Geotechnical Investigation Report

J001369-001-R-Rev0                                                                                                                               August 2021


Table of Contents
1.0     INTRODUCTION .................................................................................................................................... 4
2.0     PROPOSED DEVELOPMENT ............................................................................................................... 4
3.0     SITE DESCRIPTION .............................................................................................................................. 4
4.0     INVESTIGATION .................................................................................................................................... 6
4.1     Fieldwork................................................................................................................................................. 6
5.0     INVESTIGATION FINDINGS .................................................................................................................. 7
5.1     Desktop Study ........................................................................................................................................ 7
5.2     Subsurface Conditions ............................................................................................................................ 7
5.3     Groundwater ........................................................................................................................................... 7
5.4     Surface Drainage .................................................................................................................................... 7
5.5     Vegetation ............................................................................................................................................... 7
5.6     Existing Structures .................................................................................................................................. 8
6.0     ASSESSMENT OF LAND STABILITY ................................................................................................... 8
6.1     Existing Conditions ................................................................................................................................. 8
6.2     Stability Risk Assessment ....................................................................................................................... 8
7.0     DEVELOPMENT IMPACTS AND MITIGATION MEASURES ............................................................... 9
7.1     Site Preparation and Trafficability ........................................................................................................... 9
7.2     Filling and Compaction ........................................................................................................................... 9
7.3     Excavations...........................................................................................................................................10
7.4     Foundations ..........................................................................................................................................10
7.4.1      Site Classification .............................................................................................................................10
7.4.2      Footing Design ..................................................................................................................................10
7.5     Retaining Wall Design Parameters .......................................................................................................11
7.6     Drainage and Erosion ...........................................................................................................................11
7.7     General Foundation Maintenance ........................................................................................................12
8.0     SUMMARY AND CONCLUSIONS .......................................................................................................12
9.0     LIMITATIONS .......................................................................................................................................12




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