To pay for an action authorized by Section 1475.002, a county may, on the approval of at least two-thirds of the qualified voters of the county who vote on the measure:
(1) issue bonds or warrants or otherwise lend its credit in addition to its other debt and in an amount not to exceed one-fourth of the taxable value of the real property in the county; and
(2) impose taxes to pay the interest on and to provide a sinking fund for the redemption of the debt.