In 1989, Hydro-Québec began a study program on pentachlorophenol (PCP), with a view to ensuring safe management of the product at all stages of its utilization. The topics under study include storage of treated poles, behavior of PCP in the environment, soil decontamination, water treatment, characterization and disposal of treated wood waste, and assessment of substitutes. This paper summarizes the progress made in each of these study areas, and gives a brief overview of the results, both obtained and expected.

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