In the event of any leak or spill of any pollution or deleterious substance, whatever the cause thereof, the permittee shall notify the planning department. If, in the judgment of the city, such leak or spill represents a potential environmental hazard, the city may issue whatever corrective orders deemed appropriate, and may require the appropriate testing of the surface and subsurface for pollutant incursion, the cost of such tests to be borne by the permittee. (Ord. 706 § 3 (Exh. A), 2019).