REPORT TO COUNCIL
SUBJECT
Title
Action on the Award of a Construction Contract with Paso Robles Tank, Inc. to Provide Construction Services for the Serra Tanks Rehabilitation Project and Related Budget Amendments
Report
BACKGROUND
The City of Santa Clara Water & Sewer Utilities Department (City) owns three (3) welded steel potable water storage tanks at the Serra Tank site. The Serra Tank site is located at 200 Lawrence Expressway, adjacent to the Agilent Technologies site and provides water storage for daily operations and emergency supply needs.
The three Serra Tanks were built in 1964, 1967 and 1981, respectively, and have a total storage capacity of 13.2 million gallons. American Water Works Association (AWWA) and industry standard guidelines specify that the coating system in steel tanks typically reaches the end of its useful life at 30 years or less. Based on the age of the coating system and condition of the tanks, staff recommends a comprehensive rehabilitation of the tanks to prolong the asset life.
On October 9, 2018, City Council approved an agreement with NV5, Inc. to provide design and professional services for the Serra Tanks Rehabilitation Project. The proposed project scope consists of rehabilitating three welded steel potable water storage tanks to comply with Occupational Safety and Health Administration (OSHA), American Water Works Association (AWWA), and the California Building Code seismic regulations. Work specific to each tank includes, but is not limited to, the removal and replacement of the existing interior and exterior coating, new cathodic protection system, replacement of existing structural rafters and supports, steel banding around the tank circumference, ventilation systems improvement, overflow drainage systems modification, and updates to the instrumentation, electrical and control systems. The site improvement consists of new piping, site grading, drainage, and access around the tank perimeter. A new tank mixing system...
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