J001783-001-R-Rev1

Ashley and Caroline Hermes




Table of Contents

1.0       INTRODUCTION ....................................................................................................................... 1
2.0       PROPOSED DEVELOPMENT .................................................................................................. 1
3.0       SITE DESCRIPTION ................................................................................................................. 1
4.0       METHOD OF INVESTIGATION ................................................................................................ 4
4.1       Fieldwork.................................................................................................................................... 4
5.0       RESULTS OF INVESTIGATION ............................................................................................... 4
5.1       Published Geological Information .............................................................................................. 4
5.2       Subsurface conditions ............................................................................................................... 5
5.3       Topography ................................................................................................................................ 5
5.4       Surface Drainage ....................................................................................................................... 5
5.5       Vegetation .................................................................................................................................. 5
5.6       Buildings, Other Structures, etc. ................................................................................................ 5
6.0       ASSESSMENT OF LAND STABILITY ...................................................................................... 6
6.1       Existing Conditions .................................................................................................................... 6
6.2       Stability Risk Assessment.......................................................................................................... 6
7.0       DEVELOPMENT IMPACTS & MITIGATION MEASURES ........................................................ 8
7.1       Earthworks ................................................................................................................................. 8
7.1.1         Site Preparation & Trafficability ............................................................................................. 8
7.1.2         Excavatibility .......................................................................................................................... 8
7.1.3         Re-use as Fill ......................................................................................................................... 8
7.1.4         Batter Slopes ......................................................................................................................... 9
7.1.5         Soil Dispersion & Erosion Protection ..................................................................................... 9
7.1.6         Filling and Compaction .......................................................................................................... 9
7.2       Retaining Structures .................................................................................................................. 9
7.3       Site Classification .................................................................................................................... 10
7.4       High Level Footings ................................................................................................................. 10
7.5       Drainage .................................................................................................................................. 12
7.6       General Foundation Maintenance ........................................................................................... 12
8.0       SUMMARY AND CONCLUSIONS .......................................................................................... 12
9.0       LIMITATIONS .......................................................................................................................... 12




Tables
Table 1: Stability Risk Levels ............................................................................................................................. 7
Table 2: Qualitative Risk Assessment for Property (Based on AGS 2007)....................................................... 7
Table 3: Retaining structure design parameters. ............................................................................................ 10
Table 4: Pile design values. ............................................................................................................................. 11




J001783-001-R-Rev1                                                       i