A contaminated site is a site at which a hazardous substance occurs at concentrations above background levels and where assessment indicates it poses or could pose if land use is changed, an immediate or long term risk of harm to human health or the environment.
- Polychlorinated biphenyls (PCB's);
- Organochlorine pesticides (OCP's);
- Heavy metals such as arsenic, lead, chromium, cadmium and mercury; and,
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