Ill. Admin. Code tit. 86, § 4000.301
a) Any political subdivision considering a STAR bond project within a STAR bond district shall notify the Department, which shall cause to be prepared an independent feasibility study by a feasibility consultant with certified copies provided to the political subdivision, the Director and the Department of Commerce and Economic Opportunity. The feasibility consultant, along with the independent economist and any other consultants commissioned to perform the studies and other analysis required by the feasibility study, shall be selected by the Director with the approval of the political subdivision. The consultants shall be retained by the Director and the Department shall be reimbursed by the master developer for the costs to retain the consultants. The request for proposal issued under the Illinois Procurement Code [30 ILCS 500] by the Director shall provide that any consultant retained under this subsection (a) must be from a nationally recognized firm. The feasibility study shall include all of the following: