Each underground storage tank system or group of underground storage tank systems at a facility must have a Class A, Class B, and Class C operator designated. Separate individuals may be designated for each class of operator or an individual may be designated to more than one of the operator classes. A Class A and Class B operator are required for TOU tanks.

Added at 25 Ok Reg 1867, eff 7-1-08

Amended at 36 Ok Reg 551, eff 8-1-19