Oregon Revised Statutes Agriculture § 570.180

Any authorized officer, employee or inspector of the State Department of Agriculture may, in any case where an urgent emergency exists, abate any public nuisance, as described in ORS 570.170, in a summary manner, doing as little damage as possible to the things or premises on which or in which such nuisance exists, with notice to the owner or owners sent by mail at or subsequent to the time of such abatement.