Well-managed landfills are among the best solutions I know. (After all, the oil that the plastic was made from was originally buried underground, and wasn't harming anyone there.)
> After all, the oil that the plastic was made from was originally buried underground, and wasn't harming anyone there
While I agree with your main point, that isn't really solid reasoning. Oil wells are typically so deep down, that yeah, the oil was too far in the ground to have the potential to harm anyone. But ground water (and ground water pollution is one of the concerns with landfills) are much higher up in the ground, and if you now put a landfill on top of it, it has the potential of seeping into ground water (if badly managed).
While I agree with your main point, that isn't really solid reasoning. Oil wells are typically so deep down, that yeah, the oil was too far in the ground to have the potential to harm anyone. But ground water (and ground water pollution is one of the concerns with landfills) are much higher up in the ground, and if you now put a landfill on top of it, it has the potential of seeping into ground water (if badly managed).