(a) Whenever the board of directors of any improvement district shall under the authority vested in it by this act, cause any public work or improvement to be made, payment for which is to be made by levy of special assessments, it may in its discretion, instead of levying the entire assessment therefor at one time, provide for the payment of the same by installments and may issue improvement bonds of the district therefor. Prior to the issuance of any such improvements bonds, the board of directors shall cause notice thereof to be published as provided in Kan. Stat. Ann. § 19-2769. Such improvement bonds shall be issued as provided by law, but no bonds shall be issued under the provision of this act until thirty (30) days after the last day of the protest period as set out in Kan. Stat. Ann. § 19-2769. During said thirty (30) days any person against whose property any special assessment shall have been levied may pay the same in full and thereby discharge such property from the lien thereof. Any improvement bonds issued under the authority of this subsection shall be payable from the levy of special assessments against the property benefited and, if not so paid, by the levy of an ad valorem tax on all taxable tangible property located within such improvement district, in an amount sufficient to pay the principal of and interest on such improvement bonds.

(b) In lieu of issuing improvement bonds of the district, the board of directors may request the board of county commissioners of the county in which such improvement district is located to issue general obligation bonds of the county. If the board of county commissioners approves, it may issue general obligation bonds of the county therefor, which shall be payable from the levy of special assessments against the property benefited and, if not so paid, by the levy of an ad valorem tax on all taxable tangible property located within the county in an amount sufficient to pay the principal of and interest on such general obligation bonds.