Suitable and adequate grease and oil, or sand interceptors shall be provided for the proper handling of wastewater containing grease, oil, sand or other substances prohibited by this chapter; except that such interceptors shall not be required for residential users. All interception units shall be of a type and capacity approved by the city and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be provided, inspected, cleaned regularly in accordance with established BMPs, and maintained in proper operating condition by the user and at the user's expense. The introduction of chemical, bacterial, enzyme, or any other additive into an interceptor, directly or indirectly, that causes interference with the normal operation of the unit or causes pass-through of prohibited substances is prohibited. Interceptor maintenance and cleaning records shall be maintained by the user and made available to pretreatment inspectors for review upon request. (Ord. 1397, 2015)