Geotechnical Engineering Report 12 10 2024 submission

Mavis Store #2296 December 10, 2024 ECS Project No. 44:2100 Page ii TABLE OF CONTENTS EXECUTIVE SUMMARY .......................................................................................................................1 1.0 INTRODUCTION ............................................................................................................................2 2.0 PROJECT INFORMATION ...............................................................................................................3 2.1 Project Location .................................................................................................................................. 3 2.2 Proposed Construction ....................................................................................................................... 3 3.0 FIELD EXPLORATION AND LABORATORY TESTING ..........................................................................5 3.1 Subsurface Characterizations.............................................................................................................. 5 3.2 Groundwater Observations ................................................................................................................ 6 3.3 Laboratory Testing .............................................................................................................................. 6 4.0 DESIGN RECOMMENDATIONS .......................................................................................................7 4.1 Shallow Foundations ........................................................................................................................... 7 4.2 Floor Slab ............................................................................................................................................ 8 4.3 Seismic Design Considerations............................................................................................................ 8 4.4

.............................................. 8 4.3 Seismic Design Considerations............................................................................................................ 8 4.4 Pavements........................................................................................................................................... 9 5.0 SITE CONSTRUCTION RECOMMENDATIONS ................................................................................. 11 5.1 Subgrade Preparation ....................................................................................................................... 11 5.1.1 Demolition ............................................................................................................................ 11 5.1.2 Stripping and Grubbing ......................................................................................................... 11 5.1.3 Proofrolling ........................................................................................................................... 11 5.1.4 Potential Undercuts .............................................................................................................. 11 5.1.5 Site Temporary Dewatering .................................................................................................. 12 5.2 Earthwork Operations ....................................................................................................................... 12 5.2.1 Existing Man-Placed Fill ........................................................................................................ 12 5.2.2 Structural Fill ......................................................................................................................... 13 5.2.3 On-site Soil Re-use ................................................................................................................ 13 5.2.4 Excavation Considerations .................................................................................................... 14 5.3 Earthwork and Foundation Observations ......................................................................................... 14 5.4 Utility Installations

................................ 14 5.3 Earthwork and Foundation Observations ......................................................................................... 14 5.4 Utility Installations ............................................................................................................................ 14 6.0 CLOSING..................................................................................................................................... 16 APPENDICES Appendix A – Diagrams & Reports  Site Location Diagram  Boring Location Diagram(s)  Subsurface Cross-Section(s)  Geologic/Soil Survey Maps Appendix B – Field Operations  Reference Notes  Exploration Procedures  Boring Logs