No person, unless authorized by the City Council, shall make any excavation in any street, alley or other public place within the City without first obtaining permission so to do from the Mayor or City Council; and in no event shall any such excavation be made until such person shall have executed a bond to the City in the penal sum of one hundred dollars ($100.00) with at least one good surety, a resident of the City, to be approved by the City Clerk, conditioned for the careful return of all earth in as good and firm condition as before such excavation was made. (1994 Code)