No person shall excavate on land sufficiently close to the property line to endanger any adjoining public street, sidewalk, alley or other public property without supporting and protecting such public street, sidewalk, alley or other public property from settling, cracking, or other damage which might result from such excavation. Should the nature of the excavation in the opinion of the city engineer create a hazard to life unless adequately fenced, the permittee shall construct such fences or guard rails to safeguard persons using the public street, sidewalk, alley or other public property as the city engineer may require.
(Ord. 4564 § 1 (part), 1999)