Sobrante & Upper San Leandro Water Treatment Plants Ozone System Improvements

This project rehabilitated the Sobrante and Upper San Leandro Water Treatment Plants to improve system reliability as well as the taste and smell of potable water. Work replaced aging infrastructure and increased plant reliability including replacement of the existing air-fed ozone systems with a larger, more reliable and more efficient liquid oxygen-fed systems; and installation of new liquid oxygen tanks, new ozone generators and power supply units, ozone destruct units, new hydrogen peroxide storage and feed systems, new heating and ventilation systems for the ozone building, new control system cables and conduits, and site electrical. Work involved numerous outages and shutdowns that were closely coordinated with plant operations.

Our team provided project management, resident engineering, and construction inspection services for this critical infrastructure project.

Project Highlights

Rehabilitated the Sobrante and Upper San Leandro Water Treatment Plants to improve system reliability as well as the taste and smell of potable water
Involved numerous outages and shutdowns that were closely coordinated with plant operations

As utility trench excavation proceeds, excess spoils new to be off-hauled and properly disposed of. CPM is experienced with ensuring that the associated requirements for soil characterization are done before disposal, as well as working with Contractors to ensure that the spoils disposal does not conflict with equipment circulation for other work.

Installation of underground duct bank conduit with reinforcing steel cage at Sobrante Water Treatment Plant

Excavating for new utilities often reveals the presence of unknown – and conflicting – existing utilities. CPM has experience on how to recognize and respond to these kinds of unexpected conflicts in a way to minimize their impact on the project’s cost and schedule.

Trenching for new utilities in an existing facility involves using specialized equipment in tight constraints. This is becoming an increasingly common challenge as the country works to upgrade its existing infrastructure and CPM is well experienced in dealing effectively with the challenges involved.