On November 27, 2007, Indiana submitted the State Plan for implementing the Other Solid Waste Incineration Units (OSWI). The enforceable mechanism for this State Plan is a State rule codified in 326 Indiana Administrative Code (IAC) 11-9. The rule was adopted on February 7, 2007, and became effective on August 9, 2007. [80 FR 10359, Feb 26, 2015]