Notwithstanding any other provision of this chapter, a licensee shall be excused from making cable television services available to a particular dwelling unit within a licensee area if that dwelling unit is situated at least 500 feet from another dwelling unit and making service available to the dwelling unit would require an aerial or underground extension of cable in excess of 500 feet from an otherwise existing aerial or underground trunk cable. The sole purpose of this exception is to relieve a licensee from providing service to an isolated dwelling unit within a license area under circumstances wherein extension of the system would constitute an excessive burden, and occupants of only one dwelling unit within the area would be deprived of services as a result of the relief. A licensee shall not be entitled to relief under this section unless it shows that it would not have been reasonable to have located cable in such a manner as to be within the distance limitation prescribed by this section. (§ 1, Ord. 1095, eff. July 27, 1989)