Another Decay Curve
Notice the incredibly high buildup of radioactivity from the Aware
Fan-Filter element after running for several hours in a basement.
(RM-80 + Aware Fan-Filter) (Fan-Filter Photos). The difference between background CPM and
specimen's peak CPM is large. This represents perhaps 4 to 5 pico
curies radon per liter air. EPA suggests with 4 to 20 pico curies radon
per liter air one should take action to reduce levels below 4 pico
curies per liter air within a few years. With levels less than 4 pico
curies radon per liter air EPA suggests that although exposure in this
range does represent some risk, reductions at these low levels are
sometimes difficult to achieve. Can you image the kind of graphs you
could generate if you had a more extensive Radon / Nuclear Flea problem!
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