2702 59TH ST SW 2024-07-05 - Laserfiche WebLink

TABLE OF CONTENTS INTRODUCTION..........................................................................................................1 SCOPE........................................................................................................................1 SITECONDITIONS....................................................................................................... 2 SurfaceConditions....................................................................................................... 2 Subsurface Conditions.................................................................................................. 4 Hydrogeologic Conditions............................................................................................ 5 SENSITIVE/CRITICAL AREA EVALUATION..................................................................... 6 Seismic Related Hazards............................................................................................... 6 ErosionHazard............................................................................................................. 7 Landslide Mechanisms and Hazard.............................................................................. 8 SLOPE STABILITY ANALYSES........................................................................................ 9 CONCLUSIONS AND RECOMMENDATIONS................................................................ 10 General....................................................................................................................... 10 Erosion Control and Slope Protection Measures....................................................... 11 ShoringWall............................................................................................................... 12 Tiebacks...................................................................................................................... 14 Slope Improvements and Drainage............................................................................ 15 StructuralFill.............................................................................................................. 16 Drainage Considerations............................................................................................ 16 Wall and Slope Monitoring........................................................................................ 17 PLAN REVIEW AND CONSTRUCTION MONITORING ................................................... 17 USE AND DISTRIBUTION OF THIS REPORT................................................................. 17 LIST OF FIGURES Figure 1— Vicinity Map Figure 2 — Schematic Site Plan Figure 3 — Cross -Section A -A' Figure 3 — Cross -Section B-B' Figure 4 — Cross -Section C-C' Figure 5 — Unified Soil Classification Chart Figures 7 through 9 — Boring Logs Figures 10 and 11— Hand Auger Logs Figure 12 — Schematic Pile Wall Detail Figures 13 through 17 — Slope Stability Analyses NELSON GEOTECHNICAL ASSOCIATES, INC.