Geotechnical Investigation Report · OPW26/0149

                                                                                                                                                                                                                                    Protest CMT
                                                                                                                                                                                                                              ABN: 26602913673
                                                                                                                                                                                                                     www.protestcmt.com.au




                                                                                                                             Protest CMT




                                                                                     California Bearing Ratio Report
Client :                                         Internal Project                                                                                                        Report Number :                        SR/PTG/04982 - 1/1

Client Address :                                 Internal Project                                                                                                        Report Date :                                10/08/2026

Project Name :                                   87 Hayward Drive Lake MacDonald                                                                                         Test Request :                                       -

Project Number :                                 PTG/04982
                                                                                                                                                                                                        Page 1 of 1
Location :                                       Not Provided


Test Methods :                                   AS1289.6.1.1, AS1289.5.1.1, AS1289.2.1.1



Material Description :                           Clay


Sample Number :                                  S/371555                                                                                                                Sampling Location :       Client Selected

Date(s) Tested :                                 29/07/2026 - 10/08/2026                                                                                                 Sampling Method :         As Received

Material Source :                                Insitu                                                                                                                  Time :                    00:00

For Use As :                                     Proposed subgrade                                                                                                       Location 1 :              BH03

Lot Number :                                     -                                                                                                                       Location 2 :              0.5 - 1.5 m

                                                                                                                                                                         Location 3 :              -
Specification (CBR Value) :                      -
                                                                                                                                                                         Location 4 :              -


               MDD (t/m³) : 1.55                     Nominated % of MDD : 100.0%                                                              Target Dry Density (t/m³) : 1.55                             Achieved % of MDD : 100.0%

                   OMC (%) : 25.9                    Nominated % of OMC : 100.0%                                                           Target Moisture Content (%) : 25.9                              Achieved % of OMC : 100.5%

Compactive Effort :                                                Standard
Dry Density Before Soak (t/m³) :                                      1.54
                                                                                                                                                                 CBR 1 Point Graph
                                                                                                                  4000
Dry Density After Soak (t/m³) :                                       1.54
Field Moisture Content (%) :                                         26.0%
                                                                                                                  3500
Compaction Moisture Content (%) :                                    26.0%
After Penetration - Top Moisture (%) :                               27.1%                                        3000
After Penetration - Total Moisture (%) :                             26.7%
Period of Soaking (Days) :                                              4                                         2500

Mass of Surcharge (kg) :                                               4.5
                                                                                                       Load (N)




Oversize (%) :                                                        0.0%                                        2000

Oversize Included :                                                Excluded
                                                                                                                  1500
Method of Determining Plasticity :                      Tactile/Visual Assessment
CBR Sample Curing Time :                                           71 Hours
                                                                                                                  1000
-                                                                        -
-                                                                        -
                                                                                                                   500

Swell (%) :                                                          0.0%
                                                                                                                     0
                                                                                                                         0                      2.5              5                7.5              10                  12.5             15
CBR Value at 5mm :                                                   4.5%                                                                                                Penetration (mm)


Pre-treatment (CAn) :                                                   -
Pre-treatment (Wn) :                                                    -
Mass Retained (R) :                                                     -

                                                 -
Remarks :


                                                                                                                                                                                        APPROVED SIGNATORY
                             Note: The results contained in this report relate only to the item/s that were tested/sampled

                             Accredited for Compliance with ISO/ IEC 17025 - Testing
                             Protest CMT (Sunshine Coast) Accreditation Number - 19667
                             Base Laboratory Site Number - 24490 - Sunshine Coast

                             Base Laboratory Address - Unit 2/9-13 Matheson Street, Baringa, 4551, QLD                                                                                  David Kent - Signatory

Document Number :            RF03                                                                                                                                                                           Date :     12/01/2026