• thrawn@lemmy.world
      link
      fedilink
      arrow-up
      1
      ·
      edit-2
      1 year ago

      Varies depending on the site, sometimes it’s gasoline, or solvents, or heavy metals or PFAS. As for how it happens, accidental or deliberate releases. I’ve found military documents from the 50s that say the official place to dispose of used motor oil was a pit they’d dug in the ground.