News "Oklahoma in Attainment of Current Ozone Standard," The Daily Ardmoreite – November 12, 2014Exit You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more. Oklahoma City area sign-up letter (PDF)(1 pg, 304 K, May 2012) Oklahoma City area path forward (PDF)(15 pp, 966 K, May 2013) Oklahoma City area update (PDF)(14 pp, 1 MB, June 2014) Oklahoma City Update 2015 (PDF)(15 pp, 1 MB)