The following regulations apply to planned industrial developments:
(a) Planned unit development of industrial establishments is encouraged by varying the setback and other requirements if it can be shown that the development results in a more efficient and desirable use of space.
(b) Industrial uses and parcels shall be developed in park-like surroundings utilizing landscaping and existing woodlands, if any, as buffers to screen lighting, parking areas, loading areas or docks and/or outdoor storage of raw materials or products. A planned industrial area shall provide for the harmony of buildings and a compact grouping or groupings in order to economize in the provision of such utility services as are required. Thoroughfares shall be kept to a minimum throughout a planned industrial area in order to reduce through traffic
(c) Off-street parking and loading areas shall be provided with sufficient spaces to meet all anticipated needs. Loading and open space areas shall be screened by walls, fences or plantings wherever visible from residential areas or public streets and highways.
(d) Project side yards of forty feet and a rear yard of fifty feet shall be required if the projects are located adjacent to any residential district or planned residential unit development. All intervening spaces between the right-of-way line and the project building line and intervening spaces between buildings, drives, parking areas and improved areas shall be landscaped with trees and plantings and properly maintained at all times.
(e) Certain types of commercial uses, such as restaurants, central secretarial or stenographic pools, or other business service-type uses, repair services or clinics that may form a small commercial center to serve the needs of the industries or their personnel, may be permitted in a planned industrial area.