Grease Trap Cleaning Santa Monica CA under Chapter 5.20 wastewater rules
Santa Monica runs its own sewer system and its own discharge rules. Commercial kitchens fall under Chapter 5.20 of the Santa Monica Municipal Code, Industrial Wastewater Control, which is administered by the Public Works Director. The chapter bans floatable fats, oils and grease (FOG) from the sewer, sets a 600 mg/l limit for dispersed oil and grease, and requires food service establishments to run their kitchens in a way that avoids grease blockages in city lines.
Section 5.20.110 is the part kitchen managers should know. It says waste cooking oil goes into containers from a rendering company, not down a drain, and it prohibits food waste disposal units that discharge to the sewer. It also requires a floor mat wash area that drains to the sanitary sewer rather than a storm drain, and it lets the city require best management practices (BMPs) when a site sends too much grease downstream.
Under the code, a gravity grease interceptor (GGI) is a device of at least 300 gallons with two or more compartments, baffles and at least thirty minutes of retention. A hydromechanical grease interceptor (HGI) can be used only with the Director's approval, usually through a variance where a GGI is not feasible. Sites that discharge industrial wastewater need an industrial wastewater permit, and monitoring records must be kept for three years. We recommend keeping every pumping manifest at least that long. The industry standard is to pump before solids and floating grease fill about 25 percent of the device, and our grease interceptor pumping schedules are built around that mark.
Santa Monica's wastewater flows to the City of Los Angeles Hyperion plant under a contract, and the State Water Board's statewide sanitary sewer systems order expects local agencies to control FOG as part of their sewer management plans.