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Report of Geotechnical Exploration and Review <br />Fox Street Improvements, Orono, Minnesota AMERICAN <br />July 29, 2016 ENGINEERING <br />Report No. 20-14448 TESTING, INC. <br /> <br /> <br /> <br />Page iv <br /> <br />TABLE OF CONTENTS <br /> <br />1.0 INTRODUCTION .................................................................................................................... 1  <br />2.0 SCOPE OF SERVICES ............................................................................................................ 1  <br />3.0 PROJECT INFORMATION ..................................................................................................... 1  <br />4.0 SUBSURFACE EXPLORATION AND TESTING ................................................................ 2  <br />4.1 Field Exploration Program .................................................................................................... 2  <br />4.2 Laboratory Testing ................................................................................................................ 2  <br />5.0 SITE CONDITIONS ................................................................................................................. 3  <br />5.1 Topography and Surface Conditions ..................................................................................... 3  <br />5.2 Pavement and Base Thickness ............................................................................................... 3   <br />5.3 Subgrade Soils ....................................................................................................................... 3  <br />5.4 Groundwater .......................................................................................................................... 4  <br />5.5 Engineering Review of Soil Properties ................................................................................. 4  <br />6.0 RECOMMENDATIONS .......................................................................................................... 5  <br />6.1 Approach Discussion ............................................................................................................. 5  <br />6.2 Definitions ............................................................................................................................. 6  <br />6.3 Subgrade Preparation ............................................................................................................. 6  <br />6.4 Existing Subgrade R-Value ................................................................................................... 9  <br />6.5 Pavement Design ................................................................................................................... 9  <br />7.0 CONSTRUCTION CONSIDERATIONS .............................................................................. 11  <br />7.1 Potential Difficulties ............................................................................................................ 11  <br />7.2 Excavation Backsloping ...................................................................................................... 11  <br />7.3 Observation and Testing ...................................................................................................... 12  <br />8.0 LIMITATIONS ....................................................................................................................... 12  <br /> <br />STANDARD SHEETS <br /> Definitions Relating to Pavement Construction <br /> <br />APPENDIX A – Geotechnical Field Exploration and Testing <br /> Boring Log Notes <br /> Unified Soil Classification System <br /> Figures 1 to 3 - Boring Locations <br /> Subsurface Boring Logs <br /> Results of Sieve Analysis Tests <br /> <br />APPENDIX B – Geotechnical Report Limitations and Guidelines for Use