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Bonestroo,Rosene,Anderlik and Associates,Inc.is an Affirmative Action/Equal Opportunity Employer
<br /> Bonestroo �nd Employee Owned
<br /> Principals:Otto G.Bonestroo,P.E• Marvin L Sorvala,P.E• Glenn R Cook,f'.E.• Robert G.Schunicht,P.E•
<br /> 0 Rosene lerry A Bourdon,f E• Mark A Hanson,PE.
<br /> Anderlilc & Senior Consultants:Robert W Rosene,PE •Joseph C Anderlik,PE• Richard E Turner,PE• Susan M Eberlin,CPA.
<br /> Associate Principals:Kei[h A.Gordon,P.E.• Robert R.Pfefferle,FE• Richard W.Foster,P.E• David O.Losko[a,ftE•
<br /> Assoei�tes Michael T Rautmann,PE• 7ed K Field,PE• Kenne[h f'Anderson,f?E • Mark R Rolfs,PE• David A Bonestroo,M B A •
<br /> Sidney f'.Williamson,f.E,LS.• Agnes M.Ring,M.B.A.• Allan Rick Schmid[,f'.E.• Thomas W.Peterson,P.E•
<br /> �Cl ineers &Arehiteets �^mes R.Maland,P.E• Miles B.Jensen,P.E• L.Phillip Gravel III,f'.E.• Daniel J.Edgerron,P.E• Ismael Martinez,f?E.•
<br /> 9 Thomas A.Syfko,P.E• Sheldon J.Johnson• Dale A Grove,f'E• Thomas A Roushar,PE• Robert J.Devery,f�E.
<br /> AU�TUSt G1, 7��3 Offices:St.Paul,St Cloud,Rochester and Willmar,MN• Milwaukee,WI• Chicago,IL
<br /> Website:www.bonestroacom
<br /> Mike Gaffron
<br /> Planning Director
<br /> City of Orono
<br /> Post Oftice Box 66
<br /> Crystal Bay, MN 5�3?3 � �
<br /> � ��i:;
<br /> !,r,y:`�:+r�
<br /> Re: 720 North Arm Drive
<br /> Plat No. 03-2907 `. '-'
<br /> �,
<br /> FiIP ?�1c. 139-0�-0��
<br /> � Dear Mike, ��
<br /> We have reviewed the revised grading plan dated home adciition at 720 North Arm Drive. We have the
<br /> following comments in regards to engineering matters.
<br /> • The proposed swales along the east and west sides of the home approach grades of 25%. This will be an
<br /> erosion problem. Typical grass swales should be constructed at grades between 2% and �% to convey
<br /> water without ecosion concerns. The proposed swales should be constructed utilizing methods to control
<br /> erosi�n (check dams, erosion mat, etc.).
<br /> • The swales adjacent to the existing portio�l of the home will be 3' to 5' feet wide without encroachind onto
<br /> � the neighbor's property. It may be necessary to acquire tempocary easements to construct the swales as
<br /> sho�vn.
<br /> • Tl�e plans should identify the �lraintile discharge location shown nt the noi-theast corner of the existing
<br /> home.
<br /> • The erosion and sediment control measures should be in place, inspected ancl approved by the city prior to
<br /> any grading or construction activities.
<br /> Please contact me at(651) 60�-4863 if you have any questions regarding this matter.
<br /> Yours very truly,
<br /> BONES"I'ROO, ROSENE, ANDERLIK & ASSOCIATES, INC.
<br /> __...---�--�
<br /> s
<br /> ��
<br /> Tom Kellogg
<br /> Cc: Greg Gappa, City of Orono
<br /> 2335 West Highway 3G ■ St. Paul, MN 55]13 ■ G51-G3G-4G00 ■ Fax: G51-G3G-1311
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