Sanitary Sewer Extension - Deep River, CT

Cardinal Engineering completed the design of a major expansion of the Town’s sanitary sewer system to serve the Town Center plagued by failing septic systems. The project included many difficult conditions including very hilly terrain, shallow bedrock, high groundwater, multiple river crossings, deep excavations of up to 27 feet and had a potentially large impact on inland wetlands.

A feasibility study and life-cycle cost analysis was completed. Three alternatives were evaluated:

1. Construction of gravity sewers with a 2,500 linear foot sewer interceptor along the Deep River.


2. Construction of gravity sewers, a pumping station and force main to limit environmental impact.


3. The installation of a combination of gravity sewers and a low pressure sewer system with individual or clustered grinder pumps to limit the depth of excavations and the quantity of rock excavation required.
   

The project also involved conceptual planning for the possible future extension of sewers into the western portion of the Town which would be sewered by the interceptor sewer or a pump station.

The final design consisted of 16,000 linear foot of sanitary sewers and one pump station.

This project also included the complete reconstruction of all roadways utilizing pavement reclamation and the replacement of concrete sidewalks and curbing.

Cardinal Engineering provided construction contract administration and full-time resident resident engineering services for this project.

 

Back to Wastewater Management Wastewater Collection Projects		Forward to Next Project