City Council Agenda
Memo to:
Manteca City Council
From:
Michael Selling, Assistant Director of Engineering/City Engineer
Prepared by:
Kyzen Nicolas, Associate Engineer;
Somporn Boonsalat, Deputy Director of Engineering
Date:
June 16, 2026
Subject:
WQCF Sludge Thickener Project (CIP No. 24007) & Dewatering Unit No. 3 Project (CIP No. 24006) - Approval of Amendment No. 3 to Agreement C2023-136 for Professional Services
Recommendation:
title
Adopt a resolution approving Amendment No. 3 to Agreement C2023-136 for Professional Services with Carollo Engineers, Incorporated for an amount not-to-exceed $400,000 to provide ongoing engineering services during construction for the Wastewater Quality Control Facility Sludge Thickener Project (CIP No. 24007) & Dewatering Unit No. 3 Project (CIP No. 24006) and authorizing the City Manager or designee to take all appropriate actions necessary to carry out the purpose and intent of the resolution.
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Background:
On November 6, 2023, the City of Manteca ("City") entered into Agreement C2023-136 for Professional Services with Carollo Engineers, Incorporated ("Carollo") to evaluate, design, and prepare a Preliminary Design Report (PDR) and biddable project Plans, Specifications, and Estimates (PS&E) for the Wastewater Quality Control Facility ("WQCF") Sludge Thickener Project (CIP No. 24007) and Dewatering Unit No. 3 Project (CIP No. 24006) (collectively "PROJECT").
On August 1, 2024, the City executed Amendment C2023-136-A1 to Agreement C2023-136 for an expanded design and environmental services as recommended in the PDR for the PROJECT.
On April 15, 2025, the City Council awarded the construction contract C2025-66 to C. Overaa & Company ("Overaa") in the amount of $22,865,000 and approved a Project Budget Contingency of $2,000,000 for the PROJECT.
On May 5, 2025, the City executed Amendment No. 2 to Agreement C2023-136 for Professional Services with Carollo to provide engineering services during constructio...
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