420 ILCS 5/11

Fees and expenses related to federal activities and facilities. If any activity or facility for which a fee is imposed or an expense is incurred under this Act is an activity or facility of the federal government, the fee shall be paid or the expense shall be borne by the prime contractor under contract with the federal government to perform the activity or operate the facility. If the federal government performs the activity or operates the facility directly, the fee shall be paid or the expense incurred only as provided by federal law.