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<br />I <br /> <br /> <br />estimated to last 25-30 years, cost approximately $]4] ,000 and result in an assessment <br />of approximately 50% of the total cost. <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />II <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />" <br />I <br /> <br />? The City Engineer requests Council to direct staff on the following regarding the <br />east,west segment of Pleasant Drive: <br /> <br />· Mill and Overlay or Full Reconstruction <br /> <br />. If Reconstruction: Street Width 28' or 32', Curb Type <br /> <br />c. <br /> <br />Proposed Drainage/Water Quality Improvements <br /> <br />The proposed improvements include the installation of three manhole sized stOlID water <br />treatment devices in Amb]e Drive to improve the quality of runoff entering Karth Lake, <br />The installation of these manholes will require a small area of removal and patching in <br />Amb]e Drive, The costs associated with pavement removal and patching in Amble <br />Drive are proposed to be funded out of the Storm Water Utility Fund since no street <br />work is required for Amble Drive, A diagram of a typical treatment manhole is included <br />in the Appendix for information, <br /> <br />Based upon comments from residents received at the public meetings and review of the <br />existing drainage system, we have determined that the existing drainage infrastructure is <br />adequate for the 10 year frequency design storm, A few individuals have indicated that <br />they have experienced water problems in backyards however after field review of the <br />situations we have determined that the problems are due to specific grading conditions <br />in yards and not solvable by modifications to the City storm sewer infrastructure, If the <br />Council elects to reconstruct Pleasant Drive, we would propose to include the addition <br />of a catch basin at the east end of the street to assist with collection of surface drainage <br />in that area, The estimated construction cost for the installation of the three water <br />quality manholes and the additional catch basin on Pleasant Drive is $] 28,400,00 <br /> <br />D. <br /> <br />Proposed Utility Improvements <br /> <br />With the exception of minor storm water drainage repairs, no other public utility work <br />is anticipated at this time, A meeting will be held with the private utility companies to <br />discuss the proposed project and this may result in private utility upgrades, Although <br />private utility upgrades/modifications may be done in conjunction with this proposed <br />project they would not be installed as part of this proposed project. <br /> <br />]5 <br />