The Office Building Districts (OB-1, OB-2) and their regulations are established in order to achieve, among others, the following purposes:
(a) To provide sufficient areas, in appropriate and convenient locations, for professional, administrative, and medical offices as well as mixed use development and the exchange of services;
(b) To protect adjacent residential neighborhoods by restricting the types of land and non-residential uses, particularly at the common boundaries, which would create congestion, hazards, noise, odors or other objectionable influences; and,
(c) To promote the most desirable land use and traffic patterns in accordance with the objectives of the Plan of the City.