Appendix G - Slope Stability Certification Report · MCU25/0022

  9     SLOPE RISK ASSESSMENT
  “Risk is defined in the Australian Geomechanics Society publications as a measure of the
  probability and severity of an adverse effect to health, property or environment. Risk is often
  estimated by the product of numerical probability and consequences; however, a more general
  interpretation involves a comparison of the probability and consequences in a non‐product
  form. To carry out a full risk assessment of the site would require a full understanding of the
  type of structure proposed and the associated earthworks along with the likely consequences
  should failure occur.
  The site was assessed in terms of “Landslip Risk Management Concepts and Guidelines”
  published by The Australian Geomechanics Society.

                                      RISK LEVEL IMPLICATIONS

         RISK LEVEL                                       EXAMPLE IMPLICATIONS
      VH  VERY HIGH RISK                  Extensive detailed investigation and research, planning and
                                          implementation of treatment options essential to reduce risk
                                          to acceptable levels; may be too expensive and not practical
       H          HIGH RISK                 Detailed investigation, planning and implementation of
                                         treatment options required to reduce risk to acceptable levels

       M      MODERATE RISK            Tolerable, provided treatment plan is implemented to maintain or
                                                  reduce risks. May be accepted. May require
                                               investigation and planning of treatment options.
       L           LOW RISK              Usually accepted. Treatment requirements and responsibility
                                                   to be defined to maintain or reduce risk.
      VL       VERY LOW RISK                 Acceptable. Manage by normal slope maintenance
                                                                  procedures.


  It is our opinion, based on Appendix C of Australian Geomechanics Society, “Practice Note
  Guidelines for Landslide Risk Management 2007”, that if development is managed in
  accordance with the recommendations in this report and the geotechnical development
  constraints presented are strictly followed, the site can be developed with a MODERATE
  RISK of damage to persons or property prior to construction of the retaining wall and a LOW
  RISK of damage to persons property once the retaining wall has been constructed.




193 Sankeys Rd Slope Stability Certification
                                                                                             July 2023
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