The Ultra-Pipe Sock is engineered using UltraTech’s Ultra-X-Tex, a durable geo-textile filter media that allows large volumes of water to pass through while absorbing liquid hydrocarbons including petroleum, animal and vegetable oils, and other liquid contaminants. This makes it a perfect material for filtering contaminants from a water source and controlling erosion. Helps comply with NPDES, 40 CFR 122.26 (1999) when used as Best Management Practice in Storm Water Pollution Prevention Plans.