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by kurthr
408 days ago
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The industry started with carbontet (CTC), they replaced it in the 70s with the perchlor stuff you're describing (PCE) in the 80s, then with Trichlorethylene (TCE) in the early 90s, which in turn was replaced with (TCA) Trichlorethane and now all the chlorinated stuff is gone (along with the PCB industry). There's still isopropyl and GBL butyrolactone (which is regulated as a precursor to GHB) for degreasing. Back in the 60s carbontet was used everywhere (dry cleaning and industrial) and there are superfund sites in Happy Tx and Alabama. Everyone has seen the walk through dry cleaning right?
https://youtu.be/WbkfkcSiYcI
We're literally 60 years since the first regulation. And your local dry cleaner was leaking chlorinated solvents into the 80s. Now the cleanup for old gas stations is mostly complete, but the new MTBE stuff is nasty! |
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