(A) It shall be unlawful to make any such excavation or tunnel in any way contrary to or at variance with the terms of the permit therefor. Proper bracing shall be maintained to prevent the collapse of adjoining ground. In excavations, the excavation shall not have anywhere below the surface any portion which extends beyond the opening of the surface.
(B) No injury shall be done to any pipes, cables, or conduits in the making of such excavation or tunnels and notice shall be given to the persons or corporation owning or maintaining any such poles, cables, or conduits, or to the city, department, or officer charged with the care thereof, which are or may be endangered or affected by the making of any such excavation or tunnel before such pipe, cables, or conduits shall be disturbed.
(C) No unnecessary damage or injury shall be done to any tree or shrub or the roots therefor.
(Prior Code, § 500.070) (Ord. 117, passed 11-6-1967) Penalty, see § 150.99