Geotex 1601 is a polypropylene, staple fiber, needlepunched nonwoven Geotextile. The fibers are needled to form a stable network that retains dimensional stability relative to each other. The Geotextile is resistant to ultraviolet degradation and to biological and chemical environments normally found in soils. Geotex 1601 conforms to the property values listed below which have been derived from quality control testing.