SG3 Contract D Small Diameter Rehabilitation

complete / construction

The Department is continuing the implementation of the Sewer Rehabilitation Program to upgrade its existing small diameter sewers to reduce the amount of extraneous flows, infiltration and inflow (I/I) entering the system, in addition to eliminating sanitary sewer overflows and capacity limitations. To accomplish this objective, the City proposes system improvements for small diameter sewers situated in the Sugar Creek Sewer Basin and located in approximately 10 sewer heads. This project is necessary to meet the requirements of the Second Amended Consent Decree (SACD), which prescribes evaluation and improvement measures to eliminate sanitary sewer overflows (SSOs) and to protect the City’s investment in upgraded water reclamation facilities. Structural upgrades to the system are necessary to replace old and deteriorated sewers in order ensure the extended service life, reliability, and improve flow conveyance. The current milestone completion date for the work under this project is July 1, 2020. The scope of the project includes: Pre-cleaning of sewers Lining of sewers using Cured-in-Place pipe (CIPP)liner Replacing sewers through pipe bursting Installing new sewer using horizontal directional drilling methods Replacing sewers using open-cut methods Addressing defects in short pipe sections through Internal and external point repairs Rehabilitating manholes Justification: Addresses Consent Decree requirements Enhances flow capacity of small diameter sewers Reduces inflow and infiltration or extraneous flows into the sewer system Increases protection of our receiving waters and reduced threat to public health and safety

High