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(A) (1) Within the city there are native soils which expand when wet and thereby destabilize any structure built upon these soils.
(2) The existence of the expansive soils is local geologic condition which requires the protection of the public health, safety and welfare in addition to those protections provided by the Uniform Building Code.
(B) Therefore, notwithstanding any inconsistent provision of the Uniform Building Code as it may from time to time be amended, no person shall build or commence the construction of any structure requiring a slab or continuous perimeter foundation until the person has either:
(1) Removed the native soil and installed a properly compacted non-expansive soil to a depth of at least three feet below the lowest extension of the foundation or slab. Soil removal and replacement hall extend at least five feet beyond the perimeter foundation line; or
(2) Provided to the City Building Official the written report of a qualified soils engineer stating that the native soils at the site of the proposed construction are non-expansive and are properly compacted and suitable for construction of the proposed structure according to the approved plans for the structure.
(Ord. 99-100, passed 4-13-1999)