Hey, do what you can, right ?
I'm not surprised that Japan wishes to splurge on chip tech, it's mainstream these days. I am a bit sceptical about where they'll build a plant, though.
Japan is small, and heavily populated. Any new build is going to have be outside of residential space and what little agricultural space there is. To me, that basically leaves the mountainside.
Now, the interesting thing is that a chip fab in the mountains shouldn't have too much trouble with water supply, so there's that. But it will be a lot more expensive to build than a fab on the flats of Arizona (where there is little water). Of course, there's always the possibility of creating an artificial island, but then there's the pure water issue . . .
In any case, I wish good luck to that fab and I hope that the used water treatment process will ensure that no contaminants get to the water table.