Ah yes, the memories............
Digging those sort of pits - grease traps, absorbtion pits, septic tanks etc all had a part in me opting to become an electrician.
As a kid I had the choice of plumbing & draining or electrician. I tried plumbing & did nothing but dig pits so I jumped straight to to electrical apprenticeship where I got to dig DEEPER
trenches for mains, sub ccts etc.
After I left the plumber he decided it was easier to bring in a backhoe to dig all the pits & drainage trenches - the rotten mongrel.
"Can ya dig it?"