6.3. SR 05-01-2006 - Laserfiche WebLink

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I I I I I I I I I I I I I I I I I I I b. Watermain There currently is watermain on 185th Avenue at the Naples Street intersection. This watermain would be extended up Naples Street and then westerly to the end of 186th Avenue. Each existing home would receive a one-inch water service extended to the easement line. Additional services would be extended to undeveloped lots or potentially future lots to be split from existing properties. Fire hydrants would be strategically placed along the route for fire protection. The proposed watermain improvements on shown on Exhibit 4 and the estimated costs are presented in the Project Cost section of the report. c. Street/Storm Drainage It is proposed to construct a permanent urban-style street after the installation of sanitary sewer and watermain on Naples Street and 186th Avenue. The street would meet the City requirements for width, being 32 feet wide face-of-curb to face-of-curb. As shown on Exhibit 5, the pavement section will consist of 3 12" of bituminous and 6" of aggregate base to provide a section that meets the City standard. Soil borings will be obtained during the preparation of plans and specifications to verify pavement design requirements. An integral part of the street design is the concrete curb and gutter which collects runoff and directs it to the storm sewer inlets. Concrete curb protects the edge of the bituminous surface and adjacent boulevard area from erosion. The proposed concrete curb and gutter will be a barrier-style. Driveway aprons will be accomplished by transitioning from the street to the driveway. Each driveway will be reviewed during the preparation of plans and specifications to determine the transition required. All driveways will receive a 4-foot wide concrete driveway apron where the existing driveway approach meets the new concrete curb section. Catch basins and small diameter storm sewer pipe will be used to convey runoff from the street to the Elk River. Given this developed nature of this neighborhood, it is unlikely there will be opportunity to provide ponding. Therefore, storm water inlets and manholes will use sumps and other devices to provide sediment control prior to discharging into the Elk River. The estimated cost for the proposed street and storm drainage improvements are included in the project cost section of the report. 3