DATE: June 25, 2024
TO: Mayor and City Council
FROM: Director of Public Works
SUBJECT
Title
Adopt a Resolution Authorizing the City Manager to Amend the Professional Services Agreement with Carollo Engineers, Inc., to Increase the Contract Amount by $378,774 for a Not-to-Exceed Amount of $1,764,354 to Provide Additional Construction Support Services for the Water Resource Recovery Facility (WRRF) Switchgear Rehabilitation Project No. 07656, and Appropriating Additional Funds in the Amount of $135,154
End
RECOMMENDATION
Recommendation
That Council adopts the attached resolution (Attachment II):
1. Authorizing the City Manager to amend the professional services agreement (PSA) with Carollo Engineers, Inc., (Carollo) to increase the contract amount by $378,774 for a not-to-exceed amount of $1,764,354 to provide additional construction support services for the Water Resource Recovery Facility (WRRF) Switchgear Rehabilitation Project No. 07656; and
2. Appropriating additional funds in the amount of $135,154 from the Sewer System Replacement Fund (Fund 611).
SUMMARY
The WPCF treats an annual average flow of approximately eleven million gallons per day (MGD) and meets current requirements to discharge treated effluent to the deep waters of the San Francisco Bay. Originally installed in 1982, the existing main switchgear (MSB) is a key component of the power distribution system at the WPCF. The MSB along with several related 480-volt motor control centers (MCCs) and 480-volt distribution panelboards have provided power and controls to vital plant facilities for over forty years and are in need of replacement for continued operational reliability of the WRRF.
On May 18, 2021, Council authorized entering into a PSA with Carollo to provide engineering, design, and construction support services for the Switchgear Rehabilitation Project in an amount not-to-exceed $1,108,835. On June 27, 2023, Council authorized amending the contract amount by $276,746 to include programming, acceptance testing, and commissioning services for the new programmable logic controller (PLC) equipment as part of the construction support services for an amended contract not-to-exceed amount of $1,385,581.
Due to supply chain issues and delays in procurement and delivery of some of the electrical equipment, the construction schedule has lengthened by approximately a year since issuing notice to proceed to the Contractor. In addition, because of the highly specialized nature and complexity of electrical retrofits, additional assistance by the electrical engineer responsible for the design is needed to assist the Contractor and WRRF staff with the complex sequence of shutdowns and cutovers, as well as performing other specialty on-site inspection support services outside the City’s inspection staff area of expertise. Therefore, Staff is requesting an amendment in the amount of $378.774 for additional construction support services for an amended contract not-to-exceed amount of $1,764,354.
ATTACHMENTS
Attachment I Staff Report
Attachment II Resolution