Quiche
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These measurements confuse the daylights out of me, especially after reading the comments after the article. Nevertheless, for your reading pleasure, I give you:
http://enenews.com/700-pcikg-found-soil-base-sierra-nevada-mountains-according-preliminary-data
Fukushima Daiichi Nuclear Accident Monitoring, Taylor Wilson at University of Nevada, Reno, April 17, 2011:
To test different types of Soil, a sample was collected from the base of the Sierra Nevadas. This soil is less sandy, and more organic, which would suggest a higher coefficient for sorption for Radionuclides. It also has more moisture content. The data is still preliminary however, there appears to be ~700 pCi/kg or ~26 Bq/kg of Cs137. Which is ~30 times the amount present in Valley soil.
This is very unsettling for me-- as I live at the base of the Sierras, on the western side. Reno, of course, is eastern-- he was not clear which "valley" he collected the sample from. If it's the eastern side, then I'd say the western side is even more polluted, as the rain falls on the western slopes.
Plus I'll add-- we still have the majority of the Sierra snow pack yet to run off...which feeds orchards and crops that are sold all over the country.