3400 RIVERFRONT BLVD Geotech Report 2022-10-25

• • • • TABLE OF CONTENTS PAGE NO. • 1.0 INTRODUCTION 1 • 2.0 PROJECT BACKGROUND 1 • 3.0 PURPOSE AND SCOPE 2 • 4.0 SITE CONDITIONS 3 • 4.1 Regional and Site Geology 3 4.2 Surface Conditions 4 • 4.3 Subsurface Conditions 4 O 5.0 CONCLUSIONS 6 • 5.1 Summary 6 5.2 Long-Term Settlement Caused by Filling 6 • 5.3 Seismic Hazards 9 • 5.4 Riverbank Slope Stability 11 • 6.0 RECOMMENDATIONS 12 6.1 Surcharge Fill 12 • 6.2 Settlement Monitoring 13 • 6.3 Site Preparation 13 • 6.4 Construction Considerations 14 • 6.5 Excavations 15 6.6 Temporary Slopes 16 • 6.7 Permanent Slopes 16 • 6.8 Erosion Control 16 • 6.9 Structural Fill 17 • 6.10 Cement Amendment 18 6.11 Drainage Considerations 18 • 6.12 Foundations 19 • 6.13 Utilities 20 • 6.14 Retaining Structures 20 O 6.15 Seismic Design Parameters 21 6.16 Pavement 22 • 7.0 OBSERVATION OF CONSTRUCTION 23 • 8.0 LIMITATIONS 23 • REFERENCES 25 • • FIGURES • Vicinity Map Figure 1 • Site Plan Figure 2 Previous Surcharge Locations Figure 3 • Grading Plan Summary Figure 4 • Settlement Plate Locations Figure 5 • Settlement Plate Detail Figure 6 • • • • C EODESIGN= Polygon-128-01:091615