What the FOG Program actually is
The City of Los Angeles Bureau of Sanitation FOG (Fats, Oils, and Grease) Control Programis a regulatory framework — backed by the city municipal code — that applies to every Food Service Establishment (FSE) that discharges into the city sewer system. It exists because FOG from commercial kitchens is the number one cause of sanitary sewer overflows (SSOs) in Los Angeles.
The program is administered by the LA Sanitation and Environment (LASAN) branch of the Bureau of Sanitation. They have enforcement authority separate from LACDPH health inspectors — meaning you can be fully compliant on a health inspection and still face an FOG enforcement action from LASAN for inadequate grease management. Both agencies can cite you. Both can fine you.
The program also operates in coordination with the LA Regional Water Quality Control Board, which oversees water pollution standards. An SSO caused by your FOG discharge can involve all three agencies.