35 Ill. Adm. Code 103.106
General
Section 103.106 General
Enforcement proceedings may be
initiated by any person
against any person allegedly violating the Act, any
rule or regulation adopted under the Act, any permit or term or condition of a
permit, or
any
Board
order. [415 ILCS 5/31(d)(1)] Complaints filed
by persons other than the Attorney General or a State's Attorney will be known
as citizen's complaints.