This might slightly related to neighbouring threads on styrofoam. Dioxin, an unwanted by-product like from incineration process and is previously common to be used as herbicide (i dont know whether it is still used as herbicide), is a carcinogenic chemical. Around few million liters agent orange which contains around 300 kg dioxin was once used in vietnam war, and it was suspected that it caused four million people were either died or became handicap. Question: * supposed it was true (it is still under investigation), how could one remove 300 kg of dangerous chemical from soil? I mean what is the best effective way to do that. To remove such contaminant from water is much easier. But from soil? * is it true that a warm plastic material could expose dioxin? So for example I wrap my warm food or drink with styrofoam, is that makes me at higher risk of exposed to dioxin?