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i <br /> MEMORANDUM <br /> DATE: June 20, 1995 <br /> TO: Michael Mornson, City Manager <br /> FROM: Larry Hamer, Public Works Director <br /> ITEM: REPAIR TO THE SANITARY SEWER ON 33RD AVENUE <br /> N.E. <br /> Through our sanitary sewer maintenance program, we televised 33rd Avenue <br /> N.E. and found that 536 feet of 9" clay sewer tile is"broken in front of the high <br /> school. The repairs would be either to dig and replace the tiles or have a liner <br /> installed by Insituform'. <br /> • If digging the line is chosen, we would have to remove the road because of the <br /> depth of the sewer. Costs to repair the sewer line by digging are estimated to <br /> be over $100,000. <br /> If a liner is installed, it would need to withstand the ground PSI for the integrity <br /> of the sewer line. Insituform is the only company that manufactures this type of <br /> liner. To install a liner is estimated to cost approximately $21,700 and the road <br /> would not need to be replaced. <br /> This problem area must be corrected soon so it does not collapse. <br /> RECOMMENDATIONS <br /> I recommend approval of the quotation from Insituform for $21,700 to install a <br /> liner in the 536 feet of sewer on 33rd Avenue N.E. In addition, I recommend <br /> funding of this repair to come from the construction fund because the problem <br /> was unforeseen and therefore not budgeted for in the 1995 budget. <br />