(a) A preliminary soils report, prepared by a registered civil engineer and based upon adequate test borings, shall be required for every subdivision for which a tentative map is required. The preliminary soils report shall be submitted with the map application for review. Upon such review, the city may require additional information or reject the report if it is found to be incomplete, inaccurate or unsatisfactory.
(b) The preliminary soils report requirement may be waived if the city engineer determines that, due to the knowledge the city has as to the qualities of the soils of the subdivision, no preliminary analysis is necessary.
(c) A soils investigation of each potentially affected lot in the subdivision may be required by the city engineer as a condition precedent to consideration of the tentative map by the planning commission if the preliminary soils report indicates:
(1) The presence of critically expansive soils or other soils problems which, if not corrected, would lead to structural defects; or
(2) The presence of rocks or liquids containing deleterious chemicals which, if not corrected, could cause construction materials such as concrete, steel and ductile or cast iron to corrode or deteriorate.
(d) Any soils investigation required pursuant to this section shall be done by a registered civil engineer who shall recommend the corrective action likely to prevent structural damage to each structure proposed to be constructed in the area where the soils problem exists. The planning commission may approve or conditionally approve a tentative map, if it determines that the recommended corrective action is likely to prevent structural damage to each structure to be constructed. Such recommended corrective action shall be required to be incorporated in the construction of each structure as a condition to the issuance of any building permit. (Ord. No. 1500, § 3 (part).)