Monitor trap performance with depth measurements of FOG and solids

https://touch-wiki.win/index.php/The_Homeowner%27s_Guide_to_Budget_plan_Sewage-disposal_Tank_Emptying_and_Upkeep

Screen trap performance with depth measurements of FOG and solids, triggering pump-outs at 25% capability to maintain efficiency, prevent nasty odors, and meet most community pretreatment requirements.