Thanks, Bill.

Hi Kevin. Why would there be a high monazite content in a pillow?

Well put, Kevin.

Brian R Gaulke, CHPemeritus

Would you say that requiring testing and mitigation during real estate transactions would likely bring a huge increase in your business?

I agree with both Shawn and Kevin on this issue. However, take a look at the reasons the 69% of survey participants with elevated radon (>200 Bq/m3) who didn't mitigate chose that route. I would have thought that people who had lived in their current home for some time would include that as a reason for not mitigating ("I haven't gotten sick yet" etc) but it isn't there, although it might be buried amongst the 35% of participants who were not certain that there was a serious enough health risk.

Thanks Shawn. I was aware of the real estate driver in the US but hadn't thought of it in this context. In fact, when I worked for Health Canada, I was actually in favour of using real estate transactions to push radon testing and mitigation. I guess it's fortunate that we didn't go that way.

Regards,
Brian

The Health Canada report that Bruce linked to shows only about a 10% difference between certified and uncertified contractors. The difference between this and Larainne's recollection could reflect a difference between the Canadian mitigation industry and that of the US. What do the professionals out there think?

Thanks, Bill. This is an excellent review of the evidence and recommendations.

Brian Gaulke, CHPemeritus

What is the dark grey object in the lower left of the picture? Is it associated with ventilation?

Was a reading at the sump meaningful in terms of personal exposure? Is the basement finished? Did the woman spend significant time in the basement? Were any readings taken anywhere else in the home? These and likely others are questions which should have been answered before radon was put on the death certificate.

Thanks Bob and Robert. While I had some of the concerns you express, you have also cleared things up for me. I think I'll go to the local library and try offering my help in understanding results to discuss measurement results with users of the service.

How does one get past the ad which covers up the story?

Brian R Gaulke, CHP

Thank you for providing a replacement and for taking up my suggestion!

Cheers,
Brian Gaulke