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Pump Stations

O’Hare Sunken Caisson Pump Station

O’Hare Sunken Caisson Pump Station

Location
Chicago, Illinois
Owner
City of Chicago
Architect
AECOM, O’Brien and Associates, Inc., Rubinos & Mesia Engineers, Inc.
Contract Value
$17,000,000

This project featured a 60-foot-diameter sunken caisson pump station, a concrete spillway and an intake structure. The work included rock grouting, rock anchors, pipe jacking, support of excavation pilings, excavation, reinforced concrete, erosion control, storm sewer installation, service roadway construction and landscaping. The finished pump station includes three 4000-GPM high-flow pumps and two 1100-GPM low-flow pumps. The pumps move detention basin water through 24-inch and 20-inch ductile iron process piping. All pumps and valves are managed by a programmable logic controller and variable frequency drives in the structure’s electrical room.

4000
The finished pump station includes three 4000-GPM high-flow pumps and two 1100-GPM low-flow pumps.

Additional Experience

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Hydro & Power

Walsh

WALSH CONSTRUCTION

929 West Adams Street
Chicago, Illinois 60607
T: 312.563.5400
F: 312.563.5466

Walsh

ARCHER WESTERN

2410 Paces Ferry Road
Suite 600
Atlanta, Georgia 30339
T: 404.495.8700
F: 404.495.8701

Walsh

WALSH CANADA

36 York Mills Road
Suite 302
Toronto, Ontario M2P 2E9
T: 416.849.9000
F: 416.849.9100

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