It absolutely does create a new list of substances or a new class of substances. It gives the minister authority over a number of substances that have not been identified, have not been categorized as a result of the section 73 categorization, will not be subject to a section 74 screening assessment, and are not on the list of toxic substances, schedule 1 of CEPA. This does identify a number of new substances, and I can explain how.
The International Agency for Research on Cancer has a number of lists. Taken in totality, there are about 414 substances on their list. For most of those substances, the pathway by which they work is not through the air, so most of them are not air pollutants. That's one issue in terms of the relevance to air pollution.
There is a second way in which they create a new list. I need to give you a bit of context on how the categorization process worked.
The categorization process looked at the 23,000 or so substances that were in commercial use in Canada, including most of the substances on the IARC list. In addition, in any event, the Department of Health also looked at the entire IARC list, took the results and identified about 4,000 substances for screening assessments under section 74.
Those substances include a number of IARC substances, and they would be excluded from this as a result of the friendly amendment. But they don't include all IARC substances. The reason for that is that we excluded those IARC substances for which we believe there is no potential for exposure in Canada. Health Canada has done the preliminary exposure analysis, and if there's no potential for exposure, we've determined not to do further assessment on those. We have limited assessment resources, so we're going to focus on those that are used and exposed in Canada. This would require the minister to take some action with respect to that broader list, notwithstanding the fact that we've narrowed it somewhat.