Patent ID: 6929425

Claim:
An erosion control system comprising: a flexible erosion control matting including no powdered or granular water absorbent material, and further including a single core layer comprising randomly oriented fibers, and forming a substantially flat upper surface and a substantially flat lower surface; an externally disposed biaxial geogrid material fastened to and located on the substantially flat upper surface of the single core layer; and an externally disposed grid-like netting material fastened to and located on the substantially flat lower surface of the single core layer; the biaxial geogrid material being physically different in structure from the grid-like netting material; and the flexible erosion control matting structured to resist trapping of sediment within the matting and to allow flowing particulate matter to pass freely over the matting during a hydraulic event in order to control erosion of a substantially unvegetated sloped surface when the matting is placed on a substantially unvegetated sloped surface.