Author(s)

C. Färm, D. Johansson, Z. Kadic & S. Waara

Abstract

Characterization of sediment from storm water tunnels C. Fiirm, D. Johansson, Z. Kadic & S. Waara Department of Public Technology, Malardalen University, Sweden Abstract Tunnels used for storm water were constructed in several cities in Sweden and other countries during the 1970s. In addition to the importance of the hydraulic function of the tunnel, the environmental aspects of the storm water flowing out into the recipient as well as the contamination of the accumulated sediment in the tunnel are very important factors to consider regatding the operation and maintenance of the tunnel. Sediment accumulated in the tunnel should eventually be removed and depending upon contaminant level it could be used as soil or it has to be safely disposed of. In the city of Vasterls, Sweden, four storm water tunnels were constructed in the beginning of the 1970s. This paper describes a physical and chemical characterization of sediments from three of the tunnels as well as an evaluation of the potential toxi

Keywords