I was delighted to be called back to help out a customer I saw last year with a new project.
They needed a modest absorption trench constructed, so we got busy and dug a twenty meter trench, then laid in slotted ag pipe and covered it with a couple of tonnes of 20mm crushed rock that I hauled up from Goulburn. We placed geotextile on top of the rock to keep the top soil out of it, then backfilled the trench with the spoil from the excavation.
It was a simple project and fun work.