Condition Assessment of 23 Lift Stations

This paper presents the key findings of the condition assessment effort of 23 lift stations in terms of existing condition and projected useful life. The District provides wastewater treatment for over 110 mgd. The wastewater is generated by the unincorporated part of the County, the Strip, and the communities. The District created in 1954 operates and maintains 30 lift station facilities in the District's service area. These lift stations service a substantial portion of the collection system tributaries in the County. The efficient and effective operation of these stations is critical in the overall operation of the District's wastewater collection system. The District determined that a general condition assessment was required for 23 of the lift stations, including the identification of the need for repair and rehabilitation or improvement of the lift station facilities. A proactive approach toward preventive maintenance reduces the operation and maintenance cost of the system over time and considerably reduces the capital cost of rehabilitating the system in the future. The condition assessment performed by the V&A team included the following technical disciplines: Hydraulics;Structural; Corrosion;Cathodic Protection;Coatings; Seismic; Electrical; Instrumentation and Controls;Odor Control; Drainage; Environmental; Safety and Security; Real Estate; and Communications.