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^ mBonestroo <br />Rosene <br />■ Anderl ik & <br />|\ \ Associates <br />Engineers & Architects <br />April 10. 2000 <br />Wendy Bottenberg <br />Assistant Zoning Administrator <br />City of Orono <br />Post Office Box 66 <br />Crystal Bay. MN 55323 <br />Bonettroo. Rosene. Anderltk and Associates. Inc. Is an Affirma: .e Action/Equal Opportunity <br />Employer and Employee Owned <br />Principals: Otto G Bonestroo. PE • .Varvin L Sorvai»i, PE • Gicrr “ Cook. PE • <br />r?ot)efl G Schunicnt, PE • Jerry A Bourdon. PE <br />Senior Consultants: Poocri W Rosene PE • Joseph C Anclerlik • Richard E Turner. PE • <br />Susan M EDerlm. C PA <br />Associate Principals: Howard A Sanford. PE • Keith A Gordon . Robert R Pfefferle. PE • <br />Richard W Poster PE • David O Loskota PE • Robert C Russek A a . Mark A Hanson. PE • <br />M'cr^ael T Rauimann PE • Ted K Field. PE • Kenneth P Andersor • Mark P Rc.'fs. PE • <br />David A Bonestroo. MBA* Sidney P \llilliamson. PE L S • Agre' *.* ' ''g \1 B ^ • Allan Rick Schmidt. PE <br />Offices: St Paul. St Cloud. Rochester and Wiiimar MN • Milwaukee Jt'i <br />\Mebsiie: wwwbonestroocom <br />I' <br />Re: Elaine Erickson Site Plan <br />File No. 139-2486 <br />Dear Wendy: <br />We have reviewed the site plan for the proposed improvements on the Erickson property. The site is located <br />at 1270 Spruce Place in the southwest quarter of Section 8. We have the following comments in regards to <br />engineering matters. <br />• The proposed gravel driveway is shown at a grade of about 3.6^. This appears acceptable, we recommend <br />that the driveway be paved with bituminous or concrete to minimize erosion. The propc-icd curb and gutter <br />should be concrete. <br />• Proposed grading is shown right up to the north and south lot lines. This has created problems between <br />neighbors in other parts of the City. We recommend that easements from the affected property owners be <br />acquired prior to any grading activity. Silt fence should be shown on the plans and be in place prior to any <br />grading. <br />• A drainage area map and drainage calculations should be submitted for review. It appears that the drainage <br />boundaries ore being revised, with more water being diverted to the street. The grading plan and drainage <br />area map should be enlarged to show the swale where the water will be routed to the lake. The proposed <br />runoff routed through this swale should not be increased from existing conditions. <br />• The proposed retaining wall removal north of the north lot line shows no grading. It is unclear how this <br />will be accomplished, plans should show the appropriate grading necessary for the wall removal. The <br />proposed new retaining wall will require that wall details and an engineered design be submitted for <br />review. <br />Please contact me at (651) 604-4863 if you have any questions regarding this matter. <br />Yours very truly, <br />BONI STROO, ROSENE. ANDERLIK & ASSOCIATES. INC. <br />'5^/oTyf <br />Tom Kellogg <br />Cc: Greg Gappa, City of Orono <br />• .w- <br />2335 West Highway 36 • St. Paul, MN 55113 • 651-636-4600 • Fax. 651-636-1311