No, the correct answer is zero. The impact of Fukushima on someone living on the west cost of the US is negligible; as near to zero as makes no difference. There are many, many, many other things you don't worry about which has a much larger impact on your life: most dangerous of which is probably your diet and your commute to work.
How? If you dig down you'll get heat. Wind power is bad for the environment? Solar has safety challenges? What?
> None. Zero. Absolutely no impact or ramifications whatsoever.
Clearly it has some impact, the question is how to measure it. Whatever the answer, zero isn't it.