Whenever the City Council shall order any sidewalk to be constructed, replaced, repaired or reconstructed, the City Engineer shall thereupon cause the owner of record of the lot or piece of land to be notified of the order. The notice served upon the property owner shall specify the time in which the owner shall perform, or cause to be performed, the work and shall further inform the owner that if the owner fails to cause the improvement(s) to be made as directed within the time specified in the Notice of Construction, then and in that event, the City will cause the improvement(s) to be made and the costs thereof to be levied and assessed thereafter as a special tax against the property. The Notice provided herein shall be given by first class mail. The City Engineer shall determine the length of time the owner shall have to complete the construction, repair, replacement or reconstruction based upon the City Engineer's determination of the severity of the problem, the time of year and the danger to pedestrians. In no event, shall the Notice of Construction provide for a term less than 30 days or longer than 12 months from the date of notification. The City Engineer's specified time to be allowed for construction, repair, replacement or reconstruction shall be included with the recommendation to the City Council when it considers the order to construct, repair, replace or reconstruct and may be modified by the City Council.