RCW 47.60.090

All bonds issued under or by authority of this chapter shall be sold to the highest and best bidder after such advertising for bids as the department deems proper. However, the department may reject any and all bids so submitted and thereafter sell such bonds so advertised under such terms and conditions as it deems most advantageous to its own interests. The purchase price of all bonds issued under this chapter shall be paid to the state treasurer consistent with the provisions of the resolution pursuant to which the bonds have been issued or to the trustee designated in the bond resolution and held as a separate trust fund to be disbursed on the orders of the department.