Basics:
Illinois OSFM has UST operator training rules in effect.

UST Searchable Database:
UST Public Inquiry

Class A/B:
Illinois approved third party training vendors. A refresher is required every 48 months. Our Illinois Class A/B UST operator training course is now approved and online! Check it out!

Class C:        
Our Illinois Class C online course is approved by the Illinois OSFM. A refresher is required every 48 months. Note only IL OSFM courses are permitted. Class A/B operators may not train their Class C employees unless the course is state-approved.

Link:
See the Illinois OSFM UST Program web page for more information.