Assessment and Refinement of Ecotoxicity Methods for Development of Tier 2 Soil Eco-contact Standards and Application to Site-specific Risk Assessments (Tier 3)

Gladys Stephenson

Terrestrial ecotoxicity assessments provide toxicity data for the
soil eco-contact pathway for contaminants
• Used as a tool for:
– New chemical evaluation (spiked soil)
– Development of national or provincial soil quality guidelines
Provision of site-specific toxicity in support of site-specific ecological
risk assessments
Used to assess:
• risk to ecological receptors, and/or
to develop site-specific soil quality guidelines or remedial
objectives (e.g., Tier 3)

2007 Stantec_Tier 2 Soil EcoContact Site Specific Risk Assessments Presentation