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Jim Ericson October 9, 1997 411 page two It is in the city's best interest to approve the plat with the most restrictive access as possible. Three of the four lots in the preliminary plat have direct access to Silver Lake Road. The city should act accordingly to limit access to this site to the local roadway network. Direct property access is most efficiently and safely provided by internal circulation and streets that provide access to TH 10. Mn/DOT Metro Division's long range investment plan identifies TH 10 as a preservation corridor. The plan places the highest priority on the use of resources to preserve the existing transportation system. Preservation strategies maintain the facility or roadway in its current condition to serve its current purpose. If future TH 10 improvements are required because of this development proposal's trunk highway access, the improvements will be the responsibility of the project proposer, the city or both. We prefer to work in partnership with landowners and the city to prevent problems before they occur. Our ability to preserve safe and efficient traffic flow on the highway is compromised when we lack city and landowner cooperation. It is our desire to work with you to manage the highway system effectively. • We will allow the requested accesses. However, we strongly recommend consolidation of access and local roadway use to best serve the operation of TH 10 and safety of the proposed project's users. We require access permits for all three accesses to TH 10. We require construction of a continuous right turn lane on eastbound TH 10 for permit approval. This development proposal necessitates the continuous right turn lane and is the responsibility of the project proposer, the city, or both. All accesses that require installation of culverts must use 6:1 slopes. Placement of culverts must occur beyond the clear zone. The permit applicant must submit plan and cross-sectional drawings of the proposed access, showing the required turn lane. Please contact Wayne Lemaniak of our Traffic Engineering Section at 779 5188 for additional information concerning the continuous right turn lane and proper lane striping. Additional information and the appropriate permit forms may be obtained from Bill Warden of our Permits Section at 582-1443. • We require a Mn/DOT storm water drainage permit for the proposed development. The permit application must include hydraulic computations and drainage area maps, showing existing and proposed conditions and addressing 100-year storms. Existing drainage patterns and rates of runoff affecting Mn/DOT right of way must be perpetuated. The site's storm water discharge rate must not increase. Any questions regarding Mn/DOT drainage concerns may be directed to Gene Bovy of our Water Resources Section at 779- 5053.