Section 29.46.060 - Assessment roll(a) At any time after approval of an improvement plan, the governing body shall assess the authorized percentage of the cost against property in the district included in the plan in proportion to the benefit received.(b) The special assessment roll shall contain property descriptions, names of record owners, and assessment amounts.(c) The governing body shall fix a time to hear objections to the roll. The municipal clerk shall send an assessment and hearing notice by mail to each record owner of an assessed property not less than 15 days before the hearing.