I’d say its only the first one.
The other 3 are all general anti-doing-stuff arguments, and dredging, on net, is better on all those metrics than the alternative of not-dredging and continuing the status quo.
That said, I personally have no idea what the balance of direct environmental damage is between different amounts and methods of dredging.
I’d say its only the first one. The other 3 are all general anti-doing-stuff arguments, and dredging, on net, is better on all those metrics than the alternative of not-dredging and continuing the status quo. That said, I personally have no idea what the balance of direct environmental damage is between different amounts and methods of dredging.