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. � ��� �5A1 ���`�'��� ����� Braun Interfec Engineering, Inc. <br /> E.3 g u��❑ �,.: r,,,, ,,,:;:� Y' 6801 Washington Avenue South <br /> ' ' P.O.Box 39108 <br /> . • I N T E RT E C Minneapolis,Minnesota 55439-0108 <br /> 612-941-5600 Fax: 941-4151 <br /> '—' Engineers ond Scienfists Serving <br /> fhe Builf and Natural Environments <br /> January 6, 1993 Project BABX-92-813 <br /> Mr. Paul Madson <br /> Paul Madson and Associates, Ltd. <br /> 420 North Sth Street <br /> Minneapolis, MN 55401 <br /> � Dear Mr. Madson: <br /> Re: Geotechnical Evaluation for the Proposed House at 38XX Bayside Road in Orono, <br /> Minnesota <br /> As you authorized on December 8, 1992, we have completerl the geotechnical evaluation for <br /> the proposed house at 38XX Bayside Road in Orono, Minnesota. The purpose of the evaluation <br /> was to assist you in designing foundations and preparation of plans and specifications for <br /> construction of a new house. The evaluation was completed in general accordance with our <br /> Letter of Confirmation to you dated December 14, 1992. <br /> Summary of Results <br /> Two soil borings were completed in the proposed house area. The general soil profile at the <br /> boring locations consisted of 1 foot of topsoil overlying silty clayey sand, clayey sand, silty <br /> sand, clayey gravel and sandy lean clay to the termination depth of the borings. Groundwater <br /> was not observed in either boring. <br /> Summary of Recommendations <br /> Based on the soil borings and our evaluation, it is our opinion the proposed house can be <br /> supported on conventional spread footings designed to exert a maximum net allowable bearing <br /> pressure of 3,000 pounds per square foot on the soil. � <br /> Although groundwater was not observed in either of the borings, a wetlands area adjacent to <br /> this site has water levels that approach an elevation of 930, or approximately 5 feet below the <br /> existing ground surface at the house location. We recommend the lowest floor grade be set at <br /> an elevation that would allow a minimum of 4 feet of clearance between the floor grade and the <br /> high water level. <br />