A. For the purpose of making a comprehensive plan for the physical development of the municipality, the planning and zoning commission shall make careful and comprehensive studies of present conditions and future growth of the municipality and with due regard to its relation to neighboring territory. The plan shall be made with the general purpose of guiding and accomplishing a coordinated, adjusted and harmonious development of the municipality and its environs which will, in accordance with the present and future needs, best promote health, safety, morals, order, convenience, prosperity and general welfare, as well as efficiency and economy in the process of development.
B. Before adopting a comprehensive plan as referred to in the preceding subsection, or any part of it, or any substantial amendment thereof, the commission shall hold at least one public hearing thereon, notice of the time of which shall be given by one publication in the official newspaper of the city not less than ten (10) nor more than twenty (20) days before the date of hearing. The adoption of the plan or part or amendment thereof shall be by resolution of the commission carried by the affirmative vote of not less than two-thirds (2/3) of the members of the commission. After adoption of said plan by the commission, an attested copy thereof shall be certified to the council and the council may approve the same, and when said plan or any modification or amendment thereof shall receive the approval of the council, the said plan, until subsequently modified or amended as hereinbefore authorized, shall constitute the official city plan.
C. When such comprehensive plan as hereinbefore provided has been adopted, no substantial amendment or modification thereof shall be made without such proposed change first being referred to the planning and zoning commission for its recommendations. If this commission disapproves the proposed change, it may be adopted by the council only by the affirmative vote of at least three- fourths (3/4) of the said council. (Ord. 502, 5-2-1960)