"Contaminant Migration From Cement-Based Solidification/Stabilization (S/S) Materials"
By: Craig Lake, B.Eng (TUNS), PhD (University of Western Ontario), Associate Professor, Dalhouse University
Abstract
The use of solidification/stabilization (S/S) in Canada is becoming more frequent as a source-controlled management method for contaminated sites. Cement-based S/S is considered an established technology by the United States Environmental Protection Agency (USEPA). Over the 20 year period of 1982-2002 S/S was selected as a treatment for 24% of all sites treated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Currently the technology is being used in the remediation of the Sydney Tar Ponds in Cape Breton, Nova Scotia. This presentation will provide a brief overview of the Sydney Tar Ponds project as it relates to the s/s treatment of the contaminated sediments. The presentation will also discuss research being performed at Dalhousie related to the cement-based s/s treatment of contaminated soils.
Biography
Dr. Lake has been involved in geo-engineering research and practice for over 15 years. He is currently an Associate Professor in the Department of Civil and Resource Engineering at Dalhousie University in Halifax Nova Scotia. Prior to Dalhousie, he was employed with Jacques Whitford and Associates (now Stantec). He has consulted on a wide variety of geotechnical infrastructure projects such as highways, commercial developments, waste disposal facilities and offshore structures. His current consulting project relates to expert witness testimony for pending litigation of a non-functioning water reservoir. Dr. Lake’s research relates to geo-environmental engineering with a focus on containment barrier evaluations and design. In collaboration with Dr. Rowe, he has contributed to fundamental developments for diffusion testing of Geosynthetic Clay Liners. Recently he has initiated research work at Dalhousie related to contaminant migration performance testing of cement-based barrier systems. He is currently technical co-chair of the International S/S Technology Forum to be held in Sydney, Nova Scotia in June 2010.
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