Project Name: SG3 Contract B Small Diameter Rehabilitation

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 (SSOs) and capacity limitations. The project proposes to rehabilitate the sanitary sewers in Sewer Group Three (SG3), which have been identified under the Sewer System Evaluation Survey (SSES) and as required by the First Amended Consent Decree. To accomplish this objective, the City is proposing system improvements for small diameter sewers situated in both the Proctor Creek and Sandy Creek Sewer Basins. Rehabilitation will extend the life of sewer assets.

Structural upgrades to the system are necessary to replace old and deteriorated sewers in order to promote 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 this project includes:

• Pre-cleaning sewers
• Lining more than 25,000 feet of sewers using Cured-in-Place pipe (CIPP)liner
• Replacing more than 5,000 feet of sewer through pipe bursting
• Replacing more than 4,000 feet of sewers through open-cut
• Addressing defects in approximately 30 sewer pipe sections by point repair
• 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

Project Type: Consent Decree
Project Start: 04/21/2016
Construction Start: 06/2018
Scheduled Completion: 08/10/2020
Project Budget: $19,460,000
Council District(s): 3, 4,8, 9, 10
NPU(s): Citywide
Project Status / Phase: Complete / Construction