MCU16.0099.01, RAL19.0036 & OPW 19.0282.01 - Response to Information Request (final) 10.03.2020 · MCU16/0099.01

Table 1: Borehole strata summary

    Location       Stratum                      Material                           Depth (m) bgl                 Consistency/Strength
                    Layer
                                                                                 From              To

      BH1          TOPSOIL                  Silty CLAY (CH)                         0             0.32                        Firm

                  ALLUVIUM               Sandy CLAY (CI - CH)                     0.32            1.20                Stiff to Very Stiff
                                                                                                 (REF)

      BH2          TOPSOIL                 Sandy CLAY (CL)                          0             0.40                     Very Stiff

                  ALLUVIUM               Silty Sandy CLAY (CI)                    0.40            0.70               Stiff - Soft to Firm

                                           Silty CLAY (CI-CH)                     0.70            0.90                   Soft to Firm

                                         Sandy CLAY (CI-CH)                       0.90            1.40                     Very Stiff

                                           Silty CLAY (CH-CI)                     1.40            2.75                       Hard

                                           Sandy CLAY (CH)                        2.75            2.90                       Hard

                                             Clayey SAND                          2.90          3.0 (TD)                        -

      BH3          TOPSOIL                 Silty CLAY (CI-CH)                       0             0.40                     Very Stiff

                  ALLUVIUM               Silty Sandy CLAY (CI)                    0.40            0.80                        Stiff

                                            Silty CLAY (CH)                       0.80            1.37                 Very Stiff - Stiff
                                                                                                 (REF)
Note: 1. TD = Target Depth 2. REF = Refusal 3. CL = Low plasticity CLAY; CI = Medium plasticity CLAY; CH = High plasticity
CLAY


4       Access construction trafficability
Aurecon understands that the following vehicles are required to access the site via the concrete
crossing:
◼    Standard 4WD vehicles (up to approx. 5 at any one time).
◼    Tipper Truck with trailer (carrying excavator)
        ◼   Tipper truck - approx. 8 tonnes
        ◼   Excavator - approx. 8 tonnes
◼    Concrete trucks (5 to 6) in and out of the site - standard size
◼    Truck for fencing contractor - approx. 4 tonnes
◼    3x semi-trucks to deliver pole/tower - size between 13m and 18m long trailers.
◼    A typical 100 tonne wheeled or tracked crane to lift the structure into place




                                                  Project 239146 File 247473 Cooroibah Waterway Crossing_Rev0.docx 2020-02-192020-02-19 Revision A Page 7