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This final rule established air quality designations in the United States (U.S.) for the 2012 primary annual fine particle (PM2.5) National Ambient Air Quality Standards (NAAQS) for five areas in Georgia and neighboring counties in Alabama and South Carolina. It also changed the initial designation of one area in Ohio, two areas in Pennsylvania, one area shared between Indiana and Kentucky, and one area shared between Kentucky and Ohio for the 2012 PM2.5 NAAQS. These states submitted complete, quality-assured, and certified air quality data for 2014, and based on that data the EPA finalized appropriate initial designations for these areas. Lastly, it made one minor technical amendment to correct an inadvertent error in the initial designation for a county in Pennsylvania with respect to the 2012 PM2.5 NAAQS.