AGENDA TITLE:
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Adopt a Resolution Authorizing Interim City Manager to Execute Amendment No.1 with West Yost & Associates, Inc., of Davis, for Monitoring Well Network Modification Support at White Slough Water Pollution Control Facility ($76,840) (PW)
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MEETING DATE:
June 3, 2026
PREPARED BY:
Interim Public Works Director
recommendation
RECOMMENDED ACTION:
Adopt a Resolution Authorizing Interim City Manager to Execute Amendment No.1 with West Yost & Associates, Inc., of Davis, for Monitoring Well Network Modification Support at White Slough Water Pollution Control Facility ($76,840).
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BACKGROUND INFORMATION:
The City’s 2024 Report of Waste Discharge (ROWD) requested permission from the Regional Water Quality Control Board (RWQCB) to modify the White Slough Water Pollution Control Facility (WPCF) monitoring well network. The City’s monitoring well network consists of eleven compliance wells and three background wells. This network is relatively extensive compared to similar agencies and supports long-term groundwater elevation and water quality monitoring, with data collection dating back to 2008 and earlier.
The RWQCB subsequently approved modifications to the monitoring network, including removal of select wells (WSM-2, WSM-10, WSM-11, WSM-13, WSM-19, RMW-2, and RMW-3) and replacement of a damaged well (WSM-17R). West Yost is providing management and oversight of the well destruction and replacement work, including coordination with regulatory agencies and preparation of required documentation.
During implementation, an additional effort was necessary due to regulatory requirements and site-specific conditions that were not fully defined at the time of the original agreement. These included securing access agreements with the California Department of Water Resources (DWR), addressing County permitting requirements such as construction bonding, complying with prevailing wage requirements for subcontracted work, and coordinating with property owners for access and easements. In addition, increased coordination and project management were necessary to maintain the project schedule and meet RWQCB compliance requirements.
These additional efforts are necessary to complete the approved monitoring well network modifications and maintain compliance with regulatory requirements.
FISCAL IMPACT:
Compliance with waste discharge permit requirements reduces the City’s risk of regulatory violations and potential fines from the Regional Water Quality Control Board. The requested amendment is funded through the Wastewater Capital and Operating Funds and will not impact the General Fund.
FUNDING AVAILABLE: Wastewater Capital 53199000.77020 (PWWW-26003)
Wastewater Operating Fund (53053003)