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I think there is a bit to unpack in your question, starting with the definition of terms. Just starting off with the title question, yes - examples include the 1948 Donora Smog event, and the 2006 Delhi Smog event. The use of the word disaster is usually reserved for catastrophes, not exceedances. There are a couple of problems with just claiming that ...


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The assumption is that these contaminants will leach into the ground and reach a source of drinking water. Or they will enter the food chain, by accumulating in plants, eaten by herbivores, eaten by carnivores and/or humans. So the risk is ingestion of material X, with material X being able to affect humans health if its concentration is larger than Y. There ...


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