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(d) Provide training on a regular basis for staff in sanitary sewer system operations and <br /> maintenance, and require contractors to be appropriately trained; and <br /> (e) Provide equipment and replacement part inventories, including identification of critical <br /> replacement parts. <br /> C. Operations and Maintenance Program <br /> Collection System Mays <br /> The City has a Geographical Information System (GIS)that includes information for wastewater <br /> collection system assets including: gravity line segments, manholes, pumping facilities, and pressure <br /> pipes (force mains). The City also has information in its GIS for the storm drainage system. The GIS <br /> information is available to internal City staff. In addition, staff carries a list and maps of identified sewer <br /> "Bad Spots" <br /> Preventive Operations and Maintenance <br /> The elements of the City's sewer system O&M program include: <br /> Proactive, preventive and corrective maintenance of gravity sewers; <br /> CCTV inspection; <br /> Rehabilitation and replacement of sewers that are in poor condition; <br /> Periodic inspection and preventive maintenance for the pump stations; <br /> All Utility employees are trained on the use of field equipment; and <br /> Utility staff incorporates the use of Computerized Maintenance Management System (CMMS) to <br /> Monitor Preventative tasks performed associated with preventive O&M Tasks <br /> Gravity Sewers <br /> The City proactively cleans the sewer system every 3 to 5 years, and preventively cleans "Bad Spot" <br /> sewers with a history of issues on an enhanced frequency cleaning interval as necessary. The City has <br /> one hydro-flusher and two combination (hydro/vacuum) units it uses for the cleaning or maintenance of <br /> its sewer mains. Enhanced frequencies are scheduled at 1,3,6 and 12 month intervals for main lines that <br /> require more frequent cleaning, and lines are placed into those frequencies depending upon specific <br /> conditions in individual main lines segments. Approximately 197,700 feet or about 15% of the system <br /> are in the enhanced frequencies ("Bad Spot") category. <br /> CMMS is used to track history for sewer line maintenance, and provide other O&M related functions. <br /> Utilities Division staff performs Root Cutting operations in defined areas every two years. <br /> 171 Page <br />