On August 7, 2019, EPA took final actions for 11 nonattainment areas classified as ‘Moderate’ for the 2008 ozone National Ambient Air Quality Standard. These areas were required to attain the standard by July 20, 2018.
This final action reclassifies the Dallas/Ft. Worth and Houston areas to a ‘Serious’ classification for the 2008 Ozone NAAQS. Note that this reclassification action does not constitute a conformity trigger.