JANUARY 2012 - Crew members begin laying out the rebar-reinforced concrete form for half of the tank floor.

The foundation footprint is clearly visible as the network of rebar reinforcement nears completion.

Using a pump truck, workers pour concrete into the foundation form.

Multiple concrete trucks were needed for the all-day pour.

The finished concrete is covered in plastic to allow for consistent curing.

A second section of rebar is installed.