M-2 district properties within 150 feet of residential or business commercial districts
shall provide effective screening around open areas if such areas are used for storage
or for any industrial purpose other than the transportation of goods between buildings.
The screening shall consist of densely planted trees, shrubs or hedges not less than
ten feet in height or of a ten-foot-high wall or fence. This planting strip shall
be at least six feet wide and shall be considered part of the required yard.