CCP 11-12-2002 - Laserfiche WebLink

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times that of curb constructed by machine en masse, For these reasons, the City Engineer is recommending that the east west segment of Pleasant Drive be reconstructed. The neighborhood has a complete storm drainage system which functions as designed and meets current design standards, Runoff from the west portion of the neighborhood drains to Karth Lake with the remainder draining to a wetland adjacent to Highway 96. Runoff is not treated prior to entering Karth Lake or the wetland, Two neighborhood informational meetings were held during the summer of 2002 to discuss the proposed improvements and collect resident feedback, Minutes from the public meetings are included in the appendix. I I I I I B. Proposed Roadway Improvements Pleasant Drive (east-west segment) Discussion The proposed roadway improvements for Karth Lake Road, Pleasant Circle, Amble Circle and the north,south segment of Pleasant Drive include surface milling of the bituminous pavement adjacent to the existing concrete curb and the construction of a 2" bituminous overlay over the entire pavement surface, Based upon a field review of the streets a small amount of existing curb will be replaced where significant settlement has occurred and some areas of the roadway will require patching prior to the overlay however these areas are less than 5% of the total surface area, The project area and proposed improvements are illustrated in Exhibits 13 and 14, This segment of Pleasant Drive is significantly more deteriorated than the other neighborhood streets both in bituminous surface distresses (resulting in a PCI of 26) and the amount of existing curb that has settled over time, A few of the residents along this street have attended the public meetings and have acknowledged that their street is in poorer condition than most and have expressed concern over the frequent puddling whieh occurs in the gutters due to the excessive settlement. Some neighbors also commented that they would like to have driveway aprons like those on Amble Drive which was reconstructed in 1994. Although it would be possible to replace the settled curb and gutter, patch the worst sections of the street plior to milling and overlaying, the resulting cost is significantly greater per foot than the other neighborhood street costs, The residents and council should consider how their investment is better spent. We have had a geotechnical engineer perform soil borings of the street as a part of our feasibility analysis, The borings indicate a very shallow pavement section over an existing clay base which is stable but retains moisture and is therefore susceptible to frost heaving during freeze/thaw cycles, The geotechnical engineer anticipates that the addition of 12" of sand subbase with drain tile connections to the existing storm sewer catch basins would provide the necessary drainage and protection from frost heaving damage, The City's standard street construction includes sand subbases and drain tile for this purpose. Overlaying this street is estimated to last 10 years, cost approximately $37,400 and result in an assessment of approximately $12.00 per foot. Full reconstruction (28 feet) is 14 I I II I I I I I I I , I