When construction began, general contractor Colantonio expected to find some ground water – but they weren’t expecting nearly 3 ft. of it where the concrete slab for the orchestra pit belongs. At first, they pumped the water to a higher portion of the building so they could get to the underpinning that strengthens the foundation. To work on the orchestra pit slab, however, they had to pump the water out of the building completely. This is where the frac tank comes in. Water is pumped out and into a green tank behind the building. There the sediment settles, the water gets filtered, and then deposited into the sewer. The slab has now been waterproofed and poured, but the entire dewatering process will take another month or so.