Approval of Iowa's Air Quality Implementation Plans; Regional Haze State Implementation Plan Revision and 2013 Five-Year Progress Report

The Environmental Protection Agency (EPA) is taking final action to approve the Iowa State Implementation Plan (SIP) revision submitted to EPA by the State of Iowa on July 19, 2013, documenting that the State's existing plan is making adequate progress to achieve visibility goals by 2018. The Iowa SIP revision addressed the Regional Haze Rule (RHR) requirements under the Clean Air Act (CAA or Act) to submit a report describing progress in achieving reasonable progress goals (RPGs) to improve visibility in Federally designated areas in nearby states that may be affected by emissions from sources in Iowa. EPA is taking final action to approve Iowa's determination that the existing Regional Haze (RH) SIP is adequate to meet the visibility goals and requires no substantive revision at this time.