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Environmental and Workplace Health

Federal Contaminated Site Risk Assessment in Canada, Part II: Health Canada Toxicological Reference Values (TRVs) and Chemical-Specific Factors, Version 2.0

2010
ISBN: 978-1-100-17925-4
Cat.: H128-1/11-638E-PDF

This guidance document (Federal Contaminated Site Risk Assessment in Canada, Part II: Health Canada Toxicological Reference Values (TRVs) and Chemical-Specific Factors, Version 2.0) is a companion to Federal Contaminated Site Risk Assessment in Canada, Part I: Guidance on Human Health Preliminary Quantitative Risk Assessment (PQRA), Version 2.0, and was prepared to provide guidance for custodial departments.

Toxicological reference values (TRVs) are prescribed by a variety of national and international agencies for the purpose of characterizing risks associated with exposure to environmental contaminants. For the assessment of risks posed by chemicals and substances found at federal contaminated sites in Canada, Health Canada TRVs should be employed, when available, for the characterization of potential health risks.

Significant technical revisions to this document include:

  • significant additions to the text to enhance background and contextual information, including links to sources of toxicological reference values (TRVs) from other agencies;
  • new procedures for establishing TRVs for essential trace elements, with explanatory text;
  • additions of new or revised TRVs to Table 1. Toxicological Reference Values (TRVs) Recommended for use in Human Health Risk Assessments of Federal Contaminated Sites;
  • addition of Table 2. Toxicological Reference Values (TRVs) for Pesticides Recommended for Use in Human Health Risk Assessments of Federal Contaminated Sites;
  • addition of Table 3. Soil Dermal Relative Absorption Factors (RAFDerm) of Selected Chemical Substances; and
  • addition of Table 4. Sources of Physical-Chemical Property Data in the Health Canada PQRA Spreadsheet Tool.
The Federal Contaminated Sites Action Plan (FCSAP) is a program of the Government of Canada designed to ensure improved and continuing federal environmental stewardship as it relates to contaminated sites located on federally owned or operated properties.