I wonder if the government is monitoring wildlife which might eat radioactive vegetation there, then be hunted and eaten by humans?
https://en.wikipedia.org/wiki/Hanford_Site?wprov=sfsi1
According to the lengthy and informative Wikipedia article (link above) Hanford is the major source of employment for several nearby communities. The word about what game can safely harvested and eaten has probably long since gotten out to to local hunting and fishing communities.