The Environmental Protection Agency (EPA) is approving a Connecticut State Implementation Plan (SIP) submittal addressing regional haze for the first planning period from 2008 through 2018 that was submitted by the Connecticut Department of Environmental Protection (now known as Connecticut Department of Energy and Environmental Protection or CT DEEP) on November 18, 2009, and March 12, 2012. These submittals address the requirements of the Clean Air Act (CAA) and EPA's rules that require States to prevent any future, and remedy any existing, manmade impairment of visibility in mandatory Class I areas caused by emissions of air pollutants from numerous sources located over a wide geographic area (also referred to as the regional haze program). States are required to assure reasonable progress toward the national goal of achieving natural visibility conditions in Class I areas.