Adequacy Status of the Ohio Portion of the Huntington/Ashland Submitted Annual Fine Particulate Matter Maintenance Plan for Transportation Conformity Purposes

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In this notice, EPA is notifying the public that we have made insignificance findings through the transportation conformity adequacy process, under the Clean Air Act, for directly emitted fine particulate matter (PM 2.5 ) and oxides of nitrogen (NO X ) in the Ohio portion of the Huntington/Ashland WV-KY-OH area. Ohio submitted the insignificance findings with the redesignation and maintenance plan submittal on May 4, 2011. As a result of our findings, the Ohio portion of the Huntington/Ashland area is no longer required to perform a regional emissions analysis for either directly emitted PM 2.5 or NO X as part of future PM 2.5 conformity determinations for the 1997 annual PM 2.5 air quality standard.