11-22-2015, 08:55 PM
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#21
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First Line Centre
Join Date: Mar 2007
Location: Calgary
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Quote:
Originally Posted by troutman
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The last source you have there doesn't seem to be supporting no proven risk, rather a high level of uncertainty in the dose-response at low levels (which is quite common). From an admittedly quick read the conclusion seems to be that above 1000 Bq/m3 there is sufficient evidence of a health risk, but there is a lot of debate about whether the linear non-threshold dose response model really holds at lower doses. I deal more with chemical carcinogens than radiological but I see that same debate over and over. At the end of the day when protecting public health when there's uncertainty we tend to err on the conservative side and assume the linear non-threshold dose response model holds until there's clear evidence that it doesn't.
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11-24-2015, 07:41 AM
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#22
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First Line Centre
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Let's talk about RADON
So I ended up putting in a Radon reduction system. I bought this monitor online:
http://www.amazon.ca/Corentium-224-D.../dp/B00H30TLPA
And tested for about a week and was getting results in the high 400's. After having the system installed I'm getting readings in the low 20's. Obviously that's a great reduction. For us, we decided that even if the risks to Radon were not conclusive, there didn't seem to be any downside (other than cost obviously) to removing the radon so out it went.
Last edited by Ace; 11-24-2015 at 09:52 AM.
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11-24-2015, 08:07 AM
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#23
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Franchise Player
Join Date: Dec 2003
Location: Sector 7-G
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Michael: Pfffffttt.
Toby: Come on, Michael. You're interrupting.
Michael: You're kidding me? God! You say radon is silent, but deadly, and then you expect me not to make farting noises with my mouth? What is this?
Toby: Please sit down.
Michael: You know what? We're not gonna die of radon, we're gonna die of boredom.
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11-24-2015, 08:14 AM
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#24
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Franchise Player
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My basement is very porous and I spend the majority of my day in it. Not overly worried but did use a kit to test and I'm clear
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11-24-2015, 08:20 AM
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#25
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Franchise Player
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Quote:
Originally Posted by Ace
So I ended up putting in a Radon reduction system. I bought this monitor online:
http://www.amazon.ca/Corentium-224-D.../dp/B00H30TLPA
And tested for about a week and was getting results in the high 400's. After having the system installed I'm getting readings in the low 20's. Obviously that's a great reduction. For us, we decided that even if the risks to Radon we're not conclusive, there didn't seem to be any downside (other than cost obviously) to removing the radon so out it went.
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What part of the country are you in that you got that high if readings?
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11-24-2015, 09:44 AM
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#26
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First Line Centre
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Calgary
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11-24-2015, 10:20 AM
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#27
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First Line Centre
Join Date: Feb 2007
Location: Toronto
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Quote:
Originally Posted by troutman
http://www.forensic-applications.com/radon/radon.html
Industrial Hygienists, in general, are engaged in protection of humans against the harmful effects of ionizing (and nonionizing radiation). The specialized field of managing ionizing radiation is known as “Health Physics” and the job of the Health Physicist is to manage the beneficial use of ionizing radiation while protecting workers and the public from potential hazards. Although political organizations (such as the US EPA) publish a variety of statements of elevated risk, to date (2010) there are no scientific studies that have ever actually shown that radon gas, as typically seen in houses, increases the risk of cancer. To be clear: There are NO valid studies that have conclusively demonstrated that typical residential exposures to radon increase the risk of cancer at all. In fact, all of the valid studies performed thus far show one of two things: 1) No risk and/or 2) a decreasing risk of cancer. This view is reflected in a position statement issued by the Health Physics Society, the premier Health Physics organization in the US. According to the position statement issued by the Health Physics Society1a, for doses below 100 mSv (10 rem)
“…risks of health effects are either too small to be observed or are non-existent."
http://www.cato.org/publications/com...at-false-alarm
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Sorry the delay, I was lazy to type out what she said in response until now.
Radon is difficult to conclusively link when the concentration leads to harm because it's gradual and cumulative. The greatest risk comes from long term exposure at high levels, which is why Health Canada recommends testing for it in areas where someone spends a lot of time in. If levels are high, then it's recommended to take action to vent out the gas.
Also, there wasn't a date for your CATO article, but it did reference a 1996 Finnish Study. However, Canada reviewed their policy in 2006 in response to much later evidence that supported a link between Radon and lung cancer, a position that aligns with the WHO and other health organizations.
Hope that answers your question
LChoy
__________________
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11-24-2015, 10:53 AM
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#29
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My face is a bum!
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So if I never ever go in my basement, no problems mon?
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11-24-2015, 10:58 AM
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#30
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First Line Centre
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Quote:
Originally Posted by Bill Bumface
So if I never ever go in my basement, no problems mon?
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I actually took my reading (high 400's) from the upper floor. The Radon guys say they expect about a 15% increase as you go down the house. So if you are 100 on the upper floor you'd be roughly 115 on the main and 132 in the basement. I also read that the lowest floor isn't necessarily the highest point of concentration.
Last edited by Ace; 11-24-2015 at 11:12 AM.
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11-24-2015, 12:45 PM
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#31
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Franchise Player
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Quote:
Originally Posted by Ace
Calgary
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Which part of Calgary? Hopefully far away from my home.
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11-24-2015, 03:18 PM
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#32
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First Line Centre
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Quote:
Originally Posted by calgarygeologist
Which part of Calgary? Hopefully far away from my home.
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The Symon's Valley area...however Radon could be high anywhere in the city and next door houses can have completely different readings. There really are a lot of variances, which is why Health Canada says all homes should be tested.
BTW anybody thinking of testing I really recommend the Correntium Meter. You can do the cheap send it tests, but not only is that painfully slow, you also can't test for variances. With the meter you can check over and over again, and lend to friends, and test for different seasons, weather patterns, test after you've sealed cracks in your house, etc. Really quite useful. Split it amongst a couple friends and it's way better than the send in tests.
Last edited by Ace; 11-24-2015 at 03:22 PM.
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11-25-2015, 08:09 AM
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#33
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Our Jessica Fletcher
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Radon level will increase significantly if your foundation has cracks.
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11-27-2015, 08:58 PM
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#34
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First Line Centre
Join Date: Aug 2009
Location: Calgary
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Quote:
Originally Posted by The Fonz
Radon level will increase significantly if your foundation has cracks.
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If true and health canada acknowleges the connection between radon and lung cancer then why isn't there more of a program for public awareness to seal basement cracks as part of a program of some sort? Wouldn't it save costs to healthcare and more importantly lives?
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11-27-2015, 09:40 PM
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#35
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First Line Centre
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If you have high levels of Radon you are very unlikely to solve the issue with sealing...however I understand that sealing is important to get the best results from a sub-slab depressurizing system. Radon is so small it can actually come through concrete.
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03-29-2016, 06:15 PM
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#36
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Franchise Player
Join Date: Feb 2007
Location: A small painted room
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Bump, is there a service in Calgary anyone can recommend? Or did you all use the Rona test kits or whatever?
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03-29-2016, 06:43 PM
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#37
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Franchise Player
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I'm not sure you need to use a "service". The mail order ones work fine. Or you can get the monitor from the Amazon link above but it costs quite a bit more.
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03-29-2016, 07:17 PM
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#38
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#1 Goaltender
Join Date: Oct 2009
Location: North of the River, South of the Bluff
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I bought the amazon one. Ran it for a month and got an average reading of 40. I am in Sunnyside. Lent to a neighbor and waiting to hear what he gets.
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03-29-2016, 08:01 PM
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#39
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First Line Centre
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I bought one from Home Depot. It was around $20 and worked fine. Got a reading of around 100 which seems common
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03-29-2016, 08:23 PM
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#40
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First Line Centre
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I bought the Corentium monitor, and I'm hovering around 200 in my basement after 2 months. I live very close to downtown Calgary.
I've noticed that it creeps to the 250-300 range if I don't do anything, but turning on the fan (basement washroom) most nights keeps it in the 150-200 range.
LChoy, could you ask your wife if periodically turning on the washroom fan is sufficient? I'm thinking about hooking it up to a clock so it turns on every night from 2:00 am - 5:00 am.
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