Monitor trap efficiency with depth measurements of FOG and solids

https://zulu-wiki.win/index.php/From_Inspections_to_Pump-Outs:_Grease_Trap_Service_Techniques_Dining_Establishments_Rely_On

Display trap performance with depth measurements of FOG and solids, activating pump-outs at 25% capability to maintain performance, avoid nasty odors, and meet most community pretreatment standards.