If required, the owner and/or the developer shall be responsible for supplying to the City, information prepared by a qualified soils engineering firm, indicating that existing soil conditions are adequate in stability and strength for construction of public and private improvements. If determined by the soils engineering firm that adequate soils conditions do not exist, the owner and/or developer shall indicate what measures shall be taken to achieve adequate soil strength and stability for both public and private improvements. (Ord. 919, 5-29-1990)