A. Bracing: It shall be unlawful to make any 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, and in excavations, the excavation shall not have anywhere below the surface any portion which extends underneath the opening at the surface. (1998 Code)
B. Existing Pipes, Cables, Conduits, Trees: No injury shall be done to any pipes, cables or conduits in the making of such excavations or tunnels, and notice shall be given to the persons maintaining any such pipes, cables or conduits and to the public works superintendent before such pipes, cables or conduits shall be disturbed. Proper care shall be taken to avoid injury to the roots of any tree or shrub wherever possible. (Ord. 4-2011, 9-12-2011)