Guidance On Assessment And Remediation Of Contaminated Sediment Problems In The Great Lakes

This report reviews and evaluates technologies for the remediation of contaminated sediments. It is not intended to be a cookbook which tells the reader what must be done for each area being considered. It does, however, critically evaluate each technology and provide guidance on choosing a particular option. Although precise costs could not be ascribed to each technology, dollar ranges based where possible on actual costs are provided. In addition, the factors or parameter affecting the cost of a particular technology are discussed. This report is one of two documents which present guidance on contaminated sediment issues. The companion report, prepared by the Assessment Work Group, examines the methods for assessing the nature, severity and extent of imparment due to contaminated sediments. This information is essential prior to examining and choosing remedial options.

In this text, drawn from presentations and discussion at a May 2005 NATO Advanced Research Workshop, current approaches to the assessment and remediation of contaminated sediments are discussed with emphasis on in-situ management. The text addresses physical, chemical and biological approaches for the assessment and remediation of sediments. The development of regulatory and strategic approaches is discussed with emphasis on the potential for biological remediation in the management of contaminated sediments.

This interim report reviews the following: what is known about contaminated sediment in the Great Lakes; the physical & biological processes related to contaminated sediment in the aquatic environment; the ecological effects of contaminated sediment; ecological improvements resulting from sediment remediation in Sweden, Japan, and the Hudson River; sediment remediation projects in the Great Lakes; case studies of sediment remediation & associated ecological benefits in Waukegan (Illinois) Harbour and Black River, Ohio; and the links between contaminated sediment & ecological damage. The final section draws conclusions & makes recommendations regarding the need for monitoring & further research.