On July 28, 2017, the Connecticut Department of Energy and Environmental Protection (CTDEEP) issued a notice of intent to amend sections of 22a-174-3a and 22a-174-33 of Regulations of Connecticut State Agencies (RCSA). These sections set out requirements for air quality permitting based on greenhouse gas (GHG) emissions.

Specifically, the proposed amendments delete all the provisions in RCSA 22a-174-3a Permit to Construct and Operate Stationary Sources and RCSA 22a-174-33 Title V Sources, which require air permitting for a new or an existing emission source solely due to exceedance of certain levels of GHG emissions. In other words, the GHG emission levels may not be treated as the sole criteria for requiring a permit under these regulations. However, the proposed amendments retain (and clarify) sections which regulate the GHG emissions from sources already subject to major source permitting for other pollutants. The proposed amendments will ensure that the CTDEEP regulations are consistent with the current United States Environmental Protection Agency (USEPA) regulation on GHG emissions – 80 FR 50199-50203, Prevention of Significant Deterioration and Title V Permitting for greenhouse gases: removal of certain vacated elements and with the decision of the Supreme Court of the United States (Utility Air Regulatory Group v. EPA, 134 S.Ct. 2427; June 23, 2014) on permitting based on GHG emissions.

Written comments on the proposed amendments may be submitted to the CTDEEP by 5:00 PM on August 31, 2017 via eRegulations System (Tracking No. PR217-018), email or mail. Emailed comments should be sent to merrily.gere@ct.gov. Comments sent via standard mail should be addressed to: Merrily A. Gere, Connecticut Department of Energy and Environmental Protection, Bureau of Air Management, 5th Floor, 79 Elm Street, Hartford, Connecticut 06106. The CTDEEP will also hold a public hearing at CTDEEP's office at 11:00 AM on August 29, 2017.

Additional details regarding the proposed amendments and public hearing can be found here.