Reference Document - MCU24/0143 (As Published)

                                                                                                                                                                                                                                                                                                                                                                                                                                                Test Pit No.

                                                                                                                                                                                                                                                                                                                                                                                                                                                    TP1
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                                                                                                                                                                                                                  Engineering Log - Test Pit                                                                                                                                    Project No.:                     24378

                                                                                                                                                                                                                       Client:                                      RG Strategic                                                                                                Commenced:                       21/1/2025
                                                                                                                                                                                                                       Project Name:                                Retrospective Slope Stability Assessment                                                                    Completed:                       21/1/2025
                                                                                                                                                                                                                       Hole Location:                               637 Black Mountain Road, Black Mountain                                                                     Logged By:                       MCC
                                                                                                                                                                                                                       Hole Position:                               483301.0 m E 7077321.0 m N MGA2020 Zone 56                                                                  Checked By:                      ACD
                                                                                                                                                                                                                       Equipment Type and Model:                                       5.5t                                                                                     RL Surface:                 No survey
                                                                                                                                                                                                                       Excavation Dimensions:                                                                                                                                   Datum:                      AHD       Operator:            Bebrok

                                                                                                                                                                                                                                         Excavation Information                                                                                                Material Description and Observations




                                                                                                                                                                                                                                                                                                                                                                                         Relative Density
                                                                                                                                                                                                                                                                                                                Classification
                                                                                                                                                                                                                                                                                                                                                                                                                              Shear
                                                                                                                                                                                                                           Penetration




                                                                                                                                                                                                                                                                                                                                                                                                              Pocket




                                                                                                                                                                                                                                                                                                                                                                                         Consistency
                                                                                                                                                                                                                                                                                                  Graphic Log


                                                                                                                                                                                                                                                               Samples                                                                            Material Description                                                                          Structure and
                                                                                                                                                                                                                                                                                                                                                                                                            Penetrometer      Vane




                                                                                                                                                                                                                                                                                                                                                                                         Condition
                                                                                                                                                                                                                                                                          Recovery




                                                                                                                                                                                                                                                                Tests                                                               soil type: plasticity or particle characteristics,                                                            Additional




                                                                                                                                                                                                                                                                                                                                                                                         Moisture
                                                                                                                                                                                                                                                                                                                                                                                                               UCS             Test
                                                                                                                                                                                                                                                                                                                Symbol
                                                                                                                                                                                                                  Method




                                                                                                                                                                                                                                                                                                                                     secondary and minor components, colour                                                                     Observations
                                                                                                                                                                                                                                          Water




                                                                                                                                                                                                                                                               Remarks               RL Depth                                                                                                                  (kPa)          (kPa)
                                                                                                                                                                                                                                                                                     (m) (m)




                                                                                                                                                                                                                                                                                                                                                                                                             100
                                                                                                                                                                                                                                                                                                                                                                                                             200
                                                                                                                                                                                                                                                                                                                                                                                                             300
                                                                                                                                                                                                                                                                                                                                                                                                             400
                                                                                                                                                                                                                                                                                                                                                                                                             500
                                                                                                                                                                                                                                                                                                                                                                                                                            50 100150200
                                                                                                                                                                                                                                                                                                                                   Silty CLAY (TOPSOIL), high plasticity, grey,                     F                                      0.01: TOPSOIL
                                                                                                                                                                                                                                                                                                                                   with rootlets                                                                                           0.15: COLLUVIUM
                                                                                                                                                                                                                                                            DS_0.2-0.6m                                           CH
                                                                                                                                                                                                                                                                                                                                   Silty CLAY, high plasticity, pale brown, red                                                            0.30: SIDEWALLS CAVING
                                                                                                                                                                                                                                                                                                                                   brown, trace fine to coarse sized gravel                                                                TO 2m BGL
                                                                                                                                                                                                                                                                                                                                                                                                               200

                                                                                                                                                                                                                                                                                                                                                                                                                250
                                                                                                                                                                                                                                                                                                                                                                                                               220

                                                                                                                                                                                                                                                            DS_0.8-1.2m                                           CH               Gravelly Silty CLAY, high plasticity, red brown,
                                                                                                                                                                                                                                                                                              1                                    pale brown, fine to coarse sized gravel, with
                                                                                                                                                                                                                                          Not Encountered




                                                                                                                                                                                                                                                                                                                                   phyllite cobbles


                                                                                                                                                                                                                                                                                                                                                                                          w=
                                                                                                                                                                                                                  EX




                                                                                                                                                                                                                                                                                                                                                                                          PL VSt




                                                                                                                                                                                                                                                                                              2                                                                                                                                            2.00: ROCK
       TECTONIC 3.00.2 LIB.GLB Log 1 TECTONIC BOREHOLE 24378.GPJ <<DrawingFile>> 4/2/2025 10:19 10.02.00.04 Datgel Lab and In Situ Tool - DGD | Lib: Tectonic 3.00.2 2021-03-30 Prj: Tectonic 3.00.2 2021-03-30




                                                                                                                                                                                                                                                                                                                                   PHYLLITE, distinctly weathered, fine grained,
                                                                                                                                                                                                                                                                                                                                   pale grey, grey, very low to medium strength,
                                                                                                                                                                                                                                                                                                                                   heavily fractured to form blocks <300mm,
                                                                                                                                                                                                                                                                                                                                   relict bedding dipping with ground slope




                                                                                                                                                                                                                                                                                                                                   Hole Terminated at 2.80 m
                                                                                                                                                                                                                                                                                              3                                    Target depth




                                                                                                                                                                                                                                                                                              4




                                                                                                                                                                                                                                                                                              5




                                                                                                                                                                                                                            Method                                            Penetration                                         Water                    Samples and Tests                        Moisture Condition            Consistency/Relative Density
                                                                                                                                                                                                                       N - Natural Exposure                                           VE - Very Easy                             Level (Date)       U## - Undisturbed Sample (## mm)                    D - Dry                       VS - Very Soft
                                                                                                                                                                                                                       X - Existing Excavation                                        E - Easy                                                      DS - Disturbed Sample                               M - Moist                     S - Soft
                                                                                                                                                                                                                       BH - Backhoe Bucket                                                                                       Inflow             BDS- Bulk Disturbed Sample                          W - Wet                       F - Firm
                                                                                                                                                                                                                       R - Ripper                                                     F - Firm                                                                                                                                        VSt - Very Stiff
                                                                                                                                                                                                                       EX - Excavator                                                 H - Hard                                                                                                                                        H - Hard
                                                                                                                                                                                                                       RH - Rock Hammer                                               VH - Very hard                                                                                                                                  VL - Very Loose
                                                                                                                                                                                                                                                                                                                                                                                                            Plastic Limit
                                                                                                                                                                                                                                                                                                                                                                                                                                      L   - Loose
                                                                                                                                                                                                                                                                                                                                                           Classification Symbols                              < PL                   MD - Medium Dense
                                                                                                                                                                                                                                                                                                                                                           and Soil Descriptions                               = PL                   D - Dense
                                                                                                                                                                                                                                                                                                                                                            Based on Unified Soil                              < PL                   VD - Very Dense
                                                                                                                                                                                                                                                                                                                                                            Classification System                                                     Fr - Friable



Document Set ID: 24125427
                  24010296
Version: 1, Version Date: 17/09/2025
                          07/08/2025