There is hereby established in the state treasury the “Concentrated Animal Feeding Operation Indemnity Fund”, to be known as the “fund” for the purposes of sections 640.740 to 640.747. All fees or other moneys payable pursuant to the provisions of section 640.745 or other moneys received including gifts, grants, appropriations, and bequests from federal, private or other sources made for the purpose of the provisions of this act^* shall be payable to and collected by the director of the department of natural resources and deposited in this fund. The money in this fund, upon appropriation, shall be expended to close class IA, class IB, class IC and class II concentrated animal feeding operations as defined in the department’s rules, that have been placed in the control of the government due to bankruptcy or failure to pay property taxes, or if the class IA, class IB, class IC or class II concentrated animal feeding operation is abandoned property. “Abandoned property”, for the purposes of this section, means real property previously used for, or which has the potential to be used for, agricultural purposes which has been placed in the control of the state, a county, or municipal government, or an agency thereof, through donation, purchase, tax delinquency, foreclosure, default or settlement, including conveyance by deed in lieu of foreclosure, and has been vacant for a period of not less than three years. Any portion of the fund not immediately needed for the purposes authorized shall be invested by the state treasurer as provided by the Constitution and laws of this state. All income from such investments shall be deposited in the fund. Any unexpended balance in the fund at the end of any appropriation period shall not be transferred to the general revenue fund and, accordingly, shall be exempt from the provisions of section 33.080 relating to the transfer of funds to the general revenue funds of the state by the state treasurer.