Enkadrain 3811R is one of a new generation of environmentally conscious Enkadrain products. This drainage composite consists of a post-industrial recycled polypropylene drainage core of fused, entangled filaments and a geocomposite fabric bonded to one side. The entangled filaments are molded into a square waffle pattern that maintains the flexible design of other Enkadrain products. The recycled polypropylene makes the product slightly stiffer, yet still flexible to conform to any surface profile. Initial testing indicates that flow rates exceed the original HDPE (High Density Polyethylene) Enkadrain products by an average of 130%. Although Enkadrain 3611R is the lighter weight of the new recycled content Enkadrains, it provides very high flow rates suitable for most residential and commercial applications. This product, because it exceeds 40% post-industrial recycled content, can help contribute up to 2 LEED points when used in conjunction with other recycled content products. Enkadrain 3611R can contribute towards additional LEED points when used with a Green Roof by reducing stormwater runoff, heat islands and energy consumption.