During the progress of the project the council may make changes in the improvements or acquisitions or in the boundaries of the proposed assessment district, or in the estimate of costs, or in the resolution of intention or proceedings.
Where said changes result in extending the boundaries of the assessment district, increasing the total amount to be collected, or increasing improvements or acquisition, or making substitutions therein, they shall not be ordered except after notice of intention so to do published not less than ten days before the day set for the hearing by one insertion in the newspaper in which the resolution of intention or notice of improvement was published, describing the proposed changes and specifying the time and place of hearing, and after hearing on such notice. Protests may only be made against the proposed changes. If no protests are made, or protests are found to be insufficient, or have been overruled, immediately thereon the council may order said changes.
(Prior code § 8-9.18)