70 ILCS 805/18.6b

Any forest preserve district may transfer all or a part of the interest earned on the Landfill Expense Fund to the General Fund of that forest preserve district commencing 10 years after closure of the facility or after the amount of $50,000,000 has accumulated in said fund. Forty years after closure of the facility the Landfill Expense Fund shall be abolished, and the balance therein transferred to the General Fund of that forest preserve district.