Final rule · 2025-13331

Air Plan Approval; Connecticut; 2017 Base Year Emissions Inventory for the 2015 8-Hour Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Connecticut that relate to the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS). The SIP revisions are for the Greater Connecticut and the Connecticut portion of the New York-Northern New Jersey-Long Island, NY-NJ-CT ozone nonattainment areas. This action will approve submittals which include the 2017 base year emissions inventories for these two nonattainment areas for the 2015 Ozone National Ambient Air Quality Standard. This action is being taken under the Clean Air Act (CAA).