RFI -Attachment 6 - Geotechnical Investigation Report CORE.pdf

Walsh Consulting Engineers




Table 6: Qualitative risk assessment for property (based on AGS 2007)
                                                          Assessed
          Hazard             Likelihood   Consequence                                     Comments
                                                            Risk
                                                                        The likelihood of shallow failure is assessed
  Shallow failure through
                                                                        as Unlikely. The consequence is considered
   loose fill and natural
                              Unlikely      Medium          Low         Medium, if the proposed development is
  aeolian soils above the
                                                                        founded as per the recommendations in this
     foundation depth
                                                                        report. The resultant risk is Low.
                                                                        The likelihood of a deep failure through the
  Deep failure through the                                              natural aeolian soil is assessed as Rare due
    dense (or denser)                                                   to historically low prevalence of instability in
   natural aeolian soils       Rare          Major          Low         this geological formation and no signs of
   below the foundation                                                 slope instability on site. Although the
           depth                                                        consequence of such a failure would be
                                                                        Major, the resultant risk is Low.

Based on the available information and the results of our investigation, it is our opinion that there is a Low
Risk of slope instability for the proposed development, subject to implementation of the recommendations in
this report, assessed in accordance with the AGS guidelines (March 2007).

8.0      SUMMARY AND CONCLUSIONS
From a geotechnical viewpoint, our assessment is that the site is suitable for the proposed development, and
that there is a Low Risk of slope instability subject to implementation of the recommendations in this report.

9.0      LIMITATIONS
Your attention is drawn to the document, Limitations which is attached in Appendix C.




J001390-001-R-Rev0                                   11