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Technical Advisory Group
A Technical Advisory Group (TAG) consisting of scientific and technical experts from government, industry, environmental organizations and consultant groups, was formed in December 1998 to act as a resource to Environment Canada for identifying and resolving issues of a scientific, technical and process nature that emerge from the implementation of the Categorization Program. The TAG has met several times since it was established. The TAG also assisted in establishing technical Working Groups (WG) used to assemble experts to provide advice and recommendations for specific issues or tasks as required.
Technical Advisory Group Members
Roger Breton
Peter Chapman
Robert Chenier
Christina Cowan-Ellsberry
Pat Doyle
John Gannon
Frank Gobas
Geoff Granville
Kapil Khatter
Mark Lewis
Richard Purdy
Susan Sang
Adam Socha
Roger Sutcliffe |
Environment Canada
EVS Environmental Consultants
Environment Canada
Proctor and Gamble
Environment Canada
DuPont Life Science Enterprise
Simon Fraser University
Shell Canada Limited
Canadian Association of Physicians for the Environment
Environment Canada
Independant Ecotoxicologist
World Wildlife Fund Canada (WWF-Canada)
Ontario Ministry of Environment
Environment Canada |
QSAR Workshop
As recommended by the TAG, an international Workshop on Quantitative Structure
Activity Relationships (QSARs) hosted by Environment Canada was held in Philadelphia
in November 1999, to address the issue of predicting the properties and
effects of chemicals based on structure. Since existing experimental persistence,
bioaccumulation and ecotoxicity data are only available for a small number of
the substances on the DSL, tools such as Quantitative Structure Activity Relationships
(QSARs) may be used to predict these end points. Each QSAR has limitations in
terms of reliability of the predictions and since there exist many types or
classes of substances on the DSL, the selection of a QSAR and the use of expert
judgment is important in categorizing substances, in particular “difficult substances”
(e.g., pigments, polymers, ionic surfactants). Therefore, the identification
of the most reliable methods is required. As a result, an international expert
QSAR workshop involving 27 participants was organized by Environment Canada
on November 11-12th, 1999, in Philadelphia, Pennsylvania, to address these challenges.
Proceedings of the Workshop are now available from the Existing Substances Division.
Inorganics Working Group (IWG)
The IWG is responsible for recommending a practical approach for categorizing and screening inorganic substances on the DSL. A report is being prepared that provides recommendations for categorization of inorganic substances relative to the criteria for persistence, bioaccumulation, in accordance with the Persistence and Bioaccumulation Regulations, and inherently toxic to non-human organisms in which a definition is currently being developed. A pilot study will be conducted to evaluate the effectiveness of these recommendations using a representative sample of the inorganic substances on the DSL. Results from the pilot study on inorganic substances will be considered in the development of a Technical Guidance Document for the categorization of the inorganic substances. Recommendations for conducting screening level risk assessments for inorganic substances will also be provided by the IWG.
Maya Berci
Peter Campbell
Margaret Cavanaugh
Peter Chapman*
Pat Doyle*
Christian Gagnon
James Hickey
Jim McGeer
Kate Reagan
Jim Skeaff
Adam Socha
Pamela Welbourn
* - co-chairs. |
Environment Canada
University of Quebec, Canada
National Science Foundation, USA
EVS Consultants, Canada
Environment Canada
Environment Canada
U.S. Geological Survey, USA
Natural Resources Canada
NiPERA, USA
Natural Resources Canada
Ontario Ministry of Environment
Welbourn Consulting, Canada
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