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A <br />WSB <br />Building a legacy — your legacy. 701 Xenia Avenue South <br />Suite 300 <br />Minneapolis, MN 55416 <br />Tel: 763-541-4800 <br />Fax: 763-541-1700 <br />Memorandum <br />To: Katie Larsen, City Planner <br />From: Diane Hankee PE, City Engineer <br />Date: April 06, 2016 <br />Re: Watermark <br />Plan Review <br />WSB Project No. 2029-820 <br />We have reviewed the Preliminary Plat for Watermark in Lino Lakes, MN prepared by Carlson <br />McCain received on March 7, 2016. <br />For reference please see notes on the Preliminary Plat enclosed, along with the following <br />comments that should be responded to in writing by the applicant: <br />GRADING, EROSION AND SEDIMENT CONTROL <br />The preliminary grading, erosion and sediment control plans, dated March 4, 2016 and prepared <br />by Carlson McCain have been reviewed and we offer the following initial comments: <br />1. No erosion and sediment control comments at this time, a further review will be <br />completed once the construction plans for the applicable phase is submitted. <br />2. The applicant needs to provide project phasing detail or narrative, to address the <br />construction staging, berm and trail construction, and utility installation coordination. <br />3. Roadway grades are to be increased or storm water catch basins are to be less than 400 <br />feet apart. <br />4. Cul du Sac grades are to be a minimum of 1 percent grade. <br />5. Roadways are to have high points at intersections when within 100 feet of the <br />intersection. <br />6. Review low floor, low openings, high water levels per city's stormwater management <br />policy <br />7. Storm sewer utilities located in rear yards should be designed/constructed along rear lot <br />lines where practical. Lot configuration could be modified to accommodate. <br />8. Percent grade of rear lot drainage swales required (2% desired — 1 % min.) <br />9. Consider adding rock filtration underdrains along rear lot lines with storm sewer to <br />enhance water quality and reduce volume discharge. <br />10. Emergency overflow locations and elevations not shown for all ponds, wetlands and lake <br />features. <br />Equal Opportunity Employer <br />wsbeng.com <br />K:\02029-820\Admin\Docs\20160516 Engineering Review Lino Lakes-Madamy.docx <br />