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The DC-02 & DC-03 diversion structure (also known as the Pendleton diversion structure) was designed to divert flow from the trunk sewer to the Deer Creek Sanitary Tunnel during storm events.

The Deer Creek Sanitary Tunnel is designed to store peak flows from the existing collection system that exceed the capacity of the existing trunk sewers or the capacity of the downstream treatment plant.

The Lower and Middle River Des Peres (LMRDP) CSO Storage Tunnel Dewatering Pump Station (DPS) will receive all the flow entering the LMRDP CSO Storage Tunnel. The DPS peak design flow is 100 MGD and will pump either to the Lemay Wastewater Treatment Plant (WWTP) or the Enhanced High Rate Clarification (EHRC) facility. The DPS will operate only during or after a weather event that requires the use of the storage tunnel. The bar screen will be located upstream of the DPS to prevent large debris from damaging the pumps.

IDCS was selected to participate as a sub-consultant to Greeley & Hansen for the project to add ultraviolet disinfection facilities to the Terrence J. O’Brien (North Side) Water Reclamation Plant.

Proposed Lemay Pump Station No. 3 is a wet-pit/dry-pit station with a firm capacity of 15MGD.  Lemay No. 3 Pump Station will accept the flows from the Jefferson Barracks Tunnel and pump to the Lemay WWTF.  The new Lemay No. 3 PS will replace the existing pump station.  The Lemay No. 3 PS will be the network connection point of all the Intake structures and level sensors in the Jefferson Barracks Tunnel system, therefore control and monitoring of the Tunnel will be consolidated at the Lemay No. 3 PS. 

MWRDGC initiated a project for the replacement of a portion of the 1920’s Westside Treatment Plant at the Stickney WRP with new Aerated Grit Facilities and Primary Settling Tanks.

The Central Park Pumping Station Electrification project is to convert a steam-powered pumping station to electrically driven pumps, and rehabilitate and upgrade the electrical services to the pump station.

MWRDGC initiated a project for the replacement of a portion of the 1920’s Westside Treatment Plant at the Stickney WRP with new Aerated Grit Facilities and Primary Settling Tanks.