The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Connecticut on April 22, 2014, with supplemental submittals on June 18, 2015 and September 25, 2015. This revision establishes sulfur in fuel oil content limits for use in stationary sources. In addition, the submittal includes a revision to the sampling and emission testing methods for the sulfur content in liquid fuels. The intended effect of this action is to approve these requirements into the Connecticut SIP. This action is being taken under the Clean Air Act.