""Miniscule" amounts of radiation from the  Nuclear Reactors have been detected in California. Whatever that means, a "miniscule" amount of radiation can sicken or kill you. One teaspoon of plutonium can poison every person in the world!Most estimates are that the lethal dose of plutonium is 1/2 gram. However, 26 men who worked on the Manhattan Project ended up with a much higher dose of plutonium--and have far exceeded normal lifespans. The actual lethal dose is probably much higher than 1/2 gram. Even using 1/2 gram as the lethal dose, for all six billion people, that would require three billion grams, or three million kilograms, or 30,000 metric tonnes. I am quite sure that there is not 30,000 metric tonnes of plutonium on this planet. It is certainly way more than a teaspoon of plutonium!
Plutonium is not the primary risk from these reactors, but I can say with great confidence that my survey meter gives me no reason to worry. It continues to show a value just barely above zero--which is background radiation level.