Ill. Admin. Code tit. 35, § 102.430
Questioning of Witnesses
AUTHORITY: Implementing Sections 5, 7.2, 13(c), 13.3, 17.5, 22.4(a), 22.4(d), 22.7(d), 27, 28, 28.2, 28.6, 29, and 41 of the Environmental Protection Act (Act) [415 ILCS 5/5, 7.2, 13(c), 13.3, 17.5, 22.4(a), 22.4(d), 22.7(d), 27, 28, 28.2, 28.6, 29, and 41] and authorized by Sections 26 and 27 of the Act [415 ILCS 5/26 and 27].POLLUTION CONTROL BOARD
All witnesses will be subject to questioning by any person. Repetitious, irrelevant, harassing, or cumulative questioning will be prohibited by the hearing officer. The Board will not consider as substantive evidence any unsworn information that is presented in the form of a question during questioning of any witness.