Here is a link to their web site.  We have also included a few of the most frequesntly used numbers for your convenience.

http://www.in.gov/idem/4994.htm

Indiana Department of Environmental Management  (IDEM)  800-451-6027
Indiana Governement Center North
100 North Senate Avenue
Indianapolis, IN  46204
 General fax #    317-232-3403
Contacts: 
 Travis Goodwin - Confined Feeding Permits Section chief
Melissa Farrington  -  File Room 
Tyson Long  - Permit Writer
Tom Park
Office of Environmental Adjudication   317-233-0850
Mathew Gluckman   312-886-6089 
 NPDES Programs Branch
EPA Region 5
77W. Jackson Blvd.