This major public works project involved the
construction of two batteries of stacked wastewater clarifiers
for secondary wastewater treatment for the metropolitan
Boston area.
The
geographical arrangement was two batteries, A&B,
side by side of eighteen stacked clarifiers connected
by an 810 ft long main pipe and process systems
gallery running north to south. At the south end
across the two batteries running east to west,
was the 520 ft. long secondary cross gallery.
The
entire structure footprint covered ten acres and
had a capacity of nearly 30,000,000 gallons. Two
electrical buildings were constructed for power
distribution and control along with two scum control/process
buildings.
At
the project's peak construction period, two shifts
were employed. All personnel were transported to
the site either by bus or by boat. All materials
were ferried from the MWRA's Fore River Staging
Area and an onsite concrete batch plant was set
up on the island.
