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5.2.1 Maintain Operational Efficiency <br />5.2.1.1 Maintain Operational Efficiencv Policies <br />^ Initiate reconstruction or rehabilitation program for sanitary <br />sewer to repair or replace segments of system in distressed <br />condition or determined to be over capacity. <br />^ Initiate and continue a closed circuit television (CCTV) <br />inspection program to provide updated condition observations of <br />the collection system at a minimum of every five years. <br />^ Complete annual inspections and cleaning of lift station. <br />5.2.2 Inflow and Infiltration <br />5.2.2.1 Inflow and Infiltration Reduction Plan Policies <br />^ The City should implement an UI reduction program to isolate <br />and prioritize sewer rehabilitation in their sanitary sewer <br />collection system. <br />5.3 Sanitary Sewer System Recommended Improvements <br />This section discusses recommended improvements to address existing <br />sanitary sewer system deficiencies. The improvements are shown in <br />Figure 8 and are summarized below. This section should be updated <br />following the completion and review of data from the City's current <br />CCTV effort. <br />5.3.1 Correction of Deficiencies <br />• 5.3.1.1 Pipe Settlement <br />Review of CCTV video footage has revealed a number of pipe <br />settlements in excess of 4-inches. The dip that is created by these <br />settlements cause low velocities and sedimentation of solids which <br />results in on-going sewer maintenance problems. These pipe segments <br />are difficult to repair without removing and replacing the settled sections <br />of pipe. It is recommended that the entire segment from manhole to <br />manhole be replaced for each settled location identified. If possible, the <br />timing of these improvements should be incorporated into the City's <br />street reconstruction program. <br />5.3.1.2 Root Intrusion <br />The review of CCTV video footage also revealed a significant amount <br />root intrusion in the sanitary sewer system. Roots can cause flow <br />restrictions and require continuous sewer monitoring and maintenance. <br />It is recommended that the City implement an on-going sewer <br />rehabilitation program to address this problem. The program would <br />include rehabilitation of the sanitary sewer using trenchless methods for <br />sections identified through CCTV inspections. <br />5.3.2 CCTV Inspection <br />It is recommended that the City implement a CCTV inspection program <br />for the sanitary sewer collection system. This program will allow the <br />City to monitor the system and respond to problems in a proactive <br />manner. <br />• <br />TComprehensive Plan UpdateT <br />City of Falcon Heights <br />AFAL000701.00 <br />Page 33 <br />