DEEP is excited to be getting back to our new normal consistent with the direction of Governor Lamont and as a result of the rapidly improving COVID-19 situation in Connecticut. Starting no later than June 1, all customer facing services will resume normal business operations. For detailed information for what this means at DEEP and for the public we serve, visit our "New Normal" website: DEEP New Normal Information

Ozone Planning Efforts

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.
All documents are PDF unless otherwise noted.
2015 NAAQS
2008 standard boundaries

Final Good Neighbor SIP. Submitted to EPA on December 6, 2018.
Proposed Good Neighbor SIP, September 18, 2018.  Comment Period Closed October 18, 2018.
2008 NAAQS  
2008 standard boundaries
RACT Under the 2008 NAAQS (CT DEEP Website)
1997 NAAQS
2008 standard boundaries
  
  
1979 NAAQS
1979 Standard Boundaries
Request for Termination of CAA Section 185 Fee Requirements Cover letter  and Technical Support Document . December 29, 2017
1-hour Ozone Mid-Course Review Cover Letter  and Technical Report  submitted to EPA. January 10, 2005

SIP dated October 15, 2001

Content Last Updated on October 22, 2019