2008 Ozone NAAQS Attainment Demonstrations
 2015 Forecasted Unhealthy Ozone Days
 2016 Forecasted Ozone
 2017 Forecasted Unhealthy Days
 2018 Forecasted Ozone Days
  Forecasted Ozone Exceedances
 2019 Forecasted Ozone
 Connecticut's 2008 Ozone Attainment Designations
 Failure to Attain
  Information Related to Failure (Ozone NAAQS)
 Final Cross-State Air Pollution Rule (CSAPR)
 May 2016 Exceptional Event Request
 Ozone Fact Sheet Images
 Ozone Good Neighbor SIP
 Ozone Information
 Ozone Planning Efforts
 Ozone SIP Revision - October 15, 2001
 RACT under the 2008 Ozone NAAQS
  On July 20, 2012, Connecticut’s designation by the U.S. Environmental Protection Agency (EPA) as marginal nonattainment for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS) became effective. Under the Clean Air Act (CAA), this marginal nonattainment designation obligates DEEP to correct pre-1990 RACT requirements (the RACT fix-up).
 Section 22 Workgroup Arichive
 Withdrawal of the 2012 Ozone Transportation Conformity Budgets
  EPA has approved the withdrawal of the 2012 transportation conformity budgets previously determined by EPA to be adequate for use in conformity determinations.