Water & Wastewater

Our Commercial Construction Water & Wastewater Experience

Calumet Primary Settling Tanks

Chicago, IL

This project represented Phase Two of a major facility upgrade at the Calumet Water Reclamation Plant and was part of a $500 million construction program. Phase One, also undertaken by our team, included preliminary sewage screening and pumping facilities. Phase Two involved construction of a new grit building with eight aerated grit chambers, grit removal and dewatering systems, and associated mechanical and electrical facilities, equipment, service tunnels, and connections. The project also included 12, 155-feet diameter, cast-in-place reinforced concrete, circular primary settling tanks, along with several interconnecting service tunnels, four new tunnel access pump stations, two 96-inch force mains extending to the grit building from the Phase One pump building, and an East Gate House and associated roadways for use by the District Police.

Client: Metropolitan Water Reclamation District of Greater Chicago
Value: $231,300,000
Size: 80,000 sf
Delivery Method: Design/Bid/Build

Thornton Quarry

Thornton, IL

As part of the Deep Tunnel project – designed to prevent flooding at Thornton Quarry – we constructed a 208’ wide by 116’ tall roller compacted concrete (RCC) Gap Dam. Construction included reinforced concrete quarry plugs within the level two and level three haul tunnels that extend through the Rock Dam at elevation -180 ft and -297 ft CCD respectively. This involved the excavation of 130,000 CY of embankment, enabling us to construct an onsite berm along with work platforms for contract deep drilling operations. A 9,425-foot-long double-row grout curtain was also constructed and extended around the entire perimeter of the Thornton Composite Reservoir to depths up to 550 ft below ground surface.

Client: Metropolitan Water Reclamation District of Greater Chicago
Value: $67,800,000
Delivery Method: Design/Bid/Build

Stop Logs & Diversion Pumps at Wilmette Pump Station & Evanston Pump Station Rehab

Wilmette, IL

This project was completed in three phases. The first phase isolated the existing pump station using steel sheeting to construct cofferdams to hold back Lake Michigan on one side and the North Channel on the other. Once the pump station was dewatered, we removed old equipment and concrete, poured new concrete, and installed new pumps, gates, bar racks, and stop logs. The tunnels that run underneath the pump station were also repaired and relined. During Phase Two, we installed cofferdams around the Diversion Channel, dewatered the site, replaced old concrete, and removed the existing roller gate structure. Three new roller gates were installed along with bar racks and stop logs. For Phase Three of the project, we installed a permanent steel sheet pile wall and removed and replaced an existing concrete retaining wall.

Client: Metropolitan Water Reclamation District of Greater Chicago
Value: $17,400,000
Delivery Method: Design/Bid/Build