Oregon Revised Statutes Cities § 223.856

(1) A measure authorizing assessments under ORS 223.851 to 223.876 shall specify the services proposed to be financed by the assessments, the maximum amount that may be imposed and the number of years in which assessments will be made.

(2) Each assessment measure shall provide for the operation and maintenance of a single street lighting, street maintenance or street cleaning service. More than one measure may be submitted to the electors at a single election. Assessments for street lighting may include an amount sufficient to pay construction, reconstruction, modification and installation costs as well as operating and maintenance costs.

(3) The measure shall provide that assessments are in lieu of any existing local option tax for the service to be provided.