 This was a perfect site for us. Most of the ground in D.C. is relatively softer soil, but some of it is rock, and here along Ohio Drive near the Tidal Basin is where those two types of soils meet, with lots of open space for a construction site. That's why D.C. Water is getting ready to start doing a lot of digging here. And two types of ground means they need two shafts that'll take two giant machines down about 100 feet or so underground. Then they'll start to dig. One going north, that's going to be mining.