(a) Service structures, including, but not be limited to, loading docks, propane tanks, dumpsters, electrical transformers, and other equipment or elements providing service to a building or a site, shall be screened in all zoning districts.
(b) Required screening shall include a continuous planting, hedge, fence, wall, or similar screening feature that will enclose any service structure on all sides, unless such structure must be frequently moved, in which case screening on all but one side is required.
(c) Screening established with plant materials shall provide seventy-five (75) percent opacity within two (2) years of planting. All other types of screening shall completely screen service structures.
(d) The minimum height of the screening material shall be one (1) foot more than the height of the enclosed structure (within two (2) years of planting) but shall not be required to exceed ten (10) feet in height.
(e) Whenever a service structure is located next to a building wall, perimeter landscaping material, or off-street parking area, such landscaping or buffering materials may fulfill the screening requirement for that side of the service structure if that landscaping or buffering material is of an average height sufficient to meet the height requirement set out in this district.
(f) Whenever screening material is placed around any trash disposal unit or waste collection unit that is emptied or removed mechanically on a regular basis, a barrier shall be provided which will prevent damage to the screening when the container is moved or emptied.