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Bonestroo <br />Rosene <br />Anderlik & <br />Associates <br />Engineers & Architects <br />November 11, 1999 <br />Mr. Paul Weinberger <br />Zoning Administrator/Planner <br />City of Orono <br />Post Office Box 66 <br />Crystal Bay. MN 55323 <br />Bonestroo. Rosene. Anderlik €VJd AssociMes. Inc is An AthrmAUye Action '£qu€i! Opportu iity Employer <br />Rrincip.iis Otto G Bonesfroo. PE • Joseph C Anderlik. PE • Marvin L Sorvaia. PE • <br />Glenn R Cook. P£ • Roberj G Schunicht. PE • Jerry A Bourdon. PE • <br />PoDcr! W Rosene. PE Ricn.ird £ furner PE and Susan VI EDcrim. C PA, Senior Consultants <br />Associate Principals Howard A Sanford. PE • Keith A Gordon. PE • Robert R Pfefferle. PE • <br />Richard W Foster. PE • David O Loskota, PE • Robert C Russek, Al A • Mark A Hanson. PE • <br />Michael T Rautmann PE • Ted K F<eid PE • Kenneth P Andersen PE • Mark R Rolfs. PE • <br />Sidney P Williamson. PE . L S • Robert F Kotsrnitn • Agnes M Ring • Allan Rick Schmidt. PE <br />Offices St Paul. Rochester. Willmar and St Cloud. .M.N • Milwaukee. Wl <br />Website WWW bonestroo com <br />Vi-' <br />• I\\\yi <br />v. 'i9 <br />.0 <br />Re: Wayzata Country Club Pond Expansion <br />File* No. 139-2398 <br />Dear Paul: <br />We have reviewed the grading plan for the proposed expansion of two existing ponds on the <br />Wayzata Country Club property. The site is located north of T.H. 12 and south of the Luce Line trail <br />in the south half of Section 36. The ponds are located along the #6 and #12 fairways. We have the <br />following comments in regards to engineering matters. <br />• The plans do not show 10:1 aquatic bench at the pond normal water level as recommended in <br />our 2/4/99 letter. The purpose of the aquatic bench is to provide a margin of safety should a <br />child wander into the pond. The City has permitted the constmetion of ponds without the aquatic <br />bench on other golf courses in the City (Spring Hill). It appears that the proposed design is <br />acceptable given it is a private course and the ponds are at least 300-feet from any residential <br />neighborhood. <br />• We question whether the 4-inch outlet pipes shown for both ponds are adequate for a 50 or 100- <br />year storm event. We cannot verify the correct outlet pipe size without drainage and ponding <br />calculations. This may not be an issue as any flooding of the ponds and corresponding damage <br />will be confined to the Country Club property. <br />• The plans show a balance of cut and fill on site, we would expect that no excess material be <br />hauled off site. <br />• All temporary erosion control must be in place prior to the rt of construction. <br />Please contact me at (651) 604-4863 if you have any questions regarding this matter. <br />Yours very truly, <br />BONESTROO, ROSENE, ANDERLIK & ASSOCIATES. INC. <br />Tom Kellogg <br />Cc: Greg Gappa. City of Orono <br />2335 West Highway 36 • St. Paul, MN 55113 • 651-636-4600 • Fax: 651-636-1311