City Council - 12/2/2025 - Agenda Item N3 - Fifth Amend to Agreement A 8294

The City Council of Oxnard discussed the fifth amendment to the professional services agreement with Brown and Caldwell for the primary clarifiers and activated sludge basins improvement projects at the wastewater treatment plant. The amendment extends the engineer of record services due to unforeseen field conditions, multiple pipe failures, and coordination complexities that have prolonged the project timeline. The original design scope included mechanical equipment replacement, odor control, and seismic upgrades, with subsequent amendments addressing structural analysis, hydraulic modeling, SCADA system integration, and additional design work. The fifth amendment authorizes an additional $267,750 on a time and materials basis, reflecting the extended involvement required to address ongoing construction challenges. The project has available appropriations of approximately $23.1 million from the wastewater fund.