Or. Rev. Stat. § 287A.310
(1) As used in this section and ORS 287A.315:
(a) “Obligation” means:
(b) “Property” means:
(6) When property subject to a pledge is acquired by a public body after the pledge is made:
(7) A public body may reserve a right to pledge a pledged property as security for bonds subsequently issued by the public body. If the public body reserves the right, subject to the terms of the operative document that created a previous pledge, the lien of the subsequent pledge may be on a parity or pari passu basis with the lien of the previous pledge, on a prior and superior basis with the lien of the previous pledge or on a subordinate basis with the lien of the previous pledge, as specified in the operative document creating the subsequent pledge. The lien of the subsequent pledge:
[2007 c.783 §50]