The owner, land occupier, or other person in control of any property who orders, or causes land owned, occupied or controlled by him, or any land, to be graded, or knowingly permits the same, shall maintain in good condition and repair all retaining walls, cribbing, drainage structures, slope planting, sprinkler systems, berms, terracing and other protective devices, together with all fills, excavations and operations and conditions resulting therefrom.
(`83 Code, § 15.28.040) (Ord. 85-11 § 1 (part), 1985)