The Poplar Point (Division Z) project is one piece of the ongoing DC CSO (Clean Rivers) Project. Work includes construction of a new sewage pumping station to replace the existing Poplar Point station that was constructed in the early 1900s, as well as construction of a microtunnel diversion sewer, sewer overflow chamber, main outfall sewer diversion chamber, force main discharge connection chamber and a new microtunnel gravity sewer to serve the adjacent community.

Key project elements include:

• Installation of 229 H-Piles to support future pump station
• Installation 194 auger cast piles for support of diversion chambers
• Installation of 800 linear feet of Microtunneling work of 72 inch and 42 inch diameter sewers
• Installation of 1000 vertical linear feet of jet grout columns
• Placement of 9,500 cubic yards of reinforced concrete
• Installation of mechanical, electrical, plumbing, fire protection, and HVAC system for the future pump station
• Installation of a green roof
• Installation of structural steel for skeleton of the pump station
• Perform temporary by-passing of existing sewer for new construction
• Installation of support of excavation system and structural excavation
• Installation of architectural precast panels