City Council Agenda
Memo to:
Manteca City Council
From:
Kevin Jorgensen II, Director of Engineering/City Engineer
Prepared by:
Kyzen Nicolas, Associate Engineer;
Somporn Boonsalat, Deputy Director of Engineering
Date:
December 17, 2024
Subject:
WQCF Sludge Thickener & Dewatering Unit No. 3 System Design Project CIP No. 24006 & 24007
Recommendation:
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Adopt a resolution approving Plans and Specifications for the WQCF Sludge Thickener (DAF) Unit No. 3 (CIP 24007) and WQCF - Dewatering (Centrifuge) Unit No. 3 (CIP 24006) System Design Project; authorizing the City to file Notice of Exemption with the appropriate agencies pursuant to the California Environmental Quality Act (CEQA); authorizing a Call for Bids; and authorizing the City Manager or designee to take all appropriate actions necessary to carry out the purpose and intent of the resolution (Exempt from CEQA pursuant to 14 Cal. Code Regs. ? 15301(b) (Existing Facilities)).
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Background:
On March 18, 2022, the City of Manteca (City) completed the Wastewater Quality Control Facility (WQCF) 2021 Capacity Assessment that recommended the installation of a third Dissolved Air Flotation Tank for the Waste Activated Sludge (WAS) thickening system and a third centrifuge for the dewatering system at the WQCF.
On November 6, 2023, the City entered into an Agreement (C2023-136) for Professional Services with Carollo Engineers, Inc. (Carollo) (Centrifuge) Unit No. 3 for the WQCF Sludge Thickener (DAF) Unit No. 3 (CIP 24007) and WQCF Dewatering Unit No. 3 (CIP 24006) System Design Project (Project) to evaluate, design, and prepare biddable Project Plans, Specifications, and Estimates (PS&E) of these systems.
During the initial Project evaluation, Carollo was required to prepare a Preliminary Design Report (PDR) evaluating the following alternatives:
1. Review addition of a third Dissolved Air Flotation Tank (DAFT).
2. Review technology change to Rotary Drum Thickeners (RDTs).
3. Review replace...
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