Two years ago my son and I washed and waxed the RV for a trip. Headed out to I-20 past the local rock quarry. Apparently the quarry decided to wet the road down right before we passed, about 1/2 mile. I stopped at the gas station to check everything one last time and it looked like the quarry threw up on our truck and FW, dirt spray top to bottom front to back. I called the quarry and they sent a truck with a water hose to the gas station and rinsed everything off. Still wasn't clean but it was better than it was. They have not sprayed the road down since.