So it just removes the radiation from the soil to leaves then you move leaves to a secure location and you are left with clean soil eventually?
First off, no such thing as clean soil....dirt it is called.
http://www.tesec-int.org/chernobyl/Environmental contamination.htm
Soil contamination. All soil used anywhere in the world for agriculture contains radionuclides to a greater or lesser extent. Typical soils contain approximately
300 kBq/m[SUP]3[/SUP] of [SUP]40[/SUP]K to a depth of 20 cm. This radionuclides and others are then taken up by crops and transferred to food, leading to a concentration in food and feed of between 50 and 150 Bq/kg. The ingestion of radionuclides in food is one of the pathways leading to internal retention and contributes to human exposure from natural and man-made sources. Excessive contamination of agricultural land, such as may occur in a severe accident, can lead to unacceptable levels of radionuclides in food.
The releases during the Chernobyl accident contaminated about 125 000 km[SUP]2[/SUP] of land in Belarus, Ukraine and Russia with
radio-caesium levels greater than 37 kBq/m[SUP]2[/SUP], and about 30 000 km[SUP]2[/SUP] with radiostrontium
greater than 10 kBq/ m[SUP]2[/SUP]. About 52 000 m[SUP]2[/SUP] of this total were in agricultural use; the remainder was forest, water bodies and urban centres. While the migration downwards of caesium in the soil is generally slow, especially in forests and peaty soil, it is extremely variable depending on many factors such as the soil type, pH, rainfall and agricultural tilling.
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So, this says soil is already radio-drity. 300KBq is a lot. But, not too much unless you are prone to dirt napping.
But the addition of somewhat more that 10% ie. 47kBq is enough to make total exclusion of human life necessary.
So, folks please don't act like the oceans and the sea and soil are clean blank slates. It is all radio-active.
We simply and easily push it over the edge into
un-inhabitable, in the case of soil, and to
poisonous in the case of air and water.