Monitor trap efficiency with depth measurements of FOG and solids

https://atomic-wiki.win/index.php/The_Ultimate_Guide_to_Grease_Trap_Cleaning_for_Commercial_Properties_and_Busy_Kitchens_42922

Monitor trap performance with depth measurements of FOG and solids, activating pump-outs at 25% capability to maintain performance, prevent foul odors, and meet most local pretreatment requirements.