If, during the land development work, expansive soil is found within two feet in cut or three feet in fill of the finished grade of any area intended or designed as the location for a building, the permittee shall cause such expansive soil to be removed from such building area to a minimum depth of two feet in cut or three feet in fill and replaced with nonexpansive soil properly compacted; provided, however, the City Engineer may, upon receipt of a report by a soil engineer certifying that he has investigated the property and recommending a design or footings or floor slab or other procedure that in his opinion will alleviate any problem created by such expansive soil, waive the requirement that such expansive soil be removed and replaced with nonexpansive soil. (Ord. 3005 § 1, 2005; Ord. 1797 § 1, 1978).