Protocol for the Derivation of Environmental and Human ... - CCME

Residential/Parkland Land Use
Sensitive Receptor: child (threshold contaminants)
adult (non-threshold contaminants)
Exposure Period:
24 hours/day
365 days/year
Direct Soil Exposure Pathways:
• direct soil ingestion
• direct soil dermal contact
• direct soil particulate inhalation
Indirect Soil Exposure Pathways:
• groundwater as drinking water
• infiltration of volatile contaminants into indoor air via basements
The above check mechanisms are calculated. If check modelling procedures indicate an
unacceptable exposure, the soil quality guideline is lowered.
Other calculations (included in assessment document)
residential land with backyard garden:
• consumption of backyard garden produce
assumption:
• 10% of produce ingested grown on-site
Figure 21
Exposure Assumptions for Defined Residential/Parkland Land Use Scenario
94