925.20  GREASE INTERCEPTORS.
   (a)   General. 
      (1)   Interceptors shall be provided, operated and maintained whenever liquid or liquid wastes are received by the plumbing system which may contain flammable, explosive, noxious, toxic, gaseous or other materials that may be hazardous to the building or its occupants, or that may be harmful to the building drainage system, the waste water system, sewage treatment plant or its processes.  Deleterious and detrimental materials include but are not limited to greases, oils, sugars (sic), paraffins and other waxes, plastic wastes, paints and other coatings, sands, silts, clays and similar earthly materials.  Such deleterious and detrimental materials shall be intercepted and prevented from entering the waste water system.
      (2)   Wastes from industrial processes, meat packing and food processing industries, and similar processing plants shall be handled in accordance with plans and specifications, approved by the Ohio environmental protection agency, or the proper authority in charge of the sewerage system into which the wastes are to be discharged.  The plans and specifications submitted for approval shall include a full description of the wastes, their characteristics and volume.  The system shall be approved by the proper authority before any work or construction is begun.  (See also Sections 6111.45 of the Revised Code.)
      (3)   Corrosive wastes shall be treated as provided in 4101:2-51-53 of the Administrative Code.
      (4)   Interceptors may be prebuilt or engineered units or they may be constructed or assembled at the site of the work and shall be designed and installed in accordance with accepted engineering practice.  (See rule 4101:2-51-03 of the Administrative Code.)
      (5)   Where prebuilt units are used, they shall be sized and installed in accordance with the manufacture’s specifications, drawings and instructions for the intended service.
      (6)   All interceptors shall be of such capacity and volume as to retain the liquid for a sufficient length of time to permit the deleterious and detrimental materials to separate from the other wastes before they are discharged into the building drain or sewer.  If necessary, strainers shall be installed to retain and collect solid materials one-half inch or larger in any dimension.
      (7)   Interceptors shall be located so as to be readily accessible at all times, with sufficient head room and clear area around them to permit easy inspection and the removal of the accumulated materials from within the interceptor at such intervals and at such times as may be necessary to assure the continued efficient operation of the interceptor and as necessary to prevent the entrance of the deleterious and detrimental materials into the sewage system.  All materials removed shall be disposed of in a manner that will not permit them to enter the sewage system or waste water treatment plant.
      (8)   Where flammable, toxic, noxious, or gaseous wastes or wastes which may be hazardous to the building or its occupants are received by the interceptor, the cover shall be nonabsorbent, be bolted and gasketed, so as to make it gas tight.
      (9)   Where nonhazardous wastes are received by the interceptor, a solid cover of sufficient weight to hold it in its frame or secured by suitable fasteners shall be used.
      (10)   Interceptors shall be constructed of suitable impervious materials not affected by the wastes received.  The interceptor shall be designed to withstand the internal pressures and the external forces to which it may be subjected in any part of the interceptor.  All piping and metals shall resist corrosion to the same degree that soil and waste piping resist ordinary sewage wastes.
      (11)   Where it is necessary to pump the waste from an interceptor, the interceptor outlet shall discharge into a sump as provided in rule 4101:2-51-54 of the Administrative Code.
   (b)   Grease Interceptors.
      (1)   Grease interceptors for kitchen wastes shall be installed so that they will receive all grease bearing kitchen waste except those from garbage disposals.  Grease interceptors shall be installed immediately outside the building where there is easy access for cleaning, unless it is impractical, in which case they may be installed adjacent to and outside of the food preparation area.  Any grease interceptor shall be installed in an open and accessible place from permanent or temporary obstructions over and around the interceptor with adequate head room to permit the ready inspection and complete removal of the contents.
      (2)   The grease interceptor shall be inspected frequently and cleaned as often as necessary to retain the grease wastes.  The materials removed in cleaning shall be removed from the premises for disposal and not be deposited in the plumbing system or sewage system.  The use of enzymes for the cleaning of grease interceptors is not permitted.
      (3)   Prebuilt interceptors eight feet in length or longer shall be equipped with openings at least twenty inches square or twenty-four inches in diameter and located over the inlet and outlet baffles. Sizing shall conform to “U.S. Environmental Protection Agency Design Manual for Onsite Wastewater Treatment and Disposal Systems,” or with accepted engineering practice.  (See rule 4101:2-51-03 of the Administrative Code.)
      (4)   Grease interceptors installed adjacent to equipment capable of fifty gallons per minute flows or less must conform to “PDI G-101 Standards” as listed in “Table 4101:2-51-05(A)” of the Administrative Code.
      (5)   All valves and devices included in the design of the grease interceptors to prevent grease discharge from the interceptor shall be installed in accordance with manufacturer’s instructions.
      (6)   The discharging of floor drains and handwashing facilities in food preparation and meat preparation areas into grease interceptors that conform to “PDI G-101 Standards” is not permitted.
      (7)   A local vent is not required on grease interceptors receiving kitchen wastes.
      (8)   Grease interceptors are not required on apartment or kitchenette wastes.
      (9)   Inlet piping to a grease interceptor shall have one-fourth inch per foot minimum fall.
      (10)   A garbage disposal unit may not be installed in a three-compartment sink used for the cleaning and sanitizing of utensils and equipment.
         (Ord. 95-51.  Passed 11-2-95.)