Barrier: The use of a geosynthetic material to prevent the migration of liquids or gases. Containment: The use of a geosynthetic material to contain soil or sediments to a specific geometry and prevent its loss. The contained fill takes the shape of the inflated at-rest geometry of the geosynthetic container. Drainage (a.k.a. transmission): The use of a geosynthetic material to collect and transport fluids. Filtration: The use of a geosynthetic material to allow passage of fluids from a soil while preventing the uncontrolled passage of soil particles.
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