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<br />2020 Research Park Drive <br />Suite 100 <br />Davis CA 95618 <br /> 530.756.5905 phone <br />530.756.5991 fax <br />westyost.com <br /> <br /> <br /> <br /> <br />May 26, 2026 SENT VIA: EMAIL <br /> <br /> <br />Todd Yamello <br />Utilities Planning Manager <br />City of Pleasanton <br />P.O. Box 520 <br />Pleasanton, CA 94566 <br /> <br />SUBJECT: Proposal for Engineering Services for West Yost to Perform Supervisory Control and Data <br />Acquisition (SCADA) Standards Development <br /> <br />Dear Todd: <br />The purpose of this letter proposal is to provide the City of Pleasanton (City) with a proposed scope of <br />services, budget, and schedule for the development of SCADA Standards. <br />In 2023, West Yost prepared a SCADA Management Plan (SCADA MP) for the City that established a <br />baseline assessment of the existing SCADA system, identified key gaps and vulnerabilities, and outlined a <br />phased SCADA Program Implementation Plan (Appendix E). A primary finding of that effort was the need <br />for improved and standardized documentation governing instrumentation, SCADA hardware and <br />software, control strategies, and cybersecurity practices. The SCADA MP also identified several <br />foundational near-term projects critical to system resilience, including the relocation of the backup core <br />SCADA server, improvements to remote access, and implementation of Operational Technology (OT) <br />system monitoring. <br />This project will implement those recommendations by evaluating updated cybersecurity risks and gaps, <br />developing formal SCADA and Instrumentation Standards, and preparing a structured project plan to <br />guide consistent implementation. In addition to the standards development effort, this scope includes <br />preparation of Bases of Design and planning-level cost estimates for the additional SCADA resilience <br />projects to support future budgeting and execution. The objective is to provide the City with practical <br />standards documentation and defined next-step project frameworks that promote consistency, reliability, <br />and cybersecurity across the SCADA environment, regardless of the entity performing the work. <br />SCOPE OF SERVICES <br />The following is a list of the key tasks necessary to perform this proposed scope of services, each further <br />described below: <br />• Task 1. Project Management <br />• Task 2. AWIA Cybersecurity Assessment Crosswalk and Gap Analysis <br />• Task 3. SCADA Standards Development <br />Exhibit ADocusign Envelope ID: C46F6467-48FC-8755-8247-09E863327CA7Docusign Envelope ID: A1F306CD-3D85-8219-8045-1E730ABF3862