The construction, maintenance or existence within the city of any unprotected, unbarricaded, open or dangerous excavations, holes, pits or wells, which, in the opinion of the Zoning Administrator, constitute or are likely to constitute a danger or menace to the public health, safety or welfare is hereby prohibited; provided, this section shall not apply to:
   (A)   Any excavation for which a building permit or a temporary permit has been issued by the county’s Department of Building Safety and which is properly protected and warning signs posted;
   (B)   Any mineral extraction site for which a special use has been approved, in accordance with §§ 153.250 through 153.257 of this chapter; and
   (C)   Streams, natural bodies of water or ditches, reservoirs and other such bodies of water created or existing by authority of the city or other governmental agency.
(Prior Code, § 5.70)  Penalty, see § 153.999