Patent ID: 7955030

Claim:
An assembly which comprises (1) an elongate channel along a boundary of an area of ground, and (2) a sediment control device (SCD) which comprises (a) a substantially planar seat portion which fits into the channel, and (b) a substantially planar free portion which extends upwards from the channel and which comprises (i) an elongate threshold member, (ii) an elongate outflow member, and (iii)) an elongate filter member between the threshold and outflow members, the SCD having a total volume, and the threshold and outflow members being secured together so that any hollow space between the threshold and outflow members is less than 30% of the total volume of the SCD, each of the threshold and outflow members having multiple relatively large apertures therethrough, the filter member having multiple relatively small apertures therethrough, the relatively small apertures being smaller than the relatively large apertures, and the seat portion and the free portion being substantially coplanar.