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OPERATION AND MAINTENANCE PROGRAM © 2025 Fischer Compliance, LLC. All rights reserved. Sewer System Management Plan licensed for Redwood City use only Page 27 of 59 4.2. Preventive Operation and Maintenance Activities WDR REQUIREMENTS Att. D-4.2 (pgs. D-4/D-5) ”A scheduling system and a data collection system for preventive operation and maintenance activities conducted by staff and contractors. The scheduling system must include: • Inspection and maintenance activities; • Higher-frequency inspections and maintenance of known problem areas, including areas with tree root problems; • Regular visual and closed-circuit television (CCTV) inspections of manholes and sewer pipes. The data collection system must document data from system inspection and maintenance activities, including system areas/components prone to root-intrusion potentially resulting in system backup and/or failure.” COMPLIANCE The elements of the City’s sewer system O&M program include: • Proactive, preventive, and corrective maintenance of gravity sewers; • Ongoing CCTV inspection program to determine the condition of the gravity sewers; • Periodic inspection and preventive maintenance for the lift stations and force mains; • Rehabilitation and replacement of sewers that are in poor condition; and • Proper training for City employees and contractors to assure proper operations and maintenance of the collection system facilities. The City utilizes a computerized maintenance management program, Hiperweb, to program and track all required inspection and maintenance activities within the collection system to help proactively prevent blockages, operational problems, and spills. Use of Hiperweb allows the City to make informed decisions regarding its assets and infrastructure by using the collected data from field work orders and documented inspections. Hiperweb maintains historical data for all maintenance activities and provides a basis for critical analysis and data-driven planning and decision-making today and into the future. This allows for prioritizing and planning routine activities such as CCTV inspections, pipe cleaning and pump station maintenance activities. In addition, Hiperweb is used to plan and schedule higher-frequency inspection and maintenance activities such as Hot Spot cleaning and selective root control activities. Emergency and other reactive activities are documented in work orders as well. The scheduling system allows staff to put certain activities on a preventive schedule and rely on Hiperweb to automatically create work orders on a prescribed interval. Work orders for other activities are generated by supervisory or field crew personnel on an as-needed basis. EFFECTIVENESS The City utilizes the following Key Performance Indicators for measuring effectiveness of this Element: • Are the City’s maintenance, operations, and engineering work orders periodically audited for accuracy and completeness? • Does the City monitor “open,” “overdue,” or “not yet completed” work orders to ensure completion of tasks? ATTY/RESO.0077/CC RESO SEWER SYSTEM MANAGEMENT PLAN - EXHIBIT A REV: 07-14-25 LF Page 34 of 317