Traduction de «toxicité pour l'environnement » (Français → Anglais) :

A definition of toxicity under CEPA that recognizes the inherent toxicity of a chemical would provide a foundation to address the other bases that are needed to build sound environmental protection legislation.

(Return tabled) Question No. 159 Mr. Sean Casey: With respect to the considered cuts to Environment Canada: (a) which specific departments and programs are affected, and what was the process taken to determine whether or not to make cuts to a specific department and program, (i) what, if any, Environment Canada Research Scientists were consulted regarding the considered cuts, (ii) what scientists outside of Environment Canada were consulted, (iii) for each department and program specified in (a), what is the number of current full-time, part-time, and contract scientific positions, (iv) the number of full-time, part-time, and contract sc ...[+++]ientists who have been given “workforce adjustment” letters, (v) the number of full-time, part-time, and contract scientists who are going to be moved out of their current “job function”, (vi) what, if any, consideration has been given to shutting-down the Integrated Atmospheric Deposition Network (IADN), and, if so, has the United States been consulted, as Canada has commitments under the Great Lakes Water Quality Agreement, (vii) specify all programs run by a single scientist who has been given a “workforce adjustment” letter, and for each program identified, what, if any, concern was expressed regarding the ability of the program to continue, (viii) the process that will be taken to place scientists in appropriate research areas, (ix) what, if any, consideration has been given to the fact that many scientists are highly trained in very specialized fields, and that an appropriate replacement position may not be possible; (b) specify all national and international environmental commitments to which Canada is subject, including, but not limited to the Global Climate Observing System, the World Meteorological Organization/United Nations Environment Programme Scientific Assessments of Ozone Depletion, which are mandated by the Montreal Protocol to occur at least every four years, and hosting the World Ozone and UV Data Centre, (i) wha ...

‘In case an M-factor has been harmonised for substances classified as hazardous to the aquatic environment in the categories Aquatic Acute 1 or Aquatic Chronic 1, this M-factor is given in Table 3.1 in the same column as the specific concentration limits.

In absence of adequate chronic toxicity data, the subsequent step is to combine two types of information, i.e. acute aquatic toxicity data and environmental fate data (degradability and bioaccumulation data) (see figure 4.1.1).

the additivity formula (see section 4.1.3.5.2) provided that toxicity data are available for all highly toxic components in the mixture and there is convincing evidence that all other components, including those for which specific acute and/or chronic toxicity data are not available, are of low or no toxicity and do not significantly contribute to the environmental hazard of the mixture.

Dilution: if a mixture is formed by diluting another tested mixture or a substance classified for its aquatic environmental hazard with a diluent which has an equivalent or lower aquatic hazard classification than the least toxic original component and which is not expected to affect the aquatic hazards of other components, then the resulting mixture may be classified as equivalent to the original tested mixture or substance.