Thank you for the advice Frank, I'll follow your rule in the future as well. 

Since the whole area is currently behind fencing and work is being done on the site, I don't think any of the BAG import need to be removed. Even the northern area above Hoenwaard is being used to store materials, even if work has not started on grading the lots. I've enclosed everything in a Construction zone Area, and can check the site every month or so and update it as the work progresses.