Agenda - Council - 04/25/2000 - Laserfiche WebLink

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Mallard Ponds Review Letter April 20, 2000 Page 2 of 4 parking must be restricted on either side of the private streets to maintain adequate emergency vehicular access. No parking signs should also be erected along the private roads. Staff also requests that the cul-de-sac be re-named to 140* Avenue NW, the northerly private street be re-named to 140t~ Lane NW and the southerly private road be re-named to 140'~ Avenue NW. Traffic Generation Anal~,sis: The latest revision of a traffic analysis was prepared by Mr. James Johnson of Hakanson, Anderson and Associates, dated April 4, 2000. Three scenarios were presented in this report, with regard to traffic generations. Under the scenario which generates the greatest mount of traffic, no senior citizen occupancy of detached and twin homes were included. These numbers reflect 1606 daily trips being generated from the proposed development, 125 additional trips in the peak morning hours and 157 new trips in the peak evening hours. Street Lights: The Developer should make arrangements with Con_nexus to install the streetlights and send the utility bills to the homeowners association. The City Engineer. should be provided with a copy of the street light layout for incorporation into the City street light map. Grading and Drainage: The grading and drainage plan has been presented on sheet 2 of 3 prepared by John Oliver and Associates. It is proposed that the townhome development be graded such that drainage transmits from the center of the site to the east and west. Storm sewers are provided on the east and west sides of the development conveying runoff to two storm water detention ponds located along the DNR Protected Wetland. The southerly pond drains to the northerly pond which outlets into the wetland. There is an outlet from the DNR protected wetland, which discharges to the Rum River. This plan is generally acceptable with the following observations. 1. A permit from the Lower Rum River Water Management Organization needs to be obtained. Calculations will need to be submitted verifying the adequacy of the ponding for water quality treatment. 2. Greater detail needs to be provided for the grading between the northern property line and lots I0 through 16. It is my recommendation that storm sewer be provided at the rest of these lots to avoid the need for draining between the residential units. There is minimal grade in this .... To accommodate drainage. 3. The storm sewer system shall be a private system maintained by the appropriate owner associations. 187