Agenda - Council - 06/27/2006 - Laserfiche WebLink

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Kelly Acres Final Plat Review June 23, 2006 $ of 6 · Topographic information needs to be extended a distance of 100 feet beyond the limits of the plat. This information should be added for the property north of Outlot A of Kelly Acres. The normal water level and 100 year flood elevation needs to be identified for each pond and natural waterbody within the subdivision. The 100 year flood elevation for this subdivision needs to acc6mmodate back to back I00 year event, since there is no outlet for stormwater generated in this development. The ponds north of 171st Avenue and west of Wolverine Street need to be labeled and encumbered with drainage and utility easements, · Pre and post runoff calculations have been submitted. This information will be reviewed by the Lower Rum River Water Management Organization (LRRWMO). A permit must be obtained from the LRRWMO for this development. · The size of storm sewers must be identified on the plan. · The table specifying housing types and identifying grades is not accurate. Based upon the proposed lot comer elevations, a number of lots contain grades flatter than 1% which is not acceptable. Some proposed spot elevations along lot lines are inconsistent with proposed contours. Please submit a revised grading, drainage, and utility plan that addresses these comments. Streets and Access: The plat proposes to gain access from 171~ Avenue and 170th Avenue through Prairie Meadows. Sidewalks: The street plans propose the construction of sidewalk along the west/south side of Wolverine Street, the north side of 170th Avenue, and the west side of Tiger Street along the extent of the Rum River Prairie plat. All sidewalks must be one foot off the property line and must be 6 inches thick in driveways and ADA compliant. As part of the plat, sidewalk must be constructed along the west side of Tiger Street from Armstrong Blvd to the northern extent of the Kelly Acres plat. Please revise the grading plan to indicate this. Traffic Generation Analysis: A traffic generation analysis has been completed for the proposed Rum River Prairie-Kelly Acres subdivision. The report indicates that all intersections will perform at acceptable levels under the "build" scenarios. Stop sign installation must occur at all streets intersecting with Tiger Street. At full-built out, left turn lanes are suggested for Armstrong Boulevard at Tiger Street. Water Utilities: The submittals propose the installation of watermain as a portion of the infrastructure improvements. The type of watermain material is not specified. It should be noted that plastic watermain has not be approved as an acceptable watermain material by the City. The submittals also propose the installation of individual wells to service the development until it can -304-