Without a doubt, the absence in Canada of programs like systematic biomonitoring, which many other jurisdictions have, limits our ability to speak to meaningful outcomes.
I will fully admit that I spoke to process, the number of assessments we did, etc., and it is because of the lack of that kind of program that I am not able to systematically say we took lead out of gas, and we know what's happening with lead in the environment, but do we know what lead levels are in people across this country? It's not a requirement of CEPA, and therefore it is something that we do sporadically, in a number of spot studies on a priority basis for the most critical of issues. We are not in a position to have a systematic program that would really inform us of whether the levels are coming down such that we could be satisfied that we've done enough, would know that we need to do more, or that they could inform our priorities in the actions we've taken to date. These are, in short, reasonable measures.