Agenda - Public Works Committee - 07/15/2008

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west into the large detention pond located north of the railroad tracks. The availability of this stann sewer allows these catch basins to be connected into this system. Observations: Staff has prepared cost estimates and recommendations for addressing each of these storm water issues as follows: . 16350 Kangaroo Street - Staff has been working with the two property owners adjacent to the common property line to facilitate a solution for this issue. Resolution has not been made at this time. This issue may need to be resolved in a future program. . 6941 152nd Avenue - Staff proposes constructing a 15 inch diameter storm sewer line within the drainage and utility easement that exists along the property line. A larger easement may need to be obtained to avoid impacting the mature pine trees within the easement. Since this project drains Jaspar Street directly into a DNR protected wetland, the project anticipates a large diameter sump manhole in Jaspar Street to meet water quality requirements. The cost of this project is estimated to be $22,900. . Llama Street and 163rd Avenue - Staff proposes reconstructing a 21 inch storm sewer system extending from the location of the current outfall to the intersection of Llama Street and 163rd Avenue. This would reduce the overland flow distance by 550 feet and would correct the blinding of the existing storm sewer by providing open back storm water castings. The storm sewer has been sized such that it can be extended in the future into segments of Llama and 163rd Avenue which were overlaid last year. The cost of the project is estimated to be $64,800. . Kamacite Street and 1481h Lane/Avenue - Staff proposes that this storm water problem be corrected either by regrading a portion of the property located at 7062 148th Lane or installing a backyard storm sewer discharging into the existing manhole on the southwest comer 0 f Limonite Street and 148 th Lane. Staff will continue to discuss options and impacts with the two affected properties. The cost of the project is estimated to be between $9,600 and $21,200 depending on the option selected. The grading option could be performed by the Public Works Department later in the season. The storm sewer option may be performed by the Public Works Department or could be contracted through quotations. . 6043 Highway 1 0 ~. The existing catchbasins would be reconstructed and connected to the existing storm sewer located on the north end of the property. The cost of this project is estimated to be $36,100. 48