Upon request of the board, supported as required in the bond act, the committee shall determine the necessity or desirability of obtaining interim financing pursuant to Section 16312 or 16313 and of issuing any bonds authorized to be issued and the amount of interim financing or bonds then to be obtained or issued and sold. Successive issues of bonds may be authorized and sold and shall be designated by an appropriate number or other designation. It is not necessary that all of the bonds authorized to be issued be sold at any one time.