The all-caps isn't yelling -- it's for emphasis. This IS A BIG DEAL and the people who downplay it ("[F]ederal" something other claiming to be authorities, which is just generic LEO mumbo-jumbo for we-won't-tell-you-who-said-it and our-ass-is-covered) are making the situation worse by ostritching themselves.
> [F]ederal authorities said that the discoveries were not cause for alarm
The discoveries are not cause for alarm. The 10x radiation in the wild, that's a cause for alarm. Nuclear radiation is toxic (not poisonous) meaning it builds up over time. If the wasps have them then it's being spread outside the containment zone. That is REALLY REALLY BAD because the rate of radioactive leak, the material which is radioactive, the half-life, these are all unknowns.
>...and experts noted that the discovery of radioactivity in wildlife near nuclear facilities did not necessarily indicate the likelihood of a major leak
Yes, discovery doesn't "necessarily" indicate anything. However, the presence of radioactive materials does indicate a failure of the containment vessel(s) and whether it's "major" (what's that???) or not, it's a leak of a substanc toxic to humans which --abset a dosimeter or Geiger counter-- we are not able to natively detect.
The "urgency" to declare it "not a major problem" instead of promptly investigating it, finding the breach, correcting that breach, sweeping other areas than 'that one wasp's nest" and doing a cleanup is incompetence and disregard for human safety in action.