SEWAGE DEPARTMENT TRAINING PROGRAM
How to Repair an Elevated Sandmound
There are many things that can cause an elevated sandmound to fail. This program only deals with failures caused by a semi-permeable or impermeable layer forming at the aggregate/sand interface. Such an layer impedes effluent from flowing through the sand and results in the effluent ...
Forcing its way out of the top or side of the mound, or
Backing up in the system, or
Producing excessive pressure causing premature failure of the effluent pump.