15.08.140 Pretreatment Facilities for Fats, Oils and Grease (FOG).
A. Pretreatment is required for newly constructed or remodeled meat cutting, processing and/or curing facilities, fish, fowl and animal slaughterhouses, tallow-rendering, fat-rendering, hide curing establishments, restaurants, cafes, lunch counters, bakeries, coffee stands, cafeterias, bars, clubs or hotels; hospital, sanitarium, factory or school kitchens; and other establishments that serve or prepare food where grease may be introduced into the sewer system including soap manufacturing, factory or hobbyist where FOGs are utilized or generated. All uses referenced herein shall have pretreatment facilities to prevent the discharge of fat waste, oil, or grease. Remodeled facilities with existing pretreatment devices that are determined by the City to be inadequate in size or functionality shall install adequately functioning and/or adequately sized devices.
All existing users at the time of adoption of this ordinance that discharge wastewater containing fats, oils and greases of polar origin (animal or vegetable) and/or oil or grease of nonpolar origin (petroleum or mineral) in excess of one hundred (100) mg/L for polar origin and fifty (50) mg/L for nonpolar origin shall meet the requirement for interception of grease, oils and fats by installing an approved grease interceptor, grease trap or oil/water separator within ninety (90) days of the date of the correction notice as issued by the City. Timelines may be adjusted if approved in writing by the City.
B. Requirements for waste discharge from fixtures and equipment in establishments that may contain grease, including, but not limited to, scullery sinks, pot and pan sinks, vent hood drains, soup kettles and floor drains located in areas where grease containing materials may exist, may be drained into the sanitary sewer only after such discharges are pretreated in an approved grease interceptor or trap in accordance with this section.
No sanitary wastes from toilets, urinals, or other similar fixtures may be discharged through a grease interceptor or grease trap. All other wastes shall enter the trap or interceptor through the inlet pipe only. The wholesale shredding of food wastes into any fixture that discharges to a grease interceptor or trap is prohibited.
C. Pretreatment facilities designed for the prevention of discharge of fats, oils, and grease must be approved by the City in writing prior to installation, using UPC approved or nationally recognized alternate methods.
D. All establishments that generate liquid or semi-solid polar oil or grease shall maintain a container on site for containment of liquid and semisolid oil or grease waste. This liquid or semi-solid oil or grease shall be transported to an approved rendering plant or other form of approved disposal as deemed acceptable by the City. In no case shall free liquid oil or grease be disposed of directly into fixtures that are connected to the sewer system. Unused butter, margarine, lard, or other solid grease products shall not be discharged into the sewer system through garbage disposals or other means. No exceptions to the prohibitions of this subsection are allowed for fixtures that discharge to the sewer system through an approved grease interceptor or grease trap. Hauling and recycling of restaurant grease shall be accomplished by a facility holding a State Rendering Permit.
All establishments that generate nonpolar oil or grease shall maintain a container on site for the containment of this waste. In no case shall free liquid oil or grease be disposed of directly into fixtures that are connected to the sewer system. No exceptions to the prohibitions of this subsection are allowed.
E. The use of any additive, such as enzymes, chemicals, or bacteria, as a substitute for installing a grease interceptor or grease trap or the maintenance of a grease interceptor or grease trap is prohibited, unless allowed by in writing by the City.
F. Each facility required to install and maintain a grease trap or grease interceptor under this ordinance shall provide regular maintenance of said device to the satisfaction of the City in accordance with the requirement set forth.
1. Each person who engages in grease waste handling shall maintain all vehicles, hoses, pumps, tanks, tools and equipment associated with grease waste handling in good repair, free of leaks, and in a clean and sanitary condition. All hoses and valves on grease waste handling vehicles or tanks shall be tightly capped or plugged after each use to prevent leakage, dripping, spilling or other discharge of grease wastes on any public or private property.
2. No person shall collect, transport or handle any hazardous material (as defined in any applicable EPA standard) in any vehicle used for grease waste handling.
3. In the event that the discharged effluent from the facility continuously exceeds the City’s FOG discharge limits of one hundred (100) mg/L, or if the City’s sewer system is adversely affected by the discharges, then the City may require installation of a grease trap, grease interceptor and/or additional pretreatment devices to ensure adequate removal of FOG. (Ord. 2351, 2018)