# Approval and Promulgation of Air Quality Implementation Plans; Indiana; Allen, Greene, Vanderburgh, Warrick, and Vigo Counties; 1997 8-Hour Ozone Maintenance Plan Revision to Approved Motor Vehicle Emissions Budgets
> **Rule** · Direct final rule. · Published 2014-02-25 · Effective 2014-04-28 · 79 FR 10385
## Document
- **Document number:** 2014-03170
- **Category:** air-emissions
- **Federal Register citation:** 79 FR 10385
- **CFR reference:** 40 CFR 52
- **Publication date:** 2014-02-25
- **Effective date:** 2014-04-28
- **State:** IN
- **EPA docket:** EPA-R05-OAR-2013-0414, EPA-R05-OAR-2013-0424, EPA-R05-OAR-2013-0425, EPA-R05-OAR-2013-0432
## Abstract

Under the Clean Air Act (CAA), the Environmental Protection Agency (EPA) is approving requests by Indiana to revise the 1997 8-hour ozone maintenance air quality state implementation plan (SIP) for Allen, Greene, Vanderburgh, Warrick, and Vigo Counties to replace onroad emissions inventories and motor vehicle emissions budgets (budgets) with inventories and budgets developed using EPA's Motor Vehicle Emissions Simulator (MOVES) emissions model. Indiana submitted the SIP revision requests for Allen, Vigo, Vanderburgh, and Warrick Counties on July 2, 2013, and submitted the SIP revision request for Greene County on July 8, 2013.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/02/25/2014-03170/approval-and-promulgation-of-air-quality-implementation-plans-indiana-allen-greene-vanderburgh)
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