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2335 Highway 36 W <br /> St. Paul,MN 55113 <br /> Tel 651-636-4600 <br /> Fax 651-636-1311 <br /> www.bonestroo.com <br /> September 21, 2011 Bonestroo <br /> Melanie Curtis <br /> Planning and Zoning Coordinator <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay, MN 55323 <br /> Re: 840 Old Crystal Bay Road <br /> File No. 000139-11000-1 <br /> File No. 2011-01003 <br /> Dear Melanie: <br /> We have reviewed the plans for the proposed new home construction at 840 Old Crystal Bay <br /> Road. The plans are dated 9-9-11. We have the following comments with regards to <br /> engineering matters: <br /> • The proposed retaining wall is shown as 4.0 feet in height. If field changes increase the <br /> height, engineering design and details must be submitted for review. <br /> • Stormwater runoff must be managed along the south lot line. The proposed conditions <br /> can not increase the amount of runoff to the neighboring property. A revised grading <br /> plan should be required. <br /> • The submitted wetland delineation was not approved by the watershed due its winter <br /> submittal timeframe. A watershed approved wetland delineation must be submitted to <br /> determine the city's wetland buffers and associated easements required on this site. <br /> • This project will disturb more than 100 CY of material. Sediment and erosion control <br /> information meeting the requirements of Orono's City Code 79-7(c)(2) must be <br /> submitted. The minimum $2000 sediment and erosion control financial security should <br /> be required of the owner for this permit. <br /> If you have any questions, please call me at (651) 604-4894 or send an email to <br /> darren.a mundsenCal bonestroo.com. <br /> Sincerely, <br /> BONESTROO <br /> Darren Amundsen <br /> cc: Chris Mattson <br />