Approval and Promulgation of Air Quality Implementation Plans; Missouri; Regional Haze Five-Year Progress Report State Implementation Plan

The Environmental Protection Agency (EPA) is proposing approval of a revision to the Missouri State Implementation Plan (SIP) submitted by the State of Missouri on August 5, 2014. Missouri's SIP submission (``progress report SIP'') addresses requirements of the Clean Air Act (CAA or Act) and EPA's rules that require states to submit periodic reports describing progress toward reasonable progress goals (RPGs) established for regional haze and a determination of the adequacy of the state's existing SIP addressing regional haze (``regional haze SIP''). EPA is proposing approval of Missouri's progress report SIP submission on the basis that it addresses the progress report and adequacy determination requirements for the first implementation period for regional haze.