Patent ID: 7544016

Claim:
A sediment control device (SCD) comprising 1) an elongate threshold member having a multiplicity of relatively large threshold apertures therethrough; 2) an elongate outflow member having a multiplicity of relatively large outflow apertures therethrough; 3) an elongate filter which has a multiplicity of relatively small filter apertures therethrough, and 4) a location member; the threshold member, outflow member, filter and location member being secured together so that, when the location member is placed on a horizontal substrate, (a) an upright member comprising the threshold member, the filter and the outflow member extends upwards from the substrate, and (b) liquid flowing over the location member towards the upright member passes through the threshold member, the filter and the outflow member; the upright member including an elongate sediment collection chamber (SCC) between the threshold member and the outflow member, the SCC having (i) a cross-section whose height is p times its maximum width, where p is at least 1.5, and (ii) an unobstructed volume which is at least 5% of the total volume of the SCD.