How Do I Clear A Very Long List Of Finder Alert/Notifications?

Left a drive erase running over night and woke up to a list of "Disc Not Ejected Properly" notifications.

All the notifications are for the same drive if that matters and not the one being erased.

The list of notifications extends way down below the screen. I have to scroll for a while until I hit the widgets.

Is there a way to clear all of these at once rather than clicking the X in the top left hand corner of each?

I was sure there would be a contextual menu option somewhere to clear all of these but I cant locate it.

The notifications preference pane does not list "Finder" or "System" in the list of apps. Thought maybe I could just shut it off there and restart and maybe that might clear it.

Clicking on the Time field in the upper right hand corner just makes the list disappear. But clicking it again brings it back. No control click option seems to be available here.

I've tried option and control clicking the X on the upper left hand corner of a single notification and the body of the notification but nothing happens.

See attached pic. The alerts were generating every 1 to 2 minutes and go back from 7:39 am to 7:49 pm the night before.

Any ideas?