For the purpose of carrying out the provisions of this chapter, the Director of Finance may by executive order authorize the withdrawal from the General Fund of an amount or amounts not to exceed the amount of the unsold bonds which the committee has by resolution authorized to be sold for the purpose of carrying out this chapter. Any amounts withdrawn shall be deposited in the fund and shall be disbursed by the committee in accordance with this chapter. Any money made available under this section to the board shall be

returned by the board to the General Fund from moneys received from the sale of bonds sold for the purpose of carrying out this chapter. Those withdrawals from the General Fund shall be returned to the General Fund with interest at the rate which would otherwise have been earned by those sums in the Pooled Money Investment Fund.