Doc:
You can scan to a new database in pdf format in alphabetical order, not necessarily into AC, though you could do that.
Re: the original copy: you may need to check with your State, as to how long you need to keep them- likely for 7 yrs.
Now you could shredd after that, that will take a lot of your staffs time. It really does. Or you could give it outside company to shredd, that will cost a lot of money too.
Consider in winter, if you are in nothern states- an outside wood burner- people use to heat the house. It will heat the house and you got rid of your chart securely.
I get -100 points for not being 100% green here. But you save your staffs time- that gives me about 50 points, it heated the house and that gave me 49 points. You could choose to pay for whoever does this - nominally, they will be happy- that gives me about 25 points. Net is +24 points.
Good luck.