It is recommended that, all grease removal devices should be maintained regularly so that the depth of floating FOG and settled solids accumulation do not exceed 25% of the hydraulic length, at any time. Thereby, the working depth of each device stays more than 75% for effective FOG separation. All grease removal devices shall be maintained to ensure compliance with CVSan’s discharge limits for oil and grease in accordance with CVSan Code Section 6206. As per CVSan Code Section 6216, the minimum cleaning frequency required for all grease interceptors is 6 months. Some establishments will find it necessary to clean their interceptors more often than what is required by the Code.