It shall be unlawful for any person to make any excavation in or to deposit any earth or other material in any street, alley or upon any sidewalk, within the limits of the village, without a permit first had and obtained from the mayor, which permit shall be in writing and signed by the mayor and attested by the village clerk. Any person receiving such permit who shall make an excavation, or who shall deposit in or on any street, alley or sidewalk, earth or other material for the purpose of laying water drains, sewer or other pipes, for the construction of sidewalks or buildings, or for other purposes, shall, within five (5) days after completing the improvement on account of which the excavation or deposit was made, or within five (5) days after notice from the mayor to do so, remove all earth or other material and restore the part of the street, alley or sidewalk excavated to its original condition. Whenever, under any such permit any excavation or deposit of earth or other material shall be made, the same shall be marked between the hours of sunrise and sunset by red flags not less than twelve by twenty inches (12 x 20") in size, placed along same at three feet (3') above the ground and at a distance of not more than one hundred feet (100') apart; and between the hours of sunset and sunrise by lights placed as above described for the flags. (Ord. 16 § 1)