(a) Owner/operator to provide trap/ interceptor. The owner or operator of premises from which industrial waste is discharged shall provide grease and sand traps/interceptors for the proper handling of liquid wastes containing grease, floatable substances, or sand.
(b) Requirements of trap/interceptor. The traps/interceptors must be of a type and capacity approved by the director to adequately handle grease and sand and must be located so that they are easily accessible for cleaning, inspection, and monitoring.
(c) Cleaning of trap/interceptor. Grease and sand traps/interceptors must be cleaned in such a manner that the volume of grease or sand trap/interceptor waste removed from each trap/ interceptor equals the nominal volume capacity of each respective trap/interceptor whenever it is cleaned. A grease trap/interceptor located upon the premises of a food service establishment must be 100 percent pumped out at least the earlier of:
(1) every 90 days; or
(2) when at least 25 percent or more of the wetted height of the grease trap/interceptor, as measured from the bottom of the grease trap/interceptor to the invert of the outlet pipe, contains floating materials, sediment, oils, or grease. (Ord. 28084)