Section 430 ILCS 100/17 - Citizen suits(a) Except as provided in subsection (b), any person may commence a civil action on his own behalf against the owner or operator of a facility for failure to do any of the following: (1) submit a followup emergency notice required under Section 10(d) of this Act;(2) submit a material safety data sheet or a list as required under Section 11(a) of this Act;(3) complete and submit an inventory form containing tier I information required under Section 12(a) of this Act, unless such requirement does not apply by reason of Section 12(b) of this Act.(b) No action may be commenced under subsection (a) against an owner or operator of a facility if the Administrator of USEPA has commenced and is diligently pursuing an administrative order or civil action to enforce the requirement concerned or to impose a civil penalty under the Federal Act with respect to the violation of the requirement.