When the planning commission or the building inspector deems it necessary, any application for a conditional use permit, a planned unit development approval or a building or use permit shall be accompanied by a geologic and soils survey report for the lot for which application approval is sought. The report shall be prepared at applicant's expense by a geologist or soils engineer and shall show the suitability of soils on the property to accommodate the proposed construction, as well as any discernible flood or earthquake hazards. (2004 Code § 10.13.010)

Whenever a geologic and soils survey report indicates that a lot is subject to unusual potential or actual hazard, the applicant shall meet the special conditions required by the planning commission and the building inspector to reduce or eliminate such hazard. If such conditions cannot be met, or will not be met, the application shall be denied. (2004 Code § 10.13.010)