Agenda - Council - 04/09/1996 - Laserfiche WebLink

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Storm sewer system improvements include a system of pipes and inlets starting at the depression in the southwest corner of the site, where the proposed storm pipe will maintain water in the depressed area by functioning as an overflow only. This overflow pipe continues north to 152nd Avenue and then proceeds easterly in 152nd Avenue outletting into a sedimentation pond at the edge of the wetland. The proposed streets are the City standard, 31 foot back-to-back with concrete surmountable curb and gutter.: All streets will have 2 inches of bituminous pavement with 4 inches of Class 5 gravel base. Three ten foot wide bituminous trails will be constructed. The first extends north from the Sodium Street cul-de-sac bulb to 153rd Avenue. In the south boulevard of 153rd Avenue a trail will be constructed from the northeast corner of the development, where it will connect to the trail constructed with FOX KNOLL, extending west to Sunfish Lake Boulevard. Thel trail then turns south along the east side of Sunfish Lake Boulevard terminating at the southwest corner of the plat. In addition to the trails to be constructed with the project, provision will be made for a potential future sidewalk along the west side of Sodium Street by depressing the curb at the return points on the west side of Sodium Street at 151st Lane and 152nd Avenue. ESTIMATED COSTS The estimated construction and project costs are summarized in Table 1. Detailed cost estimates are included in Appendix A. The estimated costs in Table 1 include the costs that are assessable to,the project on a lateral basis and the costs which are to be paid by trunk funding. Trunk costs include oversizing of the watermain from an 8 inch to a 12 inch pipe, extra depth of installation and oversizing from an 8 inch to a 10 inch for the sanitary sewer trunk line in 152_nd Avenue and the jack-boring and extension of watermain and sanitary sewer west of the west plat boundary across Sunfish Lake Boulevard. Table 1 estimated project costs include indirect and overhead costs at 13% of the construction costs. The usual estimated percentage for these costs is 30%, however, the developer will be paying for engineering and Construction services directly. The component percentages are as follows: Engineering Staking and Inspection Fiscal and Legal Administration Contingencies Total 0% 0% 3% 5% 5% 13%