Air Plan Approval; Designation of Areas for Air Quality Planning Purposes; Indiana; Redesignation of the Morgan County Sulfur Dioxide Nonattainment Area

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In accordance with the Clean Air Act (CAA), the Environmental Protection Agency (EPA) is redesignating the Morgan County nonattainment area, which consists of Clay and Washington Townships in Morgan County, Indiana, to attainment for the 2010 sulfur dioxide (SO 2 ) National Ambient Air Quality Standards (NAAQS). EPA is also approving Indiana's maintenance plan for the Morgan County SO 2 nonattainment area. Indiana submitted the request for approval of the Morgan County area redesignation and maintenance plan on October 10, 2019, and a clarification letter on May 5, 2020. EPA has previously approved Indiana's attainment plan for Morgan County. EPA proposed to approve this action on July 14, 2020 and received no comments.