Mr Happy Juice
1. Tiny quantities of plutonium are not toxic in any normal sense.
Well you breathe some in then. Second thoughts, you and Ann Coulter breathe some
2. The Japanese are going to entomb it; that's why they are buying a Putzmeister SRS concrete pump from Ashmore concrete in Georgia. As for a permanent exclusion zone, I'm sure you're right about that, I hope the Japanese government listens to you - see also 4.
3. Agreed, but there is the probability of unpredictable criticality from the corium dumped in the drywell - and releases will only be direct into the water table if, as is likely, one or more drywells are cracked.
4. Of course radioactive dust is not a problem - tell that to the 5100 smallholders in Wales who are still not allowed to sell their sheep because of Chernobyl. And tell those namby-pamby Japanese to man up and collect the dead from the tsumami in the 20 km radiological exclusion zone. While you're at it tell the Americans to allow their troops closer than 90 km from Fukushima, do they want to live forever?
You might like to tell the Chinese that the contamination on those ships they turned away is good for them
5. The tsumami is a catastrophe and the only thing keeping keeping it from being worse are the people dealing with a partial meltown and at least 1 containment that is releasing contaminated water into the ground.