Laserfiche WebLink
   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 /> <br /> <br />Equal Opportunity Employer <br /> wsbeng.com <br /> S:\Community Development\Projects\Planning Cases\Nature's Refuge\Staff Reports\20180611 CC (RZ & PUD PP)\20180611 v2 (revised 20180608)\a2 20180606 Natures Refuge Preliminary Plat Review traffic and geo.docx <br />Memorandum <br /> <br /> <br />To: Katie Larsen, City Planner <br /> <br />From: Diane Hankee PE, City Engineer <br /> Chuck Rickart PE Traffic Engineer <br /> <br />Date: June 6, 2018 <br /> <br />Re: Nature’s Refuge Preliminary Plat Review <br /> WSB Project No. 011406-000 <br /> <br /> <br />We have reviewed the Preliminary Plat documents received May 17, 2018 for the Nature’s <br />Refuge development including: <br /> <br /> Groundwater Letter prepared by Haugo GeoTechnical Services <br /> Revised Traffic Study prepared by Spack Consulting dated May 17, 2018 and June 4, <br />2018 <br /> <br />The following are our review comments that should be responded to in writing by the applicant. <br /> <br />Engineering <br /> <br /> General <br /> <br />The Nature’s Refuge development includes 95 acres north of CSAH 14 (Main Street), west <br />of CSAH 23 (Lake Street) and east of Wood Duck Trail. The revised project proposes 62 <br />single family houses and associated infrastructure. This property was originally part of a <br />larger development of which an Environmental Assessment Worksheet (EAW) was <br />prepared. The evaluation concluded that the project did not have the potential for significant <br />environmental effects. The EAW included a comprehensive analysis of the area which we <br />incorporated as part of our review for Nature’s Refuge. <br /> <br />The site has relatively flat topography, with elevations ranging from 904 to 914. Much of <br />the site is below 905, which is the approximate elevation of the delineated wetlands on the <br />site. The geotechnical conditions of the site indicate that there is one foot of topsoil <br />overlaying glacier outwash including silty sand and poorly graded sand. Sandy lean clay <br />was found 29 and 40 feet below grade. The groundwater elevation at the south end of the <br />site is 904 and 898 at the north end of the site. <br />