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CWA to advertise bids to reline pipeline

Next month the San Diego County Water Authority will advertise a bid package to reline SDCWA pipeline between Sage Road and the delivery point where the water authority obtains its Metropolitan Water District of Southern California supply.

The county water authority has an asset management program which uses both an acoustic, fiber-optic monitoring system as well as internal inspections during aqueduct shutdowns to detect and monitor deterioration of their aqueduct facilities. The condition assessment for a portion of Pipeline 5 prioritized that segment for rehabilitation due to the pipeline’s diminishing service life and the potential damage if a pipeline fails. The relining process installs steel liners inside corroded pre-stressed concrete cylinder pipe, which extends the service life of the pipeline.

The project will reline two sections of the 96-inch pipeline: a 10,000-foot segment from the delivery point to Sage Road and a 2,300-foot portion just north of the Twin Oaks Valley Treatment Plant. The construction is expected to take approximately 11 months, and the cost estimate is between $18 million and $24 million. The relining is included in the 2017-2018 and 2018-2019 Capital Improvement Program appropriations.

Although board action is not needed to advertise the project for bid, the water authority board will approve a recommendation for a contract award. Staff expects to bring a recommendation to the board this summer.

Author Bio

Joe Naiman, Writer

Joe Naiman has been writing for the Village News since 2001

 

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