(A) New food service establishments. All proposed food service establishments (FSE) that discharge wastewater into the city sanitary sewer system shall be required to install an approved, properly operated, and maintained grease interceptor. All interceptor units shall be of the type and capacity approved by the city. Grease interceptors shall be located so as to provide easy access to the manhole covers for maintenance and inspection activities.
(B) Newly remodeled food service establishments. Newly remodeled FSEs are required to install an approved, properly operated, and maintained grease interceptor. Grease interceptors shall be located so as to provide easy access to the manhole covers for maintenance and inspection activities. All interceptor units shall be installed outdoors of the FSE’s building unless the user can demonstrate to the Planning and Zoning Director. All grease traps units shall be of the type and capacity approved by the Planning and Zoning Director.
(1) In the event the city has to clean sewer laterals or mains, a service fee of 150% of the standard going rate shall apply to cover all city equipment and labor costs.
(2) All food service establishments shall maintain the grease traps at their own expense.
(C) Design criteria.
(1) Domestic wastewater shall not be discharged into a grease retention device.
(2) Wastewater from dishwashing sinks, mop sinks, hand sinks, and floor drains shall be discharged into a grease retention device.
(3) Interior plumbing plans shall be submitted to the Director depicting all fixtures proposed to be connected to a grease retention device.
(4) Grease retention device proposals shall be submitted to the Planning and Zoning Director. Grease retention devices shall not be installed without the prior approval of the Planning and Zoning Director.
(5) Grease interceptors shall be constructed in accordance with the city’s Utility Standards and shall have a minimum of two compartments with fittings designed for grease retention. The minimum size for a grease interceptor is 750 gallons. Garbage disposals and dishwashers shall not be connected to a properly sized grease interceptor.
(6) All grease interceptors shall be designed to allow for complete access for inspection and maintenance of inner chambers as well as viewing and sampling of wastewater discharged to the sanitary sewer.
(7) Grease traps shall be designed to allow for complete access for inspection and maintenance activities. Newly installed grease traps shall include a filter that is designed to prevent the discharge of grease from the unit. Dishwashers and garbage disposals shall not be connected to grease traps.
(8) Alternative grease retention devices or technologies shall be subject to the approval of the Planning and Zoning Director. Such approval shall be based on demonstrated removal efficiencies of the proposed technology.
(D) Best management practices. The following best management practices or BMPs shall be implemented and adhered to by all FSEs.
(1) All new and existing FSEs are required to install a grease retention device.
(2) All grease interceptors and traps shall be maintained by the user at the user’s expense. Maintenance shall include the complete removal of all contents, including floating materials, wastewater, and bottom sludges and solids.
(3) Decanting or discharging of removed waste liquid back into the interceptor or trap from which the waste was removed or any other grease interceptor or trap, for the purpose of reducing the volume to be disposed, is strictly prohibited.
(4) Grease interceptors must be pumped out completely a minimum of once every 90 days or more frequently if the unit has accumulated waste, both floatable and settleable, accounting for 25% of its wetted depth, as measured from the static water level to the interior tank bottom.
(5) Grease hauler pumping receipts must be mailed, faxed, or electronically submitted to the Director within 14 days of the date of grease interceptor maintenance.
(6) (a) Grease traps must be pumped/cleaned out completely a minimum of once every 30 days or more frequently if the unit has accumulated waste, both floatable and settleable, accounting for 25% of its wetted depth, as measured from the static water level to the interior tank bottom.
(b) If the FSE hires a grease hauler to pump out the grease trap, the FSE is required to submit the grease hauler’s receipts to the Planning and Zoning Director. The receipts must be mailed, faxed, or electronically submitted to the Director within 14 days of the date of grease trap maintenance.
(7) The use of chemical treatments such as bacterial additives, emulsifiers, drain cleaners, enzymes, acids, and other chemicals designed to dissolve, purge, or remove grease from grease traps or grease interceptors is strictly prohibited.
(8) FSEs are required to scrape food into the trash and “dry wipe” grease from pots, pans, and dishwasher prior to dishwashing. Food waste is required to be disposed of in the trash.
(E) Inspections. Authorized personnel of the city, bearing proper credentials and identification, shall have the right to enter upon all properties subject to this program, at any time and without prior notification, for the purpose of inspection, observation, measurement, sampling, testing, or record review, as part of this program.
(Ord. 13 2020, passed 8-18-2020) Penalty, see § 151.999