Connecticut has persistently been designated  nonattainment for national ambient air quality standards for ozone.  Nonattainment is mainly due to transport of pollutants from the New York metropolitan area reacting to form ozone as they travel across Connecticut.  Connecticut DEEP has been working with neighboring states and the EPA to reduce local and regional emissions that cause ozone.  These emissions reductions strategies are documented below.

CT DEEP Comments on NYDEC's minor revisions to proposed subpart 227-3 combustion turbines rule. October 7, 2019

Connecticut's Comments on 6 NYCRR Part 227-3 "Ozone Season Oxides of Nitrogen Emission Limits for Simple Cycle and Regenerative Combustion Turbines" , May 17, 2019.

Connecticut's Comments to New Jersey's Good Neighbor SIP. December 21, 2018.

Final Good Neighbor SIP. Submitted to EPA on December 6, 2018.

Proposed Good Neighbor SIP, September 18, 2018.  Comment Period Closed October 18, 2018.

Connecticut's Comments to Indiana's Good Neighbor SIP.  September 24, 2018

Connecticut's Comments to Ohio's Good Neighbor SIP.  September 18, 2018

Connecticut's Comments to New York's Good Neighbor SIP.  September 7, 2018

Infrastructure Requirements of the Clean Air Act.  September 7, 2018

EPA's Transportation Conformity Guidance. June 14, 2018

EPA Issues Final Nonattainment Area Classification Approach.  March 1, 2018

Connecticut's comments regarding EPA's response to the designation request for the 2015 Ozone Standard. February 15, 2018

EPA's response to Connecticut's designation request  and  EPA's responses to other states (EPA website). December 22, 2017

Connecticut's Attorney General joins 14 other state Attorney Generals in lawsuit against EPA. Specifically, this lawsuit addresses EPA’s failure to meet a Clean Air Act deadline for the nonattainment designations regarding the 2015 ozone standard. December 5, 2017

Withdrawal of Extension of Deadline for Promulgating Designations for the 2015 Ozone National Ambient Air Quality Standards August 2, 2017

EPA's 2023 Transport Modeling  (EPA Website)

EPA's Proposed Implementation Rule for the 2015 Ozone Standard November 2, 2016 (EPA Website)

State and Tribal Designation Recommendations for 2015 Ozone Standard (EPA Website)

Connecticut's Comments on West Virginia's Proposed Good Neighbor SIP. December 4, 2017

Connecticut Comments on EPA's Proposed CSAPR Close-out Rule. August 31, 2018

EPA's Proposed Partial Approval Of Connecticut's 2008 Ozone Attainment Demonstrations. August 3, 2018

Connecticut's Comments Regarding EPA's Proposed Approval of Kentucky's Proposed Good Neighbor SIP.  May 18, 2018  

Connecticut's Comments Regarding Kentucky's Proposed Good Neighbor SIP. March 29, 2018  

Connecticut's Good Neighbor Transport SIP for the 2008 Ozone NAAQS (CT DEEP Website)

RACT Under the 2008 NAAQS (CT DEEP Website)

Proposed Attainment Demonstration for the Southwest CT Portion of the NY-NJ-CT Nonattainment Area for the 2008 Ozone NAAQS and 1997 NAAQS

2010 EPA Proposed Transport Rule  (website)

Request for Termination of CAA Section 185 Fee Requirements Cover letter  and Technical Support Document . December 29, 2017