Oregon Revised Statutes Shipping and Navigation § 783.640

(a) For voyages greater than 24 hours in length, at least 24 hours prior to entering the waters of this state; or

(b) For voyages less than 24 hours in length, prior to departing the port or place of departure.

(a) Relying on tests conducted by the United States Coast Guard or on other tests determined to be appropriate by the department.

(b) Boarding and inspecting vessels regulated under ORS 783.625 to 783.640 and collecting samples of ballast water as part of the inspection.