Moneys in the funds of the petroleum underground storage tank release compensation board, except as otherwise provided in any resolution authorizing the issuance of its revenue bonds or in any trust agreement securing the same, in excess of current needs, may be invested by the board in notes, bonds, or other obligations of the United States, or of any agency or instrumentality thereof, or in obligations of this state or any political subdivision thereof, or the treasurer of state’s investment pool authorized under section 135.45 of the Revised Code. Income from all such investments of moneys in any fund shall be credited to such funds as the board determines, subject to the provisions of any resolution or trust agreement, and the investments may be sold as the board determines.