Oregon Revised Statutes Public Borrowing § 287A.380

(1) Pursuant to ORS 287A.140, a public body shall levy taxes to pay the maturing interest and principal of advance refunding bonds that are general obligation bonds.

(2) Notwithstanding ORS 287A.140 or any other provision of law, a public body may not cause a tax to be levied to pay the maturing interest and principal of general obligation bonds that have been defeased as described in ORS 287A.195 (2), unless the amounts held to defease the bonds are insufficient.