DATE: October 8, 2024
TO: Mayor and City Council
FROM: Director of Public Works
SUBJECT
Title
Adopt a Resolution Authorizing the City Manager to Execute an Agreement to Pre-Purchase Substation Electrical 12 kV Transformers and Switches for the Water Resource Recovery Facility (WRRF) Improvements - Phase II Project
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RECOMMENDATION
Recommendation
That Council adopts a resolution (Attachment II) authorizing the City Manager to execute a procurement purchase order with Blocka Construction, Inc., (Blocka Construction) in an amount not-to-exceed $990,000 for substation electrical 12 kV transformers and switches for the WRRF Improvements - Phase II Project.
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SUMMARY
The Water Resource Recovery Facility (WRRF, formerly WPCF) treats an average flow of approximately eleven million gallons per day (MGD) and meets current regulatory requirements for discharge of treated effluent to the deep waters of the San Francisco Bay. The WRRF Improvements - Phase II Project (Phase II Project) design phase is underway that will include improvements to the WRRF that will enable it to meet recently promulgated regulations requiring the plant to reduce nutrients in the effluent by 53% by 2034.
The improvements will include a new administration and laboratory building, relocated primary effluent equalization tanks, a new biological nutrient removal (BNR) process, a new grit removal facility, modifications to the existing solids contact tank, demolition of the functionally obsolete existing west trickling filter, and construction of related ancillary facilities including pump stations, new aeration blower facilities, new process piping, and electrical infrastructure to support the new facilities. As part of the improvements, two new medium voltage (12 kV) transformers and switches are required to power the new facilities. Supply chain issues have resulted in very long lead for critical infrastructure and have caused long delays in some recent City projects. Therefore, it is necessary to start the procurement process early ahead of the start of construction for the Phase II Project.
ATTACHMENTS
Attachment I Staff Report
Attachment II Resolution