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UUUftIMG ils5Oa11TJ5 <br />IRK NORAI <br />April 25, 2012 <br />File: 120161E-0240 <br />Honorable Mayor and City Council <br />City of Little Canada <br />515 Little Canada Road East <br />Little Canada, MN 55117 -1633 <br />RE: LAPHAM HICKEY STEEL <br />CITY OF LITTLE CANADA <br />Dear Council Members: <br />The applicant of the above referenced site provided a revised submittal based on our <br />review comments to the Planning Commission. The re- submitted documents reviewed <br />included a grading and erosion control plan, utility plan, landscape plan, soil borings, and <br />drainage calculations. Based upon our review we would offer the following comments. <br />Existing Conditions <br />1. The previous comments have been addressed and the existing conditions <br />now shown appear to accurately depict the existing conditions of the site. <br />Grading Plan <br />1. A high point should be added to the middle driveway to prevent discharge of <br />water to the street as in the existing conditions. <br />2. The flow through design of the south infiltration basin should be modified to <br />eliminate erosion potential. We would recommend a piped outlet be provided <br />in the basin to allow some rate control benefit in the garden and the curb inlet <br />be designed to allow bypass of the rain garden once the garden is full. <br />3. The overflow for the north infiltration basin discharges water to the north and <br />east toward Country Drive. Based on the survey shots shown it appears <br />there is a possibility of this water running across the adjacent properties <br />parking lot prior to reaching Country Drive. During construction a more <br />detailed survey of the northeast corner of the property should be completed <br />and a berm constructed inside of the property to ensure that drainage from <br />this site will not drain across the adjacent property before reaching Country <br />Drive. <br />Ltr- 042512 -PC <br />10062 Flanders Court NE, Blaine, MN 55449 - Phone: (763) 780 -0450 - Fax: (763) 780 -0452 <br />