City Council Agenda
Memo to:
Manteca City Council
From:
Michael Selling, Assistant Director of Engineering/City Engineer
Prepared by:
Elba Mijango, Associate Engineer;
Somporn Boonsalat, Deputy Director of Engineering
Date:
May 12, 2026
Subject:
WQCF Capacity Projects (CIP 23002, 23003, 23004 & 23005)
Recommendation:
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Adopt a resolution approving Amendment No. 1 to the Agreement for Professional Services with Carollo Engineers, Incorporated (C2024-163) in the amount of $343,163 for a total not-to-exceed amount of $1,334,233; approving Amendment No. 4 to the Agreement for Professional Services with Pacific Advanced Engineering, Incorporated (C2022-156) in the amount of $150,000 for a total not-to-exceed amount of $1,240,200; approving a $2,363,050 increase to the Project Contingency to cover unforeseen issues encountered during construction for a total not-to-exceed amount of $3,613,050; 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:
In March 2022, Stantec and Herwit Engineering completed a capacity assessment study ("Study") for the Water Quality Control Facility ("WQCF"). The Study identified 10 interim improvements needed to optimize the WQCF treatment process.
On October 13, 2022, the City of Manteca ("City") entered into a Professional Services Agreement C2022-156 (Attachment 6) with Pacific Advanced Civil Engineers, Inc. ("PACE") to provide design services for 4 of the 10 projects: Replace Internal Mixed Liquor Recycle Pumps ("CIP 23002"), Fix Flow Split to North Plant Aeration Basin ("CIP 23003"), Add New Independent Mixing System to Zone B ("CIP 23004"), and Add Process Aeration Control to Improve Monitoring and Control of Denitrification ("CIP 23005") (collectively the "Project")
On June 20, 2023, the City approved Amendment 1 to PACE's Professional Service Agreement for additional tasks associated with the re-design ...
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