what they did was after the earthquake, they took these mounds of sand, the valencia st. hill, if you go up market street, you know how it starts to climb? imagine that was a much larger hill. they mined 26 million cubic yards of sand out of theire, and they mixed it with the debris from the fire and they used it to fill basements. so you have sand, ash, pieces of wood, brick. well, the ash is a hazardous material. you come along and used to buy a site at sixth and mission, with the understanding you will demolish the building and build a 50 story building. and you thought you were just going to dig out the sand, the film, and haul it to another site. now you come to find out the material you were going to move at $8 per ton is now going to cost anywhere from $40 to $78 per ton. the has a significant impact -- and has a significant impact on the cost of your project. if you are out on the sunset and vine a single-family home, just have the geotechnical engineer come out and say it is on earth quicksand, the building will probably settle three-quarters of an inch. have the