(A) Installation requirements.
(1) All existing, proposed, or newly remodeled food service facilities inside the city wastewater service area shall be required to install, at the user's expense an approved, properly operated and maintained grease trap.
(2) Under special circumstances an exemption to the installation requirements may be granted. A formal request for a grease disposal waiver must be submitted in writing to the city Director of Engineering and Utilities (DEU). In the event that the grease disposal waiver is granted, the city reserves the right to charge a monthly grease disposal elimination fee.
(B) Sanitary sewer flows. Sanitary sewer flows from toilets, urinals, lavatories, and the like shall not be discharged into the grease trap. These flows shall be conveyed separately to the sanitary sewer service lateral.
(C) Floor drains. Only floor drains which discharge or have the potential to discharge grease shall be connected to a grease trap.
(D) Garbage grinders/disposers. It is recommended that solid food waste products be disposed of through normal solid waste/garbage disposal means. If a grinder/disposal is used it must be connected to the grease trap. The use of grinders is discouraged since it decreases the operational capacity of the grease trap and will require an increased pumping frequency to ensure continuous and effective operation.
(E) Dishwashers. Commercial dishwashers must be connected to the grease trap. Dishwashers discharge soap and hot water which can melt grease and allow it to pass through an undersized grease trap. Traps must be sized accordingly to allow enough detention time to allow water to cool and grease to solidify and float to the top of the trap. Water discharged into a grease trap with temperatures exceeding 140° F is prohibited.
(F) Location. Grease trap shall be installed outside the building upstream from the sanitary sewer service lateral connection. This will allow easy access for inspection, cleaning, and removal of the intercepted grease at any time. A grease trap may not be installed inside any part of a building without written approval by the WSS.
(Ord. 62-2011, passed 6-2-11)