Reservoir R2 Coating Project

Scope

The City of Benicia operates six treated water storage reservoirs, ranging in capacity from 1.0 to 3.0 million gallons (MG). These reservoirs supply water during peak demand periods and provide essential storage for fire and emergency situations.

Reservoir R2, a welded steel tank with a 3.0 MG capacity, was identified in a 2018 inspection as needing significant maintenance. The interior coating required complete removal and replacement, while the exterior coating needed at least a touch-up, and possibly removal and recoating as well.

In August 2022, the City engaged Stantec Consulting Services, Inc. to design the rehabilitation project. By January 2023, the City Council approved an amendment for additional inspections and testing. This included assessing the structural integrity of the steel members supporting the roof, conducting thickness testing of the reservoir floor due to suspected leakage, and addressing other repairs recommended in the 2020 Condition Assessment Report.

During the project, corroded structural steel members were either repaired or replaced, and damages to the tank floor were addressed following the removal of the existing coating. The project also involved full recoating of the tank's interior and exterior, along with upgrades to electrical, mechanical, cathodic protection, and instrumentation systems.

Construction Award Date

October 3, 2023

Tentative Project Schedule

Work began in November, 2023, and was completed in May, 2024.

Construction Cost

$1,591,805

Funding Source

Water Major Capital Projects Fund

Contractor

United Field Services Corporation

Project Contact

Tony Fisher
City of Benicia
Project Manager
tfisher@ci.benicia.ca.us