Remediation of PCB-Contaminated Sediments in Lake Järns Jon, Emän River System, Sweden

摘要: Jarnsjon, a lake in the Swedish river Eman, contains approx. 400 kg of PCB which is slowly leaching out from sediments. An analysis program has shown that Jarnsjon sediments are primary source for ongoing discharge to river. Based on current yearly 7 PCB, will cause problems during several decades. The Eman classified as resource national importance. Remediation necessary if continued damage be avoided. However, remedial activities can lead an additional load Eman. Restrictions such releases remediation therefore stringently applied. The feasibility remediating been examined number studies carried by EPA together with different universities, institutes and consulting companies. A alternative selected. This includes vacuum dredging within protective barrier silt screens. Dredged material dewatered disposed special landfill. action estimated cost appr. 40 million kronor. (6 - 8 dollars). The started concluded 1994.