Agenda - Council - 08/14/2007 - Laserfiche WebLink

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Final Plat: GAD's Prairie Staff Review Letter May 19, 2007 Page 2 of 5 Grading & Drainage: A grading and drainage plan has been prepared by Mr. Tim Eggerichs PE. This proposes conveying runoff to a detention pond to be located in the northwestern corner of the plat. Once this pond is full, additional runoff will backup and discharge into the storm pond system located in The Ponds subdivision to the east. The drainage swale along the rear of Lots 4 through 9 is proposed at a grade flatter than 2 %. A certificate of grading will be required prior to occupancy to ensure that a minimum grade of 1% has been achieved. A permit from the Lower Rum River Water Management Organization had been obtained for the GADS Prairie. subdivision on June 15, 2006. It was terminated upon the transfer on the project to a new developer who received a permit for the Pine Prairie subdivision on February 15, 2007. Although the differences between these two subdivision plans are small, the new plat should be reviewed by the LRRWMO. Sidewalks and Trails: A 10 -foot, bituminous trail is proposed along the eastern edge of the property. The City typically requires the trail to be located entirely on the property outside of the right -of -way, unless special circumstances are determined by City Council to warrant locating on public property. Similar to the reduced width of the right of way for Helium Street, staff feels the unique shape of the parcel warrants this consideration. Sidewalks are required on one side of all public streets. However, due to the proximity of the trail to the proposed Helium Street, staff believes it is reasonable to waive this requirement. Utilities: This plat will be served by municipal sanitary sewer and water. Trunk charges will be collected for units in excess of the singe family unit which is currently located on the property and serviced with watermain. Traffic Generation Analysis: A traffic impact study was prepared for the GADS Prairie subdivision in June 2006 by Bolton & Menk Inc. The result of the analysis concluded that an acceptable Level of Service (LOS) would remain at the proposed intersection onto CSAH 5 resulting from this development. The conclusions of this report recommended that a Stop sign be placed at the proposed access onto CSAH 5 at the access to the development and that the County be consulted on the location of the proposed access since its proposed location is inconsistent with County spacing access guidelines. Access and Streets: The plat proposes to gain access off of County Road 5 ( Nowthen Boulevard). A letter dated May 7, 2007, was received from the Anoka County Highway Department addressing this request for access. This review letter also addresses access to the highway from the adjacent parcel to the northwest at 14544 Nowthen Boulevard. The letter notes that the GAD' S Prairie development does not meet County access spacing guidelines and sight distance requirement. The sight distance obstructions appear to be trees which could be removed. The tree preservation plan identifies nine trees located in the right of way which are to be saved. This plan will need to be reevaluated to address this concern. The County has proposed issuing.a temporary access permit to CSAH 5 to serve both the GADS Prairie development and the adjacent property to the northwest, provided that there would be a commitment from the City and the other affected property owners to work together to create a City street system that would serve both these properties and eliminate access to CSAH 5 at a future date. -157—