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' � <br /> � <br /> B011L'Stl'00 Z335 West Highway 36 ■ St. Paul, MN 551 13 ....�—�" <br /> _ Rosene Office: 651-636-4600 ■ Fax: 651-636-1311 I�,.r� .6Pf� <br /> Ande1'IiIC& www.bonestroo.com ' <br /> ( <br /> Associates � � <br /> Engineers&Architects ' <br /> .Janttary 10, 2007 <br /> Mr. Michael P. Gaffron <br /> Senior Planning Coordinator <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay,Minnesota 55323 <br /> Re: Amber Woods Office Center � <br /> File No. 000139-07000-1 <br /> Plat No. 07-3250 � . <br /> Dear Mike, , . <br /> We have reviewed the plan submittal dated 12-14-06 for the Amber Woods O�ce Center. The plans <br /> consist of 5 proposed office buildings. We have the following comments with regards to engineering <br /> matters: <br /> • A preliminary plat should be submitted for review and approval. The plat should include right- <br /> of-way or an easement over the proposed future access road extending east-west across the site. <br /> • The City should consider whether the proposed road should be constructed as part of this <br /> project, or should be constructed in the future, as stated in the plans. � <br /> . • The half-size plan set should be scaleable. <br /> � A geoteclulical report and R-value recommendation should be subinitted for review. <br /> • Storm sewer calculations shouId be submitted for review. <br /> • Sanitary sewer and water main pIan and profile sheets should be included in the final plans. <br /> � Engineered retaining wall design and details should be submitted for review and approval for all <br /> walls over 4 feet in height or for tiered walls that have less than two times the wall height in <br /> . separation. <br /> • The proposed hydrant between the two north buildings should be moved so that it is not located <br /> in the parking lot. . <br /> • The proposed sanitary sewer should connect to the existing manhole so that it is perpendicular <br /> to the downstream pipe. This may require constructing an additional manhole. <br /> � • The proposed 10.3% slope on the sanitary sewer is too steep. The slope should be reduced to at <br /> least 5%. This may require an outside drop structure. <br /> • The proposed entrance to the site from the futut•e road should be designed to accommodate <br /> future access fcom the west, as well as fiom the east. The current configuration would require a <br /> turn of almost 180 degrees for vehicles coming fiom the west, and is not f.easible. <br /> • The plans appeat• to show that several existing retlining walls that are located on tlie <br /> 8onestroo recently merged wifh DSU,bringing together some of fhe best�eg'ronal talents in engineering,architecture,p/anning,landscape architecfure, <br /> and urban design.Our combined team now provides/ntegrated services in one organizafion. <br /> ■ St. Paul, St. Cloud, 'Rochester, MN ■ Milwaukee, WI ■ Chicago, IL <br /> � Afflrmative Actlon/Equal Opportunity Empioyer and Employee Owned <br />