To say this wasn't PLANNED is foolish. Please advise with any info
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I think we are 10 days out from the initial incident and a week out from the fire.
This is not my area of expertise, but, I don’t think airborn contaminants are the main concern at this point in time.
I have seen some more recent pictures (not sure of the date on them) and it showed the train cars wrecked and no fire.
I think the major airborn contamination would of been last week.
There was also some information about the half lives of the chemicals. (Time it takes for half the chemical to degrade in different environments). If you were in a zone that got blanketed last week under the chemical clouds; then you would want to lookup those values and see how long until you go about using the land normally.
Yes fire can destroy the chemicals, however I saw a description of the proper way to incinerate the poly stuff and the open pit fire was not the right way to do it. There were specific temperatures that needed to be achieved to ensure all of it was rendered inert. Open pit fires do not achieve those temperatures. The black smoke from the fire demonstrated that combustion was incomplete. So some stuff was destroyed in the fire, some stuff was converted into other toxic compounds in the fire and released as smoke, other parts of it were just evaporated and sent billowing into the air.