Any person owning, leasing or in possession of lands in the
Village shall maintain them at a level or grade not lower than the
level established for the adjoining sidewalk or sidewalk line, as
fixed by the Village Engineer, to a distance of not less than six
feet from the sidewalk or sidewalk line, unless he shall have protected
or walled off said land from the sidewalk or street by a fence of
such height and construction as shall have been approved by the Superintendent
of Public Works.