EESA10H3 Lecture Notes - Lecture 10: Canada Council, Risk Assessment, Exposure Assessment
Document Summary
Risk: possibility or probability of suffering harm from a hazard. Help identify risks that are easily reduced or eliminated. Help clarify what is known and not known about a situation. Health canada: regulations for foods and drugs. Canada council of ministers of the environment: national contaminated sites program, canada wide environment standards (cwes) Ontario ministry of environment: site specific clean up guidelines for contaminated soils. Cepa (canadian environmental protection agency: 23 000 substances currently in use, persistent, bioaccumulation, toxic. Framework: problem definition, identify contaminant, receptor analysis, pathways analyses, exposure assessment, toxicity assessment, risk characterisation, uncertainties, critique, problem. Single compounds or complex mixture with a few compounds driving toxicity. Contaminated soil, and/or air pollution, and/or water: identify. Contaminant: receptor analysis organism, species, or groups of species exposed to stressor. Quantify amount of exposure (dose) through methods: measurements (how representative) and modeling: exposure. Quantify exposure from air (indoor/outdoor), water (drinking, showering, etc.
