# Approval and Promulgation of Air Quality Implementation Plans; Ohio; Redesignation of the Steubenville-Weirton Area to Attainment of the 1997 Annual Standard and the 2006 24-Hour Standard for Fine Particulate Matter > **Rule** · Final rule. · Published 2013-09-18 · Effective 2013-09-18 · 78 FR 57273 ## Document - **Document number:** 2013-22623 - **Category:** air-emissions - **Federal Register citation:** 78 FR 57273 - **CFR reference:** 40 CFR 52 - **Publication date:** 2013-09-18 - **Effective date:** 2013-09-18 - **State:** OH - **EPA docket:** EPA-R05-OAR-2012-0337 and EPA-R05-OAR-2012-0462 ## Abstract EPA is redesignating under the Clean Air Act (CAA) the Ohio portion of the Steubenville-Weirton area (Jefferson County, OH and Brooke and Hancock Counties, WV) to attainment for the 1997 annual and 2006 24-hour national ambient air quality standards (NAAQS or standard) for fine particulate matter (PM2.5). On April 16, and May 31, 2012, the Ohio Environmental Protection Agency (OEPA) submitted a request for EPA to redesignate the Steubenville-Weirton Ohio nonattainment area. EPA determined that the Steubenville-Weirton area has attained the 1997 annual and 2006 24-hour PM2.5 standard, and proposed to approve Ohio's request to redesignate the area on July 11, 2013. EPA's final rulemaking involves several related actions. EPA is approving, as a revision to the Ohio state implementation plan (SIP), the state's plan for maintaining the 1997 annual and 2006 24-hour PM2.5 NAAQS in the area through 2025. EPA is making a finding of insignificance for Ohio's motor vehicle emissions of nitrogen oxides (NOX) and direct PM2.5 for the Steubenville-Weirton area for transportation conformity purposes. Therefore, as Ohio requested, EPA is redesignating the Ohio portion of the Steubenville-Weirton area to attainment for the 1997 PM2.5 annual and 2006 24-hour standards. ## Source - [Federal Register document](https://www.federalregister.gov/documents/2013/09/18/2013-22623/approval-and-promulgation-of-air-quality-implementation-plans-ohio-redesignation-of-the) --- *AI Analytics · CC0 1.0*