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Environment committee Thank you, Mr. Chairman. My name is Dan Krewski. I'm the scientific director of the McLaughlin Centre for Population Health Risk Assessment at the University of Ottawa, which is also a World Health Organization collaborating centre in population health risk assessment. I want t
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee May I have 42 seconds, Mr. Chairman, just to read our four bottom-line recommendations?
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee We have a large report with a lot of detail, but the four most important points, which we're suggesting action be taken on, are as follows. Number one is an amendment to the preamble to CEPA that includes provision for consideration of children's environmental health. We've sug
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee Could we just get clarification on the PCPA? Are you referring to the additional tenfold margin of safety that's recommended unless there's evidence to the contrary, or to a more general statement?
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee Let me make two quick points in response to the question. First, you heard our recommendation to specifically identify children in the preamble to CEPA. I think Dr. Keefe made some very reasonable arguments that all sensitive subpopulations are really intended to be taken care o
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee Yes and no. We conducted studies on children's health but we did not collect any new bio-monitoring data. We examined exposure levels to pesticides and other toxic chemicals. But I would like to mention, if you're interested particularly in bio-monitoring, the best place to go i
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee It was a point of general information, Mr. Chairman, which I think relates to Monsieur Lussier's question and to several other questions. There are two documents—one is published and the other will appear shortly—that might be of great relevance to the committee's deliberations.
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee I have three quick points, Mr. Chairman. They all relate to the issue of indoor air quality, which has been brought up by several people who have spoken. First, it's clear that indoor air pollution is at least as big a problem as outdoor air pollution. The levels can be higher,
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee We can focus on the products, and as Mr. Glover mentioned, we can also establish guidelines. I'm pleased to observe to the committee that Health Canada has reduced the guideline for concentrations of radon in indoor air from 800 becquerels per cubic metre down to 200 becquerels
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Environment committee I had two points, if I could be brief. On the climate change question, Mr. Glover mentioned the link between climate change and air pollution, but I'd like to re-emphasize that. What you do to control the emission of greenhouse gases is probably going to result in a concomitant r
November 6th, 2006Committee meeting
Prof. Daniel Krewski
Industry committee I would like to begin by thanking the Committee for giving me the opportunity to make a few comments with regard to frequencies. Our program at the University of Ottawa focuses on potential health risk issues associated with radio frequency fields, including those from wireless
February 27th, 2007Committee meeting
Prof. Daniel Krewski
Industry committee We've been looking at radio frequency field exposure from multiple sources. The main source of exposure in communications is probably the mobile phone handset, because you hold it close to your head and the field strength is strongest right at the tip of the antenna. If you look
February 27th, 2007Committee meeting
Prof. Daniel Krewski
Industry committee We've been focusing our work primarily on wireless telecommunications. If I understood the previous discussion, you're looking more at fibre optics and other forms of transmission.
February 27th, 2007Committee meeting
Prof. Daniel Krewski
Industry committee When you're looking at land lines, I think the potential exposure to radio frequency fields is not an issue. As I said previously, the things people talk about when we look at wireless are hand-held mobile phones, where the device is held close to the body. As I commented earlier
February 27th, 2007Committee meeting
Prof. Daniel Krewski
Industry committee I think that is indeed a legend. It's not an issue we've been asked to communicate on, but there's no scientific basis—
February 27th, 2007Committee meeting
Prof. Daniel Krewski