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It is estinated that for 1991, 33% of th« total flow was I/I» <br />costing the City an estimated $90,000 in excess MWCC treatment <br />charges. <br />In order to further reduce I/I in a cost-effective manner, <br />the City will embark on an accelerated program to identify and <br />eliminate I/I sources, including the following* <br />1* Review and update the 1981 I/I analysis. The update <br />will include not only additional analysis of those areas <br />studied in 1981, but will analyse flow data from all <br />currently existing portions of the system not covered in <br />that study. <br />2. As part of this update, each City-owned lift station <br />will be analysed as to the extent of its service area, and <br />past flow data will be compared with expected flows in <br />order to identify and isolate any existing I/I sources. <br />3. Flow data from City-owned lift stations will then <br />continue to be collected and analysed on a quarterly basis <br />to quickly identify and eliminate any new sources of I/I <br />that may occur. <br />4. Continuation of current system rehabilitation program <br />as funding permits. <br />5. Immediate initiation of a public education program <br />regarding the need to eliminate illegal connections. <br />€. Adoption of ordinances whic i provide for penalty for <br />illegal connections of sump pumps and foundation drains to <br />the snanicipal sewer system, supported by a proactive program <br />of visual Inspection of residential connections, starting in <br />areas where system analysis indicates the greatest <br />likelihood that flow reduction can be accomplished. <br />19-A <br />I