Patent ID: 7008144

Claim:
A sediment control roll which comprises 1) an elongate threshold member having a multiplicity of threshold apertures therethrough, each of the threshold apertures having an area of 0.01 to 1.0 in 2 ; 2) an elongate outflow member having a multiplicity of outflow apertures therethrough, each of the outflow apertures having an area of 0.01 to 1.0 in 2 ; and 3) an elongate outflow filter which (i) lies between the threshold member and the outflow member, and (ii) has a multiplicity of filter apertures therethrough, each of the filter apertures having an area of less than 0.01 in 2 ; the sediment control roll comprising a substantially hollow, elongate sediment collection chamber which lies between the threshold member and the outflow filter.