In any provisional order, the governing body shall set a time and place for it to hear property owners to be assessed and other interested persons wanting to comment on the order. At least ten days before the hearing, written notice of the hearing shall be mailed to the property owners and proof of mailing made by affidavit of the municipal clerk. Failure to mail the notice does not invalidate the proceedings. Notice of the hearing shall also be given by publication for three consecutive publications, the last to be at least one week prior to the date of the hearing. Each notice shall describe the property to be assessed, and proof of publication made by affidavit of the publisher filed with the municipal clerk.