What is the designation process for the 8-hour ozone standard??
By July 15, 2003, State governors and tribal leaders examined the latest ozone air quality data, and submitted a recommendation to EPA on what areas are not meeting the 8-hour ozone standards. On April 15, 2004, EPA designated areas as “Unclassifiable/Attainment” or “Nonattainment” for the national ambient air quality standard for ozone. EPA will classify the nonattainment areas according to the severity of their ozone problems. There are five classes of nonattainment areas for ozone, ranging from marginal to severe.
