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<br />Chairperson Elvig clarified the Committee is directing staff to provide information regarding <br />other elements in the City that would fall under the same category as the pond liners. The <br />second issue is the existing ponds and an assessment policy similar to road improvements or <br />anything of that nature to the benefiting property owners. <br /> <br />Councilmember Dehen stated he gets nervous about these ponds in terms of costs. As he <br />understands it the liner is like pool or roofing liners, which are extremely expensive. He <br />expressed concern about big ponds that may have a breach and not knowing where that breach is <br />located. <br /> <br />Chairperson Elvig questioned what will happen with the dysfunctional pond at that point. <br /> <br />Public Works Director Olson replied it is only dysfunctional from an aesthetic standpoint; it will <br />operate fine. If the leak is going slow the same volume of water will get to the aquifer. <br /> <br />Councilmember Dehen expressed concern that even a pond lined with clay that dries out will <br />crack and the pond will not function the way it was designed. <br /> <br />Councilmember Olson noted there should be language included in the policy regarding the City's <br />access to the easement to perform any necessary maintenance of the pond. <br /> <br />Public Works Director Olson clarified that the maintenance responsibility for the ponds will be <br />on the homeowners association, but an easement will still be required for the City to have access <br />if there is a flooding issue. <br /> <br />Consensus of the Committee was to direct staff to develop a policy relating to the installation of <br />lined ponds within the City based on the above discussion. <br /> <br />Case #2: <br /> <br />Consider Shouldering Material to be used in 2007 Street Maintenance <br />Program <br /> <br />City Engineer Jankowski explained as a part of the process of overlaying streets in mral areas it <br />becomes necessary to transition the new raised grade of the pavement to the adjacent grade. <br />Ideally, this transition would be the one and one half inch height of the overlay tapered over a <br />distance of two feet. In practice the actual width of this shoulder varies with the slope to the <br />ditch and the actual fall to the grade next to the pavement. At intersections there is often a <br />depression of several inches even before the overlay from traffic cutting short the corner. Mr. <br />Jankowski stated the material that has been used for shouldering through the 2003 program had <br />been topsoil dressed with seed and mulch. While this eventually would provide an aesthetic <br />appearance of having a maintained lawn ending at the edge of the bituminous, using topsoil for <br />shouldering has a number of shortcomings. Mr. Jankowski reviewed the following <br />shortcomings: <br />. It is easily washed away by heavy rain events and would need to be replaced by the <br />Public Works Department. <br />. It settles and does not provide the original transition after a period of time. <br /> <br />Public Works Committee / May 15, 2007 <br />Page 6 of 11 <br />