Approval of Revised Municipal Waste Combustor State Plan for Designated Facilities and Pollutants: Indiana

EPA is approving revisions to Indiana's State plan to control air pollutants from large Municipal Waste Combustors (MWCs). The Indiana Department of Environmental Management (IDEM) submitted the State plan on August 24, 2007. The revisions are consistent with Emission Guideline (EG) amendments promulgated by EPA on May 10, 2006. This approval means that EPA finds that the State plan amendments meet applicable Clean Air Act (CAA) requirements for large MWCs for which construction commenced on or before September 20, 1994. Once effective, this approval also makes the amended State plan Federally-enforceable. On July 8, 2008, EPA also published a proposed rule (73 FR 38954) and a direct final rule (73 FR 38925) on this revision. The direct final rule stated that if EPA received an adverse comment, it would withdraw the direct final rule and address all public comments received in a subsequent final rule based on the proposed rule. EPA received an adverse comment and removed the direct final rule on August 21, 2008 (73 FR 49349). This rule responds to the comments received and announces EPA's final action.