5 ILCS 615/10
Except as hereinafter provided, the proceeds derived and bonuses, rentals and royalties from and other inducements and considerations for the execution and operation of the oil and gas leases provided for in this Act shall be disposed of as provided for by the State Officers and Employees Money Disposition Act. However, all bonuses, rentals and royalties received from the permitting or leasing of lands which have been purchased by the Department of Natural Resources (formerly designated the Department of Conservation) from moneys appropriated from the Wildlife and Fish Fund and which at the time of permitting or leasing are under the control of the Department of Natural Resources (formerly designated the Department of Conservation), shall be paid into the Wildlife and Fish Fund of the State Treasury. All proceeds, bonuses, rentals, royalties, and other inducements and considerations received from the permitting or leasing of Department of Natural Resources lands that have not been purchased by the Department of Natural Resources with moneys appropriated from the Wildlife and Fish Fund shall be deposited as follows: at least 50% of the amounts received shall be deposited into the State Parks Fund and not more than 50% shall be deposited into the Plugging and Restoration Fund.
5 ILCS 615/10