A. Grease, oil and solids interceptors shall be installed by each minor industrial user for the proper handling of liquid wastes containing floating oils, fats, grease or sediment in excessive amounts or any flammable wastes, or other harmful ingredients. The Public Works Director shall specify minimum construction standards for interceptors and other pretreatment devices. Suitable pretreatment devices shall be installed by all minor industrial users when making any modifications to the liquid waste plumbing or prior to January 1, 1995, whichever is the first to occur.

B. Interceptors shall be of a type and capacity approved by the Public Works Director and as specified by the most current interceptor policy adopted by the city. Interceptors shall be located under cover and shall be readily and easily accessible for cleaning and inspection. Drainwater, unpolluted runoff, groundwater or unpolluted waste streams shall not be discharged to interceptors.

C. Interceptors approved by the Public Works Director shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, watertight and equipped with easily removable covers which, when bolted in place, shall be gastight and watertight.

D. Interceptors shall be maintained by the owner, at his or her expense, and shall be continuously operated at all times.

E. Failure by the owner to properly clean and maintain interceptors shall be considered sufficient cause for the Public Works Director to disconnect the industrial user from the wastewater facilities, to direct that the industrial user discontinue discharging to the wastewater facilities, or to take enforcement or punitive actions as provided for in this chapter.