20230925 17014900 1.0 TRUE Nonattainment Areas Counties in North Central Texas in Non-Attainment of the National Ambient Air Quality Standards (NAAQS) for Ozone. 2008 and 2015 standards are both currently in effect. For more information, see: - www.nctcog.org/ozone - www.epa.gov/green-book/green-book-8-hour-ozone-2008-area-information - www.epa.gov/green-book/green-book-8-hour-ozone-2015-area-information NCTCOG Transportation