Oregon Revised Statutes Counties and County Officers § 209.140

(1) Any person or public agency that finds it necessary to interfere with or pave over any established public land survey corner or accessories for any reason, shall notify the county surveyor prior to the interference, who shall lower and witness the monument, or place another monument and witness over the existing monument or reference and replace or set a witness monument, as the case may demand, and record the proceedings in the record of permanent surveys. The county surveyor may charge a fee in an amount that will reimburse the county for the work performed.

(2) When an emergency exists and the county surveyor is unavailable, the person or public agency causing the interference shall cause a registered professional land surveyor to preserve the monument as required in subsection (1) of this section. The registered professional land surveyor referencing the monument shall notify the county surveyor of the references within two business days after the references or interference, whichever occurs first.