REPORT TO COUNCIL
SUBJECT
Title
Consideration of an Agreement with Schaaf & Wheeler Consulting Civil Engineers for the Westside Retention Basin Stormwater Pump Replacement Project
Report
BACKGROUND
The Westside Retention Basin (Basin) and the Westside Stormwater Pump Station (Pump Station), which discharges stormwater into the San Tomas Aquino Creek, were constructed in 1975. The site is located immediately west of the San Tomas Aquino Creek, and south of Old Mountain View-Alviso Road. The Basin is the largest storm water run-off catchment in the City providing storm water storage capacity to minimize potential flooding.
In summer 2017, the Westside Retention Basin Desilting Project (Desilting Project) successfully removed approximately 16,600 cubic yards of sediment and restored its original storm water storage capacity. During the desilting operation, when the retention basin and pump station wet well were dewatered, the City, along with Schaaf and Wheeler Consulting Civil Engineers (S&W), assessed the existing pumps. It was determined that the existing pumps, motors, and associated piping and wiring were nearing the end of their useful life, and replacement was needed to provide reliable pump station operations.
The proposed agreement attached to this report will initiate the preparation of the design and bid documents for the construction of the Westside Retention Basin Stormwater Pump Replacement Project (Pump Replacement Project).
DISCUSSION
S&W is a licensed professional consulting firm and was retained by the City in May 2016 through a sole source process to provide design and construction support services for the Desilting Project. S&W's scope of work for the Desilting Project included site investigation and analysis, permitting, and preparation of construction documents for public works bidding. The scope of work also included condition assessment of the existing stormwater pumps during construction while the basin and pump station wet well we...
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