FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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BUSHARD DIVERSION STRUCTURE REPAIR, PROJECT NO. MP-307
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Receive and file Bid Tabulation and Recommendation for Bushard Diversion Structure Repair, Project No. MP-307; and
B. Reject the bid from Mehta Mechanical Company, Inc. and direct staff to reissue the contract for bids with changes made to prolong the life of the repairs.
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BACKGROUND
The Bushard Diversion Structure is a below-grade concrete structure in the intersection of Bushard Street and Ellis Avenue in the City of Fountain Valley. The structure is used to divert wastewater into Plant No. 1 that would otherwise flow to Plant No. 2 to make more flow available for recycling through the Groundwater Replenishment System.
RELEVANT STANDARDS
* Maintain a proactive asset management program
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* Meet volume and water quality needs for the GWRS
PROBLEM
The corrosive atmosphere within the Bushard Diversion Structure has damaged conduits, wiring, and hydraulic hoses for two large valve actuators. As a result, one of the two valves is inoperable, and the other can only be operated manually. Manual operation involves setting up traffic control, shutting down traffic lanes, opening the sewer, and performing a manned, confined-space entry. Damage to concrete and the PVC liner has also been observed.
When bids were due on January 28, 2020, only a single bid was received, and that bid was 44 percent higher than the Engineer's estimate. The significantly higher cost and single bid prompted staff to reconsider the previous decision to rebuild rather than replace the two large valve actuators. Replacing the actuators would prolong the life of the facility compared to rebuilding...
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