Limited Manufacturing and General Manufacturing Districts and their regulations are established in order to achieve, among others, the following purposes:
(a) To provide in an appropriate and convenient district sufficient areas for manufacturing to promote employment and strengthen the economy of the community;
(b) To provide limited manufacturing districts for those products and processes in which dust, smoke, fumes, glare, odors, or other objectionable influences can be controlled, and which normally require a large amount of motor vehicle trucking for transportation of their raw materials and finished products;
(c) To provide general manufacturing districts for those products and processes which involve some dust, smoke, fumes, glare, odors, or other objectionable influences, but do not create any dangers to the health and safety of the surrounding neighborhoods, and which normally require access to rail or water for transportation, as well as motor truck routes;
(d) To improve the general environment by prohibiting dwellings, institutions, and public facilities in manufacturing districts, and by the same act, make land more readily accessible for industry;
(e) To protect adjacent residential districts by restricting the types of manufacturing uses in the surrounding areas to only those not creating objectionable influences beyond their district boundaries, by separating and insulating them from the most intense manufacturing activities;
(f) To promote the most desirable use of land in accordance with a well-considered plan, and to stabilize and enhance property values.
(1980 Code 151.71)