Control of Ground Water

This can take one of two forms which are usually referred to as temporary and permanent exclusion.

Permanent Exclusion: this can be defined as the insertion of an impermeable barrier to stop the flow of water within the ground.

Temporary Exclusion: this can be defined as the lowering of the water table and within the economic depth range of 1500 can be achieved by subsoil drainage methods, for deeper treatment a pump or pumps are usually involved
.
Simple Sump Pumping: suitable for trench work and/or where small volumes of water are involved.