Notwithstanding the provisions of this chapter, overhead facilities may be installed and maintained for a period, not to exceed 10 days, without authority of the city manager in order to provide emergency service. The city manager may grant special permission, on such terms as he may deem appropriate, in cases of unusual circumstances, without discrimination as to any person or utility, to erect, construct, install, maintain, use or operate poles, overhead wires and associated overhead structures. (Ord. 434 § 2; Ord. 76 § 1. 2002 Code § 18-1.6).