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Report of Geotechnical Exploration and Review <br /> 1105 Femdale Road West,Orono,Minnesota AMERICAN <br /> June 21,2013 ENGINEERING <br /> Report No.01-05798 TESTING,INC. <br /> Our foundation design assumptions include a minimum factor of safety of 3 with respect to <br /> localized shear or base failure of the foundations. We assume the structure will be able to tolerate <br /> total settlements of up to 1 inch, and differential settlements over a 30 foot distance of up to '/2 <br /> inch. <br /> The above stated information represents our understanding of the proposed construction. This <br /> information is an integral part of our engineering review. It is important that you contact us if <br /> there are changes from that described so that we can evaluate whether modifications to our <br /> recommendations are appropriate. <br /> 4.0 SUBSURFACE EXPLORATION AND TESTING <br /> 4.1 Field Exploration Program <br /> Our subsurface exploration program for this project consisted of drilling three Standard <br /> Penetration test (SPT) borings at the site on May 10, May 31 and June 3, 2013. The approximate <br /> � locations of the borings are shown on Figure 1 in Appendix A. <br /> The logs of the borings are included in Appendix A. The logs contain information concerning <br /> soil layering, soil classification, geologic description, and moisture condition. The relative <br /> density or consistency of the naturally-occurring soils is also noted, based on the Standard <br /> Penetration resistance (N-value). <br /> We located the borings in the field by measuring from site features such as the house next door, <br /> the lake, and the excavation limits from the previous house. Our field crew surveyed the ground <br /> surface elevation at the boring referenced to the top rim of the. manhole located along the <br /> driveway. Based on the survey, this benchmark is at an elevation of 929.79 feet. Before we <br /> drilled, we contacted Gopher State One Call to locate public underground utilities. <br /> Page 2 of 10 <br />