The holder of any permit issued which grants permission to cut, dig, trench, grade, excavate, tunnel or bore, in or under any road, street, alley, sidewalk, curb, roadside ditch, right-of-way or other public place, as provided by this chapter, shall complete the work and repair the place or places where said work is done within ninety days from the issuance of such permit. The city engineer may extend the time for the completion of the work for which the permit was granted. (Ord. 08-28, § 4, 2008; Ord. 96-55 § 5, 1996)