Oregon Revised Statutes Utility Regulation § 758.255

If the owner of any structure or improvement served from the overhead electric or communication service facilities within an underground assessment district does not grant the utility a permit or easement referred to in ORS 758.250 or if such an owner fails to convert to underground service facilities within 90 days after the mailing to the owner of the notice provided by ORS 758.245, the public authority shall order the utility to complete the conversion and to disconnect and remove all overhead facilities, including service facilities, providing service to such structure or improvement.