35 Ill. Adm. Code 166.265
Official Notice
Section 166
Section 166.265 Official
Notice
a)
Notice may be taken of matters of which the circuit courts
of this State may take judicial notice
.
b)
Notice may also be taken of generally recognized technical
or scientific facts within the Agency's specialized knowledge
.
c)
Parties shall be notified either before or during the
hearing, or by reference in preliminary reports or otherwise, of the material
officially noticed, including any staff memoranda or data, and they shall be
afforded an opportunity to contest the material so noticed.
(Section 12(c)
IAPA)