9 <br />GeoPacific <br />Real-World Geotechnical Solutions <br />Investigation • Design • Construction Support <br />TABLE OF CONTENTS <br />List of Appendices <br />List of Figures <br />PROJECT INFORMATION <br />SITE AND PROJECT DESCRIPTION <br />REGIONAL GEOLOGIC SETTING <br />REGIONAL SEISMIC SETTING <br />Cascadia Subduction Zone <br />FIELD EXPLORATION AND SUBSURFACE CONDITIONS.... <br />Soils <br />Groundwater and Soil Moisture <br />PRELIMINARY CONCLUSIONS AND RECOMMENDATIONS <br />Site Preparation Recommendations <br />Engineered Fill <br />Excavating Conditions and Utility Trench Backfill <br />Erosion Control Considerations <br />Wet Weather Earthwork <br />Preliminary Recommendations for Structural Foundations <br />Concrete Slabs-on-Grade <br />Permanent Below-Grade Walls <br />Drainage <br />Flexible Pavement Design: Private Drive and Parking Lot <br />Wet Weather Construction Pavement Section <br />Seismic Design and Soil Liquefaction <br />UNCERTAINTIES AND LIMITATIONS <br />REFERENCES <br />APPENDIX <br />18-4986, 177 Day Island Road GRPT <br />Version 1, August 27, 2018 <br /> <br /> <br /> <br /> <br /> <br /> <br />i <br />i <br />.......................1 <br /> <br /> <br />......................1 <br /> <br /> <br />......................2 <br /> <br /> <br />.......................2 <br /> <br /> <br />.......................2 <br /> <br /> <br />.......................3 <br /> <br /> <br />.......................3 <br /> <br /> <br />......................4 <br /> <br /> <br />.......................4 <br /> <br /> <br />.......................5 <br /> <br /> <br />......................6 <br /> <br /> <br />.......................6 <br /> <br /> <br />......................7 <br /> <br /> <br />......................7 <br /> <br /> <br />......................8 <br /> <br /> <br />.....................10 <br /> <br /> <br />.....................10 <br /> <br /> <br />....................12 <br /> <br /> <br />.....................12 <br /> <br /> <br />....................14 <br /> <br /> <br />.....................15 <br /> <br /> <br />....................17 <br /> <br /> <br />.....................18 <br />GEOPACIFIC ENGINEERING, INC. <br />