Well today was interesting with the new Fukushima fires. We obviously are getting fallout. Since other news shows these as having started on our 7th of May, Japan's 8th of May. So for a minimum of 36 hours before new fallout hits tht U.S. coast, then the middle of the 8th of May our time is about 36 hours. A present for Mothers's Day; how sweet thank you General Electric and Fukushima Japan.
Golly, Gee, what do you know, we have elevated levels that have not been seen since the 3rd week of March, when the last of the reactors exploded and created a large plume of radio nuclides for our glow in the dark viewing pleasure. (not)
During today's rain we have had a low of 60 CPM to a high of 90 CPM for a mean average of 75 CPM, or 300% of pre-Fukushima background radiation for open air.
It has also come to my attention from Helen Caldecott that for our local radiation we need to include the air radiation, a form of skyshine, and the soil radiation also called soilshine. That being the case, then, our soil (soilshine) is 85 CPM mean average and our air is 75 CPM (skyshine); hence our radiation total is the sum of the two or 160 CPM. This represents all absorbed radioactivity to the body from the air and the soil; not just the air counts as have been going on all over the country, as well as my information. So from here on out add 85 CPM for the soil to my open air readings.
By the way our pre-Fukushima soil background radiation was 40 CPM; and our air background radiation was 25 CPM; for a total of 65 CPM.
160 CPM = 0.1333 mRem per hour = 3.2 mRem per day = 1168 mRem per year = 1.168 Rem per year = 11.68 mSv per year or twice the yearly allowable level until the PTB decided to raise the acceptable limits.
So by this method we are 246% above pre-Fukushima background radiation.