The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Connecticut. The revision amends Regulations of Connecticut State Agencies (RCSA) section 22a-174-20 to update the requirements for controlling volatile organic compound (VOC) emissions from large aboveground storage tanks. The intended effect of this action is to approve these regulations into the Connecticut SIP. This action is being taken in accordance with the Clean Air Act (CAA).