Screen trap performance with depth measurements of FOG and solids

https://wiki-fusion.win/index.php/From_Examinations_to_Pump-Outs:_Grease_Trap_Service_Methods_Dining_Establishments_Depend_On

Monitor trap efficiency with depth measurements of FOG and solids, triggering pump-outs at 25% capability to maintain efficiency, avoid nasty odors, and meet most local pretreatment standards.