Characterization of solids transferred into sewer trunks during wet weather

Describes the selection of parameters used to characterize sewer sediments in trunk sewers. Different sampling and measurement methods were compared for a number of sites in France. The sampling arrangement used in the Bequigneaux retention basin in Bordeaux is described as an example of the methods used. Preliminary results are reported in terms of size, vertical settling velocity and density of suspended solids. Pollution reduction obtained by the settlement of solids is reported. (from authors' abstract)