Grease, oil and sand interceptors shall be provided when, in the opinion of the DPS, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand and other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity-approved by the DPS, and shall be located so as to be readily and easily accessible for cleaning and inspection. Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperatures. They shall be of substantial construction, water-tight, equipped with easily removable covers which, when bolted in place, shall be gas-tight and water-tight.
(Ord. 542, sec. vi)