Payment shall be made by check or money order payable to Treasurer, State of Illinois. Payment (and any notice of deferral of payment under Section 856.204(a)) shall be mailed to the Agency at the following address:

Fiscal Services

Illinois Environmental Protection Agency

2520 West Iles Avenue

P.O. Box 19276

Springfield, Illinois 62794-9276

(Source: Amended at 50 Ill. Reg. 282, effective December 23, 2025)