(1) The board of commissioners of any district may by resolution, without submitting the matter to the voters of the district, provide for the issuance of refunding general obligation bonds to refund any outstanding general obligation bonds, or any part thereof, at maturity thereof, or before the maturity thereof if they are subject to call for prior redemption or all of the owners thereof consent thereto. Refunding bonds may be combined with an issue of bonds for other district purposes, as long as those other bonds are approved in accordance with applicable law.
(2) The total cost to the district over the life of the refunding bonds or refunding portion of an issue of bonds shall not exceed the total cost to the district which the district would have incurred but for such refunding over the remainder of the life of the bonds to be refunded thereby.
(3) The refunding bonds may be exchanged for the bonds to be refunded thereby, or may be sold in such manner as the board of commissioners deems to be for the best interest of the district, and the proceeds of such sale used exclusively for the purpose of paying, retiring, and canceling the bonds to be refunded and interest thereon. Such bonds may be of any form, including bearer bonds or registered bonds as provided in RCW
39.46.030.