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<blockquote data-quote="wjschmaltz" data-source="post: 325445" data-attributes="member: 6150"><p>When you sample, the longer time frame of your test will give you the most accurate results. Typically a large commercial or military building will have a 90 day test to cover liability. Real estate transactions typically run a 24-48 hour test. With a longer timeframe, samples are collected under “normal” living conditions. On shorter time frames, the sample should be collected under “closed building conditions.” So no fans, no windows, no heat/ac/, no doors open longer than typical, etc. It doesn’t take much to bias a sample by slightly changing any of them things up. People get all bent out of shape when doing home transactions because they believe the closed building conditions are not representative of every day life and they will disregard a hot reading. It’s just the only way to sample in a short period of time without potentially missing something. And in my experience, even a closed building reading in the short term will be biased low. After completing additional long term sampling, exposure risk typically comes back hotter. After purchase, I’d still recommend everyone do a long term test in your home. Because of all the earthquakes I have at my house, I do a long term test in my crawl space and living space once a year. </p><p></p><p>You gotta be a damn moron to not take it seriously. Fifty years ago there was no such thing as cancer either, a bunch of people just died at 60 of natural causes……</p></blockquote><p></p>
[QUOTE="wjschmaltz, post: 325445, member: 6150"] When you sample, the longer time frame of your test will give you the most accurate results. Typically a large commercial or military building will have a 90 day test to cover liability. Real estate transactions typically run a 24-48 hour test. With a longer timeframe, samples are collected under “normal” living conditions. On shorter time frames, the sample should be collected under “closed building conditions.” So no fans, no windows, no heat/ac/, no doors open longer than typical, etc. It doesn’t take much to bias a sample by slightly changing any of them things up. People get all bent out of shape when doing home transactions because they believe the closed building conditions are not representative of every day life and they will disregard a hot reading. It’s just the only way to sample in a short period of time without potentially missing something. And in my experience, even a closed building reading in the short term will be biased low. After completing additional long term sampling, exposure risk typically comes back hotter. After purchase, I’d still recommend everyone do a long term test in your home. Because of all the earthquakes I have at my house, I do a long term test in my crawl space and living space once a year. You gotta be a damn moron to not take it seriously. Fifty years ago there was no such thing as cancer either, a bunch of people just died at 60 of natural causes…… [/QUOTE]
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