70 ILCS 805/13.8
In the preparation of the annual appropriation ordinance, an amount not to exceed 0.02% of the equalized assessed value of property subject to taxation by the district may be accumulated in a separate fund for the purpose of specific capital improvements, repairs, or replacements of district equipment or other tangible property. The Fund shall be designated as the "Capital Improvement, Repair, or Replacement Fund". Expenditures from the Capital Improvement, Repair, or Replacement Fund shall be appropriated for the fiscal year in which the capital improvement, repair, or replacement will occur. If any surplus moneys remain in the Fund after the completion or abandonment of any object for which moneys from the Capital Improvement, Repair, or Replacement Fund were used, then any funds no longer necessary for capital improvement, repair, or replacement shall be transferred into the general corporate fund of the district on the first day of the fiscal year following the abandonment or completion of the object or the discovery of the surplus funds.
70 ILCS 805/13.8