The clearwell is used to reserve approximately 33 million litres of water. The foundation consists of 1,200 precast driven piles and the main structure consists of approximately 8,640 cubic metres of cast-in-place concrete including slabs and footings, concrete walls, and 6.4-metre high columns and a cast-in-place suspended concrete roof. The entire structure was water tested and received a waterproof membrane to the entire exterior.

Due to the high number and close proximity of the piles, access was extremely difficult. Most materials were craned into and out of the footprint. Scheduling and sequencing of the concrete pour was difficult and required constant communication with the various crews to coordinate without interfering with cranes, concrete pumps, and other equipment and activities on the project site.