[ RadSafe ] Fwd: Alleged Significant rise in ionising radiation in atmosphere over Southern California

[Brennan, Mike (DOH)]

By defining "background" as a clean filter (not unreasonable) I can think of several ways of getting the "over 300%" of background.  The easiest would be to count a filter as soon as it came off the sampler.  Another is to choose a sampling period with som moisture in the air, as it makes things stick to the filter.  Sampling during a temperature inversion also works.  Or you can "accidently" misrecord the time, so you have a greater actual volume than your calculations show.
________________________________________
From: radsafe-bounces at health.phys.iit.edu [radsafe-bounces at health.phys.iit.edu] on behalf of Chris Alston [achris1999 at gmail.com]
Sent: Thursday, June 04, 2015 6:38 AM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: [ RadSafe ] Fwd: Alleged Significant rise in ionising radiation in atmosphere over Southern California

Radon daughters?  Weird "stuff" can happen.  When atmospheric conditions
were just so, I have seen, e.g., metallic objects, like cars, read to
dozens of counts per minute alpha, which then vanishes in a few hours.

Cheers
cja

---------- Forwarded message ----------
From: Roger Helbig <rwhelbig at gmail.com>
Date: Thu, Jun 4, 2015 at 5:36 AM
Subject: [ RadSafe ] Alleged Significant rise in ionising radiation in
atmosphere over Southern California
To: RADSAFE <radsafe at health.phys.iit.edu>
See
http://www.enviroreporter.com/2015/06/alpha-radiation-clouds-los-angeles-air/
for the actual report, also look at the About page - these readings
are being taken by Michael Collins and he may not really know what he
is doing, but claim to know everything.
Roger Helbig
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