To: Board of Supervisors
From: Warren Lai, Public Works Director/Chief Engineer
Report Title: APPROVE Change Order No. 4 with Dowdle & Sons Mechanical, Inc. for CONTRA COSTA REGIONAL MEDICAL CENTER COOLING TOWER REPLACEMENT at 2500 Alhambra Ave, Martinez
?Recommendation of the County Administrator ? Recommendation of Board Committee
RECOMMENDATIONS:
1. APPROVE Change Order No. 4 in the amount of $325,835.09 with Dowdle & Sons Mechanical, Inc. ("Dowdle") for the CONTRA COSTA REGIONAL MEDICAL CENTER COOLING TOWER REPLACEMENT project.
2. AUTHORIZE the Public Works Director, or designee, to execute the Change Order, which provides for additional time and expenses, and increases the contract price by $325,835.09, for a total amount of $3,633,545.16.
FISCAL IMPACT:
100% Enterprise Fund I
BACKGROUND:
On November 7, 2023, the Board of Supervisors awarded a construction contract for $3,167,000.00 to Dowdle & Sons Mechanical, Inc. to replace the cooling towers at the Contra Costa Regional Medical Center (CCRMC).
The cooling towers provide cooling to the interior spaces of the hospital. The three existing rooftop cooling towers are over 25 years old and have exceeded their expected useful life.
The replacement cooling towers are being installed at ground level due to constructability issues related to installing them on the roof. To provide space for the new cooling towers at ground level, the adjacent hillside required excavation and the installation of a new retaining wall. During excavation, it was determined that the retaining wall required redesign to conform to the existing conditions. The redesign and subsequent review process by the State of California Department of Health Care Access and Information (HCAi) caused a significant delay in construction. As the retaining wall installation was critical path work, the overall project schedule has been delayed until the retaining wall can be completed.
This Change Order No.4 will add 119 calendar days to the...
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