The Environmental Protection Agency (EPA) is approving the Connecticut Regional Haze 5-Year Progress Report submitted as a State Implementation Plan (SIP) revision on June 30, 2015. This revision addresses the requirements of the Clean Air Act and its implementing regulations that States submit periodic reports describing progress toward reasonable progress goals established for regional haze and a determination of adequacy of the State's existing regional haze SIP. Connecticut's progress report notes that Connecticut has made substantial progress toward the emissions reduction expected for the first regional planning period and that visibility in the Federal Class I areas affected by emission from Connecticut is improving and has already met the applicable reasonable progress goals for 2018. The EPA is approving Connecticut's determination that the State's regional haze SIP is adequate to meet these reasonable progress goals for the first implementation period, which extends through 2018, and requires no substantive revision at this time.