Reso 2009-115 - Laserfiche WebLink

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City of San Leandro Sewer System Management Plan Volume I System Evaluation Overview The purpose of the System Evaluation is to provide guidance to the City and staff for the identification and prioritization of repair, refurbishments and maintenance activities that will lead to the elimination of structural and conditional mitigated causes of SSOs. The SSMP establishes a goal of "No Overflows," but recognizes that cost benefit analysis and risk management should be used to prioritize system deficiencies identified and planned for correction for the reduction in SSOs. The City intends to accomplish this by implementing a continuous improvement mode leading from Scheduled Maintenance to Preventive and Proactive Maintenance. Proactive maintenance includes performing a periodic condition assessment of the individual system assets to address and correct system problems contributing to system failure before that time occurs. Many of the necessary assessment practices are in place and operating successfully at the City. Assessing the System (Condition Assessment) The City has a preventive maintenance (PM) program currently being managed on the City's collection system in compliance with the requirements of the SSMP. The PM program incorporates Video Inspection /Condition Assessment (VUCA) of the collection system combined with visual manhole inspection as a routine maintenance task or activity of the maintenance department. The purpose is to rate and rank investigated line segments by damage severity, then with engineer and management input, act to correct significant system problems before their becoming the source of a sanitary sewer overflow (SSO). Line segments or other assets selected for damage correction become the capital projects of the upcoming FY, and follow the usual planning, design and construction activities to completion and acceptance as the upgraded asset of the collection system. During these activities, the project, once identified and funded moves without delay to completion with responsibility being with Engineering and Financial Management until the project is accepted and returned to the maintenance phase of its life cycle. CCTV Inspections The City maintains a comprehensive television inspection program. Sewer segments undergo detailed video inspection for both structural and condition damage. The program provides for televising the entire collection system every seven years. Critical defects are identified for spot repairs and deteriorated reaches for potential rehabilitation or replacement. A future cleaning frequency can be determined for each pipe reach based on the results of the inspections. In the future, some pipe reaches may need inspecting every 10 years. ~~~ ~ ~.~