that's a good question. I would guess it would have to do with the contractor being able to access the area with his equipment. Then I would bet there is a difference in you are willing to accept as "removal" and the township code at the construction department. Did you mean "fill it in" or dismatle and return the area to like condition before the pool was installed? Either way I would check with the township on what they say is acceptable and then contact a few "excavators" in the area. Most inground pools have a lot of concrete patio areas that you would want removed with the pool.