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Comment by Workaccount2 | Hacker News Reader

Because the accident released a ton of nasty chemicals in one spot. However they are pretty volatile and naturally dissipate. If you see recent pictures from the crash site, nobody is wearing PPE and the EPA has deemed the area as safe to be in.

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EPA also said the dust from the towers collapsing on 9/11 was safe.

The actual EPA pronouncement was that the air and water in NY city were safe (not to warrant an evacuation). They still recommended that first responders and people in the vicinity wear respirators.

Didn't realize that distinction - thank you.

Do you know if they recommended it right away or after a few days?

Well, I don't think the EPA was in a position to make any statements right away - they weren't going to stop people from running in and trying to save lives so they could take air samples back to a lab.

The amount of blame that got pinned on them after the fact was probably pretty unfair.

Lived across the water and my family lived in the city during 9/11. Everyone (news, first responders, agency officials) was saying avoid ground zero unless you have respiratory equipment. That didn't stop heros from running in maskless to help people, or stop people from running through the dust to get to safety. But as you moved uptown and to other boroughs, the particle density dropped significantly, even though the wind was sending dust and debris over brooklyn/staten island. It was immediately well known that people were going to get sick from the fallout

If I can remember later, I'll come back and post a NASA satellite image showing the particle density that I saved from that morning

Are you going to list every call the EPA made and whether it was right or wrong? Or just cherry pick?

I just think it would be wise to not blindly trust any agency right now. I would like to see some independently verified levels at the crash site and at the locations where people are reporting issues.

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