Over the years, I have seen a lot of access problems associated with sewage tanks, including septic, pump and aerobic tanks. As a part of any management program, regular maintenance of tanks must be performed. Some regulatory agencies require either periodic inspection or regular solids removal. Cleaning a septic tank properly requires access through a manhole or manholes that allow access to all corners or compartments of the tank.
This requires an opening at least 20 inches in diameter, allowing cleaning and inspection of the tank as a part of regular maintenance, as well as access to inspect tank baffles. In
