(1) The environmental protection fund is created within the state treasury.

    (2) The state treasurer may receive money or other assets from any source for deposit into the environmental protection fund. The state treasurer shall direct the investment of the environmental protection fund. The state treasurer shall credit to the environmental protection fund interest and earnings from fund investments.

    (3) Money in the environmental protection fund at the close of the fiscal year shall remain in the fund and shall not lapse to the general fund.

    (4) Money in the environmental protection fund shall be expended, upon appropriation, only for such purposes as are specifically provided by law.