EPA Proposes Approval of Revised Air Quality Implementation Plan for Indiana

Summary

The Environmental Protection Agency (EPA) is proposing to approve revisions to Indiana's state implementation plan, which implements EPA regulations for particulate matter smaller than 2.5 micrometers (PM 2.5 ) and recognizes nitrogen oxides (NO X ) as an ozone precursor, following requests from the Indiana Department of Environmental Management (IDEM) on July 12, 2012, and December 12, 2012.