35 Ill. Adm. Code 106.604
Petition Content Requirements
Section 106
Section 106.604 Petition
Content Requirements
A petition for review filed under
this Subpart must include:
a) A copy of the letter, or other written communication, setting
forth the Agency's finding of culpability;
b) A clear identification of the county in which the source is
located; and
c) A detailed description of, and justification for, the source's
position that the Agency's finding of culpability is incorrect.