35 Ill. Adm. Code 312.101
Prohibition
Section 312
Section 312.101Â Prohibition
A person must not cause or allow
the use or operation of any treatment works for which a permit is required by 35
Ill. Adm. Code 309 unless the operation of the treatment works is under the
direct and active field supervision of a person who has been certified by the
Agency as competent to operate the particular type or size of treatment works
being used or operated.