13.30.040 Applicability.
A. Discharge of Waste. Waste which contains fats, oil and grease shall be discharged into the POTW system only as set forth in this chapter. The following facilities shall discharge all waste from sinks, dishwashers, drains, and any other fixtures through which grease may be discharged, into an adequately sized, properly maintained and functioning gravity grease interceptor (GGI)/hydromechanical grease interceptor (HGI) before the discharge enters the POTW, as well as grease interceptor (GGI/HGI) effluent inspection port. (Note: Dishwasher not allowed on HGI.)
1. Every commercial food preparation and food service facility, including but not limited to bakeries, boardinghouses, butcher shops, cafes, clubhouses, beverage/coffee stands, commercial kitchens, correction facilities (prisons), delicatessens, fat rendering plants, ice cream parlors, hospitals, churches, caterers, meat packing plants, restaurants, schools, slaughter houses, soap factories, and similar facilities, especially where meat, poultry, seafood (excludes fresh fish), dairy products or fried foods are prepared or served.
2. All shopping centers that have food processing facilities.
3. All food courts.
4. All other facilities discharging grease in amounts that, according to this chapter, will, alone or in concert with other substances from the discharges of other facilities in the opinion of the city, have a reasonable chance to impede or stop the flow in the POTW or require additional treatment.
B. Grease Interceptors (GGIs/HGIs) Required. All businesses, including, but not limited to, assisted living facilities, convalescent homes, day nursing and childcare facilities, sanitariums, hotels, maternity homes, motels in which there is a commercial food preparation service, nursing homes, retirement homes, in which food preparation occurs as defined in GHMC 13.30.040(A).
C. Exemptions.
1. Modifications to existing facilities that do not add new buildings or new grease generating activities are exempt from this requirement.
2. Adult family homes and family day care facilities.
3. Facilities with four or less drainage fixture units (DFUs).
D. Grease Interceptors (GGIs/HGIs) Not Required. Interceptors (GGIs/HGIs) shall not be required for single-family residences, duplexes, triplexes, quadplexes, or apartment complexes, unless the city first determines there are discharges from the property that will create problems in the POTW. The determination shall be made based upon an investigation of the property, and a comparison of the content and amount of discharge from the property with the discharges of other properties similar in size and use. Upon a determination that the discharges will create problems in the POTW, the supervisor may require the installation of an adequately sized grease interceptor (GGI/HGI) to treat the discharges.
E. Review to Determine Applicability. All building and plumbing applications shall be reviewed with the submission of the applicant’s plumbing plan to determine the need for an interceptor (GGI/HGI). (Ord. 1185 § 4, 2010; Ord. 1107 § 7, 2007; Ord. 1087 § 6, 2007).