The U.S. Environmental Protection Agency (EPA) took final action on determinations for each of the 11 areas that are currently classified as "Moderate" for the 2008 ozone National Ambient Air Quality Standards (NAAQS), including the ones in Connecticut. The Greater Connecticut and New York-New Jersey-Connecticut area will be reclassified as “Serious” nonattainment for the 2008 ozone NAAQS.
This rule will be effective September 23, 2019, but immediate changes to permitting and compliance are not expected. First the Connecticut Department of Environmental Protection (CTDEEP) will be required to submit State Implementation Plan (SIP) revisions that implement emission control measures to satisfy the air quality planning requirements for serious areas by August 3, 2020. Connecticut is in Ozone Transport Region, therefore the state is treated as a serious ozone nonattainment area for regulatory applicability.
For more information, please read the full rule text here. Or for assistance in determining how any of these amendments may affect your facility, contact Kristine Davies in our Boston office at (508) 273-8600 ex 2701.