![]() Summary:A large-scale field experiment on in situ thin-layer capping was carried out in the polychlorinated dibenzodioxin and dibenzofuran (PCDD/F) contaminated Grenlandsfjords, Norway. Keywords:Remediation, Field Demonstration, Thin-Layer Placement, Monitoring “ Large-Scale Field Study on Thin-Layer Capping of Marine PCDD/Fcontaminated Sediments in Grenlandfjords, Norway: Physicochemical Effects.” Environ. Gerard Cornelissen, Katja Amstaetter, Audun Hauge, Morten Schaanning, Bjørnar Beylich, Jonas S. Prescribed remedy is placement of 15 – 20 cm layer of clean sand over defined contaminated hot spots. Thin layer sand cap provided ability to achieve adequate risk reduction and to provide enhanced natural recovery of the site. Presence of higher levels of contamination at depth and risk of resuspension were concerns with dredge options. Options considered included dredging and capping alternatives. Sediments not toxic to benthic organisms, but affect upper trophic community including reproductive success of bottom feeding fish. Investigations dating back to 1980 have measured elevated mercury and PCBs in Cove sediments. ![]() Marathon Pulp and Paper filed for bankruptcy in 2009 and ceased operation. Summary:Principal discharges resulted from untreated pulp mill effluent and treated effluent from a chlor-alkali plant which operated from 1977 to 1984. “ Implementation of a Thin Layer Cap on Lake Superior in Marathon, Ontario” Presenation RPIC-FCS Workshop April 14-16, 2014 Ottawa Wilson, David Rudolfo, Nicholas’ Noble, Bruce Lally, John Hewitt, Ronald Kim, Kay Grover, Barry.
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