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This page provides access to information to assist you in the air permitting process.
IDEM has prepared a list of frequently asked permitting questions. If you have a permitting question, check to see if we've already answered it in this FAQ.
OAQ's Permit Reviewer of the Day can answer specific technical questions about the air permitting program. Contact the Permit Reviewer of the Day by calling toll-free 1-800-451-6027, press 0 and ask for extension 3-0178; or dial (317) 233-0178, then ask for the Permit Reviewer of the Day.