Payment of the assessment must be made by check or money order payable to: "Treasurer, State of Illinois" and shall be submitted with the certification application to:

Illinois Environmental Protection Agency

Division of Laboratories

Attn: Laboratory Accreditation Unit

2520 West Iles Avenue

P.O. Box 19276

Springfield, Illinois 62794-9276

(Source: Amended at 50 Ill. Reg. 274, effective December 23, 2025)