WEST YOST ASSOCIATES (#2027082) - Laserfiche WebLink

Todd Yamello May 26, 2026 Page 4 transmitters, pressure transmitters and switches, and VFDs), and development of installation and integration guidelines to facilitate compatibility with PLC and SCADA systems. • SCADA Hardware Standards Development – West Yost will develop SCADA hardware standards that define City standards for PLCs, OITs, remote site network equipment, control panel components, and associated power and communication hardware. Standards will identify approved manufacturers, minimum technical requirements, cybersecurity features, and hardware lifecycle expectations, including refresh cycles. Control panel design standards will also be established, including panel sizing, layout, voltage segregation, labeling, and wire management requirements. • PLC Programming Standards Development – West Yost will develop custom standard programming objects for the City. This process will include defining the overall function of each object and the parameters used within each. This also includes documenting how standard SCADA graphical objects are to be used with each object. Finally, this sub-task will entail documenting overall standard practices for developing PLC logic. • Tagging Standards Development – West Yost will work with the City to develop standard tag conventions based on the existing SCADA and PLC tags in use. This includes defining the various portions of a standard SCADA tag to facilitate a better understanding of associated plants, process areas, instrument types, equipment types, and loop numbers. • SCADA Graphical Standards Development – West Yost will document graphical standards based on the objects used within the existing City SCADA system. This includes capturing screenshots of major equipment and instrumentation used throughout the existing SCADA system and defining the various parameters and color schemes associated with each of those components. • Alarming Philosophy and Management Standards Development – West Yost will work with the City to develop alarm standards based on existing SCADA and PLC alarms. This includes documenting alarm tags, alarm severities, alarm descriptions, graphical representation of alarms within the SCADA system (e.g., equipment alarms, transmitter alarms, alarm colors, alarm banners, alarm summary screens), and operator responses. • HMI Database Conventions Standards Development – West Yost will work with the City to document existing HMI database conventions. This includes the documentation of trend and alarm database conventions. • Report Standards Development – West Yost will work with the City to develop report standards. This includes conducting workshops with the City to gather feedback on report templates and content. • Version Control Standards Development – West Yost will work with the City to develop version control standards for SCADA and PLC applications. This includes recommended practices regarding managing and tracking changes, maintaining the integrity and reliability of applications, and reverting to previous versions if needed. Docusign Envelope ID: C46F6467-48FC-8755-8247-09E863327CA7Docusign Envelope ID: A1F306CD-3D85-8219-8045-1E730ABF3862