference:** 40 CFR 52
- **Publication date:** 2004-09-20
- **Effective date:** 2004-10-20
- **State:** IN
- **EPA docket:** KY 146, 148-200419
## Abstract

The EPA is finalizing approval of the June 27, 2003, and June 26, 2003, revisions to the State implementation plans (SIPs) of the Commonwealth of Kentucky and the State of Indiana to revise the 2012 motor vehicle emission budgets (MVEBs) using MOBILE6 for the Louisville 1-hour ozone maintenance area. The Louisville maintenance area includes Jefferson County, Kentucky and portions of Bullitt and Oldham Counties in Kentucky; and Clark and Floyd counties in Indiana.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/09/20/04-21062/approval-and-promulgation-of-implementation-plans-kentucky-and-indiana-approval-of-revisions-to)
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