2019-20846: Air Plan Approval; Indiana; Second Maintenance Plan for 1997 Ozone NAAQS
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Pursuant to the Clean Air Act (CAA), the Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision. On June 20, 2019, the Indiana Department of Environmental Management (IDEM) submitted the State's plan for maintaining the 1997 ozone National Ambient Air Quality Standards (NAAQS or standard) in the following areas: Indianapolis, La Porte County, and South Bend-Elkhart areas in Indiana; and the Indiana portions of the Chicago-Gary-Lake County, IL-IN (Chicago), Cincinnati- Hamilton, OH-KY- IN (Cincinnati), and Louisville, KY-IN (Louisville) multi-state areas. EPA is proposing to approve these maintenance plans because they provide for the maintenance of the 1997 ozone NAAQS through the end of the second 10-year maintenance period. This action, when finalized would make certain commitments related to maintenance of the 1997 ozone NAAQS in these areas federally enforceable as part of the Indiana SIP.
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
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