Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 543.095

(1) As used in this section, “person” has the meaning given that term in ORS 174.100.

(2) No person shall be estopped or precluded from challenging the constitutionality or validity of any provision of chapter 449, Oregon Laws 1997, or the provisions of chapter 873, Oregon Laws 1999, as a result of having received or sought benefits under, complied with, paid fees under or filed an application under those statutes, or as a result of having participated in their drafting, enactment or implementation.

(3) Nothing in this section shall be construed to imply that a person is estopped or precluded from challenging the validity or constitutionality of any statute as a result of having participated in the drafting, enactment or implementation of the legislation that resulted in the enactment of such statute.