Risk assessment of schedule 1 substances
"A substance is 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;
- constitute or may constitute a danger to the environment on which life depends; or
- constitute or may constitute a danger in Canada to human life or health." (Section 64).
| Substance | Risk |
|---|---|
| (4-Chlorophenyl)cyclopropylmethanone, O-[(4-nitrophenyl)methyl]oxime | a |
| 1,1,1-Trichloroethane | a |
| 1,2-Dichloroethane | c |
| 1,3-Butadiene | b and c |
| 2-Butoxyethanol | c |
| 2-Methoxyethanol | c |
| 3,3'-Dichlorobenzidine | c |
| Acetaldehyde | b and c |
| Acrolein | c |
| Acrylonitrile | c |
| Ammonia dissolved in water | a |
| Benzene | c |
| Benzidine and benzidine dihydrochloride | c |
| Bis(2-ethylhexyl) phthalate | c |
| Bis(chloromethyl) ether | c |
| Carbon Dioxide | b |
| Chlorinated wastewater effluents | a |
| Chlorobiphenyls | a, b and c |
| Chloromethyl methyl ether | c |
| Creosote-impregnated waste materials from creosote-contaminated sites | a |
| Dichloromethane | a and c |
| Effluents from pulp mills using bleaching | a |
| Effluents from textile mills that use wet processing | a |
| Ethylene oxide | c |
| Formaldehyde | b and c |
| Gaseous ammonia | c |
| Hexachlorobenzene | c |
| Hexachlorobutadiene | a |
| Hexavalent chromium compounds | a and c |
| Hydrofluorocarbons | b |
| Inorganic arsenic compounds | a and c |
| Inorganic cadmium compounds | a and c |
| Inorganic chloramines | a |
| Inorganic fluorides | a |
| Methane | b |
| N-Nitrosodimethylamine | c |
| Nitric oxide | a and c |
| Nitrogen dioxide | a and c |
| Nitrous oxide | b |
| Nonylphenol and its ethoxylates | a |
| Oxidic, sulphidic, and soluble inorganic nickel compounds | a |
| Ozone | a and c |
| Particulate matter containing metals that is released in emissions from copper smelters or refineries, or from both | a and c |
| Particulate matter containing metals that is released in emissions from zinc plants | a and c |
| Pentachlorobenzene (QCB) | a |
| Perfluorocarbons | b |
| Polychlorinated dibenzodioxins and polychlorinated dibenzofurans | a and c |
| Polycyclic aromatic hydrocarbons | a and c |
| Refractory ceramic fibres | c |
| Respirable particulate matter less than or equal to 10 microns | c |
| Sulphur dioxide | a and c |
| Sulphur hexafluoride | b |
| Tetrachlorobenzenes (TeCBs) | a |
| Tetrachloroethylene | a |
| Tributyltetradecylphosphonium chloride | a |
| Trichloroethylene | a and c |
| Volatile organic compounds that participate in atmospheric photochemical reactions | a and c |