35 Ill. Adm. Code 380.905
Duration
Section 380
Section 380.905 Duration
a) A person will be considered an Operator In Training while his
or her wastewater operator examination results are valid. Pursuant to Section
380.400, examination results are valid for 5 years.
b) An Operator In Training who successfully obtains a Certificate
of Competency in the class for which he or she is in training will no longer be
considered an Operator In Training for that class.