§ 18-6-4 TRAPS; REQUIRED.
   (A)   General requirements.
      (1)   Grease traps are required at all food service facilities directly or indirectly connected to the city’s sewage system. All fixtures within such a food service facility, including, but not limited to kitchen sinks, dishwashers, automatic hood wash units, floor drains in food preparation, and storage areas, and any other source deemed by the City Manager to be a source of FOG or which may introduce FOG into the sewer system, must be connected to a grease trap. In no case shall FOG be directly introduced into the sewage system. A grease trap shall function to provide a quiescent, broad surface area that provides sufficient retention time for natural buoyancy of the FOG particles to separate from effluent and to retain FOG particles within the structure. Grease traps may be located underground and outside of a food service facility and shall have at least one inspection hatch on the top surface to facilitate inspection, cleaning, and maintenance. Grease traps shall be designed to collect, contain, or remove food wastes and grease from the waste stream while allowing the balance of the liquid waste to discharge to the sewage system. All grease traps shall be designed and installed in accordance with sound engineering principles and according to the city specifications and shall fulfill all requirements of the city’s codes.
      (2)   Sand and oil traps are required at all transportation service establishments directly or indirectly connected to the city’s sewage system. All fixtures within such a transportation service establishment deemed by the City Manager to be a source of sand and/or oil that may be introduced into the sewer system shall be connected to a sand and oil trap. In no case shall sand or oil be directly introduced into the sewage system. The sand and oil trap shall function to provide a quiescent, broad surface area that provides sufficient retention time for natural settling of the sand particles to separate from effluent and to retain sand and oil particles within the structure. Sand and oil traps may be located underground and outside of a transportation service establishment and shall have at least one inspection hatch on the top surface to facilitate inspection, cleaning, and maintenance. Sand and oil traps shall be designed to collect, contain, or remove sand and oil from the waste stream while allowing the balance of the liquid waste to discharge to the sewage system. All sand and oil traps shall be designed and installed in accordance with sound engineering principles and according to the city specifications and must fulfill all requirements of the city’s codes.
   (B)   Facilities which have traps on March 1, 2005. Facilities which have traps on March 1, 2005 shall be immediately subject to the provisions of this article.
   (C)   Facilities which have traps after March 1, 2005. Facilities coming into existence after March 1, 2005, or facilities which existed on February 28, 2005 but which are renovated on or after March 1, 2005 shall be immediately subject to the provisions of this article. Any modification of an existing facility requiring a building permit from the city and showing an estimated cost of no less than $5,000 shall be considered a renovation within the meaning of this division (C).
   (D)   Existing facilities. Existing facilities that do not have traps shall install the required traps on or before December 31, 2005.