Rapid screening of substances of lower ecological concern: legislative context

Legislative context

During the categorization of substances on the Domestic Substances List (DSL), Environment Canada has identified a subset of the substances meeting the criteria set out under paragraph 73(1)(b) of the Canadian Environmental Protection Act, 1999 (CEPA 1999) that are expected to have a low likelihood of causing harmful ecological effects, as it is believed that low volumes are in commerce.

Environment Canada has developed a pragmatic approach to conducting a screening assessment under section 74 for substances that have a low likelihood of meeting the criterion set out in paragraph 64(a) of CEPA 1999. Under paragraph 64(a), a substance is considered "toxic" if it is entering or may enter the environment in a quantity or concentration or under conditions that have or may have an immediate or long-term harmful effect on the environment or its biological diversity.

This assessment presents the results of application of this technical "rapid screening" approach to 1066 substances that are persistent and inherently toxic to non-human organisms (PiT(eco)) or bioaccumulative and inherently toxic to non-human organisms (BiT(eco)), and that are believed to be in commerce in Canada at a maximum of 1000kg per year across the country.

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