225 ILCS 210/5005: Findings of fact.

The Department shall make findings of fact in such hearing, and shall render its decision within 30 days after termination of the hearing, unless additional time is required by the Department for a proper disposition of the matter. The Department shall serve a copy of its decision on the applicant or holder either personally or by certified or registered mail within 5 days of rendering the decision. Technical errors in the proceeding before the Department shall not be grounds for reversal of any administrative decision unless it appears to the court that such error materially affects the rights of any party and results in substantial injustice to such person.