Negotiated - Compiled Reference Document - RAL25 0011 (As Published)

LINDSAY CONSULTING PTY LTD                                                                     -


STRUCTURAL AND CIVIL ENGINEERS
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AS TRUSTEE FOR THE LINDSAY FAMILY TRUST



             layer of soil over the underlying bedrocks.

             Based on the inspection carried out over the site Lindsay Consulting Pty Ltd is
             of the opinion that the existing allotment including the location for the proposed
             subdivision and residence is stable.

             A qualitive risk assessment of the geotechnical stability of the site has been
             carried out in accordance with the Australian Geotechnical Society guidelines.
             Refer Appendix E for a printout of the assessment.

             The summary qualitive table for the investigation is shown below.

                      Risk Hazard                   Likelihood   Consequence of     Risk to        Comments
                                                      of Risk         Risk         Property
                                                    occurring                       and Life
                                                                                   Assessed
                                                                                      As
  Subject             Shallow                   Unlikely         Minor            Very Low     A likelihood of
  Site                failure of                                                  to Low       Unlikely is
                      soils above                                                              assessed for
                      the footing                                                              potential instability
                      zone                                                                     of the soils above
                                                                                               the footing zone. A
                                                                                               consequence of
                                                                                               Minor has been
                                                                                               assigned if the
                                                                                               footings for
                                                                                               buildings on the
                                                                                               sloping parts of the
                                                                                               site are founded in
                                                                                               residual soil. The
                                                                                               resultant assessed
                                                                                               risk is Low in
                                                                                               accordance with
                                                                                               AGS 2007.
  Subject             Deep failure              Rare             Major            Very Low     The likelihood of a
  Site                through                                                                  deep failure through
                      residual soil                                                            the residual soil is
                                                                                               assessed as Rare
                                                                                               due to historically
                                                                                               low prevalence of
                                                                                               instability in this
                                                                                               geological formation
                                                                                               and the relatively
                                                                                               moderate ground
                                                                                               slopes. Although
                                                                                               the consequence of
                                                                                               such a failure would
                                                                                               be Major, the
                                                                                               resultant risk is
                                                                                               Low.
                      Instability of            Rare             Major            Very Low     The likelihood of
                      adjacent                                                                 instability on
  Adjacent
                      land caused                                                              adjacent lots
  Sites
                      by the                                                                   caused by the
                      proposed                                                                 development of the


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