Do you have a source?
Fallout seems questionable as this wasn’t an incident like as Chernobyl, which involved a fire burning the coolant and steam line ruptures. The facility was swept over by a tsunami, destroying the infrastructure. If anything, most of the radioactive material would be in the flood detritus.
I don’t have a source for you to read but the radiation continues to pour out of at least two reactors.
Head Researcher: Boulder, Colorado a “hot spot” for Fukushima fallout — None of their other US or Canadian samples came close to Boulder’s contamination, except Portland which was even higher
This might lend some credence to it.