Slope Stability - lindsays

                  LINDSAY CONSULTING PTY LTD
Project   4 TRISTANIA DRIVE, MARCUS BEACH                  Project Number        220061
                                                                            Guy Meldrum
                                                           Client


                         LANDSLIDE FREQUENCY ANALYSIS
A         NATURAL SHALLOW LANDSLIDES

          FEATURE                                                           FACTOR

          SLOPE ANGLE                                                          0.500
          SLOPE SHAPE                                                          0.900
          SITE GEOLOGY                                                         1.000
          MATERIAL STRENGTH                                                    4.000
          CONCENTRATION OF SURFACE WATER                                       0.900
          EVIDENCE OF GROUNDWATER                                              0.700
          EVIDENCE OF INSTABILITY                                              0.500

          CALCULATED RELATIVE FREQUENCY                                        0.567 LOW
          APPROXIMATE ANNUAL SITE PROBABLITY FOR FEATURE                    2.27E-03

B         ROCKFALL

          FEATURE                                                           FACTOR

          SLOPE OF ROCK FACE                                                   0.000
          ORIENTATION OF DEFECT SYSTEM                                         0.000
          EVIDENCE OF INSTABILITY                                              0.000

          CALCULATED RELATIVE FREQUENCY                                        0.000 N/A
          APPROXIMATE ANNUAL SITE PROBABLITY FOR FEATURE                    0.00E+00

C         BOULDERS

          FEATURE                                                           FACTOR

          BOULDER SIZE                                                         0.000
          BOULDER SHAPE                                                        0.000
          SLOPE ANGLE                                                          0.000
          SLOPE SURFACE                                                        0.000
          EVIDENCE OF INSTABILITY                                              0.000

          CALCULATED RELATIVE FREQUENCY                                        0.000 N/A
          APPROXIMATE ANNUAL SITE PROBABLITY FOR FEATURE                    0.00E+00

D         FILL BATTERS

          FEATURE                                                           FACTOR

          FILL HEIGHT                                                          0.900
          SITE GEOLOGY                                                         1.000
          BATTER SLOPE ANGLE                                                   0.500
          NATURAL SURFACE SLOPE                                                0.200
          EVIDENCE OF INSTABILITY                                              0.500

          CALCULATED RELATIVE FREQUENCY                                        0.045 VERY LOW
          APPROXIMATE ANNUAL SITE PROBABLITY FOR FEATURE                    1.80E-04

E         CUT BATTERS

          FEATURE                                                           FACTOR

          CUT HEIGHT                                                           0.500
          SLOPE OF CUT FACE                                                    0.500
          MATERIAL IN CUTTING                                                  2.000
          NATURAL SURFACE SLOPE ABOVE CUT                                      0.200
          CUT SLOPE SUPPORT                                                    0.500
          DISTANCE OF TOE OF CUT TO STRUCTURE                                  2.000
          EVIDENCE OF INSTABILITY                                              0.500

          CALCULATED RELATIVE FREQUENCY                                        0.050 VERY LOW
          APPROXIMATE ANNUAL SITE PROBABLITY FOR FEATURE                    2.00E-04

          Basic Frequency Adopted for Site                                     0.004