KEY PROJECT COMPONENTS:
• Hydraulic Flow Analysis
• Sanitary Sewer and Manhole Replacement
• Sanitary Manhole Rehabilitation
• Design of Contract Plans and Specifications
• Bidding Assistance
• Construction Administration & Observation

This Project included the replacement/rehabilitation of the sanitary sewers in the Fifth Ward of the City of Glens Falls, which encompasses Bush, State, Faxon, East Tremont and Water Streets. The sanitary collection system in this area had been experiencing problems for some time, most notably with sewer overflows near the corner of State and Faxon Streets causing considerable concern among the local residents. The Project Area sewers collect sanitary flow from the aforementioned neighborhood in addition to receiving sanitary flow from the Thornberry Pump Station via forcmain delivery at the corner of Bush and State Streets. The project area gravity sanitary flow is delivered to the Water Street Pump Station adjacent to the Feeder Canal. The sanitary sewers in the project area were in extremely poor condition, and were receiving considerable amounts of inflow and infiltration (I/I), which greatly lessened the capacity of the sanitary sewers in the area. The majority of the pipe segments consisted of varying severity of broken and offset joints, cracks, dips and root intrusion. There were also flow restriction problems from a stuck cleaner hose and instances of decreasing pipe size. Much of the Project Area Sanitary Sewer was also plagued by insufficient slope to maintain a scour velocity of at least 2 feet/second. Many of the sewer manholes were also severely deteriorated and required either relining or replacement.

In addition, groundwater at the Project area was considered to be fairly shallow and combined with very sandy soils made for potentially problematic excavation. The City also reported the presence of shallow bedrock in the western part of the Project Area, as well as a stream crossing. The City had also imposed a Building Moratorium until the sanitary sewer problems in the project area could be remediated. A Sanitary Sewer Study of the Project Area was completed in addition to camera inspection. Once the report was accepted by the City, the final design was completed in regards to constructability, cost effectiveness and an accelerated construction schedule desired by the City so that development could continue in the Fifth Ward. Wales Engineering, now part of TVGA provided the City with preliminary & final design and construction-related-services for the Project.