E-Waste Disposal

I had a caller that asked me a very interesting question. Is it appropriate for restorers to charge for E-waste disposal of total loss electronics? I know that in some areas there are firms that pick up E-waste at no cost to the company. In other areas that might not be the case. I would assume that as long as you get a receipt from the disposal company that you could pass on the cost. Regardless, we should be environmentally responsible when considering disposal.