Reference Document - MCU24/0023

GJ Gardner Homes Gympie                                                                                                         23236-001-Rev0
C/- Covey Associates Pty Ltd                                                                                                      7 August 2023




Text Figure 11: Areas at increased risk of slope instability

3.2     Stability Assessment
The risk assessment for this project has been carried out following AGS 2007 Practice Note Guidelines for
Landslide Risk Management. Relative levels of risk and their implications are given in Table 1 below, and
the Qualitative Terminology for Use in Assessing Risk to Property is attached.
 Table 1: Stability Risk Levels

 Risk Level                 Example Implications(1)

                            Unacceptable without treatment. Extensive detailed investigation and research, planning and
         Very High
 VH                         implementation of treatment options essential to reduce risk to Low; may be too expensive and not practical.
         Risk
                            Work likely to cost more than value of property.

                            Unacceptable without treatment. Detailed investigation, planning and implementation of treatment options
 H       High Risk          required to reduce risk to Low. Work would cost a substantial sum in relation to the value of the property.

                       May be tolerated in certain circumstances (subject to regulators’ approval) but requires investigation, planning
 M       Moderate Risk and implementation of treatment options to reduce risk to Low. Treatment options to reduce to Low risk should
                       be implemented as soon as practicable.

                            Usually acceptable to regulators. Where treatment has been required to reduce the risk to this level,
 L       Low Risk
                            ongoing maintenance required.

 VL      Very Low Risk Acceptable. Manage by normal slope maintenance procedures.

 Note: (1) The implications for a particular situation are to be determined by all parties to the risk assessment and may depend on the nature of the
 property at risk; these are only given as a general guide.




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