EPA is taking the next step in the Clean Air Act process to implement the national air quality standards for ozone set in 2015. The Agency finds that most areas in the country meet the standards and is designating these areas “attainment/unclassifiable.”
Notice: Air Quality Designations for the 2015 Ozone National Ambient Air Quality Standards
See other area designations for the 2015 Ozone StandardsYou may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.