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(b) Describe routine preventative operation and maintenance activities by staff <br />and contractors; including a system for scheduling regular maintenance and <br />cleaning of the sanitary sewer system with more frequent cleaning and <br />maintenance targeted at known problem areas. The Preventative Maintenance <br />(PM) program should have a system to document scheduled and conducted <br />activities, such as work orders: <br />The City of Santa Ana has prepared a Sewer System Preventative Maintenance Plan <br />(SSPMP) as require by the previous Region 8 WDR (Order No. R8-2002-0014). This <br />plan will be revised and included in the Operation and Maintenance Program task <br />element due on November 2, 2008. <br />The City of Santa Ana has historically cleaned the sewer system once a year and <br />continues to do so today. Once a year is the industry standard for agencies with <br />comprehensive sewer maintenance programs. Areas needing more frequent cleaning - <br />known as hot spots -are cleaned on a monthly or weekly interval. These are the inverted <br />siphons that run under flood control channels or commercial areas with multiple <br />restaurants. <br />The City has two sewer cleaning trucks, each with atwo-man crew. In addition to these <br />four workers, the City's Water Production staff maintain the two sewer lift stations. A <br />total of seven production operators are trained in pump maintenance. <br />In addition to the daily cleaning of the gravity sewer lines by the two man crews, the City <br />has a sewer lift station maintenance program. The City performs weekly inspections of <br />the lift stations, along with periodic equipment servicing based upon the manufacturer's <br />recommendations and industry standards. <br />75A-11 <br />