(1) An authority may incur general indebtedness for authority purposes, issue bonds, notes, or other evidences of indebtedness not to exceed an amount, together with any outstanding nonvoter approved general obligation debt, equal to three-fourths of one percent of the value of the taxable property within the authority. The maximum term of the obligations may not exceed twenty years. The obligations may pledge benefit charges and may pledge payments to an authority from the state, the federal government, or any fire protection jurisdiction under an interlocal contract. The interlocal contracts pledging revenues and taxes are binding for a term not to exceed twenty-five years, and taxes or other revenue pledged by an interlocal contract may not be eliminated or modified if it would impair the pledge of the contract.

(2) An authority may also issue general obligation bonds for capital purposes not to exceed an amount, together with any outstanding general obligation debt, equal to one and one-half percent of the value of the taxable property within the authority. The authority may provide for the retirement of the bonds by excess property tax levies. The voters of the authority must approve a proposition authorizing the bonds and levies by an affirmative vote of three-fifths of those voting on the proposition at an election. At the election, the total number of persons voting must constitute not less than forty percent of the voters in the authority who voted at the last preceding general state election. The maximum term of the bonds may not exceed twenty-five years. Elections shall be held as provided in RCW 39.36.050.

(3) Obligations of an authority shall be issued and sold in accordance with chapters 39.46 and 39.50 RCW, as applicable.