“Best management practices” means a technique or methodology that, through experience and research, has proven to reliably lead to a desired result.

“Director” means the Director of Public Works, or any duly authorized representative or agent of such Director. Those portions of this chapter that invoke the plumbing code (in Chapter 16.04 IMC) or other building improvements are delegated to the Building Official.

“Facility” means any food processing establishment, food sales establishment, food service establishment, laundry, car wash, automotive fueling, commercial garage, quick-lube stations, auto detail, automotive and equipment repair, automotive service shop, businesses using steam or pressure washers, or any other business that routinely discharges fats, oil or grease into the sanitary sewer system as part of a business operation.

“Fats, oils and greases” means organic compounds derived from animal, vegetable, petroleum or mineral origin that contain multiple carbon triglyceride molecules. These substances are detectable and measurable using analytical procedures established in Title 40 of the Code of Federal Regulations Part 136 (40 CFR 136). Fats, oil or grease are either polar (animal or vegetable origin) or nonpolar (petroleum or mineral origin).

“Food” means any raw, cooked, or processed edible substance, or ingredient used or intended for use or sale in whole or in part for consumption.

“Food grinder” means any device in the plumbing or sewage system of the facility for the purpose of grinding food waste or food preparation by-products for the purpose of disposing in the sewer system.

“Food processing establishment” means a commercial establishment in which food is manufactured or packaged for consumption.

“Food sales establishment” means retail and wholesale grocery stores, retail seafood stores, food processing establishment, bakeries, confectioneries, fruit, nuts and vegetable stores and places of business and similar establishments, mobile or permanent, engaged in the sale of food primarily for consumption off premises.

“Food service establishments” means any establishment that prepares and/or serves meals, lunches, short orders, sandwiches, frozen desserts, or other edible products and/or is required to have a Food Business Permit issued by King County Department of Health. The term includes: restaurants, cafeterias, short order cafes, luncheonettes, taverns, lunchrooms, places which manufacture retail sandwiches, soda fountains, institutional cafeterias, catering and home based food establishments, food vending vehicles, and operations connected therewith; and similar facilities by whatever name called.

“Governing agency” means the City of Issaquah Sanitary Sewer Utility, which provides sanitary sewer service to the facility.

“Gravity grease interceptor (GGI)” means a plumbing appurtenance or appliance that is installed in a sanitary drainage system to intercept nonpetroleum fats, oils, and greases (FOG) from a wastewater discharge and is identified by volume, 30-minute retention time, baffle(s), a minimum of 2 compartments, a minimum total volume of 300 gallons, and gravity separation. These interceptors are designed by a registered professional engineer. Gravity grease interceptors are generally installed outside. Sizing criteria set forth in the current adopted plumbing code.

“Grease” means rendered animal fat, vegetable shortening, and other such oily matter used for the purposes of and resulting from preparing and/or cooking food.

“Grease interceptor” means an appurtenance or appliance that is installed in a sanitary drainage system to intercept nonpetroleum fats, oil, and grease (FOG) from wastewater. There are two types of grease interceptors: gravity grease interceptors and hydromechanical grease interceptors.

“Hydromechanical grease interceptor (HGI)” means a plumbing appurtenance or appliance that is installed in a sanitary drainage system to intercept nonpetroleum fats, oils and grease from a wastewater discharge and is identified by flow rate, and separation and retention efficiency. The design incorporates air entrainment, hydromechanical separation, interior baffling, and/or barriers in combination or separately, and one of the following:

“Nonpolar” means any water or waste of petroleum or mineral origin which contains more than 100 parts per million by weight of fat, oil or grease as measured using analytical procedures established in 40 CFR Part 136.

“Oil/water separator” means a large capacity underground vault installed between a drain and the connecting sewer pipe designed to remove nonpolar oil (petroleum or mineral-based) from the waste stream. These vaults are designed with baffles or coalescing plates to trap sediments and retain floating oils. The large capacity of the vault slows down the wastewater, allowing oil to float to the surface and solid material to settle out. Businesses that require oil/water separators include but are not limited to, quick-lube stations, transportation fueling facilities, vehicle/heavy equipment repair, and potentially businesses using steam or pressure washers.

“Polar” means any water or waste of animal or vegetable origin which has visible fats, oils or grease floating on the surface or adhering to the sides of the sample containers.

“Remodel” means any modification to an existing facility that involves an expansion of the kitchen area or change in kitchen plumbing or drainage fixture units.

“Rendering/disposal company” means a business that possesses a King County pumper certification.

Twenty-Five Percent Rule. Requirement for grease interceptor to be cleaned when 25 percent of its volume is occupied by accumulated grease and solids.

Uniform Plumbing Code (UPC). Governs the requirements for the installation, alteration, removal, replacement, repair or construction of all plumbing, as adopted under Chapter 16.04 IMC.

“User” means any person, who contributes, causes or permits the contribution of wastewater into the governing agency’s sanitary sewer system. (Ord. 2716 § 2 (Exh. A1), 2014; Ord. 2612 § 2 (Exh. A1), 2011).