So the trigger level means that you need to eat 30kg/y of that animal to get the equivalent to "natural" exposure. That's not an unsignificant quantity of meat, which suggests that the threshhold is pretty low, which is fine, but does makes it kind of irresponsible to talk about the "long lasting effects" of Chernobyl when only the "odd animal" ever gets to be above such a lowish level in terms of practical consequences.

In the long run, we're all dead. John Maynard Keynes