I have no idea, but my guess is that whoever lives in that area and uses the roads there does not want to see a bunch of dump trucks going back and forth and creating a lot of dust in the area, pot holes. Perhaps their "peace and quiet" would be disturbed. I wouldn't like it. I lived near a concrete plant once, about 1/2 mile away and the dust in the house was horrible even using air filters and keeping the AC on all the time. That's just my guess. Maybe someone who lives over there will chime in.