Geotechnical Investigation

                                               PROPOSED CALILE HOTEL NOOSA DEVELOPMENT
                                               3 – 7 SERENITY CLOSE, NOOSA HEADS

TABLES
Table 1: Summary of Subsurface Profiles ........................................................................................................................... 6

Table 2: Stability Risk Levels .............................................................................................................................................. 8

Table 3: Details of Qualitative Risk Assessment for Property (AGS 2007) ....................................................................... 10

Table 4: Slope/W Analysis Results ................................................................................................................................... 11

Table 5: Retaining Structure Design Parameters .............................................................................................................. 18



TEXT FIGURES
Text Figure 1: Level four layout plan (upper) and some cross-sectional views (lower) of the development, courtesy
          of Richards + Spence ......................................................................................................................................... 2

Text Figure 2: 2022 aerial image of the site and immediate surrounds (courtesy Nearmap imagery)................................. 3

Text Figure 3: Panoramic view of the central part of the site looking north-east ................................................................. 4

Text Figure 4: Panoramic view over the north-eastern corner of the site, looking south towards the existing office ........... 4

Text Figure 5: Panoramic view of the western part of the site, looking north-east towards existing demountable
          building ............................................................................................................................................................... 4

Text Figure 6: Tectonic oblique drone image of the site looking south................................................................................ 5

Text Figure 7: Site plan showing ground surface contours (courtesy Noosa Council ‘Intramaps’) ...................................... 5

Text Figure 8: Extract of Laguna Bay Surface 1:100,000 Geology Map ............................................................................. 6

Text Figure 9: Erosion scours parallel to the gravel tracks in the south-eastern corner of the site...................................... 7

Text Figure 10: Extract from NSC landslide hazard overlay mapping ................................................................................. 8

Text Figure 11: Slope/W output for long term conditions – Case 1 ................................................................................... 11

Text Figure 12: Slope/W output for long term conditions – Case 2 ................................................................................... 12

Text Figure 13: Slope/W output for long term conditions – Case 3 ................................................................................... 12

Text Figure 14: Slope/W output for long term conditions – Case 4 ................................................................................... 13

Text Figure 15: Footing depth required to prevent undermining....................................................................................... 17



FIGURES
Figure 1: Site Plan



APPENDICES
APPENDIX A
Borehole & DCP Reports & Explanatory Notes

APPENDIX B
Geotechnical Laboratory Test Certificates

APPENDIX C
AGS Guidelines - Qualitative Terminology for Use in Assessing Risk to Property
Some Guidelines for Hillside Construction

APPENDIX D
Limitations




7 October 2022
Report No. 22239-001-Rev0                                                               iv