In the preparations of the comprehensive plan, the planning commission shall make careful and comprehensive surveys and studies of the existing conditions and probable future growth of the municipality and its environs. The plan shall be made with the general purpose of guiding and accomplishing a coordinated, adjusted and harmonious development of the municipality which will, in accordance with existing and future needs, best promote health, safety, morals, order, convenience, prosperity or the general welfare, as well as efficiency and economy in the process of development. (Ord. 556 (part), 2002)