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:
April 15, 2025
Subject:
Amendment No. 1 with Carollo Engineers, Inc. (C2024-120) in the amount of $579,422 for the WQCF Ammonia Sidestream Treatment Capital Improvement Program Project (CIP No. 25004) and UV System Rehabilitation Capital Improvement Program Project (CIP No. 25005)
Recommendation:
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Adopt a resolution approving Amendment No. 1 to the Agreement for Professional Services with Carollo Engineers, Inc. for the WQCF Ammonia Sidestream Treatment (CIP No. 25005) and Ultra-Violet Disinfection System Rehabilitation (CIP No. 25004) Project for an amount not-to-exceed $579,422 and authorizing the City Manager or designee to execute the Amendment and take all appropriate actions necessary to carry out the purpose and intent of the resolution.
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Background:
In March 2022, the City of Manteca (City) completed a capacity assessment study (Study) for the Wastewater Quality Control Facility (WQCF). The Study identified 10 interim improvements needed to improve the WQCF treatment process among them was the Ammonia Sidestream Treatment Project:
1. Glycerin Injection System (completed and in-service)
2. Replace Waste Activated Sludge (WAS) Pumps (in construction)
3. Replace Return Activated Sludge (RAS) Pumps (in construction)
4. Replace Internal Mixed Liquor Recycle Pumps (in construction)
5. Fix Flow Split to North Plant Aeration Basin (in construction)
6. Add New Independent Mixing System to Zone B (in construction)
7. Add Process Aeration Control to Improve Monitoring and Control of Denitrification (in construction)
8. Ammonia Sidestream Treatment (included in this project)
9. Centrifuge No.3 or Equivalent (bids received March 2025)
10. Add DAF No.3 or Equivalent (bids received March 2025)
In March 2024, the City adopted t...
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