220 ILCS 15/5
Any person directly affected by the order of the Commission shall have the right to bring a civil action to test the lawfulness and reasonableness of the order by filing a complaint in the Circuit Court of the county in which the proposed storage area or any part thereof, may lie, against the Commission or the members thereof as defendants, for review of such order. Such action shall be brought within 30 days of the entry of the order by the Commission and in the event no such action is filed within that time, the order of the Commission shall be final. In such action the court may stay the order of the Commission until the court shall enter its judgment. In such action the burden of proof shall be upon the party complaining of such order and such order shall be deemed prima facie valid. Any person directly interested in the subject matter may, in the discretion of the court, be permitted to intervene in such action. Any party to such action may offer in evidence all or any part of the record of the hearing before the Commission, and any other relevant evidence. The practice, pleading and proceedings in such action, which shall be equitable in nature, shall conform to the rules prescribed by the Civil Practice Law as far as the same may be applicable. The court shall have jurisdiction to enter a judgment affirming or setting aside the order, or remanding the cause to the Commission with directions to modify such order so that it shall conform to this Act. Such action shall have precedence over other matters before the court. Appeals may be taken by any party to such action in the same manner and to the same extent as in other civil actions.
220 ILCS 15/5