The test hole excavation is done by hand. Heavy machinery that could damage the lawn is not involved. After the inspection the test holes are filled up, the sod is carefully placed back and tamped into place. The following are generally all the tools needed:
A septic tank/bed system has two essential components: the septic tank and the septic bed. The septic tank retains solids and floatable materials. The solids sink to the bottom of the tank and the scum rises to the surface of the liquid. The sewage effluent is then conveyed to the septic bed where air dependent bacteria will break down and solidify dissolved organic substances.