When it is found necessary to grade a lot to a higher or lower finished grade than the natural grade of adjoining property on the sides and to the rear of such lot it shall be incumbent upon the owner of such lot to get permission from the City Engineer to change to a higher or lower finished grade and it shall further be incumbent upon the owner of the lot to provide suitable retaining walls or other approved protection on his property to protect the adjacent property and structures from the draining of surface waters or damage, and further to protect the adjacent property and structures from caving of earth and to assist in the maintaining of the existing natural grade of such adjacent property.
(Ord. 1979-121. Passed 10-18-79.)