Project Designer: City of Montrose Engineering Department
Project Surveyor: City of Montrose Engineering Department
Construction Contractor: Haynes Excavation (Montrose, CO)
The Woodgate Subdivision is situated along the eastern side of Woodgate Road south of Otter Road as shown in the attached map. The neighborhood was originally developed in the mid-70s under County regulations with a sanitary sewer collection system running to a local sewage lagoon. Changes in public health requirements forced this lagoon to be abandoned in the early 90s at which time the neighborhood annexed into the City and a sewer main was extended to the neighborhood. With this annexation, the City inherited operation and maintenance obligations for the sewer collection system.
The sewer system was built primarily with thin-walled plastic irrigation pipe (PIP) and was not built to any established standard. As a result, the system has continually had maintenance issues due to root intrusion, improper pipe support, collapsing pipes, separated joints, and protruding or unsealed service connections. Furthermore, the sewer system was constructed with poor access in areas between or behind multiple private residential lots and the locations of the piping network were never formally mapped.
In response to these issues, this project will perform a general rehabilitation of the sewer system to improve line durability, efficiency, reliability, and accessibility. Work will include spot repairs where failures of the pipe have occurred, insertion of new manholes and cleanout basins, and utilization of trenchless technologies to replace or line existing pipes. This includes pipe bursting and Ultraviolet Cured-In-Place Pipe (CIPP) lining systems. This approach is being utilized in order to limit disturbance to adjacent residences to the extent practicable; areas that do end up being disturbed will be restored by the contractor as part of the project.