A porous synthetic fabric, used in underground storage tank excavations, to provide a barrier between different types of soil, or between backfill and adjacent soil.
Groundwater can move through filter fabrics; sand and gravel cannot.
A porous synthetic fabric, used in underground storage tank excavations, to provide a barrier between different types of soil, or between backfill and adjacent soil.
Groundwater can move through filter fabrics; sand and gravel cannot.