# Approval and Promulgation of Air Quality Implementation Plans; Ohio; Dayton-Springfield, Steubenville-Weirton, Toledo, and Parkersburg-Marietta; 1997 8-Hour Ozone Maintenance Plan Revision to Approved Motor Vehicle Emissions Budgets
> **Rule** · Direct final rule. · Published 2013-10-24 · 78 FR 63388
## Document
- **Document number:** 2013-24706
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 63388
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-10-24
- **State:** OH
- **EPA docket:** EPA-R05-OAR-2013-0136, EPA-R05-OAR-2013-0215, EPA-R05-OAR-2013-0344, EPA-R05-OAR-2013-0378
## Abstract

Under the Clean Air Act (CAA), EPA is approving requests by Ohio to revise the 1997 8-hour ozone maintenance air quality state implementation plan (SIP) for the Dayton-Springfield area, the Toledo area, and the Ohio portions of the Parkersburg-Marietta and Steubenville-Weirton, West Virginia-Ohio areas, 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. The Dayton-Springfield area consists of Clark, Greene, Miami, and Montgomery Counties. The Ohio portion of the Steubenville-Weirton, West Virginia-Ohio area consists of Jefferson County, Ohio. The Toledo area consists of Lucas and Wood Counties. The Ohio portion of the Parkersburg-Marietta, West Virginia-Ohio area consists of Washington County. Ohio submitted the SIP revision requests on the following dates: Dayton-Springfield on February 11, 2013; Steubenville-Weirton on March 15, 2013; Toledo on April 18, 2013; Parkersburg-Marietta on April 26, 2013.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/24/2013-24706/approval-and-promulgation-of-air-quality-implementation-plans-ohio-dayton-springfield)
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