US Patent 10407891 Berm and filter system

A sediment control device includes an under-seal gasket, a threshold member, a filter member, and a berm extending upwards from the top surface of the under-seal gasket. The under-seal gasket includes a first central opening, and the filter member includes a second central opening smaller than the first central opening. The threshold member and the filter member are attached directly to the bottom surface of the under-seal gasket, but are not attached to each other. The threshold member extends across the first and second central openings and includes a plurality of apertures. The berm includes an elongated cylindrical foam member that surrounds a perimeter of the first central opening.