Section 326IAC1-2-20.5. "Compilation of Air Pollution Emission Factors AP-42" defined  


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  •   5. Unless otherwise provided, references to the Compilation of Air Pollution Emission Factors AP-42 (AP-42) means the version indicated in 326 IAC 1-1-3.5. (Air Pollution Control Division; 326 IAC 1-2-20.5; filed May 21, 2002, 10:20 a.m.: 25 IR 3055)