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J^Bonestroo <br />^^Rosene <br />Anderfik& <br />I Associates <br />Enginvtrt 4 Af«h»i*ct» <br />H' <br />2335 V/lejt Mig*iw^y 36 • Si PauI. MN 55»I3 <br />Office 6SI-636-46<W • Fjik 651 636 I3!I <br />ift »vvv Dc/'<i:'c a eo*n <br />ex.ei <br />'Ui*Sqjtember 28.2004 <br />Ms. Melanie Cums <br />Planner <br />City ofOrono <br />Po<: Office Box 66 <br />Crystal Bay. MN 55323 <br />Re: 1220Tonkaw'a <br />File No 139^«H) <br />Plat No. 04.3060 <br />Dear Melanie: <br />We have reviewed the sketch plan for the proposed grading and shoreline tmpros ements to the property located <br />at 1220 Tonkaw-a. The proposed improvements include the construction of retaining walls and associated site <br />improvemetusi »Ici%g the lake side of the home. We have the following commenu with regards to engineering <br />• Thr ^ajcscd sketch does not provide sufficient detail for us to comment on A detailed plan .should <br />b' that includes existing and proposed contours extending SO-feet be>x>nd all lot lines The <br />,:^ii j ^curately show topography including all lot lines, exuting trees, buildings, reuinir - <br />wails »n>' other structures and hardcover. <br />• Die p*V.-4houli include at least three sections showing existing and proposed elevations between the <br />lake ana the hope across the frontage of the property. <br />• Additional rttainmg wall information should be provided with the revised plans. At a minimum the <br />proposed wall type should be identified as well as the proposed top and bottom of wall elevations. The <br />plans should clearly identify existing and proposed walls. Any walls that exceed 4-fcet in height <br />require a separate engineered design and detail submittal. <br />• The plans should include erosion and sediment control details and detailed planting and restoration <br />lnfcrma*inn. <br />If you have any questions please call me at (651) 604-4863. <br />Yours very truly, <br />BONESTRCK). ROSENE. ANDERLIK & ASSOCIATES. INC. <br />Tom Kellogg <br />Cc: Greg Oappa, City of Orono <br />• St Ptul St C!Oi 5. e^c^eIrer. Wiitmar. MN • Milwaukee. W( • Cnicago !L <br />am .^«i ,• Op»*«lb' Implvyvt 0*r.*a