HOW EFFECTIVE IS DECONTAMINATION ANYWAY?
Does the Japanese government have a clear plan for decontaminating Fukushima Prefecture? Are the aims they’ve stated really feasible? Is anyone really able to keep track of the changing standards and guidelines? Lately the ministries tasked with managing this work, as well as spokespersons from various corners, seem to be falling all over themselves acknowledging on the one hand that the work is falling short but insisting on the other that it’s been successful. How reliable is government information about decontamination, and is it possible to weed through the contradictions to find some real data on which to base decisions?
We’d like to argue that yes, it’s possible to find informative data. But as has been the case with so many aspects of the post-Fukushima infosphere, it’s necessary to know exactly where to look, and it helps to have your own data handy for comparison.
Safecast wanted to survey a few sites that had been decontaminated and compare our readings with official before-and-after readings taken by the government. It ended up being extremely time-consuming to locate appropriate sites and get our hands on detailed government data. In this long blog post, we cover as much ground as possible, literally and figuratively. We describe what we found out, and what we had to do to find it out, and come up with a few conclusions. We provide plenty of maps and links to original sources of information. Since it’s long (did we mention that already?) here’s a brief synopsis and jump links:
Finally, it’s important to point out that these calculations and estimates deal with people’s risk from external contamination exclusively, and not with internal contamination, particularly from food, which warrants its own separate guidelines and monitoring, and which needs to be carefully accounted for when evaluating people’s overall exposure risks.