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City of Redwood City Page 30 Sewer System Management Plan, March 2018 Element IV IV-5 Lift Stations The City currently operates and maintains thirty-one (31) separate lift stations throughout the collection system. The lift stations are identified below in Figure IV-2. Each of the lift stations have separate emergency response and contingency plans that detail lift station asset information, spill notification procedures, maps of surrounding pipe infrastructure, bypass procedures, lift station control systems including lockout/tagout procedures and available vendors to assist with emergency response if required. Appendix IV-3, Lift Station Locations and Descriptions provides basic asset information of each of the 31 lift stations. Figure IV-2: Lift Station Location Map The Wastewater Division’s Utilities Specialist and supporting Utilities Worker are responsible for performing and overseeing preventive and emergency maintenance at the lift stations, force mains, and gate and check valve systems. An example of a completed Lift Station Preventive Maintenance Check List and an associated work order are included in the Appendix IV-4. The Check List and work order forms are used to document preventive maintenance activities and any additional corrective maintenance, rehabilitation, or replacement needs identified at that time. Additionally, the Utilities Specialist conducts regular Lift Station Condition Assessments using the form in Appendix IV-4. Each of the 31 lift stations is assessed on a five-year cycle and provides additional information for the creation of repairs and capital program projects detailed below in Appendix C, IV-10. Documentation of dates of recent generator testing and scheduled key maintenance is also kept on a clipboard at each lift station. Corrective maintenance activities or special projects are scheduled by the Utilities Field Supervisor based on priority. The Utilities Specialist and Utilities Worker recommend and discuss prioritization of these projects with the Utilities Field Supervisor based on their findings and knowledge of the facilities and from the condition assessment findings. Lift station preventative maintenance is scheduled in two to three week cycles. Ideally, preventive " " " " " " " " "" " " " " " """ " " " " " " " " " " " " " ± City of Redwood City Sewer System 0 1 20.5 Miles Legend "Lift Stations City Sewer City Sewer Service Area 6.2.A. - Page 38