It shall be unlawful to make any excavation in any portion of a street or sidewalk in the city which is paved with a concrete or asphalt paving. Where necessary, and where a proper permit has been secured, tunnels may be driven or excavated under any such pavement, provided that upon completion of the work involved the tunnel shall be backfilled with compacted sand.
(Ord. 78-30, passed 8-31-78) Penalty, see § 97.999