It’s convenient to think of fixing a problem and it’s done. But that doesn’t apply to the long-neglected legacy polluted sites in the Great Lakes region.
In simple terms we think of a cleanup as removal of something that, left unattended, will become a nuisance or a problem.
Great Lakes Now
https://www.greatlakesnow.org/2020/09/toxic-great-lakes-sites-capping-dredging/