Agenda - Council - 06/27/1995 - Laserfiche WebLink

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Storm Sewer The project area is presently served by a storm sewer located at the intersection of Xkimo Street NW anq 143rd Avenue NW. It is proposed that an 18 inch storm sewer be extended to serve {the intersection of 143rd Lane NW and Xkimo Street NW. An additional inlet for storm water will be placed between 143rd Lane and 143rd Avenue NW. The proposed itorm sewer improvements are shown on Exhibit B. Street Improvements Xkimo Court NW and 143rd Lane NW are proposed to be constructed as standard seven ton design residential streets, 30 feet in width having surmountable concrete curb and gutter andl bituminous pavement. The bituminous pavement shall be a minimum of two inures thick with four inches of Class V base. Xkimo Street NW lying north of 143rd !Avenue NW shall consist of a 42 foot wide street with B -6/12 curb along both sidos of the street. The pavement shall be constructed with four inches of bituminous end four inches of Class V base sufficient to maintain a nine -ton road design standard. Due to the proposed commercial development on west side of Xkimo. Street, a fivefoot wide concrete sidewalk be placed along the -west side of Xkimo Street NW. Aimo Street NW will be improved to the T.H. 47 right of way. A total of four street I�Ights will be placed along Xkimo Street NW and the cul -de -sacs. Following completion Hof the aforementioned street improvements, the boulevard areas behind the curb will b covered with a minimum of four inches of black dirt, seeded, fertilized and mulched to establish turf. The proposed street and sidewalk improvements are shown on Exhibit B. is i f A detailed estimate of construction costs are presented in Appendix A. In addition to the construction *ts, overhead costs include engineering, construction staking and inspection, legal, bdministration, interest during construction and contingencies. The overhead costs for the project are estimated based upon percentages of construction cost. Those percentages are estimated to be as follows: Engineering 9% Staking nd Inspection 7% Bonding rand Legal 3% City Staif Administration 5% Conting f ncies 4% Interest Puring construction 2% Table 1 contains a surkmary of total project costs which have been divided between construction and o�erhead costs and also categorized between direct costs 2 K5