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Item Number: H.5. CITY COUNCIL REPORT SUBJECT: Third Amendment to Cooperative Purchasing Agreement with West Yost & Associates, Inc. for SCADA Program Management and Implementation Services MEETING DATE: January 27, 2026 TO: Mayor and Council FROM: Jamie McCracken, Utilities Director REVIEWED: Reyes Medrano, Jr., City Manager PURPOSE: The Utilities Department is requesting approval of the Third Amendment to the Cooperative Purchasing Agreement between the City of Tolleson and West Yost & Associates, Inc. to increase the annual compensation for program management and implementation services related to operationalizing the City’s Supervisory Control and Data Acquisition (“SCADA”) Master Plan. BACKGROUND: On July 10, 2024, the City entered into a Cooperative Purchasing Agreement with West Yost & Associates, Inc., based on a City of Tempe cooperative contract, for program management and implementation services to support the City’s Supervisory Control and Data Acquisition (“SCADA”) Master Plan. SCADA systems are used to monitor and control water and wastewater infrastructure, including treatment facilities, pump stations, and other critical assets, allowing Utilities staff to operate systems efficiently, reliably, and safely. As project needs have evolved, the City has determined that additional services are required to continue progress on SCADA-related initiatives. DISCUSSION: The Third Amendment increases the annual aggregate compensation from $200,000 to $350,000 per fiscal year to accommodate the additional scope of services needed to support the Utilities Department’s ongoing SCADA program efforts. These services include program management, coordination, and implementation support for SCADA system upgrades and operational improvements. All other terms and conditions of the original Agreement remain unchanged. The Agreement will remain in effect through April 20, 2027, unless otherwise terminated in accordance with its terms. The Third Amendment to the Cooperative Purchasing Agreement with West Yost will allow the consultant to perform a comprehensive assessment of the City’s water and wastewater operational systems to identify potential vulnerabilities. As an information technology and systems integration firm specializing in the “brains” of water and wastewater operations, West Yost will evaluate existing control, monitoring, and data management systems and provide recommendations to enhance system reliability, cybersecurity, and operational resilience. These services will support the City’s ongoing efforts to protect critical infrastructure and ensure the safe and efficient operation of its water and wastewater facilities. BUDGET IMPACT: Funding for the increased compensation is included in the Utilities Department’s adopted budget. The Amendment establishes a not-to-exceed annual amount of $350,000 per fiscal year for services, subject to budget appropriation. RECOMMENDATION: Staff recommends approval of the Third Amendment to the Cooperative Purchasing Agreement between the City of Tolleson and West Yost & Associates, Inc., and authorization for the City Manager to execute the Amendment. ATTACHMENTS: 1. 01 27 26 UT - Third Amendment to CPA - West Yost & Associates, Inc. - End Date 04 20 27