The C-4 District is intended for the conduct of wholesale, retail and office business activities that serve the needs of citizens from anywhere in the metropolitan area, rather than being oriented only to surrounding residential areas. Because the permitted uses may serve and employ a large number of people from a large part of the metropolitan area, the activities conducted, and the traffic generated, make this district very much incompatible with residential development. The Comprehensive Plan policy does not support further expansion of the C-4 District.