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MainPlace Mall Transformation Project 12126.001 <br />TABLE OF CONTENTS <br />Section Paqe <br />1 INTRODUCTION.................................................................................................. 1 <br />1.1 <br />Site Description and Proposed Development.......................................................1 <br />1.2 <br />Objective and Scope of Work...............................................................................2 <br />2 FIELD <br />AND LABORATORY EXPLORATION.....................................................4 <br />2.1 <br />Subsurface Soil Conditions..................................................................................4 <br />2.2 <br />Groundwater Conditions......................................................................................5 <br />2.3 <br />Field Infiltration Test.............................................................................................5 <br />2.4 <br />Geotechnical Laboratory Testing.........................................................................6 <br />3 SEISMIC HAZARD ASSESSMENTS................................................................... <br />7 <br />3.1 <br />Surface Fault-Rupture..........................................................................................7 <br />3.2 <br />Seismicity and Ground Shaking...........................................................................7 <br />3.3 <br />Liquefaction Potential...........................................................................................8 <br />3.4 <br />Seismically -Induced Settlement...........................................................................9 <br />3.5 <br />Seismically -Induced Lateral Spread.....................................................................9 <br />3.6 <br />Flood hazards......................................................................................................9 <br />3.7 <br />Other hazards....................................................................................................10 <br />4 CONCLUSIONS <br />AND DESIGN CONSIDERATIONS ........................................ <br />11 <br />4.1 <br />Conclusion.........................................................................................................11 <br />4.2 <br />Design Considerations.......................................................................................11 <br />4.2.1 Site Grading...........................................................................................11 <br />4.2.2 Trench Backfill........................................................................................13 <br />4.2.3 Foundation Design Recommendations...................................................13 <br />4.2.4 Earth Retaining Structures.....................................................................15 <br />4.2.5 Surface Drainage...................................................................................16 <br />4.2.6 Corrosion Protection Measures..............................................................16 <br />4.2.7 Pavements.............................................................................................17 <br />4.2.8 Stormwater Management.......................................................................19 <br />5 LIMITATIONS.....................................................................................................20 <br />ATTACHMENTS <br />Figure 1 — Site Location Map <br />Figure 2 — Exploration Location Map <br />Figure 3 — Regional Geology Map <br />Figure 4 — Regional Fault and Historic Seismicity Map <br />Figure 5 — Seismic Hazard Map <br />Figure 6 — Flood Hazard Zone Map <br />!oto <br />jo <br />Leighton <br />