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r <br />Preliminary Report <br />City of Plymouth <br />Storm Drainage <br />M part of the street reconstruction on Femdale Road, storm sewer is proposed to be constructed to <br />improve the drainage along the street. Storm sewer would be installed at the five low points on the <br />roadway. Storm drainage would be directed southerly and easterly to existing ponding areas and <br />wetlands. Water quality ponds will be constructed where feasible. Because the land adjoining the <br />project is nearly fiilly developed, property to construct ponds may be impossible or impractical to <br />obtain. The Minnehaha Creek Watershed District may allow payment to a general water quality <br />fund in lieu of pond construction. ^ <br />Construction Seouencinp <br />The roadway will be constructed in a manner so as to minimize any impacts to residential access. <br />Each day the contractor will excavate a section of roadway to full width and grade, install fabric <br />and place the 400min of Class 5 aggregate base. The street would then be opened to traffic at the <br />end of the construction day. Access would only be restricted during the day and limited to a <br />segment that can be completed. Traffic would have either an existing bituminous or new gravel <br />surface to travel on during non-construction hours. <br />PERMITS AND EASEMENTS <br />The reconstruction of Femdale Road will require a Pollution Control Agency Storm Water permit, <br />a Minnehaha Creek Watershed District permit and State Aid plan approval. The DNR may require <br />a permit for storm sewer improvements near the Luce Line trail. Construction easements will be <br />necessary to construct the street improvements on Femdale Road. Storm sewer easements will be <br />required for ponding and drainage off of Femdale Road. <br />COST ANALYSIS <br />Cost Summary <br />A detailed cost estimate for the project has been prepared and is included in the Appendix of this <br />report. All costs are based on anticipated unit prices for the 1997 construction se.*’"The total <br />project costs include five (5) percent for contingencies and twenty (20) percent for legal, <br />engineering and administration. No costs are included for easement acquisition or city legal fees. <br />The Cities of Plymouth and Orono will share equally in the street and storm sewer costs for <br />Femdale Road north of Wayzata. The City of Orono will bear all costs for street and storm sewer <br />constmction north of the Trunk Highway 12 bridge and south of the Plymouth / Orono border. The <br />City of Plymouth will be responsible for costs associated with walkway constmction north of the <br />70303q>t <br />rva-*.* »-Tir