2014-01-22 CC Packet - Laserfiche WebLink

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DRAINAGE The City is including in the project the construction of a trunk storm sewer from downtown, south along CSAH 21 to the existing ditch 300 feet south of Center Street, that is planned to accommodate future redevelopment. The City shall supply the signed plan sheets and specifications for the proposed storm sewer. The total cost of the design will be at the expense of the City. All construction documents must be submitted to the County by March 14, 2014. The County will also utilize this storm sewer for the drainage from the County Road. The County shall pay for that portion of the storm sewer trunk line required for the drainage of the County Road. It is agreed by both parties that the discharge from CSAH 21 to the City trunk storm sewer shall be treated in the City pond in the County park. Any improvements to the ditch from CSAH 21 shall be cost shared at 90% City, 10% County (the approx. drainage outletting to this ditch). If there is storm sewer required that is not able to utilize the City trunk storm sewer, the City shall pay for a percentage of the cost of the storm sewer system, including the detention basins and their outlet structures. The City portion of the cost is based on contributing flow through the storm sewer system to the detention basin determined by the product of contributing area and runoff coefficient. BITUMINOUS TRAIL: The City is including a bituminous trail along the east side of CSAH 21. This new trail will extend from Dupre Road to the existing sidewalk at Meadow Lane. This trail location has been agreed to by the City. If this location changes in the future, the additional costs associated with this change will be the responsibility of the City. The existing concrete sidewalk requiring reconstruction between Meadow Lane and Heritage Street will be paid for by the County, per County Cost Share Agreement. The parties understand that the cost for the trail includes: bituminous surfacing, aggregate base, excavation (including muck excavation), borrow material (granular and topsoil), and turf establishment. The parties agree that the County will pay for the design of the trail, wetland mitigation required by impacts caused by the trail, the additional right of way and easements required to construct the trail at the proper location, and any removal items, with the exception of any soils correction in areas of existing trails, required to construct the trail. The City shall be responsible for determining the impacts to the drainage system from filling in the existing ditch along the east side of CSAH 21, and determine the proposed pipe size needed to accommodate this flow. TRAFFIC CONTROL The parties understand and agree that CSAH 2 1 (Centerville Road) will be constructed in the following stages (preliminary, to be finalized with further discussions with the City and will be dependent on the bid letting date and how much time is left in the 2014 construction season): -Stage 1: Road closed from CSAH 34 (Birch St) to Hunter's Trail for construction. -Stage 2: Road closed from Hunter's Trail to Heritage Street for reconstruction. 3 24