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… mixtures of PCBs. Heptachlor – Primarily employed to kill soil insects and termites, heptachlor has also been used more …

… mercury inventory, 65 per cent of mercury releases to soil came from informal waste management, including informal … Levels – the concentration of a contaminant in the soil that does not imply a risk to human health and the … transboundary movement of waste, contaminated sites, soil and water protection, air pollution control, and other …