10/01/2007 Council Packet - Laserfiche WebLink

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of loop detectors, pedestrian push buttons, and pedestrians (walk/don't walk) indications. Minor work will include the installation of handholes, conduit, and cables. Within the addition to the pedestrian walk/don't walk indicators, pavement markings will be provided for pedestrian cross - walks. C. STORM SEWER AND STORM WATER TREATMENT IMPROVEMENTS For the 77th Street realignment, it is proposed to direct the roadway runoff to the low point located at the intersection of 77th Street and Marilyn Avenue. The roadway runoff will be collected by installing catch basins along the curb lines and routing the storm water through 15 -inch storm sewer pipes. The drainage is then proposed to outlet to the east side of 77th Street into an infiltration basin. Until the adjacent properties are developed, an overflow swale for the infiltration basin must be constructed to allow drainage to reach the ditch system along Lake Drive. When the adjacent properties are developed in the future, the overflow for the infiltration basin can be re- routed through a new storm sewer system. Lastly, in conjunction with the Lake Drive right turn lane construction, minor storm sewer improvements are required to collect the runoff from the newly constructed turn lane. It should be noted that the proposed infiltration basin is being designed in accordance with the Rice Creek Watershed District's (RCWD) proposed rules. The proposed rules have not been officially adopted by the RCWD. However, it is anticipated that the proposed rules will be in effect at the time of project initiation and final design. D. SANITARY SEWER IMPROVEMENTS: The proposed improvements include extending the existing 10 -inch trunk sanitary sewer to the west, for approximately 300 feet, through the intersection of 77th Street and Marilyn Avenue. In addition, the proposed improvements include extending an 8 -inch sanitary sewer to the north within Marilyn Avenue for approximately 100 feet. The sanitary sewer is being extended through the proposed roadway improvements at the intersection of 77th Street and Marilyn Avenue to facilitate future expansion of the City's sanitary sewer system in the area. Feasibility Report City of Lino Lakes, Minnesota 5 13849.006